Cutting tool holder and base part

FIELD: oil and gas industry.

SUBSTANCE: cutting tool holder has insert and fixing head, note that the fixing head has socket for cutter, and fixing head in the direction of tool supply, at least, partially protrudes forward in relation to the insert head or above it, note that the fixing head has solid pre-shaped area with, at least, one bearing surface made in direction of supply, at least, partially before the insert head. Base part for cutting tool holder location has pin socket and supporting head that forms a support, note that supporting head is installed in the direction of supply before the pin socket and fixes the support before the pin socket.

EFFECT: endurance of large loads that appear at open-pit mining and optimised distribution of efforts as well as long service life and increase of operating reliability.

16 cl, 8 dwg

 

The invention relates to a tool holder with plug-nozzle and nozzle retainer, and retainer cap includes a slot cutter and locking the nozzle in the direction of feed of the tool at least partially speaks to the detachable showerhead or above it.

The invention relates also to the clamping parts and to support the nozzle, forming a support. Such clamping parts are used for placement holders.

From US 3992061 known instrumental combination consisting of the clamping parts and installed in its holder. For this purpose, the clamping part includes a plug socket, to which the front side is adjacent plot of the clamping parts with threaded socket. Threaded socket goes into the plug socket. Tool holder equipped with a detachable showerhead, which can be installed in the plug socket of the clamping parts. To plug the nozzle connected to the mixing nozzle, provided with a slot cutter in the form of through holes. Locking the nozzle in the direction of feed of the tool partially protrudes from the plug nozzle. Against the direction of feed as the mixing nozzle, and push the nozzle is provided with support surfaces. For fixing the tool holder into the threaded socket of the clamping part is screwed into the screw. He presses the tool holder support surface is hostame to respectively made of the response surfaces of the clamping parts. During operation of the tool on the cutter, mounted in a tool holder, the force acts. It occurs when the cutter cuts into the deleted material. While the cutting tool, the direction of the force varies, resulting in the alternating load. It turned out that in such instrumental combinations due to the alternating load of the fastening screw can become loose, resulting in the tool holder will be further reliably fixed in the clamping parts. In addition, such holders for treatment works with a high vertical feed of the tool, as, for example, you must open cast mining (Surface mining), are of insufficient size. In particular, in the transition region between the retainer and plug nozzles often occurs breakage of the tool.

Therefore, the developed system, in which the tool holder opposite the clamping parts behind the insertion of the nozzle in a direction opposite to the feed direction of the tool, has a large bearing surface, as shown in US 5378050.

In addition, the prior art between the clamping part and the tool holder are known compounds in the form of a dovetail. This option is shown, for example, in US 4915455. These compounds in the form of a dovetail very vulnerable. Because of znakoperemennykh prepisovanie surface between the clamping part and the tool holder fail which leads to premature full output of the system.

In the US 3498677 to improve the load transfer between the tool holder and the clamping part clamping nozzle preformulated to plug the nozzle holder so that it acted in the opposite direction to the feed direction of the tool.

The objective of the invention is to create a tool holder, which, in particular, could reliably withstand the high loads that occur when the opencast mining (Surface mining).

In addition, the object of the invention is the creation of the clamping parts for toolholder, the toolholder could rely on the optimum load.

Task relating to the tool holder, is solved due to the fact that the locking cap includes a support section with a support surface located in the feed direction at least partially in front of the plug nozzle. Thus, the fixing part of the nozzle with its fixed reformovanii support surface that extends in the feed direction, can be supported with the counter. Thus, the location of maximum transmission of the forces arising during operation of the tool, is installed close to the cutting head. Thus there is a distinct reduction in operating torque. This calculation of the optimal strength rez is oderately explicitly provides great durability and increases operational reliability.

According to a preferred variant implementation of the invention provides that the support site had two supporting surface set at an angle to each other. Thus, we achieve a centered and gapless orientation of the tool holder on the corresponding response surfaces of the clamping parts. This device can withstand large loads, even if they are across the main direction.

