The ball screw

The ball screw
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滚珠丝杠

DOI:
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发表时间:
2011
期刊:
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影响因子:
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通讯作者:
斋藤伸吾
斋藤伸吾
中科院分区:
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文献类型:
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作者:
横山将司;桥本浩司;原田徹;斋藤伸吾

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本发明的目的在于,进一步提高具有槽状的滚珠返回路(滚珠循环槽)的滚珠丝杠的耐久性、滚珠循环性以及加工性。滚珠丝杠包括:丝杠轴(201),其外周面具有螺旋槽(201a);螺母(202),其内周面具有与螺旋槽(202a)相对的螺旋槽(201a);多滚珠(203),滚珠由两条螺旋槽(201a、202a)构成,可旋转地装在螺旋轨道中;滚珠循环槽(241),使滚珠(203)从轨道起始点末端返回进行循环。另外,从滚珠循环槽241(241)(241b、241b)的轴向(242)的两侧面连续延伸的角部(241c)及侧面(241b)形成为带圆角的形状。
Object of the present invention is to further improve the durability of the ball screw, the ball circulation properties and processability having groove-shaped ball return path (ball circulation groove). The ball screw comprising: a threaded shaft (201), its outer circumferential surface having a spiral groove (201a); a nut (202), the inner circumferential surface having a spiral groove (201a) facing the spiral groove (202a); Multi balls (203), balls rotatably charged in a spiral track is formed by two helical grooves (201a, 202a); and a ball circulation groove (241), which the balls (203) back from the end of the track starting point for circulation. Further, the corner portion (241c) and the respective side surface (241 b) and extending continuously from the both side surfaces of the ball circulation groove (241) (241b, 241b) in the axial direction (242) is formed rounded form.