Month: December 2018 (Page 1 of 2)

dc brushless motor: how to drive a small robot with PCB

dc brushless motor with PCB is a good example of soft collaboration, which makes the Hackaday community so powerful. At Hackaday, we are very grateful that the new project is based on our past featured projects. It’s great to be able to look back and see what motivates people to learn other people’s works and take them to a new level or a new path.
Bobricius said his design was inspired by the tiny PCB dc brushless motor. At present, his articles are few, but it seems that his dc brushless motor will be used to drive a small robot. Like his inspiration, the dc brushless motor has stator coils etched into the base PCB. Bobricius also abandoned the original 3D printing rotor and chose to use stacked PCB materials to make the rotor, cutting out 5mm neodymium magnet. We like to use the same material throughout the motor, which also increases the possibility of stacking the second stator on the other side of the rotor, which may be helpful in mechanical and electrical aspects. Nevertheless, the prototype still seems to retain its own style. There are also some significant improvements, such as increasing the number of stator coils from 6 to 8, and increasing the overall size of the dc brushless motor.

bldc motor: the best advanced precision motor for robotics

bldc motor design gives a new motor series, which is small enough to be suitable for limited space, strong enough to do real work, efficient enough to be used in wireless or remote applications.
High performance bldc motors can provide the output level and economy required for today’s high-demand applications. In terms of industrial systems, this means that you can install enough functionality on the arm to allow it to perform real work while operating efficiently, serving reliably, generating little waste heat or electrical noise.
When it comes to industrial applications, motors in robotic processing and assembly systems must be very reliable, cost-effective and space-efficient.
For example, the ability to incorporate the motor itself into the manipulator rather than attach it to an external point of motion means that more robots can be placed in a given space.
The design of a frameless bldc motor, also known as the rotor/stator assembly, allows the motor to be fully integrated into one assembly to produce the largest possible torque-volume ratio.
There are some useful examples of industrial roving systems at both ends of the scale, because not all roving is as big as a golf cart.For example, inspection-class ROVs for checking out remote or inaccessible areas must be small and portable so that they can be easily moved to where they are needed and deployed.
The latest generation of advanced bldc motor not only meets the requirements of ROV detection level, but also has small size, high power, high efficiency, compact design and low noise. Customizable bldc motor serves this particular market segment with packaging and frameless mechanical configuration.

stepper motor driver: how to install the stepper motor with it

stepper motor driver is a necessary for stepper motor. Since most manufacturers use standardized connectors, installing stepper motor is a fairly simple process. Just insert the stepper motor into the correct slot of the control board, and it will work normally.
However, there are still some things to be noted:
First, never install a motor (or anything else) when you open or insert a printer.This is dangerous, because if you don’t do it right, you can expose yourself to electric shocks, frying fragile parts and triggering electrical fires.So before you start working, close the printer and unplug it.
Secondly, never unplug the stepping motor that is powering. If you notice the first step, it’s not a problem, but if you don’t, you may eventually fry your stepper motor driver or your control panel.
Third, ensure that the stepper motor driver provides the correct current to the motor. This can be adjusted by the potentiometer on the drive board or, in some cases, by the software of the printer. Too little current means that the motor has no suitable torque. Too much current will cause the motor to overheat.
Finally, if you find that the motor has obvious problems after installation, please stop what you are doing and turn off the printer.
Before continuing to use the motor, please carefully check the wiring and driving circuit to ensure that there are no errors. If there are no errors, make sure that the motor, stepper motor driver and software are compatible.

nema 34 stepper motor: how to measure it accurately

nema 34 stepper motor is accurately measured. I started by accurately calculating the measurements I needed: the position of nema 34 stepper motor, the case and the nozzle. The nozzle in this position gave me a rough outline of the cold end, so it didn’t hit anything.The other features of the cold end and their location are unnecessary.
You don’t need to model the entire component — you just need to model the parts that affect the component being built. It looks like we have a nema 34 stepper motor bracket at the back.
Since all nema 34 stepper motors are built according to the standard, we can apply Rule 1 immediately. First of all, I chose the angle that was the easiest to measure.
According to Rule 1, I can assume that without rotation, the step mode and everything are completely square.Even though there are some unknown advantages of rotating stepping holes, CAD software hates this kind of thing very much.
If I find a hole offset, the rest can be determined. So I just measured the distance from the edge to the inside of the hole, and then added half the diameter of the hole. If math is difficult, I can do it with zero offset technique.
Finally, we must get the offset from nema 34 stepper motor axis to the center of the nozzle assembly, and the nozzle assembly slides into the cold end.

