CN110653408B - Internal suction type milling cutter for processing honeycomb and composite material - Google Patents
Internal suction type milling cutter for processing honeycomb and composite material Download PDFInfo
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- CN110653408B CN110653408B CN201910949120.9A CN201910949120A CN110653408B CN 110653408 B CN110653408 B CN 110653408B CN 201910949120 A CN201910949120 A CN 201910949120A CN 110653408 B CN110653408 B CN 110653408B
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- cutter
- tooth body
- cutter tooth
- suction
- lining
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- 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
- B23C5/165—Milling-cutters characterised by physical features other than shape with chipbreaking or chipdividing equipment
-
- 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
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
-
- 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
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/22—Securing arrangements for bits or teeth or cutting inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2230/00—Details of chip evacuation
- B23C2230/08—Using suction
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses an internal suction type milling cutter for processing honeycomb and composite materials, which comprises: the cutter tooth body is used for cutting off workpiece materials, cutter teeth are arranged on the outer ring of the cutter tooth body, the front cutter face of each cutter tooth is of a hollow structure, so that chips and solid particles formed by cutting are adsorbed into the cutter body, and bottom blades which are symmetrically distributed are polished at the bottom of the cutter tooth body; the connecting screw is used for fixedly connecting the cutter tooth body with the central cutter handle; the central cutter handle is used for being arranged on a main shaft of the machine tool; the through hole in the middle of the internal suction lining is matched and sealed with the central cutter handle through a bearing and realizes relative rotation, the internal suction lining is in clearance fit with the end face of the cutter tooth body, and debris is adsorbed and discharged from the hollow part of the lining; the inner suction guide pipe connects the inner suction lining with an external suction device and is a channel for discharging debris; and the sealing end covers and the inner suction lining are respectively arranged at two ends of the cutter tooth body so that the cutter tooth body forms a relatively closed space.
Description
Technical Field
The invention relates to the technical field of cutting machining and cutters, in particular to an internal suction type milling cutter for machining honeycombs and composite materials.
Background
The honeycomb sandwich structure composite material is an important weight-reducing material in the fields of aviation and aerospace, has excellent performances of light weight, high strength, high temperature resistance, low dielectric constant and the like, and becomes a preferred core material of an aviation composite material structural member. When the honeycomb material is processed, broken chips and a large amount of solid particles are easily formed, the broken chips are difficult to recycle, and the solid particles easily cause dust pollution and harm the health of operators. In addition, chips and solid particles are easily attached to the surface of the tool or enter the contact area between the tool and the workpiece, so that the tool is rapidly abraded and the machined surface is easily scratched, and the solid particles enter the machine tool to influence the working precision and the service life of the machine tool.
Similarly, composite materials composed of a base material and a reinforcement, such as aramid fiber and carbon fiber-reinforced composite materials, are also liable to form broken chips or solid particles at the time of cutting, causing similar problems as those at the time of cutting of honeycomb materials.
The existing honeycomb material processing generally adopts a spiral milling cutter with saw-toothed cutter teeth, a disc-shaped blade or a combined cutter integrating the disc-shaped blade and chipped cutter teeth and the like. The inventor finds that with the advance of the cutter technology, although the cutting efficiency of the honeycomb material is gradually improved, the harm caused by the formation of the scraps and the solid particles is not effectively solved, the yield of the honeycomb material structural member is low for a long time, the processing quality is difficult to meet the assembling and connecting requirements, and the high efficiency and high quality processing of the honeycomb composite structural material provides a serious challenge for the manufacturing field.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention discloses an internal suction type milling cutter for processing honeycombs and composite materials, which solves the problems that in the prior art, scraps are difficult to recycle when the honeycombs and the composite materials are cut, dust pollution is caused, and the scraps enter a cutter contact area to scratch and damage the quality of a processed surface, and achieves the beneficial effects of high-quality and high-efficiency processing of the honeycombs and the composite materials and real-time recycling of the scraps. The cutter has the advantages of simple integral structure, low manufacturing cost and easy popularization.
