Browse Prior Art Database

Impact Gauge for Measuring Tweezer Force

IP.com Disclosure Number: IPCOM000039812D
Original Publication Date: 1987-Aug-01
Included in the Prior Art Database: 2005-Feb-01
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Garcia, J: AUTHOR [+2]

Abstract

A method of calibrating the tweezer force which will prevent the damaging of surface-mounted components is described. A miniature state-of-the-art load cell is used to calibrate the speed and force of a pair of tweezers which are employed to position small surface-mounted capacitors and resistors. The load cell is a special miniature state-of-the-art strain gauge which is the same size as the surface mounted capacitors and resistors. When installed on the machine and the tweezers are activated, the tweezers will strike the load cell causing an output to be displayed on an oscilloscope. This is an extremely precise method to calibrate the tweezer speed and force accurately, thereby preventing damage to the small capacitors and resistors.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Impact Gauge for Measuring Tweezer Force

A method of calibrating the tweezer force which will prevent the damaging of surface-mounted components is described. A miniature state-of-the-art load cell is used to calibrate the speed and force of a pair of tweezers which are employed to position small surface-mounted capacitors and resistors. The load cell is a special miniature state-of-the-art strain gauge which is the same size as the surface mounted capacitors and resistors. When installed on the machine and the tweezers are activated, the tweezers will strike the load cell causing an output to be displayed on an oscilloscope. This is an extremely precise method to calibrate the tweezer speed and force accurately, thereby preventing damage to the small capacitors and resistors. A specialized tool holder is provided in order to hold the load cell in place so that the forces can be measured. This tool holder attaches to the pick-up head and places the sensor at the position where the part would be impacted by the tweezers. This allows a very precise determination of the forces being applied to the component during tweezing.

1