Circular Saw Movable Guide Set Suppresses Blade Runout

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Solution Overview

Problem

Conventional circular saw machines face difficulties in suppressing cutting-bending of the circular saw blade during processing, leading to reduced accuracy on workpieces of varying widths due to insufficient rigidity in the cutting region.

Innovation Solution

A circular saw machine with a movable saw blade guide set that moves in coordination with the processing head's direction, combined with fixed guide sets, to maintain precise alignment and reduce runout, featuring a biasing mechanism and actuator for relative movement, ensuring the saw blade's stability and accuracy regardless of workpiece width.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the interval of the pair of fixed saw blade guide sets is set according to the maximum width of the workpiece, then the guide sets can accommodate workpieces of various widths, but the distance between the guide sets and the cutting region becomes large for narrow workpieces, causing insufficient rigidity and cutting-bending of the saw blade

Engineering Contradiction:
Improveadaptability to workpiece widthVSAvoidprocessing accuracy
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent introduces a movable saw blade guide set that can dynamically adjust its position in the cutting direction based on the workpiece width. This dynamic adjustment allows the guide set to maintain optimal distance from the cutting region regardless of workpiece size, thereby preserving both adaptability and processing accuracy

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The guide set system is segmented into fixed and movable components. The fixed guide sets provide stable support on both sides of the cutting region, while the movable guide set provides additional support on the diameter direction inner side and can be independently positioned to accommodate different workpiece widths, resolving the contradiction between versatility and precision

Inventive Principle:
Principle #1Segmentation

2Strength

If the movable saw blade guide set is positioned close to the cutting region for narrow workpieces, then the rigidity of the cutting region is improved, but the guide set may interfere with the cutting process for wider workpieces

Engineering Contradiction:
Improverigidity of cutting regionVSAvoidcompatibility with various workpiece widths
Core Design Contradiction:
StrengthVSAdaptability or versatility

Solution Approach 1:

The movable saw blade guide set is equipped with a driving mechanism that enables it to move in the cutting direction according to the specific workpiece width. This dynamic positioning capability allows the guide set to be close to the cutting region for narrow workpieces (providing rigidity) while moving away for wider workpieces (avoiding interference), thus resolving the contradiction between strength and adaptability

Inventive Principle:
Principle #15Dynamics

3Manufacturing precision

If additional guide sets are added to improve saw blade stability, then the processing accuracy is enhanced, but the device complexity increases

Engineering Contradiction:
Improveprocessing accuracyVSAvoidnumber of guide sets
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The guide set system is divided into fixed and movable functional segments. The fixed guide sets provide stable support on both sides of the cutting region, while the movable guide set provides additional support on the diameter direction inner side. This segmentation allows the system to achieve enhanced stability through multiple guide sets while maintaining manageable complexity through clear functional differentiation

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The movable saw blade guide set serves multiple functions: it provides additional support to prevent cutting-bending, accommodates narrow workpieces by moving closer to the cutting region, and avoids interference with wider workpieces by moving away. This multi-functionality justifies the addition of the guide set by demonstrating its versatile contribution to processing accuracy

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

Data Source

PatentUS10875107B2Circular saw machine capable of suppressing runout of circular saw blade
Publication Date: 2020.12.29 AMADA HOLDINGS CO LTD
  • US10875107B2 patent drawing
  • US10875107B2 patent drawing
  • US10875107B2 patent drawing

AI summary

A circular saw machine capable of suppressing a cutting-bending of a circular saw blade during cutting, and improving processing accuracy for a cutting surface of a workpiece, regardless of a size of a width of the workpiece. A circular saw machine has: a processing head capable of moving in a cutting direction and its opposite direction and having a circular saw blade capable of rotating; and a movable saw blade guide set provided to be movable in the cutting direction and the opposite direction on the processing head, for guiding to pinch a body part of the circular saw blade on a diameter direction inner side of a cutting region in the circular saw blade. The movable saw blade guide set is configured to move relatively with respect to the processing head in the opposite direction, in coordination with a movement in the cutting direction of said processing head.