Title:
NUMERICAL CONTROL UNIT
Document Type and Number:
Japanese Patent JP2018060242
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a numerical control unit capable of suppressing the operation from stopping during a movement operation corresponding to each of two consecutive operation commands by a simple method.SOLUTION: A numerical control unit of a machine tool outputs a distribution-speed for each sampling cycle on the basis of an instruction. The numerical control unit determines a delay time D3 from an end of an output of a previous distribution-speed based on a previous instruction until a start of an output of a later distribution-speed based on a later instruction. The numerical control unit waits for the delay time D3 after an end the output of the distribution-speed based on the previous instruction, and then starts the output of the distribution-speed based on the later instruction. The numerical control unit calculates a value by subtracting a value obtained by adding a first later time constant Tb1 and a second later time constant Tb2 based on the later instruction from a value obtained by adding a first previous time constant Ta1 and a second previous time constant Ta2 based on the previous instruction, that is (Ta1+Ta2)-(Tb1+Tb2) as the delay time D3.SELECTED DRAWING: Figure 4
Inventors:
ISHIKAWA TOMOYA
Application Number:
JP2016195039A
Publication Date:
April 12, 2018
Filing Date:
September 30, 2016
Export Citation:
Assignee:
BROTHER IND LTD
International Classes:
G05B19/416; B23Q15/00
Domestic Patent References:
| JP2016133988A | 2016-07-25 | |||
| JP2016133987A | 2016-07-25 | |||
| JP2009266011A | 2009-11-12 | |||
| JPH11102215A | 1999-04-13 | |||
| JPH07152419A | 1995-06-16 |
Foreign References:
| CN101211177A | 2008-07-02 |
Attorney, Agent or Firm:
Hisashi Yamamoto
Tomohiro Inayama
Tomohiro Inayama