| 摘要 |
The invention relates to punching tools enabling the punch to be automatically lubricated at each press blow. It comprises an oil reservoir 1 with, at the base, two injection nozzles 2, and a sealing ring 3. At the moment of the press blow, the punch guide 4 pushes the sealing ring 3 back up, which compresses the spring 5 and clears the orifices of the injection nozzles 2 via which the oil flows out onto the punch 6. The application possibilities of these tools are, given their integrated lubrication, highly appreciated by the industries possessing these punching machines. <IMAGE>
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