CN104930065B - The small stress assembling structure of two-way positioning and its assembly method - Google Patents
The small stress assembling structure of two-way positioning and its assembly method Download PDFInfo
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- CN104930065B CN104930065B CN201510211693.3A CN201510211693A CN104930065B CN 104930065 B CN104930065 B CN 104930065B CN 201510211693 A CN201510211693 A CN 201510211693A CN 104930065 B CN104930065 B CN 104930065B
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- axle sleeve
- retaining
- axis
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Abstract
A kind of small stress assembling structure of two-way positioning, including axis and axle sleeve, the position of both cooperation are located at the retaining step and positioning step at both ends, and axis and axle sleeve are cooperated using non-circular, curve magnitude of interference, such as the cooperation of standard ellipse curve magnitude of interference.The assembly magnitude of interference of axis and axle sleeve is assemble diameter 0.2~0.3 ‰, retaining groove and positioning groove are respectively provided on axle sleeve, cooperate respectively with retaining step and positioning step, the diameter of retaining step is 1.0025 times for assembling diameter (long axis), fit-up gap amount between retaining step and retaining groove is 0.2~0.3 ‰, the length of retaining step is the 10% of axle sleeve length of fit, and length is 1.04 times of retaining length of bench.The present invention two-way can position, and prevent axis from moving to axial with set；And erection stress is small, shear stress is gentle, has prevented axis and the opposite sliding of set；Maintainability, stability after assembling is greatly improved.
Description
Technical field
The invention belongs to Machine Designs to assemble field, specifically design a kind of small stress assembling structure of two-way positioning and its assembly
Method.
Background technique
In the prior art, the axle sleeve assembly method of transmitting large torque is mostly big interference calorimetric dress.Its operating method include with
Lower step：
1, select positive circular curve for fitting curves first, magnitude of interference selects between 0.9~the 1.2 ‰ of diameter；
2, shaft diameter and tolerance, the diameter of set and tolerance then are determined by International tolerance standard；
3, axis and set are finished again；
4, set is heated to 280 DEG C or so, and held for some time.Set is operated after taking out by assemble sequence.
There are problems for existing assembly method：
1, when selection magnitude of interference is big, erection stress is also big, and set is easily cracked；Select magnitude of interference hour, erection stress
It is small, it covers easily and the opposite sliding of set axis or play occurs；
2, the method limits the application of some materials.Such as the material that toughness is poor, easily occur entire crack or axis after assembly
Set relative movement.
3, when running after assembling, reliability and stability are poor.
Therefore, how to solve the problems, such as various existing for prior art bottom bracket axle assembly method, propose that a kind of erection stress is small,
The technical issues of all very high assembling structure of reliability and stability and its assembly method are known as prior art urgent need to resolve.
Summary of the invention
It is an object of the invention to propose a kind of small stress assembling structure of two-way positioning and its assembly method, answered with reducing
Power is concentrated, and erection stress is greatly lowered, operation stability, reliability after improving assembly, and roller set disassembly is simple.
For this purpose, the present invention uses following technical scheme：
A kind of small stress assembling structure of two-way positioning, including axis and axle sleeve, wherein the position of the axis and axle sleeve cooperation is wrapped
The retaining step and positioning step for being located at both ends are included, wherein retaining step and the axle sleeve cooperate, and the axis and axle sleeve are adopted
Cooperated with non-circular, curve magnitude of interference.
Preferably, the axis and the axle sleeve are the cooperation of slight interference amount.
Preferably, the assembly magnitude of interference of the axis and the axle sleeve is the 0.2 of the assembly diameter of the axis and the axle sleeve
~0.3 ‰, the diameter length of the longest part for the non-circular, curve that assembly diameter, that is, axis and axle sleeve cooperate, i.e., long axis direction is straight
Electrical path length.
Preferably, retaining groove and positioning groove are respectively provided on the axle sleeve, respectively with retaining step and positioning table
Rank cooperation, to limit between axis and axle sleeve in longitudinally opposite movement.
Preferably, the retaining groove and the retaining step are circle, the two clearance fit.
Preferably, the diameter of the retaining step is 1.0025 times for assembling diameter, the retaining step and the retaining
Fit-up gap amount between groove is 0.2~0.3 ‰.
Preferably, the length of the retaining step is the 10% of axle sleeve length of fit, and the length of the retaining groove is institute
1.04 times for stating retaining length of bench.
Preferably, the axis and the non-circular, curve of axle sleeve cooperation are standard ellipse curve.
