Abstract: Rotors formed by an additive manufacturing process are presented. In one example, a rotor includes a monolithically formed rotor body and a plurality of helically arranged lobes formed from a first material, wherein each of the plurality of lobes defines an internal cavity between an outer surface and a central aperture.

Abstract: A rotary cutting tool. The tool has a body with outside diameter (OD), and outer surface, and a longitudinal axis, a plurality of flutes, helical in some embodiments. Flutes include a narrow leading edge land portion with circular segment profile and having flute cutting edge portions along a substantially uniform circumferential location, with an eccentric relief margin rotationally rearward of the narrow leading edge land portions. Face portions are provided with face cutting edge portions, and with a first dish portion adjacent each of the cutting edge portions sloping inwardly and downwardly generally toward a central longitudinal axis at a first dish angle alpha (?) Corner blend portions extend from flute cutting edge portions to the face cutting edge portions. Corner blend portions are provided in a variety of profiles, including an embodiment wherein the profile of the corner blend portions are truncated before the segment of curvature becomes tangential to the face cutting edge portions.

Abstract: A conveying device (4) for conveying rolled bar segments, continuously exiting from a cutting shear (3), comprising at least two conveying channels (10, 11) for conveying the bar segments; at least one separation wall (8) separating a first conveying channel (10) from a second conveying channel (11); and at least one fixed partition (9), provided below the wall (8) and which separates the first channel (10) from the second channel (11); the fixed partition (9) is configured so that, at speed, when a rolled bar is deviated to pass from a direction towards the first channel to a direction towards the second channel, the tail of a first bar segment (30) advances in the first channel (10) by passing below the fixed partition (9), while the head of a second bar segment (31) after the first segment (30) advances in the second channel by passing above the fixed partition.

Abstract: Described is an end mill with four straight front cutting edges arranged on a front side and a corresponding number of circumferential cutting edges that each emanate from the outer nose of the front cutting edges and are separated from each other by flutes. One of the front cutting edges passes over into a second cutting edge via a free surface intersecting line. The additional front cutting edges lying between the latter in the cutting direction are offset relative to each other by a first angular pitch of 180°, and end before the middle.

Abstract: A cutterhead for a peripheral milling machine including a cutterhead body including a generally cylindrical portion and a plurality of circumferential, spaced and offset blade unit mounting cavities extending into the cutterhead body from the periphery of the cylindrical portion for receiving a blade unit. The cutterhead further includes a plurality of blade units each having at least one cutting edge and means for removably securing each of the removable blade units in the corresponding blade unit mounting cavity. The cutting edge of each of the blade units is disposed to align with the cutting edge of each of the other blade units in adjacent mounting cavities to form a substantially helical, stepped blade row when the blade units are secured to the cutterhead body.

Abstract: A cylindrical cutter for machining wood, wooden materials and plastics, has at least one helical cutting edge, wherein a helix angle ?s of the at least one cutting edge is in a range of 70° to close to 90°, a rake angle ?r of the at least one cutting edge between a tool orthogonal plane Po and a rake face A?—measured in a tool reference plane Pr—is at least 5°, and a wedge angle ?r between the rake face A? and a flank A?—measured in the tool reference plane Pr—is 45° to 65°.

Abstract: A cutter head assembly for a wood planing machine includes a shaft, a plurality of cutter-mounting sleeve modules sleeved on the shaft, and a plurality of cutter modules respectively secured to the sleeve modules such that cutting edges of the cutter modules extend beyond outer wall surfaces of the sleeve modules. An angularly variable positioning mechanism includes an axially extending guiding member disposed on the mount segment, and a plurality of axially extending guided members disposed on inner wall surfaces of the sleeve modules to mate with the axially guiding member. By virtue of fitting engagement between the guiding member and a selected one of the guided member of each sleeve module that are sequentially sleeved onto the shaft, the cutting edges together define a cutting contour line that winds around the shaft.