The preferred image bearing surface located on both sides of the middle transverse plane passing through the Central longitudinal axis of the slot cutter and in the longitudinal direction of the insertion nozzle. Because of this symmetrical execution is a uniform distribution of forces on both surfaces. A possible variant of the invention provides that the support surface or support surface, formed the guide slide, glide direction which is opposite to the direction (v) the filing instrument. When mounting the tool holder can be mounted with their support surfaces on the mating surfaces of the clamping parts. Then the tool holder is pulled together with the clamping part, and it can smoothly jump to an assigned position in its guide slip. This provides an unambiguous and reliable setup is. Consequently, the guide of the slide serves to convert the tool holder at its specified position. In the installation position of the tool holder is firmly connected with the clamping part so that any relative movement between these elements becomes impossible.

According to the invention can be provided that the support surface or support surface have been part of the extension protruding above the slot cutter in a direction across the middle longitudinal axis of the slot cutter. Extensions form the surface of the chip, which protects the clamping part from abrasion.

A possible alternative of the invention may be that the plug cap on the area of its front side facing in the direction of feed of the tool contains at least one pressure surface set at an angle less than 90°, preferably less than 80°, to the Central longitudinal axis of the plug nozzle. This push surface is used for retraction of the tool holder with the clamping part. Due to the fact that it is set at an angle to push the nozzle through a pressure surface on the one hand can kiss the efforts of the submission (for example, by means of the adjusting screw in the direction of the longitudinal axis of the plug nozzle. In addition, when the load on the pressure surface of the ü is formed component of the force, acting transversely to the longitudinal extent of insertion of the nozzle, which may push the push the nozzle in the holder clamping the workpiece in a direction opposite to the feed direction. Thus, it is a double lock holder, namely: on the one hand, due to the coupling with the rear side on the holder and on the other, with the supporting surface of the supporting section located in front of the detachable showerhead.

To this end plug nozzle preferably contains on the area of its rear end opposite to the feed direction of the tool, additional reference section with one or more support surfaces.

It is possible that the supporting surface is positioned at an angle to each other, so that, in turn, be centering of the tool holder relative to the clamping part, and optimized distribution of forces large transmitting surfaces for operating forces.

Preferably the support surfaces are essentially in the direction of the longitudinal axis of the plug nozzle. Thus, in the longitudinal direction of the insertion nozzle creates a guiding slide. Now when as a result of wear of the clamping part wears out on the section of their support related to the support section of the tool holder from the front side, then the CE is still the possibility of using this clamping parts for new, Neizvestnyj, holders. Using the guide sliding from the back side can be adjusted adjustment of the cutter.

The objective of the invention in relation to the clamping part is solved due to the fact that the reference nozzle, forming a bearing installed before you plug socket in the direction of feed of the tool and that bearing is formed before the plug socket. Thus, the clamping part provides optimized force distribution, since the reference nozzle from its support can be fed close to the top of the cutter. In particular, the above advantages are disclosed for use on the clamping parts of the respective tool holder.

Preferably the support forms a bearing surface, the component with the longitudinal axis of the insertion nozzle obtuse angle. Thanks to an obtuse angle, which preferably would be located in the range between 200-250°may force distribution, optimized in terms of variable direction of action of force during operation of the tool. If provided, to behind the plug socket in a direction opposite to the feed direction was installed nozzle, which is a plot of the plug socket captures at least one arrester, it is possible for the above-mentioned double bearing holder. In particular, it can be the t to be fixed from the front side to the reference nozzle, and on the back on the holder. As a result, on the one hand, it creates a large surface for the transmission of forces, and on the other, optimally captured variable direction of the force.

The preferred embodiment of the invention is that the bearing and/or arrester contain two supporting surface set at an angle to each other. With this arrangement of the support surfaces is achieved centering of the tool holder relative to the clamping part. In addition, due to the inclined bearing surfaces become possible large surface to transfer forces. Installation angle can be selected so that in a small installation volume you can perform the clamping parts are optimized for strength.

Safe clamping of the tool holder based on the details of the embodiment of the invention is that the reference nozzle before the plug socket in the direction of feed of the tool has a threaded socket, passing in the plot plug socket.

