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4. 发明专利

JPH06170603A GUIDE BAR PIPE FOR AUTOMATIC LATHE 失效
公开(公告)号：JPH06170603A
公开(公告)日：1994-06-21
申请号：JP32204192
申请日：1992-12-01
申请人： SAMEKA SA
发明人： MARUKUSU GAIZERU
IPC分类号： B23B13/02 , B23B13/08
摘要： PURPOSE: To perform machining of a bar having diameter in a wide range, to suppress floating of a rotating bar, to prevent the occurrence of inaccuracy of a product occasioned by floating, and to execute high-speed rotation of a bar through suppression of the generation of noise to a low value. CONSTITUTION: A guide bar pipe 1 has a center setting travel base 10. The travelbase 10 is distributed in two parallel planes, and a ball is provided to fix the travelbase 10 at the guide bar pipe 1 or at the rod 11 of a feed piston. This constitution operates a feed piston 2 to advance a rod material to a lathe and draw the piston 2 to the rear of a device through a vacuum. The presence of the travelbase 10 normally loaded on the rod 11 of the feed piston prevents the occurrence of a risk of a rod material in the guide bar pipe 1 and the feed rod 11 being buckled and floated. This constitution considerably increases the number of revolutions of a rod and eminently decreases the generation of noise.

5. 发明专利

JPS6420903A DEVICE FOR GUIDING BAR FOR AUTOMATIC LATHE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPS6420903A
公开(公告)日：1989-01-24
申请号：JP15597188
申请日：1988-06-23
申请人： SAMEKA SA
发明人： MARUKUSU GAISAA , KUROODO BANDEBOWAARU
IPC分类号： B23B13/02 , B23B13/12
摘要： PURPOSE: To attain accurate matching to a head stock of a lathe by forming a cylindrical body serving as a guide device for a bar to be machined, by extrusion, and providing a double hydrodynamic bearing. CONSTITUTION: This device is constituted including a cylindrical body 1. This cylindrical body 1 has a length equal to the length of a bar B to be machined and includes a plurality of cylindrical spaces 2-5, and triangular spaces 6-9 are formed between these cylindrical spaces 2-5. The device further comprises a suitable means for increasing moment of inertia which results in heightening stability. Each of the cylindrical spaces 2-5 forms an oil distribution channel 11 over the whole length so as to soak the bar B while forming a dynamic bearing. The cylindrical body 1 is basically formed by extrusion as one part piece with the same length as the bar B.

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