SU1310161A1 - Device for two-side assembling of parts by press-fitting - Google Patents

Abstract

The invention relates to machine-assembly production, in particular, to devices for two-sided assembly of press joints} of shaft-bushing parts. The aim of the invention is the expansion of technological capabilities by providing an assembly of parts with thin straight rod parts varying significantly in length. The device contains mounted on the base

Description

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The invention relates to mechanical assembly production, in particular to devices for press-fitting tips to the ends of a long thin-walled tube.

The aim of the invention is to expand the technological capabilities of the device by providing a press-fit of the tips to the ends of the pipes, which differ significantly in length.

FIG. 1 shows a general view of the device, FIG. 2 - the same plan view; in fig. 3 shows a driven carriage with a mandrel; FIG. 4 is a view A of FIG. 3; in fig. .5 - transmission with mandrel; FIG. 6 - lodgement in the plan; in fig. 7 is a view B in FIG. 6, in FIG. 8 is a sectional view BB in FIG. G, FIG. 9 is a view of FIG. eight.

The device comprises mounted on base 1 coaxial mandrels 2 and 3. The drive mandrel 2 is connected by a transmission mechanism to the actuator cylinder 4. The gears 11 are located on the base 1 between the mandrel 2 and the cylinder 4. The mechanism includes a carriage 5 on which the block 6 is mounted. To the block 6, the mandrel 2 is attached to the block 6 with a clamp 7, connected through lever 9 to the cylinder 4. On the right side of the section 10, the cracker 8 acts on the plunger 11, which is spring-loaded in the carriage 5 by the spring 12. On the left side, the cracker 8 rests on the flange of the rod 13. A spring 14 is placed between the flange of the rod 13 and the wall of the carriage 5. In the zone of movement of the end of the rod 15 of the cylinder 4 base 1 is mounted the block of lugs 16, which is a drum, on the right side of which there are lugs defining the stroke amount of the rod 15 during press changeover. The latch 17 by means of a spring 18 provides a predetermined position to the block stops.

The cradle is made adjustable in length and from elastic interconnected plates 19 attached on both sides to extreme rigid plates 20 and 21. Plate 20 is attached to ocHOBaHtno 1, and plate 21 to the carriage on which the mandrel 3 is installed. The plates have in the middle lower part the protrusion 22, which fits into the groove of the base 1 and orient the position of the cradle as a whole.

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The knife is provided with a rotatable locking clamp for the core part and is also adjustable in length and elastic in interconnected plates 23. These plates are located on a square shaft 24 with the possibility of movement along it. The end plates 25 and 26 of the clamp are also rigid. Ball 24 has cylindrical necks at the ends and is mounted by them in supports 27 mounted on base 1. Plates 25 and 26 are fixed on the square part of shaft 24 by terminal clamps with screws 28. Mandrel 3 is mounted on carriage 29, which can be longitudinally moved basis 1 when changing the device. The carriage 29 is provided with a screw mechanism for moving along the grounded one and fixing relative to the base. The lead screw 30 of the mechanism, fastened with the handle 31, is mounted in supports placed in the base 1 and the bracket 32. The nut 33 of the mechanism coupled to the screw 30 is made in the head of the rod 34 with the nut 35 for fixing the carriage 29. I

The mandrel 2 includes a housing 36, which is a cylinder with a flat for mounting the part to be pressed. At the bottom of the flats, a hole is made into which the shank 37 of the sticking piece 38 enters. The latter serves for fixing the pressed-in part. To adjust the gap between the sticking and the wall of the hole of the pressed-in part, the stop 39 is provided in the mandrel 3.

The device bed makes it possible to install core parts on it, not only significantly differing in length (130-1200 mm), but also parts of different diameters (6-12 mm). In this case, the coaxiality of the core and the pressed-on parts is ensured by the fact that the diameter of the cylindrical section P is different for all interchangeable mandrels.

To facilitate the removal of the assembled unit, ejector 40s are provided. These ejector heads are designed as levers that pass through rigid plates of the cradle and are attached to the end pads 41 and 42 at the ends. Pad 41 is mounted on the base and pad 42 is mounted on the carriage 29.

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The device for two-sided spraying the part works as follows.

