Today, we are going to discuss the "Development work and production engineering for electromagnetic brakesThis is a note about "The first time I was involved in the development and production engineering work of an electromagnetic brake manufacturer. I used to be involved in development and production engineering work for an electromagnetic brake manufacturer, so today I would like to write an article about electromagnetic brake development and production engineering.
electromagnetic brake
Development work for electromagnetic brakes
The electromagnetic brake development I was involved in was mainly for motors. Basically, electromagnetic brakes for motors are called "de-energized actuated electromagnetic brakes," which are excited and released when the motor is moving and de-energized when it stops. Although this is a very simple structure, special arrangements may be necessary depending on the type of motor and the environment in which the motor is used.
The difficult part of electromagnetic brake development is how to meet the customer's desired specifications within the given space. Just as there are many motor manufacturers, there are many different requirements for brakes. On the other hand, for customers who are new to electromagnetic brakes, we develop them after taking a questionnaire on a number of items such as holding torque, operating voltage, and operating environment temperature, so that we can understand the necessary specifications.
We do not make much use of analysis software.
Electromagnetic brakes serve to lock the motor shaft when the motor stops. Today, the demand for motors for robotic applications requires a braking brake, but if a conventional holding brake is used for braking, the friction material wears out too much, resulting in poor operation.Therefore, the new electromagnetic brake I was involved in developing was an electromagnetic brake that could also be used for braking.
Now that electromagnetic brakes have been developed that are capable of tens of thousands of braking cycles in certain brakes, robots employing such brakes will have an increasingly long service life.Recently, electromagnetic brakes that can be monitored for their service life have been introduced, so the development of electromagnetic brakes has broken decades of silence and is moving into its next phase, and I look forward to seeing what kind of products will be developed.
Production engineering work for electromagnetic brakes
The production engineering of electromagnetic brakes is basically the most important part of how to stably produce the electromagnetic brakes that are developed. The main tasks are to build the production line and to deal with defects on the line.
The structure of an electromagnetic brake is very simple and has a small number of component parts. For this reason, the performance of electromagnetic brake units, which are just barely included in the specifications, is affected by variations in the precision and quality of the component parts.
One of the parts of an electromagnetic brake that requires accuracy is the "gap" that is created when the brake is assembled. The gap depends on the size of the brake, but is designed to be around 0.07 to 0.1 as a result of the accumulation of each component. Therefore, the important control items in the production of electromagnetic brakes are torque and gap.
Prototypes of electromagnetic brakes are made on the production line to ascertain productivity, which is then fed back to development. At this time, we also design the jigs necessary for production and evaluate them at the same time. Recently, we also use a 3D printer to study its shape ahead of time.This applies to everything that is produced, not just electromagnetic brakes, but how this feedback is routed, how the feedback is captured from the production side, and how it is communicated. It is very important.
The production facilities for electromagnetic brakes vary from manufacturer to manufacturer. As mentioned earlier, although the components are simple, they are often hand-assembled by all manufacturers due to differences in control items, subtle dimensional differences, and the need to rely on "kan-katsu" for assembly in many cases.
That's it.
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