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2.5 Frame

Primary structure; design focus: stability, alignment, force transmission, smooth linear bearing operation, secure peeler mounting.

How subassemblies fit together · Loads and load paths

Colour key & components

Primary structure; all subsystems mount to it. Main frame, loaded plate, transmission plate, drivetrain plate — detail pages TBD. Three plates mount from top onto frame and side rails; alignment via dowels and H7. Leveling: 6111K669 M24 100 mm Swivel Leveling Mount (McMaster) on M24 endplates at legs.

Colour(s)Component
Main frame — primary structure
Loaded mount plate — collection assembly; static side of extraction
Transmission mount plate — yoke, two 35 mm shafts, two LMK35UU bearings
Drivetrain mount plate — gears, reducer, Sumitomo
Leveling mounts — 6111K669 M24 100 mm Swivel; M24 tapped endplates on legs

Design principles

These principles guide frame design and any changes to the current configuration.

Principle Description
Stability Resist deflection under operating loads so alignment and timing are maintained. Stiffness of the welded structure and plate interfaces is critical.
Alignment The three main interfaces (drivetrain, transmission, loaded mount plates) shall be located and oriented so drive shafts, bearings, and peelers align to design intent. Dowels and H7 holes provide repeatable alignment after disassembly.
Force transmission Reaction forces from drivetrain and plunger shall be carried through the frame into the floor without local distortion. Load paths clear; joints adequate.
Repeatability Plates and brackets removable and remountable without loss of alignment. H7 holes and dowels define the datum; shims for fit-up.
Serviceability Subassemblies removable and reinstallable for maintenance. No permanent “fit once” alignment.
Manufacturability Materials, weldability, and assembly sequence achievable by the fabrication partner (e.g. Sean/YES).

CAD views. Refer to figures in the text as Figure 1, Figure 2, etc.

Isometric — main frame, three plates, leveling mounts
Top-down — three loaded interfaces on side rails
Isometric alternate view
Perspective view
Front — six legs, six leveling mounts
Right side — frame, feet, loaded and transmission plates
Side — all three plates, six feet

Figure 1. Isometric — main frame, three interface plates, leveling mounts.

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Components

Interfaces and tolerances

Known interfaces and tolerances for frame parts. Links go to related subsystems.

PartInterface / toleranceRelated
Main frame80×80×5 GB/T square tubes; #8 C-brackets; side rails with dowel holes (H7 drill/ream for repeatable alignment)
Leveling mounts6111K669 M24 100 mm (McMaster); M24 tapped endplates on six legs
Loaded mount plateMounts from top onto frame; H7 holes for dowels; shims for fit-upCollection
Transmission mount plateMounts from top onto frame; H7 holes for dowelsTransmission
Drivetrain mount plateMounts from top onto frame; H7 holes for dowelsDrivetrain

Details (from RFP draft)

Main frame: 80×80×5 GB/T square tubes as main load-bearing members; #8 C-brackets for supporting members; all fully welded. Leveling: 6111K669 M24 100 mm Swivel Leveling Mounts (McMaster) on M24 tapped endplates at bottom of frame legs (six feet). Side rails with square holes for dowels; bolts and nuts secure bodies to cross beams.

Assembly steps

  1. Adjust the frame to be flat by increasing the height of the six feet.
  2. Mount the plates to the frame and add shims where needed so plates and brackets are flush to the frame.
  3. Fasten the plate to the frame with bolts.
  4. Drill and ream H7 holes through the three plates and into the side rails for repeatable alignment.
  5. Unfasten bolts; build subassemblies; reassemble onto the frame using the drilled holes as reference.

Frame.md (source)