JP2012228750A - Electric cutter sharpening machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric cutter sharpening machine capable of attaining the predetermined sharpening angle only by fitting a blade of a cutter held by a hand thereto, easily changing a blade support base for changing the sharpening angle, and executing the rapid sharpening work.SOLUTION: In the electric cutter sharpening machine 1, a rotary sharpening member 9 having a grinding wheel 8 is fixed to a rotary shaft 7 rotated by a drive device for rotation in an integrally rotating manner. A blade support base 43 having a blade supporting face 44 for giving the predetermined sharpening angle to a blade by fitting the blade of a cutter held in a hand thereto is mounted on the electric cutter sharpening machine in a changeable manner.

Description

  The present invention relates to an electric blade sharpening machine that sharpens a knife such as a knife by rotating a polishing grindstone with an electric drive source.

  Blades of knives such as knives have a ridge line that is almost parallel to the edge of the blade near the edge of the blade, and the edge and the edge of the blade are formed on an inclined surface. Do it. The inclined surface of the blade is inclined at a predetermined angle with respect to a vertical line when the blade is erected vertically with the blade edge down, and this inclination angle is referred to as a polishing angle in this specification. Of course, the polishing angles of the blades are not all the same, and differ depending on the application of the blades. For example, a knife has a double-edged thin knife or a single-edged knife, and the polishing angle of the thin knife is smaller than the polishing angle of the knife. Therefore, when polishing, the polishing angle must be changed to correspond to the blade.

  The electric knife sharpening machine described in Patent Document 1 is a sharpening machine capable of changing the polishing angle. This sharpening machine is configured to include a plurality of cages having different holding angles and change the polishing angle by exchanging the cages. Then, the blade to be polished is fixed to the holder, and the holder is attached to the holder with a T-head screw and a nut. When replacing the cage, the T-head screw and nut must be separated and the cage removed, and another cage must be reattached with the T-head screw and nut. Therefore, this operation is complicated, and is troublesome when many kinds of blades having different polishing angles are polished together.

Japanese Patent Laid-Open No. 10-80845

  The present invention provides an electric motor capable of performing a quick polishing operation by simply exchanging the blade support for changing the polishing angle by giving a predetermined polishing angle simply by touching the blade of the cutter held in the hand. The object is to provide a sharpening machine.

  Claim 1 is an electric blade sharpening machine in which a rotating polishing member having a polishing grindstone is fixed to a rotating shaft rotated by a rotation driving device so as to be integrally rotatable. A blade support base having a blade support surface that gives a predetermined polishing angle to the blade by being assigned is attached in a replaceable manner.

  The second aspect of the present invention is a configuration in which the blade support is attached so as to be replaceable without using a separate coupling member.

  According to a third aspect of the present invention, either one of the blade support base and the blade support base has a recess, and the other has a fitting portion that fits into the recess, and the fitting portion is fitted into the recess. Thus, the blade support is attached to the blade support.

  According to a fourth aspect of the present invention, a cover for covering the rotary polishing member is detachably attached to the housing, a blade support base is provided on the cover, and the blade support base is attached to the blade support base in a replaceable manner. it can.

  According to a fifth aspect of the present invention, a guide groove for guiding the blade edge of the blade to the polishing surface of the grinding wheel is provided in the cover, and a blade support base is provided adjacent to the blade insertion opening of the guide groove. is there.

  According to a sixth aspect of the present invention, when the blade support base is attached to the cover, the extension line of the blade support surface extends in the direction of the blade insertion slot of the guide groove.

  A seventh aspect is a structure in which an injection hole for injecting polishing water from the outside of the cover is provided in the cover, and an eighth aspect is a structure in which the injection hole is provided in the center of the cover.

  According to a ninth aspect of the present invention, the cover is attached to the housing so as to entirely cover the rotating polishing member.

