Double-Spindle Friction Welding Machine with Movable Headstock
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Solution Overview
Problem
Existing friction welding machines are limited in their range of application due to being designed for specific workpiece sizes, requiring different machines for varying sizes, which restricts their versatility and accuracy.
Innovation Solution
A double-spindle friction welding machine with axially movable second headstock and a unified feed drive, allowing for adjustable spindle sizes and rotation directions, along with optional flywheel masses and bridges for enhanced force distribution and control, enabling broader workpiece size compatibility and precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-spindle friction welding machine is designed for specific workpiece sizes, then the machine can provide specialized precision for that size range, but the machine cannot accommodate workpieces of different sizes
Solution Approach 1:
The patent applies universality by designing a friction welding machine with two spindles that can accommodate different workpiece sizes. The first spindle is designed for smaller workpieces while the second spindle handles larger workpieces, allowing a single machine to perform multiple functions across different size ranges rather than requiring separate specialized machines for each size category.
Solution Approach 2:
The patent segments the welding capacity by dividing the single welding system into two independent spindles, each optimized for specific workpiece size ranges. This segmentation allows each spindle to maintain high precision for its designated size range while the overall machine system achieves versatility across multiple size categories.
2Adaptability or versatility
If the spindle diameter is increased to accommodate larger workpieces, then the machine can handle bigger components, but the mounting precision of the spindle decreases
Solution Approach 1:
The patent applies local quality by optimizing each spindle's characteristics for its specific function. The first spindle is designed with smaller diameter and higher positioning precision for small workpieces, while the second spindle has larger diameter suitable for large workpieces. Each spindle location has tailored qualities matching its intended workpiece size range, resolving the conflict between size capacity and precision.
3Device complexity
If a single feed drive is used for one headstock, then the drive system remains simple and uniform, but the machine cannot effectively handle both small and large workpieces with different force requirements
Solution Approach 1:
The patent achieves versatility with a uniform feed drive by designing the single feed drive mechanism to control both headstocks through a unified control system. The feed drive can adjust parameters such as feed rate, friction feed, and forge stroke to accommodate different workpiece sizes and requirements, allowing one drive system to perform multiple functions across different operating conditions.
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 solution expands the machine's application range, enhances precision, and allows for more sensitive control of the friction welding process, accommodating a wider variety of workpiece sizes while maintaining a uniform drive system, and improving angular positioning and braking efficiency.
Implementation Method 1
the two spindles may rotate in opposite directions, so that the speed of rotation acting at the site of friction may be greater than in prior-art machines
Data Source
AI summary
A friction welding machine (1) has two headstocks (5, 6), two spindles (8, 9) with a spindle drive (12, 13) and a workpiece holder (22). The first headstock (5) is arranged stationarily at the frame (2). The second headstock (6) is mounted axially movably at the frame (2) and is connected to a feed drive (25). The spindles (8, 9) have different sizes, the second spindle (9) and its spindle drive (13) being designed to be smaller and weaker.