CN219112987U - Milling cutter - Google Patents
Milling cutter Download PDFInfo
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- CN219112987U CN219112987U CN202223003927.XU CN202223003927U CN219112987U CN 219112987 U CN219112987 U CN 219112987U CN 202223003927 U CN202223003927 U CN 202223003927U CN 219112987 U CN219112987 U CN 219112987U
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- milling cutter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
This application is applicable to cutter technical field, and this application provides a milling cutter, including the handle of a knife and connect in the cutter body of handle of a knife, milling cutter still includes: the cutting edges are arranged on the cutter body at intervals and extend along the axial direction of the cutter body, and the cutting edges are spiral; at least one chip breaking blade extending along the axial direction of the cutter body, wherein the chip breaking blade is in a spiral shape; 0-5 chip breaking edges are arranged between two adjacent cutting edges, and the diameter of each cutting edge is larger than that of each chip breaking edge; the milling cutter that this application provided has realized simultaneously satisfying rigidity, sharpness and chip removal performance's of milling cutter purpose through the combined design of cutting edge and chip breaking sword, has increased milling cutter life, has promoted chip removal ability, has improved dimensional accuracy, and the practicality is strong.
Description
Technical Field
The application relates to the technical field of cutters, in particular to a milling cutter.
Background
In recent years, with the development of electronic information technology and new materials, the processing size of printed circuit board molding processing is finer and finer, the requirements on processing size precision, board edge quality and processing efficiency are higher and higher, the diameter of a cutter is smaller and smaller, and the problems of out-of-tolerance in the size of a processed workpiece, burrs on the board edge, short service life of the cutter, difficult chip removal and the like easily occur in the process of the printed circuit board molding processing, and particularly, the problems are more prominent after the thickness of a laminated board is increased for improving the processing efficiency.
The main factors influencing the dimensional accuracy of the machined workpiece, the quality of the plate edges, the service life of the cutter and the chip removal condition are as follows: 1. the sharpness of the cutting edge, 2, the rigidity of the milling cutter; 3. chip removal capability of milling cutter.
Under the condition of using similar milling cutter materials, the structural design of the milling cutter determines the sharpness, rigidity and chip removal capability of the milling cutter, wherein the core diameter of the milling cutter determines the rigidity of the milling cutter and the bending deformation and fracture resistance in the processing process, and the milling cutter has obvious influence on the dimensional precision of a processed workpiece, the quality of a plate edge and the service life of a cutter. Under the condition of the same machine tool processing parameters and dust suction force, the chip removal performance of the milling cutter is determined by the structural design of the chip removal groove of the milling cutter, such as the size of the cross section and the chip removal force generated when the cutter rotates, so that the chip removal, plate edge burrs, cutter abrasion and service life of the milling cutter are obviously influenced in the processing process. The front and rear angles of the cutting edge of the milling cutter determine the cutting sharpness and wear resistance of the cutter, so that the cutting force and friction heating conditions in the machining process are influenced, and the service life of the milling cutter, chip removal, the size precision of a machined workpiece and the quality of a plate edge are further influenced.
Conventional milling cutters typically have 2-9 cutting edges evenly distributed. The milling cutter with fewer cutting edges has the advantages that the formed milling cutter has smaller core thickness and larger chip removal space, such as a double-edge milling cutter, the double-edge milling cutter has small core diameter, large chip removal space and good chip removal performance, but the milling cutter has insufficient rigidity; when the number of the cutting edges is large, a milling cutter with large core thickness and small chip removal space, such as a seven-edge milling cutter, is formed, the seven-edge milling cutter has large core diameter, small chip removal space, poor chip removal performance and strong rigidity.
Disclosure of Invention
In view of the above problems, the present application provides a milling cutter, which at least solves the problem that the milling cutter in the prior art cannot achieve both rigidity and chip removal performance.
The embodiment of the application provides a milling cutter, including the handle of a knife and connect in the cutter body of handle of a knife, milling cutter still includes:
the cutting edges are arranged on the cutter body at intervals and extend along the axial direction of the cutter body, and the cutting edges are spiral;
at least one chip breaking blade extending along the axial direction of the cutter body, wherein the chip breaking blade is in a spiral shape;
and 0-5 chip breaking edges are arranged between two adjacent cutting edges, and the diameter of each cutting edge is larger than that of each chip breaking edge.
In one embodiment, the difference between the diameter of the cutting edge and the diameter of the chip breaking edge is greater than or equal to 0.04mm.