  According to a tenth aspect of the present invention, at least a part of the outer periphery of the cover is formed in a conical surface, the guide groove is provided in the conical surface, and the guide groove extends in a substantially generatrix direction of the conical surface and is inserted into the guide groove. The rotary polishing member is attached so that the edge of the blade can be polished.

According to the first aspect of the present invention, a blade support base having a blade support surface that gives a predetermined polishing angle to the blade by attaching the blade of the blade held in the hand is attached in a replaceable manner. Therefore, since a predetermined polishing angle can be obtained simply by placing the blade of the blade held in the hand on the blade support surface, for example, even when a plurality of blades are polished, the operation can be rapidly advanced. Moreover, since the blade support is attached so as to be replaceable, the polishing angle can be changed.

According to a second aspect of the present invention, the blade support is attached so as to be replaceable without using a separate coupling member. For example, since the blade support base is not attached with bolts or nuts, the blade support base can be easily replaced.

According to a third aspect of the present invention, either one of the blade support base and the blade support base has a recess, and the other has a fitting portion that fits into the recess, and the fitting portion is fitted into the recess. Thus, the blade support is attached to the blade support support. Therefore, the blade support can be replaced very quickly.

According to a fourth aspect of the present invention, a cover for covering the rotary polishing member is detachably attached to the housing, and a blade support base is provided on the cover, and the blade support base can be attached to the blade support base in a replaceable manner. . Since the cover is attached, the sharpening water can be prevented from splashing. Moreover, since the blade support base is provided on the cover, it is not necessary to provide a separate structure for providing the blade support base, and one cover can serve two functions.

According to a fifth aspect of the present invention, the cover is provided with a guide groove for guiding the blade edge of the blade to the polishing surface of the polishing grindstone, and a blade support base is provided adjacent to the blade insertion opening of the guide groove. Therefore, the blade can be inserted into the guide groove while the blade is directed to the blade support surface of the blade support base.

According to a sixth aspect of the present invention, when the blade support base is attached to the cover, the extension line of the blade support surface extends in the direction of the blade insertion opening of the guide groove. Therefore, when the blade is inserted into the guide groove, the blade can be inserted into the guide groove smoothly and reliably by first placing the blade on the blade support surface and sliding on the blade support surface.

In claim 7, an injection hole for injecting polishing water from the outside of the cover is provided in the cover, and in claim 8, the injection hole is provided in the center of the cover. Therefore, the polishing water can be supplied to the polishing grindstone without removing the cover. Further, since the cover is not removed, the polishing water can be supplied to the rotary polishing member while the blade support base and the blade support base support are also set on the sharpening machine body.

According to the ninth aspect of the present invention, since the cover is attached to the housing so as to entirely cover the rotary polishing member, it is possible to effectively prevent the polishing water from being scattered.

According to a tenth aspect of the present invention, at least a part of the outer periphery of the cover is formed in a conical surface, the guide groove is provided in the conical surface, and the guide groove extends in a substantially generatrix direction of the conical surface and is inserted into the guide groove. A rotary polishing member is attached so that the edge of the blade can be polished. If the end surface of the disc-shaped polishing wheel is a polishing surface and the polishing wheel is covered with a cover having a substantially flat upper surface, the guide groove must be provided over the entire length of the cover. As a result, since the guide groove becomes long, the amount of grinding water from the guide groove that is being polished increases, which is not preferable. Furthermore, since the guide groove extends to the lower part of the peripheral wall of the cover, the strength of the peripheral wall at that portion is weakened and the possibility of breakage is high. On the other hand, since the guide groove extends substantially in the generatrix direction of the conical surface of the cover, the blade in front of the blade that is ground and in contact with the ground surface is Inclined with respect to the cover so as to gradually move away from the upper surface of the cover. This eliminates the need to provide a guide groove for moving the blade over the entire length of the cover. In other words, since it is only necessary to provide a guide groove having the same length as the bus bar of the polishing surface, the amount of exposure from the guide groove of the polishing grindstone can be reduced. Can be prevented. Moreover, since the length of the guide groove is short, the strength of the cover does not become weak.

