CN108127341A - A kind of processing technology of precision support bushing class part - Google Patents
A kind of processing technology of precision support bushing class part Download PDFInfo
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- CN108127341A CN108127341A CN201711302555.1A CN201711302555A CN108127341A CN 108127341 A CN108127341 A CN 108127341A CN 201711302555 A CN201711302555 A CN 201711302555A CN 108127341 A CN108127341 A CN 108127341A
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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 processing technology of accurate support bushing class part, according to the general character on bearing insert class design of part, sort out its processing method, it devises such parts machining process regulation, made the tooling for being suitble to such part processing, processing efficiency, processing quality, yield rate can be effectively improved, elevating mechanism manufacturing enterprise is horizontal to the digital control processing of jewel cover parts.The present invention can make machinery manufacturing industry obtain global optimization with the Computerized Numerical Control processing technology of jewel cover parts for aviation machine mechanism, so as to improve processing efficiency, processing quality and the yield rate of all kinds of jewel cover parts, there is wide application value.
Description
Technical field
The invention belongs to technical fields of mechanical processing, are related to a kind of processing technology of accurate support bushing class part.
Background technology
Jewel cover parts are often used in aeronautic structure component, mainly for accurate axis in aerospace component
It is that the installation of part is used cooperatively, with gap at bearing fit generally within 0.005mm, diametric(al) dimensional tolerance up and down
Range is within 0.01mm；Cylindricity, concentricity, bearing mounting surface verticality, bushing mounting surface verticality essence inside and outside bushing
Degree is all at 5~6 grades；Bushing wall thickness is relatively thin simultaneously, and structure is thin, so accurate part, often adds on precise NC lathe
Work, since part wall thickness is relatively thin, clamping force is often larger, is easy for causing part deformation, while secondary clamping holds in clamping
It is larger to easily cause repetitive error.Therefore such part generally have the characteristics that poor rigidity, yielding, precision it is difficult to ensure that.
Invention content
Technical problems to be solved
In order to avoid the shortcomings of the prior art, the present invention proposes a kind of processing technology of accurate support bushing class part
Method according to the general character on bearing insert class design of part, sorts out its processing method, design such parts machining process regulation,
The tooling for being suitble to such part processing is made, to effectively improve processing efficiency, processing quality, yield rate, elevating mechanism manufacture enterprise
Industry is horizontal to the digital control processing of jewel cover parts.
Technical solution
A kind of processing technology of precision support bushing class part, the processing step of processing are：Step 1 blanking；Step 2
It is rough turn；Step 3 is heat-treated；Step 4 numerical control lathe；Step 5 numerical control mill；Step 6 clamps；Step 7 is surface-treated；It is characterized in that：
The step 2 is rough turn：Position to there is Geometrical Tolerance Principle reserves allowance and reserves processing technology handle, rough turn
Processing；Each outer circle, endoporus and end face reserve allowance for finishing；
Step 4 numerical control lathe：The allowance that removal roughing is stayed, except technique handle：
If the radius-thickness ratio of bearing insert is less than 5, geometric tolerance is less than 6 class precisions, then minimum endoporus is to technique handle direction
Extend 7~10mm, Cutting process handle when facilitating smart car；
Technique handle length takes l2mm：Bearing insert outside diameter φ D are in≤90mm, technique handle length l2Value 30mm；
Bearing insert outside diameter φ D are in >=90mm, technique handle length l2Value 40mm；
If part outer circle, without size tolerance requirements, technique handle outer circle φ D are identical with part excircle dimension；
If there is size tolerance requirements, then technique handle outer circle φ D are bigger 1mm than part excircle dimension；
The technique pommel face is φ d2 with the requirement of bearing mounting hole axial reference A verticalities, for the requirement of 6 class precisions；Institute
It is φ d1 that technique handle outer circle, which is stated, with the requirement of bearing mounting hole axial reference A concentricities, for the requirement of 6 class precisions.
