JPH0569168U - Auxiliary device for whetstone wear - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a grinding wheel electrodeposition assisting device that is small in size, has sufficient rigidity, and sufficiently functions as an insulator. [Structure] The grinding wheel electrodeposition assisting device 10 has holding members 14a and 14b having insulating films 47 formed on the surfaces thereof in contact with portions other than the portions contacting both end surfaces 12a and 12b of the grinding stone base material 12, respectively. Therefore, the grinding stone base material 12 is attached to the auxiliary device 10
It is possible to prevent the plating layer from depositing other than the grinding surface 18 when immersed in the plating bath together. Further, the metal holding members 14a and 14b are small in size and have sufficient rigidity, and are suitable when the grindstone base material 12 is taken in and out of the plating tank.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention is a grinding wheel for electrodeposition assisting that holds the grinding wheel base material in a state where parts other than the grinding surface are not in contact with the plating solution when electrodepositing abrasive grains on the grinding surface of the metal grinding wheel base material by electroplating. Regarding the device.

[0002]

[Prior art]

 Conventionally, when a cylindrical metal grindstone base material with a grinding surface formed on the outer periphery is immersed in a plating tank and abrasive grains are electrodeposited on the grinding surface, non-conductive parts are applied to the parts other than the grinding surface. An insulator, for example, a vinyl chloride-based grindstone electrodeposition auxiliary device is brought into close contact with it so that the plating solution does not come into contact with the relevant part.

[0003]

[Problems to be solved by the device]

 However, when the weight of the grinding wheel base material becomes large, the auxiliary device is made of vinyl chloride-based material, etc., so that the rigidity is insufficient, and when the grinding wheel base material is lifted from the plating tank, There is a risk of causing inconvenience such as reduced adhesion to the material. Further, if the thickness of the auxiliary device is increased in order to solve the lack of rigidity, the auxiliary device becomes large in size, and accordingly, the plating tank must be made large in size.

The present invention has been made to solve this kind of problem, and provides a grinding wheel electrodeposition auxiliary device that is small in size, has sufficient rigidity, and sufficiently functions as an insulator. The purpose is to

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention manufactures a grindstone by immersing a cylindrical metal grindstone base material having a grinding surface on the outer periphery in a plating tank and adhering abrasive grains to the grinding surface. A grinding wheel electrodeposition auxiliary device used in the case, disposed on both end surfaces of the metal grinding stone base material excluding the grinding surface, a metal main body portion electrically connected to the metal grinding stone base material, A seal member, which is sandwiched between the peripheral portion of the metal main body portion and the both end faces and isolates the both end faces from the plating solution, and at least the metal grindstone base material of the metal main body portion is electrically connected to the base material. A non-conductive insulating film that covers a portion other than a portion that is electrically connected, and a connecting member that connects the two metal main body portions.

[0006]

[Action]

 With respect to a cylindrical metal grinding stone base material having a grinding surface on the outer periphery, two metal main body portions of the grinding wheel electric wearing auxiliary device are contacted with both end surfaces that are surfaces other than the grinding surface of the grinding stone base material. Let The two metal main body parts are securely attached to the grinding stone base material by being connected to each other by a connecting member. At this time, a seal member is pressure-bonded between the peripheral portion of the main body portion and the both end faces to isolate the both end faces from the plating liquid, and an insulating film is formed except for the portion contacting the end face. Therefore, even if the grinding stone base material is immersed in the plating bath, the plating layer is not formed on both end surfaces. The grindstone electrodeposition assisting device has sufficient rigidity because the insulating film is formed on the surface of the metal main body, and even if it is small, it can hold and carry the grindstone base material without any trouble.

[0007]

【Example】

 BEST MODE FOR CARRYING OUT THE INVENTION A grinding wheel electrodeposition assisting device according to the present invention will be described in detail below with reference to the accompanying drawings, with reference to preferred embodiments.

As shown in FIG. 1, the grinding wheel electrodeposition assisting device 10 includes holding members 14 a and 14 b, which are metal main bodies mounted on both end surfaces 12 a and 12 b of the metal grinding wheel base material 12.

Here, the grindstone base material 12 is formed in a cylindrical shape, a through hole 16 having a tapered surface formed in the axial direction is defined in the central portion, and a thread groove is defined on the outer peripheral surface. The formed grinding surface 18 is formed. Ring-shaped recesses 20a and 20b are defined on the both end surfaces 12a and 12b.

