Wired Touch-Probe for CNC Lathes and Special Purpose Machines [K2A Series]

Wired Touch-Probe for CNC Lathes K2A Series

Measuring inner and outer diameters and end faces of workpieces on CNC lathes and small multitasking machines in general

The K2A series is a wired touch-probe mounted on a CNC lathe to measure the inside/outside diameter, and end face of a workpiece.

Detecting Direction: ±X，Z 3-Direction type (with pretravel)

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Features

1μm repeatability, durability of 3 million cycles

Operates at the moment the touch-probe contacts the workpiece, enabling highly precise position detection.

No directional variation

By limiting the detection direction to three, differences in sensitivity (directional characteristics) are minimized, and detection differences in the ±X direction are minimized, enabling highly precise detection.

Built-in I/F unit

An I/F unit is equipped as standard to prevent damage to the touch-probe due to in-machine shocks and vibrations or sudden overcurrent from external sources. Also, the I/F unit can be attached externally as an option.

High water and dust resistance with IP67 protection rating

Applicable for use in adverse environments with splashing water, oil, coolant, and chips.

Resistant to vibration due to pre-travel (PT)*.

(*Pre-travel: the amount of movement from the time the touch-probe contacts the work to the time the output switches)

Wide variety of optional items

Stylus, mounting method, cord length, and other options can be selected.

Principle Structure

By placing the touch-probe on the stylus tip against the workpiece or table, a high-precision ON/OFF signal is output, which can be input to NC/PC equipment.

Built-in high-precision, high-durability touch switch is activated by stylus movement.

Because of the pre-travel, false signals and chattering due to vibration and shock do not occur.
Touch-probes are made of low-electrical resistance material for long life.
There is no change in contact force based on the direction of detection.
It supports both NC and NO (Open and Closed) contact structures.
Pre-travel and homing errors do not affect repeatability.

Main Specifications

Product Category	Wired touch-probe
Applications	CNC lathes
Purpose of use	Measuring inner and outer diameters and end faces of workpieces
Direction	±X、Z 3direction
Repeatability	0.001mm (Recommended operating speed of 50 - 200mm/min)
Protective structure	IP67
Contact life time	3 million
Pretravel	X=0.6mm　Z=0.1mm
Stroke	X=±8mm　Z=4mm *with stylus F635
Contact Force	X=1N　Z=2.5N
Stylus material	Tungsten carbide ball
Cable	Oil resistant φ5 / 4 cores　 Tensile strength 30N, Minimum bending R7
LED lump	Default : LED OFF Operating : LED ON
Contact structure	NC (Normally closed)
Output mode	NC (Normally closed)
I/F unit	Built-in (It can be attached externally as an option.)
Contact rating	DC5V - DC24V　Steady Current: 10mA or less　 Rush Current: 20mA or less *Limit the LED forward current below 10mA.
Operating temperature range	0 - 60℃　(Ice free) （CL-1F operating temperature range：0 - 50℃）
(Over travel signal) Contact structure	-
(Over travel signal) Contact rating	-
Accessories	Spanner for a stylus I/F unit CL-1F（only for external I/F unit）

Circuit Diagram (Standard model)

Note:

Intended coolant used is water-soluble coolant (alkaline).
Do not use at an operating speed of 10 mm/min or less.

Options

Customization

The blue line part can be customized. Please refer to our brochurefor details.

Standard Model

*This is the part number of the standard specification of the K2A series.
If you have not determined any specific specifications, please contact us about the following part number.

Product No.	Direction of detection	Contact force	Repeatability	Protective structure	Contact life time	CAD
K2A-ST1	±X、Z 3-direction	X=1N Z=2.5N	0.001mm	IP67	3 million	CAD(DXF)