nema 17: how to improve sound insulation with it

nema 17 is useful for sound insulation improvement. Proxxon MF70 is a very good desktop-sized milling machine with many useful accessories available, but its 20,000-turn spindle causes considerable noise and invites red-faced neighbors.
To solve these problems, Tim Lebacq is working on the sound insulation improvement of his CNC rolling mill. In order to achieve the goal of sound insulation, he obviously had to first convert the manual MF70 to the CNC version.
This is fairly straightforward and has been done in many different ways on similar machines over the years. Tim insists on using tested controller solutions, including raspberry pie, Arduino Uno ,three nema 17 motors and nema 17 stepper drivers. These electronic devices are packed in a recycled metal box of an old power supply.
The sound-proof box is the place where he faces the unknown. The box itself is made of wood frame lined particleboard.
A pair of drawer sliders with bolted locks are used to open the front door vertically.He also added some RGB patches controlled by raspberry pie for ambient lighting and status indication. But making sound insulation materials allowed him to experiment with various materials and techniques. Finally, he chose a layer of foam lining with a layer of “bubble film”. The bumps on the surface of the bubble film seem to be effective in reducing sound, at least for his ears.
Since Proxxon MF70 has been designed to accept CNC conversion packages, it is very straightforward to install nema 17 and limit switches, making it easy for Tim to upgrade.

nema 23: how to make a Euroack sequencer with it

nema 23 is a part of Eurorack sequencer module. Eurorack has taken over the synthesizer community and hundreds of people are building their own Eurorack modules. Michael Forrest designed and built his own Eurorack sequencer module, which does not use strange things like capacitors and chips to store signals.Instead, he did it with nema 23 and some ingenious engineering.
The basic idea of Eurorack sequencers is to store a series of values in some way and play them over and over again. Connect this sequence to a clock and you can get the same sound pattern from the synthesizer. This can be achieved through a circular buffer, using a bunch of FETs and caps in the analog domain, or, in this case, sticking to a piece of paper on nema 23.
The key of this structure is the stepper motor with 96 steps per rotation. This is important because the module is controlled by clock pulses from the sequencer.
Because 96 can be divided by 8 and 16, this means that the sequencer will play in 4/4 of the time.
The built electronic device is very simple. Arduino receives clock pulses and sends step signals to H-driver. It’s very simple, very interesting, and it’s installed on a suitable eurorack-sized panel. nema 23 rotates a paper disc, which is read out by a photoresistor and an LED.

nema 23 stepper motor: improves conveyor flexibility

nema 23 stepper motor package was customized using mobile products, providing a single motion control solution for Intralox’s innovative delivery system.
The system can handle various configurations of packages. It needs an assembly of nema 23 stepper motor and actuator. It can locate the target position as fast as the analog control system updates the target position every 4 milliseconds.
In addition, stepper motors need to be flexible to meet the changing requirements of calibration, classification and selection for applications in different industries, such as food processing, beverage processing, baking and industry.
The STM/SWM integrated stepper motor package is designed by mobile, which has the efficient and flexible positioning required by the conveyor system.
STM/SWM combines nema 23 stepper motor, drive and control, integrates encoder, and has the function of automatic stall detection and prevention. The built-in encoder feeds back the actual position of nema 23 stepper motor to the integrated controller and closes the feedback loop to avoid the restrictions associated with the stepping system.
Ask the programmer Motion control software incorporates STM/SWM integrated stepper motor package to make simple configuration operations to match the needs of different conveyor applications. nema 23 stepper motor integrated with vehicular Ethernet / IP communication replace noise analog and digital signal control signal.

