CN109732283A - Machining method of large thin-wall workpiece - Google Patents
Machining method of large thin-wall workpiece Download PDFInfo
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- CN109732283A CN109732283A CN201910025792.0A CN201910025792A CN109732283A CN 109732283 A CN109732283 A CN 109732283A CN 201910025792 A CN201910025792 A CN 201910025792A CN 109732283 A CN109732283 A CN 109732283A
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- wall
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- large thin
- side flange
- vehicle
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Abstract
The invention discloses a processing method of a large-scale thin-wall workpiece, which belongs to the field of machining and comprises the following steps: step 1: fixing the workpiece on a workbench by using an A-side flange of the large-sized thin-wall workpiece; step 2: turning the inner wall of a large thin-wall workpiece, wherein the middle position inside the large thin-wall workpiece is turned into a straight platform, and a tapered inner wall is arranged above the straight platform; and step 3: turning over the large thin-wall workpiece, and fixing the workpiece on a workbench by using a B-side flange of the large thin-wall workpiece in the same manner as the step 1; and 4, step 4: and (3) lathing the inner wall of the large thin-wall workpiece, wherein the inner wall of the large thin-wall workpiece is lathed to be a tapered inner wall and is superposed with the inner wall in the step (2).
Description
Technical field
The present invention relates to machining fields, and in particular to a kind of processing method of large thin-wall workpiece.
Background technique
The processing of thin-wall workpiece, in particular for large aperture, high dimensional accuracy, structure lay particular stress on thin-wall complicated type chamber, because
For the limitation of structure, difficulty of processing is very big.Machining allowance is big, shape is coordinated to require height, relative rigidity lower, therefore processing technology
Property it is poor, practice have shown that, in thin-wall workpiece process there are three distinct issues: processing vibration, part allow knife deformation, it is whole plus
Work deformation.
This programme is long with length for one kind, diameter is big, structure is complicated in structural type face, camber line curvature is according to particular law
It changes greatly, the workpiece for the features such as wall thickness is relatively thin, as shown, including two A, B flange faces, the inner wall with taper and outside
Workpiece on wall, requirement on machining accuracy is high, and diameter dimension required precision is high, and to meet these requirements, technical staff is adopted at present
With the mode of conservative small cutting output multistep machining, device configuration, machined parameters are solved, cutter quivers knife, polishing, size control
A series of technical problems such as system, but its processing quality and processing efficiency cannot be guaranteed always.
In view of the above-mentioned problems of the prior art, the design and use experience of present invention combination related fields many years,
It is aided with too strong professional knowledge, has manufactured and designed a kind of processing method of large thin-wall workpiece, to overcome drawbacks described above.
Summary of the invention
For the problems of in the prior art, a kind of processing method of large thin-wall workpiece provided by the invention, energy
It enough avoids processing vibration, part that knife deformation and overall processing is allowed to deform, while guaranteeing processing efficiency and processing quality.
To achieve the goals above, The technical solution adopted by the invention is as follows: a kind of processing method of large thin-wall workpiece,
The following steps are included:
Step 1: using the A side flange of large thin-wall workpiece that workpiece is fixed on the table；
Step 2: vehicle large thin-wall workpiece inner wall, large thin-wall inside workpiece middle position vehicle are straight platform, are above straight platform
Inner wall with taper；
Step 3: by large thin-wall workpiece turning, with step 1, identical mode utilizes the B side flange of large thin-wall workpiece will
Workpiece is fixed on the table；
Step 4: vehicle large thin-wall workpiece inner wall, large thin-wall inside workpiece vehicle be the inner wall with taper, and in step 2
Inner wall is overlapped.
Preferably, before step 2, Vehicle Processing B side flange end face and made allowance determine the final datum level of B side flange, Che great
When type thin-wall workpiece inner wall, between the final datum level of large thin-wall workpiece B side flange and B side flange end face vehicle be straight platform, step 2 it
Afterwards, vehicle goes B side flange end face surplus, guarantees the final datum-plane position of B side flange；
Before step 4, Vehicle Processing A side flange end face and made allowance determine the final datum level of A side flange；Vehicle large size is thin
Walled workpieces inner wall, vehicle is straight platform between the final datum level of large thin-wall workpiece A side flange and A side flange end face, after step 4, vehicle
A side flange end face surplus is gone, guarantees the final datum-plane position of A side flange.
Preferably, the end face of flange for lengthening the lathe tool processing side A and/or the side B is utilized.
Preferably, after step 1, clump weight is fixed on to workbench in advance to balance up greatly according to theoretical calculation numerical value
Structure on type thin-wall workpiece lateral wall, leaves and takes machining allowance test run B side flange end face and large thin-wall excircle of workpiece, and measurement is outer
Round and B side flange end face jitter values, adjust clump weight；
In step 3, machining allowance test run A side flange end face and large thin-wall excircle of workpiece are left and taken, the jump of outer circle is measured
It is dynamic, adjust clump weight.
