introduction and literature survey
DESCRIPTION
Introduction and literature survey. 1.1- Introduction 1.2. Computer aided design (CAD) 1.3. Computer aided manufacturing (CAM ) 1.3.1-Advantages and disadvantages of CAD and CAM 1.4. Process planning. 1.3.1-Computer-Aided Process Planning 1.3.1.1 Variant Approach. - PowerPoint PPT PresentationTRANSCRIPT
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Introduction and literature survey
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1.1- Introduction1.2. Computer aided design (CAD)1.3. Computer aided manufacturing (CAM) 1.3.1-Advantages and disadvantages of CAD and CAM1.4. Process planning
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1.3.1-Computer-Aided Process Planning 1.3.1.1 Variant Approach
1.3.1.2. Generative Approach
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1.5. Computer numerical control (CNC) 1.5.1 . Advantages of Computer Numerical Control 1.5.2.Dis advantages of Computer Numerical Control 1.6. Part programming 1.6.1 Manual part programming 1.6.2- Computer aided part programming
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1.7. Structure previous work1.7.1. Milling 1.7.2. Turning 1.8. Scope of work
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TURNING
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External Contour provide Linear
Internal Contour provide Linear
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External Contour provide Linear or Circular interpolation
Internal Contour provide Linear or Circular interpolation
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Threading Contour
Key Way Feature
MILLTURN
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1. RADIAL HOLES FEATURE (WITH DEPTH )
2. RADIAL HOLES FEATURE (HOLO DEPTH )
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We will take the following Part as example to Show how software is work
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External Contour provide Linear or Circular interpolation & External Recess(Black continues line)
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Internal Contour provide Linear or Circular interpolation & Internal Recess(Red – Dashed Lines)
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Threading Contour provide External or Internal Contour(Blue– Dashed Lines)
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MILLTURN
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Reasons for using Mill Turn machines
1. Combination between milling and turning operations.
2. Reduce manufacturing time. 3. Reduce the misalignment in
manufacturing 4. Reduce cost
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• Keyway• Radial holes• Axial holes
Operation can made by mill turn
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Features added in feature recognition module
1. RADIAL HOLES FEATURE
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2.KEYWAY FEATURE
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• Radial hole part program:
N130 T1212 (Radial mill @5);N135 M52;N140 G96 S50G95 F0.055 M13;N145 C0N150 G0 X41 Z-32.5;N155 G1 X16;N160 G0 X41;N165 C72N170 G1 X16;N175 C144N180 G1 X16;N185 C216N190 G1 X16;N195 C288N200 G1 X16;
Fanuc21
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T12 D12 M6 ;Radial mill @5 M52 G96 S85 G95 F0.09 M13 C0 R11=0 R22=2 R24= 2 R25=2 R26= 28 R27=0 R28=1000 L98 P1 C72 R11=0 R22=2 R24= 2 R25=2 R26= 28 R27=0 R28=1000 L98 P1 C144 R11=0 R22=2 R24= 2 R25=2 R26= 28 R27=0 R28=1000 L98 P1
Sinumerik 810
C216 R11=0 R22=2 R24= 2 R25=2 R26= 28 R27=0 R28=1000 L98 P1 C288 R11=0 R22=2 R24= 2 R25=2 R26= 28 R27=0 R28=1000 L98 P1
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Sinumerik 840
T12 D12 M6 ;Radial mill @5 M52 G96 S0 G95 F0 M13 G96 S0G95 F0 M13 C0 CYCLE83(5,0,2,16,0,-5,0,2,0,0,1,0) C72 CYCLE83(5,0,2,16,0,-5,0,2,0,0,1,0) C144 CYCLE83(5,0,2,16,0,-5,0,2,0,0,1,0) C216 CYCLE83(5,0,2,16,0,-5,0,2,0,0,1,0) C288 CYCLE83(5,0,2,16,0,-5,0,2,0,0,1,0) C360 CYCLE83(5,0,2,16,0,-5,0,2,0,0,1,0)
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• KEYWAY PART PROGRAM
Fanuc21
N130 T1212 (Radial mill @6);N135 M52;N140 G96 S50G95 F0.055 M13;N145 C0N150 G0 X21 Z-25;N155 G1 X14;N160 G1 Z-35;N165 G0 X21;N165 C120N170 G0 X21 Z-25;N175 G1 X14;N180 G1 Z-35;N185 G0 X21;N185 C240N190 G0 X21 Z-25;N195 G1 X14;N200 G1 Z-35;N205 G0 X21;
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FUTURE WORK
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Turning
a) Calculation of Machining time.b) Identifying surface finishing allowance on inclined surfaces.c) Allow the software to deal with more controllers
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Mill Turn
Cad
a) Identifying the rest of mill turn features.b) Introducing more controllers.
