Chuck capable of clamping special-shaped part

Abstract

The utility model provides a chuck capable of clamping a special-shaped part, which belongs to the technical field of chucks and comprises a rack, a rotary driving mechanism arranged on the rack and used for driving a machined part to rotate during use, a chuck main body and a threaded transmission disc rotatably arranged in the chuck main body, the power source is fixedly arranged on the chuck body and used for driving the threaded transmission disc to rotate, the adjustable clamping jaws are meshed with the threaded transmission disc and driven by the threaded transmission disc, and the clamping distance to the center of each adjustable clamping jaw can be adjusted. Each adjustable clamping jaw comprises a rear clamping jaw body, a front clamping jaw body and an adjusting screw rod used for connecting the rear clamping jaw body and the front clamping jaw body into a whole through threads, and the rear end face of each rear clamping jaw body is provided with threads meshed with the threads on the front end face of the corresponding threaded transmission disc to achieve transmission. The position of the front clamping jaw of the same adjustable clamping jaw relative to the position of the rear clamping jaw can be adjusted by screwing the adjusting screw rod, and the front clamping jaw is locked after adjustment. According to the utility model, the synchronous clamping of the special-shaped processed workpiece can be conveniently realized through the structural improvement.

Description

TECHNICAL FIELD

[0001] The utility model relates to chuck technical field, concretely relates to a chuck of clamping special-shaped part. BACKGROUND

[0002] The chuck is the device for clamping the workpiece and rotating the workpiece on the machining production line, and the common chuck is usually provided with three synchronous claws or four synchronous claws, such as the three-claw chuck disclosed in the Chinese patent document with the authorization announcement number CN208772497U and the four-claw chuck driven by the gear disclosed in the Chinese patent document with the authorization announcement number CN215846416U, and the common feature is that the claws cannot be adjusted once assembled, so that the chuck can only effectively clamp the round or square pipe and rod, and the existing chuck cannot effectively clamp the special-shaped material. Therefore, it is necessary to further improve the existing chuck to effectively clamp the special-shaped material on the machining production line. SUMMARY

[0003] The utility model aims at solving the problems in the prior art, and provides a chuck capable of clamping special-shaped parts with improved structure to meet the production needs.

[0004] The technical scheme of the utility model is as follows: the chuck capable of clamping special-shaped parts comprises a rack as a mounting base, a rotating drive mechanism arranged on the rack and used for driving the workpiece to rotate during use, and the structure features are as follows: the chuck further comprises a chuck body, a threaded transmission disc rotatably arranged in the chuck body, a power source fixedly arranged on the chuck body and used for driving the threaded transmission disc to rotate, and four to six adjustable clamping claws with adjustable center clamping distance, which are in mesh with the threaded transmission disc and driven by the threaded transmission disc.

[0005] Further, the threaded transmission disc is a disc-shaped structural member with threads on the front end face, the adjustable clamping claw comprises a rear clamping claw, a front clamping claw, and an adjusting screw rod for connecting the rear clamping claw and the front clamping claw into a whole through threads, and the rear end face of the rear clamping claw is provided with threads in mesh with the threads on the front end face of the threaded transmission disc to realize transmission; by screwing the adjusting screw rod, the position of the front clamping claw of the same adjustable clamping claw relative to the rear clamping claw can be adjusted and locked after adjustment.

[0006] Further, the chuck body comprises a rear cover, an inner ring and a front cover fixedly connected with each other, the front cover is provided with 4-6 mounting grooves, each mounting groove comprises a first mounting groove and a second mounting groove oppositely and in communication, and the rear clamping jaw and the front clamping jaw of each adjustable clamping jaw are movably arranged in the first mounting groove and the second mounting groove of the corresponding mounting groove respectively.

[0007] Further, the threaded transmission disc is rotatably arranged in the front cover of the chuck body, and the power source is fixedly arranged on the front end face of the rear cover and in transmission connection with the threaded transmission disc.

[0008] Further, the power source can be an electric motor, a pneumatic motor or a hydraulic motor.

[0009] Further, the chuck capable of clamping the special-shaped workpiece further comprises a dust cover fixedly arranged on the outer circumferential surface between the rear cover and the front cover of the chuck body, and the inner ring, the threaded transmission disc and the power source of the chuck body are arranged in the dust cover.

