Deep hole roundness and straightness measuring device

Abstract

The invention relates to a deep hole roundness and straightness measuring device which comprises a fixing cylinder with a first through hole formed in the axis position, a connecting shaft, a laser displacement sensor, a two-dimensional position sensitive sensor, an inclination angle sensor, a driving motor and a motor supporting block. A motor supporting block is fixedly connected in the first through hole. The two-dimensional position sensitive sensor and the inclination angle sensor are fixed on the motor supporting block and are both arranged on the outer side of the first through hole; the driving motor is fixedly connected to the motor supporting block in the first through hole; and the connecting shaft is located at the end part of the first through hole, one end of the connecting shaft is connected with the driving motor, the other end of the connecting shaft is fixedly connected with a mounting frame, and the mounting frame is fixedly connected with the laser displacement sensor. Therefore, a problem of low measurement precision of a measurement device in the prior art is solved, and the measuring device is kept coaxial with a deep hole part. The vibration interference inthe measurement process is reduced, and the measurement precision of the roundness and straightness of the deep hole is further improved.

Description

technical field [0001] The invention relates to the technical field of deep hole detection, in particular to a deep hole roundness and straightness measuring device. Background technique [0002] In the machinery manufacturing industry, inner holes with an aspect ratio exceeding 10 are generally called deep holes. Deep hole processing is complex and special. In addition to the special requirements for tools and processing methods, problems such as difficult observation of the processing part and tool status, difficulty in chip removal, and difficulty in coolant delivery lead to poor straightness of the hole axis in deep hole parts. Poor surface processing quality and other phenomena, so the straightness and roundness of deep space parts are very important to the quality of the product. At present, the commonly used straightness measurement methods include optical axis method, ultrasonic wall thickness measurement method, and induction plate strain gauge. The commonly used r...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the above-mentioned prior art, the present invention discloses a deep hole roundness and straightness measuring device, which solves the problem of low measurement accuracy of the measuring device in the prior art, keeps the measuring device coaxial with the deep hole parts, and reduces the Minimal vibration interference during the measurement process, further improving the measurement accuracy of deep hole roundness and straightness

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