Relief forming method in functional layer of article by planing (variants)

FIELD: working materials by cutting, engraving relief structures.

SUBSTANCE: method comprises steps of removing allowance at least for one pass of planning cutter having stem and cutting part in the form of trihedral pyramid; before starting working and at changing direction of cutting path for opposite one in zone of broken portions of cutting path and in portions of cutting path joined with small curvature radius, rotating cutter around lengthwise symmetry axis of stem by angle normalized by direction of cutting path; in order to improve working efficiency, using cutter with cutting portion in the form of regular truncated pyramid whose lengthwise symmetry axis is matched with lengthwise symmetry axis of stem and whose small base is apex of cutter; using each lateral face of said pyramid depending upon cutting sign as front surface of cutter; at changing cutting direction for opposite and in zone of broken portions of cutting path and also in portions of cutting path with small joining radius, using as front surface of cutter face of cutting part to be turned by minimum angle due to rotation of cutter for optimizing its spatial position relative to cutting surface.

EFFECT: enhanced working efficiency of method.

6 cl, 12 dwg

 

The invention relates to the processing of materials by cutting (slicing), mostly on machines with numerical control (CNC), and can be used, for example, for engraving the relief structures drawings on metallographic forms (used in the manufacture of printed products with a high degree of protection against forgery, in particular banknotes), where it is necessary to carry out the cutting process along the trajectories of broken parts and/or areas of small radii mates.

The closest in technical essence and the achieved result to the stated objects of the invention is a method of forming a relief in the functional layer of the product through processing planing described below.

The prior art method of forming a relief in the functional layer of the product through processing planing, according to which by at least one process of the passage of the cutter carry out the removal of the allowance in the functional layer of the product through the use of a planing cutter. The latter contains the shank and the cutting part made in the form of a triangular pyramid with a cross-section in the shape of an isosceles triangle. Thus, before beginning the treatment (as well as changing the direction of cut on the opposite; scrap the different sections cut path and in the parts of the cut path, mating with a small radius of curvature) carry out the rotation of the cutter around the longitudinal symmetry axis of its shank on the regulated direction of the path of the cutting angle. The rotation of the cutter is performed with the optimization of the spatial position of its front surface relative to the surface of the cutting process of the continuation of the passage. At the same time as the front surface of the cutting part can be used only one facet of the pyramid (EN, No. 2179094, 2002).

The main disadvantage described above and the currently used technologies of pattern formation in the functional layer of the product through processing planing on CNC machines is limited to approximately 25° a reversal of the cutter (without lifting, i.e. the material to be deleted allowance) in the process of planing. The reason is that the cross-section of the cutting part of the cutter of an elongated isosceles triangle. This form of cutter limits the angle of rotation (in the amount of retiring allowance) without lifting the cutter, because the free rear edge cuts into the material allowance, bends and collapses. This leads to the need to raise the cutter above the upper plane of the functional surface, changing the direction of cut, for example, on broken parts cut path.

As indicated in the and the that lathe, CNC turning speed of the cutter is much smaller than the velocity of the moving coordinates X, Y, Z, about 50% of the time (when lifting and rotation of the cutter and/or when it is turned directly into the material to be deleted allowance) the machine is idle, i.e. decreases the productivity of the production process.

The present invention was based on the task of creating such a technology of forming a relief in the functional layer of the product, which would greatly improve the performance of the process of planing by removing restrictions on the angle of rotation of the cutter during the cutting process without lifting it through the use of a planing cutter special design.

The task in relation to the first variant of the method (claims 1 to 4 formulas) is solved by that in a method of forming a relief in the functional layer of the product through processing planing, according to which by at least one passage carry out the removal of the allowance in the functional layer through the use of a planing cutter, containing the shank and the cutting part made in the form of a triangular pyramid, with before treatment, as well as changing the direction of cut on the opposite; broken sections cut path and trajectory, and always let the torii cutting, mating with a small radius of curvature, carry out the rotation of the cutter around the longitudinal axis of symmetry of the shank on the regulated direction of the path of the cutting angle with the optimization of the spatial position of the front surface of the cutter relative to the surface of cut, according to the invention using a cutter with a cutting part in the correct form of a truncated pyramid, the longitudinal axis of symmetry which is aligned with the longitudinal axis of symmetry of the shank, smaller base is the "top" of the cutter, each of its side faces, depending on the direction of cut is used as the front surface of the cutter, and when the direction of cut on the opposite and in the area of the broken sections of the cut path, and also on sites cut path with a small fillet radius as the front surface of the cutter uses the face of the cutting part, which by the above-mentioned rotation of the cutter must be deployed on the minimum angle to optimize its spatial position relative to the surface of the cutting process to the continuation of this passage.