A kind of processing technology of precision support bushing class part, the processing step of processing are：Step 1 blanking；Step 2
It is rough turn；Step 3 is heat-treated；Step 4 numerical control lathe；Step 5 wire cutting；Step 6 numerical control mill；Step 7 clamps；Step 8 is surface-treated；Its
It is characterized in that：
Step 4 numerical control lathe：The allowance that removal roughing is stayed；
Step 5 wire cutting：The allowance that removal roughing is stayed, except technique handle：
If the radius-thickness ratio of bearing insert is more than or equal to 5, geometric tolerance is less than or equal to 6 class precisions, then in addition to minimum endoporus
Extend outside 7~10mm to technique handle direction, design an annular groove away from technique handle right side 5mm, diameter of ring groove is bearing insert
Outside diameter φ D-10, width 10mm；Wire cutting process is arranged after smart car, the use of annular groove is clamping face, flat clamp pressure holding is gone
Except technique handle；
Technique handle length takes l2mm：Bearing insert outside diameter φ D are in≤90mm, technique handle length l2Value 30mm；
Bearing insert outside diameter φ D are in >=90mm, technique handle length l2Value 40mm；
If part outer circle, without size tolerance requirements, technique handle outer circle φ D are identical with part excircle dimension；
If there is size tolerance requirements, then technique handle outer circle φ D are bigger 1mm than part excircle dimension；
The technique pommel face is φ d2 with the requirement of bearing mounting hole axial reference A verticalities, for the requirement of 6 class precisions；
The technique handle outer circle is φ d1 with the requirement of bearing mounting hole axial reference A concentricities, for the requirement of 6 class precisions.
Advantageous effect
The processing technology of a kind of accurate support bushing class part proposed by the present invention, according to jewel cover parts knot
General character on structure sorts out its processing method, devises such parts machining process regulation, has made suitable such part processing
Tooling can effectively improve processing efficiency, processing quality, yield rate, and elevating mechanism manufacturing enterprise is to jewel cover parts
Digital control processing is horizontal.
The present invention can be such that machinery manufacturing industry is obtained for aviation machine mechanism with the Computerized Numerical Control processing technology of jewel cover parts
To global optimization, so as to improve processing efficiency, processing quality and the yield rate of all kinds of jewel cover parts, have relatively wide
General application value.
Description of the drawings
Fig. 1：Precision bearing bushing class parts machining process handle indwelling schematic diagram
Fig. 2：Wire cutting removes precision bearing bushing class part process handle
1- bearing inserts；2- flat clamps；3- wire cutting technologies
Fig. 3：One of precision bearing bushing class parts machining process flow
Fig. 4：The two of precision bearing bushing class parts machining process flow
Specific embodiment
In conjunction with embodiment, attached drawing, the invention will be further described：
The technical scheme is that：For aviation machine mechanism bearing insert class accessory size, structure, geometric tolerance
It is required that 2 kinds of special process handles of design, by roughing indwelling technique handle, the mode of finishing or wire cutting removal technique handle,
Solve such part poor rigidity, yielding, precision it is difficult to ensure that processing problem.It is characterized in that, this method includes following step
Suddenly：It is as follows to design processing process：Material --- vehicle --- heat treatment --- numerical control lathe --- numerical control mill --- pincers --- surface treatment or
Person is material, and --- --- --- --- --- numerical control mill --- pincers --- is surface-treated numerical control lathe vehicle for wire cutting for heat treatment；
Rough turn process is that the position for having Geometrical Tolerance Principle reserves allowance, and reserves processing technology handle, for finishing
It uses, skill is：Each outer circle, endoporus and end face reserve allowance for finishing；2 kinds of removal technique handle schemes：1. such as
Fruit bearing insert thickness is thicker, and Geometrical Tolerance Principle is wider, then minimum endoporus extends l to technique handle direction1Long (l1Value 7~
10mm), facilitate and part length dimension is crossed by part left side during smart car, with lathe tool Cutting process handle；2. if bearing insert is thick
Spend relatively thin, geometric tolerance is stringent, then other than minimum endoporus extends l1 long to technique handle direction, still needs to design one away from technique handle
The annular groove (a diameter of bearing insert outside diameter φ D-10, width 10mm) of right side 5mm, smart car arrange wire cutting work later
Sequence, is clamping face using annular groove, and flat clamp pressure holding removes technique handle；Technique handle length takes l2Mm (bearing insert outside diameter φ
D is in≤90mm, technique handle length l2Value 30mm；Bearing insert outside diameter φ D are in >=90mm, technique handle length l2It takes
Value 40mm)；If part outer circle, without size tolerance requirements, technique handle outer circle φ D are identical with part excircle dimension；If there is ruler
Very little tolerance, then technique handle outer circle φ D are bigger 1mm than part excircle dimension；Technique pommel face and bearing mounting hole axial reference A
Verticality requirement is φ d2 (requirement of 6 class precisions), and technique handle outer circle is φ with the requirement of bearing mounting hole axial reference A concentricities
D1 (requirement of 6 class precisions).
