Indexable clamp for removing allowance of inner back arc during blade rough machining

Abstract

The invention provides a indexable clamp for removing an allowance of an inner back arc during blade rough machining. The indexable clamp comprises a bottom plate, a V-shaped block and a indexable clamp body, wherein the indexable clamp body is of a cylindrical structure, a V-shaped through groove is arranged in the indexable clamp body, arc-shaped connecting walls are machined at the two ends ofthe indexable clamp body, an arc-shaped long circular hole is arranged in each arc-shaped connecting wall, a positioning block is arranged at one end of the V-shaped through groove, a threaded hole isarranged in the V-shaped block, and the position of the arc-shaped long circular hole is matched with the position of the threaded hole, a bolt penetrates through the arc-shaped long circular hole and then is connected with the threaded hole, so that the indexable clamp is fixedly arranged on the V-shaped block, two sides of the indexable clamp body are respectively provided with pressing mechanisms, and each pressing mechanism comprises a pressing plate, a pressing block and a double-head bolt, wherein the two ends of the double-head bolts are respectively connected with the pressing platesand the bottom plates, the pressing blocks are arranged at one ends of the pressing plates. According to the indexable clamp, the machining of different air channel machining angles of the blades canbe realized by changing the positions of the workpieces installed on the clamp.

Description

technical field [0001] The invention belongs to the field of blade processing, and in particular relates to an indexable fixture for rough machining blade inner back arc removal. Background technique [0002] The steam turbine blade is an important part of the steam turbine. When rough machining the blade, a large amount of machining allowance needs to be removed. In the past, the method of fitter scribing and other methods was used, which resulted in uneven removal of allowance, unstable product quality, time-consuming and laborious alignment during processing, and low efficiency. and other shortcomings. Now, in the process of blade processing, especially rough milling of blade blanks, in order to save processing time and improve production efficiency, the blade blanks are usually clamped by a fixture on an ordinary high-power milling machine for rough milling. However, for different types of blades, the angles of the air passages of the blades are different, which makes i...

AI Technical Summary

Problems solved by technology

However, for different types of blades, the angles of the air passages of the blades are different, which makes it impossible to use a fixed fixture to realize the rough machining of the inner back arc of different types of blades, and each processing of a type of blade requires a A fixture with a suitable angle is used for clamping and processing. Such a fixture has low versatility, and frequent replacement of the fixture is not conducive to processing and production. Therefore, it is necessary to design an indexable fixture suitable for rough machining of different blade airway angles. Inner back arc removal allowance for different blades

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