Lathe Tool Geometry
Lathe Tool Geometry provides a description of single-point lathe tool angles, detailing the effect these angles have on a cutting operation. Tool angles have a significant impact on a cutting operation, as each angle offers a tradeoff between cutting-edge strength and improved tool service life, among other factors. Cutting tool angles must be optimized to each unique combination of workpiece material, tool material, cutting application, and desired surface finish quality. Improper tool geometry leads to premature tool wear and failure, poor surface finish, and slower speed and feed rates. These factors increase manufacturing costs, create excess waste and scrapped parts, and slow production rates. After taking this course, users will be able to better identify and implement proper tool geometry for lathe cutting processes to improve production efficiency and maximize tool service life.
The training session will begin with a pretest to establish baseline understanding and prepare the learner for what to expect in the training material that follows. This module includes 21 lessons:
- The Importance of Tool Geometry
- Lathe Basics
- Workpiece Material
- Tool and Workpiece Materials
- Single-Point Basics Review
- Back and Side Rake Angles
- Recommended Rake Angles
- Adjusting Back and Side Rake Angles
- Rake Angle Review
- End and Side Relief Angles
- Recommended Relief Angles
- Adjusting Relief Angles
- Relief Angles Review
- End and Side Cutting Edge Angles
- Recommended Cutting Edge Angles
- Adjusting Cutting Edge Angles
- Cutting Edge Angle Review
- Nose Radius
- Classifying and Selecting Tool Geometries
- Tool Geometry for Specific Cutting Operations
- Final Review
By the end of this course, learners should be able to:
- Describe tool geometry
- Describe the features of a single-point tool. Describe the basic considerations of a lathe operation
- Describe how workpiece material affects a cutting operation
- Describe the various tool materials used in lathe machining operations
- Describe back and side rake angles
- Explain the effects of positive and negative rake angles
- Describe what the end and side relief angles measure in single-point tooling
- Describe the effects of adjusting relief angles
- Describe what the end and side cutting edge angles measure in single-point tooling
- Describe the effects of the cutting edge angles
- Describe the appearance and function of the nose radius
- Describe tool signatures and insert numbers
- Describe how different cutting operations require different tool geometries