Aim

This week I will use Vicky's mortise and tenon machine to make mortise and tenson joint as the following picture

Machine

This mortise and tenon machine is design and made by Vicky and I give some help in Arduino control.

The above gif simply introduce the structure of machine .

Coding

This time I need to tell the board which shape I need.

According to the above picture. I need to define the following parameter in Arduino Consider the width of saw and tolerance: So I update to the following shape data

float a=10;         // finger, in this case is 10
float b=a+2e-d;     //cutaway b=a+2e-d 
float  c;           //wood width:depend on the material and design ,in this case it is 200
float  d=2.5;       //saw witdth:it depend on the machine ,and the width of machine we choice is 2.5mm
float  e=0.3;       //tolerance:it depend on the processing and machine ,in this case we choice 0.2mm

Then I add it in my Arduino code "parameter part". Read it in the attachment update it to Arduino Mega2560.

Operating

1. We put the machine on the table saw and then fix the wood on the machine . We use bolt and support wood to fix our wood.

1. Run the table saw. Rise the saw and then open it
2. Click the left button. the motor run and the wood will move 1.6mm

In Arduino code ,it will calculate as the following:

```
b=a+2*e-d;   // cutaway b=8.1
h=int(b*1.5/d+1);  //cut time is h=5
j=b/h;        //cut distance every time j=1.62mm
```

1. Use hand to push the machine according to table saw's pathway ;
2. Then click the left button ,cycle point3 and point 4;
3. If cutaway finish ,it will direct go 10mm to avoid finger;

Effect

After finish(we make two of them ).And then test to assembly:

This small gif show how to make it. At Last ,thanks for the help from vicky.

Attachment

Code