The invention also discloses a kind of assembly methods using the above-mentioned small stress assembling structure of two-way positioning, including：
(1) axis and the axle sleeve fitting curves form are determined according to transmitting torque：Choose non-circular assembly curve；
(2) foundation reference for assembling is determining and calculates magnitude of interference：It is chosen in 0.2~0.3 ‰ ranges of assembly diameter any
Numerical value calculates separately the processing dimension of shaft and axle sleeve by International tolerance standard as calculating magnitude of interference, and the assembly diameter is
The diameter length of the longest part of non-circular, curve；
(3) retaining stepped diameters and the length on axis are determined：Retaining step is circle, and diameter is 1.0025 times of diameter of assembly
Control, the length of retaining step are the 10% of axle sleeve length of fit；
(4) diameter and length in inner hole of shaft sleeve with the retaining groove of retaining step cooperation are determined：The retaining groove is
The gap value of circle, the retaining groove and retaining step is 0.2~0.3 ‰, and the length of the retaining groove is retaining step
1.04 times of length；
(5) processing axis and set：It is processed by all data of calculating, guarantees machining accuracy to requirement；
(6) it assembles：The axle sleeve is heated to 280 DEG C or so, and held for some time, the axis is fast by assembly direction
Speed insertion axle sleeve, to complete to assemble each other.
Preferably, the fitting curves are standard ellipse curve.
Therefore, the present invention two-way can position, and prevent axis from moving to axial with set；And erection stress is small, shearing
Stress is gentle, has prevented axis and the opposite sliding of set；Maintainability, stability after assembling is greatly improved.
Detailed description of the invention
Fig. 1 is longitudinal view of the two-way small stress assembling structure of positioning according to the present invention；
Fig. 2 is the axial view of the two-way small stress assembling structure of positioning according to the present invention.
The technical characteristic in appended drawing reference the respectively referred to generation in figure is：
1, axis；2, axle sleeve；3, retaining step；4, retaining groove；5, positioning step；6, positioning groove；7, turn with diameter.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Referring to Fig. 1, the longitudinal view and Fig. 2 of the small stress assembling structure of two-way positioning according to the present invention are shown, is shown
The axial view of the small stress assembling structure of two-way positioning according to the present invention is gone out.
A kind of small stress assembling structure of two-way positioning, including axis 1 and axle sleeve 2, wherein the portion that the axis 1 and axle sleeve 2 cooperate
Position includes that the retaining step 3 and positioning step 5 for being located at both ends, wherein retaining step 3 and the axle sleeve 2 cooperate, the axis 1
Cooperated with axle sleeve 2 using non-circular, curve magnitude of interference.
Therefore, referring to fig. 2, since axis 1 and the mutually matched part of axle sleeve 2 are non-circular, curve, it is determined that the two is in axis
To relative position, both prevent the relative rotation in section axial direction, can only cooperate according to determining orientation.Meanwhile retaining
Step 3 and the axle sleeve 2 cooperate, and prevent axis 1 and axle sleeve 2 in longitudinally opposite movement.Since the axis 1 cooperates with axle sleeve 2
Position include the retaining step 3 and positioning step 5 for being located at both ends so that can neither advance between axle sleeve and axis, also not
It can step back, that is, prevent axis and axle sleeve in longitudinally opposite movement.
It is further preferred that the axis and the non-circular, curve of axle sleeve cooperation are standard ellipse curve.
It is further preferred that the axis 1 and the cooperation of axle sleeve slight interference amount, so that axle sleeve holds when avoiding erection stress excessive
It is easily cracked.
It is further preferred that be respectively provided with retaining groove 4 and positioning groove 6 on the axle sleeve, respectively with retaining step 3
Cooperate with positioning step 5, to limit between axis and axle sleeve in longitudinally opposite movement.
Wherein, the retaining groove 4 and 3 clearance fit of retaining step.
Wherein, the assembly magnitude of interference of axis and axle sleeve is 0.2~the 0.3 ‰ of the assembly diameter 7 of axis and axle sleeve, assembles diameter 7
That is the diameter length of the longest part of axis and the non-circular, curve of axle sleeve cooperation.When the non-circular, curve is that standard ellipse is bent
Line, the assembly diameter are the long axis of the standard ellipse curve.
It is further preferred that the retaining step and the retaining groove are circle, the diameter of the retaining step is
1.0025 times for assembling diameter, the fit-up gap amount between the retaining step and the retaining groove is 0.2~0.3 ‰.
The length of the retaining step is the 10% of axle sleeve length of fit, and the length of the retaining groove is the stopping-receding bench
1.04 times of rank length.
