Title:
MACHINING TOOL AND WORKPIECE MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2019/146335
Kind Code:
A1
Abstract:
According to the present invention, the accuracy of measuring the diameter of a workpiece is improved. This machining tool is provided with: a displacement sensor which is mounted on at least one among a guide bush that supports, at the front of a main shaft, a workpiece held by the main shaft, or a support part that supports the main shaft; a calculation unit which calculates the diameter of the workpiece after machining on the basis of a measurement value by the displacement sensor for the workpiece after the machining. The main shaft can be moved forward and backward in the shaft direction, moves, to a prescribed position obtained by a measurement of the displacement sensor in the shaft direction, a part to be machined of the workpiece displaced due to the withdrawal of the main shaft after machining of the workpiece, and performs, by means of the displacement sensor, a measurement on the part to be machined of the workpiece after the movement.
Inventors:
KAKU NORIO (JP)
Application Number:
PCT/JP2018/047192
Publication Date:
August 01, 2019
Filing Date:
December 21, 2018
Export Citation:
Assignee:
STAR MFG CO (JP)
International Classes:
B23B25/06; B23B13/12; B23Q17/00; B23Q17/20
Foreign References:
| JPH073902U | 1995-01-20 | |||
| JP2003136368A | 2003-05-14 | |||
| JP2004090170A | 2004-03-25 | |||
| JPS61125705A | 1986-06-13 | |||
| JP2002052445A | 2002-02-19 | |||
| JPS62130156A | 1987-06-12 | |||
| JP4865490B2 | 2012-02-01 | |||
| JP3901290B2 | 2007-04-04 |
Other References:
See also references of EP 3715025A4
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