JPS55101305A - Preventing device for breaking of drill - Google Patents

Preventing device for breaking of drill

Info

Publication number
JPS55101305A
JPS55101305A JP793579A JP793579A JPS55101305A JP S55101305 A JPS55101305 A JP S55101305A JP 793579 A JP793579 A JP 793579A JP 793579 A JP793579 A JP 793579A JP S55101305 A JPS55101305 A JP S55101305A
Authority
JP
Japan
Prior art keywords
torque
drill
breaking
worked
spindle unit
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
JP793579A
Other languages
Japanese (ja)
Inventor
Shinichi Oota
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.)
Howa Machinery Ltd
Original Assignee
Howa Machinery Ltd
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 Howa Machinery Ltd filed Critical Howa Machinery Ltd
Priority to JP793579A priority Critical patent/JPS55101305A/en
Publication of JPS55101305A publication Critical patent/JPS55101305A/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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/04—Arrangements preventing overload of tools, e.g. restricting load

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)

Abstract

PURPOSE:To prevent a drill from breaking by a method wherein even minute change of cutting torque applied to the drill can accurately by detected and the application of torque not less than set torque is obviated by the detecting signals. CONSTITUTION:A gun drill 5, etc. are revolved at superhigh speed (for example, ten thousands-twenty thousands revolution/minute) by means of a drive motor 6, a spindle unit 2 is moved by means of a feed motor 3, and a body 8 to be worked is worked by means of the drills. Torque working to the gun drill 5 is beforehand set by means of a plate spring 27. When torque exceeds the set value, slip revolution takes place, and the rotation of the gun drill 5 is suspended. The spindle unit 2 is simultaneously feed-stopped or backward-fed by the detecting signals of a photoelectric switch 37. Torque not less than set torque is not forcedly applied to the drill, and breaking is prevented.
JP793579A 1979-01-25 1979-01-25 Preventing device for breaking of drill Pending JPS55101305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP793579A JPS55101305A (en) 1979-01-25 1979-01-25 Preventing device for breaking of drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP793579A JPS55101305A (en) 1979-01-25 1979-01-25 Preventing device for breaking of drill

Publications (1)

Publication Number Publication Date
JPS55101305A true JPS55101305A (en) 1980-08-02

Family

ID=11679363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP793579A Pending JPS55101305A (en) 1979-01-25 1979-01-25 Preventing device for breaking of drill

Country Status (1)

Country Link
JP (1) JPS55101305A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59132710U (en) * 1983-02-25 1984-09-05 日野自動車株式会社 Drill breakage prevention device
EP0093558B1 (en) * 1982-04-23 1985-12-18 Kakino, Yoshiaki, Dr. Apparatus for detecting a likely abnormality of the cutting tool beforehand
JPS6219109U (en) * 1985-07-15 1987-02-04
CN109940202A (en) * 2019-04-15 2019-06-28 德州德隆(集团)机床有限责任公司 A kind of drill gun processing overload protection arrangement and its assembly method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0093558B1 (en) * 1982-04-23 1985-12-18 Kakino, Yoshiaki, Dr. Apparatus for detecting a likely abnormality of the cutting tool beforehand
JPS59132710U (en) * 1983-02-25 1984-09-05 日野自動車株式会社 Drill breakage prevention device
JPS6219109U (en) * 1985-07-15 1987-02-04
CN109940202A (en) * 2019-04-15 2019-06-28 德州德隆(集团)机床有限责任公司 A kind of drill gun processing overload protection arrangement and its assembly method
CN109940202B (en) * 2019-04-15 2024-05-07 德州德隆(集团)机床有限责任公司 Overload protection device for gun drill machining and assembly method thereof

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