Cutting tool

FIELD: process engineering.

SUBSTANCE: invention relates to cutting tools and may be used for cutting whatever materials. Proposed cutting tool comprises top and bottom parts that may be parted by separating appliances. At least, one of top and bottom parts comprises cutting device while top and bottom parts are retained together by magnets made up of first and second magnetic appliances arranged on top and bottom parts. Metal strip is arranged atop the cutting tool to joint first and second magnetic appliances to, at least, top or bottom part. Invention covers also the method of cutting with the help of above described tool.

EFFECT: improved control over cutting tool, better quality of cutting.

24 cl, 25 dwg

 

The technical field to which the invention relates.

The present invention relates to cutting tools. In particular, the present invention relates to cutting tools are made with the possibility of the operation of cutting a variety of materials, such as drywall.

The level of technology

Drywall contains a core of aerated gypsum plaster, located between two sheets of heavy paper or cardboard. In the UK, where the houses are almost always built of brick and mortar, plasterboard is primarily used for lining the interior walls or ceilings for construction of the walls. In the United States, where the drywall, which is commonly known as dry plaster or gypsum-cardboard, often used for the construction of entire buildings, because the exterior walls are usually made from wood.

For cutting drywall usually use a knife, such as a Stanley knife (trademark)by cutting at a pre-scheduled pencil lines. However, this technique is insufficient due to the necessity of applying a two-step cutting process. In the first step of the cutting knife marks and cuts through a layer of material paper type on the first side of the drywall. The application of pressure along the slit allows the t to open the drywall. But then you must perform the second step of cutting in order to penetrate the layer of material type paper on the back side of the drywall, which remains intact even after opening the drywall. A second step of cutting may be inconvenient and require unnecessary effort because there is a need to try to penetrate the layer of material paper type on the reverse side from the bottom of the drywall. This two-stage cutting process is also the process of insufficient purity and leads to the formation of unwanted dust and debris. You can also receive an unsatisfactory cut, since it is difficult to perform the second step of cutting exactly on the line along which the cut is made during a first step of cutting. For direct cut or smooth edge can take the final step of alignment or the use of sandpaper.

An alternative technique of cutting may require the use of the jigsaw, saw for drywall or saws General purpose. However, this technique is difficult to cut a sheet of material such as drywall. Such equipment, which completely cuts through drywall, also leads to the formation of significant amounts of dust and debris. Application for cutting drywall electrical equipment such ka is the jigsaw, also requires a power source that is not always possible to provide.

You can also use the cutting tool described in U.S. patent No. 5659961 included here as a reference. However, the cutting tool described in U.S. patent No. 5659961, has several disadvantages. For example, this cutting tool is difficult to manage, which increases the difficulty of getting a clean straight cut. It is also hard to get the carved part of the complex form due to the lack of control the cutting tool described in U.S. patent No. 5659961.

The task of the at least one aspect of the present invention is to eliminate or mitigate at least one or more of the problems mentioned above.

Another objective of at least one aspect of the present invention is to provide an improved cutting tool designed for performing cutting operations.

Disclosure of inventions

According to the first aspect of the present invention proposed a cutting tool configured to perform operations of cutting or incision, comprising upper and lower parts made with the possibility of breeding dividing means, and at least one of the upper and the lower part contains the cutter, while the upper and lower parts of the keep which are stated together by magnetic attraction, the provided magnetic means containing first and second magnetic means located in the upper and lower parts, and the metal strip is located at the top and connects the first and second magnetic means in at least one of the upper and lower parts.

Typically, the magnetic attraction can be created at least the first magnetic means located essentially to the maximum extent possible to improve the management of the cutting tool. The magnetic means can interact with the metal and/or magnetic means in other parts of the cutting tool.

Convenient may be the presence of the second magnetic means. At least first and second magnetic means can be located in the upper and/or lower parts to the maximum extent possible to improve the management of the cutting tool. It was found that the best way to form a branch of the order of 5-20 cm between at least first and second magnetic means for increasing the magnetic moment between the magnetic means.

In the upper and/or lower parts of the possible presence of multiple magnetic means. For example, you can have any suitable number of magnetic means, such as first and second magnetic means both the upper and lower parts.

