Nanjing Jiangning Shuntai Precision Machinery Factory
Why do our ball screw receive a lot of praise
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Why do our ball screw receive a lot of praise

Why do our ball screw receive a lot of praise

November 10, 2023

We have extremely high standards and strict rules and regulations when making ball screw.

The following are the points we need to pay attention to during the production of ball screws.

The positioning system of machine tools is usually driven by ball screws, which have high stiffness and low sensitivity to external disturbances. However, as modern machine tools increase positioning speed and acceleration, the resonant modes of these systems may be excited, thereby reducing trajectory tracking accuracy. Therefore, machine design and controller selection and adjustment require a dynamic model that includes vibration modes.

The basic function of the ball screw feed driver is to convert the rotational motion of the servo motor into linear reciprocating motion of the platform. The ball screw feed drive device used in CNC machine tools is modular and integrated with high-performance mechanical components such as roller/ball linear guide rails, pre tensioned ball screw pairs, screw shafts, bearing support units, bolt joints, couplings, etc. The ball screw feed driver needs to transmit load and motion to the spindle, tool holder, or workpiece with high positioning accuracy and low friction. The platform is generally supported by four carriages and two guide rails to ensure sufficient stiffness. The nut and platform are installed together through flange ends and bolts. The screw shaft passes through the nut cavity, and its two ends are supported by bearing support units. The bearing support unit is fixed to the base by bolts and consists of a ball bearing, housing, cover, and locking nut.

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