Phần mở đầu: lý do chọn đề tài, tầm quan trọng của đề tài, mục đích nghiên cứu đề tài, đối tượng và phạm vi nghiên cứu, phương pháp nghiên cứu. Phần nội dung: được trình bày trong 3 phần, gồm 11 chương tập trung vào những vấn đề sau: PHẦN I: DUNG SAI VÀ LẮP GHÉP Các khái niệm cơ bản, dung sai và lắp ghép bề mặt trơn, sai lệch hình dạng và vị trí – Nhám bề mặt, dung sai và lắp ghép các chi tiết điển hình, chuỗi kích thước. PHẦN II: KỸ THUẬT ĐO Các vấn đề cơ bản của kỹ thuật đo, đo kích thước dài, đo kích thước góc, đo sai lệch hình dạng và vị trí. PHẦN III: BÀI TẬP THỰC TẾ Các bài tập được thiết kế, gia công và đo lường bằng các máy hiện đại (CMM, VMM) PHẦN IV: ĐÁNH GIÁ KẾT QUẢ CUỐI CÙNG Quy trình thực hiện và đóng góp của nhóm cho đề tài Phần kết luận và kiến nghị: trình bày những kết quả đạt được của quá trình nghiên cứu đó là biên soạn được bài giảng “Dung sai kỹ thuật đo hoàn toàn bằng tiếng Anh”.
Đưa ra một số kiến nghị với mong muốn nhóm nghiên cứu sau tiếp tục nghiên cứu và phát triển đề tài theo hướng hoàn thiện hơn. Trương Quang Nguyên, Hoàng Trọng Phúc. iii ABSTRACT Research and compile reference materials, lectures, exercises and question banks for the subject of technical tolerance measurement in English in the direction of updating standards. The project content is presented in three parts: Introduction: reason for choosing the topic, importance of the topic, purpose of researching the topic, object and scope of research, research methods.
Content: presented in 3 parts, including 11 chapters focusing on the following issues: PART I: TOLERANCES AND FITTING Basic concepts, tolerances and assembly of smooth surfaces, shape and position deviations – Surface roughness, tolerances and assembly of typical parts, dimension chains. PART II: MEASUREMENT TECHNIQUES Basic issues of measuring techniques, measuring length dimensions, measuring angular dimensions, measuring shape and position deviations. PART III: PRACTICAL EXERCISES Exercises are design, machining and measurement by modern machine (CMM, VMM) PART IV: ASSESSMENT OF FINAL RESULTS Implementation process and group's contribution to the topic Conclusion and recommendations: presents the results of the research process and compiles the lecture "Measurement technical tolerances entirely in English". Make some recommendations with the hope that the following research group will continue to research and develop the topic in a more complete direction.
Trương Quang Nguyên, Hoàng Trọng Phúc. iv MỤC LỤC LỜI CAM KẾT. iv MỤC LỤC. v DANH MỤC BẢNG.
xi DANH MỤC HÌNH ẢNH. xiii DANH MỤC TỪ VIẾT TẮT. xxiii TỔNG QUAN VỀ ĐỀ TÀI NGHIÊN CỨU. 1 PART I: TOLERANCES AND FITS.
1 CHAPTER 1: BASIC DEFINITIONS .1 Tolerances and fits basic definitions .5 Diagram showing the fit tolerance zone distribution. Concept of interchangeability .1 Ethos of interchangeability .2 Effect of interchangeability. 12 CHAPTER 2: SMOOTH PARTS TOLERANCES AND FITS .1 Tolerance zone definitions. The tolerance zone's position.2 Choose tolerance system .3 Record tolerance fit symbols on drawing.
Record tolerance symbols. Record the fit symbol .4 Choose fits for smooth surface joints. Choose clearance fit. Choose transition fit.
Choose interference fit. 29 CHAPTER 3: SHAPE DEVIATION AND POSITION OF SURFACE ROUGHNESS .1 Shape deviations and position deviations .2 Surface position deviations. Total deviations in shape and position. Shape and position tolerance.
