SU1256878A1 - Pneumatic clamping chuck - Google Patents

Description

The invention relates to a machine tool industry, in particular to devices for positioning and fastening products with a non-circular cross section.

The aim of the invention is to improve the accuracy of the base of products with a non-circular cross section.

FIG. 1 shows the proposed cartridge, cross section; in fig. 2 shows section A-A in FIG. one; in fig. 3-8 — option 3 and the collet 2 are in the expanded state and the pins 5 with segments 6 are retracted to the collet 2 from the center of the cartridge.

The blank 13 is installed in the orienting sleeve 4 and compressed air is fed through the opening 9 into the pneumatic chamber 8. The flanges 10 of the pressure element 3 made of rubber seal the pneumatic chamber 8, the latter is elastically deformed and fills the grooves 11, after which the equalization of the orienting sleeve occurs 10-dimensional compression of the collet 2 under the influence of various cross-sectional shapes of the pressure element 3. The collet 2 presses on

segments 6, which, having overcome resistive products.

The pneumatic clamping chuck includes a housing 1 in which a collet 2 is installed, which cooperates with the pressure element 3, orienting the sleeve 4, in the radial openings of which clamping plugs 5 are rigidly connected to the segments 6 and flat springs 7 located between the sleeve 4 and the segments

15

The springs 7 move the clamping pins 5 until they come into contact with the surface of the product 13 and secure the latter.

Essential in this construction is that the fixed product is pre-oriented in the orienting sleeve of the cartridge, and then finally fixed and fixed by clamping

6. The inner surface of the housing 1 and the 20 pins, which are in contact with the concrete element 3, form a pneumocamera profile sections, from the base to

which determines the final accuracy of the processed product.

8, communicating with a hole 9 with a source of compressed air. The pressure element 3 contains flanges 10 for sealing the pneumocamera, and grooves 11 are made in the housing 1, which serve for fixing the pressure element 3 in a compressed state. The orienting sleeve 4 contains longitudinal grooves 12, made respectively in the shape and size of the transom 25.

The use of grooves in the orienting sleeve corresponding to the protrusions of the fixed product, with some complication of the cartridge, allows to increase the accuracy and reliability of the base. Such a constructive decision is advisable to use

river section of the product. The number and distribution of products with a small number of the position of the clamping plugs 5 depends on the configuration of the fixed product.

The cartridge works as follows.

In the initial position, there is no overpressure in the pneumatic chamber 8, pressure elestep elements (e.g., blade cutters), as well as for asymmetrical profiles in order to compensate for the asymmetrical protrusion with a corresponding groove in the sleeve.

Step 3 and collet 2 are in the expanded state and the pins 5 with segments 6 are retracted to the collet 2 from the center of the cartridge.

The billet 13 is installed in the orienting sleeve 4 and compressed air is fed through the opening 9 into the pneumatic chamber 8. The flanges 10 of the pressure element 3 made of rubber seal the pneumatic chamber 8, the latter is elastically deformed and fills the grooves 11, after which equal segments 6 occur, which overcome resistance

The springs 7 move the clamping pins 5 until they come into contact with the surface of the product 13 and secure the latter.

Essential in this construction is that the fixed product is pre-oriented in the orienting sleeve of the cartridge, and then finally fixed and fixed by clamping

The use of grooves in the orienting sleeve corresponding to the protrusions of the fixed product, with some complication of the cartridge, allows to increase the accuracy and reliability of the base. Such a constructive decision is advisable to use

stepping elements (for example, shredding cutters), as well as for asymmetrical profiles in order to compensate for the asymmetrical protrusion with a corresponding groove in the sleeve.

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Editor M. Bandura Order 4865/9

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Phage.8

Compiled by L. Yarho

Tehred I. VeresKorrektor M, Samborska

Circulation 1001 Subscription

Claims (1)

PNEUMATIC CLAMP NOY CARTRIDGE, comprising a housing in which an elastic pressing element is located covering the collet, characterized in that, in order to improve the accuracy of basing profile products, the cartridge is equipped with an orienting sleeve mounted concentrically with a clearance inside the collet, with flat springs and segments located in the gap between the orienting sleeve and the collet and the clamping pins, rigidly fixed in segments and placed in radial holes made in the orienting sleeve. ΨίΙΖ. 1