Coupling device
AssigneeWalter Perske GmbH
InventorsRobert L. Campbell, Jr., Kevin E. Moran
Life of this patent
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Abstract
A coupling device for engaging an exchangeable tool support (7) for corotation with a shaft (2) of a motor (1), with the shaft (2) mounting at is driven end a hollow shaft projection (3) for receiving the tool support (7). Alternatively, the tool support (7) can mount the hollow shaft projection for receiving the driven end of the shaft. The shaft (2) and/or the tool support mounts a locking device for securing the tool support (7), and which is actuated by centrifugal force. The coupling device is designed and constructed so as to permit a simple mounting of even heavy tools to the output shaft of the motor, and a reliable connection of the tool and drive.
Claims18
A device for releasably coupling a machine tool support to a drive motor which rotates the machine tool support about an axis, said device comprising
- a hollow shaft projection connected to the drive motor,
- a connection element configured to be received within the hollow shaft projection and being connected to the tool support,
- a locking device for releasably securing the connection element within the hollow shaft projection and which is actuated by centrifugal force exerted during rotation of the drive motor and tool support, and
- wherein the locking device comprises at least one locking member which is mounted to the hollow shaft projection for limited radial movement relative thereto so as to engage the connection element in a locking relationship by reason of the centrifugal force, and
- wherein the at least one locking member includes an oblique surface that is oblique with respect to the axis of rotation and that mates with a corresponding oblique surface on the connection element such that a portion of the centrifugal force is deflected to an axial force upon the tool support.
A device for releasably coupling a machine tool support to a drive motor which rotates the machine tool support about an axis, said device comprising
- a hollow shaft projection connected to the drive motor,
- a connection element configured to be received within the hollow shaft projection and being connected to the tool support,
- a locking device for releasably securing the connection element within the hollow shaft projection and which is actuated by centrifugal force exerted during rotation of the drive motor and tool support, and
- wherein the locking device comprises two locking members which are mounted to the hollow shaft projection, with the two locking members being mounted for limited movement in opposite and aligned radial directions and so that each locking member engages the connection element in a locking relationship by reason of the centrifugal force, and
- wherein the two locking members each include an oblique surface that is oblique with respect to the axis of rotation and that mates with a corresponding oblique surface on the connection element such that a portion of the centrifugal force is deflected to an axial force upon the tool support.
Dependencies are inferred from the claim text.