Machining fixture for eccentric part

Abstract

The invention relates to a machining fixture for an eccentric part. The machining fixture for the eccentric part comprises a guide rail 1, an upper sliding block 5, a lower sliding block 6, an upper chuck 2, a lower chuck 3 and set screws 7, wherein a dovetail groove 8 is arranged on the guide rail 1, one side of the upper sliding block 5 and one side of the lower sliding block 6 are installed on the dovetail groove 8 on the guide rail, the upper chuck 2 is fixedly installed on the other side of the upper sliding block 5, the lower chuck 3 is fixedly installed on the other side of the lower sliding block 6, one end of the upper chuck 2 and one end of the lower chuck 3 are V-shaped, the two V-shaped end surfaces face to each other, the dimensions of the two V-shaped end surfaces are the same, and two set screws 7 are further arranged on the guide rail 1 and respectively press the upper sliding block 5 and the lower sliding block 6. When the eccentric part is machined, since the machining of the eccentric part is not required to be realized through a center hole of the part, the influences of the center hole and the area of the end surface are avoided, the machining precision is high and the reliability is good.

Description

technical field [0001] The invention relates to a processing fixture, in particular to a processing fixture for eccentric parts. Background technique [0002] In the mechanical field, the eccentric shaft is a relatively common structure, which is characterized by at least two circular shafts on the part, and the axes of the two circular shafts are parallel but not coincident. In the processing of similar parts, the single-axis machining method is generally adopted, that is, the center hole is machined at the position of the axis at the two ends of the shaft, and processed after being clamped by the top of the equipment. This method needs to set a center hole on each axis, and when the distance between the center axes is large and the area of ​​the end surface of the shaft is large enough, the purpose of processing can be achieved. However, for some eccentric shaft parts, the distance between the axes is very small, even only a few millimeters. When the center hole is set on...

AI Technical Summary

Problems solved by technology

However, for some eccentric shaft parts, the distance between the axes is very small, even only a few millimeters. When the center hole is set on the end face, drilling and grinding are easily affected. The two center holes set in this way are strong, accurate and reliable. The performance is very poor, and some even cannot be realized; or for some parts, the size of the end face of the eccentric shaft is very small, and the axis center of a certain section of the circular shaft is located outside the end face, and the processing cannot be completed by setting a center hole on the end face

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