WO2004020145A1 - Dispositif de meulage d'instruments tranchants - Google Patents

Dispositif de meulage d'instruments tranchants Download PDF

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Publication number
WO2004020145A1
WO2004020145A1 PCT/JP2003/010838 JP0310838W WO2004020145A1 WO 2004020145 A1 WO2004020145 A1 WO 2004020145A1 JP 0310838 W JP0310838 W JP 0310838W WO 2004020145 A1 WO2004020145 A1 WO 2004020145A1
Authority
WO
WIPO (PCT)
Prior art keywords
polishing
blade
strip
cutting edge
strip portions
Prior art date
Application number
PCT/JP2003/010838
Other languages
English (en)
Japanese (ja)
Inventor
Takashi Suzuki
Original Assignee
Yoshida Metal Industry Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yoshida Metal Industry Co., Ltd. filed Critical Yoshida Metal Industry Co., Ltd.
Publication of WO2004020145A1 publication Critical patent/WO2004020145A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/06—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges
    • B24D15/08—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of knives; of razors

Definitions

  • the present invention relates to a blade polishing device.
  • a tool having two rollers 10 and 10 is known as a tool for sharpening the cutting edge of a tool.
  • Each roller 10 is supported by a rotating shaft 12, and a polished surface is formed on an outer peripheral surface thereof.
  • the rotating shafts 12 and 12 are arranged in parallel with each other, and the ports 10 and 10 are rotated with their polished surfaces meshing with each other.
  • a groove having a V-shaped cross section is formed between the polishing surfaces of the rollers 10, 10, and the groove extends along the rotation axis 12.
  • the sharpness of the blade 14 becomes worse not only when the blade 16 is rounded but also when the blade 16 is warped as shown in FIG.
  • the warped blade 14 of the cutting edge 16 is sharpened using the above-described conventional blade polishing device, the whole warped portion near the cutting edge 16 (hereinafter referred to as “flipped” and denoted by reference numeral 18) is ground.
  • the edge 16 wears out quickly and shortens the life of the blade 14.
  • the cutting edge 16 of the cutting tool 14 is partially chipped or is locally concave when viewed along the longitudinal direction due to improper sharpening. There is.
  • the chipped or recessed portion of the cutting edge 16 does not contact the polished surface of the rollers 10 and 10.
  • An object of the present invention is to provide a blade polishing apparatus capable of sharpening a blade in a short time and prolonging the life of the blade.
  • a blade polishing device of the present invention is a blade polishing device for polishing a cutting edge of a blade, the device including a polishing member, wherein the polishing member has two polishing surfaces, A polishing passage defined between the polishing surfaces and having a V-shaped polishing passage for receiving a cutting edge of a blade, wherein the polishing member is at least a pair of strip portions, each of which has the polishing surface on one surface; And a joint portion for connecting and crossing the strip portions to define the polishing passage between the polishing surfaces, wherein the polishing member is defined between the polishing surfaces when the blade is polished.
  • the change of the angle to be performed is allowed, and the polishing surface is pressed against the blade.
  • the angle defined between the polishing surfaces (hereinafter referred to as a V-shaped angle) changes according to the state of the blade edge. Specifically, when the cutting edge of the blade is warped, that is, when the blade is turned, the V-shaped angle changes in the increasing direction. Under these abutting conditions, when the device and the cutter are relatively moved along the polishing passage, since the polishing surface is pressed against the cutter, the curl is corrected and straightened as before.
  • this device According to this, the cutting edge is polished without removing the entire burr by polishing, the cutting edge can be sharpened in a short time, and the consumption of the cutting edge due to polishing is suppressed, so that the life of the cutting edge can be prolonged. it can.
  • the V-shaped angle also changes and the polishing surface is pressed against the locally concave portion of the blade as viewed in the longitudinal direction of the blade, so that the entire blade is Can be sharpened sharply.
  • a plurality of pairs of the strip portions are arranged along the polishing passage, because the edge is securely guided in the longitudinal direction of the polishing passage and sharply polished during polishing.
  • the V-shaped angle can be changed during polishing, and the polished surface can be pressed against the blade.
  • the joint portion elastically connects the strip portions, so that the V-shaped angle can be changed during polishing, and the polished surface can be pressed against the blade.
  • the strip part and the joint part may be formed integrally, and the joint part may include an elastic member such as a coil spring or a leaf spring.
  • the polishing member can be easily replaced.
  • the blade can be sharpened sharply in a shorter time.
  • polishing surface on the other surface of the strip portion, that is, on the outer surface, since this device can be used as a plate-like polishing device.
