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3-Axis CNC Router

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Muhammad Nasr

on 8 August 2013

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Transcript of 3-Axis CNC Router

Bsc Graduation Project
3-Axis CNC Router Machine

Supervised by:
Professor Dr. Dessouky El soaly
Assistant Professor Dr. Manar Eltantawie

Presented By:
Ali Labib 32008237
Mohamad Ayman 32008304
Mohamad Nada 32008363
Mohamad Nasr 32008365
Mostafa Younes 32008401

Bsc Graduation Project
3-Axis CNC Router Machine

What is a CNC Router?
History
NC or simply Numerical Control was developed in the late 1940s and early 1950s by John t. Parsons.
Mid-1970: first microprocessor (Intel 8080)
End of the 1970s: first 5 axis CNC in wood working.
Who Needs a CNC Machine?
Stress Analysis
Linear Motion
Lead Screw converts rotation to linear motion
Mohr's Circle used as combined equation for bending moment & torsion.
Force analysis: forces are subjected on lead screw.
Bearing
Ball Bearing
Thrust Force
Radial Force
Linear Bearing
Cutting Force
Cutting Tool
Cutting Speed
Spindle Torque
Cutting Force
Displacement
Safety of Factor
Von mises Stress
Stepper motors move a known interval for each pulse of power. These pulses of power are provided by a stepper driver and are referred to as a step.
Stepper Motor
Solid State Relay
Control Unit
Breakout Board (Compatible with MACH3)
2D PROTEUS Software
Dirver Stepper Motor
Calculating Steps per unit
Screw pitch = 6 mm
CNC Router System
CAD/CAM software
Sprut CAM
Computer Aided Design (CAD)
Computer Aided Manufacturing (CAM)
• To import a geometrical model.
• To define a model of the produced part.
• To create a sequence of machining operations.
• To generate an NC program.

Mach 3 Controller Software
Motor steps per revs = 200 step / revs
Mach3 steps per motor revolution = 20000 steps / revs
Screw revs per unit = 1 ÷ 6 = 1/6 revs/mm
Mach3 steps per unit = Mach3 steps per rev × Motor revs per unit
Mach3 steps per unit = 20000 × 1/6
= 3333.33333333333 steps/mm
CNC Main Parts
Chassis.
Mechanical Parts
Lead Screw for X, Y, Z
Gantry Assembly
Machine Specification
CNC bed.
Gantry.
Holding Block.
Sliding Shaft (Guide)
Bearing House
Linear Bearing
T Nut for X, Y, Z
Round Coubling
Holding Block Assembly
Machine Assembly
Full transcript