Patent ID: 9061387
Filing Date: 2015-06-23
Classification: B23B,B23K,B23Q,Y10T

Abstract:
1. An article positioning mechanism for positioning of an article, the article comprising a component or a tool with respect to a mounting portion of a movable member of a mechanical device so as to restrict the rotation of the article, the article positioning mechanism comprising: a holder member to which said article is fixed and a frame shaped member fixed to said mounting portion; said holder member comprising a position regulation surface that is orthogonal to an axis of said mounting portion, and a tapered male engagement portion formed in a regular polygonal shape that, in cross section in a direction orthogonal to said axis, has a plurality of circular arcuate corner portions that are convex outwards and a plurality of side portions, and that is sloped in such a manner that the closer the tapered male engaging portion is to said mounting portion, the closer the tapered male engaging portion is to said axis; said frame shaped member comprising a reference surface that receives and stops said position regulation surface and positions said position regulation surface in an axial direction, and a tapered female engagement portion formed in a regular polygonal shape that, in cross section in the direction orthogonal to said axis, has a plurality of circular arcuate corner portions that are convex outwards and a plurality of side portions, and that slopes in a same direction as said tapered male engagement portion; and when said holder member is fixed to said mounting portion or to said frame shaped member by a fixing means, said tapered male engagement portion is engaged to said tapered female engagement portion in a closely contacting manner via elastic deformation of an outer peripheral side wall portion of said tapered female engagement portion in a radial direction outwards from said axis and in a direction towards said mounting portion.