Category: nema 23

nema 23: applied in space flight

nema 23 can work in harsh environments and inherent problems in outer space motion control. The stepper motor is assembled according to AS9100 standard, tracing the origin of each component, and strictly controlling the manufacture to the final product.
Most of the components on nema 23 are metal alloys, which are not painted and can be used in vacuum. Plastic materials should be non exhaust polyamide or nylon. Sealed bearings filled with low exhaust lubricants are also acceptable. The stepper motor winding is optimized to minimize the resonant frequency at a specific operating speed. The use of components with high concentricity and dimensional accuracy helps to ensure that the rotor or shaft does not bring unnecessary vibration to the system. In space, vibration must be avoided because they affect sensors and instruments on board ships; low-level oscillations affect the quality of measurement sensors and imaging equipment. Because spacecraft or satellites have no energy to transfer in space, restraining vibration is a challenge. Each nema 23 designed for space requires the integrity of the material structure to deal with the expected forces without changing dimensional accuracy or mechanical integrity. Launching spacecraft into orbit is very violent, because the components are exposed to high amplitude vibration, low amplitude vibration and multi-direction impact. In addition, nema 23 vibrates during normal operation.

nema 23: what is the technical explanation of it

Nema 23 is a DC motor that rotates discontinuously. Instead, a complete rotation is divided into several equal steps. Nema 23 consists of multiple stages, which are composed of multiple coils. Nema 23 rotates one step at a time by applying the energy of the input voltage to each phase in a sequence. Therefore, nema 23 converts electrical energy or input digital pulses into mechanical shaft rotation.
Nema 23 work on the principle of electromagnetism. The rotor uses permanent magnets or soft iron as the rotor, and the rotor is surrounded by an electromagnetic stator. The poles of the rotor and stator can be fixed with sharp teeth. When a voltage is applied across the terminals, the rotor is aligned or moved to the stator with minimal clearance due to magnetic effects.
The stator is energized in a certain sequence, and the rotor is also rotated to fully rotate it, and is divided into discrete steps at a specific step angle.
Nema 23 are used in equipment that requires precise positioning and speed control. Because nema 23 can accurately repeat the movement, it is used in 3D printers, camera platforms, plotters, scanners and other equipment. Due to its maximum torque at low speeds, nema 23 is also used in equipment that requires low speeds.

nema 23: what’s the advantage of it

Nema 23 consists of a rotor with permanent magnets and a fixed stator with a winding. When the current flows through the stator winding, it generates a flux distribution that interacts with the rotor’s magnetic field distribution to exert a steering force.
Nema 23 has high magnetic pole counts, usually 50 or more. The stepper motor driver charges each pole in order, so that the rotor rotates in a series of increments or steps. Because the poles are very high, the motion seems to be continuous.
Nema 23 has many advantages. Because they generate incremental motion, they usually run open-loop, eliminating the cost and complexity of encoders or parsers. The high pole count allows them to produce very high torque at zero speed. They are compact and economical.
In adverse aspects, nema 23 has speed limits. They usually run best at 1200 rpm or below. Although they produce high torque at zero speed, the torque decreases with the increase of speed. For example, a motor that produces 100 ounces of inches at zero speed may produce only 50 ounces of inches at 500 rpm and only 10 ounces at 1000 rpm. If nema 23 is used to drive ball screw actuators or similar, it may not provide enough speed to meet the needs of the application.

nema 23: operates fine in a new linear robot

nema 23 is used broadly in robotics. Easily and accurately move in the smallest space. These are the requirements of linear robots, such as automated tasks used in processing areas and test automation.
In order to produce products at a lower cost in the shortest time, the automation of the production process is increasingly important for mechanical engineering. For this reason, igus said they have developed a new compact linear robot with nema 23.
Alexander Muhlens, director of drilin transmission technology planning at igus, explained: “Two drilin ZLW belt shafts and one drilin GRW rack shaft ensure precise guidance and lubrication through sliding elements made of high performance plastics.” The system configuration file for mounting bracket can also be used as an option. The linear robot is delivered within 24 hours, ready to connect nema 23 and encoder. Therefore, customers can install products on the machine the next day.
Drylin linear robot for instant use
In addition to the new DryLin E-line robots used in a small work envelope, igus also provides line and plane-line robots directly from inventory. All linear robots include pre-configured DryLin linear modules, all the components and linear shafts with nema 23 required for self-assembly.

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