Comprehensive
CNC^{TM}
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 indepth 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.
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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 antivibration 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 stepbystep
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.
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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
stepbystep 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 indepth 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 stepbystep
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.
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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 stepbystep
approach to programming. The students complete all
the preprogramming 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 123 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.
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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.
Handson
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 Vflange holders.
Handson
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 cutoff saws and deburring techniques.
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