CN216758307U

CN216758307U - Cutting tool

Info

Publication number: CN216758307U
Application number: CN202122725115.5U
Authority: CN
Inventors: 张清平; 庄景亮; 肖旭
Original assignee: Shenzhenshi Yuzhan Precision Technology Co Ltd
Current assignee: Fulian Yuzhan Technology Shenzhen Co Ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-06-17
Anticipated expiration: 2031-11-09

Abstract

The utility model provides a cutter, which comprises a handle part and a cutting part arranged at one end of the handle part, wherein the cutting part comprises first cutter teeth, a first cutter blade and a second cutter blade, wherein the first cutter teeth protrude out of the outer wall surface of the handle part and form a positive first included angle with the central axis of the handle part, and the first cutter teeth are provided with first cutting edges for milling workpieces; the second cutter tooth protrudes out of the outer wall surface of the handle part, is a reverse second included angle with the central axis of the handle part and is arranged at an interval with the first cutter tooth, and the second cutter tooth is provided with a second cutting edge which is opposite to the first cutting edge and used for milling a workpiece. The cutter is provided with the first cutter tooth and the second cutter tooth, the first cutter tooth and the central axis of the handle part form a forward first included angle, and the second cutter tooth and the central axis of the handle part form a reverse second included angle, so that high-frequency resonance during machining can be effectively reduced, and the vibration cutter marks on the outer side are improved; by setting different cutting edge shapes, the cutter can obtain a workpiece with an adaptive shape after processing without changing the cutter.

Description

Cutting tool

Technical Field

The utility model relates to the technical field of machining, in particular to a cutter.

Background

The existing cutter mainly mills the surface of a workpiece to form a curved surface structure or a plane structure, and for some curved surface + plane composite structures, the existing cutter needs to pass through a plurality of procedures during processing, such as processing the curved surface structure first, then processing a straight surface structure and the like for repeated processing, the cutter changing operation process is complex, and the processing efficiency and the quality of the workpiece are lower.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned circumstances, it is desirable to provide a tool to solve the technical problems of low machining efficiency and low workpiece quality in the conventional tool during machining.

The utility model provides a cutter, which comprises a handle part and an edge part arranged at one end of the handle part, wherein the edge part comprises:

the first cutter tooth protrudes out of the outer wall surface of the handle part and forms a positive first included angle with the central axis of the handle part, and the first cutter tooth is provided with a first cutting edge for milling a workpiece;

the second cutter tooth protrudes out of the outer wall surface of the handle part, is a reverse second included angle with the central axis of the handle part and is arranged at an interval with the first cutter tooth, and the second cutter tooth is provided with a second cutting edge which is opposite to the first cutting edge and used for milling a workpiece.

In some embodiments, the first tooth comprises a first cutting portion and a first supporting portion connected, the first cutting edge is arranged on the first cutting portion, and the first supporting portion is provided with a first transition port communicated and matched with the first cutting edge;

the second cutter tooth comprises a second cutting part and a second supporting part which are connected, the second cutting edge is arranged on the second cutting part, and a second transition port matched with the second cutting edge in a communicating mode is formed in the second supporting part.

In some embodiments, the blade portion includes two first cutter teeth and two second cutter teeth, and one first cutter tooth is disposed adjacent to one second cutter tooth.

In some embodiments, the blade further includes a flute between adjacent first and second cutter teeth.

In some embodiments, the first included angle ranges from 10 ° to 20 °, the second included angle ranges from-20 ° to-10 °, and the sum of the first included angle and the second included angle is zero.

In some embodiments, the first transition has a first end proximate the first cutting edge and a second end distal the first cutting edge, the first end of the first transition being smaller in size than the second end;

the second transition port has a third end near the second cutting edge and a fourth end far from the second cutting edge, and the size of the third end of the second transition port is smaller than that of the fourth end.