[0010] Further, the rotating driving mechanism comprises a bearing rotatably arranged on the frame, a large gear fixedly connected with the bearing, a speed reducer in transmission connection with the large gear, and a rotating motor in transmission connection with the speed reducer, and the rear cover of the chuck body is fixedly connected with the bearing.

[0011] The utility model has the positive effect: the utility model discloses through including threaded transmission disc synchronous drive each adjustable clamping jaw movement and each adjustable clamping jaw's front clamping jaw relative position adjustable to rear clamping jaw, thereby can conveniently realize to the synchronous clamping of special-shaped workpiece of being processed, solves the technical problem of similar chuck in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structural schematic diagram of the utility model;

[0013] Figure 2 It is Figure 1 the B-B section view of the utility model;

[0014] Figure 3 It is the three-dimensional structure schematic diagram when the utility model clamps regular workpiece;

[0015] Figure 4 It is one kind of three-dimensional structure schematic diagram when the utility model clamps irregular workpiece.

[0016] The reference signs in the above drawings are as follows:

[0017] Frame 1, rotary drive mechanism 2, bearing 21, gear 22, speed reducer 23, rotary motor 24, chuck body 3, rear cover 31, inner ring 32, front cover 33, first mounting slot 33-1, second mounting slot 33-2, threaded drive plate 4, adjustable clamping jaw 6, rear clamping jaw 61, front clamping jaw 62, adjusting screw 63, dust cover 7. DETAILED DESCRIPTION

[0018] The utility model will be explained in further detail below in combination with the drawings and specific embodiments.

[0019] (Example 1)

[0020] In the description of the orientation of the embodiment, the direction facing is the front in the description, and the direction facing away is the back in the description. Figure 1 Figure 1 The up-down and left-right directions of the embodiment are still the up-down and left-right directions in the description. Figure 1

[0021] As shown in Figures 1 to 3 , the chuck capable of clamping special-shaped parts of the embodiment mainly comprises a frame 1, a rotary drive mechanism 2, a chuck body 3, a threaded drive plate 4, a power source 5, an adjustable clamping jaw 6, and a dust cover 7.

[0022] The frame 1 serves as the mounting base of other components of the chuck capable of clamping special-shaped parts of the embodiment.

[0023] The rotary drive mechanism 2 comprises a bearing 21 rotatably arranged on the frame 1, a gear 22 fixedly connected with the bearing 21, a speed reducer 23 in transmission connection with the gear 22, and a rotary motor 24 in transmission connection with the speed reducer 23. The rotary drive mechanism 2 is used to drive the workpiece to rotate during use, and its structure is the same as that of the prior art, which will not be described herein.

[0024] The chuck body 3 mainly comprises a rear cover 31, an inner ring 32, and a front cover 33 fixedly connected with each other. The rear cover 31 is fixedly connected with the bearing 21, thereby achieving the transmission connection between the rotary drive mechanism 2 and the chuck body 3. Different from the prior art, the front cover 33 is provided with 4-6 mounting slots, each of which comprises a first mounting slot 33-1 and a second mounting slot 33-2 arranged oppositely and in communication.

[0025] The threaded drive plate 4 is a disc-shaped structural member with threads on the front end face. The threaded drive plate 4 is rotatably arranged in the front cover 33 of the chuck body 3.

[0026] The power source 5 is fixedly arranged on the front end face of the rear cover 31 and in transmission connection with the threaded drive plate 4, and is used to drive the threaded drive plate 4 to rotate. The power source 5 can be an electric motor, a pneumatic motor, or a hydraulic motor, and an electric motor is preferably adopted in the embodiment. ​​

[0027] The adjustable clamping jaw 6 is arranged in the mounting groove of the chuck body 3, and is different from the prior art in that each adjustable clamping jaw 6 is formed by a rear clamping jaw 61, a front clamping jaw 62 and an adjusting screw 63 for connecting the rear clamping jaw 61 and the front clamping jaw 62 into an integrated body by screwing, the rear clamping jaw 61 is movably arranged in a first mounting groove 33-1 of one mounting groove of the front cover 33, the front clamping jaw 62 is movably arranged in a second mounting groove 33-2 of one mounting groove of the front cover 33, and a thread is arranged on the rear end face of the rear clamping jaw 61 and is engaged with the front end face thread of the screw transmission disc 4 to realize transmission.

