- Hello Customer - Log in or Register!
High-speed machining is a high-tech 21st century, it is a high efficiency, high precision and high surface quality is the basic characteristic, in aerospace, automotive, mold manufacturing, optical engineering and instrumentation and other industries gained more wide range of applications and has made significant technical and economic benefits of contemporary advanced manufacturing technology is an important component. In order to achieve high-speed processing, first of all have high speed CNC machine tools. High-speed CNC machine tools must have both high-speed and high-speed spindle system feed system in order to achieve high-speed material removal process. In order to achieve high feed, domestic and foreign manufacturers continue to take measures to increase ball speed performance. Main measures are:
1) appropriate to increase the rotational speed of the screw, lead and threaded heads. The commonly used name of large lead ball screw diameter and lead the match as: 40mm × 20mm, 50mm × 25mm, 50mm × 30mm, with its feed speed can reach 60m/min or more. In order to improve the stiffness and load capacity ball screw, ball screw generally use large lead-ply to increase the effective carrying the ball laps.
2) Improved structure, improve ball movement fluency. Improved reverse ball circulation unit, optimizing the curve parameters back bead groove, three-dimensional shape of the guide tube and the back bead beads devices, truly along the inner direction of the lead angle of the thread introduction of the nut body of the ball, allowing the ball movement tangential direction of the raceway and not intersect. The impact of this loss and noise can be reduced to a minimum.
3)The use of "hollow strong cold" technology. Bearings High-speed ball screw at run time due to the friction generated heat, causing thermal deformation of the screw, a direct impact on high-speed machining accuracy. The use of "hollow strong cold" technique, cutting fluid is introduced into the thermostat hole in the hollow screw, the screw, forced cooling, keeping the temperature constant sub balls. This measure is to improve the medium and large working precision ball screw speed performance and effective way.
4) For large stroke speed feed system, using screw fixing, nut rotation transmission mode. At this time, while turning the nut, an edge fixed screw for axial movement, the screw does not move, can be avoided by the critical speed limits, to avoid the elongated screw at high speed problems arise. Nut inertia, flexible movement, enabling high speed.
5)Further improve manufacturing quality ball screw. By adopting these measures, may to some extent overcome the traditional ball screw some problems. Japan and Switzerland in the high-speed ball screw has been a leading international position in rapid traverse speeds up to its maximum 60m/min, individual cases even up to 90m/min, acceleration up to 15m/s2. Because ballscrew historic, mature technology, widely used, low cost, so the medium load, the feed speed is not very high, the travel range is not too large (less than 4 ~ 5m) of the general high-speed machining centers and other economic high-speed CNC machine tools are still often used.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| NU2315E NTN | 75 | 160 | 55 |
| NU2315 NTN | 75 | 160 | 55 |