Activating Spot Prep Optimisation to Improve Cycle Time

How to activate the inbuilt algorithms in winMulti to optimise the spindle switching off and on when doing spot preps

spot prep, group, preemptive, pre-emptive

Problem

Problem initially highlighted at Roseview windows

• 100% VS slider sashes and cills.
• Very small selection of operations
• Parts are consistently the same
• Large quantity of 3mm spots
• Mechanically jointed sash can have up to 12 individual holes on one piece and over 5000 individual spots per day

P,10430,ss,01,18,jn51839/017 
O,00325,VSLATCHH,0000,0000,0000 
O,01095,VSLATCHH,0000,0000,0000 
O,01305,VSRP,0000,0000,0000 
O,01330,VSLATCHH,0000,0000,0000 
O,01580,VSLATCHH,0000,0000,0000 
O,01605,VSRP,0000,0000,0000 
O,08825,VSRP,0000,0000,0000 
O,08850,VSLATCHH,0000,0000,0000 
O,09100,VSLATCHH,0000,0000,0000 
O,09125,VSRP,0000,0000,0000 
O,09335,VSLATCHH,0000,0000,0000 
O,10105,VSLATCHH,0000,0000,0000

This is a sample 449 code for a single piece. Each operation is a simple spot prep

• Spot prep spindle is regularly cycling on / off as quickly as possible.
• Overall cycle time very dependent on the cycle time of the 3mm spot prep
• Spot prep cycle determined by how fast the inverter can acc / dec
• Inverter Limits pushed
• Inverter faults, which slows the machine down

Here is a video of a spot prep before optimisation. Notice the spindle has to switch on, accelerate, plunge, reverse then switch off and decelerate

<iframe src="https://player.vimeo.com/video/393978168" width="640" height="564" frameborder="0" allow="autoplay; fullscreen" allowfullscreen></iframe>
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Draft