In one embodiment, the diameter of the cutting edge ranges from 0.4mm to 3.0mm.
In one embodiment, the diameter of the cutting edge ranges from 0.6mm to 1.6mm.
In one embodiment, the core diameter of the cutting edge is smaller than the core diameter of any of the chip breaking edges.
In one embodiment, the number of the cutting edges is 2-8; and 1-3 chip breaking edges are arranged between two adjacent cutting edges.
In an embodiment, the angle difference between the helix angle of the chip breaking edge and the helix angle of the cutting edge ranges from-5 ° to +5°.
In one embodiment, the angle of the helix angle of the cutting edge is in the range of 0 ° to 55 °.
In one embodiment, the angle of the helix angle of the cutting edge is in the range of 20 ° to 35 °.
In an embodiment, a tip is arranged at one end of the cutter body away from the cutter handle, and the tip is any one of a flat-bottom tip, a fish-tail tip or a drill tip;
the rotation direction of the milling cutter is any one of left-handed cutting, left-handed right-handed cutting, right-handed left-handed cutting and right-handed cutting;
the milling cutter is any one of a spiral milling cutter, a diamond-shaped milling cutter and a chip breaker type milling cutter.
The milling cutter in the prior art is improved in design aiming at the problem that rigidity and chip removal performance cannot be considered, and has the following beneficial effects:
1. the cutting edges and the chip breaking edges are arranged at intervals, and a plurality of chip breaking edges can be arranged between two adjacent cutting edges so as to ensure chip removal performance;
2. the diameter of the cutting edge is larger than that of the chip breaking edge, even if the height difference exists between the cutting edge and the chip breaking edge, the effect of twice milling in one stroke is realized, and the cutting precision is improved;
according to the combined design of the cutting edge and the chip breaking edge, the purposes of simultaneously meeting the rigidity, sharpness and chip removal performance of the milling cutter are achieved, the service life of the milling cutter is prolonged, the chip removal capacity is improved, the size precision is improved, and the practicality is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic front view of a milling cutter according to an embodiment of the present application.
Fig. 2 is a schematic front view of the milling cutter shown in fig. 1 in an embodiment.
Fig. 3 is a schematic side view of the cutter body shown in fig. 2.
Fig. 4 is a second schematic side view of the cutter body shown in fig. 2.
Fig. 5 is a schematic front view of the cutter body of the milling cutter shown in fig. 1 in another embodiment.
Fig. 6 is a schematic side view of the cutter body shown in fig. 5.
Fig. 7 is a second schematic side view of the cutter body shown in fig. 5.
Fig. 8 is a side view of a flat-bottom nose in the milling cutter shown in fig. 1.
Fig. 9 is a side view of the fishtail cutter point of the milling cutter shown in fig. 1.
Fig. 10 is a side view of the point tip of the milling cutter shown in fig. 1.
The meaning of the labels in the figures is:
100. a milling cutter;
10. a knife handle;
20. a cutter body; 201. a knife tip; 21. a cutting edge; 22. a chip breaking blade; 221. a first chip breaking blade; 222. a second chip breaking blade; 23. a chip removal groove;
d. the diameter of the cutting edge; dc. The core diameter of the cutting edge; d1, diameter of the first chip breaking edge; dc1, the core diameter of the first chip breaking edge; d2, the diameter of the second chip breaking edge; dc2, the core diameter of the second chip breaking edge.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings, i.e. embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper," "lower," "left," "right," and the like are used for convenience of description based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the devices or elements in question must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting of the patent. The terms "first," "second," and "second" 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. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.
It should be further noted that, in the embodiments of the present application, the same reference numerals denote the same components or the same parts, and for the same parts in the embodiments of the present application, reference numerals may be given to only one of the parts or the parts in the drawings by way of example, and it should be understood that, for other same parts or parts, the reference numerals are equally applicable.
Under the condition of using similar milling cutter materials, the structural design of the milling cutter determines the sharpness, rigidity and chip removal capability of the milling cutter, wherein the core diameter of the milling cutter determines the rigidity of the milling cutter and the bending deformation and fracture resistance in the processing process, and the milling cutter has obvious influence on the dimensional precision of a processed workpiece, the quality of a plate edge and the service life of a cutter. Under the condition of the same machine tool processing parameters and dust suction force, the chip removal performance of the milling cutter is determined by the structural design of the chip removal groove of the milling cutter, such as the size of the cross section and the chip removal force generated when the cutter rotates, so that the chip removal, plate edge burrs, cutter abrasion and service life of the milling cutter are obviously influenced in the processing process. The front and rear angles of the cutting edge of the milling cutter determine the cutting sharpness and wear resistance of the cutter, so that the cutting force and friction heating conditions in the machining process are influenced, and the service life of the milling cutter, chip removal, the size precision of a machined workpiece and the quality of a plate edge are further influenced.
