CN201749327U

CN201749327U - Laser movement controller

Info

Publication number: CN201749327U
Application number: CN2010202827393U
Authority: CN
Inventors: 李迪; 王世勇; 张舞杰; 叶峰; 赖乙宗
Original assignee: ADVANCED INTELLIGENT MACHINE Co Ltd
Current assignee: ADVANCED INTELLIGENT MACHINE Co Ltd
Priority date: 2010-08-05
Filing date: 2010-08-05
Publication date: 2011-02-16
Anticipated expiration: 2020-08-05

Abstract

The utility model discloses a configurable and reconfigurable laser movement controller capable of controlling a plurality of laser processing devices. The laser movement controller comprises a DSP computation sub-system and a FPGA logic control sub-system connected to the DSP external bus. The FPGA is an IO control core, comprising eight lines of analog quantity input and eight lines of analog quantity output which control the movement of a motor with eight shafts, and 16 digital quantity input and 16 digital quantity output which achieve the sync control of laser on-off, laser power and laser movement. Through the computation capability of DSP and the sync control logic function of FPGA, the utility model achieves the sync control of each function module of laser movement.

Description

A kind of laser motion controller

Technical field

The utility model relates to technical field of laser processing, particularly relates to the movement control technology of laser.

Background technology

Laser process equipments such as laser cutting machine, laser marking machine, laser-beam welding machine are typical light, mechanical, electrical integration apparatus.A typical laser process equipment is become by laser component, controller part, four groups of subsystems of servo driving parts and mechanical part, and each subsystem is made up of several parts again.Laser subsystem is made up of laser instrument, Laser Power Devices, cooling device etc.; Control device subsystem is made up of control integrated circuit board, display, guidance panel etc.; The servo driving subsystem is made up of driver, servomotor, gear train etc.; Mechanical part is made up of laser head, worktable, guide rail etc.

Controller is the brain of laser process equipment, plays crucial effects to guaranteeing machining precision, process velocity.Because the requirement of processing technology, the Laser Processing controller not only needs to satisfy requirements such as reliability that most of digital control system has, stability, high-speed, high precision, also need to possess synchro control, the open and close control of the laser of motion control, galvanometer control, laser power control, laser power and motion simultaneously, the automatic adjusting of power, the automatic compensation of light decay, flight light path, seam are wide, the scalable control of processing verticality, the function such as integrated of the processing of graphic file, man-machine interaction, digitizing processing.

The exploitation of controller relates to numerous soft, hardware technologies and a large amount of algorithms, long, debug difficulties of construction cycle.Traditional development approach is at specific laser process equipment, adopt special-purpose motion control chip to carry out the exploitation of controller, in case exploitation is finished, soft, hardware capability is fixed, can't adjust according to user's needs, thereby increase the exploitation and the required cost of device upgrade of new product.Develop a kind ofly towards field of laser processing, be applicable to multiple laser process equipment, the controller with certain flexibility has great importance undoubtedly.

The utility model content

Goal of the invention of the present utility model is to provide a cover towards field of laser processing at the deficiencies in the prior art, has configurablely, the restructural characteristics, can control the laser motion controller of multiple laser process equipment.

For achieving the above object, the utility model is achieved through the following technical solutions: a kind of laser motion controller, constitute with the fpga logic control subsystem that is connected by the DSP external bus by DSP operator system, described FPGA is an IO control core, the input of 16 bit digital quantity and the output of 16 bit digital quantity that have the input of 8 tunnel analog quantitys and the output of 8 tunnel analog quantitys of control 8 spindle motors motion and realize laser keying, power and laser motion synchro control.Utilize the computing power of DSP, carry out calculating such as complicated motion planning, interpolation operation, error compensation,, realize the synchro control of each functional module of laser motion by the synchro control logic function of FPGA.Wherein the drive controlling of 8 spindle motors is responsible in input of 8 tunnel analog quantitys and the output of 8 tunnel analog quantitys; Input of 16 bit digital quantity and the output of 16 bit digital quantity are responsible for laser and are opened and closed and laser power control, the keying of 8 bit digital quantity input wherein and 8 bit digital quantity output control Laser Power Devices, and AD﹠amp is passed through in addition input of 8 bit digital quantity and the output of 8 bit digital quantity; The analog quantity control laser power that the DA expansion card generates.

Described laser motion controller has pci interface, carries out exchanges data by pci bus and PC end, and described pci interface is 32 pci bus interfaces, meets the Rev2.2PCI standard, and bandwidth is 33MHz, supports plug and play.

Adopt the beneficial effects of the utility model: described laser motion controller is in conjunction with software platform, the controller driver of PC end calls the controller api function that the DLL form provides, needs change interface logic according to different laser process equipments, the total function of laser process equipment and peculiar function distinguishing are come, carry out modeling respectively, development function storehouse and module library, functional module has the interface of standard, inner function module by editor FPGA subsystem, realize the quick reconfiguration of motion control, have configurable, restructural, control the laser motion controller of various laser process equipments.

