Aimco Brakes Freedom3 LAB User Manual

							 
 
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SPC Quality Control Test 
 
 
Breakaway Peak is a SPC quality test, selecting this kind of test Freedom³ will consider as 
a result the maximum reached torque during the “over tightening”. 
 
 
Selecting Breakaway Peak test, the result depends from the ability of operator to stop the “over-
tighten” when bolt start to move, if operator stop the tightening too late Freedom³ will take 
always the pick torque. See below to program Freedom³ for Breakaway Peak test: 
 
 
  
						

							 
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22 Freedom³ LAB mode 
Breakaway Angle is a SPC quality test, selecting this kind of test Freedom³ will consider 
as a result the reached torque after a specific angle (preset) . See the following curve for hard 
joint: 
 
 
Using this strategy, user must know after how many degree Freedom³ has to check the torque. =t’s 
important to know the behavior of the joint in order to set a “right “ angle. 
 User can use as Control Quality point the first peak or the residual point, in any case it’s important 
set the right angle value in Freedom³ Breakaway Angle program.  
As you can see, in the hard joint curve, there are two points First Peak (static Breakaway Point) 
and Residual Torque (Dynamic Breakaway point), user can select in the program which point 
Freedom³ must recognize as Breakaway point. In case of soft joint Residual Torque and First Peak 
point coincide at the same point.  
 
See the following curve for soft joint: 
 
 
 
 
 
 
 
 
 
 
 
 
  
						

							 
 
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See below to program Freedom³ for Breakaway Angle test: 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
						

							 
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24 Freedom³ LAB mode 
 
Smart Breakaway/Angle is a SPC quality test, selecting this kind of test Freedom³ 
recognize automatically the Breakaway point. In the example below it is illustrated a typical curve 
of hard joint, as you can see there are two points First Peak (static Breakaway Point) and Residual 
Torque (Dynamic Breakaway point), user can select in the program which point Freedom³ must 
recognize as Breakaway point. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Soft joint: 
 
In case of soft joint First Peak and Residual torque point coincide at the same point. 
 
 
 
  
						

							 
 
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See below to program Freedom³ for Smart Breakaway test: 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
						

							 
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26 Freedom³ LAB mode 
 
Breakaway Open/Close is a quality test, selecting this kind of test user has to unscrew 
the bolt already tightened for a specific angle (for example 10°; this parameters must be set in the 
test)  and retighten the bolt till get to the original position (for our example user has to retighten 
for 10°). Freedom³ will take as result the torque value when the bolt gets the original position. 
 
Open the bolt:      Tighten the bolt till original position: 
 
 
 
             
 
     10°        10° 
 
 
 
 
 
 
See below to program Freedom³ for Breakaway Open/Close test: 
 
  
						

							 
 
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Minimum Torque is a quality test, , selecting this kind of test, Freedom³ will check if the 
joint is already tightened or not. User has to over-tighten the bolt if the torque reached is higher 
of minimum torque target inside a specific angle (counting angle from a threshold value) the result 
of the test will be “OK”. See example below: 
 
 
 
 
 
 
 
 
 
 
In the example above the minimum check angle is 3°, in Freedom³ program is possible select angle 
value in order to optimize the test. 
See below to program Freedom³ for Minimum Torque test: 
 
 
  
						

							 
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28 Freedom³ LAB mode 
 
Joint Analysis is a quality function of Freedom³ that allows to the operator to analyze the 
behavior of the joint. User has only to tighten the bolt as much as necessary (also to the broken 
point, if it’s necessary to see torque and angle value at the broken point), during the tightening 
Freedom³ recognize automatically the yield point. User has to set the yield point parameters. With 
this function Freedom³ will edit the curve of the joint (torque/time and torque/angle) and save as 
results of test: yield torque (torque at yield point), yield angle (angle at yield point), max torque 
(max reached torque during the test), angle at max torque (angle value at max reached torque), 
angle max (max reached angle during the test), torque angle max (torque value at max angle). The 
angle threshold starts from transducer min-load value (5% of full scale). 
 
  
 
See below to program Freedom³ for Joint Analysis test: 
  
						

							 
 
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Loose Torque is a quality test, selecting this kind of test, Freedom³ will consider as a result 
the Minimum torque (or max negative torque) necessary to unscrew the bolt User must set “Start 
Torque”(from what torque value will start the test, is a negative value) and the angle test value 
(after how many degree from “Start Torque” operator has to stop the unscrewing).  
 
 
 
 
See below to program Freedom³ for Loose Torque test: 
 
 
 
Note: For this test, Freedom³ starts to count the angle at “Start Torque” point. 
  
						

							 
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30 Freedom³ LAB mode 
Tightening Production Strategy Test 
 
 
 
Fast. Torque Driven is a tightening strategy used in production line. Operator must set 
Nominal torque , tolerances and the angle window (min and max angle value). Freedom³ will give 
as a main result for the statistic the torque value, also FREEDOM³ will check if the angle value at 
pick torque is in the angle-window, if it’s not in the window the tightening status will be not ok 
(NOK). 
 
 
 
 
 
 
 
 
 
 
 
See below to program Freedom³ for Fast. Torque Driven strategy: