CN113210648A - Automobile hub composite cutter and air hole one-step forming method - Google Patents
Automobile hub composite cutter and air hole one-step forming method Download PDFInfo
- Publication number
- CN113210648A CN113210648A CN202110648234.7A CN202110648234A CN113210648A CN 113210648 A CN113210648 A CN 113210648A CN 202110648234 A CN202110648234 A CN 202110648234A CN 113210648 A CN113210648 A CN 113210648A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000002131 composite material Substances 0.000 title claims description 23
- 238000005520 cutting process Methods 0.000 claims abstract description 33
- 238000003754 machining Methods 0.000 claims description 27
- 150000001875 compounds Chemical class 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 10
- 238000005553 drilling Methods 0.000 claims description 8
- 230000003746 surface roughness Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/03—Boring heads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/24—Tool holders for a plurality of cutting tools, e.g. turrets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention relates to the technical field of machine tool cutters, and particularly discloses an automobile hub air hole drill bit and an air hole one-step forming method. The drill rod is in a stepped shaft shape, a first stepped cutter, a second stepped cutter, a third stepped cutter and a fourth stepped cutter are arranged on the drill rod, the first stepped cutter comprises a U-drill inner blade and a U-drill outer blade, the second stepped cutter comprises a rough boring blade, the third stepped cutter comprises a fine boring blade, the fourth stepped cutter comprises a front fillet-chamfering blade, and an auxiliary cutting edge of the fine boring blade participating in fine boring processing is provided with a section of arc, the invention can carry out the back rounding of the air hole, integrates a U drill, a rough boring cutter, a semi-finish boring cutter, a front rounding cutter and a back rounding cutter on the same guide rod, can be sequentially drilled, roughly bored, semi-finely bored, chamfered on the front side and chamfered on the back side, in the process, repeated tool withdrawal and tool changing are not needed, and the processing efficiency and the processing precision are greatly improved.
Description
Technical Field
The invention relates to the technical field of machine tool cutters, in particular to an automobile hub composite cutter and an air hole one-step forming method.
Background
The automobile hub air hole is a cavity formed in a hub radial plate, so that acoustic short circuits can be formed on the inner side and the outer side of the hub radial plate to reduce the sound radiation efficiency of the wheel.
The machining precision requirement of the air holes is high. The machining process of the air holes generally comprises rough machining, rough boring, fine boring, milling of double-sided chamfers and the like, different cutters are adopted in the related machining processes, and the corresponding cutters are high in purchase cost; the production efficiency is low; the cutter brings more auxiliary time such as cutter changing and is not beneficial to high-efficiency mass production.
Disclosure of Invention
The invention solves the problems that: in the prior art, the machining of the automobile hub air hole needs to be carried out repeatedly, the machining efficiency is influenced, and the automobile hub composite cutter capable of completing drilling, boring and chamfering at one time is provided.
The automobile hub composite cutter comprises a cutter handle, a connecting part and a cutter rod, wherein the cutter rod is in a stepped shaft shape, a first stepped cutter, a second stepped cutter, a third stepped cutter and a fourth stepped cutter are arranged on the cutter rod, the first stepped cutter comprises a U-drill inner edge blade and a U-drill outer edge blade, the U-drill inner edge blade and the U-drill outer edge blade are fixedly mounted at the front end of the cutter rod, the heights of the U-drill inner edge blade and the U-drill outer edge blade are consistent, main declination angles are the same, the second stepped cutter comprises a rough boring blade, the third stepped cutter comprises a fine boring blade, the fourth stepped cutter comprises a front side chamfering blade, a secondary cutting edge of the fine boring blade, which participates in fine boring, is provided with a section of circular arc, and can perform air hole back side chamfering, and the axial distance from a cutting edge of the fine boring blade, which participates in back side chamfering, to a cutting edge of the front side chamfering is larger than that of an automobile hub, which participates in front side chamfering, and the fine boring blade participates in front side chamfering And the radius of a cutter bar between the fine boring cutter blade and the front side rounding cutter blade is smaller than the distance from the upper part of the circular arc cutting edge participating in the reverse rounding processing on the fine boring cutter blade to the axis of the cutter bar.
Further, the second stepped cutter also comprises a semi-fine boring cutter blade, and the tip of the rough boring cutter blade participating in machining and the tip of the semi-fine boring cutter blade participating in machining have an axial distance along the cutter body which is at least three times of the feeding amount.
Furthermore, the U-drill inner edge blade, the U-drill outer edge blade, the rough boring blade and the semi-fine boring blade are all indexable four-edge blades.
