EP4210901A1 - Magnet-schleiflehre mit elastischem kontaktelement - Google Patents
Magnet-schleiflehre mit elastischem kontaktelementInfo
- Publication number
- EP4210901A1 EP4210901A1 EP21773745.1A EP21773745A EP4210901A1 EP 4210901 A1 EP4210901 A1 EP 4210901A1 EP 21773745 A EP21773745 A EP 21773745A EP 4210901 A1 EP4210901 A1 EP 4210901A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnetic
- contact element
- magnetic grinding
- blade
- grinding gauge
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000005498 polishing Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000004033 plastic Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 5
- 244000043261 Hevea brasiliensis Species 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000000806 elastomer Substances 0.000 claims description 4
- 229920003052 natural elastomer Polymers 0.000 claims description 4
- 229920001194 natural rubber Polymers 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000004945 silicone rubber Substances 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 description 11
- 229920001296 polysiloxane Polymers 0.000 description 7
- 230000005489 elastic deformation Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- 241000218657 Picea Species 0.000 description 1
- 244000040384 Quercus garryana Species 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
- B24B3/54—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of hand or table knives
- B24B3/543—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of hand or table knives using hand or foot driven tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
- B24B3/54—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of hand or table knives
- B24B3/546—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of hand or table knives the tool being driven in a non-rotary motion, e.g. oscillatory, gyratory
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- 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
-
- 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
- B24D15/084—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of knives; of razors the sharpening elements being fitted to knife sheaths, holders or handles
Definitions
- the present invention relates to a magnetic grinding jig, particularly for holding by magnetic force a cutting tool to be ground or polished having a magnetizable blade and for positioning the same relative to a grinding and/or polishing tool such as a roller grinder.
- a generic magnetic grinding gauge according to the preamble of claim 1 is known from DE 20 2020001 180 U1.
- a roller grinder is known from EP 3278928 A, for example.
- the magnetic grinding gauge known from the prior art is designed for specific blade dimensions and has two contact sides. Blades with a larger blade height are intended to rest against one contact side of the magnetic grinding gauge and are supported backwards on the level surface, so that the cutting edge of the cutting tool to be ground or polished protrudes over the top of the magnetic grinding gauge and is accessible for processing with the roller grinder .
- Blades with a lower blade height there is a step on the other contact side of the magnetic grinding gauge (Fig. 10 and 11) on which the back of the blade can rest so that the cutting edge protrudes over the top of the magnetic grinding gauge and is accessible for processing with the roller grinder is.
- the step for supporting the blade on the back is necessary for this magnetic grinding gauge in order to guarantee a secure hold on the magnetic grinding gauge even when the blade is subjected to high forces during grinding or polishing.
- the object of the present invention is to provide a magnetic grinding gauge that can be used in a variety of ways and with which blades of different sizes and geometries can be securely positioned on the magnetic grinding gauge.
- the magnetic grinding jig according to the invention serves in particular to hold a cutting tool to be ground or polished with a magnetizable blade by means of magnetic force and to position the same relative to a grinding and/or polishing tool such as a roller grinder.
- the magnetic grinding gauge has at least one elastic contact element with which the magnetically attracted blade of the cutting tool comes into contact as intended.
- the main advantage of the present invention over the prior art is essentially that the elastic contact element significantly increases the static friction of the blade on the magnetic grinding gauge.
- the static friction of the blade on the magnetic grinding gauge is largely defined by the magnetic holding force and the coefficient of static friction of the contact element.
- the elastic contact element has a very high coefficient of static friction compared to the magnetizable blade, in particular made of metal.
- the coefficient of static friction of the elastic contact element in relation to the magnetizable blade is generally significantly higher than that of a body of the magnetic grinding gauge made of wood, plastic or metal, for example. Due to its elasticity, the contact element adapts ideally to the surface of the blade and, if necessary, ensures extensive contact with the blade while compensating for unevenness. This further improves the static friction between the contact element and the blade. Due to the elastic contact element, the blade of the cutting tool can also be held on the magnetic grinding gauge solely by means of magnetic force without a support or step on the back.