The holding member 14a is made of a substantially disc-shaped stainless steel having a radius corresponding to the end surface 12a. The holding member 14a is formed with a convex portion 22a that fits into the through hole 16 of the grindstone base material 12, and a hole portion 24 is defined in the central portion through which a tightening bolt 50 as a connecting member described later is inserted. Has been done. A step portion 26 having a diameter larger than that of the hole portion 24 is communicated with the hole portion 24, and a female screw portion 28 a which is further enlarged and penetrates is communicated with the step portion 26. On the end face 12a side of the holding member 14a, a ring body 30a for positioning the holding member 14a by engaging with the recess 20a is provided, and also comes into contact with the bottom surface of the recess 20a to form a grinding stone mother body. A plurality of energizing coils 32a electrically connected to the material 12 are provided, and an O-ring 34a, which is a sealing member, is attached to the peripheral end portion. A ring-shaped recess 36a is defined on the opposite surface of the holding member 14a, and an O-ring 38a is fitted therein. A stainless steel lid member 40a formed integrally with the shaft body 44 of the lifting jig is attached to the opposite surface by screwing the male screw portion 42a into the female screw portion 28a. Further, a lid member 46 is screwed into the inner part of the female screw portion 28a and is in close contact with an O-ring 49 to liquid-tightly close the tightening bolt 50 side described later from the outside. An insulating film 47 made of non-conductive hard rubber or the like is formed on the surface of the holding member 14a that does not face the end surface 12a and the surface of the lid member 40a to be electrically insulated.

The holding member 14b and the lid member 40b attached to the holding member 14b are formed in substantially the same manner as the holding member 14a and the lid member 40a, and therefore, the same components are designated by the same reference numerals. The reference numeral b is given and its description is omitted.

A female screw portion 48 for the tightening bolt 50 is formed on the convex portion 22b of the holding member 14b. Therefore, the head portion 52 of the tightening bolt 50 is brought into contact with the stepped portion 26 of the hole 24 of the holding member 14a, and the tip portion 54 is screwed into the female screw portion 48 of the holding member 14b. 14b are attached to both end surfaces 12a and 12b of the grindstone base material 12. In this case, the O-rings 34a, 34b are pressure-bonded to liquid-tightly shield the end faces 12a, 12b of the grinding stone base material 12 from the outside.

In this way, the grindstone base material 12 integrated with the grindstone electrodeposition assisting device 10 is immersed in the grindstone manufacturing apparatus 100. The manufacturing apparatus 100 is configured as follows.

As shown in FIG. 2, the grindstone manufacturing apparatus 100 includes a cylindrical plating tank 112 filled with a plating solution 111, and a bulging portion 116 in which a groove 114 is formed around the inner bottom surface of the plating tank 112. The bulging portion 118 is provided and the bulging portion 118 is formed inside the bulging portion 116. A plurality of holes 120 are formed in the bulging portion 116. A cylindrical anode case 122 is fitted and installed in the groove 114 on the bulged portion 116. The anode case 122 is composed of a titanium mesh 124, and a bag-shaped interior thereof is filled with nickel particles 126. An abrasive grain holding case 128 is placed on the bulging portion 118 via a pedestal 119. The abrasive grain holding case 128 has a cylindrical case 132 in which a hole 130 for passage of the plating solution 111 is defined and an upper portion is opened. A nylon mesh 134 is attached to the inner peripheral portion of the case 132 so that the abrasive grains 138 described later do not come out. The grinding stone base material 12 is installed inside the abrasive grain holding case 128 so as to be sufficiently separated from the inner peripheral surface of the case 132. Abrasive grains 138 are filled between the grinding stone base material 12 and the case 132. As the abrasive grains 138, for example, cubic boron nitride, diamond or the like is used. The anode case 122 and the grindstone base material 12 are connected to the anode and cathode of the power source 137, respectively.

The grinding wheel electrodeposition assisting device 10 thus configured is used in the following manner together with the grinding wheel manufacturing apparatus 100 to manufacture a grinding wheel.

First, the auxiliary device 10 is attached to the grinding stone base material 12. That is, the holding member 14a positions the end surface 12a of the whetstone base material 12 by inserting the protrusion 22a into the through hole 16 of the whetstone base material 12 and fitting the ring body 30a into the recess 20a. At this time, the O-ring 34a is held between the holding member 14a and the end surface 12a. The energizing coil 32a abuts the recess 20a of the grinding stone base material 12. Similarly, after the holding member 14b is positioned on the end surface 12b of the grindstone base material 12, the tightening bolt 50 is inserted into the hole 24 of the holding member 14a. Since the head portion 52 of the tightening bolt 50 is engaged with the stepped portion 26 and the tip portion 54 is screwed into the female screw portion 48 of the holding member 14b, the tightening bolt 50 is retained by holding it. The members 14a and 14b are fastened to the end faces 12a and 12b of the grindstone base material 12, and the O-rings 34a and 34b are brought into close contact with each other. Subsequently, the lid member 46 is screwed into the female screw portion 28a of the holding member 14a and is crimped to the O-ring 49 to liquid-tightly shut off the tightening bolt 50 side from the outside. Following the lid member 46, the male screw portion 42a of the lid member 40a is screwed into the female screw portion 28a, so that the O-ring 38a is mounted in a clamped state. Similarly, the lid member 40b is also attached to the holding member 14b.

A grindstone is manufactured as follows using the grindstone electrodeposition assisting device 10 configured as described above.