a) 3D Draftingb) Simulation for manufacturing process
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PART PROGRAMMING
Manual part programming
1-Production of part programs directly in part program codes. 2-specialist skills and knowledge are required by the part
programmer.
Computer aided part programming
1-to enable a computer to generate the part program code required to finish-machine the component.
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Part programming
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Part ProgrammingGenerate the part program for Fanuc 21 controller for different advanced cycles
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Part programming
Generate the part program for Fanuc 21 controller
Generate some of features of the part program for sinumerik 810 controller Adding operations parameters “feed &
speeds “ data base according to material type and operation type.
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Part ProgrammingThreading
Perform calculations• We does our calculation to get thread parameter in
general case then we take the variable we needDmin= Dmax -2PP = 0.6134*pitch
Where:
P … depth of teeth.Dmin … Minimum Diameter.Dmax … Maximum Diameter.
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Where: Q First … First Roughing Depth.Hr ... Roughing Full Depth. Ht ... Total Depth (0.613 × pitch).Hf ... Finish Allowance / Finish Offset.am ... min depth of cut (0.06 – 0.08)mm.
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Where: n … Number of Bathes
• we use these parameter in fanuc21 ,sin810 .
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Print out the part programming code
G78 X... Z... Q... P... F... R0
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CASE STUDY
External Thread:G78 P020060 Q60 R0.04G78 X20.052 Z-16 Q0.311 P974 R0 F1.5
Internal Thread:G78 P020060 Q60 R0.04G78 X8.7 Z-25 Q0.256 P650 R0 F1
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External & Internal Thread:For Fanuc :
For External Thread
G78 P020060 Q60 R0.04G78 X20.052 Z-16 Q0.311
P974 R0 F1.5
For Internal Thread
G78 P020060 Q60 R0.04G78 X8.7 Z-25 Q0.256 P650
R0 F1
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Part ProgrammingPart programming consists of planning and documenting the sequence of processing steps to be performed on an CNC machine.Part program is classified in two categories: 1- Manual part programmingThe term manual part programming refers to the
production of part programs directly in part program codes.
2- Computer Aided Part ProgrammingThe concept of computer-aided part programming is to
enable a computer to generate the part program code required to finish-machine the component.
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Part Programming Sequence
Parameters form feature recognition
moduleMachine selection
Machining Sequence1. Facing
2. External operations3. Drilling
4. Internal operations
- Tool selection- cutting parameters
selectionCNC part program
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Case Study (Fanuc21M)
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Mirror&Threaded holes
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Case Study (Fanuc21T)
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Results and Conclusion
1-The project•Idea of project•Aim•Advantages
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2- Product design considerations3-the steps of a simulation study
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3.1-Problem formulation3.2-Setting of objectives and overall project plan3.3-Model conceptualization3.4-Data collection3.5-Model translation3.6-Verification3.7-Validation3.8-Experimental design3.9-Production runs and analysis3.10-Repeatition3.11-Document and report
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4-The relation between project and manufacturing in Egypt4.1-problems of industry in Egypt4.2-solutions of problem of industry in Egypt