- the blade Even if force is applied to the blade with the grinding and/or polishing tool in the course of grinding or polishing, the blade remains fixed in the intended holding position on the magnetic grinding gauge. Due to the elastic contact element, the static friction and holding properties of the magnetic grinding gauge are significantly improved. A relative movement between the magnetic grinding gauge and the blade of the cutting tool is prevented by the elastic contact element. This prevents damage to the blade, such as scratches. In addition, the elastic contact element cushions the impact when the blade of the cutting tool is magnetically attracted to a body of the magnetic grinding gauge. The elastic contact element ensures a better application noise and better application feeling on the body of the magnetic grinding gauge.
- the contact element is made of plastic, preferably an elastomer, preferably a vulcanizate of natural rubber or silicone rubber (silicone). Silicone is an inexpensive material with excellent static friction and damping properties. A contact element made of silicone has proven to be optimal for the present application. However, the elastic contact element can also be, for example, a small metal plate with a rubber coating or vulcanized surface or a sprayed-on coating.
- the contact element has a Shore A hardness in the range 1 to 90, preferably in the range 20 to 40.
- the static friction coefficient of the contact element increases with decreasing Shore A hardness.
- the resilience and dimensional stability of the contact element increases with increasing Shore A hardness.
- a contact element with a low Shore A hardness for example in the range of 20 to 40, in particular in the range from 20 to 30, proves optimal for the purposes of the invention.
- the Shore A hardness is preferably measured according to DIN EN ISO 868, DIN ISO 7619-1 and ASTM D2240-00.
- the magnetic grinding gauge has a body on which the contact element is arranged, with the body of the magnetic grinding gauge preferably being partially or completely made of wood and/or plastic and/or metal.
- the contact element has a higher elasticity than the body and/or a magnet of the magnetic grinding gauge. As a result, the contact element cushions a contact impact between the blade and the body and/or magnet of the magnetic grinding gauge.
- the magnetic grinding gauge can have at least one contact side, on which the contact element is arranged, with the contact element covering the contact side in sections or completely covering it. This can prevent accidental contact of the blade with the body of the magnetic grinding gauge.
- the contact element can be colored and used as a decorative element on the body of the magnetic grinding gauge.
- the magnetic grinding gauge has at least one magnet for generating the magnetic force, with the contact element covering one, several or all magnets of the magnetic grinding gauge in sections or completely covering them (preferably in such a way that the magnet is not visible). This can prevent accidental contact of the blade with the magnet.
- the contact element is configured to deform elastically under the action of the magnetically attracted cutting tool, preferably to form a negative mold for a part of the blade of the cutting tool in contact with the contact element.
- This makes it possible in particular for the magnetically attracted blade of the cutting tool to be pressed into the contact element with elastic deformation of the latter and thus not only to be held in a force-fitting manner, but possibly also in a form-fitting manner on the contact element.
- the back of the magnetically attracted blade runs across the contact element, the back of the blade can “dig” into the contact element. A step supporting the rear of the blade can form below the back of the blade.
- the blade can thus be securely held in place with the magnetic grinding gauge according to the invention, even when considerable force is applied by a grinding or polishing tool.
- the contact element is positioned on a flat contact side of a body of the magnetic grinding gauge protrudes so that the body of the magnetic grinding gauge does not affect elastic deformation of the contact element by the magnetically attracted blade.
- the contact element is configured in such a way as to partially or completely prevent contact between the magnetically attracted cutting tool and a body of the magnetic grinding gauge and/or at least one magnet of the magnetic grinding gauge. This prevents the magnetically attracted blade of the cutting tool from being scratched or otherwise damaged.
- the contact element has a flat contact surface for the blade of the cutting tool.
- the blade can be positioned freely in relation to the contact surface.
