Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
  • B23D55/00—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts
  • B23D55/08—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of devices for guiding or feeding strap saw blades
  • B23D55/082—Devices for guiding strap saw blades
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
  • B23D55/00—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts
  • B23D55/08—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of devices for guiding or feeding strap saw blades
  • B23D55/088—Devices for feeding strap saw blades
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
  • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
  • B23D61/12—Straight saw blades; Strap saw blades
  • B23D61/123—Details of saw blade body
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/04—Processes
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/04—Processes
  • Y10T83/0405—With preparatory or simultaneous ancillary treatment of work
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/929—Tool or tool with support
  • Y10T83/9319—Toothed blade or tooth therefor
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/929—Tool or tool with support
  • Y10T83/9319—Toothed blade or tooth therefor
  • Y10T83/935—Plural tooth groups

Definitions

• the present invention relates to a band saw blade having a large number of teeth and a cutting method for cutting a workpiece in a cutting region.
• a band saw machine is often used when cutting a metal or wooden workpiece, and includes a band saw blade as a cutting tool.
• the band saw blade has a large number of teeth.
• the numerous teeth there are a large number of straight blades, a large number of right set teeth that are swung rightward, and a large number of left teeth that are swung leftward. Includes clams teeth.
• Japanese Patent No. 2953767 is a prior art related to the present invention.
• the present invention has been made in order to solve the above-described problems, and the object of the present invention is to suppress the bending of the band saw blade, and to increase the life of the band saw blade.
• An object of the present invention is to provide a band saw blade and a cutting method capable of reducing cutting noise. Disclosure of the invention
• a band saw blade according to the first aspect of the present invention is a band saw blade having a large number of teeth supported by a saw blade guide device of a band saw machine so as to be able to travel, A plurality of uneven portions formed continuously on the back side of the band saw blade; in the above configuration, each of the uneven portions serves as a backup guide in the saw blade guide device. It consists of a concave part that can be engaged and disengaged and a convex part adjacent to this concave part;
• the length of the uneven portion is not more than three times the maximum pitch of the tooth tip of the tooth It is.
• the band saw blade according to the third aspect of the present invention which is dependent on the first aspect or the second aspect, is the band saw blade, wherein the plurality of uneven portions have a plurality of types according to the length of the uneven portion. It is classified.
• the band saw blade according to the fourth aspect of the present invention which is subordinate to any one of the first aspect to the third aspect, is the band saw blade, wherein the recesses in the multiple uneven portions are: It is classified into a plurality of types according to the length of the recess.
• the band saw blade according to the fifth aspect of the present invention which is subordinate to any one of the first aspect to the fourth aspect, is the band saw blade, wherein the recesses in the multiple uneven portions are: It is classified into a plurality of types according to the depth of the recess.
• the band saw blade is circulated and run while the band saw blade is supported by the saw blade guide device of the band saw machine.
• the saw blade housing of the band saw machine is moved relative to the cutting direction approaching the workpiece. As a result, the workpiece can be cut in the cutting region (general cutting action).
• the many uneven portions are continuously formed on the back side of the band saw blade, and the length of the uneven portions is the maximum pitch of the tooth tip of the tooth. Since it is configured to be 4 times or less in length, during the cutting of the workpiece, the concave portions in the large number of concave and convex portions continuously engage and disengage from the backup guide.
• the band saw blade can be forced to vibrate in the band width direction in the region. Thereby, in the cutting area, the operation in which the teeth bite into the workpiece and the operation in which the teeth scrape off chips can be alternately repeated at short intervals.
• the reason why the length of the concavo-convex portion is not more than four times the maximum pitch of the tooth tip of the tooth is that the concavo-convex portion is supported by the results of Experiment 1 described later. Part This is because if the length exceeds four times the maximum pitch of the tooth tip of the tooth, the noise value (particularly the noise value measured by the C characteristic) increases.
