JP2002011643A - Grinding machine for cutter blade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grinding machine for a cutter blade to remarkably improve the grinding efficiency of a cutter blade, reduce a cost needed for grinding, and highly stabilize regrinding precision. SOLUTION: In the grinding machine for a cutter blade, the grinding wheel 1 side is movable in the direction of a Z-axis being the same as its central line. In the grinding wheel 1, a cutting edge side 2a of a cutter blade 2 consists of three grinding wheels of a first grinding wheel 1a for grinding; a second grinding wheel 1b for grinding a recess side 2b of the cutter blade; and a third grinding wheel 1c for grinding. Or, the cutting edge side consists of two grinding wheels of one being the first grinding wheel 1a for grinding the cutting edge side and the other being the second grinding wheel for grinding a recess side and a face. By forming structure that they are arranged on the same rotary shaft 3 and a shaft is mounted, each grinding wheel 1 effects grinding through an own role and switching to the different grinding wheel 1 is easily carried out through slight movement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grinder for grinding a cutter blade, and more particularly to a grinder for grinding a bevel gear.

[0002]

2. Description of the Related Art A cutter blade used for gear cutting of a spiral bevel gear has a bar-shaped, pyramid-shaped cutting edge at its tip, and a cutting edge side for forming a tooth surface of a gear to be processed and a relief on the opposite side. The shape has a side surface and a rake surface. This cutter blade cuts the spiral bevel gear,
Generally, when about 100 gear teeth are cut, the cutting edge becomes dull. Therefore, it is necessary to re-grind the cutting edge side surface, flank side surface, rake surface and the like.

The following is a typical means for grinding this cutter blade. The first is related to Oerlikon (Switzerland).
This is as shown in FIGS. 10 and 11 (the reference numerals in the drawings correspond to those of the present invention as much as possible). This is a grinding machine having one grinding wheel 1 made of, for example, a ceramic. The outer peripheral portion of the grinding wheel 1 is formed into a convex section 14 in section, and the cross section of the outer peripheral portion of the rotating grinding wheel 1 is formed. Convex part 14
Then, the positions of the cutter blade 2 are changed, and the surfaces to be ground are sequentially brought into contact with each other to perform grinding.

FIG. 12 and FIG. 13 show the second example, which is also made by Oerlikon Co., Ltd. (the reference numerals in the drawings correspond to those of the present invention as much as possible). This is because the grinding machine uses CBN (Cubic Boron Nitrid) on the surface of the rotating body.
e, cubic boron nitride) or a grinding wheel 1 on which a grinding wheel containing abrasive grains of diamond is attached. As shown in the drawings, the cutter blade 2 is moved in the m-axis direction on the grinding wheel side and in the z-axis direction parallel to the center line of the grinding wheel 1, and the cutter blade 2 is moved. Each of the surfaces to be ground is ground by rotating in the n direction around the tip.

[0005]

By the way, the above 1
Since the means (1) uses the grinding wheel 1 made of ceramic, it is necessary to reduce the amount of grinding and repeat the grinding many times, which requires a long grinding time. Also grinding wheel 1
One cutter blade 2
It is necessary to perform treeing (shaping of a grinding wheel) every time grinding is performed, and there is a problem that the grinding efficiency is not so high from this aspect as well.

The second means is a cutter blade 1
The linear movement and rotation width are large and mechanically complicated.
In addition to problems in precision and cost, the feed rate could not be increased due to the heavy weight of the mechanism, which also required grinding time. In addition, since grinding is performed only at the corners of the grinding wheel 1 to which a grinding wheel containing abrasive grains of CBN or diamond is attached, a specific portion of the grinding wheel 1 is rapidly worn and the grinding accuracy is reduced. was there.

An object of the present invention is to solve the problems of the above conventional means. That is, an object of the present invention is to provide a cutter blade grinding machine capable of greatly improving the grinding efficiency of the cutter blade, reducing the cost required for grinding, and stabilizing the grinding accuracy with high accuracy.

