Activity 3.4 Linear Dimensions
Introduction
If you were given the responsibility of going to a store and purchasing a throw rug that had to fit within a room in your home, how would you communicate the shape and size of the room to the salesperson?
Given the sketching skills that you’ve developed, you would probably sketch a top view of the room on a piece of paper. This would be useful, but a sketch alone only communicates shape information.
A shape has a size that must be communicated in order to make intelligent design decisions. Information about an object’s size must be conveyed using dimensions. In manufacturing, a part must be dimensioned fully and correctly and to the proper precision. Otherwise, the part may not function properly or may not fit into an assembly as intended. Dimensioning errors can lead to a delay in production time, increased design and manufacturing costs, and a potentially unsafe product.
In this activity, you will apply your knowledge of dimensioning to identify dimensioning errors and provide missing dimensions on multi-view drawings. You will also fully dimension multi-view sketches according to dimensioning guidelines.
If you were given the responsibility of going to a store and purchasing a throw rug that had to fit within a room in your home, how would you communicate the shape and size of the room to the salesperson?
Given the sketching skills that you’ve developed, you would probably sketch a top view of the room on a piece of paper. This would be useful, but a sketch alone only communicates shape information.
A shape has a size that must be communicated in order to make intelligent design decisions. Information about an object’s size must be conveyed using dimensions. In manufacturing, a part must be dimensioned fully and correctly and to the proper precision. Otherwise, the part may not function properly or may not fit into an assembly as intended. Dimensioning errors can lead to a delay in production time, increased design and manufacturing costs, and a potentially unsafe product.
In this activity, you will apply your knowledge of dimensioning to identify dimensioning errors and provide missing dimensions on multi-view drawings. You will also fully dimension multi-view sketches according to dimensioning guidelines.
Conclusion
1. Why is placement of your dimensions so important? The placement of dimensions is important for the fact that legibility is important when placing dimensions for your sketches.
2. Why do designers need to fully dimension a part? Designers need to fully dimension a part to provide the width, height, and depth so the person that is manufacturing the sketch doesn't dimension it wrong.
3. What does it mean when a sketch is over dimensioned? When a sketch is over dimensioned, it just simply has repeated dimensions on the sketch.
1. Why is placement of your dimensions so important? The placement of dimensions is important for the fact that legibility is important when placing dimensions for your sketches.
2. Why do designers need to fully dimension a part? Designers need to fully dimension a part to provide the width, height, and depth so the person that is manufacturing the sketch doesn't dimension it wrong.
3. What does it mean when a sketch is over dimensioned? When a sketch is over dimensioned, it just simply has repeated dimensions on the sketch.