A special fixture for electric discharge machine pen mold

Abstract

The invention discloses a special pen die clamp for an electric discharge machine tool. The special pen die clamp is arranged on a workbench, comprising a base and a plurality of clamping devices; a guide rail is arranged on the workbench; the clamping device comprises a concave baffle plate and a clamping device, wherein the clamping device consisting of an upper clamping pat and a lower clamping part is arranged into a concave groove in the baffle through a rotating shaft; the upper clamping part is equipped with a protruding part which is vertical to the clamping device and inwards extends; a bulge is arranged on one surface of the lower clamping part, close to the baffle; a concave hole is formed in the corresponding position on the baffle; pop-up bumps are arranged at two sides of the baffle; a cavity in which a fixing part is embedded is formed in the base; the fixing part comprises a supporting rod which extends out from the cavity, and a chuck located at the lower end of the supporting rod; the outside diameter of the chuck is equal to the inside diameter of the cavity. The special pen die clamp for the electric discharge machine tool is simple to be manufactured, low in cost, easy to be clamped, and high in clamping precision; in addition, the clamp structure facilitates the removal of discharge chips by working liquid, and the stability of the discharge state can be ensured.

Description

technical field [0001] The invention relates to the field of machine tool processing fixtures, in particular to a special fixture for electric discharge machine tools. Background technique [0002] The core and cavity of plastic molds generally need to be processed or inspected by CNC machining centers, electric discharge machine tools, wire cutting machine tools, three-coordinate measuring instruments and other equipment during the processing process. For different types of equipment, different mold fixtures are required In order to realize the processing link between the various processing equipment. Several common mold clamping methods are: (1) Clamping the mold core and cavity by means of yardage, beading, etc.; (2) Clamping by the rapid positioning device of the reference piece; (3) Clamping by the pneumatic positioning device . [0003] Among them, the first one is the most common and cheap, but it is cumbersome and time-consuming to set up the clamping, and the prec...

AI Technical Summary

Problems solved by technology

[0003] Among them, the first one is the most common and cheap, but it is cumbersome and time-consuming to set up the clamping, and the accuracy is not high

The second method is slightly better than the first one, and the accuracy and time are in the middle of the three, but it cannot be used on machine tools such as wire cutting

The fixture of the third clamping method is expensive and has high precision, but it cannot be used on machine tools such as wire cutting

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