一种AI芯片PCB板钻孔机用16万转超声波电主轴
By using a combination of nano-carbon fiber bearings and compression spring electromagnets in ultrasonic electric spindles, the problem of impact between the spindle shoulder and the bearing in non-working conditions is solved, thus maintaining the stability and vibration uniformity of the electric spindle and improving its protection and working efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LUOYANG CHUANSHUN MACHINERY EQUIP
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing ultrasonic electric spindles suffer impact damage between the shaft shoulder and the axial air bearing due to bumps during freight transport when not in operation, affecting the uniformity of the air film and the stability of the vibration amplitude.
The axial air bearing is made of carbon nanofiber material. Through the cooperation of compression spring and electromagnet, the shaft shoulder achieves mechanical elastic self-locking retention in the non-working state, reducing the risk of impact. In the working state, the electromagnet attracts the compression spring and disengages from the spindle shaft to ensure rotational stability.
It effectively reduces impact damage during non-working conditions, maintains the uniformity of the air film and the stability of vibration amplitude, and improves the protection efficiency and working mode switching efficiency of the electric spindle.
Smart Images
Figure CN224509858U_ABST
Abstract
Claims
1. A 160,000 RPM ultrasonic electric spindle for drilling AI chip PCB boards, comprising a spindle housing (6), wherein a rotatable spindle shaft (5) and a motor (7) for driving the spindle shaft (5) to rotate are provided in the spindle housing (6), the spindle shaft (5) has a shoulder (4), and radial air bearings (11) for supporting the periphery of the spindle shaft (5) and axial air bearings (3) for supporting both sides of the shoulder (4) are provided in the spindle housing (6), wherein the axial air bearings (3) are all made of nano-carbon fiber material with uniformly open pores, and the density of the open pores of the two axial air bearings (3) located on both sides of the shoulder (4) is different, characterized in that: A compression spring (9) is provided in the spindle housing (6) at the tail end of the spindle shaft (5). The two ends of the compression spring (9) are in contact with the tail end of the spindle shaft (5) and the spindle housing (6) respectively, so as to push the shoulder (4) against the axial air bearing (3) on the corresponding side.
2. The 160,000 rpm ultrasonic electric spindle for an AI chip PCB board drilling machine according to claim 1, characterized in that: A first electromagnet (8) is provided on one end of the compression spring (9) for contacting the spindle shaft (5), and a second electromagnet (10) is provided on the spindle housing (6) at the position corresponding to the other end of the compression spring (9). When the first electromagnet (8) and the second electromagnet (10) are energized, they attract each other and can separate the compression spring (9) from the spindle shaft (5).
3. The 160,000 RPM ultrasonic electric spindle for an AI chip PCB board drilling machine as described in claim 2, characterized in that: The start switches of the first electromagnet (8) and the second electromagnet (10) are linked with the motor (7).
4. The 160,000 RPM ultrasonic electric spindle for an AI chip PCB board drilling machine as described in claim 1, characterized in that: The motor (7) is a synchronous motor. The stator (701) of the motor (7) is fixed on the main shaft housing (6), and the rotor (702) of the motor (7) is fixed on the main shaft shaft (5).
5. The 160,000 RPM ultrasonic electric spindle for an AI chip PCB board drilling machine as described in claim 1, characterized in that: The motor (7) is located in the middle of the spindle housing (6), and radial air bearings (11) are provided on both sides of the motor (7) in the spindle housing (6).
6. The 1600K RPM ultrasonic electric spindle for AI chip PCB board drilling machine of claim 1, wherein: The radial air bearings (11) are all made of nano-carbon fiber material with uniformly open air pores.
7. The 1600 rpm ultrasonic electric spindle for AI chip PCB board drilling machines of claim 1, wherein: The two axial air bearings (3) located on both sides of the shoulder (4) share a high-pressure air intake.
8. The 1600 rpm ultrasonic electric spindle for AI chip PCB board drilling machine according to claim 1, characterized in that: The shoulder (4) is located near the head of the spindle shaft (5).