Abstract: A saw blade includes an elongated body extending along a longitudinal axis and having an elongated cutting edge. A first hard metal strip is attached to a first portion of the cutting edge and includes at least one first full hard metal cutting tooth that is set left at a first angle relative to a vertical axis of the body that is generally perpendicular to the longitudinal axis. A second hard metal strip attached to a second portion of the cutting edge and includes a second full hard metal cutting tooth that is set right at a second angle relative the vertical axis.

Abstract: A recip blade has a cutting edge defining a cutting direction and a repeating pattern of cutting teeth. Each repeating pattern includes (i) a leading tooth with respect to the cutting direction that includes a rake face defining a first rake angle that is negative, and (ii) a trailing tooth following the leading tooth with respect to the cutting direction that includes a rake face defining a second rake angle that is less negative than the first rake angle.

Abstract: A reciprocating saw blade includes an elongated blade body extending along a blade axis and having a rear end, a front end, a cutting edge having a plurality of teeth, a non-cutting edge opposite the cutting edge; and a tang coupled to the rear end and configured to be received in a blade holder of a powered reciprocating saw. The cutting edge includes inclined and declined cutting edge portions. The inclined cutting edge portion extends away from the blade axis and toward the front end at an acute first angle and extends from a first tooth to a second tooth. The first tooth is closer to the rear end and closer to the blade axis than the second tooth. The declined cutting edge portion extends toward the blade axis and toward the front end at an acute second angle that is greater than the first angle and extends from a third tooth to the first tooth. The first tooth is closer to the front end and closer to the blade axis than the third tooth.

Abstract: A bandsaw blade, including a main tooth group formed by nine sawteeth arranged in sequence, including three sub-tooth groups including a first sawtooth (1,4,7) of straight tooth, a second sawtooth (2,5,8) of left set tooth and a third sawtooth (3,6,9) of right set tooth. Each of sawteeth (1) and (4)-(6) has chamfers on two sides. Sawtooth (1) has a first height, sawtooth (4) has a second height and sawtooth (7) has a third height. Sawteeth (5) and (6) have the same fourth height. Sawteeth (2), (3), (8) and (9) have the same fifth height. The first through fifth heights are sequentially decreased. A top plane width of sawtooth (4) is larger than that of sawtooth (1). A top plane width of sawtooth (7) is larger than that of sawtooth (4). By using the bandsaw blade, more chips can be produced to reduce total cutting force and improve cutting efficiency.

Abstract: A saw blade includes a blade backer with a pair of side surfaces that extend substantially parallel to each other. An intermediate surface extends between the pair of side surfaces of the blade backer. A plurality of teeth extends from the intermediate surface. The plurality of teeth includes an asymmetrically ground tooth tip having a first rake face angle and a symmetrically ground tooth tip having a different, second rake face angle.

Abstract: A saw blade includes a body, saw blade teeth disposed on a first edge of the body, and a ramp element disposed on a second edge of the body, the second edge opposing the first edge. The ramp element is repeated along the longitudinal axis of the body to define a ramp element pattern. The ramp element includes a rise portion disposed proximal to a cutting direction of the saw blade and a relief portion disposed distal to the cutting direction of the saw blade. At least one of the rise portion and the relief portion of the ramp element defines a variable curve geometry.

Abstract: A saw blade includes a group A (group A1 [=straight tooth+the odd number of set teeth]+group A2 [=straight tooth+the even number of set teeth]) and a group B (group B1 [=straight tooth+the odd number of set teeth having opposite set-bending sides to those in the group A1]+group B2 [=straight tooth+the even number of set teeth having opposite set-bending sides to those in the group A2]). Wide and narrow set teeth are arranged so that a max/min ratio of the number of pitches between the narrow set teeth having identical set-bending side and set width is 1.8 or less, and a max/min ratio of the number of pitches between the wide set teeth having identical set-bending side set width is 2.7 or less.

Abstract: A system, a method and a cutting apparatus may use a bit to cut an object. The apparatus may have a bit connected to a cutting block on a cutting apparatus. The cutting apparatus may rotate about the object while the bit may advance into the object to cut the object. The cutting apparatus may have another bit located opposite to the bit to bevel an edge of the object. The cutting system may reduce point loads and/or provide an equalized load. The cutting system may reduce tool pressures when cutting a pipe and may provide extended tool and/or bit life.