Further, the indexable four-edged insert has a model number SPGG 150408.
Further, the fine boring blade and the front chamfering blade are of the SPMT140508PCD type, and the edge radius of the fine boring blade and the front chamfering blade participating in the fillet guiding is 4.5 mm.
Further, the main declination angle of the fine boring blade is 45 degrees.
Further, the main deflection angle of the U-shaped drill inner edge blade and the U-shaped drill outer edge blade is 85 degrees.
Furthermore, the cutter bar is modulated by 40-48HRC and is subjected to blackening treatment.
In another aspect of the invention, an automobile hub air hole one-step forming method is provided based on the automobile hub composite cutter, and the method comprises the following steps:
s1, fixing the hub of the automobile wheel, and moving the compound cutter to the position to be processed;
s2, feeding the composite cutter forwards, and drilling the hub by using a first step cutter at the head of the cutter rod, wherein the first step cutter comprises a U-drill inner-edge blade and a U-drill outer-edge blade;
s3, feeding the composite cutter forward continuously, roughly boring the drilled hole by a second stepped cutter in the middle of the cutter rod, enlarging the aperture of the hole drilled by the first stepped cutter, and reserving a machining allowance of 1mm for the diameter of the hole, wherein the second stepped cutter comprises a roughly boring blade and a semi-roughly boring blade which are arranged on the side surface of the cutter rod;
s4, feeding the composite cutter forward continuously, and finely boring the roughly bored hole by a third stepped cutter on the middle upper part of the cutter bar, so that the aperture is enlarged, the precision is improved, and the surface roughness is reduced, wherein the third stepped cutter comprises a finely bored blade arranged on the side surface of the cutter bar;
s5, after the finish boring of the through hole is completed by the third stepped cutter, the composite cutter continues to feed forwards, and the arc-shaped cutting edge of the fourth stepped cutter on the upper part of the cutter rod performs molding fillet machining on the edge of the upper end of the through hole, wherein the fourth stepped cutter comprises a front fillet-chamfering blade arranged on the side surface of the cutter rod;
s6, after the fillet machining is finished, the cutter retreats, and the height of the arc cutting edge on the secondary cutting edge of the fine boring blade is adjusted to be consistent with the height of the bottom of the through hole;
s7, moving the cutter along the radial direction of the through hole, after the cutter reaches a processing position, enabling the cutter to surround a circle around the axis of the through hole, and carrying out reverse molding and fillet processing on the edge of the lower end of the through hole by using an arc cutting edge on a secondary cutting edge of a fine boring blade;
and S8, after the reverse molding fillet machining is finished, the cutter retreats to the axis position of the through hole, retreats from the through hole and enters the next air hole machining cycle.
The invention has the beneficial effects that:
1. according to the invention, the U drill, the rough boring cutter, the semi-fine boring cutter, the front chamfering cutter and the back chamfering cutter are integrated on the same guide rod, and drilling, rough boring, semi-fine boring, front chamfering and back chamfering can be sequentially carried out.
2. According to the invention, the reverse side fillet tool is integrated on the secondary cutting edge of the fine boring tool, so that the utilization rate of the blade is improved, the overall length of the tool bar is reduced, the processing precision is improved, and the cost is saved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment 1 of an automobile hub composite tool according to the present invention;
fig. 2 is a schematic view of the structure and air hole processing of an embodiment 2 of the automobile hub composite tool according to the present invention.
In the figure: 1, a knife handle; 2, a connecting part; 3, a cutter bar; 4U inner edge drilling blade; 5U drill outer edge blade; 6 roughly boring the blade; 7 semi-fine boring blade; 8, finely boring the blade; 9 front-side rounded blade.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Embodiment 1, as shown in fig. 1, an automobile wheel hub compound tool includes handle of a knife 1, connecting portion 2 and cutter arbor 3, cutter arbor 3 is the step shaft form, be equipped with first ladder sword, second ladder sword, third ladder sword, fourth ladder sword on the cutter arbor 3, first ladder sword includes U bores inner blade 4 and U bores outer blade 5, U bores inner blade 4 and U bores outer blade 5 fastening installation in the front end of cutter arbor 3, U bores inner blade 4, U bores outer blade 5 highly uniform, and the main declination is the same, second ladder sword includes heavy boring blade 6, third ladder sword includes finish boring blade 8, fourth ladder sword includes front fillet blade 9, the vice cutting edge that finish boring blade 8 participated in the finish boring is equipped with one section arc, can carry out the wind hole back fillet, the cutting edge that participates in back fillet processing to the front fillet processing's of front fillet blade 9 on finish boring blade 8 The axial distance of the cutting edge is greater than the material thickness of a processing air hole on the automobile hub, and the radius of the cutter bar 3 between the fine boring blade 8 and the front chamfering blade 9 is smaller than the distance between the upper part of the arc cutting edge participating in the reverse chamfering processing on the fine boring blade 8 and the axis of the cutter bar 3.