In some embodiments, a non-perpendicular first plane and second plane are included, the first plane being a plane passing through the axis of the tool and the end of the first cutting portion distal from the shank, and the second plane being a plane passing through the axis of the tool and the end of the second cutting portion distal from the shank.

In some embodiments, the included angles between the adjacent first planes and the second planes are 87 °, 93 °, 87 ° and 93 ° in sequence.

In some embodiments, the cutting edges of the first and second cutting portions are less than 0.01mm in size.

In some embodiments, a pair of knife portions is protruded from an end of the blade portion away from the handle portion for knife setting.

The cutter is provided with the first cutter tooth and the second cutter tooth, the first cutter tooth and the central axis of the handle part form a forward first included angle, and the second cutter tooth and the central axis of the handle part form a reverse second included angle, so that high-frequency resonance during machining can be effectively reduced, and the vibration cutter marks on the outer side are improved; by setting different cutting edge shapes, the cutter can obtain a workpiece with an adaptive shape after processing without changing the cutter.

Drawings

Fig. 1 is a schematic structural diagram of a tool and a machined workpiece according to an embodiment of the present invention.

Fig. 2 is a perspective view of the tool of fig. 1 at an angle.

Fig. 3 is a perspective view of the tool of fig. 1 at another angle.

Fig. 4 is a perspective view of the tool of fig. 1 at yet another angle.

Description of the main elements

Cutting tool 100

Workpiece 200

3D curved surface structure 210

Planar structure 220

Handle 10

Blade part 20

First cutter tooth 22

First cutting edge 221

First cutting portion 222

The first support part 223

First transition port 224

Second cutter tooth 24

Second cutting edge 241

Second cutting portion 242

Second supporting part 243

Second transition 244

Chip groove 30

Knife aligning part 40

First included angle beta 1

Second included angle beta 2

Central axis L

First plane H1

Second plane H2

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The utility model provides a cutter, which comprises a handle part and a cutting part arranged at one end of the handle part, wherein the cutting part comprises a first cutter tooth and a second cutter tooth, the first cutter tooth protrudes out of the outer wall surface of the handle part and forms a positive first included angle with the central axis of the handle part, and the first cutter tooth is provided with a first cutting edge for milling a workpiece; the second cutter tooth protrusion in the outer wall of stalk portion, with the axis of stalk portion is reverse second contained angle and with first cutter tooth interval sets up, the second cutter tooth be equipped with the second blade that is used for milling the work piece that first blade is relative.

The cutter is provided with the first cutter tooth and the second cutter tooth, the first cutter tooth and the central axis of the handle part form a forward first included angle, and the second cutter tooth and the central axis of the handle part form a reverse second included angle, so that high-frequency resonance during machining can be effectively reduced, and generation of tool vibration lines on the machined surface can be improved; by setting different cutting edge shapes, the cutter can obtain a workpiece with an adaptive shape after processing without changing the cutter.

The embodiments of the present application will be further described with reference to the accompanying drawings.

Referring to fig. 1, the present invention provides a tool 100 for milling a workpiece 200, in the embodiment, the workpiece 200 includes two 3D curved structures 210 and a planar structure 220, and the planar structure 220 is connected between the two 3D curved structures 210.

Referring to fig. 2 and 3, the cutting tool 100 includes a shank 10 and a blade portion 20 disposed at one end of the shank 10, the blade portion 20 includes a first tooth 22 and a second tooth 24, the first tooth 22 protrudes out of an outer wall surface of the shank 10, and forms a forward first included angle β 1 with a central axis L of the shank 10, that is, an included angle formed by forward rotation of a plane where the first tooth 22 is located to coincide with the central axis L, and the first tooth 22 is provided with a first cutting edge 221 for milling the workpiece 200; the second cutter tooth 24 protrudes out of the outer wall surface of the handle 10, and forms a reverse second included angle β 2 with the central axis L of the handle 10, that is, the plane where the second cutter tooth 24 is located reversely rotates to the included angle coinciding with the central axis L, the second cutter tooth 24 and the first cutter tooth 22 are arranged at intervals, and the second cutter tooth 24 is provided with a second cutting edge 241 opposite to the first cutting edge 221 and used for milling the workpiece 200.

