Finite Element Analysis showing a cross section of a Tog-L-Loc joint being created.

Typical Tooling Configuration. (Click for larger view)

Cross Section view of a completed Tog-L-Loc joint

Die side (left) and Punch side (right) views of completed Tog-L-Loc joints

Punch side view of joints created in pre-painted metal

Die side view of joints created in a part using a dissimilar metal combination

Use BTM's Tog-L-Loc Clinching Process

to Assemble Sheet Metal Parts like these:

with this Clinch Equipment:
For an Existing Press:		Manually Positioned:
Units for Robots/Fixtures/Systems:		Custom Solutions:
can TOG-L-LOC join your part?:
Step 1 Click Here to fill out a short form A BTM Application Engineer will contact you to let you know if Tog-L-Loc will clinch your material. Step 2 Send us a drawing of your part Drawings, solid models, or even hand sketches can be sent by email, Fax, or uploaded to our FTP Site. Contact a BTM Application Engineer by phone at 810-364-4567, by fax at 810-364-4125 or email sales@btmcorp.com BTM is on Eastern Time (same as New York) and is open from 8:00-4:30PM (1630)

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.

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 Step 2 Step 3

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.

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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