STEPPER MOTOR TALK

Use noise optimized gear geometry to minimize the impact of individual gear engagement impulses.

Designing and analyzing gears as a system lets engineers improve and optimize microgeometry for the reduction of gear noise.

Pitch: A gear system with normal pitch of the driving gear a very small amount larger than the normal pitch of the driven gear delivers more silent transmission. Minimum noise requires a contact ratio smaller than 2 or 1. Even under a slight load, the influence of torsional stiffness is important.

Contact ratio: The gear contact ratio is the average number of teeth in contact. It usually varies between 1.2 on the low end to 1.8. Spur and straight bevel gears with operating contact ratios under 2.0 create more noise than gears with larger contact ratios. Helical and spiral bevel gears have total contact ratios well above 2.0 and produce less noise.(Click here to buy nema 23 stepper motor online)

Also keep in mind that it’s impossible to eliminate all gear noise, because it’s impossible to cut perfect gears. Even if one could, it’s impossible to limit the effect of system dynamics. One can only minimize and control gear noise to the extent that it won’t be considered problematic or audible.

Minimize gear noise in high-speed stages by fine machining and grinding. Gear stepper motor rotation speed plays a significant role in noise generation. During gear manufacturing, hobbing is a roughing operation that produces smooth and accurate gear teeth. Shaving and hardening are finishing operations improving dimensional accuracy, surface finish, and hardness. Shaving removes small amounts of material to correct profile errors. Final grinding operations produce a high surface finish, correcting any distortion following heat treatment.

Quiet operation requires minimal gear backlash. Backlash is clearance between mating gear teeth and should be enough to allow lubrication film between the teeth. The easiest way to reduce backlash is to shorten the distance between gear centers with low or even zero clearance. Such an approach lessens variations in center distance, tooth dimensions, and bearing eccentricities.

A stepper motor uses electromagnetism to create motion, converting electrical energy into mechanical energy.

Magnetic fields produce physical force that can move things. Every magnet has a magnetic field with a north pole and a south pole. If you try to push the north poles of two magnets together, they will repel each other. The same thing happens if you try to push two south poles together. If two poles are the same, they will repel each other. If, however, you play with two magnets and bring the north pole of one close to the south pole of another, they will attract each other and stick strongly together, opposite magnetic poles attract each-other.

An hybrid stepper motor uses the attraction and repelling properties of magnets to create motion. There are two magnets in a standard electric motor: a permanent magnet, and a temporary magnet. The temporary magnet is a special kind of magnet, called an electromagnet. An electromagnet is created by passing an electric current through a wire. The permanent magnet has a magnetic field (a north pole and a south pole) all the time, but the electromagnet only has a magnetic field when there is a current flowing through the wire. The strength of the wire's electromagnetic magnetic field can be intensified by increasing the current through the wire, or by forming the wire into multiple loops.

In an electric motor, the electromagnet is placed on an axle so it can spin freely inside the magnetic field of a permanent magnet. When an electric current is passed through the wire, the resulting temporary electromagnetic field interacts with the static permanent magnet, and attractive and repelling forces are created. This excitation of the wire, or electromagnet, propel it to spin on its axle, and an electric motor is born.

Check here more “stepper motor wholesale”.

The Powerful Ability of Highly Reliable Stepper Motors

Stepper motors are often misconceived as the lesser of servo motors, but as a matter of fact, they are highly reliable just like servo motors. The motor operates by accurately synchronizing with the pulse signal output from the controller to the driver, achieving highly accurate positioning and speed control. Stepper motors feature high torque and low vibration at low-speeds, ideal for applications requiring quick positioning in short distance.

Everything You Need to Know About Stepper Motors

"Stepper motors? Servo motors must have better performance." This is a typical response when asked about stepper motors. Obviously there is a major misconception about stepper motors. In fact, nema 8 stepper motors have been used in various types of applications such as advanced equipment and accessible automated instruments. The reasons why stepper motors have been continuously chosen are explained in this article. Some readers may say that they have never seen a stepper motor before. Stepper motors have been used in many applications and industries as the motor solution for drive systems requiring high accuracy control, such as factory automation (FA), manufacturing equipment for semiconductor, FPD and solar panel, medical devices, analytical instruments, precision stage, financial systems, food packaging machines, and aperture diaphragm adjustments for cameras.

Easy to use: 34%

Inexpensive: 17%

Simple operations:16%

No need for tuning: 12%

Other: 21%

*# of questionees: 258 (multiple answers allowed)/ researched by Oriental Motor

Key Points: Ease-of-Use, Simple Operations and Low Cost

According to the survey of stepper motors users, many favor stepper motors for their "ease-of-use," "simple operations", and "low cost" derived from the structure and system configuration. It makes sense that many users find such positive aspects in stepper motors, thanks to the simple structure and system configuration. However, some readers may be skeptical about the actual performance of the motor in terms of its accuracy and torque. It is not easy to fully grasp the whole idea unless there are comparison examples against other control motors such as servo motors. By knowing the characteristics and taking on different approaches based on required operations, stepper motors certainly can reduce the cost of the equipment.