JPH0717463U - Fluid-filled polishing body - Google Patents

Abstract

(57) [Abstract] [Purpose] A small area of abrasive paper cloth 15, which constitutes the polishing surface of the rotating polishing body 10, regardless of the shape of the surface to be polished,
By simultaneously contacting the surfaces to be polished with an equal pressure, all the surfaces to be polished are evenly provided, and a fluid-sealed polishing body capable of efficient polishing is provided. [Structure] A ring-shaped hard resin plate 12 having a velvet fastener 11 adhered to the upper surface thereof
A nut-shaped flexible tube 13 is provided, and innumerable small abrasive paper cloths 15 are provided on the lower side of the flexible tube 13 directly or through the sponge pads 14 and 24 in the circumferential and radial directions. Then, they are attached in a ring shape with an appropriate gap 17 therebetween.

Description

[Detailed description of the device]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid-filled polishing body, particularly a fluid-filled polishing body suitable for polishing a curved surface to be polished such as a window glass of a vehicle or an aircraft.

(Prior Art) As a conventional polishing body for polishing a curved surface to be polished, for example, polishing abrasive grains are fixed with a binder on a tool plate attached to the tip of a drive shaft of a polishing apparatus. A wire mesh in which a large number of polishing tips are planted is fixed through a cushioning material, and a curved body such as the surface of a braun tube or a polishing body for a flat surface to be polished (for example, SAIKAI Sho 63-41. No. 468), or a synthetic resin base having a mounting shaft that is attached to and detached from the shaft end of the drive motor at the center of the back surface, or a metallic base plate such as aluminum, and a continuous-cell polyurethane foam. -A polishing body with a disc-shaped pad attached to it is mounted on a portable electric motor, etc., driven, and used in combination with a polishing solution containing oxidized silicon abrasive grains, thereby producing an automobile windshield. Abrasive body for polishing such as 2,474 JP) there is.

Further, in order to improve the polishing efficiency and work efficiency in the concave portion and enable stable work, the heads of nuts and bolts should be built in the punched holes formed in the center of the elastic plate. While the elastic plate is attached to the rotary shaft, and a velvet type fastener male on the surface of the elastic plate is provided, a velvet type fastener female is provided on the back surface of the polishing plate so that the elastic plate can be attached to and detached from the elastic plate ( Japanese Utility Model Laid-Open No. 51-135,985), innumerable protrusions are provided on the planar surface of the other side of the substrate with the central portion protruding to one side attached to the rotary shaft, and the substrate can be freely attached and detached. Which is a non-woven fabric in which fibers are aggregated in a three-dimensionally non-oriented manner, and abrasive grains are adhered to only one side of the non-woven fabric to adhere to the substrate. On the adhesion surface, The crossing points are adhered without adhering abrasive grains, and the adhesion surface is such that the fibers do not lose their flexibility. 55-147, 247), the passivation film formed on the surface of the object to be polished by the electrolytic action is removed by the rubbing action of the fan-shaped abrasive, and the convex portions on the surface of the object to be polished are selectively electroeluted. There is also known an electrode tool for electrolytic composite polishing (Japanese Utility Model Publication No. 59-14, 113) for mirror finishing.

(Problems in Prior Art) However, in the polishing body described in Japanese Utility Model Laid-Open No. 63-41468, the polishing apparatus can be designed compactly, the working environment is improved, and the operation management is improved. In addition to the ease of installation, the polishing tips are mounted on the tool dish via the wire mesh as the cushioning material, so due to the good compatibility with the surface to be polished, some implantation error of the polishing tips is allowed. Although it is possible to perform fairly uniform polishing simply by pressing the tool dish against the curved surface to be polished, it requires a wire net with a large number of chips to be planted, which tends to lead to a high cost. When the polishing pressure is adjusted to the convex part of the concave part, the polishing pressure of the concave part is insufficient, and conversely, when the polishing pressure is adjusted to the concave part, the polishing pressure of the convex part is likely to be excessive. Poor efficiency was there.

