CN217912911U - Machine tool clamping jaw device - Google Patents

Abstract

The utility model discloses a lathe jack catch device belongs to digit control machine tool processing technology field. The machine tool clamping jaw device comprises a chuck and at least two groups of clamping jaws installed on the chuck, wherein replaceable jaw heads are arranged at the inner side ends of the clamping jaws, a fixing assembly is arranged between the clamping jaws and the jaw heads and used for connecting the clamping jaws with the jaw heads, the fixing assembly comprises a blind groove formed in the inner side end of the clamping jaws, a threaded hole is formed in the bottom end of the blind groove, a clamping block is arranged at the outer side end of the clamping jaw, a through countersunk hole is formed in the outer end portion of the clamping block, a bolt is arranged in the countersunk hole and suitable for being installed in the blind groove, and the bolt is suitable for being screwed into the threaded hole after the clamping block is installed in the blind groove. The utility model discloses can quick replacement claw head in order to process not unidimensional work piece, make things convenient for the processing of work piece, especially to the processing of steel pipe class tubular product.

Description

Machine tool clamping jaw device

Technical Field

The application relates to the technical field of numerical control machine tool machining, in particular to a machine tool clamping jaw device.

Background

A chuck is a part used to hold and retain a workpiece, or a machine tool accessory that clamps and positions a workpiece. The jack catch in the chuck is 360 degrees evenly distributed mostly, make three jack catch be close to or withdraw from completion work to the center simultaneously, the result retrieval discovery, jack catch among the prior art is the integral type mostly, when processing different specification work pieces, it wastes time and energy to change and dismantle whole jack catch device, cause the dislocation easily and lead to the central skew, in centre gripping tubular product, especially when the steel pipe, its integral type jack catch clamping face circular arc is fixed, accommodation is narrow, so it solves above-mentioned problem to be necessary to provide a lathe jack catch device.

Disclosure of Invention

Based on the above-mentioned problem that exists among the prior art, the utility model aims to solve the technical problem that: the utility model provides a lathe jack catch device, it can quick replacement claw head in order to process the work piece of different sizes, has made things convenient for the processing of work piece, especially the processing to steel pipe class tubular product.

The technical scheme adopted by the application for solving the technical problem is as follows: the utility model provides a lathe jack catch device, includes the chuck and installs at least two sets of jack catchs on the chuck, the medial extremity of jack catch is provided with removable claw head, be provided with fixed subassembly between jack catch and the claw head, fixed subassembly is used for connecting the jack catch with the claw head, fixed subassembly is including setting up the blind groove at the jack catch medial extremity, the bottom in blind groove is provided with the screw hole, the lateral extremity of jack catch is provided with the fixture block, the outer tip of fixture block is provided with the counter sink that runs through, be provided with the bolt in the counter sink, the fixture block is suitable for packing into the blind groove, the bolt is suitable for the fixture block is packed into twist behind the blind groove the screw hole.

Further, a structural form for limiting the direction of the claw head is provided, and the width of the clamping block is equal to that of the blind groove.

Further, another structural form for limiting the direction of the claw head is provided, and guide pieces are arranged on two sides of the claw and used for limiting the installation direction of the claw head; the two guide sheets are suitable for acting to abut against the two side surfaces of the claw head when the clamping block is arranged in the blind groove.

Furthermore, a moving assembly corresponding to the guide pieces is arranged inside the clamping jaw and used for controlling the positions of the corresponding guide pieces, the moving assembly comprises a sliding block, movable grooves corresponding to the sliding block are formed in the clamping jaw, the sliding block is arranged in the corresponding movable grooves, and the sliding block is connected with the corresponding guide pieces.

Further, the moving assembly comprises a rubber head arranged at the inner end of the sliding block, and the rubber head is suitable for being in face contact with the outer end face of the claw head.

Further, a spring is arranged between the sliding block and the clamping jaw.

Further, the claw head is consistent with the width of the claw.

Further, the guide plate is made of rigid materials.

Further, in order to conveniently clamp the workpiece to be clamped, the inner end face of the claw head is a clamping face matched with the workpiece to be clamped.

Further, in order to clamp the pipe conveniently, the clamping surface is a circular arc surface.