Valid optimization of the spatial position of the front surface of the cutter relative to the surface of the cutting implement by its installation at an obtuse angle relative to the surface of the cutting amount is and which is less than 120° .

Appropriate (before mentioned rotation of the cutter at an angle exceeding 25°) to lift up the cutter with the provision of the "peaks" on the upper surface of the functional layer, and then to provide the rotation of the cutter on the regulated direction of continuation of the trajectory of the cutting angle and perform repeatedly bumping into the seam allowance of the functional layer on the source depth.

In the previous conditions reasonably raising and lowering of the cutter on sloping plots the trajectory of the cutting implement with a simultaneous message to it the main movement of the cutting region deleted allowance.

The task with regard to another variant of the method (claim 5 and claim 6 of the formula) is solved by that in a method of forming a relief in the functional layer of the product through processing planing, according to which by at least one passage carry out the removal of the allowance in the functional layer through the use of a planing cutter, containing the shank and the cutting part made in the form of a triangular pyramid, in this case before processing carried out optimization of the spatial position of the front surface of the cutter relative to the surface of cut, according to the invention using a cutter with a cutting part in the form of regular truncated pyramid, trailing the camping symmetry which is aligned with the longitudinal the symmetry axis of the shank, smaller base is the "top" of the cutter, each of its side faces, depending on the direction of cutting functionally may be the front surface of the cutter, and in the area of the broken sections of the cut path, and on the sections of the cut path with a small fillet radius, if the direction of the trajectory of the cutting angle equal to or close to 60°as the front surface of the cutter uses the face of the cutting part, the spatial position (at this time) is optimized with respect to the surface of the cutting process to the continuation of this passage.

Optimization of the spatial position of the front surface of the cutter relative to the surface of the cutting implement of the above-described manner, i.e. by means of its (the front surface) installation at an obtuse angle relative to the surface of cut, the value of which is less than 120°.

The invention is explained with graphics.

Figure 1 - identification of elements of the relief structures in the functional layer of the product.

Figure 2 - General view of the planing cutter with a cutting part in the form of regular truncated pyramid with sides of one of the front surfaces.

Figure 3 is a view As in figure 2.

Figure 4 - a section b-b in figure 3.

5 is a cross-section G-G of figure 2.

6 is a schematic representation of technology on the cutting romanymacedo cut path at the inner corner ϕ less than 90°but not equal to 60°.

7 is a schematic representation of technology in cutting the broken portions of the cut path at the inner corner ϕ 60°.

Fig - schematic representation of technology in cutting the broken portions of the cut path at the inner corner ϕ 90°.

Figure 9 - schematic representation of technology in cutting the broken portions of the cut path at the inner corner ϕ 90°.

Figure 10 - schematic representation of technology in cutting the broken portions of the cut path at the outer corner ϕ 180°.

11 is a schematic representation of technology cutting, changing the direction of cut on the opposite (reverse cutter, the reverse trajectory is indicated with a dash-dotted line).

Fig optimal position of the front surface of the cutter relative to the surface of the cutting.

The method of forming a relief in the functional layer of the product through processing planing is as follows.

First, it is useful to note that according to the present invention, the term "product" 1, as a rule, means of metallographic form containing complete engraving from a set of grooves and protrusions (relief), programmatically generated by computer graphics (before processing) and especiauy the required quality of the prints after the practical implementation of this relief in the functional layer 2 articles 1 (1).

Figure 1 is a graphic materials positional marked the cutting surface 3 and the upper surface 4 of the functional layer 2.

Before the implementation of the patented process generated in the functional layer 2 products 1 General engraving share (software) on a separate processing objects - pictures, representing the completed part of the engravings, which are not connected, for example, the General tabs with other finished parts of this engraving.

It should be noted that the stated processing technology can be practically implemented only through a planing cutter 5 special (described below) of the structure.

This planer cutter 5 includes a shank 6 and the cutting part 7 made in the form of a right triangular truncated pyramid, the smaller base of which is functionally "top" 8 cutter 5, and each of its side faces 9, 10, 11 is located at an acute angle α to the longitudinal axis 12 of the symmetry of the shank 6 and functionally may be the front surface of the cutter 5 (depending on the spatial position of this edge 9 or 10, or 11 relative to the direction V of cut).