- the contact element has at least one marking, which preferably indicates the amount of a grinding angle, the marking preferably being designed as a depression in the contact surface of the contact element, the marking particularly preferably being arranged centrally in the contact surface.
- the marking makes it easier for a user to operate the magnetic grinding gauge. Especially in the case of a magnetic grinding gauge with several different contact sides, the marking makes it easier for the user to find a contact side with a suitable grinding angle.
- the magnetic grinding gauge has several contact elements, which are preferably arranged on different contact sides of a body of the magnetic grinding gauge, preferably on opposite sides or facing away from one another, with the contact elements preferably having different acute angles with an installation plane of the magnetic grinding gauge lock in.
- the grinding angle which is preferably measured between the surface of the contact element (or contact surface) and a plane aligned perpendicularly to the base, is preferably in the range between 15° and 20°.
- the grinding surface of a roller grinder is usually aligned in a plane perpendicular to the base.
- the angle between the contact surface of the contact element and the ground is preferably in the range between 70° and 75°.
- Step A Place the magnet sanding gauge on a base.
- Step B Providing a cutting tool with a magnetizable blade and a cutting edge arranged thereon.
- Step C Arranging the blade in the magnetic field of the magnetic grinding gauge so that the blade is attracted magnetically and comes into contact with the contact element, preferably over its entire surface.
- Step D Grinding or polishing the cutting edge of the cutting tool with a grinding and/or polishing tool, preferably with a roller grinder.
- step A it is preferably a horizontally aligned, flat surface, e.g. a tabletop or kitchen worktop.
- a cutting tool with a magnetizable blade within the meaning of step B is, for example, a conventional kitchen knife with a stainless steel blade.
- step C the blade of the magnetizable blade is preferably aligned parallel to the contact surface, as shown in FIG. If the blade is magnetically attracted by the magnetic grinding gauge in this state, only the blade with the blade blade comes into contact with the contact element, ideally over the entire surface, so that the cutting edge is accessible for grinding or polishing.
- the grinding in step D is preferably, but not necessarily, carried out with a roller grinder.
- a roller grinder having a face grinding or polishing surface is rolled horizontally across the flat surface while being held with the grinding or polishing surface oriented in a vertical plane against the cutting edge of the cutting tool blade.
- the direction of movement of the roller grinder is approximately parallel to the direction in which the blade extends.
- the grinding angle is defined by the extension plane of the blade blade intended to be held in contact with the contact element and the vertical plane of the grinding or polishing surface.
- a roller grinder is known from EP 3,278,928 A, among others.
- the blade is arranged in step C in such a way that the blade is at a distance from the base and/or the cutting edge points away from the base. This makes the blade easily accessible for processing.
- the contact element of the magnetic grinding gauge preferably has at least one of the following
- the contact element is made of plastic, preferably an elastomer, preferably a vulcanizate of natural rubber or silicone rubber (silicone).
- the contact element has a Shore A hardness in the range from 1 to 90, preferably in the range from 20 to 40.
- the contact element has a compressive modulus of elasticity in the range from 0.1 to 30 MPa, preferably in the range from 0.2 to 10 MPa, preferably in the range from 0.25 to 2 MPa.
- the contact element has a thickness in the range from 0.1 to 2 mm, preferably a thickness in the range from 0.2 to 1 mm, preferably a thickness in the range from 0.3 to 0.5 mm.
- the contact element has at least one flat contact surface, preferably several flat contact surfaces, preferably with different grinding angles.
- the contact element has a flat fastening surface, with which the contact element is fastened to a body of the magnetic grinding gauge, the fastening surface preferably being aligned parallel to the contact surface.
- the contact element is firmly connected, preferably glued, to a body and/or a magnet of the magnetic grinding gauge.
- the contact element is designed as a cuboid body.
- the contact element has a marking, which is preferably made as a depression in the contact surface.
- the contact element has a rectangular outline.
- the contact element covers a contact side of the body of the magnetic grinding gauge in sections or over the entire surface.
