Central hole processing system and processing method of eccentric shaft

Abstract

The embodiment of the invention discloses a central hole processing system of an eccentric shaft, comprising a horizontal type milling machine, an indexing head and an eccentric shaft clamp, wherein a three-jaw chunk of the horizontal type milling machine is provided with a drilling bit; the indexing head is arranged on a working platform of the horizontal type milling machine; and the eccentric shaft clamp is fixedly connected with the indexing head. In the central hole processing system, the indexing head is arranged on the horizontal type milling machine and is fixedly connected with the eccentric shaft clamp for clamping the eccentric shaft, the positioning and the installation of the eccentric shaft on the working platform of the horizontal type milling machine are realized, and the processing of the central holes at the two ends of the eccentric shaft is realized by rotation of the indexing head. By utilizing the processing system provided by the invention, the problems that when the eccentric shaft below 600mm is processed on a boring machine in the prior art, the size of the working platform of the boring machine is larger, the clamping, the positioning and the alignment of a workpiece are difficult.

Description

technical field [0001] The invention relates to the technical field of eccentric shaft machining, and more specifically, relates to a center hole machining system for an eccentric shaft, and also relates to a center hole machining method for an eccentric shaft. Background technique [0002] Due to its unique structure, the eccentric shaft can realize various mechanical actions, and is a relatively common mechanical component in the field of mechanical design. Due to the special structure of the eccentric shaft, it is difficult to process the center hole of the eccentric shaft. At present, there are four most commonly used processing methods for the center hole of the eccentric shaft: (1) Lathe three-jaw chuck plus gasket method, this process method is based on the eccentricity of the eccentric shaft, the thickness of the gasket is calculated in advance, Machining the eccentric part under a chuck of the three-jaw chuck, this method is suitable for processing the center hole ...

AI Technical Summary

Problems solved by technology

This method is suitable for the processing of a single small batch of workpieces. It is time-consuming to align and is not an economical process; (3) Eccentric sleeve method. This method is based on the eccentricity of the eccentric shaft. The high eccentric sleeve is set on both ends of the eccentric shaft. The matching between the eccentric sleeve and the shaft diameter is usually H7 / h6, and the eccentric part of the eccentric shaft is driven out

This method is suitable for the processing of eccentric shafts with large batches, and has high processing efficiency. The disadvantage is that the processing requirements of eccentric sleeves are relatively high, and there is a gap between the sleeve and the shaft, which affects the machining accuracy of eccentric shafts; (4) Machining on a boring machine The eccentric hole method uses the rotation and coordinate translation of the boring machine table to find the center hole. This method is only suitable for the processing of the center hole of the eccentric shaft with a long length and a large diameter. For the commonly used eccentric shaft below 600mm, Due to the large size of the boring machine table, it is difficult to clamp, locate and align the workpiece, and the machining of the eccentric shaft with a small length is not suitable for the boring machine process, so it will cause inconvenient machining of the eccentric shaft and low precision machining

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