Further, in the abrasive body described in JP-A-63-212,474, a disc-shaped pad made of an open cell polyurethane foam material is attached to a substrate having a mounting shaft. From the above, the familiarity between the polishing body and the body to be polished such as the windshield of the automobile is improved, and those described in Japanese Utility Model Publication No. 51-135,985 and Japanese Utility Model Publication No. 55-147,247 are By deforming the cushioning material to which the polishing material is attached, the curved surface to be polished can be polished fairly uniformly. Furthermore, the one described in Japanese Utility Model Publication No. 59-14,113 has four blades on the surface of the rotating polishing body. Although the fan-shaped cloth abrasive material of No. 1 has good adaptability to the polishing surface that is curved due to the presence of the cushion material, in all of these, the polishing pressure on the convex portion of the surface to be polished increases while the concave portion The polishing pressure at As a result, the entire curved surface to be polished cannot be polished with the same polishing pressure, which causes uneven polishing and lowers the polishing efficiency.

The present invention has been made in view of the above-mentioned problems in the conventional example, in which a fluid is sealed in the lower surface of a hard substrate which is attachable to and detachable from the drive head at the end of the hollow rotary shaft of the polishing apparatus. A flexible doughnut-shaped flexible tube, and a number of abrasive paper cloths are attached to the lower side of the flexible tube directly or through a sponge pad at appropriate intervals. According to the present invention, it is intended to provide a fluid-filled abrasive body capable of solving the above problems.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a ring-shaped hard substrate 12, 22, 22A having a velvet fastener 11 adhered on the upper surface thereof, on the lower surface thereof. The doughnut-shaped flexible tubes 13 and 23 in which the fluid is enclosed are arranged, and innumerable small-abrasive paper cloths 15 and 55 are provided under the flexible tubes 13 and 23. 65A and 65B are adhered directly or through the sponge pads 14, 24 and 44 with appropriate intervals 16, 17, 56, 57, 66A, 66B, 67A and 67B.

(Operation of the Invention) Since the invention has the above-mentioned structure, the velvet fastener 11 on the upper surface of the hard substrate 12 is attached to the lower surface of the drive head 7 at the lower end of the hollow rotary shaft 4 of the polishing apparatus. After being pressed and attached to the velvet type fastener 8, the polishing paper cloth 15 on the lower surface of the fluid-filled polishing body 10 is brought into contact with the polishing surfaces 70A, 71A, 72A for polishing, and the polishing surface, especially the curved surface. The polishing paper cloth 15 of the fluid-sealed polishing body 10 that abuts the convex portions 71AA and 72AA of the surfaces to be polished 71A and 72A is strongly pressed to retreat to the lower side of the hard substrate 12, and the polishing paper cloth of the same portion. The flexible fluid inside the polishing paper cloth 15 in which the pressurized fluid in the flexible tubes 13B A and 13CA inside 15 comes into contact with other regions, in particular, the recesses 71AC and 72A C of the surface to be polished. Sex tube 13BB, 13C B side The fluid flows to inflate the same, and the contact pressure between the surface to be polished other than the convex portions 71AA and 72AA and the polishing paper cloth 15 that contacts the surface is increased, and as a result, the entire surface of the curved surfaces to be polished 71A and 72A is increased. Polish with uniform polishing pressure.

(Embodiment) An embodiment of the fluid-filled abrasive body according to the present invention will be described below with reference to the accompanying drawings.

(First Embodiment) FIG. 1 is a schematic front view showing a longitudinal section of a main part of a fluid-filled abrasive body according to the present invention, in which the fluid-filled abrasive body 10 is shown. The hollow rotary shaft 4 and the drive head 7 in the driven polishing apparatus 1 are also shown in a vertical section. FIG. 2 is a schematic bottom view of the same fluid-filled abrasive body, and FIGS. 3 to 5 are schematic operation explanatory diagrams of the same fluid-filled abrasive body.

1 to 5, 1 is a polishing device, 1A and 1B are upper mounting plates and a lower mounting frame of the polishing device 1, and 2 is a drive module provided between the upper mounting plate 1A and the lower mounting frame 1B. -3, a drive gear provided at the end of the drive motor 2 shaft- 4, a hollow rotary shaft provided in the upper mounting plate 1A and the lower mounting frame 1B, 5 a driven gear provided in the hollow rotary shaft 4 In −, the driven gear-5 is rotationally driven by the drive gear-3. Reference numeral 6 denotes an air cylinder provided between the upper mounting plate 1A and the lower frame body 1B. When the air cylinder 6 expands and contracts, the lower frame body 1B moves up and down with respect to the upper mounting plate 1A.