• a band saw blade according to a sixth aspect of the present invention is a band saw blade that is supported by a saw blade guide device of a band saw machine so as to be able to travel and has a large number of teeth, and includes the following: A plurality of notch portions continuously formed on the back side of the blade, wherein the notch portions can be engaged and disengaged with a knock-up guide in the saw blade guide device; The length is not more than 4 times the maximum pitch of the teeth.
• the band saw blade is circulated while the band saw blade is circulated while the band saw blade is supported by the saw blade guide device of the band saw machine.
• the saw blade housing is moved relatively in the cutting direction approaching the workpiece. Accordingly, it is possible to perform cutting on the workpiece in the cutting region (general cutting action).
• the plurality of notches are continuously formed on the back side of the band saw blade, and the length of the notches is the maximum pitch of the tooth tip of the teeth. Since it is configured to be 4 times or less in length, during cutting of the workpiece, the plurality of notches are continuously engaged and disengaged from the backup guide, so that the band saw is cut in the cutting region. The blade can be forced to vibrate in the band width direction. As a result, in the cutting region, the operation of the teeth biting into the workpiece and the operation of the teeth scraping off chips can be alternately repeated at short intervals.
• the band saw blade according to the seventh aspect of the present invention subordinate to the sixth aspect is the band saw blade, wherein the length of the notch portion is not more than three times the maximum pitch of the tooth tip of the tooth. It is.
• the cutting method according to the eighth aspect of the present invention includes the following steps: A saw blade of a band saw machine The band saw blade is continuously circulated while being supported by a guide device. The workpiece is cut in the cutting region by moving the saw blade housing of the band saw machine in the cutting direction approaching the workpiece; and the band saw blade is moved in the band width direction in the cutting region. Force vibration.
• the band saw blade since the band saw blade is forcibly vibrated in the band width direction in the cutting area, the tooth bites into the workpiece in the cutting area.
• the operation of scraping off chips by the teeth can be repeated alternately at short intervals.
• the cutting method according to the ninth aspect of the present invention which is dependent on the eighth aspect, is characterized in that, in the cutting method, the vibration is a plurality of mutually formed continuously on the back side of the band saw blade.
• a recess in an adjacent uneven portion is generated by continuously engaging and disengaging from a backup guide provided in the saw blade guide device; and the length of the uneven portion is a plurality of the band saw blade has The length is 4 times the maximum pitch of the tip of the tooth.
• the concave portions in the large number of concave and convex portions are continuously engaged and disengaged from the backup guide, whereby the band saw blade is moved in the band width direction in the cutting region. Therefore, the operation in which the teeth bite into the workpiece and the operation in which the teeth scrape off the chips in the cutting region can be repeated alternately at short intervals.
• the cutting method according to the tenth aspect of the present invention which is dependent on the eighth aspect, is characterized in that in the cutting method, the vibration includes a large number of notch portions continuously formed on the back side of the band saw blade. It is generated by continuously engaging and disengaging from a backup guide provided in the saw blade guide device; and the length of the concavo-convex portion is the maximum pitch of the plurality of tooth tips of the band saw blade The length is 4 times or less.
• the plurality of notches are continuously engaged and disengaged from the back-up guide, thereby forcing the band saw blade in the band width direction in the cutting region. Therefore, in the cutting area, the tooth biting operation and the tooth scraping chip operation can be alternately repeated at short intervals.
• the cutting method according to the eleventh aspect of the present invention which is dependent on any one of the eighth aspect to the tenth aspect, has a vibration amplitude of the band saw blade of 0.1 mm. It is above and 0.5mm or less.
• the frequency of vibration of the band saw blade is 5 Hz or more.
• the operation in which the teeth bite into the workpiece and the operation in which the teeth scrape off chips can be alternately repeated at short intervals in the cutting region.
