Spindle Technology

Spindle CNC machine tools in recent years in the field of machine tool spindle and the spindle motor will blend new technology, with linear motor technology, high-speed cutting tool technology, together, will bring high-speed processing to a new era. Spindle is a set of components, which includes the spindle itself and its annex: spindle, high frequency devices, oil mist lubrication, cooling unit, built-in encoder, tool changer and so on.

Spindle Technology:

1.High-speed bearing technology: composite ceramic spindle bearings are usually used, wear heat-resistant, life is a traditional bearing several times; sometimes using electromagnetic levitation bearings or hydrostatic bearings, inner and outer rings do not touch, in theory, infinite life.

2.High-speed motor technology: electric spindle motor together with the product of the spindle, spindle motor rotor is the rotating part, in theory, can be seen as a high-speed spindle motor, the key technology is the high-speed balancing under.

3.Lubrication: Lubrication of spindle oil lubrication commonly used rationing; grease lubrication can also be used, but the corresponding rate should be discounted.

4.The so-called timing, is every note a certain time interval the oil, the so-called quantitative, is through a device called quantitative valve, precise control of fuel injection for each lubricant.

5.The oil lubrication, referring to the oil in the compressed air to carry, and be blown into the ceramic bearings. Oil control is very important, too, would not achieve lubrication; too much rotation in the bearings due to high oil resistance and heat.

6.Cooling: In order to run as soon as possible to high-speed spindle cooling, usually the outer wall of the spindle coolant circulating through the cooling unit's role is to maintain the temperature of the coolant.

7.Built-in pulse encoder: In order to achieve automatic tool change, and rigid tapping, spindle built a pulse encoder, in order to achieve accurate phase control and co-ordination with the feed.

8.Automatic tool changer: In order to apply to the processing center spindle with automatic tool change to the device, including disc spring, pull the knife cylinder.

9.High-speed tool chucking methods: widely known BT, ISO tool, has been proved not suitable for high speed machining. This case there HSK, SKI and other high-speed handle.

10.High-frequency conversion device: spindle per minute to achieve tens of thousands or even hundreds of thousands of RPM, high-frequency inverter must be used to drive the device's built-in high-speed electric spindle motor, the inverter output frequency even need to reach thousands of Hz

Spindle of the latest technology and product trends

Switzerland IBAG technology companies in the industry leading spindle, the company was founded in 1941, production has been slowly spindle 30 years old. Now on to the company's products, for example, let us look at the latest spindle technology and development trends.
Spindle was first used in the grinder, later developed into the processing center. Swiss precision machinery industries such powerful industries have requested a table, as early as 20 years ago in Switzerland, high-speed cutting straight change is increasingly popular, the spindle power and quality have been improved. IBAG provide almost any speed, torque, power, size of the spindle, a wide range of products, the maximum spindle speed of up to 140000r/min, diameter 33 ~ 300mm, power range 125W ~ 80kW, torque range of 0.02 ~ 300Nm. Users may wish to put forward their own power, torque curve, the user can also do special mechanical structure.
IBAG spindle characteristics
IBAG provide a full range of electric spindle systems, including: spindle, vector variable frequency drives, oil lubrication, cooling equipment, piping, cables, tools and so on.
IBAG Spindle product species is complete, a total of 15 classes of several types of spindle 60 products. Whether users are asking for is high speed, high torque or high-power, IBAG always have a product to meet your requirements. So far, IBAG maximum spindle speed is 140000r/min, maximum rated torque is 300Nm, maximum power of 80kW.
Bearings: IBAG composite ceramic spindle bearings, hydrostatic bearings, and magnetic bearings, according to user requirements, can also be used steel bearings. By hydraulic pressure to change the bearing preload to suit different cutting conditions.
Lubrication: IBAG bearing lubrication oil lubrication and grease lubrication are two ways the user can choose one. IBAG direct lubrication technology, so that lubricating oil through the holes on the bearing outer ring directly to the ball, the lubrication of the bearings the same size can work at a higher speed limit, and the amount of oil consumed less.
Air sealing: the front spindle seal using gas to ensure that dust, coolant, etc. do not enter the spindle bearings.
Spindle axial dimension dynamic compensation: a high precision in the location case, IBAG spindle can be provided on a detection device to detect the spindle with the size changes, the change in the size of the analog signal is converted 1V/10μm, to the numerical size of the closed-loop system for dynamic compensation.
Knife Machine Interface: IBAG provide HSK, SKI, CAPTO, BT tool interface, the user can choose one.
Spindle center cooling: IBAG provide spindle coolant option, 30000r/min can be used within the tool coolant, coolant pressure up to 80bar8MPa.
Grasping the knife method: IBAG spindle hydraulic grasping knife, using a hydraulic system to the machine itself; if the machine is not the hydraulic system, IBAG conversion device can be provided by gas-liquid pressure compressed air into the hydraulic pressure to the spindle.
Interface with the CNC system: IBAG spindle system provides both a digital interface, analog interface is also provided, and any numerical control system did not match the problem. Built-in encoder output sine wave.
Spindle drive: IBAG provide high performance vector drive spindle, but considering the convenience of users, can also choose to Siemens, Fanuc, Indramat or other brands of spindle drive.
The machining process is now required by increasing spindle speed, high-speed products are also increasingly becoming a measure of the level of signs, as the focus of business competition, who should use a higher speed of the spindle, who will be in fierce competition in have a hard card. Trend is: the professional manufacturers of high-quality machine tool spindle to replace the traditional manufacturers produce their own spindle, spindle rail line will be the same as a standard machine components. China's Jinan Machine Tool Group Co., Ltd., Changzhou multi-row CNC Machine Tool Co., Ningjiang Machine Tool Group Co., Ltd., Qinchuan Machine Tool Group Co., Ltd., Dongfeng equipment factory, manufacturing company Jie, Hunan University, Shanghai, Dongguan Branch very Automation, Kunshan G01 mold tool manufacturing companies have their products used IBAG's spindle, some of which will be on display in CIMT2003.