JPH0586451U - Blade polishing machine - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To realize a blade polishing device having the following advantages. (1) Obtain an accurate polishing angle. (2) The force applied in the width direction is made uniform, and polishing is performed uniformly. (3) Perform highly efficient polishing work. (4) Miniaturize, simplify, and reduce the cost of the mechanism. [Structure] Blade fixing base 1 for fixing the blade 13, and blade 13
A roller 7 that contacts the grindstone 14 is also provided. An adjusting screw 12 is screwed to the rear of the blade fixing base 1 to rotatably support the roller supporting frame 9 on which the roller 7 is rotatably supported on the blade fixing base 1 and a spring 10 for the blade fixing base 1 side. The pressure is applied to the adjusting screw 12 so as to press it. Adjustment screw 1
2 is arranged at the center of the rear part of the blade fixing base 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a blade polishing apparatus suitable for polishing a blade used by being incorporated in, for example, woodworking equipment.

[0002]

[Prior Art]

 The cutting edge of the cutting tool used by incorporating it into woodworking equipment becomes blunt as it is used and requires polishing. A woodworking blade and its polishing will be described by taking a plane blade as an example. Figure 7 shows a side view of the plane knife. Reference numeral 13a denotes a polishing surface of the blade 13, and an angle formed by the blade front surface 13c and the polishing surface 13a is referred to as a blade angle in this specification.

The cutting edge angle is uniquely determined by the structure of the plane and suitable cutting conditions, and a value of about 30 ° is usually adopted. It is not preferable that this value changes due to polishing, because it destroys the optimum conditions for cutting.

The line of intersection between the polishing surface 13a and the front surface 13c of the cutting edge becomes the cutting edge 13d. Therefore, the blunted cutting edge can be sharpened by polishing the polishing surface 13a.

[0005] The points for sharpening a blunt cutting edge by re-polishing will be described. As shown in FIG. 7, the blade 13 is polished by pressing it against the grindstone surface 14a of the grindstone 14 and causing relative movement between the two. In the following description, the angle formed by the cutting edge front surface 13c and the grindstone surface 14a is referred to as a polishing angle.

In the polishing method of forming the cutting edge by the polishing surface 13a, in order to efficiently obtain a sharp cutting edge, the polishing angle is matched with the already formed cutting edge angle, that is, the already formed polishing surface 13a. It is desirable to bring the blade into close contact with the polishing surface 14a. The polishing operation continues until the blunted cutting edge is removed, but by matching the polishing angle to the existing cutting edge angle, the required polishing amount is minimized and polishing is performed efficiently.

If polishing is performed without matching the polishing angle to the already formed cutting edge angle, there are problems that the polishing takes time and the cutting edge angle changes as the polishing is repeated.

If the polishing surface 13a is not uniformly polished in the width direction of the blade edge, when the blade 13 is attached to a plane, the protrusion size of the blade 13 from the plane becomes uneven, and the cutting is not performed uniformly. The problem occurs. Since the polishing amount of the blade is proportional to the pressing force against the grindstone 14, it is desirable to press the blade 13 against the grindstone surface 14a with a uniform force for polishing.

In the polishing operation that depends only on human hands, highly skilled skills are required to satisfy these conditions. Various polishing devices have been devised to solve this problem, but these leave room for improvement.

[0010]

[Problems to be solved by the device]

 For example, in the polishing apparatus reported in Japanese Utility Model Laid-Open No. Hei 1-92354, since the roller is arranged behind the cutting tool, the distance from the cutting edge to the roller in the state where the polishing apparatus is attached is small. There is a problem in that the grinding wheel becomes longer and the range of use of the grindstone surface becomes narrower in the grinding operation by mounting it on the grindstone, which lowers the polishing efficiency.

In addition, since the roller is attached to the sliding member and the position of the roller is adjusted by sliding the roller vertically with an adjusting screw, the mechanism becomes complicated and rattling easily occurs. was there.

In the polishing apparatus reported in Japanese Patent Laid-Open No. 47-18095, the adjusting portion is arranged on the side surface of the blade, and the state in which the polishing apparatus is attached to the blade 13 is In contrast to the contrasting direction when viewed from the polishing direction, there is the problem that in a polishing operation in which both hands are attached to the polishing device, the force applied to the polishing device from each hand is less likely to be uniform and polishing tends to be uneven. It was

An object of the present invention is to solve the problems of the conventional apparatus and to realize a polishing apparatus having many advantages as follows.

