Railway Wheel Boring Clamp With Slewing-Ring Jaw Centering
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Solution Overview
Problem
Existing railway wheel boring machines, such as vertical lathes and traditional boring machines, struggle to meet the high precision requirements for machining the bore of the hub of railway wheels, and often require oversized clamping plates to secure and center wheels of varying diameters.
Innovation Solution
A railway wheel boring machine with a non-rotatory clamping plate featuring a clamping unit with three jaws connected via transmission rods and a slewing ring driven by actuators, allowing for synchronized jaw movement and compact design, enabling secure fixation and centering of wheels of different diameters without oversizing the clamping plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional boring machines with spindles and hydraulic motors are used to secure and center the wheel, then the wheel can be securely fixed and centered on the clamping plate, but the clamping plate must be oversized to accommodate the hydraulic motors and spindles
Solution Approach 1:
The patent replaces the traditional mechanical system of hydraulic motors and spindles with a cam-based mechanical system. The cam mechanism converts rotational motion into linear motion to drive the jaws, eliminating the need for hydraulic components and reducing the overall size of the clamping plate while maintaining secure wheel fixation and centering capability
Solution Approach 2:
Instead of using motors and spindles that require significant space, the invention inverts the approach by using a compact cam mechanism where the motion generation element (cam) is small and can be positioned centrally, allowing the clamping plate to be much smaller while still achieving reliable wheel securing and centering
2Adaptability or versatility
If vertical lathes are used for machining the bore of the hub, then the machine is versatile for various machining tasks and reprofiling processes, but they are expensive and cannot meet the current high precision requirements for processing the bore of the wheel
Solution Approach 1:
The boring machine is designed with a universal clamping plate that can accommodate wheels of different diameters through the cam-driven jaw mechanism, allowing the same machine to perform various boring operations on different wheel sizes, thus achieving versatility without sacrificing precision
Solution Approach 2:
The invention uses adjustable cam mechanisms that can be configured for different wheel diameters, allowing the clamping and centering parameters to be changed to suit different machining tasks while maintaining high precision bore machining capability
Data Source
AI summary
A railway wheel boring machine for machining the bore of the hub of the railway wheel. The machine includes a base, a column, a workhead sliding on the column, a rotatory boring bar arranged on the workhead, and a non-rotatory clamping plate. Associated with the non-rotatory clamping plate is a clamping unit for clamping and centering the railway wheel. The clamping unit includes at least three jaws that move along straight paths converging at the center or center portion of the non-rotatory clamping plate. Each jaw is attached to a transmission rod having a first end attached to the jaw and a second end attached to a slewing ring that is driven to rotate by actuators. The rotating of the slewing ring drives the transmission rods to move the jaws to secure the railway wheel.