Topics of Instruction

Comprehensive CNCTM Curriculum:
Topics of Instruction

Our training program is divided into five levels. Our In House classes are a combination of the material listed below. 

For those companies purchasing the Comprehensive Program - topics are available individually, by level, or you can mix and match. Contact RTSI to discuss customized training sections.

All materials have been used in the RTSI training facility for over 15 years. All materials have been authored by RTSI instructors and staff. To see a list of chapters presented in each level, click on the title.

Comprehensive CNC: LEVEL ONE

Fundamental Machine Shop Concepts

1:1 Introduction to Machine Shop Math- Overview of math skills needed in a machine shop. This section contains basic math questions such as fractions, ratios and calculator use.

1:2 Calculation of Cutting Speeds (S.F.P.M.) - We consider the effects on tool life, and how to determine what speed to run at. This section also covers cutting speeds for various materials.

1:3 Introduction to CNC Machine Design- Looking at tool design for both Lathes and Mills we discuss machine design and application consideration.

1:4 Equations- Application of early skills learned in the Machine Shop Math section. This section takes practical math problems encountered in machining.

1:5 American National Standards Institute (A.N.S.I.) - We take an in-depth look at the ANSI Tooling classification method. Learn what the codes mean and how to interpret them.

1:6 Cartesian Coordinates- Using coordinates for location purposes using two or more axes; specifically how this system relates to machining.

1:7 Blue Print Reading- Understanding and reading blue prints for shop floor applications. We cover calculations of unknown measurements, the different views of a part, and datums.

1:8 Introduction to Geometric Tolerancing- Learning the geometric tolerancing symbols, and what they mean. This section also covers mating parts, and material condition.

1:9 Metric Conversions- This section defines the metric system and the valuable formulas used in the conversion process. We also examine specific machining considerations when converting to and from the metric system.

1:10 CNC Offsets- Examines offsets, what they are and how to adjust them. Included in this section is tool wear, geometry and work zero.

back to top

Comprehensive CNC: LEVEL TWO

Manufacturing Technology

2:1 High Speed Steel- Looking at drills, taps and reamers, we discuss programming considerations and calculating the spindle speed for certain applications. We discuss center drills, spot drills, twist drills, cobalt drills, and core drills.

2:2 Pythagorean Theorem- This is a math intensive section that teaches you to determine the unknown lengths of triangles. We discuss the rules of Pythagorean and practice performing equations. Included in this section is a number of machine shop specific equations to calculate.

2:3 Pythagorean Practice- Use of the Pythagorean Theorem to solve the practice problems.

2:4 Carbide Inserts- Covers the ANSI and ISO classification of inserts. We spend a good deal of time discussing the requirements for selecting a carbide insert. We talk about such variables as coatings of inserts, shape, clearance, cutting point and tolerance. In addition to carbide we discuss special tooling and special grooving inserts, as well as chip breaker styles and forces.

2:5 Milling Inserts- This chapter includes a mill tool chart.  We cover the various milling inserts and discuss the applications and use of milling inserts.

2:6 CNC Lathe Program Format- This section covers Fanuc, Mazatrol, Okuma, Giddings & Lewis and Allen Bradley Controls. Included in this section is a discussion of G and M codes in addition to work zero location, tool setting, and offsets. This section also includes step by step instructions of programming a part on a CNC mill.

2:7 CNC Mill Program Format- G & M codes for Fanuc mills.  Coding for canned cycles, peck drilling and cutter compensation.

2:8 Boring Bars- Looks at bar setting, extension considerations, steel and heavy metal bars, carbide and anti-vibration bars, minimum bore considerations, and causes of chatter.

2:9 Insert Drills-  Explores the strength of insert drills, drill depths, chip clearance and operating conditions required for these types of drills.

2:10 Introduction to Trig- This section introduces the basic concepts of trigonometry and the study of triangles. It discusses the parts of an angle and the rules to guide calculations using the sine, cosine and tangent rules.

2:11 End Mills- This section discusses various types of end mill applications.  We review the calculation of speeds and feeds and discuss machining considerations when using end mills.  A speed and feed chart are included for your reference.

2:12 Lathe Project #1-  We cover selecting tools, then selecting speeds, feeds and DOC.  You will see how to calculate the tool path and we go over the writing of G & M codes.

2:13 Mill Project #2- This section we go over the method of calculating part and geometry and writing G & M codes.

2:14 Pythagorean Project #1- This section shows you the step-by-step calculation of dimensions of partial arcs.

2:15 Lathe Project #3- In this section we go over, Problem #1: finding part dimensions,  Problem #2: finding part dimensions, and Problem #3: calculating part geometry.

2:16 Drill and Tap Mill Project- We look at how to calculate speed and feed rates, depth for a spot drill, depth of a twist drill and depth of a tap.

back to top

Comprehensive CNC: LEVEL THREE

Lathe Programming

3:1 Lathe Project- Rough & finish turning, grooving- The first project this class covers is a basic turned part.  The students review the part print and calculate part geometry.  A program is then written to rough turn, finish turn, and then put a groove on the part.

3:2 Trigonometry- The subject of trigonometry was first introduced in Level Two- Manufacturing Technologies.  Here, trigonometry is covered in greater depth.  Three basic rules of sine, cosine, and tangent are explained, as well as the "know and  needed" rule.

3:3 Trig Practice- 1,2,3 & 4. In these practice chapters, students use trig rules to evaluate engineering prints and problems.  These problems include bolt patterns, drill angles, tapers, hex patterns, and part angles.

3:4  Lathe Workholding- In this chapter the student learns about the variety of workholding methods used on lathes. These methods include a variety of chuck types and the safety considerations of these items.

