JPS60114467A - Grinding wheel - Google Patents

Abstract

PURPOSE:To improve the cutting accuracy and to reduce the size and weight by providing a plurality of grinding wheel rings integrally in parallel with predetermined interval on the surface of metal tube while forming an abrasive grain layer on the surface of grinding wheel table thereby eliminating assembling work requiring skill and time. CONSTITUTION:Four grinding wheel tables 8 are formed in parallel with predetermined interval through mechanical working on a tubular member 7 made of stainless steel, then the portion except said table 8 is coated with acid-proof, alkali-resistant resist and washed with acid then water thereafter galvanization is performed to repeat acid and water washing to perform co-deposition galvanization of diamond abrasive grain and nickel. Co-deposition galvanization is performed again under different condition then galvanization resist is removed to produce a grinding wheel formed with abrasive grain layer produced through co- deposition of diamond and nickel on the surface of said table 8. Consequently, grinding wheel having high parallelism and high accuracy of pitch while reduced weight and size where the grinding wheel table is reusable can be produced with low cost and high productionability.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] The present invention relates to a grinding wheel for machining a plurality of parallel grooves or cutting a hard brittle material such as ferrite, ceramics, or crystal into a plurality of pieces. A conventional grindstone of this type will be explained with reference to FIG. 1 is a rotating shaft, 2 is a boss fixed to the rotating shaft 1 with a screw 3, 4 is a ring-shaped flat grindstone, 5 is a spacer, 6 is a tightening nut, and the grindstone 4 is a sintered grindstone or a resin bond grindstone. , electrodeposited grindstone, etc. are used.

By the way, in the conventional grinding wheel described above, in order to maintain the parallelism and spacing between grooves or the accuracy of the thickness of the cut workpiece when machining multiple grooves or cutting multiple pieces, the grindstone is High precision is required for the assembly of 4. However, 7. It is extremely difficult to assemble the grindstones 4 using the spacer 5 with high accuracy in parallelism and spacing, and the assembly process requires skill and time. The object of the present invention is to provide a grinding wheel that does not have such drawbacks.

[Structure of the Invention] The grinding wheel of the present invention includes a plurality of flat ring-shaped grindstone heads formed integrally with the cylindrical body in parallel at predetermined intervals on the surface of a metal cylindrical body. It is characterized by a whetstone layer formed on the surface of the whetstone head. In FIG. 2, 7 is a metal cylindrical body, 8 is a plurality of flat ring-shaped whetstone heads formed integrally with the cylindrical body at predetermined intervals in parallel with the surface thereof, and 9 is the surface of the whetstone head 8. This is the whetstone layer formed in

[Example] Cylindrical body 7 made of stainless steel with a diameter of 35 m
Four grindstone heads 8 each having a thickness of 0.15 m and a height of 5 W+ were formed by machining at intervals of 10 dews as shown in FIG. 2(a). Acid-resistant and alkali-resistant resist was applied to the other parts except for the grindstone head 8, and after electrolytic degreasing, washing with water, and washing with pickling water, base brushing was performed under the following bath composition and conditions. , bath composition (nickel chloride 2402/
l, hydrochloric acid 120 f/l), conditions (PH0.5-1
0, temperature 30-40°C, current density 3-5 A%4+',
After washing with water, pickling, and washing with water, eutectoid plating of diamond abrasive grains and Nira'kel was performed under the following bath composition and conditions.

Bath composition (nickel chloride 30 r7z, sodium hypophosphite 10 f/l, sodium citrate 100 f/l, ammonium chloride 502μ, diamond powder #8001
~2t/l), conditions (PHq, o, temperature 85~
(90° C., 60 minutes) Furthermore, eutectoid plating of diamond abrasive grains and nickel was performed in an electrolytic nickel plating bath and under the conditions shown below. Bath composition (nickel sulfamate 340-540
r/l, nickel chloride 1 o t7t, boric acid 30
? /l, diamond powder #8001-10
f/l, glycerin 340f/l), conditions (PH2
~4, temperature 45~55℃, current density 1~3V〆, time 1
0 minutes) Finally, when the metsukirecyst is removed with a solvent, the second
As shown in Figure (b), the grinding wheel of the present invention is replaced, in which a grinding wheel layer 9 formed by eutectoid plating of diamond and nickel is formed on the surface of a grinding wheel head 8. In the above examples, diamond is used for the abrasive grains and nickel is used for the plating, but in addition to these, it is also possible to use cubic densified boron for the abrasive grains, copper, tin, etc. for the plating. .

[Effects of the Invention] Since the present invention has the above configuration, it has the following effects. (1) Since the whetstone head 8 is formed integrally with the cylindrical body 7, the rigidity is high, the blade can be made thin, and the parallelism of the whetstone and the precision of the pitch interval are high. (2) Since the cylindrical body 7 and the whetstone head 8 can be reused when the whetstone layer 9 is worn out, the cost of the whetstone can be reduced. (3) The productivity of the "/c" grindstone is improved since it does not require assembly work like the conventional grindstone shown in FIG.

(4) It has higher precision than the conventional assembled grindstone shown in FIG. 1, and can be made lighter and smaller.

[Brief explanation of drawings]

Figure 1: Side view of a conventional whetstone Figure 2: A side view of the whetstone of the present invention, (a) is before the whetstone layer is formed, (b) is after the whetstone layer is formed 1... rotating shaft, 2...・Boss, 3... Screw, 4...
・Flat grindstone, 5... Spacer, 6... Nut, 7.
- Cylindrical body, 8 - Grinding wheel head, 9... Grinding wheel layer 5- Fig. 1, Fig. 2, Z)

Claims (2)

[Claims] (1) A plurality of flat ring-shaped whetstone heads are formed integrally with the cylindrical body in parallel at predetermined intervals on the surface of a metal cylindrical body, and a whetstone layer is formed on the surface of the core whetstone head. Grinding wheel featuring (2) The whetstone layer is formed by eutectoiding abrasive grains such as diamond or cubic boron nitride in a plating solution made of a metal salt such as nickel or copper. (1) Grinding wheel