There are two ways to measure the vibration of the gear unit, one is to measure the vibration of the box and the other is to measure the vibration of the shaft.Combining these two measurement methods to obtain the absolute movement of the shaft in the gear unit is also a more effective method.
For gear units supported by rolling bearings, the bearing radial clearance is small, and the relative movement between the bearing and the box is also small, so the box vibration measurement should be used.For gear units supported by ordinary sliding bearings, shaft vibration measurement or box vibration measurement can be used.However, when the frequency is in the range of 0-500Hz, the vibration measurement of the box is insensitive and difficult to measure the tiny vibration, so the shaft vibration measurement should be used.The vibration measurement of the box can obtain a wide frequency range and dynamic characteristics, which can provide the necessary basis for the analysis of the meshing frequency of the gear teeth.
(2) Shaft vibration measurement
The vibration displacement of the shaft shall be measured relative to the housing.A non-contact sensor should be used, and the sensor should be installed as close to the bearing as possible, and fixed at a more rigid part of the box.Vibration shall be measured in three mutually perpendicular directions of the shaft, one of which shall be parallel to the axis.There must be an axial sensor on each shaft.The number and installation position of the measuring points shall be determined through negotiation between the user and the manufacturer.
(3) Vibration measurement of the box
The vibration of the box should be measured at a more rigid part of the box (such as the bearing seat).Measurements should be made in three mutually perpendicular directions, two of which must lie in a plane perpendicular to the axis of rotation of the gear, preferably a horizontal or vertical plane.The number and installation position of sensors shall be determined through consultation between the user and the manufacturer.
Our products are mainly exported to Japan, the United States, Germany, Southeast Asia and other countries and regions. Our customers include many OEM customers specializing in construction machinery. We have partnered with several of the Fortune 500 companies to become one of their major foundry suppliers in China.
How to provide goods?
Usually we will ship the goods to the sea. The factory is only 460 kilometers away from the port. It is very convenient and convenient to transport the goods to any other country. Of course, if your cargo is very urgent, Ningbo Airport and Shanghai Airport are also nearby.
What is the payment term?
When we provide you with a quotation, we will negotiate with you: EXW, FCA, FOB, CIF, CRF, DAP Etc. For mass production, you need to pay 30% of the deposit before production and 70% of the balance before shipment. Our most common way is T/T.
How to ensure the quality of your products?
First, we will check after each process. For finished products, according to customer requirements and international standards.
How many employees does your company have? What is the relationship between technicians?
We now have more than 180 employees, including 36 engineers and 28 QCs.
What is the ability of your company?
We have a number of production lines with a monthly production capacity of 1,600 units and an annual production capacity of 20,000 units.
