Title:
MACHINE TOOL CONTROL DEVICE AND MACHINE TOOL CONTROL METHOD FOR CONTROLLING SYNCHRONOUS OPERATION OF SPINDLE AND FEED ROD
Document Type and Number:
Japanese Patent JP2017030061
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To shorten cycle time by controlling a spindle to fulfill an acceleration capability thereof to a maximum extent with a simple configuration in a machine tool performing tapping by synchronous operation of the spindle and a feed rod.SOLUTION: A spindle control unit 18 comprises: an initial operation control unit 30 controlling a spindle 12 to accelerate and rotate at a maximum capability from a machining start position with a maximum rotation velocity V0 set as a target value; a maximum acceleration detection unit 32 detecting a maximum acceleration A0 of the spindle 12 during accelerating rotation; a remaining rotational quantity detection unit 34 detecting a remaining rotational quantity of the spindle 12 from a current position to a target screw depth; a current velocity detection unit 36 detecting a current velocity Vc of the spindle 12; a positioning operation control unit 38 controlling the spindle 12 to decelerate and rotate after the accelerating rotation to reach the target screw depth; and an overrun amount detection unit 40 detecting an overrun amount Ov of the spindle 12 relative to the target screw depth during decelerating rotation.SELECTED DRAWING: Figure 1
Inventors:
MORITA YUKI
OKITA HAJIME
TAJIMA DAISUKE
OKITA HAJIME
TAJIMA DAISUKE
Application Number:
JP2015149535A
Publication Date:
February 09, 2017
Filing Date:
July 29, 2015
Export Citation:
Assignee:
FANUC LTD
International Classes:
B23Q15/00; B23G1/02; B23G1/16; G05B19/18
Domestic Patent References:
| JP4014485B2 | 2007-11-28 | |||
| JP2003181722A | 2003-07-02 | |||
| JP2006315094A | 2006-11-24 |
Attorney, Agent or Firm:
Atsushi Aoki
Tetsuro Shimada
Shinji Mitsuhashi
Hirose Shigeki
Kazuo Maejima
Masahiro Tahara
Tetsuro Shimada
Shinji Mitsuhashi
Hirose Shigeki
Kazuo Maejima
Masahiro Tahara