A special fixture for the machining stroke of a bull head type CNC EDM machine tool

Abstract

The invention discloses a clamp special for a machining stroke of a cow-head type numerical control electrical sparkle machine tool. The clamp is arranged on a working table and comprises a base and a plurality of clamping device, and a guide rail is arranged on the working table; a supporting device is arranged on the bottom face of the base and each clamping device comprises a concave baffle and a clamping device body; the clamping device bodies are arranged in grooves of the baffles through rotating shafts, and each clamping device body comprises an upper clamping portion and a lower clamping portion; each upper clamping portion is provided with a protruding portion which is perpendicular to the corresponding clamping device body and extends inwards; a protrusion is arranged on one face, close to each baffle, of the corresponding lower clamping portion; concave holes are formed in the corresponding positions of the baffles; and protruding blocks which can pop up are arranged on the two sides of each baffle. The supporting device comprises an electromagnet, a power source, a permanent magnet and a guide pipe; the power source is fixed to the bottom face of the base; after being powered on, the electromagnet is repellent with the permanent magnet; the electromagnet is located at one end, connected with the base (2), in the guide pipe; and the permanent magnet is inserted in the guide pipe. The clamp special for the machining stroke of the cow-head type numerical control electrical sparkle machine tool has the advantages of being easy to manufacture, low in cost, and high in clamping precision and easily carrying out clamping.

Description

technical field [0001] The invention relates to the field of machine tool processing fixtures, in particular to a special fixture for the machining stroke of a bull-head type CNC electric discharge machine tool. 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-co...

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

Images