JP7128398B2 - Empty can type cylindrical grinding wheel - Google Patents

Description

The present invention also relates to a superabrasive grinding wheel in which abrasive grains are adhered to the outer peripheral surface of a cylindrical body serving as a base metal. Manufacture of an empty can-type cylindrical grinding wheel in which a large number of holes are drilled in a cylindrical body and superabrasive grains are fixed to the inner peripheral surface of the inner wall surface of the cylindrical body, and a grinding device and an empty can-shaped cylindrical body using this grinding wheel. Concerned with those who provide the law.

In recent years, a grinding wheel has been developed in which a grinding fluid is passed through a metal base metal having approximately 1,000 or more fine holes of about Φ0.5 mm radially from the center of rotation.
Also, a grinding wheel has been developed in which 120 grooves of 0.3 mm width are provided on the outer circumference of the metal base metal, and the grinding fluid is passed through each groove to reach the machining point.
After the superabrasive grains are electroplated on the base metal with finely machined pores or grooves, the mask must be removed, requiring high production costs and a long production time. It is in.

In addition, there is another grinding wheel that has been improved to increase the holding power of abrasive grains, increase the service life of the grinding tool, improve the removal of cutting debris, and perform high-precision machining at high speed. . More specifically, fibers such as carbon, glass, ceramics, thermosetting resins, metals, etc. are woven, knitted, or non-woven into a multi-layered porous tube 1, and the inside of the porous holes is exposed to the surface. to fix the abrasive grains 2. Adhesion is by electroplating, electroless plating, PVD, CVD vapor phase plating, or laser welding. A grinding member consisting of a tube 1 to which abrasive grains 2 are fixed is fixedly attached to a shank 3. The shank 3 is formed with a cooling liquid supply hole 3a in the central axis and an opening 3b in the portion where the tube 1 is fitted. There is one in which cooling liquid can be jetted from the hole 1a of the cooling tube (see, for example, Patent Document 1).

JP-A-5-208371

The grinding tool disclosed in Japanese Patent Laid-Open No. 5-208371 includes a tube 1 in which fibers such as carbon, glass, ceramics, thermosetting resins, and metals are woven, knitted, or non-woven into a multi-layer porous structure. Abrasive grains 2 are fixed from the inside of the hole to the surface. As a result, a grinding member consisting of a tube 1 to which abrasive grains 2 are fixed is fixedly attached to a shank 3. The shank 3 is formed with a cooling liquid supply hole 3a in the central axis thereof and an opening 3b at the fitting portion of the tube 1. , the coolant can be ejected from the hole 1a of the porous tube. However, since the abrasive grains 2 are fixed to the outer peripheral surface of the grindstone from the inside of the porous hole to the surface, the hole becomes a narrow gap, and the hole is clogged in a short period of time, resulting in the initial ejection of the cooling liquid. A problem is pointed out that it will not be possible to maintain

In addition, the above metal base metal has about 1,000 or more pores with a diameter of about 0.5 mm radially from the center of rotation. 120 grooves with a width of 0.3 mm are provided in the grinding wheel, and the grinding fluid reaches the processing point from each groove in the wheel. Since the superabrasive grains of the base metal, which is a highly rigid body, may be forcibly rubbed against the ground surface, distortion and surface roughness appear on the ground surface, resulting in a problem of defective products with insufficient accuracy.

As described above, the inventor of the present application makes the grinding liquid (hereinafter also referred to as coolant liquid) from within the grinding wheel, which has about 1,000 or more pores of about Φ0.5 mm radially from the center of rotation, reach the processing point. A grinding wheel or a grinding wheel in which 120 grooves of 0.3 mm width are provided on the outer circumference of a metal base metal, and a grinding fluid is passed through each groove in the wheel. Furthermore, in view of the problems inherent in porous annular grindstones, etc., an attempt was made to develop a new grinding wheel.
Therefore, we focused on the drawbacks of the grinding wheel that forcibly rubs the grinding surface of the work to be ground with the superabrasive grains of the base metal, which is a highly rigid body, which appears as distortion and surface roughness on the grinding surface. Empty can-type cylindrical grinding whetstone in which the cylindrical body to be the metal is a thin can-shaped cylindrical body with one side open, a large number of small holes are formed in the outer peripheral surface of the cylindrical body, and superabrasive grains are electrodeposited, the grinding device, and the empty can We have developed an elite method for manufacturing mold cylinders.

The empty can-shaped cylindrical grinding wheel according to claim 1, which achieves the above object, has a thin can-shaped cylindrical body with one side closed, and a central position of the side wall opposite to one side of the empty can-shaped cylindrical body. It has a mounting hole with a rotating shaft, a large number of small holes or slit holes are provided on the outer peripheral surface of the empty can-shaped cylindrical body, and the center of the rotating shaft connects the center through coolant liquid to the empty can-shaped cylindrical body. An empty can-shaped cylindrical grinding wheel having a hole and supplying a pulsating or non-pulsating coolant liquid from a coolant supply device into an empty can-shaped cylindrical body to reach a machining point, wherein a rubber thin film is formed on the inner wall surface of the empty can-shaped cylindrical body. material is lined, and diamond abrasive grains, CBN abrasive grains, WA abrasive grains, or GC abrasive grains are fixed to the surface of the rubber thin film material.

The empty can-shaped cylindrical grinding wheel according to claim 2 has a thin can-shaped cylindrical body with one side closed, and a rotary shaft is mounted at the center position of the side wall on the side opposite to one side of the empty can-shaped cylindrical body. having holes, a large number of small holes or slit holes are provided on the outer peripheral surface of the empty can-shaped cylindrical body, and the rotating shaft is provided with a center hole for connecting the center through coolant liquid to the empty can-shaped cylindrical body, An empty can-shaped cylindrical grinding wheel in which pulsating or non-pulsating coolant is supplied from a coolant supply device into an empty can-shaped cylindrical body to reach a machining point, wherein the inner wall surface of the empty can-shaped cylindrical body is lined with a rubber thin film material, The rubber thin film material is characterized in that diamond abrasive grains, CBN abrasive grains, WA abrasive grains, or GC abrasive grains are kneaded and contained.

