Tiltable Sawmill Carriage for Angled Cutting
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Solution Overview
Problem
Existing sawmills with fixed horizontal blade orientations can only make flat cuts, limiting the ability to produce angled or tapered cuts without additional costly and complex jigs.
Innovation Solution
A sawmill assembly with a tilting device that allows the carriage and band saw blade to be adjusted to angles between 0 and 10 degrees relative to the horizontal plane, enabling the cutting of tapered pieces such as lap siding boards and roof shingles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed horizontal blade orientation is used, then the sawmill structure remains simple and cost-effective, but the ability to produce angled or tapered cuts is limited
Solution Approach 1:
The patent applies the dynamics principle by making the carriage tiltable through a tilting device that allows adjustment between horizontal and angled positions. The carriage can be tilted to angles between 0 and 10 degrees relative to the horizontal plane, enabling the blade to perform both flat cuts and angled/tapered cuts. This dynamic adjustment capability resolves the contradiction by providing cutting angle versatility without requiring completely separate sawmill configurations.
2Adaptability or versatility
If additional jigs are added to enable angled cuts, then cutting versatility improves, but cost and device complexity increase
Solution Approach 1:
The patent merges the function of angled cutting into the carriage itself through the tilting device, eliminating the need for separate jigs. The tilting device is integrated with the carriage structure, allowing the carriage to perform both its original horizontal cutting function and the additional angled cutting function. This consolidation resolves the contradiction by providing cutting versatility without adding separate jig components.
Solution Approach 2:
The carriage is designed with multi-functionality through the tilting device, enabling it to perform both flat cuts and angled/tapered cuts. The same carriage structure that originally supported horizontal blade movement now also supports angular positioning, making it a universal component that handles multiple cutting operations. This multi-functionality resolves the contradiction by eliminating the need for separate jigs while maintaining cutting versatility.
3Adaptability or versatility
If jigs are frequently installed and removed for different cutting operations, then cutting versatility is maintained, but operational efficiency decreases
Solution Approach 1:
The tilting device enables dynamic adjustment of the carriage angle without requiring installation or removal of separate components. The carriage can be tilted to the required angle and locked in position, allowing operators to switch between flat and angled cuts by simply adjusting the tilting device rather than installing different jigs. This dynamic adjustment capability resolves the contradiction by maintaining cutting versatility while significantly improving operational efficiency.
Data Source
AI summary
A sawmill assembly comprising a bed, a carriage and a tilting device. The bed has a pair of substantially parallel rails that define a first plane, a first axis perpendicular to the first plane, and a second plane perpendicular to both the first plane and a longitudinal axis of the rails. The carriage is movably supported along the rails. The tilting device allows a user to adjust a tilt angle of the carriage in the second plane, relative to the first axis. Also disclosed are methods of adjusting a blade angle of the sawmill assembly, and methods of cutting a tapered piece from a workpiece material.