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This section provides an overview for servo units as well as their applications and principles. Also, please take a look at the list of 6 servo unit manufacturers and their company rankings.
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A servo unit is a single unit that combines the mechanical elements required to run the servo motor.
Specifically, two elements are added in addition to the servomotor. These are a programmable controller (PLC) that commands the servomotor to achieve the desired motion and a servo amplifier that supplies the AC current necessary to move the servomotor as commanded by the PLC.
The "servo" in servo unit is said to be derived from the word "servant." In other words, servo unit means a unit that moves as commanded.
Servo units are used in a wide variety of industrial robots and industrial production machinery. In industrial robots, servo units are used in automobile plants to perform movements such as welding and painting car bodies and picking parts.
In other industrial machinery, servo units are incorporated to move and control machines in motion, such as injection molding machines, press machines, and label packaging machines. Servo units are often used for reciprocating motion as well as rotary motion.
A typical servo unit for reciprocating motion includes a unit in which the servomotor is connected to a ball screw, and a table connected to the nut section of the ball screw on a slide regulated by a linear guide is used as an optional positioning table.
Such a system is designed and manufactured as a one-of-a-kind product, but depending on the slide length and its thrust, a lineup may be created and used universally. A system that can be programmed to move back and forth, left and right, like the table surface of a machining sensor, is a similar system used.
Most servomotors today are AC servomotors, which run on AC current. AC servomotors consist of a rotor made of permanent magnets and a stator made of multiple electromagnets arranged to surround the rotor. An alternating current is applied to the stator, which sequentially switches the N and S poles of the electromagnets to produce the rotational motion of the rotor.
The servo amplifier sends this alternating current to the servomotor, and the servo controller commands the servo amplifier what motion to make. The movement of the servomotor is detected by an encoder attached to the rotor of the servomotor, which sends a feedback signal to the servo amplifier.
There are three ways to control servomotor motion: position control, speed control, and torque control.
1. Position Control
Position control moves and stops servomotors with high precision in relation to a commanded position. It is used in positioning systems for numerically controlled lathes and machining center tables.
2. Speed Control
Speed control moves the servomotor to achieve a target speed. Speed control responds quickly to changes in rotational speed caused by external influences and corrects the command.
3. Torque Control
Torque control controls the magnitude of torque output by a servomotor. Torque control ensures accurate operation at the commanded torque even when the load varies. This control method is used in screw tightening machines that tighten screws at a constant torque and in press machines that convert the rotational torque of the servomotor into propulsive force via a ball screw.
Servo units are classified as a closed-loop control system. Closed-loop control is characterized by the addition of feedback commands, making it less susceptible to external disturbances. In other words, servo units are capable of high-precision positioning.
*Including some distributors, etc.
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Artisan Technology Group is a supplier of Measuring & Test Equipment based in Illinois. The company provides parts and components for various businesses such as semiconductors for manufacturing sectors, instruments, incubators, microscopes, and more for Lab and Analytic departments, there are also communication products and electrical testers, analyzers, and furthermore there are drives, control systems for PLC and Motors with other products related to ARINC, VME, and VXI. Overall there is a vast inventory of equipment that serves the industrial, commercial, and military systems.
Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
3 | 60.0% |
Japan
|
1 | 20.0% |
China
|
1 | 20.0% |
35 products found
35 products
Janome
1350+ people viewing
Last viewed: 7 hours ago
Standard Response
The servo press has a built -in AC servo motor and road cells, which allows control of the position specification, loading, and changes in pressure...
11 models listed
Muscle Co., Ltd.
40+ people viewing
Last viewed: 10 minutes ago
Very Fast Response
■What is Cool Muscle 2? Cool Muscle 2 is an integrated AC servo system that has a built-in driver, controller, encoder, power supply, and PLC funct...
CKD Nisshin Electrical Corporation Co., Ltd.
420+ people viewing
Last viewed: 15 hours ago
Very Fast Response
Auxiliary brake unit device as an auxiliary braking unit. Prevents the connected motor from becoming freelancers in the event of an error in the VP...
6 models listed
Wittenstein Turnery Co., Ltd.
30+ people viewing
Last viewed: 41 minutes ago
A model that incorporates a planetary gear. You can choose from a wide variety of reduction ratios. Maximum output torque: 0.33Nm ~ 70Nm
ESTIC CORPORATION
380+ people viewing
Last viewed: 1 day ago
Standard Response
Estic's servo press was developed using the control technology of the servo motor cultivated in the development of electric nutranna. Traceability ...
16 models listed
CKD Nisshin Electrical Corporation Co., Ltd.
530+ people viewing
Last viewed: 2 hours ago
Very Fast Response
Newly imagined arc -type linear servo unit ■ Ideal for microscopic alignment operation Installing the magnet base in the minimum quantity accordin...
5 models listed
![[Reducer] DESCH High precision large reducer Servo press drive unit Servox SP-Nidek Drive Technology Co., Ltd.](https://metoree.s3.ap-northeast-1.amazonaws.com/img/products-new/30042072024073135.png)
Nidek Drive Technology Co., Ltd.
60+ people viewing
Last viewed: 7 hours ago
Fast Response
■ Drive unit of reducer for servo press [Manufactured by German company DESCH] Application Servo Press ■Features Single stage planetary mechanism,...
Global Parts Co., Ltd.
130+ people viewing
Last viewed: 1 day ago
Detailed explanation ■Original sensing component SJ-MAS ・Waterproof and dustproof standard IP67 ・High EMS (electromagnetic susceptibility) and st...
3 models listed
Wittenstein Turnery Co., Ltd.
30+ people viewing
Last viewed: 14 hours ago
■Product description ・The basic unit of SFU, which has an integrated structure of motor, encoder, and driver, and features wiring-saving, space-sa...
Wittenstein Turnery Co., Ltd.
30+ people viewing
Last viewed: 10 hours ago
■Product description ・A model that incorporates a planetary gear. - Can be selected from a wide variety of reduction ratio variations. ・Maximum o...
Wittenstein Turnery Co., Ltd.
20+ people viewing
Last viewed: 22 minutes ago
■Packaged motor drive system ideal for AGV/AMR with transport weight of 1t to 3t ・iTAS System2 is a geared servo motor + DC power input drive pack...
