CN107138916A - A kind of method for improving the Thin-wall Aluminum Parts machining accuracy for gyro gimbal - Google Patents
A kind of method for improving the Thin-wall Aluminum Parts machining accuracy for gyro gimbal Download PDFInfo
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- CN107138916A CN107138916A CN201710260282.2A CN201710260282A CN107138916A CN 107138916 A CN107138916 A CN 107138916A CN 201710260282 A CN201710260282 A CN 201710260282A CN 107138916 A CN107138916 A CN 107138916A
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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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The present invention relates to a kind of method for improving the Thin-wall Aluminum Parts machining accuracy for gyro gimbal, comprise the following steps that：Step 1）Roughing is carried out to part noumenon；Step 2）First time heat treatment is carried out to part noumenon；Heat treatment uses the heat treatment of solid solution aging for the first time；Step 3）Semifinishing is carried out to part noumenon；Step 4）Second is carried out to part noumenon to be heat-treated；Second of heat treatment is using cold and hot two intermediate heat-treatments circulated；Step 5）Technique reinforcement is connected on the seal face of part noumenon；Step 6）Finishing before surface finishing；Step 7）Third time heat treatment is carried out to part noumenon, third time heat treatment uses the heat treatment of solid solution aging；Step 8）The finishing of final finish size after surface finishing；Step 9）Remove technique reinforcement.This method ensure that the Thin-wall Aluminum Parts crudy for gyro gimbal, it is to avoid due to processing waste that is unqualified and causing, greatly save cost.
Description
Technical field
The present invention relates to a kind of processing method, particularly a kind of Thin-wall Aluminum Parts processing improved for gyro gimbal
The method of precision.Belong to field of machining.
Background technology
Good using the outward appearance of aluminium alloy, lightweight, toughness, plasticity preferably, can be quenched, alloy can be made during Ageing Treatment
Reinforcing with high intensity, high-wearing feature etc. characteristic be widely used in target seeker product scope gyro gimbal it is aluminium alloy thin-walled
Part.
This Thin-wall Aluminum Parts for gyro gimbal require that machining accuracy is high, but due to this part poor rigidity,
It is difficult control accuracy during processing.Main performance part thin-walled deformation is big, and the top and bottom of part are only with three muscle rigidity of support
Difference, size 0.001mm~0.003mm requirement on machining accuracy with bearing fit is high.Poor rigidity causes processing to rotate uneven, chi
Very little processing is unstable, and processing is easily deformed, and when processing part bearing fit dimension, part vibration easily occurs, causes size to add
There is ellipse in work, and the axiality in bearing fit size and torque motor hole is overproof to scrap.The shaping weight of part and blank weight
The ratio between amount is 1/25, and allowance is larger, only leans on single machining, and efficiency is too low, and tool wear is big, and machining stress
Release easily part torsional deformation is occurred.Hole, torque motor hole and end face with bearing fit is in surface finishing oxidizing process
In, because the temperature rise of oxidation solution causes deformation, scrap dimension overproof.Due to deformation, when part coordinates with fixture, it is not
Cross pine to be exactly tension or even fill not enter, it is impossible to ensure part processing precision requirement.Part is in processing, aluminum alloy materials cutting
Area's temperature rises rapidly, and product is difficult to distribute near cutting edge, makes the too fast easy tipping of tool wear, destroys surface quality；It is conventional
Carry out surface finishing oxidation after the processing of technique part, single machining mode, the increase measure such as aging sequence, but to for
The above-mentioned measure of Thin-wall Aluminum Parts of gyro gimbal is not applied to.
The content of the invention
It is an object of the invention to provide a kind of method for improving the Thin-wall Aluminum Parts machining accuracy for gyro gimbal,
This method can effectively solve it is aluminium alloy thin-walled due to precision prescribed height, poor rigidity, processing when bad processing, be easily deformed, it is impossible to
The problem of ensureing machining accuracy.This method ensure that the Thin-wall Aluminum Parts crudy for gyro gimbal, it is to avoid by
In processing waste that is unqualified and causing, cost is greatlyd save.
