CN104014829A - Chuck - Google Patents

Abstract

The invention discloses a chuck. The chuck comprises a chuck body and clamping claws. The clamping claws comprise a positioning clamping claw and a movable clamping claw. The positioning clamping claw and the movable clamping claw are respectively composed of a clamping claw connecting base and a clamping claw grasping part, wherein the clamping claw grasping part is provided with a swallow-tailed groove, a clamping-mark-preventing cushion block is arranged in the swallow-tailed groove, one end face of the clamping-mark-preventing cushion block is matched with the clamping claw grasping part, and the other end face of the clamping-mark-preventing cushion block is matched with a grasped face of a machined part. The positioning clamping claw and an adjusting bolt are fixed through a compression bolt, the bottom of the movable clamping claw is provided a positioning key, the chuck body is provided with a movable groove matched with the movable clamping claw, and the chuck body is provided with two ejector rods which can eject the machined part. The chuck is simple in structure, convenient to use, capable of effectively preventing the machined part from loosening and wide in application range, and the clamping marks are prevented form being formed on the machined part.

Description

a chuck

technical field

The invention relates to the field of accessories for machining, in particular to a chuck. the

Background technique

The chuck is a mechanical device used to clamp the workpiece on the machine tool. The workpiece is clamped and positioned by the claws distributed on the chuck body. However, there are many problems in the current chuck, such as the workpiece cannot be clamped quickly and well during the operation process, the workpiece is not clamped firmly, and the workpiece is loose and slippery. In addition, when processing shaft parts or parts with curved surfaces, Since the clamping parts of the claws of the existing chucks are all planar structures, after the above-mentioned parts are processed, the clamping parts are prone to pinching marks, thereby affecting the precision of the parts. the

Contents of the invention

The object of the present invention is to provide a chuck that can quickly and well clamp the parts and effectively prevent the parts from slipping. Problems affecting part accuracy. the

The technical scheme that the present invention adopts is as follows:

A chuck includes a chuck body and jaws, the jaws include a positioning jaw and a movable jaw, both of the positioning jaws and the movable jaws are composed of a jaw connecting seat and a jaw clamping part, the The clamping part of the jaw is provided with a dovetail-shaped groove, and the dovetail-shaped groove is provided with an anti-pinch pad. The clamped surface of the processed part is suitable, the positioning jaws are fixed to each other by the compression bolt and the adjustment bolt, the positioning key is provided at the bottom of the movable jaw, and the chuck body is equipped with a Adaptable movable slots, the chuck body is provided with two ejector rods that can press against the workpiece to be processed. the

The end face of the anti-pinch pad that fits the clamped surface of the processed part is an arc-shaped structure. the

The anti-pinching cushion block is connected with the clamping part of the jaw through a screw thread, which is convenient for disassembly. the

The angle formed by the dovetail-shaped groove is 150 degrees. the

The positioning keys include vertical positioning keys and horizontal positioning keys. the

The center of the chuck body is provided with a circular through hole. the

The ejector rod is installed on the chuck body through threaded connection, and the ejector rod is installed on the chuck body through threaded connection, which facilitates the installation and disassembly of the ejector rod. the

Compared with prior art, the beneficial effects of the present invention are as follows:

The present invention designs the positioning jaws and the movable jaws, the positioning jaws are mutually fixed by pressing bolts and adjusting bolts, the bottom of the movable jaws is provided with a positioning key, and the chuck body is provided with movable grooves matching the movable jaws , It can be used to clamp the parts conveniently and quickly. There is a dovetail-shaped groove in the clamping part of the jaw. The dovetail-shaped groove is equipped with an anti-pinching pad. For the processing of various shaft parts, it is not necessary There will be pinch marks to ensure the accuracy of the processed parts. At the same time, the chuck body is equipped with a push rod that can tighten the processed parts, which can effectively prevent the processed parts from loosening and slipping, and increase the stability of the processed parts. Sex, improve the pass rate of processing. The invention has the advantages of simple structure, convenient use and wide application range. the

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a rear view of the movable claw of the present invention. the

Detailed ways

The present invention will be further described below in conjunction with the embodiments and the accompanying drawings. the

Referring to accompanying drawings 1 and 2, a chuck includes a chuck body 1 and jaws, the jaws include a positioning jaw 2 and a movable jaw 3, and both the positioning jaw 2 and the movable jaw 3 It is composed of the claw connection seat 4 and the claw clamping part 5. The claw clamping part 5 is provided with a dovetail-shaped groove 6. The angle formed by the dovetail-shaped groove 6 is 150 degrees. The dovetail-shaped concave The groove 6 is provided with an anti-pinch pad 7, one end face of the anti-pinch pad 7 is adapted to the clamping part 5 of the claw, and the other end face is adapted to the clamped surface of the processed part, and the anti-pinch pad 7. The end face adapted to the clamped surface of the processed part is an arc-shaped structure. The anti-pinch pad 7 is threadedly connected to the clamping part 5 of the claw, which is easy to disassemble. The positioning claw 2 The pressing bolt 201 and the adjusting bolt 202 are fixed to each other. The bottom of the movable jaw 3 is provided with a longitudinal positioning key 301 and a lateral positioning key 302. Movable groove 8, described chuck body 1 is provided with two ejector rods 9 that can push against the workpiece to be processed, and ejector rod 9 is installed on the chuck body 1 by screw connection, is convenient to the installation and dismounting of ejector rod, so The center of the chuck body 1 is provided with a circular through hole 10 . The chuck of the present invention can clamp the parts conveniently and quickly by designing the positioning jaws 2 and the movable jaws 3. The jaw clamping part 5 is provided with a dovetail-shaped groove 6, and the dovetail-shaped groove 6 There is an anti-clamp pad 7 on the top, which will not produce pinch marks for the processing of various shaft parts, which ensures the accuracy of the processed parts. The rod 9 can effectively prevent loosening and slipping of the processed parts, increase the stability of the processed parts, and improve the pass rate of processing. The structure is simple, easy to use, and has a wide range of applications. the

Claims (7)

1. A chuck, comprising a chuck body and jaws, characterized in that: the jaws include a positioning jaw and a movable jaw, and both the positioning jaw and the movable jaw are formed by a jaw connecting seat and a jaw The clamping part is composed of a dovetail-shaped groove on the clamping part of the jaw, and an anti-pinch pad is provided on the dovetail-shaped groove, and one end surface of the anti-pinch pad is matched with the clamping part of the jaw , the other end face is adapted to the clamped surface of the processed part, the positioning jaws are fixed to each other by pressing bolts and adjusting bolts, the bottom of the movable jaws is provided with a positioning key, and the chuck body is provided with There are movable grooves matched with the movable jaws, and the chuck body is provided with two ejector rods which can press against the workpiece to be processed. 2. The chuck according to claim 1, characterized in that: the end surface of the anti-pinch pad that fits the clamped surface of the workpiece is an arc-shaped structure. 3. The chuck according to claim 1, characterized in that: the anti-pinch pad is connected to the clamping part of the jaw through a thread. 4. The chuck according to claim 1, wherein the angle formed by the dovetail-shaped groove is 150 degrees. 5. The chuck according to claim 1, wherein the positioning keys include longitudinal positioning keys and horizontal positioning keys. 6. The chuck according to claim 1, characterized in that: the center of the chuck body is provided with a circular through hole. 7. The chuck according to claim 1, characterized in that: the ejector rod is mounted on the chuck body through screw connection.