Cutting Tools - Woodworking
Cutting geometries
 |
Wood milling cutters with upcut Upcut milling cutters have a positive helix, which ensures excellent chip removal. Due to the twist of the cutter, upcut cutters generate a vertical force that pulls the material upwards. This can lead to fraying of the surface. Small flaking may occur on the top of coated wood. High feed rates can be achieved thanks to the good chip removal. Up-Cut milling cutters should therefore be used where high chip removal is prioritized over high surface quality. Application- Milling deep contours - Drill milling Use as an alternative if. ..- high demands are placed on the surface quality |
 |
Wood milling cutter with downcut Downcut milling cutters have a left-hand twist and consequently generate a force that presses the workpiece onto the milling table. When routing thin wood panels, the workpiece is prevented from lifting, which reduces vibrations and produces very clean cutting edges. The downcut geometry can prevent chipping of the coating on the top side, particularly when milling coated wood. Downcut milling cutters are therefore the first choice when single-sided coated wood panels need to be produced with a high surface quality. Due to the left-hand twist, the chips are not discharged upwards. With deep contours, the chips can block the groove. Application - Coated wooden panels - Wood that tends to fray - Thin wooden boards Use as an alternative if. .- deep grooves and holes need to be milled out. - clean cut edges are required on the top and underside of wooden panels coated on both sides. → Up&Downcut milling cutter |
 |
Wood router bits with straight cutting edges Compared to upcut and downcut router bits, router bits with straight cutting edges have no twist. This means that no force is exerted on the surface. Routers with straight cutting edges can be used universally and produce clean workpiece edges thanks to the cutting edge geometry. Application - Universally applicable for MDF, multiplex, hardwood Use as an alternative if. ..- Wood types that tend to fray strongly need to be milled → Downcut milling cutter |
 |
Wood router bits with up & downcut Up & downcut router bits are a combination of left-hand twist (downcut) and right-hand twist (upcut). Compared to downcut cutters, up & downcut cutters ensure clean cutting edges on the top and bottom of the workpiece. This special cutting geometry is therefore used in particular when processing wooden panels coated on both sides. Application - Wood panels coated on both sides - Wood that tends to fray Use as an alternative if. ..- deep grooves and holes need to be milled out |
 |
Wood milling cutter with chip breaker Milling cutters with chip breaker geometry have staggered undercutting of the cutting edges, allowing the chips to be optimally broken and removed. This special cutting edge geometry enables high material removal rates to be achieved. The milling cutters are therefore particularly suitable for quickly clearing pockets and grooves Application: - Milling pockets, grooves and holes with high infeed values and speeds - Preliminary work before a finishing pass Use as an alternative if. .- Visible components with a non-marking surface need to be produced |
Coatings
A significant increase in tool life can be achieved by coating milling cutters. Wood milling cutters must have sharp cutting edges for optimum results. Many common coatings for cutting tools are therefore unsuitable for wood milling cutters, as the cutting edges are rounded too much and therefore lose their sharpness. We offer all our wood milling cutters with the CrN-Prisma coating. This coating maintains the sharpness of the cutting edges. The amorphous glass-like top layer protects the cutting edges from abrasive wear and reduces cutting forces. |
CrN prism (CrN-Si-O2)
|
Milling cutter length:
| We offer our wood milling cutters in a wide range of cutting edge lengths in order to achieve optimum adaptation to the workpiece. When selecting the cutter, make sure that the cutting edge length is only as long as necessary for the application. Longer cutters tend to vibrate more, especially if only a short cutting edge length is engaged. In addition to a poorer surface quality, the vibrations also lead to increased wear and thus to a reduction in tool life. |  |
Possible problems in woodworking
| Problem(s) | Cause(s) | Solution approach |
|---|---|---|
| Discoloration/tarnishing of the cutter Burnt wood edges |
strong heat development due to unfavorable cutting values
- Speed too high |
Check cutting values The entry into the cutting movement should also not take place at a reduced feed rate. Instead, enter the wood using a ramp (entry at an angle). Avoid vertical entries into the wood if possible . |
| Fraying of the surface Flaking of the top layer on coated wooden panels | Cutting edge geometry of the milling cutter not optimal for the application. Service life of the milling cutter exceeded | Use cutters with straight cutting edges, downcut or up&downcut. The advantages and disadvantages are summarized in the first part of this article. |
| Vibration strong noise development | unstable workpiece clamping High concentricity error |
If possible, select a shorter milling cutter. Clamp the shank of the milling cutter as deep as possible. |
| Breakage of the milling cutter | Feed rate or infeed too high | Adjust cutting values, reduce depth infeed |