JP3325832B2 - A diamond dresser having dimples scattered on a surface and a method of manufacturing the same. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diamond dresser such as a diamond rotary dresser used for dressing of a grinding wheel or a superabrasive wheel such as CBN (cubic boron nitride) and a method of manufacturing the same.
More specifically, the present invention provides a diamond dresser which adjusts the degree of concentration of diamond abrasive grains, has low grinding resistance, has good sharpness, can perform dressing with high accuracy, and can be manufactured at low cost and easily. It relates to the manufacturing method.

[0002]

2. Description of the Related Art The most commonly used diamond rotary dresser is a diamond rotary dresser.
A rotary dresser in which diamond abrasive grains are embedded and fixed on the outer peripheral surface of the roll, and the shape of the dresser is transferred to the grinding wheel by pressing the grinding wheel while rotating the dresser. Diamond rotary dressers have been widely used because they can significantly reduce dressing time, have high reproducibility of dressing accuracy, are easy to perform high-level automation, and can reduce grinding costs. I have.

[0003] Diamond rotary dressers are classified into sintered diamond rotary dressers and electroformed diamond rotary dressers according to their manufacturing methods. Sintered diamond rotary dresser is made by placing diamond abrasive grains on the outer peripheral surface of the dresser densely by hand and then fixing it with sintered metal.It has excellent durability, but it is difficult to manufacture finely shaped ones. . The electroformed diamond rotary dresser is made by fixing diamond abrasive grains with metal by electroplating, and the temperature in the manufacturing process is lower than that of sintering. Therefore, a product having a fine shape can be manufactured with high precision.

[0004]

In an electroformed diamond rotary dresser, usually, diamond abrasive grains are filled in the inner peripheral surface of a conductive master mold, and the diamond abrasive grains are temporarily fixed to the inner peripheral surface of the master mold by electroplating. After that, excess diamond abrasive grains are removed, and the diamond abrasive grains are fixed by electroforming by electroplating. Therefore, the diamond abrasive grains are tightly fixed and the degree of concentration becomes extremely high.When the spacing between the abrasive grains is small, it is difficult to cut into the grinding wheel, and the abrasive grains on the surface of the grinding stone are flat with few cutting edges. As a result, there is a problem that the grinding resistance is increased.

In order to adjust the degree of concentration of the diamond abrasive grains of the diamond dresser and improve the performance, Japanese Patent Publication No. Sho 62
In JP-A-47669, a glass ball, a metal ball, or the like is planted in advance on a mold wall by hand, and the degree of concentration is adjusted by setting the diamond abrasive grains by the filling method to be smaller by an area occupied by the glass ball or the like. A method has been proposed. In this method, planting glass balls, metal balls, and the like is performed manually by using an adhesive, so it takes a lot of time, and the size of the glass balls, metal balls, and the like is difficult to adjust. Since the above size is required, fine diamond abrasive grains enter gaps between glass spheres and metal balls, leaving areas where diamonds are still densely packed, In addition, there is a problem that it is fixed by electroforming.

Further, in order to reduce dressing resistance during dressing, a plurality of spiral grooves are formed on the surface of the diamond tool so as to be present at least one at every circumferential position on the roll base. Has been proposed in Japanese Patent Publication No. 53-11112. However, in this method, since the groove has an angle with the roll axis, a dressing force is generated in the axial direction of the rotary dresser at the time of dressing, and the dressing force fluctuates each time a plurality of grooves pass, resulting in vibration. There is a problem that it is easy to occur and sometimes chatter occurs on the ground surface.

Accordingly, an object of the present invention is to provide a diamond dresser manufactured by a method of fixing diamond abrasive grains by a plating layer, in which the degree of concentration of diamond is adjusted, dimples are formed on the surface, and cuts are formed in the grinding wheel. An object of the present invention is to provide a diamond dresser which can be easily maintained with high accuracy for a long period of time and a method of manufacturing the same.