[0008]

Means for Solving the Problems a) The first of the grinding machines for cutter blades according to the present invention is that the grinding surface of the rotating grinding wheel 1 can grind the surface to be ground of the cutter blade 2 so that the grinding wheel 1 side can be ground. A mechanism for vertically moving the cutter blade side in the Y-axis direction, a mechanism for horizontally moving the cutter blade 2 side in the X-axis direction perpendicular to the Y axis, and a mechanism for moving the cutter blade 2 side in the center line of the C-axis. A cutter wheel 2 provided with a mechanism capable of rotating around the cutter blade 2 and a mechanism capable of rotating the cutter blade 2 side around a B axis perpendicular to the C axis and parallel to the X axis. In addition to providing a mechanism that allows one side to move up and down in the Z-axis direction parallel to the rotation axis 3,
The above-mentioned grinding wheel 1 is made of a material which can be easily formed into a shape, and a first grinding wheel 1a for grinding a cutting edge side surface 2a of a cutter blade 2.
And a second grinding wheel 1b whose surface is made of a material having abrasive grains with little wear, and a grinding wheel 1b for grinding the flank side 2b opposite to the cutting edge side face of the cutter blade 2, and a material whose surface has abrasive grains with little wear And a third grinding wheel 1c for grinding the rake face 2c of the cutter blade 2.
The third three grinding wheels 1a, 1b, 1c are mounted on the same rotating shaft 3.

B) The second aspect of the cutter blade grinder according to the present invention is to move the grinding wheel 1 side toward the cutter blade side so that the ground surface of the cutter blade 2 can be ground with the grinding surface of the rotating grinding wheel 1. A mechanism for moving the cutter blade 2 in the longitudinal direction, a mechanism for moving the cutter blade 2 side in the X axis direction perpendicular to the Y axis, and a mechanism for moving the cutter blade 2 side in the center line C
A mechanism enabling rotation about an axis, and a cutter blade 2
In a grinding machine A for a cutter blade provided with a mechanism capable of rotating the side about a B-axis perpendicular to the C-axis and parallel to the X-axis, the grinding wheel 1 side is moved in the Z-axis direction parallel to the rotation axis 3 thereof. In addition to providing a mechanism that allows vertical movement, the grinding wheel 1
The first grinding wheel 1a for grinding the cutting edge side surface 2a of the cutter blade 2 is made of a material that is easy to shape, and the surface is made of a material having less abrasive grains, and is opposite to the cutting edge side surface of the cutter blade 2. Side flank 2b and rake face 2
and a second grinding wheel 1d for grinding c.
The second two grinding wheels 1 a and 1 d are mounted on the same rotating shaft 3.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In the cutter blade grinder having the above-mentioned structure, the grinding wheel 1 is so arranged that the grinding surface of the grinding wheel 1 can be in a grinding state with the ground surface of the cutter blade 2.
Vertical movement in the Y-axis direction on the bed 4 toward the cutter blade 2 is possible.

In addition, in addition to the above, in order to set the grinding wheel 1 corresponding to the surface to be ground of the cutter blade 2 at a predetermined vertical position, the grinding wheel 1 side is moved in the Z-axis direction, that is, in the direction of the center line of the rotating shaft 3. Movement is possible.

On the other hand, the cutter blade 2 side is a bed 4
The upper part can be moved laterally in the X-axis direction perpendicular to the Y-axis direction. In addition to this, the cutter blade 2 is set at an angle corresponding to the grinding surface of the grinding wheel 1 so that The blade 2 is rotatable around a central axis C, and the cutter blade 2 is rotatable about a B axis perpendicular to the C axis and parallel to the X axis.

The rotation of the grinding wheel 1, the vertical movement in the Y-axis direction and the vertical movement in the Z-axis direction,
Both the rotation around the C-axis and the B-axis and the lateral movement in the X-axis direction are performed by CNC (Computerized N).
It is preferable that the processing is performed by using a U.S.A.