Description of drawings

Fig. 1 is the utility model laser motion controller architecture block diagram;

Fig. 2 is AD﹠amp; DA expansion module structure block diagram;

Fig. 3 is an I/O terminal module structure block diagram.

Embodiment

Below in conjunction with accompanying drawing, a kind of laser motion controller, constitute with the fpga logic control subsystem that is connected by the DSP external bus by DSP operator system, described FPGA is an IO control core, the input of 16 bit digital quantity and the output of 16 bit digital quantity that have the input of 8 tunnel analog quantitys and the output of 8 tunnel analog quantitys of control 8 spindle motors motion and realize laser keying, power and laser motion synchro control.

8 servo or stepping axles that described laser motion controller is supported, every Electric Machine Control mode can be configured to pulse+direction, quadrature AB phase pulse or analog quantity; Every all has spacing, the reverse spacing and initial point signal of the forward of isolating through photoelectricity; Every all has the INP that isolates through photoelectricity, ALM, and SRDY, ERC, servo-control signals such as SON, INP wherein, SRDY, the ERC signal can be configured to universal I; Have 8 shaft encoders and 2 auxiliaring coding devices, supporting location latchs with Z and returns the zero power energy mutually, and the decoding multiplying power is x1/x2/x4, incoming frequency≤15MHz, input A/B/Z phase, on/following pulse.

Described laser motion controller has synchronous start and stop control, anxious stopping transportation is gone into and the input that resets; Have the hardware controls position and latch at a high speed, incoming frequency is up to 15MHz; Has the relatively output at a high speed of hardware controls position.

The manual pulse input of described laser motion controller support control can be set x1/x10/x100/x1000 multiplying power or arbitrary integer multiplying power.

Described laser motion controller has input of 16 bit digital quantity and the output of isolating through photoelectricity of 16 bit digital quantity; Have 8 tunnel difference or the input of 16 tunnel single-ended analog quantitys, have 8 tunnel difference or 16 tunnel single-ended analog quantitys outputs, the conversion accuracy of analog quantity and digital quantity is 12, scope can be set to+-2.5V ,+-5V or+-10V.

All IO light of described laser motion controller are isolated, and isolation voltage 3750Vrms latchs input light at a high speed and isolates 2500Vrms, but photoelectricity isolation input signal software parameter is set significant level;

Described laser motion controller has 2/3 linear interpolation, 2 circular interpolations, continuous little line segment interpolation, NURBS interpolation, bitmap cleaning, polygon cleaning and NURBS cleaning function.

Described laser motion controller has trapezoidal and S shape acceleration and deceleration function.

Described laser motion controller has 4 tunnel width modulations output, and (PWM3 PWM4), is used for laser energy control or frequency control for PWM1, PWM2.

Described laser motion controller can compensate the laser ON/OFF to postpone, but and ON/OFF software set time delay.

Described laser motion controller has three kinds of laser energy control modes.The energy following pattern: laser output power accompany movement velocity variations and changing, the user also can be provided with laser energy output maximin; Engraving or image sweeper mode: be used to realize the function of laser image scanning, the core control function is finished by hardware, and speed is fast, precision is high; Intersegmental direct output mode: the user can set the laser instrument output energy of different tracks section, finishes the cutting or the gradient engraving of different figure layers;

The utility model is described in further detail in conjunction with the accompanying drawings, and as Figure 1-3, the hardware platform of laser motion controller comprises laser motion control card 1, AD﹠amp; DA expansion card 2 and terminal strip 3.With AD﹠amp; DA expansion card 2 inserts laser motion control card 1, then laser motion control card 1 is gone into the PCI slot of PC, can constitute the Laser Processing control system of upper and lower machine form behind the driver of installation laser motion control card 1.

The API of PC end Laser Processing software transfer laser motion control card 1, with required motion command, machined parameters, laser parameter etc. sends to laser motion control card 1, thereby starts the Laser Processing order.The motion control commands that laser motion control card 1 generates is delivered to lathe by terminal strip 3, and the driving device parts carry out required motion; The open and close control of the laser order that laser motion control card 1 generates is delivered to Laser Power Devices by terminal strip 3, and the control laser instrument carries out the switch photocontrol; The laser power control signal that motion control card 1 generates passes through AD﹠amp; DA expansion card 2 generates analog quantity and delivers to Laser Power Devices, and the control laser instrument sends required laser power.By the coordinate synchronization control generation required track of motion with laser.

Claims

1. laser motion controller, it is characterized in that: described laser motion controller is made of with the fpga logic control subsystem that is connected by the DSP external bus DSP operator system, this laser motion controller is controlled the motion of 8 spindle motors, has the input of 8 tunnel analog quantitys, the output of 8 tunnel analog quantitys, the input of 16 bit digital quantity and the output of 16 bit digital quantity.

2. a kind of laser motion controller as claimed in claim 1 is characterized in that: described laser motion controller has pci interface, carries out exchanges data by pci bus and PC end.