Browse Prior Art Database

Compound Fixture Facilities Automated Assembly of Complex Workpiece

IP.com Disclosure Number: IPCOM000040422D
Original Publication Date: 1987-Nov-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 58K

Publishing Venue

IBM

Related People

Barenboim, M: AUTHOR [+5]

Abstract

A fixture used in one cell of an automated printhead assembly line has three functions: it holds the primary workpiece; it receives and holds secondary parts as they are pre-assembled prior to assembly to the primary workpiece; and it provides for storage of a gauge required in the assembly operation. Fig. 1 illustrates the assembly problem solved with this compound fixture. Primary workpiece 1 (sub-assembly #2) is assembled with spacer 2, armature assemblies 3, spring assembly 4 and spring plate 5, all held together by screws 6. Workpiece 1 is provided with two pairs of tooling holes: large ones 7, and small ones 8. Fig. 2 shows compound fixture 20. Three studs 9 together with locating pins 10 constitute a fixture to hold primary workpiece 1. Four stepped posts 11 form a pre-assembly fixture.

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Compound Fixture Facilities Automated Assembly of Complex Workpiece

A fixture used in one cell of an automated printhead assembly line has three functions: it holds the primary workpiece; it receives and holds secondary parts as they are pre-assembled prior to assembly to the primary workpiece; and it provides for storage of a gauge required in the assembly operation. Fig. 1 illustrates the assembly problem solved with this compound fixture. Primary workpiece 1 (sub-assembly #2) is assembled with spacer 2, armature assemblies 3, spring assembly 4 and spring plate 5, all held together by screws 6. Workpiece 1 is provided with two pairs of tooling holes: large ones 7, and small ones 8. Fig. 2 shows compound fixture 20. Three studs 9 together with locating pins 10 constitute a fixture to hold primary workpiece 1. Four stepped posts 11 form a pre-assembly fixture. Block 12 containing two holes 13 is a fixture to hold a gauge when not in use. At the start of the assembly cycle, fixture 20 holds only armature arm gauge 14, as shown in Fig. 3. Gauge 14 rests on block 12 positioned by two locating pins (not shown) plug inserted in holes 13. In the next step, as shown in Fig. 4, workpiece 1 is inserted into its fixture, positioned by tooling holes 7 on locating pins 10; gauge 14 is removed from its resting place and placed atop workpiece 1, positioned by its two locating pins in tooling holes
8. In the next step, as shown in Fig. 5, spacer 2 and armature arm assemblies 3 ...