Conventional milling cutters typically have 2-9 cutting edges evenly distributed. The milling cutter with fewer cutting edges has the advantages that the formed milling cutter has smaller core thickness and larger chip removal space, such as a double-edge milling cutter, the double-edge milling cutter has small core diameter, large chip removal space and good chip removal performance, but the milling cutter has insufficient rigidity; when the number of the cutting edges is large, a milling cutter with large core thickness and small chip removal space, such as a seven-edge milling cutter, is formed, the seven-edge milling cutter has large core diameter, small chip removal space, poor chip removal performance and strong rigidity.
The utility model provides a milling cutter from this, through making cutting edge and the combination of chip breaking sword and set up the difference in height between cutting edge and chip breaking sword, realized satisfying the rigidity, sharpness and the purpose of chip removal performance of milling cutter simultaneously, increased milling cutter life, promoted chip removal ability, improved dimensional accuracy.
Referring to fig. 1 to 4, a milling cutter 100 provided in an embodiment of the present application includes a shank 10, a cutter body 20, and one end of the cutter body 20 is connected to the shank 10.
The milling cutter 100 provided in the embodiment of the present application further includes a cutting edge 21 and a chip breaking edge 22 provided on the cutter body 20.
The cutting edge 21 extends in the axial direction of the cutter body 20, and the cutting edge 21 is helical, i.e., the cutting edge 21 extends helically from the distal end of the cutter body 20 toward the tip; the cutting edges 21 are a plurality of, and a plurality of cutting edges 21 are arranged on the cutter body 20 at intervals, and the cutting edges 21 are used for carrying out primary milling on the PCB.
The chip breaking blade 22 extends along the axial direction of the cutter body 20, and the chip breaking blade 22 is spiral; at least one chip breaking edge 22, namely one or more chip breaking edges 22 are arranged, and a plurality of chip breaking edges 22 are arranged on the cutter body 20 at intervals; the diameter of the chip breaking blade 22 is smaller than the diameter d of the cutting blade 21, i.e. the height of the chip breaking blade 22 is smaller than the height of the cutting blade 21, and in the milling process, the cutting blade 21 is in contact with the PCB board before the chip breaking blade 22, and the chip breaking blade 22 is used for performing a second milling process on the PCB board after the cutting blade 21, so that the milling cutter 100 can realize a process of repeating the milling process twice only with one stroke.
The chip breaking blade 22 having a height different from that of the cutting blade 21 can deform and break chips to achieve the chip breaking effect, in addition to the secondary milling.
Between two adjacent cutting edges 21, 0-5 chip breaking edges 22 are arranged, and it can be understood that the number of the chip breaking edges 22 between different adjacent cutting edges 21 can be the same or different; the number of the chip breaking edges 22 between the adjacent cutting edges 21 may be 5, or may be 4, 3, or 1, and the chip breaking edges 22 may not exist between any two adjacent cutting edges 21 on the premise of ensuring that at least one chip breaking edge 22 exists on the cutter body 20.
The beneficial effects of this embodiment lie in: the cutting edges 21 and the chip breaking edges 22 are arranged at intervals, and a plurality of chip breaking edges 22 can be arranged between two adjacent cutting edges 21 so as to ensure chip removal performance; the diameter d of the cutting edge 21 is larger than the diameter of the chip breaking edge 22, even if the height difference exists between the cutting edge 21 and the chip breaking edge 22, the effect of twice milling in one stroke is realized, and the cutting precision is improved.
According to the milling cutter 100 provided by the embodiment of the application, through the combined design of the cutting edge 21 and the chip breaking edge 22, the purposes of simultaneously meeting the rigidity, sharpness and chip removal performance of the milling cutter 100 are achieved, the service life of the milling cutter 100 is prolonged, the chip removal capacity is improved, and the dimensional accuracy is improved.
In this embodiment, chip grooves 23 are formed between adjacent chip breaking edges 22 and between the chip breaking edges 22 and adjacent cutting edges 21 to cooperate with the chip breaking edges 22 to realize deformation of chips, thereby achieving the chip breaking effect.
