| 摘要 |
PCT No. PCT/NO86/00068 Sec. 371 Date May 12, 1987 Sec. 102(e) Date May 12, 1987 PCT Filed Sep. 23, 1986 PCT Pub. No. WO87/01641 PCT Pub. Date Mar. 26, 1987.The combination of a rotary tool and a drive therefor, the tool having a conical taper between 60 DEG and 120 DEG to chamfer or remove burrs from machined workpieces. The tool comprises a casing containing a motor for rotating the tool, the motor having a drive shaft connected for rotation to the tool, and the tool having a shaft coaxial with the drive shaft. The drive shaft and the tool shaft are elastically connected for axial sliding movement of the tool shaft relative to the drive shaft against a force urging the tool shaft in a direction away from the drive shaft. The drive shaft is splined, and the tool shaft has thereon a splined member surrounding and engaging with the splines of the drive shaft. The tool shaft is mounted in a piston for rotation, and fluid pressure is supplied to the piston in a direction to urge the piston away from the motor, by conveying air under pressure through the motor and through the drive shaft to a region between the drive shaft and the tool shaft communicating with a face of the piston to urge the piston away from the motor.
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