Method for enhancing clamping accuracy during rough machining of crankshaft and turning tool applying same

Abstract

The invention discloses a method for enhancing clamping accuracy during rough machining of a crankshaft and a turning tool applying the method. According to the method, on the basis of the original process comprising the steps that two end faces are milled, and a central hole is drilled, the process of turning a big-end outer circle is added, in addition, the turning tool for turning the big-end outer circle is provided, and finally rough turning and finish turning are performed on a small-end outer circle through a process. The turning tool comprises a base, supports and a center drill. The supports are arranged in the front of the base. The center of the base is provided with the center drill. The turning tool further comprises tool handles and blades. The tool handles are fixed to the supports and provided with the blades. According to the method, the machining quality can be guaranteed, no new machining procedure is added, and meanwhile no machining tact is added. The turning tool is simple in structure and low in cost; the clamping quality of subsequent procedures can be guaranteed, neither new equipment nor new worker needs to be additionally arranged, the place in a workshop is saved, the machining cost is controlled, and operability is extremely high.

Description

technical field [0001] The invention relates to a method for improving the clamping accuracy of rough machining of a crankshaft and a turning tool applying the method, belonging to the field of crankshaft machining. Background technique [0002] There are currently two methods for rough machining and clamping of the crankshaft: the first method is to mill the two ends of the crankshaft and drill the center hole, and then use an ordinary lathe to clamp the outer circle of the small end of the crankshaft to rough the outer circle of the big end. Round, then do the third process, that is, rough and fine turning the outer circle of the small end; the second process method is to first mill the two ends of the crankshaft and drill the center hole, and then directly clip the crankshaft blank to do the third process without turning the outer circle of the big end Process, that is, rough and fine turning the outer circle of the small end. If it is processed according to the first pr...

AI Technical Summary

Problems solved by technology

If it is processed according to the first process method, there will be an additional process of separately turning the outer circle of the big end, and correspondingly there will be one more equipment and one more operator, which has the disadvantages of many processes and high cost; if it is processed according to the second This processing method is to directly clamp the crankshaft blank for rough and fine turning of the outer circle of the small end, so there are hidden dangers in the processing quality of this process

Because the surface quality of the blank cannot be compared with that after processing, and there are unstable factors such as sand sticking and wrong box, it will also cause greater wear and tear on the fixture of the lathe, which is not conducive to equipment maintenance

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