CN107855730B - Multistage hollow shaft interconnection method - Google Patents
Multistage hollow shaft interconnection method Download PDFInfo
- Publication number
- CN107855730B CN107855730B CN201710861095.XA CN201710861095A CN107855730B CN 107855730 B CN107855730 B CN 107855730B CN 201710861095 A CN201710861095 A CN 201710861095A CN 107855730 B CN107855730 B CN 107855730B
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- Prior art keywords
- axis
- cooperation
- segment
- sections
- shaft end
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Classifications
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The present invention provides a kind of multistage hollow shaft interconnection methods, comprising the following steps: an axis is divided into three sections and processed by step 1, the interception of three sections of axis is divided according to service performance, first segment is that rotation becomes cooperation shaft end, and second segment is power output shaft end, and third section is that iron core cooperates shaft end；15mm cooperation inner stopper is reserved inside axis one end, other end axis outer diameter stretches out cooperation male half coupling, and dimensional tolerance is using H7/s7 cooperation, and shrink-on is matched when installation；Step 2, every section of axis distinguish rough turn completion, position interference fit hot charging using seam allowance and smear high strength structural adhesion resistant to high temperature in matching part, guarantee the binding force of axis and axis, then after the completion of three sections of axis hot chargings, then carry out finishing and grinding process.The present invention substantially mitigates the weight of axis, and processing can be with multistage turning, and multistage axis 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 interconnection methods, and in particular, to a kind of multistage hollow shaft interconnection method.
Background technique
New-energy automobile industry is to the requirement of vehicle driving motor at present: 1) compact-sized, size is small；2) light-weight, to subtract
The total quality of light car；3) high reliablity, failure mode are controllable；4) power density is high；5) at low cost；As driving motor core
Heart part turns shaft design and manufactures just be improved, and motor shaft mostly uses a kind of solid shafting of material at present, processing
It is convenient, but quality is larger and same material easily causes waste.
The length of axis is longer, and needing piece diameter of blanking is that the bar knife of 55mm cuts 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 ratio is heavier.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of multistage hollow shaft interconnection methods, by axis
Weight substantially mitigate, processing can be with multistage turning, and multistage axis material can use different material groups by properties of product requirement
It closes, greatly reduces weight and cost.
According to an aspect of the present invention, a kind of multistage hollow shaft interconnection method is provided, which is characterized in that including following step
It is rapid:
A piece axis is divided into three sections and processed by step 1, and the interception of three sections of axis is divided according to service performance, and first segment is
Rotation becomes cooperation shaft end, and second segment is power output shaft end, and third section is that iron core cooperates shaft end；It is reserved inside axis one end in 15mm cooperation only
Mouthful, other end axis outer diameter stretches out cooperation male half coupling, and dimensional tolerance is using H7/s7 cooperation, and shrink-on is matched when installation；
Step 2, every section of axis distinguish rough turn completion, position interference fit hot charging using seam allowance and smear in matching part resistance to
The high strength structural adhesion of high temperature guarantees the binding force of axis and axis, then after the completion of three sections of axis hot chargings, then is finished and be ground
Technique.
Preferably, the material of the second segment is 20CrMnTi type low carbon carburizing steel.
Preferably, the first segment and third section all use 40Cr fashioned iron.
Compared with prior art, the present invention have it is following the utility model has the advantages that the present invention can significantly reduce axis weight and
Three material axis material are docked using different materials and are used, and cost also declines to a great extent.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the working principle diagram of multistage hollow shaft interconnection method of the present invention.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
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 scope.
As shown in Figure 1, when larger present invention is mainly used for driving motor length dimension, in order to avoid weight brought by axis
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, is able to bear larger
Moment of face.In identical moment of face, select hollow shaft than solid shafting material saving.This stress distribution from circular section
It can also be seen that when maximum shear stress on solid shafting circumference is close to permitting stress, middle section shear stress also with it is allowable
Shear stress falls far short, and intermediate material does not give full play to its effect largely, so in order to reduce the weight and improving antitorque energy
Length dimension motor solid shafting bigger than normal need to be optimized for hollow shaft by power, but when length dimension is longer, and hollow shaft difficulty of processing increases
Add, in order to solve difficulty of processing, therefore this axis is divided into three sections and is processed.
Multistage hollow shaft interconnection method of the present invention the following steps are included:
A piece axis is divided into three sections and processed by step 1, and the interception of three sections of axis is divided according to service performance, first segment 1
Become cooperation shaft end for rotation, second segment 2 is power output shaft end, and third section 3 is that iron core cooperates shaft end；15mm cooperation is reserved inside axis one end
Inner stopper, other end axis outer diameter stretch out cooperation male half coupling, and dimensional tolerance is using H7/s7 cooperation, and shrink-on is matched when installation.
Step 2, every section of axis distinguish rough turn completion, position interference fit hot charging using seam allowance and smear in matching part resistance to
The high strength structural adhesion of high temperature guarantees the binding force of axis and axis, then after the completion of three sections of axis hot chargings, then is finished and be ground
Technique.
The material 20CrMnTi type low carbon carburizing steel of second segment.It is mostly used it on automobile and manufactures transmission gear, is middle through hardening
CrMnTi fashioned iron in property carburizing steel, harden ability is higher, when guaranteeing through hardening, intensity and toughness with higher, especially
It is low-temperature impact toughness with higher, weldability is medium, and machinability is good after normalizing.First segment and third Duan Jun do not go out
Power, all using 40Cr fashioned iron, this material is one of most popular steel of machinery manufacturing industry, is had after modifier treatment good
Comprehensive mechanical property, good low-temperature impact toughness and low notch sensitivity.The harden ability of steel is good, when water quenching can through hardening arrive
28~60mm of Ф, when oil quenching can through hardening to 15~40mm of Ф.This steel is further adapted at cyaniding and high-frequency quenching in addition to modifier treatment
Reason.Cutting ability is preferable, and when hardness is HB174~229, opposite machinability is 60%.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to 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 substantive content of the invention.
Claims (1)
1. a kind of multistage hollow shaft interconnection method, which comprises the following steps:
A piece axis is divided into three sections and processed by step 1, and the interception of three sections of axis is divided according to service performance, and first segment is that rotation becomes
Cooperate shaft end, second segment is power output shaft end, and third section is that iron core cooperates shaft end；15mm cooperation inner stopper is reserved inside axis one end,
Other end axis outer diameter stretches out cooperation male half coupling, and dimensional tolerance is using H7/s7 cooperation, and shrink-on is matched when installation；
Step 2, every section of axis distinguish rough turn completion, position interference fit hot charging using seam allowance and smear high temperature resistant in matching part
High strength structural adhesion, guarantee axis and axis binding force, then after the completion of three sections of axis hot chargings, then finished and be ground work
Skill；The material of the second segment is 20CrMnTi type low carbon carburizing steel；The first segment and third section all use 40Cr fashioned iron.
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 CN107855730A (en) | 2018-03-30 |
| CN107855730B true CN107855730B (en) | 2019-10-22 |
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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 method for producing same |
| 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 method for producing same |
| 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 |
|---|---|
| CN107855730A (en) | 2018-03-30 |
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Effective date of registration: 20210610 Granted publication date: 20191022 |