The method of obtaining compounds of covering and covered parts

 

(57) Abstract:

Usage: in mechanized production when receiving a press-fit connection covering and covered parts, the latter of which is made in the form smertnoi sleeve. The inventive smartnow sleeve is obtained by bending a sheet material and is installed in the hole covering the details. Then make rolling the inner surface of the sleeve for longitudinal movement Raskatov tool. When the direction of rolling at least one change to the opposite. 3 Il.

The invention relates to a mechanical Assembly production, in particular the production of forging connections details type shaft sleeve, and can be used in engineering, for example, in the repair and restoration of various holes.

The known method for obtaining compounds of covering and covered parts, the latter of which is made in the form smertnoi sleeve, including manufacturing smertnoi sleeve by bending a sheet material, the installation sleeve into the hole covering parts and the subsequent rolling of the inner surface of the sleeve for longitudinal movement Raskatov tool.

< which reduces the reliability of the obtained forging connections in operation.

The technical problem of the invention improve the reliability of the obtained compounds.

The task is solved in that in the known method for obtaining compounds of covering and covered parts, the latter of which is made in the form smertnoi sleeve, including manufacturing smertnoi sleeve by bending a sheet material, the installation sleeve into the hole covering parts and the subsequent rolling of the inner surface of the sleeve for longitudinal movement Raskatov tool in the process of rolling at least once change its direction to the opposite.

In Fig. 1 shows the connection covered and covering parts before operation rolling; Fig. 2 a fragment of a joint smertnoi sleeve after rolling; Fig. 3 scheme of the process of rolling joint smertnoi sleeve.

The method is as follows.

Covered in detail are in the form smertnoi sleeve 1 by bending a sheet material into a cylinder with an outer diameter less than or equal to the diameter of the hole covering part 2. To increase the strength of the landing on the mating surface of the cover part 2 can be executed grooves 3. Swerdna sleeve 1 is inserted into the hole ohvv the hole. Then make rolling the inner surface smertnoi sleeve 1 raschetnym tool 4 in its longitudinal movement of PCR. When the direction of rolling R at least once to change to the opposite-R. due To the fact that the most intense plastic flow of metal in the rolling process takes place on the inner surface smertnoi sleeve 1, it is the angular deformation of the joint smertnoi sleeve at an angle to the direction of rolling R. subsequent longitudinal movement of PCRRaskatov tool 4 after changing the rolling direction R on the opposite-R angular deformity of the joint sleeve is made on the angle, resulting in a scarf joint abutting edges smertnoi sleeve ABC, preventing their relative radial displacement. When another subsequent change to the direction of rolling from-R to R is formed lock connection bcd preventing both lateral and longitudinal displacement of the edges smertnoi sleeve one relative to another.

The METHOD of OBTAINING compounds of COVERING AND COVERED parts, the latter of which is made in the form smertnoi sleeve, including manufacturing smertnoi sleeve by a fold of the second surface of the sleeve for longitudinal movement Raskatov tool characterized in that in the process of rolling at least once change its direction to the opposite.

 

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