[0008]

In order to solve the above-mentioned problems, the present invention provides a method in which a gel-like adhesive is spotted on a conductive matrix peripheral wall to form a projection, and diamond abrasive grains are formed on the matrix peripheral wall. Is temporarily fixed by electroplating, and further, diamond abrasive grains are fixed by a plating layer, and the diamond mold is formed by removing the mother die. The diamond dresser has dimples scattered on the surface.

[0009]

The present invention comprises a step of forming a projection by spotting a gel-like adhesive on a peripheral wall of a conductive matrix, a step of arranging diamond abrasive grains on the peripheral wall of the matrix by a filling method, and an electroplating process. A step of temporarily fixing diamond abrasive grains to the surrounding wall of the matrix, a step of removing excess diamond abrasive grains that are not temporarily fixed, and a step of removing diamond abrasive grains by plating until the dies and mond abrasive grains are completely covered. And a step of injecting a molten alloy between the core metal inserted into the center of the matrix and a step of removing the matrix.

The present invention also provides a method of manufacturing a diamond dresser, wherein the matrix is a ring shape, and the peripheral wall is an inner peripheral wall, and the diamond dresser obtained is a diamond rotary dresser. . Further, the gel adhesive may be a non-conductive gel adhesive, and the viscosity of the gel adhesive may be 5 or less.
It is preferably not more than 00,000 cp (centipoise).

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION In a diamond dresser of the present invention, a projection is formed by spotting a gel-like adhesive on a peripheral wall of a conductive matrix, and diamond abrasive grains are temporarily fixed to the peripheral wall of the matrix by electroplating. , Further formed by fixing diamond abrasive grains by a plating layer and removing the matrix.
Diamond dresser with dimples scattered on the surface.Easy adjustment of the concentration of diamond abrasive grains useful for dressing when dressing the grinding wheel. In addition, since coolant is supplied to the dimples, sharpness can be maintained for a long time, and dressing can be performed with high precision. Further, by forming a diamond dresser having no diamond abrasive grains in the dimple portion formed on the surface, the diamond abrasive grains in that part can be saved. Although the diamond dresser of the present invention may be of a flat block shape, it is often configured as a most commonly used ring-shaped rotary dresser. The size, density and arrangement of the dimples can be easily and arbitrarily adjusted.

[0013] The method for producing a diamond dresser of the present invention comprises a step of forming a projection by spotting a gel-like adhesive on the conductive master mold peripheral wall, and filling the master mold peripheral wall with diamond abrasive grains by a filling method. Placing diamond abrasive grains on the peripheral wall of the matrix by electroplating, removing excess diamond abrasive grains that have not been temporarily fixed, and plating until all dies and diamond grains are covered by plating. A step of fixing the diamond abrasive grains covered with a layer, a step of injecting a molten alloy between the core metal inserted into the center of the matrix, and a step of removing the matrix, It is possible to easily and inexpensively manufacture a diamond dresser having dimples scattered on the surface.

Further, by making the gel-like adhesive non-conductive gel-like adhesive, diamond abrasive grains are not temporarily fixed by electroplating on the non-conductive gel-like adhesive, and the part where the diamond abrasive grains exist on the surface is It is possible to easily and inexpensively manufacture a diamond dresser on which a dimple portion having no grains is formed.

The most commonly used diamond rotary dresser can be manufactured by making the matrix into a ring shape and making the peripheral wall an inner peripheral wall. The viscosity of the gel adhesive is 500,000 cp.
The following is preferable for forming a good shape (for example, a hemispherical shape) and for the easiness of the operation.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

First, FIGS. 1 to 6 are drawings for explaining the manufacturing process of the diamond dresser of the present invention, in which only a part of the most common diamond rotary dresser is shown, and the entire cross section is shown. The shape is a well-known cylindrical shape having an appropriate curve according to the outer shape of the grindstone.

