JPH05277951A - Manufacture of diamond roll for correcting grinding wheel - Google Patents

Abstract

PURPOSE:To manufacture a diamond roll for correcting a grinding wheel wherein distribution of diamond grains is uniformalized and forms desired arrangement. CONSTITUTION:The annular recessed part 4 of a mold member 3 on which a base part A is placed is filled with a bond material C and diamond grains B. In filling, the diamond grains are fitted in small holes 7 formed in a properly arranged and distributed state in a plate member 6 for arrangement of diamond grains placed in the annular recessed part, the diamond grains being positioned therein. Thereafter, the bond material and the diamond grains are powder- molded and integrally sintered togetherwith a base part. This method brings diamond grains into a desired distribution state through proper selection of distribution arrangement and the size of small holes in the plate member for arrangement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a diamond roll for whetstone correction.

[0002]

2. Description of the Related Art In a conventional method for manufacturing a diamond roll for modifying a grinding stone (truing or dressing), an annular recess 4 formed by a mold member 3 and a base portion A of the diamond roll 4 as shown in FIG. In the illustrated example, a ring-shaped recess having a quadrangular cross section is filled with a mixed powder of diamond grains B and a bonding material C, and is pressed and compressed by a pressing member 5 corresponding to the ring-shaped recess 4 to form a diamond portion D. Powder molding. The diamond part D is fired together with the base part A to be integrated, and the diamond part D is further shaped to manufacture a diamond roll for grinding wheel correction.

[0003]

In the conventional method for producing a diamond roll for whetstone correction, since the distribution of the diamond grains A in the powder compact is random and not uniform, the resulting diamond roll is used. When truing or dressing a grindstone, the following problems occur.

(1) The grinding resistance is not stable. Therefore, grinding burn, grinding crack, and the like are unstable. (2) The dressing interval is not stable. (3) The quality of the ground surface is poor. An object of the present invention is to manufacture a diamond roll for whetstone correction in which the distribution of diamond grains A is uniform.

[0005]

According to the method for producing a diamond roll for whetstone correction of the present invention, a bonding material and diamond grains are filled in a molding recess of a mold member on which a base portion is placed,
At the time of filling, the diamond grains are positioned by being fitted into the small holes appropriately arranged and distributed in the diamond grain arrangement plate member placed in the forming recess, and thereafter, the bonding material and the diamond grains are powder-formed and the base is formed. The parts are integrally sintered.

[0006]

In the above-described method for manufacturing a diamond roll for whetstone correction, the diamond particles are brought into a desired distribution state by appropriately selecting the distribution arrangement and size of the small holes in the diamond particle arrangement plate member.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for manufacturing a diamond roll for whetstone correction according to an embodiment of the present invention will be described with reference to FIGS. A mold member 3 in which a two-step circular recess having a central recess 1 and a step portion 2 on the inner peripheral surface is formed is prepared. When fitted, an annular recess 4 having a quadrangular cross section is formed in the step portion 2. Furthermore, an annular pressing member 5 and an annular diamond grain arranging plate member 6 that fit into the annular recess 4 are prepared.

The diamond grain arranging plate member 6 is provided with small holes 7, 7 ... Having a uniform and appropriate distribution arrangement as shown in FIG. 2 by photo-etching or the like.
It is a through hole or a blind hole, and has a diameter into which the diamond grain B used in the diamond roll for whetstone correction is just fitted, and is a depth into which one grain or a plurality of diamond grains B is fitted as necessary.

First, the diamond grain arranging plate member 6 is fitted into the annular recess 4 and placed on the step 2, and one or a plurality of diamond grains B are positioned and scattered so as to fit into the respective small holes 7. From this, the bond material C is filled.

Then, with the pressing member 5, the bond material C
Is pressed from above, and the diamond portion D of the whetstone-correcting diamond roll is powder-molded. Furthermore, the base part A
Both are fired in a furnace, and the diamond portion D is integrated with the base portion A while the diamond grains B, the bonding material C, and the diamond grain arranging plate member 6 are integrally sintered. The powder molding / sintering of the diamond portion D may be performed by hot pressing or hot coining.

Further, the diamond part D is formed and processed to manufacture a diamond roll for correcting a whetstone.

In the above process, the diamond grain arranging plate member 6 is first fitted into the annular recess 4 during powder molding, but the bond material C is first filled up to the intermediate depth of the annular recess 4,
The diamond grain arranging plate member 6 is placed thereon, the diamond grains B are positioned and scattered so as to fit into the respective small holes 7, and the annular recess 4 is further filled with the bond material C from above. Any process may be used. Alternatively, the bond material C filled first may be powder-molded or fired.

Diamond grains B are distributed on one side surface in the diamond portion D of the whetstone-correcting diamond roll manufactured in the former step, but in the diamond portion D of the whetstone-correcting diamond roll manufactured in the latter step. The diamond grains B are distributed in the central portion of the thickness.

By appropriately selecting the distribution arrangement and size of the small holes 7 in the diamond grain arranging plate member 6 and by selecting the above-mentioned steps, the diamond roll 7 for correcting a grindstone in which the diamond grains 7 in the diamond portion D are in a uniform and desired distribution state. Can be obtained.

[0015]

According to the manufacturing method of the present invention, it is possible to make the distribution arrangement of the diamond grains in the diamond roll for correcting the grindstone uniform and desired. Therefore, the whetstone trued or dressed by the whetstone-correcting diamond roll can perform stable and normal grinding.

[Brief description of drawings]

FIG. 1 is an explanatory view of a method for manufacturing a diamond roll for whetstone correction in an embodiment of the present invention.

FIG. 2 is a plan view of a diamond grain arranging plate member used in the method for manufacturing the diamond roll for whetstone correction in the embodiment of the present invention.

FIG. 3 is an explanatory view of a method for manufacturing a diamond roll for whetstone correction in the conventional technique.

[Explanation of symbols]

 1 Central recess 2 Step part 3 Type member 4 Annular recess 5 Pressing member 6 Plate member for diamond grain arrangement 7 Small hole A Base portion B Diamond grain C Bond material D Diamond portion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshinori Yotsui 1-1, Asahi-cho, Kariya city, Aichi Toyota Koki Co., Ltd. (72) Inventor Masahiro Ido 1-1-chome, Asahi-cho, Kariya city, Aichi prefecture Toyota Kogyo Inside the machine Co., Ltd. (72) Inventor Suzuki Asahi 7 7 Shiroyama, Maiki-cho, Okazaki-shi, Aichi Prefecture Toyota Banmops Co., Ltd. (72) Inventor Shinji Shibata, 7 Shiroyama, Maiki-cho, Okazaki-shi, Aichi Prefecture 54

Claims (1)

[Claims] 1. A bonding material and diamond grains are filled in a molding recess of a mold member in which a base portion is placed, and when filling the diamond grains, the diamond grains are appropriately applied to a diamond grain array plate member placed in the molding recess. A method of manufacturing a diamond roll for correcting a grindstone, which is fitted and positioned in small holes arranged and distributed, and thereafter, a bond material and diamond grains are powder-formed and the base portion is integrally sintered together.