JPS5840219A - Chamfering method and rotary disc cutter - Google Patents

Abstract

PURPOSE:To improve productivity of a product, by providing a cutting edge in an outer edge part of a main surface, crossing at a right angle with the rotary shaft of a cutter, forming an inner side of the main surface of the cutter to a flank and forcibly contacting the cutter main surface to the edge part of a work. CONSTITUTION:At chamfering work, a rotary disc-shaped cutter 1 is rotated around its rotary shaft, and a cutting edge surface 6 is forcibly contacted to an edge of a work and relatively moved for the work. The cutting edge surface 6 of the cutter, being a plane crossing at a right angle with the rotary shaft of the rotary disc unit 1, can be forcibly contacted to the edge part of the work in wide area. This machining is performed without relieving clearance, and the edge part of the work is not bitten by a cutting edge 3, then burring and chamfering of a certain small dimensional width can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotating disc-shaped cutter suitable for removing webs and deburrs from steel plates and the like.

Surface *b for the workpiece, end face processing such as deburring,
Usually, this is done using a grinding belt, grindstone, cutter, brush, etc., but if the workpiece is a thin plate, the workpiece is processed by a method other than machining, or the feed speed of the workpiece is If the cutting speed is too fast, it is difficult to use copying equipment, etc., and the machining width tends to be large, and abrasive grains or brushes may adhere to the workpiece, resulting in cutting that is performed in a subsequent process.

It may interfere with processing such as assembly.

The present invention has been made based on the above-mentioned circumstances, and includes providing a cutting edge on the outer edge of the main surface perpendicular to the rotation axis of the rotating disc-shaped body,
By bringing the main surface of the fixed rotary disk-shaped cutter in close contact with the workpiece, with the inner side defined by the cutting blade as a relief surface, chamfering 9. The purpose of this invention is to speed up end face processing such as deburring 9, and to provide a rotary disk-shaped cutter suitable for use in this method.

Hereinafter, the present invention will be explained based on examples with reference to the drawings.

As shown in FIGS. 1 and 2, the rotating disc-shaped cutter used in the method of the present invention is orthogonal to the rotation axis of a rotating disc-shaped body (1) made integrally of a cutting material, for example, tool steel. A blade (3) is formed at the boundary between the main surface, which is a flat surface, and the outer circumferential surface (2) of the rotating disc-shaped body (1). Therefore, leaving a certain width dimension from this blade (3), a protruding cutting edge part (41) is provided on the main surface that is more recessed than other parts.
5) is constructed. Therefore, the cutting edge surface (6) of this cutting edge portion (5) constitutes the above-mentioned main surface and is a flat surface. Although the cutting edge portion (5) is shown as having an annular shape in the figure, it may be formed in other shapes such as a bucket shape. Further, a shaft hole (7) penetrating through the overload (4) is bored in a boss portion provided at the center of the other surface of the rotating disc-shaped body (1), and a key groove is formed in this shaft hole (7). (8) and a screw hole (9) are provided so that the rotating disc-shaped body (1) is attached and fixed to a rotating shaft (not shown). In addition, in Fig. 2, the cutting edge surface (6) and the outer peripheral surface (2) intersect at an obtuse angle to form the blade (3), but both surfaces 16) +21 are orthogonal (3a (Fig. 3b) or at an acute angle (Fig. 3b).

In the chamfering method, a rotary disk-shaped cutter is rotated about its rotation axis, and the cutting surface (6) is pressed against the edge of the workpiece to move relative to the workpiece.

When the chamfering method is configured in this way, the cutting edge surface (6) of the cutter forms a plane perpendicular to the rotation axis of the rotating disc-shaped body (1), so that the edge of the workpiece is Can be pressure-welded over a wide area. In other words, since this processing is a process without a second counter, the blade (3) does not dig into the edge of the workpiece and removes a constant size with a small width.

It can be chamfered. At this time, excessive amount (4) reduces the friction area with the workpiece and causes the blade to droop.
It has the effect of keeping sharpness for a long time. In addition,
This process uses the acute-angled one of the various blades (3) mentioned above.The bite into the machining part is large, and the more obtuse the angle, the smaller the biting. ) is determined by taking into consideration the biting into the workpiece.

Next, as a second embodiment of the rotary disk-shaped cutter, as shown in Fig. M4, a nine-rotation disk-shaped cutter (
In 1), an annular notch αυ having a constant depth is formed on the outer peripheral portion of the plane, which is one surface perpendicular to the rotation axis. This notch I! A circular cutting blade member (5) made of a cutting material such as tool steel, which is higher than the depth of this notch (tJI) and harder than mild steel, is brazed to aυ, and its outer edge touches the blade (3). None, and the plane of the rotating disc-shaped body (1) defined by the cutting blade member (5) forms an excess (4). The cutting surface (6) of the cutting member (5) is thus planar and protrudes from the excess. Note that the cutting edge surface (6) and the outer circumference ffi
The angle of intersection with (2) and the structure of the rotary shaft mounting portion are the same as those of the embodiment described above. With this configuration, a cutter material can be used only for the cutting blade member (5), so a high-quality cutter can be manufactured at a relatively low cost. Incidentally, the cutting blade member (5) may be attached to the rotating disc-shaped body (1) by mechanical coupling using bolts or the like.

