JP2009233782A - Saw blade - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a saw blade manufacturable at low cost and reducible in cutting noise. <P>SOLUTION: This saw blade includes a plurality of saw teeth 19S, 19L, 19R for cutting the entire width W of a cutting groove 17 formed in a work WP for a plurality of divided widths W1, W2, W3, respectively, when the work WP is cut by the saw blade 15. The saw blade has, as set patterns, a plurality of saw teeth 19S, 19L, 19R corresponding to the divided widths W1, W2, W3, respectively. An addendum pitch pattern PT formed in predetermined repeated patterns is formed in the saw blade 15 by having the plurality of set patterns. Where pitches of the saw teeth with the same functions for cutting the same divided widths in the plurality of set patterns formed in the addendum pitch pattern PT are addendum functional pitches, the addendum functional pitches are different from each other. The set patterns includes right and left set teeth 19L, 19R set in the lateral direction. The saw tooth pitches P1-P9 in the set pattern are different from one another. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a saw blade such as a band saw blade, a circular saw blade, a hax saw, and the like. More specifically, the cutting noise can be reduced and the manufacturing cost can be easily reduced while maintaining the cutting performance. Related to saw blades.

  Conventionally, a band saw machine has been used as a cutting device for cutting, for example, a large metal workpiece. The band saw blade used in this band saw machine is often a so-called bimetal band saw blade that uses high-speed tool steel or cemented carbide as the cutting edge and tough alloy steel as the body. .

  In terms of shape, variable pitch saw blades that reduce cutting noise and multiple crest widths are set as unequal pitches with multiple sawtooth tips. Tooth with a smaller distance) is set to a larger crest width, cutting chips are subdivided, and kerf-dispersed tooth saw blades that reduce cutting resistance acting on each saw tooth have been put to practical use. .

  Further, so-called carbide saw blades in which a cemented carbide tip is joined to the tooth tip of a saw tooth are roughly classified into two types. One is compared to the vicinity of the cemented carbide tip joint, such as a clam swing type cemented carbide saw blade that has been bent after grinding the tooth tip, and a shamisen repellent (or pigeon tail feather). There is a batachisari type cemented carbide saw blade that has been polished into a trapezoidal shape with a wider tooth tip.

  In general, a saw blade that has been subjected to a set process by bending the tooth tip in the left-right direction is subjected to cutting force on the side opposite to the set direction when the workpiece is cut. A tool mark called a ghost mark appears on the surface. In addition, in the Bachisari type, since the teeth are set out on both the left and right sides with one tooth, the cutting resistance from the side is offset, and the degree to which the saw blade is shaken is small, and a clean cut surface is obtained. There is.

  As described above, various high-performance saw blades have been put into practical use, and the development competition for further high-performance saw blades has intensified. The competition for development is not only in terms of performance, but also in terms of manufacturing costs, and low cost and high performance are the keywords.

  On the other hand, recently, environmental problems have been highlighted, and cutting work with a band saw machine has a problem of cutting noise, and it is necessary to consider noise pollution affecting not only the cutting operator but also neighboring residents. Therefore, low cost, high performance, and low cutting noise can be said to be necessary conditions for the saw blade.

For example, Patent Document 1 is a prior example of the clad swing-type band saw blade, and Patent Document 2 is a prior example of a Batachisari type band saw blade.
JP-A-11-19822 Japanese Patent No. 3370166

  The saw blade 1 described in Patent Document 1 has a configuration as shown in FIG. That is, the saw blade 1 includes straight teeth 5 that are not bent in the thickness direction of the body portion 3, left set teeth 7A and 7B that are bent in the left direction, and right It has right set teeth 9A and 9B that are bent in the direction. The left and right set teeth 7A, 7B; 9A, 9B swing out in the left-right direction (climbing amount) is substantially constant, and the tooth height from the reference position to the tooth tip is also substantially constant in each saw tooth. The tooth tip pitch of each saw tooth is set to P1 to P5.

  That is, the saw blade 1 includes five teeth of a straight tooth 5, a left set tooth 7A, 7B, and a right set tooth 9A, 9B as a group, and these five teeth are a pattern that is sequentially repeated when a workpiece is cut. The tooth tip pitch pattern is configured. In the saw tooth, the straight tooth 5 serves to cut the central portion in the width direction of the cutting groove formed when the workpiece is cut by the saw blade 1, and the left set teeth 7A and 7B are the cutting teeth. It functions to cut the left part of the groove. The right set teeth 9A and 9B cut the right portion of the cutting groove.

  In the saw blade 1, the tooth tip shape includes three types of straight teeth, left set teeth, and right set teeth, and the set patterns include the straight teeth 5, left and right set teeth 7A, 7B; It is the structure provided with 5 teeth of 9A and 9B. That is, in the saw blade 1, the number of saw teeth of the tip pitch pattern and the number of saw teeth of the set pattern are both equal to five. The length of the tooth tip pitch pattern is represented by (P1 + P2 + P3 + P4 + P5), which is 1 when the number of saw teeth included in the tooth tip pitch pattern is divided by the number of saw teeth included in the clam pattern.