(1) A polishing device capable of efficiently obtaining a high-performance cutting edge by stabilizing the adjustment mechanism and improving accuracy to accurately match the polishing angle with the already formed cutting edge angle. To realize. (2) The state in which the blade 13 is attached to the polishing device is symmetrical with respect to a plane that is perpendicular to the blade edge and bisects the width direction of the device, so that the force applied to the device during polishing is uniform. In this way, a polishing apparatus that can perform polishing uniformly is realized. (3) By arranging the roller on the back side of the blade fixing surface, a polishing device capable of highly efficient polishing work is realized. (4) The cost of the polishing device is reduced by downsizing and simplification of the mechanism.

[0015]

[Means for Solving the Problems]

 In a blade polishing device consisting of a blade fixing base for fixing the blade and a roller that comes into contact with the grindstone together with the blade, an adjusting screw is screwed to the rear of the blade fixing base so that the roller support frame on which the roller rotates is supported. The structure is such that it is rotatably supported on the blade fixing base and is urged toward the blade fixing base by a spring so that it is pressed against the adjusting screw.

The polishing device has a symmetrical shape with respect to a plane that is perpendicular to the cutting edge and bisects the width direction in consideration of arranging the adjusting screw in the center of the rear portion of the cutting tool fixing base.

[Action]

 According to the present invention, in the blade polishing device including the blade fixing base for fixing the blade and the roller for contacting the grindstone with the blade, the adjusting screw is screwed to the rear of the blade fixing base so that the roller is rotatably supported. The roller support frame is rotatably supported by the tool holder and is urged toward the tool holder by a spring so that it is pressed against the adjusting screw. In this configuration, when the adjusting screw is rotated, the position of the support frame changes, so that the position of the roller with respect to the tool fixing base can be adjusted.

Since the polishing device has a symmetrical shape with respect to a plane that is perpendicular to the cutting edge and bisects the width direction by taking into consideration the arrangement of the adjusting screw in the center of the rear part of the cutting tool fixing base, it can be added by both hands of a person. The force becomes uniform in the width direction, and the polishing is performed uniformly in the width direction.

Since the roller support frame is rotatably supported on the cutter fixing base, the position of the roller arranged near the back surface of the cutter is adjusted by the adjusting screw arranged at the rear of the polishing device to the front side of the device. Can be adjusted more.

Since the roller support frame is rotatably supported on the tool fixing base and is biased toward the tool fixing base by the spring, unnecessary rattling of the roller support mechanism is reduced and polishing work is performed. While stabilizing, the polishing angle can be adjusted precisely and easily, and a blade with excellent sharpness can be finished.

[0020]

【Example】

 Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a cross section of a part of a polishing apparatus 20 according to a first embodiment of the present invention, FIG. 2 is a view in the X direction indicated in FIG. 1, and FIG. A side view is shown. In this specification, each part of the polishing apparatus is called as follows. The part near the cutting edge of the attached cutting tool is called the front part, the part far from the cutting edge is the rear part, the side where the cutting tool is attached is called the front side, and the opposite side is called the back side. The direction parallel to the cutting edge is called the width direction.

As shown in FIGS. 1 to 3, 1 is a blade fixing base, 1 a is a blade fixing surface provided on the surface of the blade fixing base 1, and 1 e is provided along both sides of the blade fixing surface 1 a. It is a bank.

A side regulating screw 15 is screwed into the bank portion 1e. The side regulating screw 15 adjusts and regulates the position of the blade 13 in a direction parallel to the cutting edge 13d.

Reference numeral 16 denotes a stopper, which is fixed to the blade pressing plate 2 by a screw 17 which is inserted through a long hole 16b provided in the stopper. By abutting the blade 13 against the blade control surface 16a provided on the stopper 16, the position of the blade 13 in the direction perpendicular to the blade tip 13d is controlled.

Numerals 3 and 4 are bolts, which are inserted into holes 2 a and 2 b (not shown) provided in the tool holding plate 2 and screw holes 1 c and 1 d (not shown) provided in the tool fixing base 1. Each is screwed together.