The longitudinal axis 12 of the symmetry of the shank is aligned with the longitudinal axis of symmetry of the cutting part 7.

The edges of the pyramid, which is functionally side cutting edges 13, Peres, who are stated in the space with the longitudinal axis of symmetry of the cutting part 7 (or axis 12 of the shank, that adequate) at an acute angle.

The method of forming a relief in the functional layer 2 items 1 through processing planing according to claims 1 to 4 formulas implemented as follows. By at least one pass of the cutter 5 carry out the removal of the allowance in the functional layer 2 through the use of a planing cutter 5, containing the shank 6 and the cutting part 7. The latter is in the form of a right triangular truncated pyramid. Thus, before beginning treatment, as well as changing the direction of cut on the opposite and in the area of polygonal areas (and areas of small radii mates trajectory 14 of the cutting implement rotation (arrow ω) cutter 5 around the longitudinal axis 12 of the symmetry of the shank 6 on the facing direction of the path 14 of the cutting angle with the optimization of the spatial position of the front surface (i.e. faces 9, or 10, or 11) cutter 5 on the surface 3 of the cutting. If the direction of cut on the opposite and in the area of the broken sections of the trajectory 14 of cutting (as well as in areas mates with a small radius of curvature) as the front surface of the cutter 5 use the line 9, or 10, or 11 of the cutting part 7, which (by the above-mentioned rotation of the cutter 5) must be deployed on the minimum angle for optimization of PR is spatial position relative to the surface 3 of the cutting process to the continuation of this passage.

Optimization of the spatial position of the front surface (i.e. one of the edges 9, 10, 11) cutter 5 on the surface 3 of the cutting is carried out by it (i.e. the front surface) installation at an obtuse angle θ relative to the surface 3 of the cutting, the value of which is less than 120°. Otherwise, the other face will touch (slide) of the processed surface.

Separate serious issue is the process of stroikottage from the cutting zone. Because of the tilt of the front surface (face) of the cutting part of the material allowance will be squeezed out during cutting, and possibly will lead to the formation of burrs (work hardening) on the surface of the functional layer. However, if the front surface of the cutter will be spatially oriented at an obtuse angle θ to the surface of the cut. the chip will result in the treated area.

Before the said rotation of the cutter 5 by an angle exceeding 25°you can raise cutter 5 with securing the release of the "peaks" 8 on the upper surface 4 of the functional layer 2. After this to ensure the rotation of the cutter 5 on the facing direction of the continuation of the trajectory 14 of the cutting angle (arrow ω) and to carry out its re-cutting the seam allowance of the functional layer 2 on the source depth.

This process not only the reception of both the accounts for the increased durability of the cutter 5, but also allows an additional sample of the remaining allowance of 15 in the corner zones (inner corners), for example, broken sections of the trajectory 14 of the cutting.

Raising and lowering of the cutter 5 on sloping sites trajectory 14 cutting is permissible to perform with simultaneous notification to him of the chief of cutting movement (arrow V) in the region to be deleted allowance.

This processing method allows for the maximum of an additional sample of the remaining allowance of 15 in the corner zones (inner corners), for example, broken sections of the trajectory 14 of cutting, and in conjunction with the previous provides increased durability of the cutter 5.

The method of forming a relief in the functional layer of the product through processing planing according to another embodiment (see p.5 and p.6 claims) is similar to the above. The difference consists only in the fact that it is not necessary to rotate the cutter 5 around the axis 12 of the shank 6. However, it can be used only in some special cases. Namely, when the direction change path 14 (in the area of the broken sections) cutting at an angle equal to or close to 60°. At the same time as the front surface of the cutter using the line 9, or 10, or 11 of the cutting part 7, the spatial position (at this time) is optimized relative to p is the surface 3 of the cutting process to the continuation of this passage.

In this embodiment, the optimization of the spatial position of the front surface of the cutter 5 on the surface 3 of the cutting is also performed by her (the front surface) installation at an obtuse angle relative to the cutting surface 3, the value of which is less than 120°.

It is obvious that according to the claimed technology planing using special planing cutter greatly improving the productivity of the production process by reducing the time for rotation of the tool. For example, according to known prior art methods, changing the direction of planing on the opposite it is necessary to provide the rotation of the cutter 180°, while according to the invention the cutter enough to turn on an angle in the range from 60°but less than 90°.