It is the perspective view seen from the front side of the present invention. It is a right view of the present invention. It is a top view of the present invention. It is AA sectional drawing in FIG. It is a perspective view of a grinding wheel. It is a center sectional view of a grinding wheel. It is a perspective view of a cover. It is a perspective view of the blade support stand attached to a cover. It is the perspective view which looked at the blade support stand from the lower side. It is a perspective view which shows the engagement structure with the cover provided in the sharpening machine main body. It is a perspective view which shows the engagement structure with the sharpening machine main body provided in the cover. It is the perspective view which showed the state which grind | polishes one surface of a blade. It is the perspective view which showed the state which grind | polishes the other surface of a blade.

  The sharpening machine 1 includes a sharpening machine main body 2, a cover 3, and a drainage container 4. As shown in FIG. 4, the sharpening machine main body 2 has a housing 5, and a motor 6 is provided in the housing 5. A rotating polishing member 9 having a polishing grindstone 8 is attached to a rotating shaft 7 of the motor 6 so as to be integrally rotatable. The housing 5 is formed to rise obliquely at a predetermined angle with respect to the bottom surface 10 thereof, and the rotary shaft 7 is also inclined at the same predetermined angle. The inclination angle with respect to the vertical line is about 35 degrees, but is not limited to this value. The housing 5 has an upper surface portion 11, and the rotary polishing member 9 rotates above the upper surface portion 11. The upper surface portion 11 prevents sharpening water from entering the housing 5. A drainage port 12 is provided in the upper surface part 11, and a drainage pipe 13 is attached to the drainage port 12, and drainage received by the upper surface part 11 is discharged to the outside of the housing 5. A drainage container 4 for collecting the discharged wastewater is detachably attached to the outer surface of the housing 5. The drainage container 4 has an opening 15 on a side surface, and a drainage pipe 13 is inserted into the opening 15. A protrusion (not shown) for holding the container is provided on the outer surface of the sharpening machine main body 2 in contact with the drainage container 4, and the drainage container 4 is provided with a hole (not shown) that engages with the protrusion. The drainage container 4 is attached to the sharpening machine main body 2 by the engagement between the protrusion and the hole. The drainage container 4 also rises from the bottom surface 16 so as to be inclined at the same angle as the housing 5. The drainage container 4 is provided with a detachable lid 17. The blade is polished by inserting the blade into the guide groove 38 of the cover 3, and the drainage container 4 is attached to the side opposite to the side where the guide groove 38 is provided. Thereby, the drainage container 4 does not interfere with the polishing operation during polishing. Reference numeral 14 denotes a part of the electric cord.

  As shown in FIGS. 5 and 6, the rotary polishing member 9 has a circular polishing grindstone 8 fixed to the surface of a circular substrate 18 with an adhesive, and its polishing surface 19 is formed in a conical surface. The substrate 18 is made of metal, and the polishing wheel 8 is made of a material having water permeability. As a material having water permeability, white alundum count 320, whose abrasive grains are alumina-based abrasive grains, is used, but other materials may be used, for example, a natural water grindstone. The grinding wheel 8 has a maximum diameter of about 135 mm and a maximum thickness of about 24 mm. Note that the method for fixing the polishing grindstone 8 is not limited to an adhesive, and other methods such as bonding with a metal fitting such as a bolt may be used.

