NC Plasma Cutting Machine for Precise Groove and I-Beam Ends

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Solution Overview

Problem

Current methods for machining the ends of groove steel and I steel for civil air defense door leaves suffer from significant dimensional errors, poor surface quality, high labor intensity, and low production efficiency, with manual gas cutting and stamping forming methods being inefficient and costly.

Innovation Solution

A numerically-controlled plasma special-shaped cutting machine tool is developed, comprising a bracket, cross beam, feeding mechanism, clamping mechanism, gun head moving mechanism, material conveying system, material receiving device, dedusting system, electrical control system, and pneumatic system, which enables precise plasma cutting with automated material handling and processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If manual gas cutting machining is used, then labor flexibility is maintained, but machining accuracy and surface quality deteriorate

Engineering Contradiction:
Improvemachining accuracyVSAvoidmanual operation
Core Design Contradiction:
Manufacturing precisionVSExtent of automation

Solution Approach 1:

The patent replaces manual mechanical gas cutting with an automated plasma cutting system controlled by numerical control. The plasma cutting device is mounted on a movable carriage that can be precisely positioned along the steel beam, eliminating manual operation while achieving high machining accuracy and surface quality through automated control.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system incorporates automatic feeding mechanisms and programmable control that allow the machine to operate autonomously. The numerical control system executes pre-programmed cutting paths, and the automatic feeding mechanism supplies material continuously, reducing the need for manual intervention while maintaining high precision.

Inventive Principle:
Principle #25Self-service

2Productivity

If stamping forming with special dies is used, then production efficiency improves, but manufacturing cost and device complexity increase

Engineering Contradiction:
Improveproduction efficiencyVSAvoiddie manufacturing
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent employs a universal plasma cutting system that can handle various steel beam types (I-beams, channel beams, etc.) and cutting patterns through programmable control. Instead of requiring specialized dies for each beam type, the numerical control system adapts to different geometries by loading appropriate cutting paths, making the equipment multi-functional and eliminating the need for multiple specialized tools.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system changes operational parameters (cutting speed, plasma power, torch position) through numerical control programming rather than physical die changes. This allows the same cutting device to efficiently process different beam types and geometries by adjusting control parameters, avoiding the complexity of manufacturing and storing multiple specialized dies.

Inventive Principle:
Principle #35Parameter changes

3Productivity

If stamping forming with special dies is used, then production efficiency improves, but die wear and replacement frequency increase

Engineering Contradiction:
Improveproduction efficiencyVSAvoiddie durability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent replaces mechanical stamping dies with a plasma cutting process that uses a consumable torch electrode instead of solid dies. The plasma arc erodes the electrode gradually, but this consumable wear is far less severe than die wear, and the electrode can be easily replaced without the complex die replacement procedures required in stamping operations.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The plasma torch electrode is designed as a disposable or easily replaceable consumable component. Instead of investing in expensive, durable dies that require complex replacement procedures, the system uses inexpensive electrodes that are replaced frequently but simplify the overall system and maintain high productivity without the reliability issues of die wear.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

4Productivity

If manual gas cutting is used, then equipment simplicity is maintained, but labor intensity and production time increase

Engineering Contradiction:
Improvemachining efficiencyVSAvoidlabor intensity
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The system incorporates automatic feeding mechanisms and programmable control that allow the machine to operate autonomously. The numerical control system executes pre-programmed cutting paths, and the automatic feeding mechanism supplies material continuously, reducing the need for manual intervention while maintaining high precision.

Inventive Principle:
Principle #25Self-service

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 significantly improves machining accuracy and surface quality, reduces labor intensity, and enhances production efficiency by enabling automatic cutting with predetermined programs, ensuring precise dimensional precision and continuous operation.

Implementation Method 1

a gun head is mounted on the gun head moving mechanism to cut a workpiece, and the gun head is connected with a plasma generator

Methodology Applied
Scientific EffectPlasma arc: Plasma

Data Source

PatentUS11338384B2Numerical control plasma special-shaped cutting machine tool
Publication Date: 2022.05.24 BEIJING JINSUO HENGDUN PROTECTION EQUIP CO LTD
  • US11338384B2 patent drawing
  • US11338384B2 patent drawing
  • US11338384B2 patent drawing

AI summary

The present disclosure discloses a numerically-controlled plasma special-shaped cutting machine tool including a bracket, a cross beam, a feeding mechanism, a clamping mechanism, a gun head moving mechanism, a material conveying system, a material receiving device, a dedusting system, an electrical control system, and an outer cover. The present disclosure adopts plasma cutting, and the surface quality is obviously improved. Material conveying and cutting are performed by a predetermined program programmed in advance, and the dimensional precision of the machining is well ensured. Workers only need to place a workpiece material on the material conveying system, and the machine tool can perform automatic cutting. The labor intensity of the workers is greatly reduced, the cutting is continuously performed, and the machining efficiency is remarkably improved.