Rollin Bicskei and Travis Haley

Slab Mill

Objectives

BackgroundMechanical

– Specifications, System Diagram, CAD

Hydraulic– Specifications, Schematic

Electrical– System Diagram, State Diagrams

Background

LumberSlabs

After a log is processed for lumber, slabs unfit for standard use areleft over. These slabs can be processed into firewood however.

Mechanical Specifications

PTO shaft driven, 550rpm, 34hpHydraulically powered drive units12-24” cuts off of 16’ slabsMaximum width of slabs 20”Manually loaded slabs

System Diagram

Conveyor

Adjustable Stop

Saw Blade

Gap between conveyors

Conveyor

Operator

Wood Slabs

Clamp

1

3

2&84&7

5&6

9

Conveyor

Chain Saw

Mechanical Stop

Mechanical Stop #2

latch

Front View Side View

Hydraulic Specifications

1500psi system pressure15gpm system volume flow rate

Hydraulic System Schematic

Electrical System Diagram

DL06 PLC

Slab Fully Advanced Sensor

Mechanical Stop Pos. Sensors

Clamp Pos. Sensors

Saw Vert. Pos. Sensors

Conveyor Motor Valve

Clamp Cylinder Valve

Chainsaw Motor Valve

Chainsaw Cylinder Valve

Mech. Stop Cylinder Valve

Sensors (Input)

Mechanisms(Output)

PLC Wiring Schematic

PLC Input Wiring

PLC Ladder Logic

Mechanical Stop State Diagram

Conveyor State Diagram

Clamp State Diagram

Saw System Diagram

Budget

Conveyors: $1500 PTO driven hydraulic pump: $330 Hydraulic chain saw: $1000 Three 1 ½ inch hydraulic cylinders: $1050 Conveyor drive motor: $280 Five three position, four port solenoid actuated valves: $2000 Reservoir tank: $500 Hydraulic system filter: $60

TOTAL: $6700

Questions

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