SU1207735A1 - Arrangement for driving machine spindle through oscillating motion - Google Patents

Description

The invention relates to polishing 1NDY or grinding products and can be used in polishing or grinding machines, for example, for polishing the necks of the crankshafts during their repair and restoration, in which the workpiece rotates and oscillates and the tool remains stationary.

The purpose of the invention is to provide optimal process conditions by achieving optimal ratios between the rotational frequency and the oscillation frequency and adjusting the oscillation amplitude.

FIG. 1 shows schematically an oscillation device; 2 is a section A-A in FIG. one.

. The mechanism includes a housing 1 with a sleeve 2 installed therein with the possibility of rotation, in which the spindle 3 is mounted with the possibility of axial movement. On the sleeve 2 there are rigidly fixed the V-belt transfer pulley 4 and the bevel gear 5. On the spindle 3 there are stops 6 and 7 in which The thrust bearings 8 abut the sleeve 9 with the trunnions 10, mounted in the holes of the cheeks of the fork 11 of the shaft 12 with the possibility of axial displacement. The shaft 12 is placed in the eccentric sleeve 13, which, in turn, is placed with the possibility of rotation in the glass 14 and has an eccentricity equal to it. In the upper part of the cup 14, a bevel wheel 15 is fixed, which engages with a bevel gear 5.

At the lower end of the eccentric bushing 13, a latch 16 is secured, which, with its tooth 17 enters the radial grooves 18, is made 1st at the lower end of the cup 14.

The device works as follows.

Rotational motion of the drive. through the V-belt transfer pulley 4, the sleeve 2, the spindle 3 and the bevel gear 5, which rotates the cup 14 through the bevel wheel 15, rotates the shaft 12, making circular motions, by means of the plug 11 moves the sleeve 9, which in turn affects the stops 6 and 7 through the thrust bearings 8, moves in the axial direction of the spindle 3 with an amplitude equal to twice the total eccentric system of the eccentric sleeve 13 and the cup 14.

If the oscillation amplitude needs to be changed, the retainer 16 is removed from the lower part of the eccentric sleeve 13 by the amount required for the output of the tooth 17 from the groove 18 of the cup 14, the eccentric sleeve 13 is rotated relative to the cup 14 and the retainer 16 17 has fallen into one of the radial grooves 18 of the cup 14 and is secured. The different positions of the axes of the eccentric sleeve 13 and the cup 14 allow to obtain a total eccentricity from zero to the sum of the eccentricities of the eccentric sleeve 13 and the cup 14

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Compiled by A. Shutov

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Order 131/17 Circulation 739 Subscription VNIIPI USSR State Committee 117p - .. ° inventions and discoveries, Raushsk emb. D. 4/5

Branch PPP Patent,

Claims (1)

DEVICE FOR REPORTING OSCILLATING MOTION TO THE MACHINE SPINDLE, comprising a sleeve installed in the housing, inside of which it is axially fixed. reciprocating movement of the spindle associated with the drives of its rotation and oscillation. and spindle stops, characterized in that, in order to ensure optimal technological modes, the oscillation drive is made in the form of a bevel gear and a gear, an eccentric sleeve, a shaft located inside it with a fork fixed to its end and installed in the fork with the possibility of interaction with stops of the spindle of the sleeve with pins, while the bevel gear is mounted on the S9 sleeve, and the bevel gear is kinematically connected to the eccentric sleeve. 12077