CN108971589B - PCD milling cutter for milling composite material - Google Patents
PCD milling cutter for milling composite material Download PDFInfo
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- CN108971589B CN108971589B CN201810607093.2A CN201810607093A CN108971589B CN 108971589 B CN108971589 B CN 108971589B CN 201810607093 A CN201810607093 A CN 201810607093A CN 108971589 B CN108971589 B CN 108971589B
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- milling
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- cutter
- blades
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- 238000003801 milling Methods 0.000 title claims abstract description 107
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 238000005520 cutting process Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 8
- 230000004323 axial length Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 6
- 238000003754 machining Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract 2
- 238000003825 pressing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/06—Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/18—Milling-cutters characterised by physical features other than shape with permanently-fixed cutter-bits or teeth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/40—Flutes, i.e. chip conveying grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2226/00—Materials of tools or workpieces not comprising a metal
- B23C2226/27—Composites, e.g. fibre reinforced composites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2226/00—Materials of tools or workpieces not comprising a metal
- B23C2226/31—Diamond
- B23C2226/315—Diamond polycrystalline [PCD]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention discloses a PCD milling cutter for milling composite materials, which belongs to the field of machining and comprises a milling cutter substrate, a cutter handle, two groups of blades and an end milling cutting edge, wherein the two groups of blades and the end milling cutting edge are arranged on the milling cutter substrate; the blades are divided into two groups, including two near-handle blades and two far-handle blades; the far handle blade and the near handle blade are opposite in inclination direction and equal in angle; the front cutter face of each group of blades is provided with a chip groove, a chip groove is arranged between the far handle blade and the near handle blade in each group, and the chip grooves have no overlapped part along the axial direction; the end milling blade can realize small cutting depth end milling, and the material of the end milling blade is a base material. The invention can realize small cutting depth end milling and peripheral milling, reduce the axial force during peripheral milling, and inhibit the defects of composite material layering, surface tearing, burrs and the like; the chip removal grooves can effectively remove chips and heat, the impact force of the PCD cutter blade is reduced by the blades inclined in opposite directions, and the service life of the PCD milling cutter is further prolonged.
Description
Technical Field
The invention relates to the field of machining, in particular to a PCD milling cutter for milling composite materials.
Background
The composite material is a material formed by combining two or more different substances in different modes, has the advantages of light weight, high strength, good chemical corrosion resistance and weather resistance and the like, and is widely applied to the fields of automobiles, aerospace, body-building equipment and the like. At present, the molding of composite material parts mainly adopts a near-net forming technology, however, the manufactured composite material is difficult to obtain accurate dimensional precision. Therefore, secondary processing is needed, and the composite material has the characteristics of high hardness, non-homogeneous structure and anisotropy and belongs to a typical difficult-to-process material.
If a common cutter is adopted for milling, the cutter is worn quickly. The rigidity and hardness of the whole hard alloy cutter are moderate, the cutter can be sharpened into various angles, the cutting force distribution can be controlled, but the wear resistance of the cutter is still insufficient for cutting composite materials. Due to the above-mentioned problems with the difficulty of machining, coated knives have been developed and widely used in milling of composite materials. However, the coated cutter also has the problem of coating falling off, once the coating falls off, the cutter is rapidly worn and fails, and the PCD (polycrystalline diamond) cutter does not have the problem, has long service life and high processing precision and becomes the first choice cutter for high-precision processing of composite materials.
The existing PCD cutter is manufactured in a mode that the inclination angles of the cutting edges are the same, only one surface of a machined surface can be guaranteed not to have the defects of layering and the like in the process of machining a composite material, and the other surface is easy to have the machining defects of layering, tearing, burrs and the like, so that the machining quality is influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention discloses a PCD milling cutter for milling composite materials, which adopts two groups of far-handle blades and near-handle blades arranged at opposite inclination angles, and a chip groove is arranged between each group of blades, so that the PCD milling cutter has smaller axial force when in work, thereby overcoming the defects in the prior art such as layering, tearing, burrs and the like generated in the process of milling the composite materials.
The invention is realized by the following steps:
a PCD milling cutter for milling composite materials comprises a milling cutter base body and a cutter handle connected with the milling cutter base body. The end, far away from the handle, of the milling cutter base body is provided with four milling cutter grooves, and each milling cutter groove is provided with a corresponding blade; the blades are respectively a first far handle blade, a first near handle blade, a second far handle blade and a second near handle blade.