In some embodiments, the first tooth 22 includes a first cutting portion 222 and a first supporting portion 223 connected, the first cutting edge 221 is disposed on the first cutting portion 222, and the first supporting portion 223 is disposed with a first transition opening 224 adapted to communicate with the first cutting edge 221.

As such, the first cutting portion 222 may mill the workpiece 200, the first support portion 223 may provide support while the first cutting portion 222 mills, and the first transition port 224 is used for cutting transition and clearance. In the present embodiment, the first cutter tooth 22 is a left-hand cutting structure.

The second cutter tooth 24 includes a second cutting portion 242 and a second supporting portion 243 connected with each other, the second cutting edge 241 is disposed on the second cutting portion 242, and the second supporting portion 243 is disposed with a second transition opening 244 adapted to communicate with the second cutting edge 241.

As such, the second cutting portion 242 may mill the workpiece 200, the second support portion 243 may provide support when the second cutting portion 242 mills, and the second transition port 244 is used for cutting transition and clearance. In the present embodiment, the second cutter tooth 24 is a right-cutting structure.

In some embodiments, the first included angle β 1 may be an included angle between the plane of the first cutting edge 221 and the central axis L of the handle 10, and is set to be 10 ° to 20 °, the second included angle β 2 may be an included angle between the plane of the second cutting edge 241 and the central axis L of the handle 10, and is set to be-20 ° to-10 °, and the sum of the first included angle β 1 and the second included angle β 2 is zero. In the embodiment, the first included angle β 1 is preferably 15 °, and the second included angle β 2 is-15 °, so that the problem of high-frequency resonance during processing can be effectively reduced, and the generation of tool vibration lines on the processing surface can be improved.

In some embodiments, the blade 20 includes two first cutter teeth 22 and two second cutter teeth 24, and a first cutter tooth 22 is disposed adjacent to a second cutter tooth 24, i.e., the first cutter tooth 22 is disposed alternately with a second cutter tooth 24, so that the design of four cutter teeth can generate stable milling force, thereby stably milling the workpiece 200. It is understood that in other embodiments, three first cutter teeth 22 and three second cutter teeth 24 may be provided, but are not limited thereto.

In some embodiments, the blade 20 further includes a junk slot 30, the junk slot 30 being located between the adjacent first tooth 22 and the second tooth 24, as shown in fig. 2, the junk slot 30 communicating the second transition opening 244 of the first tooth 22 with the first edge 221 of the second tooth 24; as shown in fig. 3, the chip discharge groove 30 communicates with the first transition opening 224 of the first tooth 22 and the second transition opening 244 of the second tooth 24, and the chip discharge groove 30 can discharge the machining chips guided from the first transition opening 224 and the second transition opening 244.

In some embodiments, the first transition 224 has a first end proximate the first cutting edge 221 and a second end distal the first cutting edge 221, the first end of the first transition 224 being smaller in size than the second end. Second transition opening 244 has a third end proximate second cutting edge 241 and a fourth end distal from second cutting edge 241, the third end of second transition opening 244 being smaller in size than the fourth end such that first transition opening 224 and second transition opening 244 are shaped to facilitate channeling of machining debris.

Referring to fig. 4, in some embodiments, the first plane H1 and the second plane H2 are non-perpendicular, and the included angle between the adjacent first plane H1 and second plane H2 is not equal, the first plane H1 is a plane passing through the central axis L of the tool 100 and the end of the first cutting portion 222 away from the shank 10, and the second plane H2 is a plane passing through the central axis L of the tool 100 and the end of the second cutting portion 242 away from the shank 10. In some embodiments, the included angles between the adjacent first plane H1 and the second plane H2 are 87 °, 93 °, 87 ° and 93 °, so that the problem of high-frequency resonance during processing can be further effectively reduced. It is understood that in some embodiments, the included angles between the adjacent first plane H1 and second plane H2 are sequentially 88 °, 92 °, but not limited to.