The empty can-shaped cylindrical grinding wheel according to claim 3 has a thin can-shaped cylindrical body with one side closed, and a rotating shaft is attached to the center of the side wall on the side opposite to one side of the empty can-shaped cylindrical body. having holes, a large number of small holes or slit holes are provided on the outer peripheral surface of the empty can-shaped cylindrical body, and the rotating shaft is provided with a center hole for connecting the center through coolant liquid to the empty can-shaped cylindrical body, In an empty can-shaped cylindrical grinding wheel in which a pulsating or non-pulsating coolant liquid is supplied from a coolant supply device into an empty can-shaped cylindrical body to reach a machining point, diamond abrasive grains or CBN abrasive grains or It is characterized by lining with a non-woven fabric woven with either WA abrasive grains or GC abrasive grains.

The empty can-shaped cylindrical grinding wheel according to claim 4 has a hollow can-shaped cylindrical body closed with a thin wall, and has a mounting hole for a rotary shaft at the center position of one side wall and the opposite side wall of the empty can-shaped cylindrical body. A large number of small holes or slit holes are provided on one side surface of the empty can-shaped cylindrical body, and a center hole is formed in the rotating shaft to connect the center-through coolant liquid to the empty can-shaped cylindrical body. In an empty can-shaped cylindrical grinding wheel in which a coolant liquid with pulsating or non-pulsating pressure is supplied into an empty can-shaped cylindrical body and reaches a processing point, the inner wall surface of the empty can-shaped cylindrical body is lined with a rubber thin film material, and the rubber It is characterized in that either diamond abrasive grains, CBN abrasive grains, WA abrasive grains, or GC abrasive grains are adhered to the surface of the thin film material.

The empty can-shaped cylindrical grinding wheel of claim 5 has a hollow can-shaped cylindrical body closed with a thin wall, and has a mounting hole for a rotating shaft at the center position of one side wall and the opposite side wall of the empty can-shaped cylindrical body. One side surface of the empty can-shaped cylindrical body is provided with a large number of small holes or slit holes, and the rotating shaft is provided with a center hole for connecting the center-through coolant liquid to the empty can-shaped cylindrical body, supplying coolant. In an empty can-shaped cylindrical grinding wheel in which a pulsating or non-pulsating coolant liquid from a device is supplied into an empty can-shaped cylindrical body to reach a machining point, the inner wall surface of the empty can-shaped cylindrical body is lined with a rubber thin film material, and the rubber The thin film material is characterized by kneading diamond abrasive grains, CBN abrasive grains, WA abrasive grains or GC abrasive grains.

The empty can-shaped cylindrical grinding wheel according to claim 6 has a hollow can-shaped cylindrical body closed with a thin wall, and has a mounting hole for a rotating shaft at the center position of one side wall and the opposite side wall of the empty can-shaped cylindrical body. The outer surface of the empty can-shaped cylindrical body is provided with a large number of small holes or slit holes, and the rotating shaft is provided with a center hole for connecting the center-through coolant liquid to the empty can-shaped cylindrical body. In an empty can-shaped cylindrical grinding wheel in which a pulsating or non-pulsating coolant liquid is supplied into an empty can-shaped cylindrical body and reaches a machining point, diamond abrasive grains, CBN abrasive grains, or WA abrasive grains are provided on the inner wall surface of the empty can-shaped cylindrical body. or lined with a non-woven fabric woven with either GC abrasive grains.

According to the empty can-shaped cylindrical grinding wheel of claim 1 , the weight of the empty can-shaped cylindrical body serving as the base metal is very light, and the outer peripheral surface of the can-shaped cylindrical body flexibly and lightly contacts the grinding surface of the workpiece to be ground. , When the grinding liquid is pressurized into the blockage of the empty can-shaped cylindrical body, the rubber thin film material lining the inner wall surface of the small hole or slit hole on the outer peripheral surface of the empty can-shaped cylindrical body flows into the empty can-shaped cylindrical body. When the coolant is pressurized from the sluice, the grinding surface is lightly ground by the superabrasive grains on the outer peripheral surface of the rubber thin film that bulges out from the large number of small holes or slit holes opened on the outer peripheral surface. can. As a result, unlike a balloon grindstone, a highly accurate ground/polished surface can be obtained without causing distortion or surface roughness on the ground surface.

According to the empty can-shaped cylindrical grinding wheel of claim 2 , in the empty can-shaped cylindrical grinding wheel of claim 1 , the inner wall surface of the empty can-shaped cylindrical body is lined with a rubber thin film material, and the rubber thin film material is lined with diamond abrasive grains . Or, since either CBN abrasive grains, WA abrasive grains, or GC abrasive grains are kneaded and contained, the rubber thin film material lined on the inner wall surface of the small hole or slit hole on the outer peripheral surface of the empty can-shaped cylindrical body is an empty can-like The pressurization of the coolant liquid from the center through which flows into the cylindrical body protrudes from the small holes or slit holes on the outer peripheral surface to the grinding surface like a balloon grindstone, and the highly accurate ground surface is produced without causing distortion or surface roughness. can get. Furthermore, even if the rubber thin film material wears away, the abrasive grains are exposed from the inside and the grinding and polishing performance is maintained.

According to the empty can-type cylindrical grinding wheel of claim 3 , in the empty can-type cylindrical grinding wheel of claim 1 , diamond abrasive grains, CBN abrasive grains, or WA abrasive grains are used instead of the rubber thin film material on the inner wall surface of the empty can-shaped cylindrical body. Because the inner lining is a non-woven fabric woven with either grains or GC abrasive grains, the water pressure of the coolant liquid will pop out from the mesh and holes of the non- woven fabric , making it possible to perform polishing and lapping, resulting in dramatically improved surface roughness. improves.