The blade 13 is fixed to the blade fixing base 1 by sandwiching the blade 13 between the blade fixing surface 1 a and the blade pressing plate 2 and tightening the bolts 3 and 4.

As already described in FIG. 7, since the polishing angle of the blade of the plane is about 30 °, there is a space between the back surface 13 f of the blade and the surface of the grindstone. The adjusting mechanism for the roller 7 is arranged.

Reference numeral 12 is an adjusting screw screwed into a position which divides the rear portion of the blade fixing base 1 into two parts in the width direction. The roller 7 is rotatably attached to a roller support frame 9 made of sheet metal by a shaft 8.

The roller support frame 9 is provided with a hole 11b provided in the roller support frame 9 and a screw 11 for inserting the coil spring 10 into the bottom portion 1f of a groove portion 1g provided at a position dividing the width direction into two on the back surface of the tool holder 1. , Is attached at a position intermediate between the adjusting screw 12 and the cutting edge 13 under pressure. The screw 11 is provided with a shaft portion 11a, and the hole portion 9b is fitted with the shaft portion 11a.

The material of the roller 7 is not particularly limited and may be a metal type or a non-metal type, but it is more preferable that it is hard to wear the grindstone. In the embodiment of the present invention, synthetic resin nylon is used. Has been adopted.

The width of the groove portion 1 g is slightly wider than the width of the roller support frame 9. Therefore, the roller support frame 9 is guided and moved by the groove 1g, and the movement of the groove 1g in the width direction is suppressed.

The hole 9b and the shaft portion 11a are fitted with each other with a small gap, and the roller 7 is supported by the roller support frame 9 by the shaft 8 which is precisely fitted. There is little backlash, and polishing work is stabilized. It is generally known that highly accurate fitting can be easily realized in a combination of a hole and a shaft.

Since the roller support frame 9 is biased by the spring 10 toward the tool fixing base 1 and pressed against the adjusting screw 12, the adjusting screw between the guide roller supporting frame 9 and the tool fixing base 1 is adjusted. There is no play in the 12 movement directions, and the polishing angle is precisely adjusted.

In addition, the distance between the end 9a and the contact portion of the tip 12a of the adjusting screw 12 is made larger than the distance between the end 9a and the shaft 8, and both distances are Due to the lever ratio, the moving distance of the roller 7 becomes smaller than the moving distance of the adjusting screw 12, the position of the roller 7 is adjusted precisely, that is, the polishing angle is adjusted, and excellent polishing is realized. It

As shown in FIGS. 2 and 3, the polishing device 20 has a symmetrical shape with respect to a plane that is perpendicular to the cutting edge 13d and bisects the width direction. In the polishing work using the polishing device 20, both hands are placed on the polishing device 20 and reciprocate while being pressed against the grindstone surface 14a.

Since the polishing amount is proportional to the pressing force, it is necessary to apply a uniform force in the width direction of the polishing device 20 in order to uniformly polish the polishing surface 13a. Since both hands are placed near both ends of the polishing device 20 in the width direction, the applied force is likely to be non-uniform in the width direction unless the touching parts of the hands have the same shape. For this reason, the polishing apparatus 20 of the present invention has a symmetrical shape in which the hands are held.

As shown in FIG. 2, the adjusting screw 12 is screwed to a position which divides the rear part of the tool holder 1 into about two parts in the width direction in order to make the shape of the polishing device 20 symmetrical. The tip portion 12a is in contact with the roller support frame 9.

When the adjusting screw 12 is rotated, the screw 12 moves forward or backward, and the roller support frame 9 with which the front end 12 a of the screw 12 abuts, the roller support frame 9 resists the biasing force of the coil spring 10 or is biased by the biasing force. It rotates in a circular orbit centered around the portion 9a. This circular orbit is substantially perpendicular to the cutting edge 13d and substantially along a plane that bisects the width direction of the polishing apparatus 20.

In this way, the position of the roller 7 which is rotatably supported by the roller support frame 9 and which protrudes from the cutter fixing base 1 can be changed by the adjusting screw 12.