In an embodiment, the angle difference of the helix angle of the chip breaking edge 22 and the cutting edge 21 ranges from-5 ° to +5°, and the setting adjusts the rake angle and the relief angle of the milling cutter 100 by adjusting the helix angle of the chip breaking edge 22 to ensure sharpness and wear resistance of the milling cutter 100.
In this embodiment, the angle of the helix angle of the cutting edge 21 ranges from 0 ° to 55 °; optionally, the angle of the helix angle of the cutting edge 21 is 0 °, 20 °, 27.5 °, 30 °, 40 °, 55 °, etc.
Further, the angle of the helix angle of the cutting edge 21 is in the range of 20 ° to 35 °; optionally, the angle of the helix angle of the cutting edge 21 is 20 °, 23 °, 27.5 °, 30 °, 35 °, etc.
In one embodiment, the number of cutting edges 21 is 2 to 8, and the number of chip breaking edges 22 between two adjacent cutting edges 21 is 1 to 3.
Referring to fig. 2 to 4, in an embodiment, the number of cutting edges 21 is 2, the number of chip breaking edges 22 between two adjacent cutting edges 21 is 2, and the two chip breaking edges 22 are referred to as a first chip breaking edge 221 and a second chip breaking edge 222, respectively.
In the present embodiment, the difference between the diameter d of the cutting edge 21 and the diameter of the chip breaking edge 22 is greater than or equal to 0.04mm, i.e., the difference between the height of the cutting edge 21 and the height of the chip breaking edge 22 is greater than or equal to 0.02mm; in some embodiments, the diameter d2 of the second chip-breaking edge 222 is not equal to the diameter d1 of the first chip-breaking edge 221, and the difference between the diameter d1 of the first chip-breaking edge 221 and the diameter d2 of the second chip-breaking edge 222 and the diameter d of the cutting edge 21 is greater than or equal to 0.04mm; optionally, the diameter d2 of the second chip breaking edge 222 is larger than the diameter d1 of the first chip breaking edge 221.
In this embodiment, the diameter d of the cutting edge 21 is in the range of 0.4mm to 3.0mm, alternatively, the diameter d of the cutting edge 21 is 0.4mm, 1mm, 1.7mm, 2mm, 3.0mm, or the like.
Further, the diameter d of the cutting edge 21 is in the range of 0.6mm to 1.6mm, alternatively, the diameter d of the cutting edge 21 is 0.6mm, 0.8mm, 1.1mm, 1.3mm, 1.6mm, or the like.
In the present embodiment, the core diameter Dc of the cutting edge 21 is smaller than the core diameter of any one of the chip breaking edges 22, i.e., the core diameter of any one of the chip breaking edges 22 is larger than the core diameter Dc of the cutting edge 21.
Specifically, the core diameter Dc of the cutting edge 21 is smaller than the core diameter Dc1 of the first chip breaking edge 221, and the core diameter Dc of the cutting edge 21 is smaller than the core diameter Dc2 of the second chip breaking edge 222, which arrangement makes the chip breaking edge 22 have a larger core diameter, thereby ensuring the strength of the chip breaking edge 22; optionally, the core diameter Dc2 of the second chip breaking edge 222 is larger than the core diameter Dc1 of the first chip breaking edge 221.
Referring to fig. 5 to 7, in another embodiment, the number of cutting edges 21 is 3, the number of chip breaking edges 22 between two adjacent cutting edges 21 is 1, and the chip breaking edges 22 are referred to as first chip breaking edges 221.
In the present embodiment, the difference between the diameter d of the cutting edge 21 and the diameter of the chip breaking edge 22 is greater than or equal to 0.04mm, specifically, the difference between the diameter d of the cutting edge 21 and the diameter d1 of the first chip breaking edge 221 is greater than or equal to 0.04mm, that is, the difference between the height of the cutting edge 21 and the height of the first chip breaking edge 221 is greater than or equal to 0.02mm.
In this embodiment, the diameter d of the cutting edge 21 is in the range of 0.4mm to 3.0mm, alternatively, the diameter d of the cutting edge 21 is 0.4mm, 1mm, 1.7mm, 2mm, 3.0mm, or the like.
Further, the diameter d of the cutting edge 21 is in the range of 0.6mm to 1.6mm, alternatively, the diameter d of the cutting edge 21 is 0.6mm, 0.8mm, 1.1mm, 1.3mm, 1.6mm.
