Hole linearity detecting device with liquid plastics

Abstract

The invention belongs to the technical field of hole type part linearity detection and particularly relates to a hole linearity detecting device with liquid plastics, which solves the problem that a mature product used for detecting the deep hole axial line linearity deviation does not exist in the prior art. The hole linearity detecting device with the liquid plastics comprises a pull rod, a first wedge-shaped body, a second wedge-shaped body, a sleeve tube, liquid plastics, a measuring head main body, an elastic sleeve, a displacement position sensitive detector, an inner laser emitter, a rotation angle position sensitive detector and an outer laser emitter, wherein a radial through hole is formed in the measuring head main body, the elastic sleeve is sheathed outside the radial through hole, the liquid plastics are arranged in the radial through hole, and the outer end surface of the measuring head main body is fixedly provided with the inner laser emitter and the displacement position sensitive detector. The hole linearity detecting device has the advantages that the characteristics of wedge-shaped automatic centering and liquid plastics are combined, the structure is simple, the cost is low, the use is convenient, and the whole-process dynamic detection of micro-displacement changes and micro-rotation angle changes of the practical axial line relative to the theoretical axial line can be realized.

Description

technical field [0001] The invention belongs to the technical field of straightness detection of hole parts, in particular to a hole straightness detection device for liquid-filled plastics. Background technique [0002] Deep hole machining is complex and special, and it is difficult to observe the machining parts and tool conditions. The machining process is affected by many factors such as tool holder deformation, system chatter, workpiece material, drill parameters, cutting parameters, oil pressure, and difficulty in chip removal. The axis of deep-hole parts often deviates. Once the deviation reaches a certain level, the straightness error of the axis of the deep-hole parts will change sharply, resulting in adverse consequences such as drill bit damage, workpiece scrapping, low product accuracy, and unqualified quality. Since deep hole processing serves the equipment manufacturing industry, the quality of deep hole workpieces directly affects the development of the equipm...

AI Technical Summary

Problems solved by technology

[0004]The research on deep hole straightness detection and deviation correction technology at home and abroad continues to deepen, but compared with other measurement items, the straightness detection technology is lagging behind, especially in For the straightness detection of the hole axis of large and long workpieces, so far, there is no mature product for detecting the deviation of the straightness of the deep hole axis

In practice, workers often use calipers to measure the wall thickness along different radial directions at both ends of the hole to judge the straightness. This method cannot measure the internal axis deviation of the deep hole, that is, it cannot realize the deep hole parts The full continuous dynamic detection of straightness is very imprecise, and it is easy to fall into the misunderstanding of point-to-surface

However, some laser straightness testing instruments cannot realize the function of detecting micro-displacement changes and micro-rotation angle changes at the same time

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