[0028] During operation, when clamping a workpiece with a regular structure such as a circle or a square, the rear clamping jaw 61 and the front clamping jaw 62 of each adjustable clamping jaw 6 are aligned, the screw transmission disc 4 is driven by the power source 5 to rotate in a forward direction or a reverse direction to synchronously drive each adjustable clamping jaw 6 to move towards or away from the center to synchronously clamp or loosen the workpiece.

[0029] Referring to Figure 4 , if the left-right direction size of the workpiece is smaller than the up-down direction size, the adjusting screws 63 of the two adjustable clamping jaws 6 in the left-right direction are twisted to adjust the positions of the front clamping jaws 62 of the two adjustable clamping jaws 6 relative to the rear clamping jaws 61 until the positions are suitable for the left-right direction size of the workpiece, and then the front clamping jaws 62 and the rear clamping jaws 61 after adjustment are locked by the adjusting screws 63, so that the workpiece with the size can be synchronously clamped and centered. Obviously, since the front clamping jaws 62 of each adjustable clamping jaw 6 are respectively adjustable relative to the rear clamping jaws 61, for different sizes of special-shaped workpieces, only the positions of the front clamping jaws 62 of the adjustable clamping jaws 6 in the corresponding direction relative to the rear clamping jaws 61 need to be adjusted, so that the synchronous clamping of the special-shaped workpiece can be conveniently realized, and the technical problems of the same chuck in the prior art are solved.

[0030] The dust cover 7 is arranged as an optional mode, the dust cover 7 is fixedly arranged on the outer circumferential surface between the rear cover 31 and the front cover 33 of the chuck body 3, and the inner ring 32 of the chuck body 3, the screw transmission disc 4 and the power source 5 are located in the dust cover 7.

[0031] The above embodiments are descriptions of the specific implementation modes of the utility model, rather than limitations of the utility model, and those skilled in the related technical field can make various transformations and changes without departing from the spirit and scope of the utility model to obtain corresponding equivalent technical solutions, so all equivalent technical solutions should be included in the patent protection scope of the utility model.

Claims

1. A chuck for clamping a special-shaped workpiece, comprising a frame as a mounting base, and a rotary drive mechanism mounted on the frame for driving the workpiece to rotate during use, characterized in that: The chuck body, a threaded transmission disc rotatably arranged in the chuck body, a power source fixedly arranged on the chuck body for driving the threaded transmission disc to rotate, and 4-6 adjustable clamping jaws with adjustable center clamping distance.

2. The profiled part grippable chuck as claimed in claim 1, wherein: The threaded transmission disc is a disc-shaped structural member with threads on the front end surface, the adjustable clamping jaw comprises a rear clamping jaw, a front clamping jaw, and an adjusting screw rod for connecting the rear clamping jaw and the front clamping jaw into an integrated body through threads, the rear end surface of the rear clamping jaw is provided with threads for engaging with the threads on the front end surface of the threaded transmission disc to realize transmission; the position of the front clamping jaw of the same adjustable clamping jaw relative to the rear clamping jaw can be adjusted and locked after adjustment by screwing the adjusting screw rod.

3. The profiled part clippable chuck as claimed in claim 2, wherein: The chuck body comprises a rear cover, an inner ring, and a front cover fixedly connected with each other, the front cover is provided with 4-6 mounting grooves, each mounting groove comprises a first mounting groove and a second mounting groove arranged oppositely and in communication; the rear clamping jaw and the front clamping jaw of each adjustable clamping jaw are movably arranged in the first mounting groove and the second mounting groove of the corresponding mounting groove, respectively.

4. The profiled part clippable chuck as claimed in claim 3, wherein: The threaded transmission disc is rotatably arranged in the front cover of the chuck body; the power source is fixedly arranged on the front end surface of the rear cover and in transmission connection with the threaded transmission disc.

5. The profiled part clippable chuck as claimed in claim 4, wherein: The power source can be an electric motor, a pneumatic motor, or a hydraulic motor.

6. The profiled part clippable chuck as claimed in claim 3, wherein: A dust cover is further arranged, which is fixedly arranged on the outer circumferential surface between the rear cover and the front cover of the chuck body, and the inner ring of the chuck body, the threaded transmission disc, and the power source are arranged inside the dust cover.

7. A chuck as claimed in any one of claims 3 to 6, wherein: The rotary drive mechanism comprises a bearing rotatably arranged on the frame, a large gear fixedly connected with the bearing, a speed reducer in transmission connection with the large gear, and a rotary motor in transmission connection with the speed reducer; the rear cover of the chuck body is fixedly connected with the bearing.

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