After the technical scheme is adopted, through putting into the blind groove in the jack catch with the fixture block on the jack catch, recycle the bolt from the counter bore put into with the screw hole meshing locking of blind groove bottom, thereby it is fixed with the convenient being connected of jack catch to accomplish the jack catch, when the not unidimensional work piece of needs centre gripping, just also the jack catch that can the quick replacement corresponds or process the clamping face of jack catch, satisfy the processing demand, through the disconnect-type installation that sets up this kind of jack catch and jack catch, thereby make can be according to the convenient suitable jack catch of the change of the work piece type of difference.

Drawings

The present application is further described below with reference to the accompanying drawings and examples.

In the figure:

fig. 1 is an overall schematic view of a machine tool jaw device according to the present invention;

FIG. 2 is a schematic cross-sectional view of area A of FIG. 1;

FIG. 3 is an exploded view of region B of FIG. 2;

wherein, in the figures, the respective reference numerals:

1. a chuck; 2. a jaw; 3. a claw head; 4. a guide piece; 5. a movable groove; 6. a spring; 7. a slider; 8. a rubber head; 9. a bolt; 10. and (4) screws.

Detailed Description

The present application will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and only illustrates the basic structure of the present application in a schematic manner, and therefore it only shows the constitution related to the present application.

Example one

As shown in fig. 1-2, a machine tool jaw device comprises a chuck 1 and three groups of jaws 2 installed on the chuck 1, wherein the inner side end of each jaw 2 is provided with a replaceable jaw head 3, a fixing component is arranged between each jaw 2 and each jaw head 3 and used for connecting each jaw 2 with each jaw head 3, each fixing component comprises a blind groove arranged at the inner side end of each jaw 2, the bottom end of each blind groove is provided with a threaded hole, the outer side end of each jaw 2 is provided with a clamping block, the outer end of each clamping block is provided with a through countersunk hole, each countersunk hole is internally provided with a bolt 9, each clamping block is suitable for being installed into the blind groove, and each bolt 9 is suitable for being screwed into the threaded hole after the clamping block is installed into the blind groove.

In the present embodiment, the width of the latch and the blind groove are equal.

In order to clamp the workpiece to be clamped well, the inner end surface of the claw head 3 is adapted to the clamping surface of the workpiece to be clamped, as shown in fig. 1.

In order to clamp a pipe material, such as a steel pipe, well, the clamping surfaces are circular arc surfaces, as shown in fig. 1.

The fixture block is placed into the blind groove, the fixture block plays a directional role in the fixing position of the claw head 3 through the cooperation of the blind groove and the rotary bolt 9, the fixture block penetrates through the countersunk hole and the threaded hole in the bottom end of the blind groove to be in threaded connection with the claw head 3, the claw 2 and the claw head 3 are fixedly connected, the requirement for machining workpieces with different outer diameters is met through replacing the claw head 3, the claw head with the corresponding specification only needs to be detached every time when the fixture is replaced, the machining requirement is met, the flexibility and the convenience are achieved, and meanwhile, the clamping face of the claw head can be reused after being remade through secondary machining.

Example two

As shown in fig. 3, the structure of the present embodiment is substantially the same as that of the first embodiment, except that: in order to reduce the processing difficulty, the widths of the fixture block and the blind groove can be approximately equal or unequal, so that a gap exists between the fixture block and the blind groove, and the gap can cause the angular direction of the claw head 3 fixed with the fixture block to deviate when the fixture block is locked by using the bolt 9, which is not beneficial to clamping a workpiece, because in the embodiment, the guide sheets 4 are arranged on two sides of the jaw 2, and the guide sheets 4 are used for limiting the installation direction of the claw head 3; the two guide sheets 4 are suitable for being acted against two side surfaces of the claw head 2 when the clamping block is arranged in the blind groove.

In this embodiment, the guiding plate 4 may be directly integrated with the sliding block or fastened by a screw 10, which is not limited herein.

As shown in fig. 3, a moving assembly corresponding to the guide piece 4 is arranged inside the jaw 2, the moving assembly is used for controlling the position of the corresponding guide piece 4, the moving assembly comprises a sliding block 7, a movable groove 5 corresponding to the sliding block 7 is arranged in the jaw 2, the sliding block 7 is arranged in the corresponding movable groove 5, and the sliding block 7 is connected with the corresponding guide piece 4.