Abstract: A saw blade, such as a metal-cutting band saw blade, has a cutting edge including a plurality of teeth. A plurality of the teeth include a tip, a clearance surface located on one side of the tip, a rake face located on an opposite side of the tip relative to the clearance surface, a gullet, and a substantially flat, linear, or non-curvilinear projection formed between the rake face and the gullet and projecting outwardly relative to the rake face. The projection is inclined at an acute angle relative to a plane extending between the tips of consecutive unset teeth. The projection defines an inner end adjacent to the rake face and an outer end adjacent to the gullet. The inner end is located at a depth below the tip of at least about 25/1000 inch, and the distance between the inner end and the outer end of the projection in a direction substantially parallel to the plane extending between the tips of at least two teeth is less than about 65/1000 inch.

Abstract: The present invention concerns a method for forming longitudinal undercut grooves in wood products. It also concerns a cutting blade (5, 12, 14, 15) that could be used in the method. According the invention a longitudinal straight groove (4) is formed in a wooden work piece (1) in a first step, for instance by means of a circular saw blade (2). In a second step the work piece (1) is moved pass the cutting blade (5, 12, 14, 15) to form an undercut groove (7, 8, 9, 10), which undercut groove is either symmetric or asymmetric. The cutting blade (5, 12, 14, 15) has a number of cutting heads (6). The cutting width of the cutting heads increase from a first cutting head (6a) to a last cutting head (6b).

Abstract: The present invention relates to a method for producing a perforated breakable multi well plate comprising providing a multi well plate, and generating one or more perforated section lines along the width and/or length of the multi well plate by puncturing the multi well plate with a slotted blade for each section line to be generated, wherein the slotted blade is rigid and sharpened along one edge and a series of slots extends from the sharpened edge into the blade, thereby forming a series of sharp and rigid teeth alternating with slots. The invention further relates to a press tool usable in the above method as well as a perforated breakable multi well plate.

Abstract: A band saw blade includes multiple saw teeth having a straight tooth and right and left set teeth, and also includes a gullet portion provided between the saw teeth. A rake surface of each of the saw teeth is provided with a chip curler portion formed into an arc shape at an entire range of approximately 90° to form a chip generated at the time of cutting a work into a small rolled shape before the chip comes into contact with a bottom portion of the gullet portion. A chip non-contact surface to be kept out of contact with the chip is formed to have either a flat surface or a convex surface between the chip curler portion and the bottom portion of the gullet portion, and a dent portion is formed between the chip non-contact surface and the gullet bottom portion, the dent portion recessed from the chip non-contact surface in an opposite direction to a moving direction of the band saw blade in order to increase a radius of a concave curved surface constituting a back side of the gullet bottom portion.

Abstract: A saw blade includes saw teeth arranged along a toothed side. The saw teeth have a pitch that increases from a clamped end of the saw blade to a saw blade tip. The saw teeth include a tooth support and a hard metal tooth joined to the tooth support. The saw teeth have a plurality of tooth supports having the same shape. Larger tooth spaces are provided for the increasing pitch between tooth supports having an identical shape.

Abstract: A saw blade (1) serves for sawing hollow profiles and form profiles. The saw blade (1) is especially designed as saw band, and it includes a base body (2) and a plurality of teeth (10). The teeth (10) are formed by protrusions (3) and inserts (4). The teeth (10) are arranged in a group being repeated along the saw blade (1). The group includes at least three unset chamfered teeth (10). The group includes a first tooth (C1) having two chamfers (FC11, FC12) being symmetric to the longitudinal center plane (9) of the saw blade (1), a second tooth (C2) having two chamfers (FC21, FC22) being non-symmetric to the longitudinal center plane (9) and a third tooth (C3) having two chamfers (FC31, FC32) being non-symmetric to the longitudinal center plane (9).

Abstract: A saw tool for a machine tool that includes at least two saw tooth sequences. Each of the saw tooth sequences has a plurality of saw teeth, wherein a toothless chip space is arranged between successive saw tooth sequences. The first saw tooth directly adjacent to a chip space has a tooth geometry differing from that of the other saw teeth within a saw tooth sequence.

Abstract: A reciprocating saw blade, for use in a portable power reciprocating saw including a chuck for releasably engaging the saw blade, includes a tang having an elongated axis and being engageable with the chuck for attaching the saw blade to the reciprocating saw. The saw further includes a blade portion having a cutting edge that defines a plurality of cutting teeth. The cutting teeth define a repeating pattern of successive groups of teeth. Each group of teeth is less than about a half inch in length, and includes a plurality of laterally offset teeth, at least one relatively high first tooth and at least one relatively low second tooth. Prior to tooth set, the at least one relatively high first tooth is at least about 0.002 inch higher than the at least one relatively low second tooth.