Example 2, as shown in fig. 2, differs from example 1 in that: the second stepped cutter also comprises a semi-fine boring blade 7, and the machining participating cutter points of the rough boring blade 6 and the semi-fine boring blade 7 have an axial distance along the cutter body which is at least three times of the feeding amount.
In practical application, the U-drill inner edge blade 4, the U-drill outer edge blade 5, the rough boring blade 6 and the semi-fine boring blade 7 are all indexable four-edge blades.
In practice, the indexable four-edged insert is of the type SPGG 150408.
In practical application, the fine boring blade 8 and the front chamfering blade 9 are SPMT140508PCD, and the edge radius of the fine boring blade and the front chamfering blade participating in the fillet guiding is 4.5 mm.
In practical application, the main declination angle of the fine boring blade 8 is 45 °.
In practical application, the main deflection angle of the U-shaped drill inner edge blade 4 and the U-shaped drill outer edge blade 5 is 85 °.
In practical application, the cutter bar 3 adopts modulation 40-48HRC for blackening treatment.
In another aspect of the invention, an automobile hub air hole one-step forming method is provided based on the automobile hub composite cutter, and the method comprises the following steps:
s1, fixing the hub of the automobile wheel, and moving the compound cutter to the position to be processed;
s2, feeding the composite cutter forward, and drilling the hub by a first step cutter at the head of the cutter rod 3, wherein the first step cutter comprises a U-drill inner edge blade 4 and a U-drill outer edge blade 5;
s3, feeding the composite cutter forward continuously, roughly boring the drilled hole by a second stepped cutter in the middle of the cutter rod, enlarging the aperture of the hole drilled by the first stepped cutter, and reserving a machining allowance of 1mm for the diameter of the hole, wherein the second stepped cutter comprises a roughly boring blade 6 and a semi-roughly boring blade 7 which are arranged on the side surface of the cutter rod 3;
s4, feeding the composite cutter forward continuously, and finely boring the roughly bored hole by a third stepped cutter on the middle upper part of the cutter rod 3, so that the aperture is enlarged, the precision is improved, and the surface roughness is reduced, wherein the third stepped cutter comprises a finely bored blade 8 arranged on the side surface of the cutter rod 3;
s5, after the finish boring of the through hole is completed by the third stepped cutter, the composite cutter continues to feed forwards, and the arc-shaped cutting edge of the fourth stepped cutter on the upper part of the cutter rod 3 performs molding fillet machining on the edge of the upper end of the through hole, wherein the fourth stepped cutter comprises a front fillet-rounding blade 9 arranged on the side surface of the cutter rod;
s6, after the fillet machining is finished, the cutter retreats, and the height of the arc cutting edge on the secondary cutting edge of the fine boring blade 8 is adjusted to be consistent with the height of the bottom of the through hole;
s7, moving the cutter along the radial direction of the through hole, after the cutter reaches a processing position, enabling the cutter to surround a circle around the axis of the through hole, and carrying out reverse molding and fillet processing on the edge of the lower end of the through hole by using an arc cutting edge on a secondary cutting edge of the fine boring blade 8;
and S8, after the reverse molding fillet machining is finished, the cutter retreats to the axis position of the through hole, retreats from the through hole and enters the next air hole machining cycle.
The working principle of the invention is as follows:
the invention integrates a U drill, a rough boring cutter, a semi-fine boring cutter, a front chamfer cutter and a back chamfer cutter on the same guide rod, the integration degree is high, in the actual processing process, drilling, rough boring, semi-fine boring and fine boring are sequentially carried out, through hole processing is completed, then a cutter bar continues to go down for front chamfer angle rounding, and finally the cutter bar rises upwards, so that an arc cutting edge on a secondary cutting edge of the fine boring cutter is flush with the bottom of the through hole, the cutter bar is controlled to be close to the through hole, and the cutter bar wraps and turns round along the excircle of the through hole to complete reverse chamfer angle cutting processing.
In conclusion, the automobile hub composite cutter can finish multiple operations of drilling, rough boring, semi-fine boring, front chamfering and back chamfering by using one cutter, and greatly improves the machining efficiency.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical spirit and features of the present invention, and the present invention is not limited thereto but may be implemented by those skilled in the art.
