SU716804A1 - Device for press-fitting sleeves - Google Patents

Description

one

The invention relates to mechanical engineering and can be used in various fields during repair work, in particular for the repair of internal combustion engines.

A device for repressing the camshaft bushings is known, which contains a stepped mandrel and a set of glasses, the outer diameter of which is a fit for the pressed-in and repressed sleeves 1.

The underside of this device is that it does not exclude errors when combining the lubrication holes of the sleeve and the socket of the engine block.

The closest to the technical essence of the proposed is a device for pressing the camshaft bushings into the engine diyidrov block of the internal combustion engine, which contains a stepped mandrel and a cup placed on it, in the grooves of the inner surface of which | Plate springs with JUMH jaws centering and holding cams are placed; press the plugs into the sockets 2.

The disadvantage of this device is that it does not ensure the coaxiality of the lubrication holes of the sleeve and the socket of the internal combustion engine engine block.

The purpose of the invention is to automatically ensure the alignment of the lubrication holes of the sleeve and the socket of the block of shinshr and improve the quality of pressing.

This is achieved by the fact that in the proposed device each glass is made with two radial holes located in the same plane on its forming surface, into which spring-loaded clamps of the sleeves are installed with the possibility of radial movement. The device is also equipped with agablon sleeves with a groove for the passage of clamps.

Claims (2)

FIG. 1 shows a device for pressing in sleeves in a section in the case of alignment of the clamp of the sleeves and the lubrication hole of the socket of the cone block; in fig. 2 the same, in case of misalignment of the retainer sleeves and the lubrication hole of the cylinder block; in fig. 3 - the same, in the case of the insertion of the template sleeve and the combination of the lubrication holes of the block socket and the plastic brackets of the sleeves; FIG. 4 shows a sleeve-template e p83 cut; in FIG. 5 a section A-A in FIG. 1 is rotated without a mandrel. The device contains a stepped mandrel with annular grooves 2 and a stack set oa Glass 3 has a bushing diameter for a compression bushing 4, a worn bushing 5 or a template bushing 6, and a thrust collar 7, Clamps 8 and 9 are installed in one rujokosti on forming the cylinder of the glass, and (the method is spring-loaded plate 12, fastened with a screw 13 in the longitudinal groove 14 of the cup 3. In this box, the template 6 has a groove 15 for the passage and placement of the lock 9 performed The longitudinal grooves 17 and 18. The device works as follows. A press sleeve 4 is installed onto the cup 3 as far as it will go into the collar 7 and the spherical head of the retainer 8 and the hole 10. Cylinders, in its absence into the sleeve-template 6, turn it up to s & a retainer 9 under the action of the plate spring 12 into the lubrication hole 20 of the cylinder block 19. This ensures alignment of the holes 20 and 11. A step mandrel 1 is inserted into the grooves 17, 18 of the cup 3, turned around an angle of 45 - | - 120, and axial force is applied to it to repress the bushings. After repressing, the worn sleeve 5 or sleeve template 6 is removed from glass 3 and a step mandrel 1 is removed from it. Glass 3 is removed from press sleeve bushing 4, with retainer 9 retracting (if the template sleeve is used) to the surface of the yakan. The use of the proposed device automatically ensures the alignment of the lubrication holes, as a result of which the quality of engine repairs is improved. Claim 1, A device for pressing the camshaft bushings into the cylinder block of an internal combustion engine, comprising a stepped mandrel and a cup placed on it, characterized in that, in order to automatically ensure the coaxiality of the lubricant holes of the sleeve and the cylinder block socket and improve the quality of fitting, each cup made with two radial holes, found ishmis in the same plane on its forming surface, in which the spring is installed with the possibility of radial movement these clips of plugs. 2. The device according to claim 1, of which it is provided with sleeves-templates with a groove for the passage of clamps. Sources of information taken into account in examination 1, Copyright certificate CCCPNM92682, cl. B 25 B 27/02, 1961. 2. USSR author's certificate number 458428, cl. B 25 B 27/02, 1973 (prototype). USH :///////////BUT FIG. Figz 1e 5