In the first embodiment of the present invention, the grinding wheel 1 comprises a first grinding wheel 1a, a second grinding wheel 1b, and a third grinding wheel 1c.
The first grinding wheel 1a forms and grinds the cutting edge side surface 2a of the cutter blade 2 although it is constituted by sheets. Here, the cutting edge side surface 2a of the cutter blade 2 is a front end portion of the cutter blade 2 and includes a cutting line that forms a tooth surface of the gear to be processed.

In the first grinding wheel 1a, the cutting edge side surface 2a of the cutter blade 2 is different depending on the type of the gear to be processed. For this reason, it is desirable to use a material that can be easily formed into a predetermined shape, such as ceramic, for example, and the first grinding wheel 1a can be shaped by the dresser 10.

Also, a first grinding wheel according to the present invention,
b grinds the flank side 2b of the cutter blade 2,
The grinding wheel 1c is for grinding the rake face 2c.
The second grinding wheel 1b and the third grinding wheel 1c are made of a material with little wear. For example, a material with little wear, such as a material in which abrasive grains of CBN or diamond are adhered to the surface of the grinding wheel main body, is used. .

The second grinding wheel 1b and the third grinding wheel 1c are:
The flank 2b of the cutter blade 2 does not necessarily have to have good surface roughness, but the rake face 2c preferably has good surface roughness, and therefore, abrasive grains corresponding to them are used. However, since the flank side surface 2b is easy to form and the surface 2c is a simple plane, each of the grinding wheels 1b and 1c may have a corresponding shape, and the shape of the grinding wheels 1b and 1c is changed depending on the type of the cutter blade 2. It need not be, and may be a single shape.

On the other hand, the grinding wheel 1 according to the second embodiment of the present invention
Is composed of two wheels, a first grinding wheel 1a and a second grinding wheel 1d, and the first grinding wheel 1a is, like the first grinding wheel 1a,
The cutting blade side surface 2a of the cutter blade 2 is formed and ground.

The first grinding wheel 1a is preferably made of a material which can be easily formed into a predetermined shape, such as ceramic, for example. Wheel 1a is dresser 10
The shape can be adjusted by using.

The second grinding wheel 1d is used for grinding both the flank 2b and the rake face 2c.
This is because the flank side surface 2b and the surface 2c which is easy to be easily formed have a simple flat shape as described above, and accordingly have a flat shape. The shape of the second grinding wheel 1d depends on the type of the cutter blade 2. It need not be changed and may be a single shape.

The second grinding wheel 1d is desirably made of a material having little wear and having a surface to which abrasive grains of, for example, CBN or diamond are adhered. The second grinding wheel 1d
Since the rake face 2c is ground in addition to the flank side face 2b, it is preferable to select one having good surface roughness.

The three grinding wheels 1a, 1b and 1c of the first embodiment of the present invention and the two grinding wheels 1a and 1d of the second embodiment of the present invention are sequentially arranged on the rotating shaft 3. A shaft is mounted, and rotation for grinding is performed by rotation of the rotary shaft 3.

The order of the grinding wheels 1 on the rotating shaft 3 is not limited to a first grinding wheel 1a, a second grinding wheel 1b, a third grinding wheel 1c, or a first grinding wheel 1a and a second grinding wheel 1d. It is not necessary to use a different order. The above-mentioned grinding wheel 1 may be configured such that when one of them rotates, the other also rotates at the same time, but only a necessary one rotates.

The operation by the cutter blade grinder according to the present invention is started by inputting grinding data required by the cutter blade 2 to be ground into a computer and turning on an operation switch.

As a result, the grinding wheel 1 starts rotating by the rotating shaft 3 and the rotating shaft 3 moves in the Z-axis direction, that is, in the same direction as the center line, so that the grinding wheel 1 The vertical movement in the Y-axis direction is started toward the cutter blade 2 side. On the other hand, the cutter blade 2 also rotates around its center line, that is, the C axis, so that the surface to be ground is positioned at an angle corresponding to the grinding surface of the grinding wheel 1, and the lateral movement in the X axis direction is started. You. Accordingly, the cutter blade 2 undergoes desired grinding.

