发明名称 |
Arrangement for a tube rolling mill |
摘要 |
The tool according to the invention in a tube rolling mill comprises a mandrel 1 and rolls 5, which are arranged across the lengthwise axis 0-0 of the mandrel 1 and separated by equal distance from same. In the side surfaces of the rolls 5 are accommodated roll grooves 6, in which a tube 4 is supposed to be machined during the rolling. The roll groove 6 has variable cross section surface along the length, along which are arranged a diameter reduction zone, a grooving zone, and a compression zone between them. The diameter reduction zone has a parabola-shaped cross section profile that is formed during the rolling at the bottom part of the roll groove 6 in the roll 5. One portion of the compression zone bordering the grooving zone also has a broadening of the cross section profile formed during the rolling at the bottom part of the roll groove 6 in the roll 5 in the form of a convex parabola at the lengthwise axis 0-0 of the mandrel 1. The generatrix of the mandrel 1 is parabola-shaped over the portion of its length corresponding to said portion of the compression zone 8. The other portion of the compression zone according to the invention has a broadening of the cross section profile formed during the rolling at the bottom part of the roll groove 6 in the roll 5 in the form of a parabola, whose convexity faces the direction away from the lengthwise axis 0-0 of the mandrel 1. The portion of the generatrix of the mandrel 1 corresponding to this other portion also has the shape of a convex parabola and borders a cylindrical portion of the generatrix of the mandrel 1, corresponding to the diameter reduction zone. <IMAGE> |
申请公布号 |
SE428884(B) |
申请公布日期 |
1983.08.01 |
申请号 |
SE19790007314 |
申请日期 |
1979.09.03 |
申请人 |
YAKOV EFIMOVICH * OSADA;LEONID VASILIEVICH * TIMOSHENKO;VIKTOR FILIPPOVICH * FROLOV;GEORGY IOSIFOVICH * KHAUSTOV;IOSIF JULIEVICH * KOROBOCHKIN;STANISLAV NIKOLAEVICH * KEKUKH;IVAN MIKHAILOVICH * OBUKH-SHVETS;ALEXANDR IVANOVICH * KUTSENKO;ALEXANDR GRIGORIEVICH * PALY;VLADIMIR FEDOROVICH * KOVALEV |
发明人 |
YAKOV EFIMOVICH * OSADA;LEONID VASILIEVICH * TIMOSHENKO;VIKTOR FILIPPOVICH * FROLOV;GEORGY IOSIFOVICH * KHAUSTOV;IOSIF JULIEVICH * KOROBOCHKIN;STANISLAV NIKOLAEVICH * KEKUKH;IVAN MIKHAILOVICH * OBUKH-SHVETS;ALEXANDR IVANOVICH * KUTSENKO;ALEXANDR GRIGORIEVICH * PALY;VLADIMIR FEDOROVICH * KOVALEV |
分类号 |
B21B21/00;B21B21/02;B21B25/00;(IPC1-7):21B21/02;21B25/00 |
主分类号 |
B21B21/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|