Thus, if you make a cutting edge of a cutter in the form of a truncated triangular pyramid, all three faces will be the same (equal to the cutting process), and when processing, you will move on to cutting with one face (front surface) on the other.

More technology planing according to the invention disclosed in graphics and further explanation is not required. All diagrams cutting solid triangle marked previous put the e cross-section of the cutting part of the cutter, and dashed triangle - its subsequent position (i.e. after changing the direction of the cut path).

It is advisable only to describe more fully optimized cutting scheme on 6, 8, 9 and 11.

From these diagrams it follows that in order to eliminate the output of the corresponding edge (cutting edge 13) beyond the nominal trajectory 14 cutting (i.e. unauthorized sampling allowance in the functional layer), and bring the other cutting edge 13 on the corresponding portion of the nominal trajectory 14 cutting, you must ensure the following.

According to the scheme of cut 6 to combine with a nominal trajectory 14 cutting the corresponding cutting edge 13 faces 10, should the cutter 5 (after rotation) to provide additional movement in the direction of the nominal trajectory 14 cutting or cutting surface 3) in direction of arrow S to the h value.

According to the scheme of cutting pig to eliminate trimming (when turning the cutter 5) already treated surface 3 of the cutting edge 13 faces 11, you must inform the cutter 5 additional movement in the direction of arrow S by the value of h (before rotation of the cutter 5).

According to the scheme of the cutting in Fig.9, in order to avoid clipping (line 11) has already been processed (line 9) of the cutting surface 3 during rotation of the cutter 5, you should tell him(before the turn) further moving in the direction of arrow S 1the value of Δ1. And to combine the corresponding edge faces 13 9 (after turning cutter 5) with a nominal trajectory 14 cutting, you need the cutter 5 to provide additional movement in the direction of the nominal trajectory 14 cutting the arrow S by the value of h+Δ1.

According to the scheme of cut 11 in order to combine the respective edge faces 13 10 with a nominal trajectory 14 cutting, you need the cutter 5 to report (after the turn) further moving in the direction of arrow S by the value of h+Δ1to the direction of the nominal trajectory 14 cutting (dash-dotted line).

All of the above for more movements, usually performed programmatically.

It is obvious that additional move is necessary to ensure that only in those cases when their values exceed the tolerance to the processing structures of the formed relief, in particular the surface 3 of the cutting.

Thus, patented variants of the method of forming a relief in the functional layer of the product by processing the planing of the specialized structures of the formed pattern can be implemented in various industrial fields. For example, the formation of mechanically relief in the functional layers of metallographic forms (cliche) for deep p the parts with sub-micron resolution of the formed structures (printed and gap elements), used primarily in the production of banknotes and other securities (requiring a high degree of protection against forgery), as well as in other fields of technology where it is needed to obtain the functional layer of the product prints the specified sub-micron resolution of its structures with arbitrary configuration.

1. The method of forming a relief in the functional layer of the product through processing planing, according to which by at least one passage carry out the removal of the allowance in the functional layer through the use of a planing cutter, containing the shank and the cutting part made in the form of a triangular pyramid, thus before the beginning of treatment and when changing direction of the cut path on the opposite, in the area of the broken sections cut path and trajectory of the cutting, fitting with a small radius of curvature, carry out the rotation of the cutter around the longitudinal axis of symmetry of the shank on the regulated direction of the path of the cutting angle with the optimization of the spatial position of the front surface of the cutter relative to the surface cutting, characterized in that use a cutter with a cutting part in the correct form of a truncated pyramid, the longitudinal axis of symmetry which is aligned with the longitudinal axis of symmetry of the shank, the less the ground is the top of the cutter, each of the side faces of the said pyramid depending on the direction of cut is used as the front surface of the cutter, and when the direction of cut on the opposite and in the area of the broken sections cut path and areas cut path with a small fillet radius as the front surface of the cutter using the face of the cutting part, which by the above-mentioned rotation of the cutter must be deployed on the minimum angle to optimize its spatial position relative to the surface of the cutting process to the continuation of this passage.

2. The method according to claim 1, characterized in that the optimization of the spatial position of the front surface of the cutter relative to the surface of the cutting is carried out by its installation at an obtuse angle relative to the surface of cut, the value of which is less than 120°.

3. The method according to claim 1, characterized in that before the said rotation of the cutter at an angle exceeding 25°carry out the rise of the cutter with the output of the smaller base of its cutting portion on the upper surface of the functional layer, and then provide rotation of the cutter on the regulated direction of continuation of the trajectory of the cutting angle and perform repeatedly bumping into the seam allowance of the functional layer on the source depth.