In this case, in the first embodiment of the present invention, the grinding wheel 1 comprises a first grinding wheel 1a, a second grinding wheel 1b, and a third grinding wheel 1c. 1a, 1
b and 1c are mounted side by side on the same rotating shaft 3.

Then, the cutter blade 2 rotates around its C axis and the grinding wheel 1 moves in the Z-axis direction, so that, for example, the cutting edge side surface 2a of the cutter blade 2 and the corresponding first grinding wheel The grinding surface of the wheel 1a is in a grinding state. With the vertical movement of the grinding wheel 1 in the Y-axis direction and the horizontal movement of the cutter blade 2 in the X-axis direction, the rotating first grinding wheel 1a performs desired grinding on the cutting edge side surface 2a (for example, FIG. 3). reference).

Next, with the grinding wheel 1 side retracted once, the cutter blade 2 rotates around the C axis, and the grinding wheel 1 side moves in the Z axis direction, so that the flank 2b of the cutter blade 2 The corresponding grinding surface of the second grinding wheel 1b is brought into a grinding state. Y on grinding wheel 1 side
The longitudinal movement in the axial direction and the lateral movement in the X-axis direction on the cutter blade 2 side cause the rotating second grinding wheel 1b to move to the flank side 2b.
The desired grinding is performed (see, for example, FIG. 4).

Thereafter, while the grinding wheel 1 is retracted once, the cutter blade 2 is rotated around the C axis and the grinding wheel 1 is moved in the Y axis direction, so that the rake face 2c of the cutter blade 2 is removed. The corresponding grinding surface of the third grinding wheel 1c enters the grinding state. Also in this case, the rotating third grinding wheel 1c performs desired grinding on the rake face 2c by the vertical movement in the Y-axis direction on the grinding wheel 1 side and the horizontal movement in the X-axis direction on the cutter blade 2 side (for example, (See FIG. 5).

On the other hand, in the second embodiment of the present invention, the grinding wheel 1
The first grinding wheel 1a and the second grinding wheel 1d are mounted side by side on the rotating shaft 3.

Also in this case, the cutter blade 2 rotates around its C-axis and the grinding wheel 1 moves in the Y-axis direction. The grinding surface of the grinding wheel 1a is in a grinding state. The vertical movement of the grinding wheel 1 in the Y-axis direction and the lateral movement of the cutter blade 2 in the X-axis direction cause the rotating first grinding wheel 1a to perform desired grinding on the cutting edge side surface 2a (for example, FIG. 6).

Next, with the grinding wheel 1 side retracted once, the cutter blade 2 rotates around the C axis and the grinding wheel 1 side vertically moves in the Y axis direction, so that the flank side 2b of the cutter blade 2 And the corresponding grinding surface of the second grinding wheel 1d are in a grinding state. By the vertical movement of the grinding wheel 1 in the Y-axis direction and the horizontal movement of the cutter blade 2 in the X-axis direction, the rotating second grinding wheel 1d performs desired grinding on the flank side surface 2b (see, for example, FIG. 7).

Then, with the grinding wheel 1 side retracted once, the cutter blade 2 rotates around the C axis, and the rake face 2c and the corresponding second grinding wheel 1d (when the flank 2b is ground). And the ground surface of the second grinding wheel) is in a grinding state. The vertical movement of the grinding wheel 1 in the Y-axis direction and the lateral movement of the cutter blade 2 in the X-axis direction cause the rotating second grinding wheel 1d to perform desired grinding on the rake face 2c (for example, see FIG. 8).

As described above, in the grinding machine according to the present invention, since three or two grinding wheels 1 are provided side by side on the same rotating shaft 3, the cutter blades 2 are sequentially rotated around the C axis. By moving the corresponding grinding wheel 1 side in the Z-axis direction and positioning the wheel, the grinding wheels 1a, 2b, 2b, 2d of the respective grinding wheels 1 can be operated by their respective cutter blades under their own roles. The two cutting edge side surfaces 2a, flank side surfaces 2b, and rake surfaces 2c are sequentially ground.

