CN110253233A - A kind of processing technology for casing class part - Google Patents
A kind of processing technology for casing class part Download PDFInfo
- Publication number
- CN110253233A CN110253233A CN201910661393.3A CN201910661393A CN110253233A CN 110253233 A CN110253233 A CN 110253233A CN 201910661393 A CN201910661393 A CN 201910661393A CN 110253233 A CN110253233 A CN 110253233A
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- workpiece
- boss
- processing
- inner hole
- hole
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a kind of processing technologys for casing class part, comprising: S1, removes the surplus of blank so that blank to be processed as to the workpiece of circular ring shape, and reserves heat-treatment distortion amount at position to be processed；S2, boss and the processing blind hole on the outer end face of boss, and reserved welding deformation amount and allowance for finish are processed on the outer wall of workpiece；S3, the inner hole of workpiece is finished, to correct the wall thickness of workpiece and the circularity of inner hole.The present invention is by the way of the processing blind hole on boss, to can avoid interrupted cut when carrying out the finishing of inner hole, thus the processing efficiency greatly improved, in addition, processing blind hole has no effect on the subsequent finishing to the hole on boss, therefore, while not influencing subsequent manufacturing procedure, greatly improve the finishing efficiency for inner hole, and due to avoiding interrupted cut, it is greatly improved the qualification rate of processing, meets the design requirement of drawing.
Description
Technical field
The present invention relates to lathe process technology fields, more specifically to a kind of adding for casing class part
Work technique.
Background technique
With the expansion of two machine key special subjects, aero-engine also adds plane during constantly researching and developing new machine
More stringent requirements are proposed for work technique.
In the process of the casing class part of the various welding of aero-engine, for example, combustion box, interior casing,
Hot end casing etc., by taking combustion box as an example, the blank material of combustion box is annular shape, after surplus of going out, is needed
Boss and there are machining allowance at 25 processed on casing wall, then the inner hole of casing is finished, with guarantee wall thickness and
Inner hole circularity prevents component from misplacing in the welding process with object part.
In the prior art, it processes during the boss on casing wall, boss at 25 is all processed by through-hole, it should
Although process be from component design drawing angle without a doubt, and through-hole processing aspect it is relatively simple, only need to bore
Head drills through.But if if boss is all through-hole, that results in will appear 25 different degrees of bottoms on the inner hole of casing
Finishing combustion chamber is given then will lead to the interrupted cut of large area during finishing below for inner hole in hole
The inner hole of casing leading portion will cause very big problem, when processing inner hole due to interrupted cut, forge a knife serious, then casing wall thickness
And inner hole circularity requires to be difficult to reach design drawing requirement, and will also result in very big puzzlement to operator, when needing operator
Moment, which carves to guard to look in lathe, examines the damaged degree of blade, and such processing efficiency will be very low very low.
Therefore, casing class part processing difficulties how to be solved the problems, such as, are that current those skilled in the art are urgently to be resolved
Problem.
Summary of the invention
In view of this, can avoid discontinuously cutting the object of the present invention is to provide a kind of processing technology for casing class part
It cuts, improves processing efficiency and product qualification rate, meet the design requirement of drawing.
To achieve the goals above, the invention provides the following technical scheme:
A kind of processing technology for casing class part, comprising:
S1, the surplus of blank is removed so that blank to be processed as to the workpiece of circular ring shape, and in the reserved heat treatment in position to be processed
Deflection；
S2, boss and the processing blind hole on the outer end face of the boss, and reserved weldering are processed on the outer wall of the workpiece
Connect deflection and allowance for finish；
S3, the inner hole of the workpiece is finished, to correct the wall thickness of the workpiece and the circularity of the inner hole.
Preferably, the S1 includes: the work for using the surplus of center lathe removal blank blank to be processed as to circular ring shape
Part, and heat-treatment distortion amount is reserved at position to be processed.
Preferably, the heat-treatment distortion amount with a thickness of 1.5 millimeters.
Preferably, the S2 includes: to process boss on the outer wall of the workpiece using numerically-controlled machine tool and in the boss
Outer end face on processing blind hole, and reserved welding deformation amount and allowance for finish.
Preferably, the welding deformation amount and allowance for finish are 3 millimeters.
Preferably, the S3 includes: to be finished using inner hole of the vertical lathe to the workpiece, to correct the work
The circularity of the wall thickness of part and the inner hole.
