A hole straightness detection device with liquid plastic

Abstract

The invention belongs to the technical field of straightness detection of hole parts, specifically a hole straightness detection device for liquid-filled plastics, which solves the problem that there is no mature product for detecting the straightness deviation of the deep hole axis in the prior art . Hole straightness detection device with liquid plastic, including: tie rod, wedge, wedge, sleeve, liquid plastic, probe body, elastic sleeve, displacement position sensitive detector, inner laser emitter, corner position sensitive detection There is a radial through hole on the main body of the probe, an elastic sleeve is placed over the radial through hole, a liquid plastic is arranged in the radial through hole, and an inner laser emitter and a laser transmitter are fixed on the outer end of the probe main body Displacement position sensitive detector. The invention combines the characteristics of wedge-shaped self-centering and liquid plastics, has simple structure, low cost, and is convenient to use, and can realize the whole dynamic detection of micro-displacement changes and micro-rotation angle changes of the actual axis of the deep hole relative to the theoretical axis.

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...

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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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