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1. 发明专利

JPH032601B2 失效
公开(公告)号：JPH032601B2
公开(公告)日：1991-01-16
申请号：JP13538682
申请日：1982-08-03
申请人： HITACHI SEIKI KK , NIPPON KOKAN KK
发明人： UCHIDA YOSHIRO , WATANABE JIRO , MASUDA MASAMI , TAKAHASHI NOBORU
IPC分类号： B23B3/26 , B23B5/16 , B23B29/034 , B23G1/22

2. 发明专利

JPH02139118A THREAD CUTTING MACHINE 失效
公开(公告)号：JPH02139118A
公开(公告)日：1990-05-29
申请号：JP28847488
申请日：1988-11-15
申请人： HITACHI SEIKI KK
发明人： NISHIKAWA AKIHIRO , MASUDA MASAMI , MURAKAMI YOSHIHIKO
IPC分类号： B23G1/22
摘要： PURPOSE:To aim at the promotion of efficiency for thread cutting by installing an inner support supporting an inner wall of a work equally, plural numbers of first sliders slidably in parallel with the sliding direction of a saddle and plural numbers of second sliders being installed in these first sliders, making a right angle with the sliding direction and sliding in the spindle axial direction and, what is more, holding a threading tool, respectively. CONSTITUTION:A pipe W is inserted into a spindle 41 in a head 35, and carried in up to a specified position proximate to a machining part 2. If so, an inner support 30 in a body 15 is advanced forward and inserted into an inner diameter of the pipe W, while a presser of the inner support 30 is stretched out, performing centering of the pipe, and simultaneously it supports this pipe. In this state, the pipe is accurately held and fixed by compensate chucks 36, 36. Next, tool rests 20-23, which are made so as to get taper threading performed by constolling each feed rate of these tool rests 20-23 and each opening quantity of cross slides 27a-27d and threading tools 28a-28d, in advance, are driven by a servomotor 24, thus the taper threading or the like is performed on the pipe W.

3. 发明专利

JPH07214403A FACING HEAD 失效
公开(公告)号：JPH07214403A
公开(公告)日：1995-08-15
申请号：JP2616394
申请日：1994-01-28
申请人： HITACHI SEIKI KK
发明人： MASUDA MASAMI , SHIBUYA YUJI
IPC分类号： B23Q37/00 , B23B3/26 , B23B5/00 , B23B19/02 , B23P23/02
摘要： PURPOSE:To select high-speed rotation for a tool of small diameter or low-speed rotation for a facing tool. CONSTITUTION:When hole machining such as drilling is done by using a third spindle 40, a central axial line of a second spindle 51 agrees with an axis of a third spindle 40. After this, a cylinder 48 is driven to operate a shifter 45 in order to make teeth of a shift gear 43 mesh with an internal tooth gear 50. A motor is actuated, a pulley is rotated, and the third spindle 40 is rotated at high speed to drive and rotate the internal tooth gear 50 and the second spindle 51. A tool Ta of small diameter is rotated in a housing 10 due to this drive.

4. 发明专利

JPH0350641B2 失效
公开(公告)号：JPH0350641B2
公开(公告)日：1991-08-02
申请号：JP4507384
申请日：1984-03-09
申请人： HITACHI SEIKI KK
发明人： MASUDA MASAMI , HOSOI OSAMU , SHIMAMURA YUZURU
IPC分类号： B23B1/00 , B23B5/00 , B23Q17/00 , B23Q17/22

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