SU992131A1 - Rotary clamping chuck - Google Patents

Description

(54) ROTARY CLAMP PATRON

one

The invention relates to a machine tool industry and can be used in the machining of parts from two sides on lathes.

A cartridge is known, comprising a housing, a mechanism for moving the clamping cams, and a mechanism for rotating the article with an actuator by means of hydraulic cylinders 1.

The disadvantages of the known cartridge are the design complexity and limited technological capabilities.

The purpose of the invention is to simplify the design and expand its technological capabilities.

This goal is achieved by the fact that in the cartridge comprising a housing, a mechanism for moving the clamping cams and a mechanism for rotating the product, driven by hydraulic cylinders, the plunger of the hydraulic cylinder of rotation is housed in a transverse bore made in the housing, and on the plunger there is a toothed rack and fixing the position of the platform cam, and The cam has a toothed sector and two parallel locking areas designed to interact with the plunger pads.

In addition, the cam associated with the pivot mechanism is mounted in the housing with the possibility of axial movement and provided with a mechanism for fixing the axial position.

5 Expansion of the technological capabilities of the cartridge allows processing of parts of various sizes along the outer diameter, and simplifying the design reduces the time required to rotate the part and increases the reliability of the device. FIG. 1 shows a cartridge in cross section along cam axles; in fig. 2 shows section A-A in FIG. one; in fig. 3 - section B - B in FIG. I; in fig. 4 is a view of B in FIG. 2; in fig. 5 is a section of YYD in FIG. four.

15 The cartridge comprises a housing 1, in which transverse cam 2 and clamping cam 3 are mounted in transverse bores. A gear sector 4 and fixing platforms 5 are made on the rod of the rotary cam 2. The teeth 4 of the sector engage with the teeth 6 of the rail made on the plunger 7, mounted in the transverse bore of the housing 1. On the plunger 7 also made fixing pads 8, interacting with pads 5 in the working position. The cam shaft 2 is connected with the screw 9 to the threaded sleeve 10 and interacts with the end part with the sleeve through the bearing 11. The sleeve 10 is locked in the working position with the help of the strap 12 fixed to the body 1 with screws 13. From the inner side of the strap 12 threaded grooves coinciding are cut with threaded grooves in the housing 1 under the sleeve 10. The cam 3 is connected to the piston 14 by means of Wijta 15 and interacts with the front side with the piston through the supports 16. There is an annular bayade 17 attached to the housing 1. In the bore under the plunger 7 there are roofs KI 18, 19 and formed working cavities 20, 21, in the bore under the piston 14 a cover 22 is installed, fixed by a bandage 17, and working cavities 23, 24 are formed. The cavities 20, 21, 23, 24 are connected through channels (not shown) in the housing 1 with system | 10 problems and draining the working fluid.

The cartridge works as follows.

When loosened the screws 13, the rotation of the sleeve 10 adjusts the position of the clamping cam 3 to a certain diameter of the workpiece 25. After adjustment, the sleeve 10 is locked with a strap 12 by tightening the screws 13. Part 25 is installed between cams 2 and 3. Feed the working fluid under pressure into the cavity 23 the cam 3 is moved and the workpiece 25 is clamped between the cams. By supplying the working fluid under pressure, for example, to the cavity 21, the cam 2 is fixed in a certain extreme position. The fixation is carried out by the platform 8 of the plunger 7 when interacting with the platform 5 of the cam shaft 2. In this case, the cavities 20 and 24 are connected to the drain. After processing one side of the part 25, the working fluid is supplied to the cavity 20, and the cavity 21 is connected to the drain. By moving the plunger 7 and the interaction of the rack and pinion gear, the cam 2 is rotated 180 ° and rotates the part 25 with the cam 3. In

the second extreme position, the cam 2 is also fixed by the pad 8 when interacting with the pad 5. To release the part 25 from the cams 2 and 3, the working fluid is fed into the cavity 24, and

cavity 23 is connected to the drain. Using the piston 14, the cam 3 is retracted from the part 25.

The positive effect from the application of the proposed cartridge lies in expanding the functionality by adjusting the position of the cams to the processing of parts of various sizes with respect to the outer diameter, reducing the time to turn and fixing the cams with the workpiece by 180

by single stroke of the cam-cam piston.

Claims (2)

1. A rotatable chuck comprising a housing, a mechanism for moving the clamping cams and a mechanism for rotating the product, driven by hydraulic cylinders, characterized in that simplifying the design, the plunger of the hydraulic cylinder of rotation is housed in a cross-boring bore made in the body, with the gear rake made on the plunger and the pad position fixing the cam position, and the gear casing is made on the cam a sector and two parallel locking pads designed to interact with the plunger pads. 2. A cartridge according to claim 1, characterized in that, in order to expand the technological Possibly, the cam associated with the pivot mechanism is mounted in the housing with the possibility of axial movement and provided with a mechanism for fixing the axial position. Information sources, taken into account during the examination 1. USSR Copyright Certificate No. 719812, cl. B 23 B 31/34, 1977. w hfig. i 9/5 A / 7 11 VZ FIG. 2 ZZZZZZZ