Meanwhile the invention also discloses a kind of assembly methods to the above-mentioned small stress assembling structure of two-way positioning, including：
(1) axis and the axle sleeve fitting curves form are determined according to transmitting torque：Non-circular assembly curve is chosen, preferably
For standard ellipse curve.
(2) foundation reference for assembling is determining and calculates magnitude of interference：It is chosen in 0.2~0.3 ‰ ranges of assembly diameter any
Numerical value calculates separately the processing dimension of shaft and axle sleeve by International tolerance standard as calculating magnitude of interference, and the assembly diameter is
The diameter length of the longest part of non-circular, curve；
(3) retaining stepped diameters and the length on axis are determined：Retaining step is circle, and diameter is 1.0025 times of diameter of assembly
Control, the length of retaining step are the 10% of axle sleeve length of fit；
(4) diameter and length in inner hole of shaft sleeve with the retaining groove of retaining step cooperation are determined：The retaining groove is
The gap value of circle, the retaining groove and retaining step is 0.2~0.3 ‰, and the length of the retaining groove is retaining step
1.04 times of length；
(5) processing axis and set：It is processed by all data of calculating, guarantees machining accuracy to requirement；
(6) it assembles：The axle sleeve is heated to 280 DEG C or so, and held for some time, the axis is fast by assembly direction
Speed insertion axle sleeve, to complete to assemble each other.
A specific embodiment is shown as follows.
Embodiment 1：
(1) fitting curves form is determined according to transmitting torque：Preferably standard ellipse curve.Transverse be 1003mm,
Short axle is 1000mm；
(2) foundation reference for assembling is determining and calculates magnitude of interference：Magnitude of interference is 0.25mm, and the cross section curve of axis is also that standard is ellipse
Circular curve, the margin of tolerance：0~+0.05, the cross section curve of axle sleeve is the same as the standard ellipse curve in step 1, the margin of tolerance：-0.05
~0；
(3) retaining stepped diameters and the length on axis are determined.Retaining stepped diameters are the long axle offset 1.2mm of elliptic curve,
That is 1004.2mm, the length of retaining step are 100mm；
(4) diameter and length in inner hole of shaft sleeve with the retaining groove of retaining step cooperation are determined.Wherein, retaining groove
Diameter is 1004.5mm, length 104mm；
(5) axis and axle sleeve are processed：Above-mentioned precision size processing axis and axle sleeve are utilized using numerically-controlled machine tool；
(6) it assembles：Axle sleeve is heated to 280 DEG C or so, and keeps the temperature 6 hours.It is laid flat after taking out set, axis is pressed into assembly direction
And oval relative engagement direction, axle sleeve is quickly penetrated, assembly is completed.
Pass through the embodiment, it is clear that in the present invention, non-circular, curve in other words the longest diameter of standard ellipse curve and
Most short diameter should not difference it is excessive so that after the heating, the retaining step of axis can be by axle sleeve, so as to what is both realized
Installation.
Therefore, the small stress assembling structure of two-way positioning of the invention and assembly method have the following advantages that：
1, two-way positioning, prevents axis from moving to axial with set；
2, erection stress is small, and shear stress is gentle, has prevented axis and the opposite sliding of set；
3, maintainability, stability after assembling is greatly improved.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
A specific embodiment of the invention is only limitted to this, for those of ordinary skill in the art to which the present invention belongs, is not taking off
Under the premise of from present inventive concept, several simple deduction or replace can also be made, all shall be regarded as belonging to the present invention by institute
Claims of submission determine protection scope.
Claims (4)
1. a kind of small stress assembling structure of two-way positioning, including axis (1) and axle sleeve (2), wherein the axis (1) is matched with axle sleeve (2)
The position of conjunction includes the retaining step (3) and positioning step (5) for being located at both ends, and it is recessed to be respectively provided with retaining on the axle sleeve
Slot (4) and positioning groove (6), the retaining step (3) and retaining groove (4) cooperate, the positioning step (5) and the positioning
Groove (6) cooperation uses non-circular song in longitudinally opposite movement, the axis (1) and axle sleeve (2) between axis and axle sleeve to limit
The cooperation of line magnitude of interference, the retaining groove (4) and the retaining step (3) are circle, the two clearance fit；
The diameter of the retaining step is 1.0025 times for assembling diameter, the dress between the retaining step and the retaining groove
It is 0.2~0.3 ‰ with gap value, the diameter of the longest part for the non-circular, curve that assembly diameter (7) i.e. axis cooperates with axle sleeve is long
Degree；
The length of the retaining step is the 10% of axle sleeve length of fit, and the length of the retaining groove is that the retaining step is long
1.04 times of degree；
The axis (1) and the axle sleeve (2) are the cooperation of slight interference amount；
The assembly magnitude of interference of the axis (1) and the axle sleeve (2) is the assembly diameter (7) of the axis (1) and the axle sleeve (2)
0.2~0.3 ‰.