Press the tip 43 down onto the tack 38 to touch the bottom of the flats with the mandrel 2. Shift the tip 43 to the left to align with the stop 39. The upper end surface of the tip 43 is located under the tang 37 of the sticking 38, and between the clamp 38 and the wall of the hole of the tip 43 there will be a gap. The nozzle 43 is also installed in the mandrel 3. The rod part, in yes} case pipe 44, is inserted into the chamfer of the tip 43 installed in the mandrel 3. Slide the carriage 5 to the left until it stops at the section 10 of the cracker B. Lay the pipe 44 on the cradle and release the carriage 5, the plunger 11 by means of the spring 12 returns the carriage to its previous position. Rusk 8 in this case is fixed. The pipeline occupies a position between the chamfers of the tips. Air is fed into the cylinder of the drive (not shown) of the clamp. The clamp covers the pipe 44, not allowing it to bend when pressing on the tips. Air is fed into the right cavity of the device drive cylinder. The upper arm of the lever 9 turns to the right and informs the displacement of the cracker 8 to the right. Cracker 8 moves the carriage 5 to the right too, and with it the block 6c with the mandrel 2. The left handpiece moves the pipeline towards the right handpiece (stationary). In this case, after selecting the gaps between the parts assembled, the tips are pressed onto the pipeline. After pressing in, the actuator returns to the initial position at the 1-km pipeline, and the rod 15 of the cylinder 4 moves to the right. The upper end of the lever 9 rotates to the left, and with it the cracker 8 is displaced to the left. After selecting the gap between the left side of the biscuit 8 and the collar of the rod 13, the carriage 5 moves to the left until the gap between the left side of the grip 38 and the wall is selected hole tip 43 (Fig. 3). After that, the carriage stops, and the cracker 8 continues to move to the left and, compressing the spring 14, moves the rod 13 relative to the carriage 5, until the rod 15 of the cylinder 4 stops.

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ejector 40 remove the assembled node from the working area of the device. Spring 14 returns the carriage 5 to KpafiHee left position. The device is ready for the next cycle of work. During the readjustment of the device for assembling the pipeline, the other lengths loosen the nut 35 and, by rotating the handle 31, move the carriage 29 to the desired position and fix it with the nut 35. At the same time, the part of the cradle fastened to the carriage 29, on which the mandrel 3 mounted on the carriage 29 is mounted, also move. The reservoir, due to the elastic and interconnected plates 19, will change its position in length. The terminal clamps of the restrictor plate 26 are loosened and, along the shaft 24, the limiter plate is shifted, changing its length in accordance with the length of the cradle. After that, the plate 26 is again fixed with a clamp terminal. The stop block 16 is rotated to a position corresponding to the required stroke length of the cylinder 4 rod. When the device is retooled for another pipeline diameter assembly, replaceable mandrels 2 and 3 are replaced.

Claims (1)

Invention Formula A device for two-sided assembly of parts by pressing, comprising carriages supporting the pressing mandrels mounted coaxially on the base, one of which is connected with the drive for moving it, and a cradle for accommodating the base part with a clamp, which is designed to expand technological capabilities pressing the nozzles onto the ends of the pipes, which are significantly different in length, the cradle and the clamp are made adjustable in length in the form of a package installed with the possibility of axial movement of the plates the outermost of which are rigid and the middle ones elastic, with each plate being connected at one end to an adjacent plate located on one side and the other end to an adjacent plate on the other hand, the cradle plates are made in the middle part with a groove for accommodating the base parts and a guide protrusion, the base is made with a guide longitudinal groove, the lodgement plates are installed with guide pins 5P the clamping plates are mounted with the possibility of angular fixing one relative to the other and joint angular displacement relative to an axis displaced relative to the axis of the assembly; the displacement drive of one of the carriages is made in the form of a power cylinder, / 6 7 616 the lever is connected with the specified carriage, and the second carriage is installed with the possibility of adjustable movement, while one of the extreme rigid plates of the cradle facing the drive carriage is fixedly mounted on the base, and the other extreme plate is connected with the adjustable carriage. (pue.Z ffnff.3 Buff a 38 Sriga  /  N  I M j SD V I VfyvVxXH 11 I I -CH- 5 seFig 6 In id 6 20 + Have I h-- / 40 with 1 2.7 28 Zlf Bud T turned "-r Z3 Fia9 Editor A.Gulko Compiled by N.Pozhidaeva Tehred N.Glushchenko Proofreader M.Sharoshi 1851/12 Circulation 976 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4