JPH045253Y2 - - Google Patents

Description

[Detailed explanation of the invention] Purpose of the invention This invention is a grinding tool that can easily remove burrs generated during cutting of metal products, and also permanently polish metal surfaces using an automatic machine. It is about improvement.

INDUSTRIAL APPLICATION FIELD AND PRIOR TECHNOLOGY When a metal product is cut, more or less cutting debris (burrs) adhere to the cut portion of the metal product. If such burrs remain attached, they will become an extremely large hindrance in the parts assembly process, so it is necessary to completely remove them. However, the burr only needs to be removed; polishing the metal product to which the burr adheres must not deform it to the extent that it cuts it. Many deburring and grinding tools have already been provided under these conditions.

Problems that the invention aims to solve However, when the deburring grinding tool is incorporated into an automatic processing machine and operated, the number of deburring and grinding operations increases dramatically, and a certain level of high speed rotation is also required. Then, the grinding surface, which was formed into a cylindrical shape by converging the grinding wire, gradually deformed into a flat and diffused shape as shown by the reference numeral 60 in Fig. 4, making it difficult to work within a limited range. This not only deteriorates the quality of the grinding process but also causes the position of the grinding surface to be distorted, making it necessary to frequently interrupt the operation of the automatic processing machine to adjust the mounting position of the grinding tool or to replace the tool. .

Means for solving the problem In order to improve the drawback of deformation of the grinding surface of conventional grinding tools, this invention consists of several grinding wires bent into fine waveforms arranged in a flat plate shape, The wires are braided with thin metal wires such as brass or phosphor bronze to form a plate-shaped braided body, and the longitudinal axis of each braided body is oriented in the axial direction of the cylinder, and the longitudinal axis of each braided body is oriented in the width direction. The axis of the cylindrical bundle is radially focused in the radial direction of the cylinder to form a cylindrical shape, one half of the cylindrical bundle is packed into a metal cup, and the center of the cylindrical bundle is placed at the same depth as the metal cup. A long or slightly longer mandrel is inserted and fixed, the rim of the cup is squeezed, a metal wire is wound around the cylindrical bundle near the narrowed rim, and the metal wire is bonded with synthetic resin. The braided body forming the cylindrical bundle is characterized by the fact that the grinding threads are braided with thin metal wires, and pressure for grinding is applied to the grinding threads. Also, even if the metal cup is subjected to high-speed rotation, each of the grinding filaments does not come off the cylindrical bundle, so that the initially formed shape of the cylindrical bundle can be maintained.
It has become possible for automatic processing machines to perform deburring and grinding operations permanently without any adjustments.

Embodiment In the embodiment shown in Figures 1, 2 and 3 of the attached drawings, the material constituting the deburring grinding surface of the deburring grinding tool is a mixture of abrasive grains such as carborundum and alumina oxide in synthetic resin filaments. or a few grinding filaments 1 bent into a fine waveform, such as a bundle of thin metal wires as disclosed in Patent Application Publication No. 1987-127974, for example, in the case of a large tool. Arrange about 5 to 6 filaments, or about 2 to 3 for small ones, in a flat plate shape as shown in Figure 1, and each filament 1, 1... is made of rust-free and highly elastic material such as brass or phosphor bronze. The thin metal wires 2 are braided to form a plate-shaped braided body 10.

The plate-shaped braided body 10 is made into a length suitable for forming the grinding tool shown in FIG. By aligning the lengths and radially converging the longitudinal axes of each braided body 10 in the axial direction of the cylinder and directing the width axes in the radial direction of the cylinder, as shown in FIG. Form into shape. One half of the formed cylindrical bundle is packed into a metal cup 3, and the lip portion 30 of the cup 3 is squeezed to fix the cylindrical bundle to the cup 3 to form a grinding tool.

A cylindrical bundled body is made by inserting a mandrel 4 with a length equal to or somewhat longer than the depth of the metal cup 3 into the center of the cylindrical bundled body, fixing the mandrel 4 to the bottom of the cup, and packing it into the cup 3. In addition, the metal wire 5 is wound several times around the cylindrical bundle above the lip portion 30 of the metal cup 3 to bind the cylindrical bundle, and the bundled metal wire A synthetic resin adhesive is further applied onto the wire 5 to prevent the metal wire 5 from coming off the cylindrical bundle.

Effects of the invention The deburring and grinding tool of this invention has the above-mentioned structure, and the shaft part protruding from the bottom of the metal cup 3 is attached to the processing machine, and the end surface of the cylindrical bundle body is used to cut the metal product. When rubbing the processed part,
Not only can the burrs attached to the processed part be immediately removed, but also the surrounding area where the burrs were attached can be polished.
A plurality of plate-shaped braided bodies 10 are radially converged with the longitudinal axes of each braided body oriented in the axial direction of the cylinder and the widthwise axes oriented in the radial direction of the cylinder. A mandrel with the same length as the depth of the cup or slightly longer is inserted into the center of the bundle packed in the cup, and the rim of the cup is squeezed. Since the metal wire is wrapped around the metal wire and fixed with a synthetic resin adhesive, the fixation of the grinding wire is extremely strong. Even when rotated, the filaments do not deform and diffuse outward due to polishing pressure, centrifugal force, etc. and do not become flattened or fly out from the bundle, and can reliably maintain their initial form from beginning to end.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of abrasive material braid constituting the deburring and grinding tool of the present invention, Fig. 2 is a perspective view of the deburring and grinding tool, Fig. 3 is a partially broken perspective view of the same, and Fig. 4 is a conventional It is a perspective view of a grinding tool. 1 is a filament for grinding, 2 is a thin metal wire for braiding, 3 is a metal cup, 4 is a mandrel, 10 is a braided body, 30 is a lip of the metal cup, and 60 is a grinding surface.

Claims (1)

[Scope of utility model registration request] A number of grinding wires bent into fine wave shapes are arranged in a flat plate, and these wires are braided with fine metal wires such as brass or phosphor bronze to form a plate-like braided body.
By radially converging the plurality of braided bodies so that the longitudinal axis of each braided body is oriented in the axial direction of the cylinder and the widthwise axis of each braided body is oriented in the radial direction of the cylinder,
One half of the cylindrical bundle is packed into a metal cup, and a mandrel with the same length or slightly longer than the depth of the metal cup is inserted into the center of the cylindrical bundle and fixed. A deburring and grinding tool characterized by narrowing the edge, wrapping a metal wire around a cylindrical bundle near the narrowed mouth edge, and fixing the metal wire with a synthetic resin adhesive.