R&D achievements

Automatic indexing clamping fixture for drilling cogging oil holes; Heavy-duty truck gear insert inner tooth clamp; Transmission synchronizer cone milling fixture; Shaft parts center hole grinding device; Quick clamping positioning milling fixture, an anti-carburizing treatment method, consisting of the following steps:

(1) Outer circle;

(2) The parts are carburized and then cooled;

(3) Remove the carburizing layer that does not need to be carburized, and carry out rough processing;

(4) Roughing parts are oil quenched and tempered to obtain semi-finished products;

(5) The semi-finished products prepared in step (4) are finished to obtain the finished products.           

The present invention by carburizing after the carburizing treatment, the carburizing layer of the part that does not need carburizing is turned away, and after roughing the milling groove, tooth cutting, turn burr, etc. into a semi-finished product, and then the semi-finished product is put into quenching oil to quench, the product hardness is low before quenching, a series of roughing before quenching can improve the processing efficiency and avoid tool damage caused by high product hardness, prolong tool life, reduce production costs.