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11. 发明专利

JPS63275853A GEAR FITTED WITH COLLAR 失效
公开(公告)号：JPS63275853A
公开(公告)日：1988-11-14
申请号：JP10828787
申请日：1987-04-30
申请人： KUBOTA LTD
发明人： SAITO TARO
IPC分类号： F16H55/17
摘要： PURPOSE:To attain a gear of less engagement noise so as to make it usable for high transmission as well by welding a collar, which is to strengthen the strength of a gear tooth, on the gear tooth formed by cutting work. CONSTITUTION:The gear tooth portion 8 of bevel gear 7 is given a polishing finish after forming it by cutting work with a gear cutting machine or the like. A collar 15 of a disc shape which in fitted on the outside an input shaft along the back contour of the gear 7 and in contact with the back of the gear 7, is to have a larger diameter than a deddendum circle diameter on the back side of the gear 7. The collar is to be welded to the back of the gear 7 from the A direction along the extended surface of the contact surface of the gear 7 and the collar 15 by an electron beam or a laser that do not heap up the welded portion toward the outside. The area of the welded surface 17 is to be a width (t) from the gear tooth surface to its inside. The gear tooth portion 8 of the gear 7 can be used for a high speed transmission since the engagement noise can be lowered by forming it highly precisely by cutting work and the entire can be made compactly since a gap B between the gear tooth porton 12 of a gear 11 and the collar 15 can be made small because the welding portion where the gear 7 and the collar 15 are welded together is not heaped up.

12. 发明专利

JPS6283480A BLADE BODY FOR WORK RELATED TO SOIL AND ITS MANUFACTURE 失效
公开(公告)号：JPS6283480A
公开(公告)日：1987-04-16
申请号：JP22560985
申请日：1985-10-08
申请人： KUBOTA LTD , ASAHI GLASS CO LTD
发明人： SAITO TARO , KATO TAIZO
IPC分类号： B22F7/04 , A01B33/10 , B22F8/00 , C23C24/02 , C23C24/06
摘要： PURPOSE:To manufacture a blade body fit for use for a long period by sticking powder having high hardness and wear resistance to the part of a base material to be hardened and by forcing the powder into the part to form a hardened layer. CONSTITUTION:Powder 3 having high hardness and wear resistance such as WC or TiN powder is stuck to both sides or one side of the part 2 of a black 1 to be hardened to form the edge of a blade body with a binder to a proper thickness. The blank 1 having the stuck powder 3 is made red-hot by heating in a heating furnace and the powder 3 is forced into the surface layers of the part 2 by rolling to form hardened layers 4. The resulting blank 5 for blade body is finished to the final shape of a blade body by forging, pressing or other means to obtain a product.

13. 发明专利

JPS627803B2 失效
公开(公告)号：JPS627803B2
公开(公告)日：1987-02-19
申请号：JP616380
申请日：1980-01-21
申请人： KUBOTA LTD
发明人： SAITO TARO , YONEDA YORIO
IPC分类号： E02F9/00 , A01B59/048 , E02F5/14 , F16H21/10

14. 发明专利

JPH01128702A CENTER-DRIVEN ROTARY DRIVING APPARATUS 失效
公开(公告)号：JPH01128702A
公开(公告)日：1989-05-22
申请号：JP28764087
申请日：1987-11-13
申请人： KUBOTA LTD
发明人： SAITO TARO
IPC分类号： A01B33/08 , F16H48/06 , F16H57/037 , F16H57/038 , F16H57/039
摘要： PURPOSE:To obtain the title apparatus able to be easily assembled and having excellent lateral weight balance, by using a driving unit composed of a supporting shaft, a bevel gear and a pair of right and left bearing supports and engaging the bevel gear with a bevel pinion from the right and left directions. CONSTITUTION:A driving unit 8 is composed of a supporting shaft 10, a bevel gear 11 and a pair of right and left bearing supports 14, 15. The bevel gear 11 is generated with a bevel pinion 2A from the right and left directions. The above driving unit is enclosed in an upper part of a transmission case 1 to obtain a center-drive rotary for normal or reverse rotation. When the driving unit is changed between the normal and the reverse rotations, it is firmly supported with supporting holes 16, 17 supporting the bearing supports 14, 15 inserted into the holes.

15. 发明专利

JPH0125932B2 失效
公开(公告)号：JPH0125932B2
公开(公告)日：1989-05-19
申请号：JP21814183
申请日：1983-11-18
申请人： KUBOTA LTD
发明人： MIHIRA KEIICHI , OOHASHI YOSHIMITSU , SAITO TARO , HIRATA KOKI , MATSUDAIRA KANAME
IPC分类号： A01B33/08 , F16H3/14 , F16H63/00 , F16H63/04 , F16H63/32

16. 发明专利

JPH0121921B2 失效
公开(公告)号：JPH0121921B2
公开(公告)日：1989-04-24
申请号：JP19501182
申请日：1982-11-06
申请人： KUBOTA LTD
发明人： SAITO TARO , UMEKI KAZUMI , OONO TAKAAKI , SAKANE HIROSHI , TSUJINO KIMIHIDE , MIHIRA KEIICHI , NAGAMINE YOSHIFUMI , SATO YOSHITAKA
IPC分类号： A01B33/10 , A01B33/02 , A01B33/14

17. 发明专利

JPS6284885A EDGE BODY FOR SOIL WORK OR THE LIKE AND ITS MANUFACTURE 失效
公开(公告)号：JPS6284885A
公开(公告)日：1987-04-18
申请号：JP22561085
申请日：1985-10-08
申请人： KUBOTA LTD , ASAHI GLASS CO LTD
发明人： SAITO TARO , KATO TAIZO
IPC分类号： B23K20/08 , A01B33/10 , B22F7/04 , B22F7/08 , B23K20/00 , B23K20/04 , E02F3/815
摘要： PURPOSE:To improve the wear resistance of an edge body and to reduce the manufacturing cost by forming a powder body having a high hardness and a high wear resistance, in the corresponding surfaces of a pair of base material steel plates, and subsequently, polymerizing and joining each powder layer by the means of rolling, forge welding, etc. CONSTITUTION:On an edge body manufacturing line, a hopper 7 containing a high hardness/high wear resistance powder body 8 is provided, and also a calcination furnace 9 is provided. By the calcination furnace 9, a base material 6 is brought to red heat at a high temperature, and also the powder body 8 is calcinated and a powder layer 10 is formed on the base material 6. Also, in other line of the same kind, a powder layer 10' formed by making a powder body 8' adhere onto a base material 6' is formed, and both powder layers 10, 10' of the materials 6, 6' are pressed strongly against a clad roller 12. According to this method, the powder layers 10, 10' are anchor-coupled firmly to each other, and an edge body base material A which are polymerized and joined strongly is obtained. Accordingly, the wear resistance of the edge body A is improved and the manufacturing cost can be reduced.

18. 发明专利

JPS6225901A PRODUCTION OF PLOWING PAWL 失效
公开(公告)号：JPS6225901A
公开(公告)日：1987-02-03
申请号：JP16545385
申请日：1985-07-25
申请人： KUBOTA LTD
发明人： SAITO TARO
IPC分类号： A01B33/10

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