  • the polished surface should be diamond or titanium nitride It is preferable that the particles include particles made of a metal.
  • FIG. 1 is a schematic configuration diagram of a conventional blade polishing apparatus
  • FIG. 2 is an enlarged view of the vicinity of the blade edge for explaining a state in which the blade edge of the blade is warped
  • FIG. 3 is a perspective view of the blade polishing device of the first embodiment
  • FIG. 4 is a plan view of the device of FIG. 3,
  • FIG. 5 is a diagram for explaining the angle change between the polishing surfaces in the apparatus of FIG. 3
  • FIG. 6 is an enlarged view of the vicinity of the cutting edge of the blade polished by the apparatus of FIG. 3
  • FIG. FIG. 8 is a plan view of a polishing member in the blade polishing apparatus according to the third embodiment
  • FIG. 8 is a plan view of a polishing member in the blade polishing apparatus according to the third embodiment
  • FIG. It is a top view of a grinding member.
  • FIG. 3 and 4 show a blade polishing apparatus (hereinafter, simply referred to as an apparatus) according to a first embodiment of the present invention. As shown by the two-dot chain line in the figure, this apparatus is used, for example, for sharpening the cutting edge 16 of the preparation blade 14, but can also be applied to various blades such as outdoor knives.
  • This device includes a handle 20 made of resin, for example.
  • the handle 20 has a substantially elliptical cross section so as to be easily gripped, and the handle 20 is provided with irregularities on its outer peripheral surface.
  • a head 22 is detachably connected to one end of the handle 20. More specifically, the head 22 has a bottomed cylindrical fitting 24, into which the tip of the handle 20 is inserted. Two through holes are formed in the peripheral wall of the metal fitting 24, and spherical latches 26, 26 provided at the tip of the handle 20 are fitted into these through holes, and the handle 20 and the head 22 are fitted. Are connected to each other. Latch 2 6 is urged outward by a built-in panel (not shown) so as to protrude from the outer peripheral surface of the handle 20. When the latch 26 is pushed in, the handle 20 is removed from the head 22. be able to.
  • the head 22 has a sharpener 28 made of stainless steel, and the sharpener 28 is fixed to the bottom wall of the bracket 24 via a screw 29.
  • the sharpener 28 is formed by bending a belt-shaped stainless steel plate at the center in the longitudinal direction, and has a substantially U-shaped curved portion 30 fixed to the metal fitting 24, and a pair of plate portions integrally extending from the curved portion 30. It consists of 32, 34.
  • One slit 36 is formed in one plate portion 32, and the slit 36 extends in the longitudinal direction from the tip of the plate portion 32 toward the curved portion 30. Notches 38 cut out along slits 36 are formed on both side edges of the plate portion 32. For this reason, the plate portion 32 has two strip portions 40 separated by the slits 36 in the width direction of the plate portion 32.
  • two slits 42 are formed in the other plate portion 34.
  • the slits 42 extend in the longitudinal direction from the tip of the plate portion 34 toward the curved portion 30 and are separated from each other in the width direction. For this reason, the plate part 34 has three strip parts 44 separated in the width direction by these slits 42.
  • the slits 36 of the plate portion 32 receive the central strip portion 44 of the plate portion 34, and the slits 42 of the plate portion 34 form the strip portions 40 of the plate portion 32. Each can be accepted.
  • the curved portion 30 is bent at an appropriate angle so that the strip portions 40 and 44 intersect at an acute angle when the plate portions 32 and 34 engage with each other as described above. ing. Accordingly, the strip portions 40 and 44 together form a V-shaped V-groove 48 that opens from the intersection 46 where they intersect to the tip side of the plate portions 32 and 34.
  • the V-groove 48 extends in the width direction of the plate portions 32, 34.
  • the plate portions 3 2 and 3 4 are each formed in a flat fork shape.
  • the reference numerals 32 and 34 are supported by the curved portion 30 in a mutually engaged state.
  • Polished surfaces 50 are formed on almost the entire area of both sides of the strip portions 40 and 44. As described above, since the strip portions 40 and 44 intersect, the polished surfaces 50 formed on their surfaces also intersect. Therefore, the V groove 48 is formed between the polished surfaces 50.
  • the polished surface 50 contains, for example, abrasive grains having an appropriate particle size so that the surface roughness is equivalent to # 300.
  • the material of the abrasive grains is not particularly limited, but is preferably diamond or titanium nitride because of its high strength.
  • the strip portions 40 and 44 and the curved portion 30 have elasticity. Therefore, as schematically shown in FIG. 5, the strip portions 40, 44 are deformed or deformed by the elasticity of the strip portions 40, 44 themselves or the elasticity of the bent portion 30, or both. And displacement are possible. Therefore, in the sharpener 28, the intersection portion 46 can move along the strip portions 40 and 44, that is, the longitudinal direction of the device, and with the movement of the intersection portion 46, Angle between polished surfaces 50, that is, V groove