In the empty can-shaped cylindrical grinding wheel according to claim 4, the inner wall surface of the empty can-shaped cylindrical body is lined with a rubber thin film material, and the rubber thin film material contains diamond abrasive grains, CBN abrasive grains, WA abrasive grains, or GC abrasive grains . Since either one is fixed, the pressurization of the coolant liquid from the center through which flows into the empty can-shaped cylindrical body projects from the small holes or slit holes on the outer peripheral surface to the grinding surface like a balloon grindstone, causing distortion and surface distortion. A high-precision ground surface can be obtained without causing roughness.
Further, in the empty can type cylindrical grinding wheel of claim 5 , diamond abrasive grains, CBN abrasive grains, WA abrasive grains or GC abrasive grains are kneaded into the rubber thin film material, so the rubber thin film material is worn. However, the abrasive grains are sequentially exposed from the inside, and the polishing performance is maintained for a long period of time. As a result, unlike a balloon grindstone, a highly accurate ground/polished surface can be obtained without causing distortion or surface roughness on the ground surface.

In the empty can-shaped cylindrical grinding wheel according to claim 6 , the inner wall surface of the empty can-shaped cylindrical body is lined with a non-woven fabric woven with diamond abrasive grains, CBN abrasive grains, WA abrasive grains, or GC abrasive grains . With this water pressure, it pops out from the mesh and holes of the non- woven fabric , enabling polishing and lapping, which dramatically improves the surface roughness of the ground/polished surface.

FIG. 2 shows the first embodiment of the present invention and is a manufacturing process diagram of an empty can-shaped cylindrical body with open and closed side surfaces. FIG. 10 is a perspective view of an empty can-shaped cylindrical body having an opening on a side surface, showing a second embodiment of the present invention; FIG. 10 is a perspective view of each empty can-shaped cylindrical body having an open side surface and a small hole on the outer peripheral surface, showing a third embodiment of the present invention; FIG. 10 is a perspective view of each empty can-shaped cylindrical body with closed side surfaces and small holes on the outer peripheral surface, showing a fourth embodiment of the present invention; FIG. 11 is a perspective view showing a fifth embodiment of the present invention, in which a rubber thin film material and others are built in an empty can-shaped cylindrical body; FIG. 10 is a perspective view of a closed empty can-shaped cylindrical grindstone with a small hole on one side, showing a sixth embodiment of the present invention. FIG. 10 is a view showing a seventh embodiment of the present invention, and is an installation view of a grinding wheel shaft of an empty can-shaped cylindrical grinding wheel with an open side surface. Fig. 2 is a cross-sectional view showing an embodiment of the present invention, in which a sensor unit is built in an empty can-shaped cylindrical body; BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an empty can-shaped cylindrical grinding wheel applied to blade polishing, showing an embodiment of the present invention; 1 is a functional diagram of a coolant supply device for generating pulsating pressure and non-pulsating pressure liquid, showing an embodiment of the present invention; FIG. FIG. 2 shows an embodiment of the present invention, and is a cross-sectional view of grinding action of each grindstone with pulsating pressure and non-pulsating pressure liquid from a coolant supply device. FIG. 4 is a specific mounting cross-sectional view of each empty can-shaped cylindrical body, showing an embodiment of the present invention, with closed faces and small holes on the outer peripheral face and side faces; FIG. 2 is a specific mounting cross-sectional view of an empty can-shaped cylindrical body having an open side surface and a small hole on the outer peripheral surface, showing an embodiment of the present invention. FIG. 2 is a cross-sectional view of a concrete implementation of an embodiment of the present invention, in which a rubber thin film material and the like are built in an empty can-shaped cylindrical body with closed sides and small holes on the outer peripheral surface. FIG. 2 is a cross-sectional view of a concrete implementation of an embodiment of the present invention, in which a rubber thin film material and the like are built in an empty can-shaped cylindrical body with closed sides and small holes on the outer peripheral surface.

1 to 15, the embodiment of the present invention is mainly composed of an empty can-shaped cylindrical body formed with a thin wall, and a large number of holes are formed in the outer peripheral surface and the side surface of the cylindrical body, and various abrasive grains are placed in the cylindrical body. Disclosed are various forms of empty can type cylindrical grinding wheels fixed to the outer or inner peripheral surface. Further, in addition to equipping a grinding apparatus with the empty can-type cylindrical grinding wheels, embodiments of manufacturing methods for the empty can-type cylindrical grinding wheels will be sequentially described.

First, FIGS. 1 and 2 show manufacturing process diagrams of an empty can-shaped cylindrical body 10 with one side open, which is the first embodiment of the present invention, and an empty can-shaped cylinder 20 with one side closed, according to the second embodiment. A manufacturing procedure for manufacturing an empty can-shaped cylindrical body will be described with reference to manufacturing process diagrams.
In FIG. 1, an empty can-shaped cylindrical body 10 is produced by a process A in which a thin plate 2 is attached to the side of the rotation center O of a split mold 1 that serves as a male mold, and a drawing process in which the thin plate is squeezed with a spatula bar 3 when the split mold rotates. B, an opening process C of the drawn empty can body 10, a small hole h or a slit L in the outer peripheral surface 10A of the opened empty can body 10, and a mounting hole S1 for the main shaft S in the side wall 10B of the empty can body 10. A hole punching process D, a masking process E, a superabrasive grain electrodeposition process F for fixing the superabrasive grains 11 to the outer peripheral surface 10A of the empty can body 10 in the electrodeposition bath 4, and a mask M peeling process G It is manufactured from the completion process H and.

