CN214640517U

CN214640517U - Cutting tool

Info

Publication number: CN214640517U
Application number: CN202023028419.8U
Authority: CN
Inventors: 安彦杰; 邹淋合; 全洪佳; 姜丰; 陈涛; 高水清; 蒋益民; 李军旗; 谭嘉; 任峰
Original assignee: Shenzhen Jingjiang Yunchuang Technology Co Ltd
Current assignee: Shenzhen Fulian Jingjiang Technology Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-11-09
Anticipated expiration: 2030-12-15

Abstract

The utility model provides a cutter for mill work piece is in order to form the cell body, the cutter includes the handle of a knife and connects in the cutting part of handle of a knife, and the cutting part includes core and the first sword body, and the core is connected in the handle of a knife, and the first sword body is the heliciform and sets up in the periphery of core. The first sword body includes first side sword and end sword, and the end sword distributes in one side that the handle of a knife was kept away from to the first sword body along the axis of perpendicular core, and first side sword distributes in one side that the first sword body deviates from the core, and the side sword is used for milling the side of work piece in order to form the cell body, and the end sword is used for milling the bottom surface of work piece in order to form the cell body. The end sword includes inboard end sword and connects in the outside end sword of inboard end sword, and inboard end sword is close to the axis, and the inclination of inboard end sword is positive, and the relief angle of inboard end sword is positive, and the inclination of outside end sword is negative, and the relief angle of outside end sword is negative. The utility model provides a cutter has avoided the peak of first end sword tip, becomes the point cutting process mode line extrusion, face abrasive machining mode to the reduction leaves the sword line on the work piece.

Description

Cutting tool

Technical Field

The utility model relates to a cutter.

Background

Milling plays an important role in the manufacturing field, is one of the most important processes in machining, and in machining, particularly for machining structures of various shapes and structures in the manufacturing field of mobile equipment such as mobile phones, the application of cutters is extremely wide.

Generally, because a sliding key needs to be installed, the inner surface of a deep groove of a mute key of a mobile phone is required to be smooth and has no obvious tool mark, and the bottom of the deep groove machined by the existing tool has step-shaped circle tool marks, so that the quality requirement of a client is not met.

SUMMERY OF THE UTILITY MODEL

The main object of the present invention is to provide a tool, which can reduce the tool marks left on the surface of the workpiece during actual machining.

A cutter is used for milling a workpiece to form a groove body and comprises a cutter handle and a cutting part connected to the cutter handle, wherein the cutting part comprises a core body and a first blade body, the core body is connected to the cutter handle, and the first blade body is spirally arranged on the periphery of the core body. The first blade body comprises a first side blade and an end blade, the end blade is distributed on one side, away from the tool handle, of the first blade body along a central axis perpendicular to the core body, the first side blade is distributed on one side, away from the core body, of the first blade body, the side blade is used for milling the workpiece to form the side face of the groove body, and the end blade is used for milling the workpiece to form the bottom face of the groove body. The end blade comprises an inner side end blade and an outer side end blade connected with the inner side end blade, the inner side end blade is close to the central axis, the inclination angle of the inner side end blade is positive, the back angle of the inner side end blade is positive, the inclination angle of the outer side end blade is negative, and the back angle of the outer side end blade is negative.

Further, the inclination angle of the inner side end blade is 3-5 degrees, the back angle of the inner side end blade is 6-10 degrees, the inclination angle of the outer side end blade is-3-0 degrees, and the back angle of the outer side end blade is-4-1 degrees.

Further, the outside end edge includes the outside rake face and connect in the outside smoothing surface of the outside rake face, the inside end edge includes the inside rake face and connect in the inside smoothing surface of the inside rake face, the inside rake face with the outside rake face is coplane, the length of outside smoothing surface along the normal direction is 10% ~ 20% of core external diameter, the width of outside smoothing surface along perpendicular normal direction is 6% ~ 12% of core external diameter.

Further, the first side edge includes a first axial edge, a second axial edge, and a first radial edge connected to the first axial edge and the second axial edge, the first axial edge and the second axial edge are parallel to the central axis, and the first radial edge is perpendicular to the central axis.

Further, the cutting portion further includes a second blade body, the second blade body includes a second side blade and the end blade, the second side blade includes a third axial blade, a fourth axial blade and a second radial blade connected to the third axial blade and the fourth axial blade, the third axial blade and the fourth axial blade are parallel to the central axis, the second radial blade and the central axis are obliquely disposed, and the second blade body and the first blade body are disposed on the outer periphery of the core body in a staggered manner.

