| 摘要 |
<p>A length compensator for a punch tool enabling the punch to be utilized in an autoloading punch press utilizing a robotic tool transfer system to transfer punch tools into and out of the punch press. The compensator includes a first portion attachable to an end portion of the punch tool remote from the punch tip and adjustable lengthwise of the tool, and a second portion positioned to be further from the work contacting surface that the first portion when the latter is mounted to a punch tool. The second portion has an upper ram-engaging surface and is movably mounted to the first portion to enable movement of the second portion lengthwise of the punch tool between a first position in which the first and second portions are spaced from each other a predetermined distance and a second position enabling ram force to be delivered to the end portion of the punch tool. A spring is provided to urge the second portion into its first position, thereby increasing the length of the punch tool sufficiently to enable it to be gripped by the robotic transfer system.</p> |
