Casting forming machining process for inner rotors of engine oil pumps

Abstract

The invention relates to a casting forming machining process for inner rotors of engine oil pumps. According to the casting forming machining process, a workbench, a fixing device and a moving device are arranged, the fixing device is arranged at the top of the workbench, and the moving device is arranged at the position, located on the outer side of the fixing device, of the top of the workbench. The casting forming machining process has the advantages that through cooperation of the workbench, the fixing device and the moving device, firstly, the cast and formed inner rotors of the engine oil pumps are placed on the fixing device in batches, so that the working efficiency is improved when machinery carries out sand cleaning on the inner rotors of the engine oil pumps, after placement is completed, and a certain distance is ensured between the inner rotors of the engine oil pump through the fixing device, so that the sand cleaning effect of the moving device on the inner rotors of the engine oil pumps is improved.

Description

technical field [0001] The invention relates to the technical field of casting and forming of an inner rotor of an engine oil pump, in particular to a casting and forming process of an inner rotor of an engine oil pump. Background technique [0002] The rotor oil pump consists of a housing, an inner rotor, an outer rotor and a pump cover. The inner rotor is fixed on the rotor shaft with keys or pins, and is directly or indirectly driven by the crankshaft gear. The eccentric distance between the inner rotor and the outer rotor center is e, and the inner rotor drives the outer rotor to rotate in the same direction. Generally, the rotor oil pump The inner rotor has 4 or more convex teeth, and the number of concave teeth of the outer rotor is one more than the number of convex teeth of the inner rotor. The rotor type oil pump has compact structure, small size and light weight, large oil suction vacuum and large pump oil volume. , good oil supply uniformity, low cost, widely use...

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Problems solved by technology

[0003] However, after the inner rotor of the engine oil pump in the market is cast, sand will form on the surface, and the following problems exist in the sand-out treatment of the inner rotor of the engine oil pump: a. The inner rotor of the oil pump is quickly clamped and fixed, which reduces the working efficiency of the machine when sanding the inner rotor of the engine oil pump

b. Before the inner rotors of multiple sets of engine oil pumps are clamped and fixed at the same time, the distance between the inner rotors of multiple sets of inner rotors cannot be guaranteed, resulting in poor sand cleaning effect of the inner rotors of the engine oil pump

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