• the cutting length of the band saw blade can be shortened to reduce the cutting resistance of the workpiece. Therefore, the cutting of the band saw blade is suppressed, the life of the band saw blade is prolonged, the cutting noise is reduced, and the working environment is improved.
• FIG. 1 (a) and (b) are views showing a band saw blade according to a first example of the embodiment.
• FIG. 2 (a) to (d) are schematic diagrams for explaining the operation of the first example of the embodiment.
• FIG. 3 is a view showing a band saw blade according to a second example of the embodiment.
• FIG. 4 is a diagram showing a band saw blade according to a third example of the embodiment.
• FIGS. 5 (a) and 5 (b) are diagrams showing a band saw blade according to a fourth example of the embodiment.
• FIG. 6 is a diagram showing a band saw blade according to a fifth example of the embodiment.
• FIG. 7 is a view showing a band saw blade according to a sixth example of the embodiment.
• FIG. 8 is a view showing a band saw blade according to a seventh example of the embodiment.
• FIG. 9 is a view showing a band saw blade according to an eighth example of the embodiment.
• FIG. 10 is a diagram showing a band saw blade according to a ninth example of the embodiment.
• FIG. 11 is a diagram showing a band saw blade according to a tenth example of the embodiment.
• FIGS. 12 (a) and 12 (b) are views showing a band saw blade according to an eleventh example of the embodiment.
• FIGS. 13 (a) and 13 (b) are views showing a band saw blade according to a twelfth example of the embodiment.
• FIG. 14 (a) is a diagram showing a band saw blade according to a thirteenth example of the embodiment.
• FIG. 4 (b) is a view along the XlVb-XlVb line in FIG. 14 (a).
• FIG. 15 is a view showing a band saw blade according to a fourteenth example of the embodiment.
• FIGS. 16 (a) to 16 (d) are schematic diagrams for explaining the operation of the fourteenth example of the embodiment.
• FIGS. 17 (a) and 17 (b) are views showing a band saw blade according to a fifteenth example of the embodiment.
• FIG. 18 (a) is a diagram showing a band saw blade according to the sixteenth example of the embodiment, and FIG. 18 (b) is taken along line XVIIIb-XVIIIb in FIG. 18 (a).
• FIG. 18 (b) is taken along line XVIIIb-XVIIIb in FIG. 18 (a).
• FIG. 19 is a front view of a horizontal band saw machine according to the embodiment.
• FIG. 20 (a) is a diagram showing the relationship between the length of the concavo-convex part and the cutting resistance ratio when the length of the concavo-convex part of the band saw blade is changed under a predetermined condition.
• FIG. 20 (b) is a diagram showing the relationship between the length of the concavo-convex part and the noise value when the experiment was performed by changing the length of the concavo-convex part of the band saw blade under a predetermined condition.
• FIG. 21 is a diagram showing the relationship between the amplitude and the cutting resistance ratio when an experiment was performed by changing the amplitude of the band saw blade vibration under a predetermined condition
• FIG. FIG. 10 is a diagram showing the relationship between the amplitude and the noise value when an experiment was performed by changing the amplitude of vibration of the band saw blade under a predetermined condition.
• FIG. 22 is a diagram showing the relationship between the frequency and the cutting resistance ratio when an experiment was performed by changing the frequency of the band saw blade vibration under a predetermined condition.
• FIG. 19 is a front view of the horizontal band saw machine according to the embodiment. Note that “left and right” means left and right, and “up and down” means up and down, based on the orientation of the drawing at the time of publication of the patent publication.
• the horizontal band saw 1 includes a box-shaped support frame 3, and a table 5 that supports the workpiece W is provided on the support frame 3. ing.
• the support frame 3 is provided with a fixed vise 7 and a movable vice 9 that sandwich the workpiece W, and the movable vise 9 moves to and away from the fixed vice 7 by the operation of the vise cylinder 11. It can move in the direction.
• the support frame 3 is provided with a guide post 13 (the guide post 13-- is omitted in FIG. 19).
• a saw blade housing 15 is vertically mounted on the guide post 13. It is provided to be movable in the direction. And move the saw blade housing 15 up and down
• the supporting frame 3 is provided with a nodding cylinder 19 (a part of the housing cylinder 19 is omitted in FIG. 19) provided with a piston rod 17 movable in the vertical direction. The tip of the piston rod 17 is connected to an appropriate position of the saw blade housing 15.
• a main driving wheel 19 and a driven wheel 21 are rotatably provided, and the main driving wheel 19 is linked to a running motor (not shown).
• the main driving wheel 19 and the driven wheel 21 are provided with an endless band saw blade 23.
• an endless band saw blade 23 is provided in the saw blade housing 15 via the main wheel 19 and the driven wheel 21.
