CN107855730A - Multistage hollow shaft docking calculation - Google Patents
Multistage hollow shaft docking calculation Download PDFInfo
- Publication number
- CN107855730A CN107855730A CN201710861095.XA CN201710861095A CN107855730A CN 107855730 A CN107855730 A CN 107855730A CN 201710861095 A CN201710861095 A CN 201710861095A CN 107855730 A CN107855730 A CN 107855730A
- Authority
- CN
- China
- Prior art keywords
- axle
- sections
- coordinates
- hollow shaft
- multistage
- Prior art date
- 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.)
- Granted
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Classifications
-
- 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
-
- 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
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention provides a kind of multistage hollow shaft docking calculation, comprise the following steps：Step 1, an axle is divided into three sections and is processed, the interception of three sections of axles divides according to performance, and first paragraph becomes for rotation coordinates shaft end, and second segment is output shaft end, and the 3rd section is that iron core coordinates shaft end；15mm is reserved inside axle one end and coordinates inner stopper, other end axle external diameter, which stretches out, coordinates male half coupling, and dimensional tolerance is using H7/s7 cooperations, and shrink-on is matched somebody with somebody during installation；Step 2, every section of axle distinguish rough turn completion, position interference fit hot charging using seam and smear resistant to elevated temperatures high strength structural adhesion in matching part, ensure the adhesion of axle and axle, then after the completion of three sections of axle hot chargings, then are finished and grinding process.The present invention significantly mitigates the weight of axle, and processing can be with multistage turning, and multistage axle material can use different combinations of materials by properties of product requirement, greatly reduce weight and cost.
Description
Technical field
The present invention relates to a kind of docking calculation, in particular it relates to a kind of multistage hollow shaft docking calculation.
Background technology
New-energy automobile industry is to the requirement of vehicle motor at present：1) compact-sized, size is small；2) it is in light weight, to subtract
The total quality of light car；3) reliability is high, and failure mode is controllable；4) power density is high；5) cost is low；As motor core
Heart part turns shaft design and manufactured just be improved, and motor shaft uses a kind of solid shafting of material more at present, processing
It is convenient, but quality is larger and same material easily causes waste.
The length of axle is longer, needs piece a diameter of 55mm of blanking bar knife to cut each spot size of processing, waste of material compared with
Greatly, and material is low-carbon alloy steel, and Costco Wholesale is very high, and weight is heavier.
The content of the invention
For in the prior art the defects of, it is an object of the invention to provide a kind of multistage hollow shaft docking calculation, it is by axle
Weight significantly mitigate, processing can be with multistage turning, and multistage axle material can use different material groups by properties of product requirement
Close, greatly reduce weight and cost.
According to an aspect of the present invention, there is provided a kind of multistage hollow shaft docking calculation, it is characterised in that including following step
Suddenly：
Step 1, an axle is divided into three sections and is processed, the interception of three sections of axles divides according to performance, and first paragraph is
Rotation, which becomes, coordinates shaft end, and second segment is output shaft end, and the 3rd section is that iron core coordinates shaft end；15mm is reserved inside axle one end and coordinates interior stop
Mouthful, other end axle external diameter, which stretches out, coordinates male half coupling, and dimensional tolerance is using H7/s7 cooperations, and shrink-on is matched somebody with somebody during installation；
Step 2, every section of axle distinguish rough turn completion, position interference fit hot charging using seam and are smeared in matching part resistance to
The high strength structural adhesion of high temperature, ensure the adhesion of axle and axle, then after the completion of three sections of axle hot chargings, then finished and be ground
Technique.
Preferably, the material of the second segment is 20CrMnTi type low carbon carburizing steels.
Preferably, the first paragraph and the 3rd section are all using 40Cr shaped steel.
Compared with prior art, the present invention has following beneficial effect：The present invention can significantly reduce axle weight and
Three material axle material are used using different material docking, and cost also declines to a great extent.
Brief description of the drawings
The detailed description made by reading with reference to the following drawings to non-limiting example, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the fundamental diagram of multistage hollow shaft docking calculation of the present invention.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
As shown in figure 1, present invention is mainly used for motor length dimension it is larger when, in order to avoid weight caused by axle
Increase, and in the case where material is identical, sectional area is equal, hollow shaft is stronger than the anti-twisting property of solid shafting, can bear larger
Moment of face.In the case of identical moment of face, from hollow shaft than solid shafting material saving.This stress distribution from circular section
It can also be seen that when the maximum shear stress on solid shafting circumference is close to permitting stress, center section shear stress also with it is allowable
Shear stress falls far short, and middle material does not largely give full play to its effect, so for loss of weight and improving antitorque energy
Power, length dimension motor solid shafting bigger than normal need to be optimized for hollow shaft, but when length dimension is longer, hollow shaft difficulty of processing increases
Add, in order to solve difficulty of processing, therefore this axle is divided into three sections and is processed.
Multistage hollow shaft docking calculation of the present invention comprises the following steps：
Step 1, an axle is divided into three sections and is processed, the interception of three sections of axles divides according to performance, first paragraph 1
Become for rotation and coordinate shaft end, second segment 2 is output shaft end, and the 3rd section 3 is that iron core coordinates shaft end；15mm cooperations are reserved inside axle one end
Inner stopper, other end axle external diameter, which stretches out, coordinates male half coupling, and dimensional tolerance is using H7/s7 cooperations, and shrink-on is matched somebody with somebody during installation.
Step 2, every section of axle distinguish rough turn completion, position interference fit hot charging using seam and are smeared in matching part resistance to
The high strength structural adhesion of high temperature, ensure the adhesion of axle and axle, then after the completion of three sections of axle hot chargings, then finished and be ground
Technique.
