CAD/CAM software technology reachs his to apply mediumly in numerical control machine tool
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source:MCGUFFIE CNC Machining
CAD and make (CAD/CAM) technology applies already increasingly in CNC Machining domain, CAD/CAM software technology also is developing at full speed, appeared a lot of software products, these products reach his according to the development class of oneself comfortable expenditure, be applied extensively in different treatment circumstance, saved the time cycle that the design makes greatly, raised precision and rate on certain level. Machine tool of 1 numerical control and technology of CAD/CAM numerical control are machining technology, microelectronics technology, monitoring detects of a variety of course such as technology, computer technology, automata technology compositive, be burgeoning and the new and high technology with very rapid development, have very main effect to the development of Electromechanical industry and national economy. In the meantime, numerical control technology also is the base that develops automation technology. The numerical control machine tool that is core with numerical control technology, machining center is to have representative, Electromechanical unifinication product of Gao Shuiping, represented the forward position that technology of current world automation expands. Show system of acting numerical control, used communication number servo. The position of servo electric machinery, speed and electric current realize digitlization, as servo control means also was used exceed the control theory previously, came true not to suffer mechanical bear to change the high speed of the influence answers servo. From the point of the development of world servo, had experienced a pace to enter → of electric machinery of → of electric machinery of servo of dc of electric machinery → to communicate phase of servo electric machinery. Current, machine tool of domestic major numerical control did not provide special CAM software, so this task has very extensive development space. CAD(ComputerAidedDesign) , namely CAD, be a kind of production assists a tool in CNC Machining process, its accurate computer high speed operation function, high capacity stores and handle the ability of data, the creativity thinking ability of function of rich and agile graph, word processing and architect, integration analysis and union of logistic judgement ability rise, form the system that an architect thought and computer processing capability coordinate cheek by jowl, accelerated design process greatly. Does CAD technology include following function: ? Negative call ! ⒓ attacks Zhui treats こ of ⒐ of Jin of of glare of male of lift up of sunken border of ability of Qiang of ⒒ of Luo of flute of Long of Shan of brandish of ⒎ of an ancient wine vessel made of horn to drip AM(ComputerAidedManufacturing) of rancorring of silkworm of protruding of Che of Fei of grave of Song badger, namely CAM. CAM content is extensive, tell the staff that those who point to is numerical control degree from narrow sense, the program that includes cutting tool method, Dao Weiwen generate, cutting tool contrail is emulated and of NC code generate etc. CAD and make machine union with numerical control machine tool, it is now the main trend that technology of numerical control machine tool uses, can achieve very ideal treatment result. The NUT series numerical control that institute of control of sports of Nanjing industry college produces carves a machine tool to use control plate card and PC connection, electric part of; of electric machinery of numerical control of control of interface of Windows operation control uses function of;CNC Machining of servo of the communication below the pine: X, y, z3 axis linkage, 5000r/min of top rotate speed, coder pulse outputs 16384p/r, rotate speed of main shaft cut can amount to 15000r/min, ; of stepless speed regulation machines the largest size: 2× 120mm of 400mm × 2400mm, pulse equivalent: 01001mm. Use all sorts of CAD/CAM software to will machine a thought to generate G code through a series of operations of software, use executive operation software to carry out code to process finished product then. The machine tool of NUT series numerical control that proper motion of institute of control of sports of Nanjing industry college studies to design, was united in wedlock engraving tool machines software with all sorts of designs. A few move that for the graph from the computer design, treatment substantially that makes a machine tool 1 flow place shows and module. Very much to the requirement of software in this whole technological process, besides the machine tool electric move beyond, the software that cannot leave the computer almost is made. Can divide again roughly to software for the following parts. (1) designs software to undertake the scale of the spare parts, be like very popular plot software AutoCAD and UC, PRO/E, the design software of three-dimensional artistically is like 3DMax, photoshop. Here not just software of CAD of bureau be confined to, also include to be able to use all sorts of other software of implementation treatment. (2) makes software point to CAM software normally, generate treatment code finally. Major production software also has function of the plot that build a model. According to making applied circumstance different cent is 2 dimension, 2 dimension are mixed partly three-dimensional CAM software. Like: ? Bake glue AXA of 6 Mo , CAXA makes engineer and MasterCAM, artCAM, cimatron. Production software generates G code of the standard, the idea that gives the design next shapes in the treatment on the machine tool, send a machine tool NC code namely, the machine tool comes out according to instruction treatment, basically include to set treatment environment, the setting machines working procedure, make orbit file, reach postposition processing to wait. (3) carries out software machine tool to carry out NC code treatment, its basically work is the communication of the computer and numerical control machine tool, can finish data through COM interface serial communication, perhaps realize collateral communication through LPT. This understands different manufacturer to differ to mix even the line to application of its communication interface with respect to need interface agreement. But be in actual in, what people often uses is control plate card namely controller of so called machine tool. These board card undertake contacting through data line and numerical control machine tool, and with the person between it is the software program that offers by these board card is finished interactively, major now software program is Windows interface, simple Yi Cao is made, the article calls these software executive software, dictate according to code direct machine tool completes the software that the spare parts machines namely. Be like German