4. COMPUTER CONTROLLED CUTTING

This assignment is divided into two parts

GROUP ASSIGNMENT

We will characterize the lasercutter’s focus, power, speed, rate, kerf, and joint clearance.

We decided to make a catalog of cuts for material. We tested different materials for example : MDF, Acrylic, Paperboard, Plywood.

Epilog Laser Mini Machine

We used the Epilog Laser Mini Machine,

I worked with the Corel draw x7 software that considers the epilog cutting machine as a printer, the most important thing is that for the machine it can cut, the thickness of the lines of my design has to be “very thin”. Then, when I send the design to the laser cutter, the parameter configuration window is displayed.

In this window three types of cut are shown: * Vector: To make only cutting * Raster: To make only recorded * Combined: To make both

I used the combined option, the parameters being the following * Power * Speed * Frequency

Also activate the AUTOFOCUS option, this option allows you to auto-calibrate the laser beam nozzle to the surface of the material

And it is important to enter the work area: (600 * 300 mm), size of my material.

I also turn the extractor on, because the EPILOG emits gases through the laser cut.

MDF 3 mm

The first one material was MDF 3 mmm. The materials do not come with the thickness they tell you in the store so it is important to use the vernier to measure the thickness of each material. Each board of mdf measures 30 * 60 cm. We designed in Corel Draw then cut.

We observed that the parameters were 10 of speed, 100 of power, 500 of frequency.

ACRYLIC 3 mm

We used material provided by Fab Lab Esan. We found black acrylic 3 mm thick.Each board of acrylic measures 30 * 60 cm. We designed in Corel Draw then cut.

We observed that the parameters were 08 of speed, 100 of power, 500 of frequency.

PLYWOOD 3 mm

We used material provided by Fab Lab Esan. Each board of Plywood measures 30 * 60 cm. We designed in Corel Draw then cut.

We observed that the parameters were 10 of speed, 100 of power, 500 of frequency.

PAPERBOARD 4 mm

We used material provided by Fab Lab Esan. Each board of Paperboard measures 30 * 60 cm. We designed in Corel Draw then cut.

We observed that the parameters were 37 of speed, 100 of power, 500 of frequency.

FINAL SAMPLE

These are the sample of the materials that you can work in press fit due to the rigidity of their composition.

INDIVIDUAL ASSIGMENT- VYNIL

I worked with CorelDRAW 2017, I downloaded the image of this links, please click here

Then I copied it into CorelDRAW

I put a text Scooby doo pa-pa because my pet is called Scooby

We observed that the image doesn’t have good quality, I vectorized this image

I chose the vectorized image.

I tried putting colors to the image, because the Ronald machine recognizes the colors to be able to cut it.

I grouped the image and I placed an outer rectangle of the image so that it is the best cut.

I exported the image to PNG

I entered to Fab modules

I used to Roland Machine

I started to extract some pieces to get only the figure.

I decided to paste the figure in my car.

You can download the files by clicking on the bullet.

  • SCOOBY_LOGO

    • INDIVIDUAL ASSIGMENT- LASER CUTTER

    This was my first time trying “parametric design”, My instructor showed me how to easily link the different dimensions, so one depens on another. This way, my design is set up in a way that if I change one measure, like the pressfit one, the other changes accordingly.

    I put a arc and I delimited it with dimensions.

    I delimited used a previous reference measure ,so that when I limit the new dimensions,

    these are dependent functions of the main dimension

    I created another piece delimiting according to the function dependent on the previous main dimension,

    which is why it is visualized in the dimensions of my design with the symbology (d10)

    Also Inventor allows to create designs from an assembly, then I assembled the two pieces that I created previously and started designing the new pieces from this created assembly, therefore my design becomes parametric since I have projected the silhouettes of these already existing pieces and allows me to base my dimensions and measurements on the dimensions of these projections. In other words, if the dimensions of the existing pieces vary or their projections are modified they will also be modified automatically. Finally everything is tied to the initial dimension of the piece that I created, this would be the thickness of where the PRESS FIT (2.9).

    I used a Epilog Laser Machine

    I started to assemble the pieces

    You can see the furniture

    You can download the files by clicking on the bullets.