Method and device for measuring thickness of numerical control machining workpiece

Abstract

The invention discloses a method and a device for measuring thickness of a numerical control machining workpiece and is suitable for online thickness measurement in the numerical control machining process. The measuring method comprises the following steps of: manufacturing a circular groove for storing a coupling agent on a blank, setting detection points, extracting coordinates of the detection points, planning a detection path, and generating a numerical control program; transmitting the numerical control program to a numerically-controlled machine tool, controlling the machine tool to move, and automatically triggering an ultrasonic probe to measure through a terminal processor once the machine tool moves to a point; and finally, transmitting the measuring data to the terminal processor. The thickness measuring device consists of a knife handle connecting device, an ultrasonic probe, a data transmission line and a terminal processor, wherein one end of the knife handle connecting device is connected with the ultrasonic probe; the other end of the knife handle connecting device is connected with the knife handle of a machine tool spindle, so that numerical control motion of the probe is realized; and the terminal processor can be a personal computer (PC) of a numerical control system and can be connected with the PC of the numerical control system. By the method and the device, the thickness of the numerical control machining workpiece is automatically measured on line, and the thickness measuring efficiency is greatly improved.

Description

technical field [0001] The invention relates to a machining measurement method and a measurement device, in particular to an automatic on-line thickness detection method and device for a numerically controlled machining part, specifically a method and a device for measuring the thickness of a numerically controlled workpiece. Background technique [0002] For large parts such as aircraft structural parts, due to their complex structure, large size and thin-walled parts, they are easily deformed during processing and the thickness is difficult to guarantee. For aircraft structural parts, its thickness has a great influence on the quality and weight of parts, so thickness detection during processing is extremely important. Similarly, there are similar problems for large parts that require CNC machining such as aviation, aerospace vehicles, ships, etc. with similar characteristics. For the thickness detection of these parts, on the one hand, online detection is required, and o...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low efficiency of thickness detection of workpieces in CNC machining and difficulty in realizing online thickness detection, and to invent a method and device capable of realizing automatic online thickness detection of CNC machining

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