Drawings & Schematics

End-Effector Drawing

Mechanical Parts

Name Qty.PurposeImage
Dynamixel MX-641Torque Applying Motor for the Cutting Mechanism
Dynamixel MX-281Torque Applying Motor for the Gripping Mechanism
Dynamixel MX-64 Servo Horn Couple1Affixed to the MX-64 Servo Horn
Dynamixel MX-28 Servo Horn Couple1Affixed to the MX-28 Servo Horn
M2x6mm Set Screw12Circumference Affixing Screw for Servo Horn Couples
M3x6mm Set Screw2Affixing Screw for Servo Horn 
MX-64 Spacer Plate1Isolating Plate for the Cutting Module
MX-28 Spacer Plate1Isolating Plate for the Gripping Module
MX-64 Base Plate1Housing Unit for the Cutting Unit
MX-28 Base Plate1Housing Unit for the Gripping Unit
TPU Gripper Pads1Compliant Spacing for Gripping Links
Extreme-Traction Abrasive Antislip TapeSquare, 5-1/2″ Wide x 5-1/2″ Long1Increase frictional forces while gripping to reduce slipping
Unactuated Link4Grounded Link that Dictated Stroke and Force Transmission Along the transverse axis of the End-Effector
Cutting Link2Blade Holder and Floating Link of the 4-bar mechanism
Dewalt Bi-Metal Utility Blade2Cutting Blade for Gripping Links: Sharpened to Lower Blade Angle for Better Cutting Performance
Gripping Links2Links Used to Grasp Peduncles
Realsense D435 Mount1Static Mounting Piece to Rigidly Attach Realsense D435i to End-Effector
Spur Gear Links1 (of each)Acts as the coupler links for the 4-bar mechanism. Two separate gears are required to allow for proper alignment of teeth
M2.5 Heat Sink8Used as a nut in affixing base plates and spacer motors to the base-plate
M6x10 Heat Sink1Used as a nut in affixing base plates and spacer plates 
Brass Tubing3.5 mm OD, 0.225 mm Wall Thickness, 3 mm ID10Placed in all M3 link through holes to reduce friction with M3 Screw
316 Stainless Steel Dowel Pin 6mm Diameter, 12mm Long4Shaft Placed in the Blind Holes of the Base Plates and Spacer Plates and within the Geared Links
18-8 Stainless Steel Socket Head Screw, M2.5 x 0.45 mm Thread, 10 mm Long8Affixed Motors to Base-Plate via the M2.5 Heat Sink
Medium-Strength Steel Nylon-Insert LocknutClass 8, Zinc Plated, M3 x 0.5 mm Thread, 4 mm High12Affixes Links together and to the Base Plates
Button Head Hex Drive ScrewPassivated 18-8 Stainless Steel, M3 x 0.50 mm Thread, 14mm Long12Acts as the shaft to affix links together
General Purpose 18-8 Stainless Steel Washerfor M3 Screw Size, 3.200 mm ID, 6 mm OD6Reduce surface friction  between links and used to align links 
18-8 Stainless Steel Round Shim0.2mm Thick, 8mm ID12Reduce surface friction between base plates and geared links, as well as for alignment
316 Stainless Steel Pan Head Phillips ScrewsM6 x 1.00 mm Thread, 50mm Long1Affixes both base plates and spacer plates