dc brushless motor: excellent performance with high torque

dc brushless motor is applied in several industry. In the fields of robots, artificial limbs, laboratory automation, medical device technology, pumps and aircraft cabin equipment, more and more applications require high torque in a very short time.
With the introduction of BXT series BXT dc brushless motor, Ford has put forward higher requirements in the fields of high performance, external rotor, slot drive and so on. Thanks to innovative winding technology and optimized design, the length of the dc brushless motor is only 14, 16 and 21 mm, but the torque can reach 134 mm, with diameters of 22 mm, 32 mm and 42 mm, respectively.
They are designed for a continuous output power of up to 100 w, thus greatly exceeding the benchmark of such drivers, especially in terms of the ratio of torque to length, volume and weight, which benefits valuable space applications.
As a standard, these new products are equipped with digital Hall sensors. They are designed at speeds of up to 10,000 rpm and can be used with a wide range of gear, encoder, brake and drive electronics products from the Ford Hubble product range. FAULHABER specializes in modifying the electromechanical interface of motors to provide configuration solutions for each application.
The dc brushless motor has a standard single lead, thus providing a flexible electronic interface with multiple industrial connectors.

nema 17 stepper motor: how to build a plunger-style paste extruder with it

nema 17 stepper motor can be used to build a plunger-style paste extruder for ceramic 3D printer.
01. First, remove the two m3 bolts from the straight-axis stepper motor (next to the 4-pin line) and install the 3D printed fan bracket sing 2×m3 30mm bolts.
02. Install a 40mm cooling fan with 2 x m3 10mm bolts.
This fan cools the stepper motor during the printing process.
03. Extend the 2pin wire from the fan and make it the same length as the 4pin wire from nema 17 stepper motor. Organize the wire using the cable wrap and a zip tie. You can solder wire together (recommended).
04. Prepare 3D printing piston, 60cc syringe rubber plunger, stepper motor threaded shaft.
They are assembled and placed in a nema 17 stepper motor.
05. Prepare the 3D print syringe holder and 2xm3 6mm and bolt the loaded syringe barrel.
You can use a spatula to load the clay into the syringe. I use a dollar store. If you use clay, syringes have many uses.
06. The extruder is ready. You can connect it to the printer, but you may need to design a mount for the printer. Depending on the design and size of the nozzle, you can print approximately 15-25 minutes of content. For nozzles, you can use a liquid dispensing needle.
07. To print out the right thing with an extruder, you need to experiment with your settings, such as print speed, feed rate, lead screw, layer height, and clay viscosity.
So you can try to build plunger-style paste extruder with nema 17 stepper motor as well.

stepper motor driver: improve the performance of stepper motor

stepper motor driver by Trinamic allow the stepper motor to reach 256 (8-bit) micro-steps per complete step.
Tmc5130a-TAA is a small, intelligent stepper motor driver and controller integrated circuit, including stealth chopping mode, which is the ultimate solution of this excellent analog record player. Using such a high micro-step resolution means that the motor’s rotor is now stepping at a smaller angle or distance, thereby reducing vibration and noise.
StealthChop’s technology is based on voltage circuit breakers. Trinamine improves voltage mode operation and combines it with current control.
Based on current feedback, the stepper motor driver of TMC5130A-TA chip adjusts voltage modulation to minimize current fluctuation. Therefore, the system can adjust itself according to the parameters and working voltage of the motor.
In addition to the noise generated by ball bearings, Stealth Chop provides very quiet stepper motor performance. The application of stealth chopper technology has reached a noise level of 10 decibels or even more lower than that of traditional current control.
On the electrical side, they started with TMC260-PA stepper motor drive of trinamac, using 256 microsteps and current-based chopper mode spread-frequency cycles. Then the engineers assumed that instead of using 200 full-step motors, 800 full-step motors would be enough.
However, the stepping vibration of the motor is still too strong to be heard in the audio output signal.
Finally, they use 256 microsteps and TealthChop combined with 200 full-step motors, which are implemented in the TMC5130A-TA stepper motor driver and controller.

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