Ball Screw Lifting Structure for Glove Box Roll Press Precision
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Solution Overview
Problem
Existing roll press machines face challenges in maintaining uniform thickness precision of press-formed works, leading to undesired gaps and reduced battery performance, and require a compact lifting apparatus that can operate within a glove box without hydraulic systems to handle sulfide-based materials safely.
Innovation Solution
An electric lifting apparatus using a ball screw mechanism with a rotational force from an electric motor to achieve high precision movement, ensuring the apparatus is compact and hydraulic system-free, allowing safe operation within a glove box.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a feed screw mechanism or hydraulic cylinder is used to move the lifting apparatus, then the lifting function is achieved, but the apparatus becomes too large to be contained in a glove box
Solution Approach 1:
The patent extracts the hydraulic system from the lifting apparatus, replacing it with a compact electric motor-driven ball screw mechanism. This removal of the hydraulic cylinder and associated components significantly reduces the apparatus volume while maintaining the lifting function, enabling containment within a glove box environment.
Solution Approach 2:
The patent replaces the hydraulic mechanical system with an electric motor and ball screw mechanism. This substitution achieves the same lifting function with significantly reduced space requirements, as the electric motor and ball screw assembly occupies much less volume than a hydraulic cylinder of equivalent lifting capacity.
2Reliability
If a hydraulic system is used in the lifting apparatus, then lifting function is achieved, but pollution risk increases due to potential oil leakage
Solution Approach 1:
The patent removes the hydraulic system entirely from the lifting apparatus, eliminating the source of potential oil leakage and pollution. The electric motor-driven ball screw mechanism provides the same lifting function without any hydraulic fluids, thereby preventing pollution while maintaining reliability.
Solution Approach 2:
The patent substitutes the hydraulic mechanical system with an electric drive system using a ball screw mechanism. This replacement eliminates hydraulic fluids and associated leakage risks, providing a cleaner, more environmentally friendly solution while maintaining the lifting function.
3Manufacturing precision
If conventional lifting apparatus is used, then lifting function is achieved, but thickness precision of press-formed works deteriorates
Solution Approach 1:
The patent replaces conventional lifting mechanisms with a precision electric motor-driven ball screw system. The ball screw mechanism provides high precision linear motion control, enabling accurate control of the lifting movement and thereby maintaining uniform thickness precision in press-formed works.
Solution Approach 2:
The patent changes the control parameter from manual or hydraulic control to electric motor control with precise speed and position regulation. This parameter change enables fine control of the lifting speed and position, directly improving the thickness precision of the press-formed works.
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 electric lifting apparatus maintains high precision in controlling the movement of the roll press machine, ensuring uniform thickness precision of press-formed works and preventing hydraulic system-related pollution, making it suitable for handling sensitive materials like sulfide-based compounds within a glove box.
Implementation Method 1
a ball screw including a threaded shaft having an axis, a pair of bearings configured to support the threaded shaft in such a manner that the threaded shaft is rotatable around the axis, and a nut threadedly engaged with the threaded shaft
Implementation Method 2
an electric motor supported by the frame and having an output shaft being rotatable; a rotational force transferring mechanism configured to transfer a rotational force of the output shaft to a rotational force of the threaded shaft
Implementation Method 3
a wedge member 402 having a sloped surface 407a is used to move up and down with respect to a housing 408 having a sloped surface 408a
Data Source
AI summary
A lifting apparatus of the present invention includes: a ball screw; a frame configured to support bearings for the ball screw; an electric motor supported by the frame and having an output shaft being rotatable; and a rotational force transferring mechanism configured to transfer a rotational force of the output shaft as a rotational force of a threaded shaft of the ball screw. A first moving body providing a first sliding surface inclined at a predetermined angle with respect to a plane including a direction of an axis is fixed to a nut of the ball screw. A second moving body is arranged to be movable linearly in a direction perpendicular to the direction of the axis with respect to the frame, has a second sliding surface configured to be slidably movable with respect to the first sliding surface, and is caused to move linearly in the direction perpendicular to the direction of the axis by a slidably movement between the first sliding surface and the second sliding surface when the nut and the first moving body moves linearly in the direction of the axis. The threaded shaft extends through the first moving body in the direction of the axis, and the pair of bearings is arranged on both sides of the first moving body.