In a preferred embodiment, the wasp is estline at least the first magnetic means may be positioned at any place, both in front and in the back half of one of the upper and lower parts. Preferably, the second magnetic means can be located anywhere, both in front and in the back half of one of the upper and lower parts. The first and second magnetic means can be formed of a single magnetic product, which gives the form of the first and second magnetic means, or they may be formed of two separate magnetic products. Convenient may be the placement of the first magnetic means in the front half, preferably on the front end of one of the upper and lower parts, and the second magnetic means may be located in the rear half, preferably at the rear end, one of the top and bottom.

It was found that the installation of at least first and second magnetic means being in the front and back half of at least one of the upper and lower parts, respectively, provides improved control of the cutting tool. Therefore, by setting at least the first and second magnetic means along at least one of the upper and lower parts is improved management of the cutting tool, allowing, for example, to get straight lines cut or round cut.

In specific embodiments, the implementation of the first and second magni is ing means may be located essentially in the front and the rear half of the upper and lower parts of the cutting tool. Preferably the first and second magnetic means and the upper and lower parts can be mounted essentially on the front and rear ends of the cutting tool, or can be, essentially, in the middle of both the front and rear halves of the upper and lower parts. On the other hand, the magnetic means may be located essentially adjacent to the cutting device. The first and second magnetic means and the upper and lower parts can be essentially aligned with each other.

Alternatively, the magnetic means may be located essentially adjacent to the cutting device. The magnetic means may, therefore, be essentially before cutting devices and/or behind them, or can be located on any one of both sides of the cutting devices. In the variants of implementation with magnetic means located on both sides of the cutting devices may be generally four magnet. The magnetic means may preferably be formed essentially symmetrical layout with the placement intervals around cutting devices, which can help control the cutting tool during its use.

Typically, the cutting device may be located in both the upper and lower parts, and the magnetic means can possess the change essentially in front of the two cutting devices and/or behind them, essentially before cutting surfaces of the cutting device and/or behind them. Between the magnetic means and the cutting surfaces may be a period of about 0.5 to 10 cm, usually equal to approximately 1-5 see Preferably the magnetic means and the cutting device and the upper and lower parts can be essentially aligned with each other.

Typically, the first and second magnetic means can be separated by a gap of the order of 1-20 see the Cutting device may be located essentially between the first and second magnetic means and may be located at the same distance from the first and second magnetic means. On the other hand, magnetic means located behind the device may be located somewhat closer to the cutting device. The first and second magnetic means can essentially fit or be in the range from 1 to 10 cm from the front and back of the cutter.

Convenient is the location of the magnetic means in the upper part essentially above the magnetic means in the lower part. This facilitates control of the cutting tool and prevents the loss of the lower part during use.

In alternative embodiments, the implementation of the at least first and second magnetic means can be located essentially on either side of the cutting device, which can b the th for example, set to the centre. In this embodiment, the magnetic means is crossed by both sides in the direction parallel shaped cross-section, and are not in front of or behind the cutting edges of the cutting devices. Perhaps the presence of the first and second magnetic means being on both sides of the cutting devices on both upper and lower. For these embodiments discovered the ease of use and maximizing the distance between at least first and second magnetic means in order practically to maximize the magnetic moment and to improve the management and performance of cutting tools.

Usually you can use any type of magnetic media, such as permanent magnets, electromagnets or a magnetic metal, such as magnetized steel.

Alternatively, in some embodiments, the implementation of the magnetic means may be located on one or the top or the bottom, and a magnetic metal, such as magnetized steel, is placed on the other side.

In preferred embodiments implement to reduce the weight of the lower part on the lower part can be placed magnetic means smaller. This helps to move the lower part of a material such as drywall. Predpochtitel is about the size of the magnetic portion in the lower part can be about two thirds the size of the magnetic means on the top.

It is a more powerful magnetic means in the rear part of the cutting tool, which gives the upper and lower parts of essentially V-shaped configuration. This may facilitate cutting and to prevent wobbling and vibration of the upper and lower parts relative to each other.

Was also convenient to use the shielding effect, such as mutually connecting metal strip located at the top and connecting the magnetic means in at least one of the upper and lower parts. This has several advantages, such as creating a dazzling effect and avoid attracting unwanted metal objects to cutting tools. In addition, the metal strip may improve performance magnetic media by creating a closed magnetic circuit. For example, a rod of low carbon steel with a thickness of about 5 mm can be used to connect the top of the magnetic media on both upper and lower parts.