As shown in FIG. 6, the rotary polishing member 9 has a space 20 for storing sharpening water therein. The space 20 is surrounded by an inner surface 21. The inner surface 21 is formed as an inclined surface that is inclined inward, and the void 20 forms a truncated cone shape that spreads at the bottom. A polishing water inlet 22 is formed in the upper center of the grinding wheel 8. Sharpening water is injected into the cavity 20 from the inlet 22. Since the inner surface 21 is inclined inward, the inner diameter of the injection port 22 is naturally smaller than the inner diameter of the bottom of the cavity 20. The inner diameter of the inlet 22 is about 54 mm, and the inner diameter of the bottom of the cavity 20 is about 88 mm, but is not limited to these values. In the state of FIG. 6, the inclination angle of the conical surface which is the polishing surface 19 of the polishing wheel 8, that is, the inclination angle of the polishing surface 19 with respect to the substrate 18 which is the horizontal surface of the rotating polishing member 9 is about 35 degrees. Further, as shown in FIG. 4, the housing 5 stands up in an oblique direction about 35 degrees with respect to the vertical line, so that the inclination angle of the rotating shaft 7 extending obliquely at the same angle as the housing 5 is also about 35 degrees. . As a result, the bus bar 23 at the highest position of the polishing surface 19 is horizontal. If the blade is polished in the vicinity of the bus bar 23, it is possible to polish the blade while keeping the entire blade horizontal, so that the operation is easy.

The sharpening machine 1 includes means for preventing the polishing water splashing from the polishing surface 19 from splashing outside. One of the means is an upper peripheral wall 25 extending circumferentially on the upper surface portion 11 of the housing 5. The upper peripheral wall 25 prevents sharpening water mainly scattered in the horizontal direction from being scattered outside. Another means is the cover 3. The cover 3 prevents sharpening water that mainly scatters upward and horizontally from splashing outside.

The cover 3 can be detachably attached to the upper peripheral wall 25 of the housing 5. The cover 3 is attached to the housing 5 by fitting the peripheral wall 26 of the cover 3 to the outside of the upper peripheral wall 25. Means for preventing the cover 3 from being detached from the housing 5 is provided in the cover 3 and the housing 5. As shown in FIG. 11, an engagement protrusion 27 for preventing separation is provided on the inner surface of the peripheral wall 26 of the cover 3. The engaging protrusion 27 is provided with a locking groove 28. Further, as shown in FIG. 10, a recess 29 for preventing detachment is provided on the surface of the upper peripheral wall 25 extending circumferentially on the upper surface portion 11 of the housing 5. The concave portion 29 has an introduction port 30 for introducing the engaging convex portion 27 of the cover 3 and an engaging concave portion 31 for engaging the engaging convex portion 27. The engaging recess 31 is provided with a locking projection 32. Reference numeral 33 denotes a safety switch that can be moved in and out, and when it protrudes as shown in FIG. 10, the motor 6 does not rotate even if the drive switch 34 is pressed. When the cover 3 is attached to the housing 5, the engaging convex portion 27 of the cover 3 is introduced into the concave portion 29 from the introduction port 30 of the housing 5, and then the cover 3 is rotated in the direction of the engaging concave portion 31. When fully rotated, if the safety switch 33 is immersed and the drive switch 34 is pressed, the motor 6 rotates. Further, the locking protrusion 32 of the housing 5 is locked in the locking groove 28 of the cover 3, thereby preventing the cover 3 from easily rotating backward. Note that reference numeral 35 in FIG. 10 and reference numeral 36 in FIG. 11 are alignment protrusions, and when the alignment protrusions 35 and 36 completely overlap, the engagement protrusion 32 of the housing 5 is inserted into the engagement groove 28 of the cover 3. Can be confirmed. This engagement structure is also provided in the outer peripheral portion on the opposite side, but the safety switch 33 and the alignment protrusions 35 and 36 are not provided.

A part of the outer periphery of the cover 3 is formed on the conical surface 37. The inclination angle of the conical surface 37 is substantially equal to the inclination angle of the polishing surface 19 of the polishing wheel 8. A guide groove 38 is formed on the conical surface 37. The guide groove 38 is constituted by guide groove inner surfaces 40 and 41 which are one surface in the groove and an upper surface portion 42 which is the other surface. One guide groove inner surface 41 of the guide groove inner surfaces 40 and 41 formed at both ends of the guide groove 38 is constituted by the upper peripheral wall 25 of the housing 5. Since the polishing surface 19 of the polishing grindstone 8 is viewed from the guide groove 38, the blade can be polished by inserting the blade from the blade insertion port 39 of the guide groove 38. The vertical width of the insertion slot 39 is about 7 mm, which is a size that a finger cannot enter. As shown in FIG. 3, since the guide groove 38 extends in the generatrix direction of the conical surface 37 of the cover 3, the knife 52 is moved while moving the knife 51 along the generatrix direction as shown in FIG. To polish. By making the entire cover 3 or the upper surface portion 42 of the guide groove 38 transparent, the polishing state can be visually observed.

