More Dimensioning
This project was aimed primarily at helping students utilize the different types of dimensioning styles. Having the ability to use these types of dimensions is very important when you wish to convey exactly what the output should be, with no errors. The purpose of a dimensioned drawing is to convey accurately to a manufacturer what the specifications of your part are. If there are any confusions on the part of the manufacturer because of missing elements of the drawing (of which dimensions comprise a lot of), the manufactured piece may not be made to the creator's specifications. To avoid these possible mishaps in the manufactured parts, it is important to utilize specific types of dimensions to effectively communicate the desired elements/features of the part.
The above pictures are dimensioned drawings that were created to the specifications of Activity 7.1 - More Dimensioning.
Conclusion Questions
1. Why is it important to have your drawing dimensioned completely?
It is important to have a drawing completely dimensioned because this allows the part to be recorded with few, if any, questions about the part in relation to its construction.
2. What is the difference between size dimensions and location dimensions?
Size dimensions are meant to show the size of the object, while location dimensions show the location of the depicted object in relation to other objects.
3. What is the difference between chain dimensioning and datum dimensioning? Which method generally results in smaller dimensional deviation in manufactured parts?
Chain dimensioning is when size dimensions of each object are listed such that the dimensions are lined up next to each other. Datum dimensioning is dimensioning in reference to a single point (datum = one piece of information). Datum dimensioning generally results in smaller dimensional deviation in manufactured parts because datum dimensions give a frame of reference of the manufactured part, so that the manufacturer can tell how each dimension fits into the overall part. (The part is easier to envision.)
4. What are the similarities and differences between communicating about an object or product part through a dimensioned drawing and through a written description?
The similarity between the 2 communication methods is that specific lengths of parts are specified. The differences between the 2 methods of communication are that the dimensioned drawing is much more specific, concise, clear, and less confusing than the word description, especially for larger, more complex objects.
It is important to have a drawing completely dimensioned because this allows the part to be recorded with few, if any, questions about the part in relation to its construction.
2. What is the difference between size dimensions and location dimensions?
Size dimensions are meant to show the size of the object, while location dimensions show the location of the depicted object in relation to other objects.
3. What is the difference between chain dimensioning and datum dimensioning? Which method generally results in smaller dimensional deviation in manufactured parts?
Chain dimensioning is when size dimensions of each object are listed such that the dimensions are lined up next to each other. Datum dimensioning is dimensioning in reference to a single point (datum = one piece of information). Datum dimensioning generally results in smaller dimensional deviation in manufactured parts because datum dimensions give a frame of reference of the manufactured part, so that the manufacturer can tell how each dimension fits into the overall part. (The part is easier to envision.)
4. What are the similarities and differences between communicating about an object or product part through a dimensioned drawing and through a written description?
The similarity between the 2 communication methods is that specific lengths of parts are specified. The differences between the 2 methods of communication are that the dimensioned drawing is much more specific, concise, clear, and less confusing than the word description, especially for larger, more complex objects.