Reference numeral 7 is a disk-shaped drive head fixed to the lower end of the hollow shaft rotating shaft 4, 8 is a velvet type fastener provided on a ring on the lower surface of the drive head 7, and 9 is a polishing provided at the center of the hollow rotating shaft 4. A liquid supply pipe 9A is a polishing liquid discharge port at the lower end of the polishing liquid supply pipe 9, and a polishing liquid container (or a cleaning liquid container) (not shown) provided at a proper position around the polishing apparatus 1 is connected to the polishing liquid supply pipe 9 through the polishing liquid supply pipe 9. The supplied polishing liquid (or cleaning liquid) is supplied from the polishing liquid discharge port 9A onto the surface to be polished 70A in an appropriate amount.

Reference numeral 10 denotes a fluid-filled polishing body. The polishing body 10 is pressed against the lower surface of the drive head 7 to be attached thereto, and is removed from the lower surface of the drive head 7 by pulling. 10A is a through hole in the center of the polishing body 10, 11 is a ring-shaped velvet fastener, and this ring-shaped velvet fastener 11 is provided on the upper surface of a hard resin plate 12 as a ring-shaped hard substrate.

A doughnut-shaped flexible tube 13 is attached to the lower surface of the hard resin plate 12, and the flexible tube 13 is filled with gas or liquid as a pressure fluid. Reference numeral 14 denotes a sponge pad which covers the side surface and the lower surface of the flexible tube 13 and whose ring-shaped outer upper surface and inner upper surface are attached to the lower surface of the hard resin plate 12, and the lower surface of the sponge pad 14 Is a plane. 15 is a small-area fan-shaped abrasive paper cloth, and these small-area fan-shaped abrasive paper cloths 15, 15 ... Are small on the plane lower surface of the sponge pad 14 in the circumferential direction and the semi-longitudinal direction. It is attached in a ring shape at intervals 16, 17 ... The small area fan-shaped polishing paper cloth 15 may be configured as a trapezoidal polishing paper cloth having a similar small area.

(Operation of First Embodiment) In this fluid-filled abrasive body 10, the velvet type fastener 11 on the upper surface of the hard resin plate 12 is pressed against the velvet type fastener 8 on the lower surface of the drive head 7 and then attached. The hollow rotary shaft 4 is rotated by the drive motor 2 via the drive gear-3 and the driven gear-5, and is attached to the drive head 7 at the lower end of the hollow rotary shaft 4 via the velvet fasteners 8 and 11. The abrasive paper cloth 15 with a large number of small areas attached to the lower surface of the sponge pad 14 of the abrasive body 10 is brought into contact with the surface 70A to be polished, such as the target curved window glass of a railway vehicle or automobile. At that time, if necessary, the polishing liquid is supplied to the polishing surface 70A from the polishing liquid discharge port 9A at the lower end of the polishing liquid supply / discharge pipe 9 in the hollow rotary shaft 4, and the polishing paper on the lower surface thereof is rotated by the rotation of the polishing body 10. Cloth 15 or the same abrasive paper The cloth 15 and the polishing liquid cooperate to polish.

At this time, if there are curved portions such as convex portions 71AA and 72AA, inclined portions 71AB and 72AB, concave portions 71AC and 72AC, and the like on the polished surfaces 71A and 72A of the objects to be polished 71 and 72A, The polishing paper cloth 15 and the sponge pad 14 that come into contact with the convex portions 71AA and 72AA of the objects to be polished 71 and 72 are pushed upward as shown in both sides of FIGS. The fluid (for example, compressed air) in the flexible tubes 13BA, 13CA located in the inside of the polishing paper cloth 15 (the upper side in FIGS. 4 and 5) in the region facing the recesses 71AC, 72AC of the surface to be polished. The flexible tubes 13BB and 13CB flow to the side to swell, and the polishing paper cloth 15 under the flexible tube 13BB and 13CB abuts the recesses 71AC and 72AC of the surface to be polished via the sponge pad 14 on the lower side of the same. Let it did Therefore, any of the convex portions 71AA and 72AA, the concave portions 71AC and 72AC and the inclined portions 71AB and 72AB of the inclined or curved surfaces 71A and 72A to be polished is polished with substantially the same polishing pressure. Grind with cloths 15, 15 ... at the same time.

