SU1701484A1 - Flexible line for machining electric motor frames and the like - Google Patents

Abstract

The invention relates to a machine tool industry, in particular to satellite-type flexible lines for the complete machining of electric motor cores. The purpose of the invention is to increase the machining accuracy by concentrating the machining on one position without reinstalling the workpiece. The line contains aggregate machines and a transport system including satellites. Aggregate machines are equipped with additional boring heads, which are located coaxially with the main boring heads, but from the opposite side. Each satellite 3 has a central opening 27 for passage through its boring holoz, as well as the centering collet 23, which is installed at the loading and unloading position. The collet 23 is provided with a drive for its movement perpendicular to the base plane of the satellite. At the loading position, a blank 6 of an electric motor frame is mounted on the collet by means of a manipulator. After clamping the workpiece, the collet is set in motion by the coupling screws of the coupling halves 47 and 42. The screws with the coupling halves 42 are permanently located on the satellite, and the coupling halves 47 are connected to the actuator 4 at the loading and unloading positions 43. After the blank of the three screws is clamped, the centering collet is compressed and retracted from the satellite area. The coupling halves 42 and 47 are also disengaged by retracting the sliders 44. Then the satellite 3 is moved along the guides 1 and 2 to the machining position. 5 il. (L S h | O Ј 00 Out.t

Description

The invention relates to a machine tool industry, in particular to flexible satellite-type lines for complete machining of beds and stators of electric motors.

The aim of the invention is to improve the machining accuracy due to the concentration of processing operations in one position without re-installing the workpiece.

FIG. 1 shows an automatic line for machining stannm electric motors, a general view; in fig. 2 - satellite fixture with workpiece, top view; in fig. 3 shows section A-A in FIG. 2; in fig. And - the aggregate machine for rough turning of locks, boring a hole for pressing a package of cores, boring free holes in a bed blank; in fig. 5 - press with stator, general view.

The line for machining parts such as the bed of electric motors contains a transport device with guides 1 and 2 for moving satellites 3 and equipment installed in a technological sequence, which includes: an aggregate machine 4 for milling the paws 5 of a blank b in a bed, an aggregate machine 7 for roughing holes 8 in the blank 6 for pressing in the package of cores 9; aggregate machine 10 for rough turning zzmkov 11 and test boring of 8,12 holes and 13 aggregate machine 14 for drilling holes for the threads of the bearing fastening of the new guards; an aggregate machine 15 for processing holes in the paws 5 of the blank b, an aggregate machine 16 for cutting threads for fastening bearing shields; press the press package of cores 9 into the blank b of the bed; an aggregate machine 18 for finishing turning locks 11 and punching holes in a package of cores. The traverse device also contains a robot 19 for transferring (for example, from a rack) blanks of the beds and installing them on the loading position 20 (FIG. 1).

At each position (Fig. 2) of processing and loading, there are three pins 12, each driven by a ram, and two bi-retaining clamps 22 (Fig. 2 and 3). At the loading and unloading position between the guides 1 and 2, a collet 23 is installed, which interacts with two tapers 24 and 25.

The collet 23 passes through the ring 26, which is the guide for the shank of the scissors. The ring 23 simultaneously serves as the base support for the workpiece 6. For the passage of the satellite 3 through the collet, a hole is made in it 27. For raising the emission of the collet serves as a power cylinder 28, the piston 29

which includes an additional power cylinder, the piston 30 of which carries the rod 31 with the collar 32, which is interoperable with the cone

25. A spring 33 is installed between the cones, the position of the cones on the rod is adjusted by a nut 34. On the upper plane of the satellite 3 there are three supports 35, through which the clamps 36 with five 37 dl pass

securing the workpiece b, as well as three supports 38 through which fasteners pass, for example screws 39. To prevent axial movement, grooves 40 are made on screw 39 into which are inserted

rings 41. Screws 39 at one end carry the clips 36, and at the other end the coupling halves 42. At the loading position, the racks 43 are installed with the possibility of reciprocating movement of the sliders 44 s

electric motors 45, on shafts 46 of which there are coupling halves 47. The stops 48 located on the uprights 43 limit the movement of the sliders 44,

For the orientation of the workpiece 6 bed on

paws 5 it serves as a strap 49, mounted on the rod 50 of the power cylinder 51.