3:5 Circular Interpolation: Turning - Circular interpolation is the creation of arcs on the part.  To program these forms, one must first recognize concave and convex arcs and then understand the program codes required.  This chapter takes students step-by-step through the complex procedure of programming internal, external, concave, and convex arcs.

3:6 Circular Interpolation: Grooving- The circular interpolation programming process is also used to create groove features in a part. This chapter allows students to program a groove including concave and convex radii.

3:7 Lathe Project: circular interpolation- This is an in-depth exercise for students to use their circular interpolation programming skills.  The students must review the print and completely program the part.

3:8 Canned Cycles- Canned cycles can greatly ease the programming process for certain types of parts.  This chapter reviews the purpose of canned cycles and allows students to complete exercises using this programming procedure.

3:9 Lathe Threading- Threads are an important feature on turned parts.  This chapter reviews characteristics of threads and various thread production methods.  Thread programming is then addressed as students complete programming exercises.

3:10 Lathe Threading Canned Cycles- This chapter combines the concepts for thread production and canned cycles.  This programming process can ease the repetitive aspects of thread programming.

3:11 Lathe Cutter Compensation- When programming angles, the size of the tool's nose radius must be considered. This chapter reviews the manual programming method of compensating for the size of the TNR. First, the student reviews calculation of angle sizes. Once the angle size is known, it is used to calculate the compensation amount.  These values are used in the program to endure the correct angles and chamfers are produced on the part.

3:12 Trig Practice 5- This trigonometry practice chapter provides a step-by-step process to calculate the points and angles required to program arcs and angles on turned parts.

3:13 Lathe Project: Cutter Compensation- The project gives students a chance to practice the cutter compensation programming method shown in chapter 3:11.  The student reviews the print and then programs it using cutter compensation.

3:14 G41/G42 Lathe Cutter Compensation- This chapter reviews cutter compensation using the codes G41 and G42. This is an alternate programming method for creating angles.  This method uses the program codes to automatically compensate to the size of the insert.

Additional lathe programming projects are provided to give students more practice in the concepts covered in this book.

back to top

Comprehensive CNC: LEVEL FOUR

Mill Programming

4:1 Milling Technology- This chapter is a review of the tooling used on milling machines. In addition to a review of tooling types, the student is given a review of calculation methods for speeds and feeds. This is a "warm up" for milling programming.

4:2 Mill Program Planning- There are a number of steps to complete before programming can be started.  This chapter takes a step-by-step approach to programming.  The students complete all the pre-programming steps of reviewing the part, planning the machine process and calculating speeds and feeds.

4:3 Mill Program Review- This series of exercises allows students to review the print and calculate the part geometry. Detailed review of the part program is completed with questions that force the student to review the program and understand the machining process.

4:4 Trigonometry- The subject of trigonometry was first introduced in level two- CNC Technologies. Here trigonometry is covered in greater depth. The three basic rules of sine, cosine and tangent are explained, as well as the "known and needed" rule.

4:5 Trig Practice- 1,2,3 & 4. In these practice chapters, students use trig rules to evaluate engineering prints and problems.  These problems include bolt patterns, drill angles, tapers, hex patterns, and part angles.

4:6 Mill Fixturing- Workholding in a milling environment allows many options for the machinist. This chapter reviews fixturing methods including the 1-2-3 concept, fixture jacks, fixture keys, chains, modular fixtures, vises, Ball Lock and location parts.

4:7 Circular Interpolation- Circular interpolation is the process of creating a circle or arc in a part. This chapter covers the programming of that process. The required program codes are compared, the R code method and the I, J & K method. The students learn programming skills for convex, concave, internal and external shapes on milled parts.

4:8 Mill Project: OD circle milling- Using the programming concepts learned in chapter 4:7, students complete detailed exercises in programming outside diameter arcs and circular shapes.

4:9 Mill Project: ID circle milling- Similar to project 4:8, these exercises allow students to practice their programming skills. The prints contain internal arcs and circular shapes.

4:10 Thread Milling- Threads are an important feature on many, many parts. This chapter reviews characteristics of threads and various thread production methods.  Thread programming is than addressed as students complete programming exercises.

4:11 Methods of Milling Cutter Compensation- This section goes over the methods of cutter compensation, CAM methods and defining part geometry.  We have a programming project example and we learn programming angle compensation.

4:12 Mill Project: cutter compensation- This chapter allows students to practice the programming skills associated with cutter compensation.  The project includes calculating the part geometry and programming a part shape.

Additional mill programming projects are provided to give students more practice in the concepts covered in this book.

back to top

Comprehensive CNC: Level Five

Machine Operator Skill Development

Metrology: Use of measuring equipment, micrometers, pin gauges, thread gauges, height stand, optical comparator, surface finish and sine bar.

Manual Lathe: Use and understanding of enine lathe. Use of collets, boring chuck jaws, use of dog drivers and setting a (4) jaw chuck.

Theory of Manual Milling: Aligning head square to table, use of vices, use of edge finders, locating the datum.

Lathe Machine Concepts: A discussion of machining operations available on lathes and the tools used in those operations.  Also includes a review of barfeed and chucking machines and the calculation of stock allowance.

Hands-on Lathe Project: This workbook chapter, designed to familiarize the student with the following lathe concepts: axes, control types, setting tools and adjusting offset files.

Mill Tool Holders: A review of the variety of tool holders used on a milling machine. Discusses the tool holding methods for end mills, face mills, drills, taps and reamers.  This chapter also covers proper use of V-flange holders.

Hands-on Mill Project: Another workbook chapter in which the student answers questions about machine design, axes, control variables, edgefinders and offset variables.

Blueprint Reading Practice: This chapter provides students with practice in reading simple blueprints of fitted parts.

Plus surface grinding theory & practice, use of cut-off saws and deburring techniques.

back to top



2000 RTSI All rights reserved.