Rotary Joint Electromagnetic Locking Device Backlash Reduction
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Solution Overview
Problem
Existing rotary joint systems face challenges in achieving precise locking and positioning while allowing manual operation and being cost-effective, as they often suffer from large backlash and high costs associated with precision servo reduction motors or inadequate locking with electromagnetic systems.
Innovation Solution
A rotary joint electromagnetic locking device comprising a first electromagnetic sucker, a sliding plate, a rotary plate, and a connecting shaft, along with a second electromagnetic sucker, which uses magnetic isolation and elastic members to control locking and unlocking mechanisms, allowing for tight locking and manual operation by adjusting the adsorption forces of the electromagnetic suckers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a precision servo reduction motor is used, then motion precision is improved, but cost increases and manual operation becomes difficult
Solution Approach 1:
The device segments the motion control function into two independent parts: a servo motor for automated precision motion and an electromagnetic locking device for positioning and manual operation. This segmentation allows each component to optimize for its specific function, reducing overall system complexity and cost while maintaining precision where needed.
Solution Approach 2:
The electromagnetic locking device acts as an intermediary between the servo motor and the load, providing a mechanical locking function that enables manual operation and precise positioning without requiring the servo motor to perform both functions simultaneously. This intermediary component resolves the conflict between automated precision and manual operability.
2Device complexity
If an electromagnetic locking joint is used, then cost is reduced and manual operation is enabled, but backlash increases and positioning precision deteriorates
Solution Approach 1:
The invention merges the advantages of both servo motors and electromagnetic locking devices by integrating them into a single system. The servo motor provides precision motion control while the electromagnetic locking device provides rigid positioning and manual operability, achieving both low cost and high precision simultaneously.
Solution Approach 2:
The electromagnetic locking device performs preliminary action by pre-positioning and pre-locking the mechanism before fine precision adjustments are made by the servo motor. This preliminary mechanical positioning reduces the range and complexity of precision control required, improving overall positioning accuracy while maintaining cost-effectiveness.
3Device complexity
If electromagnetic suckers are used for locking, then manual operation is enabled and cost is reduced, but locking reliability may be insufficient without proper magnetic isolation
Solution Approach 1:
The device extracts and isolates the magnetic fields of the two electromagnetic suckers using magnetic isolation components. This separation prevents magnetic interference between the locking and unlocking mechanisms, ensuring that each electromagnetic sucker operates independently and reliably without affecting the other's performance.
Solution Approach 2:
Magnetic isolation components serve as intermediaries between the two electromagnetic suckers, blocking magnetic field interference and ensuring that the activation of one sucker does not inadvertently affect the other. This intermediary magnetic shielding maintains locking reliability while keeping the system simple and cost-effective.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables precise locking and positioning with reduced backlash, is cost-effective, and allows for manual operation by controlling the locking mechanism through the adsorption forces of the electromagnetic suckers, ensuring reliable and efficient rotary joint performance.
Implementation Method 1
when the first electromagnetic sucker has an adsorption force, the sliding plate is adsorbed to the first contact surface of the first electromagnetic sucker
Implementation Method 2
the plurality of elastic members are spaced apart from each other on the first electromagnetic sucker and each comprises opposite first end and second end
Data Source
AI summary
The present disclosure discloses a rotary joint electromagnetic locking device and a rotary joint, the rotary joint electromagnetic locking device comprising a first electromagnetic sucker, a sliding plate, a rotary plate, a connecting shaft connecting the first electromagnetic sucker and the sliding plate, and a second electromagnetic sucker, different from the prior art. When the first electromagnetic sucker and the second electromagnetic sucker have no adsorption force, the sliding plate and the rotary plate can be locked to each other; when the second electromagnetic sucker has an adsorption force, the rotary plate or the first electromagnetic sucker is adsorbed by the second electromagnetic sucker, making the sliding plate and the rotary plate to be further locked; when the first electromagnetic sucker has an adsorption force, the sliding plate can be adsorbed to the first contact surface of the first electromagnetic sucker, making the sliding plate released from the rotary plate.