Object positioning and fixing device

摘要

In an object positioning and fixing device that positions and fixes a work pallet on a base member: a reference seating surface is formed on the base member; a contacting surface is formed on the work pallet; fitting cylindrical portions of a plurality of reference members are fixed in a plurality of fitting holes in the base member; a plurality of annular engagement members are installed in the work pallet; each of the reference members has an engagement projection; a base end contacting surface of the base end of the engagement projection is brought into contact with the reference seating surface so as to set the height position of the engagement projection; and the annular engagement member engaged over the outside of the engagement projection is elastically deformed in the radially outward direction so that it tightly contacts against the tapered engagement surface.

主权项

1. An object positioning and fixing device that positions and fixes a target object on a base member in a horizontal direction and in a vertical direction, comprising:
said base member comprises a reference seating surface for positioning in the vertical direction, and said target object comprises a contacting surface that can contact against said reference seating surface; said base member comprises a fitting hole that is formed to open to said reference seating surface, and a reference member that is fixed in said fitting hole; said target object comprises an installation hole that is formed to open to said contacting surface at a position corresponding to said reference member, and an annular engagement member that is fixed in said installation hole; said reference member comprises a fitting cylindrical portion that is fitted into and fixed in said fitting hole, an engagement projection that is formed integrally with said fitting cylindrical portion so as to have a larger external diameter than said fitting cylindrical portion and a smaller diameter than said annular engagement member and that projects from said reference seating surface toward said target object, a tapered engagement surface that is formed on at least a portion of an external peripheral surface of said engagement projection and whose diameter becomes smaller towards said target object, and a base end contacting surface that is formed on a base end of said fitting cylindrical portion side of said engagement projection so as to have a smaller external diameter than that of said annular engagement member and that contacts against said reference seating surface; and said annular engagement member comprises a tapered contacting surface that, when said base end contacting surface is contacted against said reference seating surface, can engage in a tightly contacting state with said tapered engagement surface of said engagement projection, via elastic deformation in a radially outward direction of said annular engagement member.