Browse Prior Art Database

Self Centering Compliance Device

IP.com Disclosure Number: IPCOM000051890D
Original Publication Date: 1981-Mar-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Westermann, KH: AUTHOR

Abstract

There is shown and described an improved compliance device for vacuum tool changer heads. Existing device designs require large, space consuming linkage plates and/or slow robot commands. The present device overcomes these disadvantages while providing reliable correction for lateral misalignments.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Self Centering Compliance Device

There is shown and described an improved compliance device for vacuum tool changer heads. Existing device designs require large, space consuming linkage plates and/or slow robot commands. The present device overcomes these disadvantages while providing reliable correction for lateral misalignments.

In Fig. 1, a tool 1 is gripped in automated assembly head 2 by means of vacuum through port area 3. Within gripper 2, tool 1 is centralized by spring 4 biased shaft 5. Shaft 5, as shown in the schematic enlargement of Fig. 2, has a conical end seated in a correspondingly formed indentation 6 in tool 1. Spring 4 is provided for detenting and damping movement of shaft 5.

If, for example, the tool 1 is being used to assemble pin 7 into a workpiece 8, the dotted lines indicate a possible misalignment in Fig. 1. As seen in Fig. 2, however, the device is caused to self/center by the action of the spring on shaft 5 and tool 1. Vacuum is maintained throughout the adjustment because port area 3 surrounds the contact area.

This compliance device technique is applicable to many kinds of automatic assembly applications.

1

Page 2 of 2

2

[This page contains 3 pictures or other non-text objects]