In this embodiment, a non-conductive gel adhesive is used as the gel adhesive, and a diamond dresser in which a portion having diamond abrasive grains on its surface and a dimple portion having no diamond abrasive grains is formed. Will be described. First, in FIG.
A non-conductive gel-like adhesive (for example, cyanoacrylate instant adhesive gel type) (2) is metered onto the inner peripheral wall surface of a conductive matrix (1) such as graphite (5).
A certain amount is spotted by the circular nozzle (4). Since the spotted adhesive is in a gel form, it becomes substantially hemispherical as shown in FIG. 1 and solidifies instantaneously to form a projection (3). The shape becomes the shape of the dimple on the surface of the finished diamond dresser. The size depends on the amount of the adhesive to be spotted, and the density depends on the number of spots.
The size can be easily adjusted by selecting the discharge amount of the fixed-rate discharge device (5). In the present embodiment, "ThreeBond 1739 Instant Strong Adhesive Gel Type (Viscosity: 23,000 cp)" manufactured by ThreeBond Co., Ltd. was used as the non-conductive gel adhesive. The non-conductive gel adhesive may be of any other type as long as the purpose of the present invention is so, but it is easy to form a good shape (for example, a hemispherical shape) and to easily perform the work. Therefore, it is preferable that the viscosity is 500,000 cp (centipoise) or less.

Furthermore, the shape of the dimple is not limited to a hemisphere, and the shape can be arbitrarily selected from a triangle, a square, a rhombus and the like as shown in FIG. Also in this case, since the adhesive is in the form of a gel, the shape of the adhesive becomes a triangular pyramid (FIG. 9b) or a quadrangular pyramid (FIG. 9c) or the like having a thin tip, and the trace becomes a dimple. Further, nozzles having those cross-sectional shapes can also be used.

As the metering device (5) for spotting the gel-like adhesive (2) with the nozzle (4), a commercially available product (commonly called a dispenser) can be used. Although it is possible to perform spotting by hand manually in general, the nozzle portion can be automatically spotted at a predetermined position by using a numerical controller. The spotted non-conductive gel adhesive is instantaneously solidified, and a large number of substantially hemispherical projections (3) are formed on the wall surface of the matrix. In this state, when the peripheral wall surface of the matrix (1) is filled with diamond abrasive grains (6), the diamond abrasive grains (6) become spotted projections (3).
Where there is no diamond abrasive grain (6 '), the diamond abrasive grain (6') comes into contact with the surface of the substantially hemispherical spotting projection (3) so that the diamond abrasive grain (6) is in direct contact with the wall surface of the matrix (6). (Fig. 2).

In the state shown in FIG. 2, it is placed in an electroplating bath and electroplated (nickel-plated) to form a plating layer (7) between the diamond abrasive grains (6) and the mold wall (1).
Is formed, and the matrix wall (1) of diamond abrasive grains (6)
(Fig. 3). After the temporary fixation of the diamond abrasive grains (6) is completed, excess diamond abrasive grains (6)
′) Is removed. In this case, since the spotted projections (3) are formed of a non-conductive adhesive, the diamond abrasive grains (6 ′) in contact with only those portions are not fixed. It is easily removed, and almost no diamond abrasive grains are present in a portion corresponding to the dimple portion of the diamond dresser (FIG. 4).

An electroformed layer (8) is formed by nickel electroplating in order to fix the diamond abrasive grains (6) in the plating bath again. This is because the electroformed layer (8) having a sufficient thickness is formed beyond the diameter of the diamond abrasive grains (6) and beyond the spotting projections (3), thereby ensuring the diamond abrasive grains (6). It is fixed (FIG. 5).

In this case, a plating layer for fixing diamond abrasive grains can be formed by electroless plating (chemical plating) instead of electroforming by electroplating. That is, the state shown in FIG. 4 can be immersed in an electroless nickel-phosphorous plating bath for about 180 hours to form a nickel plating layer of about 3 mm, the thickness of which is sufficient to fix diamond abrasive grains. Thickness.

Next, a metal core (9) forming the body of the diamond dresser is inserted into the center of the matrix (1), and a tin alloy or the like is inserted between the metal core (9) and the electroformed layer (8). Molten alloy (1
Pour 0) to form a diamond dresser integral with the metal core (9). Finally, the graphite matrix (1) is removed by cutting and grinding to complete the diamond rotary dresser (A). By removing the matrix (1), the spotting projection (3) adhered and fixed to the wall of the matrix is also removed at the same time, so that the trace is automatically formed as a dimple (12) on the surface of the dresser. (FIG. 6). The width W, pitch P, and depth H of the dimple can be easily adjusted by adjusting the formation of the spotting projection.