For this reason, this grinder requires only a very small amount of movement for grinding on the grinding wheel 1 side and the cutter blade 2 side, is simple, and has improved workability. The grinding accuracy is also high and stable. Further, the grinding wheel 1d according to the second embodiment of the present invention also serves as the second grinding wheel 1b and the third grinding wheel 1c according to the first embodiment of the present invention, and has a configuration of only two wheels. It has a simpler structure and movement.

The grinding wheel 1 itself is provided with a first grinding wheel 1a.
Is made of a material that is easy to shape, and grinds the cutting edge side surface 2a of the cutter blade 2. According to the first aspect of the invention, the second grinding wheel 1b is made of a material whose surface has less abrasive grains. For grinding the flank side 2b, the third grinding wheel 1c
Surface is made of a material with abrasive grains with low wear, and rake face 2
c is to be ground. A second grinding wheel 1d according to the second aspect of the present invention is made of a material having abrasive grains with little wear on the surface, and grinds the flank side 2b and the rake face 2c.

Therefore, each of the grinding wheels 1a, 1b, 1b, 1
d grinds the cutting edge side surface 2a, the flank side surface 2b, and the rake surface 2c of the cutter blade 2 based on their respective roles. This eliminates the need for truing (forming the shape of the grinding wheel) and dressing for adjusting the shape of the grinding wheel 1 because the specific portion of the grinding wheel 1 is not intensively worn, thereby improving the grinding efficiency. I have.

Note that the order in which the ground surface of the cutter blade 2 is ground on the ground surface of the grinding wheel 1 is not necessarily limited to the above-described order, and may vary depending on the type and shape of the cutter blade 2. In addition, since the flank side 2b and the rake face 2c of the cutter blade 2 are merely flat as described above, the so-called plunge grinding method in which the grinding wheels 1b, 1c, and 1d are pressed in the surface direction and ground is used. Is also possible.

[0039]

1 to 5 show an embodiment of a first cutter blade grinder according to the present invention. FIG. 1 is an overall schematic front view, and FIG. 2 is an overall schematic plan view. is there.

4 is a horizontal bed, 5 is a grinding wheel stand,
Reference numeral 6 denotes a work table, and the grindstone table 5 and the work table 6 can be moved on the bed 4.

The grinding wheel platform 5 can be moved to the cutter blade 2 side, that is, vertically moved in the Y-axis direction by a moving mechanism using a feed screw (not shown) rotated by a motor. On the other hand, the work table 6 can also be moved laterally in the X-axis direction perpendicular to the Y-axis direction by a moving mechanism using a feed screw (not shown) rotated by a motor.

A rotating shaft holding portion 7 is provided on one side of the grinding wheel base 5. The rotation holding portion 7 is moved by a moving mechanism of a feed screw (not shown) rotated by a motor. In the vertical direction, that is, in the Z-axis direction.

The rotating shaft holding portion 7 has a rotating shaft 3 which is rotated by a motor 8 around a vertical center line which is the same as the Z-axis direction.
The grinding wheel 1 is mounted near the lower part of the rotating shaft 3 as described later.

On the other hand, a work holding section 9 is provided on the work table 6 so as to be able to hold a portion of the cutter blade 2 near the base. The fork holding portion 9 is rotatable around its center line, that is, the C axis by a motor (not shown) so that the ground surface of the cutter blade 2 corresponds to the ground surface of the grinding wheel 1. 2 is rotatable about a B axis perpendicular to the C axis and parallel to the X axis.

