Corrosion Resistant Ball Head Screw

Product introduction

Ball head screw is a special fastener with a smooth spherical head. Its core design abandons the traditional wrenching drive method and achieves flexible rotation at multiple angles by cooperating with special spherical bearings or inner spherical screw seats. The biggest feature of this product is that it can provide a full range of angle compensation. When connecting mechanisms that have alignment errors or need to swing freely within a certain cone angle range, the ball head can automatically adjust the angle, effectively eliminating assembly stress and preventing components from getting stuck or worn. Based on their flexible mechanical properties.

 

Ball head screws are mainly used in two major scenarios:

1. As an adjustable connection point: widely used in linkage mechanisms, suspension systems, the ends of push-pull flexible shafts and the adjusting linkages of automation equipment to achieve power transmission and position adjustment.

2. As a movable joint: Commonly found in automobile clutches, steering systems and other parts that need to adapt to complex motion trajectories.

In addition, some ball head screws are designed with internal threads or through holes at the end to facilitate connection with other components. It is an ingenious solution that combines fastening functions and movable joint functions into one. It is an indispensable key component in precision machinery, vehicle engineering and industrial automation.

 

Product features

1. Core features: Provide multi-directional angle compensation

The most notable feature of ball head screws is their spherical head design, which allows them to swing and rotate in multiple directions within the matching spherical bearing or ball socket. This design can automatically compensate for the alignment errors (parallelism, verticality deviation) between connecting parts, effectively eliminate assembly stress, and prevent the mechanism from getting stuck or abnormal wear.

 

2. Reduce friction and wear

The contact between the ball head and the bearing seat is a smooth spherical surface, with a large contact area and low pressure. During the swing process, the friction resistance is small and the operation is smooth, which significantly reduces the wear of the contact surface and extends the service life of the screws and related accessories.

 

3. Achieve flexible mechanical movement

It upgrades the simple fastening function to the movable joint function. It can smoothly transmit reciprocating push-pull motion and complex swing motion, and is an ideal connector for building complex kinematic pairs such as link mechanisms and suspension systems.

 

4. Simplify design and installation

Through the angle compensation capability of the ball head itself, the stringent requirements for machining and assembly accuracy can be appropriately reduced, thereby simplifying the overall structural design, reducing manufacturing costs, and making installation and adjustment more convenient.

 

5. High strength and reliability

To ensure reliability under dynamic loads, ball head screws are usually made of high-strength materials and undergo heat treatment. The ball head part has high hardness and smoothness to ensure mechanical performance and stability in long-term vibration environments.

 

Product application

1. Automobile control system

This is the most classic application area of ball head screws. It is widely used in steering rods, clutch release systems, throttle connecting rods and transmission shifting mechanisms. In these parts, ball head screws can adapt to the relative movement and vibration between the chassis and the body, ensuring that control commands are transmitted accurately and smoothly, while compensating for installation tolerances and preventing components from getting stuck.

 

2. Industrial automation and robotics

In automated production lines, industrial robot joints and transmission mechanisms, ball head screws are often used as end connectors of adjustable connecting rods and actuators. It can compensate for small alignment errors, ensure the flexibility of mechanical movement, reduce the additional load on the servo motor, and improve the movement accuracy and stability of the entire system.

 

3. Mechanical equipment and hydraulic systems

It is often used at the end of the piston rod of hydraulic cylinders and pneumatic cylinders to convert linear motion into a certain angle of swing. In addition, it is also used as a movable connection point in the linkage mechanisms of various types of machine tools, textile machinery, and packaging machinery to adapt to structural changes caused by thermal expansion and contraction or force deformation.

 

4. Aerospace and precision instruments

In aircraft control systems, landing gear and high-precision measuring instruments, ball head screws are used in movable connection parts that require extremely high reliability and flexibility. Its high strength and fatigue resistance properties meet the extreme requirements for safety and durability in these fields.

 

FAQ

Q: What is the main function of ball head screws? What is the core difference between it and ordinary screws?

A: The core function of ball head screws is to provide movable connection and angle compensation, rather than simple tightening. The fundamental difference between it and ordinary screws is that ordinary screws are rigid and static connections after being tightened by threads; ball head screws cooperate with spherical bearings and other accessories to form a movable joint that can swing in multiple directions, which can adapt to dynamic movements and eliminate alignment errors.

 

Q: What accessories are usually used with ball head screws?

A: Ball head screws almost always need to be used with a spherical bearing or a spherical socket. The inner spherical surface of the joint bearing cooperates with the spherical head of the ball screw to form a low-friction, flexibly rotating kinematic pair, thereby realizing its core function.

 

Q: Do ball head screws need to be lubricated during use?

A: Yes, usually required. Although the surface of the ball head is usually smooth, in swing applications with high load, high frequency or low friction requirements, regularly applying appropriate grease to the contact surface between the ball head and the bearing can significantly reduce wear, reduce frictional heat, and prevent abnormal noise, thereby extending the service life of the entire kinematic pair.

 

Q: Can it be used in high-speed rotation applications?

A: Generally not recommended. Ball screws are designed for swing and angle adjustment, not continuous high-speed rotation. High-speed rotation will cause overheating and abnormal wear of the contact surface with the bearing, and may lead to rapid failure due to centrifugal force and other issues. For high-speed rotating conditions, special rotating joints or bearings should be selected.

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