Adjustable Wheel Mandrel With Variable Diameter and Height
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Solution Overview
Problem
Existing machining fixtures for aluminum alloy wheels require multiple, costly mandrels of specific dimensions for different wheel sizes, limiting versatility and increasing manufacturing costs due to their fixed diameter and height.
Innovation Solution
An adjustable mandrel with an outer-diameter adjusting assembly using guide rails, sliders, and an electric cylinder, and a height adjusting assembly utilizing hydraulic principles, allowing for the mandrel's diameter and height to be adjusted to match various wheel specifications, enabling radial positioning without the need for multiple fixtures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If fixed mandrels are used for machining wheels, then the positioning accuracy is ensured, but the manufacturing cost increases and versatility decreases when machining wheels of different sizes
Solution Approach 1:
The mandrel transforms from a fixed structure to a dynamically adjustable one. The outer diameter adjusting assembly allows the mandrel's diameter to change, while the height adjusting assembly enables height adjustment. This dynamic capability allows a single mandrel to accommodate wheels of different sizes while maintaining positioning accuracy through adjustable geometry.
Solution Approach 2:
The mandrel is designed with universal functionality to handle multiple wheel sizes. By incorporating adjustable outer diameter and height mechanisms, one mandrel can serve the function of multiple fixed mandrels, enabling a single device to adapt to different machining requirements without sacrificing positioning precision.
2Manufacturing precision
If fixed mandrels with specific dimensions are designed for different wheel sizes, then the positioning accuracy is maintained, but the manufacturing cost increases due to multiple mandrel productions
Solution Approach 1:
Instead of producing multiple fixed mandrels with different dimensions, the invention creates one mandrel with dynamic adjustment capabilities. The outer diameter adjusting assembly with sliders, guide rails, and adjusting screws allows continuous diameter modification. The height adjusting assembly with hydraulic or manual mechanisms enables height variation. This eliminates the need to manufacture multiple precision mandrels, significantly reducing production costs while maintaining positioning accuracy.
Solution Approach 2:
The mandrel's geometric parameters (outer diameter and height) are made changeable through adjusting mechanisms. The outer diameter can be modified by moving sliders along guide rails driven by adjusting screws. The height can be changed through hydraulic pressure or manual operation. This parameter variability allows a single mandrel to replace multiple fixed-dimension mandrels, reducing manufacturing costs while preserving positioning precision.
3Manufacturing precision
If multiple fixed mandrels are manufactured for different wheel specifications, then the positioning accuracy for each wheel size is ensured, but the device complexity and inventory requirements increase
Solution Approach 1:
The invention consolidates multiple mandrel types into one universal mandrel. The outer diameter adjusting assembly with its sliders, guide rails, and adjusting screws enables diameter customization. The height adjusting assembly with hydraulic cylinders or manual mechanisms enables height customization. This single multi-functional mandrel replaces an inventory of multiple specialized mandrels, reducing complexity while maintaining positioning accuracy for various wheel sizes.
Solution Approach 2:
The mandrel incorporates dynamic adjustment mechanisms that allow it to adapt its geometry to match different wheel specifications. The outer diameter can be adjusted by moving sliders along inclined guide rails. The height can be modified through hydraulic pressure or manual operation. This dynamic adaptability eliminates the need for multiple fixed mandrel types, simplifying the device system while preserving positioning precision.
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 adjustable mandrel provides great versatility, wide applicability, and significantly reduces machining costs by allowing the same mandrel to be used for different wheel sizes, increasing production efficiency and eliminating the need for multiple mandrel designs.
Implementation Method 1
the electric cylinder drives the conical block to move through the pull rod, the conical block pushes the sliders to slide along the guide rails
Implementation Method 2
when the valve is opened, the hydraulic pump extracts the hydraulic oil, and the chassis and the outer-diameter adjusting assembly descend; when the hydraulic pump injects the hydraulic oil, the chassis and the outer-diameter adjusting assembly ascend
Data Source
AI summary
The present application provides an adjustable mandrel and a fixture. The adjustable mandrel comprises an outer-diameter adjusting assembly and a height adjusting assembly, wherein the external diameter and the height of the mandrel can be adjusted according to wheels in different specifications, the wheels in different specifications are clamped, and the radial positioning of the wheel and the axial positioning of the wheel during second-step processing are realized. Two adjusting systems supplement each other, so that the structure is novel, the concept is ingenious, the universality is high, the application range is wide, and the machining cost is reduced.