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Worksheets7.1 Basic Blueprint Reading - Lathe
Total questions: 14
Worksheet time: 7mins
Blueprints are commonly referred to as drawings. The blueprints or drawings are the method engineers use to tell a machinist how to make a part, what is critical about the part, the material you need to make the part from, and more.
True
False
The common format for a part drawing divides the drawing into zones. These zones are:
Quadrants, one in each corner
Letters (A through Z) on the bottom axis, and numbers (1-10) on the side axis
Left side and right side zones
Top and bottom zones
The drawing Title Block – which lists the Company Name, the Drawing or Part Number, the Revision Level, the Tolerance Callouts, and more – is typically located in _______ of the drawing.
The upper left corner
The lower left corner
The upper right corner
The lower right corner
On the face of the drawing, there is a specific section for NOTES. Where on the drawing are the NOTES typically located?
Upper right corner
Lower left corner
Upper left corner
Lower right corner
A very important element of the drawing is the Revision History Block on the face of the drawing. The location of the Revision History Block on drawings is the:
Top left corner
Top right corner
Bottom right corner
Bottom left corner
It is not important for the machine operator to identify the revision level on the drawing and match that revision level to the program in the CNC machine.
True
False
Engineering drawings offer two ways to display views of a part. Those two views are:
First angle projection and second angle projection
Third angle projection and first angle projection
Top view and bottom view
None of the above
Section Views on a drawing are displayed by a dashed line across the surface of any view of the part on the drawing. This Section View will give the operator the view of the internal details of features within the body of the part.
True
False
There may be several detailed views on a drawing. Each detailed view will be listed with a separate letter, such as Detail A, Detail B, etc.
True
False
There are many numbers listed on the face of a drawing. Each number that you see on a drawing is called a dimension.
True
False
The leader lines signify the location of the feature based on a starting point (such as a fixed edge of the part) or the actual endpoint of the feature (such as the center of a hole in the part).
True
False
In the case of a drawing callout for a hole feature, you may see a 2X or a 4X. The number and X simply note:
To magnify the hole by that number
The number will be listed elsewhere on the drawing
How many times on the drawing that identical feature exists
To change the spindle speed by that factor to create this feature
A tolerance on a drawing tells the machinist the amount and the direction by which a feature can deviate from a dimension on a drawing.
True
False
Each dimension on a drawing will have a varying number of digits to the right of the decimal point. Generally speaking, the number of digits to the right of the decimal point tells the machinist how critical that dimension is.
True
False