Below the invention is explained in more detail by the example of execution shown in the drawings, in which:

figure 1 depicts a front view of the combination tool with the clamping part and the tool holder, in the future,

2 is a rear view of the combination tool of figure 1, in the future, the willow,

figure 3 is a vertical section of the combination tool of figure 1 or 2,

4 is a front view of the holder according to the combination of the tool of figure 1 to 3, in the future,

5 is a rear view of the tool holder according to figure 4,

6 is a vertical section of a tool holder according to figure 4 or 5,

7 is a top view of the clamping parts in figures 1 to 3, in perspective, and

Fig - vertical section of the clamping part 7.

Figure 1 shows the clamping part 10, having a bottom side 11 with concave mounting surfaces. With these mounting surfaces of the clamping part can sit down on the cylindrical outer surface of the milling roller and rigidly welded thereto. With this clamping part 10 is connected to the tool holder 20.

As shown in figure 3, the clamping part 10 includes a plug socket 15, the host plug-in nozzle 21 of the holder 20. Below an embodiment of the tool holder 20 is illustrated in more detail with reference to figure 4-8.

As shown in figure 4, the holder 20 has inserted the nozzle 21, which is at an angle connected to the mixing nozzle 25. In the ideal plug-in nozzle 21 and the mixing nozzle 25 form an obtuse angle. Insertion nozzle 21 formed at the area of its front side 22 facing in the direction (v) the filing of the tool, the front side of 21.1. In this prednamerennoe 21.1 made two donations so they form two pressure surfaces 21.2. When this pressure surface 21.2 installed at an angle to the longitudinal axis of the plug nozzle 21. The protrusion insertion nozzle 21, the bearing pressure surface 21.2, through the side sections 21.3 enters the lateral surface of 21.4. The side surface 21.4 oriented in the direction (v) the filing of the instrument and converted to the sides of the tool. As can be seen in figure 5, the sides 21.4 moving to the area of the rear side 23 of the insertion nozzle supporting surface 21.5. While supporting surface 21.5 arranged at an angle to each other. Support surface 21.5, in turn, are connected by a transition surface 21.6 and facing in the direction opposite to the direction v supply.

The retainer cap 25 provided with a socket 26 for the cutting tool in the form of a cylindrical hole. Median longitudinal axis M of the slot 26 to the cutter and the longitudinal axis L-plug nozzle ideally form an angle in the range between 100 and 160°, preferably 130°. The slot 26 to the cutter through the extension 27 of the input enters bearing surface 25.3. When this bearing surface 25.3 passes radially socket 26 to the cutter. On the opposite side from the slot 26 to the cutter bearing surface 25.3 enters narrowing 25.1 cross-section. Narrowing 25.1 cross-section made in the form of a truncated cone and translates the side surface (25.2 of the tool holder 20 in the bearing surface 25.3. The mixing nozzle 25 contains the area under the socket 26 for two cutter bearing surface 29 installed V-shape at an angle to each other. As can be seen in Fig.6, the supporting surface 29 because of their inclined install facing in the direction of the free end of the plug nozzle and simultaneously in the direction (v) the filing and pass, as shown in figure 3, in parallel or essentially parallel to the median longitudinal axis M of the slot 26 to the cutter. As shown in figure 5, the mixing nozzle 25 has a lateral extension 28, which ends with the supporting surface 29. The supporting surface 29 and the supporting surface 21.5 directed in opposite directions.

Following execution of the clamping part 10 is illustrated in more detail with reference to Fig.7 and 8.

The clamping part 10 includes a plug socket 15, the cross section of which is adapted to the outer contour of the plug nozzle 21 of the holder 20. With the front side of the plug socket 15 is limited by the abutment of the nozzle 12. In the bottom nozzle 12 of the threaded socket 13 is made in the form of a thread. Threaded socket 13 goes into the plug socket 15. On the opposite side of the plug socket 15 threaded socket 13 ends with the extension 13.1 holes. The reference nozzle 12 includes at its upper section, located radially outside of the bearing 18 formed in one of two support over the awns 18.1. Both the supporting surface 18.1 arranged at an angle to each other. Installation of the corners of the support surfaces 18.1 tailored to the installation reference surfaces 29 of the tool holder 20, so that the supporting surface 29 of the tool holder 20 can be positioned on the supporting surfaces 18.1 clamping parts 10 plane. Support surface 18.1 for the purposes of a certain fit of tool holder 20 are connected to each other ledge 18.4 shifted back.

