| 摘要 |
A compact autofeed drill is provided and generally comprises an elongate housing having opposed ends, a motor disposed within the housing, an elongate drill bit, a drill bushing, an actuation device, and a resilient member. The motor is disposed within the housing intermediate the opposed ends. The drill bit is operably connected to the motor and is capable of extending from the housing through one end thereof. The drill bushing is operably connected to the housing and defines a bore, where the drill bushing at least partially surrounds the drill bit as the drill bit extends from the housing through the bore. The actuation device is remotely disposed with respect to the housing and is operably connected thereto, wherein the actuation device is capable of causing the motor to rotate the drill bit and is also capable of causing the drill bit to extend from the housing. The resilient member is operably connected between the housing and the motor and is capable of retracting the drill bit into the housing upon deactuation of the actuation device. The housing is generally cylindrical and defines a central axis, wherein the axis is substantially perpendicular to the end of the housing through which the drill bit extends. In addition, at least one of the motor and the drill bit may be axially moveable with respect to the housing to facilitate extension of the drill bit from the housing. Generally, the drill is adapted to drill a hole in a workpiece and a portion of the housing is adapted to collect chip swarf produced by the drill bit as the hole is drilled. The actuation device may operate under, for example, pneumatic control or electrical control, wherein the control causes the motor to rotate the drill bit and also causes the drill bit to extend from the housing. An associated drilling method and apparatus are also provided.
|
