Development of The Automatic Steering Gear Rack Hardness Testing Control System;

The paddy seeds were often broken or even damaged,and its germination rate or integral rice rate was reduced by the method of traditional half-feeding thresher,because it often impacts and sorts out paddy rice by wire-loop,rigid spike-tooth or rigid pole tooth.

This paper mainly discusses the problem of breaking chip in deep hole machin ing operation, and analyses theoretically the key factors in solving the problem A breaking chip mechanism with type "gear-connected bar" is designed for solving the aforementioned problem.

The paper puts forward a kind of Geared six-bar slip block mechanism that changing margin of two binding linkage s initial angles regulates a route of slip block,it has the advantage of the geared six-bar slip block mechanism.