In order to solve the technical problems in the prior art, the invention adopts the following technical scheme:
an internal suction type milling cutter for honeycomb and composite material processing comprises:
the cutter tooth body is used for cutting off workpiece materials, the front cutter face of the cutter tooth is of a hollow structure, chips are absorbed into the cutter body, and bottom blades which are symmetrically distributed are polished at the bottom of the cutter tooth body;
the connecting screw is used for fixedly connecting the cutter tooth body with the central cutter handle;
the central knife handle is arranged on the main shaft of the machine tool;
the inner suction bush is characterized in that a through hole in the middle of the bush is matched and sealed with the central cutter handle through a bearing and rotates relatively, the lower edge of the bush is in clearance fit with the cutter tooth body, and debris is sucked and discharged from the hollow part of the bush;
the inner suction guide pipe connects the inner suction lining with an external suction device and is a channel for discharging debris;
the sealing end covers and the inner suction bushings are respectively arranged at two ends of the cutter tooth body to enable the cutter tooth body to form a relatively closed space, and the closed cutter body structure can enable an external suction device to form a negative pressure state during working, so that cuttings can be effectively absorbed into the cutter body; if the negative pressure degree in the cutter tooth body is further improved, a sealing ring device can be selectively arranged between the cutter tooth body and the lower edge of the inner suction bush.
The invention has the following beneficial effects:
in order to reduce the load born by a single cutting edge during cutting, the design of an ultra-dense tooth structure is adopted. The cutter tooth body is provided with eight rows of cutter teeth which are evenly distributed on the periphery of the cutter body, two adjacent rows of cutter teeth are longitudinally staggered, and simultaneously, symmetrically distributed bottom blades are polished at the bottom of the cutter tooth body, so that the workpiece material is cut along the longitudinal direction of the cutter body and the whole area of the bottom of the cutter body. The structural design can effectively reduce the cutting amount of a single cutter tooth, and the machining efficiency is ensured while the machining quality is improved. Similarly, the densely distributed cutter teeth on the periphery of the cutter body can also be spirally arranged along the outer surface of the cutter body.
The cutter is different from the traditional cutting tool, the front cutter face of the designed cutter tooth is of a hollow structure, and when a workpiece removal layer material is cut off and flows to the hollow position of the front cutter face, cutting chips are absorbed into the cutter body through the hollow part of the front cutter face and are discharged; because the strength of the honeycomb material is lower, the cutting load on a single cutting edge in the cutter with the dense-tooth structure is smaller, and the cutting performance of the cutter cannot be influenced due to the reduction of the integral rigidity of the cutter by the hollow structure design of the front cutter surface of the cutter. The hollow structure of the front tool face of the cutter tooth can effectively adsorb the chips and solid particles into the cutter body and discharge the chips and the solid particles in time, so that the chips and the solid particles are prevented from entering a cutter contact area and causing damage inside a machine tool. The sealing end cover at the bottom of the cutter tooth body enables the cutter body to form a closed space, and when the external air suction device works, a negative pressure state is formed inside the cutter body, so that cuttings can be effectively adsorbed into the cutter body.
Connecting screws for fixing the cutter tooth body and the central cutter handle are uniformly distributed along the circumferential direction at an included angle of 120 degrees, wherein three rows of nine connecting screws are longitudinally distributed along the cutter tooth body; the number or the position of the connecting screw rods can be flexibly set according to the size of the cutter tooth body. Similarly, the shape and size of the connection end of the central shank to the spindle of the machine tool may be varied depending on the type of spindle of the machine tool or the size of the collet.