The two groups of blades are obliquely arranged, the same angle is arranged between the two groups of blades and the central axis of the milling cutter base body, and the oblique directions of the blades in the same group are opposite; the design reduces impact force, prolongs the service life of the cutter, and inhibits the delamination of composite materials, surface peeling and burr generation.
A first chip discharge groove is formed between the first far-handle blade and the first near-handle blade; a second chip groove is formed between the second far-handle blade and the second near-handle blade; the first chip removal groove and the second chip removal groove are equal in length; the chip removal grooves are formed, so that the chip removal capacity is improved, the influence of chips on the cutter and the machined surface is reduced, and the service life of the cutter is further prolonged. The first chip groove and the second chip groove have no overlapped part along the axial direction of the milling cutter base body; the front of the main cutting edge of each of the two groups of blades is provided with a third chip groove, and the angle formed between the front cutter surface and the bottom surface of the chip groove is 90 degrees.
Further, the angle between the groove bottom surface of the third chip groove and the groove bottom surfaces of the first chip groove and the second chip groove is 90-135 degrees.
Furthermore, the length of the first chip groove and the second chip groove along the axial direction of the milling cutter base body is 0.5-1.5 mm.
Further, the inclination angles of the first far-handle blade and the second far-handle blade are right-inclined and 3-12 degrees respectively, and the inclination angles of the first near-handle blade and the second near-handle blade are left-inclined and-3-12 degrees respectively.
Further, the first distal handle blade is the same length as the second proximal handle blade; and the length is 4-8 mm. The first proximal handle blade and the second distal handle blade are the same in length; and differs in length from the first distal shank blade or the second proximal shank blade by the length of one flute.
Further, the head of the end of the handle far away from the milling cutter groove is provided with an end milling cutter edge. The end milling blade can realize small cutting depth end milling.
Furthermore, the end milling blade and the milling cutter base body are of an integrated structure, namely the material of the end milling blade is consistent with that of the milling cutter base body.
Compared with the prior art, the invention has the beneficial effects that:
1) the invention adopts the far handle blade and the near handle blade which are arranged in opposite inclination angles, when the blades are used for milling, the blades can generate downward pressing and upward pressing cutting component forces on the upper surface of the composite material at the same time, when a chip discharge groove between the far handle and the near handle blade is positioned at the central position of the side edge of the composite material, the downward pressing and upward pressing cutting component forces are mutually counteracted, the axial force is reduced during peripheral milling, and the force points to the inside of the plate during the cutting process of each blade, thereby inhibiting the generation of the defects of composite material layering, surface stripping, burrs and the like;
2) the PCD milling cutter blades are arranged at the inclination angle, and the PCD cutter blades inclined in the opposite direction have the inclination angle, so that the impact force of the PCD cutter blades is reduced, and the service life of the PCD milling cutter is further prolonged; the arrangement mode replaces the arrangement mode of the straight slot blades in the traditional technology, reduces the impact force and prolongs the service life of the cutter;
3) the chip removal groove is formed between the far handle blade and the near handle blade, so that chips can be effectively removed and heat can be dissipated, the chip removal capacity is improved, the influence of the chips on the cutter and the machined surface is reduced, and the service life of the cutter is further prolonged;
4) the end milling cutter edge can realize small cutting depth end milling, quick treatment of composite material plate surface waviness and the like is realized, and further processing is facilitated.
Drawings
FIG. 1 is a front view of a PCD milling cutter of the present invention for use in composite milling operations;
FIG. 2 is an expanded view of two sets of blades of the PCD milling cutter of the present invention;
FIG. 3 is a diagram of an end milling edge of a PCD milling cutter of the present invention;
the milling cutter comprises a milling cutter base body 1, a cutter handle 11, a cutter milling groove 2, a cutter blade 3, a cutter blade 31, a cutter blade far away from the cutter handle 32, a cutter blade near the cutter handle 31, a cutter blade far away from the cutter handle 31-1, a cutter blade far away from the cutter handle 31-2, a cutter blade near the cutter handle 32-1, a cutter blade near the cutter handle 32-2, a cutter blade near the cutter handle 4-1, a cutter blade near the cutter handle 4-2, a cutter blade near the cutter handle 4-1.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be noted that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the PCD milling cutter for milling composite materials of the present invention is composed of a milling cutter base 1, a shank 11 and two sets of blades 3 disposed on the milling cutter base 1.