Abstract: The invention relates to a tool for parting, in particular for sawing, having a carrier blade that has a toothing portion having a finite, geometrically determined toothing, having a receiver for fixing to a tool spindle of a power tool, which tool spindle can be driven in oscillation about its longitudinal axis, the toothing being disposed at a distance from the receiver and being configured to be advanced perpendicularly in relation to the longitudinal axis, wherein the toothing is realized in a non-uniform manner along the toothing portion, the toothing portion being provided with a middle region and having end regions that adjoin the latter and that are provided with strengthened corner teeth.

Abstract: A band saw blade has a plurality of teeth defining a pitch pattern and first and second set patterns within each pitch pattern. The first set pattern includes a plurality of offset teeth that are each offset at approximately the same set magnitude as every other set tooth within the first set pattern. The second set pattern includes a plurality of first offset teeth that are each offset at approximately a first set magnitude, and a plurality of second set teeth that are each offset at approximately a second set magnitude that is greater than the first set magnitude.

Abstract: A saw blade, such as a bandsaw blade, has a toothform pattern that includes a raker tooth and set teeth. The bandsaw blade teeth are configured such that a distance from a tooth point of the raker tooth to a tooth point of an immediately preceding set tooth is the smallest tooth spacing in the saw blade toothform pattern. With the use of a smaller spacing, the raker tooth removes the smallest chip thickness from a work piece relative to the chip thicknesses removed by the set teeth. This reduces the amount of load imposed on the raker tooth point. In one arrangement, in order to balance the forces on either side of the blade during operation, the saw blade is configured such that an accumulated pitch of the tooth points set to a first side of the blade are substantially equal to the accumulated pitch of the tooth points set to a second opposing side of the blade.

Abstract: A saw blade (5) for a machine tool (1) with oscillating drive includes toothing with teeth (7) whose tips lie on an arc (9a, 9b), with the centers Z2 of the arc (9a, 9b) lying outside of a center of rotation Z1 of the saw blade (5).

Abstract: A sabre saw blade, in particular for metal applications, with a serration that has at least one first tooth spacing and one second tooth spacing, characterized in that in at least a partial region with three first and three second tooth spacings which are always disposed in a directly alternating sequence, the serration has at least two tooth shapes, and at least one tooth is embodied as a roof-shaped tooth having a first tooth back portion with a first clearance angle and a second tooth back portion with a second clearance angle with said tooth back portions being arranged at an obtuse angle and one behind the other in a cutting movement direction, and at least one tooth is embodied as a standard tooth with a straight tooth back, arranged alternatingly, wherein the first tooth spacing is between 10% and 30% shorter and the second tooth spacing is between 10% and 30% wider than 1.81 mm.

Abstract: A saw blade includes left and right set teeth which are set in a lateral direction, as viewed in a cuffing direction of cutting teeth. The left and right set teeth include dovetail shaped set teeth, each having a tooth tip formed into a dovetail shape gradually enlarged in the lateral direction, respectively; and a straight tooth, which is not set. The straight tooth includes a dovetail shaped straight tooth having a tooth tip formed into a dovetail shape gradually enlarged in the lateral direction. In the straight tooth, inclinations are formed on both of left and right ends at the tooth tip, which is formed into the dovetail shape gradually enlarged in the lateral direction.

Abstract: A saw blade for improved cutting efficiency includes teeth having depths and tip-to-tip spacings that vary as a function of distance from an end of the blade to the tooth, the teeth extending from the plane of the blade at alternating angles and having a recurring pattern of alternate tip beveling.

Abstract: A saw blade in which a tooth pattern comprising a first teeth group A and a second teeth group B each having a plurality of set teeth is repeated, wherein the saw blade has at least one or both of the following conditions: a condition in which a tooth height of the second teeth group B is lower than that of the first teeth group A, and a condition in which a set amount of the second teeth group B is smaller than that of the first teeth group A, and wherein the first teeth group A has at least one spur tooth.

Abstract: Saw blade (1) with evolutionary tooth profile and different pitch, characterized in that said triple-bevel blade is divided into sectors (2), themselves divided into portions (3), each portion (3) having a different pitch which increases progressively from portion (3) to portion (3), the depth of the teeth also varying over several portions.

