CNC Control Setup for Milling and Turning:. Peter Smid
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USING EDGE FINDERS
Magnetic Single Edge Finder
Magnetic Center Finder
DISTANCE-TO-GO
SHAFT TYPE EDGE FINDERS
Prerequisites
Individual Steps
Work Offset Calculations
Original Example Revisited
WORK OFFSET Z-SETTING
Where is the Z-setting?
Setting the Z-axis
MULTIPLE WORK OFFSETS
Program Entry
WORK OFFSET ADJUSTMENTS
Mixing Units of Measurement
Height of Part
EXT WORK OFFSET
EXT or COM ?
Offset Adjustment Options
WORK OFFSETS - DATA INPUT
Data Change Example
Chapter 10
TOOL LENGTH OFFSET
TOOL LENGTH
Tool Length Offset Register
TOOL LENGTH OFFSET COMMANDS
Limitations of Work Offsets
G43 and G44 Commands
Applying Tool Length Offset
G49 Command
OFFSET MEMORY TYPE
Offset Memory - Type A
Offset Memory - Type B
Offset Memory - Type C
INPUT and +INPUT Key Selection
Adjustment Examples
MACHINE GEOMETRY
SETTING THE TOOL LENGTH
Tool Assembly Fixture
Preset Tool Method
Touch-Off Method
Reference Tool Method
EXT OFFSET AND WORK OFFSET
WORK AND TOOL LENGTH OFFSET
Chapter 11
MACHINING A PART
MACHINING OBJECTIVES
PROCESS OF MACHINING
DRAWING EVALUATION
Tolerances
Radius from I and J
Surface Finish
Stock Allowance
MATERIAL INSPECTION
PROGRAM EVALUATION
Programs Generated Manually
Programs Generated by Software
Part Setup and Tooling
PROGRAM INPUT
Memory Mode
DNC Mode
PROGRAM VERIFICATION
Manual Verification
Software Verification
PRODUCTION MACHINING
Responsibilities
PART INSPECTION
PROGRAM SOURCES
CAM Programs and Machining
Conversational and Macro Programming
PREVENTING A SCRAP
Causes of Scrap
Steps to Eliminate Scrap
Let Offsets Work for You
Offset Adjustment - Example
PROGRAM MODIFICATION
MAINTAINING SURFACE FINISH
Surface Finish in a Drawing
Effect of Cutting Tools
Selection of Cutting Data
Machining Direction
Chatter / Vibration
COOLANTS
Benefits of Coolants
Working with Coolant
Chapter 12
MACHINING HOLES
FIXED CYCLES - OVERVIEW
DRILLING HOLES
Drilling Example
Terminology
Initial Level and R-Level
Depth
Spot Drilling + Counterbore + Countersink