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Efficient Processing of Lumber Slabs: A Hydraulic and Mechanical System Overview

This document outlines the design and specifications of a hydraulic and mechanical system for processing slabs of lumber produced as byproducts from log milling. The system includes hydraulic drive units and a portable setup capable of handling slabs measuring up to 20 inches wide and 16 feet long. It features manual loading, adjustable conveyors, and integrated safety sensors. Key components like the conveyor motor and saw mechanism are detailed with a focus on operational efficiency and hydraulic specifications, making it ideal for transforming leftover slabs into usable firewood.

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Efficient Processing of Lumber Slabs: A Hydraulic and Mechanical System Overview

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Presentation Transcript

  1. Slab Mill Rollin Bicskei and Travis Haley

  2. Objectives • Background • Mechanical • Specifications, System Diagram, Conveyor Calculations, CAD • Hydraulic • Specifications, Schematic • Electrical • System Diagram, State Diagrams

  3. Background Slabs Lumber After a log is processed for lumber, slabs unfit for standard use are left over. These slabs can be processed into firewood however.

  4. Mechanical Specifications • PTO shaft driven, 550rpm, 34hp • Hydraulically powered drive units • 12-24” cuts off of 16’ slabs • Maximum width of slabs 20” • Manually loaded slabs • Portable, most likely on a trailer

  5. System Diagram Wood Slabs Saw Blade Clamp 5&6 2&8 1 4&7 9 Conveyor Conveyor 3 Adjustable Stop Gap between conveyors Operator

  6. Conveyor Motor Torque • F=µ*W; .6*3292N • F=1975.2N • T=F*R; 1975N*.051m • T=100 N-m=73.8 ft-lb

  7. Conveyor

  8. Chain Saw

  9. Mechanical Stop

  10. Hydraulic Specifications • 1500psi system pressure • 15gpm system volume flow rate

  11. Hydraulic System Schematic

  12. Electrical System Diagram PLC Mechanical Stop Pos. Sensors Slab Fully Advanced Sensor Clamp Pos. Sensors Clamp Cylinder Valve Saw Vert. Pos. Sensors Conveyor Motor Valve Chainsaw Cylinder Valve Sensors (Input) Mechanisms (Output) Chainsaw Motor Valve Mech. Stop Cylinder Valve

  13. Mechanical Stop State Diagram

  14. Conveyor State Diagram

  15. Clamp State Diagram

  16. Saw System Diagram

  17. Questions ?

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