JPS645745A - Multishaft thread fastening device - Google Patents

Multishaft thread fastening device

Info

Publication number
JPS645745A
JPS645745A JP16071087A JP16071087A JPS645745A JP S645745 A JPS645745 A JP S645745A JP 16071087 A JP16071087 A JP 16071087A JP 16071087 A JP16071087 A JP 16071087A JP S645745 A JPS645745 A JP S645745A
Authority
JP
Japan
Prior art keywords
detecting
completion
shafts
motor
rotation
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
JP16071087A
Other languages
Japanese (ja)
Other versions
JPH0478422B2 (en
Inventor
Masatomo Adachi
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.)
Nitto Seiko Co Ltd
Original Assignee
Nitto Seiko Co 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 Nitto Seiko Co Ltd filed Critical Nitto Seiko Co Ltd
Priority to JP16071087A priority Critical patent/JPS645745A/en
Publication of JPS645745A publication Critical patent/JPS645745A/en
Publication of JPH0478422B2 publication Critical patent/JPH0478422B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

PURPOSE:To hold all the shafts at a constant tightening torque by providing an all shaft tightening completion detecting part which generates a detecting signal for disconnecting supply of normal rotation voltage by actuating changing means when it receives a detecting signal from a rotation stoppage detecting means for each shaft. CONSTITUTION:If a driver bit 6 stops rotating, a detecting signal is generated from a rotation stoppage detecting means 30, and this condition is held until detecting signals are generated from rotation stoppage detecting means 30 for all the shafts regardless of time after completion of the first completion of tightening. If the detecting signals are generated form all the shafts, changing means 23 operate immediately to disconnect supply of normal rotation voltage to a motor 8. At this time, a cam disc is kept as it is locked by wedge action, and a driver bit outputs a value of a tightening torque. After that, a revere rotation voltage is supplied to the motor 8 for just a little time, so the motor 8 rotates reversely just a little until it stops, when a speed change ring returns to its original position.
JP16071087A 1987-06-26 1987-06-26 Multishaft thread fastening device Granted JPS645745A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16071087A JPS645745A (en) 1987-06-26 1987-06-26 Multishaft thread fastening device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16071087A JPS645745A (en) 1987-06-26 1987-06-26 Multishaft thread fastening device

Publications (2)

Publication Number Publication Date
JPS645745A true JPS645745A (en) 1989-01-10
JPH0478422B2 JPH0478422B2 (en) 1992-12-11

Family

ID=15720796

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16071087A Granted JPS645745A (en) 1987-06-26 1987-06-26 Multishaft thread fastening device

Country Status (1)

Country Link
JP (1) JPS645745A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5856739A (en) * 1981-09-26 1983-04-04 Nitto Seiko Co Ltd Multiple shaft screw fastener
JPS62166931A (en) * 1986-01-20 1987-07-23 Shinpo Kogyo Kk Automatic screw fastening machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5856739A (en) * 1981-09-26 1983-04-04 Nitto Seiko Co Ltd Multiple shaft screw fastener
JPS62166931A (en) * 1986-01-20 1987-07-23 Shinpo Kogyo Kk Automatic screw fastening machine

Also Published As

Publication number Publication date
JPH0478422B2 (en) 1992-12-11

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