CN108098255A - A kind of TA15 titanium alloys frame class parts machining process - Google Patents
A kind of TA15 titanium alloys frame class parts machining process Download PDFInfo
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- CN108098255A CN108098255A CN201711231669.1A CN201711231669A CN108098255A CN 108098255 A CN108098255 A CN 108098255A CN 201711231669 A CN201711231669 A CN 201711231669A CN 108098255 A CN108098255 A CN 108098255A
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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
Abstract
The present invention relates to a kind of TA15 titanium alloys frame class parts machining processes, belong to aeronautical manufacture manufacture field.It includes（1）, bore fabrication hole,（2）, U bore prebored hole,（3）, roughing vallecular cavity,（4）, insert milling corner,（5）, finish-milling rib, edge strip top surface,（6）, finish-milling web,（7）, finish-milling periphery,（8）, finish-milling corner；The present invention solves the processing problems of TA15 titanium alloy difficult-to-machine materials, be it provides a set of science, economy, efficient technical solutions in aero frame shape workpiece using processing, it improves the processing efficiency of TA15 titanium alloy frame class parts, save cutter expense, and provide finished part qualification rate.
Description
Technical field
The present invention relates to a kind of TA15 titanium alloys frame class parts machining processes, belong to aeronautical manufacture manufacture field.
Background technology
The use of titanium and its alloy in national defense industry is based primarily upon the excellent properties of titanium alloy：Light weight, specific strength
Height, high temperature resistant, good corrosion resistance, high tenacity, it is nonmagnetic, can be matched with composite material.These are all titanium alloy in national defence work
Application in industry provides condition.
At present, TA15 titanium alloys are more and more extensive in the application of aviation field, and TA15 titanium alloys are typical high tough classes
Difficult-to-machine material, processing characteristics are mainly manifested in the following aspects：
1., TA15 titanium alloys intensity it is high, hardness is big, it requires that process equipment power is big, and cutter should have higher intensity and hard
Degree.
2., chip and rake face contact area it is small, point of a knife stress is big.Compared with 45 steel, although the cutting force of titanium alloy is only
Have its 2/3~3/4, but the contact area of titanium alloy chip and rake face is small, the stress that point of a knife or cutting edge are born is instead very
Greatly, point of a knife or cutting edge are easy to wear.
3., TA15 titanium alloy friction factors are big, thermal conductivity factor is low, be respectively the 1/4 and 1/16 of iron and aluminium.Cutter is with cutting
The contact length of bits is short, without easily distributing in the small area that cutting heat is accumulated near cutting edge.These factors cause titanium
The cutting temperature of alloy is very high, and tool wear is caused to accelerate and influences processing quality.
4., since TA15 titanium alloy elastic modulus is low, workpiece rebound is big during machining, and knife face causes to grind after squeezing knife tool
Damage aggravation and workpiece deformation.
5., TA15 titanium alloy high-temperature chemisms it is very high, it is anti-that chemistry easily occurs with the gaseous impurities such as hydrogen, the oxygen in air
Should, hardened layer is generated, has been further exacerbated by the abrasion of cutter.
6., in the processing of TA15 titanium alloy cuttings, workpiece material is easily bonded with tool surface, very high cutting temperature in addition
Degree, cutter is also easy to produce diffusive wear and bonding is worn.
Compared with aluminium alloy, TA15 titanium alloy more than processing characteristics determine its processing technology to lathe, cutter, processing work
Process proposes higher requirement, except selecting high-rate cutting lathe, is equipped with outside suitable process tool, with greater need for research
It is proposed a set of science, economy, efficient technical solutions.
The content of the invention
It is an object of the invention to be directed to, TA15 titanium alloy materials intensity is high, hardness is big, friction factor is big, thermal conductivity factor is low
Deng difficult processing characteristics, a kind of TA15 titanium alloys frame class parts machining process is provided.
