Zero Point Clamping System

The ZERO CLAMP zero point clamping system is the modern alternative to the conventional T-slot table: Drastically reduces the setup times and increases your machine capacity.

 

Maximum user-friendliness

Highest degree of accuracy
Repeat accuracy of less than 2.5 μm.

Simple logistics
Just one type of clamping stud.

The key benefit
Thermal symmetry.

No tilting
Uncomplicated joining and removing.

One system for the entire process chain
Milling, turning, right up to quality assurance.

-90 %

Reduce setup times by up to 90%

+ 330 h

Additional production time per year

Save

29,700 euros per year

Assumption: 2 setup processes/shift; 2 shifts; 220 work days/year; machine-hour rate €90.00

Setup processes in comparison

Conventional setup process
Time needed
100%

1. Clean the machine table
2. Clean the clamping device contact surfaces
3. Position via the slot nuts
4. Align
5. Fasten with clamping screws
6. Determine the zero points
7. Start the program
8. End the program
.

Disadvantage:
It is difficult or even impossible to interrupt the process (completely remove the component from the machine table).
→  Machine standstill or workpiece is scrapped.

ZERO CLAMP setup process
Time needed
Zeitbedarf 10%

1. Clean the machine table (reduced)
2. Clean the clamping device contact surfaces

Biggest time factor completely omitted!

3. Start the program
4. End the program

Benefit:
The process can be interrupted without a problem at any time.
→  Continued machine use.

Multiple benefits for day-to-day production work

Milling

Direct clamping of the component onto a base unit. Holes as sockets for the clamping studs are specified at the design stage. Components can be changed quickly and accurately (across all machines).

Turning

In the case of turning operations as well, the productivity increases are used to best advantage with pre-balanced base units. Maximum safety with high forces thanks to additional retaining elements.

Spark erosion

Functions reliably even under water or in dielectric. The base units are equipped with special drain holes so that the water can escape when the pots are opened.

Quality assurance

There are also setup and non-productive times during measuring which can be reduced. Furthermore, the machining process can be interrupted for intermediate measurements on the measuring machine (the clamping studs are not removed for this purpose) before continuing with the process.

The center piece

Simple assembly with few components and very high repeat accuracy for at least one million cycles!

Pneumatic System: 
Only 5.5 bar air pressure is required to release the clamping studs.

For comparison: classical systems

Difficult compensation for thermal expansion

Classical systems - Click to enlarge image
The hyperstatic interface ensures axial face contact and zero radial clearance.

Too much clearance
  

Classical systems - Click to enlarge image

Positioning via a cylindrical or conical clearance fit. 
Example of stud/socket clearance fit: 
Ø 35 h5/H5 = 22 µm.

ZERO CLAMP thermal symmetry and accuracy

Thermal symmetry –
Fixed zero point in the center of the table

ZERO CLAMP - Click to enlarge image

Compensation for thermal expansion always symmetrical about the center axis.

Fixed zero point in the center of the table: Pitch errors can be compensated up to ±0.05 mm per clamping pot.

Highest degree of accuracy –
Clearance-free fit
  

ZERO CLAMP - Click to enlarge image

Clearance-free fit enables a perfect form fit with a repeat accuracy of less than 2.5 μm.

The hyperstatic interface ensures axial face contact and zero radial clearance.

The ZERO CLAMP benefit

Easy to handle from a logistical point of view.
No differentiation between zero pins, floating pins, and free pins
Just one clamping stud type required!

Experience precision – system film

Versatile clamping pots

From standard applications to automation

Clamping pots with a clamping force of 12.5 to 60 kN. Additional variants with position monitoring function and air coupling available for automated operation. All clamping pots are available with indexing holes (anti-twist device for single use).

Do you have questions about specific products or would you like some personal advice?
We are happy to help: Tel. + 49 8062 72948-0