SU779015A1 - Double-station indexing device - Google Patents

Description

I

The invention relates to a machine tool and can be used in rotary dividing devices for simultaneous processing of several parts on milling machines. / Known double del.t. Z.noe usrystv with a worm | rm Yovorota faceplate 1. The purpose of the invention is to ensure the accuracy of turning around the back of the plate.

The goal is achieved by the fact that the screw to the actuator is made of two with oppositely directed turns, and part of the screw is mounted with the possibility of independent reciprocating movement in the direction of its own axis.

The drawing shows the kinematic scheme of the two-person dividing device.

The device consists of a housing I, in which there are two faceplates 2 and 3, equipped with mechanisms of rotation 4, fixation 5 and clamp 6.

The rotation mechanism 4 consists of worm gears 7 and 8, fixed on faceplates 2 and 3 and engaged with the right 9 and left 10 worms, installed with the possibility of axial movement

on shaft 11. Shaft II is kinematically connected by means of a friction clutch 12 with re. versatile drive 13. On shaft 11 between the right 9 and left 10 worms there is an adjustable sleeve 14 installed

- also with the possibility of axial displacementHHtf

The locking mechanism 5 consists of separating discs 15 and 16 with slots sloped on one side, fixed on the faceplates of clamps 17 and 18. The number of slots of the separating disc can be different depending on the technology of the part, for example 3, 4, 6, etc. Latch 17 is connected to a limit switch 19 mounted on housing 1.

The clamping mechanism 6 consists of hydrocylinders 20 and 21, the rods of which pass through faceplates 2 and 3.

Double dividing device operates as follows.

On faceplates 2 and 3, the workpieces are installed, clamped from the hydraulic cylinders 21 and 20. When the reversing drive 13 is turned on, rotation is transmitted to the shaft 11 and the screws 9 and 10 located on this shaft. Worm screws 9 and 10, rotating, transmit the turning movement to the worm wheels 7 and 8, which are fixed on the necks of the face plate 2 and 3 with separating discs 15 and 16.

When, for example, the locking pin 17 enters the groove of the separating disk 15, the worm to 9 starts to move in the direction from the worm 10, but do not grind, while the worm to 10 continues to turn the disk 16 until the locking pin 18 is in its groove. When locking the lug 18 into the groove of the disk 16, the screw to 10 starts to move, moving in the direction opposite to the screw 9. Such mixing is caused by different directions (left and right winding) of the screws and the possibility of their movement in the axial direction. When the spring-loaded clips 17 and 18 fall into the grooves of the indexing discs 15 and 16, a command is sent from the end switch 19 to reverse. Worm screws 9 and 10 begin to twist towards each other and lock on an adjustable sleeve 14. The separating dials 15 and 16 are pressed to the latches 17 and 18, the shaft 11 stops and the reversing drive 13 is turned off. what the faceplates turn to the next position.

Claims (1)

Invention Formula A two-person dividing device with a worm drive for turning faceplates, characterized in that, in order to ensure the accuracy of rotation of both faceplates, the worm to the drive is made of two parts with oppositely directed coils, each part of the screw being installed with the possibility of an independent reciprocating HORQ movement in its own direction axis. Sources of information taken into account in the examination 1. B. Teplitsky, G. Mazo. Separating mechanisms. L., “Mechanical Engineering, 1974, p. 72-74, fig. 32.