Lab 6 Mold Making 2023
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Uploaded by MasterBarracuda1151
MFG 355
Lab 6
Eduardo Ibanez Vasquez
Lab 6 Report
Dr. Andy George
03/03/2023
Mold Making
Lab Write up Questions:
(Simple one sentence responses are adequate if you fully answer each part of the question)
1)
What are some design considerations that you must utilize for your CAD model if your
mold is being machined?
The design considerations for mold being machined are:
-
The material that the mold will be made of.
-
If the part is machinable.
-
The use of common radii on internal corners.
-
The cost of production.
-
An appropriate draft angle.
-
If the undercuts were removed.
2)
What is the difference between a positive and negative mold?
A positive mold has a convex shape, and it will have the inner surface with a better finish;
a negative mold has a concave cavity, and the best surface finish will be the outer surface.
3)
Where will the best surface be on the part made from a negative mold?
The outer surface will be the best surface for a negative mold.
4)
What are some advantages and disadvantages of a splash mold in comparison to a metal
CNC mold?
Metal CNC molds have a greater longevity than splash molds, metal molds also can get a
good surface finish and they can get better dimension details. On the other hand, one
disadvantage of metal molds is that they are significantly more expensive than splash
molds.
MFG 355
Lab 6
5)
What determines the quality of the surface finish on a completed composite part?
The surface finish you have on your mold will determine the surface finish on your
composite part.
Design problem:
Your boss wants to create a brand-new carbon fiber hood scoop for your production sports car.
This is a brand-new trim package for the vehicle, so this part has never been manufactured
before. All you have is a CAD model for this new design. Which mold making process do you
pursue if there will only be a handful of these cars, and what are the advantages of the process
you selected? What about for 100,000 units?
The splash mold and metal CNC mold making processes start with a CAD model. The splash
molds are great for a smaller number of cycles so this process will be appropriate for just a
handful of the cars, because it does not require a large initial investment in tooling or equipment
and can be used to produce high-quality carbon fiber parts with complex shapes.
However, if there will be a demand for 100,00 units, a more suitable mold making process would
be the metal CNC molding process. The metal CNC molds are advantageous for high-volume
production as it can produce parts at a faster rate and with greater consistency than other mold
making processes. These type of molds can produce parts with high precision and consistency
quality.
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