SU955304A1 - Machine-tool for automatic electric machine commutator slotting - Google Patents

Description

(54) MACHINE FOR AUTOMATIC TRAINING OF THE COLLECTORS OF ELECTRIC MACHINES

one

The invention relates to process equipment for manufacturing manifolds of electrical machines and can be used in the electrical industry.

A known automatic defrosting machine, collectors of electric machines, comprising a housing, a collector rotation drive, a caliper mounted in guide elements, a milling cutter mounted on the caliper so as to rotate around an axis passing through the axis of the collector, and a control system 1.

The disadvantages of the known machine are the complexity of the design, as the machine is equipped with a special drive for turning the cutter around an axis passing through the collector axis, and the insufficient quality of the manufactured products, as when turning the cutter through a strictly defined angle, the accuracy of the step between the collector plates along the length of the collector.

The purpose of the invention is to simplify the design and improve the quality of the processed products by increasing the accuracy

performing a step between collector plates.

The aim is achieved by the fact that the machine contains a rotating double-arm lever mounted on a caliper with a fixed position, equipped with a drive, cutter angle sensors, which is in the caliper for the lock), and the cutter is mounted on the lever. FIG. Figure 1 shows the kinematic scheme, Q m of the automatic machine for freezing the collectors of electric machines; in fig. 2 - machine caliper, top view; in fig. 3 is a block diagram of the machine control system; in fig. 4-diagrams of the workpiece rotation angle sensor; in fig. 5 15 movement diagram of the machine caliper.

The machine for automatic | -o-frosting of the collectors of electric machines comprises a housing 1 on which a pneumatic cylinder 2 is mounted, connected via a pull 3

2Q and a hollow shaft 4 with a clamping chuck 5, which serves to secure the core b of the electric machine with the treated manifold and the pneumatic cylinder 7 with a movable center 8, serving to install and support a coring-1. In order to provide step-by-step rotation of the co-collector, an electric drive 9 is used. It includes a stepper motor 10. a backlash-free rotator II, amplify .- 12 power, a reversing distributor - and a power source G4. A milling cutter 17 is fixed on the rotary double-arm lever 15 on the axis 16. The two cutter drive motor 18 is connected to the double-arm lever, connected to it through a V-belt transmission 19, and the sensitive element of the sensor of the angle of rotation 20 of the cutter 20 is fixed at the end of the double-arm lever. The double-arm lever 15 is connected to the caliper 21 through an axle 22 rigidly fixed thereto, which provides for the angular rotation of the two-arm lever relative to the axis of the collector. On the two shoulders of the lever 15, there is a lock 23 of its position, which provides a backlash-free connection of the sunport to the two shoulders. A rotation angle sensor 20, an axis 22, and a clamp 23 are mounted in planes that coincide with the axis of the collector. The support 21 is installed in the guiding elements 24 for reciprocating movement, which is provided by the electric motor 25 through a V-belt transmission 26, a reducer 27, an adjustable coupling 28, a crank mechanism 29, and a connecting rod 30. The collector angle control system 31 includes a collector angle sensor 31, installed in the plane of the cutter and the collector axis, the master oscillator 32 with a divider 33 frequency, two elements AND 34 and 35, element OR 36, threshold element 37 and 38, differential type sensor 20, sensor 39 con control slide carriage, program counter 40, number of collector plates control device 41, intermediate amplifier unit 42, block 43 of actuating solenoid actuators of lock 23, clutch 28, pneumatic cylinders 2 and 7. actuators of electric motors 18 and 25. Control device 41 contains inputs 44-50 and exits 51-62. The machine for automatic freezing of the collectors of electric machines operates as follows. In the initial state, the collector angle sensor 31 is blocked by a signal from the output 55 of the control device 41, and the signal from its output 62 is program counter 40 reset to zero, a two-arm lever 15 and a support 21 are rigidly connected to each other by a latch 23. On arrival To the input 44 of the control device 41 of the signal "Start according to the signals from its output, the electric motor 25 is turned on, and the machine-mounted measles 6 is pushed by the center 8 of the pneumatic cylinder 7c into the clamping cartridge 5, where it is clamped by means of the pneumatic cylinder 2. After clamping the core 6, channeling separating apparatus 4 removes the blocking signal from the output 55, hic. and works the sensor 31 of the angle of rotation; K ;;, 1.k KTjpa. generates a signal at the output. l (via the element E 35 and e, 1ms1p H.ii-i ЗН 1k; it switches on the master oscillator to the niaroBoro drive of the electric drive 9. and by the signal n; j output 53 causes one (jpoHK (4 rotation of the electric motor. And)) the gearbox 11 begins to c) an; a11 measles 6. Sensor 31 records the moment of passage of the interlame insulation in the plane of the cutter;) the signal into the program meter 40 and to input 46 of the control device 41. the latter closes its output 5i, while the electric motor 10 stops and gives signals to outputs 55 and 56. The first signal is blocked t sensor 31, the second includes an electromagnetic clutch 28, which provides movement on a segment L (Fig. 5) to a support 21, a two-arm lever 15 and a milling cutter 17. The cutter begins to crash into interlaminar insulation of the collector box 6. At this moment the support 21 comes off sensor 39, which outputs the signal to the input 47 of the control device 41. According to this signal, the control device 41 enters a new state, issuing a signal at the output 57 and turning on the drive of the electromagnet of the latch 23. Last, the output from the caliper jack 21 releases the two shoulders lever 15, cat This gives you the possibility of a small angular movement around the axis 22. As a result, the milling cutter 17, after plunging, moves along the curved trajectory of interlaminar insulation bounded by collector plates, turns around the axis 22 two shoulders lever 15, which acts on the sensor 20. Sensor 20 depending on the direction displacement generates a signal (FIG. 4a) proportional to the displacement. The threshold elements 37 and 38 convert this signal into a relay (Fig. 46) with a dead zone equal to 0.2-0.5 mm of the linear movement of the mill at the turning radius around axis 22. The signals of the threshold elements are fed to the inputs 48 and 49 of the control device 41. These signals at its output 52 receive a signal that opens the element I 34, and to the input of the stepper electric drive 9 receives pulses of a lower frequency from the divider 33 connected to the output of the master oscillator 32. Simultaneously at the output 53 or 54 of the control device 4 duplicated signal Aly threshold elements 37 or 38. Depending on which of the outputs there are control signals, the electric motor 10 will rotate in that direction, turning the pin 6 so that the milling cutter 17 enters the dead zone due to the threshold elements 37 and 38. After the end of the interlaminate isolation cutting, the caliper 21 returns to its original position and at time T (Fig. 5)

with its end, it acts on the sensor 39, the secondary signal of which puts the control device 41 in a state in which the electromagnet of the latch 23 is turned off. At the same time, the support 21 and the two shoulders lever 15 are rigidly interconnected. At the outputs 51 and 55 of the control device 41, the signals for turning off the electric motor 10 and the sensor 31 appear. For the next interlaminate isolation, the cycle is repeated.

After processing the entire collector, program counter 40 generates a signal "End, coming to the input 50 of the control device 41, over which the latter switches to the initial state, unclamping the pin 6.

Claims (1)

1. USSR author's certificate No. 708446, cl. H 01 R 43/06, 1977. 3 / L - / O - | | 75 - P FIG.