Tolerance

An important issue even today. What is tolerance? Who defines the tolerance? The tolerance is directly related to truth and freedom …
Cut:

Before I become philosophical here … Back to pikchain®:

One of the questions about pikchain® that keeps coming back: How high is the tolerance of pikchain®, and the positional accuracy?

Well, the pikchain® has a positional accuracy of about 1 mm. The size is similar in width, maybe a bit less, but again we need a certain buffer so that the chain can still proceed freely and does not clamp.

Do you want to have a lower tolerance? Do you want to position more accurately?
Of course, the pikchain® can also become intolerant, or it can be positioned precisely in all axes.

It would then work, for instance, like this:

In order to obtain a desired position tolerance in height and width, the tool holder on the pikchain® is spring mounted. This tool holder is given a running carriage, which in turn enters into an adjustable roller guide. This roller guide is set for the desired tolerance once. Ready!
See also drawing.

We also have a solution for the positional accuracy in the longitudinal axis. The above-described tool holder gets a lateral bore into which a position mandrel can enter from the outside and keep the chain in position during the operation of the corresponding tool (e.g. drills). Ready!

You see: If we want, we can be damned intolerant. Otherwise we remain tolerant, freedom-loving Rhinelanders!

 

Just before the positioning  In Position!

  1. Guide roller unit
  2. Guide roller unit
  3. Guide pin
  4. Insertable carriage
  5. Positioning hole
  6. Spring-mounted tool holder
 

pikchain®: Driven by passion, part 2

…and again a new type!

igus® tries always and anywhere to create the components in a modular way. Each product should fit to the other product within the igus product range.

The same should be for the pikchain®. That’s the reason why we improved the pikchain®-drive.

Instead of one single main rear sprocket with a certain diameter we changed to multiple, smaller sprockets.

The inconvenience of a single rear sprocket: The diameter defines the diameter of the pikchain®. If you need a different diameter for the pikchain®, you also need a new rear sprocket, and this new rear sprocket also has to fit to the pitch of the pikchain®. Too complicated and too inflexible.
We are now very flexible with the new arrangement of the smaller sprockets. With only one type of sprocket, we can design more or less any diameter of the pikchain®. And of course it fits also to the pikchains® pitch.

You see the principle and the arrangement of the sprockets in the drawing.

Of course, don’t hesitate to contact me for further information.

Shall it be a little bit more?

Can you imagine that! A pikchain®, mounted on side, axis distance 35 meters and a height of 400 mm for the c-chain? No?
We do! But we have tested it before to be sure! See video.

You see, that this project has nothing to do with our tiny show pikchain®, which we have presented this year during so many trade shows. But the functional principle is absolutely the same.

We combine a slip ring/rotary union with an energy chain, which can now run, endless and continuously and which is connected to the conveyor chain, to say pikchain®. This principle works with small or big chains from igus®, or in this case for size XXL. Basically, any chain from igus can become a c-chain and so an important component for the pikchain®.

Shall it be a little bit more? I mean more information about that XXL pikchain? Just call me or write me an E-Mail. I will be happy to answer your questions.

Who wants to live forever? Answer: The pikchain®

Since 18 months two trade show pikchains® from us are running tirelessly on different national and international trade shows, without any failures and without

considerable wear. Thousands of kilometres have been achieved already.

Who wants to live forever Answer The pikchain®

But: We want to know all the facts and so we did some tests. Result:

1. Our pikchain® machine which is running between Trade Shows also in our laboratory has reached more than 20.000 km, and as already mentioned without failures and without considerable wear.
2. We wanted to know how much a pikchain® link can stand. So we put a much higher accepted load (ten times more) on the middle (most sensitive area) of the pikchain® link and even after 2 Million strokes there is no wear, no cracks, nothing! We will keep on testing.
3. We made a test to evaluate the breaking load. Even with more than 100 times the accepted load the link did not break.

The picture shows the pikchain® running over/under the rear sprocket. This is the moment when the pikchain® experiences the highest load.

The pikchain® lasts (for ever)