Reducing cost and size of food and beverage preparation robots

1. An alimentary-product assembling and dispensing device comprising:

a plurality of alimentary-ingredient dispensers positioned to dispense respective ingredients in a plurality of different locations of a robotic work environment;

a robot configured to receive an open-top vessel from an open-top-vessel dispenser and move the open-top vessel to the different locations to receive different ingredients from the plurality of alimentary-ingredient dispensers, wherein the robot comprises four or fewer degrees of freedom; and

a vending aperture through which consumers retrieve vended alimentary products assembled by the robot from ingredients dispensed from the plurality of alimentary-ingredient dispensers.

2. The device of claim 1 , wherein:

two of the degrees of freedom are movement in a plane.

3. The device of claim 2 , wherein:

one of the degrees of freedom is rotation about an axis normal to the plane.

4. The device of claim 2 , wherein the two degrees of freedom comprise:

rotation of a first arm of the robot about a first axis;

rotation of a second arm coupled to a distal portion of the first arm about a second axis, the second axis being parallel to the first axis.

5. The device of claim 2 , wherein the two degrees of freedom comprise:

translation along a first elongated member; and

translation along a second elongated member moveably coupled to the first elongated member.

6. The device of claim 1 , wherein the robot comprises three and only three degrees of freedom.

7. The device of claim 1 , comprising:

another robot configured to receive another open-top vessel from the open-top-vessel dispenser and move the other open-top vessel to the different locations to receive different ingredients from the plurality of alimentary-ingredient dispensers, wherein:

the robot and the other robot are configured to move concurrently through areas that overlap.

8. The device of claim 7 , wherein:

the robot and the other robot each comprise a plurality of omniwheels or mecanum wheels.

9. The device of claim 1 , wherein:

the plurality of alimentary-ingredient dispensers comprise a coffee dispenser; and

the open-top vessel dispenser is configured to dispense coffee cups.

10. The device of claim 1 , wherein:

the plurality of alimentary-ingredient dispensers comprise a quinoa dispenser, a pizza ingredient dispenser, a yogurt dispenser, an ice-cream dispenser, or a lettuce dispenser; and

the open-top vessel dispenser is configured to dispense bowls.

11. The device of claim 1 , wherein the robot comprises:

a controller;

a first rail, having a first end and a second end;

a second rail, spaced from the first rail, the second rail having a first end and a second end, wherein the first rail and the second rail are parallel to one another;

a gantry, positioned perpendicular to the first and second rails, the gantry having a first end movable along the first rail and a second end movable along the second rail;

a first actuator coupled to the first rail to move the gantry along the first rail, between the first end of the first rail and the second end of the first rail, wherein the first actuator is configured to be controlled by the controller;

a carrier, coupled to the gantry, configured to receive an open-top vessel, the vessel being configured to hold a beverage;

a second actuator coupled to the gantry configured to displace the carrier along the gantry, between the first end and the second end of the gantry, wherein the second actuator is configured to be controlled by the controller;

a first position sensor, coupled to the controller, disposed to measure a position of the gantry with respect to the first rail; and

a second position sensor, coupled to the controller, disposed to measure a position of the carrier with respect to the gantry;

wherein the controller is configured to cause the first actuator and the second actuator to move the carrier and to calculate a position of the carrier based on signals from the first position sensor and the second position sensor.

12. The device of claim 11 , further comprising:

a third actuator coupled to the second rail configured to move the gantry along the second rail, between the first end and the second end of the second rail, wherein the third actuator is configured to be controlled by the controller;

a third position sensor, coupled to the controller, disposed to measure a position of the gantry with respect to the second rail; and

the controller calculates a position of the carrier based on signals from signals from the first position sensor, the second position sensor, and the third position sensor.

13. The device of claim 12 , wherein:

the controller is configured to calculate a position of the carrier as a weighted combination of signals from the first position sensor and the third position sensor.

14. The device of claim 11 , wherein

the first actuator and the second actuator are configured to move concurrently;

the first and the second position sensors are non-contact sensors; and

the first and second rails and the gantry have an H-shaped configuration.

15. The device of claim 11 , comprising:

a third actuator coupled to a plurality of end-effectors, wherein the plurality of end-effectors are configured to be engaged to move the open-top vessel; and

a member connecting the third actuator to the carrier.

16. The device of claim 15 , wherein:

the third actuator is configured to move along a z axis, wherein the z axis is perpendicular to the first rail and the second rail.

17. The device of claim 15 , wherein:

the member connecting the third actuator to the carrier is perpendicular to the first rail and the second rail.

18. The device of claim 17 , wherein:

the third actuator is configured to rotate about an axis perpendicular to the first rail and the second rail.

19. The device of claim 15 , wherein:

the plurality of end-effectors comprise three members;

the three members are separated from the third actuator by a sheet;

the three members are coupled to the third actuator via magnetic couplings; and

the sheet is mechanically static.

20. The device of claim 11 , wherein the controller is configured to compute an acceleration of the first actuator and an acceleration of the second actuator based on geometry of an open-top vessel and an amount of the beverage in the open-top vessel.

21. The device of claim 11 , wherein the first actuator and the second actuator each comprise a stepper motor.

22. The device of claim 11 , wherein the controller is configured to execute a set of instructions specifying:

a first location to receive a dispensed open-top vessel,

a plurality of secondary locations to carry the open-top vessel from the first location to each of the plurality of secondary locations in a specific order; and

a third location to deliver the open-top vessel to a consumer.

23. The device of claim 22 , wherein the set of instructions comprise a wait time at each of the plurality of secondary locations.

24. The device of claim 11 , comprising:

means for isolating robotic actuators from a food or beverage preparation volume.

25. The device of claim 11 , comprising:

means for coupling an end effector to the robot.