Ball Screw Circulating Device Segmentation
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Solution Overview
Problem
Conventional ball screw devices face issues with distorted corner areas in bent tubular members, which hinder the smooth movement of balls or rollers, and require complex and costly manufacturing processes for the circulating devices.
Innovation Solution
A ball screw device with a circulating system featuring an elongate member with end blocks and a housing/casing structure, allowing for easy and precise molding, and including lubricating compartments and deflecting tongues to guide and lubricate the bearing members, facilitating smooth rotational movement between the ball nut and screw shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If tubular elements are bent from a longitudinal tubular member to guide balls, then the circulating device can be formed, but the corner areas or bent portions become distorted and hinder smooth ball movement
Solution Approach 1:
The circulating device is divided into multiple linear tubular elements (inlet element, connecting means, outlet element) that are assembled together to form the ball circulation path, avoiding the need to bend a single tubular member. This segmentation eliminates distorted corner areas while maintaining the circulating device's functionality.
2Ease of manufacture
If conventional bent tubular members are used for ball circulation, then the structure can be formed, but manufacturing complexity and costs increase
Solution Approach 1:
The circulation path is segmented into multiple linear tubular elements that can be manufactured separately using standard processes and then assembled. This approach simplifies manufacturing compared to bending and forming complex single-piece tubular structures, reducing both process complexity and costs.
Solution Approach 2:
Multiple linear tubular elements are combined through the connecting means to form the complete circulation device. This merging of simple linear components achieves the same functional result as complex bent tubular members but with simpler manufacturing processes.
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
Enables efficient and smooth movement of balls or rollers at high rotational speeds while simplifying the manufacturing and disengagement of the circulating device, reducing manufacturing complexity and costs.
Implementation Method 1
a suitable bearing device or lubricating structure is further required to be provided and engaged between the ball nut and the screw shaft, for facilitating the rotational movement between the ball nut and the screw shaft
Implementation Method 2
a ball screw device having a circulating device for effectively and smoothly receiving and guiding the balls or the rollers or the bearing members to move relative to the ball nut and the screw shaft, and for facilitating the rotational movement of the ball nut and the screw shaft relative to each other in great rotational speeds
Data Source
AI summary
A ball screw device includes a screw shaft rotatably engaged with a ball nut, and a number of bearing members received between the ball nut and the screw shaft, and a circulating device for circulating the bearing members, the circulating device includes an elongate member having two end blocks for engaging into the ball nut and having a passage for receiving the bearing members, and includes a housing member and a casing member each having a portion of the passage of the elongate member for allowing the passage of the elongate member to be opened and exposed and for allowing the housing member and the casing member to be formed with molding procedures.