Rotary dynamic milling torque measurement instrument

A rotary dynamic and torque measurement technology, used in measurement/indication equipment, metal processing mechanical parts, metal processing equipment, etc., can solve the problems of measurement results error, size limit, complex tool holder structure, etc.

CN101612712BInactive Publication Date: 2011-03-09TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2011-03-09
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Examples

Embodiment Construction

[0043] The present invention will be further described below in conjunction with the examples shown in the accompanying drawings. The rotary dynamic milling torque measuring instrument of the present invention comprises:

[0044] 1. Integrated torque sensor holder

[0045] This is the body of the rotary dynamometer, used to connect the rotary cutting dynamometer to the machine tool spindle (via the taper) and to mount the tool. See Figure 4, the conical shank of the integrated torque sensor shank complies with the BT50 national standard (GB / T 10944.1-2006), the elastic sensitive element 41 is directly processed on the shank, and then the resistance strain gauge 40 is pasted on the sensitive element to form an electric bridge. It is composed of two 45° dual resistance strain gauges, so that the torque sensor is directly integrated into the tool handle. The protective cover 42 is used to protect the strain gauge, and the screw 43 fixes the protective cover 42 on the handle 1...