A corrugated foil mold and its manufacturing process

Abstract

A wave foil die comprises a die base, a locating block, a cushion piece and a pressing block, a female die is formed on the die base, and a bent wave foil semi-finished product is arranged in the female die. The wave foil die further comprises a polytetrafluoroethylene sheet placed on the wave foil semi-finished product, a mandril of the pressing block and a center hole of the die base are coaxial, the pressing block is placed on the polytetrafluoroethylene sheet, one side face of the pressing block is attached to one side face of the locating block, the locating block is placed on a working face of the die base, a rectangular groove and a screw hole close to the rectangular groove are formed in the locating block, and the cushion piece is placed in the rectangular groove. The wave foil die further comprises an M4 inner hexagon screw and an M2 inner hexagon screw, wherein the M4 inner hexagon screw is inserted in the back face of the die base to connect the locating block and the die base into a whole, and the M2 inner hexagon screw is arranged in the screw hole and fixes a wave foil by pressing the cushion piece in the rectangular groove tightly. A flexible molding method is adopted in the wave foil, a male die for the wave foil die is not needed, and machining cost of the die is reduced.

Description

technical field [0001] The invention relates to a wave foil mold and a manufacturing process thereof, in particular to a wave foil mold in a separate wave foil dynamic pressure gas thrust bearing and a manufacturing process thereof, belonging to the field of gas dynamic pressure bearings. Background technique [0002] Dynamic pressure gas bearing is a fluid film lubricated bearing with gas as the lubricating medium. Compared with traditional liquid lubricated bearings and rolling bearings, dynamic pressure gas bearing has high speed, low friction, low noise, no pollution, High working precision and high reliability. Its working principle is to form two high-speed relative moving surfaces forming a wedge-shaped gap, and the gas is brought into the wedge-shaped gap under the action of the gas's own viscosity to form a dynamic pressure fluid film that can withstand axial loads. Compared with static pressure gas bearings, The aerodynamic pressure bearing does not require extern...

AI Technical Summary

Problems solved by technology

The rotor system supported by rigid bearings is difficult to meet the requirements of reliability and stability, the bearing processing accuracy and assembly accuracy are high, and the problem of short service life has not been resolved

The corrugated foil is a key part of the entire bearing, but the manufacturing process of the corrugated foil is complicated. It takes a lot of work to select the material of the corrugated foil, determine the structural size, forming process, heat treatment, and surface treatment, so the investment in research and development is large.

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