SU1305085A1 - Device for step-by-step movement of satellites - Google Patents

Abstract

The invention relates to the field of mechanical engineering and is intended for use in factory automatic lines specialized in the machining of workpieces installed in devices-satellites (PS). The aim of the invention is to increase the reliability of the device. In the guides 6 of the frame 1 of the device, a carriage (K) 7 is installed with the possibility of reciprocating movement with a pusher in the form of a pin 10 for interacting with the stop surfaces located on PS 4. Pin 10 is installed with the possibility of vertical movement. Parallel to the guide 6, the driving rotary shaft 14 is mounted. On it are placed with the cams displaced along the distance of the step of movement and along the diameter of the shaft 14. Above K are guides 3 for PS 4. On the frame 1 there are stops 8, 9 of the extreme positions K 7. On K 7 there is a tongue 1 1 for fixing PS 4 and a spring-loaded pawl 12. It alternately interacts with the cams of shaft 14. On the frame 1 a hinged lever with a roller, which is a PS 4 cut-off mechanism. The roller is kinematically connected with pin 10 and interacts with stops 8, 9. In the initial position K 7 is pressed to stops 8 by force of a hydraulic cylinder 13. After receiving the first workpiece, the device performs a step. For this, pressure is supplied to the hydraulic cylinder 13 and K 7 moves forward until it stops with the pawl 12 into the cam of the shaft 14 and is loaded. In the second step K 7, the dog 12 presses against the second cam. T. arr. All PS 4s are loaded. 1. 3. p. files, 9 ill. / J о (Л со о о о ОО pr 12 Phage 1

Description

The invention relates to the field of mechanical engineering and is intended for use in factory automatic lines specialized in the machining of workpieces installed in devices-satellites.

The aim of the invention is to improve the reliability of the device.

FIG. 1 shows a device with a longitudinal section; in fig. 2 is a view A of FIG. one; in fig. 3 is a view B in FIG. one; in fig. 4 shows a section B-B in FIG. 2; in fig. 5 is a section of YYD in FIG. four; in fig. b - section dd in fig. I; in fig. 7 — node I in FIG. 2; in fig. 8 is a view E of FIG. 7; in fig. 9 shows a section of an Ж-Ж in FIG. 7

The device consists of a frame 1 (Figs. 1 and 2) which is a welded metal structure consisting of two longitudinal beams that are connected to each other by transverse beams. The frame for the four lugs 2 is attached to the positioning table (not shown). Guides 3 are mounted on the frame for moving satellites 4 along them (Fig. 3). The guides 3 in the left part are provided with shells 5. The guides 6 are designed for the carriage 7 mounted in them with the possibility of reciprocating movement and fixed on the inner side of the frame 1, the stops 8 and 9 of the extreme positions of the carriage 7 are also installed there lowering and raising the pusher - rolling pin 10, which is installed with the possibility of vertical movement. The guides 3 for tool 4 are located above the carriage 7.

On the carriage 7 fixedly rhombic pin 11 for fixing the satellite-device 4 and the spring-loaded dog 12. The body of the power cylinder - hydraulic cylinder 13 is fixed on the frame, and the rod - on the carriage. The rotary drive shaft 14 (Fig. 4 and 5) is installed parallel to the guide 6 of the carriage 7, provided with cams 15 and mounted on frame 1 with two brackets 16 and 17. Cams 15 are placed on shaft 14 with offset along it The offset and offset relative to each other along the diameter of the shaft 14.

The dog 12 is installed with the possibility of alternate interaction with the cams 15 of the shaft. The hydraulic cylinder 18 is connected to the shaft 14 through the two-link 19, the cut-off mechanism of the loaded satellite-fixtures 4 (Fig. 6) consists of a lever 20 with a roller 21 fixed with hinge on the frame 1. The lever is fixed on the frame with the axle 22. The switch 23 with the cable is mounted on the bracket frame, the spring 24 locks the lever 20 in the upper position on the stop 25. The switch 23 is installed with the possibility of interaction with the lever 20 of the cut-off mechanism. loaded devices 4. The drive to the pin 10 (Fig. 7-9) consists of a lever 26 fixed on the same axis with a two-arm lever 27, which is equipped with a roller 28 and a spring 29. The roller 28 is kinematically

associated with pin 10 and is interoperable with the stops 8 and 9 of the extreme positions of the carriage 7. In addition, the device contains the grips 30 of the manipulator loading devices 4 at the time of the filing of the next satellite-devices

