JPS6113248Y2 - - Google Patents

Description

[Detailed description of the invention] In this invention, both base grinding wheels are installed in parallel so that both operating surfaces can be raised and lowered in parallel positions, and a ruler whose angle can be adjusted is placed parallel to both operating surfaces of the grinding wheels. installed in position. This relates to a knife sharpening machine in which workpieces, cutlery, and other workpieces are supported and slid on the ruler and ground by the working surface of the grindstone.

Let's take an example of a traditional sharpening machine. One side on which the flat or ring-shaped grindstone rotates while forming a flat surface becomes the operating surface. When grinding a blade along a line from the center point of the grindstone to the outer periphery during the work process, the grinding range of the blade is limited due to the difference in the grinding rate between the inner circumferential surface and the outer circumferential surface of the operating surface. When grinding on a line from the outer periphery of the grindstone to the outer periphery, the center line of the grindstone becomes the boundary and the operating direction is reversed. Irregular levels of wear accumulate depending on the progress of the work described above, and the working surface of the grindstone needs to be repaired frequently.Technical skill is required to obtain a high-precision grinding surface, and the long shape of the blade, flat shape, etc. This will interfere with grinding.

When using a sharpening machine in which the grindstones with the functions and effects described above are arranged in parallel and a ruler is installed on each operating surface. When grinding, such as aligning the cutting edge of the blade, coarse grinding, fine grinding, and fine adjustment of the cutting edge, the grinding angle of the blade should be adjusted to the working surface of the grinding wheel to prevent the replacement of the working grindstone for each process and the loss of wear during machining. Careful adjustment of the ruler position is often required to ensure that they match.

This invention raises and lowers the tapered flat whetstones on both sides to change the working whetstones and adjust the amount of grinding, and adjust the grinding angle of the blade with the angle of the ruler. The knife is slid on the ruler and ground using the working surface of the whetstone. To provide a knife sharpening machine that can improve the defects of the conventional whetstone and sharpening machine described above and can exhibit excellent functions.

Embodiments of the present invention will be described with reference to the drawings. Four supports 2 are installed in parallel on a machine base 1, and bearing discs 3, ₃₁ are fitted into sliding grooves on the inner surface thereof. The side surface of the support column 2 and one side of the bearing discs 3, ₃₁ are connected by set screws 4, ₄₁ so as to be able to be raised and lowered, and handles 5, ₅₁ for operating the set screws 4, 41 are provided on the set screws 4, ₄₁ . There is. A bearing 6 is installed at an inclined angle on the side surface of the bearing disc 3, ₃₁ , and a shaft 7, ₇₁ is fitted into the bearing 6, and the tip thereof is a concave taper flat grindstone 8 on both bases that is in contact with the cutter. , 8 ₁ are installed in parallel positions.

A support 17 for a ruler 10 is installed on the machine stand 1, and both ends of the lower part of the ruler stand 11 are attached to the set screws 1 at both ends of the upper part.
5, 15 ₁ are interposed so that the position of the ruler stand 11 can be adjusted, and a handle 16, 16 ₁ and a butterfly nut 18, 1 are connected to set screws 15, 15 ₁ to operate the ruler stand 11.
8 ₁ is provided. One end of the back surface of the ruler 10 facing the front surface of the ruler stand 11 is connected with a hinge 12, and the opposite end thereof is connected with a set screw 13, and a handle 14 and a screw 23 for operating the set screw 13 are connected.
is provided. The ruler 10 is the grindstone 8, 8
It is installed in a position parallel to both operating surfaces of ₁ . Place the ruler 10 on the surface of the ruler 10 so that the sides of the ruler 10 and the ears on the back side of the guide plate 9 interlock with each other, and the guide plate 9
A configuration in which a device is installed on the surface of which the blade is fixed.

The knife sharpener is started by a motor groove wheel 21, and the rope 2 passes through the groove wheels 20, _{20 1} , 20 ₂ and is loosely fitted into the groove wheels 19 , 19 ₁ at the lower end of the shafts 7 , 7 ₁ .
2 and the rope 22 twisted once; the shaft 7 at ₁ ;
7 ₁ is activated.

We will describe the characteristics of the flat, concave taper grindstone of the present invention in which the blade is ground on the working surface of the line from the center point to the outer periphery. The coarse grindstone 8 is rotated clockwise, and the fine grindstone is rotated counterclockwise, with both operating surfaces being parallel to each other and rotated toward the center of the ruler 10. When the operating surfaces are replaced, the amount of wear and grinding is adjusted by raising and lowering the grinding wheels 8, ₈₁ .
The ruler 10, which is parallel to both operating surfaces of the grindstones 8, ₈₁ , and whose grinding interval of the blades is appropriately adjusted, further includes:
Adjust the angle of ruler 10 so that the grinding surface of the blade matches the working surface of whetstone 8 or ₈₁ . Grinding is prepared as described above, and the blade is ground at the center of the ruler 10 on which it slides.

When using the knife sharpener, the knife is fixed on the guide plate 9, and the shape of the back surface of the guide plate 9 is adjusted to be equal to the shape of the blade length, such as a straight or reversed blade, and then placed on the ruler 10. The distance at which the blade comes into contact with the operating surface of the grindstones 8, 8 ₁ is determined by the ruler 10 on which the blade is supported.
The ruler 10 is adjusted via the ruler stand 11 by operating the handles 16, 16 ₁ and butterfly nuts 18 , 18 ₁ that move the ruler horizontally and raise/lower. For each grinding operation such as aligning the cutting edge, coarse grinding, fine grinding, and fine adjustment, use the handle 14 to adjust the angle of the ruler 10 and the handles 5 and 5 so that the grinding surface of the blade matches the working surface of the grindstone 8 _{or 81} .
₁ raises and lowers the grindstones ₈ and 81 to change the working grindstone 8 or ₈₁ and adjust the amount of grinding. When sliding the guide plate 9 on the ruler 10 adjusted in the above operation and repeatedly moving from the base of the blade to the tip while grinding on the working surface from the center point to the outer periphery of the grindstone 8 or ₈₁ , the grinding surface of the blade An arc-shaped steal is obtained.