• the saw blade housing 15 is provided with a pair of saw blade guide devices 25, and the pair of saw blade guide devices 25 has a tooth tip of a portion entering the cutting area A on the workpiece W side.
• the band saw blade 23 is supported so that it can run.
• Each of the saw blade guide devices 25 is one of a pair of guide rollers 27 that support the band saw blade 23 so as to sandwich the body portion of the band saw blade 23 and a backup guide that supports the back side of the band saw blade 23. It has a backup roller 29 (see Fig. 1).
• the band saw blade 23 and the saw blade guide device 25 There are various examples of the band saw blade 23 and the saw blade guide device 25 as described later.
• the movable vice 9 is moved to the left to approach the fixed vice 7 by the operation of the vise cylinder 11, and the workpiece W supported on the table 5 by the movable vice 9 and the fixed vice 7 is moved. Hold it.
• the driving wheel 19 and the driven wheel 21 are rotated by driving the traveling motor, and the band saw blade 23 is circulated.
• the saw blade housing 15 is moved downward (cutting direction) closer to the workpiece W by the operation of the housing cylinder 19. As a result, the workpiece W can be cut in the cutting area A.
• FIGS. 2 (a) to 2 (d) are views of the first example of the embodiment.
• FIG. 20 (a) is a schematic diagram for explaining the action, and shows the relationship between the length of the concavo-convex portion and the cutting resistance ratio when the length of the concavo-convex portion of the band saw blade is changed under a predetermined condition.
• FIG. 20 (b) shows a band saw blade under predetermined conditions. It is a figure which shows the relationship between the length of an uneven
• FIG. 21 (a) is a diagram showing the relationship between the amplitude and the cutting resistance ratio when an experiment was conducted by changing the amplitude of the band saw blade vibration under a predetermined condition
• FIG. 21 (b) Fig. 22 is a diagram showing the relationship between the amplitude and the noise value when an experiment was performed by changing the amplitude of the band saw blade vibration under a predetermined condition.
• Fig. 22 shows the vibration of the band saw blade under the predetermined condition. It is a figure which shows the relationship between the frequency and cutting resistance ratio in the case of experimenting by changing frequency.
• the band saw blade 23i according to the first embodiment is supported by the pair of saw blade guide devices 25 so as to be able to run as described above.
• the large number of teeth 31 includes a large number of straight teeth, a large number of left set teeth, and a large number of right set teeth.
• each concavo-convex portion 33 is a rectangular concave portion (depth) that can be engaged with and detached from the knock-up roller 29, respectively.
• the band saw blade 23i is configured such that the length P of the concavo-convex portion 33 is not less than the minimum pitch Tmin of the tooth tip of the tooth 31 and not more than four times the maximum pitch Tmax.
• the reason why the length of the concavo-convex portion 33 is set to be not more than four times the maximum tip pitch Tmax of the tooth is supported by the results of Experiment 1 shown in FIGS. 20 (a) and 20 (b). This is because the noise value (especially the noise value measured by the C characteristic) increases when the length of the concavo-convex portion 33 exceeds the length (52 mm) of the maximum tip pitch Tmax of the tooth 31. .
• experiment 1 was conducted under the predetermined conditions (workpiece W diameter was 400 mm, band saw blade 23i saw width was 41 mm, band thickness was 1.3 mm, band length was 4995 mm, and minimum tooth tip pitch Tmin was 9 4mm, maximum tooth tip pitch Tmax 13. Omm, backup roller 29 diameter 34mm, band saw blade 23i traveling speed 55mZmin, cutting rate 50cm2Zmin).
• the band saw blade 23 i is configured such that a gap is formed between the backup roller 29 and the bottom surface of the recess 35 when the backup roller 29 is engaged with the recess 35. Further, as shown in FIG. 1 (b), in order to suppress stress concentration occurring in the corner on the bottom surface side of the recess 35, it is desirable that the corner on the bottom surface side of the recess 35 is configured in an R shape. [0045] Next, the cutting method according to the first embodiment will be described including its operation.
• the saw blade housing 15 is moved downward while approaching the workpiece W while circulating the band saw blade 23 i. As a result, the workpiece W can be cut in the cutting area A (see FIG. 19).
• a large number of concave and convex portions 33 are continuously formed on the back side of the band saw blade 23i so that the length P of the concave and convex portions 33 is less than or equal to four times the maximum pitch Tmax of the tooth tip of the tooth 31. Therefore, during cutting of the workpiece W, the concave portions 35 in the large number of concave and convex portions 33 continuously engage and disengage from the backup roller 29, so that the band saw blade 23i is moved in the band width direction in the cutting region A. It can be forced to vibrate. As a result, in the cutting area A, the tooth 31 as shown in FIGS. 2 (a) and 2 (b) bites into the workpiece W, and the tooth 31 as shown in FIGS. The scraping operation can be repeated alternately at short intervals.