The PCD milling cutter is provided with two groups of blades 3, each group of blades comprises two near-handle blades 32 close to the cutter handle 11 and two far-handle blades 32 far away from the cutter handle 11, and specifically comprises a first far-handle blade 31-1, a first near-handle blade 32-1, a second far-handle blade 31-2 and a second near-handle blade 32-2; the two far-handle milling cutter blades, namely a first far-handle blade 31-1 and a second far-handle blade 31-2 are welded in the milling cutter grooves 2 arranged at the front ends. The two near-handle milling cutter blades, namely the first near-handle blade 32-1 and the second near-handle blade 32-2 are welded in the rest two milling cutter grooves 2.
A first chip discharge groove 4-1 is formed between the first far-handle blade 31-1 and the first near-handle blade 32-1; a second chip discharge groove 4-2 is formed between the second far-handle blade 31-2 and the second near-handle blade 32-2; the first flutes 4-1 and the second flutes 4-2 have no overlapping portions in the central axis direction. The two groups of blades 3 are obliquely arranged, the inclination angles of the first far handle blade 31-1 and the second far handle blade 31-2 are right-inclined and 6 degrees, the inclination angles of the first near handle blade 32-1 and the second near handle blade 32-2 are left-inclined and 6 degrees. The PCD milling cutter blades are arranged at the inclined angles, and the PCD cutter blades inclined in opposite directions have the inclined angles, so that the impact force of the PCD cutter blades is reduced, and the service life of the PCD milling cutter is further prolonged. And a third chip groove 5 is arranged in front of the main cutting edge of each of the two groups of blades.
As shown in FIG. 2, the first distal handle blade 31-1 is 3mm in length as the second proximal handle blade 32-2, and the first proximal handle blade 32-1 is 4mm in length as the second distal handle blade 31-2; the length of the first chip groove 4-1 and the second chip groove 4-2 along the axial direction of the milling cutter base body 1 is 1mm, and the first chip groove 4-1 and the second chip groove 4-2 do not have overlapped parts along the axial direction. The chip removal groove can effectively remove chips and heat, thereby increasing the chip removal capacity, reducing the influence of chips on the cutter and the processed surface, and further prolonging the service life of the cutter
As shown in fig. 3, an end milling blade 6 is arranged at the distal end of the milling cutter slot 2, the end milling blade 6 is integrated with the milling cutter base 1, the material of the end milling blade is the same as that of the milling cutter base 1, the end milling blade can realize small-cutting-depth end milling, the end milling blade can perform small-cutting-depth end milling, rapid treatment of composite material plate surface waviness and the like is realized, and further processing is facilitated.
The PCD milling cutter structure for milling the composite material can reduce the impact force and the axial force during peripheral milling, inhibit the generation of defects such as composite material layering and the like, and has strong chip removal capability and long service life of the cutter; meanwhile, the end milling task with small cutting depth can be carried out.
It should be noted that the above description is only a preferred embodiment of the present invention, and it should be understood that, for those skilled in the art, modifications can be made without departing from the principle of the present invention, such as the length values of the two groups of blades, the inclination angles of the two groups of blades, the length values of the flutes, etc. of the present invention can be reset according to other practical operations, and these modifications should be considered as the protection scope of the present invention.
Claims (5)
1. A PCD milling cutter for milling composite materials comprises a milling cutter base body (1) and a cutter handle (11) connected with the milling cutter base body (1), and is characterized in that four cutter milling grooves (2) are formed in the far handle end of the milling cutter base body (1), and two groups of blades (3) are arranged in the cutter milling grooves (2); the two groups of blades (3) are respectively a first far handle blade (31-1), a first near handle blade (32-1), a second far handle blade (31-2) and a second near handle blade (32-2);
the two groups of blades (3) are obliquely arranged, the same angle is arranged between the two groups of blades (3) and the central axis of the milling cutter base body (1), and the oblique directions of the blades in the same group are opposite;
a first chip discharge groove (4-1) is formed between the first far-handle blade (31-1) and the first near-handle blade (32-1);
a second chip discharge groove (4-2) is formed between the second far-handle blade (31-2) and the second near-handle blade (32-2); the lengths of the first chip groove (4-1) and the second chip groove (4-2) are equal;
the first far handle blade (31-1) and the second near handle blade (32-2) have the same length; and the length is 4-8 mm; the first near-handle blade (32-1) and the second far-handle blade (31-2) have the same length; and the length of the first distal shank blade (31-1) or the second proximal shank blade (32-2) differs by the length of a chip groove (4);
the first chip grooves (4-1) and the second chip grooves (4-2) have no overlapped part along the axial direction of the milling cutter base body (1); the axial length of the first chip groove (4-1) and the second chip groove (4-2) along the milling cutter base body (1) is 0.5-1.5 mm; third chip grooves (5) are arranged in front of the main cutting edges of the two groups of blades (3).
