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Illustration for Proper Grooving Toolholder(s) Setup and Applications |
Condition |
Recomendation |
Positioning Holder for Grooving operation
 |
Cutting a groove slightly wider then the width of the groove tool
Plunge the center of the groove
Plunge eachside of the groove to obtain the specified width.
Use a slower feed rate when cutting groove sides |
|
Burrs |
Assure tool center height.
Use sharp tool.
Use a positive rake, PVD coated insert.
Use correct insert geometry.
Chamfer (if possible) before grooving.
Change tool path |
|
Poor Surface Finishes |
Increase speed.
Use sharp tool.
Dwell tool in bottom 1-3 revolutions (max.).
Use proper chip control geometry.
Increase coolant flow/concentration.
Utilize proper setup(s).
Use correct insert geometry.. |
Cutting a wider groove
Plunge out both sides of desired groove width.
Plunge center of area to remove material remaining.
Plunge both sided of the groove at the required angle,using approximately 1/2 of
the maximum width of the cut.
|
Bottom of Groove not Flat |
Use sharp tool.
Dwell tool in bottom 1-3 revolutions (max).
Reduce tool overhang (increases rigidity).
Correct tool setup (see illustrations to the left).
Reduce feed rate at bottom of groove
Use a wider insert (if possible).
Check tool center height. |
|
Poor Chip Control |
Use chip control insert.
Use sharp tool.
Increase coolant flow/concentration.
Adjust feed rate (normally increase). |
|
Chatter |
Reduce tool and/or workpiece overhang.
Adjust speed.
Adjust feed rate.
Check tool center height. |
Finish Turning a Groove
Refer to and follow the recommendations listed above.
Follow the tool path (outlined) shown to avoid insert chipping and obtain groove
wall perpendicularity.
Use the lightest depth of cut that will still allow for good chipbreaking, insert
life, and surface finishing.
|
Insert Chipping |
Increase speed.
Decrease feed rate.
Increase tool and/or workpiece setup rigidity. |
|
Insert edge buildup |
Use positive rake PVD coated insert.
Increase speed.
Decrease feed rate.
Increase coolant flow/concentration. |
|
Groove walls not straight |
Check to see if tool is square to the workpiece.
Use correct insert hand.
Reduce tool or and/or workpiece overhang.
Use sharp insert. |