The present invention to achieve these goals, adopts the following technical scheme that：
A kind of TA15 titanium alloys frame class parts machining process, it includes：
（1）, bore fabrication hole；
（2）, U bore prebored hole：Each frame centre position of frame class part blank, which is drilled in, using indexable tool U carries out prebored hole, drilling
Mode gets into bottom acyclic patterns using one, it is necessary to which full knife drilling, drilling depth is than milling depth depth 1mm, and web leaves
Surplus；Maximum drilling depth is necessarily less than chip removal slot length；
（3）, roughing vallecular cavity：Processing method from inside to outside；Using the big cutting-in milling cutter processing of major diameter；To reduce cutter in penetration of a cutting tool
Measure it is smaller in the case of generate impact vibration damage and unnecessary abrasion, cutter track corner and must add arc transition, reduce knife
Tool impact；
（4）, insert milling corner：When the feature of deep trouth or narrow slot need to use big draw ratio tool sharpening, turned using axial slotting milling
Angle mode reduces vibration cutting, increases Tool in Cutting rigidity；Axial, radial slack, which cannot be more than, inserts milling cutter cutting parameter, no
It can cut wound part base angle；
（5）, finish-milling rib, edge strip top surface：Rib, edge strip top surface processing arrangement before finish-milling web, add at this time after rough milling
Ministry of worker's position rigidity is stronger, increases cutting stability；
It is divided into according to rib, edge strip shape as flat-topped rib, diagonal bar；
Above-mentioned rib, edge strip type are required for carrying out according to following processing method：
1. being processed using climb cutting, upmilling is avoided；
2. diagonal bar uses unidirectional climb cutting row butt formula, machine direction must exist from inclined-plane minimum point to peak to avoid cutter
Blade tipping during processing downwards；
（6）, finish-milling web：Plunge cut way must be that spiral is cut or cycloid is cut, and screw diameter and cut angle and have to comply with
Tool in Cutting parameter, cut speed be normal process feed speed 50%, processing method is necessary for from the inside to the outside；Cutter track editor
Method is consistent with vallecular cavity is rough milled；
（7）, finish-milling periphery：Slot periphery axial stratification is processed in place using solid tool, according to titanium alloy by the characteristic of knife, footpath
Ensure accessory size to one layer of 0.2~0.5mm surpluses light, one knife must be increased；
Programmed method uses five axis order millings；Using circular arc into withdrawing；Corner increases appropriate arc transition；Using diameter 20mm or
The multiple tooth solid tool processing of 25mm；
（8）, finish-milling corner：Slotting milling has made corner in place, the cutter that when finish-milling slot periphery uses for Φ 20mm or Φ 25mm,
Nearby there are slotting milling remnants in side wall to corner, it is necessary to carry out corner finishing using diameter of phi 12mm solid tools, main purpose will
Side wall connects flat, is cut using axial stratification.
Further, in step（3）, the type that uses of the big cutting-in milling cutter of major diameter in roughing vallecular cavity for corn milling,
Weld milling cutter or wavy-edge milling cutter.
Further, in step（3）, increase milling surplus Ap in roughing vallecular cavity：10mm~30mm.
Beneficial effects of the present invention：
The present invention solves the processing problems of TA15 titanium alloy difficult-to-machine materials, is its application processing in aero frame shape workpiece
A set of science, economy, efficient technical solutions are provided, the processing efficiency of TA15 titanium alloy frame class parts is improved, saves
Cutter expense, and provide finished part qualification rate.
Description of the drawings
Fig. 1 is the titanium alloy frame class design of part schematic diagram of the present invention.
Specific embodiment
In order to make the purpose of the present invention, technical solution and advantageous effect clearer, below in conjunction with the attached drawing of the present invention
To carry out clear, complete statement.
A kind of TA15 titanium alloys frame class parts machining process, including:
1st, fabrication hole is bored；
2nd, U bores prebored hole：Each frame centre position of frame class part blank, which is drilled in, using indexable tool U carries out prebored hole, drilling side
Formula gets into bottom acyclic patterns using one, it is necessary to full knife drilling（Just hole cannot be bored）, drilling depth than milling depth depth 1mm, and
And web leaves certain surplus；Maximum drilling depth is necessarily less than chip removal slot length；
3rd, roughing vallecular cavity：(Outward helical or Offset on part One-Way) mode is processed from inside to outside.It adopts
With the big cutting-in milling cutter of major diameter（Corn milling, welding milling cutter, wavy-edge milling cutter）Processing；To reduce cutter in the smaller feelings of bite
Impact vibration damage and unnecessary abrasion are generated under condition, can suitably increase milling surplus（Ap：10mm~30mm, depending on lathe master
Shaft power, depending on Tool in Cutting condition）Cutter track corner must add arc transition, reduce cutter attack；
4th, milling corner is inserted：In deep trouth, narrow slot when features need to use bigger draw ratio tool sharpening, turned using axial slotting milling
Angle mode is most favourable, it is possible to reduce vibration cutting increases Tool in Cutting rigidity.Axial, radial slack, which cannot be more than, inserts milling cutter
Cutting parameter；It is unable to cut wound part base angle R；
5th, finish-milling rib, edge strip top surface：Rib, the processing of edge strip top surface are typically scheduled at after rough milling before finish-milling web, at this time
Working position rigidity is stronger, increases cutting stability.It is divided into according to rib, edge strip shape as flat-topped rib, diagonal bar etc..No matter which kind of
Type is required for carrying out according to following processing method：1. being processed using climb cutting, upmilling is avoided.2. diagonal bar is cut using unidirectional climb cutting row
Mode, machine direction must from inclined-plane minimum point to peak, to avoid cutter in downward processing blade tipping.
