Rotary dynamic milling torque measurement instrument

Abstract

A rotary dynamic milling torque measurement instrument comprises a milling tool, a tool handle, a power supply system and a signal transmission system; wherein the tool handle is integrated with a torque sensor which comprises a sensitive element directly processed on the tool handle, a resistance strain foil bond on the sensitive element and a signal correction circuit connected with the strain foil; the signal correction circuit amplifies and outputs the signals generated by the strain foil to the signal transmission system connected with the signal correction circuit; the signal transmission system receives the signals output by the signal correction circuit and transmits the signals in a wireless transmission way; the power supply system adopts an electromagnetic induction way to supply power for the sensor. The invention integrates the torque sensor in the tool handle, so that the tool handle is provided with the torque measurement function, simple structure and convenient manufacture; the sensor power supply of the invention ensures the power supply not to be influenced by the tool handle rotation; and the wireless signal transmission way of the invention can cause the signal receiving end to depart from the cutting area appropriately.

Description

technical field [0001] The invention belongs to the field of metal cutting and is mainly used for measuring the dynamic milling torque in the milling process in real time. Background technique [0002] The rotary dynamic milling torque measuring instrument is used to measure the dynamic milling torque. Generally speaking, two types of instruments can be used for the measurement of milling force / torque: bench-top dynamometer and rotary dynamometer [0003] 1. Benchtop dynamometer [0004] figure 1 It is a schematic diagram of the working principle of the desktop dynamometer: the desktop dynamometer 15 is installed on the milling machine table 16 (usually connected by T-shaped bolts), and the workpiece 14 to be cut is installed on the desktop dynamometer 15 (generally connected by bolts) , during milling, the ordinary milling cutter holder 13 is installed on the milling machine spindle 11 (through the taper surface), the milling cutter 12 is installed on the ordinary milling...

AI Technical Summary

Problems solved by technology

[0005] The main disadvantage of the bench dynamometer is: since the workpiece is installed on the bench dynamometer, the size of the installed workpiece is limited, and the measurement results will have errors when the cutting force acts on different positions of the workpiece

[0008] The advantages of the rotary dynamometer are: the tool handle (actually the tool) has the force / torque function, and is not affected by the size and shape of the workpiece, and the position of the cutting force point relative to the sensor can remain unchanged; the disadvantages Because the force / torque sensor is integrated in the tool holder, the structure of the tool holder becomes complicated

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