The surface of the diamond rotary dresser thus manufactured is as shown in FIG. 7. The surface on which the diamond abrasive grains (6) are arranged and fixed and the dimples (12) are appropriately arranged. . FIG. 8 is a sectional view taken along the line II in FIG. 7, and it can be seen that diamond abrasive grains are hardly fixed to the dimple (12). Since the dimple (12) to which the diamond abrasive grains are not fixed is formed, the diamond abrasive grains can be saved.

The size (W) of the dimple is 3 to 20 times the average diameter of the diamond abrasive grains, and the depth (H) is about 0.1 to 5 times the diameter of the dimple. Thermal damage and wear due to frictional heat, which is a major cause of diamond wear, because coolant is contained in dimples and contributes to cooling of frictional heat of diamond abrasive grains during dressing. Is prevented and the life of the diamond dresser is extended.

Since the effect seems to be influenced by the area occupied by the dimples on the surface of the diamond dresser, the following experiment was conducted to confirm those effects. First, according to the first embodiment of the present invention, a diamond rotary dresser (outer diameter φ80 mm × width 15 mm)
Was manufactured by changing the occupied area ratio η of the dimple.

That is, a non-conductive instant adhesive "ThreeBond 1739 (viscosity: 23,000 cp)" was applied to the inner peripheral surface of the conductive graphite matrix by an automatic precision dispenser (quantitative discharge device) with a tip inner diameter of 0.42 m.
Then, the pressure and the discharge time of the dispenser were set such that the hemispherical spot diameter of the cured adhesive was 1.5 mm, and the spotting density was changed. After the adhesive is completely cured at room temperature, the matrix is set on a jig for filling diamond abrasive grains, and the inner peripheral wall surface of the matrix where the adhesive projections are scattered is filled with 25 to 30 mesh diamond abrasive grains. 0.1 ~ 0.15A / d set in temporary electrodeposition plating tank
The diamond abrasive grains were temporarily fixed at a current density of m ² .

After the temporary fixation, excess diamond abrasive grains were removed, set in this electrodeposition plating tank, and an electrodeposition layer was formed by nickel electroplating at 2 A / dm ² for 90 hours to fix the diamond abrasive grains. Then iron (S45C) in the center of the matrix
And a low-melting alloy containing tin was poured into the gap between the nickel plating layer and the iron core and fixed. Thereafter, the entire master block is set on a lathe, and the master block is rotated while the master block is being cut until about 1 mm remains. Then, a grindstone (WA stick) is pressed against the surface of the rotating master block to eliminate the master block portion. Ground. At that time, the protrusions of the adhesive were also completely removed. The above operation is performed by setting the spotting density of the dimple-forming projection to 4, 16, 26, 3
Five kinds of diamond rotary dressers (I to V) were manufactured at 6, 46 pieces / cm ² . As Comparative Example 1, a similar diamond rotary dresser without dimples was produced in the same manner without only the above-mentioned adhesive spotting step. Their specifications are as shown in Table 1.

Then, a grinding test and an abrasion test were performed using these diamond rotary dressers. That is, in the grinding test, dressing of the ceramic grindstone using the diamond rotary dresser,
Grinding was performed with the grinding wheel under predetermined grinding conditions, and the normal grinding resistance at that time was measured. The dressing conditions and grinding conditions are as follows. Grinding machine: Cylindrical grinding machine Grinding wheel: MPD120L8V (φ405 mm × 10 mm width) Coolant: Water-soluble Soluble 70 times diluent Grinding wheel peripheral speed: 50 m / s Dresser peripheral speed: 14.7 m / s (down dress) Dresser cutting speed: φ2 .4 mm / min (dress-out 2 sec) Dress amount: φ40 μm Workpiece: SUJ (HE) (φ60 mm × 15 mm width) Workpiece peripheral speed: 50 m / min (up cut) Grinding wheel cutting speed: φ3.6 mm / min Φ0.2 mm The results are as shown in Table 1 and FIG.

