会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明专利
    • MANUFACTURING METHOD FOR PULLEY HAVING PLURAL GROOVES
    • JP2002346676A
    • 2002-12-03
    • JP2001153316
    • 2001-05-23
    • KOJIMA PRESS KOGYO KK
    • TANAKA HIDEAKIASANO TADAYUKI
    • F16H55/36B21H1/04
    • PROBLEM TO BE SOLVED: To provide a manufacturing method for a pulley having plural grooves which has high flexibility of designing for a mounting position with respect to a predetermined rotational shaft. SOLUTION: A pre-form 28 having a bottomed papered cylindrical shape is pinched so that the tapered cylindrical part gradually expands a diameter toward a first rim part forming part between the first rim part forming part and a second rim part forming part by using a forming die 42 which is equipped with a first die 44 and a second die 46 having the first rim part forming part and the second rim part forming part corresponding to the inner peripheral shapes of a long extended part and a short extended part in a rim part of the pulley having plural grooves. The cylindrical rim part having the long and short extended parts is formed by applying form rolling used by a forming roller 112 to the tapered cylindrical part under a condition that it is set in the forming die. Furthermore, the form rolling used by a groove forming roller is applied to this formed rim part, as a result, ring-shaped grooves are formed on the outer peripheral face of the long extended part of the rim part and the outer peripheral face of the short extended part thereof.
    • 9. 发明专利
    • PRODUCTION OF METAL PRODUCT FORMED INTEGRALLY WITH CYLINDER PART
    • JPH11156451A
    • 1999-06-15
    • JP33011797
    • 1997-12-01
    • KOJIMA PRESS KOGYO KK
    • TANAKA HIDEAKIASANO TADAYUKI
    • B21D22/16B21D53/26B21H1/04B21K1/42
    • PROBLEM TO BE SOLVED: To advantageously produce a metal product in which a cylinder part is integrally formed and a recessed part has a side face continuously extending in a peripheral direction on an outer peripheral face of a cylinder part with good quality without causing any void. SOLUTION: A cylindrical metal stock is subjected to plastic working to be protruded outward in a diametral direction. After a preform 108 integrally having a bent cylinder wall part showing a chevron cross sectional shape is formed, by using a forming roller 92 having a projecting part 93 of a shape corresponding to the recessed part of a cylinder part of an objective metal product on an outer peripheral face and at the arrangement facing the preform 108 among a side face of the projecting 93 of the forming roller 92, at a state a bent corner part 100 of the bent cylinder wall part 106 is brought into contact with a side face locating a base side of the bent cylinder wall part of the preform, by form-rolling the bent cylinder wall part, a section between the bent corner part of the bent cylinder wall part is compressed in its longitudinal direction to be thickened and the bent cylinder wall part is formed to a shape corresponding to an outer peripheral face of the forming roller 92, the cylinder part is formed.