Preferably, the bounce of outer circle and/or B side flange end face is measured by playing table.
Preferably, after step 2 and step 4, switching special glazing machine, adjustment polished silicon wafer angle is matched with inner wall taper,
Step 2 and step 4 are polished with taper inner wall.
Preferably, A, B side flange bottom of large thin-wall workpiece described in step 1 and step 3 be at least evenly equipped with 3 groups it is contour
Block, A, B side flange top are equipped with lever pressing plate.
Preferably, A, B side flange end face and outer circle bounce require to be less than 0.01mm.
Preferably, A, B side flange end face made allowance are 4-10mm.
Preferably, the machined parameters in step 2 and step 4 when inner wall of the vehicle large thin-wall workpiece with taper are as follows: the amount of feeding:
0.20-0.35mm, revolving speed: 20-30r/min, bite: 0.20-0.30mm.
Preferably, burnishing parameters are as follows: the amount of feeding: 1.5-2.5mm, lathe revolving speed: 20-30r/min, polishing machine revolving speed:
2000-3000r/min, amount of compression: 0.05mm-0.50mm.
Preferably, when vehicle end face of flange surplus, from large thin-wall inner hole of workpiece side vehicle outward.
The invention has the beneficial effect that
1. the present invention inhibits vibration to generate to avoid processing from vibrating, in conjunction with the clump weight for capableing of damping, while adjusting turning
Parameter reasonably adjusts the relationship of cutting depth and the speed of mainshaft, realizes thin-walled heavy caliber, bore changes greatly pocket machining,
Make dimension deviation control within 0.02mm.
2. it is rationally with burnishing parameters complementary using Cutting parameters, not only increase processing efficiency, it is ensured that processing quality,
By the control of large thin-wall inner hole of workpiece roughness within 0.8 μm.
3. the present invention not only facilitates its formation using surplus and Zhi Tai among flange end and large thin-wall inside workpiece
Reference measurement, while also improving the intensity of process workpieces processing.
4. the mode of both ends processing avoids influence of the too long caused cutter vibration of knife bar to processing.
5. being supportted using isometry block to workpiece pad, pressing device is corresponding with isometry block, and anti-clamping deformation ensure that position is accurate
Degree.
6. when vehicle end face of flange surplus, from large thin-wall inner hole of workpiece side vehicle outward, avoid vehicle it is complete after remain burr, protect
It has demonstrate,proved and has remained with wedge angle at large thin-wall workpiece flange aperture.
Detailed description of the invention
Fig. 1 is a kind of machining sketch chart of large thin-wall workpiece one end Vehicle Processing；
Fig. 2 is a kind of machining sketch chart of large thin-wall workpiece one end inner wall polishing；
Fig. 3 is a kind of machining sketch chart of large thin-wall workpiece other end Vehicle Processing；
Fig. 4 is a kind of machining sketch chart of large thin-wall workpiece other end inner wall polishing.
In figure: 1- isometry block, 2- support rod, 3- lever pressing plate, 4- clump weight, 5- lengthen lathe tool, 6- special glazing machine, 7-
The final datum level of B side flange, 8-B side flange end face surplus, the straight platform of 9-, the final datum level of 10-A side flange, 11-A side flange end
Face surplus, 12-A side flange, 13-B side flange.
Specific embodiment
In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the drawings.
A kind of processing method of large thin-wall workpiece, comprising the following steps:
Step 1: it is using the A side flange 12 of large thin-wall workpiece that workpiece is fixed on the table, as shown in Figure 1, this reality
12 bottom of A side flange for applying the medium-and-large-sized thin-wall workpiece of example is evenly equipped with 4 groups of isometry blocks 1 and lever pressing plate 3, sets among lever pressing plate 3
There is support rod 2, workpiece pad is supportted using isometry block 1, lever pressing plate 3 is corresponding with isometry block 1, using leverage workpiece pressing,
Anti- clamping deformation, ensure that position accuracy, and it is commonly fixed which can also be used pressing tongs or magnetic force pressing device etc.
