JSWAY | Leading CNC Lathe Manufacturer Since 2007
What are the structure features of CNC lathe spindle components
CNC lathes have spindle parts, some as long as a spindle unit, you will have more than one. Spindle is referring to the machine drives the workpiece or tool rotating shaft, ladder is a hollow shaft, hollow shaft takes up a larger volume, but can drop in weight. On the basis of material mechanics analysis, when the shaft transmission torque, look from the radial cross section, the more the greater the effect of local transfer useful outside of torque. Transfer bigger torque in the shaft demand, demand is relatively coarse trunnion. And because in the effect of the transmission torque axis part is lesser, so generally choose hollow, in order to cut down the weight of a shaft. Generally by the main shaft, bearing and transmission parts ( Gear or pulley) Of the main shaft parts. Motion precision of the spindle assembly and structural stiffness is essential to determine the processing quality and cutting power. Target measure of spindle assembly function mainly rotation precision and rigidity and speed adaptive. (1) rotation accuracy: under the condition of no load, low speed, the radial and axial runout ( See the form tolerance) Main shaft and bearing, mainly depends on the quality of manufacture and installation. (2) the dynamic and static stiffness: mainly is decided by the twists and turns of the spindle stiffness, the stiffness and damping of the bearing. The spindle static stiffness is insufficient to directly affect the machining accuracy and the function of machine tool. (3) speed adaptability: the promise of the highest speed and speed range, mainly is decided by the structure of bearing and smooth, and the cooling conditions. Is for the implementation of the machine tool spindle parts, its function is to support and drive the workpiece or tool, end forming movement appearance, at the same time also on transfer movement and torque and cutting force and driving force under the effect of the load. Main shaft aperture is one of the elements that affect the stiffness, the spindle hole is used to pass and tool clamping equipment, can also be used to after the joint pneumatic, hydraulic chuck. ( Hollow rod) 。 Spindle hole diameter is larger, can pass the bigger the diameter of the bar, and the application range of machine tool is more wide, also the lighter shaft parts. Spindle hole diameter is mainly affected by the size of the main shaft stiffness. When spindle's inner hole diameter and the ratio of the diameter of less than 0. 3, the stiffness of hollow spindle is with solid spindle rigidity properly: when the ratio of the spindle spindle diameter and the diameter of inner hole of 0. 5, the stiffness of hollow spindle is 90% solid shaft stiffness; When the spindle hole diameter and the ratio of the spindle diameter greater than zero. A sharp drop in 7, the stiffness of hollow spindle.
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I. Functional role
Slideways are the “track” between the guide rail and the moving parts. They convert the rotary (or linear) thrust of the servo motor into precise linear motion of the machine table, spindle box or turret, while withstanding cutting reaction forces, shocks and vibrations. Once the slideway fails, the positioning accuracy and surface quality of the whole machine will drop directly.
II. Common structure family
Linear ball slideway
Steel balls are in point contact with the raceway, low friction and fast response, suitable for high-speed and light-load Swiss-type lathes or vertical machining centers.
Linear roller slideway
Cylindrical rollers are in line contact with the raceway, high rigidity and large load capacity, the first choice for heavy-cutting equipment such as turn-mill centers and gantry five-face machines.
Dovetail slideway
Triangular interlocking surface, extremely strong lateral force resistance, often used in grinders or ultra-precision machining units that require micro-feed.
Hydrostatic/hydraulic slideway
Oil film supports moving parts, almost zero wear, used for mirror grinding or heavy-duty boring machines, but demanding on the oil supply system.
On September 3, 2025, China solemnly commemorated the victory in the War of Resistance Against Japanese Aggression and the World Anti-Fascist War. Behind the pageantry that displayed national strength and a commitment to peace, countless Chinese manufacturers are injecting their craftsmanship and cooperative spirit into the global economy. JSWAY CNC COMPANY is one of them, answering the call for peace and development in its own way.
For two decades JSWAY has focused on high-configuration, high-precision, high-speed CNC lathes and Swiss-type lathes. Products now reach more than thirty countries and regions, illustrating the principle of “peace through development, excellence through quality.”
True high-end manufacturing is not only technological breakthrough but also stability of quality. JSWAY’s plant houses about forty thousand square metres of floor space, producing Swiss-type lathes, turn-mill centres, gang-tool lathes and turret lathes. Critical components are machined on horizontal machining centres, gantry-type five-face machining centres and precision grinders, ensuring consistent accuracy.
An engineering data centre and joint laboratory use laser interferometers, eddy-current displacement testers, wireless rotary axis calibrators, high-precision digital temperature sensors and real-time machine-error compensation systems to upgrade products continuously.