Stepping servo actuator based on closed-loop control

Abstract

The invention relates to the technical field of mechanical transmission equipment, and especially relates to a stepping servo actuator based on closed-loop control. The stepping servo actuator comprises a ball spline, a first motor and a second motor are arranged on the ball spline, a shaft body of the ball spline penetrates through a rotor of the first motor, and the rotor of the first motor and the ball spline rotate synchronously; the shaft body of the ball spline penetrates through a rotor of the second motor, and the rotor of the second motor and the ball spline rotate synchronously; and the rotor of the first motor is connected with a first encoder, and a rotor of the second motor is connected with a second encoder. The operation precision of the ball spline is improved, the effect of continuous operation without step loss is achieved, it is ensured that the overall size and weight of a product are effectively controlled, and it is ensured that the application field of the product is not affected under the condition that the product performance is improved.

Description

technical field [0001] The invention relates to the technical field of mechanical transmission equipment, in particular to a stepping servo actuator based on closed-loop control. Background technique [0002] Ball screw, also known as ball screw, is a mechanical transmission element that realizes mutual conversion between rotary motion and linear motion, and is mostly used in the field of tool machinery and precision machinery. A spline is a multi-tooth connection element. The ball spline combines the advantages of the ball screw and the spline. It uses the balls installed in the outer cylinder of the spline shaft to simultaneously perform smooth rolling and transmit torque in the rolling groove made by precision grinding. In addition to having high sensitivity In addition, the load capacity can be greatly improved, and it is suitable for use scenarios where the vibration and shock load is too large, the positioning accuracy is high, and high-speed motion performance is req...

AI Technical Summary

Problems solved by technology

During the movement of the ball spline, there is movement along the Z-axis direction of the straight line and the R-axis direction along the rotation direction of the ball spline itself, so it is necessary to obtain the movement positions of the Z-axis and R-axis data, it is necessary to use two different sensors to overlap with the ball spline shaft. In order to drive the ball spline movement, it is also necessary to connect the external drive structure, so that the final combined structure is not only huge in size and complicated in structure, but also has a self-weight relative to For the ball spline, it will increase a lot, which is not conducive to the installation and operation of the product

[0004] Based on the above problems, there is currently a lack of a product that can obtain the R-axis and Z-axis movement position data of the ball spline while ensuring that the volume and weight specifications of the ball spline do not change much, so as to meet the market demand.

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