Detecting device for positive and negative surfaces of valve seat ring

Abstract

The invention relates to a detecting device for positive and negative surfaces of a valve seat ring. The detecting device comprises a vertical main bracket, wherein the upper part of the main bracket is fixed together with a cylinder barrel of an air cylinder; a piston rod of the air cylinder faces upwards and is fixedly connected with the right end of a bracket I; a detection rod penetrates through a longitudinal seam in the left end part of the bracket I; a detection head is arranged at the lower end of the detection rod; a spring in a compression state sleeves the detection rod between the detection head and the bracket I; a limiting gasket is fixed at the upper part of the detection rod; a clamping block fixed on the detection rod is arranged above the limiting gasket; a limiting slot which penetrates in the front-rear direction is formed in the right end of the clamping block; a bracket II is fixed on the middle part of the bracket I; a pin II in the front-rear direction is arranged at the left end of the bracket II; the pin II is rotationally connected with a light shielding plate; a pin I penetrates through the limiting slot and the left end part of the light shielding plate in the front-rear direction; a photoelectric switch is arranged at the right end of a bracket II; the right end of the light shielding plate is provided with a light through slot corresponding to the photoelectric switch. According to the scheme, the invention provides the detecting device, which adopts a mechanical contact mode and is high in reliability, for positive and negative surfaces of the valve seat ring.

Description

Technical field [0001] The invention relates to an engine cylinder head valve seat ring pressing technology, in particular to a valve seat ring front and back detection device. Background technique [0002] The press-fitting of the engine cylinder head seat ring is a key process in the production process of the engine cylinder head. The quality of the press-fitting and the accuracy of the press-fitting are directly related to the quality and cost of the engine. In order to improve the degree of automation and production efficiency of seat ring assembly and reduce the scrap rate of cylinder heads, at present, fully automatic press-fitting machines automatically convey the seat ring and automatically judge the chamfering direction on the seat ring and follow the correct direction. Pressing into the bottom hole of the seat ring, usually the method of judging the chamfering direction of the seat ring is through the vibrating plate, but the discrimination rate of this method is not hi...

AI Technical Summary

Problems solved by technology

However, due to the small chamfer on the seat ring, the displacement difference caused by the chamfer of the seat ring in this scheme is a small amount, which requires a high detection accuracy, and the change of the detection signal can be judged by the program, which requires the accuracy of the equipment. Too high, severely limited in actual use

Images