- the contact element covers or closes at least one magnet receiving opening in the body of the magnet grinding gauge in sections or over the entire surface.
- the contact element has, preferably on the contact surface, a coefficient of static friction with respect to steel, in particular high-grade steel, of more than 0.2, preferably more than 0.4, preferably more than 0.6, particularly preferably more than 0.8.
- the contact element has a higher coefficient of static friction than a body and/or a magnet of the magnetic grinding gauge.
- the contact element is transparent, translucent or opaque.
- the contact element is colored with color pigments.
- the contact element has a bottom and/or embedded and/or top decoration.
- the contact element has an anti-slip surface.
- the contact element is designed as a coating on a body and/or a magnet of the magnetic grinding gauge.
- the contact element is sprayed onto a body and/or a magnet of the magnetic grinding gauge.
- a body of the magnetic grinding gauge preferably has at least one of the following features:
- the body has a length in the range 50 to 150 mm, preferably a length in the range 80 to 120 mm.
- the body has a height in the range 15 to 30 mm, preferably a height in the range 20 to 25 mm.
- the body has a width in the range 40 to 80 mm, preferably a width in the range 50 to 60 mm.
- the body consists at least in sections of wood and/or plastic and/or metal.
- the body In a first cross-sectional plane intersecting the contact element—preferably perpendicularly—the body has a trapezoidal cross-section, with the cross-section preferably tapering toward the underside.
- the body has a rectangular cross-section in a second cross-sectional plane that does not intersect the contact element, with the second cross-sectional plane preferably being aligned perpendicular to the first cross-sectional plane.
- the body has a rectangular outline when viewed from above and/or below.
- the body has, preferably in one contact side, at least one opening for accommodating at least one magnet, the opening preferably having a cylindrical shape and preferably being worked into the body of the magnetic grinding gauge perpendicularly to the contact side.
- the body has a larger top than bottom.
- the body tapers from top to bottom, preferably continuously.
- the body has only flat sides.
- the body is more chamfered or rounded on at least one edge defining the top than on at least one edge defining the bottom.
- a magnet of the magnetic grinding gauge preferably has at least one of the following features:
- the magnet is a permanent magnet.
- the magnet includes a cylindrical outer contour.
- the magnet is inserted precisely in a holder in the body of the magnet grinding gauge.
- the magnet comprises at least one flat face.
- the front of the magnet is flush with the body of the magnet grinding gauge.
- the magnet is partially covered on the end face by the contact element or is covered over its entire surface.
- the holding force of the magnet is preferably in the range from 0.1 to 10 kg, preferably in the range from 0.2 to 5 kg, particularly preferably in the range from 0.5 to 4 kg.
- a support section of the magnetic grinding gauge preferably has at least one of the following features:
- the deployment section includes a head and a shaft protruding from the head.
- a shank of the erecting section includes at least one circumferential retaining rib.
- the mounting section is designed as a plastic plug
- the shank of the set-up section comprises at least one holding section that can be fixed to the body of the magnetic grinding gauge.
- the holding section is designed in the shape of a Christmas tree.
- the holding section has a sawtooth structure in cross section.
- the holding section is wedge-shaped
- the holding section tapers in the direction of the shaft end facing away from the head.
- flanks of the shank are in the direction of insertion, i. H. towards the end of the shank facing away from the head, at a smaller angle to the shank axis than in the opposite direction.
- a force for inserting the shank into a corresponding opening in the body is less than a force required to pull the shank out of this opening again.
- the positioning section is made of plastic, preferably an elastomer, preferably a vulcanizate of natural rubber or silicone rubber (silicone).
- the erection section has a Shore A hardness in the range of 20 to 80, preferably in the range of 40 to 60.
- FIG. 1 A side view of a magnetic grinding gauge according to the invention according to the first exemplary embodiment of the invention, with the hidden components being shown in dashed lines.
- FIG. 2 a plan view of the magnetic grinding gauge from FIG.
