TWM543127U - Milling cutter with asymmetric blade - Google Patents

Description

Asymmetric blade milling cutter

This creation relates to a milling cutter for forming a groove or the like.

The milling cutter is a rotary cutter installed on a milling machine and used for various processing. The milling cutter has various types according to the appearance or its function. The milling cutter for forming the groove has a plurality of cutting edges, and each cutting edge spiral Extending up and down, and forming a spiral extending chip flute between any two adjacent cutting edges; in use, the milling cutter is rotated at a certain speed and laterally moved on the workpiece to cut out grooves of various shapes.

However, in the aforementioned milling cutter for forming a groove, the cutting edge is usually symmetrically arranged. Specifically, the conventional milling cutter has four cutting edges which are rotationally symmetrical with respect to the central axis of the milling cutter, in other words, the milling cutter. At the tip of the tip, the angle between the adjacent two blades is 90 degrees; however, such a symmetrical arrangement is not an optimum design, but instead causes the blade to collapse easily when used, so the prior art milling cutter needs to be improved.

In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an asymmetric blade milling cutter which can effectively prevent the blade from collapsing and prolong the service life.

In order to achieve the above-mentioned creative purpose, the technical means adopted in the present invention is to design an asymmetric blade, which comprises four blades, each of which extends in a spiral shape, and a chip flute is formed between any two adjacent blades. The flutes also extend helically, which are asymmetrical from the tip of the milling cutter.

Further, the asymmetric cutting edge milling cutter, wherein the four cutting edges sequentially have four included angles with the axis of the milling cutter as an axis, and the angles of the four included angles are different.

Further, the asymmetric cutting edge milling cutter, wherein the four cutting edges sequentially sandwich four angles, wherein two of the angles at the opposite angles are greater than 90 degrees, and the remaining two angles at the opposite angles are smaller than 90 degrees.

Further, the asymmetric cutting edge milling cutter, wherein the four included angles are a first angle, a second angle, a third angle, and a fourth angle; the first angle is between 100 degrees Up to 104 degrees; the second angle is between 83 degrees and 87 degrees; the third angle is between 94 degrees and 98 degrees; the fourth angle is between 75 degrees and 79 degrees.

Further, the asymmetric cutting edge cutter has a first angle of 102 degrees; the second angle is 85 degrees; the third angle is 96 degrees; and the fourth angle is 77 degrees.

The advantage of this creation is that by making the asymmetric design of the four cutting edges and the specific angle range thereof, the cutting edge collapse can be effectively avoided during use, thereby achieving the purpose of extending the service life of the milling cutter.

The technical means adopted by the present invention for achieving the intended purpose of creation are further explained below in conjunction with the drawings and the preferred embodiment of the present invention.

Referring to FIG. 1 and FIG. 2, the asymmetric cutting edge cutter 10 of the present invention comprises four cutting edges 11, each of which has a spiral extending up and down, and a spiral extending between two adjacent cutting edges 11 is formed. The chip flutes 12, in other words, the four cutting edges 11 form a total of four flutes 12; the cutting edges 11 are asymmetrical from the tip end of the milling cutter 10.

By creating the asymmetric design of the four blades 11, the creation can effectively prevent the blade 11 from collapsing to achieve the purpose of prolonging the service life.

In addition, the four cutting edges 11 sequentially sandwich four angles with the axis L1 of the milling cutter 10 as an axis. The angle here refers to the tip end 111 of the adjacent two cutting edges 11 from the tip end of the milling cutter 10. In the present embodiment, the angles of the four included angles of the four cutting edges 11 are different, but not limited thereto, so that the angles of the portions may be the same, only The four blades 11 can be made asymmetrical.

In this embodiment, the angle between the two opposite angles is greater than 90 degrees, and the remaining two angles at the opposite angles are all less than 90 degrees. For example, the four included angles are a first angle θ1 and a second angle θ2. a third angle θ3 and a fourth angle θ4, the first angle θ1 and the third angle θ3 are two angles at a relative angle, and the second angle θ2 and the fourth angle θ4 are also two angles at a relative angle; However, not limited thereto, the adjacent two angles are greater than 90 degrees, and the remaining adjacent two angles are less than 90 degrees, or only one of the angles is greater than 90 degrees, or only one of them The angle is small by 90 degrees, etc., and only four blades 11 are asymmetrical, so that the blade 11 can be prevented from collapsing.

Specifically, the preferred angle range of the included angles is as follows, the first angle θ1 is between 100 degrees and 104 degrees, and one of the first angles θ1 is preferably 102 degrees; the second angle θ2 is between 83 degrees. Up to 87 degrees, and one of the second angles θ2 is preferably 85 degrees; the third angle θ3 is between 94 degrees and 98 degrees, and one of the third angles θ3 is preferably 96 degrees; the fourth angle θ4 Between 75 degrees and 79 degrees, and one of the fourth angles θ4 is preferably 77 degrees; in the foregoing preferred range, the blade 11 collapse can be most effectively avoided to most effectively extend the service life of the milling cutter; The angles of the milling cutters of this creation are not limited to this, and only four blades 11 are asymmetrical, and a certain effect can be exerted.

The above description is only a preferred embodiment of the present invention, and does not impose any form limitation on the present invention. Although the present invention has been disclosed above in the preferred embodiment, it is not intended to limit the present creation, and has any technical field. A person skilled in the art can make some modifications or modifications to equivalent embodiments by using the above-disclosed technical contents without departing from the technical scope of the present invention. The technical essence of the creation Any simple modification, equivalent change and modification of the above embodiments are still within the scope of the technical solution of the present invention.

10‧‧‧ milling cutter
11‧‧‧ Blade
111‧‧‧ tip
12‧‧‧ chip flutes
L1‧‧‧Axis θ1‧‧‧first angle θ2‧‧‧second angle θ3‧‧‧third angle θ4‧‧‧fourth angle

Figure 1 is a side view of the milling cutter of the present invention. Figure 2 is an end view of the milling cutter of the present invention.

10‧‧‧ milling cutter

11‧‧‧ Blade

111‧‧‧ tip

12‧‧‧ chip flutes

θ 1‧‧‧ first angle

θ 2‧‧‧second angle

θ 3‧‧‧ third angle

θ 4‧‧‧fourth angle

Claims (5)

An asymmetrical cutting edge milling cutter comprising four cutting edges, each of the cutting edges extending helically, and a spiral extending chip flute is formed between two adjacent cutting edges, as viewed from the tip end of the milling cutter The blade is asymmetrical. The milling cutter of the asymmetric blade according to claim 1, wherein the four cutting edges sequentially have four included angles on the axis of the milling cutter, and the angles of the four included angles are different. The milling cutter of the asymmetric blade according to claim 2, wherein the four cutting edges sequentially sandwich four angles, wherein the angle between the two opposite angles is greater than 90 degrees, and the remaining two angles at the opposite angles are smaller than 90 degrees. The milling cutter of the asymmetric blade according to claim 3, wherein the four included angles are a first angle, a second angle, a third angle and a fourth angle; the first angle is between 100 degrees. Up to 104 degrees; the second angle is between 83 degrees and 87 degrees; the third angle is between 94 degrees and 98 degrees; the fourth angle is between 75 degrees and 79 degrees. The cutter of the asymmetric blade according to claim 4, wherein the first angle is 102 degrees; the second angle is 85 degrees; the third angle is 96 degrees; and the fourth angle is 77 degrees.