The device of flange, is not described in detail here；
Step 2: vehicle large thin-wall workpiece inner wall, large thin-wall inside workpiece middle position vehicle are straight platform 9, straight 9 top of platform
Vehicle is the inner wall with taper, at this time optimal Cutting parameters when inner wall in vehicle with taper are as follows: the amount of feeding, and: 0.20-0.35mm turns
Speed: 20-30r/min, bite: 0.20-0.30mm, the processing can guarantee that inner wall roughness reaches within 1.6 μm；
Step 3: by large thin-wall workpiece turning, as shown in figure 3, identical mode utilizes large thin-wall workpiece with step 1
B side flange 13 workpiece is fixed on the table；
Step 4: vehicle large thin-wall workpiece inner wall, large thin-wall inside workpiece vehicle be the inner wall with taper, and in step 4
Inner wall is overlapped, and cutting parameter and final result in the process is identical as step 4；
The present invention before step 2, using 13 end face of lathe tool Vehicle Processing B side flange and made allowance is lengthened, preferably makes the side B method
Blue 13 end face made allowances are 4-10mm, while determining the final datum level 7 of B side flange, to determine the start bit of the inner wall with taper
It sets, when vehicle large thin-wall workpiece inner wall, Che Weizhi between the final datum level 7 of large thin-wall workpiece B side flange and 13 end face of B side flange
Platform 9, after step 2, vehicle goes B side flange end face surplus 8, guarantees final 7 position of datum level of B side flange, while controlling B side flange
13 surface roughness are that wedge angle is remained at 13 aperture of large thin-wall workpiece B side flange within 3.2, and this programme is to avoid vehicle complete
After remain burr, when vehicle B side flange end face surplus 8, from large thin-wall inner hole of workpiece side vehicle outward；
Before step 4, using lengthening 12 end face of lathe tool Vehicle Processing A side flange and made allowance, the surplus and B side flange 13
End face made allowance is identical, determines the final datum level 10 of A side flange, to determine the initial position of the inner wall with taper；Then vehicle is big
Type thin-wall workpiece inner wall, vehicle is straight platform 9, step between the final datum level 10 of large thin-wall workpiece A side flange and 12 end face of A side flange
After 4, vehicle goes A side flange end face surplus 11, guarantees final 10 position of datum level of A side flange, the requirement and 13 end face of B side flange
Processing request is identical.
After step 1, clump weight 4 is fixed on workbench according to theoretical calculation numerical value in advance and balances large thin-wall up
Structure on workpiece lateral wall leaves and takes 13 end face of machining allowance test run B side flange and large thin-wall excircle of workpiece, is surveyed by playing table
The jitter values of outer circle and 13 end face of B side flange are measured, clump weight 4 is adjusted；In step 3, machining allowance test run A side flange 12 is left and taken
End face and large thin-wall excircle of workpiece measure the bounce of outer circle by playing table, adjust clump weight 4.Two steps require end face of flange
It is less than 0.01mm range with outer circle bounce.
After step 2 and step 4, switch special glazing machine 6, as shown in Fig. 2, adjustment polished silicon wafer angle and inner wall taper
Match, step 2 and step 4 is polished with taper inner wall, at this time the optimal burnishing parameters in the inner wall of sand belt taper are as follows: feeding
Amount: 1.5-2.5mm, lathe revolving speed: 20-30r/min, polishing machine revolving speed: 2000-3000r/min, amount of compression: 0.05mm-
0.50mm, the processing can guarantee that inner wall roughness reaches within 0.8 μm；
End face of flange straight 9 structure of platform in the two sides A, B in above-mentioned processing method not only facilitates it to form reference measurement, simultaneously also
The intensity for improving process workpieces processing ensure that final large thin-wall workpiece both ends and inside bore deviation are less than 0.02mm；
It is rationally complementary with burnishing parameters using Cutting parameters simultaneously, not only increase processing efficiency, it is ensured that processing quality, it will be large-scale
Thin-wall workpiece inner hole roughness controls within 0.8 μm.
It should be appreciated that the purposes of these embodiments is merely to illustrate the present invention and is not intended to limit protection model of the invention
It encloses.In addition, it should also be understood that, after reading the technical contents of the present invention, those skilled in the art can be the present invention respectively
Kind change, modification and/or variation, all these equivalent forms equally fall within guarantor defined by the application the appended claims
Within the scope of shield.
Claims (10)
1. a kind of processing method of large thin-wall workpiece, which comprises the following steps:
Step 1: using the A side flange of large thin-wall workpiece that workpiece is fixed on the table；
Step 2: vehicle large thin-wall workpiece inner wall, large thin-wall inside workpiece middle position vehicle are straight platform, are bored above straight platform for band
The inner wall of degree；
Step 3: by large thin-wall workpiece turning, with step 1, identical mode utilizes the B side flange of large thin-wall workpiece by workpiece
It fixes on the table；
Step 4: vehicle large thin-wall workpiece inner wall, large thin-wall inside workpiece vehicle be the inner wall with taper, and with inner wall in step 2
It is overlapped.
