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Technical requirements for ball screw

 Ball screw is now widely used in factory equipment. Today, let's briefly say what technical requirements are generally needed for ball screw? There are mainly the following aspects:

I. Geometric accuracy, including stroke deviation test, runout test, position tolerance test.

The stroke deviation includes the target stroke tolerance, the effective stroke compensation value, the effective stroke variation, and the stroke deviation within one revolution. Runout deviation includes the outer diameter of the thread to the radial runout of the axis, the runout of the journal, the runout of the shoulder, and the runout of the installation end facing the axis with the nut pretightening.

Materials and heat treatment.

Three, pre-load, pre-tensile load size.

Ball screw is produced by professional manufacturers, if there is no special requirements, as long as the accuracy grade and geometric size can be given.

Ball screw composition: mainly by screw, ball screw nut, ball and circulator, labyrinth sealing ring, oil hole and so on. Working principle: there are arc-shaped spiral grooves on the lead screw and nut. When they are set together, the spiral raceway is formed and filled with ball bearings in the raceway. The ball is rolled along the raceway and circulates through the circulator. Both ends of the circulator also play the role of blocking beads, to prevent the ball along the raceway fell out.

Ball screw structure: ball screw nut pair is a commonly used transmission device for converting rotary motion into linear motion. It uses ball rolling instead of screw nut sliding, friction is small, has good performance.


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