On the rear side of the plug socket 15 is limited by the counter 16. The holder 16 is part of the rear nozzle 17, protruding above the plug socket 15 against the direction (v) the filing. The holder 16 is formed with two additional support surfaces 16.1, arranged at an angle to each other.

These additional supporting surface 16.1, in turn, shape and spatial arrangement adapted to support surface 21.5 of the tool holder 20, so maybe plane fit additional supporting surfaces 21.5 the reference surfaces 16.1. Opposite bearing surfaces 18.1 plug socket 15 is limited by the free surface 18.2. In the direction (v) the filing tool plug socket 15 is limited to two lateral connecting sections 19. Educated connecting sections 19 of the inner wall facing Stec momu socket 15, through the free surface 18.5 pass into the wall 18.6, which, in turn, is oriented in the direction (v) the filing instrument. Wall 18.6, in turn, terminate at the free surface 18.2. As clearly seen in figure 7, the nozzle 17 is made excavation 17.1.

Installation of the tool holder 20 on the clamping part 10 is as follows.

First, the tool holder 20 of its plug-in nozzle 21 is installed in the plug socket 15 of the clamping part 10. Then, as seen in figure 3, the threaded socket 13 as a fixing element 14 is screwed into the setscrew. The fastening element 14 has a clamping surface adjacent to the pressure surface 21.2 of the tool holder 20. When this clamping surface need not be flat, but may also be spherical. Figure 1 shows that for fixing the tool holder 20 are two of the fastening element 14, however, in the clamping parts 10 are also two threaded socket 13. When tightening fasteners 14 of the fastening element 14 presses on a pressure surface 21.2. By installing a pressure surface 21.2 at an angle to the Central longitudinal axis of the insertion nozzle 21 by means of the fastening element 14 to push the nozzle 21 is applied to the retracting force. At the same time formed a component of the force directed against the direction (v) the filing and prizhimaya the plug nozzle 21 to the holder 16. Component of the force directed along the longitudinal axis of the insertion nozzle 21, enters the supporting surface 18.1 bearing 18 in contact with the support surfaces 29 of the tool holder 20. Tightening the fasteners 14 leads now to the fact that, as clearly seen in particular in figure 3, the tool holder 20 finds support on both sides of the median longitudinal axis of the insertion nozzle 21. On the one hand, the backup using controvery 16 is created on the rear side of the median longitudinal axis, and on the other, using the support 18 from the front side of the median longitudinal axis. Now the mounting screw 14 acts on the push-in nozzle 21 so that the tightening of the tool holder 20 is on the anvil 18 and the holder 16. This ensures reliable and captive mounting of the tool holder 20.

In addition, figure 3 shows that the extension 13.1 holes threaded holes 13 can be used the protective element 14.1, closing the socket tool of the fastening element 14.

As the clamping part 10, and the cutter 20 is made essentially mirror-symmetrical relative to the Central transverse plane of the corresponding structural elements, passing in the direction (v) the filing. This contributes to an even transfer of load.

During operation of the cutter with a round rod of conventional design, mounted in the socket 26 is La cutter, cut into a disposable material, such as coal seam. When this box load mainly falls on a support consisting of support 18 and the support surface 29. During insertion of the tool in the feed (v) the holder 20 is also pressed into the holder 16. Fit tool holder 20 over a large area, which ensures a reliable transmission of force.

As can be seen in figure 3, the simple installation of the tool holder 20 on the clamping part 10, in particular, is ensured by the fact that in both the above-mentioned Central bearings (bearing 18 and arrester 16) there is only one bearing. On the part of the ledge 18.4, free surface, 18.2, walls 18.6 rear surfaces 18.5, and connecting section 19 of the plug nozzle 21 is released from the plug socket 15. Now if during the operation of the clamping part 10 is wear of the bearing surfaces 18.1, the ledge 18.4 forms a space for drainage. Removal of the tool holder 20 from the ledge 18.4 makes possible adjustment of the tool holder 20 in case of wear. While compensation for wear may occur, in particular, because the supporting surface 18.1 and additional support surface 16.1 form slideways on which the tool holder 20 can slide when pulling up. This option is run, in particular, is becoming the in, that the clamping part 10, as is usually required, has a lifespan of several life cycles of the holders 20. In this case neizvestnye the holders 20 can continue to securely tightened and fixed to partially worn based items.

