JPS55144916A - Automatic drilling machine for fine hole - Google Patents

Automatic drilling machine for fine hole

Info

Publication number
JPS55144916A
JPS55144916A JP5278479A JP5278479A JPS55144916A JP S55144916 A JPS55144916 A JP S55144916A JP 5278479 A JP5278479 A JP 5278479A JP 5278479 A JP5278479 A JP 5278479A JP S55144916 A JPS55144916 A JP S55144916A
Authority
JP
Japan
Prior art keywords
drill
spindle
spring
breakage
actuated
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
JP5278479A
Other languages
Japanese (ja)
Inventor
Toshinori Tadakuma
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.)
CHIYODA SEIKI KK
Original Assignee
CHIYODA SEIKI 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 CHIYODA SEIKI KK filed Critical CHIYODA SEIKI KK
Priority to JP5278479A priority Critical patent/JPS55144916A/en
Publication of JPS55144916A publication Critical patent/JPS55144916A/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)
  • Automatic Control Of Machine Tools (AREA)
  • Drilling And Boring (AREA)

Abstract

PURPOSE:To prevent the drill breakage due to wearing of a drill and poor discharge of chips by retreating the drill unit detecting the increase in the torque during the drilling. CONSTITUTION:As the cutting torque increases to threat the breakage of a drill 1, released from the rotary charging of the spindle with the spring, the spindle 3 turns against the spring 4. Consequently, the limit switch 25 is actuated to switch the electromagnetic control valve 22 of the fluid pressure cylinder 21 whereby the drill unit is retreated until the drill 1 is withdrawn from the work. When the thrust resistance increases, the spindle 3 moves back against the spring 5 and the limit switch 27 is actuated to retreat the drill unit, thereby preventing the breakage of the drill.
JP5278479A 1979-04-28 1979-04-28 Automatic drilling machine for fine hole Pending JPS55144916A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5278479A JPS55144916A (en) 1979-04-28 1979-04-28 Automatic drilling machine for fine hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5278479A JPS55144916A (en) 1979-04-28 1979-04-28 Automatic drilling machine for fine hole

Publications (1)

Publication Number Publication Date
JPS55144916A true JPS55144916A (en) 1980-11-12

Family

ID=12924462

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5278479A Pending JPS55144916A (en) 1979-04-28 1979-04-28 Automatic drilling machine for fine hole

Country Status (1)

Country Link
JP (1) JPS55144916A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113478246A (en) * 2021-06-30 2021-10-08 浙江恒标阀门有限公司 Cutting equipment is used in processing of stop valve case

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113478246A (en) * 2021-06-30 2021-10-08 浙江恒标阀门有限公司 Cutting equipment is used in processing of stop valve case
CN113478246B (en) * 2021-06-30 2022-05-31 浙江恒标阀门有限公司 Cutting equipment is used in processing of stop valve case

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