CN110340413A - A kind of process for the dividing bush decomposing large aperture interference fit - Google Patents
A kind of process for the dividing bush decomposing large aperture interference fit Download PDFInfo
- Publication number
- CN110340413A CN110340413A CN201910501228.1A CN201910501228A CN110340413A CN 110340413 A CN110340413 A CN 110340413A CN 201910501228 A CN201910501228 A CN 201910501228A CN 110340413 A CN110340413 A CN 110340413A
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- China
- Prior art keywords
- milling
- dividing bush
- flange
- inner hole
- default
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
-
- 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
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adjustment And Processing Of Grains (AREA)
Abstract
The invention belongs to Automatic manual transmission technologies, are related to a kind of process of the dividing bush of decomposition large aperture interference fit.This method comprises: being overlapped the centre of gyration of Central of the parts and milling machine by parts fixation on milling machine；Part includes rotating ring and the dividing bush that is mounted in rotating ring；It requires according to default flange by dividing bush flange part thickness milling to the first preset thickness；It requires according to default inner hole by dividing bush inner hole wall thickness milling to the second preset thickness；When bushing is cracked or local crowning, lower part is dismantled from milling machine；Inner hole radial direction along dividing bush touches dividing bush flange position, so that dividing bush is voluntarily fallen off with rotating ring generation local gap by deforming.This method solves the problems, such as to decompose not injuring part ontology during bushing.
Description
Technical field
The invention belongs to Automatic manual transmission technologies, are related to a kind of technique of the dividing bush of decomposition large aperture interference fit
Method.
Background technique
Instrument its main rotary body of inclining certainly of domestic common type is cyclic structure, and centre carries out transmitting load by big bearing
Lotus needs installation interval bushing to reduce abrasion, extends the service life between big bearing and mating parts.Part as shown in Figure 1, part
Including dividing bush and rotating ring, wherein dividing bush changes according to the size from the instrument that inclines, and is interference fit with rotating ring,
Bushing aperture can reach φ 600 or so, and magnitude of interference is up to 0.60mm or so.It is assembled when the bushing assembles using temperature differential method,
But temperature differential method can not make to generate Instantaneous Void between Thermo between bushing and part to carry out decomposition replacement when decomposing.
The technological difficulties faced are:
1, bushing and part how to be made to generate Instantaneous Void between Thermo；
2, how will during decomposing bushing not injuring part ontology.
Summary of the invention
The purpose of the present invention is: the present invention provides a kind of technique sides of the dividing bush of decomposition large aperture interference fit
Method solves the problems, such as to decompose not injuring part ontology during bushing.
The technical scheme is that
The present invention provides a kind of process of the dividing bush of decomposition large aperture interference fit, comprising:
By parts fixation on milling machine, it is overlapped the centre of gyration of Central of the parts and milling machine；Part includes rotating ring and peace
Dividing bush in rotating ring；
It requires according to default flange by dividing bush flange part thickness milling to the first preset thickness；
It requires according to default inner hole by dividing bush inner hole wall thickness milling to the second preset thickness；
When bushing is cracked or local crowning, lower part is dismantled from milling machine；
Along dividing bush inner hole radial direction touch dividing bush flange position so that dividing bush by deform with
Rotating ring generates local gap and voluntarily falls off.
Further, default flange requires to include:
The flange milling area of part is greater than or equal to the default accounting of the flange area of part；
Milling area is uniformly distributed in circumferencial direction；
Flange milling area and flange milling region quantity are determined by the size and rigid situation of actual interval bushing；
Further, default inner hole requires to include:
Inner hole milling region and flange milling area coincidence；
Wall thickness allowance can adjust according to the state of dividing bush during actual processing, and each inner hole milling region mills in turn
It cuts, forbids the direct milling in inner hole milling region to final size.
Further, by parts fixation on milling machine, it is overlapped the centre of gyration of Central of the parts and milling machine, comprising:
Levelling dividing bush end face, centering part on milling machine.