As shown in fig. 3, the moving assembly further includes a rubber head 8 provided at an inner end of the slider 7, the rubber head 8 being adapted to be in surface contact with an outer end of the claw head 3.

As shown in fig. 3, a spring 6 is provided between the rubber head 8 and the jaw 2.

The jaw head 3 is the same width as the jaw 2.

The guide plate 4 may be made of a rigid material.

When the claw head 3 needs to be installed, the guide pieces 4 on the two sides of the claw 2 are shifted to the position far away from the center of the chuck 1, so that the claw head 3 is convenient to install, the guide pieces 4 drive the sliding block 7 to extrude the spring 6 to contract, and the clamping block on the claw head 3 is placed in the blind groove of the claw 2;

the guide pieces 4 are loosened, the guide pieces 4 move towards the center of the chuck 1 together with the sliding block 7 under the elastic force of the spring 6, so that the inner sides of the guide pieces 4 on the two sides are in contact with the two side surfaces of the claw head 3, the angle direction of the installation of the claw head 3 is adjusted, the claw head 3 is fixedly connected with the claw 2 through the bolt 9, and the claw head 3 is accurately installed.

In addition, the rubber head 8 is installed at one end of the slider 7, and after the guide piece 4 adjusts the angle direction of installing the claw head 3, the slider 7 drives the rubber head 8 to abut against the contact surface between the claw head 3 and the claw 2, so that the claw head 3 is also stressed perpendicularly to the bolt 9 when in use, and the stability of the claw head 3 is improved.

In light of the foregoing description of the preferred embodiment in accordance with the present application, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the scope of the invention. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. The utility model provides a lathe jack catch device, includes chuck (1) and installs at least two sets of jack catchs (2) on chuck (1), its characterized in that: the clamping jaw is characterized in that a replaceable jaw head (3) is arranged at the inner side end of the clamping jaw (2), a fixing assembly is arranged between the clamping jaw (2) and the jaw head (3) and used for connecting the clamping jaw (2) and the jaw head (3), the fixing assembly comprises a blind groove arranged at the inner side end of the clamping jaw (2), a threaded hole is formed in the bottom end of the blind groove, a clamping block is arranged at the outer side end of the clamping jaw (2), a through countersunk hole is formed in the outer end of the clamping block, a bolt (9) is arranged in the countersunk hole and suitable for being installed in the blind groove, and the bolt (9) is suitable for being screwed into the threaded hole after the clamping block is installed in the blind groove.

2. A machine tool jaw apparatus according to claim 1,

the width of the fixture block is equal to that of the blind groove.

3. A machine tool jaw assembly according to claim 1, wherein: guide pieces (4) are arranged on two sides of the clamping jaw (2), and the guide pieces (4) are used for limiting the installation direction of the clamping jaw head (3); the two guide sheets (4) are suitable for being acted to abut against two side surfaces of the claw head (3) when the clamping block is installed in the blind groove.

4. A machine tool jaw assembly according to claim 3, wherein: the inside of jack catch (2) is provided with the removal subassembly that corresponds guide vane (4), it is used for controlling the position of corresponding guide vane (4) to remove the subassembly, it includes slider (7) to remove the subassembly, be provided with in jack catch (2) with movable groove (5) that slider (7) correspond, slider (7) set up and are being corresponded in movable groove (5), slider (7) are connected with corresponding guide vane (4).

5. A machine tool jaw apparatus according to claim 4, wherein: the moving assembly comprises a rubber head (8) arranged at the inner end of the sliding block (7), and the rubber head (8) is suitable for being in contact with the outer end face of the claw head (3).

6. A machine tool jaw apparatus according to claim 4, wherein:

a spring (6) is arranged between the sliding block (7) and the clamping jaw (2).

7. A machine tool jaw assembly according to claim 3, wherein: the width of the claw head (3) is consistent with that of the claw (2).

8. A machine tool jaw assembly according to claim 3, wherein: the guide sheet (4) is made of rigid materials.

9. A machine tool jaw assembly according to claim 1, wherein: the inner end surface of the claw head (3) is a clamping surface matched with a workpiece to be clamped.

10. A machine tool jaw assembly according to claim 9, wherein: the clamping surface is a circular arc surface.

Images