  Therefore, when the workpiece is cut by the saw blade 1, the tooth tip pitch pattern repeats the same cutting vibration at a short monotonous period corresponding to (P1 + P2 + P3 + P4 + P5). In this way, although the tooth tip pitch pattern can be configured with a short monotonous cycle, the manufacturing cost of the saw blade can be suppressed relatively inexpensively, but the same cutting vibration is generated at a monotonic cycle, so that cutting is possible. Further improvements are required to reduce noise.

  The configuration of the saw blade 11 described in Patent Document 2 is as shown in FIG. That is, the saw blade 11 has four types of teeth 13A, 13B, 13C, and 13D in which the corner portion of the bee-type carbide chip is chamfered on the tip side of the saw tooth formed without bending the left and right claws. It is the structure provided with. The carbide tips 13A, 13B, 13C, and 13D are formed such that the smaller the tooth height, the larger the set width, and the entire width of the cutting groove when being cut by the saw blade 11 is divided into seven widths for cutting. Is done.

  In the saw blade 11, the tooth tip pitch of each saw tooth is composed of a tooth tip pitch pattern in which 9 pitches arranged in P1 to P9 are repeated as one group, and the set pattern is the carbide tips 13A, 13D, 13B, 13D. , 13C, and 13D, 6 teeth are repeated as one group. Here, since the pitch number of 9 is divided by the number of teeth of the clam pattern of 6 and does not become an integer, a cycle of repeated teeth can be obtained with 54 teeth that is the least common multiple (6 × 9 = 54) (Patent Document) 2).

  That is, in the saw blade 11 described in Patent Document 2, since the same cutting vibration is generated at a period corresponding to the length of 54 teeth as one group, cutting noise can be reduced. However, in the configuration in which 54 teeth are repeated as one group, the pattern of one group is too long, leading to a high manufacturing cost of the saw blade 11.

  By the way, if the average pitch of the tooth tip in the saw blade is within the common technical range of the saw blade, for example, if the pitch includes two teeth in 1 inch (25.4 mm), the tooth tip pitch is 12.7 mm, and 54 teeth. Then, 12.7 × 54 = 685.8 mm, which is too long. Even if half is 27, 12.7 × 27 = 342.9 mm, which is too long. Moreover, since the tooth tip shape is composed of four types of carbide tips 13A to 13D, the processing becomes complicated, and this also leads to an increase in the manufacturing cost of the saw blade 11.

  The present invention has been made in view of the problems of the conventional saw blade as described above. When the workpiece is cut by the saw blade, the entire width of the cutting groove formed in the workpiece is divided into a plurality of divided widths. A saw blade provided with a plurality of saw blades to be cut by cutting, comprising a plurality of saw teeth corresponding to each of the divided widths as a set pattern, and a plurality of the set patterns for providing a constant repetitive pattern in the saw blade. Each of the different functions corresponding to each divided width is provided with a tip pitch pattern, and the same function sawtooth pitch cutting the same division width in the plurality of clam patterns provided in the tooth tip pitch pattern is the tooth tip function pitch. The tooth tip functional pitches of the saw teeth are different pitches in the tooth tip pitch pattern.

  Further, when the workpiece is cut by the saw blade, the saw blade is provided with a plurality of saw teeth for dividing and cutting the entire width of the cutting groove formed in the workpiece for each of the plurality of divided widths. A plurality of saw teeth corresponding to each as a set pattern, and by providing a plurality of the set patterns, a tooth tip pitch pattern that becomes a constant repetitive pattern in the saw blade, a plurality of set patterns provided in the tooth tip pitch pattern If the pitch of the saw blade of the same function that cuts the same division width is the tooth tip function pitch, the tooth tip function pitch of each saw tooth having a different function corresponding to each division width is a different pitch, and the tooth tip function of the same function The pitch includes the same pitch dimension.

  Further, when the workpiece is cut by the saw blade, the saw blade is provided with a plurality of saw teeth for dividing and cutting the entire width of the cutting groove formed in the workpiece for each of the plurality of divided widths. A plurality of saw teeth corresponding to each as a set pattern, and by providing a plurality of the set patterns, a tooth tip pitch pattern that becomes a constant repetitive pattern in the saw blade, a plurality of set patterns provided in the tooth tip pitch pattern When the pitch of the saw blade of the same function that cuts the same divided width is the tooth tip functional pitch, the tooth tip functional pitch of each saw tooth having a different function corresponding to each divided width is a different pitch in the tooth tip pitch pattern, The set pattern includes left and right set teeth that are set in the left and right direction.

  Further, when the workpiece is cut by the saw blade, the saw blade is provided with a plurality of saw teeth for dividing and cutting the entire width of the cutting groove formed in the workpiece for each of the plurality of divided widths. A plurality of saw teeth corresponding to each as a set pattern, and by providing a plurality of the set patterns, a tooth tip pitch pattern that becomes a constant repetitive pattern in the saw blade, a plurality of set patterns provided in the tooth tip pitch pattern If the pitch of the saw blade of the same function that cuts the same division width is the tooth tip function pitch, the tooth tip function pitch of each saw tooth having a different function corresponding to each division width is a different pitch, and the tooth tip function of the same function The pitch includes the same pitch dimension, and the set pattern includes left and right set teeth that are set in the left and right direction. It is an.