The technical scheme is that：A kind of side for improving the Thin-wall Aluminum Parts machining accuracy for gyro gimbal
Method, it is characterized in that：This method is comprised the following steps that：
Step 1）Roughing is carried out to part noumenon；
Step 2）First time heat treatment is carried out to part noumenon；Heat treatment uses the heat treatment of solid solution aging for the first time；
Step 3）Semifinishing is carried out to part noumenon；
Step 4）Second is carried out to part noumenon to be heat-treated；At intermediate heat of second of the heat treatment using cold and hot two circulations
Reason；
Step 5）Technique reinforcement is connected on the seal face of part noumenon；
Step 6）Finishing before surface finishing；
Step 7）Third time heat treatment is carried out to part noumenon, third time heat treatment uses the heat treatment of solid solution aging；
Step 8）The finishing of final finish size after surface finishing；
Step 9）Remove technique reinforcement.
The step 1）Roughing：1) to the top of part noumenon, bottom, position it is cylindrical, positioning end face carry out turning；
2）Machining center milling, completes bearing fit hole, bearing locating surface, connecting hole, torque motor hole, torque motor locating surface size
Roughing, remove big allowance.
The step 2）With step 7）Solid solution aging heat treatment：First part noumenon surface is cleared up, makes surface
Chipless, then by part noumenon after oven heat to 90 DEG C of temperature, insulation 3h, then air cooling is to room temperature.
The step 3）Semifinishing using combined machining method carry out semifinishing：1）Top to part noumenon,
Bottom, position it is cylindrical, positioning end face carry out numerical control lathe semifinishing；2）Boring-milling center, completion bearing fit hole, bearing are fixed
Plane, connecting hole, torque motor hole, the semifinishing of torque motor locating surface size；3）Using wire cutting, electric pulse and machinery
Process muscle, the screwed hole of attachment screw, upper supporting surface, the bottom support surface being combined to part noumenon and dimensioned is formed；
The step 4）It is cold and hot two circulation intermediate heat-treatment；First cool the temperature to after -50~-60 DEG C, holding 1.5 ±
0.2 hour, then temperature is risen to after 90 ± 10 DEG C, kept for 3 ± 0.2 hours, then said process is twice repeatedly.
The step 5）Technique reinforcement be made up of rectangular platen and positioning table, positioning table is arranged under rectangular platen
Side, is structure as a whole with rectangular platen, and rectangular platen is provided at both ends with mounting hole, and positioning table is located at the upper support of part noumenon
Between face and bottom support surface, and it is brought into close contact.
The step 6）Surface finishing before finishing：By numerical control lathe locating and machining it is cylindrical, positioning end face complete Chinese musical scale
It is very little.
The step 8）Surface finishing after final finish size finishing：It is cylindrical fixed with the positioning of part noumenon
The heart, positioning end face positioning, by the indexing of digital controlled processing central machine tool " B " axle workbench, once complete precision machined bearing mating holes,
Bearing locating surface, connecting hole, torque motor hole, the finish size of torque motor locating surface, reached part machining accuracy and
Form and position tolerance technical requirements.
It is an advantage of the invention that：Machining roughing removes big allowance, and the homogenizing of first time solid solution aging adds
The heat treatment of work stress, improves the cutting ability of material, increases materials microstructure intensity；Semifinishing using machinery+wire cutting+
Electric pulse combined machining method, reduces machining deformation, improves the machining accuracy of part, secondary cold and hot two circulations
Intermediate heat-treatment, further homogenizing and machining stress, increase the rigidity of part using technique reinforcement, turn part work in-process
Dynamic to reach balance, cutting is uniform, controls the vibration of part work in-process；Finishing before surface finishing, improves the processing of part
The stability of the size of benchmark, the final heat treatment of the stable processing dimension of third time, eliminates the stress of surface finishing temperature, obtains
Good technique processability, is that follow-up final finishing is laid a good foundation；The essence of final finish size after surface finishing
Processing, it is ensured that part processing precision, Geometrical Tolerance Principle.By the application of this method, year saves the cost of raw material more than million.