The above-mentioned rotation for grinding the grinding wheel 1, the movement of the rotating shaft holder 7 in the Z-axis direction, the vertical movement of the grinding wheel stand 5 in the Y-axis direction, and the lateral movement of the work table 6 in the X-axis direction. , The rotation of the work holding section 9 around the C axis and the B axis
This is controlled by

The grinding wheel 1 is mounted on the rotary shaft 3. The grinding wheel 1 is composed of a first grinding wheel 1a, a second grinding wheel 1b, and a third grinding wheel 1c. Figure 3
As shown in FIGS. 4 and 5, here, they are arranged in order from below the rotating shaft 3 upward.

First, the lower first grinding wheel 1a grinds the cutting edge side surface 2a of the cutter blade 2, but since the cutting edge side surface 2a differs depending on the type of the gear to be processed,
The first grinding wheel 1a itself is made of a material that can be easily shaped, and is made of ceramic here. The shape of the first grinding wheel 1a is adjusted by a dresser 10 provided on the work table 6.

The second grinding wheel 1b at the middle stage grinds the flank 2b of the cutter blade 2 and is made of a material with little wear. Here, a material having CBN abrasive particles adhered to the surface is used. . Since the flank side surface 2b does not necessarily have to have a good surface roughness, the second grinding wheel 1b is also a corresponding abrasive grain, and since the flank side surface 2b is a simple flat surface, the ground surface thereof also corresponds thereto. It has a planar shape.

The upper third grinding wheel 1c is for grinding the rake face 2c of the cutter blade 2 and is made of a material having little wear. Here, the surface of which the surface is coated with abrasive grains of CBN is used. . The rake face 2c is made of abrasive grains corresponding to the need to improve the surface roughness, and since the rake face 2c is also a simple plane, the ground surface is a plane corresponding to it. The above second grinding wheel 1
It has the same shape as b.

FIGS. 6 to 8 show a grinding wheel 1 in an embodiment of the second cutter blade grinder according to the present invention. It is the same as the first embodiment of the invention except that the configuration of the grinding wheel 1 is different.

That is, the grinding wheel 1 here comprises a first grinding wheel 1a for grinding the cutting edge side surface 2a of the cutter blade 2,
Second grinding for both flank 2b and rake face 2c
The grinding wheel 1d is mounted on the rotating shaft 3 in order from the lower side to the upper side as shown in FIGS.

Here, the lower first grinding wheel 1a has a cutter blade 2 and a cutting edge side surface 2 similar to the first wheel of the invention.
Since a varies depending on the type of the gear to be processed, the first grinding wheel 1a itself is made of a material whose shape can be easily formed, and here is made of ceramic. The shape of the first grinding wheel 1 a is also adjusted by the dresser 10 provided on the work table 6.

Since the upper second grinding wheel 1d is also used for grinding both the flank 2c and the rake face 2c of the cutter blade 2, it is made of a material having little wear. Here, diamond abrasive grains are used on the surface. The thing which stuck is used. Also, since the flank 2b of the cutter blade 2 has a simple flat surface 2c, the ground surface of the second grinding wheel 1d has a corresponding flat surface.

The second grinding wheel 1d does not need to be shaped by the dresser 10, but is merely dressed to regain sharpness. The flank 2b of the cutter blade 2 does not necessarily have to have a good surface roughness, but the rake face 2c needs to have a good surface roughness. Therefore, the abrasive grains of the second grinding wheel 1d are raked here. It corresponds to the surface 2c.

When the cutting blade for the spiral bevel gear is reground using the first or second cutter blade grinding machine of the present invention, the grinding time is reduced and the number of times the dresser is used is reduced. As a result, the grinding efficiency is improved about three times as compared with the conventional case, the cost is correspondingly reduced, and the grinding accuracy can be improved.

[0056]

As is apparent from the above, according to the cutter blade grinder according to the present invention, unlike the conventional one,
The grinding efficiency of the cutter blade can be greatly improved, the cost required for grinding can be reduced, and the grinding accuracy can be made high and stable.

