Metal Finishing Guide Book


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Page 44 of 903

Fig. 7. Conventional sisal buff. Fig. 8. Bias sisal buff. Positioning Mechanism Automated buffing machines orient parts against the media by mechanical methods to duplicate or replace human motions. They rotate, oscillate, tilt, and index the wheel and/or the workpiece. Finishing Lathe The finishing lathe is a device located in relation to the positioning mechanism. It allows a buff wheel to contact one of more surfaces of the workpiece at predetermined locations. Fixturing The workpiece fixture or tooling is used to position a part during the buffing cycle. Buffing machines can incorporate single or multiple fixtures. Fixtures can also be designed to automatically reorient a workpiece during the buffing cycle. Fig. 9. Open cloth sisal buff. Fig. 10. Spoke unit or finger sisal buff. 41

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