  Further, when the workpiece is cut by the saw blade, the saw blade is provided with a plurality of saw teeth for dividing and cutting the entire width of the cutting groove formed in the workpiece for each of the plurality of divided widths. A plurality of saw teeth corresponding to each as a set pattern, and by providing a plurality of the set patterns, a tooth tip pitch pattern that becomes a constant repetitive pattern in the saw blade, a plurality of set patterns provided in the tooth tip pitch pattern When the pitch of the saw blade of the same function that cuts the same divided width is the tooth tip functional pitch, the tooth tip functional pitch of each saw tooth having a different function corresponding to each divided width is a different pitch in the tooth tip pitch pattern, The set pattern includes bee-type set teeth.

  Further, when the workpiece is cut by the saw blade, the saw blade is provided with a plurality of saw teeth for dividing and cutting the entire width of the cutting groove formed in the workpiece for each of the plurality of divided widths. A plurality of saw teeth corresponding to each as a set pattern, and by providing a plurality of the set patterns, a tooth tip pitch pattern that becomes a constant repetitive pattern in the saw blade, a plurality of set patterns provided in the tooth tip pitch pattern If the pitch of the saw blade of the same function that cuts the same division width is the tooth tip function pitch, the tooth tip function pitch of each saw tooth having a different function corresponding to each division width is a different pitch, and the tooth tip function of the same function The pitch includes the same pitch dimension, and the set pattern includes bee-type set teeth.

  In the saw blade described above, the sawtooth pitch in the set pattern is different from each other.

  According to the present invention, it is possible to reduce the number of saw teeth included in a set pattern and shorten the tooth tip pitch pattern that is a constant repetitive pattern, and to reduce the manufacturing cost. It is possible to reduce cutting noise due to generation of cutting vibration during cutting.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to components having the same functions as those of the above-described conventional saw blade, and redundant description will be omitted.

  Referring to FIG. 1, when the saw blade 15 according to the embodiment of the present invention cuts the workpiece WP with the saw blade 15, the entire width W of the cutting groove 17 formed in the workpiece WP is set to a plurality of widths W. The body 3 is provided with a plurality of saw teeth 19S, 19R, and 19L that are divided and divided for each of the divided widths W1, W2, and W3.

  The saw-tooth 19S is a straight tooth (19S) that does not perform a bending process in the left-right direction, and cuts a portion of the central portion of the cutting groove 17 with the divided width W1. The saw blade 19R is a right set tooth (19R) that has been subjected to a set bending process in the right direction, and cuts the portion of the right split width W2 in the cutting groove 17. The saw tooth 19L is a left set tooth (19L) that has been bent in the left direction, and cuts the left divided width W3 of the cutting groove 17.

  As already understood, a plurality of saw teeth having different cutting edge functions for cutting the entire width W of the cutting groove 17 by dividing the entire width W into a plurality of divided widths W1, W2, W3 are straight teeth 19S, right There are three types of set teeth 19R and left set teeth 19L, which are repeatedly arranged. That is, the straight teeth 19S, the right set teeth 19R, and the left set teeth 19L are provided with a plurality of saw teeth corresponding to each of the divided widths W1, W2, and W3 as a set pattern, and the number of teeth included in the set pattern is as follows. 3.

  The straight teeth 19S, the right set teeth 19R, and the left set teeth 19L are sequentially arranged with a pitch pattern of tooth tip pitches P1 to P9. The pitch patterns of the tooth tip pitches P1 to P9 are tooth tip pitch patterns, and the number of teeth of the saw tooth included in the tooth tip pitch pattern is nine. Accordingly, when the number of teeth 9 included in the tooth tip pitch pattern is divided by the number of teeth 3 included in the set pattern, 3 is obtained as an integer.

  The tooth tip pitch pattern is an arrangement pattern formed by repeating the arrangement of the straight teeth 19S, the right set teeth 19R, and the left set teeth 19L as the set patterns several times. Is in a relationship of P1 ≠ P2 ≠ P3 ≠ P4 ≠ P5 ≠ P6 ≠ P7 ≠ P8 ≠ P9, and the sizes of the tooth tip pitches P1 to P9 are different. With the above configuration, the length PT of the tooth tip pitch is (PT = P1 + P2 + P3 + P4 + P5 + P6 + P7 + P8 + P9). Therefore, as a technical common sense in the saw blade, the length of the tooth tip pitch PT is extremely short as compared with the case of Patent Document 2.

  If the saw blade pitch of the same function that cuts the same division width in the saw blade 15 is a tooth tip function pitch, the tooth tip function pitch of the straight tooth 19S is represented by three types of PS1, PS2, and PS3, and the right set tooth The 19R tooth tip function pitch is represented by three types, PR1, PR2, and PR3. The tooth tip function pitch of the left set teeth 19L is represented by three types PL1, PL2 and PL3. The tooth tip functional pitches PS1, PS2 and PS3 of the straight teeth 19S are dimensions unique to the tooth tip functional pitch group (PS group) of the straight teeth 19S, and are different dimensions. The tooth tip function pitches PR1, PR2, and PR3 of the right set teeth 19R are dimensions unique to the tip set function pitch group (PR group) of the right set teeth 19R, and are different dimensions. Further, the tooth tip function pitches PL1, PL2, PL3 of the left set teeth 19L are dimensions inherent to the tip set function pitch group (PL group) of the left set teeth 19L, and are different dimensions.

