We will look at how a hand manipulator is made with our own hands, on industrial designs. First, general questions will be raised, then the technical characteristics of the result, details, and in the end the assembly process itself.
In general and in general
The creation of this device as a whole should not cause any difficulties. It will be necessary to carefully consider only the possibilities of
mechanical movements, which will be quite difficult to implement from a physical point of view, so that the arm-manipulator fulfills its tasks.
Result Specifications
A sample with parameters of length / height / width will be considered, respectively 228/380/160 millimeters. The weight of the arm-manipulator, made by yourself, will be about 1 kilogram. For control, a wired remote control is used. The approximate assembly time in the presence of experience is about 6-8 hours. If it is not there, then days, weeks, and with connivance, months can take so that a manipulator arm is assembled. Do it yourself and in such cases alone should be done except for your own interest. For the movement of components, collector motors are used. With enough effort, you can make a device that will rotate 360 degrees. Also, for convenience, in addition to standard tools like a soldering iron and solder, you need to stock up on:
- Extra long pliers.
- Side cutting pliers.
- Phillips screwdriver.
- 4 type D batteries
The remote control can be implemented using buttons and a microcontroller. If you want to make remote wireless control, an action control element will also be needed in the manipulator arm. As additions, only devices (capacitors, resistors, transistors) will be needed that will stabilize the circuit and transmit the current of the required magnitude through it at the right time.
Small parts
To control the number of revolutions, you can use the transition wheels. They will make the movement of the arm-manipulator smooth.
It is also necessary to ensure that the wires do not complicate its movement. It is optimal to lay them inside the structure. You can do everything from the outside, this approach will save time, but can potentially lead to difficulties in moving individual nodes or the entire device. And now: how to make a manipulator?
General assembly
Now we proceed directly to the creation of a manipulator arm. We start from the bottom. It must be possible to rotate the device in all directions. A good solution would be to place it on a disk platform, which is driven by a single motor. So that it can rotate in both directions, there are two options:
- Installation of two engines. Each of them will be responsible for turning in a specific direction. When one is working, the second is at rest.
- Installing one engine with a circuit that can make it spin in both directions.
Which of the proposed options to choose is entirely up to you. Next, the main construction is done. For comfort, two “joints” are needed. Attached to the platform should be able to tilt in different directions, which is solved with the help of engines located at its base. Another or a couple should be placed at the elbow, so that part of the grip can be moved along the horizontal and vertical lines of the coordinate system. Further, if you want to get the most out of it, you can install another engine in the wrist. Further, the most necessary, without which the manipulator arm does not seem to be. With your own hands you have to make the capture device itself. There are many options for implementation. You can give a tip on the two most popular:
- Only two fingers are used, which simultaneously compress and expand the capture object. It is the simplest implementation, which, however, usually cannot boast of a significant carrying capacity.
- A prototype of the human hand is being created. Here for all fingers one engine can be used, with the help of which bending / bending will be carried out. But you can make the design more complicated. So, it is possible to connect an engine to each finger and control them separately.
Then it remains to make a remote control, with the help of which it will affect individual engines and the pace of their work. And you can begin to experiment using a robot manipulator made with your own hands.
Possible schematic representations of the result
The do-it-yourself hand manipulator provides ample opportunities for creative inventions. Therefore, several implementations are presented for your attention, which can be taken as a basis for creating your own device of similar purpose.
Any presented manipulator circuit may be improved.
Conclusion
Important in robotics is that there is virtually no limit to functional improvement. Therefore, if you want to create a real work of art is not difficult. Speaking about the possible ways of further improvement, it should be noted crane-manipulator. It’s not difficult to make such a device with your own hands, at the same time it will allow you to accustom children to creative work, science and design. And this, in turn, can positively affect their future lives. Will it be difficult to make a crane with your own hands? This is not as problematic as it might seem at first glance. Is it worth it to take care of the presence of additional small parts like a cable and wheels on which it will spin.