DFAB 202 Subtractive Manufacturing II advances students’ training in CNC manufacturing, building on the knowledge gained in DFAB 108 with a deeper focus on complex wood CNC multipart joinery, multiple tool paths, jigging, and fixturing. Students are introduced to sheet metal design in CAD, waterjet cutting, forming and bending techniques. This course explores design considerations, design constraints, safe machine operation, and tool selection for subtractive manufacturing.
Prerequisites: DFAB 108 with a minimum of 60%
Accessibility Services Notice
Students who would like an academic accommodation and who have a documented disability should contact Accessibility Services, if they have not already done so.Course Details| Total number of weeks | 15 |
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| Total Credits | |
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| Total Hours | 90 |
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Typical hours per week breakdown| Lecture | 3 |
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| Lab (lab, field, computer) | 3 |
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Learning Outcomes
Upon successful completion of this course, the learner will be able to:
- Describe, design and incorporate the various constraints, ergonomics, methods and applications for multi-axis subtractive manufacturing
- Operate various subtractive CNC machines
- Process complex CAD models for multi-axis subtractive manufacturing
- Incorporate design considerations and constraints into sheet metal part design
- Fabricate a sheet metal assembly by safely operating sheet metal bending/forming machines
Teaching and Learning Approach
A combination of theory-based lecture and context-based demonstration, with regular opportunity for hands-on
participation.Learning Resources
NoneDetailed Course Content, Topics, and Sequence Covered
1. Jigging, fixturing, dimensioning and tolerancing, clearances, interlocking assemblies, safe operation of the CNC, material optimization, ergonomics, fit and finish.
2. Physical Ergonomics, identifying a user need, generate a design brief, constructing a complex assembly with milled parts for the CNC machine, machine setup and calibration, alignment, tool selection, feeds and speeds, smoothing and finishing
3. Design considerations and constraints for 2D bent metal parts, flat packing, efficient use of materials, safe operation of waterjet and bending/forming machinesAssessment
| Title | Learning Outcomes | Value |
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| Assignment 1 â€" Ergonomics design | for self 1, 2, 3 | 25% |
| Assignment 2 - CNC Furniture | 1, 2, 3 | 50% |
| Assignment 4 â€" Waterjet | 4, 5, 6 | 25% |
| Total | 100% |
Grading Table
Standard Academic and Career Programs Grading Table
| Percentage |
Letter Grade |
GPA |
| 90-100 |
A+ |
4.33 |
| 85-89 |
A |
4.00 |
| 80-84 |
A- |
3.67 |
| 76-79 |
B+ |
3.33 |
| 72-75 |
B |
3.00 |
| 68-71 |
B- |
2.67 |
| 64-67 |
C+ |
2.33 |
| 60-63 |
C |
2.00 |
| 55-59 |
C- |
1.67 |
| 50-54 |
P |
1.00 |
| 0-49 |
F |
0.00 |
| |
DNW |
0.00 |
See the Academic Calendar for General Information including how to withdraw from course(s) and other regulations.
Disclaimer
Information contained in this course outline is correct at the time of publication. Content of the course is revised on an ongoing basis to ensure relevance to changing educational, employment and market needs. The instructor will endeavor to provide notice of changes to students as soon as possible. The instructor reserves the right to add or delete material from courses.