Rough and fine integrated aluminum cutter

Abstract

The utility model discloses a roughing and finishing integrated aluminum cutter which comprises a cutting edge and a cutter handle, the cutting edge comprises at least three groups of end edges and cutting edges, a chip groove is formed between any two groups of cutting edges, one end of the chip groove extends to the position between the corresponding two groups of end edges, and the other end of the chip groove extends to the cutter handle; wherein the end edge is provided with a sleeking edge relief angle in the direction away from the central axis of the end mill, and the end edge is provided with an end edge relief angle in the direction close to the central axis of the end mill; one end of the cutting edge extends to the end edge, the other end of the cutting edge extends to the cutter handle, a false margin relief angle is arranged on the side edge of the cutting edge, and the false margin relief angle is parallel to the edge face of the cutting edge. The utility model solves the problem that different cutters are used for rough machining and finish machining and are directly discarded after being abraded to cause resource waste.

Description

Technical Field

[0001] The utility model relates to the technical field of milling cutters, in particular to a roughing and finishing integrated aluminum cutter. Background Art

[0002] With the popularity of CNC machining, the fields of mechanical manufacturing, 3C, and mechanical parts require higher machining efficiency and higher surface finish of parts. In machining, considering the influence of factors such as cutting efficiency, tool life, and the shape of the workpiece, different cutting tools are generally used in different situations. At present, for aluminum materials with high requirements for surface finish, the processing technology is divided into two process routes: rough machining, fine machining, or semi-machining. Different tools need to be replaced for rough machining and fine machining, and worn tools cannot be reused, resulting in a waste of resources. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a roughing and finishing integrated aluminum knife, which solves the problem of using different knives for roughing and finishing, and directly discarding the knives after they are worn, resulting in waste of resources.

[0004] The technical solution of the utility model is: to provide a rough and fine integrated aluminum knife, including a blade and a handle, wherein the blade includes at least three groups of end edges and cutting edges, and a chip groove is formed between any two groups of cutting edges, one end of the chip groove extends to between the corresponding two groups of end edges, and the other end of the chip groove extends to the handle; wherein,

[0005] The end cutting edge is provided with a wiper edge clearance angle in a direction away from the center axis of the end mill, and the end cutting edge is provided with an end cutting edge clearance angle in a direction close to the center axis of the end mill;

[0006] A cutting edge, one end of the cutting edge extends to the end edge, the other end of the cutting edge extends to the shank, a side edge of the cutting edge is provided with a false edge belt back angle, and the false edge belt back angle is parallel to the cutting edge surface of the cutting edge.

[0007] Furthermore, the end blade includes a first end blade, a second end blade and a third end blade; wherein the angles between the first end blade, the second end blade and the third end blade are all between 115° and 120°, and the angles between the first end blade, the second end blade and the third end blade are different from each other.

[0008] Furthermore, the angle between the first end edge and the second end edge is 115°, the angle between the second end edge and the third end edge is 120°, and the angle between the third end edge and the first end edge is 125°.

[0009] Furthermore, the cutting edge includes a first cutting edge, a second cutting edge and a third cutting edge; wherein the helix angles of the first cutting edge, the second cutting edge and the third cutting edge are all between 35° and 45°, and the helix angles of the first cutting edge, the second cutting edge and the third cutting edge are different from each other.

[0010] Furthermore, the helix angle of the first cutting edge is 39°, the helix angle of the second cutting edge is 40°, and the helix angle of the third cutting edge is 41°.

[0011] Furthermore, the rake angles of the first end edge, the second end edge and the third end edge are between 12° and 15°, and the rake angles of the first end edge, the second end edge and the third end edge are the same.

[0012] Furthermore, the rake angle of the first end edge, the rake angle of the second end edge, and the rake angle of the third end edge are all 14°.

[0013] Furthermore, a tooth gap is formed between any two groups of the end cutting edges, one end of the tooth gap is connected to the chip groove, and the other end of the tooth gap extends to the central axis of the end mill, and the extension direction of the tooth gap forms an inclination angle with the central axis of the end mill, and the inclination angle is an acute angle.

[0014] Furthermore, the cross section of the chip removal groove is an arc, and the cross section radius of the chip removal groove at one end close to the end edge is smaller than the cross section radius of the end far from the end edge.

[0015] Furthermore, the blade and the handle are integrally formed.

