Table of Contents
CnC learning sections - Diary
DASL 104: Humanoid Robotics
Author: Jean Chagas Vaz Email: chagasva@gmail.com
Date: Last modified on 04/20/2017
Keywords: Diary, Report,
This page is intend to register the weekly progress of the CNC Shop activities.
Week 1
Setting up the CNC Machine properly is very important. In order to safely turn the CNC machine on follow the steps below:
* 01/26/2017 09:00AM to 11:00AM
-Setting up the machine;
-Create a inventory of tools in the machine shop;
-Develop a G code to flat a wood part using a flat mill, in other words produce a full flat surface on the wood block using a 1/4'' flat mill.
Things to do by next section:
- Try to find some cut'offs
- Study the G code created during this section
- Ask for the Mastercan UNLV licence (Talk w/ Dr Oh regarding this matter)
- The doors of the machine were not properly installed (need to be fixed)
Problems:
- The coolant must be bought!
- Aluminium cut-offs must be inquired!
- Buy some extra equipament to safely operate the machine
- The doors of the machine were not properly installed (need to be fixed)
Week 2
* 01/31/2017 09:00AM to 11:30AM
-Flat a surface using a composite wood (4“ by 3”)( This time we reached a high precision surface);
-Work in a profile 2“ by 1” at the center of the wood block with a 0.375 angle;
-Use the fly cutter.
Things to do by next section:
- Get Aluminium the cut'offs
- Study both G code created during this section
- Try to cut profile+pocket
- Continue learning Cam on Fusion 360
Problems:
- We still have no coolant !
- Aluminium cut-offs must be inquired!
* 02/02/2017 08:50AM to 11:45AM
-Flat a surface using Aluminum
Things to do by next section:
- Try to cut profile+pocket
- Desing the first part using Cam on Fusion 360
Problems:
- We need more coolant !
- Buy some extra equipment!
Week 3
* 02/06/2017 09:00AM to 11:10AM
-Prepare the coolant to add in the machine;
-Facing with 3/16“ end mill using 5000RPM and feedrate of 200 /mim
-Removing tool marks using using the fly cutter plus the coolant
Things to do by next section:
- Measure the precision of the flat surface using the Dial gauge and edge gauge.
- Profile a rectangle on Aluminium
Problems:
- We need to buy parallel bars ASAPin order to proper set the parts on the vice !
- The machine is leaking on the left back side due improper installation!
- Change the manual doors.
* 02/07/2017 08:50AM to 11:20AM
-Measure the accuracy on the milled surface produce in the previous section;
* Dial Gauge
* Edge Gauge
- Profile a rectangle on Aluminium using 5000RPM and feedrate of 200 /mim
Things to do by next section:
- Pocket the Aluminium.
- fix the leakage with silicone
Problems:
- Tools are diapering from the machine shop (Start to label the machine shop essential equipment
* 02/09/2017 08:55AM to 11:10AM
-Mill a 1 by 1” pocket on a 1.5“ by 1.5” profile use a 3/16“ HSS end mill;
- Pocket a rectangle on Aluminium using 5000RPM and feedrate of 200 /mim
- The second run was also unsuccessful, due bad reference values.
Things to do by next section:
- Again try to make a pocket the Aluminium.(NOW MAKE SURE TO TRY OUT WITH THE VICE UP A LITTLE)
- Rearrange the Fusion 360 program.
Problems:
- because of the high feed-rate of 200 the end mill broke
Week 4
* 02/14/2017 08:45AM to 11:23AM
-Use the edge finder to verify how parallel the surface is. We found a ten thousandth of inch precision.
- We were using the fly cutter improperly. The right position of the tool is shown below
- Use a new software to estimate the right feedrate speeds.
Things to do by next section:
- Finish a precise profile and a circular pocket
Problems:
- ALWAYS MAKE SURE TO TRY OUT THE CYCLE AT A HIGHER Z POSITION FOR A SAFETY TRYOUT.
* 02/16/2017 08:55AM to 11:10AM
- Make a circular pocket with 0.01 of precision
- Prepare the Aluminium block to finally use fusion 360 G code to machine a pre-design part.
Things to do by next section:
- Go to local market to but extra drills
Problems:
- USE THE SMOOTH MALLET TO remove the tool from the spindle