Threaded Shaft Support for Pipe Machining Stability
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Solution Overview
Problem
Existing machining tools for tubular or round-bar pieces face challenges in achieving a straight cutting result across large diameters, lack support for stable operation, and are cumbersome, while also struggling with thin-walled pipes and adjusting cutting depth optimally.
Innovation Solution
A compact machining apparatus with a rotatable frame element and adjustable threaded shaft support elements, allowing for precise positioning and rotation of the machining unit, along with rotatable support wheels for stable guidance and adjustable cutting depth, enabling efficient cutting and beveling across various diameters, including large and thin-walled pipes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a clamping mechanism with arms extending around the piece is used for large diameter pipes, then the apparatus can machine large diameter pieces, but the frame must be very long (exceeding 1000 mm for a 1000 mm diameter piece), making the apparatus bulky, heavy, and hazardous for manual handling
Solution Approach 1:
The apparatus divides the support function into two separate support elements (first support element and second support element) that can be independently positioned along the threaded shaft. This segmentation allows each support element to be optimally positioned for the specific workpiece diameter, eliminating the need for a single long frame structure and reducing overall apparatus size and weight.
Solution Approach 2:
The support elements are made adjustable along the threaded shaft, allowing the distance between them to be dynamically changed according to the workpiece diameter. This dynamic adjustment capability enables the apparatus to adapt to different sizes without requiring multiple fixed-frame configurations, thereby maintaining compactness while handling various diameters including large ones.
2Stability of the object's composition
If a clamping mechanism is used for thin-walled pieces, then the apparatus can hold the workpiece, but the clamping mechanism compresses the piece and changes its shape, making straight cutting difficult or impossible
Solution Approach 1:
The threaded shaft acts as an intermediary mechanism between the support elements and the workpiece. Instead of direct clamping force on the thin-walled piece, the threaded shaft provides a distributed, adjustable support structure that can accommodate the workpiece shape without compression, thereby maintaining both holding stability and cutting precision.
Solution Approach 2:
The apparatus changes the support parameter from fixed clamping force to adjustable positional support. By allowing the support elements to be positioned at different locations along the threaded shaft, the system adapts to thin-walled pieces by providing support without compression, thus preventing shape changes while maintaining stability during cutting.
3Manufacturing precision
If multiple equipment of various sizes are employed for pieces of various diameters, then each piece size can be optimally machined, but the cost increases as it requires at least two or three pieces of equipment
Solution Approach 1:
The apparatus is designed with universal applicability through the adjustable support elements on the threaded shaft. The same apparatus can machine workpieces of various diameters by simply repositioning the support elements, eliminating the need for multiple specialized equipment pieces and reducing overall system complexity while maintaining optimal machining capability.
Solution Approach 2:
The dynamic adjustability of the support elements along the threaded shaft enables a single apparatus to function across multiple diameter ranges. This dynamic configuration replaces the need for multiple fixed-size equipment, reducing device complexity while preserving the ability to optimally machine pieces of various diameters.
4Device complexity
If the distance between support elements is fixed, then the apparatus structure is simple, but it cannot adapt to different workpiece diameters and maintain precise cutting alignment
Solution Approach 1:
The support elements are made dynamically adjustable along the threaded shaft, allowing their distance to be changed according to the workpiece diameter. This dynamic feature adds minimal structural complexity while significantly enhancing adaptability, enabling the apparatus to maintain precise cutting alignment across various diameters.
Solution Approach 2:
The threaded shaft mechanism replaces complex multi-component adjustment systems with a simple threaded adjustment principle. This substitution maintains structural simplicity while enabling easy adjustment of support element positions to adapt to different workpiece diameters.
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 apparatus allows for precise, straight cutting and beveling of pipes of all diameters, including large and thin-walled ones, with improved stability and manageability, and the ability to machine plastic tubes, while maintaining a compact and functional design.
Implementation Method 1
the frame element (102) is provided, in a rotatable and axially immobile fashion, with a threaded shaft (110) whose first section (110a) has a right-handed thread and whose second section (110b) has a left-handed thread
Data Source
AI summary
An apparatus (100) for machining a tubular or round-bar type piece, wherein the apparatus comprises a frame element (102), a machining unit (104), as well as a threaded shaft (110), which is fitted to the frame element in a rotatable and axially immobile fashion and has a first section 110a) provided with a right-handed thread and a second section (110b) with a left-handed thread. The first section is provided with at least one first support element (106a) and the second section is provided with at least one second support element (106b), the mutual distance between the support elements being adjustable in response to rotating the threaded shaft, such that the support elements, for example wheels, are adapted to touch a workpiece and to support and guide the apparatus (100) in the process of machining the piece. At least one of the support elements, such as wheels (106a, 106b), is adapted to be capable of rotating relative to its axis in response to moving the apparatus along the surface of a workpiece.