CN110399659A - A kind of Design of length method for splined shaft of transferring - Google Patents
A kind of Design of length method for splined shaft of transferring Download PDFInfo
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- CN110399659A CN110399659A CN201910622485.0A CN201910622485A CN110399659A CN 110399659 A CN110399659 A CN 110399659A CN 201910622485 A CN201910622485 A CN 201910622485A CN 110399659 A CN110399659 A CN 110399659A
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- splined shaft
- length
- spline
- shaft
- design
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention belongs to axis technical fields, are related to a kind of Design of length method of splined shaft of transferring.The method includes the following steps: step 1, calculates the static strength of splined shaft；Step 2 provides initial length, calculates the vibration shape of splined shaft, obtains its intrinsic frequency f1；Step 3 calculates driving frequency f when splined shaft work according to splined shaft working speed2；Step 4 adjusts spline length, guarantees | f1‑f2|/f2> 20% obtains the maximum length L of splined shaft；The length of step 5, spline housing is N, and as L < N, spline shaft length takes L；As spline shaft length L > N, spline shaft length takes N*m, and wherein m takes 70-95%.Above-mentioned technical proposal provides a kind of Design of length method of splined shaft of transferring, maximum value is selected in the reasonable scope, the problems such as being adjusted spline to biggish beat amount by lesser deviation angle, solving the spline wear as caused by job insecurity, shoulder block end wear.
Description
Technical field
The invention belongs to axis technical fields, are related to a kind of Design of length method of splined shaft of transferring.
Background technique
Drive rod is one of important component in accessory drive system, belongs to axial workpiece, and all there is involute spline at both ends, is leaned on
Spline is connected to passing movement with power output, input shaft.To prevent drive rod play, in the end of drive rod, design has lock
There is anti-channeling retainer ring at locking structure or both ends.In the design of certain uni-drive gear box connection turbocharging pump drive chain, drive rod one end
Shoulder block is designed to prevent play, direction external splines gos deep into gear shaft internal messing passing movement.But since spline shaft length selects
Unreasonable, in actual use, at work due to turbocharging pump, stability is bad, influences on the swing of drive rod
It is larger, often there is be connected with the gear shaft inside and outside spline of one end of drive rod and polish, drive rod rib and gear shaft end face squeeze
The problem of deformation, this just needs periodically to replace the position detection of entire gear-box, and operating difficulties, cost increases.
Summary of the invention
Present invention solves the technical problem that: a kind of Design of length method of splined shaft of transferring is provided, is on the one hand guaranteeing tooth
Roller box and external accessory movement normal transmitting, on the other hand by change spline axially engage position to reduce end face and
The failure of spline wear occurs, and reduces and checks replacement frequency, save the cost.
Technical solution of the present invention: a kind of Design of length method for splined shaft of transferring, the method include the following steps:
Step 1 calculates the static strength of splined shaft；
Step 2 provides initial length, calculates the vibration shape of splined shaft, obtains its intrinsic frequency f1；
Step 3 calculates driving frequency f when splined shaft work according to splined shaft working speed2；
Step 4 adjusts spline length, guarantees | f1-f2|/f2> 20% obtains the maximum length L of splined shaft；
The length of step 5, spline housing is N, and as L < N, spline shaft length takes L；As spline shaft length L > N, spline
Shaft length takes N*m, and wherein m takes 70-95%.Above-mentioned technical proposal provides a kind of Design of length method of splined shaft of transferring, In
Maximum value is selected in zone of reasonableness, carries out spline to biggish beat amount by lesser deviation angle
The problems such as adjustment, the solution spline wear as caused by job insecurity, shoulder block end wear.By verifying, spent according to switching
The Design of length method of key axis determines length and splined shaft of transferring has improvement obvious shoulder block end face and internal spline abrasion, drops significantly
Low repairing scrappage, has saved time and cost.
Preferably, in step 2, by the vibration shape of finite element analysis computation splined shaft, the spline under not same order mode is obtained
The intrinsic frequency of axis.A kind of calculation method of splined shaft intrinsic frequency is provided, computational efficiency and precision are improved.
Preferably, the intrinsic frequency obtained under each rank mode step 4 is substituted into calculate.In finite element model technical side
Under case, numerical procedure is furthermore presented, improves computational accuracy.
Detailed description of the invention
Fig. 1 is switching splined shaft；
Fig. 2 is switching splined shaft installation diagram；
Fig. 3 is the corresponding Campbell chart of K=1.
Specific embodiment
By taking certain drive rod as an example, as shown in Figure 1, the splined shaft both ends are provided with keyway, middle position has the shaft shoulder.
As shown in Fig. 2, described splined shaft one end is sleeved in the spline housing of docking structure body.
The design for carrying out switching spline shaft length determines:
Step 1: the static strength of splined shaft is calculated
The spline shaft structure, as shown in Figure 1, the material of the switching splined shaft is 16Cr3NiWMoVNbE, in room temperature item
Under part, specific material parameter is as follows:
1 16Cr3NiWMoVNbE material mechanical performance data of table
| Temperature (DEG C) | E(GPa) | μ | ρ(g/cm3) | σp0.2(MPa) | σb(MPa) |
| 20 | 216 | 0.3 | 7.86 | ≥1130 | ≥1270 |
The switching spline shaft power is 140KW, revolving speed 20041r/min.By torque arithmetic formula T=9459*P/n, meter
It is 66.706Nm that calculation, which can obtain master operating link input torque,.
The maximum stress of spline is calculated according to GB/T 17855-2017 " spline bearing capacity calculation method ", is obtained
To for 432.3MPa, it is less than the minimum yield strength 1350MPa of material, meets Static Strength Design requirement.
