Design CNC

The aim was to develop a cutting-engraver CNC

laser, CNC stands for computer numerical control, computer acts as the controller of the machine in wich is programmed through an interface following the instructions.

The need of productivity become a priority, besides accuracy and reduce drawbacks like: lack of skilled labor, lots of wastage, and non-expected results.

Initially the team got trained about the CNC programming for one month, the design is loaded to a computer wich is attached to the CNC laser, it changes the design into a special code(numerical)that controls the way the CNC operates.

The electronics consists of a separate power supplies for laser, motors and the Arduino which breaks input-output signals for the motion and laser control. The motion works through rubber conveyor belts that are linked by bearings to the motors that make them go on X and Y axis.

Finally it was decided to use wood for the base as it is economic and malleable.

Key Words— CNC Laser, G-CODE, Stepper Motor, Arduino, Driver A4988.

Step 1: Design

We opted for the design of a CNC by transmission by bands. The design was done in SolidWorks. The area designated for the working area was 32 x 28 cm, the base in this case are 4 pieces of wood 30 x 2 x 2 cm and in addition to the use of 4 smooth steel bars for movement; said bars have dimensions of 30 cm x .8 mm in diameter.

Step 2: Driver

Once the design with all the required specifications was made, the 4 bars of the base were ordered to be built. After this we started with the printing of the required 3D parts.
The test of the motors was carried out with the aid of the A4988 driver, but before this, the current of the same one as specified by the manufacturer was limited to avoid problems in both components, the formula to obtain this is:

ITripMAX = VREF / (8 × RS)

Where RS refers to the value of the resistors in S1 and S2, therefore, taking into account that the PAP motors are 0.4 A, the clearance would be this way:

VREF = 0.4 (8 × 0.1W) = 0.32 volts

When this value was reached, the potentiometer of each driver was adjusted.

Comments

[KaiserA]

Hola! he buscado un instructable como estos y al fin lo encontre, me gusta mucho el concepto de la CNC, talvez me podrias ayudar con los diseños y que firmware se uso? Talvez algun controlador como arduino? Te agradeceria muchisimo si me puedes ayudar con el software de control y la programacion para control de los axis, muchas gracias!

[kalana012]

Grest job.can you share the solid work all file ? ([e-mail])

[Mr.A17]

Nice work brother, could you send me file

at

[e-mail]

[Billgabo]

Your Laser CNC can cut canvas (the fabric of backpacks) or leather?

[ErickG36]

Hola, disculpa tienes los archivos stl por favor? ([e-mail])

Gracias, saludos!

[Moita]

Very Good work, can you share de Solidworks Files?

[AdanAscencio]

Yes of course, give me your email adress and I´ll send it to you

[Alan EduardoG]

Hello AdanAscencio, can you share the solidworks files? Please

[AdanAscencio]

Of course whats your email adress?

[oussamab32]

Very Good work, can you share de Solidworks Files?

email:[e-mail]

please !!

[Alan EduardoG]

[e-mail], thanks!!!

[Moita]

Thanks. My email. [e-mail].

[AdanAscencio]

I already sent it, if you did not get the files, notify me to solve it

[jstegall2]

I could use them as well...if you don't mind.

[AdanAscencio]

Of course whats your email adress?

[clock_horse]

Buen trabajo!, una pregunta sobre el modulo laser, Donde lo consiguieron? La uni se los proporciono o lo compraron de algun lado? ando en planes de crear un Laser Engraver y he encontrado algunos lasers en mercadolibre, pero me gustaria saber su opinion y experiencias al respecto.

Saludos!!

[AdanAscencio]

http://www.ebay.com/itm/High-Quality-445nm-450nm-2...
Este fue el laser que utilizamos, nosotros lo conseguimos, brinda muchas facilidades, como su modulo PWM, nos pareció una excelente opción.
Si tienes alguna otra duda házmelo saber :)

[ahadiran]

Very Good work, can you share de Solidworks Files?

Email:[e-mail]

[B 3D Bureau de Criações]

¡ excelente trabajo, muy prometedor! Puedes subir los archivos de SolidWorks a mi correo: [e-mail] ?

Con respecto al software de comando AXIS y laser en sí, ¿usaste cuál? Te pregunto porque estoy totalmente en el tema y me gustaría si es posible enviar la instalación y programación del software, etc.

Voy a estar inmensamente agradecida, por lo tanto, soy un fan de la automatización y estoy iniciando mis estudios en esta área, por lo que me gustaría hacer algo en casa con mis propias manos y con su ayuda.

De antemano te doy las gracias.

[AdanAscencio]

Ya te envie los archivos amigo :)
En el correo tambien especifique los programas usados, si tienes alguna pregunta, no dudes en decirmelo