Engine cam shaft manufacturing machining technology

Abstract

The invention relates to an engine cam shaft manufacturing machining technology. A surface grinding device is used in the engine cam shaft manufacturing machining technology and comprises a base, a fixing unit and a grinding unit. The left side of the upper end of the base is provided with the fixing unit, and the grinding unit is arranged on the right side of the upper end of the base. Through increasing of the contact area of an engine cam shaft and the grinding executing end, the contact area between a connecting shaft neck and a grinding belt is increased, the contact time between the connecting shaft neck and the grinding belt is prolonged, the connecting shaft neck cannot constantly make contact with the grinding end in the rotation process, and the problem that grinding of the connecting shaft neck is not complete is solved. Through a method of continuous replacement of a grinding belt at the executing end, the abrasion degree of the grinding end is kept at a certain value or above, and the problem that the grinding effect is not good is solved.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an engine camshaft manufacturing process. Background technique [0002] The crankshaft is the most important component in the engine. It bears the force transmitted from the connecting rod, converts it into torque and outputs it through the crankshaft and drives other accessories on the engine to work. The crankshaft is affected by the centrifugal force of the rotating mass, the periodically changing gas inertial force and the reciprocating inertial force, so that the crankshaft is subjected to bending and torsional loads. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the surface of the journal needs to be wear-resistant, work evenly, and have good balance. Usually we refer to the engine speed as the crankshaft speed. [0003] The following problems are often encountered in the process of crankshaft manufacturing and processing: 1. The cra...

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Problems solved by technology

[0003] The following problems are often encountered in the process of crankshaft manufacturing and processing: 1. The crankshaft needs to be ground during the production process, but the contact area between the crankshaft and the ground execution end is too small, so that the connecting journal cannot always be in contact with the ground end during the rotation process. 2. When the crankshaft is polished by the belt, the belt wears quickly, and it is difficult to select the critical point of the belt to replace the belt, so that the belt with high wear degree can grind the crankshaft not strong enough

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