2 and 3 are perspective views of the completed empty can-like cylindrical body 10. FIG. This empty can-shaped cylindrical body 10 is an open type in which one side 10C is opened. Next, the empty can-shaped cylindrical body 20 is a closed type with a closed side surface 20C. 1 and 4, the manufacturing process is a step A of attaching a thin plate 2 to the side of the rotation center of a male split mold 1 that can be finely disassembled, and squeezing the thin plate with a spatula bar 3 when the split mold rotates. A drawing step B in which the outer peripheral edge 20A of the thin plate forms a mounting hole S1, a step C in which the split mold 1 in the molded empty can body 20 is pulverized, and a small hole is formed in the outer peripheral surface 20A of the opened empty can body 20. h or slit L drilling step D, masking step E, superabrasive grain electrodeposition step F for adhering superabrasive grains 13 to the outer peripheral surface 20A of the empty can body 20 in the electrodeposition bath 4, and mask M It is manufactured from a completion process H and a peeling process G.

The above empty can-shaped cylindrical bodies 10 and 20 are manufactured by the classical spatula drawing method. Manufactured through G. The manufacturing method by drawing can also be manufactured by a cutting method or a pressing method. However, thin can-shaped cylindrical bodies 10, 20, etc., which are thin and have arbitrary shapes, are manufactured with high productivity. .

Next, empty can-shaped cylindrical bodies 10 and 11 according to a third embodiment and a fourth embodiment will be described with reference to FIG. The configuration of the empty can-shaped cylindrical body 10 is as shown in FIG. 3(a). A large number of small holes h are provided in the outer peripheral surface 10A of the empty can-shaped cylindrical body. An empty can-type cylindrical grinding wheel K1 is constructed to which superabrasive grains 13 such as grains or WA and GC abrasive grains are fixed.

The empty can-shaped cylindrical body 11 shown in FIG. 3(b) is the empty can-shaped cylindrical body 10 shown in FIG. In this embodiment, a large number of slit holes L are provided on the surface 11A. That is, the cylindrical body is a thin can-shaped cylindrical body 11 having a low rigidity and one side 11C is open, and the side wall 11B on the opposite side of the empty can-shaped cylindrical body has a mounting hole S1 for the rotating shaft S, Innumerable slit holes L are provided on the outer peripheral surface 11A of the cylindrical body, and superabrasive grains such as diamond abrasive grains, CBN abrasive grains, WA abrasive grains, or GC abrasive grains are provided on the outer peripheral surface 11A of the empty can-shaped cylindrical body. An empty can type cylindrical grinding wheel K2 to which 13 is fixed is constructed. As described above, each of the empty can-shaped cylindrical bodies 10 and 11 has superabrasive grains fixed to the outer peripheral surfaces 10A and 11A by means of electrodeposition, crimping, welding or the like (generally referred to as fixing), and the side walls 10B and 11B. It is an open type in which the side wall surfaces 10C and 11C opposite to the mounting hole S1 of 11B are opened.

Next, empty can-shaped cylindrical bodies 20 and 21 shown in FIGS. 4A and 4B, which are fifth and sixth embodiments, will be described. The structure is a closed type with closed side wall surfaces 20C and 21C. The empty can-shaped cylindrical grinding wheels K3 and K4 are composed of empty can-shaped cylindrical bodies 20 and 21 which are thin with low rigidity and closed at one side 20C and 21C, and have side walls 20B and 21B on opposite sides of the empty can-shaped cylindrical bodies. has mounting holes S1, S1 with the rotating shaft S, and the outer peripheral surfaces 20A, 21A of the empty can-shaped cylindrical body are provided with countless small holes h or slit holes L, and the outer periphery of the empty can-shaped cylindrical body Superabrasive grains 13 are fixed to the surface by means of electrodeposition, crimping, welding or the like (generally referred to as fixing). The empty can type cylindrical grinding wheel K3 and the empty can type cylindrical grinding wheel K4 are configured by the above configuration.

Further, referring to FIGS. 5A and 5B, which are seventh and eighth embodiments, the structures of the empty can-type cylindrical grinding wheel K5 and the empty can-type cylindrical grinding wheel K6 will be described. In this embodiment, the inner wall surfaces of the empty can-shaped cylindrical bodies 20 and 21 are lined with a rubber thin film material G, and the surface of the rubber thin film material is coated with diamond abrasive grains, CBN abrasive grains, WA abrasive grains, or GC abrasive grains. Any one of the abrasive grains 13 is fixed. Further, in a design change, the inner wall surfaces of the empty can-shaped cylindrical bodies 20 and 21 are lined with a rubber thin film material G, and diamond, CBN electrodeposited abrasive grains, WA or GC abrasive grains are placed inside the rubber thin film material. The superabrasive grains 13 may be fixed or kneaded and contained inside. The rubber thin film has a large number of small holes h1 through which the coolant CK can flow. Furthermore, the rubber thin film material G is not limited to be attached to the inner wall surface of the empty can-shaped cylindrical bodies 20 and 21. As shown in the ninth embodiment of FIG. The non-woven fabric W may be woven with grains attached thereto. In the empty can type cylindrical grinding wheel K7 made of this nonwoven fabric W, the coolant liquid CK passes through the nonwoven fabric W under this water pressure, jumps out from the hole h or the slit L, and can also be wrapped, thereby dramatically improving the surface roughness of the grinding surface. .

FIG. 6A, which is the tenth embodiment, shows an empty can-shaped cylindrical grinding wheel K8 having a diaphragm-type empty can-shaped cylindrical body 30 for processing the grinding surface of a flat workpiece. The empty can-shaped cylindrical body 30 is made of a thin wall with low rigidity, has a closed side wall surface 30B, and has a mounting hole S1 for the rotary shaft S on the side wall 30C on the opposite side. Innumerable small holes h (or slit holes L) are provided in the side wall surface 30B, and diamond abrasive grains, CBN abrasive grains, WA abrasive grains, or GC abrasive grains are provided on the outer surface of the side wall surface 30B. Abrasive grains 13 are fixed.

Of course, on the inner wall surface of the empty can-shaped cylindrical body 30, in the eleventh embodiment shown in FIG. In the embodiment, instead of the rubber thin film material G, an empty can-type cylindrical grinding wheel K10 that employs a non-woven fabric W woven with diamond abrasive grains or the like may be used. According to this thin rubber material G and non-woven fabric W, the coolant liquid CK is ejected from the small holes h1 and the holes in the weave by the water pressure, and polishing up to polishing and lapping is possible, and the surface roughness of the ground surface is dramatically improved. .

