Compound Fixture Facilities Automated Assembly of Complex Workpiece
Original Publication Date: 1987-Nov-01
Included in the Prior Art Database: 2005-Feb-02
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.