When the distance between the cutting edge 13d and the roller 7 is r and the length of the grindstone 14 is t, the movable distance on the grindstone surface 14a of the polishing apparatus 20 is a value obtained by subtracting r from t, The smaller r 1 is, the larger the movable distance is. Therefore, in the polishing work performed by reciprocating the polishing apparatus 20 on the grindstone surface 14a, the smaller r is, the larger the polishing amount per reciprocation is, and the higher the efficiency of the polishing work is.

Reducing r means that the roller 7 is brought closer to the cutting edge portion, and this is achieved by disposing the roller 7 between the back surface 13f of the tool and the grindstone surface as in this embodiment. To be done.

Further, the position of the roller 7 is adjusted by applying a rule to the cutting edge portion of the blade 13 and the cylindrical surface 7a of the roller 7 so that the line connecting the cutting edge 13d and the cylindrical surface 7a matches the polishing surface 13a. Be seen. Therefore, there is a problem in workability with a configuration in which a ruler is applied and adjustment is performed from the back side of the device, and adjustment from the front side is desirable.

Requirement for arranging the roller 7 in the vicinity of the back surface of the blade, which is required to improve the efficiency of polishing work, and for arranging the position adjusting means on the surface side of the device, which is required from the viewpoint of facilitating the position adjustment. The present invention makes it possible to achieve both.

That is, the roller support frame 9 is supported so as to be rotatable at a position close to the blade edge 13d on the back surface of the tool holder 1, and the end portion on the side opposite to the supporting side is the rear portion of the tool holder 1. It is possible to satisfy both requirements by the configuration in which the blade is extended to the rear and the blade is fixed to the adjustment screw that is screwed from the surface direction of the polishing device 20 in the rear of the tool fixing base 1.

INDUSTRIAL APPLICABILITY The present invention provides a preferable structure for a polishing apparatus such as a roller support mechanism with less backlash, a highly accurate roller position adjusting mechanism, a symmetrical structure, a surface adjusting mechanism, and a roller arrangement that increases the efficiency of polishing work. It is all realized.

The polishing operation of the blade using the polishing device 20 is performed in the following procedure. The blade 13 is placed on the blade mounting surface 1a, the side regulating screw 15 is rotated to position the blade 13 approximately in the center of the blade mounting surface 1a in the width direction, and the side regulating screws 15 arranged at both ends of the blade 13 Make sure there is less play between the blades 13.

The screw 16 is loosened to free the stopper 16, and the position of the blade 13 in the direction perpendicular to the blade edge 13d is roughly adjusted. This position is adjusted so that the line connecting the cutting edge 13d and the cylindrical surface of the roller 7 is substantially aligned with the already formed main polishing surface 13a. The blade regulating surface 16a of the stopper 16 is brought into contact with the end of the blade 13, and the screw 17 is tightened.

By regulating the position of the blade 13 by the side regulating screw 15 and the stopper 16, even if the blade 13 is removed from the polishing device 20 during or after polishing, the position is accurately reproduced and the polishing device 18 is removed. Can be attached to.

The bolts 3 and 4 are tightened, the blade 13 is pressed against the blade mounting surface 1 a by the blade pressing plate 2, and is fixed to the blade mounting base 1.

Then, a ruler is applied to the cutting edge portion and the cylindrical surface 7a of the roller 7, and the adjusting screw is adjusted so that the line connecting the cutting edge 13d and the cylindrical surface 7a of the roller 7 matches the already formed polishing surface 13a. Rotate 12.

When the polishing device 20 to which the blade 13 is attached and the polishing angle is adjusted is placed on the grindstone surface 14a, the polishing surface 13a and the cylindrical surface 7a come into contact with the grindstone surface 14a, and the polishing device 20 reciprocates. Then, the roller 7 rotates, the blade 13 is polished by the grindstone surface 14a, a new polishing surface 13a is formed along the already formed polishing surface, and the polishing surface 13a and the cutting edge front surface 13c are intersected with each other. A new cutting edge 13d is formed.