Indicating geometrical tolerances in the drawing .2 The impact of surface roughness on the functional characteristics of components. Typical criteria for surface roughness .3 An indicator of the surface texture that is required .1 Graphic symbols of surface texture .2 Place to input the specifications for surface texture .3 Guidelines for comparing tolerance limits with surface roughness data .4 Limits of tolerance indicated restrictions on one or both sides of the tolerance indication .5 Guidelines for processing procedures or other processing-related issues .6 The symbols that indicate the standard lay directions .7 Instructions for cutting allowance .4 Methods for specifying surface texture requirements on drawings .1 Indicated position and orientation of graphical symbols .2 Indicate a delineation line, guiding line, or elongation line.3 On the geometric tolerance indicator frame .5 Symbol is indicated on the extension line .6 Indicate on prismatic and cylindrical surfaces.7 Indicate components that are rounded, chamfered, etc.8 Give an example of a circular hole.5 An simplified representation of the surface texture specifications .1 The criteria for surface texture are similar for most surfaces.2 How to write hieroglyphs with letters .6 Surface texture guidelines both before to and after surface treatment .7 Sources of information for expressing surface roughness. 91 CHAPTER 4: TOLERANCES AND FITS OF TYPICAL PARTS .1 Tolerances and rolling bearing fit .2 Rolling bearing analysis and characteristics .3 Select rolling bearing fit .4 Rolling bearing radial internal clearance .2 Tolerances and key joints and spline joints .1 Tolerances and key joints .2 Splined joints tolerances and fits .3 Tolerances and fits of threaded joints .2 Fit of threaded. 138 CHAPTER 5: DIMENSION CHAINS .2 Classification the dimensional chain .3 The dimension chain's elements .2 SOLVE THE DIMENSION CHAINS .1 Relationship between components in the chain .2 Solve the dimensional chain problem .3 RECORD DIMENSIONS ON DETAIL DRAWINGS.1 Basic requirements for dimensioning .2 Basic principles of dimensioning.
149 PART II: MEASUREMENT TECHNIQUE. 159 CHAPTER 6: BASIC ISSUES OF MESURING TECHNIQUE .2 Measurement units and measurement system units. Fundamental techniques for measuring and evaluating. The relationship between the value of the quantity being sought and the value of the quantity being measured is determined by their correlation:.
Based on how the value of the measured amount and the indication value on the measuring device relate to each other:. Measurement instruments are classified into two categories depending on the correlation between the measuring head and the surface of the measuring component. Depending on how the measurement findings are used:. Categorized into two groups based on the substance of the measuring work:.
Categorization of measurement errors. Processing measurement results. 174 CHAPTER 7: LONG SIZE MEASUREMENTS .2 Common measuring tools .3 Parallel pattern alignment. Dial bore gage.
220 CHAPTER 8: ANGULAR MEASUREMENTS .1 Angular gauging by direct gaugingt method. Angle gauge block.4 Limited clutch caliper .2 Angular gauging by indirect gauging method.4 Utilize ball bearings and extended measurement instruments. 240 CHAPTER 9: MEASURING DEVITATIONS IN SHAPE AND POSITION .1 Measurement of shape deviation.1 Gauging of straightness .2 auging of flatness .3 Gauging of circularity .2 Correlative position error measurement between plane .2 Measurement of perpendicularity .3 Measurement of runout .4 Intersection of axes measurement .5 Measurement of symmetry. 258 PART III: PRACTICAL EXERCISES.
264 CHAPTER 10: DESIGN AND MANUFACTURE EXERCISES .2 30 parts for Cp, Cpk .1 Explanation of process capability report: .2 Caculate for dimensions ± , : .3 Caculate for dimensions ∅ + + , : .4 Caculate for dimensions ± , : .3 Measurement exercises on CMM machines: .4 Measurement exercises on VMM machines: .5 Actual test images:. 278 CHAPTER 11: PRACTICE MEASUREMENT ON VMM MACHINE. Details to be measured. Necessary tools for measuring.
Details to be measured. Necessary tools for measuring. Details to be measured. Necessary tools for measuring.
Details to be measured. Necessary tools for measuring. 294 PHẦN IV: ĐÁNH GIÁ KẾT QUẢ CUỐI CÙNG. 296 KẾT LUẬN – KIẾN NGHỊ.
297 TIẾNG ANH CHUYÊN NGÀNH. 298 TÀI LIỆU THAM KHẢO. 322 x DANH MỤC BẢNG Table 2. 1 Equivalent fits on the hole basis systems [13].
