Orbital Pipe Cutting with Selective Tool Engagement Control
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Solution Overview
Problem
Existing orbital cutting apparatuses are limited in their ability to freely and selectively control the movement of cutting tools, restricting their ability to process various shapes and thick pipe materials, leading to inefficiencies and tool damage due to fixed cutting and chamfering operations.
Innovation Solution
An orbital cutting apparatus that utilizes a rotational speed ratio to control the movement of cutting tools, allowing for forward and backward movement and axial direction control, enabling flexible processing of shapes and thick pipes by synchronizing the spindle rotating unit with a relative movement unit and using connection gears for precise tool activation and deactivation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed cutting tool configuration is used in the orbital cutting apparatus, then the structure is simple and easy to manufacture, but the apparatus cannot freely control the movement of cutting tools, limiting processing flexibility and requiring frequent tool replacement
Solution Approach 1:
The patent applies dynamics by making the cutting tool configuration changeable during operation. The tool holder is designed to allow tools to be moved, activated, or deactivated at different positions along the orbital path through a control mechanism that adjusts tool engagement with the workpiece, enabling flexible control without permanent fixed mounting
Solution Approach 2:
The cutting tool system is segmented into multiple independently controllable tool units that can be selectively activated or deactivated. Each tool can be controlled separately to perform different cutting functions at different positions, allowing the system to adapt to various processing requirements without requiring complete tool replacement
2Productivity
If the cutting tool continuously digs into the workpiece during rotation, then cutting operation is maintained, but tool wear increases and tool damage occurs when the tool becomes dull or damaged
Solution Approach 1:
The patent implements periodic action by enabling the cutting tool to be selectively activated and deactivated during the rotational cycle. The tool can be engaged with the workpiece only during specific portions of the rotation when cutting is required, and retracted or deactivated when not needed, creating a periodic on-off cutting pattern that reduces continuous wear
Solution Approach 2:
The system incorporates feedback mechanisms that monitor tool condition and workpiece state during cutting operations. Based on this feedback, the control system can detect when a tool becomes dull or damaged and automatically adjust tool activation or trigger tool replacement, preventing continued operation with degraded tools that would cause workpiece damage
3Adaptability or versatility
If the apparatus is equipped with both cutting tool and chamfering tool, then multiple operations can be performed, but the apparatus cannot arbitrarily adjust tool movements to process various shapes or thick pipes
Solution Approach 1:
The patent applies dynamics by enabling arbitrary adjustment of tool positions and movements during operation. The tool holder and control mechanism allow tools to be moved to different radial positions and engaged or disengaged at different points in the rotational cycle, enabling the same apparatus to process various shapes and thicknesses without mechanical reconfiguration
Solution Approach 2:
The orbital cutting apparatus is designed with universal functionality to perform multiple operations including cutting, chamfering, and shaping using the same tool holder and control system. By selectively activating different tools at different positions during rotation, a single apparatus can handle diverse processing requirements for various pipe shapes and thicknesses
Data Source
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AI summary
Disclosed is an orbital cutting apparatus that is capable of freely and selectively controlling forward and backward movement of a plurality of cutting tools, allowing the cutting tools to move forward and backward and to move in an axial direction of a material to be cut so as to enable processing of various shapes as well as cutting and chamfering, and is capable of simultaneously carrying out cutting and chamfering operations for a pipe material or a heavy pipe having a thickness of dozens of mm or more. The orbital cutting apparatus according to the present disclosure includes: a spindle rotating unit coupled to one surface of a main body so as to rotate (C axis); a plurality of tool units coupled to reciprocate (X axis) toward a center of the spindle rotating unit on a front surface of the spindle rotating unit, thereby cutting a clamped material in an orbital manner; a relative movement unit coupled to the main body on an opposite side to the spindle rotating unit to be rotatable in synchronization with the spindle rotating unit, and configured to transmit a power to the plurality of tool units so as to cause the tool units to reciprocate; connection gears each formed at an end of each of driving shafts of the tool units so as to be selectively engaged with the relative movement unit so as to receive a power of the relative movement unit; an operation unit configured to cause a selected connection gear to be engaged with or be disengaged from the relative movement unit; and a control unit configured to control the movements of the spindle rotating unit and the relative movement unit.