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Vibration cutting device and contact detection program

A vibrating device and vibrating cutting technology, which is applied in the direction of automatic control devices, measuring/indicating equipment, manufacturing tools, etc., can solve the problems of high cost and difficulty in accurately measuring the position of the tool tip

Active Publication Date: 2022-06-03
NAT UNIV CORP TOKAI NAT HIGHER EDUCATION & RES SYST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the past, the position of the tool nose of the cutting tool has been measured by adding a measuring device to the cutting device, but the cost is high, and there are problems as follows: If there is a change, it is difficult to accurately measure the position of the tool tip

Method used

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  • Vibration cutting device and contact detection program
  • Vibration cutting device and contact detection program
  • Vibration cutting device and contact detection program

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0127] Figure 11 It is a diagram for explaining a method of determining the relative positional relationship between the cutting tool and the center of rotation of the workpiece. Hereinafter, a method of calculating the rotation axis center A(x, y) of the workpiece 6 will be described. In this example, the workpiece 6 is in a state after one turning process. It should be noted that, from the viewpoint of preventing chipping of the sharp tool cutting edge, the workpiece 6 is preferably rotated by the spindle 2a, but the workpiece 6 may not be rotated.

[0128] First, the movement control unit 30 slowly moves the tip of the tool from the bottom to the top (positive direction of the Y axis) at P 1 The point is in contact with the turned material 6 to be cut. It should be noted that P 1 The coordinate x of the point in the X-axis direction 1 is set in advance, and the coordinates in the Y-axis direction are variables. Contact detection can be performed by the vibration cont...

Embodiment 2

[0194] In the first embodiment, the positional relationship derivation unit 28 detects the contact of the cutting tool 11 with the workpiece 6 after turning, and specifies the contact position. In Embodiment 2, the positional relationship deriving unit 28 may detect the contact of the cutting tool 11 with a reference surface provided on the component on which the workpiece 6 is mounted to determine the relative position of the cutting tool 11 with respect to the component reference surface. As an example of a component, for example, the main shaft 2a supporting the workpiece 6 may be used. By making the cutting tool 11 contact the reference surface provided on the end surface and the peripheral surface of the main shaft 2a, the positional relationship derivation unit 28 determines the cutting tool 11 and the main shaft 2a. The relative positional relationship between the cutting tool 11 and the mounting surface, the center of rotation, etc. of the workpiece 6 can be derived.

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Embodiment 3

[0205] In Embodiment 1, the control unit 20 determines the relative positional relationship between the cutting tool 11 and the rotation center of the workpiece 6 based on the coordinate values ​​of three points on the workpiece 6 after turning, in other words, pre-processing. In Embodiment 3, the control unit 20 determines the relative positional relationship between the cutting tool 11 and the object with a known shape by using an object with a known shape processed with high precision for setting the origin of the tool nose, thereby determining Information related to the tip of the cutting tool 11 . Hereinafter, an object used to specify information on the cutting edge of the cutting tool 11 is referred to as a "reference block". The control unit 20 identifies (identifies) the position of the tool edge by bringing the tool tip of the cutting tool 11 into contact with the reference block. Therefore, as a premise, at least the shape of the reference block to be contacted is g...

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PUM

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Abstract

A movement control unit (30) controls a feed mechanism (7) that moves the vibration device (10) relative to a workpiece. A vibration control unit (21) controls vibration of piezoelectric elements (12l), (12b) of a vibration device (10). A vibration control unit (21) acquires a status value indicating a vibration control status, and detects contact of the cutting tool (11) with a workpiece or the like based on a change in the status value. A vibration control unit (21) acquires at least one of energy consumption required for vibration and resonance frequency as a status value. The vibration control unit (21) determines the relative positional relationship between the cutting tool (11) and the rotation center of the material to be cut based on the coordinate values ​​of at least two contact positions.

Description

[0001] This application is based on Japanese Invention Patent Application No. 2017-164699 filed on August 29, 2017, the benefit of priority is claimed, and the entire content of this patent application is incorporated into this specification by reference. technical field [0002] The present disclosure relates to a vibration cutting device that cuts a material to be cut (work) while vibrating a tool. Background technique [0003] In recent years, there has been a demand for precise cutting of various workpieces. Patent Document 1 discloses a cutting device including a vibrating device for elliptical vibration of a cutting edge of a cutting tool with respect to a workpiece, and the cutting device can perform precise micromachining of iron-based materials and brittle materials. [0004] (Prior art literature) [0005] (patent documents) [0006] Patent Document 1: Japanese Patent Laid-Open No. 2008-221427 Contents of the invention [0007] (problem to be solved by the inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q17/22B23Q17/12B23B1/00
CPCB23B1/00B23Q15/013B23Q17/12B23Q17/22B26D7/086B23Q2705/102B23Q2716/00
Inventor 社本英二郑弘镇早坂健宏浜田晴司
Owner NAT UNIV CORP TOKAI NAT HIGHER EDUCATION & RES SYST