Preferably, the distance between inner wall of the bottom of the blind hole and the inner hole is 2 millimeters.
Processing technology provided by the present invention for casing class part carries out roughing to blank first, with removal
Then surplus processes boss, and convex to obtain the workpiece of circular ring shape and be reserved with heat-treatment distortion amount on the outer wall of workpiece
The outer end face processing blind hole of platform, and reserved welding deformation amount and allowance for finish, finally again finish the inner hole of workpiece,
The mode of through-hole is processed directly on boss compared with the prior art, the present invention uses the processing blind hole on boss, thus brings
Benefit be: processing blind hole will not generate bottom outlet on the inner wall of inner hole, to can avoid disconnected when carrying out the finishing of inner hole
Continuous cutting, thus the processing efficiency greatly improved, in addition, processing blind hole has no effect on the subsequent finishing to the hole on boss
Therefore work while not influencing subsequent manufacturing procedure, greatly improves the finishing efficiency for inner hole, and due to
Interrupted cut is avoided, the qualification rate of processing is greatly improved, meets the design requirement of drawing.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the flow chart of the processing technology specific embodiment provided by the present invention for casing class part；
Fig. 2 is the drawing schematic diagram for processing combustion box leading portion in the prior art；
Fig. 3 is the enlarged drawing of part A in Fig. 2；
Fig. 4 is the drawing schematic diagram of processing combustion box leading portion provided by the present invention；
Fig. 5 is the enlarged drawing of part B in Fig. 4.
Wherein, 1- boss, 2- through-hole, 3- blind hole.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Core of the invention is to provide a kind of processing technology for casing class part, can avoid interrupted cut, improves and adds
Work efficiency rate and product qualification rate meet the design requirement of drawing.
Fig. 1 to Fig. 5 is please referred to, Fig. 1 is the processing technology specific embodiment provided by the present invention for casing class part
Flow chart；Fig. 2 is the drawing schematic diagram for processing combustion box leading portion in the prior art；Fig. 3 is the enlarged drawing of part A in Fig. 2；
Fig. 4 is the drawing schematic diagram of processing combustion box leading portion provided by the present invention；Fig. 5 is the enlarged drawing of part B in Fig. 4.
A kind of processing technology for casing class part provided by the present invention characterized by comprising step S1, go
Blank is processed as to the workpiece of circular ring shape except the surplus of blank, and reserves heat-treatment distortion amount at position to be processed；Step S2,
Boss 1 is processed on the outer wall of workpiece and reserves welding deformation amount and allowance for finish；Step S3, on the outer end face of boss 1
Processing blind hole 3；Step S4, the inner hole of workpiece is modified, to correct the wall thickness of workpiece and the circularity of inner hole.
It should be noted that processing technology provided by the present invention can be used for the casing of the various welding in aero-engine
Class part, such as combustion box, interior casing, hot end casing etc., for convenience of description, by taking the leading portion of combustion box as an example,
The material of combustion box leading portion is GH4169, and maximum gauge is 494 millimeters, and minimum casing wall thickness is 2.0 millimeters, belongs to thin-walled
Casing, blank are forging.
Ring shape blank part is selected, in order to be processed into the workpiece of circular ring shape, it is necessary first to remove the surplus of blank, material
The surplus of removal is about 90%, and reserves heat-treatment distortion amount at position to be processed, to facilitate following process；Then in workpiece
Boss 1 at 25 is processed on outer wall and there are machining allowance, and the processing blind hole 3 on the outer end face of boss 1, needs to illustrate
Be, herein 25 at boss 1 it is identical as the processing technology of the prior art, be according to drawing normal process, the difference lies in that existing
Technology processes through-hole 2 on boss 1, and the present invention is the processing blind hole 3 on boss 1.Finally, the inner hole to workpiece carries out finishing
Work, to guarantee the wall thickness of workpiece and the circularity of inner hole, it is preferred that the wall thickness of workpiece is 2.0 millimeters, and the circularity of inner hole is 0.2 milli
Rice.