Next, in the wear test of these diamond rotary dressers, after dressing was performed under the following dressing conditions, the outer diameter of the diamond rotary dresser was measured to measure the amount of wear. The results are as shown in Table 1 and FIG. Grinding machine: Cylindrical grinder Grinding wheel: A54M7V (φ405 mm × 30 mm width) Grinding wheel peripheral speed: 30 m / s Dresser peripheral speed: 4.2 m / s (down dress) Dresser cutting speed: φ0.4 mm / min Grinding wheel dressing removal amount; 5000 cm ³ / cm coolant; water-soluble coolant

In Table 1, the dimple area ratio η is calculated from the density of the adhesive projections, and Comparative Example 1 is indicated as the dimple area ratio η 0%.

[Table 1]

FIGS. 11 and 12 are prepared based on Table 1. As is clear from FIGS. 11 and 12, the effect of reducing the grinding resistance is already apparent at the dimple area ratio η of 7%. It can be seen that, as the area ratio increases, the grinding resistance decreases, but on the other hand, the amount of abrasion of the diamond abrasive grains sharply increases around the point where the dimple area ratio η exceeds 70%. This is because, when the area ratio η of dimples on the surface of the diamond dresser increases, the number of effective diamond abrasive grains decreases, the sharpness during dressing and the sharpness of the dressed grindstone improve, and the cooling effect of the diamond abrasive grains increases. Is higher, but the number of diamond abrasive grains is decreased, so that the dressing load per diamond abrasive grain increases, and wear due to friction increases. Therefore, considering them, effectively, the dimple area ratio η on the surface of the diamond dresser
Means that about 7 to 70% is good.

The shape and arrangement of the dimple (12) may be any shape such as a triangular pyramid as shown in FIG. 9b, a quadrangular pyramid as shown in FIG. 9c, and a rhombus as shown in FIG. 9d, in addition to a substantially hemispherical shape (FIG. 9a). And its size and arrangement can be arbitrarily selected.

FIG. 9A shows an example in which the area ratio of the dimples can be increased by concentrating a plurality of adhesive spots, and the capacity for accommodating, discharging and cooling the dressing crushed debris and the coolant can be increased. 9b and 9c
By making the dimple shape triangular pyramid and quadrangular pyramid, the shape of each area where diamond abrasive grains are distributed is also triangular and square, and by aligning the corner tip direction with the rotation direction of the diamond rotary dresser The dressing of the diamond rotary dresser into the grindstone at the time of dressing is facilitated, and furthermore, the dimple portion is securely arranged downstream of the diamond abrasive grain region, so that the dressing crushed debris can be discharged appropriately. Therefore, a reduction in the grinding resistance in the grinding operation by the dressing resistance and the grinding wheel dressed by the diamond dresser is achieved. FIG. 9D shows that the distribution area of the diamond abrasive grains covers the surface of the diamond rotary dresser in a mesh pattern, so that even if the dimple area ratio is relatively high,
9B and 9C, the surface of the grindstone can be dressed more smoothly, and the surface roughness of the workpiece can be expected to be improved in the grinding using the grindstone.

As a second embodiment, instead of the non-conductive gel adhesive, a conductive gel adhesive, for example, “ThreeBond 3300 series conductive resin material adhesive” manufactured by ThreeBond, or the non-conductive adhesive In the case where silver powder or the like is mixed in the agent, when diamond abrasive grains are temporarily fixed in FIG. 3, the diamond abrasive grains (6) are also formed on the projections (3) formed by the conductive gel adhesive.
′) Are temporarily fixed, and the surface of the resulting diamond dresser has a single row of diamond abrasive grains (6, 6) including dimples (12) as shown in FIG. ') Are arranged. According to these manufacturing methods, dimples can be easily formed on the surface of the diamond dresser, and by using a diamond dresser with dimples scattered on the surface, storage and discharge of debris during dressing of the grindstone can be achieved. This facilitates the cooling effect of the coolant and improves the sharpness. Further, since diamond abrasive grains are also present on the surface of the dimple, the shape of the dimple does not change for a long time, and the performance of the diamond dresser can be maintained for a long time.

