JPH05111816A - Face milling cutter - Google Patents

Abstract

PURPOSE:To provide a face milling cutter which is capable of consecutive roughing and finishing for the cutting surface by means of a single vertical milling machine. CONSTITUTION:A face milling cutter 1 incorporates roughing cutting edges 3 along the inner circumference L1 set on a cutter body 2, and incorporates finishing cutting edges 4 along the outer circumference L2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a face milling cutter (hereinafter referred to as a cutter), and more particularly to a structure for assembling a cutting edge thereof.

[0002]

2. Description of the Related Art Conventionally, during the production of aluminum, a sample is prepared by taking out and hardening a predetermined amount of aluminum in a molten state, and the measurement surface of the sample is cut by a vertical milling machine, followed by emission analysis and the like. The component analysis of the sample is performed by the method of. And when cutting this sample, first, after rough cutting the measuring surface of the sample by the low speed rotation of the cutter with the cutting edge for rough processing, then with the high speed rotation of the cutter with the cutting edge for finishing processing. Furthermore, it is common to perform finish cutting on the measurement surface. The size of the sample is 3
0 to 50 mm, that is, 1 / of the cutter body diameter
It is usually set to about 3 or less.

By the way, in the cutting process, in order to prevent the formation of the constituent cutting edge and to improve the finished state of the cutting surface, it is better to rotate the cutter having the cutting edge attached at a high speed. However, if the cutter is rotated at high speed during rough machining with a large amount of cutting, the cutting edge is easily damaged and the life tends to be shortened. Therefore, in order to avoid such inconvenience, the cutter with the cutting edge for rough machining is rotated at low speed, while after rough cutting is performed, it is measured by the high speed rotation of the cutter with the cutting edge for finishing machining. The surface is finished.

[0004]

However, in the above-mentioned conventional example, a single sample is cut twice,
That is, since it is necessary to perform roughing and finishing respectively, it is necessary to prepare two vertical milling machines that meet the conditions for roughing and finishing in advance, and then cut the sample. Alternatively, if only one stand milling machine can be prepared, it is necessary to replace the roughing cutter and finishing cutter each time the sample is cut, and set the rotation conditions for the stand milling machine. I have to fix it. That is, when cutting such a sample, it takes time to carry the sample between the vertical milling machines and to exchange the cutter.As a result, it is not sufficient for the component analysis to produce the result in the shortest possible time. Is.

The present invention was devised in view of such inconvenience, and an object of the present invention is to provide a cutter capable of successively performing roughing and finishing on a machined surface with a single vertical milling machine. There is.

[0006]

In order to achieve such an object, the cutter according to the present invention has a cutting edge for rough machining mounted on the inner circumference set on the cutter body, while the cutting edge is provided on the outside. It is characterized in that a cutting edge for finishing is attached on the circumference.

[0007]

According to the above construction, with respect to the center position of the cutter body which is attached to the milling shaft of the vertical milling machine and serves as the center of rotation, the rough cutting blade mounted on the inner circumference of the cutter body is used. Since the finishing cutting edges assembled on the outer circumference of the blade are located farther apart, the finishing cutting edges are rougher when the cutter is rotated at a specified speed. It will rotate faster than the cutting edge for machining.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an external perspective view of the cutter according to the present embodiment as seen from the front side thereof, and FIG. 2 is an explanatory view showing its usage state. The reference numeral 1 in these figures
Is a cutter, and this cutter 1 is used when cutting a part to be cut such as a sample 11 for component analysis made of aluminum. The size of the part to be cut by the cutter 1 is about 1/3 or less of the diameter of the cutter body.

The cutter 1 is provided with a cutter body 2 which is attached to a milling shaft 10 of a vertical milling machine (not shown) with this as a center of rotation. Then, along the inner circumference L1 set on the front surface 2a of the cutter body 2, that is, along the inner circumference L1 having a predetermined radius from the center position O of the cutter body 2, a rough alloy made of cemented carbide is formed. A plurality (4 in the figure) of the cutting edges 3 for machining are assembled in a state in which they are equally spaced apart from each other by a predetermined distance.

On the other hand, on the front surface 2a of the cutter body 2, there is set an outer circumference L2 which is concentric with the inner circumference L1 and is located on the outer side, and along the outer circumference L2. Only one finishing cutting edge 4 made of cemented carbide is assembled. Here, the cutting edge 4 for finishing is made to be single in order to reduce a cutting mark appearing on a cutting surface, that is, a so-called revolution mark. Further, if the cutting edge 4 for finishing is made wide, it is possible to reduce so-called tooth marks that also appear on the cutting surface.

Since there is only one cutting edge 4 for finishing, it is conceivable that the cutting edge 4 will wear out faster than the other cutting edges 3. In such a case, a so-called diamond tool is used. You can use it. Alternatively, since the finishing cutting edge 4 is assembled on the outside of the cutter body 2 for easy replacement, it may be replaced early. By the way, in order to assemble the rough cutting edge 3 and the finishing edge 4 into the cutter body 2, it goes without saying that a method such as a so-called blade type or throwaway type is adopted.

Next, the procedure of cutting using the cutter 1 will be described with reference to FIG. First, the cutter 1 is attached to the milling shaft 10 of the vertical milling machine, and then the cutter 1 is rotated at a predetermined speed by rotationally driving the milling shaft 10. Then, with respect to the center position O of the cutter body 2 which is attached to the milling shaft 10 and serves as the center of rotation, the plurality of roughing cutting edges 3 assembled on the inner circumference L1 of the cutter body 2 Also, since the finishing cutting edge 4 assembled on the outer circumference L2 is farther away, the finishing cutting edge 4 has a longer separation distance, so that the roughing cutting edge 3 has a longer distance. It will rotate faster than.

Therefore, after loading the sample 11 from the lower position of the cutter body 2 and raising the sample 11 toward the center position O of the cutter body 2, the sample 11 is further moved. Move toward the outside along the radial direction of. Then sample 11
The measurement surface to be cut is firstly mounted on the cutter body 2 and rough-cut by the rough cutting edge 3 rotating at low speed, and then the cutting edge for finishing processing during high speed rotation. It will be finished by 4.

In the present embodiment, the part to be cut is the sample 11 for component analysis made of aluminum, but the present invention is not limited to this, and its size is 1/3 of the cutter body diameter. Naturally, any soft alloy parts that are made to be less than the above can be applied.

[0016]

As described above, according to the cutter of the present invention, a plurality of roughing cutting edges and a single finishing cutting edge are attached to the cutter body, and the roughing cutting is performed. Since the finishing cutting edge that is installed on the outside of the cutting edge will rotate at a higher speed,
Only one front milling machine to which this cutter is attached can successively perform rough cutting and finish cutting on the part to be cut. Therefore, when this part to be cut is a sample for component analysis,
The measurement surface can be quickly processed, and the result of component analysis can be obtained within a short time.

[Brief description of drawings]

FIG. 1 is an external perspective view of a cutter according to the present embodiment as viewed from the front side thereof.

FIG. 2 is an explanatory diagram showing a usage state thereof.

[Explanation of symbols]

 1 Cutter (Face milling cutter) 2 Cutter body 3 Roughing cutting edge 4 Finishing cutting edge L1 Inner circumference L2 Outer circumference

Claims (1)

[Claims] 1. A cutting edge for roughing is installed along an inner circumference set on a cutter body, while a cutting edge for finishing is installed along an outer circumference thereof. Cutter for face milling.