Device and method for ultrasonically measuring the thickness of quenched layer on the surface of lead screw

Abstract

The invention discloses a device and method for ultrasonically measuring the thickness of a quenched layer on the surface of a lead screw, comprising a transceiver probe connected to a controller; The couplant application device is matched with the couplant application device, and the couplant application device applies the couplant between the transceiver probe and the surface to be measured; the transceiver probe stable positioning device includes a fixing device, and an even number of support frames are fixed on the fixation device, and the support frames are distributed on the Two sides of the transceiver probe; the coupling agent application device is fixed on the fixing device, the coupling agent application device includes a rotating mechanism, and the lower part of the rotating mechanism is connected with the coupling agent nozzle. On the premise of not destroying the working state of the ball screw, the thickness of the quenched layer of the screw can be inspected and measured; the operation is simple, the cycle is short, the cost is low, the flexibility is convenient, the efficiency is high, and it is harmless to the human body.

Description

Device and method for ultrasonically measuring the thickness of quenched layer on the surface of lead screw technical field The invention relates to a device and method for ultrasonically measuring the thickness of a quenched layer on the surface of a lead screw, in particular to measuring the thickness of the quenched layer on the surface of a lead screw by using the ultrasonic principle, and belongs to the field of mechanical engineering. Background technique In recent years, with the continuous improvement of the overall level of the equipment manufacturing industry, the performance requirements of the ball screw pair, the core component of CNC machine tools, are getting higher and higher. The surface quenching of the screw is an important process of the screw, which seriously affects the quality and service life of the screw. . Today, the measurement of the thickness of the quenched layer on the surface of the lead screw is still limited to destructive testing. The spe...

AI Technical Summary

Problems solved by technology

Today, the measurement of the thickness of the quenched layer on the surface of the screw is still limited to destructive testing. The specific method is to slice first, then acid-etch, and finally use a microscope to measure. The process is long-winded, complicated, and difficult to control. The error seriously affects the measurement of the thickness of the quenched layer on the surface of the ball screw, which reduces the measurement accuracy. Most of the screws are double-round or single-round, and the measurement of the thickness of the quenched layer on the surface is very complicated. As a round surface, its diameter Very small, the measurement process is difficult to control, the thickness of the quenched layer is only a few millimeters or less, and the measurement accuracy is difficult to guarantee, so it is necessary to develop an ultrasonic device for measuring the thickness of the quenched layer on the surface of the screw

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