It after roughing, is heat-treated, carries out size stabilization, the remnants that the removal roughing stage generates should
Power；
During finishing, clamping process handle, smart car has the position of Geometrical Tolerance Principle；
Technique handle is removed during smart car or arranges wire cutting removal technique handle；
After smart car, CNC milling machine point bores ream installation threaded hole；
Pincers worker process tapping, sharp edge is blunt, deburring；
Finally it is surface-treated.
Specific embodiment：
First according to for aviation machine mechanism bearing insert class accessory size, structure, Geometrical Tolerance Principle, design 2
Kind special process handle scheme：1. if bearing insert thickness is thicker, Geometrical Tolerance Principle is wider, then minimum endoporus is to technique handle side
To extension l1 long (7~10mm of l1 values), Cutting process handle when facilitating smart car, this technological process is as shown in Figure 3；If 2. axis
It is relatively thin to hold insert thickness, geometric tolerance is stringent, then other than minimum endoporus extends l1 long to technique handle direction, still needs to design one
Annular groove (a diameter of bearing insert outside diameter φ D-10, width 10mm) away from technique handle right side 5mm, smart car arrange later
Wire cutting process is clamping face using annular groove, and flat clamp pressure holding removes technique handle, this technological process is as shown in Figure 4.Use line
Patterning method removal technique handle method is as shown in Figure 2.
And the corresponding part process handle common feature of 2 kinds of technological processes is as shown in Figure 1：Technique handle length takes l2Mm (bearings
Excircle of bushing diameter phi D is in≤90mm, technique handle length l2Value 30mm；Bearing insert outside diameter φ D are in >=90mm
When, technique handle length l2Value 40mm)；If part outer circle is without size tolerance requirements, technique handle outer circle φ D and part outer circle
Size is identical；If there is size tolerance requirements, then technique handle outer circle φ D are bigger 1mm than part excircle dimension；Technique pommel face and axis
It is φ d2 (requirement of 6 class precisions), technique handle outer circle and bearing mounting hole axial reference to hold the requirement of mounting hole axial reference A verticalities
The requirement of A concentricities is φ d1 (requirement of 6 class precisions).
The present invention sorts out its processing method, devises such part and add according to the general character on bearing insert class design of part
Work technological procedure has made the tooling for being suitble to such part processing, can effectively improve processing efficiency, processing quality, yield rate,
Elevating mechanism manufacturing enterprise is horizontal to the digital control processing of jewel cover parts.
Claims (2)
1. a kind of processing technology of precision support bushing class part, the processing step of processing are：Step 1 blanking；Step 2 is thick
Vehicle；Step 3 is heat-treated；Step 4 numerical control lathe；Step 5 numerical control mill；Step 6 clamps；Step 7 is surface-treated；It is characterized in that：
The step 2 is rough turn：Position to there is Geometrical Tolerance Principle reserves allowance and reserves processing technology handle, rough turn to add
Work；Each outer circle, endoporus and end face reserve allowance for finishing；
Step 4 numerical control lathe：The allowance that removal roughing is stayed, except technique handle：
If the radius-thickness ratio of bearing insert is less than 5, geometric tolerance is less than 6 class precisions, then minimum endoporus extends 7 to technique handle direction
~10mm, Cutting process handle when facilitating smart car；
Technique handle length takes l2mm：Bearing insert outside diameter φ D are in≤90mm, technique handle length l2Value 30mm；Jewel
Outside diameter φ D are covered in >=90mm, technique handle length l2Value 40mm；
If part outer circle, without size tolerance requirements, technique handle outer circle φ D are identical with part excircle dimension；
If there is size tolerance requirements, then technique handle outer circle φ D are bigger 1mm than part excircle dimension；
The technique pommel face is φ d2 with the requirement of bearing mounting hole axial reference A verticalities, for the requirement of 6 class precisions；The work
Skill handle outer circle is φ d1 with the requirement of bearing mounting hole axial reference A concentricities, for the requirement of 6 class precisions.