The aggregate machine 10 (FIG. 4) consists of a frame 52, to which vertical posts 53 and 54 are fixed at the top and bottom. On the upper rack 53 there is an upper guide 55, along which the upper power table 56 moves, on which the upper force head is located 57, top boring head 58 Torque

from the spindle 59 of the power head 57 is transferred to the spindle 60 of the boring headstock 58 via the coupling 61. Both the spindle 60. starting from the lower end, the boring head 62 for finishing boring 8, the boring head 63 for boring the free hole 12 and the boring head 64 for rough turning are placed

38 MSHW 11.

On the lower vertical rack 54, there is a lower guide 65. ps which moves the lower power table 66, on which the lower power head is located (not shown), the lower boring headstock 67, through which the boring spindle 68 passes, where from the upper end, a boring head 69 for fine boring of a hole 8, a boring head 70 for boring a free hole 13 and a boring head 71 for rough turning are teeth I. The upper end of a boring spindle 68 enters a hole in the process 60 sp.

The body 72 of the satellite 3 is based on the rails 1 and 2, which are supported by the uprights 73 and 74.

The press 17 consists of a bed 75, which is supported by a vertical upright 73. A rail is attached to the bed 75.

76, on which the power table moves

77, where the holder 78 of the funnel 79 is placed, into which the core package 9 is pushed by a robot (not shown). The vertical axes of the funnel 79, the preforms b, the pressing cylinder 80, the supporting cylinder 81 are

on one line. The pressing cylinder 80 is attached to the console 82 of the bed 75. The rod 83 of the pressing cylinder 80 is connected to the turret 84, the package of cores 9 to be pressed is positioned near the funnel 79 on the guide 85.

The funnel 79 with the lower end enters the free opening 12 of the blank 6, which is supported by the plate 86 through the rod 87 of the support cylinder 81. The entrance of the opening 88 of the funnel 80, through which the packages of the cores 9 pass when pressed, has a conical shape for the convenience of the entrance of the packages. The diameter of the opening 88 itself is larger than the outer diameter of the package of cores 9, which allows them to fall freely under the weight of its own weight. At the exit of the hole 88 smoothly passes over the surface h into the hole 89, the diameter of which is equal to the diameter of the hole 7 for pressing the package of cores 9.

The line for the machining of electric motor cages works as follows.

Satellite 3 is fixed to loading position 20, which is fixed by three pins 21 and by bayonet clips 22 is pressed against the base surfaces of guides 1 and 2. At working positions satellite 3 is installed in a similar way.

When air is supplied to the lower cavity of the cylinder 28, the piston 29 moves and there is no collet 23 upwards. Then, the blank 6 of the electric motor frame is mounted into the opening 27 of the satellite 3 and the legs of the blank 6 are placed in the direction of the bar 49 Air supply to the cylinder 51 orients the workpiece relative to the satellite. When air is supplied to the rod part of an additional cylinder embedded in the piston 29, the piston 30 moves downwardly together with the rod 31. At the same time, the nut 34 presses on the cone 24 and as a result, the collet 23 is opened and the workpiece 6 of the collet 23 is oriented relative to

three pins 21, and therefore relative traveler 3.

After the workpiece is oriented with respect to the three pins 21, air is supplied from the cylinder 51, and thereby the slide 49 is retracted. At this time, drives of displacements (not shown) of the sliders are turned on. The slides 44 and the electric motors 45 mounted thereon begin to move towards the coupling halves 42, with which the same coupling halves 47 engage. The drive of the rods 50 is switched off after the sliders 44 reach the stops 48

The electric motors 45 are turned on, and the rotation through the half couplings 47 and 42 is transmitted to the screws 39, which, turning out of the clamps 36, move them together with the fifth 37 to the side of the workpiece 6. As a result, the bed blank 6 is clamped from three sides, what is controlled, for example, by the torque on the screws 39; Next, the electric inserters 45 are turned off, and the drive of the jumps 44 is turned on, which moves to the initial position, releasing the coupling halves 42 and 47. By air supply to the lower cavity of the additional cylinder moves along The rod 20 with the rod 31 in the upper position, while the flange 32 moves the cone 25, and under the action of the spring 33 moves to the upper position and the cone 24. The scissors 23 are compressed. When fed into the rod cavity of the cylinder 28, the collet 23 is lowered and released from billet and satellite.

