REPORT CNC

REPORT CNC ( COMPUTER NUMERICAL CONTROL )

NAMA : MOHAMMAD DANIEL EZMEER BIN KAMAL
NO MATRIK : 14DKM20F1038
KELAS : DKM5A
KOD KURSUS : DJJ 40193
LECTURE : PUAN NORMAH BINTI CHE MAN

TUAN SYAHRAIN BIN MAT YAMIN
TUAN AKBAR BIN OTHMAN

2.0 OBJECTIVE
• To expose the student know part of cnc machine
• To expose the student how the procedure to use cnc machine
• To expose the student can use mastercam

3.0 INTRODUCTION

Kawalan Numerik Komputer (CNC) adalah protokol reka bentuk komputer (CAD) yang
menukarkan reka bentuk ruang menjadi satu siri nombor. Mesin CNC memerlukan profesional
CNC yang boleh menguruskan proses industri dengan teknologi CAD terkini. Komponen CNC
utama ialah evolusi CAD dari rekaan kawalan numerik sebelumnya (NC). Dengan CNC
moden, sistem digital boleh memprogramkan nombor-nombor ini ke dalam mesin untuk
menggantikan kaedah pemrograman manual atau analog kurang automatik. CAD dan
pembuatan komputer (CAM) adalah standard dalam banyak industri di mana syarikat-syarikat
membeli mesin CNC mahal untuk membuat produk dengan cara yang lebih canggih.
Konsep CNC boleh digunakan untuk pelbagai jenis mesin, seperti latihan, gergaji atau mesin
bubut. CNC juga digunakan untuk membina pemotong plasma yang boleh merancang bahan
menggunakan obor plasma berkuasa tinggi. Mesin CNC lain termasuk kilang, penghala,
pemotong jet air, pengisar permukaan, alat kimpalan, pencetak 3-D dan pemotong kaca.

4.0 TOOLS AND EQUIPMENT

1. CNC MACHINE

2. MASTERCAM

5.0 SAFETY PROCEDURE

• The use of CNC machine tools requires at least the same precautions as with
conventional machine tools, including eye protection and standard setup procedures
and operation.

• Do not let other distract you from your work. Your concentration is critical when
setting-up and operating machine tools. Likewise do not distract other they need to
concentrate

• Do not work inside a CNC machine tool when someone else is touching the
controls.They might accidently start the machine and cause serious injury to you.

• Always put the machine in a locked mood such ada "edit' before changing the tools or
workplace

• Use appropriate Personal Protective Equipment ( PPE) as needed.

6.0 PROCEDURE

1. Draw part in Autocad or Autodesk inventor and then transfer program or load
drawing program file into MasterCAM.

2. Program cutters, toolpaths, speeds, feeds, ete in MasterCAM and transfer part
programming on CNC machine.

3. Enter the code manually or just input the programming code automatically from the
software Mastercam.

4. Adjust the bit on the CNC machine to point (0,0) and run the machine.

5. After finish, clean the machine using a proper brush or vacuum to make sure the
machine not so dust before we use it again.

7.0 RESULT

8.0 CONCLUSION

CNC machining offers a reliable solution for rapidly manufacturing the parts. The current
approach, using an indexable tool, managed to eliminate multiple set-ups of the workpiece.
The visibility programme is an effective method to identify orientations for finishing
operations. However, performing roughing operations within a finishing orientations sets tends
to constrain the roughing task and causes several inefficiencies. This study overcomes this
constraint by formulating an alternative method to find optimum orientations for roughing
operations. Implementing four roughing orientations reduced machining time and tool contact
length. This approach is considered as a feasible solution to optimize the process. The present
study makes several noteworthy contributions in the rapid production of end-user products.
Particularly, in low volume productions, the roughing processes can be improved using the
optimum cutting orientations proposed from this research. Minimizing the fabrication time will
increase production rates. Moreover, the roughing strategy is also capable of controlling the
tool contact length which results in longer cutting tool life. Ultimately, all these will drive the
production cost lower and make CNC machining a viable process for RM. Future work will
emphasize coding and programming that operates within the CAD system to create an
automatic system and achieve the goal of rapid manufacturing.

9.0 REFERENCES

• Balasubramaniam, M. (1999). Tool selection and path planning for 3 axis rough
cutting (PhD thesis). Department of Mechanical Engineering, Massachusetts Institute
of Technology, Cambridge, US.

• Campbell, I., Bourell, D., & Gibson, I. (2012). Additive manufacturing: Rapid
prototyping comes of age. Rapid Prototyping Journal, 18, 255–
258.10.1108/13552541211231563

• Frank, M. C. (2003). The development of a rapid prototyping process using computer
numerical controlled machining (PhD’s thesis). The Pennsylvania State University

• Frank, M. C. (2006). Subtractive rapid prototyping: Creating a completely automated
process for rapid machining. In A. K. Kamrani & E. A. Nasr (Eds.), Rapid
prototyping: Theory and practice (pp. 165–196). New York, NY: Springer Science
Business Media

• Frank, M. C. (2007). Implementing rapid prototyping using CNC machining (CNC-
RP) through a CAD/CAM Interface. Proceedings of the Solid Freeform Fabrication
Symposium, Austin, Texas, TX.