In order to ensure the integral structural rigidity and the cutting performance of the cutter, the cutter tooth body is made of alloy steel or hard alloy and other materials, and then the hollow cutter tooth structure is prepared by utilizing processing technologies such as milling, grinding or laser processing, electrolytic processing and the like. The material of the central knife handle is hard alloy so as to improve the structural rigidity of the central knife handle and ensure the processing precision of the knife.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a general schematic view of the internal suction type milling tool for honeycomb and composite material processing according to the present invention;
FIG. 2 is an elevational view of the internal suction milling cutter of the present invention;
FIG. 3 is a side view of the internal absorption milling cutter of the present invention;
FIG. 4 is a bottom view of the internal suction milling cutter tool of the present invention;
FIG. 5 is a schematic view of a hollow portion of the rake face of a tooth in accordance with the present invention;
FIGS. 6, 7 and 8 are views showing the structure of the cutter tooth body 1 of the present invention;
the labels in the figure are: 1. a cutter tooth body; 2. connecting a screw rod; 3. an inner suction liner; 4. a central shank; 5. an internal aspiration catheter; 6. sealing the end cap; 7. a bottom edge; 8. a bearing assembly; 9. a hollow part of the front cutter surface; 10. a flank face.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
it should be understood that, assuming the main structure of the tool body is a circular ring, the centripetal side is the inside and the centrifugal side is the outside, and based on the basic orientation, the inside and outside in the present invention are accurately defined.
For convenience of description, the terms "front" and "rear" in the present invention, if any, are used only for referring to the front and rear directions of the drawings themselves, and do not limit the structure, but merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As introduced by the background art, the prior art has shortcomings, and in order to solve the technical problems, the application provides an internal suction type milling cutter for efficiently processing honeycombs and composite materials; .
In an exemplary embodiment of the present application, as shown in fig. 1, an internal absorption type milling tool for honeycomb and composite material processing includes: the cutter tooth body 1 is of a hollow annular structure as a whole, and cutter teeth are arranged on the outer side face of the cutter tooth body and used for cutting off workpiece materials; as shown in fig. 6, 7 and 8.
Connecting screw 2, with sword tooth body and central handle of a knife fixed connection, it sets up along the radial direction of sword tooth body 1, connecting screw 2's one end and central handle of a knife threaded connection, the other end and sword tooth body side threaded connection.
The inner suction lining 3 is integrally of an annular structure, and debris is sucked and discharged from the hollow part of the lining;
a central shank 4 connecting the tool with the spindle shank;
and an inner suction conduit 5 connected to the inner suction liner 3 for the passage of debris and solid particles.
The sealing end cover 6 and the inner suction bush are respectively arranged at two ends of the cutter tooth body to form a relatively closed space (in order to show the internal structure of the cutter body, the sealing end cover in the figure 1 is shown in a sectional cutting way); the closed cutter body structure can enable an external air suction device to form a negative pressure state during working, and further can effectively absorb cuttings into the cutter body; if the negative pressure degree in the cutter tooth body is further improved, a sealing ring device can be selectively arranged between the cutter tooth body and the lower edge of the inner suction bush.
And the bearing assembly 7 is used for realizing the matching and relative rotation of the inner suction bush 3 and the central cutter handle 4.
The cutter tooth body 1 and the central cutter handle 4 are fixedly connected by the connecting screw rod 2, the lower edge of a lining of the inner suction lining 3 is in clearance fit with the cutter tooth body 1, the inner suction guide pipe 5 and the inner suction lining 3 are in threaded connection or are integrally formed, and the sealing end cover 6 is in threaded connection with the cutter tooth body 1. The whole structure of the cutter is connected with an external air suction device through an internal suction conduit 5, so that the real-time recovery of cuttings and solid particles is realized.
In this embodiment, cutter tooth body 1 adopts super dense tooth structural design, and the cutter tooth body has eight total rows of cutter teeth and evenly arranges in the cutter body periphery, and two adjacent rows of cutter teeth are at the circumferencial direction staggered arrangement of cutter tooth body, and the coping of cutter tooth body bottom has the bottom edge of symmetric distribution (as shown in 7 in fig. 1, see the position that shows of fig. 2 and 3, the bottom edge sets up in the bottom of cutter tooth body, if see the position of fig. 1, then the bottom edge sets up at the top of cutter tooth body), guarantees that the work piece material is amputated along the whole region of cutter body vertically and bottom. In this embodiment, each row of cutter teeth has seven cutting edges arranged along the longitudinal direction, and wherein the cutting edges of four rows of cutter teeth are flush with the bottom of the cutter body, and the cutting edges flush with the bottom of the cutter tooth body are polished to form a bottom edge structure, so as to avoid the cutter tooth body from interfering with workpiece materials during face milling. The structure design effectively reduces the cutting amount of a single cutter tooth, and simultaneously ensures the processing efficiency and the processing quality. Similarly, in other embodiments, the densely-distributed cutter teeth on the periphery of the cutter body can also be spirally arranged along the outer surface of the cutter body, and the like, and are specifically arranged according to actual processing requirements.