[0016] The beneficial effects of the utility model are as follows: the roughing and finishing integrated aluminum cutter provided by the utility model can perform end milling and side milling on parts that need to be cut; a finishing edge back angle is set at the end cutting edge away from the center axis direction, and finishing and finishing are performed when the parts are end milled; a false edge band back angle is set at the side edge of the cutting edge for polishing during side milling, while reducing the friction between the tool and the part to be processed, thereby playing a role in shock resistance and pressure relief. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of the structure of a rough and fine integrated aluminum knife provided in an embodiment of the present application;

[0019] Figure 2 A side view of a rough and fine integrated aluminum knife provided in an embodiment of the present application;

[0020] Figure 3 A front view of a rough and fine aluminum knife provided in an embodiment of the present application.

[0021] Description of Figure Number

[0022] 1-end edge, 2-cutting edge, 3-chip groove, 4-tooth gap;

[0023] 11-first end edge, 12-second end edge, 13-third end edge, 14-end edge back angle, 15-finishing edge back angle, 21-first cutting edge, 22-second cutting edge, 23-third cutting edge, 24-false edge band back angle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the present invention, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0026] The following is a detailed description of the implementation of the present invention in conjunction with the specific drawings:

[0027] Figure 1 A schematic diagram of a rough and fine integrated aluminum knife structure provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the embodiment of the present application discloses a rough and fine aluminum knife, including a blade and a handle, wherein the blade includes three groups of end blades 1 and three groups of cutting edges 2, and a chip groove 3 is formed between any two groups of cutting edges 2, and one end of the chip groove 3 extends between the two groups of end blades 1, and the other end extends to the handle. The end blade 1 is used for end milling to drill holes and grooves on parts, and the cutting edge 2 is used for side milling to perform large-area milling on parts or polish the surface. The chip groove 3 is used to discharge the waste generated during end milling or side milling in time to avoid waste accumulation and scratching of parts. The handle and the blade are integrally formed and fixed on a digital engraving machine for processing aluminum parts.

[0028] Figure 2A side view of a rough-and-fine aluminum knife provided in an embodiment of the present application, wherein the end blade 1 includes a first end blade 11, a second end blade 12 and a third end blade 13, and the angles between the first end blade 11, the second end blade 12 and the third end blade 13 are between 115° and 120°, and the angles between the first end blade 11, the second end blade 12 and the third end blade 13 are different from each other. Preferably, the angle between the first end blade 11 and the second end blade 12 is 115°, the angle between the second end blade 12 and the third end blade 13 is 120°, and the angle between the third end blade 13 and the first end blade 11 is 125°. The end face tooth pitches of the rough-and-fine aluminum knife are different, which reduces the resonance of the workpiece during processing and improves the surface finish of the workpiece.

[0029] The rake angles of the first end blade 11, the second end blade 12 and the third end blade 13 are between 12° and 15°, and the rake angles of the first end blade 11, the second end blade 12 and the third end blade 13 are the same. Preferably, the rake angles of the first end blade 11, the second end blade 12 and the third end blade 13 are all 14°. The rake angle of the end blade is the cutting-in angle of the end milling part, which ensures a suitable end milling speed while not easily damaging the tool when processing the workpiece, avoiding problems such as blade surface collapse.

[0030] A tooth gap 4 is formed between the two groups of end blades 1, one end of the tooth gap 4 is connected to the chip groove 3, and the other end of the tooth gap 4 extends to the central axis of the end mill, and the extension direction of the tooth gap 4 forms an acute angle with the central axis of the end mill. During the rotation of the end mill, the tooth gap 4 and the outer side of the end blade form a closed cavity, and the waste material will not be discharged from the bottom end milling plane. The waste material generated by the end milling flows into the chip groove 3 through the tooth gap 4, thereby reducing the possibility of scratching the workpiece.

[0031] Each set of end cutting edges includes an end cutting edge clearance angle 14 and a wiper cutting edge clearance angle 15. The end cutting edge clearance angle 14 is arranged on the side close to the center axis of the end mill and is used for large-area cutting of the end face. The wiper cutting edge clearance angle 15 is arranged on the side away from the center axis of the end mill and is used for fine machining and polishing of the end face. The end cutting edge clearance angle 14 is a long cutting edge and can be used for rough machining and fast milling of large-area workpieces when the tool is worn.

[0032] Figure 3A front view of a roughing and finishing integrated aluminum cutter provided in an embodiment of the present application, wherein the cutting edges include a first cutting edge 21, a second cutting edge 22, and a third cutting edge 23, wherein the helix angles of the first cutting edge 21, the second cutting edge 22, and the third cutting edge 23 are all between 35° and 45°, and the helix angles of the first cutting edge 21, the second cutting edge 22, and the third cutting edge 23 are different from each other, preferably, the helix angle of the first cutting edge 21 is 39°, the helix angle of the second cutting edge 22 is 40°, and the helix angle of the third cutting edge 23 is 41°. By setting the helix angles of each cutting edge to be unequal, the eccentricity problem of the end face of the end mill with unequal tooth pitch is optimized, the imbalance is reduced to a certain extent, and the finish and processing quality of the machined surface are improved.

