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.)
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co LtdfiledCriticalToshiba Corp
Priority to JP40981ApriorityCriticalpatent/JPS57114306A/en
Publication of JPS57114306ApublicationCriticalpatent/JPS57114306A/en
PURPOSE: To minimize the torsion of boring bar of a large-diameter boring machine and improve its machining accuracy, by synchronously driving two spindle heads provided at both the ends of the boring bar.
CONSTITUTION: Headstocks 1 are provided at both the ends of a boring bar 4 so that the headstocks can be moved back and forth on pedestals 6. Two spindle heads are thus built.
COPYRIGHT: (C)1982,JPO&Japio
JP40981A1981-01-071981-01-07Boring machine with two-head drive
PendingJPS57114306A
(en)