| 摘要 |
PURPOSE:To enable a device to efficiently perform polishing using polishing tapes of large width, by providing a means, which pressurizes a back surface of the polishing tape with desired distribution, and performing the polishing to be controlled so that its speed obtains a desired value. CONSTITUTION:Polishing tapes 2, 12, wound by winding mechanisms 5, 15, are arranged on a picture of a magnetic disc 1, which is a work, further held by pressurizing parts 3, 13. These pressurizing parts 3, 13, providing two rows of three throttle holes 32 to be drilled over the magnetic disc 1 from its internal peripheral p[arts Ri to peripheral part Ro, form a pressurizing chamber 31 on a surface brought into contact with the polishing tapes 2, 12 in the bottom end of said holes, and a polishing device, which respectively introduces fluid pressures P1-P6 suitably set by a pressurizing force regulating system 4, uniformly presses the polishing tapes 2, 12 to the magnetic tape 1. Under this condition, the device, rotating the magnetic disc 1 in a desired rotary speed, performs polishing. In this way, a surface of optional shape of the work can be efficiently further high accurately polished by using the polishing tape of large width. |