2 Equivalent fits on the shaft basis systems [13]. 3 Standard tolerance zones of hole [2]. 4 Standard tolerance zones of shaft [2]. 5 Standard fit in the hole basic system [2].
6 Standard fit in the shaft basic system [2]. 7 Limiting deviations of hole and shaft [13]. 8 Limiting deviations of hole. 9 Limiting deviations of shaft .1 Relationship between flatness and straightness tolerance and dimensional tolerance [2].
2 Relationship between shape tolerance grade and dimensional tolerance grade[2]. 3 Symbols representing the characteristics to be toleranced [2]. 4 Compares the ways of indicating tolerances of shape and position according to IS: 3000 (part-1)-1976 with those commonly used in the industry. 5 Surface roughness parameter [2].
6 Standard values of Ra and Rz [2]. 7 Detailed instructions and specifications for the graphical symbols [13]. 8 Ra and Rz in standard order (µm) [13]. 9 Ranges of surface roughness and different processing techniques [13].
10 Displays the symbols that indicate the standard lay directions. 11 Surface roughness and fit tolerance [13]. 12 Shows updated roughness conversion of old JIS. 13 Shows reference examples of selection criteria.
1 Comparing the two sliding bearings and rolling bearings [10]. 2 Classification of Rolling Bearings. 3 Classification of Rolling Bearings [2]. 4 Standard tolerance zones for shafts and holes fitting rolling bearing [2].
5 The tolerance zones for the dimensional components of splined joints [2]. 6 Optimal choices for splined joints [2]. 7 Tolerance level and basic thread variation in the clearance fit [2]. 8 For threaded joints, clearance fit tolerance zone and fit type [2].
9 For threaded joints, interference fit tolerance zone and fit type [2]. 10 Zone of tolerance and kind of fit for threaded joints using transition fit [2]. 11 Series of Standard preferred sizes. 1 The dimension distance's "i" values [2].
2 Fundamental tolerances of grades 1 to 18 (up to 3150mm) [13]. 1 Outlining the primary distinctions between indirect and direct measurement. 1 Evaluate the capacity of the process based on each range of Cp values achieved. 2 Data check dimensions 50 ± 0,02:.
3 Data check dimensions ∅30 + 0 + 0,021:. 4 Data check dimensions 15 ± 0,021:. 1 Measure circle diameter ∅25 + 0 + 0,052. 2 Measure circle diameter ∅10 + 0 + 0,036.
3 Measure the width of square 10 ± 0,011. 4 Measure circle diameter Ø200 + 0,052. 5 Measure circle diameter Ø9 + 0 + 0,036. 9 Measure circle diameter Ø300 + 0,052.
10 Measure circle diameter Ø100 + 0,036. 14 Measure circle diameter Ø300 + 0,052. 295 xii DANH MỤC HÌNH ẢNH Fig.1 Schematic depicting tolerances and fundamental variations in size .2 Dimensions with specified tolerances for external as well as internal characteristics.3 Bilateral tolerance of equivalent fluctuation .4 Bilateral tolerance of unequivalent fluctuation .5 Unilateral tolerance with zero variation on direction directly indicated .6 Maximum and minimum size .7 Assembled parts dimensioning .9 Cylindrical face assembly .13 Illustration depicting the distribution of tolerance zones for fit .14 Diagram illustrating the arrangement of fits [13] .15 Adjust diagrams based on partial interchangeability [2]. 1 Hole and shaft of fundamental deviations [13].
2 Fundamental deviations and Second deviation. 3 Illustrative examples demonstrating the concepts of shaft basis and hole basis systems. 4 Constructing the outer ring by connecting it to the bore housing. 5 Putting together a smooth shaft with a variety of holes [2].
6 Record the tolerance zone symbols on the detail drawing. 7 Record the tolerance symbols on the detail drawing. 8 Record the fit symbol on the assembly drawing. 1 Deviation from straightness [2].
2 Straightness deviation types [17]. 3 Gauging of straightness [17]. 4 Deviation form Flatness [2]. 5 Flatness deviations types [17].
6 Gauging of Flatness [17]. 7 Deviation form Circularity [2]. 8 Circularity deviation types [17]. 9 Gauging of Circularity [17] .