JP2002046043A - Grinding tool for blade such as chisel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent irregular sagging of a cutting edge caused by the rash action during a blade grinding motion. SOLUTION: In this grinding tool for a blade such as a chisel, the holding attitude for maintaining contact of the whole surface of a front blade for forming the blade edge together with a back blade or at least a base line at the blade front end of a cutter with a handle on the smoothed grinding surface of a grinding wheel is secured on a sliding table slidable parallel to the grinding surface, and sharpening is easily made reliable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a sword for woodcut printing, wood carving, etc., which is sharpened by sharpening the cutting edge after use and when it becomes dull due to long-term storage. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sharpening tool for a sword that can completely regenerate and renew the blade and improve the sustainability of sharpness, and can contribute to a sharp increase in free-cutting and engraving workability.

[0002]

2. Description of the Related Art Conventionally, a manual sharpening tool for a blade of a chisel is known to be a repetition of a reciprocating motion of moving a blade in a longitudinal direction of a sharpening plate along a splint parallel to the sharpening plate. (See Design Publication 1054628).

[0003]

According to the above-described conventional technique, a general user who often has no skill in sharpening the blades is likely to fall short. Or, especially at the end of the stroke, the blade often tends to be loosely held, causing shaking or delusion, causing irregular cutting of the cutting edge, and in this way recovery of sharpness is not as permanent as it is. There were drawbacks that affected the performance of

[0004] In order to solve the above-mentioned problems, the present invention provides a novel tool for sharpening a chisel, which reliably guides a sharpening motion of reciprocatingly sliding a front blade on a grinding surface. With the goal.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a sharpening tool for a chisel according to the present invention is provided with a grindstone having a grind surface arranged in a smooth plane, and a movement in a plane parallel to the grind surface. With a free-running slide, the slide is designed so that the front blade to be sharpened at the front end of the handle with the handle has the entire surface or at least a busbar (when the front blade is a curved blade, for example, a round blade) and a ground surface. The present invention is characterized in that it has a blade receiver for holding and enabling the adjustment of the inclination angle in the longitudinal direction and the rotation angle around the axis and the restraint thereof so as to be in a contacting posture. Further, in this case, the present invention is characterized in that the blade receiver has a pair of arcuate groove-shaped pieces spaced apart in the direction of the axis of the handle with a handle, and at least one of the arcuate groove-shaped pieces is the other arcuate groove. It has a lifting / lowering adjustment tool for the shape piece. Further, the blade receiver is combined with a cylindrical jig supported by the pair of arcuate concave groove-shaped pieces, and the cylindrical jig includes a chuck for fixing the handle with a handle therein. In addition, the runway has a dowel (thick handle) or tenon (handle)
It is more desirable to have a multi-stage structure by coupling. More preferably, the arcuate groove-shaped piece on the blade edge side has a guide blade piece that can slide and adjust in each of the inclined long slots provided in the pair of side walls of the blade receiver.

[0006]

FIG. 1 illustrates a basic embodiment of a chisel blade sharpener according to the present invention, wherein 1 is a grindstone having a grinding surface 2 arranged in a smooth plane, and 3 is a grinding surface 2. Is a movable slide in a plane S parallel to the plane, and 4 is a blade receiver (see also the case of FIG. 2).

As shown in FIG. 1, in many cases, the blade receiver 4 has a handle 5 having an oval cross section having a major axis and a minor axis of about 18 mm × 12 mm. The front edge is the entire surface or at least the abrasive surface at the busbar 2
It has the function of adjusting the angle of inclination in the longitudinal direction and the angle of rotation about the axis to be brought into contact with the robot, and holding the restraint as possible. That is, the blade receiver 4 has a pair of arcuate concave groove-shaped pieces 6, 7 which are in contact with each other at two points on the outer periphery of the handle of the patterned blade 5 at intervals in the direction of the axis of the patterned blade 5, and At least one of the arcuate groove-shaped pieces has an elevating / lowering adjusting tool 8 for the other arcuate groove-shaped piece, and the above-mentioned rotation angle and elevating / lowering movement in which the handle with a handle 5 is supported by the arcuate groove-shaped pieces 6, 7 The inclination angle can be adjusted by the adjusting tool 8.

As shown in FIG. 2, the blade receiver 4 has a cylindrical jig 9 supported by a pair of arcuate groove-shaped pieces 6, 7 of the blade receiver 4 basically similar to that shown in FIG. In this case, the cylindrical jig 9 is slightly thinner than that of FIG. 1, for example, a handle with a handle having a circular section having an outer diameter of about 13 mm or an oval section of about 15 mm × 11 mm. A chuck 10 for internally fixing 5 'is provided.

