JPS6420940A - Reamer bolt extracting device - Google Patents

Reamer bolt extracting device

Info

Publication number
JPS6420940A
JPS6420940A JP17486187A JP17486187A JPS6420940A JP S6420940 A JPS6420940 A JP S6420940A JP 17486187 A JP17486187 A JP 17486187A JP 17486187 A JP17486187 A JP 17486187A JP S6420940 A JPS6420940 A JP S6420940A
Authority
JP
Japan
Prior art keywords
reamer bolt
temperature difference
cooling hole
diaphragm valve
reamer
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.)
Granted
Application number
JP17486187A
Other languages
Japanese (ja)
Other versions
JPH0565294B2 (en
Inventor
Hiroo Iwase
Kiyoaki Suzuki
Ryoichi Kaneko
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP17486187A priority Critical patent/JPS6420940A/en
Publication of JPS6420940A publication Critical patent/JPS6420940A/en
Publication of JPH0565294B2 publication Critical patent/JPH0565294B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/06—Screw or nut setting or loosening machines
    • B23P19/067—Bolt tensioners
    • B23P19/068—Bolt tensioners by using heating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
    • B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
    • B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
  • Gripping On Spindles (AREA)

Abstract

PURPOSE:To enable a reamer bolt to be extracted quickly, easily and without any possibility of damaging it by shrinking the reamer bolt thermically by means of supplying low temperature fluid to circulate through a cooling hole provided along the center line of the reamer bolt. CONSTITUTION:A cooling hole 9 is drilled on a reamer bolt 5 along its center line. Liquid nitrogen 10 is introduced to a manifold 18 through a diaphragm valve 12 while compressed air 11 is introduced to the manifold 18 through a diaphragm valve 22 and the mixed gas is introduced into the cooling hole 9. The mixing ratio is regulated by controlling the diaphragm valve 22 with an air transmitter 21 based on signals from thermocouples 19, 13 and the established value becomes the temperature difference between the reamer bolt 5 and the mixed gas detected by a temperature difference detector 20. As a result of comparison of the signals of thermocouples 14, 13 with a temperature difference detector 15, a signal 17 actuates to close the diaphragm valves 12, 22 with an air transmitter 16 when the temperature difference reaches the value which causes the fitting of the reamer bolt 5 to become loose.
JP17486187A 1987-07-15 1987-07-15 Reamer bolt extracting device Granted JPS6420940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17486187A JPS6420940A (en) 1987-07-15 1987-07-15 Reamer bolt extracting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17486187A JPS6420940A (en) 1987-07-15 1987-07-15 Reamer bolt extracting device

Publications (2)

Publication Number Publication Date
JPS6420940A true JPS6420940A (en) 1989-01-24
JPH0565294B2 JPH0565294B2 (en) 1993-09-17

Family

ID=15985937

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17486187A Granted JPS6420940A (en) 1987-07-15 1987-07-15 Reamer bolt extracting device

Country Status (1)

Country Link
JP (1) JPS6420940A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2666879A1 (en) * 1990-09-19 1992-03-20 Framatome Sa METHOD FOR REPLACING A TUBE OF A RIGHT TUBE HEAT EXCHANGER AND USE OF THIS METHOD.
CN102513778A (en) * 2011-11-23 2012-06-27 广州文冲船厂有限责任公司 Method for taking out bolt without damaging bolt hole
JP2021079544A (en) * 2021-03-02 2021-05-27 大成建設株式会社 Cutting method of metallic component

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5037343A (en) * 1973-06-14 1975-04-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5037343A (en) * 1973-06-14 1975-04-08

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2666879A1 (en) * 1990-09-19 1992-03-20 Framatome Sa METHOD FOR REPLACING A TUBE OF A RIGHT TUBE HEAT EXCHANGER AND USE OF THIS METHOD.
CN102513778A (en) * 2011-11-23 2012-06-27 广州文冲船厂有限责任公司 Method for taking out bolt without damaging bolt hole
JP2021079544A (en) * 2021-03-02 2021-05-27 大成建設株式会社 Cutting method of metallic component

Also Published As

Publication number Publication date
JPH0565294B2 (en) 1993-09-17

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