An example of processing by a grinding machine 100 (not shown in detail) in which the empty can-type cylindrical grinding wheels K1 to K10 are attached to a rotating shaft S, which is the main axis of the grinding machine 100, will be described next. In FIG. 7, the attachment of the grinding wheels K1 to K10 to the center-through type rotary shaft S and the attachment of the grinding wheels K1 and K2 to the rotary shaft S1 of the external nozzle N will be described. FIG. 7(a) shows a state in which empty can-type cylindrical grinding wheels K1 to K10 are mounted on a center-through type rotating shaft S, with the open sides 10C and 11C of K1 and K2 facing outward.
FIG. 7(b) shows a state in which empty can-type cylindrical grinding wheels K1 and K2 are attached to the rotating shaft S3 of the external nozzle N with the open sides 10C and 11C facing inward. FIG. 7(c) shows a state in which the empty can type cylindrical grinding wheels K3 to K10 are mounted on the center-through type rotating shaft S with the mounting holes S1 inside.

FIG. 13 shows an open-type mounting device in which empty can-type cylindrical grinding wheels K1 and K2 are attached to the rotating shaft S3 of the external nozzle N shown in FIG. That is, the rotating shaft S is fastened to the center-through tool holder H0, and the coolant CK is supplied into the empty can-type cylindrical grinding wheels K1 and K2, and is ejected from the small holes h or slits L toward the grinding surface KM. A side nozzle N is additionally installed.

Thus, the empty can type cylindrical grinding wheels K1 and K2 with one side 10C and 11C open are attached to the center-through type rotary shaft S in FIG. This is the attachment of the nozzle N to the rotation shaft S3. The supply of the grinding fluid CK to the rotating shaft S and the side nozzle N is performed by supplying the coolant fluid CK at pulsating pressure to non-pulsating pressure from the coolant supply device 50 shown in FIG. supply. The coolant supply device 50 includes a two-cylinder plunger pump P (single-cylinder AC, BC) that supplies the coolant liquid CK in the tank T by a motor MO as a drive source, and a pulsating pressure coolant discharged from the plunger pump P. Equipped with check valves V1 to V5 for switching the liquid CK in various ways. By switching the check valves V1 to V5, four types of coolant liquid CK are piped and supplied to the empty can type cylindrical grinding wheels K1 to K10. The coolant liquid CK to be discharged is controlled by the NC control program PG from the NC control device 60, the pressure P1 of the single cylinder AC, the pressure P2 of the single cylinder BC, the combined pressure (P1+P2) P3 of both, and the combined pressure ( P1+P2) P3 is put into the accumulator AQ and it is switched to 4 kinds of constant pressure P0.

Thus, as shown in FIGS. 3 to 4 and FIG. 7A, empty can type cylindrical grinding wheels K1 to K4 having superabrasive grains 13 fixed to the outer peripheral surfaces 10A, 11A, 20A, and 21A When either the pressure P1 of the single cylinder A, the pressure P2 of the single cylinder B, the combined pressure P3 of both, or the constant pressure P0 by the accumulator AQ is supplied from the coolant supply device 50 of FIG. Grinding fluid (also referred to as coolant fluid) CK is sprayed onto the grinding surface KM from countless small h-holes or slit holes L, and the super-abrasive grains 13 lightly grind the grinding surface KM. That is, the basic grinding action is to wash off the grinding dust and abrasive grains with the static pressure or pulsating grinding fluid CK while grinding the grinding surface with the superabrasive grains 13 of the outer peripheral surfaces 10A, 11A, 20A, and 21A. carried out. The weight of the empty can-shaped cylindrical bodies 10, 11, 20, 21, which serve as the base metal, is very light, and the outer peripheral surfaces 10A, 11A, 20A, 21A of the empty can-shaped cylindrical bodies are flexible with respect to the grinding surface KM of the work to be ground. The flow of the grinding fluid CK makes it possible to obtain a highly accurate ground or polished surface without heat generation, distortion or surface roughness of the ground surface.

Further, as shown in FIG. 7(b), when the grinding fluid CK is sprayed from the nozzle N into the empty can-shaped cylindrical bodies K1 and K2 from the open sides, the countless small h-holes or slit holes on the outer peripheral surface Grinding liquid CK is evenly sprayed from L onto the grinding surface KM, and the surface can be lightly ground with superabrasive grains. That is, when either the pressure P1 of the single cylinder A, the pressure P2 of the single cylinder B, the combined pressure P3 of both, or the constant pressure P0 by the accumulator AQ is supplied from the coolant supply device 50, the countless small particles on the outer peripheral surface are supplied. While the grinding fluid CK is sprayed from the h-hole or the slit hole L onto the grinding surface KM, the super-abrasive grains 13 lightly grind. As a result, a highly accurate ground or polished surface can be obtained due to the flow of the grinding liquid without the grinding surface generating heat, causing distortion or surface roughness.

The can-shaped cylindrical grinding wheels K3 to K10 composed of the empty can-shaped cylindrical bodies 20 and 21 shown in FIGS. It will be installed. The coolant liquid CK discharged from the coolant supply device 50 is selected and switched to the pressure P1 of the single cylinder A, the pressure P2 of the single cylinder B, the combined pressure P3 of both, the constant pressure P0 by the accumulator AQ, etc. Coolant liquid CK at pulsating pressures P1, P2, P3 to non-pulsating pressure P0 is injected into the empty can-shaped cylindrical body. As a result, the grinding fluid CK is evenly sprayed onto the grinding surface KM from the countless small h-holes or slit holes L on the outer peripheral surface, and the superabrasive grains 13 lightly grind the grinding surface KM. As a result, the ground surface KM can be ground and polished with high accuracy by the flow of the grinding fluid CK without generating heat, distortion, or surface roughness.