During operation of the cutter with a round rod bounces overburden rock loosening from the holder 20 on the plot side surface of 25.2. This overburden rock is served outside on the expanders 28, thereby protecting the clamping part 10 from the abrasive effect of the overburden.

When the wear of the cutter with a round rod it can simply be replaced. This is possible because the notches 17.1 in the clamping part 10 together with the notch 24 in the tool holder 20 form a socket for the tool. It can be installed puller, acting on the rear side of the cutter with a round rod and eject it from the slot 26 to the cutter. As can be seen in figure 5, the socket 26 for cutter spatially connected with the notch 24.

1. Tool holder with plug-in nozzle (21) and the locking cap (25), and the mixing nozzle (25) contains a slot (26) for the cutter, and with the locking bore (25) in the direction (v) the filing of the tool at least partially protrudes forward of the plug nozzle (21) or over it, otlichuy is the, that the mixing nozzle (25) is fixed reformovanii area, at least one bearing surface (29), made in the feed direction, at least partially, before the plug-in nozzle (21).

2. Tool holder according to claim 1, characterized in that the supporting section contains two support surfaces (29)located at an angle to each other.

3. Tool holder according to claim 2, characterized in that the support surface (29) are located on both sides of the middle transverse plane passing through the Central longitudinal axis of the slot (26) for the cutter in the direction of the longitudinal extent of insertion of the nozzle (21).

4. Tool holder according to claim 1, characterized in that the bearing surface (29) or support surface (29) form the guide slide.

5. Tool holder according to claim 1, characterized in that the supporting surface (surface) of (29) is (are) part of the expansion (28)acting in a direction across the middle longitudinal line of the slot (26) for cutter above the slot (26) for the cutter.

6. Tool holder according to claim 1, characterized in that the plug-in nozzle (21) in the area of its front side facing in the direction (v) the filing tool includes at least one pressure surface (21.2)set at an angle less than 90°, preferably less than 80°, to the Central longitudinal axis of the plug nozzle (21).

7. Residenzhotel to claim 1, characterized in that the slot (26) for cutter against the direction of feed enters the notch (24), open radially outward and across the direction (v) the filing of the instrument.

8. Tool holder according to claim 1, characterized in that the plug-in nozzle (21) contains on the area of its rear side (23)opposite to the feed direction of the tool, additional reference section with one or more support surfaces (21.5).

9. The tool holder of claim 8, characterized in that the supporting surface (21.5) arranged at an angle to each other.

10. The tool holder of claim 8 or 9, characterized in that the supporting surface (21.5) are essentially in the direction of the longitudinal axis of the plug nozzle (21).

11. The clamping part with plug-in socket (15) and with the control nozzle (12), forming a support (18), characterized in that the supporting nozzle (12) in the direction (v) the filing installed before you plug socket (15) and fixes the support (18) before the plug socket (15).

12. The clamping part according to claim 11, characterized in that opposite direction (v) the filing of the tool behind the plug socket (15) installed cap (17)fixing at site plug socket (15), at least one holder (16).

13. The clamping part according to claim 11 or 12, characterized in that the bearing (18) forms a support surface (18.1), component with the longitudinal axis of the plug socket (15) or on the additional bearing surface (16.1) controvery (16) obtuse angle.

14. The clamping part according to claim 11 or 12, characterized in that the support (18) has two support surfaces (18.1), and/or the holder (16) - two additional bearing surface (16.1), located respectively at an angle to each other.

15. The clamping part according to claim 11, characterized in that the supporting nozzle (12) before the plug holder (15) in the direction (v) the filing of the tool has a threaded socket (13), passing in the plot plug socket (15).

16. Tool system with the tool holder (20) according to one of claims 1 to 10 and the clamping part (20) according to one of § § 11 and 15.



