Crankshaft connecting rod shaft diameter processing tooling system

Abstract

The invention discloses a crankshaft connecting rod shaft diameter processing tooling system and belongs to the technical field of fixtures. The crankshaft connecting rod shaft diameter processing tooling system comprises a clamp frame, and the bottom of the clamp frame is provided with a locating surface for being fixedly installed with a bed guide rail. A Morse taper shaft, an electromagnetic clutch, an indexing structure and a clamp device are sequentially installed at the front end of the clamp frame from outside to inside. A Morse taper shaft, an electromagnetic clutch and a clamp device are sequentially installed at the rear end of the clamp frame from outside to inside. The crankshaft connecting rod shaft diameter processing tooling system is combined with an ordinary crankshaft grinding machine to be used, and initial debugging is simple and practical; the process capability of the crankshaft grinding machine can be brought into full play, the requirements for skills of operators are reduced to the largest extent; and on the premise of meeting the processing technical requirements, effects of improving product quality stability and processing speed are improved.

Description

technical field [0001] The invention relates to the technical field of fixtures, in particular to a fixture that can be used for rough and finish machining of crankshaft connecting rod journals of six-cylinder engines. Background technique [0002] Functional parameters of the crankshaft: the crankshaft is one of the five core parts that guarantee the external output characteristics of the multi-cylinder internal combustion engine. The runout of the center of rotation, the phase difference of the connecting rod journals in different phases relative to the circle of the center of rotation, etc. The crankshaft, cylinder block, connecting rod, and piston form a crank-slider mechanism that converts the gas pressure formed by internal combustion into rotational power output. [0003] Process status: In addition to the general processing rules of shafts, crankshaft production also has its unique structure and process characteristics, mainly including complex shape, poor rigidity,...

AI Technical Summary

Problems solved by technology

For example: (1) In the rough machining process, multi-tool lathes are commonly used to turn crankshaft main journals and connecting rod journals. Since the stability of the process quality is greatly affected by factors such as machine tools, fixtures, operations, and inspections, it is necessary to leave a margin to ensure the accuracy of the finished product. Large finishing allowance; (2) In the finishing process, a special crankshaft grinder (such as MQ8260) is used to complete rough grinding-semi-finishing-finishing-polishing on an ordinary crankshaft fixture, and the operator is installing, adjusting, processing, The detection process requires high skills, which seriously affects the processing efficiency and the stability of product quality

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