As shown in fig. 1, each tooth front face of the tooth body 1 is a hollow structure (as shown in fig. 5, 9), and the centripetal side is a front face and the centrifugal side is a rear face based on the front definition; when chips flow to the hollow-out position of the front cutter face, the chips are adsorbed to enter the cutter body via the hollow-out position of the front cutter face and are immediately discharged, and the situation that chips and solid particles enter a cutter contact area to influence the quality of a machined surface or enter the machine tool to influence the service life and the working precision of the machine tool is avoided. The hollowed-out structure is not limited by specific shapes and structures, and even an open structure can be directly adopted as long as the condition that chips can enter the cutter body from the position is met.
The sealing end cover at the bottom of the cutter tooth body enables the cutter body to form a closed space, and when the external air suction device works, a negative pressure state is formed inside the cutter body, so that cuttings can be effectively adsorbed into the cutter body.
In the embodiment, the connecting screws 2 for fixing the cutter tooth body 1 and the central cutter handle 4 are uniformly distributed along the circumferential direction of the cutter tooth body at an included angle of 120 degrees, wherein three rows are longitudinally distributed along the cutter tooth body, and the number of the connecting screws in the embodiment of fig. 1 is nine; it will be understood that in other embodiments, the number or position of the connecting screws can be flexibly set according to the size of the cutter tooth body, and is not limited to the number and position disclosed in the embodiment.
As shown in fig. 1, the connecting end of the central tool shank 4 and the machine tool spindle is a straight shank structure, and the shape and size thereof can be changed according to the type of the machine tool spindle or the size of the collet chuck.
The cutter tooth body 1 is made of alloy steel or hard alloy and other materials, the central cutter handle 4 is made of hard alloy, the connecting screw rod 2 is a standard component, and the internal suction lining 3 and the internal suction conduit 5 are made of light aluminum alloy.
The internal suction type milling cutter is suitable for processing honeycomb materials, aramid fibers or carbon fiber composite materials and other workpiece materials which are easy to form broken chips and solid particles during cutting, and is also suitable for processing graphite, stone and other fragile materials which are easy to generate chips or dust.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (7)
1. An internal suction type milling cutter for processing honeycomb and composite materials is characterized by comprising the following components:
the cutter tooth body is used for cutting off workpiece materials, cutter teeth are arranged on the outer ring of the cutter tooth body, the front cutter face of each cutter tooth is of a hollow structure, so that chips and solid particles formed by cutting are adsorbed into the cutter body, and bottom blades which are symmetrically distributed are polished at the bottom of the cutter tooth body;
the cutter tooth body is provided with a plurality of rows of cutter teeth which are uniformly distributed on the periphery of the cutter body, and two adjacent rows of cutter teeth are staggered in the circumferential direction of the cutter teeth;
the connecting screw is used for fixedly connecting the cutter tooth body with the central cutter handle;
the central cutter handle is used for being arranged on a main shaft of the machine tool;
the through hole in the middle of the internal suction lining is matched and sealed with the central cutter handle through a bearing and realizes relative rotation, the internal suction lining is in clearance fit with the end face of the cutter tooth body, and debris is adsorbed and discharged from the hollow part of the lining;
the inner suction guide pipe connects the inner suction lining with an external suction device and is a channel for discharging debris;
the sealing end covers and the inner suction bushings are respectively arranged at two ends of the cutter tooth body to enable the cutter tooth body to form a relatively closed space, and the closed cutter body structure can enable an external suction device to form a negative pressure state during working, so that cuttings can be effectively absorbed into the cutter body.