Next, as a third embodiment of the rotary disk-shaped cutter, as shown in FIG.
An annular groove Qυ having a constant depth is formed near the outer edge of the plane that is one of the surfaces perpendicular to the rotation axis in 1). An annular cutting blade member (5) made of a cutting material such as tool steel, which is higher in depth than the annular groove C11) and harder than mild steel, is press-fitted into this annular noυ, and its outer edge is shaped like a blade (3). ), and is defined by the cutting blade member (5) and has a nine-disc plate-like body (1).
1,000 ryo constitutes an excess (4). Thus, the cutting blade member (5
) has a flat cutting surface (6) and protrudes from the excess (4). The angle at which the cutting edge surface (6) intersects with the outer circumferential surface (2), the structure of the rotary shaft mounting portion, etc. are the same as those of the T period embodiment.

With this configuration, it becomes easy to provide a plurality of cutting blade members with different aggressiveness, and it becomes difficult to generate machining residues.

Next, as a fourth embodiment of the rotary disk-shaped cutter, as shown in FIG.
is removably attached to the rotating disc-shaped body (1) via a disc-shaped sub-plate 6υ and screws (2).

(4) is an excess portion, and the Toυ cutting surface (6) is flat and protrudes from the excess portion (4). Cross-sectional shape in Figure 7! A cutting blade member (5) formed in an annular shape is removably attached to the rotating disc-shaped body (1) K via a disc-shaped sub-grate 6 with screws (2). (4) is an oversized portion, and the cutting edge surface (6) is flat and protrudes from the oversized portion (4).

With these configurations, the cutting blade member (5) can be easily attached to and removed from the rotating disc-shaped body (11), and the blade (3) can be provided on both the outer and inner edges of the cutting blade member (5). can.

As described in detail above, the present invention provides a rotating disc-shaped cutter in which a cutting blade is provided on the outer edge of the main surface perpendicular to the rotational axis of a rotating disc-shaped body, and the inner side defined by the cutting blade is overfilled. Because the main surface of the workpiece is pressed against the edge of the workpiece, the chamfering process becomes a process without a second corner, and the processing width is small and does not twist too much, and the processing width is small and has a constant size. It is possible to perform chamfering processing. Additionally, the excess amount reduces the area of friction between the blade and the workpiece, making the blade less likely to sag, allowing it to maintain its sharpness for a long time. Furthermore, since foreign substances such as abrasive grains and brushes do not adhere to the workpiece, subsequent operations such as cutting and assembly become easier, and the productivity of products to which this processing field belongs can be greatly improved.

In addition, if the cutting edge is formed into an annular shape and a blade is also formed on the inner peripheral edge of the cutting edge, processing will be performed on this inner edge as well, making it possible to more completely chamfer and burr. Can be done. In addition, since the cutting blade, the rotary disk-like body, and the metal are made of materials with different hardness, only the cutting blade member needs to have a high hardness, so it is possible to make a cutter with a good quality without increasing the cost too much. Can be done. Furthermore, the cutting blade is removably attached to the rotating disc-shaped body via the sub-plate, which allows the cutting blade to be replaced in an extremely short time during chamfering and deburring. , self-manufacturability is improved by reducing the non-processing time of the deburring device.

As described above, the rotating disc-shaped cutter of the present invention is extremely suitable for chamfering.

It should be noted that the present invention is not limited to the above-mentioned embodiments (
It goes without saying that various changes can be made without departing from the gist of the invention.

[Brief explanation of the drawing]

The drawings show an embodiment of the rotary disk-shaped cutter of the present invention, in which Fig. 1 is a plan view, Fig. 2 is a sectional view taken along the plane 1-1m in Fig. 1, and Figs. The sectional views of partially modified examples in the figure, #I4 to 1g7, are partially cutaway sectional views of other embodiments. 1...Rotating disc-shaped body 4...Relief 5...
Cutting blade 6...Cutting surface 31 constituting the main surface...Sub-plate agent Patent attorney Nori Chika 3I Yu (Haka 1 person) Figure 1 Boiled Figure 2 Yu Figure 5 a-ri Figure 4- 1 Figure 6 ζ Figure 7 Jl, ? J 65jj (108

Claims (4)

[Claims] (1) A cutting blade is provided at the outer edge of the main surface perpendicular to the rotational axis of the rotating disc-shaped body, and the main surface of the rotating disc-shaped cutter is heated by liquid cutting, with the inner side defined by the cutting blade being a relief surface. ]: A chamfering method characterized by applying pressure to the edge of an object. (2) A rotating disc-shaped cutter characterized in that a cutting blade is provided on the outer edge of the main surface perpendicular to the rotation axis of the rotating disc-shaped body, and the inner side defined by the cutting blade is a relief surface. . (3) A rotary disc-shaped cutter according to item 2 of the scope of Patent No. 1, characterized in that the cutting blade and the rotating disc-shaped body are formed of members having different hardnesses. (4) A rotary disc-shaped cutter according to claim 3, characterized in that the cutting blade is attached to the rotating disc-shaped body via a detachable sub-plate.