SU1574426A1 - Press for mounting and dismantling assemblies - Google Patents

Abstract

The invention relates to machine-assembly production, to devices for mounting and dismounting press joints. The purpose of the invention is the expansion of technological capabilities and increased automation by ensuring that the device performs various operations and processing products of different sizes, as well as by combining all operations into a single cycle defined by the control system. The revolving heads 5 and 6 are guided to the disassembled assembly 8. First, operations for disassembling the threaded connections are carried out using wrenches and grippers. Next, turn the heads into operation of the clamping stops 29–32, which clamp the shafts of the unit 8, after which the heads move together in one direction. Their reverse movement with the help of the tool 11 with the shaft compresses the bearings. The sequence of switching on all the mechanisms is ensured by the control system with the control unit and the limit switches. 2 hp f-ly, 11 ill.

Description

one

(21) 4381902/27-27 (22) 02.25.88 (46) 30.06.90. Bul No. 24 (75) M.M. Mezentsev (53) 658.515 (088.8)

(56) USSR Copyright Certificate №430985, cl. In 23 R 19/02, 1972.

(54) PRESS FOR INSTALLATION AND DISASSEMBLY OF KNOTS

(57) The invention relates to mechanical assembly production, to devices for mounting and dismounting press joints. The purpose of the invention is the expansion of technological capabilities and increased automation by ensuring the device performs various operations and processing products of various sizes, and

also by combining all operations into a single cycle defined by the control system. The revolving heads 5 and 6 are guided to the disassembled assembly 8. First, operations for disassembling the threaded connections are carried out using wrenches and grippers. Next, turn the heads into operation of the clamping stops 29–32, which clamp the shafts of the unit 8, after which the heads move together in one direction. Their reverse movement with the help of the tool 11 with the shaft compresses the bearings. The switching sequence of all the mechanisms is ensured by the control system with the control unit and limit switches. 2 hp f-ly, 11 ill.

WITH

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FIG. one

The invention relates to a mechanical assembly production, namely, devices for mounting and dismounting press joints, in particular automobile gearboxes.

The aim of the invention is the expansion of technological capabilities and increased automation by supplying the device with turret heads and additional tools attached to them, making the drive of these heads providing them both mutual relative and joint movement, the electrical connection of this drive with the drives of other mechanisms of the device, as well as installation of all bases and processing units with the possibility of adjusting movements.

Fig, 1 shows the proposed press, top view; in fig. 2 — node I in FIG. one; FIG. 3 is a section A-A in FIG. 2; 4 shows a press (initial position), a general view; in fig. 5 - the same, at the moment of contact with the stops of the ends of the machined shaft; in fig. 6 is the same in the position for dismounting the male parts from the shafts; in fig. 7 is a section BB in FIG. 6; Fig. 8 is a hydraulic layout of the stand; in fig. 9 - safety valve, cut; in fig. 10 is an electrical circuit; in fig. 11 is a diagram of the installation of limit switches.

The press consists of a base 1 with guides 2, parallel to the machining axis, and racks 3 and 4 mounted on them with the possibility of movement. The racks 5 and 6 of triangular shape are mounted for rotation on the racks. Between the racks on the base is placed a device 7 for installing body parts or assemblies 8, made in the form of cradle 9 and 10, installed with the possibility of mutual relative movement and fixation. Between the device 7 and the pillar 3 on the base 1 is fixed a device 11 for dismantling the female parts.

The drive for moving the struts is made in the form of a power cylinder 12, which is fixed on the base and pivotally connected with the rod with the stand 3, as well as the gear racks 13 and 14 which are rigidly connected with the struts. Both gear racks engage with the gear 15. axis 16 is freely rotatable. On base 1, guide grooves 17 are made parallel to the machining axis, in which axis 16 is placed with the possibility of movement. Slots are mounted on it, on which a coupling clutch 18 is installed. The latter can engage with coupling half 19 fixed on gear 15 and c half coupling fixed on the base. The clutch is moved along the splines of the axis 16 by an electromagnetic actuator 21.

