公开(公告)号：US08460483B2

公开(公告)日：2013-06-11

申请号：US13052522

申请日：2011-03-21

Applicant: Takashi Yajima ,  Hideki Okada ,  Katsuyuki Nishioka ,  Takeshi Furuse

Inventor： Takashi Yajima ,  Hideki Okada ,  Katsuyuki Nishioka ,  Takeshi Furuse

IPC: C21D9/02 ,  C21D8/02

CPC classification number: C21D9/02

Abstract: A method for heat treatment of a coiled spring includes cold forming a coiled spring, annealing the coiled spring after the cold forming, thereby removing of residual stress generated in the cold forming, in which the annealing is performed by electric resistance heating.

Abstract translation: 螺旋弹簧的热处理方法包括：冷成形螺旋弹簧，在冷成型后对螺旋弹簧进行退火，从而消除在冷加工中产生的残余应力，其中通过电阻加热进行退火。

公开(公告)号：US06928846B2

公开(公告)日：2005-08-16

申请号：US10348938

申请日：2003-01-22

Applicant: Takeshi Furuse

Inventor： Takeshi Furuse

IPC: F16F1/02 ,  B21F3/02 ,  B21F3/06 ,  B21F3/10 ,  B21F35/00 ,  F16F1/06

CPC classification number: B21F3/10 ,  B21F3/02

Abstract: In a cold coil forming process, a pitch control tool is moved in synchronism with the displacement of the outer diameter control roller so as to form a coil spring having a straight and oblique axial line, and, at the same time, maintain a pitch of the coil wire substantially constant substantially over an entire length thereof. Thus, the method of the present invention can be implemented by using a conventional coiling machine only if the outer diameter control roller and the pitch control tool can be adjusted as required by the present invention. In particular, the pitch of the coil spring can be kept constant over each turn of the coil wire without regard to the variation in the radius of curvature of the coil spring.

Abstract translation: 在冷线圈成形处理中，俯仰控制工具与外径控制辊的位移同步地移动，以形成具有直的和倾斜的轴线的螺旋弹簧，并且同时保持 线圈线基本上在其整个长度上基本上恒定。 因此，只有外径控制辊和俯仰控制工具可以根据本发明的要求进行调节，本发明的方法可以通过使用传统的卷取机来实现。 特别地，螺旋弹簧的螺距可以在线圈线圈的每一匝上保持恒定，而不考虑螺旋弹簧的曲率半径的变化。