A blade support base 43 is detachably attached to a conical surface 37 adjacent to the blade insertion slot 39. As shown in FIG. 8, the blade support base 43 has a blade support surface 44 having a predetermined inclination angle. As shown in FIG. 9, the blade support base 43 has a substantially semicircular fitting portion 45. As shown in FIG. 7, a blade support base receiver 46 for attaching the blade support base 43 to the conical surface 37 of the cover 3 is formed. The blade support base 46 is formed with a substantially semicircular recess 47, and the blade support base 43 is attached to the cover 3 by fitting the fitting portion 45 of the blade support base 43 into the recess 47. be able to. When the blade support base 43 is attached to the cover 3, the downward extending line of the inclined blade support surface 44 extends to the blade insertion opening 39 of the guide groove 38. When the blade is inserted into the guide groove 38 from the blade insertion port 39 while the blade is directed to the surface of the blade support surface 44, the blade is addressed to the polishing surface 19 at the same polishing angle as the inclination angle of the blade support surface 44. Polished. The angle of inclination of the blade support surface 44 with respect to the polishing surface 19 is about 16 degrees and the polishing angle is also about 16 degrees. This angle is preferable for a thin blade knife used for cooking at home, for example. Since the thin blade knife grinds both sides of the blade, when both surfaces are ground at a polishing angle of 16 degrees, the cutting edge angle, which is the angle of the cross section of the blade edge of the knife, is 32 degrees. By exchanging the plurality of blade support bases 43 having different inclination angles of the blade support surface 44 in accordance with the blades, preferable polishing can be obtained. For example, if a blade support surface 44 having an inclination angle of 22 degrees is prepared, a preferable polishing angle of the cutter blade can be obtained. Since the leading knife only grinds one side of the blade, if the grinding angle is 22 degrees, the cutting edge angle is 22 degrees. It goes without saying that the inclination angle of the blade support surface 44 is not limited to these numerical values, and an optimum cutting blade angle corresponding to the application can be obtained by setting other values. Also, by first polishing the blade with a relatively small sharp angle, and then exchanging the blade support 43 and polishing with a relatively large sharp angle, the cutting edge angle near the edge of the blade is changed and double-staged. Blade attachment is possible.

In the center of the cover 3, an injection hole 48 for injecting polishing water into the space 20 of the rotary polishing member 9 is provided. The injection hole 48 is provided with a wheel-like rib 49. This is to prevent the sharpening water from splashing from the injection hole 48 during polishing. As shown in FIG. 4, the polishing water injected from the injection hole 48 is injected into the cavity 20 through the injection port 22 of the rotary polishing member 9. The cover 3 is provided with an inner wall 50 inside the peripheral wall 26. This is because the cover 3 can be removed after use and easily washed away if the scouring water that is scattered is attached to the inner wall 50.

The sharpening water collected in the space 20 of the rotary polishing member 9 gathers in a low place of the space 20 because the rotary polishing member 9 is inclined. When the rotary polishing member 9 is rotated at a high speed in this state, centrifugal force is applied to the polishing water, and the inner surface 21 of the cavity 20 in contact with the polishing water is rotating at a high speed, so that the polishing water is stuck to the inner surface 21. Rotate with. Since the polishing wheel 8 has water permeability, the polishing water that has permeated from the inner surface 21 passes through the polishing wheel 8 by the centrifugal force and exudes to the polishing surface 19. Since the polishing water is given the same rotational inertia as the rotation of the polishing grindstone 8 while passing through the inside of the polishing grindstone 8, the polishing water that has oozed out on the polishing surface 19 rotates while rotating at the same rotation as the polishing grindstone 8. Then, it gradually moves in the outer peripheral direction of the polishing surface 19 by centrifugal force. However, even if the sharpening water moves in the outer circumferential direction, the edge of the blade comes into contact immediately, so the amount of movement of the sharpening water in the outer circumferential direction is small. Therefore, the polishing water hardly scatters from the outer periphery of the polishing surface, and the polishing water necessary for polishing is efficiently supplied.