  Each tooth tip function pitch PS1, PS2, PS3; PR1, PR2, PR3; PL1, PL2, PL3 in each tooth tip function pitch group (PS group, PR group, PL group) is a tooth tip function pitch group. It is a unique dimension, and the same pitch dimension as the tooth tip function pitches PS1 to PS3 included in the tooth tip function pitch group (PS group) is included in the other tooth tip function pitch groups (PR group, PL group). In addition, the same pitch dimensions as the addendum function pitches PR1 to PR3 included in the addendum function pitch group (PR group) are not included in the other addendum function pitch groups (PS group, PL group). . Similarly, the same pitch dimensions as the tooth tip function pitch groups PL1 to PL3 included in the tooth tip function pitch group (PL group) are not included in the other tooth tip function pitch groups (PS group, PR group). It is. That is, the tooth tip function pitch in each tooth tip function pitch group is a different pitch in the tooth tip pitch pattern.

  As described above, the respective tooth tip function pitch groups PS1 to PS3; PR1 to PR3; PL1 to PL3 of the saw teeth 19S, 19R, and 19L having different functions depending on the division widths in the cutting groove have unique dimensions. In addition, each tooth tip function pitch group (PS group, PR group, PL group) does not include the tooth tip function pitches belonging to other tooth tip function pitch groups, so that the work by the saw blade 15 is performed. It is possible to suppress the resonance of the cutting vibration periodically generated by the repetition of the clam pattern during the cutting action of the piece WP and to suppress the cutting noise.

  That is, when the workpiece WP is cut by the saw blade 15 having the above-described configuration, the straight tooth 19S cuts the division width W1 at the center of the cutting groove 17, and the right and left division widths W2 and W3 are the right set teeth 19R and left. Each set of teeth 19L cuts. At this time, since the saw blade 15 repeatedly acts on the workpiece WP with the tooth tip pitch pattern PT, the same cutting vibration is generated at a relatively short period corresponding to the length of the saw blade pitch pattern PT. Become.

  And the cutting noise resulting from this cutting vibration will be generated. However, the tooth tip pitches P1 to P9 of the plurality of saw teeth included in the tooth tip pitch pattern PT have different dimensions, and the tooth tip function pitch groups PS1 to PS3, PR1 to PR3, and PL1 to PL3 respectively. Since the pitch dimensions are unique and are different from each other, resonance in a sound range that is likely to cause cutting noise is effectively suppressed, and generation of cutting noise can be more effectively suppressed.

  That is, according to the saw blade 15, the number of saw teeth included in the set pattern is set to 3, and the length of the tooth tip pitch pattern PT is relatively short, for example, an average pitch of 12.7 mm × 9 = 14.3 mm and about 200 mm. Since it can be suppressed to the following, the configuration is simpler than the case where the number of saw teeth included in the set pattern is 4, and the tooth pitch pattern is shortened so that the manufacturing cost of the saw blade 15 can be reduced. It is. Further, as described above, the generation of cutting noise can be effectively suppressed, and the conventional problems as described above can be solved.

  FIG. 2 shows a saw blade 15 according to the second embodiment. In the second embodiment, the number of teeth of the saw tooth included in the tip pitch pattern PT is set to 5 with the number of teeth included in the set pattern. 10 teeth. That is, in the first embodiment, the saw teeth included in the set pattern are three teeth of the straight teeth 19S, the right set teeth 19R, and the left set teeth 19L, but in the second embodiment, the three teeth are the right teeth. The set teeth 19RA and the left set teeth 19LA are added, and the number of saw teeth included in the set pattern is five. Then, the number of saw teeth of the tooth tip pitch pattern PT is set to 10 by repeating the above set pattern twice.

  Also in the saw blade 15 according to the second embodiment, the respective sizes of the tooth tip pitches P1 to P10 between the respective saw teeth included in the tooth tip pitch pattern PT are different. And each dimension of tooth tip function pitch group PS1, PS2; PR1-PR4; PL1-PL4 is also different, respectively.

  In the saw blade 15 according to this embodiment, the number of saw teeth included in the set pattern is five, but the entire width W of the cutting groove 17 is divided into a plurality of divided widths W1, W2, and W3 for cutting. There are three types of saw teeth having different tooth tip shapes and different cutting functions: straight teeth 19S, right set teeth 19R, and left set teeth 19L. The number of teeth included in the tip pitch pattern PT is set to 10 in the set pattern teeth. When divided by the number 5, it becomes 2 and becomes an integer.

  In other words, the set pattern having the same sawtooth arrangement (arrangement) is repeated twice to form the addendum pitch pattern PT, and the sizes of addendum pitches P1 to P10 between the respective sawtooth included in the addendum pitch pattern PT are different. In addition, since the respective sizes of the sawtooth function pitches PS1, PS2; PR1 to PR4; PL1 to PL4 are made different, the same effects as those of the first embodiment described above can be obtained.

  In the second embodiment, each of the right set teeth 19R and the left set teeth 19L is provided with two teeth, so that a shaving effect can be obtained when the workpiece WP is cut, and the cut surface of the workpiece WP is cut. Can be cut into a smoother surface.