Abstract: The planing blade axle includes an axle body and blades assembled externally onto the axle body in a predefined pattern. Tapped holes are arranged onto the blade assembly surface of the axle body for assembly of blades. A pyramidal through-hole is placed centrally onto the blade, so that the blades screw securely into the tapped hole via the bolts with pyramidal end blade. An expanded shoulder is additionally placed at a top of the pyramidal through-hole, so that an expanded flange is placed opposite to the pyramidal end of the bolt. When the blade is screwed by the bolt, a definite and solid positioning effect will be achieved if the flange contacts the expanded shoulder of the blade. The present invention efficiently prevents excessive locking and subsequent cracking of the blade, increasing positioning area, leading to prolonged service life and a more stable locking state with improved applicability.

Abstract: A cutterhead for a peripheral milling machine including a cutterhead body including a generally cylindrical portion and a plurality of circumferential, spaced and offset blade unit mounting cavities extending into the cutterhead body from the periphery of the cylindrical portion for receiving a blade unit. The cutterhead further includes a plurality of blade units each having at least one cutting edge and means for removably securing each of the removable blade units in the corresponding blade unit mounting cavity. The cutting edge of each of the blade units is disposed to align with the cutting edge of each of the other blade units in adjacent mounting cavities to form a substantially helical, stepped blade row when the blade units are secured to the cutterhead body.

Abstract: A cylindrical cutter for machining wood, wooden materials and plastics, has at least one helical cutting edge, wherein a helix angle ?s of the at least one cutting edge is in a range of 70° to close to 90°, a rake angle ?r of the at least one cutting edge between a tool orthogonal plane Po and a rake face A?—measured in a tool reference plane Pr—is at least 5°, and a wedge angle ?r between the rake face A? and a flank A?—measured in the tool reference plane Pr—is 45°to 65°.

Abstract: There is provided a rotatable cutting tool for supporting at least one knife in at least two alternate angular cutting configurations. The cutting tool includes a body that defines at least one cavity extending generally in a longitudinal direction of the body. Each cavity is defined by first and second knife support surfaces, which are provided in an opposing, non-parallel configuration. The first knife support surface is configured to support one of the knives that is urged against the first surface at a first hook angle, and the second knife support surface is configured to support one of the knives that is urged against the second surface at a second hook angle, which is different from the first hook angle.

Abstract: The present invention relates to a shaft 4 for planers, of the type where the peripheral surface has, formed along it, longitudinal recesses 5 each housing a working blade 1 and a prism-shaped locking or retaining bar 2, with a system for rapidly fixing said blades, comprising two series 7 and 8 of rollers housed in succession in a recess 6 parallel to and radially inside the recess 5 and a central operating member of the screw type 13, 14 and 15 able to exert an axial thrust on the toggles formed by the rollers at the two ends of the recess 6, by means of two thrust elements 11 and 12, so as to produce, on the locking bar 2, a radial thrust sufficient for fixing the blade 1. (FIG.

Abstract: A cutter for a wood planing machine includes a block piece having a blade-mounting face that is formed with a positioning groove, and a blade attached to the blade-mounting face and having a plurality of positioning tabs projecting into and engaging the positioning groove.

Abstract: A stump removal tool for boring around a stump at ground level. The stump removal tool includes an elongate member having a first end, a second end and outer peripheral wall extending between the first and second ends. The elongate member has a generally circular cross-section taken transversely to a longitudinal axis of the elongate member. A connecting portion is attached to and extends away from the first end of the elongate member. The connecting portion is removably coupled to a power tool. A plurality of teeth is attached to an outer surface of the peripheral wall. The teeth are spaced from each other and are positioned in a pattern extending from the first end to the second end. The elongate member is attached to the power tool and rotated such that the teeth may be used for boring through a stump.

Abstract: A cutting tool device for a wood planing machine includes a driving shaft having a cylindrical portion and a plurality of insert receiving channels. Each of the channels includes a knife seat wall surface and an abutment wall surface, which confine an accommodating cavity therebetween. The knife seat wall surface has left and right end edges respectively having left and right secant points at a respective junction with an outer wall surface of the cylindrical portion. The left secant point lags behind the right secant point in a counterclockwise operating direction. A planing knife is disposed to abut against the knife seat wall surface. A tightening insert member is inserted into the accommodating cavity, and has front and rear wall surfaces respectively abutting against the planing knife and the abutment wall surface to thereby clamp the planing knife firmly in the respective channel.