If the sealing pressure of the fluid sealed in the flexible tube 13, for example, air is set low, the polishing paper cloth 15 and the surfaces to be polished 70A, 71A, 72A of the fluid-sealed polishing body 10 are set. In particular, the compatibility with the curved or inclined polished surfaces 71AA, 71AB, 71AC, 72AA, 72AB, 72AC is further improved, and the polished surfaces 71A, 72A having curved surfaces with remarkable unevenness are well polished. To enable.

(Shape of Abrasive Paper Cloth) As a shape of the abrasive paper cloth 15 having a small area to be attached to the planar lower surface of the sponge pad 14 of the fluid-sealed abrasive body 10, the shape of the fan-like or base as shown in FIG. In addition to the shape, for example, as shown in FIG. 9, a small area circular abrasive paper cloth 55 is attached to the abrasive body 50, a small area triangular abrasive paper cloth 65A as shown in the upper right portion of the abrasive body 60 in FIG. It can be formed in any shape, including a small-area rectangular polishing paper cloth 65B as shown in the lower left part of the figure.

However, regardless of the shape of the circular abrasive paper cloth 55, the triangular abrasive paper cloth 65A, and the rectangular abrasive paper cloth 65B, the adjacent abrasive paper cloths 55, 65A, 65B are In particular, by ensuring their circumferential spacings 56, 66A, 66B and radial spacings 57, 67A, 67B, the total area of each of the small area abrasive paper cloths 55, 65A, 65B is However, if the reduction is smaller than the total area of the fan-shaped or trapezoidal polishing paper cloths 15, 15 ... Shown in FIG. 2 and a slight decrease in polishing efficiency due to it is unavoidable, the same as above. For this reason, due to the presence of the spaces 56, 57, 66A, 66B, 67A, 67B between the polishing paper cloths 55, 65A, 65B of the polishing bodies 50, 60, the polishing paper cloths 55, 65A, 65B are curved. , Tilt, A fluid-filled abrasive body capable of ensuring good compatibility with the to-be-polished surfaces 71A and 72A having irregularities and the like, and capable of polishing the to-be-polished surfaces 71A and 72A having curvature, inclination, and irregularity with high polishing efficiency. 50, 60 can be provided.

In FIG. 10, a small-area triangular polishing paper cloth 65A is provided on the upper right portion of the polishing surface of the polishing body 60, and a rectangular polishing paper cloth 65B is provided on the lower left portion of the polishing body 60 with a circumferential spacing 66A. , 66B and the gaps 67A, 67B in the radial direction are attached, but the polishing paper cloths 65A, 65B can be attached to the entire surface of the polishing body 60.

(Second Embodiment) FIG. 6 is a schematic longitudinal explanatory view of a main part of a second embodiment of a fluid-filled abrasive body according to the present invention. The same names and reference numerals are used for the parts in common with the first embodiment shown in FIGS.

In FIG. 6, 11 is a velvet fastener provided in a ring shape on the upper surface of a hard resin plate 22 as a flat hard substrate, 13 A is a check valve, 20 is a fluid-filled abrasive body, and 23 is a drain Although it is a nut-shaped flexible tube, the upper side of the flexible tube 23 is opened, and the edge portions 23Aa and 23Ba thereof are adhered to the lower surface of the hard resin plate 22, thereby making the same rigid tube. The lower surface of the resin plate 22 and the upper surface of the flexible tube 23 form a fluid sealing chamber 23D. Reference numeral 24 is a sponge pad arranged below the flexible tube 23, 15 is an abrasive paper cloth, 17 is an adjacent abrasive paper cloth 15, 15 ... Interval, and 70 is an object to be polished.

