DE102007062998A1 - Method of sharpening cutting blades of cutting tools and tool and substance therefor - Google Patents

Abstract

The invention relates to a method for sharpening at least one cutting edge (2) of at least one cutting blade (1) of a cutting tool, characterized by the following method steps: a) placing the cutting blade (1) on a microfiber cloth (9); b) spraying a substance of a solution of alcohol and oil combinations, in particular paraffins, on the cutting edge (2), wherein at the same time also the area of the microfiber cloth (9) adjacent to the cutting edge (2) is sprayed; c) drawing along the microfiber cloth (9), which is sprayed with the substance, along the cutting edge (2); d) polishing the sharpened cutting edge (2) with the microfiber cloth (9) sprayed with the substance. The tool for sharpening at least one cutting edge (2) of at least one cutting blade (1) of a cutting tool is a microfiber cloth (9) consisting of fibers about 10 microns thick and woven so that fiber bundles on the surface have many free loops and having free fiber ends. The substance (20) is a solution of alcohol and Ölkominationen, wherein in the oil combinations in particular paraffin oil is dissolved in alcohol. The object is to develop a method for sharpening cutting edges of cutting blades of cutting tools so that a particularly simple and reliable method can be performed and the associated tool and substance is readily available and can be used in a simple way.

Description

The The invention relates to a method for sharpening cutting blades of cutting tools according to the preamble of patent claim 1, as well as a tool for sharpening cutting blades according to the preamble of claim 6 and a corresponding substance according to the preamble of claim 10 for carrying out this Process.

The The invention relates in particular to the sharpening of Cutting blades of scissors, especially hairdressing scissors, Secateurs, household scissors, knives for household use and Everyday use.

There the cutting edge of the knife more or less by the use worn and dull are periodically recurring sharpening procedures necessary. These differ depending on the bevel and material the blade, as well as the degree of wear.

By the use first of all lays down on many metal knives the ridge, so the sharp edge of the cutting edge, on microscopic Level around. However, the cutting action unfolds on the ridge, it is therefore severely affected by uneven ridges. With A sharpening steel you can now raise the ridge again. For this Pull the knife over the hard metal at an acute angle of sharpening steel, this can be "contrary" or "with" do the dash (the sharp blade side). It does not become metal worn, but only the ridge directed. Consequently, needs the knife already has a sufficient cut before. Is the blade too worn, d. H. the profile of the blade does not match more to the original profile, you have to re-grind the knife.

Of the Sharpening steel is used to sharpen knives. The sharpening steel is a round or oval rod made of high quality, very hard steel.

These Method of sharpening does not remove steel in principle from the blade, so the knife is not polished like this when using a grindstone. Instead, through the Whetting up microscopic bumps on the blade, so that it forms a straight line again and therefore better can cut. A sharpening steel is only really effective if the blade has in principle already a sufficiently good finish, on which, however, small bumps have been created by cutting which are set up again by the sharpening steel.

If the use of a sharpening steel no longer the desired Sharpness produced, the blade must again with the help of a Wetzsteins or the like to be sharpened, where then some steel is removed from the blade again.

in the Unlike the whetstone, the blade is not ground, so no steel removed, but only directed. The sharpening steel will used repeatedly during the use of the knife.

at When making the scissors, the blades are polished at the end or honed.

This Polishing or honing process is also used to remove knives. There are instructions known in which z. B. finest polishing pastes with Methylated spirit mixed to be applied to a leather strap, where the cutting edge is removed.

As well is known that razor on a leather strap (so-called Strop) can be deducted.

Around keeping the knife sharp for the daily shave, it is sufficient to peel off the strop. This one exists from two sides, one has a chromium oxide layer (green) and the other is not treated, respectively, with a white one or clear antiseptic paste rubbed. The razor will pulled off on the non-green side before each shave. This serves to raise the sensitive edge again. The stripping belts usually have a hemp back, which is also for erecting the Cutting edge serves. Thereafter, further deducted on the leather side.

at the shave bends the cutting edge by the contact with the hair little around. Would you use the razor directly after shaving deduct, so you would polish off these places and you get permanently a jagged cutting edge, more common on the Stone must be sharpened. If the knife a little bit dull, then you change to the green Page, this page has more removal than the other.

