Profile Joints – Part 6
In this, our sixth in a series of posts on aluminium profile joints, we talk about a sliding clamp. Although not strictly an Alusic product or a joint type, it is something we developed to use with the Alusic range of extruded aluminium profiles.
Imagine that you have machine frame constructed using aluminium extrusion, and you need a stop for some part of the machine’s function. Now imagine that you need to move that stop on a semi regular basis (eg: a number of times a day). It would be nice to be able to just grab a handle, release the stop, slide it to a new position, and clamp the stop in place. No need to go looking for a spanner or a hex key to undo clamping bolts, etc. etc..
Well, we have just the thing. At least we think we do. You’re free to decide for yourself.
The concept works with any t-slot extruded aluminium profile. In this example we are using an M8x45* lobed knob (1077.36), an M8x25 rectangular nut (084.302.011), a length of 3 slot 40×40 extruded profile (084.102.005), and a piece of 50x50x5 square hollow section.
The crux of the concept though, is the lobed knob and the rectangular nut in the t-slot. The rectangular nut readily slides in the t-slot of the profile until the knob thread is tightened. Even hand tightening the knob provides enough grip to very effectively clamp the slider in place.
The slider component need not be a hollow section like we’ve used in this example. The hollow section is ideal if your application calls for something like a telescoping arm or leg. The slider could just as easily be a piece of angle as shown below.
One example of an ideal use case for a sliding clamp is as a movable stop on our Portable Saw Bench. If you already have a saw bench, retro-fitting a sliding stop could be as simple as bolting a length of t-slot profile to your bench. For example, 18.5×32 (084.101.003) has a single 8mm slot perfect for a rectangular nut.
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