Step 2 provides initial length, calculates the vibration shape of splined shaft, obtains its intrinsic frequency f1
Giving the spline shaft length is 200mm, obtains bending vibation mode picture using finite element analysis software, modal calculation extracts preceding 4
Rank calculated result, natural frequency value are shown in Table 2.
The switching each order frequency of splined shaft of table 2
| Order | Frequency (Hz) | Order | Frequency (Hz) |
| 1 rank | 324.23 | 3 ranks | 2828.5 |
| 2 ranks | 1281.4 | 4 ranks | 3838.5 |
1 rank intrinsic frequency and excited frequency are close, resonant conditions occur, and switching splined shaft can be caused to occur deforming and moving answering
Power is unsatisfactory for design requirement.
Step 3 calculates driving frequency f when splined shaft work according to splined shaft working speed2
The spline working speed is 20041r/min, and it is 334.0Hz that driving frequency, which is calculated,.
Step 4 adjusts spline length, guarantees | f1-f2|/f2> 20% obtains the maximum length L of splined shaft
Spline shaft length is gradually adjusted, until obtaining bending vibation mode picture, mould using finite element analysis software when length takes 350mm
State, which calculates, extracts preceding 7 rank calculated result, and natural frequency value is shown in Table 3.
The switching each order frequency of splined shaft of table 3
| Order | Frequency (Hz) | Order | Frequency (Hz) |
| 1 rank | 408.3 | 5 ranks | 4781.2 |
| 2 ranks | 1589.0 | 6 ranks | 5922.0 |
| 3 ranks | 3476.1 | 7 ranks | 8815.9 |
| 4 ranks | 3969.1 |
According to each order frequency and driving frequency of switching splined shaft, the Campbell chart of K=1 is provided, sees Fig. 3.As seen from the figure,
No covibration occurs.Bring each frequency into formula | f1-f2|/f2, margin value is obtained greater than 20%, meets design requirement.
The length of step 5, spline housing is N, and as L < N, spline shaft length takes L；As spline shaft length L > N, spline
Shaft length takes N*m, and wherein m takes 70-95%
The length of splined sleeve is 400mm, therefore spline shaft length takes 350mm.
Claims (6)
1. a kind of Design of length method for splined shaft of transferring, which is characterized in that the method includes the following steps:
Step 1 calculates the static strength of splined shaft；
Step 2 provides initial length, calculates the vibration shape of splined shaft, obtains its intrinsic frequency f1；
Step 3 calculates driving frequency f when splined shaft work according to splined shaft working speed2；
Step 4 adjusts spline length, guarantees | f1-f2|/f2> 20% obtains the maximum length L of splined shaft；
The length of step 5, spline housing is N, and as L < N, spline shaft length takes L；
As spline shaft length L > N, spline shaft length takes N*m, and wherein m takes 70-95%.
2. a kind of Design of length method of splined shaft of transferring according to claim 1, it is characterized in that: in step 2, pass through
The vibration shape of finite element analysis computation splined shaft obtains the intrinsic frequency of the splined shaft under not same order mode.
3. a kind of Design of length method of splined shaft of transferring according to claim 2, it is characterized in that: in step 2, mode
Calculate 4 rank calculated results before extracting finite element analysis.
4. a kind of Design of length method of splined shaft of transferring according to claim 2, it is characterized in that: it will be under each rank mode
Obtained intrinsic frequency substitutes into step 4 and calculates.
5. a kind of Design of length method of splined shaft of transferring according to claim 1, it is characterized in that: according to GB/T
17855-2017 " spline bearing capacity calculation method " calculates the maximum stress of spline, judges the splined shaft being calculated
Static strength whether meet the requirements.
6. a kind of Design of length method of splined shaft of transferring according to claim 1, it is characterized in that: in step 4, according to
Each order frequency and driving frequency of switching splined shaft, provide the Campbell chart of K=1, determine whether covibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910622485.0A CN110399659B (en) | 2019-07-09 | 2019-07-09 | Length design method of switching spline shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910622485.0A CN110399659B (en) | 2019-07-09 | 2019-07-09 | Length design method of switching spline shaft |
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| Publication Number | Publication Date |
|---|---|
| CN110399659A true CN110399659A (en) | 2019-11-01 |
| CN110399659B CN110399659B (en) | 2023-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910622485.0A Active CN110399659B (en) | 2019-07-09 | 2019-07-09 | Length design method of switching spline shaft |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438119A (en) * | 2013-09-01 | 2013-12-11 | 韩凤琳 | Inserter-connected electromagnetic drive clutch with spline shafts having discs and spline sleeves having discs |
-
2019
- 2019-07-09 CN CN201910622485.0A patent/CN110399659B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438119A (en) * | 2013-09-01 | 2013-12-11 | 韩凤琳 | Inserter-connected electromagnetic drive clutch with spline shafts having discs and spline sleeves having discs |
Non-Patent Citations (4)
| Title |
|---|
| 吴昱东等: "基于局域共振声子带隙的扭转减振器设计方法", 《振动与冲击》 * |
| 孙亚峰: "双卧轴搅拌器花键轴优化设计", 《机械工程师》 * |
| 孟凡生: "一款大规格传动轴的设计", 《商用汽车》 * |
| 李泳峄等: "花键轴增量式滚轧成形坯料直径计算及有限元分析", 《锻压技术》 * |
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| CN110399659B (en) | 2023-01-06 |
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Inventor after: Yu Chuan Inventor after: Fan Hongli Inventor after: Chen Changjun Inventor after: Sun Tingna Inventor before: Yu Chuan Inventor before: Chen Changjun Inventor before: Chen Tingna |