CENTRIFUGAL BARREL POLISHING MACHINE AND CENTRIFUGAL BARREL POLISHING METHOD

摘要

Provided is a centrifugal barrel polishing machine capable of maintaining or improving polishing efficiency while increasing polishing amount. The centrifugal barrel polishing machine (10) includes a barrel (12) which is configured to perform planetary rotation and into which workpieces and polishing media are put, thereby polishing the workpieces by the polishing media. A relative centrifugal acceleration F during the planetary rotation of the barrel (12) is set in a range of −2.5(n/N)+12.6≦F≦6.1(n/N)+40.7 where N designates a revolution speed of the barrel (12), n designates a rotation speed of the barrel (12), R designates a radius of an orbital path (15) drawn by a rotation center of the barrel (12), n/N designates a rotation/revolution ratio of the barrel (12), and F=4π2N2R/g designates a relative centrifugal acceleration which is a ratio of a centrifugal acceleration on the orbital path (15) during the planetary rotation of the barrel (12) to gravity acceleration g.

主权项

1. A centrifugal barrel polishing machine which includes a barrel which is configured to perform planetary rotation and into which workpieces and polishing media are put, thereby polishing the workpieces by the polishing media,wherein a relative centrifugal acceleration F during the planetary rotation of the barrel is set in a range of −2.5(n/N)+12.6≦F≦6.1(n/N)+40.7 where N designates a revolution speed of the barrel, n designates a rotation speed of the barrel, R designates a radius of an orbital path drawn by a rotation center of the barrel, n/N designates a rotation/revolution ratio of the barrel, and F=4π2N2R/g designates a relative centrifugal acceleration which is a ratio of a centrifugal acceleration on the orbital path during the planetary rotation of the barrel to gravity acceleration g.