An evaluation of the effectiveness of control chart implementation and proposed solutions for bosch vietnam co , ltd

MINISTRY OF EDUCATION AND TRAINING HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION FACULTY FOR HIGH QUALITY TRAINING CAPSTONE PROJECT INDUSTRIAL MANAGEMENT AN EVALUATION OF THE EFFECTIVENESS OF CONTROL CHART IMPLEMENTATION AND PROPOSED SOLUTIONS FOR BOSCH VIETNAM CO., LTD LECTURER: HUYNH ANH TUAN, MA STUDENT : NGUYEN THI TU VY SKL010194 Ho Chi Minh City, May 2023 HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION FACULTY FOR HIGH QUALITY TRAINING THESIS AN EVALUATION OF THE EFFECTIVENESS OF CONTROL CHART IMPLEMENTATION AND PROPOSED SOLUTIONS FOR BOSCH VIETNAM CO., LTD Student: NGUYEN THI TU VY Student ID: 19124003 Major: INDUSTRIAL MANAGEMENT Advisor: HUYNH ANH TUAN, MA HO CHI MINH CITY, May 2023 COMMENTS OF ADVISOR - HCMC, 03/May/2023 Advisor i COMMENTS OF REVIEWER HCMC, 03/May/2023 Reviewer ii ACKNOWLEDGEMENTS The author would like to express his profound gratitude to the teachers at the Ho Chi Minh City University of Technology and Education's Faculty of Economics for sharing their knowledge with him throughout his time in college This knowledge serves as the basis for the research process in addition to being a great asset for the author when they begin a new job The author wishes to express his sincere gratitude to all of the lecturers The supervisor, Master Huynh Anh Tuan, who exhibited kindness, encouragement, and detailed supervision throughout the completion of the graduation thesis, is also acknowledged by the author with sincere gratitude The author would also like to thank the Board of Directors of Bosch Vietnam Co., Ltd for giving him the chance and enabling circumstances to work as an intern there This made it possible for the author to finish the graduation thesis while working as an intern at the company The author sincerely thanks the teachers for their comments and ideas, which have helped to better the graduation thesis The author would like to sincerely thank all of the lecturers HCMC, 03/May/2023 Student name Nguyen Thi Tu Vy iii LIST OF ABBREVIATION ABBREVIATION EXPLANATION HcP Ho Chi Minh City Plant PC Commercial Plant Management PT Technical Plant Management CTG Controlling HRL Human Resources FCM Facility Management HSE Health Safety Environment MSE Manufacturing Element MSE Manufacturing Loop ICO Information Coordination & Organization LOG Logistics TGA Technical Industrial Apprenticeship QMM Quality Management and Method ETC Engineering Technology Center CVT Continuously Variable Transmission PQA Purchasing Quality Assurance QMM3 Quality Assurance TEF Maintenance Department SPC Statistical Process Control CpK Process capability index LSL Lower Specification Limit USL Upper Specification Limit iv LIST OF TABLES Table 4.1 Data of thickness requirement 47 v LIST OF FIGURES Figure 1.1: Factual information and statistics about Bosch in Vietnam in 2021 Figure 1.2: Some of Bosch's brands Figure 1.3: Some of Bosch’s customers Figure 1.4: Bosch Long Thanh factory Figure 1.5: Logo of Bosch Vietnam Co., Ltd Figure 1.6: Products of the company Figure 1.7: Organizational chart Figure 1.8: Element 11 Figure 1.9: Organizational chart in MSE1 12 Figure 1.10: Fine Blanking machine 13 Figure 1.11: Fine blanking production process diagram 13 Figure 2.1 Process capability 16 Figure 2.2: Check sheet 16 Figure 2.3: Histogram for variables 18 Figure 2.4: Pareto chart 19 Figure 2.5: Fishbone diagram 21 Figure 2.6: Scatter Diagrams 22 Figure 2.7 Different components of a control chart 23 Figure 2.8: Stratification 24 Figure 3.1: Process flow to produce the element 27 Figure 3.2: Hardness tester machine 29 Figure 3.3: Control chart of Surface hardness 30 Figure 3.4: Process capability of Surface hardness 31 Figure 3.5: Control chart of Saddle height 32 Figure 3.6: Process capability of Saddle height 33 vi Figure 3.7: Pin height of element 34 Figure 3.8: Control chart of Pin height 34 Figure 3.9: Process capability of Pin height 35 Figure 3.10: Pareto chart for Failure mode at the MSE1 department over a period of year from April 2022 to April 2023 38 Figure 4.1: Element 42 Figure 4.2: Parallelism measuring equipment 44 Figure 4.3: Probability plot of Thickness 48 Figure 4.4: Process capability report for Thickness 49 Figure 4.5: Steps when choosing control chart type 50 Figure 4.6: Xbar-R Chart of Thickness 51 vii TABLE OF CONTENTS COMMENTS OF ADVISOR i COMMENTS OF REVIEWER ii LIST OF ABBREVIATION iv LIST OF TABLES v LIST OF FIGURES vi TABLE OF CONTENTS viii INTRODUCTION TO THE REPORT 1 Rationale Objective Scope and object: Research methodology Structure of the report CHAPTER 1: INTRODUCTION 1.1 Overview of Bosch Vietnam Co., Ltd 1.2 Bosch Long Thanh factory 1.3 Formation and Development History 1.4 Field of operation and products 1.4.1 Field of operation 1.4.2 Product 1.5 Organizational Structure 1.6 MSE1 Department 11 1.7 Overview of Fine Blanking process: 12 CHAPTER 2: LITERATURE REVIEW 15 viii