Abstract: A saw blade (4) for a machine operating with adjacent saw teeth traveling in two opposite and parallel directions comprises a blade substrate, teeth (16), and tooth necks (30) formed at the periphery of the substrate for holding the teeth (16) in place. Each tooth neck (30) has a protection surface (34), which is located in a plane that is parallel to the plane of the blade substrate (8), for protecting the tooth (16) against impact with any part of said adjacent saw blade. Each tooth (16) is located on the respective neck (30) in such a way that the tooth (16) is displaced from the protection surface (34) and from the adjacent saw blade in a direction normal to the plane of the protection surface (34).

Abstract: A saw blade, such as a bandsaw blade, has a toothform pattern that includes a raker tooth and set teeth. The bandsaw blade teeth are configured such that a distance from a tooth point of the raker tooth to a tooth point of an immediately preceding set tooth is the smallest tooth spacing in the saw blade toothform pattern. With the use of a smaller spacing, the raker tooth removes the smallest chip thickness from a work piece relative to the chip thicknesses removed by the set teeth. This reduces the amount of load imposed on the raker tooth point. In one arrangement, in order to balance the forces on either side of the blade during operation, the saw blade is configured such that an accumulated pitch of the tooth points set to a first side of the blade are substantially equal to the accumulated pitch of the tooth points set to a second opposing side of the blade.

Abstract: A bimetal saw band which is suitable for cutting materials of high hardness and wear resistance at high cutting speeds and with a reduced consumption of coolant is disclosed. The saw band includes a support band with from 0.20 to 0.45% of carbon, from 0.2 to 0.6% of silicon, from 0.5 to 1.8% of manganese, from 0.1 to 3.5% of molybdenum, from 1.0 to 5.0% of chromium, from 0.5 to 1.5% of nickel, from 0.1 to 1.0% of copper, from 0.1 to 2.0% of tungsten, from 0.1 to 0.5% of vanadium, from 0.01 to 0.30% of niobium and/or tantalum and less than 0.2% of cobalt, and the remainder iron including melting-related impurities, with the tungsten, vanadium and niobium/tantalum contents matched to one another. The saw includes hardmetal tips including at least 75% of tungsten carbide and 5 to 15% of cobalt, as well as grain stabilizers with a grain size of less than 5 ?m.

Abstract: A bandsaw blade includes a blade beam carrying a plurality of cutting teeth separated by gullets. A clearance angle of the teeth is smaller than 35°, and the back of a leading tooth has a convex transition to a gullet. The radius of the gullet is larger than ½ of the depth of the gullet.

Abstract: A band saw blade comprising a plurality of teeth, wherein each tooth comprises a tip; a rake face formed on one side of the tip; a primary clearance surface formed on an opposite side of the tip relative to the rake face; a secondary clearance surface formed on an opposite side of the primary clearance surface relative to the tip; and a gullet located on an opposite side of the rake face relative to the tip and defining a depth (D) between a base surface of the gullet and the tip. Each tooth further defines a first gullet radius (R1) located between the gullet and the secondary clearance surface; a second gullet radius (R2) extending between a base surface of the gullet and the rake face; and a pitch (P) between the respective tooth and a preceding tooth. In each tooth, R2>D>RQ, and D/P is between about 25% and 35%.

Abstract: A saw blade is formed from a blank which has an edge. Inserts, such as tungsten carbide are inserted in apertures in the blank and a finishing cut is then made along the line to produce a series of teeth, each having a point within the body of the insert, and thus formed by the relatively hard material of the insert. Fingers of the inserts provide a root which holds the insert in position during use.

Abstract: A metal cutting band saw blade has a plurality of cutting teeth defining a cutting direction, and a repeating tooth pattern of between 3 and 7 teeth. Each tooth defines a laterally-extending upper surface having a width and a height with respect to the back edge of the blade, and side surfaces extending laterally and downwardly on opposite sides of the upper surface relative to each other at acute angles relative to the upper surface. The teeth located rearwardly of the first tooth with respect to the cutting direction of the saw blade define progressively lower heights and progressively smaller acute angles of the side surfaces, and the widths of the upper surfaces of these teeth are greater than the width of the upper surface of the respective first tooth.

