Tool Nose Radius Compensation Chart Download

Posted : admin On 12/26/2021

CNC Lathe Tool Nose Radius Compensation. This video “CNC Lathe Tool Nose Radius Compensation” is a follow up from my previous video “Tool Nose Radius Compensation on a CNC lathe”. When you use tool nose radius compensation on a CNC Lathe (that means we are using G41 and G42) you have to tell the machine where the cutting point of the turning tool is so that the correct tool path is. CNC Machine G-code generator for lathes & mills, added automatic code generation for dimensional patterns, New send and recieve, Now with limited engraving, set radius and feed rate, tool nose radius, corner or fillet radius, set clockwise or counterclockwise, set drill depth and feed rate, add G-codes and M-codes, set threads per inch, set up. CNC LATHE TAPER. Calculate chamfers, taper, & radii. Then export the g-code for your CNC lathe. Export corner rounding g-code for internal & external chamfers, taper, & radii with tool nose compensation. G36 automatic tool compensation X G37 automatic tool compensation Y G40 tool nose radius compensation cancel G41 tool nose radius compensation left: G42 tool nose radius compensation right G50 G92 programming of absolute zero point maximum spindle speed setting G65 user macro simple call G66 user macro modal call G67 user macro modal call. Cutter Compensation on Lathe Sign in to follow this. If I was to start programming with tool nose center,we would have a lotta scrap parts from the guys forgetting to comp the tools! The blue 'undercut' line is the path that the machine will drive but the resulting part will be correct because the nose radius is traveling along the.


M00 Program Stop
M01 Optional Stop
M02 End of Program
M03 Spindle CW
M04 Spindle CCW
M05 Spindle Stop
M06 Tool Change
M08 Coolant ON
M09 Coolant OFF
M12 Machine Spindle STOP
M13 Machine Spindle CW
M14 Machine Spindle CCW
M15 C-Axis Positioning
M16 C-Axis Positioning (NEG)
M17 CEJ MATIC :Request of Data transfer
M18 Post-process Gauging RS232C: Request of Data transfer
M19 Oriented Spindle Stop
M20 Tailstock Barrier OFF or spindle interference monitoring OFF (opposed two-spindle models)
M21 Tailstock Barrier ON or spindle interference monitoring ON (opposed two-spindle models)
M22 Chamfer OFF
M23 Chamfer ON
M24 Chuck Barrier OFF, Tool interference OFF
M25 Chuck Barrier ON, Tool interference ON
M26 Thread Lead Along Z-Axis
M27 Thread Lead Along X-Axis
M28 Tool Interference Check Function OFF
M29 Tool Interference Check Function ON
M30 End of Program
M32 Straight In-feed along thread face mode (on left face)
M33 Zigzag in feed in Thread Cutting
M34 Straight In-feed along thread face mode (on right face)
M40 Spindle gear Range Neutral
M41 Spindle Gear Range 1
M42 Spindle Gear Range 2
M48 Spindle Speed Override Ignore Cancel
M49 Spindle Speed Override Ignore
M55 Tailstock Spindle Retract
M56 Tailstock Spindle Advanced
M58 Chucking Pressure Low
M59 Chucking Pressure High
M72 ATC Unit Position at Approach Position
M73 Thread Cutting Pattern 1
M74 Thread Cutting Pattern 2
M75 Thread Cutting Pattern 3
M76 Parts Catcher Retract
M77 Parts Catcher Advanced
M78 Steady Rest Unclamp
M79 Steady Rest Clamp
M80 over cut Advanced
M81 over cut Retract
M83 Chuck Clamp
M84 Chuck Unclamp
M85 No Return to the Cutting Starting Point after the completion of rough turning cycle (LAP)
M86 Turret Indexing direction: CW (reverse)
M87 Cancel of M86
M98 Tailstock Spindle Thrust Low
M99 Tailstock Spindle Thrust High
M109 Cancel of M110
M110 C-Axis Joint
M134 Z-Axis Thrust Monitoring OFF
M135 Z-Axis Thrust Monitoring ON
M136 Designation of Multiple fixed cycle configuration
M137 Touch setter interlock release ON
M138 Touch setter interlock release OFF
M139 Lead Machining Function - Learning Operation
M140 Tapping Cycle M-Tool Constant Rotation Answer Ignored
M141 C-Axis Clamp or not Selection
M142 Coolant Pressure Low
M143 Coolant Pressure High
M146 C-Axis Unclamp
M147 C-Axis Clamp
M152 M-Tools Spindle Interlock ON
M153 M-Tools Spindle Interlock OFF
M161 Feedrate Override Fix (100%)
M162 Cancel of M163
M163 M-Tools Spindle Speed Override Fix (100%)
M168 Ignoring M-Tool Spindle Constant Speed Answer
M169 C-Axis NoClamp
M191 M-Tool Spindle Orientation Direction Specified CW
M192 M-Tool Spindle Orientation Direction Specified CCW
M197 Thread Cutting Phasing Stroke Clear
M211 Keyway Cutting Style: Minus Direction
M212 Keyway Cutting Style: Zigzag
M213 Keyway Cutting Style: Designated Depth Infeed
M214 Keyway Cutting Style: Equal Depth Infeed

When programming a CNC machine with a turning tool that has a rounded tip, errors in cutting can occur on tapered edges and circular contours. This is corrected automatically by FeatureCAM or alternatively using a Tool Nose Radius (TNR) compensation command in a CNC control.

The attached file contains NC code and a FeatureCAM part file that will be referenced in the explanation below (remember to use tools from last save). Feel free to follow along.

Tool Radius Compensation For Milling

Tool radius compensation chart

FeatureCAM adjusts for the tool nose radius that is entered in the tool properties automatically.

Tool Nose Radius Compensation Chart Download

For visualization of this compare no_tnr__radius.txt and no_tnr__no_radius.txt. You will notice that the tool paths are different. This is FeatureCAM adjusting for a tool with a radius versus a tool without a radius.

It should be noted that TNR in CNC controls and in FeatureCAM was designed to compensate for the tool nose radius errors and not for adjustability of the tool path itself. In this respect, TNR for turning is fundamentally different from cutter compensation for milling. TNR should be used as intended and not otherwise. If the user wishes for adjustability of the tool path they should adjust x and z offsets in the control or change the tool path in FeatureCAM.

On turning features the user has the option to use TNR compensation to correct for these errors as an alternative to FeatureCAM's correction.

When this is checked FeatureCAM outputs code as if the tool had a radius of 0. To see this compare no_tnr__no_radius.txt and tnr_radius.txt. You will notice that the cutting tool path is the same with the addition of the cutter compensation codes.

Although FeatureCAM does support both options, we recommend for simplicity, using FeatureCAM's automatic tool nose radius correction instead of the controls compensation. If you prefer using the control's compensation then it is suggested that you gain a full understanding of how it works and how the tool data in the control is setup.

Note: The 'Enable Tool Nose Radius Comp checkbox' controls whether the corresponding TNR 'NC codes' (i.e. G41, G42, G40) come out in the NC code. It will not have any effect on the tool path produced.