Peter Smid

CNC Tips and Techniques


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Title Page

      CNC Turning — Why Are There So Many Errors?

      Why Should I Know Manual Programming?

      Running the First Part — Economically, That Is

      Are You a CAM Machinist?

      CAD/CAM or CAD and CAM?

      Part Program Upgrading and Updating

      Lathe Cycles — To Use or Not to Use?

      Short Suggestions for Long Programs

      Keep Records — Document Your Programs

      Focus on Numbers

      CNC Programmer/Operator — Should One Person Be Both?

      Using CAM Software in Small Shops

      Minimizing Program Length

      Conversion of Lathe Cycles

      Shifting Program Zero — Part 1

      Shifting Program Zero — Part 2

      Threading Methods Compared

      When 1 Thou Equals 65 Dollars

      Alternate CNC Machine Selection

      Standard and Rigid Tapping — Part 1

       2006

      Standard and Rigid Tapping — Part 2

      Mastering M-Functions

      Tool Length Setup — Three Methods

      (Extreme) Power of Subprograms

      Special Purpose G-Codes

      Well-Structured Program Structure

      Imaging a Mirror Image

      Homeward Bound with G28

      Block Skip Adds Flexibility

      Simulating the Toolpath

      Automatic Corner Breaking

      Working in Planes

       2007

      A Case for Polar Coordinates

      The “Other” Work Offset

      Going Helical with Threads

      G76: Two Formats, One Cycle

      Multi-Start Threading

      Automatic Tool Change — ATC

      Maximum Tool Specifications

      Control Features — Optional or Standard?

      Fixed Cycles Repetition

      Programming Process — When Is It Completed?

      Quality in CNC Programming

      Short Ideas and Observations

       2008

      Spindle Speed Control on CNC Lathes

      Live Tooling on CNC Lathes

      Trial Cut for Measuring

      Easing Up on Calculations

      Preventing Scrap with Offsets

      Interpreting a CNC Program

      Default Settings in Macros

      Create Your Own G-Code

      Scaling Option

      Safety and CNC Programming

      Special Tapping Macro

      Setting Up a New Part

       2009

      Getting Rid of Chatter

      Lathe Cycles G70–G72 — Part 1

      Lathe Cycles G70-G72 — Part 2

      Limitations in Threading

      Programming a Long Thread

      Threading with G76 Cycle — Basics

      Threading with G76 Cycle — Details

      Feedrate Adjustment on Arcs

      Knurling on CNC Lathes

      Programming a Full Circle

      Peck Drilling — Watching the Q

       Appendices

      Appendix 1 Interpreting a CNC Program

      Appendix 2 Default Settings in Macros

      Appendix 3 Create Your Own G-Cod

       Appendix 4 Scaling Option

      Appendix 5 Safety and CNC Programming

      Appendix 6 Lathe Cycles G70-G72 — Part 2

       Index

       OPERATIONS

       General

      Running the First Part — Economically, That Is

      Preventing Scrap with Offsets

      Scaling Option

      Setting Up a New Part

      Getting Rid of Chatter

      Peck Drilling — Watching the Q

       Cutting

      Trial Cut for Measuring

       Knurling

      Knurling on CNC Lathes

       Lathes

      Lathe Cycles — To Use or Not to Use?

      Conversion of Lathe Cycles

      Spindle Speed Control on CNC Lathes

      Live Tooling on CNC Lathes

      Lathe Cycles G70–G72 — Part 1

      Lathe Cycles G70-G72 — Part 2

       Machines

      Alternate CNC Machine Selection

       Tapping

      Standard and Rigid Tapping — Part 1

      Standard