6th, finish-milling web：Plunge cut way must be that spiral is cut or cycloid is cut, and screw diameter and cut angle and must accord with
Tool in Cutting parameter is closed, cuts speed is about normal process feed speed 50%, processing method is necessary for from the inside to the outside
（Outward helical or Offset on part One-Way）；Cutter track edit methods are consistent with vallecular cavity is rough milled；
7th, finish-milling periphery：Slot periphery axial stratification is processed in place using solid tool, it is contemplated that titanium alloy is by knife characteristic, radial direction
One layer of 0.2~0.5mmm surpluses light, one knife must be increased and ensure accessory size.Programmed method uses five axis order millings；Using circular arc into
Withdrawing；Corner increases appropriate arc transition；It is processed using the multiple tooth solid tool of diameter 20mm or 25mmm；
8th, finish-milling corner：Slotting milling has made corner in place, but the cutter used during finish-milling slot periphery is Φ 20mm or Φ 25mm,
Nearby there are slotting milling remnants in side wall to corner, it is necessary to carry out corner finishing using diameter of phi 12mm solid tools, main purpose will
Side wall connects flat, is cut using axial stratification；The appropriate circular arc of corner, circular arc is into withdrawing.
Claims (3)
1. a kind of TA15 titanium alloys frame class parts machining process, it is characterised in that：
（1）, bore fabrication hole；
（2）, U bore prebored hole：Each frame centre position of frame class part blank, which is drilled in, using indexable tool U carries out prebored hole, drilling
Mode gets into bottom acyclic patterns using one, it is necessary to which full knife drilling, drilling depth is than milling depth depth 1mm, and web leaves
Surplus；Maximum drilling depth is necessarily less than chip removal slot length；
（3）, roughing vallecular cavity：Processing method from inside to outside；Using the big cutting-in milling cutter processing of major diameter；To reduce cutter in penetration of a cutting tool
Measure it is smaller in the case of generate impact vibration damage and unnecessary abrasion, cutter track corner and must add arc transition, reduce knife
Tool impact；
（4）, insert milling corner：When the feature of deep trouth or narrow slot need to use big draw ratio tool sharpening, turned using axial slotting milling
Angle mode reduces vibration cutting, increases Tool in Cutting rigidity；Axial, radial slack, which cannot be more than, inserts milling cutter cutting parameter, no
It can cut wound part base angle；
（5）, finish-milling rib, edge strip top surface：Rib, edge strip top surface processing arrangement before finish-milling web, add at this time after rough milling
Ministry of worker's position rigidity is stronger, increases cutting stability；
It is divided into according to rib, edge strip shape as flat-topped rib, diagonal bar；
Above-mentioned rib, edge strip type are required for carrying out according to following processing method：
1. being processed using climb cutting, upmilling is avoided；
2. diagonal bar uses unidirectional climb cutting row butt formula, machine direction must exist from inclined-plane minimum point to peak to avoid cutter
Blade tipping during processing downwards；
（6）, finish-milling web：Plunge cut way must be that spiral is cut or cycloid is cut, and screw diameter and cut angle and have to comply with
Tool in Cutting parameter, cut speed be normal process feed speed 50%, processing method is necessary for from the inside to the outside；Cutter track editor
Method is consistent with vallecular cavity is rough milled；
（7）, finish-milling periphery：Slot periphery axial stratification is processed in place using solid tool, according to titanium alloy by the characteristic of knife, footpath
Ensure accessory size to one layer of 0.2~0.5mm surpluses light, one knife must be increased；
Programmed method uses five axis order millings；Using circular arc into withdrawing；Corner increases appropriate arc transition；Using diameter 20mm or
The multiple tooth solid tool processing of 25mm；
（8）, finish-milling corner：Slotting milling has made corner in place, the cutter that when finish-milling slot periphery uses for Φ 20mm or Φ 25mm,
Nearby there are slotting milling remnants in side wall to corner, it is necessary to carry out corner finishing using diameter of phi 12mm solid tools, main purpose will
Side wall connects flat, is cut using axial stratification.
