CS205735B1 - Connection for the control of the automatic cycle and course of evaluation of instantaneous situation of active multipurpose machine tools centres - Google Patents

Description

The invention relates to an automatic cycle control circuit and continuous evaluation of instantaneous states of active nodes, in particular multi-purpose machine tools, in particular multi-purpose modular machines with automatic multi-spindle operation heads with automatic workpiece change.

• Modular multipurpose machine tools are characterized primarily by their modularity and are characterized by the fact that both the number of working units and the number of other active nodes depend both on the type of workpiece and on the required technology. Consequently, the constructional requirements of these machines are also demanded.

A new, new generation of multi-purpose modular machines is represented by multi-purpose modular machine tools with automatic change of bits.

For. The known connections used in modular and single-purpose machines so far cannot be used to control this progressive machine type, since these connections do not allow the required frequent machine cycle change when changing a workpiece or technology, which is a basic requirement for multi-purpose machine control.

For driving. These machines are not advantageous and often do not use known control system connections which are used to control conventional machines having a fixed number of controlled machines and in terms of multipurpose machines with automatic head changing and automatic workpiece changing. small number of auxiliary functions.

However, none of the above-mentioned connections enables the evaluation of the instantaneous states of all active machine nodes and the associated interruption of the machine cycle when the condition of any active machine node does not correspond to the condition required to maintain the correct technology of the workpiece being machined. Continuing the machine cycle in the event that the instantaneous state of any active node does not correspond to the technological need of the workpiece would result in a reject or machine failure.

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These drawbacks are completely eliminated by the circuit for automatic cycle control and continuous evaluation of the instantaneous states of the active nodes according to the invention, which is based on the fact that the control and control part of the multipurpose machine is connected to data matrix. states of active machine nodes, on the one hand a block of decoders, to whose outputs are connected logic circuit for control of machine working unit together with logic circuit for control of rotary work exchanger and logic circuit for control of operational head exchanger, and block of comparative circuits to - a logic circuit for operating the magazine of the spindle operating heads and a logic circuit for controlling the automatic rotary table together with a logic circuit for controlling the magazine of the spindle operating heads, wherein the logic circuit for working-unit control, connected via a shift register to the control and control part and all other logic circuits, connected to the «instant status states of active nodes» connected to the outputs of which the signaling unit and the interlocking unit are connected a counter and a metering device connected to the logic circuit of the work unit is feedback coupled to the decoder block.

This connection allows a modular solution for the electrical control of the multipurpose machine tool and allows the entire automatic cycle to be controlled according to a predetermined program, comparing the instantaneous state of the processing units and other active nodes of the machine with the state prescribed in the respective row of input data matrix. The result of the comparison is continually evaluated and transmitted to the interlocking unit, which instructs the control and control parts continuously to either continue or interrupt the machine cycle and simultaneously signal the current states of the active nodes of the multipurpose machine tool. This prevents unwanted machine operation and ensures proper machine operation without unnecessary haverll and scrap. An exemplary wiring for controlling an automatic cycle and continuously evaluating the instantaneous states of the active nodes of a multipurpose machine tool with automatic change of spindle operating heads and automatic workpiece change made according to the invention is schematically shown in the attached drawing.

A matrix input data memory is connected to the control and control portion of the multipurpose machine tool, which consists of control and switching elements, such as buttons, switches, contactors, relays and the like, located both in the control panel and in the switchboard. to which is connected, on the one hand, block 13 of evaluation of the instantaneous states of active nodes of the machine, which consists of comparators, product circuits, sum circuits and time units, on the other hand block 3 of decoders and block 6 of comparative circuits. The logic circuit 8 for controlling the working unit and the logic circuit 8 for controlling the rotary workpiece exchanger and the logic circuit 9 for controlling the operating head exchanger are connected to the block 3 of the decoders. A feedback logic circuit 10 for controlling the working magazine of the spindle operating heads and a logical circuit 11 for controlling the automatic rotary table are coupled to the comparator circuit block 4 together with the logical circuit 12 for controlling the preparatory magazine of the operating heads. The outputs of all logic circuits 7 to 12 are connected to block 13 for evaluating the instantaneous states of the active machine nodes. A counter 6 is connected to the other output of the decoder block, which is connected to a metering device 6, which is connected to a logic circuit 7 for controlling the working unit, which is further connected to a blocking unit 15 formed by flip-flops. control and control parts 1, machines. A block 13 for evaluating the current states of the active nodes of the machine is connected to the next input of the machine control part.