As described above, according to the first embodiment, in the polishing device 20 including the blade fixing base 1 for fixing the blade 13 and the roller 7 that contacts the blade 13 together with the blade 13, the blade 13 is perpendicular to the blade edge 13d. A roller support frame 9 on which a roller 7 is rotatably attached is rotatably attached to the tool fixing base 1 along a plane that divides the width direction into two parts, and an adjusting screw 12 is provided on the rear surface of the tool fixing base 1 for the above-mentioned surface. The roller support frame 9 is urged toward the tool fixing base 1 side by a spring 10 and pressed against the adjusting screw 12 by being screwed together. As a result of adopting such a configuration, the following effects are obtained.

Since the polishing device 20 has a symmetrical shape with respect to a plane that is perpendicular to the cutting edge 13d and bisects the width direction, the force applied by both hands of the person is uniform in the width direction, and the polishing is performed uniformly.

The roller 7 can be arranged in the vicinity of the blade back surface 13f, the distance r between the blade edge 13d and the roller is reduced, and the grindstone surface 14a can be effectively used during the polishing work. As the work efficiency increases, downsizing of the polishing equipment will be realized.

The backlash of the roller 7 with respect to the cutter fixing base 1 in the polishing direction is small, the polishing operation is stabilized, and excellent polishing is realized.

Since the roller support frame 9 is biased by the spring 10 toward the tool fixing base 1 and pressed against the adjusting screw 12, the adjusting screw between the guide roller supporting frame 9 and the tool fixing base 1 is adjusted. There is no play in the 12 movement directions, the polishing angle can be precisely adjusted, and excellent polishing is realized.

Since the distance between the end 9a of the roller support frame 9 and the shaft 8 is larger than the distance between the end 9a and the tip 12a of the adjusting screw 12, the lever ratio of both distances is Due to this, the moving distance of the roller 7 becomes smaller than the moving distance of the adjusting screw 12, the polishing angle can be adjusted precisely, and excellent polishing is realized.

Since the side regulating screw 15 and the stopper screw are attached to the blade fixing portion, the blade mounting position can be roughly adjusted, and the blade can be mounted again with good reproducibility after being removed. There is an advantageous effect in operation.

The first embodiment is composed of simple and low-priced parts, is easy to manufacture, and can provide the polishing apparatus 20 at low cost.

FIG. 4 shows a polishing apparatus 30 of the second embodiment. The difference from the polishing device 20 of the first embodiment is the part relating to the attachment of the blade. The adjusting mechanism has the same structure as that of the first embodiment. Therefore, the same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

The present embodiment has a configuration suitable for polishing a spare blade used for a spare blade type plane or the like. The adjusting mechanism incorporated between the cutter fixing base and the roller has the same structure as that of the first embodiment.

As shown in FIG. 4, the polishing apparatus 30 is composed of a blade fixing base 33, a blade pressing plate 32, a bolt 31, and an adjusting mechanism section using a roller 7 having the same structure as in the first embodiment. There is.

The blade fixing base 33 is provided with a blade fixing surface 33d and a blade stopper 33b, and the blade pressing plate 32 is inserted through the hole 32a provided therein and the screw hole 33c provided in the blade fixing base 33. It is attached to the blade fixing base 33 with bolts 31.

By placing the spare blade 34 between the blade fixing surface 33d and the blade pressing plate 32, butting it against the blade stopper 33b and tightening the nut 31, the blade 34 is fixed to the blade fixing base 33. By abutting the spare blade 34 against the blade stopper 33b, the position in the direction perpendicular to the blade edge 34d is regulated.

In this way, the spare blade 34 is fixed to the blade fixing base 33, and the adjusting screw 12 changes the protruding size of the roller 7 protruding from the blade fixing base 33 to change the polishing angle for the replacement blade 34. Is adjusted.

As described above, in the second embodiment, in the polishing device 30 including the roller 7 that contacts the grindstone surface 14a together with the spare blade 34, the spare blade 34 is attached to the tool fixing base 33 by abutting the stopper 33b. In this way, the roller supporting frame 9 for rotatably supporting the roller 7 is rotatably supported by the tool fixing base and is urged by the spring 10 toward the tool fixing base to be pressed against the adjusting screw 12. It was done. As a result of adopting such a configuration, the following effects can be obtained.

With this configuration, it is possible to dispose the roller 7 on a portion of the back surface, which is opposite to the front surface of the polishing device 30 and includes the spare blade 34, the blade pressing plate 32, and the like, and between the blade edge 13d and the roller. The distance r becomes smaller, the grindstone surface 14a can be effectively utilized during the polishing work, the efficiency of the polishing work can be increased, and the polishing apparatus can be downsized.

