| 摘要 |
<p>In a clamping apparatus for fixing a work piece carrier with a clamping pin in a clamping chuck, the chuck is provided with a central opening for receiving the clamping pin and with clamping mechanism firmly keeping the clamping pin in the central opening. The central opening has a conical insertion section, and the clamping pin comprises a rear section with exposed aligning surface portions, engaging the conical insertion section to align the clamping pin with regard to the chuck in X- and/or Y-directions. Circular bearing surfaces of seat portions on top of the clamping chuck constitute the Z- stop for the work piece carrier. For pneumatically cleaning the exposed aligning surface portions, the conical insertion section is provided with gas outlet openings, located corresponding to the arrangement of the exposed aligning surface portions. The surface areas of the work piece carrier that will rest on the bearing surfaces of seat portions are pneumatically cleaned by gas outlet openings located in t</p> |