The mounting apparatus shown in FIG. 7(c) is shown in FIG. That is, the rotating shaft S is fastened to the center-through tool holder H0, and the coolant CK is supplied into the empty can-type cylindrical grinding wheels K3 to K10, and ejected from the small holes h or slits L toward the grinding surface KM.
5(a), 5(b), 5(c) and 11(b), 11(c) are shown in FIG. 14 and FIG. That is, the rotating shaft S is tightened to the center-through tool holder H0, and the coolant liquid CK is supplied into the empty can-type cylindrical grinding wheels K3 to K7, and the coolant liquid CK projects out from the small holes of the thin rubber material G or the non-woven fabric W toward the grinding surface KM. be jetted.

By the way, as shown in FIG. 11(b), the inner wall surface of the empty can type cylindrical grinding wheels K3 to K7 is lined with a rubber thin film material G, and the surface of this rubber thin film material is coated with diamond, CBN electrodeposited abrasive grains or WA. , GC abrasive grains 11, the coolant liquid CK discharged from the coolant supply device 50 has the pressure P1 of the single cylinder AC, the pressure P2 of the single cylinder BC, the combined pressure P3 of both, the accumulator It is switched to one of the constant pressures P0 by AQ. Thus, when the rubber thin film material G is built in, the pressure P1 of the single cylinder AC, the pressure P2 of the single cylinder BC, the combined pressure P3 of both, or the constant pressure P0 by the accumulator AQ can be selected. The thin film material G is expanded. Thus, as shown in FIG. 11(b), the thin rubber material G has a large number of small holes or slit holes formed in the outer peripheral surface by the pressure P0 for the coolant liquid CK flowing into the empty can-shaped cylindrical body. The surface to be ground is lightly ground by the superabrasive grains 13 on the outer peripheral surface of the bulging thin rubber material G. As a result, unlike a balloon grindstone, a highly accurate ground surface can be obtained without distortion or surface roughness on the ground surface KM. Further, part of the coolant liquid CK accumulated inside is ejected from a large number of small holes h1 opened in the rubber thin film material G from the bulged portions to lightly lubricate the grinding surface. At this time, according to any of the pressure P1 of the single cylinder AC, the pressure P2 of the single cylinder BC, and the combined pressure P3 of both, the rubber thin film material G bulges from the small hole h or the slit hole L toward the outer diameter side. , the injection amount of the coolant liquid from the small hole h1 fluctuates and pulsates, and a smoother polishing action can be obtained.

That is, when the coolant liquid CK discharged from the coolant supply device 50 is selected as the pressure P1 of the single cylinder A, the pressure P2 of the single cylinder B, and the combined pressure P3 of both, the small hole h or the slit hole L A part of the thin rubber material G bulges outward from the outer nozzle N, and a high-precision ground surface in which the amount of swelling pulsates can be obtained. does not generate heat, and the flow of the grinding fluid produces highly accurate ground and polished surfaces without causing distortion or surface roughness.

Therefore, when each of the empty can-type cylindrical grinding wheels K3 to K7 has only the small holes h or the slits L, the coolant liquid CK at various discharge pressures is discharged from the small holes h or the slits L, and is discharged onto the grinding surface KM. be jetted. At this time, when the coolant liquid with pulsating pressure or non-pulsating pressure is supplied into the empty can-shaped cylindrical body, the abrasive grains remaining on the grinding surface KM of the grinding wheel and the workpiece are actively washed away by the liquid coolant with pulsating pressure or non-pulsating pressure. be As a result, the ground surface is completely free of scratches caused by the abrasive grains 13, and a honed surface and a polished surface can be obtained from the ground surface with high efficiency and high accuracy. That is, the cooling effect of the grinding surface to be polished with the abrasive grains, the discharge of the peeled abrasive grains, and the cooling effect of the ground surface and the abrasive grains are obtained.

Further, when the inner wall surfaces of the empty can-shaped cylindrical bodies K3 to K7 are lined with the rubber thin film material G, when the coolant liquid CK is press-fitted into the closed space of the empty can-shaped cylindrical body, the outer peripheral surface of the empty can-shaped cylindrical body becomes small. The rubber thin film material G lining the inner wall surface of the hole h or the slit hole L extends from the countless small holes or slit holes opened in the outer peripheral surface by the pressure of the coolant liquid CK flowing into the empty can-shaped cylindrical body to the outer diameter side. The superabrasive grains 13 on the outer peripheral surface of the bulging rubber thin film material can grind the grinding surface KM so as to stroke lightly. Thus, a honed surface and a polished surface can be obtained from highly accurate grinding without causing distortion or surface roughness on the ground surface unlike a balloon grindstone. When abrasive grains are kneaded inside the thin rubber material, new abrasive grains are exposed from the inside of the rubber thin film material even if the abrasive grains wear off and the polishing power is maintained.

Furthermore, not only the rubber thin film material G, but also the nonwoven fabric W woven with diamond abrasive grains, etc., as shown in FIG. It is possible to dramatically improve the surface roughness of the ground surface. At this time, the coolant liquid is switched by the NC control program PG from the NC control device 60 to the pressure P1 of the single cylinder AC, the pressure P2 of the single cylinder BC, the combined pressure P3 of both, and the constant pressure P0 by the accumulator AQ. From grinding to polishing required by the ground surface KM, a wide variety of finely ground and polished surfaces can be obtained.

As shown in FIGS. 6(a), 6(b) and 6(c), the empty can-type cylindrical grinding wheel K8 is provided with abrasive grains 13 on the side surface 30B and further with a rubber thin film material G inside. The above effect can also be obtained with the grindstone K10 that employs the nonwoven fabric W woven with abrasive grains and the like. For example, when the coolant liquid CK discharged from the coolant supply device 50 is selected to be the pressure P1 of the single cylinder A, the pressure P2 of the single cylinder B, and the combined pressure P3 of both, the balloon grindstone shown in FIG. A portion of the rubber thin film material G bulges outward from the small hole or the slit hole, and the small hole h1 also bulges outward. In the case of the non-woven fabric W, the coolant liquid CK is ejected from the mesh or holes by the water pressure, and polishing processing and lapping processing are possible, and the surface roughness of the ground surface is dramatically improved.

