DNC56 is a non-contact laser tool setter designed for automated cutting tool measurement on CNC machining centers. A laser beam passes between opposing transmitter and receiver units. When a tool interrupts the beam, suitable CNC measuring cycles can process the signal to determine tool dimensions or identify a broken tool.

The DNC56 supports tool diameters from 0.06 to 50 mm and specifies repeatability below 1 μm (2σ). Its 680 nm laser has a stated output below 1 mW. An adjustable mounting base helps align the beam during installation, while a 6 mm pneumatic connection accommodates an air supply within the specified 43–87 psi range.

The unit operates from a 24 V DC supply and uses an 8 m oil-resistant, shielded eight-core cable. Its aluminum housing has an IP68 sealing rating. Qidu provides guidance for mounting, electrical interfaces, CNC measurement macros and commissioning. Machine clearance, probing cycles and signal requirements should be verified before installation.

Model	DNC56
Product Type	Non-Contact Laser Tool Setter
Tool Diameter Measurement Range	Ø0.06–50 mm
Repeatability (2σ)	Below 1 μm
Laser Wavelength	680 nm
Laser Output Power	Below 1 mW
Laser Beam Alignment	Mounting Base Adjustment
Supply Voltage	24 V DC
Specified Supply Current	100 mA
Output Signal Maximum Current	100 mA
Output Signal Maximum Voltage	36 V
Signal Transmission	Wired
Signal Cable	8 m, Oil-Resistant, Shielded, 8-Core
Pneumatic Tube Diameter	6 mm
Pneumatic Supply Pressure	43–87 psi
Specified Cycle Life	More Than 1 Million Cycles
Sealing Rating	IP68
Body Material	Aerospace-Grade Aluminum
Storage Temperature	−10°C to +70°C
Operating Temperature	+5°C to +50°C

What is the Qidu DNC56 laser tool setter?

The Qidu DNC56 is a non-contact laser tool measurement system designed for CNC machining centers. It uses an optical beam between opposing heads to detect cutting tools during programmed measurement cycles. The system can support tool length measurement, diameter measurement and broken-tool checks with suitable CNC software.
What cutting tool diameters can the DNC56 measure?

The published tool diameter measurement range is Ø0.06–50 mm. Suitability for a specific tool depends on geometry, setup, calibration and available measurement routines.
What is the repeatability of the DNC56?

The DNC56 has specified repeatability below 1 μm (2σ). The supplied specification does not state the detailed test conditions. Repeatability indicates measurement consistency and should not be interpreted as absolute tool measurement accuracy.
Can the DNC56 measure both tool length and diameter?

The laser measurement system can support both functions when the CNC controller has appropriate measurement cycles. The available functions should be confirmed according to the controller, software and application configuration.
Does the DNC56 support tool breakage detection?

Yes, when integrated with suitable tool inspection programs. The system can detect beam interruptions and support measurement routines that compare tool dimensions against established reference values.
What type of laser does the DNC56 use?

The DNC56 uses a laser with a specified wavelength of 680 nm and output power below 1 mW. Laser warning markings are visible on the housing. Applicable laser safety classification and documentation should be confirmed for the delivered configuration.
Does the DNC56 require compressed air?

The published specification includes a 6 mm pneumatic connection and an operating pressure range of 43–87 psi. Clean, regulated air and correct installation are important considerations for maintaining the optical system.
What is the difference between the DNC56 and DNC86?

The primary published difference is their supported tool diameter range. DNC56 supports Ø0.06–50 mm, while DNC86 supports Ø0.06–80 mm. Both are specified with repeatability below 1 μm (2σ), a 680 nm laser and IP68 sealing.
What is the difference between DNC56 and a contact tool setter?

The DNC56 measures cutting tools optically without requiring the tool to touch a measuring pad. A contact tool setter uses a mechanical sensing surface to generate a trigger signal. The appropriate choice depends on the required measurements, machine configuration, available installation space and CNC measurement software.
What power supply does the DNC56 require?

The published electrical supply specification is 24 V DC with a stated current of 100 mA. Output signal limits are specified as 100 mA maximum current and 36 V maximum voltage. The electrical output configuration must be confirmed before connection to a CNC controller.
Can the DNC56 work with FANUC or Siemens controllers?

Qidu provides CNC integration support for major controller platforms, including FANUC and Siemens. Compatibility of the DNC56 with a particular machine must be verified against its electrical interface, measurement macros, controller configuration and available machine functions.

Specification	DNC56	DNC86	DNC168
Tool Diameter Range	Ø0.06–50 mm	Ø0.06–80 mm	Ø0.1–160 mm
Repeatability (2σ)	Below 1 μm	Below 1 μm	Below 1 μm
Laser Wavelength	680 nm	680 nm	680 nm
Laser Power	Below 1 mW	Below 1 mW	Below 1 mW
Supply Voltage	24 V DC	24 V DC	24 V DC
Signal Cable	8 m, Shielded	8 m, Shielded	8 m, Shielded
Pneumatic Pressurev	43–87 psi	43–87 psi	43–87 psi
Sealing Rating	IP68	IP68	IP68