CN216502586U - Novel milling cutter is used in aviation aluminum alloy processing - Google Patents

Abstract

The utility model belongs to the technical field of machining. Based on the problems that the existing milling cutter is difficult to remove chips when processing aluminum alloy, so that the cutter is easy to damage and the surface of a workpiece is not flat, the utility model discloses a novel milling cutter for processing aviation aluminum alloy, which comprises a cutter handle and a cutter body; core holes are formed in the axial center directions of the cutter handle and the cutter body in a penetrating manner; the cutter body is provided with a cooling liquid hole which is positioned at the bottom of the chip groove and communicated with the core hole; the cutter body is provided with at least two cutting edges which are spirally distributed in the circumferential direction of the cutter body; a plurality of saw teeth which are uniformly distributed are arranged on the rear cutter face of the cutting edge; the chip grooves are spirally formed between the adjacent cutting edges and are consistent with the spiral angle of the cutting edges; the wave blade is in a sawtooth shape and is arranged on the rear cutter face of the blade and the wall face of the chip groove forms a chip dividing groove. The novel milling cutter has smooth chip removal, is not easy to stick a cutter and has long service life.

Description

A new type of milling cutter for aerospace aluminum alloy processing

technical field

The utility model belongs to the technical field of mechanical processing, in particular to a novel milling cutter for aviation aluminum alloy processing.

Background technique

Aluminum alloys are widely used in the aviation field as aircraft structural materials due to their light weight, high strength, and easy processing.

When machining aluminum alloys, due to the softness of aluminum alloy materials, it is very easy to have difficulty in chip removal during cutting, resulting in the problems that the cutting edge of the tool is easily damaged and the surface of the workpiece is uneven.

Utility model content

Based on the existing problems that the surface of the workpiece is scratched by chips and the tool is easily damaged due to the difficulty of chip removal when cutting aluminum alloys, the utility model aims to provide a new type of milling cutter for machining aviation aluminum alloy. Smooth chip evacuation helps to prevent tool damage and protect workpiece.

To achieve the above object, the utility model adopts the following technical solutions:

A new type of milling cutter for aerospace aluminum alloy processing, comprising:

handle and body;

Wherein, the shank and the cutter body are connected and fixed to form an integral milling cutter structure;

The cutter body has:

There are at least two blade edges, which are spirally distributed in the circumferential direction of the blade body; the cutting edge of the blade edge is provided with a plurality of serrations evenly distributed;

The chip removal groove is spirally opened between the adjacent cutting edges and is consistent with the helix angle of the cutting edge; the corrugated edge is serrated and is arranged on the flank of the cutting edge, and the chip removal The wall surface of the groove forms a chip groove.

In one of the technical solutions disclosed in the present utility model, a core hole is formed through the tool holder and the tool body in the axial center direction; the tool body is provided with a cooling liquid hole, located in the chip removal The bottom of the groove communicates with the core hole.

In one of the technical solutions disclosed in the present utility model, the cooling liquid holes are arranged equidistantly from top to bottom.

In one of the technical solutions disclosed in the present utility model, the wave edge is in the shape of a triangular serration.

In one of the technical solutions disclosed in the present utility model, each of the saw teeth is parallel to the cross section of the cutter body.

In one of the technical solutions disclosed in the present utility model, the rake surface of the blade is a concave arc surface.

In one of the technical solutions disclosed in the present utility model, both the rake face and the flank face of the blade are processed by surface mirror polishing.

In one of the technical solutions disclosed in the present utility model, a chip flute is further included, which is arranged at the end face of the chip flute adjacent to the cutter body.

In one of the technical solutions disclosed in the present utility model, the cutter body and the cutter handle are integrally formed.

In one of the technical solutions disclosed in the present utility model, there are three blades.

1. By arranging the blade spirally on the cutter body, the cutting edge of the blade is serrated, which reduces the contact area with the workpiece, which can effectively prevent and reduce the vibration during cutting operations, and is conducive to reducing cutting resistance, thereby improving cutting efficiency. and tool life.

2. At the same time, the flank of the blade is also provided with a triangular serrated wave edge, and a chip groove is formed between the chip removal groove, which can avoid long chips, facilitate smooth chip removal and prevent chips from scratching the surface of the workpiece.