Smooth handling of shears / cutting geometry

Quality Scissors should be well maintained to last a long time. If a pair of scissors is rough and heavy, they often do not have to be reground immediately become. Dust, lint and cutting debris should be be removed from the cutting edges and scissor blades. The screw connection should not be loosened. There and again you should have a small drop of caring oil in the Screw slot and give the intermediate. So the scissors stay smooth.

A ideal movement ensures a soft opening and closing and a gentle cut.

The Scissors will do so in every desired position and in every one selected cutting angle optimum cutting performance and the edge sharpness is maintained.

The Change of mobility also causes a change the cutting performance.

• 1.) Der Grat gerichtet wird.
• 2.) Die Schnittkante nachgehont bzw. geschliffen wird.
• 3.) Durch die Aufnahmen von Fett (Lederriemen) die Poren geschlossen werden und eine Leichtgängigkeit erreicht wird.

In summary, it should be noted that:

• 1.) The burr is directed.
• 2.) The cut edge is honed or sanded.
• 3.) By the recordings of fat (leather straps) the pores are closed and a smooth running is achieved.

In the prior art, it is known to clean basically hard surfaces ( DE 10 2005 036 339 A1 or DE 10 2005 034 977 A1 ).

disadvantage However, the known cleaning agent is that no sharpening effect arises, but only dirt particles from the surfaces to be cleaned be removed.

Of the Invention is based on a method for sharpening the task of cutting blades of cutting tools mentioned at the beginning To develop a way so that a particularly simple and more reliable Procedure can be performed and the associated Tool well available and easy to use is.

to Solution of the problem is the invention by a Method according to the subject matter of claim 1.

One Essentially, the tool used for the method consists from a so-called microfiber cloth. It is about a rag, the tissue has a special structure. On the one hand it consists of fine fibers, with about 10 microns less than half as thick as cotton. On the other hand The cloth is woven so that the fiber bundles are on the surface have many free loops and free fiber ends. Different with normal cleaning cloths carry the fine fibers themselves and not the fiber bundles for the cleaning process.

in this connection it is preferred if the fibers are made of a hard plastic material exist, such. As polyamide and polyester. So it is To fiber-plastic mixtures, which is a particularly hard surface form and so the microfiber cloth for the first time as a tool for sharpening harness cutting blades of cutting tools.

It namely was found, although these fiber bundles are very fine, they have a strong abrasive action and these strong abrasive effect is now according to the invention for Sharpening of cutting blades used by cutting tools.

A Substance used in conjunction with said tool (microfiber cloth) is used for sharpening cutting blades, is preferably a Solution of alcohol and oil combinations, where for the oil combinations, paraffin oil in particular Alcohol is dissolved.

• 1.) Auflegen der Schneidklingen eines zu schärfenden Schneidwerkzeuges auf ein Mikrofasertuch.
• 2.) Einsprühen einer Lösung aus Alkohol und Ölkombinationen, insbesondere Paraffinen auf die Schneidkanten und die Schneidklingen des Schneidwerkzeuges, wobei gleichzeitig auch Bereiche des Mikrofasertuches eingesprüht werden.
• 3.) Entlangziehen des Mikrofasertuches, welches mit der Substanz eingesprüht ist, entlang der zu schärfenden Schneidklingen.
• 4.) Polieren der geschärften Schneidklingen mit dem teilweise benetzten Mikrofasertuch.

The method for sharpening cutting blades of cutting tools is now characterized by the following method steps:

• 1.) placing the cutting blades of a sharpening cutting tool on a microfiber cloth.
• 2.) spraying a solution of alcohol and oil combinations, in particular paraffins on the cutting edges and the cutting blades of the cutting tool, at the same time also areas of the microfiber cloth are sprayed.
• 3.) Traverse the microfibre cloth, which is sprayed with the substance, along the cutting blades to be sharpened.
• 4.) Polishing the sharpened cutting blades with the partially wetted microfiber cloth.