2. a kind of processing technology of precision support bushing class part, the processing step of processing are：Step 1 blanking；Step 2 is thick
Vehicle；Step 3 is heat-treated；Step 4 numerical control lathe；Step 5 wire cutting；Step 6 numerical control mill；Step 7 clamps；Step 8 is surface-treated；It is special
Sign is：
Step 4 numerical control lathe：The allowance that removal roughing is stayed；
Step 5 wire cutting：The allowance that removal roughing is stayed, except technique handle：
If the radius-thickness ratio of bearing insert is more than or equal to 5, geometric tolerance is less than or equal to 6 class precisions, then in addition to minimum endoporus is to work
Skill handle direction extends outside 7~10mm, designs an annular groove away from technique handle right side 5mm, and diameter of ring groove is bearing insert outer circle
Diameter phi D-10, width 10mm；Wire cutting process is arranged after smart car, the use of annular groove is clamping face, flat clamp pressure holding removes work
Skill handle；
Technique handle length takes l2mm：Bearing insert outside diameter φ D are in≤90mm, technique handle length l2Value 30mm；Jewel
Outside diameter φ D are covered in >=90mm, technique handle length l2Value 40mm；
If part outer circle, without size tolerance requirements, technique handle outer circle φ D are identical with part excircle dimension；
If there is size tolerance requirements, then technique handle outer circle φ D are bigger 1mm than part excircle dimension；
The technique pommel face is φ d2 with the requirement of bearing mounting hole axial reference A verticalities, for the requirement of 6 class precisions；
The technique handle outer circle is φ d1 with the requirement of bearing mounting hole axial reference A concentricities, for the requirement of 6 class precisions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711302555.1A CN108127341B (en) | 2017-12-11 | 2017-12-11 | Processing method of precision supporting bush parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711302555.1A CN108127341B (en) | 2017-12-11 | 2017-12-11 | Processing method of precision supporting bush parts |
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| CN108127341A true CN108127341A (en) | 2018-06-08 |
| CN108127341B CN108127341B (en) | 2020-01-14 |
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| CN201711302555.1A Active CN108127341B (en) | 2017-12-11 | 2017-12-11 | Processing method of precision supporting bush parts |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109365933A (en) * | 2018-11-26 | 2019-02-22 | 盐城昱祺机械制造有限公司 | Wire cutting positioning fixture and forming technology for the forming of three pin shaft fork guide sleeves |
| CN112643293A (en) * | 2020-12-07 | 2021-04-13 | 北京星航机电装备有限公司 | Machining method for large-sized cylinder thin-wall cabin section part |
| CN114515842A (en) * | 2021-12-22 | 2022-05-20 | 陕西法士特齿轮有限责任公司 | Machining method of thin-wall gear ring with small width-diameter ratio |
| CN114934937A (en) * | 2022-05-19 | 2022-08-23 | 成都四威高科技产业园有限公司 | Mounting method of lifting lug bushing |
| CN115415751A (en) * | 2022-09-28 | 2022-12-02 | 苏州昊来顺精密制造有限公司 | Machining process of aviation locking part type part |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109365933A (en) * | 2018-11-26 | 2019-02-22 | 盐城昱祺机械制造有限公司 | Wire cutting positioning fixture and forming technology for the forming of three pin shaft fork guide sleeves |
| CN112643293A (en) * | 2020-12-07 | 2021-04-13 | 北京星航机电装备有限公司 | Machining method for large-sized cylinder thin-wall cabin section part |
| CN114515842A (en) * | 2021-12-22 | 2022-05-20 | 陕西法士特齿轮有限责任公司 | Machining method of thin-wall gear ring with small width-diameter ratio |
| CN114934937A (en) * | 2022-05-19 | 2022-08-23 | 成都四威高科技产业园有限公司 | Mounting method of lifting lug bushing |
| CN115415751A (en) * | 2022-09-28 | 2022-12-02 | 苏州昊来顺精密制造有限公司 | Machining process of aviation locking part type part |
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| CN108127341B (en) | 2020-01-14 |
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