In this learning activity the student will define cutting speed and calculate the proper revolutions per minute for turning applications.
Lathe Cutting Speed and RPM Calculations
If two pieces of different diameters are operating at the same RPM, the larger diameter piece______.
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Correct!
If two pieces of different diameters are operating at the same RPM, the larger diameter piece______.
Correct Answer
has a greater surface speed
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Incorrect
If two pieces of different diameters are operating at the same RPM, the larger diameter piece______.
Your Answer
Correct Answer
has a greater surface speed
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Calculate the RPM for drilling a hole in a 6.0-inch diameter piece on a lathe with a 0.75-inch high-speed steel drill in 1095 steel. The cutting speed for 1095 steel is 40 SFPM.
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Correct!
Calculate the RPM for drilling a hole in a 6.0-inch diameter piece on a lathe with a 0.75-inch high-speed steel drill in 1095 steel. The cutting speed for 1095 steel is 40 SFPM.
Correct Answer
215 RPM
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Incorrect
Calculate the RPM for drilling a hole in a 6.0-inch diameter piece on a lathe with a 0.75-inch high-speed steel drill in 1095 steel. The cutting speed for 1095 steel is 40 SFPM.
Your Answer
Correct Answer
215 RPM
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Calculate the RPM for turning a 0.500-inch diameter piece of 4140 steel with a cutting speed of 60 SFPM using a high-speed steel turning tool.
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Correct!
Calculate the RPM for turning a 0.500-inch diameter piece of 4140 steel with a cutting speed of 60 SFPM using a high-speed steel turning tool.
Correct Answer
480 RPM
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Incorrect
Calculate the RPM for turning a 0.500-inch diameter piece of 4140 steel with a cutting speed of 60 SFPM using a high-speed steel turning tool.
Your Answer
Correct Answer
480 RPM
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Calculate the RPM for turning a 2.500-inch diameter bar of 1045 steel with a carbide turning tool. The cutting speed for carbide turning tools in 1045 steel is 500 SFPM.
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Correct!
Calculate the RPM for turning a 2.500-inch diameter bar of 1045 steel with a carbide turning tool. The cutting speed for carbide turning tools in 1045 steel is 500 SFPM.
Correct Answer
800 RPM
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Incorrect
Calculate the RPM for turning a 2.500-inch diameter bar of 1045 steel with a carbide turning tool. The cutting speed for carbide turning tools in 1045 steel is 500 SFPM.
Your Answer
Correct Answer
800 RPM
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Calculate the RPM for boring a 0.7500 hole in a 3-inch diameter piece of 4140 steel. The cutting speed for a carbide-boring tool in 4140 steel is 240 SFPM.
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Correct!
Calculate the RPM for boring a 0.7500 hole in a 3-inch diameter piece of 4140 steel. The cutting speed for a carbide-boring tool in 4140 steel is 240 SFPM.
Correct Answer
1280 RPM
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Incorrect
Calculate the RPM for boring a 0.7500 hole in a 3-inch diameter piece of 4140 steel. The cutting speed for a carbide-boring tool in 4140 steel is 240 SFPM.
Your Answer
Correct Answer
1280 RPM
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Calculate the RPM for turning a 4-inch piece of 1018 steel with a high-speed steel turning tool. The cutting speed for a high-speed steel tool in 1018 steel is 90 SFPM.
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Correct!
Calculate the RPM for turning a 4-inch piece of 1018 steel with a high-speed steel turning tool. The cutting speed for a high-speed steel tool in 1018 steel is 90 SFPM.
Correct Answer
90 RPM
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Incorrect
Calculate the RPM for turning a 4-inch piece of 1018 steel with a high-speed steel turning tool. The cutting speed for a high-speed steel tool in 1018 steel is 90 SFPM.
Your Answer
Correct Answer
90 RPM
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Calculate the RPM for rough turning a 4.00-inch diameter 1018 steel bar with a 55-degree carbide turning tool in 1018 steel. The cutting speed for a carbide turning tool in 1018 steel is 400 SFPM.
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Correct!
Calculate the RPM for rough turning a 4.00-inch diameter 1018 steel bar with a 55-degree carbide turning tool in 1018 steel. The cutting speed for a carbide turning tool in 1018 steel is 400 SFPM.
Correct Answer
400 RPM
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Incorrect
Calculate the RPM for rough turning a 4.00-inch diameter 1018 steel bar with a 55-degree carbide turning tool in 1018 steel. The cutting speed for a carbide turning tool in 1018 steel is 400 SFPM.
Your Answer
Correct Answer
400 RPM
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
The harder the workpiece material, ______.
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Correct!
The harder the workpiece material, ______.
Correct Answer
the slower the cutting speed
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Incorrect
The harder the workpiece material, ______.
Your Answer
Correct Answer
the slower the cutting speed
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Cutting speed is the surface speed ______.
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Correct!
Cutting speed is the surface speed ______.
Correct Answer
where the cutting takes place
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Incorrect
Cutting speed is the surface speed ______.
Your Answer
Correct Answer
where the cutting takes place
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Calculate the RPM for turning a 1.00-inch diameter piece of 52100 steel. The cutting speed for a high-speed steel turning tool in 52100 steel is 50 SFPM.
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Correct!
Calculate the RPM for turning a 1.00-inch diameter piece of 52100 steel. The cutting speed for a high-speed steel turning tool in 52100 steel is 50 SFPM.
Correct Answer
200 RPM
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
Incorrect
Calculate the RPM for turning a 1.00-inch diameter piece of 52100 steel. The cutting speed for a high-speed steel turning tool in 52100 steel is 50 SFPM.
Your Answer
Correct Answer
200 RPM
Question 1 of 10
Lathe Cutting Speed and RPM Calculations
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- 4/2/2015
- Last Updated
- 4/2/2015
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Lathe Cutting Speed and RPM Calculations by Fox Valley Technical College is licensed under a Creative Commons Attribution 3.0 Unported License.