CN104690491A - Precision machining method of easy-deformed structure aluminum dovetail groove - Google Patents
Precision machining method of easy-deformed structure aluminum dovetail groove Download PDFInfo
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- CN104690491A CN104690491A CN201510077711.3A CN201510077711A CN104690491A CN 104690491 A CN104690491 A CN 104690491A CN 201510077711 A CN201510077711 A CN 201510077711A CN 104690491 A CN104690491 A CN 104690491A
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- Prior art keywords
- dovetail groove
- precision machining
- cutting
- dovetail
- fish
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
- B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/28—Grooving workpieces
- B23C3/34—Milling grooves of other forms, e.g. circumferential
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/04—Angles
- B23C2210/0407—Cutting angles
- B23C2210/0442—Cutting angles positive
- B23C2210/0457—Cutting angles positive radial rake angle
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Milling Processes (AREA)
Abstract
The invention discloses a precision machining method of an easy-deformed structure aluminum dovetail groove, belongs to non-ferrous metal precision machining technologies in the field of machining and aims to provide a processing method which can complete the precision machining of the easy-deformed aluminum dovetail groove with a high qualification ratio; the adopted technical scheme is that the precision machining method comprises the following process steps: Step one, CNC milling a dovetail shape by using a dovetail cutter, and placing for 3 to 4 hours after each of rough turning, half finished turning and finished turning these process steps; Step two, linearly cutting the clearance groove; Step three, preparing square holes through electric spark; Step four, placing for 3 to 4 hours after the third step is completed; Step five, milling a dovetail groove in a machining center; Step six, linearly cutting two ends of the dovetail groove by using a slow-speed wire-cutting machine; Step seven, performing surface treatment on the dovetail groove; Step eight, running in the dovetail groove by fitters. The precision machining method is applied to the processing of aluminum dovetail grooves.
Description
Technical field
Yielding structure aluminum dovetail groove method for fine finishing, belongs to the non-ferrous metal finishing technology in field of machining.
Background technology
Because structure is special, poor rigidity, easily there is distortion in yielding aluminum oat tail groove structure, adopt in the past and insert the plug in dovetail groove processed of driving skills art, efficiency is low, low precision, and crudy is difficult to ensure, needs made allowance to carry out last scraping to ensure machining accuracy in processing.Although the guide rail of domestic similar structures, chute process technology are comparatively ripe, the processing of aluminium matter dovetail groove still belongs to blank at present.
In current factory, completely hand scraping is relied on to the fine finishining that dovetail groove is last, certain machine is there is equally and adds deflection in the particularity because of each sliding groove structure before scraping, when causing hand scraping, dovetail groove grind that each scraping face is stayed is large, again because each chute dovetail groove is many, labour intensity is large especially, cause efficiency low especially, percent defective is high.
It is a kind of that low-speed WEDM process technology is that Wire EDM obtains, and is utilize the fine wire of continuous moving (being called wire electrode) to make electrode, carries out pulse spark electric discharge removal metal, excision forming to workpiece.It is mainly used in processing various complex-shaped and accurate workpiece, be divided into fast, slow wire feeding two kinds, slow feeding linear cutting bed (being also LSWEDM machine tool bed) mainly uses brass wire, uses for filament winding bobbin, servomotor constant tension control device, director for EDM machine and wire electrode automotive rolling mechanism etc.General what all adopt is the brass wire of rolling, but self is heavier, in order to prevent the phenomenon of silk unrest from occurring, confession filament winding bobbin is being equipped with the very little pretension motor of moment.During wire transporting, brass wire is through devices such as servomotor, guide wheel, roll, wire drawing cylinder and tight silk cylinders, make copper wire the arrival region of discharge of at the uniform velocity constant force can carry out work, just do not re-use after discharge off, reclaimed specially, stable working, evenly, shake little, crudy is better, and adopt advanced power technology, achieve High-speed machining, peak performance can reach 350mm2/min.The wire transporting speed of slow wire feeding is comparatively slow, be generally 0.25m/s, but precision can reach 0.001mm level, working surface roughness can reach Ra=0.8 μm and more than, and deviation from circular from, straight line error and scale error all comparatively fast wire edm cutter is well a lot, surface quality is also close to grinding level.
Summary of the invention
Technical problem to be solved by this invention is to provide one can complete the accurately machined processing method of yielding structure aluminum dovetail groove in high pass rate.
