摘 要关键词： 加工工艺 夹具设计
Abstract
Connecting rod is one of the main driving a diesel engine, this paper mainly discusses the process of connecting rod and fixture design. The connecting rod size accuracy, precision and accuracy of the shape position requirements are very high, and rigid more bad of connecting rod, easy to produce the deformation, so in arrangement process, they need to put the main surface finishing process coarse separate. Gradually reduce machining allowance, cutting force and stress, and the effect of correction of the deformation after processing, can finally achieved the components the technical requirements. Connecting rod link the piston and crankshaft, the function is the reciprocating motion of the piston to the rotary motion of the crankshaft change, and the role of the forces on the piston to the output power transfer to the crankshaft.
The work of the requirements of connecting rod connecting rod with high strength and fatigue life; And with adequate rigid and toughness. Connecting rod material generally use 45 steel, 40 Cr, 20 CrMnMo or 40 MnB conditioning just etc. Alloy steel with high intensity, but on the stress concentration is very sensitive. So, in the connecting rod appearance, excessive rounded, etc must strictly requirements, should also pay attention to the quality of surface processing to improve the fatigue strength, high strength steel alloy application and can't reach the expected effect
Automobile engine connecting rod is one of the main driving part, it in diesel engine, in the role of the piston top of inflation pressure on to the crankshaft, and of the crankshaft is driven by the drive and the piston compressor cylinder of gas. Connecting rod in the work under a drastic dynamic load. By connecting rod connecting rod body and connecting rod cover two parts. Connecting rod body and connecting rod on the cover with big hole bolt and nut and install with the crankshaft. In order to reduce wear and easy to repair, the connec