• the immersive force of the backup roller 29 to the recess 35 is the vibration amplitude S of the band saw blade 23i, and this amplitude S is 0.1 mm or more. 0.5 mm or less.
• This is supported by the results of Experiment 2 shown in Figs. 21 (a) and 21 (b). If the amplitude of vibration of the band saw blade 23i is less than 0.1 mm, the cutting resistance of the workpiece W should be made sufficiently small. On the other hand, when the vibration amplitude of the band saw blade 23i exceeds 0.5 mm, the noise value (especially the noise value measured by the C characteristic) increases. Note that Experiment 2 is also performed under the same predetermined conditions as Experiment 1.
• the operation in which the teeth 31 bite into the workpiece W and the operation in which the teeth 31 scrape off the chips Wa are alternately repeated at short intervals. Therefore, regardless of the size of the workpiece W, the cutting length of the band saw blade 23i can be shortened, and the cutting resistance of the workpiece W can be reduced. Therefore, the cutting of the band saw blade 23i is suppressed, the life of the band saw blade 23i is extended, the cutting noise is reduced, and the working environment is improved. To do.
• FIG. 3 is a view showing a band saw blade according to the second embodiment of the embodiment.
• the band saw blade 23ii according to the second embodiment has substantially the same configuration as the band saw blade 23i according to the first embodiment, and is different from the configuration of the band saw blade 23i only. explain.
• the number of uneven portions 33 is the same, whereas in the band saw blade 23ii according to the second embodiment, a large number
• the concavo-convex portion 33 is configured to be classified into two types according to the length of the concavo-convex portion 33.
• the uneven portions 33 having different lengths PI and P2 exist in the large number of uneven portions 33.
• the band saw blade 23ii according to the second embodiment Even if the band saw blade 23ii according to the second embodiment is used, the same cutting method as in the first embodiment can be used. In the second embodiment, the same operation as in the first embodiment can be performed. And has an effect.
• the concavo-convex portions 33 having different lengths PI and P2 exist in the many concavo-convex portions 33, it is possible to further improve the cutting performance (easiness of cutting) of the workpiece W and further reduce the cutting noise. it can.
• the large number of uneven portions 33 may be configured to be classified into three or more types according to the length of the uneven portion 33.
• FIG. 4 is a view showing a band saw blade according to the third embodiment of the embodiment.
• the band saw blade 23iii according to the third embodiment has substantially the same configuration as that of the band saw blade 23i according to the first embodiment, and is different only from the configuration of the band saw blade 23i. explain.
• the lengths of the concave portions 35 in the large number of uneven portions 33 are the same, whereas the band saw blade 23iv according to the third embodiment has the same length.
• the concave portions 35 in the large number of concave and convex portions 33 are configured to be classified into two types according to the length of the concave portions 35.
• the recesses 35 having the different lengths L1 and L2 exist in the recesses 35 in the large number of uneven portions 33.
• the band saw blade 23m according to the third embodiment Even if the band saw blade 23m according to the third embodiment is used, the same cutting method as that in the first embodiment can be used. In the third embodiment, the same operation as in the first embodiment can be performed. And has an effect.
• the recesses 35 in the large number of recesses and projections 33 have different lengths LI and L2. Therefore, the cutting performance of the workpiece W can be improved and cutting noise can be further reduced.
• the vibrations of the band saw blade 23iv have different amplitudes SI and S2 corresponding to the different lengths of the recesses 35.
• concave portions 35 in the large number of concave and convex portions 33 may be configured to be classified into three or more types according to the length of the concave portions 35.
• FIGS. 5A and 5B are diagrams showing a band saw blade according to a fourth example of the embodiment.
• the band saw blade 23vi according to the fourth embodiment has substantially the same configuration as the band saw blade 23i according to the first embodiment. Only the differences will be described.
• the concavo-convex portion 33 is configured to be classified into two types according to the length of the concavo-convex portion 33.
• uneven portions having different lengths PI and P2 exist in the large number of uneven portions.