The force of magnetic attraction between the upper and lower parts can be adapted for different cutting operations. Suitable may be the magnetic field strength from about 0.1 to 20 Tesla, from about 0.2 to 10 Tesla, from about 1 to 5 Tesla or about 0.5 Tesla. For example, when cutting Gipson is rtone required magnetic attraction may preferably be sufficient to to cut or incise layer of material paper type on either side of the drywall. It was found that for cutting drywall can be a sufficient magnetic field strength of 0.5 Tesla. For more depth of cut or to perform cutting operations on a more solid material may require a large magnetic field. You can get a cutting depth from about 0.1 mm to 20 mm, from about 0.1 mm to 10 mm, from about 0.1 mm to 0.5 mm or about 1 to 2 mm, So the layers of material paper type in the drywall, which can have a thickness of about 0.3 mm, can be cut or cut using the cutting tool according to the present invention.

The cutting tool according to the present invention can be used in a variety of cutting operations and for cutting a variety of materials or structural building slabs, containing a reinforcing layer. The cutter cuts through or perform a cut on a reinforcing layer for the formation of the weakened area. For example, you can cut the drywall, glass, wood, laminated wood, cardboard, Lucic (trademark), tile, plastic, fiberglass mats in reinforced glass gypsum boards, fiberglass mats in cement slabs and the like.

Preferably cutting the e device may be a freely rotating circular cutter, such as rotary disc cutting plate. The cutter can be rotated manually when its advancement on the exposed cutting material, or the cutter may have a mechanical drive using the battery or source of electricity. The diameter of the cutting plate can be chosen depending on exposed cutting material and require cutting depth and can range from about 0.5 cm to 5 cm, and preferably about 1-2 cm In preferred embodiments, the implementation may have rotating cutting blades on both upper and lower parts, which can be installed on the merits of one over the other or at least one line relative to each other. The cuts formed by the upper and lower parts can therefore be essentially collinear. This may facilitate the separation cut or incised material.

The saw device may be any suitable cutting tool, including any type of rotating or stationary blade or cutting tool based on the use of laser or heating or burning.

The use of a rotating cutting blades has a highly important technical advantage of the extended service life of the cutting device in comparison with a single knife. It was found that the use of a rotating cutting square is tiny allows you to penetrate 300 or even 500 meters without significant deterioration in quality of the cut. When using a simple knife cutting end may be quickly worn with deterioration in the quality of the cut after passing through a relatively short distance, such as 20 meters, it Was found that rotating circular cutting plate can have a lifespan of at least 20 times the life of ordinary knife. It was also found that rotating circular cutting plate facilitates the cutting process by improving movement of the cutting tool according to the material being cut because of reduced friction. However, in some cases, you may use a simple knife.

Convenient is the use of a rotating circular cutting devices located in the cartridge, allowing, if necessary, easy to replace cutting inserts. To facilitate the separation and replacement of the cartridge can be provided by a button release. Alternatively, if necessary, the cartridge can simply be pulled out of the cutter. The use of cutting devices in the cartridge also provides the ability to install a variety of cutting height through the use of different cartridges with different cutting height. This arrangement enables to eliminate the need for the worker to adjust the depth of the cut, which he generates, by using the device regulating the heights of the cutting, located in the cutting tool. The cutting tool may thus be a multi-purpose tool suitable for performing a variety of cutting operations. However, in some embodiments, the implementation of the height and depth of cut of the cutting device can be modified and varied by the user in accordance with various requirements of the cutting.

Preferably the cutting operation forms an incision or cut a certain depth to cut the material. Preferably the incision or the incision may be formed on both sides of a material such as drywall. Formed slits or incisions on both sides can be essentially collinear with each other. Preferably the incision or the incision may be deep enough for through penetration or at least weakening of the layers of material paper type on both sides of the drywall, so the remaining thin fastening part can be broken with minimal force applied by the user. In some situations, the incisions can completely penetrate the material. Since most of the strength of the drywall is provided by layers of material such as paper, after cutting or incision of these layers of drywall can be easily divided along the line of the generated cuts. It was found that we can expect is whether clean, straight cuts. In addition, you can also easily get a curved line, such as a round cut-outs.

So there is no need for incisions or incisions on either side of the material can pass through the material or a reinforcing layer in a complex construction plates. All that is required is the creation of a weakened area, such as an incision, which forms the fault line along which the user can easily perform the separation along the line of the cut or incision.

