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Browse Prior Art Database

Drill Guide for Taper Reamer

IP.com Disclosure Number: IPCOM000043642D
Original Publication Date: 1984-Sep-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Basco, JP: AUTHOR [+3]

Abstract

The jig or fixture 10 provides an accurate method for hand drilling holes 13 through the theta 1 or theta 2 arm 12 and the respective harmonic drive shaft 14 of the IBM 7535 robot manipulator. The holes 13 are then taper reamed for the required pin size. In addition, this fixture 10 maintains the proper clearance between the theta 1 and theta 2 arms 12. Without this tool, replacement of the drive shaft 14 and/or arm 12 would require moving the robot to a milling machine. The fixture 10 is shown in the figure in conjunction with the theta 2 arm 12 and its harmonic drive shaft 14. The fixture for the theta 1 arm is the same and is, therefore, not shown in the drawing. This device provides accurate location of drill holes 13 through the center of the harmonic drive shaft 14.

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Drill Guide for Taper Reamer

The jig or fixture 10 provides an accurate method for hand drilling holes 13 through the theta 1 or theta 2 arm 12 and the respective harmonic drive shaft 14 of the IBM 7535 robot manipulator. The holes 13 are then taper reamed for the required pin size. In addition, this fixture 10 maintains the proper clearance between the theta 1 and theta 2 arms 12. Without this tool, replacement of the drive shaft 14 and/or arm 12 would require moving the robot to a milling machine. The fixture 10 is shown in the figure in conjunction with the theta 2 arm 12 and its harmonic drive shaft 14. The fixture for the theta 1 arm is the same and is, therefore, not shown in the drawing. This device provides accurate location of drill holes 13 through the center of the harmonic drive shaft 14. The jig 10 is held parallel to the drive shaft 14 by the upper and lower brace legs 16 and 18 fitted against the harmonic drive shaft 14. In the case of the theta 1 arm (not shown), the jig 10 is held parallel to the drive shaft by the upper brace leg 16 fitted against the shaft and the lower brace leg 18 mounted on the roll axis drive gear hub. The locator bolt 20 of the fixture is attached to the center tap hole 22 on the arm, as shown in the figure, and both lock nuts 24 are tightened. This provides a fixed parallel drilling platform. The tool is used for replacing the theta 1 arm or the theta 2 arm 12 or the respective harmonic drive shaft. Once the fixture 10 is...