Saw Riving Knife Locking Mechanism With Bias Notch

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Solution Overview

Problem

Conventional saw machines with screw bolts for locking riving knives complicate the dismounting process and do not provide a satisfactory mechanism for positioning the riving knife, making it difficult to accommodate different working conditions.

Innovation Solution

A saw machine riving knife adjustment mechanism featuring a locating frame with a long slot, a riving knife with a longitudinal slot and notches, and a locking member biased by a biasing member, allowing for positive positioning and easy dismounting by overcoming the biasing force to move the locking member away from the notch.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If screw bolts are used to lock the riving knife, then the riving knife can be securely fixed to the saw machine, but the dismounting process becomes complicated and time-consuming

Engineering Contradiction:
Improvesecuring of riving knifeVSAvoiddismounting process
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The locking mechanism is segmented into a locking member with a locking ball and a locking hole with positioning notches. The locking ball can engage with different notches to provide multiple locking positions, while the segmented design allows easy engagement and disengagement by simply moving the locking ball out of the locking hole, eliminating the need to loosen screw bolts.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The locking member is designed to be movable along the longitudinal slot of the riving knife. The spring biases the locking member to engage with the locking hole, providing automatic locking. For dismounting, the locking member can be dynamically moved along the slot to disengage from the locking hole, enabling quick removal without complex operations.

Inventive Principle:
Principle #15Dynamics

2Ease of manufacture

If conventional mounting designs are used, then the riving knife can be mounted, but the positioning accuracy is insufficient for different working conditions

Engineering Contradiction:
Improvemounting of riving knifeVSAvoidpositioning accuracy
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The locking hole is pre-formed with multiple positioning notches at specific locations along its length. These notches are prepared in advance to correspond to different working conditions. When the locking member engages with a specific notch, it automatically positions the riving knife at the correct location for the intended operation, ensuring positioning accuracy without requiring additional adjustment steps.

Inventive Principle:
Principle #10Preliminary action

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

Enables accurate and easy positioning and dismounting of the riving knife from the saw machine, simplifying the process and improving operational efficiency.

Implementation Method 1

The locking member is biased by the first biasing member into engagement with one notch of the riving knife

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

an operator simply needs to overcome the biasing force applied by the biasing member to the locking member, and allow the locking member be moved away from the notch of the riving knife

Methodology Applied
Scientific EffectForce: Force

Data Source

PatentUS8893601B2Saw machine riving knife adjustment mechanism
Publication Date: 2014.11.25 REXON IND CORP LTD
  • US8893601B2 patent drawing
  • US8893601B2 patent drawing
  • US8893601B2 patent drawing

AI summary

A saw machine riving knife adjustment mechanism includes a locating frame, which has a slot, a riving knife, which has a longitudinal slot with at least one notch formed along one side of the longitudinal slot, and which is detachably mounted on the locating frame, a biasing member, which is mounted on the locating frame, and a locking member, which is inserted through the longitudinal slot of the riving knife and the slot of the locating frame. The locking member is biased by the biasing member to a locking position where the locking member is engaged with the at least one notch to lock the riving knife in position.