Abstract: Apparatus for creating wooden shavings for stock bedding from logs which includes a frame supporting a carriage bed and rotary carriage ring. Arcuately spaced rotary cutter means are provided on the carriage bed, and are positioned to contact logs supported on the carriage ring. The carriage ring consists of an annular carriage support ring which supports arcuately spaced log-receiving boxes, so that upon rotation of the annular carriage support ring, logs positioned within the log-receiving boxes are exposed to the cutting action of the rotary cutter means.

Abstract: A rotary cutter is disclosed. The rotary cutter includes a roller having a plurality of flutes defined in the periphery thereof, and a plurality of blades arranged on the periphery of the roller along each of the flutes. Each of the flutes has a pair of helical sections that branch outward and forward from a junction and extend around the periphery of the roller.

Abstract: An apparatus for smoothing a workpiece has a housing that is displaced relative to the workpiece in a direction and that carries a pair of augers provided with respective screwthreads having outer edges in contact with the workpiece. These augers are rotated on the housing about respective generally parallel axes transverse to the direction so as to scrape the workpiece with the screwthreads. Furthermore the augers are of such a hand and the are rotated in such a direction that the augers exert on the workpiece opposite axially directed forces.

Abstract: A router bit for laterally cutting through sheets of wood product, such as plywood and the like. The bit includes a shank portion adapted to be gripped in the chuck of a router, a fluted portion, and a tip. The fluted portion has two helical left-hand flutes. Each flute has a cutting edge and a web portion having a convex surface that extends rearwardly and immediately inwardly from the cutting edge, without a land, in a continuous curve. The flutes are formed by parabolic grinding. In one embodiment the tip is conical in shape and has two diametrically opposed tip flutes for cutting axially into a workpiece. In another embodiment the tip is flat and the bit is adapted only to cut laterally through the workpiece.

Abstract: When conventional mechanical equipment for removing branches or limbs from a tree trunk is used, stumps of the branches removed remain on the tree trunk. The present invention avoids the creation of such stumps when a trunk (or a length of a trunk) is being transported through a mill or compression debarking equipment and is simultaneously rotated. The invention uses an elongate helical milling head, mounted at the end of a support arm and rotated by a motor to remove the branches. The milling head axis is positioned parallel to the axis of the trunk with the cutting surface of the milling head close to the bark of the trunk. Normally a brace member is included to stiffen the mounting of the milling head. Preferably the milling head is formed as a plurality of short milling heads mounted colinearly and with their helical cutters aligned.

Abstract: A cutterhead for an industrial woodworking machine which is operable to incorporate a sufficient number of knife rows to permit a staggered tooth arrangement for noise reduction or, alternatively, to provide improved surface finish at higher feed rates without increasing cutterhead RPM. The cutterhead also provides for the generation of a variety of shapes when used with appropriately shaped individual cutting inserts. The cutterhead includes a cutterhead body having a cylindrical portion having a plurality of circumferentially spaced grooves for receiving a plurality of cutting inserts, a predetermined hole pattern in the cutterhead body for securing the cutting inserts in the grooves, and in the preferred embodiment elongated slots in the cutting inserts which permit lateral adjustment of the cutting inserts along the axis of the cutterhead. Profile shape adjustments are made through the use of a cam device.

Abstract: A drilling tool, in particular for use in axially striking drive machines for drilling in rock, concrete or the like, which drilling tool is designed from both a vibration point of view by varying the abrupt changes in cross-section and from a drilling point of view by optimising the transport of the drilling dust. In order to arrange, from a vibration point of view, the abrupt changes in cross section, caused by the flute webs, in asymmetrically arranged axial positions, the inclination of the conveying flute constantly changes its size within a lead. Furthermore, the radial, tangential and axial force vector which acts on the drilling dust constantly changes its size, the radial force vector also changing its direction. In this way, the drilling dust is subjected to a constantly changing acceleration.

