JPS5621748A - Contact detector - Google Patents

Contact detector

Info

Publication number
JPS5621748A
JPS5621748A JP9592079A JP9592079A JPS5621748A JP S5621748 A JPS5621748 A JP S5621748A JP 9592079 A JP9592079 A JP 9592079A JP 9592079 A JP9592079 A JP 9592079A JP S5621748 A JPS5621748 A JP S5621748A
Authority
JP
Japan
Prior art keywords
brush
main shaft
contacting
resistance
increase
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9592079A
Other languages
Japanese (ja)
Inventor
Hideo Nishimura
Isamu Yokoe
Kaoru Owa
Kunihiko Eto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyoda Koki KK
Original Assignee
Toyoda Koki KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyoda Koki KK filed Critical Toyoda Koki KK
Priority to JP9592079A priority Critical patent/JPS5621748A/en
Publication of JPS5621748A publication Critical patent/JPS5621748A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, 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
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
    • B23Q17/2233—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work for adjusting the tool relative to the workpiece
    • B23Q17/2241—Detection of contact between tool and workpiece

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Sensing Apparatuses (AREA)

Abstract

PURPOSE: To detect increase in the contacting resistance between the first brush and a main shaft by providing the second brush which is designed to contact the main shaft besides the first brush which is contacted with the main shaft for contact detecting.
CONSTITUTION: The second brush 20 is mounted on the back surface of a column 12 through an insulating plate 19 and is connected with a power source +Vcc through a resistance R1 in an abnormality discriminating circuit 2. The column 12 is connected with an earth of the circuit 2, and the electricity flows from the power source +Vcc to the earth through the second brush 20, the main shaft 13, and the first brush 16. Being thus constituted, the electricity potential of a contacting point P of the resistsnce R1 and the second brush 20 values corresponding to the contacting resistance between the second brush 20 and the first brush 16 and the main shaft 13, and the increase in the electric potential at the contacting point P being accompanied by the increase in the contacting resistance is detected by a comparator 21 to output abnormal signal ABS.
COPYRIGHT: (C)1981,JPO&Japio
JP9592079A 1979-07-26 1979-07-26 Contact detector Pending JPS5621748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9592079A JPS5621748A (en) 1979-07-26 1979-07-26 Contact detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9592079A JPS5621748A (en) 1979-07-26 1979-07-26 Contact detector

Publications (1)

Publication Number Publication Date
JPS5621748A true JPS5621748A (en) 1981-02-28

Family

ID=14150707

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9592079A Pending JPS5621748A (en) 1979-07-26 1979-07-26 Contact detector

Country Status (1)

Country Link
JP (1) JPS5621748A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5924947A (en) * 1982-07-28 1984-02-08 Niigata Eng Co Ltd Contact detecting device
WO2015136075A3 (en) * 2014-03-14 2015-11-26 Werner Kluft Device and method for measuring and monitoring tools

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5924947A (en) * 1982-07-28 1984-02-08 Niigata Eng Co Ltd Contact detecting device
WO2015136075A3 (en) * 2014-03-14 2015-11-26 Werner Kluft Device and method for measuring and monitoring tools
CN106255572A (en) * 2014-03-14 2016-12-21 山特维克工具德国有限公司 For measuring and monitor the apparatus and method of cutter
JP2017515697A (en) * 2014-03-14 2017-06-15 サンドビック ツーリング ドイチュラント ゲーエムベーハー Devices and methods for measuring and monitoring tools
US10105809B2 (en) 2014-03-14 2018-10-23 Sandvik Tooling Deutschland Gmbh Device and method for measuring and monitoring tools

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