DPMS 3.0 – measurement directly in the machining process

High-precision diameter monitoring in the CNC machining centre

DPMS 3.0 integrates pneumatic diameter measurement directly into CNC machining centres and CNC lathes. Depending on the application, measurement takes place during machining (in-process) or before and after a machining operation.

This allows honing, reaming, fine-turning and burnishing processes to be monitored inside the machine. The objective is a stable, automated process with 100% inspection of the relevant bores.

Measurement strategies: in-process, pre- and post-measurement

Air gauging where the process takes place

DPMS 3.0 supports different measurement strategies:

  • In-process measurement: diameter acquisition during machining, for example with air-gauging honing tools.
  • Pre-measurement: checking the initial condition before a finishing operation.
  • Post-measurement: automatic acquisition of the finished diameter, for example with a separate air gauge mandrel.

This allows the measurement concept to be matched to the specific process and bore geometry.

Automatic process control

Measure, evaluate and correct the process

Measured values are transferred to the machine control and can be converted into process information and correction decisions. Adjustable tools can therefore be monitored and corrected directly in the machine.

In combination with suitable DIAHON tool systems and µ-matik, DPMS 3.0 can provide the basis for a closed-loop system for wear compensation and diameter control.

Machine integration and interfaces

Retrofit or integration into new machines

Integration is engineered for the specific machine and application. Depending on the project, PROFIBUS, PROFINET or CC-Link can be used for communication with the PLC. DPMS 3.0 is used with SIEMENS, HEIDENHAIN and FANUC controls, among others.

Mechanical integration includes the measuring-air transfer and a machine-specific torque support. The system can be implemented as a single-spindle or multi-spindle solution and can be integrated either as a retrofit or into a new machine.

Software, tool database and calibration

Clear management of measured values and measuring tools

The DPMS software visualises current measured values, target and reference lines, as well as measurement and trend curves. Measuring tools and their calibration data are managed in a tool database.

Suitable calibration rings can be assigned to each measuring tool. Required calibration can be initiated manually or automatically by the machine, closely linking measuring-equipment management with process monitoring.

Measurement data and quality assurance

100% inspection and traceable process data

DPMS 3.0 supports continuous documentation of bore quality directly from the machine. Measured values and measurement histories can be made available for quality assurance and, depending on the project, transferred to higher-level systems via MQTT or CSV.

This makes dimensional trends, limit violations and process corrections transparent and traceable.

DPMS 3.0 in series production

Proven integration on different machine platforms

DPMS installations are used in series production worldwide on machines from various manufacturers, including platforms from MAKINO, COMAU, HELLER, DMG MORI, GROB and STARRAG HECKERT.

The specific configuration is matched to the machine, component, measuring task and required level of automation. Talk to DIAHON about the right integration for your bore machining process.