In the present embodiment, the core diameter Dc of the cutting edge 21 is smaller than the core diameter Dc of the chip breaking edge 22, i.e., the core diameter Dc1 of the first chip breaking edge 221 is larger than the core diameter Dc of the cutting edge 21, and this arrangement makes the chip breaking edge 22 have a larger core diameter, thereby ensuring the strength of the chip breaking edge 22.
It will be appreciated that the core diameter Dc of the cutting edge 21, the diameter d of the cutting edge 21, the core diameter of the chip breaking edge 22, the diameter parameters of the chip breaking edge 22 and the interrelation are not limited to embodiments in which the number of cutting edges 21 is 2 or 3, and the number of chip breaking edges 22 between adjacent cutting edges 21 is 1 or 2.
Referring to fig. 8 to 10, in one embodiment, the end of the cutter body 20 remote from the cutter handle 10 is provided with a cutter tip 201, and when the milling cutter 100 is milled, the cutter tip 201 is first contacted with the PCB board.
Referring to fig. 8, in one embodiment, the tip 201 is a flat-bottomed tip for rough or finish milling, grooving, blank removal, and finish milling of small horizontal planes or contours.
Referring to fig. 9, in another embodiment, the tip 201 is a fishtail tip, and the teeth of the fishtail tip 201 are larger than the teeth of the teeth, so that the chip removing performance is better.
Referring to fig. 10, in yet another embodiment, the nose 201 is a point-type nose to facilitate drilling and milling.
It will be appreciated that the cutting tip 201 of the milling cutter 100 according to the present embodiment is not limited to the flat-bottom type cutting tip, the fish-tail type cutting tip or the drill tip.
The milling cutter 100 provided in the present application may be a helical milling cutter, a diamond milling cutter, a chip breaker type milling cutter, or may be other various milling cutters.
The milling cutter 100 provided by the application can be a left-handed tangential direction, and can also be a left-handed right-handed tangential direction, a right-handed left-handed tangential direction and a right-handed tangential direction.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (10)
1. A milling cutter, including handle of a knife and connect in the cutter body of handle of a knife, its characterized in that, milling cutter still includes:
a plurality of cutting edges which are arranged on the cutter body at intervals and extend along the axial direction of the cutter body, wherein the cutting edges are spiral;
at least one chip breaking blade extending along the axial direction of the cutter body, wherein the chip breaking blade is in a spiral shape;
and 1-5 chip breaking edges are arranged between two adjacent cutting edges, and the diameter of each cutting edge is larger than that of each chip breaking edge.
2. The milling cutter according to claim 1, wherein the difference between the diameter of the cutting edge and the diameter of the chip breaking edge is greater than or equal to 0.04mm.
3. The milling cutter according to claim 1 or 2, wherein the diameter of the cutting edge ranges from 0.4mm to 3.0mm.
4. A milling cutter according to claim 3, wherein the diameter of the cutting edge ranges from 0.6mm to 1.6mm.
5. The milling cutter according to claim 1, wherein the core diameter of the cutting edge is smaller than the core diameter of any one of the chip breaking edges.
6. The milling cutter according to claim 1, wherein the number of cutting edges is 2-8; and 1-3 chip breaking edges are arranged between two adjacent cutting edges.
7. The milling cutter according to claim 1, wherein the angle difference between the helix angle of the chip breaking edge and the helix angle of the cutting edge ranges from-5 ° to +5°.
8. The milling cutter according to claim 1 or 7, wherein the angle of the helix angle of the cutting edge is in the range of 0 ° to 55 °.
9. The milling cutter according to claim 8, wherein the angle of the helix angle of the cutting edge is in the range of 20 ° to 35 °.
10. The milling cutter according to claim 1, wherein the end of the cutter body away from the cutter handle is provided with a cutter tip, and the cutter tip is any one of a flat-bottom cutter tip, a fish-tail cutter tip or a drill tip cutter tip;
the rotation direction of the milling cutter is any one of left-handed cutting, left-handed right-handed cutting, right-handed left-handed cutting and right-handed cutting;
the milling cutter is any one of a spiral milling cutter, a diamond-shaped milling cutter and a chip breaker type milling cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223003927.XU CN219112987U (en) | 2022-11-10 | 2022-11-10 | Milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223003927.XU CN219112987U (en) | 2022-11-10 | 2022-11-10 | Milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219112987U true CN219112987U (en) | 2023-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223003927.XU Active CN219112987U (en) | 2022-11-10 | 2022-11-10 | Milling cutter |
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| Country | Link |
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| CN (1) | CN219112987U (en) |
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2022
- 2022-11-10 CN CN202223003927.XU patent/CN219112987U/en active Active
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