Theory and Design of CNC Systems Part 11 pdf
Theory and Design of CNC Systems Part 11 pdf
... mentioned, the software design of a CNC system must be done to- gether with the design of the hardware and the operating system. As the design of the software architecture belongs to the stage of developing ... processor and memory were assigned for each function. Therefore, the former CNC systems were closed systems, in which the design of the CNC system depend...
Ngày tải lên: 11/08/2014, 20:21
Theory and Design of CNC Systems Part 14 potx
... 187 ADCBI, 107, 108, 128–155, 187, 211 ADCBI-type NCK – architecture, 211 address, 237 aging, 328 AGV, 4 AIM, 404 and – AND, 260 and not – ANDN, 261 and stack – ANDS, 266 application layer, 275 approximation ... function, 56 soft bus, 30, 416 soft PLC, 247–249 soft real-time system, 319 Soft-NC, 30, 248, 353, 355, 357, 359, 362–364, 366–369, 372–377, 388, 392, 393, 416 software model...
Ngày tải lên: 11/08/2014, 20:21
Theory and Design of CNC Systems Part 3 ppsx
... the interpreter of the CNC system is the soft- ware module of the NCK unit that interprets the part program consisting of G&M- code commands and related addresses such as S, T, and F. The interpreter ... understand the structure of a part pro- gram and the commands used therein. In a CNC system, various coordinate systems, such as the machine coordinate system, work...
Ngày tải lên: 11/08/2014, 20:21
Theory and Design of CNC Systems Part 4 potx
... number of the pulses from rough interpolation and Acc/Dec control at time i. t ipo is the it- eration time of rough interpolation and N is the ratio of the iteration time of rough interpolation and ... 4 Acceleration and Deceleration In order to smooth the movement of a machine, the acceleration and deceleration for the movementof the machineaxes should be controlled. For...
Ngày tải lên: 11/08/2014, 20:21
Theory and Design of CNC Systems Part 5 potx
... Acceleration and Deceleration trajectory is inversely proportional to the feedrate and sudden changes of feedrate result in reduction of accuracy of the CNC equipment. In the ADCBI type of NCK, the ... connected it is possible to classify pairs of blocks into twelve types depending on the type of block (e.g. normal block and short block) and the difference of commanded...
Ngày tải lên: 11/08/2014, 20:21
Theory and Design of CNC Systems Part 6 pptx
... execution algo- rithms and implementation by pseudo-code. In this chapter, only the design of NCK will be described and the overall design of the CNC system where the PLC and MMI units are included ... reference on design of digital drive systems. Figure 5.14 shows the architecture of a speed feedforward controller where the posi- tion command, α w ,isfiltered and the...
Ngày tải lên: 11/08/2014, 20:21
Theory and Design of CNC Systems Part 8 ppsx
... standard IEC1131, is the international standard for PLC, consisting of five parts and IEC1131- 3 is one of the parts of which IEC1131 is composed. 1. IEC1131-1: PLC General information. 2. IEC1131-2: ... Soft NC, Soft NC and Soft PLC can be regarded as the same system. Soft PLC which is made by a user interface and the PLC kernel based on the IEC1131-3 can be regarded as partial s...
Ngày tải lên: 11/08/2014, 20:21
Theory and Design of CNC Systems Part 9 potx
... task is called CNC programming. 8.3.1 The Sequence of Part Programming Roughly, CNC programming is composed of the generation of a process plan from a part drawing and the generation of the part program. ... used on the shop floor and has a good effect on productivity. In this text book, the design and development of Shopfloor Oriented Programming systems embedded...
Ngày tải lên: 11/08/2014, 20:21