Further, as shown in FIG. 8, the empty can-shaped cylindrical grinding wheels K1 and K2 are fitted with a rotating shaft S3 in a mounting hole S1 provided in the side wall of the empty can-shaped cylindrical body, and the inside of the empty can-shaped cylindrical bodies 10 and 11 is mounted. A ring-shaped sensor unit SU is fitted to the rotating shaft S of the. The sensor unit SU consists of a self-supporting annular body equipped with a heat sensor HS, a vibration sensor SS, a memory M, a receiver/transmitter R, a power source P and an arithmetic CPU. Thus, the grinding conditions of the empty can type cylindrical grinding wheels K1 and K2 are directly transmitted to the external monitoring device MU, and the optimum grinding action and grinding results can be obtained efficiently while the grinding process is progressing.

Furthermore, as shown in FIG. 9, the empty can type cylindrical grinding wheels K1 and K2 are also employed in a grinding method and a grinding apparatus using a foam coolant liquid CK when grinding the curved surface of a turbine blade TB, for example. This is called three-dimensional free curved surface processing, and cold air (bubble) grinding enables curved surfaces to be ground with ultra-high precision. This means is such that a rotating shaft S3 is fitted in a mounting hole S1 provided in the side wall of the empty can-shaped cylindrical body, and a coolant nozzle N is arranged outside one open side of the empty can-shaped cylindrical body. A coolant liquid CK having a pulsating pressure or a non-pulsating pressure is supplied from a coolant supply device 50 into the cylinder so as to be able to be injected. Furthermore, the cooling liquid is supplied from a cooling device that converts the coolant liquid into a foamed coolant liquid and cools the air in the atmosphere to 0° C. or less.

As described above, each empty can-shaped cylindrical grinding wheel has a mounting hole for the rotating shaft at the center position of one side surface of the empty can-shaped cylindrical body. Alternatively, a slit hole is provided, and the rotating shaft is provided with a center hole for connecting the center through coolant liquid to the empty can-shaped cylindrical body, and the coolant liquid with pulsating or non-pulsating pressure is supplied from the coolant supply device to the empty can-shaped cylindrical body. , to reach the processing point from here. According to the empty can-shaped cylindrical grinding wheels K1 to K9, the grinding apparatus 100, and the manufacturing method of the empty can-shaped cylindrical bodies K1 to K10, the following effects are exhibited.
(1) First, according to the empty can-shaped cylindrical grinding wheels K1 to K10, the weight of the empty can-shaped cylindrical body serving as the base metal is very light, and the outer peripheral surface of the can-shaped cylindrical body is supple with respect to the grinding surface of the workpiece to be ground. Grinding fluid is sprayed inside from the open side of the empty can-shaped cylindrical body, and the grinding fluid is evenly sprayed onto the grinding surface from countless small holes or slit holes on the outer peripheral surface while being lightly rubbed with superabrasive grains. can be ground. As a result, a highly accurate ground/polished surface can be obtained by the flow of the grinding liquid without generating heat on the ground surface and causing distortion and surface roughness.
(2) According to the empty can-shaped cylindrical grinding wheels K1 to K10, the inner wall surface of the empty can-shaped cylindrical body is lined with a rubber thin film material, and the surface of the rubber thin film material has small holes h1 and diamond abrasive grains and CBN abrasive grains. Alternatively, WA abrasive grains or GC abrasive grains are fixed or kneaded. Furthermore, by adopting a non-woven fabric W woven with diamond abrasive grains etc. instead of the rubber thin film material G, the water pressure of the coolant liquid can pop out from the hole like a balloon grindstone and bulge out, making it possible to perform polishing and lapping. Dramatically improves the surface roughness of the ground surface. As a result, a highly accurate ground/polished surface can be obtained without causing distortion or surface roughness on the ground surface like a balloon grindstone.
(3) When employed in the grinding apparatus 100 that drives the empty can-type cylindrical grinding wheels K1 to K10, the excellent grinding, polishing, and polishing can be performed with unparalleled accuracy and ease.
(4) Further, according to the coolant supply device 50, the pulsating pressure to non-pulsating pressure coolant liquid from the coolant supply device 50 is applied to the empty can type cylindrical grinding wheels K1 to K10, and the NC control program PG from the NC control device 60 Therefore, in addition to the pressure P1 of the single cylinder AC, the pressure P2 of the single cylinder BC, and the combined pressure P3 of both, it is switched to a constant pressure P0 by the accumulator AQ. A variety of delicate grinding and polishing surfaces can be obtained.
(5) Furthermore, according to the manufacturing method of the empty can-shaped cylindrical bodies K1 to K10, although they are manufactured by the classical spinning method, in the manufacturing processes A to G, manufacturing processes A to C by conventional drawing of cylindrical bodies , C1 through the new steps D to G not found. According to the drawing method, thin-walled empty can-shaped cylindrical bodies 10, 20, etc., which have a thin wall and an arbitrary shape, which cannot be obtained by the cutting method or the press working method, can be manufactured on the basis of high productivity.

INDUSTRIAL APPLICABILITY The present invention can be applied to a wide variety of grinding devices and to grinding and lapping using the above empty can type cylindrical grinding wheels K1 to K10. Further, the grinding apparatus 100 for the empty can-type cylindrical grinding wheels K1 to K10 and the method for manufacturing an empty can-type cylindrical body are not limited to the illustrated embodiments. Furthermore, it is applicable to a wide range of embodiments, such as changes related to detailed configurations that result in design changes and changes in usage.