The disposable blade 34 to be disposable can be easily and efficiently polished with excellent finish, and a great economic effect can be obtained.

The second embodiment is composed of simple and low-cost parts, is easy to manufacture, and can provide the polishing apparatus 30 at a low cost.

In addition to these effects, the same effects as the first embodiment can be obtained, but the description thereof will be omitted.

5 and 6 show a polishing apparatus 40 of the third embodiment. The blade 13 is placed in a groove 41a provided on a blade fixing base 41 manufactured by aluminum die casting, and is fixed to the blade fixing base 41 by tightening a screw 47 screwed to the blade fixing base 41. Reference numeral 41c is a niger for deformation occurring near the end of the blade 13.

The roller 44 is rotatably attached to the roller support frame 42 made of sheet metal by a shaft 45. The roller support frame 42 is rotatably attached to a groove portion 41b provided in a position on the back surface of the blade fixing base 41 that divides the width direction into two by a shaft 48 that inserts a coil spring 43.

The roller support frame 42 is biased toward the blade fixing base 41 by a spring 43 that is inserted through a shaft 48 and arranged. The roller 44 is preferably made of a material that does not easily wear the grindstone, and in this embodiment, synthetic resin nylon is used.

When the adjusting screw 46 screwed to the tool fixing base 41 is rotated, the position of the end portion 46a changes, and accordingly, the biasing force of the spring 43 is resisted or biased to the end portion 46a. The position of the roller support frame 42 being pressed changes. In this way, the positional relationship between the blade 13 and the roller 44 is adjusted.

As shown in FIG. 6, the polishing apparatus 40 has a symmetrical shape with respect to a plane that is perpendicular to the cutting edge 13d and bisects the width direction. In the polishing work performed by mounting the polishing device 40 on the grindstone 14, both hands are placed on the polishing device 40, and the polishing device 40 is moved back and forth while being pressed against the grindstone surface 14a.

Since the polishing amount is proportional to the pressing force, it is necessary to apply a uniform pressing force in the width direction of the polishing device 40 in order to uniformly polish the polishing surface 13a. Since both hands are provided at both ends of the polishing device 40 in the width direction, the applied force tends to be non-uniform in the width direction unless the touching parts of both hands have the same shape. For this reason, the polishing apparatus 40 of the present invention has a symmetrical shape in the width direction.

As described above, according to the third embodiment, in the polishing device 40 including the roller 44 that contacts the grindstone surface 14a together with the blade 13 to be polished, the roller support frame 42 that rotatably supports the roller 44 is It is rotatably supported by the tool fixing base 41 in the vicinity of the tool fixing surface 41d and is urged toward the tool fixing base by a spring 43 so as to be pressed against an adjusting screw 46 screwed to the rear part of the tool fixing base 41. The configuration is adopted. As a result of adopting such a configuration, the following effects are obtained.

Since the polishing device 40 has a symmetrical shape with respect to the plane that is perpendicular to the cutting edge 13d and divides the width direction into two, the force applied by hand becomes uniform in the width direction, and the polishing is performed uniformly.

The roller 44 can be arranged in the vicinity of the back surface 13f of the blade, the distance r between the blade edge 13d and the roller is reduced, and the grindstone surface 14a can be effectively used during the polishing work. The efficiency of the polishing is increased and the polishing machine is downsized.

Since the roller support frame 42 is rotatably supported by the blade fixing base 41 by the shaft 48 and the roller 44 is rotatably supported by the roller support frame 42 by the shaft 45, the blade fixing base 41 of the roller 44 is supported. There is little backlash in the polishing direction with respect to, the polishing work is stabilized, and excellent polishing is realized.

Since the roller support frame 42 is biased by the spring 43 toward the tool fixing base 41 and pressed against the adjusting screw 46, the adjusting screw between the guide roller supporting frame 42 and the tool fixing base 41 is adjusted. Since there is no play in the moving direction of 46, the polishing angle can be precisely adjusted, and excellent polishing is realized.

