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Drive and connecting apparatus of full digital numerical control system

A technology of numerical control system and connection device, applied in the direction of digital control, electrical program control, etc., to achieve the effect of fast response, flexible and intelligent control, and high reliability

Inactive Publication Date: 2009-09-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that in the existing numerical control system, when the CNC communicates with the peripheral equipment of the numerical control machine tool, part of the control data needs to undergo two conversions of A / D and D / A during the communication process

Method used

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  • Drive and connecting apparatus of full digital numerical control system
  • Drive and connecting apparatus of full digital numerical control system
  • Drive and connecting apparatus of full digital numerical control system

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Experimental program
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specific Embodiment approach 1

[0009] Specific implementation mode one: see figure 1 This embodiment will be described. The drive and connection device of the full digital numerical control system, which includes a USB2.0 transceiver 1, an encoder signal input interface 9, a current signal interface 10, a power drive interface 17 and a programmable logic device 20, in which the programmable logic device 20 A USB communication controller 2 is solidified for data transmission with the USB2.0 transceiver 1 and data serial / parallel conversion, and is used for servo control of the external power device according to the control signal sent by the USB communication controller 2 The servo controller 5 is used to receive the encoder signal sent by the encoder signal input interface 9 and convert it into a position signal and a speed signal respectively and transmit it to the encoder signal input controller 6 of the USB communication controller 2 and the servo controller 5, A current detection controller 16 for perf...

specific Embodiment approach 2

[0015] Specific embodiment 2: The drive and connection device of the full digital numerical control system described in this embodiment is based on the specific embodiment 1, adding an analog input interface 12, an analog output interface 14, and an A / D converter 11 , D / A converter 13, digital quantity I / O interface 15, in described programmable logic device 20, increase the digital signal that is used to receive digital quantity I / O interface 15 and transmit to USB communication controller 2, Also receive the digital signal that USB communication controller 2 sends simultaneously and pass to digital quantity I / O controller 4 of digital quantity I / O interface 15, be used for controlling A / D converter 11 according to the order that USB communication controller 2 sends Perform analog / digital conversion and transfer the conversion result to the USB communication controller 2, and simultaneously control the D / A converter 13 to convert the digital output of the USB communication con...

specific Embodiment approach 3

[0017]Specific embodiment three: this embodiment is to increase the stepper motor interface 8 on the driving and connection device of the full digital numerical control system described in the specific embodiment one or two, and in the programmable logic device 20, it is used to increase the interface according to the USB The pulse control signal that communication controller 2 sends produces the pulse signal generator 7 of pulse output signal, the pulse control signal input end of pulse signal generator 7 is connected with the pulse control signal output end of USB communication controller 2, and described pulse signal generation The pulse signal output terminal of device 7 is connected with the signal input terminal of stepper motor interface 8.

[0018] In this embodiment, a pulse signal generation function for controlling the operation of the stepping motor is added, and the stepping motor can be controlled.

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Abstract

A driving and connecting device of an all-digital numerical control system relates to a driving and connecting device in the numerical control system. It solves the problem that a data conversion card needs to be plugged in when the existing CNC communicates with a numerical control machine tool and its peripheral equipment, and that control data needs to be converted twice by A / D and D / A during the communication process. It transmits the data between the CNC and the device of the present invention through the USB2.0 transceiver, and the servo controller solidified in the programmable logic device sends corresponding control commands to the power drive interface according to the control signal transmitted by the USB2.0 transceiver, and the current detection The controller receives the current signal input from the current signal interface and sends it to the servo controller after digital filtering and current measurement. The encoder signal input controller receives the encoder signal input from the encoder signal input interface and converts it into a speed signal and a position signal respectively. , and then sent to the servo controller and passed to CNC via USB2.0 respectively.

Description

technical field [0001] The invention relates to a driving and connecting device in a numerical control system. Background technique [0002] A complete set of machine tool numerical control system is composed of several major hardware such as numerical control device (NC), drive system and detection device, among which the main control and transmission parts are numerical control device and servo system. Traditional servo systems only receive analog signals, so a numerical control device (NC) is required to output analog control signals. However, the real numerical control device based on PC, that is, the control function of CNC (Computerized Numerical Control) is realized by software, and the CNC directly outputs digital signals. In order to output analog signals to the servo system, an additional Develop D / A conversion interface. With the development of microelectronics technology and computer technology, modern servo systems are gradually turning to digitalization, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/414
Inventor 李凤阁佟为明杨锋李彬
Owner HARBIN INST OF TECH