• 1.) Durch das Einsprühen mit einer Lösung aus Alkohol und Ölkombinationen wird die Schneidkante porentief von Ablagerungen gereinigt. Die Schneidgeometrie kann so wieder in der optimalen Form (besonders bei Scheren) zueinander gleiten.
• 2.) Der Zusatz an Wachs- bzw. Ölkombinationen bewirkt ein Schließen der mikroskopisch kleinen Poren und erhöht die Gleiteigenschaften zusätzlich. (siehe Lederriemen)
• 3.) Durch das anschließende Polieren mit dem Mikrofasertuch wird die Oberfläche poliert bzw. der Grat im mikroskopischen Bereich (ähnlich eines Wetzstahles oder Leder) wieder gerichtet.

With the mentioned method steps, a completely new method for sharpening cutting blades of cutting tools is proposed, because during the aforementioned method steps, the following effects occur:

• 1.) By spraying with a solution of alcohol and oil combinations, the cutting edge is cleaned pore-deep of deposits. The cutting geometry can thus slide again in the optimal form (especially with scissors) to each other.
• 2.) The addition of wax or oil combinations causes a closing of the microscopic pores and increases the sliding properties in addition. (see leather straps)
• 3.) The subsequent polishing with the microfibre cloth, the surface is polished or the burr in the microscopic area (similar to a sharpening steel or leather) again directed.

It is particularly crucial here, abrasive, abrasive cloths to use. Especially microfibre cloths have by their Polyester-polyamide blend in the microscopic area a erosive and polishing effect.

Namely, in the first process step, there is the advantage that both with the spray beam of the substance to be used, the cutting blade and the cutting edges of the cutting tool hits, as well as the underlying microfiber cloth, which has the advantage that the microfiber cloth is also sprayed with it and later, used in the last polishing step, the components contained in the microfiber cloth for the polishing process the same can be.

Further the advantage is that with the simultaneous spraying the microfiber cloth and the cutting blades lying on it Microfiber cloth already for the subsequent honing process is prepared. This means that in the Alcohol dissolved paraffin particles in the spray substance be placed on the ground ridges of the cutting edge and settle in the ridge depressions and partly also crater increases. Incidentally, all are also during the cutting process contacted surfaces of the cutting blades with this Paraffin coating provided. This results in the essential Advantage that by the attachment of the paraffin coating First of all, some of the ridge depressions and burr bends be closed and there by depositing relatively hard Paraffin particles are bridged.

If now in the further process step described above, the microfiber cloth guided along the cutting edge with its hard abrasive fibers happens, the unexpected effect happens that the fiber fibrils the microfiber cloth are suitable, bent parts of the cutting edge (subsequently called burr bends) upright again and to deform back into the plane of the cutting edge.

In order to close by the burr bends before there strong cuts in the cutting edge because of the burr bends be deformed back up into the cutting edge and thereby the unfavorable and the way of working restricting Nicks are closed in the cutting edge.

The Microfiber cloth also has a slight honing effect on the cutting edge, so that slightly so also metallic particles of the cutting edge that protrude beyond the cutting edge, be removed.

Thereby the cutting geometry of the scissors becomes smooth, i. H. the touching during the cutting process Areas of the cutting blades of a pair of scissors are covered by the oil and smeared the subsequent wax application and run smoothly past each other. Furthermore, it is preferred if the spray also on the scissors joint of a pair of scissors to be sharpened is given, because there also penetrates the oil and paraffin particles deposits. This also serves to lubricate the scissors joint. The use of paraffin particles is namely not the disadvantage - as it is when lubricating with oil substances the case is - that subsequently dirt particles on tie this oil film. With the spraying one Paraffin-alcohol mixture is at the same time the scissors joint purified by the alcohol portions and the subsequent paraffin film serves as lubrication in the scissors joint, without the risk that with a pre-existing oil film this penetrating Dirt particles binds to itself. When a paraffin layer happens not this.

Of the Subject of the present invention does not arise only from the subject matter of the individual claims, but also from the combination of the individual claims among themselves.

All in the documents, including the abstract Information and features, in particular the spatial shown in the drawings Training, are claimed as essential to the invention, as far as individually or in combination with the state of the art Technology is new.

in the Below, the invention will be described with reference to only one embodiment illustrative drawings explained in more detail. in this connection go from the drawings and their description further essential to the invention Features and advantages of the invention.

