FACULTY OF MECHANICAL ENGINEERING

BMM 3611 MANUFACTURING PROCESSES LABORATORY

ADVANCED MACHINING CENTRE (CNC MILLING)

Laboratory Date

Submission Date

Lecturer

JP/PJP

1)

2)

3)

Learning objectives

By the end of semester, students should be able to:

1. Know safe practices in manufacturing processing area. 2. Know tools, equipment and raw material for the respective lab. 3. Know standard operating procedure for the demonstrated machine. 4. Analyzed specific case study related to manufacturing process.

Members ID Section Signature

BMM3611(1112)_AMC Lab sheet

Prepared by:

MZS@FKM,UMP(2012)

1. Introduction

The objective of this laboratory is to provide hands on experience of computer numerical

control (CNC) machines. The machines are widely for bulk metal shaping.

Milling is a machining operation in which a workpiece is fed past a rotating cylindrical

tool with multiple cutting edges. The axis of rotation of the tool is perpendicular to the feed

direction. The tool is called the milling cutter and the cutting edges are called teeth. Mostly plane

surfaces are created through milling.

2. Lab activities

Activity Task Form

Safety Each student gather in group In sequence, each student read the saftety clause. If not

understand, put a note and JP/PJP will explain later.

Sign the acknowledgement forms

Sign the

acknowledgement

of safety

requirement form

Know tools,

equipment and

materials

JP/PJP will give 10 questions about raw material, tool and equipment application in this lab.

Student must find out the answer. (Eg. tool name & their purpose, raw material description and the final product, etc..)

Give your answer

in lab report

Intro to AMC JP/PJP give brief explainaton on all machines in AMC ( their function advantages & limitation)

Student must give attention. Prefer to take a note.

JP/PJP briefing

Case study A case study requires student to find out an answer on the specific problem in production.

Based on the chosen case study, JP/PJP will explain and demonstrate process sequence (SOP) for the selected process.

In certain cases, student will be asked to do spesific task.

Student must explain thoroughly on outcome of their investigation

Describe in details

in lab report

Safety in lab

Know tools and processes materials

Brief on all machines

Case study

BMM3611(1112)_AMC Lab sheet

Prepared by:

MZS@FKM,UMP(2012)

3. Case study : CNC Milling (HAAS)

Please use the attached process sheet.

Measure dimension and weight of a workpiece used in this lab

Describe a method how the workpiece tighten to the worktable

Know how to operate the machine; o Control Panel Overview o Entering Program o Program Execution

Measure cutting time to complete a single machining operation.

Measure after machining part weight

Get a copy of CNC programming o Explain the first 10 operation in the CNC programming o Explain the last 5 operation in the CNC programming

Using the related equation, calculate; o Cutting time (for single operation) o Material removal rate (MRR)

Compare your result with the experiment result

4. Lab report

For your project report, provide the following:

1. Use a cover page similar to the labsheet format. 2. Contents for the report are;

Introduction

Raw materials

Process tools

Machines and their applications

Case study Process setting / Design consideration/ Product defect & countermeasure

Conclusion/Lesson learned

References

3. Discuss the strengths and weaknesses of this laboratory. Did the laboratory help you to learn the material better? Explain why or why not.

4. The report should be done in MS Word and an equation editor should be used for all equations.

5. Equations should be numbered and plots should be numbered and referenced with a descriptive caption.

6. Each group must submit a hard copy of the report.

BMM3611(1112)_AMC Lab sheet

Prepared by:

MZS@FKM,UMP(2012)

BMM3611

Process sheet

(CNC Milling)

Workpiece material: Group name:

Specific material grade: Date:

# Operation

description

Machine tool Process parameters

# of repeats Remarks

Type Tool/work

Angular speed Depth of cut (mm) Linear

speed Feed rate

rev/s Radial Axial (mm/s) mm/s