Universal hold-down mechanism of steam turbine blade drill jig

Abstract

The invention relates to a universal hold-down mechanism of a steam turbine blade clamp, comprising a frame composed of an upper cover plate, a lower cover plate, a left cushion block and a right cushion block, wherein the upper cover plate and the lower cover plate are respectively provided with a corresponding slide way which is provided with a plurality of notches; a universal slide block is arranged between the upper cover plate and the lower cover plate; the upper side and the lower side of the universal slide block are respectively provided with a support shaft; the support shaft on the upper side of the universal slide block is installed in the slide way in the upper cover plate; the support shaft on the lower side of the universal slide block is installed in the slide way in the lower cover plate; the universal slide block is movably connected with a pressure lever of which the axial direction is crossed with the axial direction of the support shaft; and one end of the pressure lever is provided with a pressure head. The universal hold-down mechanism comprises the slide ways, the universal slide block, the pressure lever and the pressure head, has simple structure, strong generality, low using cost and convenient operation; a blade is pressed by the pressure head; the pressure head is connected with the universal slide block which slides in the slide ways, so that the universal hold-down mechanism is flexible to adjust and has high efficiency.

Description

(1) Technical field [0001] The invention relates to tooling for mechanical processing, in particular to a universal pressing mechanism of a steam turbine blade drilling fixture. (2) Background technology [0002] The steam turbine blade profile is a twisted profile, and the blade profile processing usually uses three center holes for positioning. The three center holes are the processing positioning reference, so the processing requirements are relatively high, and a special drilling jig is required to ensure it. [0003] Existing drill jig structure such as figure 1 , figure 2 As shown, it consists of two left and right columns 1 and two base plates 8 up and down to form a clamp body; an upper drill plate 2 is fixed below the base plate 8 above the clamp body, and an upper top 4 is fixed on the upper drill plate 2; the base plate below the clamp body 8 is fixed with a lower drill plate 9, and two lower tops 10 are fixed on the lower drill plate 9; two columns 1 inboards...

AI Technical Summary

Problems solved by technology

[0005] The above method of fixing the blades on the drilling jig by pouring tin-bismuth alloy can ensure the processing quality of the three center holes of the blades, but the operation is troublesome, the efficiency is low, and the cost is high

Images