It demonstrate:

1 : Schematisiert an unprepared and contaminated, and unsharpened cutting edge of a cutting blade in a greatly enlarged representation

2 : The cutting blade after 1 after a first process step

3 : The cutting blade after 2 after a further process step

4 and 5 : The presentation of straightening the burr bends by a sanding cloth

6 : Schematisiert in perspective view of the implementation of the method.

For reasons of simplification, the term grinding cloth will be used in the following description 9 used as a synonym for microfiber cloth, it should also be shown that the microfiber cloth shows both an absorbent action due to capillary action in the microfiber fibrils, as well as an abrasive effect, which means that the hard microfibers exert a grinding action on metal parts.

In 1 is a used cutting blade 1 represented, which is to be sharpened. The cutting edge 2 has a variety of burr pits and intermediate burr increases. There are also burr bends 5 This means that parts of the cutting edge are undesirably bent downwards out of the plane of the cutting edge and in this case the burr bends mentioned 5 form. Likewise, on the cutting edge 2 a variety of dirt particles 6 fixed and in between are also cutting articles 7 settled, which originate from substances, with the cutting blade 1 were cut.

The 2 shows as a first step in conjunction with 6 in that when spraying a spray jet 18 from a spray nozzle 19 on the cutting blade 1 initially wax particles 8th on the surface of the cutting blade 1 and thus also on the cutting edge 2 drop. These wax particles 8th (drawn as rectangular parts in an enlarged view) lie both in the ridge depressions 3 into and into the ridge heights 4 and wet the entire surface of the cutting edge 2 ,

At the same time it can be seen that the dirt particles 6 and the cutting products 7 from the alcohol in the spray substance 20 be dissolved. In the next step after 3 Now is the grinding cloth according to the invention 9 in the direction of the arrow 10 over the cutting edge 2 guided. It consists of fiber fibrils 11 , which are interwoven crosswise and this is due to the microfiber structure a strong capillary force induced suction in the direction of arrow 12 of dissolved dirt particles 6 and cutting articles 7 exercise.

By the movement of the sanding cloth 9 - Which is electrically insulating - finds at the same time an electrostatic charge of the grinding cloth 9 instead, which due to electrostatic attraction, the dissolved by the alcohol particles of dirt 6 and cutting articles 7 additionally in the internal structure of the sanding cloth 9 be recorded. In addition to the absorption effect by capillary action, it also comes to an electrostatic charge of the abrasive cloth 9 , in particular of the areas of the microfibre cloth, that of the spray 18 were not hit. These areas remain dry, and because they are dry, they can become electrostatic during the movement of the sanding cloth 9 in the direction of the arrow 10 charge and here in addition a transfer of excess wax particles 8th in the direction of the arrow 13 and additionally a transfer of loosely adhering dirt particles 6 and cutting articles 7 on the sanding cloth 9 due to electrostatic attraction.

So there are two separate from each other running transfer or Abtragungsvorgänge through the grinding cloth 9 instead, which is in the direction of the arrow 10 along the cutting edge 2 is moved.

Due to the abrasive effect of the fiber fibrils 11 close first the ridge depressions 3 because they are sanded, and on the other it comes to a burr deformation, as in the 4 and 5 is shown. In the 4 burr bends shown 5 coming from the plane of the cutting edge 2 are bent out by the hard fiber fibrils 11 of the sanding cloth 9 , which in the direction of the arrow 10 along there, in the direction of the arrow 14 erect so that the shape obtained as in 5 is shown. The erect burrs shown there 15 then lie again in the plane of the cutting edge 2 , thanks to the sanding cloth 9 took place.

The 6 shows an application example of a method according to the invention. There it can be seen that the sanding cloth 9 is designed in a plane and the scissor blades to be ground 16 . 17 a pair of scissors to open with a spray 18 the cutting edges 2 the scissor blades 16 . 17 to spray as large as possible. Important here is that the spray 18 the spray substance 20 also a part of the surface of the sanding cloth 9 meets this surface also with the spray substance 20 to wet. Therefore, they bring in this area dissolved in alcohol wax particles 8th and impregnate the sanding cloth 9 in this area.

