JP3450085B2 - Diamond dresser - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diamond dresser using diamond grains, and more particularly to a diamond in which octahedron type diamond is used for diamond grains. It is about dressers. [0002] Generally, in the case of a multi-stone dresser, for example, in the case of a multi-stone dresser, a large number of natural diamond grains are arranged at the tip of a shank and fixed (fixed) with a sintered metal. It has been formed.
A so-called forming dresser or the like, which is used for copying dressing, is formed by forming a single stone, large diamond grain, and setting it so that a surface having wear resistance is involved in the dressing operation. As a blade type dresser, for example, Japanese Patent Application Laid-Open
As described in JP-A-185373, there is a configuration in which a large number of columnar diamonds are provided. [0003] By the way, in the above-mentioned conventional one, for example, in the case of a multi-stone dresser using natural diamond grains, it is difficult to determine the crystal orientation of each diamond grain. Is randomly set without checking the crystal orientation. Therefore, in the dresser formed in this way, there are also diamond grains arranged such that the surface having not so high abrasion resistance participates in the dressing operation, and it is difficult to obtain a sufficient life as the dresser. There is a problem. Further, in the case of using a forming dresser or a columnar artificial diamond, there is a problem that the price of the diamond itself increases and the manufacturing cost of the dresser must be increased. In order to solve these problems, among natural diamonds, in particular, octahedron-type diamond grains are used, and the crystal orientation of the diamond grains is selected so that the wear-resistant surface can participate in the dressing operation. SUMMARY OF THE INVENTION It is an object (problem) of the present invention to provide a diamond dresser excellent in abrasion resistance, which is arranged in a diamond. [0004] In order to solve the above problems, the present invention takes the following means. That is, with respect to a diamond dresser having a configuration in which diamond is buried at the tip of the shank, a holding portion comprising a V-groove formed in a direction perpendicular to the axis of the shank is provided at the tip of the shank. An octahedron-type diamond grain is placed on the V-groove of the holding portion so that the (1,1,1) plane fits in the crystal orientation.
And a (1,0,0) plane oriented in the same direction as the axis of the shank, and a bonding material for bonding the diamond grains to the holding portion formed of the V-groove. A metal of Group 4A of the periodic table containing titanium (Ti);
One of a metal belonging to Group 5A of the periodic table including vanadium (V) and a metal belonging to Group 6A of the periodic table including chromium (Cr), and copper (Cu) or silver (Ag). In this case, a configuration is adopted in which the alloy is formed from an alloy of a metal belonging to Group 1B of the periodic table. [0007] By adopting the above configuration, the present invention has the following functions. That is, when octahedron-type diamond particles are placed on the V-groove provided at the tip of the shank, the V-groove becomes
The shape of the diamond grains is set to have an angle of about 110 ° so as to match the plane of the octahedron type diamond grains, that is, the (1,1,1) plane in the crystal orientation. , Will be arranged in order. Moreover, since the V-groove is provided in a direction perpendicular to the axis of the shank, the octahedron-type diamond grains installed on the V-groove are:
The apex portion is set so as to coincide with the axis of the shank. That is, in the crystal orientation, (1,
The (0,0) plane forms a surface that participates in dressing. [0007] Then, this surface extends in the XX direction shown in FIG.
And excellent wear resistance in the Y and Y directions.
You. Therefore, when the dressing operation is performed by the diamond particles arranged in this way, the wear of the diamond particles is reduced, and the continuous dressing operation becomes possible, and the stable dressing is performed. Further, since the diamond grains arranged in this way and the V-grooves are bonded by a binder made of a silver brazing material containing titanium (Ti) or the like, the diamond grains are , Most of the surfaces are bonded onto the V-groove via the bonding material. That is, a titanium carbide layer is formed on the surface of the diamond grain between titanium (Ti) contained in the brazing material forming the binder. Since this titanium carbide layer is formed of a metalloid layer of a semi-metal, the bondability with other metals forming the brazing material is improved. [0009] From the above, the diamond grains and the brazing material forming the bonding material are bonded through the metallizing layer made of the titanium carbide. That is, the wettability of the brazing material made of copper (Cu), silver (Ag), or the like, which is a metal belonging to Group 1B of the periodic table, to the diamond grains is improved, and each diamond grain forms the binder. It is gripped (held) strongly by the brazing material. Therefore, almost all of the diamond particles are bonded on the V-groove by the bonding material, so that even if each diamond particle is worn, it does not fall off on the way, and is engaged in the dressing operation to the end. Will be able to The same applies to the case where vanadium (V) or chromium (Cr) is used instead of titanium (Ti). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A basic embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the configuration of the present embodiment includes a shank 2 made of an iron-based metal, an octahedron type diamond particle 1 disposed in a holding portion 21 formed at a tip end of the shank 2, And a bonding material 5 for bonding the diamond grains 1 to the holding portion 21. In such a basic configuration, a cover 3 made of a metal material may be provided on the diamond grains 1 as shown in FIG. 3, for example, in order to secure the holding of the diamond grains 1. In this case, as shown in FIG. 1, each diamond grain 1 is placed on a holding portion 21 formed at the tip of the shank 2.