In some embodiments, the implementation of the lower side of the upper and lower parts may include rotating elements, such as roller or ball bearings, designed to facilitate the movement of the upper and lower parts on the material being cut. However, a special advantage of using a rotating cutting blades is that in some situations there is no need to provide a rotating elements, such as rollers, and the upper and lower parts can simply slide on the material being cut. In these variants of implementation it is desirable to form the lower side and the upper and lower parts of a material with low frictional resistance. For example, suitable smooth plastic or solid smooth metals, such as aluminum.

Typically, the separation means can be any suitable for the coming of the tool, such as retractable separation means, which may contain two separating lever, located at the creature in front of and behind the cutting tool. On the other hand, there may be any suitable number of release agents. Separation means may be retractable or telescopic. Preferably, the separation means can be attached to the top. Separation means may move in a substantially perpendicular direction relative to the lower side of the upper and lower portions using any suitable means, such as spring-loaded device. Convenient may be the possibility of forced movement of the separating means in a position essentially flat against the lower side of the upper part during cutting operations. Preferably the lower side of the upper part may contain notches to accommodate the separating agent, which allows a flat surface with low resistance to come into contact with the cut material. Separation means may have the function of preventing the coming together of the upper and lower parts under the influence of the existing magnetic forces.

It is possible to develop a number of different cutting tools that have a separating agent of different lengths. Preferably the length of the RA the separating means may be somewhat larger than the width of the material, you want to cut. For example, for cutting plasterboard 12.5 mm retractable separation means may have a length of about 15 mm

The length of the separating means can also be controlled using, for example, telescopic means or threaded Adjuster that allows the user to adjust the length of the separating means with different thickness of material to be cut. The gap between the upper and lower parts can therefore be adjusted and changed to suit different conditions.

The cutting tool may also include means for attaching a measuring device, such as a measuring tape. For example, the cutter may contain slots for the measuring tape that can be used to attach to it a standard measuring tape, thus allowing the user to cut or mark the specified length. The slots for the measuring tape can be located in the front and/or rear of the device and/or on the sides of the cutter.

The cutter may also contain auxiliary means for cutting in the form of a set of curvilinear guiding lines on the upper surface of the upper part of the cutting device, which allow the user to penetrate rivoliana line.

The cutter may also contain essentially transparent area in the upper part of the cutting device, which allows the user to see the form section. This helps the user to follow the line laid down on the material to be cut.

Usually the upper part has the desired shape and adapted to make it easier to capture and application of effort by the user.

Convenient is the forming of the upper and lower parts of any suitable plastic. It is desirable that the plastic was durable and resistant to breakage. For example, suitable are polystyrene or polymers based resins.

Moreover, the front part of the upper and lower parts may be shaped and configured to accommodate the material to be cut. For example, the front part of the upper and lower parts may include rounded edges to facilitate entry of material which must be cut with a cutting tool.

According to the second aspect of the present invention proposes a method of operations of cutting using a cutting tool according to the first aspect, in which the cutting tool to promote the material to be cut, and the cutting tool to perform at least one incision or an incision on the surface of the material.

Usually during the operation re the project for a separation means, such as retractable separation means, move from a position essentially perpendicular to the bottom side of the upper part of the cutting tool in the second position, essentially parallel to the bottom side of the upper part, and then return to the first position after the cutting.

Preferably rotating the cutting plate can be used for both the upper and the lower parts of the cutting tool.

According to a third aspect of the present invention cutting tool according to the first aspect apply to the operations of cutting.

Brief description of drawings

Next will be described embodiments of the present invention solely as examples with reference to the accompanying drawings, on which:

Figure 1 is a perspective view of the cutting tool according to the first variant implementation of the present invention;

Figure 2 is a view of the underside of the upper part of the cutting tool shown in figure 1;

Figure 3 is an additional view of the bottom side of the upper part of the cutting tool shown in figure 2, with the removed circular cutting plate;

Figure 4 is a perspective view of the roller on the axis used in the cutting tool shown in figure 1-3;

Figure 5 is a view in which respective cover, used in the cutting tool shown in figure 1-3;

6 is a view of the bottom side of the lower part of the cutting tool shown in figure 1;

Fig.7 is a view of the lower part of the cutting tool shown in Fig.6, is removed from a rotating circular cutting plate and rollers;