  FIG. 3 shows a saw blade 15 according to the third embodiment. In the saw blade 15 according to the third embodiment, the straight teeth 19S in the saw blade 15 according to the first embodiment are omitted. Thus, a set pattern is constituted by two teeth, a right set tooth 19R and a left set tooth 19L. In the saw blade 15, the entire width W of the cutting groove 17 formed in the workpiece WP is divided into left and right divided widths W3 and W2, and the left and right divided teeth 19L and 19R share the left and right divided widths W3 and W2, respectively. And cutting.

  In the saw blade 15, the number of saw teeth as the tooth tip pitch pattern PT is set to 8 by repeating the set pattern four times. Accordingly, when the number of saw teeth 8 of the tooth tip pitch pattern PT is divided by the number of saw teeth 2 of the set pattern, 4 is obtained as an integer. The sizes of the tooth tip pitches P1 to P8 between the respective saw teeth in the tooth tip pitch pattern PT are different from each other, and the respective sizes of the tooth tip function pitches PR1 to PR4; PL1 to PL4 are unique. The pitch dimensions are different from each other.

  Therefore, this saw blade 15 can also achieve the same effect as the saw blade of the first embodiment described above.

  FIG. 4 shows a fourth embodiment. A saw blade 15 according to this embodiment is a saw blade having a cemented carbide tip at a tooth tip, and has a saw tooth 21H having the largest tooth height dimension from a reference position. , Three teeth of a saw tooth 21M having an intermediate tooth height and a saw tooth 21L having the smallest tooth height are provided as a set pattern. The saw teeth 21H, 21M, and 21L share the entire width W of the cutting groove 17 formed in the workpiece WP into a plurality of divided widths W1, W2 (two places on both sides) and W3 (two places on both sides). The saw blade 21H having the largest tooth height dimension is a bevel tooth having a slope chamfered on both corners of the batiksari tooth. The bevel teeth 21 </ b> H cut the portion of the divided width W <b> 1 at the center of the divided width of the cutting groove 17.

  The saw tooth 21M having an intermediate tooth height dimension is a bevel tooth having chamfered corners and a beveled surface similar to the bevel tooth 21H. The bevel tooth 21M corresponds to the central divided width W1 of the cutting groove 17. The cutting action is performed on the part of the divided width W2 (two places) in the middle part on both sides. The saw tooth 21L having the smallest tooth height is a trapezoidal tooth having a wide trapezoidal shape on the tooth tip side, and this split tooth 21L has split widths W3 (two places) on both outer sides of the split width W2 of the intermediate portion. This part performs the cutting action. It is also possible to make bevel teeth by chamfering both corners of the battered teeth 21L.

  In the configuration provided with the three teeth of the saw teeth 21H, 21M, and 21L as a set pattern, the arrangement (arrangement) is in the order of the saw teeth 21H, 21L, and 21M, and the tip pitch is obtained by repeating this set pattern twice. A pattern PT is formed. Therefore, the number of teeth of the tooth tip pitch pattern PT is 6, and when this number of teeth 6 is divided by the number of teeth 3 of the clam pattern, it becomes 2 and becomes an integer.

  In the above configuration, the tooth tip pitches between the saw teeth 21H, 21L, and 21M in the tooth tip pitch pattern PT are P1 to P6, and it is desirable that the tooth tip pitches P1 to P6 have different dimensions, but the saw tooth pitch P1. , P2 and P3, the sawtooth pitches P2 and P3 are equal, and in the clam pattern including the sawtooth pitches P4, P5 and P6, the sawtooth pitches P5 and P6 are equal. However, the sawtooth pitches P2 and P3 and the sawtooth pitches P5 and P6 have different dimensions. In other words, the tooth tip pitch pattern PT is configured by a combination of four types of tooth tip pitches.

  In the saw blade 15, the tooth tip functional pitch of the bevel tooth 21H is a dimension unique to the tooth tip functional pitch group of the bevel tooth 21H, which is PH1 and PH2, which are different dimensions. The tip function pitch of the bevel tooth 21M is a dimension unique to the tip function pitch group of the bevel tooth 21M, and is a different dimension, PM1 and PM2. Further, the tooth tip functional pitch of the patch teeth 21L is a dimension unique to the tooth tip function pitch group of the patch teeth 21L, which is PL1 and PL2, which are different dimensions. The above-mentioned tooth tip function pitch groups PH1, PH2; PM1, PM2; PL1, PL2 are respectively unique dimensions and are different dimensions.

  When the workpiece WP is cut by the saw blade 15, the chips generated from the cutting groove 17 are divided into five, and the bevel teeth 21H, 21H, 21M and batiksari teeth 21L, and the sawtooth pitch types in the tip pitch pattern PT are sawtooth pitch types that are more than half (four types) of the sawtooth (six teeth) included in the tip tip pitch pattern PT, and bevel teeth 21H The tooth tip functional pitches PH1, PH2 of the bevel teeth 21M and the tooth tip function pitches PM1, PM2 of the bevel tooth 21M and the tooth tip functional pitches PL1, PL2 of the toothless tooth 21L are different from each other. It does not resonate with the cutting vibration repeatedly generated by the tip pitch pattern PT, reducing the cutting noise caused by the cutting vibration. It is those that can Rukoto.

  In other words, the saw blade 15 can achieve the same effect as the saw blade of the first embodiment.

