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公开(公告)号：JPH07174006A
公开(公告)日：1995-07-11
申请号：JP34551691
申请日：1991-12-26
Applicant: MITSUBISHI MATERIALS CORP , PRESS UND STANZWERK AG
Inventor： KIRIGATANI SEIICHI , HANADA KUNIO , RUUKASU MATSUTO
Abstract: PURPOSE: To enhance the machinability of the shaft of a combination camshaft and to secure the strength of coupling between the shaft and cam. CONSTITUTION: This shaft is used in a combination camshaft 1 wherein a shaft 2 with projecting strips formed on its surface by rolling is fitted into a mounting hole 5 formed in a cam 3, so that the projecting strips 4 are cut or plastically deformed by the inner surface of the cam 3 to integrate the shaft 2 and the cam 3 together. The shaft is made of carbon steel for machine structures which has a Vickers hardness of 100 to 400 and a yield point of 17 to 90 Kgf/mm .
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公开(公告)号：JPH07174004A
公开(公告)日：1995-07-11
申请号：JP34551491
申请日：1991-12-26
Applicant: MITSUBISHI MATERIALS CORP , PRESS UND STANZWERK AG
Inventor： KIRIGATANI SEIICHI , MATSUNAGA HACHIRO , RUUKASU MATSUTO
Abstract: PURPOSE: To make elevated portions smaller in size and number than before so as to reduce the amount of chips generated by forming a mounting hole in a cam into a generally circular shape into which the projecting strips of a shaft main body are fitted, forming elevated portions to be pressed against the projecting strips, and forming projecting portions on the inner surfaces of the elevated portions. CONSTITUTION: This camshaft is used in an internal combustion engine or the like and a shaft main body with projecting strips formed on its outer surface is pressed and fitted into a mounting hole 40 formed in the inner surface of a cam 20. In this case, the mounting hole 40 is formed in a generally circular shape and inwardly projecting elevated portions 41 to be pressed against the projecting strips are formed on at least a portion of the mounting hole 40. Projecting portions 42 are formed on the inner surfaces of the elevated portions 41. The diameter D1 of the mounting hole 40 is set to be, e.g. slightly greater than the outside diameter of each projecting strip. The axial distance D2 between the elevated portions 41 is set to be, e.g. smaller than the outside diameter of each projecting strip and greater than the outside diameter of the shaft main body to avoid interference with the shaft main body. Therefore, the projecting portions 42 are made smaller in size and number than before and the amount of chips generated can be reduced.
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公开(公告)号：JPH06114653A
公开(公告)日：1994-04-26
申请号：JP20449991
申请日：1991-08-14
Applicant: PRESS UND STANZWERK AG , MITSUBISHI MATERIALS CORP
Inventor： RUUKASU MATSUTO , FUJIWARA YUKIO , KAWAGUCHI AKIRA , KIRIGATANI SEIICHI
Abstract: PURPOSE: To continuously fix the components of a camshaft by providing a camshaft component fixing means for clamping and fixing the components of the camshaft, and a conveying means for conveying the components of the camshaft intermittently to a mounting position on a shaft body. CONSTITUTION: A pressing means 15 is operated in the reverse direction, therefore a shaft body is drawn out together with the components of a camshaft fixed thereon from a camshaft component fixing means, and a guiding means 13 is drawn out of the camshaft component fixing means. A conveying means 12 is then operated, therefore the camshaft component fixing means fixed with the next components of the camshaft to be fixed is conveyed to a mounting position and the components of the camshaft is fixed at a prescribed position of the shaft body at a prescribed angle.
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公开(公告)号：JPS52148754A
公开(公告)日：1977-12-10
申请号：JP6498477
申请日：1977-06-03
Applicant: PRESS UND STANZWERK AG
Inventor： KARURU METSUTORERU , ARUTOUURU TEIIFUENTAARERU , PAURU MARUKUSERU
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公开(公告)号：JPH07208118A
公开(公告)日：1995-08-08
申请号：JP34552891
申请日：1991-12-26
Applicant: MITSUBISHI MATERIALS CORP , PRESS UND STANZWERK AG
Inventor： KIRIGATANI SEIICHI , MATSUNAGA HACHIRO , RUUKASU MATSUTO
Abstract: PURPOSE: To provide a camshaft without causing a trouble of assembling strength of a shaft member and a cam and a trouble of impact force applied to the shaft member even though the cam is thinned for reducing material cost and for reducing bending moment applied to the shaft member. CONSTITUTION: In this camshaft in which a cam 12 is unrotatably fixed on a shaft member 1, the cam 12 is formed into a two-layer structure comprising an inner circumferential part 12a and a peripheral part 12b, the width of the inner circumferential part 12a is arranged wider than that of the peripheral part 12b, and the hardness of the inner circumferential part 12a is set lower in comparison with the peripheral part 12b.
