SU756095A1 - Apparatus for axial fixing of members - Google Patents

Description

The invention relates to mechanical engineering.

During deformation, the ring works on bending with an edge having an impure surface, the contour of which is formed during stamping (only the side surfaces of the ring are polished). Extreme fibers of the contour of the ring are under considerable stress during deformation of the rigid ring, because of which they form; cracks during installation, the value of which then increases. This leads to a reduction in ring durability.

To increase the strength of the rings during the transmission of axial loads and the elimination of ¹ - * their falling out of the shallow grooves during sharp shocks or when the working unit vibrates, devices are used to fix the rings from radial movement after it has been inserted into the groove.

A device for axial fixation of parts, containing a spring ring, a washer with shoulder and end washer [1]. 25

A burt washer, located between the ring and the thrust washer, does not eliminate some radial movement of the ring in the groove. Therefore, this ring may extend out of the groove or into the front. ”

2

load is lower than the calculated value.

It is also known a device for axial fixation of parts, containing a spring-loaded split ring mounted in an annular groove of one of the parts and secured from a spontaneous radial exit from the groove of an auxiliary washer fixed to the fixed part by known fastening means [2].

This device in its technical essence and the achieved effect is closest to the invention.

The disadvantages of this known device are due to:

- the complexity of the design due to the need to use an auxiliary washer, bolting the washer to the fixed part and its locking;

- overall limitations when drilling holes for bolts and when they are screwed;

• - insufficient strength of the spring ring, bending edge;;

- the inability to transfer increased loads.

756095

four

The purpose of the invention is to develop a device for the axial fixation of parts of a simplified design and to improve the durability of the split ring.

This goal is achieved by the fact that the ring is made in the form of a split cylindrical shell with a flange that has circumferential cuts around the circumference *, and the flange is installed in the annular groove of one of the parts with an emphasis on the cylindrical surface of the groove, and the shell interacts with the conical surface of another fixed part . ·

FIG. 1 shows a device for fixing a part on a shaft; in fig. 2 g - the same for fixing in the sleeve; in fig. 3 - outer spring split ring; FIG. 4 - an internal spring ring ring.

The device for axial fixation contains a spring-ring, made in the form of a split cylindrical shell 1 with a flange 2 having a notch 3 around the circumference. The flange is installed in the annular groove 4 on the shaft 5 or in the sleeve 6, and the shell interacts with the conical surface 7 of the part 8. The spring ring has a cut 9 and 10 holes for the installation tool. The annular groove is removed from the splined surfaces of the shaft or sleeve, so the ring perceives increased loads.

Installation of the device is as follows. With the help of mounting tools inserted into hole 35 of hole 10, the spring ring is pressed up to the shaft diameter when the part is fixed on the shaft or is pressed down to the hole diameter when the part is fixed in the sleeve. After removal of the mounting tool dd, the flange 2 comes in, due to the springing properties of the ring, enters the annular groove, and ‘keeps the ring on the shaft or in the sleeve from axial movement. Then, the fixed part 8 moves axially to the spring-loaded ring 45 and its conical surface 7 deforms the ring towards the surface of the shaft or sleeve, which is possible due to the springing properties of the ring and the presence of a cut 9 in the ring-50 'tse.

The choice of the angle of the taper of the part., The magnitude of the deformation of the shell 1 from the cylindrical shape to the conical and the length of the shell, must be such that 55

the ring with its spring properties and friction force provided the necessary two-side fixation of the part on the shaft or in the sleeve.

The proposed device has the following advantages:

1. Installation of the spring ring into the groove is facilitated, since it is much easier to deform the cylindrical shell than to bend a known spring ”ring along its edge. The flange with cuts does not prevent deformation of the ring.

2. Increases the durability of the ring with its frequent assembly and disassembly.

3. The reliability of fixation 15 is increased due to the possibility of manufacturing deeper annular grooves on the shaft or in the sleeve, transferring the loads to the larger surface of the spring ring and reliably pushing the ring

20 into the groove by the tapered surface of the fixed part.

4. Simplified design - for fixing parts on the shaft or in the sleeve requires the use of only

25 single snap rings.

Technical and economic effect of the proposed device is achieved by simplifying the design (reducing the cost of the device) and by increasing the durability of the spring ring.

Claims (1)

Claim A device for axial fixation of parts, containing a spring-loaded split ring installed in the annular groove of one of the parts and radially fixed by the conical surface of the other part, differing in the fact that, in order to simplify the design and increase durability, the ring is made in the form of a split cylindrical flanged shell having cuts along the circumference, said flange being installed in the annular groove of one of the parts with an emphasis on the cylindrical surface of the groove, and the shell interacting with the horse The surface of the other part.