CNC machining is getting more and more attention from the processing industry. In general, people use the numerical control rate of machine tools as a mark of advanced manufacturing. An important factor affecting the control of CNC machine is CNC programming. There have been data showing that 20%~30% of CNC machine tool shutdowns are due to the inability to edit the processing program. Therefore, the manufacturers of CNC systems are high CNC. The programming ability of the system is an important indicator. CNC machine tools ask mu, after more than 50 years of hard work, gradually reduce the CAM's ability, and its own programming ability has been greatly improved.
The rich programming ability of turning has already made CAM sigh. The following is an example of milling processing to introduce the current status of programming capabilities of CNC systems.
According to the shape and processing method of the part, it can be divided into holes (including earning L), and the X-axis system of contour and excavation surface is a total of 12 fixed cycles, and the package inserts the hole (the tongue is drilled, the deep hole! Divided into two types: chip removal and chip breaking)), tapping (including ordinary tapping and rigid tapping, left-hand thread and right-hand thread), boring (including rough and semi-finished Tengten), street humiliation Programming becomes simple and practical. The machining axis can be on the shaft or on the shaft or boring, and the function is convenient and flexible. In addition, the system has thread cutting and a single hole machining. The system also has a macro function such as bolt holes (circumferential holes) and matrix hole groups, which makes the description of the hole position quick. It is also possible to program the angular holes with the angular programming function using the polar coordinate command, and it is not necessary to calculate the coordinate values ​​of the hole positions in the Cartesian coordinate system. Peer-to-peer 3 macropores, with a programming function of a position, can describe 9999 holes, greatly simplifying programming, and high programming efficiency.
The system generally provides linear and circular interpolators. When describing linear and circular contours, the calculation of the base point affects the programming efficiency. For this reason, the system provides contour simplified programming functions, such as AB CTL programming, NUM PGP programming, GAP programming by ECS of Italy, etc., to solve the problem of automatic calculation of the base point.
Mill the contour with a milling cutter to program the part contour. Use the plane tool radius to compensate for the compensation function, and change the knife compensation h to change the size of the zero cow. Rough and finishing can share a single program. No one has programmed the contours with the heart of the knife.
The line and arc contour can be programmed with a macro program when the mathematical formula is described. The system automatically calculates the contour node and approximates the contour with a straight line or an arc. The step size can be adjusted arbitrarily, without increasing the length of the machining program, and it is easy to modify and observe, and has achieved good results. Recently, the numerical control system has developed a spline interpolation device, which makes the contour processing of the list points become uniform.
Some systems have a C-axis normal machining function that can machine shaped slots. The system also provides 7tb functions such as rotating the mirror with the mirror image, which greatly simplifies programming. Tb, such as a sprocket, only needs to make one tooth, and how many teeth need to indicate how many times to rotate, instead of having to program each tooth> In the roughing of the workpiece with the whole material, the cavity (flat bottom) occupies For this reason, a large programming program has developed a cavity macro for each system. For the cavity of the cymbal, such as the cavity of the round cavity with rounded corners, and their combination, it is only necessary to program a block with a macro, and the cavity can be processed in multiple layers. For irregular cavities, even cavities with islands can be handled automatically.
Now, in addition to programming with code, the system also develops 7 brewing programming functions, such as MAZAKFANUCFAGOR and other companies have developed session programming functions. With graphical input, the system automatically generates a machining program.
3 Space curve, surface processing programming In the past, this has always been the domain of CAM, but now it has faced the CNC's m-parameter curve with mathematical formula description, which can be programmed with macro program function. Some systems have also developed spatial circular interpolation, which provides a powerful tool for the processing of space curved surfaces. In order to make the three linear axis linkage machining surface more flexible, the system developed the space tool radius compensation function, which can not strictly stipulate the tool size. Some even developed surface interpolators, using free-form surfaces described by discrete points, the processing program will be reduced by a factor of 1000.
The stomach of the CNC system is getting bigger and bigger. In addition to the real-time control of the machining movement, the mechanical logic control of the machine tool is included, that is, the PM is built in. Recently, the background editing function has been developed, that is, the foreground processing is performed, and the background is performed. Programming. Some systems can even run automatic programming software, and some have a process database that can automatically select the cutting parameters. Set CNC-CAV as one.
The system also provides a rich graphical display function and program test debugging function to check the correctness of the program. The system also has a measuring function, which can be equipped with a probe to realize the processing-measure integration, and realize the purchase of a Cq gas laser cutting machine for the processing tool TRUMPF. The model of the equipment is TC3030, the laser output power is 18kW; the cutting thickness is the maximum cutting thickness of the stainless steel plate is 6nmi carbon steel plate, the maximum cutting thickness is 12m; the cutting plate surface range (long x competition) is (3000nnK1500. Programming System This programming system is a computer-aided system for part programming and nesting developed for CNC cutting machines. It can form the whole production process (package-assisted process) into a whole and systematically organized. Users can tear in each other. In the question and answer mode, using the various graphic input means provided by the system, it is convenient and flexible to establish the edited part shape and realize the steel plate nesting. The modern production method is integrated with the modern one. The programming machine compiles the program and passes the floppy disk or local area network. The input to the control system of the cutting machine can be cut by starting the cutting machine. It can also be easily programmed on the cutting machine. The laser cutting system flow of the borrowing machine is shown in the figure.
Due to the small size and variety of our products, the sheet metal structure has more cattle, and the graphics are more complicated, the production cycle is short, and the use of laser cutting machine brings great convenience to the manufacture and processing of our products. Guaranteed product quality and delivery time.
Inch throat. Some CNC systems have more than one machine capable of controlling one machine, and two or more tracks can be made. The two-track CNC system can run two machining programs at the same time, and the two parts are processed simultaneously. The system also has a synchronous follow-up control function that enables simultaneous machining of multiple identical workpieces. In short, the functions of the CNC system are greatly enriched.
However, with the use of the DNC system. CNC systems also have a tendency to reduce. According to the connection mode of the machine tool group and the computer, the DNC system can be divided into three types: indirect type, direct type and computer network type.
The indirect CNC is managed by the host computer. The part processing program is all placed in the host computer. The machining is transferred from the host computer to the machine tool numerical control device. The CNC system only retains the control functions such as interpolation calculation.
The direct type DNC is that the machine tool is no longer installed with the CNC, and there is only one machine controller that is made up of the servo tube. The calculation of the machining process is also performed by the host computer. At this time, the CNC machine tool cannot work independently from the host computer.
The computer network DNC is to make the work of each CNC machine tool network with the computer of the whole factory to form a large and complete manufacturing system. The current manufacturing industry is still dominated by stand-alone use, and the richness of the CNC system has improved the life. =* Sun is interested in the products mentioned in this article. Please use the laser cutting system flow as the main symbol of the development of science and technology in the 20th century. And one of the pillars of modern information society optoelectronic technology, the development of laser technology and laser industry is highly valued by the world's advanced countries. Hey, laser cutting technology is restricted by factors such as unbalanced CA application and high price of laser cutting equipment. Laser cutting equipment has not been used in many enterprises and small and medium-sized enterprises, but I believe that with the entry of China and laser technology and products The maturity of laser processing technology has brought unprecedented prospects to China's manufacturing and processing industries.
For those interested in the products mentioned in this article, please call: 010~68994816
(Finish)
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