Improved type universal fixture for machining blade profile

Abstract

Disclosed is an improved type universal fixture for machining a blade profile. The improved type universal fixture comprises a base, a self-centering two-jaw chuck, profile blocks, profile block fixing seats, a locating seat, a replaceable locating rod and a debugging standard part which is used for locating the universal fixture on a milling machine workbench. The self-centering two-jaw chuck is installed on the base. The number of the profile block fixing seats is two. The two profile block fixing seats are installed on the top faces of two clamping jaws of the self-centering two-jaw chuck respectively. The number of the profile blocks is two. Locating bosses of the two profile blocks are matched with second locating grooves of the two profile block fixing seats respectively. The locating seat is installed on the top face of the self-centering two-jaw chuck. The connection segment of the replaceable locating rod is installed in a rectangular through hole formed in an upright which is arranged on a locating seat body in an inserted mode, and the replaceable locating rod is fixed to the upright of the locating seat through a nut. When the debugging standard part is used, the locating bosses on the two side faces of a debugging standard part body are matched with the second locating grooves of the two profile block fixing seats respectively, and one end face of the debugging standard part body is attached to the upright arranged on the locating seat body.

Description

technical field [0001] The invention belongs to the field of fixtures, in particular to a universal fixture for processing blade profiles. Background technique [0002] The blade is an indispensable part of the engine, gas turbine, fan and other equipment. The traditional blade profile processing fixture is a special fixture designed according to the shape and size of the tenon of the blade, that is, a set of fixtures is designed for a tenon root blade of one size. Therefore, it not only leads to an increase in processing cost, but also takes a long time for debugging when replacing the processed blade, which affects work efficiency. [0003] CN201310596530.2 discloses a general fixture for processing blade profiles, which includes a base, a self-centering two-jaw chuck, a blade tenon fixing seat, an adjustable positioning block, a guide and a shape block. Although this universal fixture only needs to replace the blade tenon fixing seat or block, it can be used for processi...

AI Technical Summary

Problems solved by technology

Although this universal fixture only needs to replace the blade tenon fixing seat or block, it can be used for processing blade profiles of different sizes and different tenon root shapes, but there are the following problems: 1. The structural influence of the blade tenon fixing seat and the block The positioning accuracy is improved; 2. The structure of the adjustable positioning block makes the debugging time of replacing the tenon fixing seat or block of the blade longer, and may cause crushing of the tenon of the processed blade; 3. The positioning time of the fixture on the milling machine table longer

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