Fig is a view of the upper part of the cutting tool shown in figure 1, when the casing is removed to show the location of the magnet;

Fig.9 is an additional view of the upper part of the cutting tool shown in Fig, which removed the magnets separating levers, rotating circular cutting plate and rollers;

Figure 10 is a view of the lower part of the cutting tool shown in figure 1, when the casing is removed to show the location of the magnet;

11 is an additional view of the upper part of the cutting tool, shown in figure 10, which removed the magnets separating levers, rotating circular cutting plate and rollers;

Fig is a perspective view of the cutting tool according to the second variant of realization of the present invention, which does not contain rollers;

Fig is a view of the underside of the upper part of the cutting tool shown in Fig;

Fig is the Wallpaper view of the lower side of the lower part of the cutting tool, shown in Fig, and

Figa-15th is a cutting tool, shown in figure 1-11, in the process;

Fig is a side view of the cutting tool according to the third variant of implementation of the present invention;

Fig is a view in transverse section of the cutting tool shown in Fig;

Fig is a view from the spatially separated parts of the upper part of the cutting tool shown in Fig and 17;

Fig is a view in transverse section of the upper part of the cutting tool shown in Fig;

Fig is a view of the separating lever used in the cutting tool shown in Fig-19;

Fig is a type of cartridge that contains all the inserts used in the cutting tool shown in Fig-20;

Fig is a view from the spatially separated parts of the lower part of the cutting tool shown in Fig-21; and

Fig is a view in transverse section of the lower part of the cutting tool shown in Fig.

Detailed description of the invention

With reference to figure 1 is a view of the cutting tool according to the present invention, indicated in General position 100. The cutting tool 100 contains two parts VI the corps, namely, the upper portion 102 and lower portion 104.

The upper part 102 of the cutting tool includes a section 102A of the main body and the outer casing 102b. Similarly, the lower portion 104 of the cutting tool 100 includes a section a the main body and the outer casing 104b.

Although it is not shown in figure 1, the upper part 102 of the cutting tool 100 may have a shape compatible with the shape of the hands, which facilitates the application of pressure and, consequently, the use of the cutting tool 100.

The upper and lower portions 102, 104 are cast from plastic using any suitable method known in the art.

Figure 2 shows the bottom side 106 of the upper part 102 of the cutting tool 100. On the bottom side 106 has two breakaway lever 108, 110. Breakaway levers 108, 110 are mounted on axes 112, 114, respectively, and are shifted by a spring (not shown) in the position shown in figure 2. Breakaway levers 108, 110 can be rotated in such a way that they are arranged parallel to the bottom side 106. Deepening 109, 111 on the bottom side 106 can accommodate breakaway levers 108, 110, thus allowing obtaining on the bottom side 106 in the process of cutting a flat surface with a low coefficient of friction.

On the bottom side 106 of the upper part 102 has also established essentially in the center of all the I cutting plate 116. Round cutting plate 116 can rotate freely and established itself in the cartridge 118, which can be removed and replaced with a new cartridge 118 containing the new round cutting plate 116. To adjust the height of cut of a round plate 116 may use different cartridges 118 to obtain different depths of cut.

Figure 2 shows also that the lower edge 106 of the upper part 102 of the cutting tool 100 includes four rollers 120, 122, 124, 126, located at each corner of the bottom side 106. Four rollers 120, 122, 124, 126 freely rotate and can facilitate the movement of the cutting tool 100 according to the material to be cut.

Figure 3 shows an additional view of the upper part 102 of the cutting tool 100, which is the cover 128 in the open position. The cover 128 open in order to allow to remove the cartridge 118, containing all the cutting plate 116. To continue the operation of cutting, you can insert a removable cartridge 118 and close the lid 128.

Figure 4 shows the enlarged view of the roller 120, as shown in figure 2 and 3. The roller 120 is mounted on a shaft 121 and is made of any suitable plastic.

Figure 5 shows the enlarged view of the cover 128. Cover 128 has a flat section 130 of the main body with an elongated slot 132 through which may be circular cutting plate 116. At one end of the cover 128 has the Xia hinge 134, around which can rotate the cover 128. On the other end of the cover 128 has essentially U-shaped latch 136, which contains a protruding edge 138 that can come with snap in the corresponding receiving element (not shown)made in the upper part 102 of the cutting tool 100. If necessary, the cover 128 can be opened by clicking on the section 140 of the latch 136 in the direction of the groove 132.