As a third embodiment, a diamond block dresser having diamond abrasive grains fixed on a flat surface was prepared. It is the same as the first embodiment except that the surface to which the diamond abrasive grains are fixed is flat. That is, the matrix was manufactured in the same process as in the first embodiment using a block-shaped matrix having a flat surface of graphite having conductivity. The dimple portion area ratio η is 28%, the size of the dimple portion is about φ1.5 mm, and the average diamond abrasive grain density is 120 to
The number was 140 / cm ² . For comparison, a diamond block dresser without dimples in the third example was prepared as Comparative Example 2. That is, the same as the third embodiment except that no dimple is present. Since no dimple is present, the average density of diamond abrasive grains is 1
It is 80 to 200 pieces / cm ² .

Using these, a grinding test was performed in the same manner as in the first embodiment. The dressing conditions and grinding conditions are as follows. Grinding machine; Surface grinder Grinding wheel; CBN120L150VBA (φ175 mm × 5 mm width) Coolant: Water-soluble Soluble 70 times diluent Grinding wheel peripheral speed: 33 m / s Dresser feed speed; 750 mm / min Dresser cutting depth: 0.0025 mm / pass × 6 Time (down dress) Workpiece; SUJ (HE) (50 mm length x 3 mm width) Workpiece feed speed: 90 mm / min (up cut) Grinding wheel cutting amount: 0.5 mm / pass x 4 times Removal allowance: 2 mm grinding When the normal grinding resistance was measured, the normal grinding resistance of the grindstone dressed with the diamond block dresser of the third embodiment was 0.33 kgf / mm,
That of the diamond block dresser of Comparative Example 2 was 0.1%.
It was 45 kgf / mm. Therefore, the diamond block dresser having the dimple of the present invention has a normal grinding resistance of about 75% of the conventional product, and the same effect as that of the first example could be confirmed.

[0039]

The diamond dresser of the present invention has a structure in which dimples are scattered on its surface, so that it is possible to easily adjust the concentration of diamond abrasive grains useful for dressing, and to remove grinding dust when dressing a grinding wheel. Is contained in the dimples and is discharged, so that the bite of the diamond abrasive grains is good, and since the coolant is contained in the dimples and cools the diamond abrasive grains, the wear of the diamond abrasive grains can be suppressed and the sharpness can be maintained for a long time. Since the dimples are scattered, no vibration occurs during the dressing operation, and the high-precision dressing operation can be maintained for a long time. A gel adhesive is spotted on the peripheral wall of the conductive matrix to form projections, diamond abrasive grains are temporarily fixed to the peripheral wall of the mold by electroplating, and diamond abrasive grains are further fixed by plating to form the matrix. Dimples are formed on the surface by removing the dimples, and the area ratio, shape, size, and the like of the dimples can be arbitrarily formed. It is more effective if the diamond dresser is a ring-shaped diamond rotary dresser. Further, when the gel adhesive is made of a non-conductive material, as a result, diamond abrasive grains are present only in necessary portions on the surface of the diamond dresser, and there are no abrasive grains in the dimple portions. Since the abrasive grains are saved and the nickel-made dimples are formed, accommodating and discharging of debris during dressing of the grindstone is facilitated, and the sharpness is improved.

According to the method for manufacturing a diamond dresser of the present invention, since the gel-like adhesive is spotted on the peripheral wall of the conductive matrix to form the projection, the operation is easy and the matrix can be removed. Thus, a diamond dresser having dimples automatically formed on the surface can be easily and inexpensively manufactured. Also, when the gel adhesive is spotted on the peripheral wall of the matrix, the shape, size, density, etc. of the dimples of the diamond dresser can be easily adjusted by appropriately selecting the size, discharge amount, location, shape, etc. of the nozzle. In addition, the degree of concentration of diamond abrasive grains can be easily adjusted. Furthermore, the most commonly used diamond rotary dresser can be easily manufactured by making the matrix into a ring shape and making the peripheral wall an inner peripheral wall.

