SU729033A1 - Apparatus for automatic positioning of machine tool work-performing member at a stop - Google Patents

Description

and the worm to 4 - by means of a micrometric thread 13. The driving gear 6 is fixed on the worm 3 with a nut 14 by means of a collet 15 and is provided with a limb 16 of the displacement of the cross slide. The collet chuck 14-15 and pimba 16 are elements of the corrective mechanism.

The positioning device receives movement from the machine drive through the controls and the transfer chain, which contains the caliper stopping mechanism, which automatically switches off the supply when triggered,

The automatic positioning device operates in the following way.

When the cross slide slide self-propeller is engaged, the handle from the feed screw 1 is transmitted through the gear spyroid wheel by screws 3 and 4 which rotate in opposite directions with the same speed. From screw 3, through gear 6-7 and key connection 12, the movement is transmitted to the stop screw 8, which, leading to the speed 4 by rotation in the direction of rotation, rotates with its thread 13 and the screw movement in the axial direction until it is rested against one of the interchangeable rods 9 of the multi-position 1O,

B (N-nHt where N is the number of turns of the screw 8;

 - the number of revolutions of worms 3 and 4

t - screw pitch 8;

E - axial movement of the screw 8

for revolutions.

Due to the resulting overloads in the kinematic chain, the mechanism for stopping the caliper is triggered and the slide rails transverse to the mounting position (coordinate). When changing the direction of the self-propelled slide, the feed screw and all elements of the positioning device rotate in the opposite direction, and the axis of movement of the stop screw 8 is limited to multiple positions by 1 CONSTANT stop I. By switching the mnemonic control knob to neutral, the transfer of gear from the machine drive to feed screw 1 stops. By rotating the manual movement knob, the opsf screw 8 of the device is retracted from the rod 9, the multi-stop 1 o (11) is turned to the next position and the cycle of operation of the device is repeated. A check of the position of the tool (conditional zero) or compensation of deviations of the AIDS system is carried out based on the results of checking the accuracy of the dimensions of the part made using the correct mechanism 14-16. Leading gear 6 is released from tsengi 13 and rotates on worm 3 in the right direction with pressure reading on limbus 16. At the same time, through gear 6-7 and key connection 12, the stop screw 8 is inserted and interact with the fixed worm 4 on the thread 13, is moved in the axial direction by a correction value that is a multiple of the limb divisions 16. Then the nut 6 and the collet 15 again fix the gear 6 on the screw 3, For easy reference of the dimensions during adjustment and operation on the wall, the division value of the limb 16 and the gear ratio are calculated Taking into account the multiplicity of linear variables and slides of the slide and the stop screw 8 according to the formula:

T

t - screw pitch 8;

Where

T - screw feed pitch 1;

-t - spiroid gear ratio 2-3 (4);

-t, - gear ratio gear

gears 6-7,

Claims (1)

1. Brochures Micro but French company Kc then, machine model A42.