SU605196A1 - Wheel trueing and testing apparatus - Google Patents

Description

one

The invention for dressing and controlling wheels is in the field of instrumentation and can be used, for example, to automate technological processes in the gas industry.

The planar beating of wheels used in watchmaking is edited by clamping the wheel axis in the centers and bending the wheel rim with tweezers at the places of the greatest beating 1. For mass production of wheels, manual editing requires considerable labor costs and does not provide the required accuracy.

The closest to the described device is a wheel alignment and control device, which contains a drive mechanism, a percussion mechanism, a flat beat measurement unit with an amplifier connected to the inputs of the adjusting accuracy blocks, the impact meter, the beat detection connected to the percussion mechanism through the data accumulation unit and unit of weight containers, the input of which is connected to the output of the unit of the moment of impact, the input connected to the output of the starting unit, the other output of which is connected to the input of the data storage unit 2.

However, such a device does not control the radial beats of the wheel.

The aim of the invention is to expand the functionality of the device.

For this, the device is equipped with control units and a radial beat measurement, a synchronization and etching unit, an indication unit and an additional mechanism,

moreover, between the output of the setting unit for editing accuracy and the input of the starting unit, a synchronization and control unit is included, the other input of which is connected via the coitrol unit of the radial beat to the output of the measuring unit, and the other outputs to the actuator and the display unit.

The drawing shows a diagram of the proposed device. Tribe 1 with wheel 2 installed in centers 3

and 4, the leash 5 is rigidly connected to the pulley 6, which receives the drive through the belt drive 7 from the pulley 8 connected to the engine 9. The probe 10, touching the rim of the wheel 2, transmits oscillations of the moving part of the measuring

devices 11.

Hammer 12 is rigidly connected to the movable part of the percussion mechanism 13, the inlet of which is connected to the output of the block 14 of the weight containers. This unit can be performed, for example, with thyristor amplifiers. One input of block 14 is connected to the output of block 15 of data accumulation, which is a counter with keys, and the other is connected to output

an impact moment determination unit 16 comprised of limiting amplifiers and a back donation imimuls separation circuit.

One input of the block 16 is connected to the output of the starter 17, which is a static trigger and key, and the other input is connected to the output of the amplifier 18. The output of the amplifier 18 is also connected to the inputs of the beat-detection unit 19, made in the form of a differential amplifier with a storage capacity and a correction accuracy setting unit 20, which is a threshold element. The output of block 20 is connected to one of the inputs of block 21 of synchronization and control, which contains static triggers, a one-shot with a specified exposure time, output amplifiers and logic circuitry. One output of the block 21 is connected to the actuator 22 in the form of an electromagnet, the measles of which, through a spring, presses the probe 23 to the wheel, which transmits the radial beating of the movable part of the measuring unit 24, and the other to the display unit 25, which represents signaling lamps with transport elements. The output of the block 24 is connected to the block 26 of the control of the radial beat, made in the form of a threshold element.

The device works as follows.

Tribe 1 with wheel 2 is continuously transmitted rotation from engine 9 through gear 7 mounted on pulleys 6 and 8. In the presence of a plane beat of wheel 2, probe 10 performs a sinusoidal movement and allows measuring device 11 to generate a signal proportional to the amount of beating. This signal is amplified by the amplifier 18 and is fed to a unit for setting the accuracy of the correction, a block 16 for determining the moment of impact and a block 19 for determining the beating of the plane. If the amplitude of the beat is greater than the allowable, block 20 gives a signal and block 21 of the synchronization and control sets the trigger "Edit permission to the position" 1. This command enters the trigger 17. The one-shot vibrator in block 21 is in a steady state and keeps actuator 22 in a de-energized state, with the result that the probe 23 does not touch the wheel.

The beating motion detecting unit 19 emits pulses after each strike with a hammer 12 if the amplitude of the beatings during the period of the wheel rotation does not decrease by a predetermined amount of voltage change on the capacitor per revolution of the wheel. In this case, the pulses are summed in the counter of block 15 with a certain initial number, which ultimately increases the impact force. If the amplitude of the beats is reduced and less than the voltage on the capacitor, then the plane beating unit 19 does not emit pulses.

Pressing the Start button with the command Allow edits from block 21 triggers the data accumulation unit 15 and the impact moment determination unit 16 to work. Since the point of impact of the hammer 12 is located at an angle of 90 ° relative to the point of contact of the probe 10, and if there is a pulse, the signal at the input of the block 16 for determining the moment of impact is sinusoidal, then the moment when the signal voltage passes through zero will electrically correspond to the moment of finding the point of maximum pulse the place of action of the hammer 12. The time of flight of the hammer to the plane can be taken into account by the introduction of additional corrective elements. On the falling edge of the amplified and limited signal of block 16, a command is formed to turn on the discharge thyristors of a block of 14 weights, the purpose of which is to output various largest electric energies to the percussion mechanism 13 in accordance with the command from the data accumulation unit 15.

Block 15 accumulates a number in binary code until the amplitude of the beats is

decrease by a predetermined amount. As soon as the amplitude of the beats enters the tolerance, the unit for setting the accuracy of the edits issues a signal to the block 21, which sets the trigger to the “Resolution of the edit,” position “O,”

corresponds to the command "Prohibition of edits to the trigger 17, which will reset the data accumulation unit 15 to the initial state and turn on the shock moment determination unit 16. At the same time, in block 21, a one-shot is started with a dwell time equal to one to two wheel revolutions, which through an amplifier turns on an actuator 22. The probe 23 is pressed against the wheel. If there is a radial runout, it is transmitted to the movable part of the measuring unit 24. From the output of the block 24, the beating signal enters the block 26 of the control of the radial beating. If the runout is larger than the tolerance, the signal will pass to block 21 and will be remembered by the trigger, if lower, the state of the trigger will not change. On the falling edge of the one-shot pulse by the logic circuit, the information amplifiers are transmitted through the information amplifiers to the display unit 25, which signals the presence of a radial beat.

Upon the arrival of a signal from the accuracy setting unit 20, the trigger for storing the radial beat of the unit 21 is reset.

Claims (2)

1.Tarasov. Watchmaking technologists. M., 1970, p. 152-153. 2. USSR author's certificate №534734, cl. G 04 D 7/04, 1975.