Master Link Machining Using Segmented Wire Cutting and Milling
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Solution Overview
Problem
The conventional machining method for master links in endless track vehicles is slow and expensive due to the high cost and time required for secondary wire cutting, which complicates assembly and increases production costs.
Innovation Solution
A method combining wire cutting and mechanical machining using a machining center to quickly machine interference portions, employing a clamping jig for precise adjustment and using ball end mills, flat end mills, and chamfer end mills to reduce machining time and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If secondary wire cutting is performed to secure a gap between the master link and the corresponding assembly portion, then the assembly gap is secured, but the machining time increases significantly
Solution Approach 1:
The patent applies preliminary action by performing the first wire cutting to create the basic shape and dimensions of the master link before final assembly. This preliminary machining establishes the foundation for subsequent operations, allowing the second wire cutting to focus only on creating the precise assembly gap rather than machining the entire component from scratch.
Solution Approach 2:
The patent segments the machining process into two distinct stages: first wire cutting for bulk material removal and basic geometry creation, and second wire cutting for precise gap formation. This segmentation allows each machining operation to be optimized for its specific purpose, reducing overall machining time while maintaining precision requirements.
2Manufacturing precision
If secondary wire cutting is performed to secure a gap between the master link and the corresponding assembly portion, then the assembly gap is secured, but the production cost increases
Solution Approach 1:
The patent applies preliminary action by performing the first wire cutting to create the basic shape and dimensions of the master link before final assembly. This preliminary machining establishes the foundation for subsequent operations, allowing the second wire cutting to focus only on creating the precise assembly gap rather than machining the entire component from scratch.
Solution Approach 2:
The patent segments the machining process into two distinct stages: first wire cutting for bulk material removal and basic geometry creation, and second wire cutting for precise gap formation. This segmentation allows each machining operation to be optimized for its specific purpose, reducing overall machining time while maintaining precision requirements.
3Strength
If the master link is manufactured as an integral type requiring separation of front and rear links, then the structural strength is improved, but the machining complexity increases
Solution Approach 1:
The patent segments the machining process into two distinct stages: first wire cutting for bulk material removal and basic geometry creation, and second wire cutting for precise gap formation. This segmentation allows each machining operation to be optimized for its specific purpose, reducing overall machining time while maintaining precision requirements.
Solution Approach 2:
The patent applies preliminary action by performing the first wire cutting to create the basic shape and dimensions of the master link before final assembly. This preliminary machining establishes the foundation for subsequent operations, allowing the second wire cutting to focus only on creating the precise assembly gap rather than machining the entire component from scratch.
Data Source
AI summary
The present invention relates to a method of machining a master link disposed at a distal end of a chain and constituting a part of a track chain link of a lower driving device used in an endless track vehicle (a bulldozer, an excavator). According to the present invention, it is possible to rapidly perform the machining work by secondarily adjusting the horizontal degree and the vertical degree of the integrally manufactured front and rear master link in a short time after primarily wire cutting it by using an exclusive clamping jig for the primary wire cut and an exclusive clamping jig for the secondary machining center, and machine the interference portion generated at the time of the assembly of the master link with the corresponding product, by using the machining center provided with the ball end mill, the flat end mill, and the chamfer end mill, in a short time, thereby achieving reduction of the machining time, maintaining the uniform quality and reduction of the production expense.