SU1426742A1 - Arrangement for clamping and turning parts - Google Patents

Abstract

The invention relates to the processing of materials by cutting, in particular, to devices for fixing large parts that need to be rotated on metal cutting machines, which allows an increase in the accuracy of the base and rotation of the parts. On the housing 1 there is a vertical plate 2 with a clamping surface A in contact with the end surface of the part 3. In the opening B of the plate 2, an expandable collet 4 with a tapered bore B is installed, and the external surface is stepped with a ledge G. The external surface of the collet 4 serves as a base for details 3 and is in contact with its inner surface. On the other hand, in the working position, the part 3 holds a spherical tip / stop 5 fixed in the rod 6 of the pneumatic cylinder 7 fixed on the bracket 8 rigidly connected to the housing 1. In the housing there is a separating unit containing the separating drum 9 with curvilinear grooves D interacting with the roller finger 10, rigidly mounted on the movable sleeve E of the actuator-pneumatic cylinder 11, moving the rod 12 fixedly fixed in the body 1. With the walls of the conical bore-. In the collet 4, the ball contacts the spherical tip 13, pressed against the collet by the rod 14 of the pneumatic cylinder 15. The drum 9 is rigidly connected to the collet 4. The force of the pneumatic cylinder 15 is greater than the force of the pneumatic cylinder 7 installed with it. To rotate part 3, increase the pressure in the valve - the cylinder 15, the rod 14 presses the ball 13 and pushes the collet 4 forward together with the part 3, which ceases to contact with the vertical plate 2. Then the pressure in the pneumatic cylinder 11 increases and the movement of its movable body is provided by means of a finger 10 and drum 9 rotate together with the collet 4 and the workpiece 3. 1-yl, / / i (A

Description

The invention relates to the processing of materials by cutting, in particular to devices for fixing large parts requiring turning on metal-cutting machines.

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The aim of the invention is to improve the accuracy of the base and rotation of the part.

The drawing shows the proposed device, a longitudinal section,

; On the housing 1 centrally secured is a vertical plate 2 of the clamping unit with; a clamping surface A, which is in contact with the end surface of the part 3. In opening B of plate 2, an expandable collet 4 is installed, the internal cavity of which ends with a conical hole B, and the external surface Completed with a stag with step ledge G. 11 cylindrical front surface of a larger diameter of collet A, protruding behind plate 2, serves as a component for part 3 and contacts the inner surface forming the aperture. On the other hand, in the working position, part 3 is held by a Spherical tip — an emphasis 5, which is closed in the rod 6 of the pneumatic cylinder 7, which is fixed on the bracket 8, which is rigidly connected to the housing 1.

The housing 1 contains a dividing unit, including a drum 9 with curved grooves D, interacting with a roller pin 10 rigidly mounted on a movable sleeve of a pneumatic cylinder actuator 11 moving along a rod 12 fixedly mounted in case 1.

A spherical tip-ball 13 is attached to the walls of the tapered hole B of the collet 4 and fixed to the rod 14 of the pneumatic cylinder 15. The bar 9 is rigidly connected to the collet 4.

The force of the pneumatic cylinder 15 is greater than the force of the pneumatic cylinder 7 coaxially installed with it. In the plate 2, the adjusting fingers 16 and the ejector fingers 1 7 are fixed, if necessary.

The device works as follows.

Item 3 is set with the base end on plate 2 so that it sits with the inner hole on the clamping surface of the collet 4 and, if necessary, on an additional base element — the installation fingers 16

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d

five

five

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and then press the spherical stop 5.

To rotate the part 3, the pressure in the pneumatic cylinder 15 is increased, the rod 14 of which presses the ball 13 on the collet 4, and it, moving forward, rests on the ledge of the part 3 and removes it from contact with the clamping surface A of the plate 2 and further removes the adjusting pins 16 , the force of the pneumatic cylinder 7 with an emphasis 5 is predetermined. Part 3 is ready for rotation.

To rotate, the part 3 increases the pressure in the pneumatic cylinder 11, the movable sleeve E of which moves back and forth along the non-SUBSTITUTE rod 12, and the finger 10 slides along the curvilinear groove of the drum 9, turning the latter. Since the drum 9 is rigidly connected to the collet 4, the collet 4 also rotates, pulling the piece 3 after itself. After turning the piece 3 to the required angle, the pressure is removed from the pneumatic guide 11 and 15 and under the pressure of the spherical stop 5 the piece 3 is shifted to its original position the position together with the collet 4 and the drum 9, while the ball 13 stops pressing on the petals of the collet 4 and the part 3 is completely based on the plate 2 and the cylindrical surface of the collet 4.

At the end of processing relieve pressure from the pneumatic cylinder 7 and release the item with 3 fingers 17.

Formula inventions

A device for clamping and rotating parts, comprising a separating unit placed in a housing, made in the form of a drum with curvilinear grooves, the walls of which are designed to interact with a finger by means of an actuator, and a clamping unit coaxially connected to the drum that is rigidly connected drum, characterized in that, in order to improve the accuracy of the base and rotation of parts, the clamping unit is made in the form of a vertical plate with a collar ojBepcTHeM and two coaxially collet arranged for both opolozhnyh its sides cylinders, rods are provided with spherical nakonechg nicknames, thus formed in the collet

31A26742, A

the step-like outer surface and the inlet of the dividing unit are made into a viconical opening, the walls of which are fixed in its case by the rod of the rod are designed to interact the pneumatic cylinder with the movable sleeve,

with a spherical tip, one designed to accommodate the palises of these pneumatic cylinders, and a pr-tsa.

Claims (2)

Claim A device for clamping and turning parts, comprising a dividing unit located in the housing, made in the form of a drum with curved grooves, the walls of which are designed to interact with the fingers through the drive, and a clamping unit, collet coaxially mounted with the drum, which is rigidly connected to the drum, characterized in that from ¹ to improve the accuracy of deployment and rotation parts clamp assembly is configured as a vertical plate designed to accommodate a collet opening and arranged coaxially to the two collets both straight opposites sides of its cylinders, rods are provided with spherical-tipped, wherein formed in the collet •> 5 3 1426742 4-step outer surface and a conical hole, the walls of which are designed to interact with the spherical tip of one of these pneumatic cylinders, and when the dividing unit is made in the form of a pneumatic cylinder fixed in its body with a movable sleeve designed to accommodate a finger.