CNC machining gear,metal parts, copper sleeve

CNC machining gear,metal parts, copper sleeve

CNC machining gear,metal parts, copper sleeve and mechanical parts machining, our factory with strict quality testing to ensure the qualified rate of products, is a high-quality mechanical processing factory.

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Analysis of Key Technologies in the Development of High Speed CNC Machining and Cutting

In order to reduce the auxiliary time and improve efficiency, the shorter the starting and stopping time of CNC CNC electromechanical engineering spindle, the better. Therefore, the higher the starting and stopping speed is required. At present, the starting and stopping acceleration of CNC CNC electromechanical engineering spindle of overseas machine tools can reach more than lg, and the starting and stopping time at full speed is less than l s.

The CNC CNC spindles manufactured by these companies have the following characteristics compared with those manufactured by China: high power and high speed; high speed and high stiffness bearings are selected; high speed and high stiffness bearings are selected for overseas high speed and compact spindles, with emphasis on ceramic bearings and hydrodynamic and hydrostatic bearings; air smooth bearings and magnetic suspensions are selected for unique scenes. Floating bearing; high level of meticulous processing and well-equipped technology; high level of supporting control system, these control systems include rotor automatic average system, bearing oil and gas smooth and meticulous control system, stator and rotor cooling temperature meticulous control system and spindle deformation temperature compensation meticulous control system. On this basis, these foreign manufacturers such as the United States, Japan, Germany, Italy and Switzerland and other developed countries have produced a variety of commercialized high-speed machine tools.

Development Trend of Spindle Technology in CNC CNC Mechanical and Electrical Engineering

A

Continue to develop towards the goal of high speed and high stiffness

Because of the requirement of high speed CNC NC cutting and essential use, along with the development of spindle bearing and its smooth technology, careful processing technology, close moving average technology, high speed cutter and interface technology, high speed CNC spindle for CNC machine tools has become a widespread trend of development, such as drilling. CNC CNC spindle for milling, the speed of HF42 of IBAG in Switzerland reached 140 000 r/min, the speed of D1733 of CNC CNC CNC spindle of WestWind Company in Britain reached 250 000 r/min, the speed of FISCHER in Switzerland reached 42 000 r/min, and CAMFIOR in Italy arrived. 75 000 r/min. As for the stiffness of CNC CNC spindle system, the stiffness of CNC CNC spindle system is increasing due to the development of bearings and smooth technology, which meets the needs of the development of high-speed, high-efficiency and precision machining of CNC machine tools.

B

Developing toward the goal of high speed, high power, low speed and high torque

According to the requirement of its application, numerous CNC machine tools can meet the requirements of heavy CNC  machining in low speed rough machining and finishing in high speed CNC machining. Therefore, the spindle of  CNC mechanical and electrical engineering of machine tools should have the performance of low speed, high torque, high speed and high power. CNC electromechanical engineering spindles for machining centers manufactured by Italian CAMFIOR, Swiss Step-Tec and German GMN are still not difficult to convey over 200 N.m. The larger torque of CNC electromechanical engineering spindles for CNC milling machines and lathes in CYTEC, Germany, reaches 630 N.m. In the high-speed section, the larger torque of CNC electromechanical engineering spindles reaches 630 N.m. In terms of power, it is usually l0-50 kW; CYTEC CNC engineering spindle has a very large transmission power of 50 kW; Switzerland Step-Tec CNC engineering spindle has reached 65 kW (S1) for aircraft manufacturing and die processing; and CNC engineering spindle power has reached 80 kW.

C

Further development towards high precision, high reliability and long working life

Users put forward higher and higher requirements for the accuracy and reliability of CNC machine tools. As one of the core performance components of CNC machine tools,  CNC electromechanical engineering spindle requires higher and higher accuracy and reliability of its own. For example, the radial runout of the spindle is less than 0.001 mm, and the axial positioning accuracy is less than 0.5 um. At the same time, the life of  CNC mechanical and electrical engineering spindle has been lengthened correspondingly due to the selection of unique and careful spindle bearings, advanced smoothing methods and unique preload application methods, and the reliability of  CNC mechanical and electrical engineering spindle is getting higher and higher. Step-Tec CNC engineering spindle is also equipped with acceleration sensors to reduce the vibration acceleration level of bearings. In order to monitor and limit the vibration of bearings, vibration monitoring module is installed to extend the working life of CNC engineering spindle.

D

Diversification of Performance and Mode of CNC Spindle Installed with Electric Ideas

In order to meet the need of essential use, the performance of spindle motor in CNC electromechanical engineering has been improved. For example, the ratio of constant torque and high speed to constant power and high speed (i.e. constant power speed control boundary) of Switzerland FISCHER spindle motor has reached l:14. Otherwise, permanent magnet synchronous CNC electromechanical engineering spindle appeared. Compared with the same power asynchronous CNC electromechanical engineering spindle, the spindle of synchronous CNC electromechanical engineering spindle has smaller size, which is conducive to increasing power density and achieving small size and high power.

E

Quickly start and stop the reaction speed acceleration

In order to reduce the auxiliary time and improve efficiency, the shorter the starting and stopping time of CNC electromechanical engineering spindle, the better. Therefore, the higher the starting and stopping speed is required. At present, the starting and stopping acceleration of CNC electromechanical engineering spindle of overseas machine tools can reach more than lg, and the starting and stopping time at full speed is less than l s.