China high quality Custom Machining Metal Spline Shafts near me shop

Product Description

Product Description:;
1); 15years’ production experience 
2);  could help customer design the mold and offer valued suggestions to reduce costs for customer
3);  can handle with aluminum alloy,; A360,; A380,; A383,; AlSi10Mg,; AlSi9Cu3,; ADC3,; ADC6,; ADC12,; ZL104 and ZL107
4);  ISO9001-2008 certified
5);  OEM is welcome 
6);  PPAP documents is available if needed.;

CNC Machining Detailed Information

Material aluminiums,; zinc,; steel,; stainless steels,; brass,; copper,; POM etc.; according to customer drawings and specifications.;
Make From bar stock,; forging parts,; casting parts,; extrusion parts etc.;
Machining process turning,; milling,; grinding,; drilling,; reaming etc.;
Micro machining polishing,; precise grinding,;etc.;
Surface treatment  anodizing,; zinc plating,; chorme plating,;nickel plating,; passivating,;powder coating,; painting and so on
Tolerance profile dimension +/-0.;02mm,; hole diameter  +/-0.;005mm.;
Report available Material chemical compsition report,; Mechanical Property report and dimenal report
PPAP Level III documents Available
Drawing software PRO/E,;  Auto CAD,;  Slid Work,;  UG,; etc
Lead time 20 days
Package packaging no more than 35lbs per caton,; pallet or crate outside packaging.;
Application Industrial machinery parts,; Marine hardwares,; Pipe Fitting Parts,; Textile machinery parts,; Sport facility parts,; Pneumatic tools parts,; Fluid equipment parts,; Copper alloy parts,; Food machinery parts,; Auto parts,; Elevator Parts,; Air compressor Parts,; Electric machine & hardware fittings,; Mining & earthmoving machinery accessories,; pump body and valve 

Company Introduction:;
We are professional industrial components supplier from ZheJiang ,; East China,; We worked with 60- plus strong manufacturers and our own factory which is located in HangZhou area.; We have set up a rather consummate international marketing web with a group of stable clients,; and our export trade extends up to a hundred of countries and regions);Our major product lines include various kinds of metal parts manufacturing,; from all kinds of manufacturing process(machining,; casting,; stamping and so on);.;  We have gained the certification of ISO9000 control system by China certification center and some parts we offered having past TUV/GS test and CE certificated.; We can do process control jobs,;and SPC as customer requires.;

Factory Review:;

Inspection Equipments:;

Packaging Information:;
1.; put light oil CZPT product
2.; VCI packaging is available with desiccant
3.; pack product individually by bubble bag or Foam packaging.;
4.; good quality carton pack by Grade A carton,; each carton is no more than 35lbs
5.; pallet or wooden case
For non-steel products:;
1.; pack product individually by bubble bag
2.; good quality carton pack,; each carton is no more than 35lbs
3.; pallet or wooden case

Our Services:; 
1.; Provide customized Sevice:; could make product for customer according to customer samples or drawings
2.; Can deal with various drawings soft wares:;  PRO/E,;  Auto CAD,;  Slid Work,;  UG,; etc
3.; Could offer samples for free 
4.; Submit samples with official inspection reports including  Material chemical compsition report,; Mechanical Property report and dimensional report
5.; Can provide the Third Party Inspection Report
6.; PPAP documents are available
7.; Could provide at least 1 year quality guarantee after customer receives the products
8.; We could supply storage service for customer if required.;
9.; Leadtime:; 20days for samples,; 30days for production.;

Q1:; What’s your MOQ?                     
A1:;Our MOQ is depending on the weight,; basically is 200kgs per order.;         
Q2:; Do you offer free sample?
A2:;we can provide you a sample but you need to pay for it and the freight ,;paypal and west union payment method is also accepted                                                                                                
Q3:; Are you manufacturer or trader?
A3:;We are both trader and manufacturer owning  a factory over 5000 sqm mainly producting aluminum/zinc die casting products and offer CNC machining srvices.; Also we work with many long term stable outsourcing factories to supply all other processes produces for our customers.; 
Q4:; Can you make packing and logo as customer request?
A4:; Yes .;we can .;but you should pay for the extra cost caused .;

How to Calculate Stiffness, Centering Force, Wear and Fatigue Failure of Spline Couplings

There are various types of spline couplings. These couplings have several important properties. These properties are: Stiffness, Involute splines, Misalignment, Wear and fatigue failure. To understand how these characteristics relate to spline couplings, read this article. It will give you the necessary knowledge to determine which type of coupling best suits your needs. Keeping in mind that spline couplings are usually spherical in shape, they are made of steel.

Involute splines

An effective side interference condition minimizes gear misalignment. When 2 splines are coupled with no spline misalignment, the maximum tensile root stress shifts to the left by 5 mm. A linear lead variation, which results from multiple connections along the length of the spline contact, increases the effective clearance or interference by a given percentage. This type of misalignment is undesirable for coupling high-speed equipment.
Involute splines are often used in gearboxes. These splines transmit high torque, and are better able to distribute load among multiple teeth throughout the coupling circumference. The involute profile and lead errors are related to the spacing between spline teeth and keyways. For coupling applications, industry practices use splines with 25 to 50-percent of spline teeth engaged. This load distribution is more uniform than that of conventional single-key couplings.
To determine the optimal tooth engagement for an involved spline coupling, Xiangzhen Xue and colleagues used a computer model to simulate the stress applied to the splines. The results from this study showed that a “permissible” Ruiz parameter should be used in coupling. By predicting the amount of wear and tear on a crowned spline, the researchers could accurately predict how much damage the components will sustain during the coupling process.
There are several ways to determine the optimal pressure angle for an involute spline. Involute splines are commonly measured using a pressure angle of 30 degrees. Similar to gears, involute splines are typically tested through a measurement over pins. This involves inserting specific-sized wires between gear teeth and measuring the distance between them. This method can tell whether the gear has a proper tooth profile.
The spline system shown in Figure 1 illustrates a vibration model. This simulation allows the user to understand how involute splines are used in coupling. The vibration model shows 4 concentrated mass blocks that represent the prime mover, the internal spline, and the load. It is important to note that the meshing deformation function represents the forces acting on these 3 components.

