专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明专利

JPS5825810A CONTROL APPARATUS OF CARRIAGE TYPE DRAWING MACHINE 失效
公开(公告)号：JPS5825810A
公开(公告)日：1983-02-16
申请号：JP13480382
申请日：1982-08-03
申请人： SCHUMAG GMBH
发明人： ERUUIN GEESUTO , BURUUNO UARUTSUAKU
IPC分类号： B21C1/20 , B21C1/28 , B21C1/30

42. 实用新型

JPS57156214U 失效
公开(公告)号：JPS57156214U
公开(公告)日：1982-10-01
申请号：JP4274581
申请日：1981-03-26
IPC分类号： B21C1/30 , B21C1/28

43. 实用新型

JPS57136509U 失效
公开(公告)号：JPS57136509U
公开(公告)日：1982-08-26
申请号：JP2224881
申请日：1981-02-20
IPC分类号： B21C1/28

44. 发明专利

JPS5711714A MANUFACTURE OF HIGH MELTING POINT METALLIC WIRE 失效
公开(公告)号：JPS5711714A
公开(公告)日：1982-01-21
申请号：JP8456180
申请日：1980-06-24
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： ITOU MASAMI , SHIGA NAOJI
IPC分类号： B21C1/00 , B21C1/28 , B21C1/34
摘要： PURPOSE:To prevent generation of defects in a wire during a drawing process following to a roll forging process, at drawing through a die a thin wire of such a high melting poit metal as tungsten, by controlling the pressure and velocity of a chuck holding the end of a rod material to a prescribed range. CONSTITUTION:An ingot is prepared by pressing and sinterng a high melting point metallic powder; this ingot is then subjected to a roll forging process so as to successively reduce the diameter; then, thus prepared rod is drawn through a die into a wire in a prescribed diameter. In this wire drawing process, Aqua-dag is applied to the rod surface, and the rod is heated; then, the hot rod is drawn through a sintered carbide die in order to reduce its diameter gradually; hereupon, if the pressure of chucking the rod end is weak, the wire drawing is impractical, whereas, is the pressure is too high, the rod surface is injured with many defects. If the wire drawing speed is slow, the friction increases and causes cracks, whereas, if the speed is too high, the rod end is hurted with many defects.

45. 实用新型

JPS57964Y2 失效
公开(公告)号：JPS57964Y2
公开(公告)日：1982-01-08
申请号：JP10920779
申请日：1979-08-07
IPC分类号： B21C1/02 , B21C1/14 , B21C1/28 , B21C3/02 , B21C3/12

46. 实用新型

JPS5671311U 失效
公开(公告)号：JPS5671311U
公开(公告)日：1981-06-12
申请号：JP15067479
申请日：1979-11-01
IPC分类号： B21C1/28 , B21C47/06 , B21C47/32

47. 实用新型

JPS5624562Y2 失效
公开(公告)号：JPS5624562Y2
公开(公告)日：1981-06-10
申请号：JP2225879
申请日：1979-02-21
IPC分类号： B21C1/02 , B21C1/14 , B21C1/28

48. 发明专利

JPS5647210A COLD FORMING METHOD FOR SPIRAL GROOVE IN INNER SURFACE OF METALLIC PIPE 失效
公开(公告)号：JPS5647210A
公开(公告)日：1981-04-28
申请号：JP12398679
申请日：1979-09-28
申请人： NIPPON STEEL CORP
发明人： TSUYAMA YOSHITO , KATOU MASAFUMI , NAKASHIMA HIROE , NOUKATA HIROSHI
IPC分类号： B21C3/16 , B21C1/28 , B21C3/00 , B21C37/15
摘要： PURPOSE:To apply the efficient cold drawing work to the inner surface of the metalllic pipe in order to form the spiral groove with high quality, by holding the tip of the pipe blank with the rotary chuck, and by forcibly revolving and feeding the pipe blank while keeping the revolving angle approximately equal to the leading angle of the sprial groove to be formed. CONSTITUTION:At manufacturing the metallic pipe provided with the spiral groove in its inner surface, at first, a drawing work is applied to the tip of the pipe blank 2, and at the same time, the spiral groove 29 fitting to the spiral rib 11 of the plug 12 is formed in the inner surface of the pipe blank 2. Next, the tip of the pipe blank 2 is passed through the die 6 and is grasped by the rotary chuck 1, and besides, the mandrel 10 is inserted into the pipe blank 2, and the plug 12 is screwed into the groove 29 of the forefront inner surface of the pipe blank 2. Then, while forcibly revolving the pipe blank 2 by the chuck 1, a forward feed is given to the pipe blank 2; hereby, the pipe blank 2 is passed through the die 6 and is drawn to contract its diameter, and at the same time, the groove 29 is continuously cold-formed in the inner surface of the pipe blank 2 by the plug 12. Hereupon, the ratio between the feeding speed of the chuck 1 and its rotational speed are set so as to make the revolving angle of the pipe blank 2 almost equal to the leading angle of the rib 11 of the plug 12.

49. 实用新型

JPS561709U 失效
公开(公告)号：JPS561709U
公开(公告)日：1981-01-09
申请号：JP8451379
申请日：1979-06-20
IPC分类号： B21C1/16 , B21C1/28

50. 发明专利

JPS5518403B2 失效
公开(公告)号：JPS5518403B2
公开(公告)日：1980-05-19
申请号：JP9952276
申请日：1976-08-20
IPC分类号： B21C1/14 , B21C1/28 , B21C47/32
摘要： An elongated lever pivotable on a drum for winding a drawn product, between an extended position and a withdrawn position in which it is withdrawn into a cavity in the drum and reconstitutes the wall of the drum, carries a drawn product end gripping mechanism pivotable on the lever. The cavity is upwardly inclined, relative to the direction of rotation of the drum about its axis, from the lower edge of the drum. The element is a cranked lever having a first arm having an elongated shape roughly corresponding to the shape of the cavity and a U-section and a second shorter arm extending inside the drum. The lever is mounted by its cranked portion in the upper end of the cavity to pivot about an axis oblique relative to the axis of the drum. The gripping mechanism is mounted between the branches of the U-section at the end of the first arm remote from the second arm to pivot in the plane of the first arm.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式