シグマ電子工業 Product Lineup

This technical document introduces methods for reducing vibrations during the machining of irregularly shaped objects. It explains the issues related to machining irregularly shaped objects, the necessary preparations for field balancing, and methods for balance correction. *For more details, please refer to the PDF document or feel free to contact us.*

This technical document introduces balancing tests and balancing test machines. It explains the realities of balancing high-speed rotating bodies, the advantages and disadvantages of horizontal soft-type balancing test machines, and field balancing, all in 77 pages. 【Contents (partial)】 ■ Imbalance generates centrifugal force when rotating ■ Effects of imbalance on rotating machinery ■ Causes of imbalance ■ Workpieces undergoing balancing ■ Methods of balancing *For more details, please refer to the PDF document or feel free to contact us.

This technical document introduces a new balancing correction method for high-speed spindles. In February 2002, we successfully commercialized the "Field Balancer" incorporating the multi-speed and multi-plane method. As a result, we reduced vibrations across the entire operating range to less than one-fifth of that achieved by conventional technology, and further shortened the balancing time to less than one-eighth. Here, we will discuss the effectiveness of the multi-speed and multi-plane method and provide application examples. [Contents (partial)] ■1. Introduction ■2. Classification of Rotors ■3. In high-speed rotation, rigid rotors transform into elastic rotors ■4. Dangerous speeds of elastic rotors and their drawbacks ■5. Conventional balancing correction methods *For more details, please refer to the PDF document or feel free to contact us.

This technical document introduces the measurement and correction of imbalance in rotating bodies. It explains the causes of imbalance, the three major causes of imbalance, and the definition of balancing accuracy, using diagrams and formulas over a total of 63 pages. 【Contents (partial)】 ■1. Introduction ■2. What is imbalance? ■3. Causes of imbalance ■4. Three major causes of imbalance ・4-1 Defects in design ・4-2 Defects in materials ・4-3 Defects during manufacturing or assembly *For more details, please refer to the PDF document or feel free to contact us.

This technical document introduces preliminary knowledge about field balancing. It includes precautions for handling piezoelectric accelerometers, methods for selecting balancing techniques and correction factors, and a list of field balancers offered by our company. [Contents (partial)] ■1. Introduction 　・1-1 Preliminary knowledge of mechanical vibrations 　・1-2 Precautions for handling piezoelectric accelerometers 　・1-3 Considerations when installing rotational sensors ■2. Investigating the target machine before balance correction 　・2-1 Considerations for balancing rotating machinery with rotational irregularities 　・2-2 Analysis of unbalanced vibrations 　・2-3 Harmonic vibration analysis 　・2-4 Multi-speed analysis 　・2-5 Frequency analysis using FFT *For more details, please refer to the PDF document or feel free to contact us.

This technical document introduces vibration meters. It covers topics such as the "resonance phenomenon," which is a type of vibration trouble, as well as the basic knowledge necessary for vibration measurement and the essential specifications required for vibration meters used in machine vibration evaluation, all presented in 33 pages. It serves as a useful guide for effectively utilizing vibration meters. [Contents] ■ Why measure vibration? ■ Vibration troubles: "Resonance phenomenon" ■ "Forced vibration" and "Self-excited vibration" ■ From "vibration measurement" to "vibration countermeasures" ■ Basic knowledge necessary for vibration measurement ■ Let's find the optimal vibration meter ■ What constitutes a desirable vibration meter ■ Desirable vibration meters *For more details, please refer to the PDF document or feel free to contact us.

This technical document introduces a new balance correction method for high-speed spindles (multi-speed, multi-surface method). It discusses the effectiveness and impact of the multi-speed, multi-surface method based on case studies, as well as explaining the classification of rotors, which is a crucial point for balancing rotating bodies (rotors), and the concept of critical speed. 【Contents】 ■1. Introduction ■2. Rotors and Critical Speed ■3. Conventional Balance Correction Methods ■4. Development of the Multi-Speed, Multi-Surface Method ■5. Field Balancer for Elastic Rotors ■6. Conclusion ■7. References *For more details, please refer to the PDF document or feel free to contact us.