The chuck 10 has a receiving plate 13 consisting of a front plate 13a and a rear plate 13b which are tightly inserted and fixed respectively in a pair of cut grooves 9a, 9b opened at one end of the cylindrical jig 9.
And a rectangular frame 14 having a pair of leg walls 14a, 14b that can slide up and down in a pair of parallel long slots 13c, 13d provided on the receiving plate 13 over the front plate 13a and the rear plate 13b.
And an anvil 15 for holding the blade of the knife with a handle 5 ′ between the bottom wall 14 c of the rectangular frame 14 and the lower surface of the receiving plate 13, and a top wall 14 d of the rectangular frame 14.
, A pressing screw 16 is screwed in, and the plate 17 at the lower end thereof is screwed down to lift the rectangular frame 14 with respect to the receiving plate 13 so as to realize the clamping of the blade. In addition, in the figure, 18a and 18b are the cylindrical jig 9
It is a set screw held inside.

[0010] As shown in FIG. 1, a cylindrical jig shown in FIG. 2 is more preferable than the case where the handle 5 is directly placed on the tool receiver 4 and the handle 5 'is slightly thin. 9 is held by the chuck 10 and the set screws 18a and 18b in the tool holder 9 and then placed on the cutter receiver 4, the support of the arcuate grooved pieces 6 and 7 allows the shaft center of the shaved cutters 5 and 5 'to be supported. The angle of rotation around can be adjusted. In FIG. 2, for convenience of the adjustment of the rotation angle, a case is shown in which the scale N to be illuminated with the index N engraved on the cylindrical jig 9 is provided on the arc-shaped concave groove piece 7.

In the illustrated example, the blade receiver 4 has a pin shaft connected to the V-groove 1.
The relative swinging of the arcuate groove-shaped pieces 6, 7 can be guided by the lifting and lowering adjustment tool 8, which shows the case supported by 2, so that the angle in the longitudinal direction of the handle 5 can be adjusted. By adhering the cushion sponge 19 to the first half of the lower surface, the above adjustment can be performed smoothly and delicately. The cushion sponge 19 can be replaced with a spring such as a torsion spring or a leaf spring.

The groove shape of the arc-shaped concave groove-shaped pieces 6, 7 may be deformed as the case may be, for example, like a valley-shaped groove.
The pin shaft can be supported by a bush or other pivot shafts can be used. In addition, as shown in FIG. 2, an arcuate concave groove-shaped piece 7 is formed separately from the blade receiver 4, and for example, a long groove hole 7a and a screw 7b are used. The remaining arc-shaped concave groove piece 6 may be deformed so as to be able to adjust its height, and the function of the elevation adjusting tool 8 may be assisted. In this case, a straight scale D 'is provided along the longitudinal direction of the long slot 7a, and the trailing edge of the blade receiver 4 can be used as an index N' as a guide for the height adjustment.

FIG. 1 shows an example in which the handle 5 has a diagonal cutting blade called a sword and an engraving sword. When the front blade, which forms a cutting edge together with the back blade at the front end of the blade, such as a flat sword having a blade or a triangular sword having a V-shaped cutting blade, forms a flat surface, the front blade formed of this flat surface makes full contact with the grinding surface 2. The posture of the shaved blade 5 is guided by adjusting the inclination angle in the longitudinal direction and the rotation angle around the axis.

In the example shown in FIG. 1, the sliding table 3 is placed on a surface S parallel to the grinding surface 2 while holding the upper surface of the handle of the handle 5 with the handle on the blade receiver 4 with the fingertip of the operator. The front blade can be sharpened down by sliding with. The surface S may be, for example, a fluororesin-based slip-coated sheet.

In the case of using the cylindrical jig 9 as well, the holding by the fingertip is carried out in the same manner as described above. In each case, when the cutting surface has two surfaces like a triangular sword, the above-mentioned sharpening is performed for each surface. Do the same.

The blade with a handle 5 is a print sword, a round sword (refer to FIG. 2) called a piece sword, a flat circle sword called a sword, and a chisel of a chisel, Nakaasamaru, Asamaru, Nakafukamaru. When the front edge is made of a curved surface, such as a round sword divided into a deep circle and an extra deep circle, the inclination angle and the rotation angle should be adjusted and the restraint should be made to be in a posture to be in contact with the grinding surface 2 at the generatrix. The lower sharpening can be achieved by performing the lower sharpening in accordance with the rotational movement of the handle 5 on the cutter receiver 4 around the axis. At this time, it is preferable to use the cylindrical jig 9 shown in FIG. That is, it is preferable to turn the cylindrical jig 9 forward while pressing the cylindrical jig 9 along the arc-shaped concave groove-shaped pieces 6 and 7 of the blade receiver 4 and turn it in the opposite direction while pulling the remaining arc for the rest.