3. Further, a core hole is formed through the tool body and the tool holder, and a coolant hole connected to the core hole is also opened in the chip flute, so that the coolant can be transported to the cutting edge of the milling cutter, so that the milling The knife is fully cooled and lubricated to prevent sticking and deformation of the workpiece, and it is beneficial to improve the service life of the tool.

4. Further, there is a chip groove between the end blades, which is conducive to the rapid discharge of chips and prevents chips from clogging.

5. Finally, the rake face of the blade has a concave arc surface, which increases the chip removal space and is conducive to smooth chip removal.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only For some embodiments of the present application, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the front view of the utility model.

Figure 2 is an oblique view of the utility model.

FIG. 3 is a bottom plan view of the utility model.

Reference numerals: 1-tool handle, 2-blade body; 21-blade; 211-end edge; 212-serration; 213-wave edge; 214-rake face; 215-flank face; 216-second flank face ; 22 - chip flute; 23 - chip flute.

Detailed ways

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not restrictive.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated A device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integration; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two elements or the interaction of two elements relation. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features The features are not in direct contact but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Based on the aluminum alloy material in the cutting process, due to the soft material, the existing milling cutter is difficult to remove chips, and the coolant cannot directly contact the cutting edge of the milling cutter, resulting in insufficient cooling of the milling cutter and easy sticking. , resulting in the damage of the milling cutter and the problem of uneven surface of the workpiece, the embodiment of the present utility model discloses a new milling cutter for aerospace aluminum alloy processing, the structure of which is shown in the accompanying drawings 1-3, including a shank 1 and a cutter body 2 . The new type of milling cutter has smooth chip removal, and the coolant can be directly delivered to the cutting edge of the milling cutter, so that the milling cutter can be fully cooled; it is beneficial to improve the cutting efficiency and improve the service life of the milling cutter.

Specifically, the tool shank 1 and the tool body 2 are integrally formed, wherein the tool shank 1 and the tool body 2 are provided with a core hole 11 in the axial center direction, and communicate with the cooling liquid drain pipe on the milling machine. The cutter body 2 is provided with a coolant hole 12 which communicates with the core hole 11 .

The cutter body 2 is provided with a cutting edge 21 , a chip groove 22 and a chip groove 23 .

There are three cutting edges 21 , which are spirally distributed in the circumferential direction of the cutter body 2 . The cutting edge 21 and the end face of the cutting body 2 form an end cutting edge 211 , and the flank surface of the end cutting edge 211 is treated with an obtuse angle. The flank 215 of the blade 21 is provided with a plurality of serrations 212 evenly distributed, and each serration 212 is parallel to the cross section of the blade body 21 , so that the cutting edge of the blade 21 forms a spiral serration blade shape.

The above sawtooth structure is adopted to facilitate heat dissipation and chip removal; at the same time, compared with the traditional smooth blade, the serrated blade has a smaller contact area with the workpiece, which can effectively reduce the vibration generated by the cutting operation, and the cutting resistance is small. Helps to speed up cutting efficiency and prolong tool life.

The chip flutes 22 are helically opened between two adjacent cutting edges 21 , that is, the chip flutes 22 are helically distributed, and the helix angle of the chip flutes 22 is equal to that of the cutting edges 21 . The coolant holes 12 are equidistantly opened at the bottom of the chip flutes 22 from top to bottom. With the above structure, the cooling liquid can be directly discharged from the cooling liquid hole 12 to the cutting edge of the milling cutter, so that the cutting edge of the milling cutter can be fully cooled and lubricated, and the sticking of the cutter and the deformation of the workpiece are prevented, and it is beneficial to improve the processing efficiency and prolong the cutter. service life.

The chip flutes 23 are provided between the adjacent end edges 211 and communicate with the chip flutes 22 , and the ends of the chip flutes 23 are no longer than the axial centerline of the cutter body.

As an optimized solution of this embodiment, the flank 215 extends to the side of the secondary flank 216 of the blade 21 to form a wave edge 213 . The corrugated edge 213 has a triangular-like sawtooth shape, and forms a plurality of chip dividing grooves with the wall surface of the chip flute 22 . With the above structure, the chips can be separated while the chips are being cut, avoiding the difficulty of chip removal due to the long chips, and also preventing the chips from scratching the surface of the workpiece; the triangular serrated shape is beneficial to increase the sharpness and strength of the cutting edge.

