| 摘要 |
An apparatus for pointing twist drill bits includes a processing unit which has a rotary index plate on which are mounted a plurality, e.g., five, of drill bit holders which are circumferentially spaced apart at equal, e.g., 72-degree intervals, and a loading unit which has located adjacent to the index plate a rotary pedestal on which are mounted an equal number of transfer arms. Located around the periphery of the processing unit and loading unit are a plurality of processing stations and loading unit operation stations, respectively. Under computer control, the index plate and pedestal are periodically rotated non-simultaneously in opposite directions and stopped for predetermined time periods during which sensors and actuators cause drill bits to be loaded from a container located at an input/output station onto a loading unit arm, cleaned, transferred to a drill bit holder, sequentially processed at processing stations, including a point grinding station, transferred back to a loading unit arm, discharged to a defectives container if defective, have a collar ring adjusted, and returned to the input/output station for discharge to a transport container. Prior to and after a grinding process, each drill bit is cleaned by a dirt removal apparatus which uses a plastically deformable body, preferably a toroidal roller which is pivoted into contact with a drill bit point, causing the point to pierce the body and transfer dirt thereto, the body is then pivoted away from the point with dirt adhered to the body.
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