[0033] A chip groove 3 is formed between any two sets of end edges. The cross-section of the chip groove 3 is an arc, which ensures the rigidity of the tool while increasing the chip accommodating space. The arc radius of the cross-section of the chip groove 3 close to the end edge 1 is smaller than the arc radius of the cross-section close to the tool handle. A variable core chip groove is used to facilitate the discharge of waste from the end close to the tool handle, reducing the possibility of waste scratching the workpiece.

[0034] The side edge of each group of cutting edges 2 is provided with a false edge band clearance angle 24, which is parallel to the cutting edge surface. The cross-section of the side false edge clearance angle 24 is an arc, which is used to reduce the friction between the tool and the workpiece, play a role in shock resistance and pressure relief, and make the surface of the workpiece processed by side milling smoother and flatter.

[0035] The roughing and finishing integrated aluminum tool provided in this embodiment can be used for workpiece surface finishing. After the tool is worn and cannot meet the finishing requirements, it can continue to be used for large-area roughing of the workpiece. The same type of tool can be used to meet the requirements of roughing and finishing at the same time, avoiding waste of resources caused by discarding the tool.

[0036] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A rough and fine integrated aluminum knife, characterized in that: It comprises a blade and a handle, wherein the blade comprises at least three groups of end blades and cutting edges, a chip groove is formed between any two groups of cutting edges, one end of the chip groove extends to between the corresponding two groups of end blades, and the other end of the chip groove extends to the handle; wherein, The end cutting edge is provided with a wiper edge clearance angle in a direction away from the center axis of the end mill, and the end cutting edge is provided with an end cutting edge clearance angle in a direction close to the center axis of the end mill; A cutting edge, one end of the cutting edge extends to the end edge, the other end of the cutting edge extends to the shank, a side edge of the cutting edge is provided with a false edge belt back angle, and the false edge belt back angle is parallel to the cutting edge surface of the cutting edge.

2. A rough and fine integrated aluminum knife as claimed in claim 1, characterized in that: The end blade includes a first end blade, a second end blade and a third end blade; wherein the angles between the first end blade, the second end blade and the third end blade are all between 115° and 120°, and the angles between the first end blade, the second end blade and the third end blade are different from each other.

3. A rough and fine integrated aluminum knife as claimed in claim 2, characterized in that: The included angle between the first end edge and the second end edge is 115°, the included angle between the second end edge and the third end edge is 120°, and the included angle between the third end edge and the first end edge is 125°.

4. The rough and fine integrated aluminum knife as claimed in claim 2, characterized in that: The cutting edge includes a first cutting edge, a second cutting edge and a third cutting edge; wherein the helix angles of the first cutting edge, the second cutting edge and the third cutting edge are all between 35° and 45°, and the helix angles of the first cutting edge, the second cutting edge and the third cutting edge are different from each other.

5. The rough and fine integrated aluminum knife as claimed in claim 4, characterized in that: The helix angle of the first cutting edge is 39°, the helix angle of the second cutting edge is 40°, and the helix angle of the third cutting edge is 41°.

6. The rough and fine integrated aluminum knife as claimed in claim 4, characterized in that: The front angles of the first end edge, the second end edge and the third end edge are between 12° and 15°, and the front angles of the first end edge, the second end edge and the third end edge are the same.

7. The rough and fine integrated aluminum knife as claimed in claim 6, characterized in that: The rake angle of the first end edge, the rake angle of the second end edge and the rake angle of the third end edge are all 14°.

8. The rough and fine integrated aluminum knife according to claim 1, characterized in that: A tooth gap is formed between any two groups of the end edges, one end of the tooth gap is connected to the chip groove, and the other end of the tooth gap extends to the central axis of the end mill. The extension direction of the tooth gap forms an inclination angle with the central axis of the end mill, and the inclination angle is an acute angle.

9. The rough and fine integrated aluminum knife according to claim 1, characterized in that: The cross section of the chip removal groove is an arc, and the cross section radius of the end of the chip removal groove close to the end edge is smaller than the cross section radius of the end far from the end edge.

10. The rough and fine integrated aluminum knife according to claim 1, characterized in that: The blade and the handle are integrally formed.

Images