BTM - Tog-L-Loc®

Tog-L-Loc®

Description
How it works
Where It Is Used

Tog-L-Loc^® is sheet metal joining or "clinching" made simple. Whether joining plain, painted or coated sheet metal parts with BTM's patented Tog-L-Loc^® sheet metal joining system there are no fasteners, sparks, or fumes. Fast, economical and consistent, the Tog-L-Loc^® joining technique is used worldwide to assemble automobile parts, appliances and more. From simple tooling to high speed automation, BTM provides solutions for your sheet metal assembly requirements.

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

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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 This e-mail address is being protected from spambots. You need JavaScript enabled to view it

BTM is on Eastern Time (same as New York) and is open from 8:00-4:30PM (1630)

What is Tog-L-Loc^®?

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.

Joins plain, coated, and dissimilar metals
No rivets, screws, or other fasteners
Eliminates spot welding operations
Long tool life: 300,000 joints common
Joins in a single press stroke
Non-Destructive testing with a simple gage
Strong and highly fatigue resistant
Leakproof joints
No sparks, fumes, or soot

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

Typical Tooling Configuration.
(Click for larger view)

tl-iso-crossection

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

punch_button

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

pre-paint

Punch side view of joints created in pre-painted metal

dissimilar

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

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.

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.