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. 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. 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 ------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------------------- 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------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------------------- HCMC, 03/May/2023 Advisor i COMMENTS OF REVIEWER ------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------------------- 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------------------------------------------------------------------------------------------------------------------------------------- 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 1 Manufacturing Element MSE 2 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 .2: Some of Bosch's brands .3: Some of Bosch’s customers .4: Bosch Long Thanh factory .5: Logo of Bosch Vietnam Co.6: Products of the company .9: Organizational chart in MSE1 .10: Fine Blanking machine .11: Fine blanking production process diagram .3: Histogram for variables.7 Different components of a control chart .1: Process flow to produce the element .2: Hardness tester machine .3: Control chart of Surface hardness .4: Process capability of Surface hardness .5: Control chart of Saddle height .6: Process capability of Saddle height .7: Pin height of element .8: Control chart of Pin height .9: Process capability of Pin height .10: Pareto chart for Failure mode at the MSE1 department over a period of 1 year from April 2022 to April 2023 .2: Parallelism measuring equipment.3: Probability plot of Thickness .4: Process capability report for Thickness .5: Steps when choosing control chart type .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. Scope and object:. Structure of the report. Overview of Bosch Vietnam Co.2 Bosch Long Thanh factory.
Formation and Development History. Field of operation and products. Field of operation .7 Overview of Fine Blanking process:. 12 CHAPTER 2: LITERATURE REVIEW .1 Statistical Process Control .2 Seven Quality Control Tools: .4 Cause and effect diagram.
24 CHAP 3: ANALYZING THE CURRENT SITUATION OF CONTROL CHART APPLICATION IN MSE1 DEPARTMENT .2 Process flow in MSE1 department .3 Overview of Control Chart System in Bosch Vietnam .4 Control Chart Implementation for Element Manufacturing in MSE1 .5 Requirements for which Control Chart has not been applied .6 Evaluating the frequency of errors for requirements that have not yet been subjected to SPC.1 Determining the primary sources of error. 38 CHAPTER 4: APPLYING CONTROL CHART TO THICKNESS REQUIREMENT IN MSE1 DEPARTMENT .1 Project Initiation and Planning .2 Process Assessment and Data Collection .2 Select critical-to-quality (CTQ) product characteristics .3 Select critical processes .4 Select equipment for sample measurement .6 Sampling Method - Random Sampling .3 Data Analysis and Monitoring: .1 Calculate the process average (mean) and standard deviation (sigma) using the collected data.1 Process capability index (Cpk) .4 Apply the SPC. 56 x INTRODUCTION TO THE REPORT 1. Rationale The rationale for this study is based on the importance of control charts in improving product quality and production efficiency in manufacturing plants.
In today's competitive business environment, manufacturers must ensure that their products meet the required standards of quality and are produced efficiently to remain competitive. Failure to do so can lead to increased production costs, decreased customer satisfaction, and loss of market share. Control charts are a key component of statistical process control (SPC) and provide a systematic approach to monitoring and controlling production processes. They allow manufacturers to visualize process data over time, detect patterns of variability, and make informed decisions to maintain process stability and improve product quality.
By using control charts effectively, manufacturers can identify and address process deviations, reduce defects, minimize rework, and optimize production processes for improved efficiency and productivity. Despite the benefits of control charts, many manufacturing plants face challenges in their implementation. These challenges may include a lack of knowledge and training on how to use control charts effectively, limited resources for investing in SPC, and resistance to change from employees. Therefore, it is important to study how control charts can be successfully applied in a manufacturing plant and identify potential barriers to their implementation.
This study aims to implement control charts at Bosch Long Thanh, specifically focusing on areas where they can be applied to improve production processes, reduce scrap rates, enhance product quality, increase customer confidence, and ultimately boost profitability. The study will involve implementing quality control methods and utilizing control charts to monitor process variability. Overall, this study seeks to demonstrate the benefits of control charts in improving product quality and production efficiency and provide recommendations for their effective implementation at Bosch Long Thanh. By doing so, this study will contribute to 1 the development and improvement of production processes in the manufacturing industry.
Objective The main objective of this Bachelor's thesis is to analyze the current situation and propose solutions for Statistical Process Control (SPC) management at Bosch Vietnam Co. Specifically, the research aims to achieve the following objectives: Survey the current state of SPC implementation at Bosch Vietnam Co. Assess the current SPC situation at Bosch Vietnam Co. and the challenges the company is facing in implementing SPC.