 

Same patents:

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Tool holder // 2334105

FIELD: mining.

SUBSTANCE: tool holder with toolhead has a cutter head in the retainer catch, the said cutler head being designed to receive a cutler capable of being inserted and replaced. The cutter head is mode in the form of a socket and is furnished with a hole for inserting the cutter. The toolhead has fixation side with retainer catch and outer side oriented opposite to the fixation side, so that during tool operation centrifugal forces are directed from the fixation side to the outer one. The retainer catch has an aperture passing through inner wall of the cutter head and forming dimensional connection to the environment, the said aperture opening the cutter head towards the outer side.

EFFECT: prevention of cutter jamming due to rock mass litter getting into the head.

8 cl, 6 dwg

FIELD: mining.

SUBSTANCE: system of tooth holder consists of base part and tool holder. The tool holder has an inserted extension which is inserted into a receiving socket of the base part and a contact surface, with which the tool holder rests on support surface of the base part. A step adjoins to support surface, while contact surface turns into locking surface of the tool holder which faces the step of the base part. Also additional space is created between the step and locking surface.

EFFECT: increased operation life of tool holder system.

8 cl, 6 dwg

FIELD: mining.

SUBSTANCE: suggested invention is related to the field of mining and construction, in particular to cutters with round tails. Cutter with round tail comprises tail, at the same time tail is retained with the possibility of rotation in clamping cartridge. Clamping cartridge is equipped with one or several retaining elements that protrude inside, which enter circular groove arranged in cutter tail, so that clamping cartridge is retained on round tail of cutter without possibility of shift in axial direction. One or several retaining elements are installed in medium transverse plane of clamping cartridge or have identical axial distance from it. Clamping cartridge is arranged with the possibility of installation in two axial positions turned by 180° around its longitudinal axis on round tail of cutter and fixation on it selectively in one of both identical positions. Retaining elements are arranged between two oriented forming edges across longitudinal axis of clamping cartridge and are stamped and/or impressed inside. Besides forming edges pass along part of clamping cartridge circumference and have distance from each other, which is equal or less than width of circumferential groove in round tail of cutter.

EFFECT: simplified installation of clamping cartridge on round tail of cutter.

11 cl, 4 dwg

FIELD: mining.

SUBSTANCE: equipped with round shank end cutter is held by means of slit clamping sleeve in aperture of cutter holder and is designed to rotate. Also the clamping sleeve is equipped with holding elements stamped and/or pressed inside; the elements are distributed along perimetre of the clamping sleeve and enter into a circular slot made in the round shank end. Two stamped edges directed across lengthwise axis of the clamping sleeve isolate holding elements. Also stamped edges run along part of perimetre of the clamping sleeve and are arranged at distance one from another corresponding to width of the circular slot in the round shank end of the cutter. Notably, the holding elements form coaxial concave centring section facing the convex bottom of the circular slot.

EFFECT: increased operation life of cutter due to increased reliability of fastening.

15 cl, 4 dwg

FIELD: mining.

SUBSTANCE: attachment point of mine cutting tool consists of holder, secured on executive device, of cutter with cone cutting part and rotating shank end secured in holder. The attachment point of the mine cutting tool is equipped with a swinging mechanism kinematically coupled with the shank end of a cutting insertion and made in form of a mechanical trigger facilitating a swivel of the cutter around axis. Also the cutting insertion swinging mechanism corresponds to three bushings inserted one into another and equipped with radial lugs axially tapered on ends.

EFFECT: increased resource of mine cutting tool and reduced power consumption for cutting.

6 dwg

FIELD: mining.

SUBSTANCE: adaptive unit for fixation of rock-cutting tool includes cutter holder with hole for cutter tail and elastic element coupled with cutter tail. Elastic element is arranged between cutter tail and hole for tail in cutter holder in internal and external races. At the same time elastic element is non-detachably enclosed between external and internal races so that external surface of external race has the shape of cutter holder hole surface, and internal surface of internal race has the shape of external surface of cutter tail.

EFFECT: pliancy of cutting part along and perpendicularly to axis of cutter, increased strength of hard-alloy reinforcement in case of impact loads, increased efficiency of rock-breaking mining machines.

5 dwg

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