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| | |Description=<translate>Mechanical issues that can affect accuracy on Stuga machines</translate> | | |Description=<translate>Mechanical issues that can affect accuracy on Stuga machines</translate> |
| | |Categories=Administration | | |Categories=Administration |
| − | |Tags=Accuracy | + | |Tags=Confluence |
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| − | <translate>[https://stuga.dokit.app/wiki/General_Accuracy_Guidelines_-_Start_Here Back To General Accuracy Guidelines] | + | <translate>Moved to Confluence 11/12/2025 |
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| − | The Mechanical systems on a machine are all prone to wear and tear, maladjustment, alignment, swarf ingress, lack of lubrication and collisions.
| + | [https://stuga-ltd.atlassian.net/wiki/spaces/~5570585b7bb5d1bc31430e886883cbc774c182/pages/84213767/TS009+-+Accuracy+Diagnosis+-+Mechanical+Factors Accuracy Diagnosis]</translate> |
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| − | It is vital that all mechanics of the system are fully checked out and set and working correctly before any software adjustments are carried out
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| − | {| class="wikitable"
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| − | |+
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| − | !Mechanical Issue
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| − | !Description
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| − | !Link to Page
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| − | !Common Symptoms
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| − | !Affected Machines
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| − | |-
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| − | |Recent gripper crash - alignment
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| − | |Following a gripper crash with profile, gripper position is out / does not grip properly
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| − | |Gripper does not pick up profile correctly
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| − | Gripper assembly is loose
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| − | |All
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| − | Particulalrly Autoflow
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| − | |-
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| − | |Backlash in Ring
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| − | |Ring gearing is worn and has developed backlash
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| − | |Operation position in Y and Z varying randomly
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| − | |All Except Autoflow.
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| − | |-
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| − | |Clamp Pressures - MH and Saw
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| − | |Clamp pressures have been incorrectly adjusted and profile is not clamping correctly - ie not pushed to backfence /
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| − | |Grip slip , X axis stalling or followling error,Operational position in X,Y and Z vary.<br />
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| − | |All
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| − | |-
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| − | |Backlash Racks
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| − | |The X axis Gripper or/And Saw pusher can be moved Back and forth when the drive is enabled.
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| − | |
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| − | |Operational position in X axis will Vary, Slots may not be Very Square or Round.
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| − | Also Saw backtoback Varying.
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| − | |All
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| − | |-
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| − | |Pinion gear wear
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| − | |Backlash cannot be eliminated from the rack and May effect the Main Scaling of the Rack
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| − | |Operational Position in X axis will Vary along with Saw Backtoback Varying.
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| − | |All
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| − | |-
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| − | |Gripper nose / gap
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| − | |The Gap to Switch coming off is important for the amount of Grip Slip Allowed, 1mm is the normal amount allowed.
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| − | Grip Nose should always be in front of Step on Gripper Jaw when bottomed out
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| − | |Doesn't get onto grip switch correctly after a Trim Start.
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| − | Large grip Gap will not help solving Backtoback accuracy issues.
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| − | <br />
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| − | |All
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| − | |-
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| − | |Clamp / Rollers alignment
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| − | |Rollers Seized up. Out of Alignment .
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| − | |Lots of Grip Slip Alarms.
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| − | Operations at Beginning or End of Bar differ from Middle of bar ,
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| − | |All
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| − | |-
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| − | |Saw Clamp parallelism
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| − | |Following a Profile Clash or Jamb the Front Rollers known as Saw Side/Centraliser Clamp is not Parallel to the Rear rollers
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| − | |
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| − | |Known to Affect the 1st or Last Arrowhead on a Bar length and Cause inconsistent saw Sizes due to the change in friction.
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| − | |All
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| − | |-
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| − | |Saw kerf
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| − | |The Amount of waste Cut at 90 degrees, Basically the Saw Blade Thickness
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| − | |
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| − | |Will Have a major affect on all Sizes and Accuracy setup if not entered correctly. Care must be taken on Older setups where it is a Shared Component.
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| − | |All
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| − | |-
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| − | |Saw angles
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| − | |Any error in the saw angles will cause a bad setup of machine.
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| − | |
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| − | |Sizes are incorrect, Pieces do not weld up correctly.
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| − | |All
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| − | |-
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| − | |Rear Rollers -Parallel to G axis - ZX4
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| − | |G axis not Parallel to Rear Roller fences on Zx4 used for the V notch setup
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| − | |
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| − | |V and Y Notches at Beginning of Bar or V and Y notches at the End of Bar will differ from those in middle of Bar.
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| − | |ZX4
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| − | |-
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| − | |G axis parallel
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| − | |Gripper axis must be Parallel to all rear roller/fence alignments within machining/cutting area's.
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| − | |
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| − | |Operations at End/Beginning of Bar are not the same as Middle of Bar. Gripper knocks profile when unclamping and re gripping on Microline saw.
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| − | |All
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| − | |-
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| − | |G axis datum
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| − | |Position of Centre of Gripper jaw from Rear Fences
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| − | |
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| − | |Profiles will Slip or not get gripped correctly, will cause Laser Measure Accuracy issues.
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| − | |All
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| − | |-
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| − | |Laser alignment
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| − | |Used where Machine cannot do a Trim Start and is the Datum point End of Bar
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| − | |[[Laser Setup on Flowline/ZX3 for Laser Holes]]
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| − | |Laser Hole Errors, Operational position in X axis varying randomly
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| − | <br />
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| − | |ZX3 and ZX4 Non All in One Versions<br />
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| − | |-
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| − | |Rack alignment / height
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| − | |-
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| − | |V Notch bed height alignment (ZX4)
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| − | |Small Platform on the Newer Machines with 200mm blades where a Bottom Bed is moved into position with the V or W axis. Must NOT be higher than Under rollers.
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| − | | |
| − | Normally 0.2mm to 0.5mm lower than straight edge placed accross Under rollers,
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| − | |
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| − | |V notch Depths will be wrong, And possible V and W axis errors.
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| − | |-
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| − | |V notch blade setup
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| − | |-
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| − | |Seized rollers
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| − | |-
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| − | |Saw bed alignment
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| − | |-
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| − | |Zip gate to grip height
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| − | |-
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| − | |gripper slip
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| − | |-
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| − | |grip height to underrollers
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| − | |-
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| − | |zip gate opener fitted wrong way
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| − | |-
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| − | |Journals
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| − | |-
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| − | |Infeed grip / pull pads
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| − | |-
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| − | |Saw infeed lift / load alignment
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| − | |-
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| − | |Z blocks sticking out / badly adjusted
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| − | |-
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| − | |Datum sensors
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| − | |-
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| − | |Zero pulse on motor working
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| − | |-
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| − | |Keyways
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| − | |-
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| − | |Grubscrews loose
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| − | |-
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| − | |Sync pulse on Beckhoff systems
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| − | |-
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| − | |Centraliser not getting to position
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| − | |-
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| − | |Saw damper
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| − | |-
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| − | |Grip finger angle
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| − | |
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| − | |-
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| − | |Grip push too far
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| − | |-
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| − | |Saw top clamp pressure - Hi / Low
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| − | |Used on Low pressure to guide the Bar, Goes to high Pressure when X axis is in Position and Saw is going to cut.
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| − | | |
| − | Low Pressure Normally set 1 -1.5 bars
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| − | <br />
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| − | |
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| − | |If too high it will mark foiled profiles, twist End waste bits at end of bar, Causes overshoot on Servo drive as Load is large with more pressure on.
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| − | |
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| − | |}</translate>
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