For solving the problems of the technologies described above, the technical solution adopted in the present invention: yielding structure aluminum dovetail groove method for fine finishing, carry out according to following processing step:
The first step, use fish-tail cutter numerical control mill dovetail groove profile, and, half finish turning, finish turning three work steps rough turn at numerical control mill add man-hour, all place 3 ~ 4 hours after each work step completes;
Second step, Linear cut undercut;
3rd step, spark system square hole;
4th step, complete after the 3rd step and place 3 ~ 4 hours;
5th step, machining center milling dovetail groove;
6th step, use slow feeding linear cutting bed Linear cut two ends dovetail groove, amount of grinding selects 0.05mm, and cooling fluid electrical conductivity is selected 5;
7th step, surface treatment dovetail groove;
8th step, pincers worker facing-up dovetail groove.
Use during fish-tail cutter numerical control mill dovetail groove profile and adopt following corrective measure:
A. cutting speed adopts high-speed cutting or slow cutting;
B. coolant rate is increased;
C. fish-tail cutter anterior angle adds greatly 20 °-30 ° by 10 °.
Compared to the prior art the present invention has following beneficial effect.
One, 55 ° of fish-tail cutters that the design of current each cutter producer is produced are applicable to process the workpiece of rigidity material, for aluminum dovetail groove, the present invention improves numerical control mill dovetail groove process tool, 55 ° of fish-tail cutter cutting-tool angles etc. are done some adjustment, as anterior angle is strengthened, can cutting force be reduced, improve working (machining) efficiency; Relief angle is suitably strengthened, can shock resistance be increased.
Two, the built-up edge for producing when reducing processing dovetail groove, improves from following three aspects:
A. cutting speed should not adopt middling speed to cut, and reduces or improves cutting speed and effectively can prevent the too fast formation of built-up edge;
B. increasing coolant rate makes point of a knife temperature reduce;
C. strengthen tool orthogonal rake to be 20 °-30 ° and to make chip removal smooth.
Finally can reach controller through above measure and add distortion, reduce hand scraping amount, meet the object of drawing Geometrical Tolerance Principle.
Three, dovetail groove is processed on slow feeding linear cutting bed, use and cut the processing technology that repaiies three, and leave and take the amount of grinding of about 0.05, labour intensity during processing dovetail groove can be reduced, enhance productivity, reduce percent defective.Change cooling fluid electrical conductivity into 5 by 20 of machining steel material simultaneously, can prevent linear cutter high temperature from causing changes in material to become Al2O3.
Four, because when processing dovetail groove, all the other sizes of workpiece are made substantially, ensure machining accuracy, prevent workpiece deformation from seeming particularly important, three need be divided to process, and place 3 ~ 4 hours after every portion processes, to discharge machining stress.
Accompanying drawing explanation
Fig. 1 is the structural representation of dovetail groove.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the milling cutter tool structural representation after improving.
Fig. 4 is the right anterior angle γ angle schematic diagram depending on seeing of Fig. 3.
Fig. 5 is that Fig. 3 is from A-A to the relief angle α angle schematic diagram seen.
Fig. 6 is that Fig. 4 is from B-B to the relief angle α ' schematic diagram seen.
Detailed description of the invention
As shown in Fig. 1-Fig. 6, yielding structure aluminum dovetail groove method for fine finishing, carries out according to following processing step:
The first step, use fish-tail cutter numerical control mill dovetail groove profile, and, half finish turning, finish turning three work steps rough turn at numerical control mill add man-hour, all place 3 ~ 4 hours after each work step completes;
Second step, Linear cut undercut;
3rd step, spark system square hole;
4th step, complete after the 3rd step and place 3 ~ 4 hours;
5th step, machining center milling dovetail groove;
6th step, use slow feeding linear cutting bed Linear cut two ends dovetail groove, amount of grinding selects 0.05mm, and cooling fluid electrical conductivity is selected 5;
7th step, surface treatment dovetail groove;
8th step, pincers worker facing-up dovetail groove.
Use during fish-tail cutter numerical control mill dovetail groove profile and adopt following corrective measure:
A. cutting speed adopts high-speed cutting or slow cutting;
B. coolant rate is increased;
C. fish-tail cutter anterior angle adds greatly 20 °-30 ° by 10 °.
Fish-tail cutter cutter of the present invention is that the anterior angle γ angle of 55 ° of fish-tail cutter cutters of the prior art is strengthened 7 °-10 °, and relief angle α strengthens at angle 2 °-5 °, and relief angle α ' strengthens at angle 2 °-4 °.
The processing of yielding aluminium matter dovetail groove is added hand scraping by the system of inserting and changes numerical control mill dovetail groove and Linear cut dovetail groove into by the present invention, by improving technological parameter, optimize Tool Design, improve the mode controller that is installed and add a series of improvement of distortion, prove to meet each form and position tolerance of aluminium matter dovetail groove and roughness requirements through repeatedly production practices.