After these diamond grains 1 are bonded by a bonding material 5 as shown in FIG. 2, a cover 3 made of a metal material is mounted as shown in FIG. The holding portion 21 is joined with a brazing material or the like. The brazing material is also embedded between the cover 3 and each of the diamond grains 1, whereby the diamond grains 1 are mechanically held. In such a basic configuration, octahedron-type diamond particles are employed as the diamond particles 1. As shown in FIG. 1 and FIG. 2, the octahedron-type diamond grain 1 has all the faces, that is, eight faces in the crystal orientation (1, 1).
1, 1) surface. Therefore, when a plurality of diamond grains 1 are arranged in the holding portion 21 of the shank 2, it is relatively easy to arrange them in the same crystal orientation direction. The diamond grain 1 having such a structure
Is configured as shown in FIGS. 1 and 2. That is, the shank 22 is made of an iron-based metal, and includes a shank 22 held by a dressing machine or the like, and a holding portion 21 formed at the tip of the shank 22. The holding portion 21 is provided with a V-shaped groove 211 for holding the diamond grains 1. Note that this V
As shown in FIG. 2, the groove 211 has a basic sectional shape adjusted to an angle formed by two surfaces of the octahedron type diamond grain 1, that is, two (1,1,1) surfaces. It is set to have an opening angle of about 110 °. A plurality of V-grooves 211 having such a basic cross-sectional shape are provided in parallel in a direction perpendicular to the axis of the shank 2. On the V-groove 211 having such a structure,
The binder 5 for fixing (fixing) the octahedron-type diamond grains 1 has the following configuration. That is, a metal of Group 4A of the periodic table containing titanium (Ti), a metal of Group 5A of the periodic table containing vanadium (V), and a metal of Group 6A containing chromium (Cr).
It is made of an alloy of any one of the metals of Group A and a metal of Group B of Periodic Table 1 containing copper (Cu) and silver (Ag). In addition, in addition to these, tin (Sn) and zinc (Z) which form an alloy with a metal of Group 1B of the periodic table.
n), metal such as iron (Fe) may be added. In such a configuration, a case where the binder 5 is made of, for example, titanium (Ti), copper (Cu), silver (Ag) or the like will be considered. That is, in this case,
First, the metal powder composed of titanium, copper, silver or the like and an organic binder are mixed. Then, the mixture thus formed into a paste, that is, such a mixture is applied onto the V groove 211 of the shank 2 mainly made of a metal such as iron (Fe). The octahedron-type diamond particles 1 are arranged after the paste-like mixture is applied as described above. [0014] In this state, about 84
By firing at a temperature of 0 ° C. to 940 ° C., first, a metallizing layer formed of titanium (Ti) is formed around the diamond grains 1.
