A ball joint is used for allowing free rotation in two planes at the same time while preventing translation in any direction,including rotating in those planes. Combining two such joints with control arms enables motion in all three planes, allowing the front end of an automobile to be steered and a spring and shock (damper) suspension to make the ride comfortable.
Detail Information
In an automobile, ball joints are spherical bearings that connect the control arms to the steering knuckles, and are used on virtually every automobile made. They bionically resemble the ball-and-socket joints found in most tetrapod animals.

A ball joint consists of a bearing stud and socket enclosed in a casing; all these parts are made of steel.The bearing stud is tapered and threaded, and fits into a tapered hole in the steering knuckle. A protective encasing prevents dirt from getting into the joint assembly. Usually, this is a rubber-like boot that allows movement and expansion of lubricant. Motion-control ball joints tend to be retained with an internal spring, which helps to prevent vibration problems in the linkage.

The "offset" ball joint provides means of movement in systems where thermal expansion and contraction, shock, seismic motion, and torsional motions, and forces are present.

On modern vehicles, joints are the pivot between the wheels and the suspension of an automobile. They are today almost universally used in the front suspension, having replaced the kingpin/link pin or kingpin/trunnion arrangement, but can also be found in the rear suspension of a few higher-performance autos. Ball joints play a critical role in the safe operation of an automobile's steering and suspension.

Many currently manufactured automobiles worldwide use MacPherson strut suspension, which utilises one ball joint per side, between the lower end of the strut and the control arm, with the necessary small amount of articulation at the top of the strut being usually provided by an elastomeric bearing, within which is a ball bearing to allow free rotation about the steering axis. So, there are commonly only two ball joints in the suspension, however there will be at least four (track rod ends and rack ends) in the steering linkage.

Detail Information
Shift fork on the car gearbox, connected to the gear lever and located at the lower end of the lever, moves the middle gear wheel to change the input/output speed ratio.

If the shift fork on the machine tool is used for variable speed, it is mainly used in the control mechanism

It is to move the two engaged gears apart and then move one of the gears that can slide on the shaft to the other gear to obtain another speed. Namely, changing the position of the sliding gear on the lathe to achieve variable speed.

Alternatively, it can be applied in mechanisms that control the engagement and disengagement of clutches, thereby controlling lateral or longitudinal feed.

The control arm of a car, as an important component of the vehicle suspension system, plays Support stability,Cushioning vibration,Steering function,Safety guarantee.
Detail Information
A control arm is a suspension component that connects the frame of a vehicle to the steering knuckle, which holds the wheel and tire. The control arm allows the wheel and tire to move up and down as the vehicle goes over bumps and uneven road surfaces while maintaining the alignment of the wheel.

The control arm typically consists of two main parts: a ball joint and a bushing. The ball joint connects the control arm to the steering knuckle and allows the wheel to move in different directions, such as when turning. The bushing connects the control arm to the frame and helps to absorb vibrations and shocks from the road, reducing the transfer of these vibrations to the rest of the vehicle. This helps to improve the overall ride comfort and reduce noise and harshness inside the vehicle.

Control arms play a crucial role in the suspension system of a vehicle. They help to keep the wheels aligned and maintain proper tire contact with the road, which is essential for safety and stability. They also help to improve the ride comfort and handling of the vehicle by reducing the transmission of vibrations and shocks from the road to the rest of the vehicle.

1. Support stability: The primary task of the control arm is to support the weight of the vehicle and ensure its stability during driving. It works closely with shock absorbers and springs to form an efficient suspension system, providing a smooth driving experience for the vehicle.
2. Cushioning vibration: During vehicle operation, the lower control arm can effectively cushion the vibration and impact caused by uneven road surfaces, ensuring ride comfort. At the same time, it can also reduce the damage of these vibrations to other components of the vehicle and extend its service life.
3. Steering function: The lower control arm also plays an important role in vehicle steering. It ensures that the tires maintain the correct angle and direction when turning, allowing drivers to easily and accurately control the vehicle.
4. Safety guarantee: The health condition of the lower control arm is directly related to the driving safety of the vehicle. If the lower control arm malfunctions or is damaged, it may lead to a decrease in vehicle handling and even cause serious traffic accidents. Therefore, once a problem is found with the lower control arm, it should be checked and replaced in a timely manner.

Connecting rod connects the piston and the crankshaft, and transmits the force exerted by the piston to the crankshaft, transforming the reciprocating motion of the piston into the rotational motion of the crankshaft. It is one of the main transmission components of automotive engines, which transmits the pressure of the expanding gas of the piston to the crankshaft, transforming the reciprocating linear motion of the piston into the rotational motion of the crankshaft, in order to output power.
Detail Information
Name：Connecting rod
Process：Forging.Machining.Heat treatment.Surface treatment.
Raw material：ASTM1035，ASTM1045，ASTM1021，ASTM1040，ASTM1320/20Mn2，ASTM1340/40Mn2，ASTM5120/20Cr，ASTM5140/40Cr，ASTM4119/20CrMo，ASTM4140/42CrMo，ASTM4135/35CrMo，ASTM4340/40CrNiMo，ST52-3/Q355/16M
Weight Range：0.1-200kgs
Certificate:ISO/TS16949
Heat treatment：:Normalizing,Quenching and tempering
Inspection:Magnetic Powder Defects Test, Hardness Test, Dimension Test

Die forging produces parts that have excellent mechanical properties, such as high strength and toughness. The process creates a tightly packed grain structure that enhances the strength and durability of the material. As a result, automotive components produced using die forging are highly resistant to wear and tear, as well as to fatigue failure.
Detail Information
Forging materials:ASTM1035，ASTM1045，ASTM1021，ASTM1040，ASTM1320/20Mn2，ASTM1340/40Mn2，ASTM5120/20Cr，ASTM5140/40Cr，ASTM4119/20CrMo，ASTM4140/42CrMo，ASTM4135/35CrMo，ASTM4340/40CrNiMo，ST52-3/Q355/16Mn
Forging Method:Closed die forging,Warm forging,Roll ring forging.
OEM No:Customized
Weight:1-100KGS
Dimension:Customized
Certificates:ISO/TS16949
Heat treatment:Normalizing,Quenching and tempering
Test:Magnetic Powder Defects Test, Hardness Test, Dimension Test