Circular Saw Machine Dual Clamping System for Variable Length Workpieces

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Solution Overview

Problem

Conventional circular saw machines struggle to securely clamp and saw workpieces of varying lengths, often resulting in damage due to the tilted holding mechanism, which causes long workpieces to come into contact with the saw disc again and get re-sawn.

Innovation Solution

The circular saw machine employs a dual clamping system with adjustable holding plates and a control system that includes detecting switches and sensors to ensure secure clamping and precise control of the sawing process, preventing re-sawing of completed workpieces by using first and second clamping devices and a holding plate with a flat or tilted face depending on workpiece length.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the top end of the outer holder is designed as a tilted face to support workpieces, then short workpieces can be supported, but long workpieces cannot be clamped securely and may contact the saw disc causing damage

Engineering Contradiction:

Improveability to support different workpiece lengthsVSAvoidclamping security for long workpieces

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The holding plate is designed to be movable relative to the outer holder, allowing it to adjust its position dynamically. For long workpieces, the holding plate moves to a position where its flat face provides adequate support length. For short workpieces, it moves to a position where the tilted face provides appropriate support, thus adapting to different workpiece lengths while maintaining secure clamping

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The holding plate can change its orientation parameter between a tilted face configuration and a flat face configuration. This parameter change allows the system to optimize the support surface geometry according to the workpiece length, ensuring both adaptability to different lengths and secure clamping for each case

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If the outer clamp device moves away from the saw disc to unclamp the sawed workpiece, then the workpiece is released, but vacuum suction from the saw disc may suck the workpiece

Engineering Contradiction:

Improveworkpiece release mechanismVSAvoidvacuum suction effect on released workpiece

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The holding plate provides continuous support to the sawed workpiece even after the outer clamp device moves away. This preliminary protective action prevents the workpiece from being subjected to the harmful vacuum suction effect by maintaining physical support and control until the workpiece is safely positioned

Inventive Principle:

Principle #9Preliminary anti-action

3Device complexity

If a single holding mechanism with tilted face is used, then the structure is simple, but long workpieces cannot be securely clamped

Engineering Contradiction:

Improveholding mechanism structureVSAvoidclamping effectiveness for various lengths

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The holding function is segmented between the outer holder (with tilted face) and the movable holding plate (with flat face). The outer holder provides initial support and positioning, while the holding plate provides additional support length for long workpieces. This segmentation allows each component to have a specialized function while working together to solve the clamping effectiveness problem across various workpiece lengths

Inventive Principle:

Principle #1Segmentation

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 allows for the secure sawing of workpieces of various lengths without re-sawing, ensuring accurate cutting and material preservation by preventing re-contact with the saw disc, and includes a protective mechanism to stop the machine if errors are detected, thus preventing damage.

Implementation Method 1

a detecting switch (82) for detecting a position of the holding plate (40)

Methodology Applied

Scientific EffectElectrical contact detection:

Implementation Method 2

a sensor (83) for detecting parameters of the workpiece (B)

Methodology Applied

Scientific EffectOptical or electromagnetic sensing:

Implementation Method 3

the sawed workpiece A1 being sucked by a vacuum suction from the saw disc 16

Methodology Applied

Scientific EffectVacuum suction: Suction

Implementation Method 4

a saw disc 16 saws the non-saw workpiece A into a sawed workpiece A1

Methodology Applied

Scientific EffectMechanical cutting: Abrasion

Data Source

PatentUS9908192B2Circular saw machine for sawing workpieces of various lengths

Publication Date: 2018.03.06 KENTAI MACHINERY

AI summary

A circular saw machine contains a first clamping device, a second clamping device, a holding plate, a feeding means, and a sawing device. The first clamping device includes a first clamp mount, a movable clamp block, and a first upper clamp block, the first clamp mount has a first fixing arm, a first holder, a placing portion and a first fixed clamp block. The second clamping device includes a second clamp mount, a second movable clamp block, and a second upper clamp block, the first clamp mount has a second clamp arm, a second holder, and a second fixed clamp block. The holding plate is secured on a top end of the second clamp arm. The feeding means is disposed on the first clamping device. The sawing device includes a saw disc.