• the lengths of the adjacent convex portions 37 and the convex portions 37 may be different (P 1 ⁇ L 1 ⁇ P 2 ⁇ L 2).
• the concave portions 35 in the many uneven portions 33 have the same length, whereas the band saw blade 23iv according to the fourth embodiment has the same length.
• the concave portions 35 in the large number of concave and convex portions 33 are configured to be classified into two types according to the length of the concave portions 35.
• the recesses 35 having the different lengths L1 and L2 exist in the recesses 35 in the large number of uneven portions 33.
• the band saw blade 23iv according to the fourth embodiment Even if the band saw blade 23iv according to the fourth embodiment is used, the same cutting method as that of the first embodiment can be used. In the fourth embodiment, the same operation as that of the first embodiment can be performed. And has an effect. In particular, there are concave and convex portions having different lengths PI and P2 in the large number of concave and convex portions, and concave portions 35 having different lengths LI and L2 are present in the concave portions 35 in the large number of concave and convex portions 33. Therefore, the machinability of the workpiece W can be improved and the cutting noise can be further reduced.
• the vibration of the band saw blade 23iv has different amplitudes SI and S2 corresponding to the different lengths of the recesses 35.
• the concave and convex portions 33 in the multiple concave and convex portions 33 may be configured to be classified into three or more types according to the length of the concave and convex portions 33. Depending on the situation, it may be configured to be classified into 3 or more types.
• FIG. 6 is a view showing a band saw blade according to the fifth embodiment of the embodiment.
• the band saw blade 23v according to the fifth embodiment has substantially the same configuration as that of the band saw blade 23i according to the first embodiment, and is different only from the configuration of the band saw blade 23i. explain.
• the shape of the recess 35 is rectangular, whereas in the band saw blade 23v according to the fifth embodiment, the shape of the recess 35 is formed. Is a trapezoid. Even if the band saw blade 23v according to the fifth embodiment is used, the same cutting method as in the first embodiment can be used. In the fifth embodiment, the same operation and effect as in the first embodiment can be achieved. Play.
• the large number of uneven portions 33 may be configured to be classified into two or more types according to the length of the uneven portion 33. Depending on the situation, it may be configured to be classified into two or more types.
• FIG. 7 is a view showing a band saw blade according to a sixth embodiment of the embodiment.
• the band saw blade 23vi according to the sixth embodiment has substantially the same configuration as the band saw blade 23i according to the first embodiment, and is different only from the configuration of the band saw blade 23i. explain.
• the shape of the recess 35 is rectangular, whereas in the band saw blade 23vi according to the sixth embodiment, the shape of the recess 35 is formed. It has a dovetail shape.
• FIG. 8 is a view showing a band saw blade according to a seventh embodiment of the present invention.
• the band saw blade 23vii according to the seventh embodiment has substantially the same configuration as the band saw blade 23iv according to the fourth embodiment, and only the differences from the band saw blade 23iv will be described. To do.
• the band saw blade 23iv according to the fourth embodiment is configured such that a gap is formed between the backup roller 29 and the bottom surface of the recess 35 when the backup roller 29 is engaged with the recess 35.
• the band saw blade 23vii according to the seventh embodiment is configured such that when the backup roller 29 is engaged with the recess 35, the backup roller 29 and the bottom surface of the recess 35 are in contact with each other. As a result, in the band saw blade 23vii, the number of contact points with the knock-up roller 29 is increased, and the cutting back force can be distributed and received by the knock-up roller 29.
• FIG. 9 is a view showing a band saw blade according to the eighth embodiment of the present embodiment.
• the band saw blade 23viii according to the eighth embodiment has substantially the same configuration as the band saw blade 23vii according to the seventh embodiment, and only the differences from the configuration of the band saw blade 23viii will be described. To do.
• the concave portion 35 in the large number of uneven portions 33 is one type
• the concave portions 35 in the large number of concave and convex portions 33 are configured to be classified into two types according to the depth of the concave portions 35.
• the recesses 35 having the different depths B1 and B2 exist in the recesses 35 of the large number of uneven portions 33.
• the same cutting method as the seventh embodiment (the cutting method of the first embodiment) can be used.
