摘要:
The invention relates to a method for producing for example a cylindrical surface (Fig. 10) which has a suitable surface structure of a predetermined geometry for applying material by thermal spraying. According to said method, a geometrically defined groove structure (Fig. 10) of minor depth and width is introduced into the surface, for example cylindrical surface, of a substrate to be coated, which surface is premachined to size using a tool which is preferably a follow-on tool (12; Fig. 1), by gradually bringing a groove cross-section to a desired measure. In order for the surface to be producible in series with a constant quality, the groove structure is introduced by first machining a basic groove (52B; Fig. 10) having a groove root width which is smaller than the groove root width of the finished groove (52). The groove, for example at least one flank (52-1 & 52-2) of the basic groove, is then machined in a non-cutting or cutting manner to produce an undercut groove profile, the groove structure produced by introduction being deformed in such a manner that the groove openings are made narrower by upsetting deformation.
摘要:
A band saw blade (10) having relatively extended pitch patterns of eight or more teeth exhibits relatively low noise and vibration during cutting operations, and substantially uniform tooh loading characteristics. The band saw blade (10) defines set patterns within each pitch pattern, and each set pattern is defined by an unset leading tooth (12, 18) followed by a plurality of offset trailing teeth (14, 16, 20, 22, 24, 26). Each tooth within each set pattern defines a pitch ("P") between the respective tooth and the preceding tooth in the cutting direction of the saw blade, and an accumulated pitch between the respective tooth and the preceding tooth of like set direction in the cutting direction of the saw blade. The ratio of pitch to accumulated pitch for each tooth within each set pattern increases from one tooth to the next in the direction opposite the cutting direction of the saw blade for substantially uniformly distributing the chip load over the teeth of the saw blade. In addition, during cutting operations, each tooth entering or exiting the work piece defines a different pitch or forcing frequency than does every other tooth simultaneously entering or exiting the workpiece, or successively entering or exiting the work piece, to thereby minimize noise and vibration during cutting operations.
摘要:
A reciprocating saw has a tooth form that decreases the cutting time of the saw blade and extends the life of the saw blade. The tooth height (26) is longer than conventional metal cutting reciprocating saws. Also, the tooth form has a larger gullet (34). The tooth rake angle remains substantially constant during the life of the saw blade.
摘要:
A saw blade, comprising a plurality of the composition patterns of first tooth groups (A) and second tooth groups (B) having a plurality of saw teeth, characterized in that the tooth height of the second tooth groups (B) is formed lower than that of the first tooth groups (A) and/or the set amount of the second tooth groups (B) is formed smaller than that of the first tooth groups A, and each of the first tooth groups (A) comprises at least one straight tooth.
摘要:
A structural band saw blade (10, 110) is defined by a plurality of teeth (12, 112) spaced relative to each other with variable height and set, and a back edge (46, 146) located on the opposite side of the blade relative to the cutting edge. Each tooth of the band saw blade defines a tip (40, 140), a rake face (42, 142) formed on one side of the tip, a primary clearance surface (44, 144) formed on the opposite side of the tip relative to the rake face, a secondary clearance surface (48, 148) adjacent to the primary surface, and a tertiary clearance surface (50, 150) adjacent to the secondary surface. The primary, secondary, and tertiary surfaces respectively define first, second and third acute relief angles (A, B, C) wherein the second angle is less than the first angle and the third angle is greater than both angles. A rake face protrusion (54, 154) is formed opposite the rake face relative to the tip and extends over one end of a weld zone (52, 152) and projects outwardly relative to a plane of the rake face. One or both the secondary and tertiary surfaces projects outwardly from the rake face plane opposite the protrusion to form an increased tooth thickness at the weld zone and prevent tooth strippage.
摘要:
Disclosed is a saw blade presenting a base body (1) on which are mounted uncrossed teeth with a cutting edge. The sawteeth (2) are disposed in successive groups of at least three teeth and symmetrically to the longitudinal medium plane of the base body (1). The teeth (2) of one group have a height rising from one tooth to the next and a width which parallely decreases.
摘要:
An einem Sägeblatt mit einer sich wiederholenden Gruppe (6) von Zähnen (1, 2, 3, ..), die aus einem ungeschränkten gephasten Führungszahn (1) mit einem im Vergleich zu seiner Breite kleineren, in der Mitte seiner Zahnspitze angeordneten wirksamen Schnittkantenabschnitt und einer vorzugsweise geraden Anzahl geschränkter Folgezähne (2, 3, ..) besteht, weist der Führungszahn (1) eine größere Zahnhöhe als jeder der Folgezähne (2, 3, ..) auf. Alle Folgezähne (2, 3, ..) weisen im Bereich ihrer Zahnspitzen (28) je eine untereinander unterschiedliche plastische Verformung durch Materialverlagerung in Bandlaufrichtung (24) auf. Jeder Folgezahn (2, 3, ..) weist durch die unterschiedliche plastische Verformung einerseits je einen vergrößerten positiven Spanwinkel (gamma 2 , gamma 3 , ..) und andererseits jeweils eine gegenüber dem Führungszahn (1) verringerte Zahnhöhe (h 2 , h 3 , ..) auf.
摘要:
The present invention provides a band saw blade 1 which has less difference in cut areas of workpieces with small diameters and cut areas of workpieces with large diameters, and is capable of weakening the cutting resistance and preventing unintentional bending of a cutting line and noise generation when a workpiece, which cannot easily be cut, is cut. The band saw blade 1 has, on the back surface 5 of a body 3 thereof, a wavy back surface 5 which is changed periodically or irregularly. A plurality of imaginary curves L1,L2 running parallel to the wavy undulation provided for the back surface 5 are formed opposite to the back surface. Moreover, a plurality of saw teeth 2,4,6,8,10 having tooth tips which substantially describe the imaginary curves L1,L2 are formed. Thus, constant areas can be cut by the band saw blade 1 regardless of the diameter of the workpieces required to be cut. Moreover, the cutting resistance can be weakened, and unintentional bending and noise can be prevented.
摘要:
The present invention relates to a saw blade with teeth, at least one of said teeth being set and said teeth have at least one continuously continuous sharp edge that is common to the teeth and, in a main plane of extension of the saw blade and prior to setting, has either a pure sinusoidal shape or a modified sinusoidal shape. The present invention also relates to a knife and a saw.