Further, in milling process, the first preset thickness and the second preset thickness subtract according to dividing bush deformation state
Increase.
Further, the first preset thickness is 0.1mm.
Further, the second preset thickness is 0.1mm.
Further, default accounting is 20%.
Further, the tool of tapping is wooden stick or the soft stick of plastics.
The invention has the advantages that the present invention provides a kind of sides of the decomposition replacement of the dividing bush of large aperture interference fit
Method can reduce dividing bush thickness, to reduce detail rigidity, deformed by dividing bush and reduce magnitude of interference, until generating
Gap.
Detailed description of the invention
Fig. 1 is the schematic diagram of part；
Fig. 2 is a kind of process of the method for the decomposition replacement of the dividing bush of large aperture interference fit provided by the invention
Figure；
Fig. 3 is the schematic diagram in milling region provided by the invention；
Fig. 4 is the schematic diagram that tapping dividing bush flange position provided by the invention taps direction.
Specific embodiment
The present invention is described in further details below.
As shown in Fig. 2, the present invention provides a kind of method of the decomposition replacement of the dividing bush of large aperture interference fit, packet
It includes:
Step 101, by parts fixation on milling machine, make the centre of gyration of Central of the parts and milling machine be overlapped；Part includes rotation
Change and the dividing bush being mounted in rotating ring.
Step 102 is required according to default flange by dividing bush flange part thickness milling to the first preset thickness.
Step 103 is required according to default inner hole by dividing bush inner hole wall thickness milling to the second preset thickness.
Step 104, when bushing is cracked or local crowning, lower part is dismantled from milling machine.
Step 105, along dividing bush inner hole radial direction touch dividing bush flange position so that dividing bush by
Deformation generates local gap with rotating ring and voluntarily falls off.
Further, default flange requires to include:
Concrete operation step includes:
1) by parts fixation on milling machine, levelling dividing bush end face, centering part makes rotating ring center and centre of gyration weight
It closes.
2) by dividing bush flange part thickness milling to 0.10mm: to reduce risk, without adding to entire plane
Work, but flange milling area cannot be less than the 20% of flange area, and flange milling area needs to be evenly distributed in circumferencial direction, according to
The size of actual interval bushing and rigid situation, can suitably increase flange milling area and flange milling region quantity.
3) by bushing inner hole wall thickness milling to 0.1mm: inner hole milling region should be with flange milling area coincidence, practical milling
Wall thickness allowance can adjust according to the deformation state of dividing bush in the process, and each milling region needs milling in turn, it can not be one
Milling region is machined directly into final size, prevents dividing bush deformation from causing all directions wall unevenness even or local bushing pine
It is dynamic, reduce processing risk and difficulty of processing.
As shown in figure 3, machining area is flange milling region or inner hole milling region.
4) in practical milling process according to dividing bush deformation state changeable flange thickness and dividing bush inner hole wall thickness,
When moderate finite deformation occurs in dividing bush, clamping tooling is removed after local crowning.
5) dividing bush flange region is touched along inner hole radial direction with wooden stick as shown in Figure 4, dividing bush is because of deformation
Local gap is generated with part, can voluntarily be fallen off.
It can be in the case where not injuring part ontology by large aperture, larger magnitude of interference through the method for the present invention through actual verification
Dividing bush decomposition disassemble, the part size after disassembly is not any change, and can be pacified again according to drawing requirement again
Fill dividing bush.
Claims (9)
1. a kind of process for the dividing bush for decomposing large aperture interference fit characterized by comprising
By parts fixation on milling machine, it is overlapped the centre of gyration of Central of the parts and milling machine；Part includes rotating ring and is mounted on
Dividing bush in rotating ring；
It requires according to default flange by dividing bush flange part thickness milling to the first preset thickness；
It requires according to default inner hole by dividing bush inner hole wall thickness milling to the second preset thickness；
When bushing is cracked or local crowning, lower part is dismantled from milling machine；
Along dividing bush inner hole radial direction touch dividing bush flange position so that dividing bush by deform with rotation
Ring generates local gap and voluntarily falls off.
