MILLING MACHINE Russian patent published in 1995 - IPC

FIELD: machine tool manufacture. SUBSTANCE: kinematic flowsheet of the machine has bed 1 with frame 3 mounted on it by means of bearings 10. Shafts 6,7 with working tools 8,9 brought into rotation by the power drive are fastened on the frame in bearings 4,5. Frame 3 is connected with bed 1 by means of a mechanism securing the shifting of frame 3 relative to bed 1. The mechanism is made for example as a crank gear having connecting rod 23 of variable length connected with frame 3 by means of hinge 22. Crankshaft 24 is also hinged with the mechanism. Shaft 25 of crankshaft 24 is kinematically connected with the mechanism of shifting the movable part 20 of working table 21. The given mechanism can be made as a variable-speed drive or gear box 26 containing gear wheel 27 interconnecting with rack 28 fixed on the movable part 20 of the working table 21. In this case the variable-speed drive or gear box 26 is mounted on shaft 25 of crankshaft 24 connected with a motor. Frame 3 hinged with the crank gear is mounted on bed 1 with the aid of bearings 10. Frame 3 forms a crank-rocking shaft mechanism. All the members of this mechanism have means allowing to change their length. It results in applying patterns with different profiles to the surfaces of blank 23. The availability on shaft 25 of the variable-speed drive or gear box 26 connected with the rack mechanism of shifting the working table secures the possibility of changing the wave of length of the pattern to be applied. The examples of the applied patterns and panels obtained during the pattern application from both sides of the blank 23 are given. EFFECT: facilitated manufacture. 10 cl, 8 dwg