Next, an example of the usage method of the present invention will be described with reference to FIGS. These drawings show a method for polishing a thin knife for cooking. Thin blade knives need to be sharpened on both sides of the blade. FIG. 12 shows a case where one surface of the blade is polished. When the sharpening machine 1 is used, the sharpening machine 1 is placed so that the blade insertion opening 39 of the guide groove 38 faces the operator. Next, polishing water is injected into the injection hole 48 of the cover 3 and an appropriate amount is stored in the space 20 of the rotary polishing member 9. Next, the handle 55 of the knife 51 is grasped with the right hand, and the drive switch 34 is pressed to turn it on. The polishing grindstone 8 rotates at about 500 revolutions per minute, but is not limited to the number of revolutions. Further, the rotational speed may be variable. As the polishing grindstone 8 rotates, the polishing water exudes to the polishing surface 9 so that the blade base 53 of the blade 52 is inserted into the guide groove 38 from the blade edge 54. At that time, the blade 52 is directed to the blade support surface 44 of the blade support base 43 to determine the polishing angle, and the surface of the blade edge 54 is polished by the polishing surface 9 while pulling the knife 51 in the direction of the arrow. The knife is stabilized when the left hand that is open when polishing is attached to the blade 52. If the knife 51 is polished while being pulled slowly, the blade can be brought into a good state only by pulling the knife once. Of course, the knife 51 may be polished for several reciprocations. When the polishing of one surface of the blade 52 is finished, the knife 51 is moved to the left hand as shown in FIG. 13 and the other surface of the blade 52 is pulled while pulling the knife 51 in the direction of the arrow in the same manner as described above. To polish. At that time, the drive switch 34 may remain on and may be changed. Alternatively, the drive switch 34 may be turned off once and then turned on again.

In the method of using the sharpening machine 1 described above, the blade insertion opening 39 faces the operator as shown in FIG. As is clear from FIG. 2, in the sharpening machine 1 placed, the blade insertion port 39 and the blade support base 43 are provided in the highest region, and the upper surface 56 of the cover 3 is inclined downwardly from there. The left outer peripheral surface 57 of the housing 5 is inclined downward to the left. Since the knife 51 is kept horizontal when the knife 51 is polished, as shown in FIG. 12, when holding the knife 51 in the right hand and polishing, the knife 55 between the handle 55 of the horizontal knife 51 and the upper surface 55 of the cover 3 Since a triangular space is formed as seen in FIG. 2, the right hand holding the knife 51 during polishing is not interfered with the upper surface 56 of the cover 3 and is easy to use. At this time, in order to stabilize the knife 51, it is preferable to attach a left hand to the blade 52, but the attached left hand is not interfered with the outer peripheral surface 57 on the left side of the housing 5. Further, when the knife 51 is held with the left hand as shown in FIG. 13, a triangular space is formed between the handle 55 of the horizontal knife 51 and the outer peripheral surface 57 on the left side of the housing 5 as shown in FIG. Therefore, the left hand holding the knife 51 during polishing is not interfered with the outer peripheral surface 57 on the left side of the housing 5 and is easy to use. At this time, it is preferable to attach a right hand to the blade 52 in order to stabilize the knife 51, but the attached right hand is not interfered with the upper surface 56 of the cover 3. That is, even if the knife 51 is held with either the left or right hand, the housing 5 and the cover 3 do not interfere with the hand or the handle 55, so that the polishing operation can be performed smoothly.

