A vertical deep hole straightness laser detection device

Abstract

The invention discloses a straightness laser detection device for a vertical longhole. The main structure is that a T-shaped draw bar penetrating through a wedge body is arranged inside a sleeve, the wedge body is contacted with the inner wall of the sleeve, springs are arranged among the upper end face of the sleeve, the wedge body and T-shaped steps of the draw bar. A bar head of the T-shaped draw bar penetrates through the upper end face to be connected with a pull rope, the pull rope is connected with a roller connected with a motor through fixed pulleys, a lifting rope is fastened on the lower end face of the sleeve, a heavy block is installed at the lower end of the lifting rope, a laser transmitter is installed on the lower end face of the heavy block, a support is arranged below the heavy block, and a position sensitive detector is installed on the support, wherein the position sensitive detector is used for receiving light rays sent by the laser transmitter and is connected with a computer system through an A / D converter. By means of the laser technology and the position sensitive detector, a transverse change amount of a practical axis of a part hole relative to a theoretical axis can be dynamically detected in a whole course, and a means for detecting the straightness of the longhole part axis is enabled to be highly precise.

Description

technical field [0001] The invention relates to a straightness detection device for hole parts, in particular to a vertical deep hole straightness laser detection device. 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 equipment manufacturing i...

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

[0005]The price of some high-precision straightness testing instruments is relatively expensive, which is unacceptable

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