Brief description of the drawings
Processing method of the present invention is described further with reference to embodiment accompanying drawing, but not as the restriction to this law：
Fig. 1 is structural representation of the present invention for the Thin-wall Aluminum Parts of gyro gimbal；
Fig. 2 is the structural representation of Fig. 1 technique reinforcement；
Fig. 3 is the top view of Fig. 2 technique reinforcement.
In figure：1st, part noumenon；2nd, bearing fit hole；3rd, bearing locating surface；4th, connecting hole；5th, top；6th, b axles；7th, muscle；
8th, technique reinforcement；9th, screw；10th, end face is positioned；11st, bottom；12nd, position cylindrical；13rd, torque motor hole；14th, torque motor
Locating surface；15th, upper supporting surface；16th, a axles；17th, seal face；18th, bottom support surface；8-1, rectangular platen；8-2, positioning table；8-3、
Mounting hole.
Embodiment
Embodiment 1
A kind of method for improving the Thin-wall Aluminum Parts machining accuracy for gyro gimbal, is comprised the following steps that：
Step 1）Roughing is carried out to part noumenon；
Step 2）First time heat treatment is carried out to part noumenon；Heat treatment uses the heat treatment of solid solution aging for the first time；
Step 3）Semifinishing is carried out to part noumenon；
Step 4）Second is carried out to part noumenon to be heat-treated；At intermediate heat of second of the heat treatment using cold and hot two circulations
Reason；
Step 5）Technique reinforcement is connected on the seal face of part noumenon；
Step 6）Finishing before surface finishing；
Step 7）Third time heat treatment is carried out to part noumenon, third time heat treatment uses the heat treatment of solid solution aging；
Step 8）The finishing of final finish size after surface finishing；
Step 9）Remove technique reinforcement.
Embodiment 2
A kind of method for improving the Thin-wall Aluminum Parts machining accuracy for gyro gimbal, is comprised the following steps that：
Step 1）Roughing is carried out to part noumenon；1) to the top of part noumenon 1, bottom, position it is cylindrical, positioning end face enter
Driving is cut；2）Machining center milling, completion bearing fit hole, bearing locating surface, connecting hole, torque motor hole, torque motor are fixed
The roughing of plane size, removes big allowance.
Step 2）First time heat treatment is carried out to part noumenon；Heat treatment uses the heat treatment of solid solution aging for the first time；First
Part noumenon surface is cleared up, makes surface chipless, then by part noumenon in oven heat to 90 DEG C of temperature, insulation 3h
Afterwards, then air cooling to room temperature.
Step 3）Semifinishing is carried out to part noumenon；The semifinishing carries out semifinishing using combined machining method：
1）To the top of part noumenon, bottom, position cylindrical, positioning end face progress numerical control lathe semifinishing；2）Boring-milling center, it is complete
Into bearing fit hole, bearing locating surface, connecting hole, torque motor hole, torque motor locating surface size semifinishing；3）Using
Wire cutting, electric pulse are combined muscle to part noumenon, the screwed hole of attachment screw, upper supporting surface, lower support with machining
Dimensioned is formed in face；
Step 4）Second is carried out to part noumenon to be heat-treated；At intermediate heat of second of the heat treatment using cold and hot two circulations
Reason；First cool the temperature to after -50~-60 DEG C, kept for 1.5 ± 0.2 hours, then temperature is risen to after 90 ± 10 DEG C, holding 3 ±
0.2 hour, then said process was twice repeatedly.
Step 5）Technique reinforcement is connected on the seal face of part noumenon；As shown in Figures 2 and 3, described technique adds
Strengthening tendons 8 is made up of rectangular platen 8-1 and positioning table 8-2, and positioning table is arranged on below rectangular platen, is integrated with rectangular platen
Structure, rectangular platen is provided at both ends with mounting hole 8-3, positioning table be located at part noumenon 1 upper supporting surface and bottom support surface it
Between, and be brought into close contact.
Step 6）Finishing before surface finishing；By numerical control lathe locating and machining it is cylindrical, positioning end face finish size.