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Patent Agency Ranking
公开(公告)号：JPH07189616A
公开(公告)日：1995-07-28
申请号：JP34552791
申请日：1991-12-26
Applicant: MITSUBISHI MATERIALS CORP , PRESS UND STANZWERK AG
Inventor： KIRIGATANI SEIICHI , MATSUNAGA HACHIRO , RUUKASU MATSUTO
Abstract: PURPOSE: To reduce weight as durability of a cam for a combination cam shaft is secured. CONSTITUTION: By fitting a shaft, on the surface of which a protrusion streak is formed, in a mounting hole 5 formed in a cam 3, the protrusion streak is cut or plastically deformed by the inner surface of the cam and the shaft and the cam are integrally formed to form a combination cam shaft, in which this cam is used. The minimum thickness (t) of a base circular part 3a is set to 2 mm or more.
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公开(公告)号：JPH07189615A
公开(公告)日：1995-07-28
申请号：JP34552691
申请日：1991-12-26
Applicant: MITSUBISHI MATERIALS CORP , PRESS UND STANZWERK AG
Inventor： KIRIGATANI SEIICHI , MATSUNAGA HACHIRO , RUUKASU MATSUTO
Abstract: PURPOSE: To suppress the generation of chips during assembly of a combination cam shaft and to secure a strength of coupling between a shaft and a cam. CONSTITUTION: By fitting a shaft, having a protrusion streak formed on its surface, in a mounting hole 12 formed in a cam 11, by cutting or plastically deforming the protrusion streak by a cam inner surface to form a cam used in a combination cam shaft formed such that the shaft and the cam are integrally formed. The mounting hole is formed in a polygonal shape as seen from an axial direction. Provided the maximum thickness of the base circular part of the cam is T and the minimum thereof is (t), the maximum and minimum thicknesses of the cam are set to a relation of T/t
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公开(公告)号：JPH07189614A
公开(公告)日：1995-07-28
申请号：JP34552591
申请日：1991-12-26
Applicant: MITSUBISHI MATERIALS CORP , PRESS UND STANZWERK AG
Inventor： KIRIGATANI SEIICHI , MATSUNAGA HACHIRO , RUUKASU MATSUTO
Abstract: PURPOSE: To prevent change with the lapse of time of the angle of a cam with respect to a shaft member, in a structure of a cam shaft using a cam in which a mounting hole in a polygonal shape is formed. CONSTITUTION: In a cam shaft wherein a cam 8 having a mounting hole 7 in a polygonal shape is fitted in a shaft member 1 having a peripherally extending upheaved part 3 formed on the predetermined portion of an outer surface, the cam 8 and the shaft member 1 are welded together at 15.
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公开(公告)号：JPH07189612A
公开(公告)日：1995-07-28
申请号：JP872992
申请日：1992-01-21
Applicant: MITSUBISHI MATERIALS CORP , PRESS UND STANZWERK AG
Inventor： KIRIGATANI SEIICHI , MATSUNAGA HACHIRO , RUUKASU MATSUTO
Abstract: PURPOSE: To secure a sufficient joining strength by a method wherein hardness of a shaft is set to a specific range of Vickers hardness, hardness of the joint of a cam is set to a specific range of Vickers hardness, and hardness of the cam is set to a specific times to hardness of the shaft. CONSTITUTION: A carbon steel pipe for machine structure is used as a material, heat treatment is applied on the material, and as a treatment condition is changed, hardness of a shaft 2 is treated to Vickers hardness of 150-550. Hardness of the joint of a cam 3 is treated to Vickers hardness of 180-650 through sintering. Since hardness of the cam 3 is increased to a value 1.2 or more times that of the shaft 2, by cutting or plastic deformation of the protrusion streak of a shaft on the inner surface of the cam, the sufficient engaging strength in an around-axis-direction of the cam with the shaft is provided.
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公开(公告)号：JPH06106280A
公开(公告)日：1994-04-19
申请号：JP24204091
申请日：1991-09-20
Applicant: PRESS UND STANZWERK AG , MITSUBISHI MATERIALS CORP
Inventor： RUUKASU MATSUTO , FUJIWARA YUKIO , KAWAGUCHI AKIRA , KIRIGATANI SEIICHI
Abstract: PURPOSE: To quickly detect the abnormality of force-fitting by oppositely disposing a pressure gage to a supporting pipe detecting the pressure applied to the constituting element of a camshaft and energizing the supporting pipe in the direction separating from the pressure gage. CONSTITUTION: The constituting element of the camshaft is combined with the prescribed position of a shaft body S by pressing in the shaft body S into the constituting element of the camshaft to form a manufacturing apparatus for camshaft. Then, the supporting pipe 24 is arranged so as to be shiftable in the longitudinal direction, and on this, the constituting element of the camshaft is laid. The annular pressure gage is disposed oppositely to the supporting pipe 24 to detect the pressure applied to the constituting element of the cam shaft. An energizing member 26 is arranged in the supporting pipe 24 and the supporting pipe 24 is energized in the direction separating from the pressure gage 25. In this way, the pressure at the force-fitting time can smoothly and surely be detected.
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