Microminiature machining cutting force real-time wireless detection and control system

Abstract

The invention provides a microminiature machining cutting force real-time wireless detection and control system. A force sensor of the system collects an mN-level cutting force applied on a work-piece, and converts the force signal to an electric signal to be outputted to a signal processing module a and to be outputted to a signal processing module b through a wireless transmission module and a wireless receiving module, a controller converts the received electric signal to the cutting force and compares the cutting force with a standard cutting force so as to generate a control order to be outputted to a micro-motion platform, the micro-motion platform adjusts micro displacement of a milling main shaft respectively in an x-axis direction, a y-axis direction and a z-axis direction according to the control order, and further controls a milling cutter to realize the adjustment of the micro displacement, so that the real-time adjustment of cutting parameters can be realized, and the real-time control on the cutting force can be realized. The cutting force is detected through a six-dimensional force sensor and is transmitted to the controller through the wireless module, and further different cutting parameters are controlled, so that the real-time detection and control of the cutting force are realized, and thereby the machining precision and the surface quality of a precise and micro complicated structural member can be improved.

Description

technical field [0001] The invention relates to a real-time wireless detection and control system of cutting force for micro-machining, in particular for real-time detection and control of cutting force in the process of high-precision machining of precision micro-complicated structural parts, and belongs to the technical field of precision machinery manufacturing. Background technique [0002] With the development of aviation, aerospace, military, medical and other industries, the demand for precision micro-complex structural parts is increasing. Turn-milling composite processing is especially suitable for the processing of such structural parts due to its unique advantages. In the process of high-speed turn-milling compound machining, real-time monitoring and control of cutting force plays an important role in improving the machining accuracy and surface quality of parts. [0003] At present, there is no millinewton-level cutting force detection and control system and rela...

AI Technical Summary

Problems solved by technology

[0003] At present, there is no millinewton-level cutting force detection and control system and related devices that can be applied to high-speed turning-milling composite processing. Most of the existing cutting force detection methods are still in the experimental research stage, and their application is very limited. In single processing methods such as turning, milling, and drilling, for example: in turning processing, the strain gauge is usually attached to the turning tool; The measured force signal is transmitted for processing

For the measurement of the cutting force in the above-mentioned turning process, since the stiffness of the turning tool is usually much greater than that of the workpiece, a large cutting force is required to deform the tool, and this will cause the sensitivity of the sensor to be too low

Similarly, for the measurement of cutting force in milling or drilling, since the weight of the workpiece clamping device itself is relatively large, a sensor with a large range is also required, and the force measurement accuracy will also be affected

[0004] In addition, in the combined turning and milling machining, the turning spindle and the milling spindle move together, so the above methods cannot be applied to the detection of cutting force in the turning and milling combined machining, the main reason is that the cable is entangled after the sensor is fixedly installed question

At the same time, the cutting force is relatively small in the process of machining precision micro-complex structural parts. General sensors cannot achieve high-precision measurement of cutting force in this process. To use high-precision sensors, the installation position needs to be reconsidered.

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