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1. 发明专利

JPS569125A CHAMFERING METHOD FOR END FACE OF GEAR 失效
公开(公告)号：JPS569125A
公开(公告)日：1981-01-30
申请号：JP8480379
申请日：1979-07-03
申请人： KOBE STEEL LTD
发明人： KUSAKABE YUUJI , TANIMOTO TATSUO , MARUMOTO YOSHITSUGU
IPC分类号： B23F19/10
摘要： PURPOSE:To chamfer efficiently and economically by conducting a generating cutting operation while imparting an amount of addendum modification for generation of an undercut to a hob relative to a gear, the hob having a normal-to-teeth pitch larger than the normal-to-axis pitch of the gear to be chamfered. CONSTITUTION:A hob 6 fitted on a cutter shaft 7 is provided with a normal-to- teeth pitch PH selected to be larger than the normal-to-axis pitch PG of a gear 1 to be cut. The positional relationship between the gear 1 and the hob 6 is set by making the space center line L1 of the gear 1 identical with the generating center L2 of the cutting blade of the hob 6 and then imparting an amount of addendum modification for generation of an undercut to the hob 6. Then the early stage of generating tooth cutting operation is conducted between each adjacent pair of teeth 2a, 2b of the thus tooth-cut gear 1 by a hob of a module larger than that of the gear 1, to carry out chamfering efficiently and economically.

2. 发明专利

JPS6039024A PLUNGE CUT SHAVING CUTTER 失效
公开(公告)号：JPS6039024A
公开(公告)日：1985-02-28
申请号：JP14721583
申请日：1983-08-10
申请人： KOBE STEEL LTD
发明人： SUEYASU MASAHARU , KUSAKABE YUUJI
IPC分类号： B23F21/28
摘要： PURPOSE:To minimize each thrust force of a cutting edge in each face against a tooth of a work gear as well as to reduce the thrust force of a cutter as a whole, by altering the arrangement of cutting edges at both acting and counteracting face sides in a proper manner. CONSTITUTION:Cutter teeth Z1, Z6, Z4, Z2 and so on of a plunge cut shaving cutter are installed each in where they should be. A helix A' connecting a cutting edge at the acting face side and another helix A connecting a cutting edge at the counteracting face side are different each other. That is to say, a helix angle of the former is of beta1 while a helix angle of the latter is of beta2. Next, since either cutting edge at both tip side and countertip side cutting edges performs cutting in making a central deepest infeed part of a scarf formed by a preceding cutting edge an infeed starting point, the cutting edge at either side is also minimized in its thrust force to each tooth of a work gear so that the total thrust force of the cutting edge becomes minimized, thus the thrust force of the cutter on the whole is reducible in this way.

3. 发明专利

JPS5656339A MACHINING METHOD OF CHAMFER GRINDING FOR END FACE OF GEAR TOOTH 失效
公开(公告)号：JPS5656339A
公开(公告)日：1981-05-18
申请号：JP13063279
申请日：1979-10-08
申请人： KOBE STEEL LTD
发明人： YAMAMOTO TADAO , KUSAKABE YUUJI
IPC分类号： B23F19/10 , B23F19/12
摘要： PURPOSE:To perform the efficient work of chamfering the end face of a gear tooth, by machining the initial part of gear cutting with a screw-shaped grindstone of specfic trapezoidal tooth profile. CONSTITUTION:To a portion between neighboring teeth 2a, 2b of a gear cut ground gear 1, a generating gear cut initial part is newly applied by a screw-shaped grindstone 6 of trapezoidal tooth profile with a larger module than that of the gound gear 1 to perform the work of their chamfering. Here it is necessary to provide the condition that a normal circular pitch Pw of the grindstone 6 is 1.2-2 times the normal pitch PG of the ground gear 1, a gear groove center line L1 of the ground gear 1 is aligned to a generating center L2 of tooth profile of the grindstone 6 and the amount of addendum modification causing undercut is given to the grindstone 6. In this way, the machining work can be efficiently and highly accurately performed by an existing gear grinding machine and grindstone.

4. 发明专利

JPS6039023A PLUNGE CUT SHAVING CUTTER 失效
公开(公告)号：JPS6039023A
公开(公告)日：1985-02-28
申请号：JP14721483
申请日：1983-08-10
申请人： KOBE STEEL LTD
发明人： SUEYASU MASAHARU , KUSAKABE YUUJI
IPC分类号： B23F21/28
摘要： PURPOSE:To make a cutting amount in both acting and counteracting faces of each tooth in a work gear so as to become almost equal, by consituting a total cutting front range of all cutting edges at the acting face side of each cutter tooth so as to make it larger than the total cutting front range of all cutting edges at the counteracting face side. CONSTITUTION:A cutting front range T'b of each cutting edge Zb at the side of an acting face (b) in each cutter tooth Z is constituted so as to be larger than a cutting front range Tc of each cutting edge Zc at the side of a counteracting face (c). With a cutting edge form being constituted as abovementioned, the total sum of the front range T'b is able to make larger than the total sum of the front range Tc of each cutting edge Zc at the side of the counteracting face (c) so that face pressure against the acting face of each tooth of a work gear on the cutting edge at the acting face side grows larger than the face pressure against an acting face W2 on a counteracting face side cutting edge Zc. With this constitution, an infeed stroke at the acting face side of a work gear W and an infeed stroke at the counteracting side both are made possible to be equalized.

5. 发明专利

JPS54158795A BUILTTUP GEAR HOB 失效
公开(公告)号：JPS54158795A
公开(公告)日：1979-12-14
申请号：JP6854278
申请日：1978-06-06
申请人： KOBE STEEL LTD
发明人： MORIMOTO TOSHIAKI , MOTONISHI SUGURU , KUSAKABE YUUJI
IPC分类号： B23F21/16 , B23K15/00
摘要： PURPOSE:To minimize thermal effect on the constituent material by fitting blades by the use of the electron beam welding method, in a built-up hob consisting of blades. PURPOSE:Blades 3 are fitted to grooves 2 provided on hob proper 1. Joints 4 are welded by an electron beam and thereby a hob is assembled. By narrowing the electron beam, the width of welding W can be reduced and a deeper welding can be obtained, so that the thermal effect on the constituent material, particularly thermophobic materials such as high-speed steel, can be reduced. The effect can be further increased when the hob proper and the blades are welded at both ends of the hob shaft by an electron beam via a collar of the same material as the hob proper.

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