Step 7）Third time heat treatment is carried out to part noumenon, third time heat treatment uses the heat treatment of solid solution aging；First
Part noumenon surface is cleared up, makes surface chipless, then by part noumenon in oven heat to 90 DEG C of temperature, insulation 3h
Afterwards, then air cooling to room temperature.
Step 8）The finishing of final finish size after surface finishing；With the positioning external centring of part noumenon, positioning
End face is positioned, and by the indexing of digital controlled processing central machine tool " B " axle workbench, once completes precision machined bearing mating holes, bearing fixed
Plane, connecting hole, torque motor hole, the finish size of torque motor locating surface, have reached that the machining accuracy and morpheme of part are public
Poor technical requirements.
Step 9）Remove technique reinforcement.
Embodiment 3
As shown in figure 1, the Thin-wall Aluminum Parts for gyro gimbal are prior art, it includes part noumenon 1, described zero
Part body at least includes：Bearing fit hole 2, torque motor hole 13, screw 9, positioning cylindrical 12, positioning end face 10, bearing fit
Hole 2 is less than torque motor hole 13, and is distributed on the top 5 of part noumenon 1, coaxial with a axles 16, symmetrical with b axles 6, positions cylindrical
12nd, positioning end face 10 is in the bottom 11 of processing body 1, and the top 5 of part noumenon 1 and the bottom 11 of part noumenon 1 are by muscle 7 and logical
Screw 9 is crossed to connect.
The raising of the present invention is comprised the following steps that for the method for the Thin-wall Aluminum Parts machining accuracy of gyro gimbal：Step
Rapid 1）Roughing is carried out to part noumenon；1) top 5 of part noumenon 1, bottom 11, positioning cylindrical 12, positioning end face 10 are entered
Driving is cut；2）Machining center milling, completes bearing fit hole 2, bearing locating surface 3, connecting hole 4, torque motor hole 13, moment of torsion electricity
The roughing of the size of machine locating surface 14, removes big allowance.
Step 2）First time heat treatment is carried out to part noumenon 1；Heat treatment uses the heat treatment of solid solution aging for the first time；First
Part noumenon surface is cleared up, makes surface chipless, then by part noumenon in oven heat to 90 DEG C of temperature, insulation 3h
Afterwards, then air cooling to room temperature.Heat treatment homogenizing and the machining stress of reduction part, improve material structure intensity for the first time；
Step 3）Semifinishing is carried out to part noumenon；The semifinishing carries out semifinishing using combined machining method：1）It is right
The top of part noumenon, bottom, positioning cylindrical 12, positioning end face 10 carry out numerical control lathe semifinishing；2）Boring-milling center, it is complete
Into bearing fit hole 2, bearing locating surface 3, connecting hole 4, torque motor hole 13, the size of torque motor locating surface 14 half finishing
Work；3）Muscle 7, the screwed hole of attachment screw 9, upper branch to part noumenon is combined with machining using wire cutting, electric pulse
Dimensioned is formed in support face 15, bottom support surface 18；
Step 4）Second is carried out to part noumenon to be heat-treated；At intermediate heat of second of the heat treatment using cold and hot two circulations
Reason；First cool the temperature to after -50~-60 DEG C, kept for 1.5 ± 0.2 hours, then temperature is risen to after 90 ± 10 DEG C, holding 3 ±
0.2 hour, then said process was twice repeatedly.Further control and homogenizing machining stress；
Step 5）Technique reinforcement 8 is connected on the seal face 17 of part noumenon 1 by screw 9；The processing for increasing part is firm
Property, vibration when eliminating part processing improves suface processing quality；As shown in Figures 2 and 3, described technique reinforcement 8 is by square
Shape pressing plate 8-1 and positioning table 8-2 compositions, positioning table is arranged on below rectangular platen, is structure as a whole with rectangular platen, rectangle pressure
Plate is provided at both ends with mounting hole 8-3, and positioning table is located between the upper supporting surface 15 of part noumenon 1 and bottom support surface 18, and tightly
It is closely connected to close.Mounting hole 8-3 is corresponding with the screwed hole of screw 9.
