| 摘要 |
<p>The invention relates to a machine with digitally controlled bridge for engraving floors, plates or cut-outs, for carrying out low reliefs on marble and granite, included. According to the invention, the machine comprises a mobile or fixed frame whereon there are mounted some direction girders (), another girder () being mounted transversaly over said direction girders, some motor-housing-ball screws driving groups (), some tracks () provided with ball carriages and a track () provided with a wheel or ball carriage and also some connection plates () which take over the motion from the ball screw carrying out the displacement on girders () while some other tracks () provided with ball carriages arranged on a large plate () mounted perpendicularly on girder () and a connection plate () take over the motion from one of the driving groups () carrying out the displacement of a swivel pin () with or without bracket (), and also an electronic assembly by means of which there is carried out the digital control.</p> |