- FIGS. 1 and 2 a schematic view of an arrangement comprising a magnetic grinding gauge according to FIGS. 1 and 2, a cutting tool to be ground or polished and a grinding and/or polishing tool in the form of a roller grinder, the blade of the cutting tool being in magnetic contact held with the elastic contact element of the magnetic grinding gauge so that the back of the blade is at a distance from the ground and the cutting edge of the cutting tool deviates from the ground.
- Fig. 5 a top view of the magnetic grinding gauge from Figure 4.
- Fig. 6 The arrangement according to FIG. 3 from a different perspective.
- the magnetic grinding gauge 1 is used to hold a cutting tool 2 to be ground or polished with a magnetizable blade 2a by means of magnetic force and to position the same relative to a grinding and/or polishing tool such as a roller grinder 3.
- the magnetic grinding gauge 1 comprises at least one elastic Contact element 4, with which the magnetically attracted blade 2a of the cutting tool 2 intended to come into contact.
- the magnetic grinding gauge 1 is claimed independently of the cutting tool 2 and its blade 2a. Therefore, the description and the claims are based on the intended application of the magnetic grinding gauge 1, in which the blade of the cutting tool 2 rests flat on the contact element 4, as shown in FIGS. 3 and 6. In the intended application, ideally only the magnetically attracted blade 2a of the cutting tool 2 reaches the area or full-surface contact with the contact element 4, with any contact of the cutting tool 2 with a body 5 or magnet 6 of the magnetic grinding gauge 1 being omitted.
- the magnetic grinding gauge 1 is designed in particular for positioning cutting tools 2 in the form of kitchen knives.
- Kitchen knives often have a stainless steel blade 2a with an approximately flat blade and a slightly curved, one-sided cutting edge 2b.
- other cutting tools 2 can also be positioned with the magnetic grinding gauge 1 according to the invention.
- the shape of the cutting tool 2 and the blade 2a are not critical.
- the advantage of the magnetic grinding gauge 1 according to the invention lies precisely in the fact that it can be used universally for different blade sizes and geometries.
- FIG. 1 The magnetic grinding jig 1 according to the first embodiment of the invention will be described below with reference to FIGS. 1 to 3 and 6.
- FIG. 1 The magnetic grinding jig 1 according to the first embodiment of the invention will be described below with reference to FIGS. 1 to 3 and 6.
- the magnetic grinding gauge 1 comprises an approximately cuboid body 5 which has a trapezoidal cross section in a cross-sectional plane perpendicularly intersecting the contact element 4 (parallel to the plane of the sheet or drawing area) as shown in FIG.
- Each positioning section 7 is designed as a plastic plug and includes a head and a shaft with a fir tree structure protruding from the head, the individual retaining ribs having a sawtooth structure in cross section.
- the retaining ribs are wedge-shaped and taper in the direction of the shaft end facing away from the head.
- the flanks of the shank and the retaining ribs attached thereto are inclined at a smaller angle to the shank axis in the insertion direction, ie towards the end of the shank facing away from the head than in the opposite direction.
- a force for inserting the shank into the corresponding opening of the body 5 is less than a force required to pull it out of this opening again.
- the plastic stopper is preferably made of silicone and preferably has a Shore A hardness in the range from 40 to 60.
- the body 5 of the magnetic grinding gauge 1 is preferably made of untreated or lacquered wood (e.g. oak, nut, beech or spruce) and preferably has only flat sides.
- the edges on the underside of the body 5 are preferably less chamfered or rounded than the other edges of the body 5.
- the body 5 of the magnetic grinding gauge 1 has a length L of approx. 82 mm (measured at the top), a height H of approx. 22 mm and a width B of approx. 56 mm. Including the mounting sections 7, the height H1 of the magnetic grinding gauge 1 is approximately 25 mm.