Claims (9)
1. The utility model provides an automobile wheel hub gang tool which characterized in that: the special tool comprises a tool shank (1), a connecting part (2) and a tool bar (3), wherein the tool bar (3) is in a stepped shaft shape, a first stepped tool, a second stepped tool, a third stepped tool and a fourth stepped tool are arranged on the tool bar (3), the first stepped tool comprises a U-drill inner edge blade (4) and a U-drill outer edge blade (5), the U-drill inner edge blade (4) and the U-drill outer edge blade (5) are fixedly arranged at the front end of the tool bar (3), the U-drill inner edge blade (4) and the U-drill outer edge blade (5) are consistent in height and have the same main deflection angle, the second stepped tool comprises a rough boring blade (6), the third stepped tool comprises a fine boring blade (8), the fourth stepped tool comprises a front fillet chamfering blade (9), an auxiliary cutting edge of the fine boring blade (8) is provided with a section of a chamfer, and can be used for air hole back fillet, the axial distance between the cutting edge participating in back rounding processing and the cutting edge participating in front rounding processing on the fine boring blade (8) and the cutting edge participating in front rounding processing on the front rounding blade (9) is greater than the material thickness of a processing air hole on an automobile hub, and the radius of the cutter bar (3) between the fine boring blade (8) and the front rounding blade (9) is smaller than the distance between the upper part of the circular arc cutting edge participating in reverse rounding processing on the fine boring blade (8) and the axle center of the cutter bar (3).
2. The automobile hub compound tool according to claim 1, characterized in that: in practical application, the second stepped cutter further comprises a semi-fine boring cutter blade (7), and the tip of the rough boring cutter blade (6) participating in machining and the tip of the semi-fine boring cutter blade (7) participating in machining have an axial distance along the cutter body which is at least three times of the feeding amount.
3. The automobile hub compound tool according to claim 2, characterized in that: in practical application, the U-drill inner edge blade (4), the U-drill outer edge blade (5), the rough boring blade (6) and the semi-fine boring blade (7) are all indexable four-edge blades.
4. The automobile hub compound tool according to claim 3, characterized in that: in practice, the indexable four-edged insert is of the type SPGG 150408.
5. The automobile hub compound tool according to claim 1, characterized in that: in practical application, the fine boring blade (8) and the front chamfering blade (9) are SPMT140508PCD, and the edge radius of the fine boring blade and the front chamfering blade participating in the fillet guiding is 4.5 mm.
6. The automobile hub compound tool according to claim 1, characterized in that: in practical application, the main deflection angle of the fine boring blade (8) is 45 degrees.
7. The automobile hub compound tool according to claim 1, characterized in that: in practical application, the main deflection angle of the U-drill inner edge blade (4) and the U-drill outer edge blade (5) is 85 degrees.
8. The automobile hub compound tool according to claim 1, characterized in that: in practical application, the cutter bar (3) adopts modulation 40-48HRC for blackening treatment.
9. An one-step molding method for an automobile hub air hole by using the automobile hub composite tool according to any one of claims 1 to 8, characterized by comprising the following steps: the method comprises the following steps:
s1, fixing the hub of the automobile wheel, and moving the compound cutter to the position to be processed;
s2, feeding the composite cutter forwards, and drilling the hub by using a first step cutter at the head of the cutter rod (3), wherein the first step cutter comprises a U-drill inner-edge blade (4) and a U-drill outer-edge blade (5);
s3, feeding the composite cutter forward continuously, roughly boring the drilled hole by a second stepped cutter in the middle of the cutter rod, enlarging the aperture of the hole drilled by the first stepped cutter, and reserving a machining allowance of 1mm for the diameter of the hole, wherein the second stepped cutter comprises a roughly boring blade (6) and a semi-roughly boring blade (7) which are arranged on the side surface of the cutter rod (3);
s4, the composite cutter continuously feeds forwards, a third stepped cutter at the middle upper part of the cutter rod (3) finely bores and processes the roughly bored hole, the hole diameter is enlarged, the precision is improved, and the surface roughness is reduced, wherein the third stepped cutter comprises a finely bored blade (8) arranged on the side surface of the cutter rod (3);