That is, a metallizing layer made of titanium carbide (TiC) is formed on the surface of the diamond grain 1. Since the metallizing layer is made of a semi-metallic material, it has a property of being easily fused with a metal such as copper (Cu) or silver (Ag) forming the binder 5. Therefore, each of the above diamond grains 1
Is bonded to the bonding material 5 through a metallizing layer formed on the surface thereof, as shown in FIG. As a result, the binder 5 is attracted all around the diamond grain 1. That is, the bonding material 5 wets around the diamond grains 1 and is completely bonded to the diamond grains 1, and the bonding material 5 itself also forms a strong bonding structure by forming an alloy. . In the firing, the binder 5
In order to prevent the metal material for forming the oxide from forming an oxide, the atmosphere in the furnace for performing the above-described firing step is a state filled with an inert gas such as an argon gas or a vacuum state. You. In such a state, a firing step is performed. The temperature at this time is controlled in the range of 840 ° C. to 940 ° C. This temperature is within a range where a metallizing layer made of titanium carbide (TiC) is formed on the surface of the diamond grain 1 and various metals forming the binder 5 are melted to form an alloy. That is, if the titanium carbide layer (TiC) on the surface of the diamond grain 1 is too deep when heated in a very high temperature state for a long time, the bonding strength with the bonding material 5 may be reduced. Therefore, in order to avoid this, the firing conditions are set within the above temperature range and time. By going through such a firing step,
As shown in FIG. 2, the whole surface of the diamond grain 1 is covered with a wet-up metal binding material 5. As a result, the diamond grains 1 are firmly held (grip) by the binder 5. Also, between the bonding material 5 and the holding portion 21 of the shank 2, since both are made of metal, they form an alloy and are firmly bonded. In the above configuration, the metallizing layer is formed of the titanium carbide (Ti
Instead of C), it may be formed of vanadium carbide (VC) or chrome carbide (CrC). Also in this case, since the metallized layer and the metal of Group 1B of the periodic table including copper (Cu) and silver (Ag) are easily fused, the diamond particles 1
And the bonding material 5 are improved in wettability, and the bonding strength between the two is kept strong. As described above, the V groove 211 of the shank 2
On top, octahedron-type diamond grains 1 are placed via a binder 5, whereby
On the dressing surface of the present diamond dresser, the vertices formed by the four surfaces of the octahedron type diamond grains 1, that is, the (1,1,1) plane, come to come. The dressing surface formed at the apex, that is, the (1,0,0) plane exhibits high wear resistance in the XX direction and the YY direction in FIG. That is, with these configurations, a diamond dresser having excellent wear resistance is formed. In addition,
The diamond grains 1 installed in the diamond dresser having such a configuration may be in a single stone state or a multiple stone state. In addition, in the case of multiple stones, it may be composed of a single layer, or may be composed of multiple layers. Next, the operation and the like of this embodiment having the above configuration will be described. The operation of this embodiment is basically the same as that described in the section of the operation. That is, as shown in FIGS. 1 and 2, in a V-groove 211 provided in a direction perpendicular to the axis of the shank 2,
By installing the octahedron-type diamond grains 1, the diamond grains 1 held at the tip of the present diamond dresser have a portion engaged in the dressing work, which is always excellent in wear resistance, so-called (1, 1).
(0,0) plane. Also, by providing a plurality of the V-grooves 211 in parallel, the octahedron-type diamond grains 1 are sequentially arranged in the V-grooves 211, so that the surface having excellent wear resistance is formed in the axial direction of the shank 2. Thus, a diamond dresser composed of the diamond grains 1 oriented toward is formed (see FIG. 1). In the diamond dresser having such a configuration, the XX direction and the YY direction in FIG. 1 exhibit excellent performance in abrasion resistance. Therefore, by using such a diamond dresser, stable,
In addition, a dressing operation with high accuracy can be performed. The bonding material 5 for bonding between the diamond grains 1 arranged as described above and the V-groove 211 is formed of a silver brazing material containing titanium (Ti) or the like. The space is tightly connected. That is, as shown in FIG. 2, titanium carbide (TiC), vanadium carbide (VC), or chrome carbide (Cr)
C) is formed, and the metallizing layer and copper (Cu) forming the binder 5 are formed.
), Silver (Ag), etc., have the same metallic properties and thus are easily fused. Therefore, the metallizing layer and the binder 5 are strongly bonded. Further, in the bonding material 5 itself, titanium (Ti), copper (Cu) is used.
), An alloy composed of silver (Ag), or an alloy composed of vanadium (V), copper (Cu), silver (Ag), or an alloy composed of chromium (Cr), copper (Cu), silver (Ag), or the like. Is formed, so that a tough and strong bonding material is formed. Therefore, in the present embodiment, a tough binder 5 is formed, and the diamond grains 1 are separated from the shank 2 via the binder 5.
Is firmly held in the V-groove 211 described above. Next, a reference example of the present invention will be described mainly with reference to FIG. This reference example, V grooves 211 that will be placed in the diamond grains 1 oct sludge down type, a point that is a so that provided parallel to the axis of the shank 2. All other points are the same as those of the above-described embodiment, including that the shape of the V-groove 211 is set so that the opening angle is about 110 °. Accordingly, the octahedron type diamond grains 1 installed on the V-groove 211 having such a configuration have two (1,1,1) planes formed on the V-groove 21.
