JPH0321854Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applied to a cutter for removing burrs that occur on cut edges of steel plates.

[Conventional technology]

When shearing a metal plate such as a steel plate, the occurrence of burrs at the sheared edges is generally unavoidable. This burr reduces the product value, etc.
Must be removed before shipping.

In addition to grinders, deburring methods include
A disc-shaped cutter 50 as shown in FIG. 9 is arranged at an angle with respect to the material M as shown in FIG. A support shaft that is orthogonal to each other is a rotating shaft 2, which is rotated by a motor 3, etc., and the motor 3 is connected to a cylinder 4.
The cylinder 4, motor 3 and the entire cutter are moved in the direction penetrating the plane of the paper in Figure 2 while applying a pressing force F by constantly acting on the rod in the direction of contraction. This is what I did.

[Problem that the invention attempts to solve]

However, with the conventional cutter mentioned above, burr chips are continuously generated, and these chips get wrapped around the rotating shaft or caught between the material (plate) and the cutter, making it difficult to dispose of the chips. Deburring workability is poor.

Therefore, the main purpose of the present invention is to provide a cutter that can shred chips and has excellent deburring workability.

[Means for solving problems]

The present invention to solve the above conventional problems is as follows:
A linear continuous burr on the edge of the material is removed by moving it relatively in the longitudinal direction of the burr, so that the burr forms a substantially disk shape and the orthogonal axis passing through its center is the rotation axis. The cutter is characterized by having one or more independent outer cutters that are independent in the circumferential and radial directions on the outer periphery, and a continuous inner cutter continuous in the circumferential direction on the inner periphery.

[Effect]

In the present invention, the outer cutter removes and divides the burr in the middle of its longitudinal direction. The inner blade cuts and removes the middle part of the divided burr. Therefore, the burrs removed by the inner cutter are short because they have been divided by the outer cutter in advance, and fall smoothly as they are. This will prevent you from getting caught up in the

〔Example〕

The present invention will be explained in more detail below with reference to embodiments shown in the drawings.

1 to 3 show a first embodiment, and FIGS. 4 and 5 show how burrs are removed by a cutter according to the first embodiment.

As shown in FIG. 2, the cutter 1 according to the first embodiment is attached to the rotating shaft 2 in the same way as the conventional single-blade cutter 50. The cutter 1 is approximately disk-shaped, and a rectangular outer cutter 11, for example, protrudes upward from the upper surface of the periphery (in FIG. 1). The outer cutter 11 has, for example, 8 in the circumferential direction.
They are individually protruded. The inner periphery of the cutter 1 has a cylindrical shape and protrudes toward the upper surface, and its periphery serves as an inner cutter 12 for deburring. Reference numeral 13 is a hole for attachment to the rotating shaft and is provided with a keyway.

When deburring, the cutter 1 intersects the surface of the material M and the surface of the cutter 1 at an appropriate angle θ below the burr m of the material M, and also removes the material M from the burr m. The cutter 1 is rotated via the rotating shaft 2 while being moved in the longitudinal direction. At this time, when viewed from the right side of FIG. 3, it is preferable that the cutter 1 be inclined downwardly at an appropriate angle α from the upstream side to the downstream side of the material M.

By doing this, the outer cutter 11 first hits the burr m of the material M as it rotates, and cuts and removes the burr m. Next, as the material M moves, the inner cutter 12 moves against the burr m on the upstream side of the cutting part _m0 .
started to hit, and as the material M moved,
The inner cutter 12 sequentially cuts and removes the area up to the next cutting part _m0 to produce chips m'.

Here, the moving speed of the material M, the rotation speed of the cutter, the circumferential distance between the outer cutters 11, 11, the outer cutter 11,
By appropriately selecting the distance between the inner cutter 12 and the inner cutter 12, the length of the chips m' can be selected.

FIG. 5 shows an example of a cutting line l ₁ by the outer cutter 11 and a cutting line l ₂ by the inner cutter 12.

On the other hand, the outer cutter and inner cutter are not limited to be formed on the upper surface, but may also be formed on the lower surface as shown in FIG. In this case, when the upper surface is worn out, the outer cutter 11 and the inner cutter 12 on the lower surface can be turned over and used as processing cutters, and at the same time, the two target surfaces can be burred by the upper and lower surfaces. It can also be processed.

Further, as shown in FIG. 7, the outer cutter may be located intermittently on different concentric circles from the center of the cutter. In this case, the first outer cutter 11A on the outside and the second outer cutter 11B on the inner side can form two cutting portions by crossing the burr m once. Note that the first outer cutter 11A and the second outer cutter 11B do not have to be along the same radial direction, but may be staggered.
Moreover, the outer cutter 11 does not have to follow the same circle, but may follow a spiral line, for example. Furthermore, as shown in Fig. 8, the outer blade 1 extends outward.
It may be 1'.

[Effect of idea]

As described above, according to the present invention, after the burr is divided by the outer cutter, the remaining part can be removed by the inner cutter, so the burr chips are shortened and can be removed smoothly, making the work easier. is significantly improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the cutter according to the first embodiment of the present invention, Fig. 2 is a front view of the cutter in use, Fig. 3 is a perspective view thereof, Fig. 4 is a perspective view of the cutter in deburring state, and Fig. 5 is a perspective view of the cutter in a state of deburring. An explanatory diagram of an example of the cutting line position by the outer cutter and the inner cutter, FIGS. 6 and 7 are cross-sectional views of cutters of other examples,
FIG. 8 is a perspective view of still another example, and FIG. 9 is a perspective view of a conventional cutter. 1... Cutter, 2... Rotating shaft, 11, 11',
11A, 11B...Outer blade, 12...Inner blade.

Claims (1)

[Scope of utility model registration request] A linear continuous burr on the edge of the material is removed by moving it relatively in the longitudinal direction of the burr, and the orthogonal axis passing through the center of the burr is substantially in the shape of a disk and is the rotation axis. A deburring cutter comprising one or more independent outer cutters that are independent in the circumferential and radial directions on the outer periphery, and a continuous inner cutter continuous in the circumferential direction on the inner periphery.