| 摘要 |
A MIG welding torch reconditioning apparatus (1) has an in-line, direct-drive arrangement of a motor (5), a mechanical transmission shaft (12), and chuck (13) for receiving a reaming tool (3). A pneumatic lift (14) lifts the direct-drive arrangement (11) into reaming tool (3) engagement with a torch gas shield (4) for operating the tool (3) to remove deposits from interior surfaces of the shield (4). The reaming tool (3) is intermittently driven such that when the deposits inhibit the tool (3) from further rotation due to insufficient torque from the direct-drive arrangement (11), the motor (5) discontinues driving rotation of the reaming tool (3) until sufficient motive force can be brought to impact through the reaming tool against the contacted deposits to allow the apparatus to return to normal reaming operation. The apparatus further includes a pneumatic supply line and vent means (31) for directing debri-scattering air flow against the mechanical transmission proximal to exposed seals (33) of the transmission. |