In this case, the sliding table 3 is used as shown in FIG. 1 because the front edge of the blade of the handle 5 having a long blade is so long that the front blade to be sharpened cannot be brought into full contact with the grinding surface. The dowels or mortises 1 shown in FIG.
The liner 20 with 1 'is interposed.

As shown in another embodiment in FIG. 3, the arc-shaped concave groove-shaped piece 6 on the blade edge side is provided with a pair of side walls 4a, 4a of the blade receiver 4.
4b, the guide blades 6a and 6b can be slidably adjusted in each of the inclined slots 4c and 4d provided in the groove 4b. The guide blades 6a, 6b are inclined long slots 4c, 4d until the front blade is brought into contact with the abrasive surface 2 at the entire surface or at least at the generatrix in a state of being in contact with the concave groove-shaped piece 6.
And with the help of the vertical slot 7a, the screw 7b can be screwed into the position supporting the tail end of the nigiri handle with the help of the vertical slot 7a.
In the figure, reference numeral 7c denotes a screw stopper, and the screw head of the screw 7b is not shown in the figure. Here, the slotted slots 4c, 4
A rubber friction sheet 4e is fixed to the pair of side walls 4a and 4b along the lower edge of the guide wing piece 6 by bonding or the like.
It is more desirable to make the sliding movements of a and 6b smooth and to easily hold them. In this example, the lifting and lowering adjustment device 8 is used.
Shows a case composed of a pin shaft 8 'horizontally fixed to the slide table 3 and a semi-circular groove-shaped saddle 12 "fixed to the lower surface of the blade receiver 4, and 19 is the same cushion as in FIGS. It is a sponge.

[0019]

Since the present invention does not cause delusion during the sliding stroke which often occurs during the manual sharpening work of the blade of the chisel, there is no irregularity of the leading edge of the sharpened surface,
Excellent sharpness is ensured.

[Brief description of the drawings]

FIG. 1 is a perspective view of a blade sharpener according to the present invention.

FIG. 2 is an exploded perspective view of a part and a sectional view of a main part.

FIG. 3 is a perspective view of another embodiment.

[Explanation of symbols]

1 Grinding stone 2 Grinding surface S plane 3 Sliding table 4 Blade holder, 4a, 4b side wall, 4c, 4d Slotted groove with slope, 4e Rubber friction sheet 5, 5 'Handle with blade 6 Arc-shaped concave grooved piece, 6a, 6b Guide wing piece 7 Arc-shaped concave groove shaped piece, 7a vertical slot hole, 7b screw, 7c screw restraining piece 8 Elevation adjustment tool, 8 'fixed pin shaft 9 Cylindrical jig, 9a, 9b cut groove N, N' index D , D 'scale 10 chuck 11, 11' dowel (thick pattern) or tenon (pattern) connection 12V groove, 12 'bush, 12 "semi-round grooved saddle 13 receiving plate, 13a front plate, 13b rear plate, 13c, 13d long slot 14 square frame, 14a, 14b side wall, 14c bottom wall 15 anvil 16 push screw 17 abutment plate 18a, 18b push screw 19 cushion sponge 20 liner

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[Procedure amendment]

[Submission date] October 12, 2000 (2000.10.
12)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

Claims (5)

[Claims] 1. A grinding wheel 1 having a grinding surface 2 arranged in a smooth plane and a slide 3 movable in a plane S parallel to the grinding surface 2 are provided. It is possible to adjust the inclination angle in the longitudinal direction and the rotation angle around the axis and restrain the restraint thereof so that the front blade to be ground down at its front end should be in a position to be in contact with the grinding surface 2 at the entire surface or at least the generatrix. A knife sharpening tool for a chisel having a blade holder 4 for holding the knife. 2. The cutter receiver 4 has a pair of arcuate groove-shaped pieces 6, 7 spaced apart in the direction of the axis of the handle 5 with a handle, and at least one of the arcuate groove-shaped pieces is the other. 2. A sharpening tool for a chisel as claimed in claim 1, further comprising a lifting and lowering adjustment tool for the arcuate groove-shaped piece. 3. A blade receiver 4 is combined with a cylindrical jig 9 supported by a pair of arcuate groove-shaped pieces 6 and 7, and the cylindrical jig 9 has a handle with a handle 5 'therein. 3. The sharpening tool for a chisel according to claim 2, further comprising a chuck 10 for fixing. 4. The slide 3 is a dowel (thick handle) or a tenon (handle).
4. A sharpening tool for a chisel according to claim 1, 2 or 3, wherein the sharpening tool has a multi-stage structure by a connection 11. 5. The blade-shaped arcuate groove-shaped piece 6 is provided with a blade receiver 4.
Slotted grooves 4c, 4 provided in the side wall pairs 4a, 4b of
d having guide wing pieces 6a and 6b that can be slidably adjusted in d.
5. A sharpening tool for a chisel according to claim 2, 3 or 4.