The connecting rod processing process is: two end-small head widening coarse grinding size head two end-pull  the connecting rod size head side face positioning and pull the connecting rod cover two end face and stem two end corner-pull small head two CuLa bolt cant and seat surface, pull matching, to play literally heavy convex mesa and cover position -ing and thick boring side under stem semicircle and corner and small head, thick boring hole on pole, small head size hole and semicircle head hole corner-cleaning parts and parts inspection,demagnetism, fine milling bolt seat surface and R5 arc-milling broken rod, cover -small head hole two oblique end plane on the corner and fine grinding connecting rod rod body two end-processing bolt hole-bars, to cover the junction plane and corner-to mate stem and cleaning matching cover burr and matching stem rod cover cover face detection with precision and manual assembly tightening bolts and cover and print stem and thick boring, matching mark big hole on both sides and corner-half fine boring hole and fine boring big small head bushing apparatus-inspection big head and fine boring hole small head bushing precision apparatus and pressure into the small head hole bushings, weighing to heavy-fine boring hole big head, small head bushing hole-and eventually finished product inspection and cleaning rust. 

The connecting rod body and cover thickness different, improve the processing man -ufaturability. The connecting rod cover thickness for 31 mm, than the connecting rod rod thickness of 3.8 mm, cover unilateral small two end precision products demand is not high,but one processing and into. Due to the small processing, cooling conditions, make process -ing vibration and grinding burns not easy the creation. The connecting rod rod and cover the assembly to end does not exist, it is not the same problems connecting rod ends the fine grinding don't need to be in after the assembly, can be in the bolt hole before processing.Bolt hole, bearings to end of the position precision machining  precision can be directly guarantee, and won't fertilization  grinding the influence of accuracy. The connecting rod small head two end face and a narrow by cant plane composition.This kind of wedge design can increase its confined area,  in order to improve the strength of the piston and rigidity. In the processing, and general connecting rod more than cant processing and small head hole two ramp Angle pouring process; By increasing the positioning and  parts of the pressure head orientation accuracy to avoid bushing pressure partial happens, but actually increased the pressure bushing process the difficulty of the processing. Take the mouth with inclined surface. The connecting rod joint surface Finishing the benchmark is adopted in the product orientation method and clearance design position datum. The connecting rod rod and assembly processing, the stem seal face, little head surface and side, big head lateral processing localization way; In the bolt hole to check the mouth with the connecting rod surface treatment working  procedure of processing, using a cover for its end, bolts two seat surface, a bolt a side localization method of processing. This repetitive positioning precision and reliability of the  localization, the clamping method, can make the part deformation small, easy to operate, can general from rough machining precision to the in each procedure. Because  the locating datum unity, make each working procedure of the anchor point size and position and keep the same. All of these processes, ensure stable machining accuracy provided the good condition.