Abstract: A rotary cutter bar for a tree felling apparatus. The bar comprises a cylindrical rod having a plurality of raised cutting teeth on its surface. Each tooth is in the form of a short curved bar. The teeth are located on a plurality of equally spaced-apart, spiral paths extending about the cylindrical surface of the rod from one end to the other. The spiral paths extend at an angle of between 30.degree. and 60.degree. to the longitudinal axis of the rod.

Abstract: A cutting tool for a planer or similar machine is described. The tool comprises a flat blade having a straight cutting edge, a blade holder for holding said blade for rotation about an axis and means for locating said blade on said holder to have said blade present one cutting angle at one axial end and a different cutting angle at an opposite axial end, and to have the two opposite axial ends of the cutting edge of the blade located substantially at the same distance from the axis of rotation of the blade holder.

Abstract: The head (1) of the planing tool includes a plurality of helical grooves (2) of dovetail cross-section uniformly distributed over its periphery. Wedging devices (6) with knives (5) resting thereon are insertable sideways in the grooves. Disposed in each wedging device is a securing arrangement (7), actuation of which causes the associated wedging device-and-knife assembly to be pressed against the outwardly tapering sidewalls (17, 18) of the respective groove and held fast. Each of the knives has two opposite cutting edges (19, 20), either of which can be brought into operating position by reversing the knife. A second groove (16) runs parallel to each first groove (2) for receiving a guide component of a knife-aligning device. Owing to the helical configuration of the grooves and the precisely aligned cutting edges of the reusable knives disposed in the grooves, vibration-free machining of workpieces with planing widths of up to more than two meters is possible.

Abstract: In a cutter arbor for wood planing machines, continuous flexible non-adjustable pre-ground cutters, to be thrown away after wear, are inserted into helicoidal slots of the arbor itself. These disposable cutters are characterized in that they are thin and of constant cross section throughout their length. They are bowed and have a convex longitudinal edge and a concave longitudinal edge that are parallel to each other. The cutting edge is the convex longitudinal edge. In their undeformed condition, the cutters are uniplanar. The cutters have a cross-sectional area of about 10-15 mm.times.1-1.5 mm, and a radius of the bowed configuration of about 1 m.

Abstract: A method and tool for making tapered, layered plastic toothpicks from a solid plastic slab wherein a rapidly rotating tool having a single cutting edge configured to simultaneously cut and roll a thin film of plastic into a toothpick of the desired shape with each complete revolution is brought into contact with the plastic slab at a predetermined angle.

Abstract: A rotary cutter is provided with a spiral plane bit which comprises a mounting plate extending spirally in the axial direction with a constant width, the mounting plate being made in such a manner that it is spirally cut out of a hollow cylinder with the inner radius of the mounting plate and a bit edge member extending also spirally along one lateral margin of the mounting plate and being fastened thereto, wherein there are provided a plurality of fastening holes arranged in the mounting plate in the longitudinal direction thereof, through which fastening elements extend radially into a plurality of threaded holes so as to fasten the mounting plate together with the said bit edge member on a rotary shank.

Abstract: This disclosure relates to a planer provided with means for reducing the noise emitted by the blade-retaining shaft. The blades have a cutting edge projecting from the rotary surface of the shaft. Ahead of each blade with respect to the shaft direction of rotation there is arranged a deflecting surface which deflects the air flow over the cutting edge and has a free edge whose distance from the axis of rotation of the blade-retaining shaft is smaller than that of the cutting edge.

Abstract: A rotative, flaking, cutterhead in the form of a right regular cylinder with surface mounted helical shaped cutting blades. The cutterhead characterized by multiple and progressively increasing cutting blade circle diameters, said blades being closely grouped on said cylinder.

Abstract: A helical cutterhead for a wood planer for reducing noise level during planing by supressing vibration and sound radiation by having more than one knife blade engaged in the workpiece at any instant by satisfying the minimum condition of the formula L=.pi.D cot.phi./N is less than the workpiece width and in which L is the contact distance, D is the cutterhead diameter, N is the number of knife blades, and .phi. is the helix angle, and in which L is less than 4 inches.