That is, the conventional cutter blade grinder generally has a single grinding wheel made of ceramic, and changes the posture of the cutter blade in contact with the cross-sectional convex portion of the outer peripheral portion to perform grinding. Things. Therefore, it is necessary to reduce the grinding amount and repeat the grinding many times, and it takes a lot of grinding time, and the grinding wheel wear and damage is fast, and it is necessary to constantly tru the cutter blade, and the grinding efficiency is not high. .

In other grinding machines, the mechanism for moving the cutter blade is complicated and large for grinding the cutting edge side surface, flank side surface, and rake surface of the cutter blade, so that there is a problem in accuracy and cost. At the same time, the feed rate could not be increased due to the large weight, and the grinding time was also long. In addition, since grinding is performed only at the corners of the grinding wheel in principle, the wear of a specific portion of the grinding wheel is fast and the grinding accuracy is reduced.

On the other hand, in the cutter blade grinding machine according to the present invention, the grinding wheel side can be moved in the direction of the axis thereof, and the cutting wheel side faces the first grinding wheel for grinding. The flank side comprises a second grinding wheel for grinding and the rake face is composed of three grinding wheels, or the first side wheel for grinding the cutting edge side, and the flank side and rake face grinding. And a second grinding wheel, which is arranged side by side on the same rotating shaft.

Therefore, in the cutter blade grinding machine of the present invention, prior to grinding, the cutter blade is set so that the surface to be ground is at an angle and position corresponding to the grinding surface of the grinding wheel. It is only necessary to slightly move in the Z-axis direction for positioning, depending on whether or not to use. After that, by the vertical movement of the grinding wheel side and the horizontal movement of the cutter blade side, the rotating predetermined grinding wheel performs grinding,
With a simple configuration, the movement is very small, workability is improved, and grinding accuracy is high and a stable state can be achieved.

In the first aspect of the present invention, the grinding wheel itself of the grinding machine according to the present invention is also made of a material which can be easily formed in shape so as to grind the cutting blade side surface of the cutter blade. The second grinding wheel is made of a material having abrasive grains with little wear on the surface, and the third grinding wheel is made of a material having little wear for grinding the rake face.

Thus, each of the three or two grinding wheels can sufficiently perform their respective functions and can be ground, so that specific portions are not worn away intensively, and the trouble of frequently performing truing dressing is eliminated. In addition, the grinding efficiency can be improved.

Further, in the second embodiment of the present invention, since both the flank side and the rake side of the cutter blade are ground by one of the second grinding wheels, the structure becomes simpler. Lighter weight, higher precision, and cost reduction can be achieved, and the grinding efficiency can be improved.

[0064]

[Brief description of the drawings]

FIG. 1 is an overall schematic front view showing an embodiment of a cutter blade grinding machine according to the present invention.

FIG. 2 is an overall schematic front view showing an embodiment of the cutter blade grinding machine shown in FIG.

FIG. 3 is a partially cutaway enlarged front view showing a positional relationship when a cutting edge side surface of a cutter blade is ground by a first grinding wheel according to the first aspect of the present invention.

FIG. 4 is a partially cut-away enlarged front view showing a positional relationship when a flank side of a cutter blade is ground by a second grinding wheel according to the first embodiment of the present invention.

FIG. 5 is a partially cutaway enlarged front view showing a positional relationship when a rake face of a cutter blade is ground by a third grinding wheel according to the first aspect of the present invention.

FIG. 6 is a partially cutaway enlarged front view showing a positional relationship when a cutting edge side surface of a cutter blade is ground by a first grinding wheel according to a second embodiment of the present invention.

FIG. 7 is a partially cutaway enlarged front view showing a positional relationship when a flank side of a cutter blade is ground by a second grinding wheel according to the second embodiment of the present invention.

FIG. 8 is a partially cutaway enlarged front view showing a positional relationship when a rake face of a cutter blade is ground by a second grinding wheel according to the second embodiment of the present invention.

FIG. 9 is a partially cutaway enlarged front view showing a positional relationship when a cutting blade side surface of a cutter blade is ground by a grinding wheel of a conventional grinding machine.

