| Touch Probes for Tool
Measurement and Inspection
| |
The TT
is a three-dimensional touch trigger probe for measuring and
inspecting tools within the working space of the machine. The
trigger signal is formed through a highly reliable, wear-free
optical sensor.
Tool Measurement
If the appropriate functions
are integrated in the NC control, It can use the TT to measure tool
length and diameter, including the length and
diameters of individual teeth. The NC automatically
saves the results of measurement in the tool tables. With the TT,
the NC system can measure tool wear during
machining and automatically compensate it during subsequent
machining. Finally, the TT makes it possible to check mounted
tools for breakage before use.
The TT is fastened in a T-slot of the machine table by a bolt
through an adapter. Since the probe contact is pre-aligned to
the mounting surface, no further adjustment is required.
Alternatively, the TT can be mounted by fixing clamps.
The standard disk probe contact assures protection against
collision because the diameter of the touch probe housing is
smaller than the disk diameter. If smaller probe contacts are
used, collision protection is provided by the housing cap. The
TT three-dimensional touch probe features an IP 67
degree of protection.
No alignment is required when
replacing the probe contact. It is simply screwed into a
precision guide in the touch probe.
The TT 120 is designed for connection to HEIDENHAIN
contouring controls of the TNC 400 series.
The TT 130 is for
connection to NC controls with 15-V touch probe input. |
| |
 |
Illustration:
TT 120 |
| |
| |
TT
120/ TT 130 |
| Probe
repeatability |
< 1
µm |
| Permissible
deflection of the probe contact |
Approx.
5 mm in any direction |
| Power
supply |
TT
120: 5 V ± 5 % via NC
TT 130: 10 to 30 V via NC |
| Interface
to the NC control |
| TT
120: |
Signal
levels at 5 V rated voltage: |
| |
UH
>= 2.5 V with – IH <= 20 mA,
UL <= 0.5 V with IH <= 20 mA |
| TT
130: |
Signal
levels at 24 V rated voltage: |
| |
UH
>= 20 V with – IH <= 20 mA,
UL <= 2.8 V with IL <= 20 mA |
|
| Probe
contact |
Hardened
steel disk, dia. 40 mm |
Degree
of protection
(IEC 529) |
IP
67 |
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