SMT - Chapter 2: Lesson 1 (Part 2)

Summary

This instructional video script delves into aircraft repair hand tools, focusing on cleco clamps and pliers for aligning parts prior to riveting. It demonstrates the use of cleco clamps, including spring-loaded and wingnut versions, for temporary fastening. The script also covers rivet guns, classified by weight and type, and their sets, as well as rivet cutters and bucking bars for forming rivet heads. Hand files and their techniques are briefly introduced, concluding with a thank you note.

Takeaways

• 🔧 Cleco clamps and pliers are used for aligning parts before riveting in aircraft repair.
• 📏 The collar of a cleco clamp indicates the diameter of the rivet it is designed to fit.
• 👀 Videos will demonstrate different types of cleco clamps and their installation methods.
• 🔨 An automatic center punch is used to mark the spot for drilling in sheet metal setups.
• 🚫 Over-drilling can be problematic in actual aircraft repair, but the example provided is for instructional purposes only.
• 🪝 Cleco clamps act as temporary fasteners, similar to rivets, to hold sheet metal in place during setup.
• 🔄 Spring-loaded cleco clamps may not provide enough pull for tightly aligning parts, unlike wingnut versions which offer more tension.
• 🔫 Rivet guns are powered by compressed air and are categorized as light, medium, or heavy-hitting based on their power.
• 🔩 There are two types of rivet gun sets: universal for various rivet head shapes and countersink for flush head rivets.
• ✂️ Rivet cutters are used to trim rivets to the correct length, with thickness gauges to ensure proper fit.
• 🛠 Bucking bars are essential tools for forming shop heads on solid shank rivets, available in various sizes and weights.
• 🔉 Hand files are used to smooth rough edges and burrs from finished parts before installation, with different shapes, lengths, and cuts.

Q & A

What are cleco clamps and pliers used for in aircraft repair?

Cleco clamps and pliers are used to align parts prior to being riveted to an aircraft.

How does the collar of a cleco clamp indicate its purpose?

The collar of the cleco clamp indicates the diameter of the rivet it is to be used with.

What is the purpose of using a center punch in the drilling process?

A center punch is used to mark the exact spot where the drill should go, ensuring precise hole placement.

Why is it necessary to clean out the hole after drilling in aircraft repair?

Cleaning out the hole after drilling is necessary to remove any metal shavings or debris that could affect the fit or integrity of the rivet.

How does a cleco clamp function as a temporary fastener?

A cleco clamp acts as a temporary fastener by holding parts together like a temporary rivet while the sheet metal setup is being prepared.

What is the difference between a spring-loaded cleco and a wingnut cleco?

A spring-loaded cleco provides a basic holding force, while a wingnut cleco allows for a tighter pull due to its threaded fastener.

What is the role of a rivet gun in the riveting process?

A rivet gun is used to drive rivets, and it is powered by compressed air, classified as light, medium, or heavy hitting.

What are the two types of gun sets used with rivet guns?

The two types of gun sets are the universal gun set, which fits various rivet head shapes, and the countersink gun set, which fits flush head rivets.

Why is it important to use the correct rivet length when using a rivet cutter?

Using the correct rivet length ensures that the rivet will fit properly and function as intended, avoiding issues with the rivet's grip or appearance.

What is the purpose of a bucking bar in rivet installation?

A bucking bar is used to form shop heads on solid shank rivets during installation, ensuring a proper and uniform head shape.

How are hand files used in aircraft repair?

Hand files are used to remove rough edges and silvers from finished parts before they are installed, providing a smooth and precise fit.