According to the requirements of automatic wire bonding machine, micro-nano optical department designed a piezoelectric lead clamp, which is specially designed and developed for clamping bow wire. It has the characteristics of simple structure, fast response speed and high resolution. Because of piezoelectric ceramics
The displacement of piezoelectric ceramics is small, so the amplification mechanism structure is generally adopted to amplify the displacement of piezoelectric ceramics properly.
Characteristic
The clamping displacement reaches 80 μ m
Sub-millisecond response time
The resonant frequency reaches 1.5 kHz
Small in size and light in weight
Principle
The piezoelectric lead clamp is driven by piezoelectric ceramic stack, and outputs the displacement of piezoelectric ceramic stack through mechanical structure. The function of this mechanical structure is to preload the piezoelectric ceramic stack and amplify the displacement of piezoelectric ceramic stack.
The structure of piezoelectric lead clamp consists of piezoelectric ceramic driving source, flexible hinge mechanical amplification structure, fixed gripper and adjustable gripper. The piezoelectric ceramic stack is installed between the clamping jaw and the substrate. When voltage is applied to the piezoelectric ceramic stack, the displacement output by the piezoelectric ceramic stack is amplified to the position where the wire is clamped at the top end of the clamp through the lever arm of the clamp, and the closure of the clamp is controlled to clamp the gold wire. After the voltage is removed, the clamp jaw of the clamp returns to the initial opening and closing position under the action of the flexible hinge, and the clamp is opened to make the gold wire move freely.
|
Model |
XD002-D1 |
unit |
|
Motion degree of freedom |
x |
|
|
Nominal travel range (0 ~ 120V) |
56 |
um±20% |
|
Maximum travel range (-20 ~ 150V) |
80 |
um±20% |
|
Push/pull |
10/1 |
N |
|
Motion direction stiffness |
0.04 |
N/um±20% |
|
No-load resonant frequency |
1500 |
Hz±20% |
|
No-load step time |
0.7 |
ms±20% |
|
No-load full-stroke working frequency |
300 |
Hz |
|
Maximum bearing capacity |
0.05 |
kg |
|
Electrostatic capacity |
0.18 |
uF±20% |
|
Material |
Titanium alloy |
|
|
Weight |
10 |
g±5% |
|
