数控专业毕业设计外文翻译6-数控设计(编辑修改稿)

数控专业毕业设计外文翻译6-数控设计(编辑修改稿)内容摘要：

he calculation of its capability has been substantially reinforced. In the digital control, the oute of the traditional reception in the NC MCUbased control units were 6 replaced by digital puters. Initially small puter was used in 1970, and the further development of small puter, making today39。 s microputer has replaced the small puter. Computer digital control is to use a mechanical control unit for the NC specialized microelectronic system. CNC and DNC used a digital puter, because it can distinguish between the two different types of systems. These two systems are three main differences: DNC puter to transmit data to a large number of machines and receive data from, and CNC can only control one or a small number of machines. DNC puter can be remotely controlled, and the only shortrange puter CNC control. DNC software not only as a single product to be developed, but also as an important manufacturing data management system. DNC software development work to increase the working capacity. Computer digital control system versions such as the overall structure of Figure . Plans can be seen by Reading with control of access to the system for the first part, in this regard, puter numerical control system is similar to the traditional appearance of a digital control system However, the scheme used in puter numerical control system is different. in the traditional digital control system, through the perforated paper for the Reading with a working part of each volume cycle. Microprogram controller in a tape in the process, read, in the implementation of a preimplementation of this one. In puter numerical control, the entire process once they are imported and stored in the puter39。 s memory. Machine for each part of the cycle is stored in the puter memory from the process control instead of the content of their tapes. Included in the puter control system to some of the procedures introduced into the machine tool operations (or other processing equipment). Some features from the MCU circuit ponents in the hardware implementation. For example, the insertion of recycling often run by the hardware circuit rather than stored procedures. At the same time, hardware interface to the machine tool servo system to match. (3) characteristics of CNC control system In front of the machine control described in the digital control of the characteristics and importance. CNC mon in the rigid procedures microcontroller functions by adding additional features. Some of these include the following: 1) be able to store a number of procedures. With the progress of puter 7 technology, many puter updated digital control system strong enough storage capacity to more single process. Such a change storage capacity to store a large number of procedures or shortor mediumsize procedures. 2) the use of floppy disks. In the largescale manufacturing sector, the process in the floppy disk usage on the rise. Capacity of the previous eight times. Equivalent to the capacity of a floppy disk or close to 8,000 feet long perforated paper. As more modern storage technology, many puter digital control system have a stronger ability to read stored in the floppy disk or perforated paper on the procedure. 3) in the work of editing procedures. Procedures for the revision of some mistakes, CNC system allows the memory to modify procedures table. Therefore, the test procedure and makes machines that can read better than to return to the design room to amend scallops. Apart from the revised procedures, mechanical cutting cycle in the state which can be edited to achieve optimum cycle. Laws and procedures to achieve optimization, scallops perforation and to obtain the edited version of scallops can be connected with the CNC controller. 4) fixed cycle and design procedures. CNC enhanced control over the puter storage capacity and capabilities. That the frequent use of the storage processing cycle procedures can be visited from the list. Instead of a coding process to enter each table in the special directive was written into the schedule refers to the cycle be executed. Some cycles of operation, the need to set specific parameters. For example, a bolt hole, the bolt hole diameter hole in space, and other parameters must be specified. In other cases, special processing parameter definition does not require processing cycle. 5) interpolation. Some interpolation because of the requirements of the programme only in the implementation of a CNC system. To linear and circular interpolation, normally takes to access control unit. Spiral, and the squareshaped parabolic interpolation usually in a preservation program prepared to run. 6) the importance of positioning equipment. For a specific work in the machine settings, including installation and proofreading work table fixture. In order to machine the workpiece spindle and alignment, which must be pleted. Alignment of CNC system software to work its possible options to achieve specific characteristics. Been set by the location, operators need to determine the fixture table deviations. Machine Tool Spindle fixture will be the location for the creation of reference points, or reference plane or in the workpiece fixture on the position. 7) Tool length pensation. This is similar to the aforementioned features, but 8 applicable to the work tool length and diameter. In the old design of the controller, tool size must be fully consistent with the definition of the procedures in the design path. A path to ensure that the tool is designed with the requirements of the CNC controller. One of the ways is in the MCU in the importation of the actual size of the current tool, which may be the size of the initial preparation and the different procedures. Such pensation from the puter automatically calculate and adjust. Another new method is used in。