First, the ground surface 18 of the grindstone base material 12 is preliminarily plated with 2 to 5 μ of undercoat. Next, as shown in FIG. 2, the grindstone base material 12 is installed inside the abrasive grain holding case 128 in the plating bath 112 together with the auxiliary device 10. Then, the abrasive grains 138 are filled in the abrasive grain holding case 128. At this time, since the grindstone base material 12 and the inner peripheral surface of the case 132 are sufficiently separated from each other, the abrasive grains 138 are smoothly filled between the grindstone base material 12 and the case 132.

Next, the shaft body 44 of the lifting jig and the anode case 122 are connected by an electric circuit. In this case, the shaft body 44 is attached to the grindstone preform 12 through the lid member 46, the holding member 14a, and the energizing coil 32a, or from the holding member 14a through the tightening bolt 50, the holding member 14b, and the energizing coil 32b. It is electrically connected. Then, the plating solution 111 inside is stirred by a stirring means (not shown). As a result, the plating solution 111 enters the anode case 122 and the abrasive grain holding case 128 through the titanium mesh 124, the nylon mesh 134 and the passage hole 130, and the nickel agglomerates 126 and the grindstone base material 12 are introduced. To contact. By controlling the plating time, only the abrasive grains 138 in contact with the grinding surface 18 are bonded to the grindstone base material 12 by the plating layer in an amount of about 7 to 15% of the grain size. As a result, the abrasive grains 138 are electrodeposited on the surface of the grinding stone base material 12.

In this case, except for the ground surface 18, the insulating members 47 are electrically insulated by the holding members 14a and 14b and the lid members 40a and 40b, and the O-rings 34a, 34b, 38a and 38b. This prevents the plating solution from entering. Therefore, the plating layer does not deposit on the portions of the grinding stone base material 12 that do not require plating, the holding members 14a and 14b, and the lid members 40a and 40b.

In the auxiliary device 10, the shaft members 44 of the lifting jig can be attached to the opposite end surface 12b by removing the lid members 40a and 40b from the holding members 14a and 14b and replacing them. ..

As described above, when the grinding stone electrodeposition assisting device 10 according to the present embodiment is used, the holding members 14a and 14b and the lid members 40a and 40b having the insulating film 47 formed on the surface thereof are electrically connected to each other. Since the holding members 14a, 14b are made of stainless steel and are insulated from each other, sufficient rigidity can be maintained against vibration and the like when the grindstone base material 12 is conveyed, even if it is thin. Therefore, the O-rings 34a, 34b, 38a, 38b prevent the plating solution from entering, and the plating layer is deposited on the portions of the grinding stone base material 12 which do not require plating, the holding members 14a, 14b, and the lid members 40a, 40b. There is nothing to do. Therefore, it is possible to reduce the size of the grinding stone base material 12 equipped with the auxiliary device 10, that is, the plating tank 112.

[0023]

[Effect of the device]

 According to the grinding wheel electrodeposition assisting device of the present invention, the following effects can be obtained.

That is, in a cylindrical metal grindstone base material having a grinding surface on the outer periphery, the two metal main body portions that are in contact with both end surfaces of the grindstone base material other than the grinding surface are the end surfaces. Since the insulating film is formed on the surface other than the surface facing the surface, it is possible to prevent the plating layer from being formed on an unnecessary surface even when the grinding stone base material is immersed in the plating tank. Further, since the grinding wheel electro-deposition assisting device is made of metal, it is possible to obtain sufficient rigidity necessary for conveying the grinding wheel base material, and a small size can sufficiently cope with it.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a whetstone electrodeposition assisting device according to the present invention mounted on a whetstone base material.

FIG. 2 is an explanatory view of a use state of the grindstone manufacturing apparatus in a state where the grindstone base material is mounted on the grindstone electrodeposition assisting device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Whetstone electro-deposition assisting device 12 ... Whetstone base material 14a, 14b ... Holding member 34a, 34b, 38a, 38b, 49 ... O-ring 47 ... Insulating film 50 ... Tightening bolt 100 ... Whetstone manufacturing apparatus

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Hidehiro Kurono 1-10-1 Shin-Sayama, Sayama-shi, Saitama Honda Engineering Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A grinding wheel electric wear assist used when manufacturing a grindstone by immersing a cylindrical metal grindstone base material having a grinding surface on the outer periphery in a plating tank and adhering abrasive grains to the grinding surface. A device, which is disposed on both end surfaces of the metal grindstone base material excluding the grinding surface,
A metal main body that is electrically connected to the metal grindstone base material, and a seal member that is sandwiched between the peripheral edge of the metal main body and the both end surfaces and that separates the both end surfaces from a plating solution. A non-conductive insulating film that covers at least a portion of the metal main body portion other than a portion electrically connected to the metal grinding stone base material; and a connecting member that connects the two metal main body portions, A grinding wheel electrodeposition assisting device, comprising: 2. The grinding wheel electrodeposition auxiliary device according to claim 1, wherein an energizing coil is arranged between the metal main body and the metal grinding stone base material.