2. the small stress assembling structure of two-way positioning according to claim 1, it is characterised in that：
The axis and the non-circular, curve of axle sleeve cooperation are standard ellipse curve.
3. a kind of assembly method using the small stress assembling structure of two-way positioning described in as claimed in claim 1 or 22, including：
(1) axis and the axle sleeve fitting curves form are determined according to transmitting torque：Choose non-circular assembly curve；
(2) foundation reference for assembling is determining and calculates magnitude of interference：Any number is chosen in 0.2~0.3 ‰ ranges of assembly diameter
As magnitude of interference is calculated, by International tolerance standard, the processing dimension of shaft and axle sleeve is calculated separately, the assembly diameter is non-circular
The diameter length of the longest part of shape curve；
(3) retaining stepped diameters and the length on axis are determined：Retaining step is circle, and diameter is 1.0025 times for assembling diameter,
The length of retaining step is the 10% of axle sleeve length of fit；
(4) diameter and length in inner hole of shaft sleeve with the retaining groove of retaining step cooperation are determined：The retaining groove is circle,
The gap value of the retaining groove and retaining step is 0.2~0.3 ‰, and the length of the retaining groove is retaining length of bench
1.04 again；
(5) processing axis and set：It is processed by all data of calculating, guarantees machining accuracy to requirement；
(6) it assembles：The axle sleeve is heated to 280 DEG C or so, and held for some time, the axis is quickly inserted by assembly direction
Enter axle sleeve, to complete to assemble each other.
4. assembly method according to claim 3, it is characterised in that：
The fitting curves are standard ellipse curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510211693.3A CN104930065B (en) | 2015-04-29 | 2015-04-29 | The small stress assembling structure of two-way positioning and its assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510211693.3A CN104930065B (en) | 2015-04-29 | 2015-04-29 | The small stress assembling structure of two-way positioning and its assembly method |
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| Publication Number | Publication Date |
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| CN104930065A CN104930065A (en) | 2015-09-23 |
| CN104930065B true CN104930065B (en) | 2018-11-23 |
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| CN201510211693.3A Expired - Fee Related CN104930065B (en) | 2015-04-29 | 2015-04-29 | The small stress assembling structure of two-way positioning and its assembly method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109623260B (en) * | 2018-11-13 | 2020-10-16 | 上海五钢设备工程有限公司 | Hot-charging method for stepped lock extrusion cylinder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1483549A (en) * | 2003-08-06 | 2004-03-24 | 佘国光 | Method for fixing end and cover-ring on smooth rod and products thereof |
| CN102865352A (en) * | 2012-09-24 | 2013-01-09 | 中国西电电气股份有限公司 | Axial positioning structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69611631T2 (en) * | 1995-05-01 | 2001-08-02 | Baldwin Graphic System Inc | Assembly mechanism for textile rolls for roller washing devices |
| CN202098125U (en) * | 2009-12-29 | 2012-01-04 | 精工爱普生株式会社 | Conveying roller and conveying unit as well as printer |
| CN102375378B (en) * | 2011-11-11 | 2013-05-15 | 珠海天威飞马打印耗材有限公司 | Developing roller |
| CN203651387U (en) * | 2013-11-19 | 2014-06-18 | 浙江吉利汽车研究院有限公司 | Stabilizer bar and bush assembly of automobile |
| CN203936192U (en) * | 2014-02-13 | 2014-11-12 | 太原科技大学 | A kind of roll of rolled metal corrugated plating |
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- 2015-04-29 CN CN201510211693.3A patent/CN104930065B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1483549A (en) * | 2003-08-06 | 2004-03-24 | 佘国光 | Method for fixing end and cover-ring on smooth rod and products thereof |
| CN102865352A (en) * | 2012-09-24 | 2013-01-09 | 中国西电电气股份有限公司 | Axial positioning structure |
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| CN104930065A (en) | 2015-09-23 |
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| CB03 | Change of inventor or designer information |
Inventor after: Wang Wenxiang Inventor before: Wang Wenxiang Inventor before: Liu Changzhao |
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Address after: 063000 south side of Changhong Road, North District of Tangshan City Road, Hebei Province Applicant after: Hebei Tai Ming Energy Group Co., Ltd. Address before: 063006 No. 185, Da Li Road, North Tangshan City Road, Hebei Applicant before: HEBEI TAIMING INVESTMENT GROUP CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181123 Termination date: 20190429 |
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