Carbide Drills
Troubleshooting

Carbide End Mills | Carbide Drills | Carbide Reamers

 

Solutions Key 1) Reduce RPM
2) Increase feed
3) Increase RPM
4) Reduce feed
5) Increase coolant
6) Increase mixture
7) Add negative hone
 		8) Repoint drill
9) Correct drill         type/size
10) Use self-centering            drill
11) Spot/center drill
12) Clean surface
13) Improve            rigidity/clamp
14) Tighten holder
 		15) Use straight flute
16) Use stub length
17) Place further up            holder
18) Use three-flute
19) Use slower helix
20) Use parabolic            design
21) Change point style

Problem Cause Solution
Heavy Wear at Outer Edge
  • Insufficient coolant
  • Incorrect speed & feed
    •
  • 5, 6
  • 1, 2, 8
    •
    Chipping at Outer Cutting Edge
  • Loose tool, tool movement
  • Workpiece movement
  • Poor coolant conditions
  • Incorrect speed & feed
    •
  • 8, 10, 11, 12, 14, 16, 17, 21
  • 8, 12, 13, 21
  • 5, 6
  • 1, 2, 3, 4
    •
    Drill Point Chipping
  • Loose tool, tool movement
  • Incorrect speed & feed
  • Drill centering
    •
  • 10, 11, 12, 14
  • 1, 2, 3, 4
  • 8, 10, 11, 12, 21
    •
    Margin Wear
  • Drill margin rubbing wall
  • Poor chip evacuation
  • Poor coolant conditions
  • Workpiece movement
    •
  • 20 (check drill for backtaper)
  • 5, 6, 8, 20
  • 5, 6
  • 8, 13, 21
    •
    Tool Breakage
  • Loose tool, tool movement
  • Workpiece movement
  • Wrong drill type
  • Poor coolant conditions
  • Incorrect speed & feed
    •
  • 8, 10, 11, 12, 14, 16, 17, 21
  • 8, 12, 13, 21
  • 9, 15, 16, 18, 19, 20
  • 5, 6
  • 1, 2, 3, 4
    •
    Poor Tool Life
  • Incorrect speed & feed
  • Poor coolant conditions
  • Wrong drill point
    •
  • 1, 2, 3, 4
  • 5, 6
  • 8, 21
    •
    Drill Walk
  • Incorrect speed & feed
  • Tool wear
  • Wrong drill point
  • Material condition
    •
  • 1, 2
  • 7, 8, 21
  • 8, 10, 11, 21
  • 11, 12, 15, 16, 17
    •
    Chip Welding
  • Poor coolant conditions
  • Wrong drill type
    •
  • 5, 6
  • 19, 20
    •
    Hole Size Inaccuracy
  • Incorrect speed & feed
  • Poor coolant conditions
  • Loose tool
  • Wrong drill type
    •
  • 1, 2, 3, 4
  • 5, 6
  • 14
  • 9, 18
    •
    Non-Cylindrical Hole
  • Loose tool, tool movement
  • Workpiece movement
  • Incorrect speed & feed
  • Wrong drill type
    •
  • 8, 10, 11, 12, 14, 16, 17
  • 13
  • 1, 2
  • 18, 21
    •
    Heavy Burr
  • Incorrect speed & feed
  • Incorrect drill point
    •
  • 1, 2
  • 8, 21
    •
    Blue Chips
  • Poor coolant conditions
  • Tool wear
    •
  • 5, 6
  • 7, 8
    •
    Long Chips
  • Poor point grind
  • Incorrect speed & feed
    •
  • 8
  • 1, 2
    •

     

     

    Tungsten ToolWorks is a manufacturer of customized (special) solid carbide cutting tools, sold worldwide under the Tungsten ToolWorks brand name. Products include solid carbide end mills, drills, reamers, burrs, micro tools, sub-miniature tools, micro tools, engraving tools, boring tools, keyseat cutters, burrs, slitting saws, carbide cylinders, countersinks, routers, radius mills, CBN tools, compression tools, and more. Technologies include SmoothCoat PVD hard coatings, SmoothGrind polished cutting edges, SmoothEdge prep and hone, and SmoothContricity shrink fit ready shanks. Coatings include D2 CVD diamond, D1 PVD amorphous diamond, TA TiAlN, AT AlTiN, TN TiN, TC TiCN, and A1 TiB2. Industries using our products include aerospace, semiconductor, die & mold, micro (nano) machining, woodworking, medical, consumer electronics, automotive and more. Workpiece materials to be drilled, milled, reamed, routed, engraved and more include titanium (6Al-4V, 5553), stainless (303, 304, 316, 410, 420, 440C, 15-5, 17-4, 13-8, 316L), tool steels (A2, D2, H13), general steels (1018, 1020, 4140, 4340, P20), Inconel (625, 718), cast iron, non-ferrous materials including aluminum, copper, brass, bronze, wood & plastics, CFRP (carbon fiber reinforced plastic), graphite, composites, fiberglass, and more. Tungsten ToolWorks is a Tool Alliance company.