Angular displacement measuring and controlling device for revolving platform

Abstract

The invention discloses an angular displacement measuring and controlling device for a revolving platform, which comprises a platform plate of the revolving platform, a supporting seat of the revolving platform, a bearing unit, a control system, a driving device and a fixed frame. The action of the driving device is controlled through a signal of the control system; the bearing unit is arranged between the platform plate and the supporting seat; the fixed frame is arranged on the supporting seat by surrounding the inner wall or the outer wall of the bearing unit; a magnetic scale is arranged on the inner wall or the outer wall of a moving coil of the bearing unit; at least one sensor is arranged on the fixed frame opposite to the magnetic scale; and a signal output end of the sensor is connected to the control system. In the invention, a measuring device is arranged on the revolving platform; a completely new high-precision revolving bearing unit with angle controlling and measuring functions are formed by combining the control system; and the angular displacement measuring and controlling device measures and monitors the bearing in real time by arranging the magnetic scale on the bearing body and combining the sensor and feeds an angular displacement signal back to the control system so as to improve the working precision of the precise revolving platform.

Description

technical field [0001] The invention relates to a precision turntable, in particular to a device for measuring and controlling the angular displacement of the turntable. Background technique [0002] At present, precision rotary tables are mainly used in the field of high-precision rotation and control, such as; CNC machine tools and CNC machining center rotary tables, tank turrets, radar rotary tables, surgical rotary tables, electronic component welding rotary tables, etc. These types of equipment require High transmission precision, and cooperate with high-precision bearings to complete each action. Therefore, in actual operation, due to fatigue and wear of the transmission parts, the precision will gradually decrease, and the operation error will gradually increase, resulting in Serious consequences. For this reason, people think of using elements such as sensors to combine with the stressed rotating parts of the equipment to detect parameters such as vibration, speed, t...

AI Technical Summary

Problems solved by technology

[0002] At present, precision rotary tables are mainly used in the field of high-precision rotation and control, such as; CNC machine tools and CNC machining center rotary tables, tank turrets, radar rotary tables, surgical rotary tables, electronic component welding rotary tables, etc. These types of equipment require High transmission precision, and cooperate with high-precision bearings to complete each action. Therefore, in actual operation, due to fatigue and wear of the transmission parts, the precision will gradually decrease, and the operation error will gradually increase, resulting in Serious consequences. For this reason, people think of using elements such as sensors to combine with the stressed rotating parts of the equipment to detect parameters such as vibration, speed, temperature, etc. on it to analyze the working state of the internal transmission parts ( For example: degree of wear), such as Chinese patent: a sensor bearing, the application number is 200910100833.4, which introduces a sensor bearing structure that uses a Hall sensor and a multi-pole magnetic ring to detect the bearing speed and rotation direction. It is only a single problem. It can only detect and analyze whether the components are in normal working condition, and cannot fundamentally solve the problem of low rotation angular displacement accuracy. How to design a closed-loop control angular displacement measurement system can ensure the working accuracy of transmission parts. At the same time, it is a difficult problem to be solved for real-time measurement, monitoring and feedback.

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