Furthermore, a first chip groove is formed between every two adjacent end blades, a second chip groove is formed between every two adjacent first blade bodies and every two adjacent second blade bodies, and the first chip grooves are communicated with the second chip grooves.

Further, the cutter is made of hard alloy or ceramic.

Further, the tool shank comprises a first end portion and a second end portion opposite to the first end portion, a projection of the second end portion along the central axis direction is located in the first end portion, and the core body is connected to the second end portion.

The utility model provides a cutter sets up to just through the inclination with the inboard end sword of first end sword, the relief angle of inboard end sword is positive, and will first end sword the inclination of outside end sword is the burden, the relief angle of outside end sword is the burden, makes the cutter is when the cutting, has avoided the peak of first end sword tip, becomes the point cutting process mode line extrusion, face abrasive machining mode to the reduction leaves the knife line on the work piece.

Drawings

Fig. 1 is an overall schematic view of a cutter provided by an embodiment of the present invention.

Fig. 2 is a schematic view of a first end edge and a second end edge of the tool shown in fig. 1.

Fig. 3 is another angle view of the first and second end edges of the tool shown in fig. 1.

Description of the main elements

Cutting tool 100

Knife handle 10

First end portion 11

Second end 12

Cutting part 20

Core body 21

First blade 22

First side edge 221

First end edge 222

Inner end edge 223

Inner rake surface 2231

Medial plane 2232

Outer end edge 224

Outer rake surface 2241

Outside plane 2242

First axial edge 225

Second axial edge 226

First radial edge 227

First chip groove 228

Second blade body 23

Second side edge 231

Second end edge 232

Third axial edge 233

Fourth axial edge 234

Second radial edge 235

Second chip groove 24

Inclination angle gamma

Relief angle delta

Length L

Width W

Central axis A

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the present invention, and the described embodiments are only some examples of the present invention, but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "center", "axial direction", etc. are based on the directions or positional relationships shown in the drawings of the present invention, and are only for convenience of description of the present invention, and do not indicate or imply specific directions that the indicated device or component must have, and therefore, should not be construed as limiting the present invention.

It should be noted that, in the present invention, the straight line along the axial center of the cemented carbide drill bit is defined as the central axis, and the axial angle described in the present invention is the included angle between the specific direction and the central axis, and those skilled in the art can understand and analyze the axial angle by combining the specific structure and the illustration.

Referring to fig. 1, an embodiment of the present invention provides a cutting tool 100, including a tool holder 10 and a cutting portion 20 connected to the tool holder 10, where the cutting portion 20 includes a core body 21 and a first blade 22, the core body 21 is connected to the tool holder 10, and the first blade 22 is spirally disposed on an outer periphery of the core body 21.

The first blade body 22 comprises a first side edge 221 and a first end edge 222, the first end edge 222 is distributed on one side, away from the tool holder 10, of the first blade body 22 along a central axis a perpendicular to the core body 21, the first side edge 221 is distributed on one side, away from the core body 21, of the first blade body 22 along the central axis a approximately, the first side edge 221 is used for milling a workpiece (not shown) to form a side face of a groove body (not shown), and the first end edge 222 is used for milling the workpiece to form a bottom face of the groove body.

Referring to fig. 2 and 3, the first end blade 222 includes an inner end blade 223 and an outer end blade 224 connected to the inner end blade 223, the inner end blade 223 is close to the central axis a, an inclination angle α of the inner end blade 223 is positive, a relief angle β of the inner end blade 223 is positive, an inclination angle γ of the outer end blade 224 is negative, and a relief angle δ of the outer end blade 224 is negative.

The utility model provides a cutter 100 sets up to just through the inclination alpha with the inboard end sword 223 of first end sword 222, the relief angle beta of inboard end sword 223 is positive, and will first end sword 222 the inclination gamma of outside end sword 224 is the burden, the relief angle delta of outside end sword 224 is the burden, makes cutter 100 when the cutting, has avoided the peak of first end sword 222 tip, promptly, becomes the point cutting process mode line extrusion, face grinding process mode to the reduction leaves the knife line on the work piece.

In this embodiment, the inclination angle α of the inner end blade 223 is 3 ° to 5 °, the clearance angle β of the inner end blade 223 is 6 ° to 10 °, the inclination angle γ of the outer end blade 224 is-3 ° to 0 °, and the clearance angle δ of the outer end blade 224 is-4 ° to-1 °.