Reference numeral 13A is a check valve provided at the end of the hard resin plate 22, and a fluid sealing chamber constituted by the flexible tube 23 and the hard resin plate 12 via the check valve 13A. The air pressure to be filled into the inside of 23D is adjusted, and the hardness of the fluid-filled abrasive body 20 can be increased or decreased and adjusted. The other structure and operation are almost the same as those of the first embodiment.

(Third Embodiment) FIG. 7 is a schematic longitudinal explanatory view of an essential part of a third embodiment of the fluid-filled abrasive body according to the present invention. In addition, the same names and the same reference numerals are used for the parts common to the first embodiment shown in FIGS.

In FIG. 7, 30 is a fluid-filled abrasive body, 11 is a velvet type fastener provided in a ring shape on the upper surface of the hard resin plate 12 of the fluid-filled abrasive body 30, and 13 is a donut-shaped flexible tug. The reference numeral 15 designates a small area of abrasive paper cloth, and 17 designates the radial distance between adjacent abrasive paper cloths 15. The circumferential direction of the abrasive paper cloth 15 is the same as the distance 16 in the first embodiment. Secure the space.

The fluid-filled abrasive body 30 has the innumerable small area abrasive paper cloths 15 and 15 directly attached to the lower side of the donut-shaped flexible tube 13 in that the first, The fluid-filled abrasive bodies 20 and 30 of the second embodiment have sponge pads 14 and 24 interposed between the lower side of the flexible tube 13 and an infinite number of small area abrasive paper cloths 15 and 15. Contrary to this, the fluid-filled abrasive body 30 of this third embodiment and the surface to be polished 70, in particular, the inter-surface surfaces 71AB and 72AB that are curved or inclined (see FIGS. 4 and 5). Familiarity of is further improved.

Reference numeral 13A is a check valve provided at the end of the hard resin plate 12 and is flexible by adjusting the air pressure sealed in the flexible tube 13 via the check valve 13A. The hardness of the tube 13 is changed to adjust the hardness of the polishing portion of the polishing body 30. The other structure and operation are almost the same as those of the first embodiment.

(Fourth Embodiment) FIG. 8 is a fragmentary explanatory view of a fourth embodiment of a fluid-filled abrasive body according to the present invention. In addition, the same names and reference numerals are used for the portions common to the first embodiment shown in FIGS.

In FIG. 8, 11 is a velvet type fastener stuck in a ring shape on the upper surface of a flat hard resin plate 22A, 13 is a donut-shaped flexible tube, 13A is a check valve, 44A Is a donut-shaped hollow portion provided in the central portion of the sponge pad 44, and the donut-shaped flexible tube 13 is inserted into the hollow portion 44A and is inserted via the check valve 13A. Air is pumped and enclosed in the flexible tube 13.

Reference numeral 15 designates a small area of abrasive paper cloth, which is affixed innumerably to the planar lower surface of the sponge pad 44, and the adjacent abrasive paper cloth 15, 15 ... And the radial interval 17 are secured. If the outer diameter of the sponge pad 44 to which the polishing paper cloth 15 is attached is set to be slightly larger than the outer diameter of the hard resin plate 22 A, the shape of the sponge pad 44 to which the polishing paper cloth 15 is attached will be deformed. This is also possible in the direction in which the edge portion 22Aa of the hard resin plate 22A is crossed, and the polishing efficiency can be further improved in the corner portion and the like.

The donut-shaped flexible tube 13 of the fluid-filled abrasive body 40 of the fourth embodiment is housed in the donut-shaped hollow portion 44 A of the thick plate-shaped sponge pad 44. The entire surface is protected by the sponge pad 44. The other structure and operation are almost the same as those of the first to third embodiments.

(Effects of the Invention) Since the invention has the above-described configuration and operates, the following effects can be obtained.