The material 20CrMnTi type low carbon carburizing steels of second segment.It is used on automobile and manufactures travelling gear, is middle through hardening
CrMnTi shaped steel in property carburizing steel, its quenching degree is higher, in the case of through hardening is ensured, has higher intensity and toughness, especially
It is that there is higher low-temperature impact toughness, weldability is medium, and machinability is good after normalizing.First paragraph and the 3rd section do not go out
Power, all using 40Cr shaped steel, this material is one of most popular steel of machinery manufacturing industry, is had well after modifier treatment
Comprehensive mechanical property, good low-temperature impact toughness and low notch sensitivity.The quenching degree of steel is good, during water quenching can through hardening arrive
28~60mm of Ф, during oil quenching can through hardening to 15~40mm of Ф.This steel is further adapted in addition to modifier treatment at cyaniding and high-frequency quenching
Reason.Cutting ability is preferable, and when hardness is HB174~229, relative machinability is 60%.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (3)
1. a kind of multistage hollow shaft docking calculation, it is characterised in that comprise the following steps：
Step 1, an axle is divided into three sections and is processed, the interception of three sections of axles divides according to performance, and first paragraph becomes for rotation
Coordinate shaft end, second segment is output shaft end, and the 3rd section is that iron core coordinates shaft end；15mm is reserved inside axle one end and coordinates inner stopper,
Other end axle external diameter, which stretches out, coordinates male half coupling, and dimensional tolerance is using H7/s7 cooperations, and shrink-on is matched somebody with somebody during installation；
Step 2, every section of axle distinguish rough turn completion, position interference fit hot charging using seam and smear high temperature resistant in matching part
High strength structural adhesion, ensure the adhesion of axle and axle, then after the completion of three sections of axle hot chargings, then finished and be ground work
Skill.
2. multistage hollow shaft docking calculation according to claim 1, it is characterised in that the material of the second segment is
20CrMnTi type low carbon carburizing steels.
3. multistage hollow shaft docking calculation according to claim 1, it is characterised in that the first paragraph and the 3rd section of whole
Use 40Cr shaped steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710861095.XA CN107855730B (en) | 2017-09-21 | 2017-09-21 | Multistage hollow shaft interconnection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710861095.XA CN107855730B (en) | 2017-09-21 | 2017-09-21 | Multistage hollow shaft interconnection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107855730A true CN107855730A (en) | 2018-03-30 |
| CN107855730B CN107855730B (en) | 2019-10-22 |
Family
ID=61698295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710861095.XA Active CN107855730B (en) | 2017-09-21 | 2017-09-21 | Multistage hollow shaft interconnection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107855730B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002325573A1 (en) * | 2002-02-25 | 2003-09-09 | Dong Suh Control Co., Ltd. | Reducer using electric motor having a hollowed rotational shaft and electric motivated power steering system using the same |
| CN101263308A (en) * | 2005-09-13 | 2008-09-10 | 诺伊曼尔·泰克福尔控股有限公司 | Hollow shaft and manufacturing method thereof |
| CN203119640U (en) * | 2012-12-03 | 2013-08-07 | 南阳防爆集团股份有限公司 | Rotor three section shaft coupling structure |
| CN103341735A (en) * | 2013-07-09 | 2013-10-09 | 中联重科股份有限公司 | Hollow shaft and manufacturing method thereof |
| CN103527614A (en) * | 2013-10-25 | 2014-01-22 | 中电电机股份有限公司 | Connecting structure of three-section shaft used for large synchronous motor |
| CN105290714A (en) * | 2014-06-19 | 2016-02-03 | 沈阳创达技术交易市场有限公司 | Machining method for hollow shaft |
| CN105750844A (en) * | 2016-04-29 | 2016-07-13 | 沈阳透平机械股份有限公司 | Processing method for hollow spindle of compressor |
| CN205811772U (en) * | 2016-06-29 | 2016-12-14 | 成都中车电机有限公司 | A kind of hollow axle for high speed rotating |
-
2017
- 2017-09-21 CN CN201710861095.XA patent/CN107855730B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002325573A1 (en) * | 2002-02-25 | 2003-09-09 | Dong Suh Control Co., Ltd. | Reducer using electric motor having a hollowed rotational shaft and electric motivated power steering system using the same |
| CN101263308A (en) * | 2005-09-13 | 2008-09-10 | 诺伊曼尔·泰克福尔控股有限公司 | Hollow shaft and manufacturing method thereof |
| CN203119640U (en) * | 2012-12-03 | 2013-08-07 | 南阳防爆集团股份有限公司 | Rotor three section shaft coupling structure |
| CN103341735A (en) * | 2013-07-09 | 2013-10-09 | 中联重科股份有限公司 | Hollow shaft and manufacturing method thereof |
| CN103527614A (en) * | 2013-10-25 | 2014-01-22 | 中电电机股份有限公司 | Connecting structure of three-section shaft used for large synchronous motor |
| CN105290714A (en) * | 2014-06-19 | 2016-02-03 | 沈阳创达技术交易市场有限公司 | Machining method for hollow shaft |
| CN105750844A (en) * | 2016-04-29 | 2016-07-13 | 沈阳透平机械股份有限公司 | Processing method for hollow spindle of compressor |
| CN205811772U (en) * | 2016-06-29 | 2016-12-14 | 成都中车电机有限公司 | A kind of hollow axle for high speed rotating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107855730B (en) | 2019-10-22 |
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Effective date of registration: 20210610 Granted publication date: 20191022 |