By switching on the switching elements of the control and control part 6 of the multi-purpose machine tool, voltage is provided to the first row of the matrix memory 2 of the input data. From the individual columns of the input data matrix 2, electrical signals are fed to both the decoder block 3, the comparator circuit 6 and the instantaneous state evaluation of the active machine nodes 13. From the decoder block, electrical signals such as state, position, and other actions are supplied to the inputs of the logic circuit 7 for working unit control, logic circuit 8 for controlling the workpiece exchanger and logic circuit.

9. to control the heat exchanger operational voices. The comparator circuit block 4 is feedback-coupled to the operating head operation magazine logic circuit 10, the automatic turntable control logic circuit 11, and the operating head preparation magazine logic circuit 12.

In the comparator circuit block 6, the actual position of the operational head magazines and the automatic rotary table are compared with the position entered in the respective matrix memory row. input data. In the event of their programmed and actual position ears, trays operating heads and automatic turntable. rotates to the desired position. The position, condition and operation data of the operational head magazines and the automatic rotary table are fed to logical circuits 10, 11 and 12 to evaluate the instantaneous states of the active machine nodes, to which information from the work unit control logic 7 is fed. a logic circuit 8 for controlling the workpiece exchanger and a logic circuit 8 for controlling the operating head exchanger. The rest position and the instantaneous state of all nodes meet the conditions for the working unit to cut, the blocking unit 15 surrounds the working unit control logic 7, and the unit performs the working operation.

The length of the working stroke is entered in the matrix memory from the input data and compared to the decoder block 3 with the length measured by the metering device 6. encoders of the logic circuit 7, to control the working unit, to stop and return the working unit to its initial position. The working unit control logic 7 gives a pulse to the shift register 14, via which the voltage is applied to the next line of the input data matrix 2 via the driver and the control part 7. If the current state of any active node of the machine does not match at the same time the desired activity of the other active node, the blocking unit 15 blocks the control and control part 7 of the machine tool and the logic circuit 6 for controlling the working unit. block 13 evaluating the instantaneous states of the active nodes of the machine evaluated the state of all active nodes as the state required at a given moment, b. kova ci. - jo.d, n otko- -bot Loku ·} · - 4M41 -eí -a -ov-Vád- »e4—64 st — i» «oteisábe-or · ^J stře- er cet ý ..... cy kush 'continues the described sequence. *

Claims (1)

SUBJECT OF THE INVENTION Involvement of automatic cycle control and continuous evaluation of instantaneous states of active nodes of multipurpose machine tools, especially modular multipurpose machines with automatic change of multi-spindle operating heads and automatic workpiece change, characterized in that it is connected to control and control part Z1 Z. matrix memory (2) of input data, to whose outputs is connected both block (13) evaluating instantaneous states of active machine nodes and block (3) of decoders, to whose outputs are connected Logic circuit (7) for control of machine working unit - together with a logic circuit (8) for controlling the rotary workpiece exchanger and a logic circuit (9) for controlling the operating head exchanger and comparator circuit block (4) to which the logic circuit (10) for controlling the multi-spindle operating head work stack and an automatic turntable control logic circuit (117), together with a multi-spindle operating head logic control circuit (12), wherein the work unit control logic circuit (7) is connected via a shift register (14) on the driver and control portion (14). 1 / and all other logic circuits (8 to 11) are connected to the block (13) evaluating the instantaneous states of the active nodes, to whose outputs the unit (16) is connected. signaling and blocking unit (15), which is further connected to the control and control part (1) and to the logic circuit (7) for controlling the working unit, while on the block (3) of the decoders is connected a counter (5) connected to device (6) connected to the logic circuit (7) for controlling the working unit,