A fixture structure for plunger chute machining

Abstract

The invention relates to a clamping structure for machining plunger inclined grooves. The clamping structure comprises base disc which in location connection with a location round pin of a bottom plate. A first center mechanism and a clamp mechanism are fixedly connected onto the bottom plate respectively. A second center mechanism is arranged in the clamp mechanism, and a location mechanism is arranged on the clamp mechanism. According to the clamping structure, a center hole of one end and a cap of the other end of the plunger are clamped through a yin center and a yang center respectively, so that the circle center location of the two ends of the plunger is achieved, and the location reference is consistent with the design reference; the location mechanism is use, a location block of the location mechanism used for being attached to the plunger flat surface, the relative position of the plunger axis direction is adjustable through the yin center and the yang center, and the adjustability of the rotation direction and the machining angle is achieved through a dial.

Description

technical field [0001] The invention relates to a fixture structure, in particular to a fixture structure for machining inclined grooves of plungers. Background technique [0002] At present, the plunger chute processing fixture uses the "V" block to cooperate with the end face of the plunger for positioning, and the plunger is pressed together by the pressure plate and the screw. The clamping method of this fixture has the following disadvantages: [0003] (1) The processing of the plunger is positioned in the outer circle, which requires high consistency in the size of the plunger's outer circle. [0004] (2) The pre-tightening force provided by the operator when placing the plunger needs to be consistent, too loose or too tight will cause the gauge to be scrapped when measuring the chute. [0005] (3) The plunger is easy to move during the clamping process, causing the gauge size to be out of tolerance. [0006] (4) Since the plunger structure needs to be processed with...

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Problems solved by technology

[0004] (2) The pre-tightening force provided by the operator when placing the plunger needs to be consistent, too loose or too tight will cause the gauge to be scrapped when measuring the chute

[0005] (3) The plunger is easy to move during the clamping process, causing the gauge size to be out of tolerance

[0006] (4) Since the plunger structure needs to be processed with two inclined grooves, it needs to be clamped twice, resulting in high frequency of clamping, greatly wasting processing time, time-consuming and labor-intensive, and reducing processing accuracy

[0007] (5) Due to the variety of plungers, the angle between the processing chute and the flat position of the plunger (the flat position is a flat surface on the plunger) is different, so a set of fixtures is only suitable for one type , For different types of plungers, different fixtures need to be processed, the design and manufacturing costs are high, and the inventory is increased

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