It is then in the following best equipped for the polishing process, because with the spray substance 20 wet areas of the abrasive cloth simultaneously polish the surfaces of the cutting edge 2 to 3 and lead to the aforementioned effects, namely the burr bends 5 be erected and at the same time the burr pits 3 be closed and all wetted surfaces in addition to the wax particles 8th be occupied.

It is preferred here, although the connecting screw 21 which the scissors joint 22 forms, of the spray substance 20 is taken.

With the given technical teaching of a novel method, a tool used for this purpose (abrasive cloth 9 and spraying substance 20 ) the effect is achieved that it is now possible for the first time is, without grindstone, without grinding steel or other tools at the same time the cutting edge 2 of cutting blades 1 . 17 . 18 to sharpen, polish and with a wax film 8th to impregnate. This is done practically in a single operation, which was not yet known.

The said spray substance 20 It consists essentially of a mixture of oils, waxes and alcohol.

1

cutting blade

2

cutting edge

3

Gratvertiefung

4

Graterhöhung

5

Gratumbiegung

6

dirt particles

7

cutting particles

8th

wax particles

9

abrasive cloth

10

arrow

11

Faserfibrille

12

arrow

13

arrow

14

arrow

15

erect ridge

16

scissor blade

17

scissor blade

18

spray

19

spray nozzle

20

Sprühsubstanz

21

connecting screw

22

scissor joint

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 102005036339 A1 [0019]
• - DE 102005034977 A1 [0019]

Claims (11)

Method for sharpening at least one cutting edge ( 2 ) at least one cutting blade ( 1 ) of a cutting tool, characterized by the following method steps: a) placing the cutting blade ( 1 ) on a microfiber cloth ( 9 ); b) spraying a substance ( 20 ) a solution of alcohol and oil combinations, in particular paraffins, on the cutting edge ( 2 ), whereby at the same time also to the cutting edge ( 2 ) adjacent area of the microfiber cloth ( 9 ) is sprayed; c) pulling the microfiber cloth ( 9 ), which with the substance ( 20 ) is sprayed along the cutting edge ( 2 ); d) polishing the thus sharpened cutting edge ( 2 ) with the substance ( 20 ) sprayed microfiber cloth ( 9 ). A method according to claim 1, characterized in that at step 1b ) the substance ( 20 ) also on the cutting blade ( 1 ) is sprayed on. A method according to claim 1 or 2, characterized in that at step 1b ) the substance ( 20 ) on the cutting blade ( 1 ) adjacent area of the microfiber cloth ( 9 ) is sprayed on. Method according to one of claims 1 to 3, characterized in that at step 1c ) that with the substance ( 20 ) sprayed microfiber cloth ( 9 ) also along the cutting blade ( 1 ) is pulled. Method according to one of claims 1 to 4, characterized in that at step 1d ) also the cutting blade ( 1 ) with the substance ( 20 ) sprayed microfiber cloth ( 9 ) is polished. Tool for sharpening at least one cutting edge ( 2 ) at least one cutting blade ( 1 ) of a cutting tool, in particular for carrying out the method according to claims 1 to 5, characterized in that the tool is a microfiber cloth ( 9 ). Tool according to claim 7, characterized in that the microfiber cloth ( 9 ) of fibers ( 11 ), which are about 10 microns thick. Tool according to claim 7 or 8, characterized in that the fibers ( 11 ) of the microfibre cloth ( 9 ) are woven so that fiber bundles on the surface have many free loops and free fiber ends. Tool according to one of claims 7 to 9, characterized in that the fibers ( 11 ) of the microfibre cloth ( 9 ) made of a hard plastic material such. As polyamide and polyester. Substance for sharpening at least one cutting edge ( 2 ) at least one cutting blade ( 1 ) of a cutting tool, in particular for carrying out the method according to claims 1 to 5, characterized in that the substance ( 20 ) is a solution of alcohol and oil combinations, wherein in the oil combinations in particular paraffin oil is dissolved in alcohol. Substance according to claim 10, characterized that the substance contains polishing additives.