公开(公告)号：US20030066372A1

公开(公告)日：2003-04-10

申请号：US10244551

申请日：2002-09-17

Applicant: TOYODA KOKI KABUSHIKI KAISHA

Inventor： Tsune Kobayashi ,  Toshiya Ishigami ,  Kenichi Fukumura

IPC: F16H025/22

CPC classification number: F16H25/2223 ,  F16H25/2204 ,  Y10T74/19749 ,  Y10T74/19777

Abstract: A deflector type ball screw includes a screw shaft having an external thread groove in an outer peripheral surface, a ball nut having an internal thread groove in an inner peripheral surface and a plurality of balls that are rollably housed between the internal thread groove and the external thread groove, and four deflectors fixed to the ball nut. The deflectors function as by-passes linking adjacent internal thread grooves of the ball nut. As a result of the deflectors guiding the balls, the screw groove of the ball nut is divided into four circulation passages. When a diameter d is the nominal diameter used in a case in which all of the balls of ball groups 72a to 72d have the same diameter; a diameter d1 is the ball diameter of the ball groups housed in first and fourth circulation passages; and a diameter d2 is the ball diameter of the ball groups housed in second and third circulation passages, d1nulld and the relationship of 1.005d1nulld2null1.1d1 is satisfied.

Abstract translation: 导向型滚珠丝杠包括在外周面具有外螺纹槽的螺杆轴，在内周面具有内螺纹槽的滚珠螺母和可滚动地容纳在内螺纹槽和外螺纹槽之间的多个滚珠 螺纹槽和固定在滚珠螺母上的四个导流板。 偏转器作为旁路连接球螺母的相邻内螺纹槽。 由于导向器引导滚珠的结果，滚珠螺母的螺纹槽被分成四个循环通道。 当直径d是在球组72a至72d的所有球具有相同直径的情况下使用的公称直径; 直径d1是容纳在第一和第四循环通道中的球组的球直径; 直径d2是容纳在第二和第三循环通道中的球组的球直径，d1 = d，并且满足1.005d1 <= d2 <= 1.1d1的关系。

公开(公告)号：US20040007801A1

公开(公告)日：2004-01-15

申请号：US10455430

申请日：2003-06-06

Applicant: TOYODA KOKI KABUSHIKI KAISHA

Inventor： Kenichi Fukumura

IPC: C21D009/32 ,  F16H001/04

CPC classification number: C21D9/32 ,  B62D3/126 ,  C21D1/10 ,  Y02P10/253 ,  Y10T74/1967

Abstract: A method of heat-treating a rack bar includes a step of continuously conveying a rack bar provided with a rack teeth portion and a ball screw portion by a quenching means, and a step of sequentially applying a quenching treatment to each circumferential surface of the rack teeth portion and the ball screw portion. The quenching treatment is preferably and sequentially applied to each entire circumferential surface of the rack teeth portion and the ball screw portion.

Abstract translation: 一种对杆架进行热处理的方法包括通过淬火装置连续输送设置有齿条部分的齿条和滚珠丝杠部分的步骤，以及对架子的每个圆周表面进行淬火处理的步骤 齿部和滚珠丝杠部。 淬火处理优选并依次施加到齿条部分和滚珠丝杠部分的整个圆周表面。