When the angle between the operating surfaces of the grindstones 8 and ₈₁ and the ruler 10 is adjusted to approximately horizontal position, and the blade is moved while being ground in a direction perpendicular to the ruler 10, it is suitable for grinding the flat part of the blade. When a grinding machine is equipped with grinding wheels 8, ₈₁ made of the same material and operated simultaneously, a grinding effect corresponding to the purpose of use can be obtained, such as doubling the grinding rate of the cutter.

Here is an example of the work of grinding a knife: (a) As explained above, the knife is fixed on the guide plate 9, placed on the ruler 10, and the ruler 10 is adjusted to an interval suitable for grinding. (b) Adjust the ruler 10 to approximately a right angle, adjust the amount of grinding by which the blade comes into contact with the grindstone ₈₁ , and manually slide the guide plate 9 onto the ruler 10 repeatedly, that is, from the base of the blade to the tip. Grinding that aligns the cutting edge by passing through the operating surface of the sliding and rotating grindstone ₈₁ . (c) Adjust the angle of the ruler 10 so that the grinding surface of the cutter matches the working surface of the grindstone 8, adjust the amount of grinding that the cutter contacts the grindstone 8, and perform the above operations for grinding and rough grinding. (d) The angle of the ruler 10 is currently changed to the grindstone ₈₁ , and the amount of grinding is adjusted, and the above operation is used to perform fine grinding. (E) A knife requires high precision and a uniform grinding angle, and the sharpness of the cutting edge in particular is determined by grinding at a delicate angle. Therefore, the grindstone 8 ₁ currently adjusts the angle of the ruler 10 to a slightly obtuse or acute angle. Then, use the above operations to lightly grind and finely adjust the cutting edge. Through the above steps, the unique grinding work of this invention is completed.

As described above, grinding preparations such as adjusting the position and angle of the ruler 10, replacing the operating grindstones 8 and ₈₁ , and adjusting the amount of grinding are adjusted by operating the handle. The rear lug of the guide plate 9 is slid against the side surface of the ruler 10, and the central part of the ruler 10 grinds the operating surface of the grindstone 8 or ₈₁ over the entire length from the base of the blade on the guide plate 9 to the tip. The blade passes through while maintaining the same amount, and the blade has a highly accurate grinding surface that is uniform over the entire length. Grinding of the flat part by moving the blade in the direction perpendicular to the ruler 10. It can be applied to a wide range of processed materials, such as grinding by operating both grinding wheels 8 _{and 81.The} entire work process is performed with simple operation while being viewed directly within the field of vision, and is highly accurate and safe.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the invention. 1st
Figure 2 is a plan view, Figure 2 is a front view with a partial cross section, Figure 3 is A.
-A' cross-sectional view, Figure 4 is a developed cross-sectional view showing power transmission. A...Motor, B...Water tank, C...Drain tank, 1
... Machine base, 2 ... Support, 3,3 ₁ ... Bearing board,
4,4 ₁ ... Set screw, 5,5 ₁ ... Handle, 6
...Bearing, 7,7 ₁ ...Shaft, 8,8 ₁ ...Whetstone,
9... Information board, 10... Ruler, 11... Ruler stand,
12... Hinge, 13... Assembly screw, 14... Handle, 15, 15 ₁ ... Assembly screw, 16, 16 ₁ ...
Handle, 17... Support, 18, 18 ₁ ... Butterfly nut, 19, 19 ₁ ... Groove wheel, 20, 20 ₁ ,
20 ₂ ... groove wheel, 21 ... groove wheel, 22, 22 ₁ ...
...rope, 23...screw.

Claims (1)

[Claims for Utility Model Registration] Four supports 2 are installed in parallel on the machine base 1,
Bearing discs 3, ₃₁ are fitted into sliding grooves on the inner surface thereof. The side surface of the support column 2 and one side of the bearing discs 3, 3 ₁ are connected by set screws 4, 4 ₁ , and the set screws 4, 4 ₁
Handles 5, ₅₁ are provided for operating the same. Bearing plate 3, ₃ Bearing 6 at an inclined angle on the side of 1
is installed, and the shafts 7, ₇₁ are fitted to the bearing 6,
Its tip is installed in a position where both operating surfaces of both base grindstones 8 and ₈₁ are parallel to each other. A support 17 for a ruler 10 is installed on the machine stand 1, and both ends of the lower part of the ruler stand 11 are attached to the set screws 1 at both ends of the upper part.
5, 15 are connected through the interposition of ₁ , and set screws 15, 15
₁ is provided with handles 16, ₁₆₁ and butterfly nuts 18, ₁₈₁ for actuating it. One end of the back surface of the ruler 10 facing the front surface of the ruler stand 11 is connected by a hinge 12, and the opposite end thereof is connected by a set screw 13, and the set screw 13 is provided with a screw and a handle 14 for operating the set screw. In this knife sharpening machine, the ruler 10 is installed in a position parallel to both operating surfaces of the grindstones 8 and ₈₁ .