  • the V-shaped angle of 4 8 can be changed.
  • This sharpener 28 can be manufactured, for example, as follows. First, strips 40 and 44 are formed by cutting both ends of a strip-shaped material made of stainless steel, for example. Next, the material is bent into an arc shape at the center in the longitudinal direction of the material so that the strip portions 40 and 44 intersect to form a curved portion 30. Then, the material on which the strip portions 40 and 44 and the curved portion 30 are formed is subjected to quenching and tempering at an appropriate temperature to give the strip portions 40 and 44 and the curved portion 30 elasticity. Is given. Thereafter, a polished surface 50 containing abrasive grains is formed on the surfaces of the strip portions 40 and 44 by electrodeposition, adhesion, vapor deposition, or the like, and a sharpener 28 is manufactured.
  • the blade 16 can be sharply ground in a short time, and the life of the blade 14 can be extended.
  • the cutting edge 16 is straightened and polished as before. Therefore, according to this apparatus, the cutting edge 16 is sharply polished in a short time without removing the entire burr 18 by polishing, and the consumption of the cutting edge 16 by polishing is suppressed, so that the cutting tool 14 is formed. long lasting.
  • the V-groove 48 Since the V-shaped angle changes, while the cutting edge 16 passes through the V-groove 48, the polishing surface 50 continuously contacts the cutting edge 16 to polish the entire longitudinal direction of the cutting edge 16. Therefore, according to this device, the cutting edge 16 of the cutting tool 14 is reliably polished sharply. Further, in this apparatus, since the strip portions 40 and 44 have elasticity, the polished surfaces 50 of the strip portions 40 and 44 can contact the blade edge 16 independently of each other. Therefore, according to this apparatus, the cutting edge 16 is efficiently polished while passing through the V groove 48 once.
  • the strip portions 40 and 44 are arranged in the width direction of the plate portions 32 and 34, and the V-grooves 48 have an appropriate length corresponding to the width of the plate portions 32 and 34.
  • the blade 14 is reliably guided in the longitudinal direction of the V-shaped groove 48 during the relative movement. Therefore, according to this apparatus, the cutting edge 16 is reliably polished.
  • the head 22 is detachable, so that the head 22 is easily replaced.
  • a plurality of heads 22 having different roughnesses of the polished surface 50 for example, heads 22 for rough grinding, medium grinding, and finishing are prepared, and the heads 22 are formed according to the state of the cutting edge 16. If selected, the knife 14 will be sharpened sharply in a shorter time.
  • the pressing force between the device and the blade 14 is unconsciously or consciously based on the tactile sensation via the handle 20. Can be adjusted appropriately. Therefore, if the user is proficient in the operation of this device, the blade 14 can be sharply sharpened in a shorter time.
  • the polished surface 50 is formed not only on the inner surfaces of the strip portions 40 and 44 forming the V-grooves 48, but also on the outer surfaces of the strip portions 40 and 44. Is also used as a plate-like polishing device.
  • the present invention is not limited to the above-described embodiment, but can be variously modified.
  • the number of the strip portions 40 and 44 may be appropriately changed.
  • At least one of the strip portions 40, 44 and the curved portion 30 may have elasticity. However, it is preferable that both the strip portions 40, 44 and the curved portion 30 have elasticity, because the polished surface 50 can more reliably come into close contact with the top of the cutting edge 16.
  • the plate portions 32 and 34 are connected to each other by an elastic member such as a coil spring 52 or a plate spring 54.
  • the plate portions 32 and 34 are also elastically supported by the coil spring 52 and the plate spring 54 and the like.
  • the head 22 further includes a suitable member (not shown) for connecting the bracket 24 and the sharpener 28.
  • a resin block material 56 may be disposed between the plate portions 32 and 34. The bases of the plate portions 32 and 34 are fixed to the block material 56 via screws, and are rigidly supported by the block material 56.
  • a screw hole (not shown) is formed in the block material 56, and a screw 29 is screwed into the screw hole from the handle 20 side of the metal fitting 24 so that the head 2 2 And the handle 20 can be connected.
  • the polished surfaces 50 are formed on both sides of the strip portions 40 and 44, but are formed only on the inner surfaces of the strip portions 40 and 44 forming the V grooves 48. It may be. However, if it is formed on both surfaces of the strip portions 40, 44, the device can be used as a simple plate-shaped blade polishing device using the outer polishing surface 50 of the strip portions 40, 44. For this reason, it is preferable to form the polished surfaces 50 on both sides of the strip portions 40, 44.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