(1) An infinite number of small areas of abrasive paper cloth 15, 55, 65A, 65B are provided on the lower surface of the hard substrate 12 via a doughnut-shaped flexible tube 13, 23 containing a fluid. Since the layers were adhered in a ring shape with appropriate intervals 16, 17, 56, 57, 66A, 67A, 66B, 67B between each other, starting from the flat surface to be polished 70A, the uneven portion, the curve, the inclination. The polishing paper cloths 15, 55, 65A, 65B having a small area of the fluid-filled polishing bodies 10 to 60 on the polishing surfaces 71A, 72A, etc. to be polished are uneven or uneven on the polishing surfaces 70A, 71A, 72A. The contact pressures at the parts are also the same, and the entire surface to be polished can be polished with the same polishing pressure. Therefore, for example, uniform and efficient polishing without unevenness where the high side is excessively polished can be performed. A fluid-filled abrasive body can be provided.

(2) Countless abrasive paper cloths 15 are directly adhered to the lower side of the doughnut-shaped flexible tube 13 adhered to the lower side of the hard substrate 12 at appropriate intervals. If the fluid-filled abrasive body 30 is configured by such a method, the curvature of the surfaces to be polished 71A, 72A that is curved, inclined, or the like, and the change in the degree of inclination, etc., can be directly applied to the doughnut-shaped flexible cloth through the abutting abrasive paper cloth 15. Is transmitted to the lower wall of the flexible tube 13, the flow of the fluid in the flexible tube 13 is promoted, and as a result, the polishing paper cloth 15, 15 ... Which constitutes the polishing surface of the polishing body 30. With this, the conformability with the surfaces to be polished 71A, 72A that are curved or inclined is improved, and the polishing efficiency is further improved.

(3) If a check valve 13A for adjusting the fluid pressure enclosed in the doughnut-shaped flexible tubes 13 and 23 is provided, the hardness of the polishing surface of the same polishing body 10 to 60 can be changed. Therefore, it becomes easier to provide the fluid-filled abrasive bodies 10 to 60 that appropriately correspond to the surfaces to be polished 71A, 72A having different curvatures, inclinations, and irregularities.

(4) Innumerable small-sized polishing paper of appropriate shape is formed on the lower surface of the ring-shaped hard substrate 12 of the polishing bodies 10 to 60 via the doughnut-shaped flexible tubes 13 and 23. Fluids 15, 55, 65A, 65B are adhered at appropriate intervals 16, 17, 56, 66A, 67A, 66B, 67B in the circumferential and radial directions to form fluid-filled abrasive bodies 10-60. Therefore, a large range of deformation of the polishing surface of the polishing body can be easily provided by selecting the size, the wall thickness, the content area and the like of the doughnut-shaped flexible tubes 13, 23.

(5) If the outer diameters of the donnut-shaped flexible tube 13 and the sponge pad 44 are set to be slightly larger than the outer diameter of the hard substrate 22A, the flexible tubes 13 and 23 are formed. Also, the deformation range of the sponge pad 44 becomes large, and even the square corner or the like can be polished by the fluid-filled polishing body 40.

(6) By selecting the fluid pressure to be sealed in the flexible tubes 13 and 23, the contact pressure of the fluid-filled polishing bodies 10 to 60 to the surfaces to be polished 70A, 71A, 72A is applied. Since it can be set to the optimum one corresponding to the material of the objects to be polished 70, 71, 72, for example, even for railway cars, automobiles, aircrafts, and other curved window glass It is possible to provide the polishing bodies 20 to 60 that can easily perform polishing with an appropriate uniform contact pressure.

(7) The movement of the fluid enclosed in the doughnut-shaped flexible tubes 13 and 23 not only causes the polishing surfaces of the fluid-filled abrasive bodies 10 to 60 to be largely displaced, but also the displacement. Since the contact pressure with the polishing surface before and after is substantially the same, it does not depend on the direction of the polished surfaces 71A, 72A that are curved or inclined, and between the polishing body 10 to 60 and the drive shaft (hollow rotating shaft). Thus, it is possible to provide a polishing body that can be reasonably polished by a simple operation that does not change the axial direction of the drive shaft without interposing a universal joint or the like.

(8) A velvet fastener in which a ring-shaped velvet fastener 11 attached to the upper surface of the hard substrate plate 12 is attached in a ring shape to the lower surface of the drive head 7 at the lower end of the drive shaft 4 of the polishing apparatus. The polishing bodies 10 to 60 can be easily mounted by simply pressing them to the surface 8, and the polishing bodies 10 to 60 mounted on the polishing head 7 can be easily removed by pulling them downward.