Step 6）Finishing before surface finishing；By numerical control lathe locating and machining cylindrical 12, the finish size of positioning end face 10.
For sequent surface finish processing bearing fit hole 2, bearing locating surface 3, torque motor hole 13, the complete Chinese musical scale of torque motor locating surface 14
It is very little to lay a good foundation,
Step 7）Third time heat treatment is carried out to part noumenon, third time heat treatment uses the heat treatment of solid solution aging；First by zero
Part body surface is cleared up, and makes surface chipless, then by part noumenon after oven heat to 90 DEG C of temperature, insulation 3h,
Then air cooling is to room temperature.Final heat treatment eliminates part machining stress, stabilizer elements processing dimension, the manufacturability obtained.
Step 8）The finishing of final finish size after surface finishing；With cylindrical 12 centering of the positioning of part noumenon, determine
Position end face 10 is positioned, and by the indexing of digital controlled processing central machine tool " B " axle workbench, by bearing fit hole 2, bearing locating surface 3, is turned round
Torque motor hole 13, the dimensioned of torque motor locating surface 14 to finish size, it is ensured that part bearing mating holes 2, torque motor
The axiality in hole 13, meets the positive-angle required precision of a axles 16 and b axles 6, has reached the machining accuracy and form and position tolerance of part
Technical requirements.
Step 9）Technique reinforcement is removed, processing is completed.
The method of the present invention ensure that Thin-wall Aluminum Parts crudy for gyro gimbal, it is to avoid due to processing
The unqualified and waste that causes, greatlys save cost.
The part and structure and process that the present embodiment is not described in detail belong to the well-known components and conventional knot of the industry
Structure or conventional means, are not described one by one here.
Claims (8)
1. a kind of method for improving the Thin-wall Aluminum Parts machining accuracy for gyro gimbal, it is characterized in that：The tool of this method
Body step is as follows：
Step 1）Roughing is carried out to part noumenon；
Step 2）First time heat treatment is carried out to part noumenon；Heat treatment uses the heat treatment of solid solution aging for the first time；
Step 3）Semifinishing is carried out to part noumenon；
Step 4）Second is carried out to part noumenon to be heat-treated；At intermediate heat of second of the heat treatment using cold and hot two circulations
Reason；
Step 5）Technique reinforcement is connected on the seal face of part noumenon；
Step 6）Finishing before surface finishing；
Step 7）Third time heat treatment is carried out to part noumenon, third time heat treatment uses the heat treatment of solid solution aging；
Step 8）The finishing of final finish size after surface finishing；
Step 9）Remove technique reinforcement.
2. a kind of method for improving the Thin-wall Aluminum Parts machining accuracy for gyro gimbal according to claim 1,
It is characterized in that：The step 1）Roughing：1) to the top of part noumenon, bottom, position it is cylindrical, positioning end face carry out car
Cut；2）Machining center milling, completes bearing fit hole, bearing locating surface, connecting hole, torque motor hole, torque motor locating surface
The roughing of size, removes big allowance.
3. a kind of method for improving the Thin-wall Aluminum Parts machining accuracy for gyro gimbal according to claim 1,
It is characterized in that：The step 2）With step 7）Solid solution aging heat treatment：First part noumenon surface is cleared up, makes surface
Chipless, then by part noumenon after oven heat to 90 DEG C of temperature, insulation 3h, then air cooling is to room temperature.
4. a kind of method for improving the Thin-wall Aluminum Parts machining accuracy for gyro gimbal according to claim 1,
It is characterized in that：The step 3）Semifinishing using combined machining method carry out semifinishing：1）Top to part noumenon,
Bottom, position it is cylindrical, positioning end face carry out numerical control lathe semifinishing；2）Boring-milling center, completion bearing fit hole, bearing are fixed
Plane, connecting hole, torque motor hole, the semifinishing of torque motor locating surface size；3）Using wire cutting, electric pulse and machinery
Process muscle, the screwed hole of attachment screw, upper supporting surface, the bottom support surface being combined to part noumenon and dimensioned is formed.
