China OEM High Precision Stainless Steel Rail Transit Spline CZPT Shaft Metal Pin Shaft differential drive shaft

Product Description

High Precision Stainless Steel Rail Transit Spline CZPT Shaft Metal Pin Shaft 

Data Sheet

 

Model NO. Aofa PR01

Appearance Shape

Round

Journal Surface Roughness

0.63-0.16μm

 

Tolerance

ISO F7

 

Material Grade

Ck45, 20mnv6, 42CrMo4

 

Roundness

Dia.Tolerance/2

 

Axis Straightness

0.1/1000mm

 

Hardened Depth

0.5-3.5mm

 

Heat Treatment

None, Induction Hardened, Q+T

 

Chrome Layer Hardness

Min.800hv

 

Chrome Thickness

15-50 Microns

 

Dia.Range

Ø12-Ø320

 

Package

Paper Sleeved, Shockproof Membrane, Wooden Case

 

Material Hardness

HRC15, HRC30, HRC55 Can Be Choice

 

Length Option

4m, 5.8m, 6m, 7.5m

 

Specification

20GP, 40HQ

 

Product Showroom

 

Product Description
 

Pin shaft is a kind of standardized fastener, which can be statically fixed and connected with the connected part.

It is mainly used for the hinge of 2 parts to form a hinge connection.

Scope of application: engineering machinery, excavator, aerial work vehicle, various lifting platforms, forklift pile driver, driving, rail transit, shipbuilding industry, mining equipment, metallurgical equipment and other industries

Product Characteristics

The pin shaft is usually locked with a cotter pin, which is reliable and easy to disassemble. The surface of this product is treated by special grinding and hard chromium electroplating technology, and then polished by mirror. It has the characteristics of wear resistance and corrosion resistance.

 

HangZhou CZPT Machinery Co., LTD., formerly known as HangZhou Xihu (West Lake) Dis.n East CZPT Petrochemical Fitting Corporation, was founded in 1997. CZPT focus on the field of machinery manufacturing, committed to providing cylinder, flange (petrochemical accessories), pin, sheet metal parts and other mechanical products; Heat exchanger, ambient vaporizer, LNG handling arm and other gas engineering products for domestic sales and foreign trade import and export services. CZPT is a leading enterprise who collects production, foreign trade, sales and service. Relying on our technology, taking quality as the core and efficiency as the soul, we aim to bring the best quality mechanical products to our customers, and is committed to becoming a one-stop solution expert of mechanical parts. It is determined to become a one-stop service supplier integrating research and development, production and sales. Enterprises adhere to the “all for the customer” service purpose, implement the “customer first, quality first, service first” business philosophy, the use of omni-channel sales model, to build a global sales network, open CZPT machinery brand development road.

Aofa always follows the purpose of “providing value products for customers, providing development space for employees, and creating outstanding leading brands in the industry”, abides by the enterprise development concept of “creating value by heart”, and adheres to the mission of “manufacturing machinery high-quality products, creating a harmonious society”. The enterprise gathers many young and promising, positive people with lofty ideals, through the perfect management system and competitive incentive mechanism, aims to provide all-round development space for employees, and create a better future with the enterprise. Scientific management mode, intimate service attitude, for the enterprise to win credibility and public praise. In the fierce market competition to establish a good corporate image, and with many enterprises to establish long-term, stable strategic partnership, for the further development of the enterprise has laid a CZPT foundation.

Q1:Can you provide a sample before a big order?
A:Yes, we can .

Q2:Are you able to make Non-standard or customized air cylinders?
A:Yes, we can, we have our own factory, we can satisfy the customers’ demands

Q3:How long is the warranty?
A:We offer 12 months warranty time.

Q4:Can I have my brand on the products?
A:Of course you can.

Q5:What is your delivery time?
A:3-5days if we have stock, 15-25days if we have no stock.

Q6.  Do you test all your goods before delivery?
 A: Yes, we have 100% test before delivery

 

After-sales Service: 1 Year
Warranty: 1 Year
Condition: New
Certification: CE
Customized: Customized
Material: Stainless Steel
Samples:
US$ 10/Piece
1 Piece(Min.Order)

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Request Sample

Customization:
Available

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Customized Request

splineshaft

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 two splines are coupled with no spline misalignment, the maximum tensile root stress shifts to the left by five 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 fifty-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 four 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 three components.
splineshaft

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 two 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 two 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.

Misalignment

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.
splineshaft

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 three factors. A failure mode is often defined as a non-linear distribution of stresses and strains.

China OEM High Precision Stainless Steel Rail Transit Spline CZPT Shaft Metal Pin Shaft   differential drive shaftChina OEM High Precision Stainless Steel Rail Transit Spline CZPT Shaft Metal Pin Shaft   differential drive shaft
editor by CX 2023-05-17