(Fig. 1, the dotted line). FIG. 3 letters I, K, L, M designate openings whose walls are the stubborn surfaces of the satellites and for which the satellite is based on the manipulator and loading device, the letter P

marked one of the nests under the workpiece. The device works as follows. In the initial position, the carriage 7 is pressed against the right abutments 8 by the force of the hydraulic cylinder 13, in which a small pressure is maintained in the rod cavity; the movable pin 10 is extended to its highest position and held in it by the force of the spring 29; rotary cams 15 are deployed in such a way that the rightmost cam is in the vertical plane (in the working position). Device operation

5 begins with the first device 4 being loaded onto it, in addition, the device is designed to work in conjunction with the manipulators, which load both the devices (conditionally, manipulator 1) and the blanks (manipulator 2). The fixture 4 is based on the manipulator 1 by two holes I and K, into which the pins are installed, when lowering on the guides 3 of the frame 1 the fixture 4 is put on both carriage shafts by the holes L and M, and is removed from the fingers of the manipulator with the grips, they go lower in the slot P, and then generally from the carriage area, not hindering its movement.

So the fixture remains on the frame guides mounted on the shafts

0 carriages. At the end of the lowering, the bottom surface of the device comes into contact with the lever 20 and turns it around the axis 22, overcoming the resistance of the spring 24. With a plate that is installed in the middle part, the lever interacts with the switch 23 and as a result, the device is installed . Then the manipulator 2 loads the first billet into the nest P, while the gripper of the manipulator moves from top to bottom, leaves the billet, and then again up and away from the other billet. Having received the first billet, the device performs a step, for this, pressure is supplied to the hydraulic cylinder 13 and the carriage 7 is moved forward by the extension of the rod

5 until it stops with the pawl 12 into the cam 15. In this position, the carriage stops and loads the second workpiece with the manipulator 2. For the loading time in the rod and

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The piston cavity of the hydraulic cylinder 13 maintains a small pressure, at the same time, due to the area difference, an effort is made to hold its carriage pressed to the cam 15. Then the hydraulic cylinder 18 turns the shaft 14 so that the first stop is retracted away from the pawl 12, and the next stop The second one (second from the right) is set to the working position. Next, the second step is performed, while the rod of the hydraulic cylinder 13 is advanced and the carriage is pushed with a pawl 12 to the second cam 15. Thus, the entire device is loaded with blanks, the number of which is determined depending on the size of the parts by the size of the automatic production line. etc. The rotary shaft in the process of loading blanks in the device makes turns in one direction or another, the cam retraction holding the carriage, and the same movement is set to Static preparation position sleduyushy pawl disposed at a distance of one step ahead of the shaft 14.

With the device fully loaded, the last cam is retracted to the side, and the carriage makes the last step forward until it stops at the fixed stops 8 (left pair of stops). At the end of the carriage stroke, the roller 28 runs onto the support 9 and turns the double-shouldered lever 27, compressing the spring 29. As soon as the lever passes through the “dead position, spring 29, unclenched, will complete the lever rotation. The turn of the two shoulders arm occurs simultaneously with the turn of the lever 26 associated with the pin, which is then pulled down. The fixture 4 completes the step together with the carriage under the action of only one pin 1 1. At the end of the forward movement, the fixture releases the lever 20, which is turned upwards by the action of the spring 24, the lever plate loses contact with the switch, and the control signal is generated in the control system. In addition, the lever abuts against the edge of the loaded device, preventing it from moving backwards and protecting the area to load the next empty device. After that, the carriage reverses, and the loaded device remains on the guides 3, bounded by the covers 5 from above, and it moves further under the action of the next device, which pushes it further down to the automated line conveyor. When the carriage returns to its original position, the pawl 12, the raid on the cams 15, turns around and does not hinder movement, and it is set to the working position by a spring. Hydrocylene rod: fa 13 retracts into the body, and roller 28 at the end of the stroke runs over the second stop 9 and its turn through the levers

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and the spring sets pin 10 to its original upper position.