  FIG. 5 shows a fifth embodiment, which is different from the fourth embodiment described above in that the arrangement of the clam pattern is made in the order of the bevel tooth 21H, the bevel tooth 21M, and the batter tooth 21L, and the tooth tip. The tooth pitches P1 to P6 between the saw teeth in the pitch pattern PT are set to different dimensions. Each tooth tip function pitch PH1, PH2; PM1, PM2; PL1, PL2 is also set to a different size.

  In the fifth embodiment, the same effects as in the fourth embodiment can be obtained.

  FIG. 6 shows a sixth embodiment, and the arrangement of the saw teeth 21H, 21M, and 21L is the same as the arrangement of the saw teeth in the above-described fourth embodiment. In this embodiment, the number of saw teeth included in the tooth tip pitch pattern PT is nine, and the tooth tip pitches P1, P5, and P6 have the same pitch dimension in the tooth tip pitches P1 to P9 of each saw tooth. Furthermore, the tooth tip pitches P2, P3 and P7 have the same pitch dimension, and the tooth tip pitches P4, P8 and P9 have the same pitch dimension. That is, the tooth tip pitches P1 to P9 have three types of pitch dimensions.

  The tooth tip functional pitches PH1, PH2 and PH3 to which the bevel tooth 21H belongs are inherent dimensions, but PH2 and PH3 are set to the same dimensions. Further, the tooth tip function pitches PL1, PL2, and PL3 to which the patch teeth 21L belong are unique dimensions, but PL1 and PL2 are set to the same dimensions. Furthermore, the tooth tip function pitches PM1, PM2, and PM3 to which the bevel tooth 21M belongs have unique dimensions, but PM1, PM2, and PM3 are set to the same dimensions.

  That is, in this saw blade 15, the same pitch dimension is included in the tooth tip pitches P1 to P9, and the same pitch dimension is included in the tooth tip function pitches PH1 to PH3 to which the bevel tooth 21H belongs, and the bevel tooth 21M. Even if the same size is included in the tooth tip function pitches PM1 to PM3 to which the tooth tips belong, the tooth tip function pitches PH1 to PH3 belonging to each of the bevel teeth 21H, the bevel teeth 21M, and the batter teeth 21L; PM1 to PM3; PL1 to PL3 Since each has a unique pitch size and a different pitch size, generation of cutting noise can be effectively suppressed, and the same effects as those of the above-described embodiment can be obtained.

  FIG. 7 shows a seventh embodiment. In the saw blade 15 according to this embodiment, the arrangement of the saw teeth 21H, 21M, 21L (the clam pattern) is the same as the saw blade of the fifth embodiment, The number of saw teeth of the tooth tip pitch pattern PT is nine. The pitch dimensions of the tooth tip pitches P1 to P9 are different from each other, and the tooth tip function pitches PH1 to PH3 to which the bevel teeth 21H belong are unique pitch dimensions and are different pitch dimensions. Further, the addendum function pitches PM1 to PM3 to which the bevel tooth 21M belongs are unique pitch dimensions, and are different pitch dimensions. Furthermore, the tooth tip functional pitches PL1 to PL3 to which the patch teeth 21L belong are unique pitch dimensions, and are different pitch dimensions.

  In the saw blade 15 according to this embodiment, the addendum pitches P1 to P9, addendum function pitches PH1 to PH3; PM1 to PM3; and PL1 to PL3 have different pitch dimensions, and thus, similar to the first embodiment. Therefore, it is possible to effectively suppress resonance in a sound range that tends to become cutting noise, and to more effectively suppress generation of cutting noise.

  FIG. 8 shows a saw blade according to the eighth embodiment. The saw blade 15 according to this embodiment omits the bevel tooth 21M and forms a clam pattern with two teeth of the bevel tooth 21H and the batter tooth 21L. The number of saw teeth of the tooth tip pitch pattern PT is set to 8 by repeating this set-up pattern four times.

  The tooth tip pitches between the saw teeth are different from each other in the pitch dimensions P1 to P8, and the tooth tip function pitches PH1 to PH4 to which the bevel teeth 21H belong are unique pitch dimensions, and the pitch dimensions are different from each other. It is set to. Further, the tooth tip function pitches PL1 to PL4 to which the patch teeth 21L belong are unique pitch dimensions, and are set to different pitch dimensions.

  Therefore, in the saw blade 15, the configuration of the tooth tip becomes simpler, the manufacturing cost becomes lower, and the same effect as the saw blade according to the above-described embodiment can be obtained.

  FIG. 9 shows a saw blade according to the ninth embodiment. The saw blade 15 according to the present embodiment has a configuration in which two teeth of the patch teeth 23R and 23L similar to the patch teeth 21L are provided as a set pattern. A concave portion 25 is formed on the right side of the patch teeth 23 </ b> R, and the left and right divided widths W <b> 1 and W <b> 1 divided by the concave portion 25 are cut from the entire width W of the cutting groove 17. A concave portion 25 is formed on the left side of the patch teeth 23L, and the left and right divided widths W2 and W2 divided by the concave portion 25 are cut from the entire width W of the cutting groove 27.

  The saw blade 15 is configured to have a tooth tip pitch pattern having eight teeth by repeating the clam pattern four times, and the tooth tip pitch of each saw tooth is set to a different pitch dimension from P1 to P8. . The tooth tip functional pitches PR1 to PR4 to which the patch teeth 23R belong are unique pitch dimensions and are set to different pitch dimensions. Further, the tooth tip functional pitches PL1 to PL4 to which the patch teeth 21L belong are unique pitch dimensions and are set to different pitch dimensions.