In some embodiments, the shape of the machined surface and the profile of the cutting edge are directly affected by the contour of the tool 100, and the size of the cutting edges of the first cutting portion 222 and the second cutting portion 242 is smaller than 0.01mm, preferably 0.003-0.006mm in this embodiment, so that the problems of poor 3D cross-striations and the like of the workpiece 200 can be effectively solved.

In some embodiments, the end of the blade 20 away from the shank 10 is provided with a pair of tool portions 40, the pair of tool portions 40 have a substantially cylindrical configuration, and the center of the pair of tool portions 40 coincides with the center of the blade 20, so as to facilitate tool setting calibration after the tool is installed, and meet the machining requirements.

The implementation process of the tool 100 described above is as follows: the tool 100 is first clamped to the spindle of a machining device (e.g., CNC); then, the cutter part 40 is adjusted in the cutter; then, the cutter 100 is controlled to be close to the workpiece 200, and the first cutting edge 221 and the second cutting edge 241 are machined on the surface of the workpiece 200; the workpiece 200 as shown in fig. 1 is finally obtained.

The cutter 100 is provided with the first cutter tooth 22 and the second cutter tooth 24, the first cutter tooth 22 and the central axis L of the handle 10 form a forward first included angle beta 1, and the second cutter tooth 24 and the central axis L of the handle 10 form a reverse second included angle beta 2, so that high-frequency resonance during processing can be effectively reduced, and the problem of tool vibration on the processing surface can be solved; by setting different cutting edge shapes, the cutter 100 can obtain the workpiece 200 with the adaptive shape after processing without changing the cutter, thereby improving the production efficiency and the workpiece quality.

In addition, other modifications within the spirit of the utility model may occur to those skilled in the art, and such modifications are, of course, included within the scope of the utility model as claimed.

Claims

1. A cutting tool, comprising a shank portion and a cutting portion disposed at one end of the shank portion, the cutting portion comprising:

2. The tool according to claim 1, wherein the first tooth comprises a first cutting portion and a first supporting portion connected to each other, the first cutting edge is disposed on the first cutting portion, and the first supporting portion is provided with a first transition opening adapted to communicate with the first cutting edge;

3. The tool as in claim 2 wherein said blade portion includes two of said first teeth and two of said second teeth, one of said first teeth being disposed adjacent one of said second teeth.

4. The tool as in claim 3 wherein said blade portion further comprises a junk slot between adjacent ones of said first cutter teeth and said second cutter teeth.

5. The tool according to claim 1, wherein said first included angle ranges from 10 ° to 20 °, said second included angle ranges from-20 ° to-10 °, and a sum of said first included angle and said second included angle is zero.

6. The tool of claim 2 wherein the first transition has a first end proximate the first cutting edge and a second end distal the first cutting edge, the first end of the first transition being smaller in size than the second end;

7. A tool as set forth in claim 3 wherein a plane passing through the axis of the tool and the end of the first cutting portion remote from the shank portion is a first plane and a plane passing through the axis of the tool and the end of the second cutting portion remote from the shank portion is a second plane, the first and second planes being non-perpendicular to each other.

8. The tool according to claim 7,

the included angles between the adjacent first plane and the second plane are 87 degrees, 93 degrees, 87 degrees and 93 degrees in sequence.

9. The tool according to claim 2,

the cutting edge size of the first cutting part and the second cutting part is less than 0.01 mm.

10. The tool according to claim 1,

one end of the cutting part, which is far away from the handle part, is convexly provided with a pair of knife parts so as to carry out knife setting.