Thus, due to the particular design, the proposed device provides a reduction in idle strokes compared to the known. Any shifting of the rod of the hydraulic cylinder 13 is used either to move the tool or to return the carriage to its original position. Moreover, the carriage return is carried out in one stroke of the hydraulic cylinder, this saves time, facilitates the operation of the hydraulic drive (less switching), and increases the service life of the device. The hydraulic cylinder 18 rotates the shaft and has no idle strokes at all. This is achieved by rotating the shaft at an angle equal to the angle between adjacent cams in a single stroke, reversing the next pair of cams in reverse, while the cam 12 is retracted upwards when the carriage returns to its original position.

The reliability of the device lies in the continuity of the kinematic connections, ensuring their operation, and this, combined with normal operating conditions, the frequency of maintenance and inspection, ensures the non-stop operation of the device as part of the automatic line. The continuity of the kinematic connections is ensured by the design throughout the entire cycle, starting with loading the device, when the pins of the manipulator 1 release the device only after it has been installed on the pins of the carriage. Further, when loading the workpiece, the gripper releases it only when it enters the “jack of the nest P” and falls into place. During the loading of the first billet, the carriage is pressed against the fixed stops on the frame, and during the following loads the hydraulic cylinder presses the carriage in turn to the pivoting cams, thus achieving immobility and accuracy of the position of the carriage and the tool during loading. One of the pins connecting the device to the carriage has two positions in which the spring holds it. At the time when it takes the retracted position and loses its connection with the device (it is attached to the moving carriage), this connection holds the second pin, which, interacting with the half-hole at the rear end of the device, brings it to the final position. The cut-off device kinematically ensures the separation of the carriage with a loaded device when it returns to its original position, and it also provides for the next empty device free space on the rails 3. The hydraulic cylinders 13 and 18 during forward and reverse kinematic connections with the carriage and the shaft are not lost.

For automatic lines where machining is carried out

workpieces or assembly of units, their precise orientation is a prerequisite for successful work. When using a satellite device, in which the sockets P are precisely located relative to the basic holes I, K, L, M, for which the fixture is fixed both on the device and on the line machines, it is necessary to ensure that the workpiece enters the socket where it is based contour cast). In order to fulfill this condition, given that the manipulator 2 places the workpieces in the same place, the device must precisely position and move the tool. The holes in it have chamfers that help to get on two 10 and 1 1 carriages, with the pins connected to each other with the exact size and one of them is rhombic. The carriage itself is pressed by the hydraulic cylinder 13 to the stops, which are adjusted during assembly, ensuring the exact position of the pins relative to the manipulators. In addition, the carriage is oriented in the direction of their rollers with minimal gaps. In order to load the second, third, etc. blanks, the distance between the sockets in the tool 4 must exactly match the steps of the carriage. This is achieved due to the accuracy of the positioning of the rotary cams and the making of the sockets (and the whole fixture) by stamping or precision casting, which at the same time guarantees the uniformity of all devices 4 used in the automatic line.

Simplification of the design of the cut-off mechanism of loaded devices 4 lies in its multifunctionality, i.e. in addition to its intended purpose, which consists in keeping the loaded device 4 from returning, it also participates in controlling the operation of the entire position table, since it is equipped with a switch 23, which participates in the formation of the control system signals "Device loaded or device removed.

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Claims (2)

Invention Formula . A device for stepping satellites containing a frame with guides, mounted in the latter with the possibility of reciprocating movement of a carriage with a pusher for interacting with stubborn surfaces located on the satellites, located above the carriage for satellite, and a ram for moving the carriage different to that that, in order to increase the reliability of the device, it is provided with an extreme position of the carriage located on the frame, mounted parallel to the guide card Drives with a drive shaft with cams placed on it with a displacement along it at a distance of the shaft of movement and diameter of the shaft, fixed on the carriage with a fixed pin for fixing the satellite, installed with the ability to interact with the shaft cams with a spring-loaded dog, and the cut-off mechanism of the loaded satellites with a shaft a lever mounted on the frame, the pusher being designed as a pin mounted with the possibility of vertical movement, the roller being kinematically connected with the pin and positioned with Interaction of a upora.mi extreme positions of the carriage. 0 five 0 2. A device according to claim 1, characterized in that the frame is provided with a switch m mounted with the possibility of interaction with the lever of the mechanism for cutting off loaded devices. Type A FIG. 2  l Fig.Z In In gd sixteen FIG. five one" FIG. 6 IE Par.7 Fi.in MF Compiled by L, Rastorgueva Editor L. GratilloTechred I. VeresKorrektor L Patay Order 1343/17 Circulation 778 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Project, 4