2. a kind of processing method of large thin-wall workpiece according to claim 1, it is characterised in that: before step 2, Che Jia
Work B side flange end face and made allowance, determine the final datum level of B side flange, when vehicle large thin-wall workpiece inner wall, large thin-wall workpiece
Vehicle is straight platform between the final datum level of B side flange and B side flange end face, and after step 2, vehicle goes B side flange end face surplus, guarantees B
The final datum-plane position of side flange；
Preferably, before step 4, Vehicle Processing A side flange end face and made allowance determine the final datum level of A side flange；Vehicle is large-scale
Thin-wall workpiece inner wall, vehicle is straight platform between the final datum level of large thin-wall workpiece A side flange and A side flange end face, after step 4,
Vehicle goes A side flange end face surplus, guarantees the final datum-plane position of A side flange；
Preferably, the end face of flange for lengthening the lathe tool processing side A and/or B is utilized.
3. a kind of processing method of large thin-wall workpiece according to claim 1, it is characterised in that: after step 1, press
It according to reason discusses evaluation and clump weight is fixed on to the structure that workbench gets on balance large thin-wall workpiece lateral wall in advance, leave and take
Machining allowance test run B side flange end face and large thin-wall excircle of workpiece measure the jitter values of outer circle and B side flange end face, adjustment
Clump weight；
In step 3, machining allowance test run A side flange end face and large thin-wall excircle of workpiece are left and taken, the bounce of outer circle is measured, is adjusted
Whole clump weight.
4. a kind of processing method of large thin-wall workpiece according to claim 1, it is characterised in that: step 2 and step 4 it
Afterwards, switch special glazing machine, adjustment polished silicon wafer angle is matched with inner wall taper, is polished to step 2 and step 4 with taper inner wall.
5. a kind of processing method of large thin-wall workpiece according to claim 1, it is characterised in that: in step 1 and step 3
A, B side flange bottom of the large thin-wall workpiece are at least evenly equipped with 3 groups of isometry blocks, and A, B side flange top is equipped with lever
Pressing plate.
6. a kind of processing method of large thin-wall workpiece according to claim 3, it is characterised in that: A, B side flange end face
It requires to be less than 0.01mm with outer circle bounce.
7. a kind of processing method of large thin-wall workpiece according to claim 2, it is characterised in that: A, B side flange end face
Made allowance is 4-10mm.
8. a kind of processing method of large thin-wall workpiece according to claim 1, it is characterised in that: in step 2 and step 4
Machined parameters when inner wall of the vehicle large thin-wall workpiece with taper are as follows: the amount of feeding: 0.20-0.35mm, revolving speed: 20-30r/min,
Bite: 0.20-0.30mm.
9. a kind of processing method of large thin-wall workpiece according to claim 4, it is characterised in that: burnishing parameters are as follows: into
To amount: 1.5-2.5mm, lathe revolving speed: 20-30r/min, polishing machine revolving speed: 2000-3000r/min, amount of compression: 0.05mm-
0.50mm。
10. a kind of processing method of large thin-wall workpiece according to claim 2, it is characterised in that: more than vehicle end face of flange
When amount, from large thin-wall inner hole of workpiece side vehicle outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910025792.0A CN109732283B (en) | 2019-01-11 | 2019-01-11 | Machining method of large thin-wall workpiece |
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| CN201910025792.0A CN109732283B (en) | 2019-01-11 | 2019-01-11 | Machining method of large thin-wall workpiece |
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| CN109732283B CN109732283B (en) | 2021-04-30 |
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| CN110253228A (en) * | 2019-07-09 | 2019-09-20 | 南京高精船用设备有限公司 | A kind of large-scale combined thin-wall box body accuracy of manufacture ensuring method |
| CN114178875A (en) * | 2020-09-14 | 2022-03-15 | 香港城市大学深圳研究院 | Machining tool, turning and milling equipment and turning and milling method for aeroengine swirler |
| CN114682815A (en) * | 2022-04-24 | 2022-07-01 | 苏州市华盛源机电有限公司 | Large hollow cylinder casing end cover hole drilling system and drilling method |
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| CN114682815A (en) * | 2022-04-24 | 2022-07-01 | 苏州市华盛源机电有限公司 | Large hollow cylinder casing end cover hole drilling system and drilling method |
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| CN109732283B (en) | 2021-04-30 |
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Effective date of registration: 20220523 Address after: 276800 99 Rizhao Road, Rizhao Economic and Technological Development Zone, Rizhao City, Shandong Patentee after: SHANDONG HAOMAI HEAVY INDUSTRY Co.,Ltd. Address before: 261500 Haomai Industrial Park, 5655 Kangcheng street, Gaomi Economic Development Zone, Weifang City, Shandong Province Patentee before: HIMILE MECHANICAL MANUFACTURING Co.,Ltd. |