  In the saw blade 15, the tooth tip pitches P1 to P8 have different pitch dimensions, and the tooth tip function pitches PR1 to PR4; PL1 to PL4 are unique pitch dimensions and have different pitch dimensions. Therefore, the same effect as the saw blade described above can be obtained.

  FIG. 10 shows a saw blade according to the tenth embodiment. The saw blade 15 according to this embodiment is a saw blade having a cemented carbide (carbide tip) on the tip side of the saw blade, and has the largest bevel tooth 27H having the highest tooth height and the next largest tooth height. As the set pattern, there are four teeth, the left and right set teeth 27L and 27R, which have the same tooth height dimension and the right and left set out. The arrangement order of the sawtooth as the set pattern is the order of the bevel tooth 27H, the batter set teeth 27B, the left set teeth 27L, and the right set teeth 27R. By repeating this set pattern twice, the teeth including 8 teeth are included. A tip pitch pattern PT is formed.

  The bevel tooth 27H cuts the portion of the central portion of the cutting groove 17 with the divided width W1, and the patch tooth 27B is the portion of the divided width W2, W2 on both outer sides adjacent to the divided width W1 of the central portion. Cutting is performed. The right set teeth 27R cut the rightmost divided width W3 portion of the cutting groove 17, and the left set teeth 27L cut the leftmost divided width W4 portion of the cutting groove 27. It is.

  In the saw blade 15, the tooth tip pitches P1 to P8 included in the tooth tip pitch pattern PT are set to different pitch dimensions, and the tooth tip function pitches PH1 and PH2 to which the bevel tooth 27H belongs are unique. Dimensions and different pitch dimensions. Further, the tooth tip function pitches PB1 and PB2 to which the patch teeth 27B belong are unique dimensions and are set to different pitch dimensions. Furthermore, the addendum function pitches PL1 and PL2 to which the left set teeth 27L belong have unique dimensions and are set to different pitch dimensions, and the addendum function pitches PR1 and PR2 to which the right set teeth 27R belong have unique dimensions. There are different pitch dimensions.

  In the saw blade 15, the pitch dimensions of the tooth tip pitches P1 to P8 included in the tooth tip pitch pattern PT are different from each other, and the tooth tip function pitches PH1, PH2; PB1, PB2; PL1, PL2; Since the pitch dimensions of PR1 and PR2 are different from each other, they repeatedly act on the workpiece WP with the tooth tip pitch pattern PT, and the same cutting is performed at a relatively short period corresponding to the length of the tooth tip pitch pattern PT. The cutting noise resulting from the generation of vibration can be effectively suppressed and reduced in the same manner as the saw blades of the above-described embodiments.

  As can be understood from the above description, the number of saw teeth as a set pattern is set to 2 to 4 teeth, and this set pattern is repeated in the range of 2 to 4 times to constitute the tooth tip pitch pattern PT. Therefore, the number of saw teeth having different tip shapes, that is, the number of saw teeth having different cutting functions is two to four, and the tooth tip shape of the saw teeth can be simplified and simplified. Since the length of the tooth tip pitch pattern PT can be suppressed to 200 mm or less, a cutting tool for cutting a plurality of saw teeth included in the tooth tip pitch pattern PT can be manufactured at low cost, and the saw blade 15 can be manufactured. Cost can be reduced. That is, the length 200 mm of the tooth tip pitch pattern PT is a branch point where both low manufacturing costs and high precision maintenance of saw blade processing in saw blade manufacturing can be achieved.

  In the saw blade 15, the tooth tip pitch types of the plurality of tooth tips included in the tooth tip pitch pattern PT that repeatedly act on the workpiece WP at the time of cutting the workpiece WP are all different pitch dimensions or more than half of the tooth tips. The pitch types have different pitch dimensions. Further, in the plurality of saw teeth included in the set pattern in the saw blade 15, the tooth tip function pitch group of each saw tooth having a different cutting function is set to a dimension specific to the saw tooth having a different function, and a specific tooth The addendum function pitch included in the addendum function pitch group has a pitch dimension different from the addendum function pitch included in the other addendum function pitch groups.

  Therefore, when the workpiece WP is cut by the saw blade 15, the cutting noise tends to be generated due to the repetition of the tooth tip pitch pattern PT, but the resonance of the sound range that tends to become the cutting noise is effectively suppressed. Yes, cutting noise can be reduced.

It is explanatory drawing which showed notionally and schematically the structure of the saw blade which concerns on the 1st Embodiment of this invention. It is explanatory drawing which showed notionally and schematically the structure of the saw blade which concerns on the 2nd Embodiment of this invention. It is explanatory drawing which showed notionally and schematically the structure of the saw blade which concerns on the 3rd Embodiment of this invention. It is explanatory drawing which showed notionally and schematically the structure of the saw blade which concerns on the 4th Embodiment of this invention. It is explanatory drawing which showed notionally and schematically the structure of the saw blade concerning the 5th Embodiment of this invention. It is explanatory drawing which showed notionally and schematically the structure of the saw blade concerning the 6th Embodiment of this invention. It is explanatory drawing which showed notionally and schematically the structure of the saw blade which concerns on the 7th Embodiment of this invention. It is explanatory drawing which showed notionally and schematically the structure of the saw blade concerning the 8th Embodiment of this invention. It is explanatory drawing which showed notionally and schematically the structure of the saw blade concerning the 9th Embodiment of this invention. It is explanatory drawing which showed notionally and schematically the structure of the saw blade concerning the 10th Embodiment of this invention. It is explanatory drawing which showed the structure of the conventional saw blade. It is explanatory drawing which showed the structure of the conventional saw blade.