Processing technology provided by the present invention for casing class part carries out roughing to blank first, with removal
Then surplus processes boss 1 to obtain the workpiece of circular ring shape and be reserved with heat-treatment distortion amount on the outer wall of workpiece, and convex
The outer end face processing blind hole 3 of platform 1, and reserved welding deformation amount and allowance for finish, finally carry out finishing to the inner hole of workpiece again
Work processes the mode of through-hole 2 directly on boss 1 compared with the prior art, and the present invention uses the processing blind hole 3 on boss 1, by
This has the advantage that: processing blind hole 3 will not generate bottom outlet on the inner wall of inner hole, thus when carrying out the finishing of inner hole,
Can avoid interrupted cut, thus the processing efficiency greatly improved, in addition, processing blind hole 3 have no effect on it is subsequent on boss 1
Therefore the finishing in hole while not influencing subsequent manufacturing procedure, greatly improves the finishing work efficiency for inner hole
Rate, and due to avoiding interrupted cut, it is greatly improved the qualification rate of processing, meets the design requirement of drawing.
Therefore, the present invention fundamentally solves the problems, such as casing wall interrupted cut, improve part processing efficiency and
Qualification rate；And manipulation strength is reduced, does not need at every moment to observe blade abrasion situation；One-piece parts are rigid after components welding
Property can be very significantly improved；The process-cycle is shortened, the cost of charp tool is saved.
On the basis of above-described embodiment, step S1 includes: to use the surplus of center lathe removal blank with by blank
It is processed as the workpiece of circular ring shape, and reserves heat-treatment distortion amount at position to be processed.Preferably, using the blank of circular ring shape,
Since center lathe can carry out working procedures processing to the multiple types workpiece such as axis, disk, ring, and it is usually used in the inside and outside of workpieces processing
Therefore rotary surface and end face etc. can be processed easily the blank to circular ring shape, quickly to remove defeathering using machine tool
The surplus of base obtains satisfactory annular workpiece.In view of the specific value of reserved heat-treatment distortion amount, it is preferred that
Reserved heat-treatment distortion amount with a thickness of 1.5 millimeters.
On the basis of above-described embodiment, step S2 includes: to process boss 1 on the outer wall of workpiece using numerically-controlled machine tool
And the processing blind hole 3 on the outer end face of boss 1, and reserved welding deformation amount and allowance for finish.Due to needing in circular ring shape work
Process 25 boss 1 according to drawing on the outer wall of part, therefore, using numerically-controlled machine tool, shape and size by drawing into
Row programming, can automatically process the blind hole 3 on 25 boss 1 and boss 1, to improve processing efficiency.In view of weldering
Connect the specific setting of deflection and allowance for finish, it is preferred that welding deformation amount is 3 millimeters with allowance for finish.
On the basis of above-described embodiment, step S3 includes: to be modified using inner hole of the vertical lathe to workpiece, with
Correct the wall thickness of workpiece and the circularity of inner hole.Since the main shaft of vertical lathe is vertical, and workbench is in a horizontal position, because
This, the centering of workpiece and clamping are more convenient, and the gravity of workpiece and workbench is born by bed ways or thrust bearing, main shaft
Bending is not generated.Therefore, vertical lathe is highly suitable for correcting the wall thickness of workpiece and the circularity of inner hole in the present invention.
On the basis of above-mentioned any embodiment, it is contemplated that it is subsequent during carrying out components welding and processing, also
It needs the internal diameter to blind hole 3 to expand, and gets through blind hole 3 for through-hole 2 during 3 internal diameter of blind hole is widened, it is therefore, blind
The reserved bottom thickness in hole 3 should not be too large, with guarantee it is subsequent can smoothly get through blind hole 3, certainly, the reserved bottom of blind hole 3
Thickness is also unsuitable too small, and to guarantee to carry out in finishing passes in the inner hole to workpiece, blind hole 3 will not be punched, to guarantee
The continuity of cutting, it is preferred that the distance between the bottom of blind hole 3 and the inner wall of inner hole are 2 millimeters.
In addition, practice result shows the processing technology provided by the present invention for casing class part, combustion chamber can be made
The process-cycle of casing leading portion shortens 5 days, and size qualification rate reaches 100%, which significantly improves single-piece
Qualification rate, reduce the labor intensity of operator, shorten the process-cycle of casing class part.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The processing technology provided by the present invention for casing class part is described in detail above.It is used herein
A specific example illustrates the principle and implementation of the invention, and the above embodiments are only used to help understand
Method and its core concept of the invention.It should be pointed out that for those skilled in the art, not departing from this
, can be with several improvements and modifications are made to the present invention under the premise of inventive principle, these improvement and modification also fall into the present invention
In scope of protection of the claims.
