SU1754931A1 - Device for centering and fixing parts - Google Patents

Abstract

Use: in mechanical engineering, in particular in devices for centering and fixing parts. SUMMARY OF THE INVENTION: The device comprises a hollow cylindrical body 1 with a threaded neck 2, a smooth section and a supporting surface perpendicular to it 4. In the case, respectively, a sleeve 5 and a nut 11 are installed on a smooth section and a threaded neck 2. b and flat end surfaces. The nut 11 is made with axial slots 7 which are evenly spaced around the circumference, in which rod-like threaded elements 10 are placed. The thrust sleeve 5 is installed with a stop with a flat end surface into the bearing surface 4 of the body with the possibility of being radial relative to the last movement. At the same time balls 10. partially arranged in sleeve 5 with the possibility of interaction with its cylindrical inner surface and inclined surface in the stop sleeve 5. 3 Il.

Description

The invention relates to mechanical engineering and can be used in detachable clamping connections.

It is known to connect parts using locking elements spread between the ends of the parts, one of which has a conical bevel, and balls located between removable gaskets installed on the sides of annular grooves diametrically opposite to the ball, made in joined parts in the shape of an equilateral trapezium, in which the locking elements are made of the form of shoes mounted on the end of one of the joined parts with balls in contact with a conical bevel on

the end of the other part and the groove provided on the shoe

The disadvantage of this design lies in the impossibility of compensating for the misalignment of the connected products with insufficient manufacturing accuracy.

The purpose of the invention is the expansion of operational capabilities, the possibility of unification and reduction of requirements for precision manufacturing.

This is achieved by the fact that a device for centering and fixing parts, containing elements of centering and fixing, a fixing element made in the form of an inclined end of one of the parts placed in the ball seat and the rod threaded element installed with the possibility of translational motion and

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interaction with the ball mounted in contact with the inclined end of the part is provided with a sleeve and a hollow cylindrical body with a threaded neck, a smooth section and a perpendicular to the last supporting surface, the centering element is made in the form of a stop sleeve with an inclined and flat end surfaces with axial nests evenly spaced around the circumference, in which rod threaded elements and balls are placed, the sleeve and nut are coaxially mounted

6 cavities of the body on the smooth section and in the threaded collar, respectively;

and with the possibility of radial relative to the last movement, while the balls are partially located in the sleeve with the possibility of interaction with the inclined surface of the stop sleeve.

Fig. 1 shows a device for centering and fixing parts, a general view; FIG. 2 is a section A-A in FIG. 1; on fig.Z - the device with the displaced axis.

The centering and fixing device consists of a body 1 with a threaded neck 2 and a support surface 4, on which the abutment sleeve 5 is supported, having the ability to move along the support surface, 4 (within the annular gap dz). The stop sleeve 5 is provided with an inclined end surface 6 and a slot 8 for the object to be centered. A support ring 3 is pressed into the housing 1, the cylindrical surface 9 of which serves as a side support for the balls 10. In the threaded neck 2 of the housing 1 there is a nut 11 with axially threaded sockets 7 equally spaced around the circumference, in which the rod threaded elements 13 are placed. The nut 11 has limiters 14 forming sockets 12 for coordinating the balls 10.

The device works as follows.

Moving the stop sleeve 5 along the support of the surface 4 of the housing 1 (within the annular gap of $ 6, the part or device mounted in the socket 8 is centered relative to the product 15, the rod threaded elements 13 being turned out of the screw sockets

7 as much as necessary for the free movement of the abutment lugs 5 (within the annular gap (32).

After centering, the stop sleeve 5 is fixed. The sleeve is fixed by the action of the threaded elements 13 on the balls 10, which causes the ball 10 to jam between the cylindrical surface 9 of the support ring 3 and the inclined surface 6 of the support sleeve 5, as a result of which the support sleeve 5 is rigidly fixed in case 1.

The amount of displacement of the stop sleeve 5 along the support surface 4 of the housing 1 in the directions indicated by arrows (see FIG. 2) is determined by the structural dimensions of the device.

The centered object can be any part or device that is fixed in the nest 8 of the thrust hub 5.

The proposed design of the device for centering and fixing parts allows to connect and center parts of various configurations while reducing the requirements for the accuracy of their manufacture.

Claims (1)

Invention Formula A device for centering and fixing parts, containing elements of centering and fixing, the fixing element is made in the form of an inclined end of one of the parts placed in the ball seat and the rod threaded element mounted with the possibility of translational motion and interaction with the ball mounted in contact with the inclined end of the part , characterized in that, in order to expand the operational capabilities, the possibility of unification and reduce the requirements for precision manufacturing, it is equipped with a sleeve and a hollow a horizontal housing with a threaded neck, a smooth section and a perpendicular to the last supporting surface, the centering element is made in the form of a thrust bushing with inclined and flat end surfaces, the fixation element is equipped with a nut with evenly spaced axial nests around which the rod threads are arranged and the balls, the sleeve and the nut are mounted coaxially in the housing cavity, respectively, on a smooth portion and about the threaded neck, and the stop sleeve is installed concentrically the last with focusing the flat end surface on the bearing surface of the housing and with the possibility of radial movement relative to the latter, while the balls are partially located in the bushing with the possibility of interaction with the inclined surface of the stop sleeve. I N) Sh fig.Z at