s5, after finish boring of the through hole by the third stepped cutter, the composite cutter continues to feed forwards, and the arc-shaped cutting edge of the fourth stepped cutter on the upper part of the cutter rod (3) performs molding fillet machining on the edge of the upper end of the through hole, wherein the fourth stepped cutter comprises a front fillet-rounding blade (9) arranged on the side surface of the cutter rod;
s6, after the fillet machining is finished, the cutter retreats, and the height of the arc cutting edge on the secondary cutting edge of the fine boring blade (8) is adjusted to be consistent with the height of the bottom of the through hole;
s7, moving the cutter along the radial direction of the through hole, after the cutter reaches a processing position, enabling the cutter to surround a circle around the axis of the through hole, and carrying out reverse molding fillet processing on the edge of the lower end of the through hole by using an arc cutting edge on a secondary cutting edge of a fine boring blade (8);
and S8, after the reverse molding fillet machining is finished, the cutter retreats to the axis position of the through hole, retreats from the through hole and enters the next air hole machining cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110648234.7A CN113210648A (en) | 2021-06-10 | 2021-06-10 | Automobile hub composite cutter and air hole one-step forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110648234.7A CN113210648A (en) | 2021-06-10 | 2021-06-10 | Automobile hub composite cutter and air hole one-step forming method |
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| Publication Number | Publication Date |
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| CN113210648A true CN113210648A (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110648234.7A Pending CN113210648A (en) | 2021-06-10 | 2021-06-10 | Automobile hub composite cutter and air hole one-step forming method |
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| CN (1) | CN113210648A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113770399A (en) * | 2021-08-20 | 2021-12-10 | 中国航发航空科技股份有限公司 | Tool for machining deep hole of intermediate case of aircraft engine and machining method of tool |
| CN113857582A (en) * | 2021-10-18 | 2021-12-31 | 鲁西工业装备有限公司 | Integrative sword of heat exchanger tube hole processing groove chamfer |
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| SU806275A1 (en) * | 1979-01-25 | 1981-02-23 | Специальное Конструкторское Бюроалмазно-Расточных И Радиально-Cbep-Лильных Ctahkob | Method of boring stepped holes |
| DE3606785A1 (en) * | 1986-03-01 | 1987-09-03 | Gwt Ges Fuer Gewindewirbel & T | Machining device |
| CN201442110U (en) * | 2009-06-11 | 2010-04-28 | 泰安市金港机械制造有限责任公司 | Bore hole chamfering compound cutter |
| CN204724906U (en) * | 2015-05-30 | 2015-10-28 | 威海伯特利萨克迪汽车安全系统有限公司 | Bore boring compound tool |
| CN204975376U (en) * | 2015-08-31 | 2016-01-20 | 郑州飞龙汽车部件有限公司 | Compound tool |
| CN107931636A (en) * | 2017-12-31 | 2018-04-20 | 无锡威孚精密机械制造有限责任公司 | For boring the compound tool of bore hole and end face annular groove processing |
| CN207508305U (en) * | 2017-11-23 | 2018-06-19 | 采埃孚富奥底盘技术(长春)有限公司 | A kind of hole machined compound tool |
| CN213916314U (en) * | 2020-12-01 | 2021-08-10 | 包头盛泰汽车零部件制造有限公司 | Drilling, boring and chamfering integrated tool for heat dissipation hole of truck wheel |
-
2021
- 2021-06-10 CN CN202110648234.7A patent/CN113210648A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU806275A1 (en) * | 1979-01-25 | 1981-02-23 | Специальное Конструкторское Бюроалмазно-Расточных И Радиально-Cbep-Лильных Ctahkob | Method of boring stepped holes |
| DE3606785A1 (en) * | 1986-03-01 | 1987-09-03 | Gwt Ges Fuer Gewindewirbel & T | Machining device |
| CN201442110U (en) * | 2009-06-11 | 2010-04-28 | 泰安市金港机械制造有限责任公司 | Bore hole chamfering compound cutter |
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| CN107931636A (en) * | 2017-12-31 | 2018-04-20 | 无锡威孚精密机械制造有限责任公司 | For boring the compound tool of bore hole and end face annular groove processing |
| CN213916314U (en) * | 2020-12-01 | 2021-08-10 | 包头盛泰汽车零部件制造有限公司 | Drilling, boring and chamfering integrated tool for heat dissipation hole of truck wheel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113770399A (en) * | 2021-08-20 | 2021-12-10 | 中国航发航空科技股份有限公司 | Tool for machining deep hole of intermediate case of aircraft engine and machining method of tool |
| CN113857582A (en) * | 2021-10-18 | 2021-12-31 | 鲁西工业装备有限公司 | Integrative sword of heat exchanger tube hole processing groove chamfer |
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