Alignment fixture
First Claim
1. A part alignment fixture for precision lateral and tilt alignment of a part held by said fixture, comprising:
- a base plate;
a guide plate pivotally mounted on said base plate and having a central opening therein;
a cylindrical hub disposed in said central opening of said guide plate radially spaced from the walls of said central opening of said guide plate;
two oppositely disposed pairs of lateral adjustment wedge assemblies, each wedge assembly including a generally wedge-shaped block slidably disposed in said radial spacing between said hub and said wall of said guide plate central opening, said wedge block having a base surface, a planar bearing surface perpendicular to said base surface, and an inclined surface opposite said bearing surface, said inclined surface of said wedge block contacting the wall of said hub, said bearing surface contacting a planar bearing surface formed by the base of a corresponding guide groove in said central opening wall of said guide plate parallel to said bearing surface of said wedge block, and means connected to said base surface of said wedge block for reciprocatively adjusting said wedge block along a path perpendicular to said base surface of said wedge block;
means for adjusting the tilt of said guide plate relative to said base plate; and
means carried by said hub for holding a part to be aligned by said fixture.
0 Assignments
0 Petitions
Accused Products
Abstract
A part alignment fixture is provided which may be used for precise variable lateral and tilt alignment relative to the fixture base of various shaped parts. The fixture may be used as a part holder for machining or inspection of parts or alignment of parts during assembly and the like. The fixture includes a precisely machined diameter disc-shaped hub adapted to receive the part to be aligned. The hub is nested in a guide plate which is adapted to carry two oppositely disposed pairs of positioning wedges so that the wedges may be reciprocatively positioned by means of respective micrometer screws. The sloping faces of the wedges contact the hub at respective quadrants of the hub periphery. The lateral position of the hub relative to the guide plate is adjusted by positioning the wedges with the associated micrometer screws. The tilt of the part is adjusted relative to a base plate, to which the guide plate is pivotally connected by means of a holding plate. Two pairs of oppositely disposed wedges are mounted for reciprocative lateral positioning by means of separate micrometer screws between flanges of the guide plate and the base plate. Once the wedges are positioned to achieve the proper tilt of the part or hub on which the part is mounted relative to the base plate, the fixture may be bolted to a machining, inspection, or assembly device.
18 Citations
3 Claims
-
1. A part alignment fixture for precision lateral and tilt alignment of a part held by said fixture, comprising:
-
a base plate; a guide plate pivotally mounted on said base plate and having a central opening therein; a cylindrical hub disposed in said central opening of said guide plate radially spaced from the walls of said central opening of said guide plate; two oppositely disposed pairs of lateral adjustment wedge assemblies, each wedge assembly including a generally wedge-shaped block slidably disposed in said radial spacing between said hub and said wall of said guide plate central opening, said wedge block having a base surface, a planar bearing surface perpendicular to said base surface, and an inclined surface opposite said bearing surface, said inclined surface of said wedge block contacting the wall of said hub, said bearing surface contacting a planar bearing surface formed by the base of a corresponding guide groove in said central opening wall of said guide plate parallel to said bearing surface of said wedge block, and means connected to said base surface of said wedge block for reciprocatively adjusting said wedge block along a path perpendicular to said base surface of said wedge block; means for adjusting the tilt of said guide plate relative to said base plate; and means carried by said hub for holding a part to be aligned by said fixture. - View Dependent Claims (2, 3)
-
Specification