| Credit- Degree applicable | | Effective Quarter: Fall 2018 | I. Catalog Information
| DMT 87F | CAD/CAM Based CNC Surface Contouring Programming Using Mastercam | 5 Unit(s) | | DMT 87G | | 5 Unit(s) | | DMT 87H | | 5 Unit(s) | | DMT 87J | | 5 Unit(s) | | DMT 87K | | 5 Unit(s) |
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| | (DMT 87J was formerly MCNC 76J.) Prerequisite: Any DMT 87A-E course. Lec Hrs: 36.00
Lab Hrs: 72.00
Out of Class Hrs: 72.00
Total Student Learning Hrs: 180.00 CAD/CAM programming for continuous 3-axis contouring on machining centers using wireframe, splines, surface and solid modeling. Rough, finish and high speed machining. Editing, post-processing and verification of completed programs. |
| Student Learning Outcome Statements (SLO)
| | | Construct advanced surface geometry using Mastercam. |
| | | Produce tool paths from advanced surface geometry to create word address programs. |
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II. Course Objectives | A. | Construct advanced wireframes. |
| B. | Create parts using advanced surface modeling. |
| C. | Generate continuous 3-axis cutting tool paths using roughing, finishing and high speed functions. |
| D. | Analyze and edit continuous 3-axis tool paths. |
| E. | Select cutting tools and plan programming sequences. |
| F. | Construct parts using advanced solid modeling. |
III. Essential Student Materials IV. Essential College Facilities | | A laboratory/classroom equipped with Mastercam software, CNC milling machines, and related accessories. |
V. Expanded Description: Content and Form | A. | Construct advanced wireframes. |
| 1. | Construct tangent vectors relative to a surface edge or point on a surface. |
| 2. | Create and manipulate 2D and 3D splines. |
| 3. | Utilize the use of multiple construction planes. |
| 4. | Define custom construction planes. |
| B. | Create parts using advanced surface modeling. |
| 1. | Explain surfaces and their applications. |
| 2. | Develop surfaces using surface mathematics. |
| 3. | Identify surface types and uses. |
| 4. | Construct surfaces using the surface modules. |
| a. | Procedures and shortcuts in creating parts using surfaces. |
| b. | Loft, net, ruled, sweep, revolved. |
| 5. | Use existing surfaces to create new surfaces. |
| 6. | Create composite surface models. |
| C. | Generate continuous 3-axis cutting tool paths using roughing, finishing and high speed functions. |
| 1. | Explain various methods of generating tool paths to cut surfaces. |
| 2. | Use modules to develop tool paths from wireframe models. |
| 3. | Apply 3D tool path modules. |
| a. | Features of twelve surface roughing functions. |
| b. | Features of eight surface finishing functions. |
| c. | Common parameters used in surfacing tool path functions. |
| d. | High speed tool path functions. |
| 1. | Identify the CNC machine, tooling, software and machining strategies and relationships. |
| 2. | Use high speed tool path roughing and finish functions and set parameters. |
| 4. | Perform post processing functions. |
| a. | Post files and interpretation. |
| b. | Universal post editing. |
| D. | Analyze and edit continuous 3-axis tool paths. |
| 1. | Examine toolpath using backplot. |
| 2. | Evaluate toolpath using verify. |
| 3. | Perform edits to toolpath parameters. |
| 4. | Execute NC file amendments using editor software. |
| E. | Select cutting tools and plan programming sequences. |
| 1. | Execute tool path generation procedures for 3D surfaces. |
| 2. | Plan for most productive sequence for machining features and surfaces. |
| 3. | Select proper tooling and machining parameters. |
| F. | Construct parts using advanced solid modeling. |
| 1. | Perform wireframe transfer for development. |
| 2. | Perform modeling commands. |
| f. | Boolean add, remove,common |
VI. Assignments | A. | Construct continuous 3-axis surface contouring programs for CNC mills based on lecture and lab demonstrations. |
| B. | Take home worksheets involving calculations. |
| C. | Reading from textbooks and references. |
| D. | Complete projects which incorporate the modeling and machining techniques learned. Construct projects based on video content. |
VII. Methods of Instruction | | Lecture and visual aids
Homework and extended projects
Computer laboratory experience involving students in formal exercises
Observation of sample projects machined by the instructor |
VIII. Methods of Evaluating Objectives | A. | Examinations covering lecture material, in class programming exercises and lab demonstrations related to CNC 3 axis machining centers. Exams will be evaluated for tool path efficiency, cycle times and machinability. |
| B. | Evaluation of take home worksheets for correctness and completeness. |
| C. | Completion and correct use of importing files and optimization of 3-axis contouring tool paths in programming exercises. |
| D. | Final exam which requires students to analyze and apply the modeling and machining techniques examined throughout the course. |
IX. Texts and Supporting References | A. | Examples of Primary Texts and References |
| 1. | CamInstructor Inc., "Mastercam Mill 3D," Ontario, Canada: CamInstructor Inc.,2017 |
| B. | Examples of Supporting Texts and References |
| 1. | In House Solutions Inc.,"Mastercam Mill Advanced Training Tutorial," Ontario, Canada: In House Solutions Inc., 2017 |
| 2. | In House Solutions Inc.,"Mastercam Solids Training Tutorial," Ontario, Canada: In House Solutions Inc., 2017 |
X. Lab Topics | B. | Advanced surface modeling |
| C. | Continuous 3-axis tool paths |
| F. | Advanced solid modeling |
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