Figure 6 shows the bottom side 142 of the lower part 104 of the cutting tool 100. Similarly, the upper part 102 has four rollers 144, 146, 148, 150 and installed at the center of a circular cutting plate 152. Figure 6 also shows that the bottom side 142 also contains two essentially arcuate channel 154, 156. These channels 154, 156 are made interoperable with the lower parts of the breakaway levers 108, 110.

7 shows an additional view of the bottom side 142 of the lower part 104 of the cutting tool 100. Round cutting plate 152 and four rollers 144, 146, 148, 150 are not shown. Not shown in the outer casing 104b.

On Fig shows the upper part 102 of the cutting tool 100, which removed the outer casing 102b. On Fig shows the position of two separate magnets 158, 160 that are installed on the merits of the front and rear rotary cutting plate 116. The magnets 158, 160 essentially adjacent to the front and rear parts is rotating cutting plate 116. The magnets 158, 160 are thus in the front and back half of the cutting tool 100. The magnets 158, 160 are many suitable types and securely fastened in a holding elements 162, 164, respectively. Screws, although not shown, may be passed through holes 166, 168 for attaching section of the main body 102A to the outer cover 102b.

Figure 9 shows an additional view of the section of the main body 102A to remove the magnets 158, 160. Of the recesses 170, 172, 174, 176, respectively, removed the rollers 120, 122, 124, 126. The cartridge 188, which contains all the inserts 116, is also removed, thus forming an aperture 178. Spacer arms 108, 110, forming elongated grooves, also not shown.

Figure 10 shows the lower part 104 of the cutting tool 100, where the removed outer casing 104b. Figure 10 shows the position of two separate magnets 185, 187, installed by being near the front and rear parts of the rotating saw blade 152. Magnets 185, 187 are many suitable types and securely fastened in a holding elements 184, 186, respectively.

Figure 11 shows an additional view of the section of the main body a lower part 104. Magnets 185, 187 removed. The rollers 144, 146, 148, 150 have also been removed to show the notches under the rollers 188, 190, 192, 194. Also shown are two holes 196, 198, which can the be inserted the screws for fastening the sections of the main body a to the outer casing 104b.

The force of the magnets 158, 160, 185, 187 in the upper and lower portions 102, 104 can be adjusted to vary depending on various conditions. The magnetic field may be about 0.5 Tesla. Though there may be provided various kinds of magnetic properties, it is important that the magnetic field strength is high enough that the lower part 104 of the cutting tool 100 is quite firmly held to cut the material so that all the cutting plate 152 in the lower part 104 slots required thickness such as a thickness of a layer of material such as paper on the drywall. The magnetic field strength must be high enough to continuously hold the lower part 104 of the cutting tool 100 in contact with the cut material, and must be high enough to ensure the effective implementation of the cutting process. It was also found that increasing the intensity of the magnetic field, you can use the shielding effect. To obtain a shielding effect on two separate magnets 158, 160, 185, 187 in the upper and lower portions 102, 104 may be placed in a metal band. Metal strip can improve performance magnets, because it allows you to form a complete magnetic circuit. For example, you might use is the rod of low carbon steel with a thickness of about 5 mm

In alternative embodiments, the implementation in the lower part 104 can be used magnets smaller 185, 187, since it allows to reduce the weight of the lower part 104. For example, it is possible to use magnets in size, approximately two third of the size of the magnets in the upper part 102. In other embodiments, the implementation may use in the lower part 104 instead of magnets magnetized metal, such as magnetized steel. Due to the high cost of the magnets, this provides a significant economic advantage by reducing the cost of manufacture of the cutting tool 100. In other alternative embodiments, the higher the magnetic field strength can be generated in the rear part of the cutting tool 100, so that the upper and lower portions 102, 104 can be tilted relative to each other, taking essentially V-shaped configuration. This may make it easier to cut.

Standard thickness drywall, which can be cut, is about 12.5 mm, it Was found that when the thickness you want to create between the upper and lower portions 102, 104 magnetic field of 0.5 Tesla.

On Fig-14 presents the cutting tool 200, which is similar to the one shown in figure 1-11, but does not have rollers. Use numeric positions, starting with '2', which Rel is charged to the same elements, shown in figure 1-11.