2. The internal suction milling cutter for machining honeycomb and composite materials as claimed in claim 1, wherein the bottom of the cutter tooth body is ground with symmetrically distributed bottom edges to achieve full-area cutting of workpiece materials along the longitudinal direction and the bottom of the cutter body.
3. The internal suction milling cutter for machining honeycomb and composite materials as claimed in claim 1, wherein the bottom edge is ground by a cutting edge flush with the bottom of the cutter body.
4. The internal suction type milling cutter for honeycomb and composite processing as claimed in claim 1, wherein the connecting screws are uniformly distributed along the circumferential direction inside the cutter tooth body at an included angle of 120 degrees, and a plurality of rows are longitudinally distributed along the cutter tooth body.
5. The internal suction type milling cutter for honeycomb and composite material processing as claimed in claim 1, wherein the number or position of the connecting screws can be flexibly set according to the size of the cutter tooth body.
6. The internal absorption type milling cutter for honeycomb and composite material processing as claimed in claim 1, wherein the size of the connecting end of the central shank and the machine tool spindle can be changed according to the type of the machine tool spindle or the size of a collet chuck.
7. The cutter of claim 1, wherein when a plurality of inner suction ducts are provided, the plurality of inner suction ducts are uniformly provided along the outer side of the inner suction liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910949120.9A CN110653408B (en) | 2019-10-08 | 2019-10-08 | Internal suction type milling cutter for processing honeycomb and composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910949120.9A CN110653408B (en) | 2019-10-08 | 2019-10-08 | Internal suction type milling cutter for processing honeycomb and composite material |
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| Publication Number | Publication Date |
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| CN110653408A CN110653408A (en) | 2020-01-07 |
| CN110653408B true CN110653408B (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910949120.9A Active CN110653408B (en) | 2019-10-08 | 2019-10-08 | Internal suction type milling cutter for processing honeycomb and composite material |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111266639A (en) * | 2020-04-09 | 2020-06-12 | 成都佳驰电子科技有限公司 | Foam absorbing material 3D processing cutter |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4907920A (en) * | 1989-01-18 | 1990-03-13 | The Boeing Company | Milling cutter for honeycomb core material |
| US7337523B1 (en) * | 2006-08-11 | 2008-03-04 | The Boeing Company | Methods and apparatus for an annular core cutter |
| CN102554327A (en) * | 2012-01-05 | 2012-07-11 | 哈尔滨飞机工业集团有限责任公司 | Disk honeycomb milling cutter capable of discharging chips |
| CN203725861U (en) * | 2014-01-06 | 2014-07-23 | 厦门金鹭特种合金有限公司 | Combined cutting tool for processing paper honeycomb material |
| CN204234848U (en) * | 2014-11-25 | 2015-04-01 | 湖北汽车工业学院 | A kind of processing plastic foam material special hollow milling cutter |
| DE202015101167U1 (en) * | 2015-03-09 | 2015-03-16 | Albert Knebel Holding Gmbh | Milling tool with circumferentially arranged cutting edge |
| EP3348340B1 (en) * | 2017-01-16 | 2020-01-01 | Seco Tools Ab | Rotary cutting tool |
| CN206689500U (en) * | 2017-03-09 | 2017-12-01 | 江门市骏杰刀具科技有限公司 | One kind processing air cellular material section plus crushing gang tool |
| CN108927562A (en) * | 2017-05-23 | 2018-12-04 | 成都飞机工业（集团）有限责任公司 | A kind of milling cutter for processing comb core material |
| CN107617775A (en) * | 2017-07-31 | 2018-01-23 | 成都飞机工业（集团）有限责任公司 | A kind of Combined vertical milling cutter for processing paper substrate honeycomb composite |
| CN207508377U (en) * | 2017-11-07 | 2018-06-19 | 常州迈腾工具有限公司 | A kind of milling cutter with spiral chip dividing groove |
| CN108080685A (en) * | 2017-12-25 | 2018-05-29 | 陈豪 | A kind of milling cutter easy to use |
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