The concept of the combined claw and step jaw can only work if the dimensions are adapted to your part spectrum. Therefore, this version is not available from stock but exclusively as custom made.
Here you will find out which criteria are important for the selection of the clamping depths as well as practical tips for maximum flexibility.
Questions to help you choose:
1> Which component sizes are mainly running?
The smaller the overall thickness of the smallest components to be manufactured, the lower the clamping depth of the claw stage should be chosen to provide more depth for the smooth step.
Our tip: First of all, think of the main business of the relevant vise. The idea to have considered all the components seems reasonable at first – however, it makes no sense to stretch 70% of the much larger parts to 7mm, only to be able to cover a 12mm thick strip every 8 weeks.
2> Which forces occur during chipping?
Point 1 raises the question of the “type” of machining. You can easily select low clamping depths for high flexibility and still clamp large workpieces, if eg. only sifted or engraved. However, when rigged and drilled with a lot of power, flexibility should be less of an issue.
3> Series or items?
In the production of single parts it is primarily important to keep non-productive times as low as possible. Since the programs are retracted at the “single” component, high machining rates play a lesser role in terms of production time. When selecting the smooth step, you can therefore choose lower clamping depths.
Although series production requires high machining rates for short program times, it has the advantage of adapting the jaw to the specific component. It does not matter if you can make 20 different series parts with one jaw if the resulting versatility jeopardizes safe clamping and thus the process. Customers often buy a special set of jaws for each series (assuming appropriate number of pieces and geometry) after a few attempts.
As a rule, the investment costs are already covered or exceeded by the saved material costs.
4> How many vices are permanently mounted?
This point is dedicated to u.a. the question that you ask yourself after the first 3 points:
How flexible can I still be if 25% of my workpieces are too small for the now determined jaw?
If that’s the case, we’ve already taken a first hurdle: we’ve cut your vise setup costs by 75%. :O)
Instead of covering as many dimensions as possible with one set of jaws, it is often much easier to equip several vices with different clamping depths.
This allows you to achieve significantly better clamping conditions and additionally increase the coverage of the parts spectrum.
Are you wondering how the clamping process works? Information on this can be found in the article:
How do claw jaws work with double stage?
Not convinced yet? Here you can find out why the change is worthwhile:
Why switch to claw jaws with double stage?
You want to send a request but need support?
Solution 1: I advise you by phone under 0176-61470064 (Marcus Reifenröther)
Solution 2: Use our online inquiry form> to the form