Multi-degree-of-freedom sample holder
AssigneeZhejiang University
InventorsHongtao Wang, Yizhi Zhang
Life of this patent
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Abstract
A multi-degree-of-freedom sample holder, comprising a housing and a rotating shaft, is disclosed. A frame is provided between the housing and the rotating shaft, and the frame is coaxial with the housing and rotating shaft. The present invention has multiple degrees of freedom such as high-precision translational freedom of the sample along the X-axis, Y-axis and Z-axis, and 360° rotation of the sample around the axis, etc. The sample is always aligned with the sample holder shaft during the rotation, and the static electricity accumulated on the sample can be led out.
Claims22
A multi-degree-of-freedom sample holder, comprising a housing and a rotating shaft, wherein a frame is provided between the housing and the rotating shaft, and the frame is coaxial with the housing and the rotating shaft;
- the housing is provided with an inner chamber, the rotating shaft is positioned on the inner chamber of the housing and a self-positioning mechanism is arranged in the inner chamber;
- the self-positioning mechanism comprises a supporting block and a pressing plate, the supporting block is provided with a symmetrical inclined plane, and the inclined plane of the supporting block is in contact with the rotating shaft;
- the pressing plate is provided with a flat plate, and two sides of the flat plate are symmetrically provided with slopes;
- the rotating shaft is positioned between the supporting block and the pressing plate;
- a wear-resistant layer is arranged on the surface of the flat plate that is contact with the rotating shaft;
- the pressing plate is provided with a pair of mounting wings, and fixing holes are arranged on the mounting wings, and the mounting wings are assembled to the frame through an elastic mounting assembly.
A multi-degree-of-freedom sample holder with a rotating shaft drive assembly, comprising a frame and a rotating shaft, at least one set of rotating shaft drive assembly is arranged between the frame and the rotating shaft, and each set of the rotating shaft drive assembly includes a drive unit, and the drive unit includes a substrate and a piezoelectric ceramic sheet;
- the substrate is a printed circuit board, the substrate has a ceramic sheet area and an electrode area, the piezoelectric ceramic sheet is stacked and bonded to the ceramic sheet area, a conductive coating is evenly coated on the surfaces at both sides of the piezoelectric ceramic sheet, the conductive coating is an upper-layer electrode and a lower-layer electrode;
- the electrode area is provided with multiple circuits, and the circuits are electrically connected to the conductive coating on the surface of the piezoelectric ceramic sheet;
- the ceramic sheet area is provided with one piezoelectric ceramic sheet, or is stacked with at least two piezoelectric ceramic sheets, when there are at least two piezoelectric ceramic sheets, the telescopic direction of the piezoelectric ceramic sheets is different from each other;
- the substrate is provided with a recess and a pair of mounting holes, the mounting holes are used as the front and rear ends of the substrate, the ceramic sheet area and the electrode area are positioned in the center of the substrate, the recess is positioned at the front and rear ends of the substrate and around the mounting holes;
- the ceramic sheet area and the electrode area are positioned on the left and right sides of the substrate;
- when there are at least two piezoelectric ceramic sheets, the lower-layer electrode of the lowermost piezoelectric ceramic sheet is in direct contact with the ceramic sheet area on the substrate, and is connected to the electrode area on the substrate through the circuit on the ceramic sheet area;
- the upper-layer electrode surface of the uppermost piezoelectric ceramic sheet is provided with an area A and an area B;
- the drive unit is provided with a wear-resistant sheet, and the wear-resistant sheet is pasted to the area A;
- the area B is electrically connected to an adapter cable;
- one end of the adapter cable is electrically connected to the electrode area on the substrate.
A multi-degree-of-freedom sample holder having an electrostatic lead-out function, the sample holder is provided with a nanopositioner, the nanopositioner includes a pressing component assembly, and the pressing component assembly includes at least two pressing components and an elastic connecting component, and a nano-actuator provided with a casing for loading samples, the casing is provided with a pre-tightening screw for locking samples, wherein the tail end of the nano-actuator is provided with an electrostatic lead-out component, the pre-tightening screw and the electrostatic lead-out component are conductive, and the nano-actuator is provided with an electrical path that is in communication with the pre-tightening screw and the electrostatic lead-out component, the electrostatic lead-out component is connected with the wire;
- the electrical path includes a pressing component assembly and a connecting wire, the pressing component assembly includes a first pressing component and a second pressing component, both the first pressing component and the second pressing component are conductors, the electrostatic lead-out component is positioned on the second pressing component, at least one elastic connecting component is provided between the first pressing component and the second pressing component, the elastic connecting component includes a screw rod and a spring, the spring is sleeved on the screw rod, and both the screw rod and the spring are conductors;
- the electrostatic lead-out component is a conductive screw.
Dependencies are inferred from the claim text.