Mechanical Design, Machine Design.

CNC MACHINE

The primary goal was to design a CNC capable of accommodating a Dremel, as if this tool works on the machine, practically any other tool could also be compatible.
In our group task we show how we made this machine from scratch and the contribution we all made to it.

My contribution to group work

For this week I have to cut the 15 mm MDF with the CNC cutter.

CNC Shop Pro 1325

Specification	Details
Working Area	1220 x 2440 mm (or customizable area)
Z-Axis Working Area	200 mm
Cutting Motor	Variable frequency spindle motor
Cutting Motor Power	6 Hp (4.5 kW) - Max 24,000 rpm
Tool Change	Manual - ER25 Collet (5/8” max. shaft diameter)
Cooling	Water cooling, chiller included
Drive System	Rack and pinion (X/Y axes), ball screw (Z axis) with high-torque/precision servomotors
Real Positioning Accuracy	+/- 0.15 mm
Max Head Travel Speed	35,000 mm/min
Material Clamping System	Clamps (included) / Optional Pressure Rollers and/or Vacuum Pump
Vacuum Pump	Optional (10 Hp turbine type)
Dust Collector	Included 2 Hp (dual bag)
Software	V-Carve Pro* original license for 2D + 3D design, compatible with DXF, DWG, EPS, AI, and other formats
Machine Weight	Approx. 800 kg
Electrical Requirements	220V / 2 phases / 20 amps
Standard Warranty	2 years / 1 year on accessories
Warranty Extension	Available (up to an additional 3 years)

The CNC Shop Pro 1325 is a robust and powerful machine with industrial capacity. With a 6 Hp spindle motor capable of reaching up to 24,000 RPM, it offers a maximum cutting speed of 35,000 mm/min and an accuracy of +/- 0.15 mm, allowing detailed and vibration-free results.
Its work area is 1220 x 2440 mm, adaptable to different projects, and it has advanced clamping that includes clamps, pneumatic rollers and the option of a 10 Hp vacuum pump with four suction zones, guaranteeing the stability of materials such as ABS, aluminum, wood, melamine, PVC, among others.
This CNC is designed to operate continuously, 24/7, with an integrated space-saving cabinet.

cutting the pieces

In order to create the support for the machine, my colleague Rául he gave me the file in G code, so I could cut the wood and have the structure of the CNC

Download Estructure solidWorks.SLDPRT Download .Gcode

The Power of MDF and White Glue

Material	Advantages	Recommended Adhesive
MDF	Smooth surface, easy to work with, good adhesion	PVA (white glue)

When i finish cut the MDF, assemble all the pieces and put white glue on each assembly so that it would not be unstable when cutting.

Benefits of Bearings in CNC Machines

Reduced Friction: Bearings minimize friction between moving parts such as shafts and guides, allowing the Dremel head to move smoothly. This is essential for achieving precise cuts and preventing excessive wear on parts.
Precision Movement: Bearings help maintain the cutting head's trajectory as stable as possible. This is especially important in CNC where even small deviations can affect the quality of the work. With good quality bearings, precise positioning control is achieved on each axis (X, Y, and Z).
Machine Durability: By reducing friction and wear, bearings help extend the life of the machine. Without them, wear on components would be greater, requiring frequent part replacement or adjustment.
Load Support: Bearings help support the weight and load of the cutting head (Dremel) as it moves along the axes. This allows the CNC machine to handle intensive work without compromising stability or precision.
Reduced Vibration: Bearings absorb and reduce vibrations generated during cutting, improving the quality of the cutting surface and preventing errors in the work. Less vibration also reduces noise and helps prevent damage to the material or the machine itself.

Details

I also had to make some adjustments to the stretcher, specifically to hide the screws that were sticking out. This meant disassembling the entire assembly and rebuilding it from scratch. I had to refit the washers and bracket in 3D to make sure the screws were as hidden as possible, thus giving a cleaner, more polished look to the stretcher.

Designing a presentation for CNC machines in the software CANVA

Why i use CANVA?

Canva has revolutionized the way we create presentations and visual content. Its intuitive interface, coupled with a rich library of templates, images, and fonts, empowers users to design visually appealing materials with ease. Whether you're a seasoned designer or a novice, Canva offers a streamlined experience that eliminates the need for complex design software. Moreover, its real-time collaboration features enable seamless teamwork, making it an ideal choice for projects that require input from multiple individuals. By integrating seamlessly with popular cloud storage platforms like Google Drive and Dropbox, Canva simplifies the process of sharing and exporting your designs. In essence, Canva has democratized graphic design, making it accessible to everyone and empowering individuals and teams to create professional-quality visuals with minimal effort.

Download design CNC in Canva.jpg

Our CNC Cutter in Action

This was the result of our CNC cutter...Which by the way works quite well

Download Logo Fab Academy.Gcode