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The robot arm project: light weight, portable and affordable:
Design target: to build a light weight robot arm for remote inspection and automation.
Specifications:
- total length of the arm approx. 100cm.
- able to grip and lift an object of 250grams in entire reach of the arm.
- equipped with a HD webcam at arm's length.
- portable: low weight, maximum approx 4kg.
- transportable: should fit in a normal sized suitcase for easy air travel.
- affordable: total cost of arm and controller: under € 3.000,=
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The arm is made from aluminium, with sturdy wormwheel drives. All arm joints are powered by stepper motors through timing belts for very accurate
and repeatable movements, and all joints have ball bearings. The hand is powered by 3 servo's for pan, tilt and grip. A webcam is mounted
just above the gripper, giving it a wide range of view and accurate positioning of the gripper. |
| Arm mounted on a table: picking up a full 330ml can of coke and dropping it in a box: | |
| View from the arm mounted camera while handling the can: | |
| The robot arm can be fitted in a Peli Storm case iM2700, measuring 625*500*218mm. The arm itself weighs approximately 3,5kg, the suitcase weighs 5kg. The Storm Case is watertight, very strong and has a pressure release valve. It will even float with all equipment inside! | |
| Open the netbook PC and power-up the equipment: the arm will unfold itself, ready for action. | |
| Using the arm to inspect an object: it lifts the camera about a meter higher than the table, makes a turn to look around, test its gripper and looks down and up at the inspected object. Then it returns to its suitcase. | |
| View from the arm mounted camera while inspecting..... |
Control unit:
The robot arm is controlled from a (netbook) PC through a USB port. The USB connects to an electronic control unit that was designed
specifically for the arm. It has outputs for 3 stepper motors and 4 servo motors, has inputs for end-switches, sensors and a
joystick. The control unit can be DIN rail mounted and contains a powerful ARM-7 processor running at 48MHz.
Two RS485 ports are available, supporting Modbus communication over the external port while at the same
time communicating with extension modules such as the DIN rail mounted ConSensus modules
over the internal port.
The robot arm comes with free software for Windows PC, to control each motor. Source codes for the control unit are also available free of charge for the GNU "C" compiler. A complete software package for remote control and inspection over internet is available as a cost option.
Price list:
| Part no. | Item: | price [€] excl. VAT/BTW |
| 39000 | Robot arm: rotating base, upper arm (35cm) and lower arm (45cm) | 1,475.00 |
| 39010 | HD camera with pan and tilt servos | 520.00 |
| 39020 | Gripper with servo | 425.00 |
| 39030 | Control unit for 3 steppers, 4 servos and PC software to control the arm | 375.00 |
| 39040 | Desktop 24V 5A power supply 100-240VAC | 91.85 |
| 39050 | Complete set of all of the above parts | 2,886.85 |
Options:
| Part no. | Item: | price [€] excl. VAT/BTW |
| 39060 | Din rail 24V 5A power supply 100-240VAC | 94.25 |
| 39070 | Peli Storm case with mounting frame for the arm and netbook PC (not included) | 1,250.00 |
| 39080 | Software license for remote control and inspection | 4,500.00 |
When ordering, please allow 8 to 10 weeks for delivery. Postage and packaging € 40.= per order under € 1,000.=.
More information:
The arms are made to measure. Special editions can be made on request, including anodizing in color. Substantial discounts are available for larger quantities. Please mail your inquiries to info@exatech.nl.