1 will be arranged so as to come into contact with the first surface. As shown in FIG. 4, since the V-groove 211 is provided in parallel with the axis of the shank 2, the diamond grains 1 arranged on the V-groove 211 have two (1,1,2).
1) The ridge line formed by the surface is set so as to face the tip of the shank 2. That is, the surface at the tip of the shank 2 that is involved in the dressing is the (1,1,0) plane. And this (1,1,
The 0) plane, that is, the ridge portion has excellent wear resistance in the YY direction in FIG. The octahedron-type diamond particles 1 arranged in this manner are bonded onto the V-grooves 211 with a bonding material 5 as shown in FIG. In some cases, the cover 3 as shown in FIG. 3 is reinforced. In the present embodiment having such a configuration, as shown in FIG. 4, since excellent wear resistance is exhibited in the YY direction, stable use of such a diamond dresser is achieved. In addition, a dressing operation with high accuracy can be continuously performed. According to the present invention, a diamond dresser having a configuration in which diamond is buried at the tip of a shank is formed at the tip of the shank in a direction perpendicular to the axis of the shank. A holding member comprising a V-shaped groove is provided, an octahedron-type diamond particle is provided on the V-groove of the holding portion, and a bonding material for bonding the diamond particle to the holding portion including the V-groove is further provided.
Any of a metal of Group 4A of the periodic table containing titanium (Ti), a metal of Group 5A of the periodic table containing vanadium (V), and a metal of Group 6A of the periodic table containing chromium (Cr). Since the structure is formed by an alloy of one and a metal of Group 1B of the periodic table including copper (Cu) and silver (Ag), a plurality of octahedron-types are formed. The diamond grains can be set so as to face the same direction in the crystal orientation.
As a result, it is possible to always engage in dressing work with a surface having excellent wear resistance, and it is possible to provide a diamond dresser having excellent wear resistance at low cost. Also, since the diamond grains can be held by a strong bonding material, it is possible to prevent the diamond grains from falling off at an early stage, and to extend the life of the diamond dresser. became. Therefore, by using these diamond dressers, it is possible to perform an accurate and stable dressing operation.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing the overall configuration of the basic contents of the present invention. FIG. 2 is a partial cross-sectional view showing a coupling structure between a diamond grain and a V-groove which form a main part of the present invention. FIG. 3 is a diagram showing an overall configuration of an embodiment according to the present invention. FIG. 4 is an exploded perspective view showing the entire configuration of a reference example according to the present invention. [Description of Signs] 1 diamond grain 2 shank 21 holding portion 211 V groove 22 shank portion 3 cover 5 binding material

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshihisa Nogimori 1-54, Shiroyama, Maki-cho, Okazaki City, Aichi Prefecture Inside Toyoda Banmops Co., Ltd. (72) Noboru Hiraiwa 1, Shiroyama, Maki-machi, Okazaki City, Aichi Prefecture 54 Toyoda Banmops Co., Ltd. (72) Inventor Takayuki Moroto 1-city Shiroyama, Maikicho, Okazaki City, Aichi Prefecture 54 Toyoda Banmops Co., Ltd. (72) Inventor Hajime Fukami 1-1-1, Asahimachi, Kariya City, Aichi Prefecture Toyoda Takumi (56) References JP-A-5-185373 (JP, A) JP-A-62-8788 (JP, A) JP-A-54-74585 (JP, A) JP-A-1-66968 (JP) , U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B24B 53/00-53/12

Claims (1)

(57) [Claims] [Claim 1] Diamond is embedded in the tip of the shank
In the diamond dresser composed of
At the end of the shank, make a straight line with the axis of the shank.
A holding portion comprising a V-groove formed in the direction of the corner is provided;
An octahedron-type diamond is placed on the V-groove of the holding part.
The (1,1,1) plane is oriented in the crystal orientation
And the (1,0,0) plane is the shank
To the same direction as the axis of
Combination for binding the almond grains to the holding portion comprising the V-groove
The material is a metal of Group 4A of the periodic table containing titanium (Ti);
A metal of Group 5A of the Periodic Table including vanadium (V); and
Of metals of Group 6A of the periodic table containing chromium (Cr)
Any one, including copper (Cu) and silver (Ag)
To be formed of an alloy of Group 1B metal of the periodic table
Diamond dress characterized by having a configuration in which
Ssa.