L'invention concerne un dispositif de meulage permettant de meuler la pointe d'un instrument tranchant et comprenant un élément de meulage (28) présentant deux surfaces de meulage (50, 50), un passage de meulage en forme de V (48) formé entre lesdites surfaces (50, 50) et recevant la pointe de l'instrument tranchant, ainsi qu'au moins deux parties de bande (40, 44) présentant, sur une surface, les surfaces de meulage (50) et une partie de connexion (30) reliant de manière transversale lesdites parties (40, 44) l'une à l'autre, de manière à former le passage de meulage (48) entre les surfaces de meulage (50, 50). Un tel dispositif est caractérisé en ce que, pendant le meulage d'un instrument tranchant, l'élément de meulage (28) permet de modifier l'angle formé entre les surfaces de meulage (50, 50) et il pousse les surfaces de meulage (50, 50) contre l'instrument tranchant.
PCT/JP2003/010838 2002-08-30 2003-08-27 Dispositif de meulage d'instruments tranchants WO2004020145A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002-255042 2002-08-30
JP2002255042A JP2004090169A (ja) 2002-08-30 2002-08-30 刃物用研器

Publications (1)

Publication Number Publication Date
WO2004020145A1 true WO2004020145A1 (fr) 2004-03-11

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ID=31972864

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2003/010838 WO2004020145A1 (fr) 2002-08-30 2003-08-27 Dispositif de meulage d'instruments tranchants

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Country Link
JP (1) JP2004090169A (fr)
WO (1) WO2004020145A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3925658B2 (ja) * 2004-10-04 2007-06-06 吉田金属工業株式会社 刃物研磨装置
KR100780928B1 (ko) * 2007-11-05 2007-11-30 한밭대학교 산학협력단 자동연마기

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB131130A (en) * 1918-08-12 1919-08-12 Jones William T Improvements in Knife Sharpeners.
US2413156A (en) * 1945-09-12 1946-12-24 Mathias J Gehen Sharpening device
FR2556638A1 (fr) * 1983-12-20 1985-06-21 Alsacienne Constr Mat Tex Appareil a affuter, pour l'affutage de la lame de coupe sur une machine a tisser le velours double nappe
JPS6219153U (fr) * 1985-07-20 1987-02-04
EP1329291A2 (fr) * 2001-10-18 2003-07-23 Furitechnics Pty Ltd. Dispositif d'affûtage de lames et de couteaux

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB131130A (en) * 1918-08-12 1919-08-12 Jones William T Improvements in Knife Sharpeners.
US2413156A (en) * 1945-09-12 1946-12-24 Mathias J Gehen Sharpening device
FR2556638A1 (fr) * 1983-12-20 1985-06-21 Alsacienne Constr Mat Tex Appareil a affuter, pour l'affutage de la lame de coupe sur une machine a tisser le velours double nappe
JPS6219153U (fr) * 1985-07-20 1987-02-04
EP1329291A2 (fr) * 2001-10-18 2003-07-23 Furitechnics Pty Ltd. Dispositif d'affûtage de lames et de couteaux

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