Aimco Brakes Freedom3 SPC Sqnet User Manual
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[email protected] 41 Loose Torque Test =t’s a Quality Control test, selecting this test Freedom³ will consider as result the torque value for loosening of joint for a specific angle. The goal of this test is to see the torque necessary to unscrew a joint. To fill all fields see the table “field and meaning”. Loose Angle (°) =t’s the angle (measured from the wrench min-load) where Freedom³ will collect the torque result. Counterclockwise only for Left Hand Joints. The test result will be ok (in order) if the torque reading (at the angle specified in the settings) is in the windows tolerance. Note To perform this test, user must to unscrew the bolt. Usually it’s necessary to move the wrench in counter clockwise, then all the parameter to fill in the test table, are referred to a counter clockwise movement.
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Edit and Link Tightening Strategy to Locations
By SQnet is possible to link one tightening strategy to every single location, in order to upload to
SQnet production tightening test results and status.
In this paragraph we explain how to edit and link tightening strategy to a location, step by step:
- From “Test Definition” window, select the location (operation) where you wants to link
the tightening strategy, then select “Production” tab Click on the bottom.
- Once “Production” tab is selected on the bottom part of the window will
appear 2 icons:
Select location
[email protected] 43 Edit new tightening program Delete tightening program Click on “Edit” icon to create a new tightening program.
44 - A new window will appear User has to fill all parameters in order to set the correct tightening operation, please see the table in the next page. Fields and Meaning Table for “Freedom wrenches tightening program definition” General Data Tab:
[email protected] 45 Fields Meaning Tightening Type In this combo box user must choose the right strategy to use during the tightening: Torque + Angle; Torque with Angle Monitoring; Torque + Angle CCW; Torque with Angle monitoring CCW; Yield; Yield + Angle. See next paragraph for more details Operation Type In this combo box user must indicate which operation he has to do during the tightening: tighten; loosen; Loosen and Tighten; Bidirectional. Station Id Here , user can write the identification number of the station where the joint is located. This field is not mandatory Nominal Torque In this field, user must write the torque target to reach during the tightening. Nm (Measure Unit) Clicking on this combo box, user can change the measure unit, actually the measure available are: cNm; Nm; kgfm; ozf.in; kNm; lbf.ft; lbf.in Class (torque) In this combo box is possible to select tolerance classes for the tightening strategy. If user wants to create a new one, click on “+”and a new window will appear, fill all fields and press “confirm” to save it. Min and Max Torque =f user doesn’t want to define tolerance limits by Class combo box, also it’s possible to insert upper (max) and lower (min) limits manually writing the values in both fields. Threshold =t’s the torque value where Freedom3 starts to count the angle. Nominal Angle =t’s the angle target value that user has to reach during the tightening.
46 Fields Meaning Class In this combo box is possible to select tolerance classes for the tightening strategy. If user wants to create a new one, click on “+”and a new window will appear, fill all fields and press “confirm” to save it. Min and Max Angle =f user doesn’t want to define tolerance limits by Class combo box, also it’s possible to insert upper (max) and lower (min) limits manually writing the values in both fields. Min Angle to Min Torque This parameters is used to inform operator when he is tightening a screw already tighteneT (only for PRW firmware version). User has to fill the degree value and Fredoom
[email protected] 47 Fields Meaning Un-Tightening Angle This is a negative angle parameter(Counter Clock wise Angle). Available only for PRW firmware version. Freedom³ realizes that joint is un-tightened only if, during the “unscrewing”, once overtake the open start cycle, the angle read at the end of Un- tightening is higher than 1.5°. The angle written in this field, indicates after how many degree the short time-out will be enabled. See paragraph….. for more info Long Time-Out* This parameter is in milliseconds. It is used from the wrench to understand when test is finished (especially when user has many resumptions). When user starts to tighten and the torque overtakes the min-load of his transducer (usually 5% of full scale) but torque doesn’t reach 75% of target torque, long time- out is enabled, that means all times torque goes back under min-load (especially between tightening steps) Freedom³ starts to count time. If the time break is higher than “Long Time Out”, the wrench will consider as result of the test the peak reached inside 75% of Target Torque. If the time break is lower than Long Time Out and torque overtakes 75% of Target Torque, Long Time-Out is disabled and Short Time-Out is enabled, see next point. Short Time-Out* This parameter is in milliseconds. It is used from the wrench to understand when test is finished. When user overtakes 75% of Target Torque, Short Time-Out is enabled, that means all times torque goes back to zero, Freedom³ starts to count time. If the time break is higher than “Short Time Out”, the wrench will consider as result of the test the peak reached up 75% of Target Torque. Note: *The example in the description is referred to “torque” strategy tightening, the same consideration are applicable to “angle” strategy tightening.
48 Tightening Strategies Torque + Angle Selecting this strategy in “General data” tab of “Freedom wrenches Tightening program definition”, user has to tighten the joint, reaching a specific torque “Threshold”, Freedom³ starts to count the angle, user must continue to tighten up to getting the nominal Angle value (user can understand easily when is getting the nominal value watching the display or the 2 rows of led on the long sides of the electronic/display case). The result will be considered “OK” if the angle and torque values will be in the tolerances (inside the green window). The main parameters for statistic is angle value (wrench collects all time angle and torque values). Note Torque + Angle CCW strategy is the same program but for left-handed joints. CCW-> Counter ClockWise
[email protected] 49 Torque with angle monitoring Selecting this strategy in “General data” tab of “Freedom wrenches Tightening program definition”, user has to tighten the joint, reaching a specific torque “Threshold”, Freedom³ starts to count the angle, user must continue to tighten up to getting the nominal Torque value (user can understand easily when is getting the nominal value watching the display or the 2 rows of led on the long sides of the electronic/display case). The result will be considered “OK” if the torque and angle values will be in the tolerances (inside the green window). The main parameters for statistic is torque value (wrench collects all time angle and torque values). Note “Torque with angle monitoring CCW” is the same strategy but for left-handed joints. CCW -> Counter ClockWise
50 Yield Selecting this strategy in “General data” tab of “Freedom wrenches Tightening program definition”, Freedom³ will detect automatically the yield point, advising by sound and vibration the user and showing on the display Torque and angle value at Yield point. In practice, User has to tighten the joint till the wrench will recognize the Yield point. In case the Yiled point is not recognized, Freedom³ will display an error message. The Angle value at Yield point is counted from the “Threshold” torque value. The result will be considered “OK” if the angle and torque values will be in the tolerances (inside the green window). In this tightening strategy both parameters torque and angle values will be considered for statistic charts (wrench collects all time angle and torque values). Note This tightening strategy is available only for Fredoom³ SPC mode.