Abstract: A saw blade for power tools, in particular for power reciprocating saws, includes a blade back (11) and a toothing (12) extending along the lower edge of the blade back and having many saw teeth (13) lined up in succession, In order to increase the blade life and service life of the saw blade, especially in a Thick, stable embodiment, the saw teeth (13) in successive portions (a, b) of the toothing (12) have the same tooth width (az, bz), which, however, differs from that of the saw teeth (13) in the preceding or the succeeding portion (b, a) of the toothing (12).

Abstract: A saw blade that includes a bandsaw body and a plurality of unset teeth having a generally uniform height. The teeth are disposed on the bandsaw body. At least some of the teeth have a cutting extension that extends above the uniform height of the teeth.

Abstract: A band saw blade includes a plurality of set teeth which are formed in a variable pitch. In that construction, a bending lengths of each of the set teeth at a setting and bending position or at a bendingly setting position are substantially equal to each other.

Abstract: A circular saw blade includes a generally circular blade portion and a plurality of spaced apart teeth attached to the circular blade portion. Each tooth extends outwardly and upwardly from the circular blade portion. Each tooth has a leading edge and a dimple formed therein proximate to a leading edge. Each tooth has a positive rake. Preferably the positive rake is in a range of between about 20 and about 45 degrees.

Abstract: A bandsaw blade includes a blade beam carrying a plurality of cutting teeth separated by gullets. A clearance angle of the teeth is smaller than 35°, and the back of a leading tooth has a convex transition to a gullet. The radius of the gullet is larger than ½ of the depth of the gullet.

Abstract: A disk cutter including an annular disk-shaped base adapted to be driven about an axis of rotation; a plurality of tip supports formed along the outer circumference of the base integrally therewith so that a gullet is defined between adjacent ones of the tip supports; and a plurality of hardened cutter inserts respectively fixed to the tip supports. The base is imaginarily divided into a plurality of segments by radially extending lines. The hardened cutter inserts in each segment are arranged symmetrically with respect to a circumferential center line of the segment so that the pitches of the hardened cutter inserts on each side of the circumferential center line are stepwise increased in a direction from the circumferential center line toward the radially extending line on the same side.

Abstract: A saw blade with teeth has a tooth point with a tooth edge (E1, E2). A tooth face is on the front side of the tooth and a tooth back is behind the tooth edge. A tooth gullet (G1, G2) is defined as the space between the tooth edges of two adjacent teeth. The tooth edge (E1, E2) extends between a right hand tooth corner (A1, A2) and a left-hand tooth corner (B1, B2). A first tooth gullet, disposed between the tooth edge (E1) of a first tooth (T1) and the tooth edge (E2) of the next tooth (T2) is beveled. A sloping surface (S1) extends from the first tooth edge (E1) in the rear end of the first tooth gullet downwardly along the tooth face and to at least the tooth bottom.

Abstract: A tool for machining workpieces, having a parent body which can be expanded at least zonally, having at least one geometrically defined cutting edge projecting beyond a circumferential surface of the tool, and having a setting device influencing the radial distance of the cutting edge from the center axis of the tool. The setting device has a setting element, and an adjusting device which sets the degree of bending of the setting element. The setting element is inserted into the parent body of the tool in such a way that, when the bending of the setting element is varied, the radial distance of the cutting edge is varied.

Abstract: A structural band saw blade is provided having a cutting edge defined by a plurality of teeth spaced relative to each other, and a back edge located on an opposite side of the blade relative to the cutting edge. Each tooth of the band saw blade defines a tip, a rake face formed on one side of the tip, a primary clearance surface formed on the opposite side of the tip relative to the rake face, a secondary clearance surface formed on the opposite side of the primary clearance surface relative to the tip, and a tertiary clearance surface formed on the opposite side of the secondary clearance surface relative to the first clearance surface. The primary clearance surface defines a first acute relief angle, the secondary clearance surface defines a second acute relief angle less than the first acute relief angle, and the tertiary clearance surface defines a tertiary acute relief angle greater than the first and second relief angles.

Abstract: A disk-shaped tool, in particular, a circular saw blade, includes cutting teeth (11, 12, 13), in which the cutting teeth (12, 13, 14) are divided into groups (11). Each first tooth (12) of a group (11), in the cutting direction (15), protrudes radially farther outward with its cutting edge than the following tooth or teeth (13, 14) of the group (11).

