Switched Reluctance Motor Bench Pipe Threading Machine
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Solution Overview
Problem
Existing bench pipe threading machines face issues with large motor size and weight, as well as noise, which affect their usability and efficiency in processing external pipe threads.
Innovation Solution
The bench pipe threading machine incorporates a spindle assembly, die head assembly, cutter assembly, reamer assembly, and a lithium battery assembly, powered by a switched reluctance motor, which includes a control panel for overload and overcurrent protection, and features a lubricating and cooling system for efficient thread processing, with the motor being either plug-connected or battery-powered.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If an induction motor is used as the power source, then the rated power requirement is met, but the size and weight become too large making the device bulky and heavy
Solution Approach 1:
The patent replaces the traditional induction motor with a switched reluctance motor that uses electromagnetic field control instead of mechanical rotor structures. This substitution allows achieving the same rated power output while significantly reducing motor size and weight, directly resolving the contradiction between power requirement and motor dimensions.
2Weight of moving object
If a universal motor is used to reduce size and weight, then the rated power is met, but much noise is generated leading to bad user experience
Solution Approach 1:
The patent replaces the universal motor with a switched reluctance motor that operates with reduced mechanical vibrations and electromagnetic noise. The switched reluctance motor's design eliminates the commutator and brushes found in universal motors, which are major noise sources, thereby maintaining compact size while significantly reducing noise generation.
3Manufacturing precision
If traditional threading machines are used, then pipe thread processing is achieved, but working efficiency is insufficient
Solution Approach 1:
The patent implements a dynamic carriage mechanism that allows rapid positioning and adjustment of the die head assembly along the pipe length. The carriage can be quickly moved to different positions and locked in place, enabling continuous thread processing without manual repositioning, thus significantly improving working efficiency while maintaining thread processing quality.
Solution Approach 2:
The patent incorporates preliminary positioning features in the carriage mechanism and die head assembly that allow pre-setting of thread parameters and automatic alignment before processing begins. This preliminary preparation reduces setup time and enables faster production cycles while ensuring consistent thread quality.
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 machine achieves a significant increase in working efficiency, with output rotational speed of 54 rpm, providing at least 150% more efficiency than other devices, and operates with reduced noise due to deep groove ball bearings and a smooth spindle assembly, while being compact and lightweight.
Implementation Method 1
The bench pipe threading machine is driven by a switched reluctance motor
Implementation Method 2
operates with reduced noise due to deep groove ball bearings and a smooth spindle assembly
Implementation Method 3
features a lubricating and cooling system for efficient thread processing
Data Source
AI summary
A bench pipe threading machine and a threading method are provided. The bench pipe threading machine includes a spindle assembly, a die head assembly, a cutter assembly, a reamer assembly, a lifting handle assembly, and a frame assembly. The spindle assembly, the die head assembly, the cutter assembly, the reamer assembly, and the lifting handle assembly are mounted on the frame assembly. The die head assembly, the cutter assembly, and the reamer assembly are respectively matched with the spindle assembly. The frame assembly includes a frame mechanism and a carriage mechanism that is mounted on the frame mechanism. A transmission mechanism is mounted in the frame mechanism and connected to the spindle assembly. The spindle assembly and the lifting handle assembly are mounted on the frame mechanism. The die head assembly, the cutter assembly, and the reamer assembly are mounted on the carriage mechanism.