As an optimized solution of this embodiment, the rake face 214 of the cutting edge 21 is an inner concave arc surface, and this design is beneficial to increase the chip removal space and facilitate rapid chip removal.

As a specific implementation of this embodiment, the rake face 214 and the flank face 215 of the blade 21 are both mirror-polished to prevent sticking of the knife, which is beneficial to improve the machining accuracy and the service life of the tool.

The working mode of the utility model is: when using the new milling cutter disclosed in the embodiment of the present utility model, the milling cutter of the embodiment of the present utility model is installed on the head of the milling machine, and the core hole 11 on the milling cutter is connected to the milling machine. The cooling liquid drain pipe inside the machine head is connected, and the cooling liquid is discharged from the core hole 11 and the cooling liquid hole 12 of the cutter body 2 to cool and lubricate the milling cutter.

Through the above description, the beneficial effects of the present utility model are:

By arranging the cutting edge helically on the cutter body, the cutting edge of the cutting edge is in a serrated shape, which reduces the contact area with the workpiece, which can effectively prevent and reduce vibration during cutting operations, and is conducive to reducing cutting resistance, thereby improving cutting efficiency and cutting tools. At the same time, the flank surface of the blade is also provided with a triangular serrated wave edge, and a chip groove is formed between the wall surface of the chip groove, which can avoid long chips, and is conducive to smooth chip removal and prevention of chip scratches. The surface of the workpiece is damaged; further, a core hole is formed through the cutter body and the shank, and a coolant hole connected to the core hole is also opened in the chip removal groove, so that the coolant can be transported to the cutting edge of the milling cutter. The milling cutter can be fully cooled and lubricated to prevent sticking and deformation of the workpiece, and it is beneficial to improve the service life of the tool; further, there is a chip groove between the end blades, which is conducive to the rapid discharge of chips and prevents chips from clogging ;Finally, the rake face of the blade has a concave arc surface, which increases the chip removal space and is conducive to smooth chip removal.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention The protection scope of the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims (10)

1. The utility model provides an aviation aluminum alloy processing is with novel milling cutter which characterized in that includes:

a knife handle and a knife body;

the cutter handle and the cutter body are connected and fixed to form an integral milling cutter structure;

the cutter body is provided with:

at least two cutting edges are spirally distributed in the circumferential direction of the cutter body; a plurality of saw teeth which are uniformly distributed are arranged on the rear cutter face of the cutting edge;

the chip grooves are spirally formed between the adjacent cutting edges and are consistent with the spiral angle of the cutting edges; the wave blade is in a sawtooth shape and is arranged on the rear cutter face of the blade and the wall face of the chip groove forms a chip dividing groove.

2. The novel milling cutter for machining aviation aluminum alloy as claimed in claim 1, wherein core holes are formed through the cutter shank and the cutter body in the axial center direction; the cutter body is provided with a cooling liquid hole which is positioned at the bottom of the chip groove and communicated with the core hole.

3. The novel milling cutter for machining aviation aluminum alloy as claimed in claim 2, wherein the coolant holes are arranged at equal intervals from top to bottom.

4. The novel milling cutter for machining aviation aluminum alloy as claimed in claim 1, wherein the wave edge is triangular and serrated.

5. The novel milling cutter for machining aviation aluminum alloy as claimed in claim 1, wherein each of the saw teeth is parallel to a cross section of the cutter body.

6. The novel milling cutter for aviation aluminum alloy machining according to claim 1 or 5, wherein the rake face of the cutting edge is a concave arc face.

7. The novel milling cutter for machining aviation aluminum alloy as claimed in claim 6, wherein the rake face and the flank face of the cutting edge are both treated by surface mirror polishing.

8. The novel milling cutter for aviation aluminum alloy processing as recited in claim 1, further comprising chip flutes disposed at chip flutes adjacent to the end surfaces of the cutter body.

9. The novel milling cutter for aviation aluminum alloy processing as claimed in claim 1, wherein the cutter body and the cutter handle are integrally formed.

10. The novel milling cutter for machining aviation aluminum alloy as claimed in claim 1, wherein the number of the cutting edges is three.

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