Pick and place frame machined brackets
STATUS 2019-04-27: NOT IN STOCK AS I NEED TO DESIGN A NEW FIXTURE. Stay tuned as material is arriving next week.
Machined from 1/4"6061 T6 aluminium.
These are the plates you would need to build an Anthony Webb type pick and place frame. Completely compatible with our pick and place head!
- The picture for the kit with the driven passive rail only shows 2 tensioner brackets but 4 are supplied.
A full set includes two Y axis to X axis adapter plates to mount your gantry, 2 idler end plates (one for X and one for Y), 2 motor mount plates (one for X and one for Y, for NEMA 17 frame size) and 2 belt trap tensioner brackets (for the Y axis sled).
An extra idler plate, passive plate and 2 additional belt traps is supplied if you pick the driven passive rail option. The passive plate has a bearing pocket for a 22mm (diameter) x 8mm (bore) x XX (height) flanged bearing to allow a 8mm smooth rod to link to the opposite Y drive system. NOTE: You will need a 5mmx8mm shaft coupling to adapt the 5mm stepper shaft to the 8mm smooth rod driveshaft. Bearing example/ coupling example. The fit is "loose" (but no radial play) so you should plan on either installing the bearing with loctite or using 8mm washers between the bearing and pulley to keep it in place.
The design has tapped M5 mounting holes for the idler pulleys (Not included: 6 for passive, 9 for driven). Use a pulley like this one from Robotdigg. A bearing will also be required for the passive plate if you pick an option with a pulley kit. You will want to plan on spacing the idler pulleys referenced above about 6mm with M5 washers (1mm thick each) or a 6mm spacer.
I have put together a reference assembly in fusion 360 so you can see how the plates and head mount together: http://a360.co/1UJXUzY
Here are some drawings with dimensions (you do not need any CAD software to view them):
NEMA17 motor plate:
"sled" bracket (links the X rail to the Y rails):
Belt trap/ tensioner:
Passive rail plate (optional):
See Anthony Webb's design reference here: https://hackaday.io/project/9319-diy-pick-and-place
HARDWARE (not supplied):
- M3x6 (qty 8) for mounting the sled brackets to the Y rail bearing blocksM5x10 (qty 24, or 32 if driven passive rail) for mounting the plates to the extrusion (including the sled brackets)
- M3x14 (qty 4, or 8 for driven passive rail) for mounting the belt tensioner brackets to the sled brackets. Lengths of 12mm+ should be fine to allow for room to tension the belt
- M3x10 (qty 2, or 4 if driven passive rail) you can use anything similar to this as a pin for the belt to wrap around before going back out the tensioner bracket. See the pictures to make this more clear. In the pictures you can see one using an M3 screw and the other using a 1/8 steel pin.