The causes of the noise generated by the CNC machine tool spindle and how to solve it?

In many CNC machine tools, because the transmission system of the main shaft still uses a number of transmission shafts, gears, and bearings, vibration, noise, friction noise, and impact noise are unavoidably generated in the work. The speed change of the main drive system of the CNC machine tool is controlled by the computer under the condition that the machine tool does not stop working. Therefore, it is more continuous and representative than the noise generated by the ordinary machine tool. The mechanical system is subjected to any external excitation force and the system will vibrate in response to this excitation force. This vibrational energy propagates throughout the system. When it propagates to the surface of the radiation, this energy is converted into a pressure wave that is transmitted through the air, ie sound radiation.

Therefore, the three steps of excitation response, system internal transmission and acoustic radiation are the formation process of vibration noise, friction noise and impact noise.

(1) The main drive system of CNC machine tools mainly relies on gears to complete the transmission and transmission. Therefore, the meshed transmission of gears is one of the major noise sources.

(2) The assembly, preload, concentricity, lubrication conditions of the bearings and journals and bearing holes, as well as the size of the load acting on the bearings, radial clearance, etc., have a great influence on the noise. And the manufacturing deviation of the bearing itself largely determines the noise of the bearing.

Electric Water Kettle

Electric water kettle

If you are new to the concept of using an electric kettle, you might be overwhelmed by the variety of electric kettles that are displayed on the store shelves and have difficulty deciding which one would be the best to suit your individual needs or desires. This introduction will give you some basic information about some of the features that are available on various types of electric kettles so that you can make a more informed decision when choosing one for use in your home.

Features:

Spend few minutes to boil : After 5 minutes, hot water will finish for you to drink.

3 protection functions : The on/off button is on the handle, making it easy to turn the kettle off when you pick it up. A concealed heating unit reduces the amount of buildup in the kettle.

It will be a problem when you forget to close the button.Once the water boils the kettle shuts itself off.Do not have to worry about damaging it by letting it run dry. When water runs dry,It will cut the electric by itself.

Multiple Cups: Water can be loaded to 1.8Liter.

Materials :

Food grade stainless steel, more healthy and hygienic. PP handle wieh heat insulation material provides scald resistance. Durable controller performance with 360 degree rotation cordless base design.

OEM & ODM service : Try best to support you during production and provide better after-sales service.Enhance your brand popularity.

Application:

Make a cup of tea.

Boil eggs.

Cook noodles.

Electric Water Kettle,Aluminium Electric Water Kettle,Mini Electric Water Kettle,Stainless Steel Electric Water Kettle

Guangzhou Taipeng Electrical Appliances Technology CO., LTD. , https://www.taipengelectrics.com