CN2925711Y - Milling cutter with double-layer milling effect - Google Patents

Abstract

The utility model discloses a milling cutter of double-deck milling effect of utensil is mainly equipped with the relative spiral helicine chip removal slot that just is in the periphery, makes this two chip removal slots within a definite time be formed with the spiral helicine cutting edge of twice, and the cutting edge of per pass includes: a first side edge which is an acute angle edge formed by a groove edge of one chip removal groove; the knife back at one side is a blunt edge formed by the other groove edge of the other chip removal groove; a second side edge formed on the periphery of the cutting blade and parallel to the first side edge. The utility model discloses can once feed accomplish simultaneously that rough milling cuts and finish milling cuts to can promote work efficiency by a wide margin, and rough milling cuts and finish milling cuts do not by the different side sword completion, thereby prolonged milling cutter life.

Description

Milling cutter with double-layer milling effect

technical field

The utility model relates to a milling cutter, in particular to a milling cutter with double-layer milling effect which can complete rough milling and fine milling at the same time with one feed.

Background technique

Generally common milling cutter structure, as shown in Figure 4, it is mainly that two roads are provided with two spiral chip removal grooves 40 on the periphery of the milling cutter 4 oppositely, so that two roads chip removal grooves 40 form two A helical cutting edge 41, and one edge of the chip removal groove 40 forms an acute-angled side edge 410 of the cutting edge 41 for side milling, while the other groove of the chip removal groove 40 The side forms an obtuse angled blade back 411 of the cutting blade 41 , and the periphery between the side blade 410 and the blade back 411 forms an arc-shaped blade surface 412 .

Please refer to shown in Fig. 5, point out that this used milling cutter structure is in milling process, because each cutting edge 41 only has a side cutting edge 410, so all need first with a bigger progress each time when milling. Rough milling (i.e. heavy cutting) should be done first with the amount of cutting tool, and then fine milling (i.e. light cutting) should be done with a smaller amount of cutting tool, so that a fine and smooth milling surface can be obtained when the milling is completed. However, such a way of controlling the milling precision by the amount of feed will not only reduce the working efficiency of milling, but also the side cutting edge 410 is prone to cracking, which greatly shortens the service life.

The reason is that the designer aimed at the many defects caused by the imperfect structural design of the above-mentioned used milling cutter, and deeply conceived, and actively studied the way of improvement, and developed and designed the utility model through long-term efforts to improve and try.

Utility model content

The technical problem to be solved by the utility model is to provide a milling cutter with double-layer milling effect which can greatly improve the working efficiency and prolong the service life of the milling cutter in view of the deficiencies of the prior art.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a milling cutter with double-layer milling effect, which is mainly provided with two opposite and spiral chip removal grooves on the periphery, so that the two Two spiral cutting edges are formed between the first chip removal grooves, and each cutting edge includes: a first side edge, which is an acute angle edge formed by a groove edge of one of the chip removal grooves; An obtuse edge formed by another groove edge of another chip removal groove; a second side edge is formed on the periphery of the cutting edge and is parallel to the first side edge.

In the above scheme: the cutting edge further includes a first side rake surface and a second side rake surface, the first side rake surface is the peripheral surface between the first side rake and the second side rake, which is an arc surface shape, the second side blade surface is the peripheral surface between the second side blade and the side blade back, and is in the shape of an arc surface, and the arc radius of the second side blade surface is larger than that of the first side blade surface, so that The peripheral surface of the cutting blade has a double-layer shape. A shallow chip removal groove is formed on the first side cutting surface. The shallow chip removal groove is formed along the lower edge of the second side cutting edge and is shallower than the chip removal groove.

The milling cutter further comprises: a first end edge, arranged at the end of a cutting edge, and formed on one side of the end of one of the chip removal grooves; a second end edge, arranged at the other cutting edge and formed on one side of the edge of the other chip removal groove, and the second end edge is in a straight line with the first end edge; a first end edge is formed by the first end edge and a second end blade slopes backward at an angle from the second end edge, and the slope direction of the second end blade face is opposite to that of the first end blade face.

The milling cutter further includes a first end blade and a second end blade, the first end blade is inclined backward from the first end blade at a greater angle, and the second end blade is rearward from the second end blade Slope down to a wider angle.

Compared with the prior art, the beneficial effect of the utility model is: when the milling cutter of the utility model rotates and mills, the first side edge will firstly perform rough milling on the workpiece, and then the second side edge will also continue Perform fine milling on the workpiece, so that each feed of the milling cutter will complete the effect of rough milling and fine milling at the same time, thereby greatly improving the work efficiency of milling, and because the rough milling Milling and finish milling are performed by the first side cutting edge and the second side cutting edge respectively, so the service life of the milling cutter can be greatly increased.

Description of drawings

Fig. 1 is a perspective view of the utility model.

Fig. 2 is a perspective view of the end of the utility model.

Fig. 3 is a schematic diagram of the milling action of the present invention.

Fig. 4 is a perspective view of a used milling cutter.

Fig. 5 is a schematic diagram of the milling action of the used milling cutter.