Abstract: Disclosed is a cutting tool with an asymmetric tooth form, and a method for making the same. Such tooth forms are useful for cutting tools such as band saw blades, circular saws, hacksaws and other saw type products. The tooth form of this invention can improve precision over prior art tooth forms by reducing manufacturing variability. The improved precision provides more consistent performance and a better quality of the cut surface. The non-symmetrical form ground tooth profiles cut designated chip profiles and thereby cut specific portions of the kerf much like a broaching application. This non-symmetrical ground tooth profile can alter the distribution of the downfeed cutting force allowing for more aggressive cutting or conversely, cutting at the desired rate with less downfeed pressure.

Abstract: A circular saw blade includes a generally circular blade portion and a plurality of spaced apart teeth attached to the circular blade portion. Each tooth extends outwardly and upwardly from the circular blade portion. Each tooth has a leading edge and a dimple formed therein proximate to a leading edge. Each tooth has a positive rake. Preferably the positive rake is in a range of between about 20 and about 45 degrees.

Abstract: A cutting tool for separating and formatting of sheet materials has a rotationally driven support body having cutting teeth arranged about a circumference of the support body. The cutting teeth have a tooth profile with a radially outwardly positioned front-cutting area with a separating cutting edge and a formatting area with main cutting edges determining the cutting width of the cutting tool. The tooth profile further has a transition area located radially between the front-cutting area and the formatting area. The main cutting edges in the formatting area are arranged radially separately from the separating cutting edges of the front-cutting area by the transition area, wherein the transition area has transition cutting edges adjoining the cutting edges and angled relative to the separating cutting edges toward a radial center axis of the cutting tool. The front-cutting area is symmetrical relative to the radial center axis of the cutting tool.

Abstract: A saw blade having an annular body constructed of a first material having a perimeter where a plurality of teeth are formed into the perimeter. A plurality of carbide inserts, including a cutting edge, affixed to a respective tooth. The cutting edge includes a peak formed by an angle, a first side of the angle being shorter than a second side of the angle, wherein each adjacent tooth includes the peak being disposed on opposing side of the cutting edge.

Abstract: A method of preventing a tooth from continuously breaking in a band saw blade, comprises the steps of: moving the band saw blade to a longitudinal direction and moving the band saw blade to a cutting direction perpendicular to the moving direction of the band saw blade so as to cut a work; bringing a projecting portion disposed at a rear position of a surface of relief at the back of a tip in a saw tooth broken into contact with a bottom portion of a cutting groove in the work when the tooth breaking is generated in the saw tooth of the band saw blade; and limiting a cutting amount of the following saw tooth, thereby preventing the following saw tooth from breaking.

Abstract: A saw blade with teeth having a tooth point with a tooth edge (E1, E2), a tooth face on the front side of the tooth as viewed in the direction of sawing, a tooth back behind the tooth edge, and a tooth bottom between the tooth face on each tooth and the tooth back on the next tooth in front of said each tooth, and tooth gullets, wherein a tooth gullet (G1, G2) is defined as the space between the tooth edges of two adjacent teeth, said saw blade having two planar sides; a right hand side (R) and a left hand side (L) when the saw blade is viewed obliquely from above in the direction of sawing, wherein said tooth edge (E1, E2) extends between a right hand tooth corner (A1, A2) and a left hand tooth corner (B1, B2) with reference to said viewing direction, comprising the saw blade within a region of a first tooth gullet between the tooth edge (E1) of a first tooth (T1) and the tooth edge (E2) of the next tooth (T2) in front of said first tooth is bevelled such that the saw blade surface (S1) within said region sl

Abstract: A saw blade is constituted with a unset tooth, a plurality of left-set teeth and a plurality of right-set teeth. In the construction, the saw blade has the unset tooth, a plurality of left-set teeth and a plurality of right-set teeth as one group. A plurality of set widths of the plurality of set teeth are formed in the saw blade. A relief angle of a tip of the unset tooth is equal to or greater than a relief angle of a tip of the set tooth having the smallest set width. Furthermore, the relief angle of a tip becomes small in accordance that the set width becomes greater.

Abstract: A metal cutting band saw blade has a plurality of cutting teeth defining a cutting direction, and a repeating tooth pattern of between 3 and 7 teeth. Each tooth defines a laterally-extending upper surface having a width and a height with respect to the back edge of the blade, and side surfaces extending laterally and downwardly on opposite sides of the upper surface relative to each other at acute angles relative to the upper surface. The teeth located rearwardly of the first tooth with respect to the cutting direction of the saw blade define progressively lower heights and progressively smaller acute angles of the side surfaces, and the widths of the upper surfaces of these teeth are greater than the width of the upper surface of the respective first tooth.