Propose solutions to improve the effectiveness of SPC practices at Bosch Vietnam Co., reducing production errors and costs, thereby increasing production efficiency and the company's competitiveness. Evaluate the potential benefits and impacts of the proposed solutions on the company's production process and product quality. Contribute to understanding the practical application of SPC in the manufacturing industry, particularly in the context of Bosch Vietnam Co., and provide information and recommendations that can be applied to other organizations in the industry. By achieving these objectives, this Bachelor's thesis aims to provide a comprehensive analysis of SPC practices at Bosch Vietnam Co.
and propose practical recommendations to improve the company's production process and product quality. Scope and object: - Scope Space scope: MSE1 Department of Bosch Vietnam Co. Long Thanh Industrial Park, Tam An Commune, Long Thanh District, Dong Nai Province, Vietnam Time scope: The study was conducted over a period of 6 months, from December 2022 to July 2023 - Object: The Element production in MSE1 department at the Bosch Vietnam Co. Research methodology The author employed both qualitative and quantitative research methodologies in the study.
Qualitative research techniques were utilized to gather information about the challenges impacting the implementation of control charts in the MSE1 department. To obtain insights on issues and potential solutions from operators, engineers, and production experts, the author employed the focus group interview method. The information obtained through these interviews enabled the author to understand the current operational status of the production line as well as to garner suggestions for implementing control charts in the facility. To obtain data samples of requirements for applying control charts in the production, quantitative research methods were employed.
The author analyzed the gathered data using statistical techniques prior to proposing any improvement recommendations. Structure of the report The expected structure of the thesis includes four main chapters and a conclusion section. Chapter 1: Introduction to Bosch Vietnam Co., Ltd Chapter 2: Literature review Chapter 3: Analyzes the current situation of Control chart at Bosch Long Thanh factory Chapter 4: Apply Control chart for thickness requirement in MSE1 department Conclusion 3 CHAPTER 1: INTRODUCTION 1. Overview of Bosch Vietnam Co.
Robert Bosch established the Bosch Group in 1886 in Stuttgart, Germany. Since that time, Bosch has increased the scope of its operations globally, emerging as a leader in the provision of technology and service solutions globally. With 440 subsidiaries, sales, and service partners spread throughout more than 150 countries and areas, the Bosch Group is currently active in more than 60 nations and regions globally. The Bosch Group employed 402,600 people in total across the globe as of the end of 2021, generating 78.7 billion euros in revenue.
Bosch Vietnam Co. In 1994, Bosch opened its first representative office in Ho Chi Minh City to launch its business in Vietnam. The firm has been represented by Robert Bosch (Vietnam) Co. Bosch Vietnam currently works in many sectors, including sales, manufacturing, R&D, and international service facilities.
Bosch Vietnam's corporate office is in Ho Chi Minh City, and the company also has offices in Hanoi, Danang, and a factory in Dong Nai province that makes power transmission belts for vehicle continuously variable transmission (CVT) belts. Additionally, Bosch maintains two research and development facilities for automotive technology in Ho Chi Minh City. In Vietnam, Bosch generated sales of over 192 million euros in 2021.1: Factual information and statistics about Bosch in Vietnam in 2021 4 Source: Company website Brands of Bosch Figure 1.2: Some of Bosch's brands Source: Company website Customers of Bosch Figure 1.3: Some of Bosch’s customers Source: Company website 5 1.2 Bosch Long Thanh factory Figure 1.4: Bosch Long Thanh factory Source: Company website Name: Bosch Vietnam Co. Slogan: "Invented for life.5: Logo of Bosch Vietnam Co.
Source: Company website Address: Street No. 8, Long Thanh Industrial Park, Long Thanh District, Dong Nai Province. Phone: 0251 6262 585 Tax code: 3603119522 6 Company website: bosch.vn Area: 17,000m2 Market: Global, especially China and Japan. Formation and Development History Important turning points in HcP's lengthy growth process include: October 22, 2007: The factory construction project was started.
August 1, 2008: At a rented factory in the high-tech industrial park, HcP installed the first power transmission belt assembly line. December 16, 2010: Began moving operations to the finished factory. January 3, 2011: The start of the first Element production line. July 3, 2012: HcP created its initial Loop set.