The purpose and function of the guide rod
The purpose and function of the guide rod
The guide rod (ball screw), also known as the guide screw, is a mechanical part that moves between the steel ball nut and the screw. The traditional screw sliding contact is converted into rolling contact and then the steel ball is rotated in the nut. The motion is converted into linear motion transmission. The guide rod has the characteristics of high positioning accuracy, high service life, low pollution and high-speed forward and reverse transmission and transformation transmission. Because of the above characteristics, the guide rod has become one of the important parts in the positioning measurement system of precision technology industry and precision machinery industry.
The guide rod, the spring guide rod and the side guide rod are all used on the side guard plate. The spring guide rod is connected to the side guard plate, and the spring of the side guard plate automatically falls off; one end of the side guide rod is connected with the side guard plate, The other end is connected with the side push jack. The main function of the two guide rods is to connect and guide the side guards to move forward and backward. The history of people using screws for transmission is not very long. Traditional screws have been poorly positioned and easily damaged. It was not until 1898 that people tried to insert a steel ball between the nut and the screw to improve the problem of poor positioning and easy damage, replacing sliding friction with rolling friction. In 1940, the guide rod was placed on the steering device of the car. This was a huge revolution in the application of the guide rod and gradually replaced the traditional Ahem screw. Until recent years, the guide rod has become one of the widely used components in the industry. Guide rod in the world only Britain, the United States, Germany, Japan and other advanced industrial countries can mass production guide rod. Since 1982, the pool factory of Hefeng Precision Company in Taichung County has produced guide rods. Taiwan's own ability has officially opened the era of producing such high-precision parts. Today, Taiwan has been in the research and development and production capacity of guide rods. It has stood side by side with other advanced industrial countries and has further become a major supply base in the world. This can be said to be one of the remarkable achievements of Taiwan's mechanical parts industry. The guide rod is mainly composed of screw, nut, ball, fixed seat, brush scraper and oil return pipe. According to the different circulation system, it is divided into outer circulation type, inner circulation type and end plug circulation type guide rod.
The structure of the guide rod is traditionally divided into two types: the inner circulation structure (represented by the circular inverted device and the elliptical inverted device) and the outer circulation structure (represented by the sleeve). These two structures are also commonly used. There is no essential difference in the performance of the two structures, but the installation and connection dimensions of the inner loop structure are small. External circulation structure installation connection dimensions. There are more than ten kinds of guide rod structure, but the commonly used ones are: internal circulation structure; external circulation structure; end cover structure; cover construction. The inner loop structure inverter has various shapes, but the common shapes are round and oval. Because the spherical reverse channel is short, it is not as smooth as the elliptical structure. The preferred reversal device structure is an elliptical inner channel structure. Because the ball reversing does not pass through the screw tooth top, similar to the external circulation structure, the influence of the chamfering error of the screw tooth top on the ball reversing is eliminated. However, due to the complexity of the manufacturing process, the popularity of the structure is affected.
Guide rod
Other Content
2024-01-02
Can meet your needs of a variety of materials!
WeChat Public Number
Address:
Foreign companies
Established：April 20, 1994