By using a non-conductive gel adhesive as the gel adhesive to be spotted on the peripheral wall of the matrix, when the diamond abrasive grains are temporarily fixed to the peripheral wall of the matrix by electroplating, the diamond is added to the projections. Since the abrasive grains are not fixed and there is no sticking of the diamond abrasive grains to unnecessary parts, the diamond abrasive grains are saved, and when the master mold is finally removed, the projections are removed together with the master mold, Dimples without diamond are automatically formed on the surface of the diamond dresser.

[Brief description of the drawings]

FIG. 1 shows a process of manufacturing a diamond dresser of the present invention.
It is sectional drawing which shows a process.

FIG. 2 shows a process of manufacturing a diamond dresser of the present invention.
It is sectional drawing which shows a process.

FIG. 3 shows a process of manufacturing a diamond dresser of the present invention.
It is sectional drawing which shows a process.

FIG. 4 shows a process of manufacturing a diamond dresser of the present invention.
It is sectional drawing which shows a process.

FIG. 5 shows a process of manufacturing a diamond dresser of the present invention.
It is sectional drawing which shows a process.

FIG. 6 shows a process of manufacturing a diamond dresser of the present invention.
It is sectional drawing which shows a process.

FIG. 7 is a plan view showing the surface of the diamond dresser of the present invention.

FIG. 8 is a sectional view taken along the line II of FIG. 7 showing the surface of the diamond dresser of the present invention.

FIG. 9 is a plan view showing various surfaces of the diamond dresser of the present invention.

FIG. 10 is a sectional view of a surface of a diamond dresser according to another embodiment of the present invention.

FIG. 11 is a relationship diagram showing the influence of the diamond dresser of the embodiment of the present invention on the grinding resistance.

FIG. 12 is a relationship diagram showing a wear amount of the diamond dresser of the example of the present invention.

[Explanation of symbols]

 1. Matrix 2. 2. Gel-like adhesive Protrusions 4. Nozzle 5. 5. Dispensing device 6 Diamond abrasive grains 7. Electroplating 8. Electroformed layer 9. Core 10. Molten alloy layer 12. dimple

Continued on the front page (72) Inventor Masato Kitajima 1-54, Shiroyama, Maiki-cho, Okazaki City, Aichi Prefecture Inside Toyota Banmops Co., Ltd. (72) Inventor Tomoyasu Imai 1-1-1 Asahi-cho, Kariya-shi, Aichi Pref. Inside Toyota Koki Co., Ltd. (56) References Japanese Utility Model 1987-67361 (JP, U) (58) Fields investigated ⁷ , DB name) B24B 53/00 B24B 53/047 B24D 5/00

Claims (5)

(57) [Claims] 1. A gel-like adhesive is spotted on the peripheral wall of a conductive matrix to form a projection, diamond abrasive grains are temporarily fixed to the peripheral wall of the matrix by electroplating, and the diamond abrasive grains are further applied by a plating layer. A diamond dresser characterized by having dimples scattered on a surface formed by fixing and removing a matrix. 2. A step of forming a projection by applying a gel-like adhesive to a peripheral wall of a conductive matrix, forming a diamond abrasive grain on the peripheral wall of the matrix by a filling method, and forming a matrix by electroplating. A step of temporarily fixing diamond abrasive grains to the peripheral wall, a step of removing excess diamond abrasive grains that are not temporarily fixed, and a step of fixing diamond abrasive grains by covering with a plating layer until all diamond abrasive grains are covered by plating, A method of manufacturing a diamond dresser having dimples scattered on a surface, comprising: a step of injecting a molten alloy between a core metal inserted into a center of a matrix and a step of removing the matrix. 3. The method of manufacturing a diamond dresser according to claim 2, wherein the matrix has a ring shape, and the peripheral wall is an inner peripheral wall, so that the obtained diamond dresser is a diamond rotary dresser. 4. The method according to claim 2, wherein the gel adhesive is a non-conductive gel adhesive. 5. The gel adhesive has a viscosity of 50.
The method for producing a diamond dresser according to any one of claims 2 to 4, wherein the method is not more than 000 cp.