The revolver heads 5 and 6 contain tools that are replaceable pneumatic multi-spindle wrenches 22 for loosening the mounting bolts of the shaft bearing caps.

0 gearbox, gearbox pickup 23 of gearbox 24, nut drivers 25 and 26 for loosening the nut. Securing the flange of the output shaft 27 and the nut for the rear bearing of the intermediate shaft 28, as well as the supporting stops 29 - 32 for pressing out the gear shafts 27 and 28. In this case, the puller 23 is driven by the pneumatic cylinder 33, and the sliding stops 29 and 30, the wrench 25 and the puller 23 are mounted with the possibility of vertical movement. The stops 31 and 32 for removing the intermediate shaft 28 are rigidly fixed in the turrets, and the stops 29 and 30 for the pressing out of the secondary shaft 27 are spring-loaded in the direction to the gearbox and equipped with electromagnetic locks 34. The turret heads 5 and 6 are rotated by the turning mechanisms 35.

A tool 11 for dismounting chucks, such as bearings from the shafts of a gearbox, contains a clamping element 36 mounted on the base with the possibility of adjusting movement in a direction parallel to the machining axis. On this element, the support strap 37 is pivotally mounted with the possibility of rotation, with outwardly expanding grooves 38 for covering the shafts. Rotation of the strip is carried out using a drive (not shown).

The hydraulic system and control system contains a pump 39, electro-hydraulic three-position distribution valve 40, connecting pipelines

5 41, a safety valve 42, included in the pressure line, and a check valve 43. The spool 40 is turned on by a commander (not shown), which receives signals from traveling switches 44 - 46 for moving racks 3 and 4 and from switches 47 of latches 34 The safety plunger valve 42 is provided with a rod 49 fixed to the plunger 48 with a permanent magnet 50 and magnetically controlled contacts 51 placed in the valve body 42. 5B electrical circuit the closure contact 51 of the circuit breaker coil 52 is connected omagnitnyh fasteners 34, actuator coil 53 of the electromagnet 21

turning on the clutch 18, powered by the switches 47, the path switches 44 -46 and the coil 54 of the electromagnet with the switching contact 55.

The press is equipped with a command unit with a cyclic program controlling the movement of its components and the commissioning of the corresponding tools.

The press works as follows.

On the gearbox to be removed, with the gears previously engaged, such as the 3rd gear, a partial subassembly is carried out and installed in the cradle 9 and 10 of the fixture 7.

When the power cylinder 12 is turned on, the column 3 is moved in the direction of the gearbox, and through the kinematic connection of the rail 14, gear 15 and the rail 13, the column 4 also moves to the disassembled unit. In this position, the coupling clutch 18 is in engagement with the half coupling 20 of the base 1, while the axis 16 is stationary relative to the latter, the gear 15 rotates freely on the axis 16, and the rails 13 and 14 roll around the gear 15. At the same time the track switch 44 reaches it sends signals to the commander, which stops extending the rod of the hydraulic cylinder 12, and turns on multi-spindle wrenches 22. At the end of the operation, the commander gives a signal to retract the turrets 5 and 6 from the unit to be disassembled. In the extreme position of the turrets 5 and 6, the turning mechanisms 35 rotate them and, thus, change the tool. The command device repeats the cycle with the technological operations of pressing out the input shaft 24 and unscrewing the nuts of the shafts 27 and 28, while locking the secondary 27 and intermediate 28 shafts from turning is carried out by a puller 23, which, covering the primary shaft 24 beyond the spline part, stops it from turning, and through gears of permanent engagement and engaged gear, stops the intermediate 28 and secondary 27 shafts respectively.

To perform the pressing operations, the hydraulic cylinder 12 brings the turrets 5 and 6 to the gearbox, the sliding stops 29 and 30 abut against the ends of the output shaft 27 and compress the springs, and the fixed stops 31 and 32 simultaneously contact the ends of the intermediate shaft 28, which prepares further movement of the pillars 3 and 4 is conducive. As a result, in the over-piston cavity of the hydraulic cylinder 12, the pressure increases dramatically and

The safety valve 42 of the hydraulic system is activated. When the plunger 48 of the valve 42 is moved, the contact 51 closes, which includes the coils 52 and 53 of the electromagnet of the actuator 21 for engaging the clutch and the electromagnetic clips 34. At the same time, the stops 29 and 30 rigidly fix the secondary shaft 27, and the coupling 18 disconnects the axis 16 The base 1 and fixedly connects the gear 15 with the axis 16. In this position, the rails 13 and 14 with the gear 15 become mutually fixed and move together as one.

