Engineering drawing and CAD 2 (2cr)

Evaluation scale

1-5

Objective

Upon completion of the course, students will be competent in:
- dimensioning an object to be designed and including the necessary standard symbols pertaining to surface roughness, tolerances, adapters, geometric tolerances and standard welding symbols, and making manufacturing drawings and assembly diagrams for machine parts using the symbols in question.
- using a three-dimensional, computer-aided environment to develop 3D CAD models of parts and assemblies and necessary design documents thereof.

Content

Use of surface roughness symbols, welding symbols, tolerances and fits, and the creation of part and assembly drawings with a 3D design system as part of a mechanical designer’s workflow.

Materials

- Hasari-Salonen: Teknillinen piirtäminen
- Pere: Koneenpiirustus
- Material provided during the lessons

Teaching methods

- Lectures
- Drafting exercises by CAD
- Assignments
- Indendent study
-Group exercise

Student workload

28h lectures, exercises
32h assignments, preparing to exam

Assessment criteria, satisfactory (1)

Recognizes the key machine drawing symbols but still requires guidance in interpreting them. Uses standard markings partly correctly, but the drawings contain errors or inconsistencies. Can produce a simple manufacturing drawing. In assembly drawings, the symbols and fits are mostly understandable, but not always compliant with standards. Can use a 3D design software at a basic level (simple models, basic assemblies). The models contain structural deficiencies or dimensional inaccuracies. Use of standard components or libraries is still uncertain. Technical documents can be produced, but they are not always in accordance with standards or the assignment.

Assessment criteria, good (3)

Recognizes and interprets standard markings fluently. Produces manufacturing and assembly drawings that are generally compliant with standards. Understands the purpose of fits and selects appropriate tolerances and fits for machine parts without significant errors. Geometric tolerances are most often applied logically and in a way that suits the manufacturing process. Can model functional and dimensionally accurate part and assembly models using the essential tools of the software. Uses the software’s libraries and standard components smoothly and correctly. Produces technical documents (drawings, exploded views, lists) that are mostly compliant with standards.

Assessment criteria, excellent (5)

Recognizes, interprets, and applies manufacturing symbols. Produces fully standard-compliant and clear manufacturing and assembly drawings. Is able to select fits and mark them accurately on the manufacturing drawing. Applies geometric tolerances in a way that supports both manufacturability and functionality. Models high-quality and production-ready 3D part and assembly models. The drawings are high quality, compliant with standards, and directly usable for manufacturing. Makes appropriate use of parameters and standard components where relevant. Assemblies are error-free, well organized, and include appropriate motion constraints/relations. The documentation demonstrates an understanding of manufacturing methods and design logic.

Qualifications

Engineering drawing and CAD 1