[Brief description of drawings]

FIG. 1 is a schematic vertical cross-sectional explanatory view of a first embodiment of a fluid-filled abrasive body according to the present invention, along with its drive unit, in which essential parts are longitudinally cut.

FIG. 2 is a schematic bottom view of the fluid-filled abrasive body of the first embodiment.

FIG. 3 is an explanatory view of a schematic polishing procedure of a planar object to be polished by the fluid-filled abrasive body of the first embodiment.

FIG. 4 is a schematic illustration of a polishing procedure for an object to be polished having a curved surface according to the first embodiment of the fluid-filled abrasive body according to the present invention.

FIG. 5 is a schematic explanatory drawing of a polishing procedure for an object to be polished having curved surfaces of different shapes according to the first embodiment of the fluid-filled abrasive body according to the present invention.

FIG. 6 is a schematic vertical cross-sectional explanatory view of the essential parts of a second embodiment of the fluid-filled abrasive body according to the present invention.

FIG. 7 is a schematic longitudinal explanatory view of a third embodiment of the fluid-filled abrasive body according to the present invention.

FIG. 8 is a schematic longitudinal explanatory view of a fourth example of the fluid-filled abrasive body according to the present invention.

FIG. 9 is a schematic bottom view of the fluid-filled abrasive body to which the small circular polishing cloth is attached in the fluid-filled abrasive body according to the present invention.

FIG. 10 shows a fluid-filled abrasive body according to the present invention,
It is a model bottom surface explanatory view of the grinding | polishing body which stuck the triangular-shaped and square-shaped polishing paper cloth partially.

[Explanation of symbols]

1 ... Polishing device 4 ... Hollow rotating shaft 7 ... Drive head 8, 11 ... Velvet type fastener 10, 20, 30, 40, 50, 60 ... Fluid-filled polishing body 12, 22, 22A ... Hard resin Plate (hard substrate) 13, 23 ... Flexible tube 13A ... Check valve 14, 24, 44 ... Sponge pad 15 ... Abrasive paper cloth (fan-shaped) 16, 17 ... Spacing of abrasive paper cloth 44A ... Donut-shaped space 55, 65A, 65B ... Abrasive paper cloth (circle, triangle, quadrangle) 56, 66A, 66B, 67A, 67B.

Claims (3)

[Scope of utility model registration request] 1. A doughnut-shaped flexible tube 13, 23 containing a fluid is provided on the lower surface of a ring-shaped rigid substrate 12, 22, 22A having a velvet fastener 11 adhered on the upper surface thereof. At the same time, innumerable small abrasive paper cloths 15, 55, 65A, 65B are provided under the flexible tubes 13, 23 with appropriate intervals 16, 17, 56, 57, 66A, 66B, 67.
A or 67B, direct or sponge pad 14, 2
A fluid-filled abrasive body characterized in that it is adhered via 4, 44. 2. The ring-shaped rigid substrates 12, 22, 22
Donut-shaped flexible tubes 13 and 2 provided on the lower side of A
3, 33 and 33, the donut-shaped flexible tutu
Check valve 1 for fluid pressure adjustment enclosed in the bushes 13, 23, 24
The fluid-filled abrasive body according to claim 1, wherein 3 A is provided. 3. A velvet type fastener 11 engaging with a velvet type fastener 8 on the lower surface of a plate-shaped drive head 7 provided at the lower end of the hollow rotary shaft 4 of a polishing device is attached to the upper surface of a ring-shaped hard substrate 12, and The upper surface of a thick plate-shaped sponge pad 44 having a donut-shaped hollow portion 44A is attached to the lower surface of the ring-shaped hard substrate 12, and the donut-shaped hollow portion 44A of the plate-shaped sponge pad 44 is attached. A doughnut-shaped flexible tube 13 in which a fluid is enclosed is embedded, and the planar lower surface of the plate-shaped sponge pad 44 has an infinite number of small areas of abrasive paper cloth 15, 55, 65A, 65B. The interval 1
6, 17, 56, 57, 66A, 67A, 66B, 67
A fluid-filled abrasive body characterized in that B is attached in a ring shape.