Stiffness of coupling

The calculation of stiffness of a spline coupling involves the measurement of its tooth engagement. In the following, we analyze the stiffness of a spline coupling with various types of teeth using 2 different methods. Direct inversion and blockwise inversion both reduce CPU time for stiffness calculation. However, they require evaluation submatrices. Here, we discuss the differences between these 2 methods.
The analytical model for spline couplings is derived in the second section. In the third section, the calculation process is explained in detail. We then validate this model against the FE method. Finally, we discuss the influence of stiffness nonlinearity on the rotor dynamics. Finally, we discuss the advantages and disadvantages of each method. We present a simple yet effective method for estimating the lateral stiffness of spline couplings.
The numerical calculation of the spline coupling is based on the semi-analytical spline load distribution model. This method involves refined contact grids and updating the compliance matrix at each iteration. Hence, it consumes significant computational time. Further, it is difficult to apply this method to the dynamic analysis of a rotor. This method has its own limitations and should be used only when the spline coupling is fully investigated.
The meshing force is the force generated by a misaligned spline coupling. It is related to the spline thickness and the transmitting torque of the rotor. The meshing force is also related to the dynamic vibration displacement. The result obtained from the meshing force analysis is given in Figures 7, 8, and 9.
The analysis presented in this paper aims to investigate the stiffness of spline couplings with a misaligned spline. Although the results of previous studies were accurate, some issues remained. For example, the misalignment of the spline may cause contact damages. The aim of this article is to investigate the problems associated with misaligned spline couplings and propose an analytical approach for estimating the contact pressure in a spline connection. We also compare our results to those obtained by pure numerical approaches.


To determine the centering force, the effective pressure angle must be known. Using the effective pressure angle, the centering force is calculated based on the maximum axial and radial loads and updated Dudley misalignment factors. The centering force is the maximum axial force that can be transmitted by friction. Several published misalignment factors are also included in the calculation. A new method is presented in this paper that considers the cam effect in the normal force.
In this new method, the stiffness along the spline joint can be integrated to obtain a global stiffness that is applicable to torsional vibration analysis. The stiffness of bearings can also be calculated at given levels of misalignment, allowing for accurate estimation of bearing dimensions. It is advisable to check the stiffness of bearings at all times to ensure that they are properly sized and aligned.
A misalignment in a spline coupling can result in wear or even failure. This is caused by an incorrectly aligned pitch profile. This problem is often overlooked, as the teeth are in contact throughout the involute profile. This causes the load to not be evenly distributed along the contact line. Consequently, it is important to consider the effect of misalignment on the contact force on the teeth of the spline coupling.
The centre of the male spline in Figure 2 is superposed on the female spline. The alignment meshing distances are also identical. Hence, the meshing force curves will change according to the dynamic vibration displacement. It is necessary to know the parameters of a spline coupling before implementing it. In this paper, the model for misalignment is presented for spline couplings and the related parameters.
Using a self-made spline coupling test rig, the effects of misalignment on a spline coupling are studied. In contrast to the typical spline coupling, misalignment in a spline coupling causes fretting wear at a specific position on the tooth surface. This is a leading cause of failure in these types of couplings.

Wear and fatigue failure

The failure of a spline coupling due to wear and fatigue is determined by the first occurrence of tooth wear and shaft misalignment. Standard design methods do not account for wear damage and assess the fatigue life with big approximations. Experimental investigations have been conducted to assess wear and fatigue damage in spline couplings. The tests were conducted on a dedicated test rig and special device connected to a standard fatigue machine. The working parameters such as torque, misalignment angle, and axial distance have been varied in order to measure fatigue damage. Over dimensioning has also been assessed.
During fatigue and wear, mechanical sliding takes place between the external and internal splines and results in catastrophic failure. The lack of literature on the wear and fatigue of spline couplings in aero-engines may be due to the lack of data on the coupling’s application. Wear and fatigue failure in splines depends on a number of factors, including the material pair, geometry, and lubrication conditions.
The analysis of spline couplings shows that over-dimensioning is common and leads to different damages in the system. Some of the major damages are wear, fretting, corrosion, and teeth fatigue. Noise problems have also been observed in industrial settings. However, it is difficult to evaluate the contact behavior of spline couplings, and numerical simulations are often hampered by the use of specific codes and the boundary element method.
The failure of a spline gear coupling was caused by fatigue, and the fracture initiated at the bottom corner radius of the keyway. The keyway and splines had been overloaded beyond their yield strength, and significant yielding was observed in the spline gear teeth. A fracture ring of non-standard alloy steel exhibited a sharp corner radius, which was a significant stress raiser.
Several components were studied to determine their life span. These components include the spline shaft, the sealing bolt, and the graphite ring. Each of these components has its own set of design parameters. However, there are similarities in the distributions of these components. Wear and fatigue failure of spline couplings can be attributed to a combination of the 3 factors. A failure mode is often defined as a non-linear distribution of stresses and strains.

China high quality Custom Machining Metal Spline Shafts     near me shop China high quality Custom Machining Metal Spline Shafts     near me shop


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