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XYZ Machine Tools
ProTURN SLX 1630 ProtoTRAK SLX CNC Safety, Installation, Service & Parts List Manual
Problems With
Can Contribute To:
Feed and Speeds (spindle rpm)
See below
Poor finish
Excessive speeds and feeds can break cutting tools
or wear out too fast.
Tooling
Using the wrong cutter for an application
Poor finish
Parts incorrect
Cutting too deep
Part dimensions incorrect
Driving and cutting forces cause deflections, since no
material is totally rigid
No coolant
Poor finish, decrease the life of the cutter
The following is a list of common machining problems and some possible solutions.
Problem
Check or Try This
Poor surface finish
Dull tool
Reduce
feedrate
Increase spindle speed
Use a higher rake angle tool
Make sure tool is not dull or chipped
Use proper grade of cutting tool
Use coolant
Check to see if tools are on the centerline
Long workpieces out of round
Use a follow or steady rest
Excessive chatter
Tool bit improperly ground or not on center
Avoid extreme negative rake inserts
Tool overhang too great, tool deflection
Improper feeds and speeds
X gib loose. See
Gib Adjustment, Section 5.2.1
Work improperly supported
Machine tool out of level - See
Leveling Procedures,
Section 2.9.
4.1.4.1
Spindle Speeds
Spindle speeds are influenced by a number of variables:
Material
Rigidity of the Machine Setup
Coolant
Insert, geometry and material of insert
Depth of cut
4.1.4.2
Feedrates
Factors that affect feedrates:
Depth of cut
Design or type of insert
Sharpness of the insert
Workpiece material
Type of finish or accuracy required
