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Manual three-jaw chuck with three-jaw micro-movement locking devices

A technology of a locking device and a three-jaw chuck, which is applied in the direction of the chuck, etc., can solve the problems of the knife being hit or the workpiece flying out of the chuck, the clamping force of the three jaws cannot be too large, and the clamping force is not too large, and it achieves a simple structure and a small volume. Small, easy-to-manufacture effects

Inactive Publication Date: 2019-04-05
SHAANXI BAOCHENG AVIATION INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When clamping thin-walled workpieces with soft three-jaws, the clamping force of the three-jaws should not be too large, causing the workpiece to stop in the three-jaws, causing the knife to hit or the workpiece to fly out of the chuck

Method used

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  • Manual three-jaw chuck with three-jaw micro-movement locking devices
  • Manual three-jaw chuck with three-jaw micro-movement locking devices
  • Manual three-jaw chuck with three-jaw micro-movement locking devices

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Embodiment Construction

[0014] In order to make the purpose, technical scheme and advantages of this application clearer, the following will be combined with the appended in the embodiment Figure 1-3 , clearly and completely describe the technical solutions in the embodiments, obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the given embodiments, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0015] Manual three-jaw chuck with three-jaw micro-movement locking device, such as figure 1 and 2 As shown, it includes a chuck main body 1, and three movable jaws 2 are evenly arranged on the circumference of the end surface of the chuck main body 1, and the inside of the chuck main body 1 is provided with driving three movable jaws 2 to approach or withdraw from the center of the chuck. The claw drive mech...

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Abstract

The invention provides a manual three-jaw chuck with three-jaw micro-movement locking devices. The manual three-jaw chuck comprises a chuck body. Three movable jaws are uniformly arranged on the uppercircumference of the chuck body. A jaw driving mechanism for driving the three movable jaws to move is arranged in the chuck body. The jaw driving mechanism comprises a butterfly bevel gear arrangedin the chuck body to drive the movable jaws to move and three bevel pinions, wherein the three bevel pinions are uniformly supported in the chuck body in the circumferential direction and engaged withthe butterfly bevel gear to drive the butterfly bevel gear to rotate. The three-jaw micro-movement locking devices are uniformly arranged on the circumference of the upper end surface of the chuck body. The three-jaw micro-movement locking devices correspond to the three bevel pinions and lock the rotation of the bevel pinions to limit the micro-movement of the three movable jaws relative to thecenter of the chuck. The manual three-jaw chuck solves the problems that the three movable jaws move outwards relative to the center of the chuck due to various factors, and the clamping force is continuously reduced, so that the workpiece clamping is not tight and the three jaws withdraw, and the problems of scrapping and flying out of the chuck caused by the untight workpiece clamping are avoided.

Description

technical field [0001] The invention belongs to the field of chuck technology, and in particular relates to a manual three-jaw chuck with a three-jaw micro-movement locking device, which is mainly used for processing workpieces requiring manual clamping and low clamping force. Background technique [0002] Three-jaw chuck is a commonly used equipment in machining. A general manual three-jaw chuck is composed of a chuck body, movable jaws and a jaw driving mechanism. When the small bevel gear is turned with a wrench through the square hole, the small bevel gear will drive the butterfly bevel gear to rotate, and at the same time, the plane thread on the back of the butterfly bevel gear will rotate, and the plane thread will drive the three claws to approach or withdraw from the center to clamp different diameter workpiece. When the unclamped workpiece is idling with the chuck, as time goes by and the speed increases, the movable jaws will slowly leave the center of the chuck...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B31/163
CPCB23B31/16004
Inventor 史厚民刘红霞李金刚
Owner SHAANXI BAOCHENG AVIATION INSTR
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