2. the method according to claim 1, wherein default flange requires to include:
The flange milling area of part is greater than or equal to the default accounting of the flange area of part；
Milling area is uniformly distributed in circumferencial direction；
Flange milling area and flange milling region quantity are determined by the size and rigid situation of actual interval bushing.
3. according to the method described in claim 2, it is characterized in that, default inner hole requires to include:
Inner hole milling region and flange milling area coincidence；
Wall thickness allowance, and the milling in turn of each inner hole milling region can adjust according to the state of dividing bush during actual processing,
Forbid the direct milling in inner hole milling region to final size.
4. the method according to claim 1, wherein making Central of the parts and milling machine by parts fixation on milling machine
The centre of gyration be overlapped, comprising:
Levelling dividing bush end face, centering part on milling machine.
5. according to the method described in claim 3, it is characterized in that, the first preset thickness and second presets thickness in milling process
Degree subtracts increasing according to dividing bush deformation state.
6. according to the method described in claim 2, it is characterized in that, the first preset thickness is 0.1mm.
7. according to the method described in claim 3, it is characterized in that, the second preset thickness is 0.1mm.
8. according to the method described in claim 2, it is characterized in that, default accounting is 20%.
9. the method according to claim 1, wherein the tool of tapping is wooden stick or the soft stick of plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910501228.1A CN110340413A (en) | 2019-06-11 | 2019-06-11 | A kind of process for the dividing bush decomposing large aperture interference fit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910501228.1A CN110340413A (en) | 2019-06-11 | 2019-06-11 | A kind of process for the dividing bush decomposing large aperture interference fit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110340413A true CN110340413A (en) | 2019-10-18 |
Family
ID=68181774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910501228.1A Pending CN110340413A (en) | 2019-06-11 | 2019-06-11 | A kind of process for the dividing bush decomposing large aperture interference fit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110340413A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB614940A (en) * | 1946-05-14 | 1948-12-30 | Fairey Aviat Co Ltd | Improvements in or relating to the location and assembly of mechanical components |
| JPS5494694A (en) * | 1978-01-11 | 1979-07-26 | Hitachi Ltd | Lead wire bush |
| CN201040371Y (en) * | 2007-06-13 | 2008-03-26 | 江西铜业集团公司 | Special-purpose tool for dismounting cone crusher body lining |
| CN103273257A (en) * | 2013-05-30 | 2013-09-04 | 山西航空发动机维修有限责任公司 | Outer lining disassembling method |
| CN106607676A (en) * | 2015-10-27 | 2017-05-03 | 成都飞机工业（集团）有限责任公司 | Disassembly method of butt joint linings |
| CN109318174A (en) * | 2018-12-07 | 2019-02-12 | 中国航发南方工业有限公司 | Decompose fixture and decomposition method |
-
2019
- 2019-06-11 CN CN201910501228.1A patent/CN110340413A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB614940A (en) * | 1946-05-14 | 1948-12-30 | Fairey Aviat Co Ltd | Improvements in or relating to the location and assembly of mechanical components |
| JPS5494694A (en) * | 1978-01-11 | 1979-07-26 | Hitachi Ltd | Lead wire bush |
| CN201040371Y (en) * | 2007-06-13 | 2008-03-26 | 江西铜业集团公司 | Special-purpose tool for dismounting cone crusher body lining |
| CN103273257A (en) * | 2013-05-30 | 2013-09-04 | 山西航空发动机维修有限责任公司 | Outer lining disassembling method |
| CN106607676A (en) * | 2015-10-27 | 2017-05-03 | 成都飞机工业（集团）有限责任公司 | Disassembly method of butt joint linings |
| CN109318174A (en) * | 2018-12-07 | 2019-02-12 | 中国航发南方工业有限公司 | Decompose fixture and decomposition method |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191018 |