On figa-15th shown the cutting tool 100 in use. On figa shows the cutting tool 100, is aligned with the sheet of plasterboard 10 to be cut. Gypsum Board contains the Central plaster part with two layers of material such as paper 12, 14 on each side. Layers 12, 14 of material such as paper has a thickness of about 0.3 mm

First and foremost, the cutting tool 100 to promote the gypsum Board 10 on which the first breakaway lever 108 is forced parallel to the bottom side 106 of the upper part 102.

Then the cutting tool 100 slides with rollers 120, 122, 144, 146 on the plasterboard 10 up until round cutting inserts 116, 152 will not come in contact with the gypsum Board 10 and begins to cut through the layers of material such as paper 12, 14. This is shown in fig.15b. Rotating the cutting blade 116, 152 are mounted so that they cut through the layers of material such as paper 12, 14.

As shown in figs, with continued advancement of the cutting tool 100 along the plasterboard 10 second breakaway lever 110 also is forced parallel to the bottom side 106 of the upper part 102. The rollers 124, 126, 148, 150 additionally facilitate the movement of the cutting tool 100 according to the drywall 10.

As shown in fig.15d when the cutting tool 100 PR is blijeda by the end of the plasterboard 10, the first breakaway lever 108 is returned to its original position.

In conclusion, as shown in figa, second breakaway lever 110 is returned to its original position.

Breakaway levers 108, 110 are, therefore, in order to prevent the convergence of the upper and lower portions 102, 104 together. If the upper and lower portions 102, 104 were joined together, it would be necessary to use a vise to separate the upper and lower portions 102, 104 due to the presence of magnetic forces.

On Fig shows a side view of another cutting tool 300 according to the present invention. The cutting tool 300 includes an upper portion 302 and bottom 304. Also shown is incompressible clip 307, which can be used during storage of the cutting tool 300. In addition, as shown in Fig, there are breakaway levers 308, 310, which can be rotated as described above.

On Fig shows the cross section of the cutting tool 300. In the upper part 302 has a circular cutting plate 316 and the magnets 358, 360. As shown in Fig, magnet 360 is closer to the circular cutting plate 316 than the magnet 358. It was found that when placing magnets 358, 360 thus provides improved control of the cutting tool 300 and facilitates cutting by eliminating vibration. The lower part 30 of the cutting tool 300 also includes a cutting plate 352 and the magnets 385, 387. As shown in figure 17, the magnets 385, 387 are located directly under the magnets 358 and 360, respectively.

On Fig shows the spatial separation of the parts the upper part 302 of the cutting tool 300. As shown in Fig, the upper portion 302 of the cutting tool 300 includes a section a the main body. On Fig shows two separating lever 308, 310, ready to install in the partition a the main body. The screws 310, 313 are used to secure the attachment section a the main body to the outer casing 302b. On Fig shows the presence of the retaining plate 319. On Fig it is also shown that the magnets 358, 360 is attached to the jumper 317. It was found that the jumper 317 contributes to the increase of the magnetic effect, thereby improving the efficiency of the cutting tool 300. Also shown here is the button 329 release plate which can be used to replace the insert if necessary, and the top form 327, which is designed to improve and facilitate its capture by the user.

On Fig shows a view in cross-section, which more clearly shows the upper portion 302 of the cutting tool 300. Button 329 release plate ready for introduction through a spring 359.

On Fig shows the breakaway lever axis 308 and 321, on which it turns. Shown here is also the spring 323, which is used to offset the breakaway lever 308 in essentially perpendicular relative to the upper portion 302 of the cutting tool 300 position.

On Fig shows the cartridge 388, containing all the cutting plate 316. As shown in Fig, cartridge 388 contains two half a, 388b, which can be locked in on each other with the help of protruding element s. When you snap the two halves a, s round cutting plate 316 is fixed between them and can rotate freely. After a period of use of the cartridge 388 may be removed using the buttons 329 release plate and inserted a new one containing the new inserts. Cartridge 388 may be secured within the cutting tool 300 using any suitable means.

On Fig shows the spatial separation of the parts the lower part of the cutting tool 300. As shown in Fig, the lower portion 304 includes a section a the main body and the outer casing 304b. Cartridge 388 can be released using the buttons 391 release plate which can be attached through a spring 395. On Fig shows magnetic tool 385, 387, attached using jumpers 393, made of low carbon steel. The screws 397 can be used to attach sections a foundations of the th body to the outer casing 304b.

