SU574702A1 - Numeric program control apparatus - Google Patents

Description

one

The invention relates to devices for automatically controlling machine tools.

A known contour of a program control system comprising a serially connected input device of a main program, a subroutine unit, a decoding unit and a drive control unit 1.

The device for numerical program control, which is the one closest to the image, contains a serially connected memory unit, a decoding unit, a control unit and stepper motors of coordinate movements, as well as AND elements by the number of coordinates 2.

However, these devices do not provide control over their operation with the depth of troubleshooting to a single coordinate, i.e., their disadvantage lies in the narrow functionality.

The aim of the invention is to extend the functionality of the device by providing control of its operation with a depth of fault diagnosis to a single coordinate.

For this, the proposed device additionally contains a delay element, displacement sensors in coordinates, triggers in the number of coordinates, the outputs of which are connected to the first inputs of the elements AND, the second inputs of which are connected to the input of the lemmen2

This delay and the information output of the decoding unit; the output of the delay element is connected to the zero setup inputs of the triggers whose counting inputs

connected to the outputs of the displacement sensors in coordinates, connected to schopper motors of coordinate displacements, the individual inputs of the flip-flops are connected to the outputs of the memory block, and the outputs of the elements

And are the control outputs of the device.

The drawing shows a functional diagram of the proposed device for numerical program control.

The device contains a memory block 1, a decoding block 2, a control block 3, step motors 4 coordinate displacements, sensors 5 displacements on coordinates, triggers 6 on the number of coordinates, And 7 elements on

the number of coordinates, the element 8 delay, control outputs 9.

In the initial state, the information on the input and output of the memory unit and the decoding unit is missing. Triggers 6 are in

zero-zero: en11I, there is no signal at the outputs 9. A single input of each trigger 6 is connected to a discharge amount of a buffer memory of a block of 1 memory of the same coordinate with a weighting factor of 2 °.

Claims (2)

The device works as follows. The frame information from the source of information (not shown) through the buffer and working memory of memory block 1 is fed to the input of decoding block 2 and to the single installation inputs of trigger 6, which decodes this information and issues a unitary code to the inputs of control blocks 3 . Each step processed by the stepping motor 4 of the coordinate movement is converted by the sensor 5 into a pulse, which at the counting input controls the trigger 6 of the same coordinate. After processing the frame information from the output of decoding unit 2, the input signal And 7 and the delay element 8 receive a signal, which polls the status of the flip-flops 6 and through element 8 sets them to the zero position. If at the same time one of the flip-flops 6 is in the "single position, then the coordinate of the same name fails. Indeed, the presence of "1 in a bit with a weighting factor of 2 ° of the displacement amount code when the device is in proper operation corresponds to an odd number of units of the unitary code from the output of decoding unit 2, and therefore to an odd tilting trigger 6 of the same name coordinate. The information of this bit of the magnitude of the displacement along the coordinate at the beginning of frame processing is recorded in the trigger 6 of the same coordinate along a single setup input. At the end of the frame, when polling from the decoding unit 2, the triggers 6 should be in the zero position. Thus, failures are detected in the device, leading to an odd distortion of the information on the magnitude of movement along the corresponding coordinate. At the same time, at the end of frame processing from the control output 9 of the corresponding coordinate, the signal "Fault" is issued, which ensures the determination of the faulty channel. When using this invention, the loss of working time during the operation of the system "device for numerical program control - machine by continuous monitoring of the operation of the device with the depth of fault diagnosis to a single coordinate is reduced. An apparatus for numerical program control, comprising a serially connected memory block, a decoding unit, a control unit and stepping motors of coordinate movements, as well as elements AND according to the number of coordinates, characterized in that, in order to expand the functionality of the device, it contains a delay element , displacement sensors in coordinates, triggers in the number of coordinates, the outputs of which are connected to the first inputs of the elements AND, the second inputs of which are connected to the input of the delay element Mu output of the decoding unit, the output of the delay element is connected to the zero setting inputs of the triggers, the counting inputs of which are connected to the outputs of the displacement sensors in the coordinates connected to the stepping motors of the coordinate movements, the single inputs of the triggers are connected to the outputs of the memory block, and These are the control outputs of the device. Sources of information taken into account in the examination I. USSR author's certificate №408276, cl. G 05B 19/18, 1970. 2. USSR author's certificate L 434380, cl. G 05B 19/18, 1971.