• the same effects and advantages as the eighth embodiment (first embodiment) can be obtained.
• the concave portions 35 in the large number of concave and convex portions may be configured to be classified into three or more types according to the depth of the concave portion 35. Depending on the situation, it may be configured to be classified into two or more types.
• FIG. 10 is a diagram showing a band saw blade according to a ninth example of the embodiment.
• the band saw blade 23k according to the ninth embodiment has substantially the same configuration as the band saw blade 23vii according to the seventh embodiment, and only differences from the configuration of the band saw blade 23vii will be described. .
• the shape of the recess 35 is rectangular, whereas in the band saw blade 23k according to the ninth embodiment, the shape of the recess 35 is formed. Is a circular arc having the same curvature as that of the back up roller 29.
• the knock-up roller 29 and the recess 35 are in surface contact, and the cutting back force can be distributed and received by the backup roller 29.
• the cutting method of the first embodiment can be used, and the ninth embodiment exhibits the same operations and effects as the seventh embodiment (first embodiment).
• the concave portions 35 in the large number of concave and convex portions may be configured to be classified into two or more types according to the depth of the concave portion 35. Depending on the situation, it may be configured to be classified into two or more types.
• FIG. 11 is a diagram showing a band saw blade according to a tenth example of the embodiment.
• the band saw blade 23x according to the tenth embodiment has substantially the same configuration as the band saw blade 23vii according to the seventh embodiment, and only the differences from the band saw blade 23vii will be described. .
• the bottom surface of the recess 35 is configured to be flat, whereas in the band saw blade 23x according to the tenth embodiment, Is configured such that the bottom surface of the recess 35 is inclined. [0084] Even if the band saw blade 23x according to the tenth embodiment is used, the same cutting method as the seventh embodiment (the cutting method of the first embodiment) can be used. The same operation and effect as the seventh embodiment (first embodiment) are also achieved.
• the bottom surface of the recess 35 is configured to be inclined, the vibration of the band saw blade 23x becomes a smooth movement, and the tipping of the tooth tip of the tooth 31 can be reduced.
• FIGS. 12 (a) and (b) are diagrams showing a band saw blade according to an eleventh example of the embodiment.
• the band saw blade 23xi according to the eleventh embodiment has substantially the same configuration as the band saw blade 23i according to the first embodiment. Only a difference from the first embodiment will be briefly described.
• the saw blade guide device 25 according to the first embodiment includes one backup roller 29, whereas the saw blade guide device 25 according to the eleventh embodiment includes two or three back rollers.
• the up-roller 29 is provided.
• the distance between the centers of the two or three backup rollers 29 is divided by the length P of the concavo-convex portion 33 to be 2 (or an integer of 3 or more). As a result, a large cutting back force can be distributed and received by the two backup rollers 29.
• FIGS. 13 (a) and 13 (b) are diagrams showing a band saw blade according to a twelfth example of the embodiment.
• the band saw blade 23xii according to the twelfth embodiment has substantially the same configuration as that of the band saw blade 23i according to the first embodiment. Only the differences from the first embodiment will be briefly described.
• the saw blade guide device 25 according to the first embodiment is provided with the backup roller 29, whereas the saw blade guide device 25 according to the twelfth embodiment is a backup guide that is another backup guide.
• the saw blade guide device 25 according to the twelfth embodiment is a backup guide that is another backup guide.
• FIG. 14 a thirteenth example of the embodiment will be described with reference to FIGS. 14 (a) and 14 (b).
• FIG. 14
• FIG. 14 (a) is a figure which shows the band saw blade concerning the 13th Example of embodiment
• FIG.14 (b) is a figure along the XlVb-XlVb line
• the band saw blade 23xm according to the thirteenth embodiment has substantially the same configuration as the band saw blade 23i according to the first embodiment and is different from the configuration of the band saw blade 23i. Only the point will be described.
• the recess 35 is formed by cutting or grinding, whereas in the band saw blade 23xiii according to the thirteenth embodiment, the recess 35 is formed by rolling.
• FIG. 15 is a diagram showing a band saw blade according to the fourteenth example of the embodiment
• FIGS. 16A to 16D are schematic diagrams for explaining the operation of the fifteenth example of the embodiment.