4. The method according to claim 3, the tives such as those that raising and lowering of the cutter on sloping plots the trajectory of the cutting is performed with simultaneous message to it the main movement of the cutting region deleted allowance.

5. The method of forming a relief in the functional layer of the product through processing planing, according to which by means of at least one passage carry out the removal of the allowance in the functional layer through the use of a planing cutter, containing the shank and the cutting part made in the form of a triangular pyramid, in this case before processing carried out optimization of the spatial position of the front surface of the cutter relative to the cutting surface, characterized in that use a cutter with a cutting part in the correct form of a truncated pyramid, the longitudinal axis of symmetry which is aligned with the longitudinal axis of symmetry of the shank, smaller base is the top of the cutter, each of the side faces of the said pyramid depending on the direction cutting is used as the front surface of the cutter, and in a zone of broken sections cut path and areas cut path with a small fillet radius in the direction of the trajectory of the cutting angle equal to or close to 60°as the front surface of the cutter using the face of the cutting part, the spatial position to the Torah in a given time is optimized relative to the surface of the cutting process to the continuation of this passage.

6. The method according to claim 1, characterized in that the optimization of the spatial position of the front surface of the cutter relative to the surface of the cutting is carried out by its installation at an obtuse angle relative to the surface of cut, the value of which is less than 120°.



 

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Planing cutter // 2311271

FIELD: working materials by cutting, engraving relief structures.

SUBSTANCE: cutter includes stem and cutting part in the form of trihedral truncated pyramid having lateral faces inclined by acute angle relative to lengthwise symmetry axis of stem; small base of said pyramid is apex of cutter. In order to improve efficiency, said truncated pyramid is regular one. Each lateral face of such pyramid is designed for using as front surface depending upon its spatial position relative to cutting direction. Symmetry axis of cutting portion may be matched with lengthwise symmetry axis of stem.

EFFECT: improved design of cutter.

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Planing cutter // 2311271

FIELD: working materials by cutting, engraving relief structures.

SUBSTANCE: cutter includes stem and cutting part in the form of trihedral truncated pyramid having lateral faces inclined by acute angle relative to lengthwise symmetry axis of stem; small base of said pyramid is apex of cutter. In order to improve efficiency, said truncated pyramid is regular one. Each lateral face of such pyramid is designed for using as front surface depending upon its spatial position relative to cutting direction. Symmetry axis of cutting portion may be matched with lengthwise symmetry axis of stem.

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EFFECT: improved quality of ready strip blank for shaping.

1 ex

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1 tbl, 1 ex

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FIELD: machine engineering, possibly manufacture of different types of cutters, milling cutters, drills, screw taps and so on.

SUBSTANCE: tool is made of steel containing as main structural component ferrite a-Fe alloyed with chrome and molybdenum. Mean size of a-Fe blocks is no more than 35 nm; micro-deformations of crystal lattice of a-Fe are no more than 4.3 x 10-3. Invention provides increased strength and lowered embrittlement of ferrite a-Fe.

EFFECT: increased useful life period of tool.

1 tbl, 1 ex

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EFFECT: increased useful life period of tool.

1 tbl

FIELD: machine engineering, possibly manufacture of different types of cutters, milling cutters, drills, screw taps and so on.

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1 tbl, 1 ex

FIELD: plastic working of metals, possibly in rolling mill lines for cross cutting of metallic sheets.

SUBSTANCE: shears include mounted in housing lower support in which stationary straight cutter is arranged; drive upper support; cylinder whose body is secured to lateral surface of housing; control system. Shears are provided with additional cylinder whose body is jointly secured to opposite lateral surface of housing. Rods of said cylinder and of additional cylinder are jointly coupled with upper support. Motion drive of upper support is in the form at least of two hydraulic cylinders jointly coupled with upper part of housing and having rods jointly secured to upper support. Control system includes units providing movement of rods of all said cylinders for creating possibility for moving upper support according to preset law.

EFFECT: increased efficiency of shears at simultaneous simplification of their structure.

4 dwg

FIELD: micro- and(or) nano-technology.

