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Tog-L-Loc is a cold-forming clinch process which uses a special punch and die to form a strong interlocking joint within the metals themselves. The result of the process is a round, button shaped extrusion on the die side of the assembly, and a small cylindrical cavity on the punch side. The joint is comprised wholly of the sheet metals that were joined. No external fasteners, or welding is utilized in the process.
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Joins plain, coated, and dissimilar metals
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No rivets, screws, or other fasteners
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Eliminates spot welding operations
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Long tool life: 300,000 joints common
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Joins in a single press stroke
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Non-Destructive testing with a simple gage
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Strong and highly fatigue resistant
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Leakproof joints
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No sparks, fumes, or soot
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A typical Tog-L-Loc joint is created in under a second and features three basic steps as shown in this cross section diagram:
Step 1 (Clamps): A punch side stripper clamps the metals to be joined.
Step 2 (Draws):
Once the metals have been clamped by the stripper, a punch draws a section of the metals into a die.
Step 3 (Locks): A
Tog-L-Loc die has moving blades which expand, allowing the metals to flow into a strong interlock. The end result is a vibration resistant, leakproof joint which was created without the use of external fasteners.
Where It Is Used
The Tog-L-Loc joining method is relied upon and trusted by industries around the world manufacturing a diverse range of products. From pre-painted microwave housings to delicate solar collectors, automotive hoods, heat shields, ductwork, garage doors, small electrical components, and even steel frame housing, Tog-L-Loc has become a trusted name in sheet metal joining. Contact BTM today to see how Tog-L-Loc can benefit your application.
Here are just a few examples of industries using Tog-L-Loc. Click an industry to see product examples.
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