A cutter head assembly includes a drive shaft, a blade carrier and a blade unit. The drive shaft has a longitudinal axis and is made of steel. The blade carrier is sleeved and retained on the drive shaft. The blade carrier has a length extending parallel to the longitudinal axis and is made of aluminum alloy. The blade unit is disposed on the blade carrier and surrounds the longitudinal axis.

A cutter head for a woodworking machine, having a cylindrical, conical, or profiled base body which comprises at least two tool holders for holding a cutting insert. The tool holders each comprise a groove which is open in the radial direction, in which a cutting insert is clamped between a first groove wall of the groove and a one- or two-piece clamping element. The cutter head of can include a support plate arranged between the cutting insert and the first groove wall. The clamping screws are arranged at right angles to the axis and are thus accessible for a cutter change. The screw holder on the clamping element is a ball socket, and the front end of the screw is a round head. The cutter head of has a spring element, which positions the cutting insert during the clamping process, and presses the same via the functional surface radially outward against a stop.

A cutter head for a woodworking machine, having a cylindrical, conical, or profiled base body which comprises at least two tool holders for holding a cutting insert. The tool holders each comprise a groove which is open in the radial direction, in which a cutting insert is clamped between a first groove wall of the groove and a one- or two-piece clamping element. The cutter head of can include a support plate arranged between the cutting insert and the first groove wall. The clamping screws are arranged at right angles to the axis and are thus accessible for a cutter change. The screw holder on the clamping element is a ball socket, and the front end of the screw is a round head. The cutter head of has a spring element, which positions the cutting insert during the clamping process, and presses the same via the functional surface radially outward against a stop.

A cylindrical cutting head for a wood workpiece, comprising an even number of main grooves disposed on helices running on a length of a surface thereof, wherein each main groove comprises cutting inserts; each cutting insert comprising a knife removably locked in position in relation to the main groove by a clamp. A cutting insert for a cylindrical cutting head for a wood workpiece, comprising a knife and a clamp, wherein the knife is removably positioned and locked in position in relation to the cylindrical cutting head by a clamp.

A cylindrical cutting head for a wood workpiece, comprising an even number of main grooves disposed on helices running on a length of a surface thereof, wherein each main groove comprises cutting inserts; each cutting insert comprising a knife removably locked in position in relation to the main groove by a clamp. A cutting insert for a cylindrical cutting head for a wood workpiece, comprising a knife and a clamp, wherein the knife is removably positioned and locked in position in relation to the cylindrical cutting head by a clamp.

A polyhedral knife that in side profile resembles a gull wing is configured for being securely retained in a clamping assembly defined by a clamp and a holder, wherein the knife is retained between the clamp and the holder. The knife has a central portion between opposite wing portions. The knife is rectangular in shape and has a central, upwardly extending semi-circular upper ridge that extends across the knife on the upper surface and the upper ridge defines a locator that is retained in a cooperatively shaped groove in the clamp. The lower surface of the knife is defined by a central locator ridge and concave surfaces on opposite sides of the locator. The clamp and the holder have cooperatively shaped, angled and radiused surfaces to mate with facing surfaces of the knife.

A polyhedral knife that in side profile resembles a gull wing is configured for being securely retained in a clamping assembly defined by a clamp and a holder, wherein the knife is retained between the clamp and the holder. The knife has a central portion between opposite wing portions. The knife is rectangular in shape and has a central, upwardly extending semi-circular upper ridge that extends across the knife on the upper surface and the upper ridge defines a locator that is retained in a cooperatively shaped groove in the clamp. The lower surface of the knife is defined by a central locator ridge and concave surfaces on opposite sides of the locator. The clamp and the holder have cooperatively shaped, angled and radiused surfaces to mate with facing surfaces of the knife.

A device for processing wood and other material is described. A planer head, typically used in wood processing, has a cylindrical body which rotates around an axis and comprises one or multiple cutting knives. The knives are held in place by a knife holder. The knife holder is placed in the cylindrical body by insertion into holes in the cylindrical body and held in place through a fastening assembly comprised of a long and slender fastening member with a threaded end.

A device for processing wood and other material is described. A planer head, typically used in wood processing, has a cylindrical body which rotates around an axis and comprises one or multiple cutting knives. The knives are held in place by a knife holder. The knife holder is placed in the cylindrical body by insertion into holes in the cylindrical body and held in place through a fastening assembly comprised of a long and slender fastening member with a threaded end.

An adjustable multi-section blade structure for an automatic planer includes a cutter shaft, a plurality of cutter holders, a plurality of cutters, and a blade calibration tool. The cutter shaft is a long cylinder. The cutter shaft has an outer annular surface and an axis. The cutter holders are arranged at substantially equiangular intervals around the outer annular surface of the cutter shaft. The cutter holders each have a fixing surface, a bearing surface, and an arcuate groove. The cutters are spaced apart from each other and disposed on the fixing surface. In addition to reducing the cutting load, the precision of the blade can be calibrated through the blade calibration tool to achieve an energy-saving effect.