FIG. 10 is an enlarged front view, partially cut away, showing a positional relationship when grinding the flank side of the cutter blade with the grinding wheel shown in FIG. 9;

11 is a partially cutaway enlarged front view showing a positional relationship when a rake face of a cutter blade is ground by the grinding wheel shown in FIG. 9;

FIG. 12 is a partially cut-away enlarged front view showing a positional relationship when a cutting edge side surface of a cutter blade is ground by a grinding wheel of another conventional grinding machine.

13 is a partially cutaway enlarged front view showing a positional relationship at the time of grinding the tip end portion of a cutting blade of a cutter blade with the grinding wheel shown in FIG.

[Explanation of symbols]

 A-grinding machine 1-grinding wheel 1a-first grinding wheel 1b-second grinding wheel 1c-third grinding wheel 1d-second grinding wheel 2-cutter blade 2a-cutting side surface 2b-flank side 2c-rake surface 3 -Rotating axis 4-Bed 5-Wheel wheel base 6-Work table 7-Wheel wheel holding unit 8-Motor 9-Work holding unit 10-Dresser

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tetsuo Tatsuno 4-1402-1 Higashiikejiri, Sayama City, Osaka Prefecture 1 Inside Asano Gear Works (72) Inventor Junji Hiramatsu 138 Nishibuchima, Daikoji Temple, Chita City, Aichi Prefecture 77 F-term in Kanehira Co., Ltd. (reference) 3C058 AA04 AA09 AA18 AB01 AB06 CA01 3C063 AA02 AB05 BA02 BB02 BG07 BH30 EE04 EE29 FF08

Claims (2)

[Claims] A mechanism for vertically moving a grinding wheel 1 side to a cutter blade side in a Y-axis direction so that a grinding surface of a cutter blade 2 can be ground by a grinding surface of a rotating grinding wheel 1; And a mechanism for laterally moving the cutter blade 2 side in the X-axis direction perpendicular to the Y-axis,
A mechanism enabling rotation about an axis, and a cutter blade 2
In a grinding machine A for a cutter blade provided with a mechanism capable of rotating about a B-axis which is at right angles to the C-axis and parallel to the X-axis, the grinding wheel 1 side moves in the Z-axis direction parallel to the rotation axis 3 thereof. In addition to providing a mechanism that enables up and down movement, the grinding wheel 1 is made of a material that is easy to shape, a first grinding wheel 1a that grinds the cutting edge side surface 2a of the cutter blade 2, and an abrasive grain whose surface has little wear. A grinding wheel 1b for grinding the flank 2b opposite to the cutting edge side of the cutter blade 2, and a rake face of the cutter blade 2 whose surface is made of a material having less abrasive grains. The first, second, and third three grinding wheels 1a, 1b, 1c are constituted by a third grinding wheel 1c for grinding 2c.
Is mounted on the same rotary shaft 3. 2. A mechanism for vertically moving the grinding wheel 1 side to the cutter blade side in the Y-axis direction so that the surface to be ground of the cutter blade 2 can be ground by the grinding surface of the rotating grinding wheel 1; And a mechanism for laterally moving the cutter blade 2 side in the X-axis direction perpendicular to the Y-axis,
A mechanism enabling rotation about an axis, and a cutter blade 2
In a grinding machine A for a cutter blade provided with a mechanism capable of rotating about a B-axis which is at right angles to the C-axis and parallel to the X-axis, the grinding wheel 1 side moves in the Z-axis direction parallel to the rotation axis 3 thereof. In addition to providing a mechanism that allows vertical movement, the grinding wheel 1 is made of a material that is easy to shape, a first grinding wheel 1a that grinds the cutting edge side surface 2a of the cutter blade 2, and an abrasive grain whose surface has little wear. And a second grinding wheel 1d for grinding the rake face 2c opposite to the cutting edge side face of the cutter blade 2, and the first and second two pieces. A grinding machine for cutter blades, in which grinding wheels 1a and 1d are mounted on the same rotating shaft 3.