Mechanical Fastening

Definition

Mechanical fastening refers to the process of joining two or more components together using physical methods such as bolts, screws, rivets, or clamps. This technique is essential in ensuring the structural integrity and stability of assembled parts, particularly in applications where reliability and strength are crucial. Mechanical fastening plays a key role in the assembly of 3D printed parts, allowing for effective connections that can withstand stress and provide ease of disassembly when needed.

5 Must Know Facts For Your Next Test

1. Mechanical fastening provides a strong and reliable way to join parts, making it ideal for applications in industries like aerospace and automotive.
2. Different types of mechanical fasteners serve various purposes; for example, screws are commonly used for their ease of use and disassembly, while rivets are chosen for their permanent nature.
3. When assembling 3D printed parts, the alignment and fit of mechanical fasteners are critical because 3D printed components may have variations in tolerance due to the printing process.
4. Mechanical fastening allows for easy repairs and modifications since components can be removed and reassembled without damaging the parts.
5. Fasteners can influence the overall design of a 3D printed part; considerations such as weight distribution and material selection can affect how well mechanical fastening integrates with the printed component.

Review Questions

• How does mechanical fastening contribute to the assembly process of 3D printed parts?
  • Mechanical fastening is crucial for the assembly of 3D printed parts because it provides strong connections that maintain structural integrity. By using bolts, screws, or other fasteners, these components can be securely joined to withstand various loads and stresses. Additionally, this method allows for disassembly if repairs or modifications are needed, which is particularly beneficial in applications where maintenance is important.
• Compare mechanical fastening with adhesive bonding in the context of assembling 3D printed parts. What are the advantages and disadvantages of each method?
  • Mechanical fastening offers quick assembly and disassembly options compared to adhesive bonding, which often requires curing time and can create permanent bonds. While mechanical fasteners can be reused and adjusted as needed, adhesive bonding can provide better stress distribution over surfaces. However, adhesives may not perform as well under high temperatures or heavy loads. The choice between these methods depends on the specific requirements of the assembly, including strength needs, material compatibility, and whether future disassembly will be necessary.
• Evaluate the implications of using mechanical fastening techniques on the design considerations of 3D printed components.
  • When designing 3D printed components with mechanical fastening techniques in mind, several implications arise. Designers must consider tolerances to ensure that fasteners fit correctly within the assembled parts. Additionally, they need to account for weight distribution and how the added mechanical fasteners may influence overall performance. Material selection is also critical; some materials may not hold up well under certain types of fasteners or loads. Thus, integrating mechanical fastening into design requires a careful balance between functional requirements and manufacturing capabilities.

Related terms

Adhesive Bonding: A method of joining materials using a glue or adhesive to create a bond between surfaces, which can complement or replace mechanical fastening.

Tolerances: The allowable limits of variation in a physical dimension, which are critical for ensuring that mechanical fasteners fit correctly and perform effectively.

Assembly Fixtures: Tools or devices used to hold components in place during the assembly process, often necessary when using mechanical fastening techniques.