Claims (7)
1. a kind of processing technology for casing class part characterized by comprising
S1, the surplus of blank is removed so that blank to be processed as to the workpiece of circular ring shape, and reserve heat-treatment distortion at position to be processed
Amount；
S2, boss (1) and processing blind hole (3) on the outer end face of the boss (1) are processed on the outer wall of the workpiece, and pre-
Stay welding deformation amount and allowance for finish；
S3, the inner hole of the workpiece is finished, to correct the wall thickness of the workpiece and the circularity of the inner hole.
2. the processing technology according to claim 1 for casing class part, which is characterized in that the S1 includes: use
The surplus of center lathe removal blank reserves heat-treatment distortion at position to be processed so that blank to be processed as to the workpiece of circular ring shape
Amount.
3. the processing technology according to claim 2 for casing class part, which is characterized in that the heat-treatment distortion amount
With a thickness of 1.5 millimeters.
4. the processing technology according to claim 1 for casing class part, which is characterized in that the S2 includes: use
Numerically-controlled machine tool processes boss (1) and processing blind hole (3) on the outer end face of the boss (1) on the outer wall of the workpiece, and
Reserved welding deformation amount and allowance for finish.
5. the processing technology according to claim 4 for casing class part, which is characterized in that the welding deformation amount with
Allowance for finish is 3 millimeters.
6. the processing technology according to claim 1 for casing class part, which is characterized in that the S3 includes: use
Vertical lathe finishes the inner hole of the workpiece, to correct the wall thickness of the workpiece and the circularity of the inner hole.
7. the processing technology according to any one of claims 1 to 6 for casing class part, which is characterized in that described blind
The distance between the bottom in hole (3) and the inner wall of the inner hole are 2 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910661393.3A CN110253233A (en) | 2019-07-22 | 2019-07-22 | A kind of processing technology for casing class part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910661393.3A CN110253233A (en) | 2019-07-22 | 2019-07-22 | A kind of processing technology for casing class part |
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| CN110253233A true CN110253233A (en) | 2019-09-20 |
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| CN201910661393.3A Pending CN110253233A (en) | 2019-07-22 | 2019-07-22 | A kind of processing technology for casing class part |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110497162A (en) * | 2019-09-23 | 2019-11-26 | 无锡航亚科技股份有限公司 | A kind of processing method of aero-engine casing |
| CN114012362A (en) * | 2021-11-10 | 2022-02-08 | 湖北三江航天红阳机电有限公司 | Thin-wall shell and machining method thereof |
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| CN104014991A (en) * | 2014-05-23 | 2014-09-03 | 陕西法士特齿轮有限责任公司 | Method for machining thin-wall intermediate ring |
| CN104476123A (en) * | 2014-11-13 | 2015-04-01 | 中国南方航空工业(集团)有限公司 | Machining method of engine case |
| CN108262591A (en) * | 2017-01-04 | 2018-07-10 | 东北林业大学 | A kind of five shaft vertical turning-milling complex processing method of aero-engine casing |
| CN109551178A (en) * | 2018-11-28 | 2019-04-02 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of control method of Split Casing machining deformation |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202798252U (en) * | 2012-07-23 | 2013-03-13 | 闽东东明电机制造有限公司 | Motor casing capable of changing direction |
| US20140033734A1 (en) * | 2012-08-06 | 2014-02-06 | Eugene Lockhart | Stator anti-rotation lug |
| CN102794610A (en) * | 2012-08-24 | 2012-11-28 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for processing thin wall welder cases of revolving body structures |
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| CN104476123A (en) * | 2014-11-13 | 2015-04-01 | 中国南方航空工业(集团)有限公司 | Machining method of engine case |
| CN108262591A (en) * | 2017-01-04 | 2018-07-10 | 东北林业大学 | A kind of five shaft vertical turning-milling complex processing method of aero-engine casing |
| CN109551178A (en) * | 2018-11-28 | 2019-04-02 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of control method of Split Casing machining deformation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110497162A (en) * | 2019-09-23 | 2019-11-26 | 无锡航亚科技股份有限公司 | A kind of processing method of aero-engine casing |
| CN114012362A (en) * | 2021-11-10 | 2022-02-08 | 湖北三江航天红阳机电有限公司 | Thin-wall shell and machining method thereof |
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Application publication date: 20190920 |
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