Machine Tool Touch Probe employs pressure sensor.

Press Release Summary:

Offering accuracy of <±1 µm with repeatability of 2σ ¯ = 0.25 µm at probing velocity of 0.25 m/min, TS 740 facilitates machined part verification. Trigger pulse is obtained via force analysis, and forces acting during probing are processed electronically. This enables consistent probe accuracy over 360°. Offering precise trigger characteristics in all directions, stylus deflection is measured by several pressure sensors arranged between contact plate and probe housing.

Original Press Release:

Unique Touch Probe for Machine Tools Uses Pressure-Sensing

SCHAUMBURG, IL – HEIDENHAIN is proud to offer the latest technology in machine tool touch probes.  Employing a pressure sensor, HEIDENHAIN’s unique TS 740 touch probe also simultaneously maintains unusually high accuracy.

The TS 740 has an accuracy of < ±1 µm with a repeatability of 2σ ¯ = 0.25 µm at a probing velocity of 0.25 m/min. With this accuracy and repeatability, machined part verification is no longer a challenge.

The trigger pulse on the TS 740 is obtained through force analysis. The forces acting during probing are processed electronically. This method provides extremely consistent probe accuracy over 360°.

With the unique TS 740, the deflection of the stylus is then measured by several pressure sensors that are arranged between the contact plate and the probe housing. (Refer to figure 2.) When probing a workpiece, the stylus is deflected so that a force acts on the sensors. The signals generated are processed and the trigger signal is produced. The relatively low probing forces provide high probe accuracy and repeatability, while offering precise trigger characteristics in all directions!

(See Figure 2) -

The TS 740 is the perfect choice for very demanding measuring tasks on machine tools.

The signals are transmitted via infrared which is also ideal for use on machines with automatic tool changers.

For more information, contact HEIDENHAIN’s Public Relations Manager Kathleen Stoneski at (847) 519-4702 ( or write to us at HEIDENHAIN CORPORATION, 333 E. State Parkway, Schaumburg, IL  60173.  HEIDENHAIN can also be accessed directly via our web site at

HEIDENHAIN CORPORATION is the North American subsidiary of DR. JOHANNES HEIDENHAIN GmbH, a leading international manufacturer of precision measurement and control equipment.  Our product line includes linear scales, rotary and angular encoders, digital readouts, digital length gages, CNC controls, and machine inspection equipment.

More from Transportation Industry Products

All Topics

COVID-19 Response Suppliers COVID-19 Response:
Can Your Company Help Provide Critical Supplies?

We are using the power of our platform to aid in the mass shortage of critical supplies. If your company can help provide supplies, capabilities, or materials for products such as N-95 Masks and Tyvek SuitsPlease let us know.

COVID-19 Response Suppliers