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1. JP2022024542 - MACHINING MACHINE, MACHINING SYSTEM, AND MACHINING METHOD OF WORKPIECE

Office
Japan
Application Number 2020127195
Application Date 28.07.2020
Publication Number 2022024542
Publication Date 09.02.2022
Publication Kind A
IPC
B23Q 15/12
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL, CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
15Automatic control or regulation of feed movement, cutting velocity or position of tool or work
007while the tool acts upon the workpiece
12Adaptive control, i.e. adjusting itself to have a performance which is optimum according to a preassigned criterion
G05B 19/404
GPHYSICS
05CONTROLLING; REGULATING
BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
19Programme-control systems
02electric
18Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
404characterised by control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia
G05B 19/18
GPHYSICS
05CONTROLLING; REGULATING
BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
19Programme-control systems
02electric
18Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
B23Q 17/22
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL, CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
17Arrangements for indicating or measuring on machine tools
22for indicating or measuring existing or desired position of tool or work
CPC
G05B 19/18
GPHYSICS
05CONTROLLING; REGULATING
BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
19Programme-control systems
02electric
18Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
B23Q 15/12
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING
15Automatic control or regulation of feed movement, cutting velocity or position of tool or work
007while the tool acts upon the workpiece
12Adaptive control, i.e. adjusting itself to have a performance which is optimum according to a preassigned criterion
G05B 19/404
GPHYSICS
05CONTROLLING; REGULATING
BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
19Programme-control systems
02electric
18Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
404characterised by control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia
B23Q 17/22
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING
17Arrangements for ; observing,; indicating or measuring on machine tools
22for indicating or measuring existing or desired position of tool or work
Applicants SHIBAURA MACHINE CO LTD
芝浦機械株式会社
Inventors AKIYAMA TAKANOBU
秋山 貴信
FUKUDA MASAHIKO
福田 将彦
KAKUHARI KATSUJI
覚張 勝治
Agents 飯島 康弘
Title
(EN) MACHINING MACHINE, MACHINING SYSTEM, AND MACHINING METHOD OF WORKPIECE
(JA) 加工機、加工システム及び被加工物の製造方法
Abstract
(EN)

PROBLEM TO BE SOLVED: To reduce a machining error in relation to straightness.

SOLUTION: In a machining machine 1, an X-axis control unit 33X performs a feedback control of the position of an X-axis table 9X in the X direction in every control period Tc. A Z-axis control unit 33Z includes: acquiring a nearby detection value of the position of a Z-axis table 9Z in the Z direction in every control period Tc; calculating a second deviation based on the difference between the acquired detection value and a target position; and controlling a Z-axis drive source 23Z so as to reduce the second deviation. The Z-axis control unit 33Z also includes: acquiring a nearby detection value of a first error that is a deviation of the X-axis table 9 in the Z direction in every control period Tc; and increasing or decreasing the second deviation according to the detection value of the first error so that at least part of the relative position error between a workpiece 103 and a tool 101 in the Z direction caused by the first error is eliminated by a movement of the Z-axis table 9Z along in the Z direction.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2022,JPO&INPIT


(JA) 【課題】真直度に起因する加工誤差を低減する。
【解決手段】加工機1において、X軸制御部33Xは、制御周期Tc毎に、X軸テーブル9XのX方向における位置のフィードバック制御を行う。Z軸制御部33Zは、制御周期Tc毎に、Z軸テーブル9ZのZ方向の位置の間近の検出値を取得し、その取得した検出値と目標位置との差に基づいて第2偏差を算出し、第2偏差を縮小するようにZ軸駆動源23Zを制御する。Z軸制御部33Zは、制御周期Tc毎に、X軸テーブル9のZ方向における変位である第1誤差の間近の検出値を取得し、第1誤差に起因するワーク103と工具101とのZ方向における相対位置の誤差の少なくとも一部がZ軸テーブル9ZのZ方向の移動によって打ち消されるように、第1誤差の検出値に基づいて第2偏差を増加又は減少させる。
【選択図】図1

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