On Fig shows the cross section of the lower part a cutting tool 300. As shown in Fig, magnet 387 is located closer to the cutting plate 352.

While we have described above specific embodiments of the invention, it should be understood that within the scope of the invention may include variations from the described embodiments. For example, you can use any suitable type of cutting plates. For example, you can use either fixed blade or rotary cutting plate. In certain embodiments of the exercise of the length of the breakaway levers can be adjusted using any suitable means. In addition, various cutting tools can have a breakaway levers of different lengths, allowing you to cut materials of different thickness. The magnetic field strength of the upper and lower parts can also be adjusted to obtain different depths of cut for cutting various materials, such as structurally complex construction plate containing a reinforcing layer. For example, you can cut any materials, such as drywall, glass, wood, laminated wood, cardboard, Lucic, tiles and any type of plastic. In addition, you can use any suitable type of magnetic media.

1. A cutting tool is NT configured to perform operations of cutting or incision, comprising upper and lower parts made with the possibility of breeding dividing means, and at least one of the upper and lower part contains the cutter, while the upper and lower parts are held together by magnetic attraction provided magnetic means containing first and second magnetic means located in the upper and lower parts, and the metal strip is located at the top and connects the first and second magnetic means in at least one of the upper and lower parts.

2. The tool according to claim 1, in which the upper and lower parts contain the cutter.

3. The tool according to claim 1, in which the first and second magnetic means are located in the front and back half of the respectively upper and lower parts of the cutting tool.

4. The tool according to claim 2, in which the first and second magnetic means, respectively, are essentially the front and essentially the back of the cutting tool.

5. The tool according to claim 1, in which the metal strip increases the magnetic attraction.

6. Instrument according to any one of claims 1 to 5, in which the first and second magnetic means selected from the permanent magnets, electro-magnets or magnetized metal.

7. The tool according to claim 1, in which m is Gnanou attraction is from about 0.1 to 20 Tesla.

8. The tool according to claim 1, in which when cutting drywall magnetic attraction provides cutting through or incising the paper layer from either side.

9. The tool according to claim 1, in which the cutter is a freely rotating essentially all the inserts.

10. The tool according to claim 9, in which the circular cutting plate located in the upper and lower parts, with the first and second magnetic means are essentially front and rear circular cutting blades.

11. The tool according to claim 1, in which the saw device is selected from a stationary blade, laser or heating devices or burning.

12. The tool according to claim 1, in which the cutter is located in the cartridge, made with the possibility of replacement if necessary.

13. The tool according to claim 1, in which the depth of the cut or incision made a cutting device, can be adjusted to provide different depths of cutting or incision.

14. The tool according to claim 1, in which the lower side of the upper and lower parts contains a rotating elements to facilitate movement of the upper and lower parts of the material being cut.

15. The tool according to claim 1, in which the separating means are retractable.

16. The tool according to claim 1, in which the separating means is located in front of and behind the cutting tool is A.

17. The tool according to claim 1, in which the separating means is attached to the top and displaced in a substantially perpendicular direction.

18. The tool according to claim 1, in which the separating means is made with the possibility of forced displacement in the position of essentially flat against the lower side of the upper part during cutting operations.

19. The tool according to claim 1, in which the gap formed by the separation means between the upper and lower parts can be adjusted.

20. The tool according to claim 1, which has a button release to secure the release of the cutting device when it is ready to be replaced.

21. The way the operations of cutting or incision using a cutting tool according to any one of claims 1 to 20, in which the cutting tool to promote the material to be cut, and the cutting tool to perform at least one incision or an incision on the surface of the material.

22. The method according to item 21, in which the cutting tool performs a cut or incision on the anterior and on the posterior surface of the material to be cut.

23. The method according to item 21 or 22, in which the retractable dividing means is moved from the first position essentially perpendicular to the bottom side of the upper and lower part of the cutting tool in a second position, in which usesto parallel to the bottom side of the upper and lower parts, and then return to the first position after the cutting.

24. The use of the cutting tool according to any one of claims 1 to 20 for operations cutting structural building slabs, glass, drywall, wood, laminated wood, cardboard, Lucite, tiles, plastics, mats fibreglass reinforced glass gypsum slabs or mats of glass fiber in the cement slabs.



 

Same patents:

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