SU810444A1 - Machine for simultaneous sharpening of round broaching tool three cutting surfaces - Google Patents

Description

A motor, a gearbox with a large gear ratio (not shown) and backlash-free screw nuts 18 and 19. For moving the table 2 there is a stepper drive 20, similar to the drive 17, and also consisting of a stepper motor, a gear with a large gear ratio and screw - nuts 21. The movement of the grinding headstock 10 is set by a stepper drive 22, similar to the drives 17 and 20. Software control of the pitch drives 17, 20 and 22 is carried out from the CNC device 23 and the process unit 24 by means of an electric sensor 25 and a command cam 26 mounted on one shaft with a fist backing 16. The machine works as follows. The cutting cycle of the disk cutters is set depending on the machining allowance and cutting modes on the control panel of the process unit 24. The coordinates of the cutter profiles are recorded on a tape (punched tape, magnetic, etc.), which is set in the CNC device 23. the drive 13, the spindle with span 12 receives rotation through the worm pair 14 and at the same time the translational motion through the guitar of the interchangeable gears 15 and the fist of the relief 16. The rotational and translational movements give the spindle with the extension into the sum e Backing movement. The command to the stepper drives 17, 20 and 22 to move the grinding heads 3, 4 and 10 and to the table 2 is supplied from the command cam 26 by means of an electric sensor 25 and a CNC device 23. Correction of the pr profile,

Claims (1)

/ 7 tons of cutting is performed by replacing the tape in the CNC 23. Such a machine design allows to adjust the work of the spindle heads, which improves the machining accuracy. The invention The machine for sharpening circular incisor grooves simultaneously on all three cutting surfaces, contains three grinding headstocks with feed mechanisms, installed with the possibility of reciprocating movement, and a headstock of the product, the spindle of which is associated with a single program with grinding heads, differing the fact that, in order to improve the accuracy of sharpening by reducing kinematic chains, two grinding headstocks for machining the side surfaces of the tool are mounted on a table inserted into the machine, The product table, table and both grinding headstocks are installed with the possibility of counter-reciprocating movement, with the product heads and table equipped with feeding mechanisms, and a third of the grinding heads for machining the tool nose is mounted with the possibility of rotation relative to the axis parallel to the axis of the product spindle; The feed mechanisms of the two grinding heads are kinematically connected with a single drive. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 123050, cl. B 24V 3/34, 1959.