Claims (2)
1. yielding structure aluminum dovetail groove method for fine finishing, is characterized in that carrying out according to following processing step:
The first step, use fish-tail cutter numerical control mill dovetail groove profile, and, half finish turning, finish turning three work steps rough turn at numerical control mill add man-hour, all place 3 ~ 4 hours after each work step completes;
Second step, Linear cut undercut;
3rd step, spark system square hole;
4th step, complete after the 3rd step and place 3 ~ 4 hours;
5th step, machining center milling dovetail groove;
6th step, use slow feeding linear cutting bed Linear cut two ends dovetail groove, amount of grinding selects 0.05mm, and cooling fluid electrical conductivity is selected 5;
7th step, surface treatment dovetail groove;
8th step, pincers worker facing-up dovetail groove.
2. yielding structure aluminum dovetail groove method for fine finishing according to claim 1, adopts following corrective measure when it is characterized in that using fish-tail cutter numerical control mill dovetail groove profile:
A. cutting speed adopts high-speed cutting or slow cutting;
B. coolant rate is increased;
C. fish-tail cutter anterior angle adds greatly 20 °-30 ° by 10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510077711.3A CN104690491A (en) | 2015-02-13 | 2015-02-13 | Precision machining method of easy-deformed structure aluminum dovetail groove |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510077711.3A CN104690491A (en) | 2015-02-13 | 2015-02-13 | Precision machining method of easy-deformed structure aluminum dovetail groove |
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| CN104690491A true CN104690491A (en) | 2015-06-10 |
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| CN201510077711.3A Pending CN104690491A (en) | 2015-02-13 | 2015-02-13 | Precision machining method of easy-deformed structure aluminum dovetail groove |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595559A (en) * | 2016-12-23 | 2017-04-26 | 贵州黎阳航空动力有限公司 | Alignment method for guaranteeing symmetry degree of dovetail groove pin hole |
| CN106735316A (en) * | 2016-11-17 | 2017-05-31 | 重庆江增船舶重工有限公司 | A kind of method for turning of inner hole deep groove |
| CN110614410A (en) * | 2019-09-20 | 2019-12-27 | 常州工学院 | Horizontal vibration device for dovetail groove electrolytic machining and dovetail groove machining method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2032518U (en) * | 1988-01-08 | 1989-02-15 | 抚顺石化公司石油一厂 | Flute milling machine for angle iron used on wood door and window |
| CN2761395Y (en) * | 2004-12-16 | 2006-03-01 | 湖北锦园板业有限公司 | Processing machine of wood working dovetail groove |
| CN102873386A (en) * | 2012-10-12 | 2013-01-16 | 天津商业大学 | Precision numerical control processing method for thin-wall aluminium plate partially provided with through holes |
| CN203778838U (en) * | 2014-02-28 | 2014-08-20 | 常州建华昌盛工具有限公司 | Dovetail groove end mill |
| CN203993219U (en) * | 2014-08-19 | 2014-12-10 | 南通力科机床制造有限公司 | Fixture for lifting platform finish-milling bottom surface and dovetail groove |
-
2015
- 2015-02-13 CN CN201510077711.3A patent/CN104690491A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2032518U (en) * | 1988-01-08 | 1989-02-15 | 抚顺石化公司石油一厂 | Flute milling machine for angle iron used on wood door and window |
| CN2761395Y (en) * | 2004-12-16 | 2006-03-01 | 湖北锦园板业有限公司 | Processing machine of wood working dovetail groove |
| CN102873386A (en) * | 2012-10-12 | 2013-01-16 | 天津商业大学 | Precision numerical control processing method for thin-wall aluminium plate partially provided with through holes |
| CN203778838U (en) * | 2014-02-28 | 2014-08-20 | 常州建华昌盛工具有限公司 | Dovetail groove end mill |
| CN203993219U (en) * | 2014-08-19 | 2014-12-10 | 南通力科机床制造有限公司 | Fixture for lifting platform finish-milling bottom surface and dovetail groove |
Non-Patent Citations (1)
| Title |
|---|
| 姜思进: "《铣床加工燕尾槽的方法》", 《职业》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735316A (en) * | 2016-11-17 | 2017-05-31 | 重庆江增船舶重工有限公司 | A kind of method for turning of inner hole deep groove |
| CN106595559A (en) * | 2016-12-23 | 2017-04-26 | 贵州黎阳航空动力有限公司 | Alignment method for guaranteeing symmetry degree of dovetail groove pin hole |
| CN110614410A (en) * | 2019-09-20 | 2019-12-27 | 常州工学院 | Horizontal vibration device for dovetail groove electrolytic machining and dovetail groove machining method |
| CN110614410B (en) * | 2019-09-20 | 2020-09-01 | 常州工学院 | Horizontal vibration device for dovetail groove electrolytic machining and dovetail groove machining method |
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Application publication date: 20150610 |