2. A PCD milling cutter for milling of composite materials according to claim 1, characterised in that the angle between the groove bottom surface of the third chip flute (5) and the groove bottom surfaces of the first (4-1) and second (4-2) chip flutes is 90 ° -135 °.
3. The PCD milling cutter for milling composite materials according to claim 1, wherein the first distal shank blade (31-1) and the second distal shank blade (31-2) have inclination angles of 3 to 12 degrees in a right-hand inclination direction, and the first proximal shank blade (32-1) and the second proximal shank blade (32-2) have inclination angles of-3 to-12 degrees in a left-hand inclination direction.
4. A PCD milling cutter for milling of composite materials according to claim 1, characterised in that the distal shank nose of the milling cutter pocket (2) is provided with an end milling cutting edge (6).
5. A PCD milling cutter for milling of composite materials according to claim 4, characterized in that the end milling cutter edge (6) is of a unitary construction with the milling cutter base body (1), i.e. the end milling cutter edge material is identical to the milling cutter base body (1) material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810607093.2A CN108971589B (en) | 2018-06-13 | 2018-06-13 | PCD milling cutter for milling composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810607093.2A CN108971589B (en) | 2018-06-13 | 2018-06-13 | PCD milling cutter for milling composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108971589A CN108971589A (en) | 2018-12-11 |
| CN108971589B true CN108971589B (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810607093.2A Active CN108971589B (en) | 2018-06-13 | 2018-06-13 | PCD milling cutter for milling composite material |
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| Country | Link |
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| CN (1) | CN108971589B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4988241A (en) * | 1989-09-15 | 1991-01-29 | The Boeing Company | Cutter with angled diamond inserts |
| GB2387801A (en) * | 2002-04-25 | 2003-10-29 | Herramientas Preziss S L | Improved cutting tool |
| CN201799677U (en) * | 2010-07-19 | 2011-04-20 | 陕西红帜精密工具有限公司 | Pcd spiral milling cutter |
| EP2604368A1 (en) * | 2011-12-14 | 2013-06-19 | Ledermann GmbH & Co. KG | Machining tool |
| JP2015000458A (en) * | 2013-06-17 | 2015-01-05 | 大同工機株式会社 | End mill |
| CN205834329U (en) * | 2016-04-20 | 2016-12-28 | 哈尔滨理工大学 | A kind of broken line type for processing CFRP does not wait cutting edge inclination PCD milling cutter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130294852A1 (en) * | 2012-05-01 | 2013-11-07 | Seco Tools Ab | Compression cutting tool |
-
2018
- 2018-06-13 CN CN201810607093.2A patent/CN108971589B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4988241A (en) * | 1989-09-15 | 1991-01-29 | The Boeing Company | Cutter with angled diamond inserts |
| GB2387801A (en) * | 2002-04-25 | 2003-10-29 | Herramientas Preziss S L | Improved cutting tool |
| CN201799677U (en) * | 2010-07-19 | 2011-04-20 | 陕西红帜精密工具有限公司 | Pcd spiral milling cutter |
| EP2604368A1 (en) * | 2011-12-14 | 2013-06-19 | Ledermann GmbH & Co. KG | Machining tool |
| JP2015000458A (en) * | 2013-06-17 | 2015-01-05 | 大同工機株式会社 | End mill |
| CN205834329U (en) * | 2016-04-20 | 2016-12-28 | 哈尔滨理工大学 | A kind of broken line type for processing CFRP does not wait cutting edge inclination PCD milling cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108971589A (en) | 2018-12-11 |
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