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Introduction To Ball Screw Specifications And Models

Mar 05, 2020
1. According to GB/ t17587.3-1998 and application examples, the ball screw (which has basically replaced the trapezoidal screw and is commonly known as the lead screw) is used to transform the rotary motion into linear motion;Or the linear motion into the rotary motion of the executive component, and has the characteristics of high transmission efficiency, accurate positioning;

2. When the lead screw is taken as the active body, the nut will be transformed into linear motion with the rotation Angle of the lead screw according to the lead of the corresponding specification. The passive workpiece can be connected through the nut seat and nut to achieve the corresponding linear motion.

3, because there is no clearance between ball screw female, linear motion accuracy is higher, especially in frequent commutation without clearance compensation.Ball screw screw mother friction is very small, rotation is very easy.

4. When the ball screw is connected to the motor, a coupling must be installed in the middle to achieve a flexible connection.The synchronous belt can be directly connected with the output shaft of the motor by the synchronous wheel.

5, according to the national standard GB/ t17587.3-1998, ball screw pairs are divided into two categories: positioning ball screw pairs (P) and transmission ball screw pairs (T).The accuracy grade is divided into seven grades, i.e. 1.2.3.4.5.7.10, with the highest accuracy of level 1, which is reduced successively.

6, ball screw rotation nut movement distance is a pitch distance, if it is the screw screw every rotation of the distance between four (or five) screw line, then the screw is four (or five) screw, commonly known as four (or five) screw.Generally small lead ball screws are single line, medium, large or very large lead with two or more lines.