Since the distance between the shaft 48 and the tip 46a of the adjusting screw 46 is made larger than the distance between the shaft 48 and the shaft 45, the adjustment screw 46 moves due to the lever ratio of both distances. The moving distance of the roller 44 becomes smaller than the distance, the polishing angle can be adjusted precisely, and excellent polishing is realized.

Since the blade fixing base 41 is provided with the stopper surface 41e, it is possible to reattach the blade with good reproducibility after removing the blade, which is advantageous in operation.

The third embodiment is composed of simple and low-priced parts, is easy to manufacture, and can provide the polishing apparatus 40 at low cost.

It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that various other configurations can be adopted without departing from the spirit of the present invention.

In the above-mentioned embodiment, the polishing device for polishing the blade of the plane was taken as an example for carrying out the present invention, but it can be applied to other blades such as chisels.

[0086]

[Effect of the device]

The present invention is a blade polishing apparatus comprising a blade fixing base for fixing a blade and a roller that comes into contact with the grindstone surface together with the blade, and an adjusting screw is screwed to the rear portion of the blade fixing base to rotatably support the roller. The roller support frame is rotatably supported on the blade fixing base and is pressed against the adjusting screw by a spring. As a result of adopting such a configuration, the following effects can be obtained.

Since the polishing device 20 has a symmetrical shape with respect to a plane that is perpendicular to the cutting edge 13d and bisects the width direction, the force applied by both hands of the person is uniform in the width direction, and the polishing is performed uniformly.

Even though the adjusting screw is arranged at the rear part of the polishing device, the roller can be arranged at the front part and in the vicinity of the back surface of the blade, and the distance r between the blade tip and the roller becomes small, so that The surface of the grindstone can be effectively used during the work, which improves the efficiency of the polishing work and realizes the downsizing of the polishing apparatus.

Since the roller support frame is rotatably supported by the blade fixing base, there is little play in the polishing direction of the roller with respect to the blade fixing base, the polishing work is stabilized, and excellent polishing is realized.

Since the roller support frame is rotatably supported on the blade fixing base and is pressed against the adjusting screw by the spring, it is possible to adjust the moving direction of the adjusting screw between the roller supporting frame and the blade fixing base. There is no backlash, the polishing angle can be adjusted precisely, and excellent polishing is achieved.

Further, since the blade stopper is attached, the blade attachment position can be roughly adjusted, and the blade can be detached and then attached again with good reproducibility, which is advantageous in operation. ..

INDUSTRIAL APPLICABILITY The present invention is composed of simple and low-priced parts, is easy to manufacture, and can provide a blade polishing device at low cost.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of a polishing apparatus of the present invention.

FIG. 2 is an X-direction arrow view showing the first embodiment of the polishing apparatus of the present invention.

FIG. 3 is a side view showing a first embodiment of the polishing apparatus of the present invention.

FIG. 4 is a front view showing a second embodiment of the polishing apparatus of the present invention.

FIG. 5 is a front view showing a third embodiment of the polishing apparatus of the present invention.

FIG. 6 is a sectional view showing a third embodiment of the polishing apparatus of the present invention.

FIG. 7 is an explanatory diagram of a blade.

[Explanation of symbols]

 1 Tool Fixing Base 2 Tool Holding Plate 3, 4 Bolt 7 Roller 8 Axis 9 Roller Support Frame 10 Coil Spring 11 Screw 12 Adjusting Screw 13 Cutlery 14 Grinding Stone 15 Side Control Screw 16 Stopper 20 Polishing Device 30 Polishing Device 32 Blade Pressing Plate 34 Replacement Blade 40 Polishing device 41 Tool holder 42 Roller support frame 43 Spring 44 Roller 46 Adjustment screw

Claims (2)

[Scope of utility model registration request] 1. A tool fixing base for fixing a cutting tool, and a roller rotatably supported by a roller supporting frame, wherein the vicinity of one end of the roller supporting frame is rotatably supported by the cutting tool fixing table. A blade polishing device adapted to adjust the positional relationship between the blade fixing base and the rollers by attaching an adjusting screw to the rear of the blade fixing base and changing the position of the roller support frame by the adjusting screw. 2. The blade polishing apparatus according to claim 1, wherein the roller support frame is pressed against the adjusting screw by a spring.