10 Empty can-shaped cylindrical body 10A Peripheral surface 10B Side wall 13 Super abrasive grains 20, 21 Empty can-shaped cylindrical body 20A, 21A Peripheral surfaces 20C, 21C Side wall surfaces 20B, 21B Side wall 50 Coolant supply device 60 NC control device 100 Grinding device M0 Motor T Tank P 2-cylinder plunger pump AC Single cylinder P1 Pressure BC Single cylinder P2 Pressure P3 Combined pressure AQ Accumulator PG NC control program P0 Constant pressure S Rotation shaft S3 Rotation shaft S1 Mounting hole,
SS Vibration sensor h Small hole h1 Small hole L in rubber thin film material Slit hole K1 to K10 Empty can type cylindrical grinding wheel SU Sensor unit HS Heat sensor M Memory R Receiver/transmitter CK Coolant liquid P Plunger pump AQ Accumulator G Rubber Thin film materials V1 to V5 Check valves V6, V7 Switching valve W Non-woven fabric

Claims (6)

The cylindrical body is a thin can-shaped cylindrical body with one side closed, and the empty can-shaped cylindrical body has a mounting hole for a rotating shaft at the center position of the side wall opposite to one side of the empty can-shaped cylindrical body. A large number of small holes or slit holes are provided on the outer peripheral surface, and a center hole for connecting the center-through coolant liquid to the empty can-shaped cylindrical body is opened in the rotating shaft, and the pulsating or non-pulsating pressure from the coolant supply device is provided. In an empty can-shaped cylindrical grinding wheel in which a coolant liquid is supplied into an empty can-shaped cylindrical body to reach a machining point, the inner wall surface of the empty can-shaped cylindrical body is lined with a rubber thin film material, and the surface of the rubber thin film material is lined with diamond abrasive grains. Alternatively, an empty can type cylindrical grinding wheel characterized by having either CBN abrasive grains, WA abrasive grains, or GC abrasive grains fixed thereto. The cylindrical body is a thin can-shaped cylindrical body with one side closed, and the empty can-shaped cylindrical body has a mounting hole for a rotating shaft at the center position of the side wall opposite to one side of the empty can-shaped cylindrical body. A large number of small holes or slit holes are provided on the outer peripheral surface, and a center hole for connecting the center-through coolant liquid to the empty can-shaped cylindrical body is opened in the rotating shaft, and the pulsating or non-pulsating pressure from the coolant supply device is provided. In an empty can-shaped cylindrical grinding wheel in which a coolant liquid is supplied into an empty can-shaped cylindrical body to reach a machining point, the inner wall surface of the empty can-shaped cylindrical body is lined with a rubber thin film material, and the rubber thin film material is lined with diamond abrasive grains or CBN. An empty can type cylindrical grinding wheel characterized by kneading and containing abrasive grains or either WA abrasive grains or GC abrasive grains. The cylindrical body is a thin can-shaped cylindrical body with one side closed, and the empty can-shaped cylindrical body has a mounting hole for a rotating shaft at the center position of the side wall opposite to one side of the empty can-shaped cylindrical body. A large number of small holes or slit holes are provided on the outer peripheral surface, and a center hole for connecting the center-through coolant liquid to the empty can-shaped cylindrical body is opened in the rotating shaft, and the pulsating or non-pulsating pressure from the coolant supply device is provided. In an empty can-shaped cylindrical grinding wheel in which a coolant liquid is supplied into an empty can-shaped cylindrical body to reach a machining point, either diamond abrasive grains, CBN abrasive grains, WA abrasive grains, or GC abrasive grains are applied to the inner wall surface of the empty can-shaped cylindrical body. An empty can-type cylindrical grinding wheel characterized by being lined with a woven nonwoven fabric. The cylindrical body is a thin closed can-shaped cylindrical body, and has a mounting hole for a rotating shaft at the center position of one side surface of the empty can-shaped cylindrical body and the side wall on the opposite side, and one side surface of the empty can-shaped cylindrical body. is provided with a large number of small holes or slit holes, and the rotating shaft is provided with a center hole for connecting the center-through coolant liquid to the empty can-shaped cylindrical body, and the pulsating or non-pulsating coolant liquid from the coolant supply device is supplied. In an empty can-shaped cylindrical grinding wheel that is fed into an empty can-shaped cylindrical body to reach a processing point, the inner wall surface of the empty can-shaped cylindrical body is lined with a rubber thin film material, and the surface of the rubber thin film material is coated with diamond abrasive grains or CBN abrasive grains. An empty can-type cylindrical grinding wheel characterized by having either granules, WA abrasive grains or GC abrasive grains adhered thereto. The cylindrical body is a thin closed can-shaped cylindrical body, and one side surface of the empty can-shaped cylindrical body and the side wall on the opposite side have a mounting hole for a rotating shaft at the center position, and one side surface of the empty can-shaped cylindrical body. is provided with a large number of small holes or slit holes, and the rotating shaft is provided with a center hole that connects the center through coolant liquid to the empty can-shaped cylindrical body, and the coolant liquid with pulsating or non-pulsating pressure from the coolant supply device is supplied into an empty can-shaped cylindrical body to reach the processing point, the inner wall surface of the empty can-shaped cylindrical body is lined with a rubber thin film material, and the rubber thin film material is lined with diamond abrasive grains or CBN abrasive grains Or an empty can type cylindrical grinding wheel characterized by kneading and containing either WA abrasive grains or GC abrasive grains. The cylindrical body is a thin closed can-shaped cylindrical body, and has a mounting hole for a rotating shaft at the center position of one side surface of the empty can-shaped cylindrical body and the side wall on the opposite side, and one side surface of the empty can-shaped cylindrical body. is provided with a large number of small holes or slit holes, and the rotating shaft is provided with a center hole for connecting the center-through coolant liquid to the empty can-shaped cylindrical body, and the pulsating or non-pulsating coolant liquid from the coolant supply device is supplied. A non-woven fabric in which either diamond abrasive grains, CBN abrasive grains, WA abrasive grains, or GC abrasive grains are woven into the inner wall surface of the empty can-shaped cylindrical body in an empty can-shaped cylindrical grinding wheel that is supplied into an empty can-shaped cylindrical body and reaches a processing point. An empty can type cylindrical grinding wheel characterized by lining with

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