- the on this side of the The grinding angle a1 formed by the magnetic grinding gauge 1 is 20° and corresponds to the angle between the contact side 8 and a vertical grinding plane S, which is aligned perpendicular to the installation plane E and in which the grinding or polishing surface of a roller grinder 3 is located and moves.
- the side of the body 5 opposite the contact side 8 is aligned parallel to the grinding plane S.
- the contact side 8 of the body 5 and the outwardly facing end faces of the magnets 6 inserted into the bores are here covered over the entire surface with an elastic silicone contact element 4 with a rectangular outline and glued.
- the contact element 4 has a thickness in the range of 0.5 mm, for example, and a Shore A hardness of 30, for example.
- the contact element 4 forms a flat contact surface for the blade 2a of the cutting tool 2, against which the blade can ideally lie over its entire surface without the cutting tool 2 coming into contact with the body 5 of the magnetic grinding gauge 1.
- a marking for displaying the amount is optional on the contact surface of the contact element 4 (“20°”) of the respective grinding angle a1 is provided, for example incorporated as a recess in the center of the contact element 8. Marking in the form of an imprint is also possible.
- the magnetic grinding gauge 1 with the positioning sections 7 is placed on a flat base U (step A).
- the cutting edge 2b points away from the base U and the blade 2a is spaced from the base U.
- the blade 2a is consequently held in contact with the contact element 4 solely by the magnetic force of the magnetic grinding gauge 1 .
- the elastic contact element 4 is elastically deformed by the blade 2a under the action of the magnetic force until a force equilibrium is reached between the elastic restoring force of the contact element 4 and the magnetic force of the magnetic grinding gauge 1 exerted on the blade 2a.
- the magnetically attracted blade 2a presses into the contact element 4.
- a step forms on the rear side of the blade 2a due to the elastic deformation of the contact element 4, which makes displacement of the blade 2a, which is held in contact with the contact element 4, even more difficult.
- the blade 2a of the cutting tool 2 is processed with the roller grinder 3 having at least one face grinding or polishing surface.
- the roller grinder 3 is moved horizontally in a rolling manner over the flat base U and is held in contact with the cutting edge 2b of the blade 2a of the cutting tool 2 with the grinding or polishing surface aligned in a vertical plane.
- the direction of movement of the roller grinder 3 is approximately parallel to the direction in which the blade blade extends.
- the grinding angle a is defined by the extension plane of the blade blade that is intended to be held in contact with the contact element 4 and the vertical plane of the grinding or polishing surface of the roller grinder 3 .
- the magnetic grinding gauge 1 has features that are largely identical to those in the first exemplary embodiment, with the differences being explained below: Deviating from the first
- the magnetic grinding gauge 1 of the second exemplary embodiment comprises two different contact sides 8 on opposite sides of the body 5, which are each covered over their entire surface with their own elastic contact element 4.
- the respective contact element 4 is exactly the same size as the contact side 8 of the body 5 of the magnetic grinding gauge 1 covered by it.
- a blade 2a of a cutting tool 2 that is attracted by magnetic force thus only comes into contact with the respective contact element 4 and not with the body 5 of the magnetic grinding gauge 1 or even with the magnets 6 arranged therein.
- the grinding angles a1, a2 are 8 on both contact sides of the body 5 designed differently.
- the grinding angle a1 is 20°, for example, and the grinding angle a2 is 15°, for example.
