Manufacturing fixture

Patent metadata

Field	Value
Publication number	US-9821424-B2
Application number	US-201414506528-A
Country	US
Kind code	B2
Filing date	Oct 3, 2014
Priority date	Oct 3, 2014
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

A manufacturing fixture includes a rigid base defining a control plane. A first cone locator pin has a first longitudinal axis. The first cone locator pin is connected to the rigid base with the first longitudinal axis orthogonal to the control plane to engage a complementary locating aperture defined in a workpiece. The first cone locator pin engages the complementary locating aperture to locate the workpiece and constrain translation of the workpiece with respect to the control plane. A second cone locator pin has a second longitudinal axis. The second cone locator pin is connected to the rigid base with the second longitudinal axis orthogonal to the control plane to engage a complementary locating hole defined in a workpiece. The second cone locator pin engages the complementary locating hole to locate the workpiece and prevent rotation of the workpiece about the first longitudinal axis.

First claim

The invention claimed is:

1. A manufacturing fixture, comprising:
a rigid base defining a control plane;
a first cone locator pin having a first longitudinal axis, wherein:
the first cone locator pin is connected to the rigid base with the first longitudinal axis orthogonal to the control plane;
the first cone locator pin is to engage a complementary locating aperture defined in a workpiece to locate the workpiece and constrain translation of the workpiece with respect to the control plane; and
the first cone locator pin includes a first frustoconical surface coaxial with the first longitudinal axis to engage the complementary locating aperture; and

a second cone locator pin having a second longitudinal axis, wherein:
the second cone locator pin is connected to the rigid base with the second longitudinal axis orthogonal to the control plane;
the second cone locator pin is to engage a complementary locating hole defined in the workpiece to locate the workpiece and prevent rotation of the workpiece about the first longitudinal axis; and
the second cone locator pin includes:
a second frustoconical surface coaxial with the second longitudinal axis to engage the complementary locating hole;
a tip having the second frustoconical surface coaxial with the second longitudinal axis; and
a mounting frame rigidly mounted to the rigid base and positioned between the rigid base and the tip, wherein:
the mounting frame is to constrain motion of the tip to translation in a tolerance plane defined by the second longitudinal axis and an intersecting line on the control plane; and
the intersecting line intersects the first longitudinal axis and the second longitudinal axis;

wherein the mounting frame includes:
a first platform to rigidly mount to the rigid base;
a second platform spaced from the first platform; and
a pair of parallel beam springs rigidly mounted to the first platform and connected to the second platform wherein the pair of parallel beam springs constrains the second platform to move by translating relative to the first platform in a direction parallel to the intersecting line wherein the tip is rigidly mounted to the second platform.

2. A manufacturing fixture comprising:
a rigid base defining a control plane;
a first cone locator pin having a first longitudinal axis, wherein:
the first cone locator pin is connected to the rigid base with the first longitudinal axis orthogonal to the control plane;
the first cone locator pin is to engage a complementary locating aperture defined in a workpiece to locate the workpiece and constrain translation of the workpiece with respect to the control plane; and
the first cone locator pin includes a first frustoconical surface coaxial with the first longitudinal axis to engage the complementary locating aperture; and

a second cone locator pin having a second longitudinal axis, wherein:
the second cone locator pin is connected to the rigid base with the second longitudinal axis orthogonal to the control plane;
the second cone locator pin is to engage a complementary locating hole defined in the workpiece to locate the workpiece and prevent rotation of the workpiece about the first longitudinal axis; and
the second cone locator pin includes:
a second frustoconical surface coaxial with the second longitudinal axis to engage the complementary locating hole;
a tip having the second frustoconical surface coaxial with the second longitudinal axis; and
a mounting frame rigidly mounted to the rigid base and positioned between the rigid base and the tip, wherein:
the mounting frame is to constrain motion of the tip to translation in a tolerance plane defined by the second longitudinal axis and an intersecting line on the control plane;
the intersecting line intersects the first longitudinal axis and the second longitudinal axis; and
the mounting frame is to constrain motion of the tip to translation parallel to the second longitudinal axis;

wherein the mounting frame includes:
a first wall to rigidly mount to the rigid base;
a second wall spaced from the first wall;
a block centered between the first wall and the second wall;
a first pair of beam springs attached to the first wall and to the block; and
a second pair of beam springs attached to the second wall and to the block opposite the first pair of beam springs wherein the first pair of beam springs and the second pair of beam springs support the block and constrain the block to move by translating relative to the first wall in a direction parallel to the second longitudinal axis wherein the tip is rigidly mounted to the block.

3. A manufacturing fixture as defined in claim comprising:
a rigid base defining a control plane;
a first cone locator pin having a first longitudinal axis, wherein:
the first cone locator pin is connected to the rigid base with the first longitudinal axis orthogonal to the control plane;
the first cone locator pin is to engage a complementary locating aperture defined in a workpiece to locate the workpiece and constrain translation of the workpiece with respect to the control plane; and
the first cone locator pin includes a first frustoconical surface coaxial with the first longitudinal axis to engage the complementary locating aperture; and

a second cone locator pin having a second longitudinal axis, wherein:
the second cone locator pin is connected to the rigid base with the second longitudinal axis orthogonal to the control plane;
the second cone locator pin is to engage a complementary locating hole defined in the workpiece to locate the workpiece and prevent rotation of the workpiece about the first longitudinal axis; and
the second cone locator pin includes:
a second frustoconical surface coaxial with the second longitudinal axis to engage the complementary locating hole;
a tip having the second frustoconical surface coaxial with the second longitudinal axis; and
a mounting frame rigidly mounted to the rigid base and positioned between the rigid base and the tip, wherein:
the mounting frame is to constrain motion of the tip to translation in a tolerance plane defined by the second longitudinal axis and an intersecting line on the control plane; and
the intersecting line intersects the first longitudinal axis and the second longitudinal axis;

wherein the mounting frame includes:
a first wall to rigidly mount to a base platform;
a second wall spaced from the first wall;
a first platform centered between the first wall and the second wall;
a first pair of parallel beam springs attached to the first wall and to the first platform;
a second pair of parallel beam springs attached to the second wall and to the first platform opposite the first pair of parallel beam springs wherein the first pair of parallel beam springs and the second pair of parallel beam springs support the first platform and constrain the first platform to move by translating relative to the first wall in a direction parallel to the second longitudinal axis;
a second platform spaced from the first platform; and
a third pair of parallel beam springs rigidly mounted to the first platform and connected to the second platform wherein the third pair of parallel beam springs constrains the second platform to move by translating relative to the first platform in a direction parallel to the intersecting line, and wherein the tip is rigidly mounted to the second platform.

4. A manufacturing fixture, comprising:
a rigid base defining a control plane;
a first cone locator pin having a first longitudinal axis wherein the first cone locator pin is connected to the rigid base with the first longitudinal axis orthogonal to the control plane to engage a complementary locating aperture defined in a workpiece to locate the workpiece and constrain translation of the workpiece with respe

Assignees

• Gm Global Tech Operations Llc

Inventors

• Lesperance Ronald M
• Wampler Ii Charles W
• Smith Mark Allen

Classifications

• B23K2101/18

  Sheet panels · CPC title

• B23Q1/621

  a single sliding pair followed perpendicularly by a single sliding pair · CPC title

• B23Q3/18 Primary

  for positioning only · CPC title

• B23K37/0408

  for planar work · CPC title

• B25B11/02

  Assembly jigs · CPC title