5. a kind of method for improving the Thin-wall Aluminum Parts machining accuracy for gyro gimbal according to claim 1,
It is characterized in that：The step 4）It is cold and hot two circulation intermediate heat-treatment；First cool the temperature to after -50~-60 DEG C, keep
1.5 ± 0.2 hours, then temperature is risen to after 90 ± 10 DEG C, kept for 3 ± 0.2 hours, then said process is twice repeatedly.
6. a kind of method for improving the Thin-wall Aluminum Parts machining accuracy for gyro gimbal according to claim 1,
It is characterized in that：The step 5）Technique reinforcement be made up of rectangular platen and positioning table, positioning table is arranged on rectangular platen
Lower section, is structure as a whole with rectangular platen, and rectangular platen is provided at both ends with mounting hole, and positioning table is located at the upper branch of part noumenon
Between support face and bottom support surface, and it is brought into close contact.
7. a kind of method for improving the Thin-wall Aluminum Parts machining accuracy for gyro gimbal according to claim 1,
It is characterized in that：The step 6）Surface finishing before finishing：By numerical control lathe locating and machining it is cylindrical, positioning end face complete Chinese musical scale
It is very little.
8. a kind of method for improving the Thin-wall Aluminum Parts machining accuracy for gyro gimbal according to claim 1,
It is characterized in that：The step 8）Surface finishing after final finish size finishing：It is cylindrical fixed with the positioning of part noumenon
The heart, positioning end face positioning, by the indexing of digital controlled processing central machine tool " B " axle workbench, once complete precision machined bearing mating holes,
Bearing locating surface, connecting hole, torque motor hole, the finish size of torque motor locating surface, reached part machining accuracy and
Form and position tolerance technical requirements.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710260282.2A CN107138916B (en) | 2017-04-20 | 2017-04-20 | A method of improving the Thin-wall Aluminum Parts machining accuracy for being used for gyro gimbal |
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| CN111112957A (en) * | 2020-01-07 | 2020-05-08 | 中国航空工业集团公司北京航空精密机械研究所 | Machining method for reducing deformation of hollow aluminum alloy part |
| CN112192159A (en) * | 2020-10-12 | 2021-01-08 | 贵州航天电子科技有限公司 | Hollow frame part machining method |
| CN113977200A (en) * | 2021-11-05 | 2022-01-28 | 上海机电工程研究所 | Guide rail processing method and special boring bar |
| CN114406784A (en) * | 2021-12-20 | 2022-04-29 | 彩虹显示器件股份有限公司 | Method for avoiding vibration during processing of thin-wall welded assembly |
| CN115647757A (en) * | 2022-12-26 | 2023-01-31 | 西安航天精密机电研究所 | Manufacturing and deformation detection method for two-floating-gyro conductive hairspring |
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| CN111112957A (en) * | 2020-01-07 | 2020-05-08 | 中国航空工业集团公司北京航空精密机械研究所 | Machining method for reducing deformation of hollow aluminum alloy part |
| CN112192159A (en) * | 2020-10-12 | 2021-01-08 | 贵州航天电子科技有限公司 | Hollow frame part machining method |
| CN113977200A (en) * | 2021-11-05 | 2022-01-28 | 上海机电工程研究所 | Guide rail processing method and special boring bar |
| CN114406784A (en) * | 2021-12-20 | 2022-04-29 | 彩虹显示器件股份有限公司 | Method for avoiding vibration during processing of thin-wall welded assembly |
| CN114406784B (en) * | 2021-12-20 | 2023-09-22 | 彩虹显示器件股份有限公司 | Method for avoiding vibration during processing of thin-wall welding assembly |
| CN115647757A (en) * | 2022-12-26 | 2023-01-31 | 西安航天精密机电研究所 | Manufacturing and deformation detection method for two-floating-gyro conductive hairspring |
| CN115647757B (en) * | 2022-12-26 | 2023-04-04 | 西安航天精密机电研究所 | Manufacturing method of two-floating-gyro conductive hairspring |
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| CN107138916B (en) | 2019-04-26 |
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