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- Cleanroom compatible
- Load: operator handling loads
- weight of loaded Ring and HF (~1kg, not in SE)
- operator load - handling/sliding linear rail
- installing HF onto rail fixture while extended - robust to operator error
- Range: ~0.4m (retracted) to ~0.9m (extended)
- extend by at least 0.5m (to make ring engage far side 1/4-shell)
- retracted length ~0.4m (to not overhang edge of table)
- Precision:
- Line up threaded holes in Ring with thru holes in 1/4-shell
- 2mm pins, 2.4mm clearance holes → ~0.4mm dia. clearance shared between assembly and manufacturing tolerances
- 19-0/1 prototype: linear rail, HF bolted on. no other adjustment. unbolt/rebolt to make small adjustments via oversized holes
- Bolt together, slide in rail, check misalignment, slide out rail, adjust if required
- Bolt together, install taper pins, slide in rail, install fasteners
- Line up threaded holes in Ring with thru holes in 1/4-shell
- Usability:
- include handle
- include lock in "extended" position
- keep clear of fragile parts - work with covers etc.
- Travel needed:
- ~500mm to bring one side into contact with other side
- preserving space on table for welding/covers/etc on both sides of HF
- ~160mm to move one HF beyond edge of 1/4-shell
- ~500mm to bring one side into contact with other side
- Prototype 19-0/1 concept (following what was shown previously): ~500mm travel, ~400mm length
- 2x McMaster # 8379K6 , stacked
- Prototype 19-0/1 concept (following what was shown previously): ~500mm travel, ~400mm length
- Alternative: 1x ~250mm travel, ~400mm length rail per ring, to move both 1/4-shells and meet in the middle
- not preferred: less assembly flexibility, less clearance when connecting handling frame due to less travel
- Alternative: 1x ~450mm travel, move rails to edge of table so single rail can reach far side 1/4-shell
- not sure about rigidity cantilevered from bearing at one end, or about table space to enclose.
- Alternative: 1x ~250mm travel, ~400mm length rail per ring, to move both 1/4-shells and meet in the middle
Candidate vendor parts:
- 8020 Inc. # 6516
- slide on 1.5" t-slot rail. add #6800 locking handle. prototype onlynot preferred due to sliding friction and height.
- Misumi # SAR 340 (customize length)SSE2BWLZ14G-400
- linear slide rail w/ bearings. configurable
...
- , stainless steel, cleanroom grease.
- locking mechanism?
- Misumi SECWK14 compatible with above, but not stainless
- locking mechanism?
- also end stop bolts
- Grease not preferred (cleanliness / accidental spread)
- Igus Drylin NT
- plastic slides
- Sent request to Igus contact
Looking for:
- ~500mm linear motion
- ~400mm collapsed length
- ~10lb load capacity
- Low duty cycle (moved occasionally)
- End stops at both ends of travel
- For clean assembly room (ISO7) use
- Qty ~12 of these slides