- the body 5 of the magnetic grinding gauge 1 has a length L of approx. 112 mm (measured at the top), a height H of approx. 22 mm and a width B of approx. 56 mm. Including the mounting sections 7, the height H1 of the magnetic grinding gauge 1 is approximately 25 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020123500.3A DE102020123500A1 (de) | 2020-09-09 | 2020-09-09 | Magnet-Schleiflehre mit elastischem Kontaktelement |
PCT/EP2021/074644 WO2022053477A1 (de) | 2020-09-09 | 2021-09-08 | Magnet-schleiflehre mit elastischem kontaktelement |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4210901A1 true EP4210901A1 (de) | 2023-07-19 |
Family
ID=77897614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21773745.1A Pending EP4210901A1 (de) | 2020-09-09 | 2021-09-08 | Magnet-schleiflehre mit elastischem kontaktelement |
Country Status (10)
Country | Link |
---|---|
US (1) | US20230294233A1 (pt) |
EP (1) | EP4210901A1 (pt) |
JP (1) | JP7564343B2 (pt) |
KR (1) | KR20230050454A (pt) |
CN (1) | CN116075396A (pt) |
BR (1) | BR112023004025A2 (pt) |
CA (1) | CA3192759A1 (pt) |
DE (3) | DE102020123500A1 (pt) |
MX (1) | MX2023002830A (pt) |
WO (1) | WO2022053477A1 (pt) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010260160A (ja) | 2009-04-30 | 2010-11-18 | Tsutomu Yuasa | 刃物研ぎ具 |
JP2011104718A (ja) | 2009-11-18 | 2011-06-02 | Yamazono Shokki Seisakusho:Kk | 刃物研ぎ機 |
JP5743197B2 (ja) | 2011-04-26 | 2015-07-01 | 株式会社貝印刃物開発センター | 電動刃物研ぎ機 |
US20140342644A1 (en) | 2013-05-17 | 2014-11-20 | Tom Hiroshi Hasegawa | Blade Sharpening Stand |
DE102016009482B4 (de) | 2016-08-05 | 2018-06-14 | Timo Horl | Vorrichtung zum Schleifen und/oder Polieren eines Schneidwerkzeuges |
KR101876722B1 (ko) * | 2016-10-19 | 2018-07-13 | 장성진 | 날 연마각도 조절장치 |
KR20190003177U (ko) * | 2018-06-18 | 2019-12-27 | 이기완 | 칼갈이 세트 |
DE202020001180U1 (de) | 2020-03-25 | 2020-04-23 | Mobiset Gmbh | Rollschleifer und Rollschleifer-Set |
DE202020103080U1 (de) | 2020-05-28 | 2020-07-01 | Detlef Werner | Hilfswerkzeug zum Schleifen einer Schneide |
-
2020
- 2020-09-09 DE DE102020123500.3A patent/DE102020123500A1/de active Pending
-
2021
- 2021-09-08 CA CA3192759A patent/CA3192759A1/en active Pending
- 2021-09-08 BR BR112023004025A patent/BR112023004025A2/pt unknown
- 2021-09-08 MX MX2023002830A patent/MX2023002830A/es unknown
- 2021-09-08 CN CN202180061867.6A patent/CN116075396A/zh active Pending
- 2021-09-08 DE DE202021004431.0U patent/DE202021004431U1/de active Active
- 2021-09-08 US US18/044,325 patent/US20230294233A1/en active Pending
- 2021-09-08 KR KR1020237009212A patent/KR20230050454A/ko unknown
- 2021-09-08 JP JP2023515582A patent/JP7564343B2/ja active Active
- 2021-09-08 DE DE202021004402.7U patent/DE202021004402U1/de active Active
- 2021-09-08 WO PCT/EP2021/074644 patent/WO2022053477A1/de unknown
- 2021-09-08 EP EP21773745.1A patent/EP4210901A1/de active Pending
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DE202021004431U1 (de) | 2024-07-01 |
CA3192759A1 (en) | 2022-03-17 |
DE102020123500A1 (de) | 2022-03-10 |
KR20230050454A (ko) | 2023-04-14 |
US20230294233A1 (en) | 2023-09-21 |
MX2023002830A (es) | 2023-03-17 |
WO2022053477A1 (de) | 2022-03-17 |
DE202021004402U1 (de) | 2024-03-04 |
JP7564343B2 (ja) | 2024-10-08 |
CN116075396A (zh) | 2023-05-05 |
JP2023539926A (ja) | 2023-09-20 |
BR112023004025A2 (pt) | 2023-04-04 |
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