Label description:

1 milling cutter 10, 10a chip removal groove

20 cutting edge 21 first side edge

22 second side edge 23 side knife back

24 The first side knife surface 25 The second side knife surface

26 shallow flute 30 first edge

31 The second end blade 32 The first end blade face

33 The second end knife face 34 The first end knife back

35 second end knife back

4 milling cutter 40 chip grooves

41 cutting edge 410 side cutting edge

411 blade back 412 blade face

Detailed ways

Please refer to Figures 1 and 3, which are preferred embodiments of the milling cutter described in the present invention. Its structure is mainly that two opposite and spiral chip removal grooves 10 are arranged on the periphery of the milling cutter 1. 10a, two helical cutting edges 20 are formed between the two chip removal grooves 10, 10a, and each cutting edge 20 includes:

A first side edge 21 is an acute-angled edge formed by a helical groove edge of one of the chip removal grooves 10;

A second side edge 22 is formed on the periphery of the cutting edge 20, and is parallel to the first side edge 21, so that the radius of rotation of the second side edge 22 is larger than that of the first side edge when the milling cutter 1 rotates Blade 21;

One side blade back 23 is an obtuse edge formed by another helical groove edge of the other chip removal groove 10a; The peripheral surface is arc-shaped;

A second side knife surface 25 is the peripheral surface between the second side knife surface 22 and the side knife back 23, which is in the shape of an arc surface, and the arc radius of the second side knife surface 25 is larger than that of the first side knife surface 24, so that the peripheral surface of the cutting blade 20 is in a double-layer shape;

And a shallow chip removal groove 26 is arranged on the first side blade surface 24, and the shallow chip removal groove 26 is formed along the lower edge of the second side edge 22, and the depth is shallower than that of the chip removal groove 10 .

Please refer to Fig. 2, point out that the milling cutter 1 further includes:

A first end edge 30 is located at the end of a cutting edge 20 and is formed on one side of the end of one of the chip removal grooves 10;

A second end edge 31 is provided at the end of the other cutting edge 20 and formed on one side of the end of the other chip removal groove 10a, and the second end edge 31 is connected to the first end edge 30 in a straight line;

A first end blade surface 32 is inclined backwards at an angle from the first end edge 30; and a second end blade surface 33 is inclined backwards at an angle from the second end edge 31, and the second end The low slope direction of the knife face 33 is opposite to the first end knife face 32;

A first end blade back 34, which slopes backward at a larger angle from the first end blade surface 32;

And a second end blade back 35, from which the second end blade surface 33 slopes backward at a larger angle.

Referring to FIG. 3, it can be seen that when the milling cutter 1 rotates and mills the workpiece, the first side edge 21 will first rough mill the workpiece, and make the larger iron chips pass through the chip removal groove 10. Then, the second side edge 22 will then finish milling the workpiece, and the smaller iron chips will be led out from the shallow chip groove 26, so that each feed of the milling cutter 1 will Simultaneously accomplish the effects of rough milling and fine milling, thereby greatly improving the work efficiency of milling, and because the rough milling and fine milling are performed by the first side edge 21 and the second side edge 22 respectively , so the service life of the milling cutter 1 can be greatly increased.

To sum up, it should be known that this utility model has industrial applicability and progress, and there is no similar product or publication among similar products, so it has novelty, so it meets the application requirements for a new model patent.

Claims (5)

1, the milling cutter of the double-deck milling effect of a kind of tool, mainly be to be provided with the relative and spiral chip removal groove of twice in periphery, make between this twice chip removal groove and be formed with the spiral helicine cutting blade of twice, and the per pass cutting blade comprises: one first side edge is the formed sharp edge of a trough rim of a chip removal groove wherein; And a side tool back of the body, be the formed obtuse angle edge of another trough rim of another chip removal groove; It is characterized in that this milling cutter also comprises one second side edge, be formed at this cutting blade periphery, and be parallel shape with this first side edge.

2, milling cutter as claimed in claim 1, it is characterized in that, this cutting blade more comprises one first side knife surface and one second side knife surface, this first side knife surface is the side face between this first side edge and this second side edge, it is planar to be circular arc, and this second side knife surface is the side face between this second side edge and this side tool back of the body, and it is planar to be circular arc, and the arc radius of this second side knife surface is greater than this first side knife surface, so that the side face of this cutting blade is double-deck step shape.

3, milling cutter as claimed in claim 2 is characterized in that, is formed with a shallow chip removal groove on this first side knife surface, and this shallow chip removal groove is along this second side edge lower edge moulding, and the degree of depth is shallow than this chip removal groove.

4, milling cutter as claimed in claim 1 is characterized in that, this milling cutter more comprises: one first end sword, and be located at the end of a bite sword, and be formed at a wherein side channel limit of a chip removal groove ends; One second end sword is located at the end of another cutting blade, and is formed at a side channel limit of another chip removal groove ends, and this second end sword and this first end sword are a straight line; One first end knife face is by the low backward oblique angle of this first end sword; And one second end knife face, by the low backward oblique angle of this second end sword, and the low tilted direction of this second end knife face is opposite with this first end knife face.

5, milling cutter as claimed in claim 4, it is characterized in that, this milling cutter more includes the one first end knife back and the second end knife back, and this first end knife back hangs down oblique one bigger angle backward by this first end knife face, and this second end knife back hangs down oblique one bigger angle backward by this second end knife face.

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