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Homework answers / question archive / You basically have to write a report and prepare a power point presentation on CNC router

You basically have to write a report and prepare a power point presentation on CNC router

Electrical Engineering

You basically have to write a report and prepare a power point presentation on CNC router.

The screenshots I have sent are basically about the thing which I will make and you have to write about them in the report.

COMPONENT SELECTION –

              -Structural materials 

                             Aluminum Extrusion 

                             Steel Plates 

                             Wood top (spoil board) 

              -Linear guide components 

Linear rails / bearing blocks 

V-Wheel assembly with Eccentric nuts 

              -Linear Drive Components 

                             Rack Gear / Pinion (X,Y) - 3D printed 

                             Lead screw (Z) with anti-backlash nut 

                             Stepper Motors 

 

                             Motor coupler    

              -Spindle 

                             Milwaukee Router with ¼” and 1/8” collet for tooling 

              -Electronics 

                             Shielded wire  

                             Limit switches 

                             Power Supply Mean Well LRS-350-24 

                             Arduino UNO R3 W/ USB Cable 

                             CNC Shield V3 

                             4x DRV8825 stepper motor drivers 

                             Physical controller (computer)                  

 

SOFTWARE 

              - What code can we modify inside of the GRBL software before sending it to the 

- GRBL-Program machine limits with hard wired limit switches and programmed soft limits 

              -Program the tool touches off plate 

              -What Arduino program are we using to program the Arduino 

              -What GRBL software will we use from GitHub? 

                             Selection of a suitable control algorithm. 

              -GRBL code modification for a 4th limit switch for the Y2 motor. Y1 and Y2 would “ZERO” from         their own limit switches 

              ???-Writing the code/software. 

              -User interface (Universal G-Code Sender/Laptop) 

  

MECHANICAL 

              -RACK GEAR AND PINION 

                             Number of teeth on pinion 

                             Torque/Force applied to the pinion and rack gear. 

                             Look into material strength of the 3D printing material. (FEA?) 

                             Diametric pitch of pinion and pitch line of rack gear 

              -LINEAR MOTION 

Friction between the V-wheels and the aluminum extrusion 

                             Friction from the linear rails / bearing blocks  

                             Friction from the anti-backlash nut Lead screw  

                             linear rails / bearing load capacity             

                             Selection and sizing of a suitable actuator (identify stroke, force, and  

torque, speed, etc) 

Identify resolution, accuracy, and precision. 

                              

ELECTRONICS 

              -Motor load calculations  

              Motor / Driver Amp calculations 

              -Power supply calculations ( Amps, Vin, Vout) 

              Power requirements for the Arduino board / CNC Sheild 

              E-Stop safety system 

              Wire gauge calculation 

              Fan control to Arduino? 

              -Wiring schematic / plan? 

              -Feedback Devices and Flowchart  

                             Selection of suitable feedback devices (including their datasheets) 

                             Limit switches and touch off plate 

              -Flowchart of operation of the system 

              -Physical controller (computer) 

              - Wire routing diagram 

              -Detailed electronic design. 
 

               

 

               

SPECIFICATIONS 

              Foot print 

Travel limits X,Y and Z 

              Resolution: X,Y, and Z (smallest stepper distance) 

              Machine accuracy X,Y, and Z 

              Maximum travel speed (in/min or mm/min) 

              Spindle motor speeds and torque 

              Acceleration of each axes (G force?) 

              Power Supply  

 

 

- PRESENTATION/DEMENSTRAION 

              Design layout on the machine and the machine follows the design pattern once we send the            program to the machine with the controller (Universal G-code Sender) 

              PowerPoint 

 

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