2. TA15 titanium alloys frame class parts machining process according to claim 1, it is characterised in that：In step（3）, it is thick plus
The type that the big cutting-in milling cutter of major diameter in work vallecular cavity uses is corn milling, welding milling cutter or wavy-edge milling cutter.
3. TA15 titanium alloys frame class parts machining process according to claim 1, it is characterised in that：In step（3）, it is thick plus
Increase milling surplus Ap in work vallecular cavity：10mm~30mm.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109048206A (en) * | 2018-10-17 | 2018-12-21 | 江西洪都航空工业集团有限责任公司 | A kind of TA17 titanium alloy wall panel class parts machining process |
| CN109604685A (en) * | 2018-11-30 | 2019-04-12 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of thin wall high temperature alloy part lace processing method |
| CN109822140A (en) * | 2019-01-30 | 2019-05-31 | 武汉船用机械有限责任公司 | The processing method of curved surface slot |
| CN110238606A (en) * | 2019-06-18 | 2019-09-17 | 成都飞机工业（集团）有限责任公司 | A kind of processing method of the open vallecular cavity of web part |
| CN110625340A (en) * | 2019-10-08 | 2019-12-31 | 江西洪都航空工业集团有限责任公司 | TA15 titanium alloy support class forge piece blank part machining process |
| CN111168130A (en) * | 2020-03-16 | 2020-05-19 | 沈阳飞机工业（集团）有限公司 | Method for milling large-scale complex-structure AF1410 steel after quenching |
| CN111230192A (en) * | 2020-02-19 | 2020-06-05 | 中国第一汽车股份有限公司 | Groove segmentation processing method |
| CN113560810A (en) * | 2021-07-26 | 2021-10-29 | 成都飞机工业（集团）有限责任公司 | Deep and narrow groove cavity machining method |
| CN113664483A (en) * | 2021-08-18 | 2021-11-19 | 南昌新宝路航空科技有限公司 | Metal part machining process |
| CN114227154A (en) * | 2021-12-07 | 2022-03-25 | 中航贵州飞机有限责任公司 | Method for processing corner of frame part |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109048206A (en) * | 2018-10-17 | 2018-12-21 | 江西洪都航空工业集团有限责任公司 | A kind of TA17 titanium alloy wall panel class parts machining process |
| CN109604685A (en) * | 2018-11-30 | 2019-04-12 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of thin wall high temperature alloy part lace processing method |
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| CN110238606A (en) * | 2019-06-18 | 2019-09-17 | 成都飞机工业（集团）有限责任公司 | A kind of processing method of the open vallecular cavity of web part |
| CN110625340A (en) * | 2019-10-08 | 2019-12-31 | 江西洪都航空工业集团有限责任公司 | TA15 titanium alloy support class forge piece blank part machining process |
| CN111230192A (en) * | 2020-02-19 | 2020-06-05 | 中国第一汽车股份有限公司 | Groove segmentation processing method |
| CN111168130A (en) * | 2020-03-16 | 2020-05-19 | 沈阳飞机工业（集团）有限公司 | Method for milling large-scale complex-structure AF1410 steel after quenching |
| CN113560810A (en) * | 2021-07-26 | 2021-10-29 | 成都飞机工业（集团）有限责任公司 | Deep and narrow groove cavity machining method |
| CN113560810B (en) * | 2021-07-26 | 2022-09-20 | 成都飞机工业（集团）有限责任公司 | Deep and narrow groove cavity machining method |
| CN113664483A (en) * | 2021-08-18 | 2021-11-19 | 南昌新宝路航空科技有限公司 | Metal part machining process |
| CN114227154A (en) * | 2021-12-07 | 2022-03-25 | 中航贵州飞机有限责任公司 | Method for processing corner of frame part |
| CN114227154B (en) * | 2021-12-07 | 2023-06-30 | 中航贵州飞机有限责任公司 | Processing method of frame part corner |
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