Fixture and positioning method for milling machine for processing tile screw piles on floating wall of annular flame cylinder

Abstract

The invention provides a milling machine jig for machining studs of a floating wall tile of an annular flame tube and a locating method. The milling machine jig comprises a linear sliding plate, wherein the linear sliding plate is installed on a jig base through slideways. A rotating base is arranged on the linear sliding plate and comprises a rotation curved surface, wherein the rotation curved surface and the center line of the annular flame tube are concentric. A rotating sliding block which can slide is arranged on the rotation curved surface of the rotating base. An X-direction V-shaped block and a Y-direction V-shaped block are arranged above the rotating sliding block, are perpendicular to each other, and are connected with V-shaped block support columns through hinge pairs respectively, hinge holes are strip-shaped holes, and the V-shaped block support columns are fixedly arranged on the jig base. The locating method comprises the steps that the tile with the studs is installed on the rotating sliding block, X-direction locating is conducted on the studs through the Y-direction V-shaped block, Y-direction locating is conducted on the studs through the X-direction V-shaped block, and the position of the rotating sliding block and the position of the linear sliding plate are locked. According to the milling machine jig and the locating method, accurate locating and quick locating can be conducted on the studs, arranged in different spatial directions, of the tile, and therefore numerical control machining of the studs of the tile is achieved, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the field of mechanical processing of aviation parts, and in particular relates to a fixture and a positioning method for a milling machine for processing floating wall tile screw piles of an annular flame cylinder, and is also suitable for processing parts with similar structures in other industries. Background technique [0002] The floating wall tile is the inner heat insulation sheet on the annular flame tube of the combustion chamber of the new aero-engine. More than 100 floating wall tiles are used on one flame tube. The studs on the tiles are connected with the inner and outer walls of the flame cylinder. There are five screw piles on one tile, and the screw piles are cast into one body with the tile in the normal direction of each point on the curved surface, and the threads on the screw piles are processed by cutting. To process the thread of the screw pile, it is necessary to keep the center line of each screw pile c...

AI Technical Summary

Problems solved by technology

[0004] The traditional method of relying on alignment to determine the direction and position of each screw pile is too slow to meet the needs of production

However, the direction and position of each screw pile are determined by fixture positioning, because the screw pile is short and one end is connected to the curved surface, the positioning space is too small

Images