The blank 6, in the clamped state, dares with the satellite 3 is fed for machining to the aggregate machine 4, to the first working position, where the paws 5 are milled. In the third working position, after the satellite 3, together with the workpiece b, goes to the aggregate machine 10, it will be centered with three pins 1 and pressed to the guides 1 and 2 by two bayonet clamps 22, the lower power table 66 and the power head fixed on it ( Fig. 4 is not shown) and the boring headstock 67 will start moving at first accelerated, but as soon as the boring head 69 reaches hole 8, the power table 66 will switch to the working feed, and the spindle 68 will receive rotation from the lower power head, the boring process will begin mid hole and 8 from the bottom. Some time after the process of boring hole 8 begins, the upper power table 56 will begin to move downward with acceleration and

The power head 57 and the boring headstock 58 fixed on it. But as soon as the boring head 62 reaches hole 8, the power table 5 switches to the working feed, the boring spindle 60 of the headstock 58 will receive rotation from the power head 57 through coupling 61, and the boring process will begin holes 8 from the top side. In this case, the free end of the lower boring spindle 68 will slide into the hole at the free end of the upper boring spindle 60, which forms a single system and allows simultaneous two-sided machining. At the end of processing, the holes 8 of the spindle with the tools return to their original position, and the satellite 3 with the workpiece is transported to subsequent positions where the mechanical processing of the bed blank is carried out according to the technological process.

At the position of pressing in the package of cores (Fig. 5), the work is performed in the following sequence. Upon installation of the satellite in position, its fixation and clamping, the power table 77 begins to move along the guide 76 with the holder 78 and the funnel 79. The movement of the power table 77 will continue until the end of the funnel 79 enters the hole 12. At this time a support cylinder 81 which is pressed against the bottom end of the workpiece 6 through the rod h of the support plate 86. Simultaneously with the operation of the cylinder 81, a robot (not shown) is pushed into the funnel 79 of the package of cores 8, which lie on the guide 76. The package of cores 8 after The vanilla under the weight of its own weight begins to fall, and the workpiece 6 finally centers on the surface h. At this time, cylinder 80 is actuated, which, through rod 83 and associated shoe 84, presses the package of cores 9 into the workpiece 6. Satellite 3 prevents the supporting plate 86 from bending. After pressing, cylinders 80 and 81 are simultaneously actuated a rod 83 and a supporting plate 86. Thereafter, the power table 77 is moved up, retraction of the funnel 79 from the workpiece 6. The satellite 3 is freed from the pins 21 and the clamps 22 and moves to the next position. After complete machining

the blanks 6 of the motor frame already in the form of a stator with a pressed package of cores 9 return to the beginning of the line to the loading position where the stator is released from the satellite.

Claims (1)

Claims of the invention A flexible line for the machining of parts such as a bed of electric motors, comprising technological sequence equipment, including aggregate machines with vertically arranged boring heads, means for transporting satellites along guides transport device between loading and unloading positions and mechanisms for clamping blanks on satellites, characterized in that, in order to improve machining accuracy, aggregate machines equipped with additional boring heads, which are located opposite to the main boring heads, the main and additional boring heads are installed so that each of them can interact with each other through an additional hole made in the spindle of one of them to accommodate the spindle nose in it with a corresponding head, each - the unloading position is provided with a centering collar mounted perpendicularly to the base surface of the satellite, with a return collar driving it moving the ceiling elements for orientation blanks with respect to the means of fixing the satellite and at least three sliders carrying the coupling halves with rotational drives; and on the other, the half coupling, with the possibility of interaction with the aforementioned coupling half of each slide, which responds to it. 53 68 57 59 FIG. four 75 7B 82 Shchi five