Chuck wrench

Abstract

The invention discloses a chuck wrench and relates to the field of machinery. The chuck wrench comprises a handle which is connected with a wrench body. The chuck wrench is characterized in that a wrench protecting sleeve is connected to the outer surface of the wrench body, a reset spring is arranged in the wrench body, and the wrench body is connected with the wrench protecting sleeve through a limiting pin. When the chuck wrench is used, a part blank is clamped by rotating the handle, the wrench protecting sleeve enables the wrench body to be automatically drawn out under the action of the reset spring, an operator cannot leave the wrench in a chuck square hole, and therefore accidents are prevented; the wrench body and the wrench protecting sleeve are connected into a whole through the limiting pin, the limiting pin restrains the wrench body from being exposed, and therefore the functions of forced extraction and safety protection are achieved.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a chuck wrench. Background technique [0002] Three (four) claw chucks are widely used in various machine tools because of their accurate positioning, simple operation, and convenient loading and unloading. However, when the operator forgets to take out a chuck wrench in time after clamping the parts or the machine tool is misoperated and causes an accident There is an invention patent with the application number CN201020103113.1, a chuck wrench block is provided with through holes, the adjacent holes are staggered at a certain angle, the wrench rod is covered with a movable sleeve, and the sleeve is provided with Long slot, and a horizontal slot, the wrench rod and the sleeve are connected together by a pin to fix the length of the wrench rod protruding from the sleeve, and also to prevent the sleeve from being lost during use. The appropriate clamping posture is to turn a chuck wrench h...

AI Technical Summary

Problems solved by technology

[0002] Three (four) claw chucks are widely used in various machine tools because of their accurate positioning, simple operation, and convenient loading and unloading. However, when the operator forgets to take out a chuck wrench in time after clamping the parts or the machine tool is misoperated and causes an accident There is an invention patent with the application number CN201020103113.1, a chuck wrench block is provided with through holes, the adjacent holes are staggered at a certain angle, the wrench rod is covered with a movable sleeve, and the sleeve is provided with Long slot, and a horizontal slot, the wrench rod and the sleeve are connected together by a pin to fix the length of the wrench rod protruding from the sleeve, and also to prevent the sleeve from being lost during use. The appropriate clamping posture is to turn a chuck wrench horizontally to clamp the workpiece, and is not limited by the surrounding machine tool parts or the shape of the workpiece. However, the safety of a chuck wrench in machining is not high. inconvenient

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