1. Overview of Force-Locked and Form-Locked Joints
   1.1 Definition of Force-Locking and Form-Locking
   1.2 Form-Locked Joints
   1.2.1 Pins and Bolts
   1.2.2 Riveted Joints
   1.2.3 Parallel Keys
   1.2.4 Splined Shafts
   1.2.5 Gears
   1.3 Force-Locked Joints
   1.3.1 Direct Interference Fits
   1.3.2 Indirect Interference Fits
   1.4 Combined Form- and Force-Locked Joints
   1.4.1 Bolted Joints
   
   
2. Focus on Bolted Joints
   2.1 Manufacturing Methods for Bolts and Nuts
   2.2 Geometrical and Material Properties
   2.2.1 Standardized Thread Types
   2.2.2 Bolt Types
   2.2.3 Surface Coating
   2.2.4 Property Classes and Mechanical Properties
   2.3 General Calculation Model
   2.4 Design According to VDI 2230-1
   2.5 Design According to NF E25-030-1 and NF E25-030-2
   
   
3. Focus on Interference Fits
   3.1 Tolerances and Fits According to ISO 286-1 and ISO 286-2
   3.2 Surface Characteristics and Manufacturing
   3.2.1 Surface Roughness Parameters
   3.2.2 Geometrical Dimensioning and Tolerancing (GD&T)
   3.2.3 Design Considerations
   3.2.4 Machining Processes
   3.3 General Calculation Model
   3.4 Design According to DIN 7190-1 and DIN 7190-2
   3.5 Design According to NF E22-621

Learning Outcomes:

Upon successful completion of this course, students will be able to ...

Fundamentals of Mechanical Links

• Distinguish between force-locked, form-locked, and combined force- and form-locked mechanical links
• Explain the operating principles and characteristic properties of various joining elements, including pins, bolts, rivets, keys, splined shafts, gears, interference fits, and bolted joints
• Explain the suitability of different joining methods with respect to load-carrying capacity, manufacturing effort, ease of disassembly, and application requirements.

Bolted Assemblies

• Describe the main manufacturing processes for bolts and nuts
• Explain the influence of thread geometry, material properties, surface coatings, and strength classes on the behavior of bolted joints
• Dimension bolted joints in accordance with VDI 2230-1 and NF E25-030 standards
• Assess the safety and functionality of bolted joints while considering relevant failure mechanisms.

Interference Fits

• Explain the system of tolerances and fits according to ISO 286
• Analyze the influence of surface roughness, geometrical tolerances, and manufacturing processes on the load-carrying capacity of interference fits
• Calculate contact pressures, interference values, and transmissible forces and torques using general analytical models
• Dimension interference fits in accordance with DIN 7190 and NF E22-621
• Evaluate design and manufacturing measures for improving the functional reliability of interference-fit joints.

General Competencies

• Select appropriate joining methods for specific engineering applications
• Justify design decisions based on standards, technical constraints, and economic considerations
• Solve design and verification problems for bolted joints and interference fits independently using relevant standards and design guidelines.

Workload:

regular attendance: 42 hours
self-study: 78 hours

Medien:
Skript zur Veranstaltung wird über ilias (https://ilias.studium.kit.edu/) bereitgestellt.

Media:
Lecture notes will be provided in ilias (https://ilias.studium.kit.edu/).

Vorlesungstermine montags 11:30 - 13:00 Uhr
Übungstermine montags 14:00 - 15:30 Uhr
Bekanntgabe der konkreten Übungstermine erfolgt in der ersten Vorlesung.