Computer-Controlled Machining A¶
Group assignment requirements¶
The group assignment for this week is the following:
- Complete your lab’s safety training
- Test runout, alignment, fixturing, speeds, feeds, materials and toolpaths for your machine
- Document your work to the group work page and reflect on your individual page what you learned
Large format CNC router machine specs¶
This week, we delved into the fascinating world of CNC (Computer Numerical Control) technology and acquired valuable knowledge. We learned about the various aspects of CNC, including the speed of the spindle, precautions to be taken during CNC operation, and the machine’s performance optimization through adjustments in spindle rotation speed and feed rate. Understanding these factors allows us to effectively reduce the time needed to cut intricate designs. Moreover, we also dedicated time to exploring essential safety tips for maintaining a secure working environment within the CNC router room.
The following pictures for CNC machine
Machine Safety¶
To address emergency situations, there are two red buttons available for stopping the machine — one located directly on the machine, and another positioned in close proximity to the computer. (Note: green for running, blue for reset)
Personal Safety¶
To ensure personal safety, it is essential to adhere to the following guidelines: wear protective goggles, choose appropriately fitted clothing, and use safety shoes.
Fixturing and machine setup¶
Before starting work on the CNC machine, it is important to follow these steps:
- Ensure that the platform is parallel to the supported plate.
- Securely fix the board in place using screws.
- Choose the appropriate type of drill.
- Remember to turn on all the power switches (green for running, red for reset).
- Place the drill in the corner at the origin point.
- Adjust the position of the drill using the iron plate. After finishing, ensure that the clip is connected to it; otherwise, the electrical circuit will not be complete.
### Group assignment
For our group assignment, we experimented with different speeds and feed rates for cutting. We discovered that the optimal speed is 90, while the ideal feed rate is 14,000.
