PCB Isthmus Cutting Tool With Guide Rib Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Manual cutting of isthmuses in printed circuit boards is imprecise, time-consuming, and requires skill, while automated methods using CNC machines are complex and expensive due to the need for templates and precise dimensioning.
Innovation Solution
A tool comprising a base plate, spindle, and guide with a cutting tip that can be fixed to a rotating machine, allowing for precise cutting of isthmuses without templates or CNC machines, featuring an interchangeable guide rib for alignment with the slots of the PCBs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual cutting with ordinary cutting tools is used, then the operator can perform the cutting operation, but the cutting is imprecise, time-consuming, and requires skill to avoid damaging the PCBs
Solution Approach 1:
The patent introduces a template as an intermediary device between the manual cutting tool and the PCBs. The template reproduces the edges of the PCBs and guides the cutting tool along the isthmuses, ensuring precise cutting without requiring operator skill or damaging the PCBs. This mediator translates the complex task of precise manual cutting into a simple follow-the-template operation.
2Manufacturing precision
If a template is used to guide the cutting tool, then cutting precision is improved, but the making of the template adds additional complexity to the cutting process
Solution Approach 1:
The template is created by copying the exact geometry of the PCB edges and isthmus positions. This copy serves as a guide that simplifies the cutting process while maintaining precision. The copying principle allows the complex geometric relationships to be pre-established in the template, transferring this precision to the cutting operation without requiring complex real-time control.
3Device complexity
If a milling cutter on a CNC machine is used to avoid templates, then the template-making complexity is eliminated, but the process becomes expensive and complex due to the need for CNC machines and providing dimensions and coordinates
Solution Approach 1:
The patent employs a simple, inexpensive template that can be easily manufactured and discarded or reused as needed. This disposable or limited-life template approach replaces the need for expensive CNC machines and complex programming. The low cost of the template makes the overall process more economical despite the template needing periodic replacement.
4Device complexity
If manual cutting is used, then no special equipment is needed, but the process is time-consuming and requires operator skill
Solution Approach 1:
The template is prepared in advance with all the cutting paths and geometries pre-defined. This preliminary action transfers the complexity and time-consuming work to the template creation phase, which can be done once. During the actual cutting operation, the operator simply follows the pre-prepared template, dramatically increasing cutting speed and productivity without requiring special equipment.
Data Source
AI summary
A tool for cutting the isthmuses in slots of a plate comprising PCBs includes: a base plate, a spindle having a shank and a cutting tip, a spindle support fixed to the base plate and revolvingly supporting the spindle, a head fixed to the base plate and provided with a through hole wherein the shank of the spindle is disposed, a guide mounted on the head and provided with a through hole wherein the cutting tip of the spindle is disposed, in such manner that a portion of the cutting tip of the spindle protrudes from the guide, the guide having a guide rib disposed in alignment with the cutting tip of the spindle and suitable for being inserted into the holes of the plate comprising the PCBs to guide a relative movement of the plate comprising the PCBs with respect to the tool.