Views:11 Author:Site Editor Publish Time: 2020-09-09 Origin:Site
With the popularization of automation, there are more and more high-tech companies. When making manipulator sliding tables, I believe there will be a question. How to choose the suitable precision of the ball screw support unit? Let's listen to the explanation of Suzhou Screw Technology experience!
Currently there are three levels of screw support unit on the market: C3, C5, and C7, each level has its own precision requirements. The fixed end bearing supports use angular ball bearing supports with 30° or 40° contact angle, and the support ends use 6 series deep groove ball bearing, of which:
Level C3 fixed-end bearing support cooperate with P5 bearing. The bearing is DF combined type. There is pre-pressure between the two bearings to avoid the displacement of the ball screw and avoid the excessive back backlash of the machine. The precision of Level C3 fixed end and the supporting end bearing support controls the geometric precision between the datum plane of the bearing support, so that ball screw and the bearing support can maintain excellent rotation precision after combination.
Level C5 fixed end bearing support also cooperate with level P5 bearing. The bearing is DF combined type. There is pre-pressure between the two bearings to avoid the displacement of the ball screw and avoid the excessive back backlash of the machine.
Level C7 bearing support cooperate with with level P0 bearing. The pre-pressure is not controlled between the two bearings, so the back backlash of the machine will be larger. However, because the bearing is DF combination type, it can support the axial load of ball screw to avoid large displacement when the ball screw is stressed.
In addition, the distance tolerances from the benchmark to the center of the bearing will be different for different precision ball screw support.
Through our professional explanations, we believe you have a clear understanding of selecting precision of the ball screw support in the future, and the selection will be more efficient and convenient. If there are any unclear places in the actual application process, welcome you contact us in any time!