Version vom 23. Juni 2020, 22:18 Uhr

This page describes the assembly of the Ardumower chassis that you can purchase via the shop .

Inhaltsverzeichnis

1 Ardumower 1.0 Chassis specifications
2 Videos
3 Assembly
4 Case assembly
5 Gear motors
6 Tires
7 Mower motor
8 Mowing disc
- 8.1 Free wheel
9 Further links

Ardumower 1.0 Chassis specifications

Chassis
Chassis overview
Chassis exploded
Chassis components
Chassis side
Chassis inside
Chassis and PCB inside
PCB mount

Dimension (L/B/H): 60x36x25cm
Total weight: approx 9 kg (including all components - motors, battery, PCB etc.)
Adjustable mower motor height
Mowing motor: 24V DC, 3150 rpm, 140 mNm, 46W
Mowing disc: 190mm diameter, 3 blades
Wheels: 250mm diameter
Free wheel: 125mm diameter
Gear motors: 2 x DC 24V planetary drive, 31 rpm, 2.45 Nm, 8mm shaft, with integrated encoders
A rotation speed up to 31 rpm allows to move the robot at sufficient speed (at up to meter/sec = 31rpm/60 * PI * 0.25m = 0.4m/sec using 250mm diameter wheels)
A high torque (2.45Nm) guarantees that the robot can climb small hills as well (with 2 motors, 0.125 radius wheel, 31rpm = 0.4m/s, acceleration = 0.2 ( 1/2 of nominal speed) see calculator
Integrated encoders, so it can measure the rotation speed and the distance
Battery: Lithium-Ion 29.4V
Max. incline: approx. 30%
Material: PE-HD plates (8mm) and alumnium profiles

Videos

Assembly

Required Tools

Screw driver
Different Imbus screw driver
Different Torx screw driver

Optional Tools

Round and flat file
Electric padsaw
Drill machine with drill set (3,4,6,8,10 mm drills)

Optional Material

M4 washer and spring washer

Case assembly

This assembly instruction is work in progress!

We recommend to smooth all parts and remove all edges with a file and/or sand paper.

We start with the bottom, right and left board. You have to see you remove all the remaining plastic from the notch in the bottom board. Otherwise the side boards will not fit into it.

Then we take the bottom board and attach the first aluminium corner. It has the advantage to use the polished polished side of the bottom board downside that the grass sticks to it less well as to the matte side.

Then we put two M6 nut bolts into the corners.

In the next step, we attach the left and right side to the bottom board and fix them with the four M6 screws

Then we take the front board. If you already know that you want to use the use ultrasonic collision detection, then remove the remaining plastic from the prepared six holes. Use again four M6 screws and the corresponding nuts and attach them between the right and left side of the chassis.

In the next step we prepare the holes for the rear side. It is recommended to prepare the holes for the charging connector and the start switch.

Chassis box
Chassis box with motors
Underrun protection
Bumper
Bumper (other possible position)

Gear motors

It is recommended to use washers and spring washers to prevent that the screw become unfastened.

Assemble and tighten motors
Connect motors

Tires

It is recommended to use washers and spring washers to prevent that the screw become unfastened.

Assemble spanner
Tighten spanner
Loose spanner screws
Tighten wheel
How to loose spanner again

Mower motor

Mount mower motor fixing
Tighten mower motor at height
Connect mower mower
Assemble spanner
Tighten spanner

Mowing disc

Mount nut insert
Tighten disc
Add loctite
Tighten blades
How to loose spanner again
Disc balancing
Add blades
Blades examples

Free wheel

Free wheel bottom
Free wheel top

Further links

Detailed step-by-step instructions

CAD files

Ardumower blades etc.

@@ Zeile 90: / Zeile 90: @@
 [[File:FrontPlate.jpg]]
+In the next step we prepare the holes for the rear side. It is recommended to prepare the holes for the charging connector and the start switch.
+[[File:RearPlate.jpg]]
 <gallery>

Chassis (English): Unterschied zwischen den Versionen