SUBSTANCE: method comprises steps of removing allowance in central zone of working during rough pass and then finishing surfaces of lateral faces of shaped fragments of pattern along the whole depth of rough working pass. It is realized at using only one lateral edge of cutter to be rotated around its lengthwise axis in curvilinear and broken portions of its cutting path while providing optimal three-dimension position of front surface of cutter relative to cutting surface. Rough passes are performed by means of cutter while using in first pass simultaneously two lateral cutting edges and then using only one of said cutting edges turned to formed lateral face of shaped fragment of pattern. In order to enhance accuracy and quality of working by providing possibility of removing allowance in zones of pattern with broken cutting path during process of removing allowance remained after rough working at finishing, in zones of internal angles of broken portion of cutting path and in zone of portions with small joining radius cutter is lifted for providing outlet of its working part onto upper plane of functional layer of article. Then cutter is turned by angle normalized by cutting path going-on line and it is again fed-in to allowance portion remained after lifting cutter by initial depth. Cutter is lifted and descended while simultaneously imparting to it main cutting motion into zone of removed allowance. Planing cutter includes stem and working part restricted by flat front surface with lateral cutting edges and profiled back surface with lead angle equal to zero for forming end portion of working part. Cross section of working portion is in the form of axially symmetrical figure. Generatrices of back surface are inclined by the same angles relative to axis of cutter stem. End portion of working part is flat one and it is the form of oval-half whose plane is spatially inclined by acute angle relative to front surface. Rib formed by crossing of end portion and front surface serves functionally as third cutting edge; it is oriented by angle 90° relative to lengthwise axis of cutter.

EFFECT: improved accuracy and quality of planing by such cutter.

7 cl, 20 dwg

Cutting pliers // 2292995

FIELD: plastic working of metals, possibly cutting shaped, rod materials, tubes.

SUBSTANCE: cutting pliers include hydraulic cylinder with rod and body, control unit, two levers having common rotation pivot rigidly joined with body of hydraulic cylinder, cutters with cutting edges secured to free ends of levers whose opposite ends are jointly coupled with rod of hydraulic cylinder. Said cutters are detachable, lengthwise and crosswise ones. Lengthwise cutters have pointing angle α in range 55 - 65° and they are arranged according to condition providing opening angle of edges β at closing lengthwise cutters along outer end in range 15 - 25°. Crosswise cutters have pointing angle less by 5 - 10° of pointing angle of lengthwise cutters.

EFFECT: enhanced efficiency of safe cutting of metallic rods, reinforcing members and so on, increased wear resistance of cutting members.

4 dwg

FIELD: plastic working of metals, possibly cutting sheet, shaped and rod materials.

SUBSTANCE: combination type shears include hydraulic cylinder with control unit; two levers having cutters with cutting edges and mounted with possibility of rotation one towards other in common axle. Cutting edges have cutting teeth. Fixing teeth are formed on outer surface of lever ends. Length of cutting edges consists at least of 0.6 of level length. Cutting edges are tapered one to other by angle 40 - 50° relative to cutting line. Cutting teeth have pitch Z = 5 - 8 mm, thickness l1 = (0.2 - 0.25)Z, height h = (0.25 - 035)Z and width of initial land l = 0.8 -1.0 mm. Each tooth is tapered by angle α = 60 - 80° to side of lever rotation axis and it is sharpened by angle β = 25 - 35°. Fixing teeth have pitch 3 - 5 mm, depth 1.0 - 3.0 mm and inclination angle 60 - 80° to side of lever rotation axis. In variant levers end portions are tapered on their outer surface along length of 4 - 10 teeth by angle α1 = 20 - 40°. On inner surface of levers before cutting teeth smooth supporting surface with width 20 - 40 mm is formed.

EFFECT: enhanced efficiency of cutting and drawing apart due to using optimal non-symmetrical configuration of cutting and drawing apart fixing teeth.

2 cl, 4 dwg

FIELD: cutting out flat flange gaskets and other different-contour parts, for example rectangular, round or elliptical from reinforced blanks, mainly on base of heat expanded graphite reinforced at one or both sides by means of metallic foil.

SUBSTANCE: unit includes electromechanical apparatus mounted in strut placed on base and device for fixing reinforced blank. Electromechanical apparatus includes electric drive, movable cutter that may perform reciprocation motion in vertical plane and that is joined with electric drive through device for moving movable cutter; two rigidly mounted stationary cutters arranged in base of unit and mutually separated by gap for passing movable cutter. Base is in the form of plate having on upper and lower sides lengthwise guiding grooves mutually communicated by means of through elongated slit. Device for fixing is placed inside slit with possibility of motion in it. Gap is normal relative to through slit.

EFFECT: possibility for simplifying process of making complex shape gaskets.

13 cl, 7 dwg

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