5.13 Chapter Conclusion
D.M. Donner
Summary
Benchwork skills allow a machinist to perform quality repair and fabrication operations with the use of simple tools. With refined technique, benchwork skills can be used to create prototype parts that have not been evaluated enough to warrant costly CNC machine space. Good benchwork skills are also necessary to perform repair work on equipment to return it to a safe state of operation.
A quality bench grinder makes our jobs easier by shaping and sharpening the tooling we are using, such as drill bits and punches. A solid understanding of bench grindering will aid you in a successful machining operation.
It is wise to learn the techniques necessary to become a well-rounded machinist. Incorporating benchwork practices into your skill set is worth the time and effort.
Review Questions
- List safety concerns when performing offhand grinding.
- Explain the purpose of a saw blade kerf.
- Describe steps to replace a grinding wheel
- Explain the 3X rule as it applies to saw blades.
- Calculate the tap drill for a 75% engagement ⅝-11 UNC 2B thread.
- What material can be used on a bench grinder?
- List some of the shapes of hand files?
- What type of operations can you perform with hand files?
- List the tools used to scribe straight lines on stock.
- Name the tools used to scribe curved lines on stock.
- Define TPI.
- Explain the function of a flute on a tap.
- What is a tap drill?
- List, in order, the processes for using a threading die.
- List, in order, the steps to create threads with a die.