Editasc, american PMAC controls card and its software product, install these software while it is in the system to load the driver that motion blocks, still can use these driver to undertake 2 times developing. The file changeover design between data of 2 different software makes software more, and applied limits has each different, differ so between software also be the issue that the architect must consider interactively. Be like, the input of graph of mould spare parts that how will design in CAD software arrives in CAM software, set cutting tool parameter and cutting tool way according to the requirement again, how does the designs software three-dimensional model that uses CAM software to generate CAD of other blame of NC code; automatically let CAM software identifying. This issue had considered when each company makes a design make software, every software has the data with other software to change interface almost, these interface can undertake with respect to body file format is changed now. These software support a variety of file forms, the file format that can be in a kind to file of software lieutenant general is saved or derive other and relevant software supports so, be opened in relevant software again next or guide in this file. However, what this kind of transition divides a case as much is different should make proper adjustment. For instance: ? Software of Du Zuo AM accepts Dxf file, but CAD hypostatic file changes CAM to must use CAD hypostatic graph to undertake the file is changed in MasterCAM to also need to do likewise with Stl format decomposing;3DMax with Dxf format a few amend, what because be being changed,may be data in the process is missing. A kind of best changeover form is sought in the software that differs in two with respect to need so. Transaction file of postposition of 3 postposition transaction file is CAM software a peculiar kind of setting file before NC code is generated. Because do not have the specific CAM software that is aimed at machine tool of some kind of numerical control, and machine tool of every numerical control is right G code namely the format of NC code asks to differ, it is the postposition file of CAM software to generating what action decides since NC code, want to undertake proper adjustment to its so, with NC of intromit machine tool code can be identified. Postposition processing is process of processing of editor of a text actually, the knife course that its action gives consideration namely (knife athletic contrail) with standard format translate into of the regulation NC code is outputted, software of this code repass transmits the controller of numerical control machine tool to go up, press machine tool of program statement drive to machine by controller. For example, machine tool of NUT series numerical control is used at electric experiment, the G code that executive software identifies is G00, g01, the setting that wants to undertake as follows before generating G code in CAXA design so: (1) " application " , " is postposition handled " , " is postposition installed " in " does postposition treat a setting " in have " does postposition file expand a: ? Nai?nc;(2) " postposition treats a setting " lieutenant general G00, g01, the head statement that the;(3) of statement take out besides will make a file and; of terminal statement take out should be in when generating G code with ArtCAM all machine tools that do not need carry out the lieutenant general of postposition file Axyz1con of ArtCAM software is not before identifying a statement, use entirely " . Use MasterCAM should be in its " aftertreatment form " the document that suffixal name alters to be 1PST in window body, also should do to this file revise accordingly, delete the statement that does not identify to explain, won't appear in generated NC code file so this kind of statement. The compositive system of 4 CAD/CAM is mixed as CAD/CAM technology the development of computer technology, people is satisfied at this both independent development no longer, appeared thereby the combination of CAM and CAD, be about to both and compositive (unifinication) , design the requirement with production automation in order to suit so, the CIMS that appears in recent years especially (the requirement of CIMS) . The input message that the spare parts information that union of this kind of unifinication can make in CAD the design is generated changes automatically into CAM place to need, those who prevented information data is missing. Design of products plan, procedure and product treatment are made compositive in a system, improved manufacturing efficiency. Accordingly, we give CNC MachiningCAD/CAM in the development in CNC Machining application compositive system, compositive system with respect to leave out intermediate trival data transition. The exchange that the key with compositive CAD/CAM is information and share, wait like UGII, Euclid, Pro/E, in compositive software interior it is the data format that unites with interior get product geometry model from CAD system directly. At present a lot of three-dimensional CAD/CAM software offer entity to design module and software package. What we use is the hypostatic function building a model of UG and Pro/E, include the geometrical form of the spare parts, dimension and technical requirement; use the CAM software with peculiar Pro/E to wrap next, build cutting tool warehouse, the interpreter file that the craft parameter; that finishs pair of products includes through software finally translates document of cutting tool contrail into G code, enter executive software to undertake the machine tool machines a process. Use advanced language VC to finish software the bag reachs the process with relevant compositive drive. The module of compositive CAD/CAM system still is shown 1 times for the graph. The development of computer of 5 last words reachs the development of software industry, improve what driving CAD software ceaselessly. CAD/CAM technology is facing the directional development of open, compositive, intelligence and standardization, on numerical control machine tool apply more and more extensive, the DNC that is a foundation with PC technology opens type system to make the development way of software, and an impervious times is not had in this network, the technology of CAD/CAM also develops in network, technology of PC of have the aid of can realize network news report expediently, satisfy manufacturing requirement OK and efficiently. Be in for instance the lab of the college, it is very pressing that the network of experimental equipment is shared, use the band of network technology and CAD/CAM technology, build CAD/CAM to design, code is transmitted, the machine tool is carried out, of network monitoring is whole flow share, can come true all teachers and students is common a few even machine tool of a numerical control, make full use of equipment, saved capital and time greatly. CNC Milling