Referring to fig. 1 and 2, in the present embodiment, the outer end edge 224 includes an outer rake surface 2241 and an outer smooth surface 2242 connected to the outer rake surface 2241. The inside end edge 223 includes inboard rake surface 2231 and connect in the inboard slick surface 2232 of inboard rake surface 2231, inboard rake surface 2231 reaches outside rake surface 2241 coplane, the length L of outside slick surface 2242 along the normal direction is 10% ~ 20% of core external diameter, the width W of outside slick surface 2242 along perpendicular normal direction is 6% ~ 12% of core external diameter.

In this embodiment, the first side edge 221 includes a first axial edge 225, a second axial edge 226, and a first radial edge 227 connected to the first axial edge 225 and the second axial edge 226, the first axial edge 225 and the second axial edge 226 are parallel to the central axis a, and the first radial edge 227 is perpendicular to the central axis a.

In this embodiment, the cutting portion 20 further includes a second blade body 23, the second blade body 23 includes a second side blade 231 and the second end blade 232, the second side blade 231 includes a third axial blade 233, a fourth axial blade 234, and a second radial blade 235 connected to the third axial blade 233 and the fourth axial blade 234, the third axial blade 233 and the fourth axial blade 234 are parallel to the central axis a, the second radial blade 235 is inclined from the central axis a, and the second blade body 23 and the first blade body 22 are alternately disposed on the outer periphery of the core body 21. The second end edge 232 is identical to the first end edge 222.

In this embodiment, a first chip groove 228 is provided between the first end blade 222 and the second end blade 232, a second chip groove 24 is provided between two adjacent first blade bodies 22 and second blade bodies 23, and the first chip groove 228 communicates with the second chip groove 24.

In this embodiment, the material of the cutting tool 100 is cemented carbide or ceramic.

In this embodiment, the holder 10 has a substantially conical shape, the holder 10 includes a first end portion 11 and a second end portion 12 opposite to the first end portion 11, a projection of the second end portion 12 along the central axis a is located in the first end portion 11, and the core 21 is connected to the second end portion 12.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A cutter is used for milling a workpiece to form a groove body and is characterized by comprising a cutter handle and a cutting part connected with the cutter handle, wherein the cutting part comprises a core body and a first blade body, the core body is connected with the cutter handle, the first blade body is spirally arranged on the periphery of the core body,

the first blade body comprises a first side blade and an end blade, the end blade is distributed on one side, away from the tool handle, of the first blade body along a central axis perpendicular to the core body, the first side blade is distributed on one side, away from the core body, of the first blade body, the side blade is used for milling the workpiece to form a side face of the groove body, and the end blade is used for milling the workpiece to form a bottom face of the groove body;

the end blade comprises an inner side end blade and an outer side end blade connected with the inner side end blade, the inner side end blade is close to the central axis, the inclination angle of the inner side end blade is positive, the back angle of the inner side end blade is positive, the inclination angle of the outer side end blade is negative, and the back angle of the outer side end blade is negative.

2. The tool according to claim 1, wherein the inner end edge has an inclination angle of 3 ° to 5 °, the inner end edge has a relief angle of 6 ° to 10 °, the outer end edge has an inclination angle of-3 ° to 0 °, and the outer end edge has a relief angle of-4 ° to-1 °.

3. The tool according to claim 1, wherein the outer end edge includes an outer rake surface and an outer flat surface connected to the outer rake surface, the inner end edge includes an inner rake surface and an inner flat surface connected to the inner rake surface, the inner rake surface and the outer rake surface are coplanar, the outer flat surface has a length in a normal direction of 10% to 20% of the outer diameter of the core, and the outer flat surface has a width in a normal direction of 6% to 12% of the outer diameter of the core.

4. The tool of claim 1, wherein the first side edge includes a first axial edge, a second axial edge, and a first radial edge connected to the first axial edge and the second axial edge, the first axial edge and the second axial edge being parallel to the central axis, the first radial edge being perpendicular to the central axis.

5. The tool according to claim 1, wherein the cutting portion further includes a second blade body, the second blade body includes a second side blade and the end blade, the second side blade includes a third axial blade, a fourth axial blade, and a second radial blade connected to the third axial blade and the fourth axial blade, the third axial blade and the fourth axial blade are parallel to the central axis, the second radial blade is inclined from the central axis, and the second blade body and the first blade body are alternately disposed on an outer periphery of the core body.

6. The tool according to claim 5 wherein a first flute is provided between adjacent said end edges and a second flute is provided between adjacent said first and second blade bodies, said first flutes and said second flutes being in communication.

7. The tool according to claim 1, wherein the tool is made of cemented carbide or ceramic.

8. The tool according to claim 1, wherein the shank includes a first end and a second end opposite the first end, a projection of the second end in the direction of the central axis being located in the first end, the core being connected to the second end.