  In addition, this invention can take a various aspect based on the structure mentioned above. For example, the blade to be polished is not limited to the blade of a kitchen knife, and may be, for example, a blade of a scissors, a knife, or a carving sword. When a blade different from the knife is to be polished, a corresponding blade support base 43 is prepared. Further, when the length of the edge of the blade is shorter than the polishing surface like a sword, it can be polished while the sword is fixed during polishing.

An electric blade sharpener that gives a predetermined polishing angle just by touching the blade of the tool you have in your hand, and can easily replace the blade support to change the polishing angle and perform quick polishing work Can provide.

  DESCRIPTION OF SYMBOLS 1 Sharpening machine, 2 Sharpening machine main body, 3 Cover, 4 Drainage container, 5 Housing, 6 Motor, 7 Rotating shaft, 8 Grinding grindstone, 9 Rotating grinding member, 10 Bottom surface of housing, 11 Upper surface part of housing, 12 Drainage port, 13 drainage pipe, 14 part of electric cord, 15 opening, 16 bottom surface of drainage container, 17 lid, 18 substrate, 19 polishing surface, 20 void, 21 inner surface, 22 inlet, 23 busbar, 24 holes, 25 upper peripheral wall , 26 peripheral wall, 27 engaging projection, 28 locking groove, 29 recess, 30 inlet, 31 engaging recess, 32 locking projection, 33 safety switch, 34 drive switch, 35 alignment projection, 36 positioning projection, 37 conical surfaces, 38 guide grooves, 39 Blade insertion slot, 40 Guide groove inner surface, 41 Guide groove inner surface, 42 Guide groove upper surface portion, 43 Blade support base, 44 Blade support surface, 45 Fitting portion, 46 Blade support base receiver, 47 Recessed portion, 48 Injection hole , 49 rib, 50 inner wall of the cover, 51 knife, 52 knife blade, 53 blade base, 54 blade edge, 55 knife handle, 56 cover upper surface, 57 outer peripheral surface on the left side of the housing

Claims (10)

A rotary polishing member having a polishing wheel is an electric blade sharpening machine fixed to a rotating shaft rotated by a rotation driving device so as to be integrally rotatable, and by applying a blade of a blade held in a hand An electric blade sharpening machine characterized in that a blade support base having a blade support surface that gives a predetermined polishing angle to the blade is attached in a replaceable manner. The electric blade sharpener according to claim 1, wherein the blade support is attached so as to be replaceable without using a separate coupling member. Either one of the blade support base and the blade support base has a recess, and the other has a fitting portion that fits into the recess, and the blade support base is fitted by fitting the fitting portion into the recess. The electric blade sharpening machine according to claim 2, which is attached to the blade support base. A cover for covering the rotary polishing member is detachably attached to the housing, and a blade support base is provided on the cover, and the blade support base can be attached to the blade support base in a replaceable manner. The electric blade sharpener according to any one of claims 3 to 4. The electric cutter according to claim 4, wherein a guide groove for guiding the edge of the blade to the polishing surface of the grinding wheel is provided on the cover, and a blade support base is provided adjacent to the blade insertion opening of the guide groove. Sharpening machine. The electric blade sharpening machine according to claim 5, wherein when the blade support base is attached to the cover, an extension line of the blade support surface extends in a direction of the blade insertion opening of the guide groove. The electric blade sharpener according to any one of claims 1 to 6, wherein an injection hole for injecting polishing water from the outside of the cover is provided in the cover. The electric blade sharpener according to claim 7, wherein the injection hole is provided in the center of the cover. The electric blade sharpener according to any one of claims 4 to 8, wherein the cover is attached to the housing so as to cover the rotary polishing member entirely. At least a part of the outer periphery of the cover is formed in a conical surface, the guide groove is provided in the conical surface, and the guide groove extends substantially in the generatrix direction of the conical surface, and the edge of the blade inserted into the guide groove The electric blade sharpener according to any one of claims 4 to 9, wherein a rotary polishing member is attached so that the polishing can be polished.

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