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TOX®-ToolCheck
Data sheet 80.06
2017 / 02

TOX® PRESSOTECHNIK GmbH & Co. KG, Riedstrasse 4, 88250 Weingarten / Germany
Find your local contact at: www.tox.com
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TOX®-ToolCheck.............................................................................................................................................................

Pneumatic testing of clinching dies
The die monitoring system TOX®-ToolCheck, together withthe process monitoring, checks the condition of the TOX®Clinching Dies. This ensures that the joining process is always performed with an intact die. Any potential defects (likemissing or e.g. by contamination jammed moving elementsof the SKB die, as well as ruptures on either the solid TOX®Die or on the fixed segments of SKB) are identified within< 1 second.
Functional principle
Every clinching die has a flow resistance characteristic dependent on its geometry when a jet of compressed air isapplied. A defect in the die reduces this flow resistance andthus the back pressure of the air jet. An error signal is generated when a defined back pressure value is not reached.
The system’s robustness results from the significant dropof the back pressure in the defective die (as shown in thediagrams below).

Punch

Optimum production reliability A cost effective, robust and compact system with a control quality which was previously not possible
 Already the first defective part can be identified
 In contrast to trend monitoring, a conclusion can bereached after only one measurement
Optimum productivity
 Maximum tool life usage, since a preventive die change
is no longer required
Evaluation
A change of the dynamic pressure is reliably detected withthe TOX®-ToolCheck die monitoring. The measured value ofthe dynamic pressure is evaluated by means of the robot
control, PLC or ideally with the TOX®-Process Monitoring.
Typically, the dies are checked after each joining of a piecepart during an auxiliary process time, e. g. when changing
the piece part in the appliance. This way, the process times
for the die monitoring are not included in the cycle time of
the actual clinching process.

Compressed airTOX®-Tongs
TOX®-Process
Monitoring
StripperDie

TOX®-SKB Die
Influence of defects on back pressure

Solid TOX®-Die
Back pressure for various defects

2.00

Defect 45°
5.00

without defect

4.00

3.00

1.00
1 fixed segment missing

0.50
1 moving segment missing
0.00

Back pressure (bar)Back pressure (bar)

1.50

2.00

1.00

0.00
0° 5° 10°

SKB joint: 8 mm20°30°

Defect (degrees)2

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TB 80.06_201702.en

45°... 360°

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Mobile die check type ZCM
Application
Everywhere where TOX®-Standard Stripper can be used:
at mobile or stationary C-bows, handheld or robot tongs,
presses with pneumohydraulic, hydraulic or electric drive, in
single- or multipoint-tooling.

Advantages
 Compact, integrated in the assembly Measuring cycle < 1 s possible for tongs applications
 Can be retrofitted

Function
The dynamic pressure is applied by means of a TOX®-Stripper CSRP. The stripper is moved onto the die in a control
stroke and compressed air is then applied. The dynamic
pressure is measured and issued as an electric signal directly to the evaluating control, depending on the state ofthe die.

Mobile die monitoring ZCM on TOX®-Tongs

Ordering description: ZCM
Each die check type ZCM includes the anti-rotation fixture, additional components and the stripper required for theused application.

Additionalcomponents

Anti-rotation fixture

Stripper CSRP

TB 80.06_201702.en

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Stationary die check type ZCTApplication range
For applications where the mobile die monitoring ZCM cannot be used due to interference contours in the tool room.

Function
The die monitoring ZCT is installed within reach of the robot.
The robot positions the TOX®-Tongs with the die on the testhead unit. Compressed air is then applied to the test head.
The resulting dynamic pressure is issued as an electric signal directly to the evaluating control, depending on the stateof the die.

Advantages
 Several tools can be checked by one centralized checkstation
 Minimizes any interference with the work-piece in thetool area of the tongs

Ordering description: ZCT
Each die check type ZCT includes the pedestal, evaluation
unit or integrated control system and the check head unit.

TOX®-Tongs

Evaluation unit orcontrol system

Punch
stripperPedestal

Check head unit
Stationary die monitoring ZCT4

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TB 80.06_201702.en

Subject to technical modifications.