When the lugs 29 and 30 are locked with locks 34, the switches 47 give a signal to the control unit, which issues a command to move the rack 3 and the rack 4 rigidly connected to it, while the axis 16 moves in the slots 17 of base 1. Thus, the secondary 27 and intermediate 28 shafts clamped in the stops 29 - 32 turrets 5 and 6 are pressed in with the bearings from the gearbox housing. Upon reaching the stance

The 2-way switch 45 gives the signals to stop the movement and turn on the drive of the device 11 for dismounting the bearings from the shafts 27 and 28. Turning the bar 37, the grooves 38 cover the shafts 27 and 28, after which the movement of the pillars is reversed, while the grippers hold the bearings from moving and they are pressed from the rolls. When a switch 3 reaches, the command device sends the signals for opening contact 55 and for withdrawing the stand 3 from the disassembled unit, with the locks 34 unlocking the stops 29 and 30, and the coupling half-lead (coupling 18) engages with the coupling half 20 of the base 1.Speed 15 rotates freely on axis 16, and racks

3 and 4 are diluted with rails 13 and 14, the pressed bearings are removed from the shafts, then all the dismantled units are removed.

Claims (3)

Claim 1. A press for mounting and dismounting units comprising a base with guides parallel to the assembly axis, a stand mounted for movement in the guides from an actuator including a ram, an additional stand mounted opposite the main one, tools in the form of base stops, one part of which is rigidly fixed, and the second part is installed with the possibility of axial movement and fixation, a device for mounting body parts, as well as a control system including a safety valve, differing and with that. that, in order to expand technological capabilities and increase automation, it is equipped with a dismantling device for covering parts, mounted on the base between the uprights, turret heads mounted on the uprights with the possibility of rotation, and additional tools mounted on these heads, based stops installed with the possibility of axial movement, spring-loaded, and their latches are made in the form of electromagnets, the device for mounting the body parts is made in the form of on the base between the posts of the beds, the base is made with guide grooves parallel to the axis of the assembly, the movement drive is made in the form of gear racks connected to the posts, an axis with slots placed with the possibility of movement in the guide grooves, gear mounted with the possibility of free rotation on the axis and interaction with the teeth of the rails, two gear coupling halves, one of which is fixed on the gear end and the second on the base of the coupling coupling mounted on the axle splines with the possibility of axial movement / /four with:; ///// // fY / //////// ////// .... j, R , } Ј //////// ///////// A / x / /// 7/4 ha if / r ////////// f sixteen and interacting with the said coupling halves, as well as the electromagnetic drive for moving the clutch, the control system is made with a pressure sensor mounted on the safety valve and electrically connected with the electromagnets of the drive for the clutch and locking lugs, and the additional stand is mounted so that it can move in the guide bases . 2. The press according to claim 1, characterized in that the device for dismantling the covering parts is made in the form of a clamping element mounted on the base with the possibility of adjusting movement in a direction parallel to the axis of the assembly, and an anvil with grooves hinged on said element with turning possibility. 3.Press according to claim 1, characterized in that the cradles of the device for mounting the body parts are mounted with the possibility of mutual relative movement and fixation, and the tools are mounted on racks with the possibility of adjustment movement in a plane perpendicular to the machining axis. IT18 / h / if / r ////////// f FIG. 2 from cm "sr h-y-y i -E-H AND " "ABOUT "V 51 in 38 38 / K Hlll FIG. 7 12 47 W Zjw X 4-2 / F W J FIG. AT FIG. 9 51 34 44 I Bearing disassembly Vypressodka dalod I CC- g “FIG. 46 / LC Rack rack Tap