• the band saw blade 23xiv according to the fourteenth embodiment is supported by the pair of saw blade guide devices 25 so as to be capable of running, like the band saw blade 23i according to the first embodiment.
• a number of teeth 31 are provided.
• the band saw blade 23xiv is configured such that the length P of the notch portion 41 is not less than the minimum pitch Tmin of the tooth tip in the tooth 31 and not more than four times the maximum pitch Tmax.
• the length of the notch 41 is not more than four times the maximum tip pitch Tmax of the tooth.
• the length of the notch 41 is 4 of the maximum tip pitch Tmax of the tooth 31. This is because the noise value (especially the noise value measured by the C-characteristics) increases when the length is doubled (confirmed by conducting the same experiment as in Experiment 1 above).
• the band saw blade 23xiv is connected to the notch portion 41 when the backup roller 29 is engaged.
• a gap is formed between the top roller 29 and the bottom surface of the notch 41.
• the cutting method according to the fourteenth embodiment will be described including its operation. While the band saw blade 23xiv is supported by the pair of saw blade guide devices 25, the saw blade housing 15 is moved downward while approaching the workpiece W while circulating the band saw blade 23xiv. As a result, the workpiece W can be cut in the cutting area A (see FIG. 19).
• the immersive force with respect to the notch portion 41 of the backup roller 29 is the vibration amplitude S of the band saw blade 23xiv, and this amplitude S is 0.1 mm or more. It is 0.5mm or less. This is because if the vibration amplitude of the band saw blade 23xiv is less than 0.1 mm, the cutting resistance of the workpiece W cannot be reduced sufficiently, while if the amplitude of the vibration of the band saw blade 23xiv exceeds 0.5 mm, This is because the noise value (especially the noise value measured by the C-characteristics) becomes large (confirmed by conducting the same experiment as Experiment 2 above).
• the operation of the tooth 31 biting into the workpiece W and the operation of the tooth 31 scraping off the chip Wa are alternately repeated at short intervals. Therefore, regardless of the size of the workpiece W, the cutting length of the band saw blade 23xiv can be shortened, and the cutting resistance of the workpiece W can be reduced. Therefore, cutting of the band saw blade 23xiv is suppressed As a result, the service life of the band saw blade 23xiv is prolonged and the cutting noise is reduced, thereby improving the working environment.
• FIGS. 17A and 17B are views showing a band saw blade according to the fifteenth example of the embodiment.
• the band saw blade 23xv according to the fifteenth embodiment has substantially the same configuration as the band saw blade 23xiv according to the fourteenth embodiment. Only the differences will be explained.
• the shape of the notch portion 41 is a triangle and the shoulder side of the notch portion 41 is formed in a square shape.
• the shape of the notch portion 41 is corrugated or the shoulder side of the notch portion 41 is configured in an R shape.
• FIG.18 (a) is a figure which shows the band saw blade concerning the 13th Example of embodiment, Comprising: FIG.18 (b) is a figure along the XVIIIb-XVIIIb line
• the band saw blade 23xvi according to the sixteenth embodiment has substantially the same configuration as the band saw blade 23xiv according to the fourteenth embodiment. Only the differences will be described.
• the band saw blade 23xiv according to the fourteenth embodiment when the backup roller 29 is engaged with the notch portion 41, a gap is formed between the backup roller 29 and the bottom surface of the notch portion 41.
• the band saw blade 23xvi according to the sixteenth embodiment is configured such that when the backup roller 29 is engaged with the notch portion 41, the bottom surface of the backup roller 29 and the notch portion 41 come into contact with each other. It is configured. Thereby, in the band saw blade 23xvi, the number of contact points with the knock-up roller 29 is increased, and the cutting back force can be distributed and received by the knock-up roller 29.
• the notch portion 41 is formed by cutting or grinding, whereas in the band saw blade 23xvi according to the sixteenth embodiment, notch The part 41 is formed by rolling.
• the depth B of the notch 41 is the vibration amplitude S of the band saw blade 23xvi.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Sawing (AREA)

Priority Applications (2)

Applications Claiming Priority (4)

Publications (1)

Family

ID=35907512

Family Applications (1)

Country Status (4)

Cited By (3)

Families Citing this family (27)

Citations (3)

Family Cites Families (29)

• 2005
  • 2005-07-14 JP JP2005205905A patent/JP4102817B2/ja not_active Expired - Fee Related
  • 2005-08-18 EP EP05772655.6A patent/EP1795289B1/en not_active Ceased
  • 2005-08-18 WO PCT/JP2005/015056 patent/WO2006019129A1/ja not_active Ceased
  • 2005-08-18 US US11/573,974 patent/US8051756B2/en not_active Expired - Fee Related

Patent Citations (3)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events