Explanation of symbols

3 trunk 15 saw blade 17 cutting groove 19S straight tooth 19R, 27R right set teeth 19L, 27L left set teeth 21H, 21M, 27H bevel teeth 21L, 23L, 23R, 27B

Claims (7)

  When a workpiece is cut by a saw blade, the saw blade is provided with a plurality of saw teeth that divide and cut the entire width of the cutting groove formed in the workpiece for each of the plurality of divided widths, and each of the divided widths. A plurality of corresponding saw teeth are provided as a set pattern, and a plurality of the set patterns are provided with a tooth tip pitch pattern that becomes a constant repetitive pattern on the saw blade, and the plurality of set patterns provided in the tooth tip pitch pattern are divided equally. When the pitch of the saw blade of the same function that cuts the width is the tooth tip function pitch, the tooth tip function pitch of each saw tooth having a different function corresponding to each divided width is a different pitch in the tooth tip pitch pattern. A saw blade.   When a workpiece is cut by a saw blade, the saw blade is provided with a plurality of saw teeth that divide and cut the entire width of the cutting groove formed in the workpiece for each of the plurality of divided widths, and each of the divided widths. A plurality of corresponding saw teeth are provided as a set pattern, and a plurality of the set patterns are provided with a tooth tip pitch pattern that becomes a constant repetitive pattern on the saw blade, and the plurality of set patterns provided in the tooth tip pitch pattern are divided equally. When the pitch of the saw blade of the same function that cuts the width is the tooth tip function pitch, the tooth tip function pitch of each saw tooth having a different function corresponding to each divided width is a different pitch. Saw blades characterized by having the same pitch dimensions.   When a workpiece is cut by a saw blade, the saw blade is provided with a plurality of saw teeth that divide and cut the entire width of the cutting groove formed in the workpiece for each of the plurality of divided widths, and each of the divided widths. A plurality of corresponding saw teeth are provided as a set pattern, and a plurality of the set patterns are provided with a tooth tip pitch pattern that becomes a constant repetitive pattern on the saw blade, and the plurality of set patterns provided in the tooth tip pitch pattern are divided equally. When the pitch of the saw blade of the same function that cuts the width is the tooth tip function pitch, the tooth tip function pitch of each saw tooth having a different function corresponding to each divided width is a different pitch in the tooth tip pitch pattern, and A saw blade characterized in that the pattern includes left and right set teeth that are set in the left and right direction.   When a workpiece is cut by a saw blade, the saw blade is provided with a plurality of saw teeth that divide and cut the entire width of the cutting groove formed in the workpiece for each of the plurality of divided widths, and each of the divided widths. A plurality of corresponding saw teeth are provided as a set pattern, and a plurality of the set patterns are provided with a tooth tip pitch pattern that becomes a constant repetitive pattern on the saw blade, and the plurality of set patterns provided in the tooth tip pitch pattern are divided equally. When the pitch of the saw blade of the same function that cuts the width is the tooth tip function pitch, the tooth tip function pitch of each saw tooth having a different function corresponding to each divided width is a different pitch. Have the same pitch dimension, and the set pattern includes left and right set teeth that are set in the left and right direction. The saw blade.   When a workpiece is cut by a saw blade, the saw blade is provided with a plurality of saw teeth that divide and cut the entire width of the cutting groove formed in the workpiece for each of the plurality of divided widths, and each of the divided widths. A plurality of corresponding saw teeth are provided as a set pattern, and a plurality of the set patterns are provided with a tooth tip pitch pattern that becomes a constant repetitive pattern on the saw blade, and the plurality of set patterns provided in the tooth tip pitch pattern are divided equally. When the pitch of the saw blade of the same function that cuts the width is the tooth tip function pitch, the tooth tip function pitch of each saw tooth having a different function corresponding to each divided width is a different pitch in the tooth tip pitch pattern, and A saw blade characterized in that the pattern includes bee-type claws.   When a workpiece is cut by a saw blade, the saw blade is provided with a plurality of saw teeth that divide and cut the entire width of the cutting groove formed in the workpiece for each of the plurality of divided widths, and each of the divided widths. A plurality of corresponding saw teeth are provided as a set pattern, and a plurality of the set patterns are provided with a tooth tip pitch pattern that becomes a constant repetitive pattern on the saw blade, and the plurality of set patterns provided in the tooth tip pitch pattern are divided equally. When the pitch of the saw blade of the same function that cuts the width is the tooth tip function pitch, the tooth tip function pitch of each saw tooth having a different function corresponding to each divided width is a different pitch. The saw blade is characterized in that the same pitch dimension is included, and the set pattern includes bee-type set teeth.   The saw blade according to any one of claims 1 to 6, wherein sawtooth pitches in the set pattern are different from each other.

Images