What is the Zero Point System?

This revolutionary technology allows you to fix, position and clamp in a single step, cutting set up times by up to 90%. Available with either pneumatic or hydraulic release, these positive locking and locating modules allow operators to quickly change out large and small fixtures with extreme accuracy and minimal effort.

Quickly and accurately locate and clamp vises or fixtures, and with pull studs attached to your part, direct mount your component for machining or welding without interference from jaws or clamps. That’s the beauty of what Jergens Zero Point System can deliver (Jergens, Inc.).

How does the Zero Point System work?

Similar to the mechanism that grips rotary toolholders on many machining centers, zero- point clamps employ a pull stud and clamping balls to pull a pallet, fixture or other workholding device—or even the part itself—against the ground face of a zero-point module.

The pull stud sits inside the chuck bore and offers positional accuracy to within a few ten- thousandths of an inch and high clamping forces until released through mechanical, hydraulic or pneumatic pressure (Cutting Tool Engineering).

Play

Self-Guiding Tapered Profile

The self-guiding, tapered profile of the mounting stud allows heavy plates to be installed more easily.

Alignment

The Jergens Zero Point System’s unique design eliminates the need for perfect lifts on entry and exit.

Positive, Mechanical Locking System

Experience high holding force without the need to maintain hydraulic or pneumatic pressure.

Large Ball Diameter

Provides increased strength and even load distribution.

No Ball Cage

Free movement of the bearing balls reduces friction.

Form Fit Ball Channel

The self-guiding, tapered profile of the mounting stud allows heavy plates to be installed more easily.

Three-Point Load Distribution

Equal load spacing optimizes force distribution.

Integrated Safety System

Process-sure clamping module can always be opened, eliminating the need to forcibly remove modules if a failure should occur.

ZPS Frequently Asked Questions

The pull-in force describes the force with which the stud is pulled in and clamped with positive interlocking in the clamping module. The holding force, in contrast, specifies the maximum permissible pull force of the engagement screw.

The repeatability specifies the tolerance range within which the recorded reference points on the workpiece lie after removal and re-clamping of the same workpiece. The repeatability, also called repetition accuracy, is below 0.005mm.

These different types of pull-studs offset the spacing tolerances of pull-studs and clamping modules. The fixed reference point is achieved through the zero-point pull-stud; the timing pull-stud serves to compensate for the remaining free axis. The under-size pull-stud does not have a locating function, but only a clamping and holding function.

The high costs for chucking fixtures and workpiece clamping can be effectively saved here if the pull-studs are mounted in the workpiece, which is clamped directly using the clamping modules. As a result, a complete 5-sided processing of the workpiece is possible in one chucking. With the different stud sizes (attaching thread M6 to M16), workpieces of different sizes can be clamped.

The permissible spacing tolerance of pull-studs and clamping modules is +/- 0.01 mm.

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Especially when injection molds are changed frequently, the costs for a zero-point solution are amortized within the shortest of times for such machines. Unlike with mechanical clamps, clamping takes place quickly and easily just by pressing a button.

The maximum processing temperature is 80°C in the standard design. Clamping modules for use at higher temperatures can be requested at any time.

Blow-out using compressed air is guided through the floor of the clamping module and blows out contamination, such as chips or coolant.

If the piston seal begins to leak, the spring space quickly fills with oil. The result is: The piston blocks and the module can no longer be opened. Destruction of the clamped fixture of the of clamping module would then be unavoidable. Here, the safety system ensures that the oil in the spring space can escape and the piston can be operated.