Automotive Hub Circumferential Positioning via Servo-Driven Lead Screw
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for machining automobile hubs require manual axial and spoke direction positioning, which is labor-intensive and costly, limiting the efficiency and cost-effectiveness of the production process.
Innovation Solution
A circumferential positioning device comprising a rotary positioning seat, transition seat, bearing, positioning pin, positioning cylinder, main rotating shaft with sliding spline, coupling assembly, lead screw, and servo motor, which enables automatic axial and spoke direction positioning of the hub through a belt pulley system and snap-gauge assembly, allowing for precise alignment and reduced human intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual positioning methods are used for hub machining, then operational flexibility is maintained, but labor intensity increases and production efficiency decreases
Solution Approach 1:
The positioning device enables self-positioning of the hub through automatic engagement of positioning pins with positioning holes. The system performs its own positioning function without requiring manual intervention, thereby improving productivity while reducing labor intensity.
Solution Approach 2:
The patent replaces manual mechanical positioning with an automated positioning system that uses servo motors, lead screws, and automated pin engagement mechanisms. This substitution of manual operations with automated mechanical systems resolves the contradiction between productivity and automation extent.
2Productivity
If automated positioning systems are implemented, then production efficiency improves, but device complexity increases
Solution Approach 1:
The positioning device is divided into modular components including positioning pins, positioning holes, servo motors, lead screws, and coupling assemblies. Each module performs a specific function and can be independently manufactured and assembled, reducing overall device complexity while maintaining high productivity.
Solution Approach 2:
The positioning device incorporates universal features such as the positioning pin that can engage with positioning holes at different locations, and the lead screw mechanism that provides both rotational and linear motion functions. This multi-functionality reduces the need for multiple specialized components, thereby managing device complexity.
3Manufacturing precision
If precise positioning is achieved through automated mechanisms, then manufacturing precision improves, but device complexity and cost increase
Solution Approach 1:
The patent introduces intermediary elements such as the coupling assembly that mediates between the lead screw and the main rotating shaft, and the positioning pin that mediates between the positioning cylinder and the hub. These intermediaries simplify the transmission of motion and force while maintaining positioning precision, thereby managing device complexity.
Solution Approach 2:
The positioning holes are pre-formed in the hub at specific locations, and the positioning pins are pre-configured in the positioning device. This preliminary preparation of positioning features eliminates the need for complex real-time calculation and adjustment mechanisms during the positioning process, maintaining precision while reducing device complexity.
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 device facilitates automatic and cost-effective production of automobile hubs by enabling precise circumferential positioning, reducing labor costs and improving production efficiency through automated alignment and machining processes.
Implementation Method 1
the lead screw (12) is driven by the rotation of the servo motor (15) to move up and down in the nut (14), so as to drive the main rotating shaft (9) with the sliding spline to move up and down
Implementation Method 2
belt pulley servo motor (18) drives a small belt pulley axle (19) to drive a small belt pulley (20) to rotate, and a large belt pulley (22) is connected with the small belt pulley (20) through a belt (21)
Implementation Method 3
positioning pin (5) is connected to positioning cylinder (6)... two grooves, which pass through the center of a center hole to locate on the same straight line and are formed in the bottom surface of the flange of the hub, just match with and correspond to two bosses which pass through a center line on the top face of a positioning seat (2)
Data Source
AI summary
A circumferential positioning device of automobile hub having rotary positioning seat, transition seat, bearing, positioning pin, positioning cylinder, bearing, base frame, main rotating shaft with sliding spline, coupling assembly, link snap-gauge assembly, lead screw, connecting bolt, nut, servo motor, lower bracket of main rotating shaft, small bracket of belt servo motor, belt pulley servo motor, small belt pulley axle, small belt pulley, belt, large belt pulley. The device in the present invention two radial grooves passing through the center that are formed in the bottom surface of the flange of the hub, correspond to the spoke direction on the facade of the hub and are just matched with the two radial bosses passing through the center on the top face of the positioning seat to achieve a positioning purpose.