Theory and Design of CNC Systems Part 4 potx
Theory and Design of CNC Systems Part 4 potx
... 20 4 3 10 0 30 6 4 10 0 40 85 0 0 40 86 0 10 30 67 0 10 20 4 8 0 10 10 29 0 10 0 0Σ 40 48 As shown in Table 4. 2, the maximum value of output pulses is 8 and this is lessthan the number of ... isrepresented by Eq. 4. 19.X(0)=Y(0)=0 (4. 19)If we approximateΔt,ΔX ,and ΔY with dt, dx,anddy respectively, Eq. 4. 16,Eq. 4. 17, Eq. 4. 18, and Eq. 4. 19 can be expressed as Eq. 4. 20.3.3 Software Interpolator ... Fig. 4. 4, are used for the Acc/Decfilters of CNC systems. By using various digital filters different output profiles canbe obtained even when identical input pulses are used.Equation 4. 4, Eq. 4. 5,...
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Theory and Design of CNC Systems Part 14 potx
... 54 G75, 54 G76, 54 G80, 54 G81, 54 G82, 54 G83, 54 G 84, 54 G 84. 2, 54 G 84. 3, 54 G85, 54 G86, 54 G87, 54 G88, 54 G89, 54 G90, 41 , 43 , 45 , 54 G91, 41 , 43 , 45 G92, 54 G 94, 54 G96, 53G97, 53G98, 54 G99, ... 51G 44, 51G49, 51G50.1, 42 G51, 41 G51.1, 42 G 54, 41 G55, 41 G56, 41 G57, 41 G58, 41 G59, 41 G61, 48 , 126G62, 49 G63, 49 G 64, 48 , 49 , 126G68, 42 G70, 54 G71, 54 G72, 54 G73, 54 G 74, 54 G75, ... 2 14 functions – Mapping, 226functions – POS, 209functions – RoughInterpolation, 223functions – scal, 202G-code, 37, 397, 398, 43 1, 43 4, 43 7G00, 43 , 47 G01, 44 , 47 G02, 44 , 47 G03, 44 , 47 G 04, ...
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Theory and Design of CNC Systems Part 5 potx
... method of determining the cor- 4. 4 Look Ahead 147 0 5 10 15 20 25020 40 6080100120 140 160Time(s)Velocity(mm/min)Fig. 4. 30 Speed profile for circular profilespeed of the current block zero and ... 139TD1=F1−FD (4. 74) TC1=L1−F212A−F21−F22DF1 (4. 75)The speed profile of the acceleration interval of Block N1 can be obtained byEq. 4. 73 and Eq. 4. 55. The speed profile of the deceleration ... make the end 142 4 Acceleration and DecelerationDuring circular movement, the speed of each axis is computed by Eq. 4. 83 and the acceleration of each axis is computed by Eq. 4. 84. Vx= F cosωtVy=...
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Theory and Design of CNC Systems Part 9 potx
... taskis called CNC programming.8.3.1 The Sequence of Part ProgrammingRoughly, CNC programming is composed of the generation of a process plan froma part drawing and the generation of the part program. ... GO/ON,LI82,TO,(PLANE/0.0,0.0,1.0,1.0),TO,LI83 CUT INDIRV/0.36 244 54, 0.932005,0.0 TLLFT, GOFWD/LI83, PAST, LI 84 GORGT/LI 84, TANTO,CI58 GOFWD/CI58,TANTO,LI85 THICK/0.0,0.13,0.0 GOFWD/LI85,ON,(LINE/(POINT/6.25,-1.255,1.0),PERPTO,(LINE/$ ... used on the shop floor and has a good effect onproductivity. In this text book, the design and development of Shopfloor OrientedProgramming systems embedded in CNC systems and used on the shopfloor...
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Theory and Design of CNC Systems Part 1 pps
... Corner Speed of Two Blocks Connected by an Acute Angle 142 4. 3 .4 Corner Speed Considering Speed Difference of Each Axis . . 144 4. 4 LookAhead 145 4. 4.1 Look-Ahead Algorithm . 147 4. 4.2 SimulationResults ... Contents11 .4. 2 Part1 0:GeneralProcessData 40 511 .4. 3 Part 11: Process Data for Milling . . . 40 711 .4. 4 Part1 2:ProcessDataforTurning 40 711 .4. 5 Tools for Milling and Turning . 40 811.5 PartProgramming 41 011.5.1 ... 41 011.5.1 Part Programming for the Milling Operation . . . 41 111.5.2 PartProgrammingfortheTurningOperation 41 411.6 STEP-CNCSystem 41 511.6.1 TypesofSTEP -CNC 41 711.6.2 Intelligent STEP -CNC Systems 41 811.7...
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Theory and Design of CNC Systems Part 2 doc
... make the part pro-gram without knowing the actual machining tool-length. G43 and G 44 are the codesfor commanding tool-length compensation, G43 and G 44 denote the tool-length in-crease and tool-length ... code G41 commands tool-radius compensation to the left of the tool movement direction, G42 commands tool-radius compensation to the right of the tool movement direction, and G40 commandscancelation ... the concept of Soft-NC isapplied. The CNC shown in Fig. 1.19 is designed based on the concept of modular-ization, standardization, and distributed processing and uses STEP-compatible part programs...
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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 ... the internalbehavior of the interpreter, it is necessary to understand the structure of a part pro-gram and the commands used therein.In a CNC system, various coordinate systems, such as the ... XPulse to YQ1=Q1+AFig. 3.7 Software DDA interpolatorment of the X-andY-axes, and the initial value of variables Q1 and Q2 is zero. InFig. 3.7b, the initial values of variables are the same as...
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Theory and Design of CNC Systems Part 6 pptx
... execution algo-rithms and implementation by pseudo-code. In this chapter, only the design of NCKwill be described and the overall design of the CNC system where the PLC and MMIunits are included ... toolpath in theworkpiece coordinate system (G00, G01, G02, G03, G40, G41, G42, G43, G 44, G49) considering the previous block and the successor block data. Therefore, theG/M-code interpreter ... reference on design of digital drive systems. Figure 5. 14 shows the architecture of a speed feedforward controller where the posi-tion command,αw,isfiltered and the filtered command is input...
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Theory and Design of CNC Systems Part 8 ppsx
... methods and themethod of designing a soft PLC system will be described together with design of Soft-NC in the later in this textbook. In Soft-NC, a PC is used as the hardware plat-form and all CNC ... Soft NC, Soft NC and Soft PLC can be regarded as the same system. Soft PLC which is made by a userinterface and the PLC kernel based on the IEC1131-3 can be regarded as partial systems of Soft-NC.Figure ... configuration and software of a Soft PLC, pleaseread other references about Soft-NC and Open CNC systems. 7.7 PLC Configuration ElementsIn this section, the configuration and execution structure of a...
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Theory and Design of CNC Systems Part 10 pot
... point of view. Furthermore, the design of the system kernel, which plays the role of booting up the CNC system, terminatingthe CNC system, communicating data and events to the tasks, and switching ... minimized and in whichthe number of tool changes is minimized, verifying tool paths and the finished part, and estimating machining time based on the minimum user input.320 9 CNC Architecture Design time ... Xi,∀i}where, i is the index of a point of the profile.In Fig. 8.24a, S[3] is a peak point and S[1] is a valley point. In Fig. 8.24b, S[5] isa peak point and S [4] is a valley point.In the sixth...
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