| 摘要 |
<p>Contact-free linear drive device, in which the stationary guide part is designed as profile parts 2 the magnetic material of which in areas near the screw threads 3, 4, approaches these 8, 11, 17 and at a distance from the screw threads forms a return connection to the next thread. The rotating part has double threads 1 and 3, 4 respectively with a distance between, whereby there is a constant magnetic field 7 produced in the magnetic circuit formed by a double screw and the magnetic return connection. A very simple and economical construction and method of manufacture can be put into effect. The profile part 2 can be designed as profile rails 9 or as tubes 10, 15 and can have window-like cut-outs 6, undulations 11, 12, or ribs 17. The double screw 1 can be designed with permanent magnets 14 inserted in the screw threads in a radial direction or with permanent magnets 14 arranged in an axial direction between the soft-magnetic screw threads. <IMAGE></p> |
