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Cutting force measurement method based on two-point deformation of tool holder

A measurement method and cutting force technology, applied in measurement/indication equipment, metal processing machinery parts, metal processing equipment, etc., can solve problems such as poor practicability and achieve good practicability.

Active Publication Date: 2018-01-09
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of poor practicability of the existing cutting force measurement methods, the present invention provides a cutting force measurement method based on two-point deformation of the cutter bar

Method used

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  • Cutting force measurement method based on two-point deformation of tool holder
  • Cutting force measurement method based on two-point deformation of tool holder
  • Cutting force measurement method based on two-point deformation of tool holder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: Measuring the normal cutting force of the feed, the tool material is high speed steel.

[0026] (1) According to figure 1 The flow shown is for setting up the experimental equipment. Two lion CPL190 series capacitive displacement sensors are installed on the designated position of the cutter bar in the cutting force feed direction, and then connected with the supporting driver, data collector and computer, and then the two sensor probes are adjusted to the appropriate position, and the cutting force can be measured. Measurement. In order to verify the cutting force measurement method based on the two-point deformation of the cutter bar provided by the present invention, the Kistler9255B commercial dynamometer will also collect the cutting force at the same time for reference. The workpiece material is aluminum alloy 7050, the tool used is a 3-blade high-speed steel milling cutter, the tool diameter is 8mm, and the processing parameters are: the spindle s...

Embodiment 2

[0033] Embodiment 2: Measuring the normal cutting force of the feed, the tool material is cemented carbide.

[0034] (1) According to figure 1 The flow shown is for setting up the experimental equipment. Two Xiongshi CPL190 series capacitive displacement sensors are installed on the designated position of the cutter bar in the direction of cutting force feed, and then connected with the supporting driver, data collector and computer, and then the two sensor probes are adjusted to the appropriate position, and the cutting force can be measured. Measurement. In order to verify the cutting force measurement method based on the two-point deformation of the cutter bar provided by the present invention, the Kistler9255B commercial dynamometer will also collect the cutting force at the same time for reference. The workpiece material is aluminum alloy 7050, the tool used is a 4-blade carbide milling cutter, the tool diameter is 12mm, and the processing parameters are: the spindle sp...

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Abstract

The invention discloses a cutting force measuring method based on two-point deformation of a cutter rod. The cutting force measuring method is used for solving the technical problem that existing cutting force measuring methods are poor in practicability. According to the technical scheme, the cutting force measuring method comprises the steps that at first, two displacement sensor measuring points are selected in the vertical direction of the cutter rod, and the cutter rigidity is calculated through the theoretical knowledge of the material mechanics; then, displacement sensors are fixedly installed in the selected positions through a magnetic meter base and an auxiliary resin clamp, and the cutter rod upper measuring point deformation displacement and the cutter rod lower measuring point deformation displacement are collected; again, displacement signals collected by the two displacement sensors are subjected to data processing, cutter rod upper measuring point deformation and cutter rod lower measuring point deformation caused by the cutting force are obtained and then are subtracted, and the cutter rod lower end measuring point deformation quantity caused by the cutting force relative to the upper end measuring point deformation quantity is obtained; and finally, the cutting force can be indirectly obtained by combining and using the determined cutter rigidity. The cutting force measuring method based on two-point deformation of the cutter rod is suitable for high-speed steel, hard alloy and other various cutters, the cutting force in the feeding direction and the feeding normal direction can be accurately measured, and the practicability is good.

Description

technical field [0001] The invention relates to a cutting force measurement method, in particular to a cutting force measurement method based on two-point deformation of a cutter bar. Background technique [0002] Document 1 "Albrecht A, Park S S, Altintas Y, et al. High frequency bandwidthcutting force measurement in milling using capacitance displacement sensors. International Journal of Machine Tools and Manufacture, 2005, 45:993–1008." The cutting force measurement method, which indirectly obtains the cutting force by measuring the deformation of the spindle during the machining process with a capacitive displacement sensor. However, this method has problems such as the low transmission rate of deformation displacement from the tool nose point to the spindle, and the vibration of the spindle itself affects the measurement accuracy, which is not conducive to error separation. [0003] Document 2 "Zhu Jianmin, Wang Jian, Zhang Tongchao, etc. A dynamic milling force measur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q17/09
CPCB23Q17/0952
Inventor 万敏冯佳张卫红殷伟
Owner NORTHWESTERN POLYTECHNICAL UNIV