Rapid positioning and circumferential drilling device for pull rod type parts on valve and drilling method

Abstract

The invention relates to a rapid positioning and circumferential drilling device for pull rod type parts on a valve. The rapid positioning and circumferential drilling device comprises a base, a positioning block, a positioning screw and a pressing mechanism, wherein a through groove and a main scale are arranged on the base, a rod groove and an auxiliary scale are arranged on the positioning block, and the positioning block is pressed by the positioning screw; the pressing mechanism comprises a pressing block, a spring, a pressing screw, a tensioning rod and a handle; a vertical pressing holeis formed in one side of the through groove in the base, the spring is arranged in the pressing hole, and one end of the pressing block enters the pressing hole and then abuts against the upper portion of the spring to form a lifting end; an arc-shaped end face is arranged at the end of the handle and abuts against the top of the lifting end of the pressing block, and an eccentric shaft is arranged on the arc-shaped end face; the upper end of the tensioning rod is rotationally connected with the eccentric shaft, and the lower end of the tensioning rod sequentially penetrates through the lifting end of the pressing block and the spring and then is fixedly connected with the pressing hole; and the other end of the pressing block horizontally extends to the position above the rod groove to form a pressing end. Rapid clamping and positioning are achieved.

Description

technical field [0001] The invention belongs to the technical field of machining auxiliary equipment, and in particular relates to a fast pressing and positioning tool for drilling a tie rod part in the circumferential direction and a use method thereof. Background technique [0002] In the field of normal temperature valves for launch vehicles, the tie rod is a slender rod part of the valve, which is a key part for adjusting the opening pressure of the valve. There are ventilation cross holes distributed in the circumferential direction of the tie rods, which have high dimensional and position accuracy, and have the characteristics of small hole diameter and difficult positioning during processing. At present, when drilling with ordinary drilling equipment, each piece can only be positioned one by one in length and circumferential direction with a dividing head. Then clamping, each piece of this type of parts needs to be tool-set and aligned during mass production. The proc...

AI Technical Summary

Problems solved by technology

There are ventilation cross holes distributed in the circumferential direction of the tie rods, which have high dimensional and position accuracy, and have the characteristics of small hole diameter and difficult positioning during processing. At present, when drilling with ordinary drilling equipment, each piece can only be positioned one by one with the dividing head in the length and circumferential direction. Re-clamping, each piece of this type of parts needs to be tool-set and aligned during mass production. The process of tool-setting and aligning takes a long time, and the processing seriously restricts the production and processing efficiency.

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