SU1379527A1 - Arrangement for converting rotary motion into resiprocating motion with stay in extreme positions - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in mechanisms for converting movement. The purpose of the invention is to increase the load capacity of durability by eliminating the cantilever arrangement of the drive and intermediate shafts and simplifying the design of the mouth

Description

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roystva When the drive shaft 3 rotates, the rotation through gears 4 and 20 is transmitted to the intermediate shaft 19, the gears 21 and 22 of which ensure the movement of the closed rails 7 and 8 and the driven link 9 rigidly connected with them. At this, the rollers 14 and 15 roll in the cams 10 and 11, fixed on rails 7 and 8, after the protrusions of the slave link 9 enter into interaction with the rollers 5 and 6, the slave link 9 stops heating, the rollers 14 and 15 run around the cree1

The invention relates to mechanical engineering and can be used in mechanisms for converting movement, for example, in press-forging equipment drives.

The purpose of the invention is to increase the load capacity and durability by eliminating the console on the location of the drive and intermediate shafts and simplifying the design of the device.

FIG. 1 shows a device for converting rotary motion into reciprocating at extreme positions, a transverse section; in fig. 2 shows section A-A in FIG. one.

A device for converting rotary motion into reciprocating at extreme positions includes a housing 1 with a guide groove 2, a drive shaft 3 with gear 4 fixed on it and rollers 5 and 6, two closed gear racks 7 and 8 external gears , the slave link 9 rigidly connected with them, installed in the guide groove 2 with the possibility of translational movement, the cams 10 and 11 and the protrusions 12 and 13 rigidly connected with the follower link 9. The cams 1 (1 and 11 interact with the rollers 14 and 15. In addition, the device contains t the switch unit of the rails, made in the form of a disk 16, which is installed with the possibility of rotation of the driver shaft of the driving shaft 3 to the sub-cam portion of the cams 10 and 11, and the disk 16 starts to rotate on bearings 17 and 18 relative to the axis of the driving shaft 3 at the same time, the intermediate shaft 19 with gears 21 and 22 and rollers 14 and 15. Pass the curved sections of the rails 7 and 8, gears 21 and 22 are engaged with the rails 7 and 8 from the bottom, the rollers 14 and 15 start to run around the straight sections again. cams 10 and 11, and slave link 9 moves in opposite 2 sided ill.

grippers 17 and 18. Communication between gear 4 of drive shaft 3 and toothed racks 7 and 8 is carried out via a CTF3OM intermediate shaft 19 with gears 20.21 and 22 fixed on it and sliding rollers 14 and 15. Herewith gear wheel 20 interacts with gear 4, rollers 13 and 15 roll in cams 10 and 11,

whose profiles correspond to the contour of the toothed racks 7 and 8. The drive shaft 3 is installed in bearings 23 and 24 of the housing 1, and the rollers 5 and 6 located on it, interacting (with the projections 12 and 13, hold the driven member 9 in the extreme positions the shaft 19 is mounted in bearings 25 and 26 on the disk 16.

Device to convert

rotational movement in reciprocating with extremes in extreme positions works as follows.

When the drive shaft 3 rotates, the torque through gears of gear 4 and gear 20 is transmitted to intermediate shaft 19, gears 21 and 22 of which ensure the movement of closed gears

rails 7 and 8, as well as the associated slave link 9 in the direction corresponding to the rotation of the drive shaft 3. At the same time, the rollers 14 and 15 roll the cams 10 and 11. After the projections 12 and 13 come into contact with the rollers 5 and 6, stop and hold the slave

the link 9, the rollers 14 and 15 begin to roll the curved section of the cams 10 and 11, and the disk 16 begins to rotate on bearings 17 and 18 relative to the axis of the drive shaft 3, thereby moving the intermediate shaft 19 with gears 21 and 22 and the rollers 1A and 15. Passing the curvilinear section of the toothed racks 7 and 8, gears 21 and 22 are engaged with the racks from below, while the rollers 14 and 15 begin to roll in the straight sections of the guide cams 10 and 11, which is accompanied by a change in the direction of movement of the driven link 9.

In the extreme positions of reciprocating movement, the driven member 9 has a short lag

Claims (1)

Invention Formula A device for converting rotary motion into reciprocating with extremes in extreme positions, comprising a housing with a guide groove, mounted in a groove with the possibility of reciprocating movement of the driven member, the vertical shaft with rigidly fixed gears on it, two gear racks rigidly fixed on the driven link, one of which is external gearing, the cam rigidly attached to the last, the rollers interacting with the cam, the rack switching unit and the intermediate shaft installed in it with two intermediate gears differing in that, in order to increase the load capacity and durability, the second rail is also made with external gearing and is located symmetrically first with respect to the gear, the driven link is fitted with protrusions, the rollers are installed on the intermediate shaft, the 1st shaft is mounted in the housing, the rail switch assembly is made in the form of a disk mounted rotatably relative to the drive shaft, and the device is equipped with a second cam rigidly mounted on the second rail, also for interaction with the rollers, an additional gear wheel mounted rigidly on the intermediate shaft to interact with the second rail, and additional rollers mounted on the drive shaft for engagement with the protrusions of the driven member. 12 ton 9 Fi.2