Self-centering clamping assembly and autocollimator eccentricity detection device

Abstract

The utility model discloses a self-centering clamping assembly and an autocollimator eccentricity detection device. The device comprises a turntable, a clamping jaw, a base and a positioning ring arranged on the base, the turntable is arranged at the opening of the positioning ring and can rotate relative to the positioning ring by taking the axis of the positioning ring as a rotating shaft; at least three clamping jaws are arranged in the circumferential direction of the turntable; one ends of the clamping jaws are respectively hinged with the turntable and the base; the other end of the clamping jaw forms a clamping structure in the turntable; when a material to be detected is placed in the clamping structure formed by the clamping jaws, all the clamping jaws can be synchronously driven to be opened and closed by rotating the rotary table, and if the material to be detected deviates from the center of the rotary table, the material to be detected can move towards the center of the rotary table under the action of the clamping jaws, so that the accuracy of a subsequent eccentric detection result is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of eccentricity detection equipment, and particularly relates to a self-centering clamping component and an eccentricity detection device for an autocollimator. Background Art

[0002] When producing and processing optical lenses or lens components, some samples are often taken in batches for eccentricity detection. However, the existing eccentricity device still uses a three-jaw chuck to clamp the samples. Because the clamping force of the three-jaw chuck is difficult to control, it will not only reduce the positioning accuracy of the sample after clamping, but also often damage the sample, thereby increasing production costs. Utility Model Content

[0003] The technical problem to be solved by the utility model is: how to provide a self-centering clamping component and an autocollimator eccentricity detection device to improve the clamping accuracy of materials, thereby facilitating eccentricity detection.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A self-centering clamping assembly comprises a turntable, a clamping claw, a base, and a positioning ring arranged on the base;

[0006] The rotating disk is arranged at the opening of the positioning ring, and the rotating disk can rotate relative to the positioning ring with the axis of the positioning ring as the rotation axis;

[0007] At least three clamping claws are arranged on the circumference of the rotating disk;

[0008] One end of the clamping claw is hinged to the rotating disk and the base respectively;

[0009] The other end of the clamping claw forms a clamping structure in the rotating disk.

[0010] Further, it also includes an elastic torsion spring;

[0011] The rotating disk and the base are elastically connected via an elastic torsion spring;

[0012] The elastic torsion spring is arranged at the center of the rotating disk.

[0013] Furthermore, it also includes a movable pull rod and a fixed pull rod;

[0014] The positioning ring is provided with an avoidance notch along its circumference;

[0015] One end of the movable pull rod passes through the avoidance gap and is connected to the turntable;

[0016] The fixed pull rod is arranged on the outer circumferential surface of the positioning ring.

[0017] Furthermore, the support surface of the rotating disk and the open end of the positioning ring are respectively provided with a first hinge axis and a second hinge axis;

[0018] One end of the clamping claw is hinged to the corresponding first hinge shaft and the second hinge shaft.

[0019] Furthermore, a guide notch is provided on the clamping jaw;

[0020] The second hinge shaft is arranged in the guide notch and is slidably connected to the inner wall of the guide notch.

[0021] Further, it also includes a clamping rod;

[0022] The axis of the clamping rod is perpendicular to the supporting surface of the turntable;

[0023] One end of the clamping rod is connected to the other end of the clamping claw;

[0024] The other end of the clamping rod is arranged in a direction away from the rotating disk.

[0025] Furthermore, an eccentricity detection device is provided, characterized in that it comprises a positioning seat, the self-centering clamping assembly described above, and a multi-dimensional adjustment device and an autocollimator optical assembly arranged on the positioning seat;

[0026] The self-centering clamping assembly is connected to the positioning surface of the multi-dimensional adjustment device through a base;

[0027] The detection end of the autocollimator optical component and the center of the rotating disk are arranged opposite to each other.

[0028] Further, the autocollimator optical assembly includes a linear displacement device and a detector;

[0029] The detector is connected to the movable end of the linear displacement device;

[0030] The movement direction of the linear displacement device is perpendicular to the supporting surface of the turntable;

[0031] The detection end of the detector and the supporting surface of the turntable are arranged opposite to each other.

[0032] The beneficial effect of the utility model is that the self-centering clamping assembly provided by the utility model can synchronously drive all the jaws to open and close by rotating the turntable when the material to be tested is placed in the clamping structure formed by the jaws. If the material to be tested deviates from the center of the turntable, it can move toward the center of the turntable under the action of the jaws, thereby effectively improving the accuracy of the subsequent eccentricity detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Shown is a structural schematic diagram of a self-centering clamping assembly according to a specific embodiment of the utility model;

[0034] Figure 2 Shown Figure 1 A magnified view of point A;

[0035] Figure 3 Shown is a structural schematic diagram of an eccentricity detection device according to a specific embodiment of the utility model;

[0036] Description of labels:

[0037] 1. Turntable; 11. First articulated axis;

[0038] 2. Clamping claw; 21. Guide notch; 22. Clamping rod;

[0039] 3. Base;

[0040] 4. Positioning ring; 41. Avoidance notch; 42. Second hinge axis;

[0041] 5. Movable pull rod;

[0042] 6. Fix the pull rod;

[0043] 7. Positioning seat;

[0044] 8. Multi-dimensional adjustment device;

[0045] 9. Autocollimator optical assembly; 91. Linear displacement device; 92. Detector;

[0046] 10. Materials to be tested. DETAILED DESCRIPTION

[0047] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0048] The most critical concept of the utility model is that when the material to be tested is placed in the clamping structure formed by the jaws, all the jaws can be synchronously driven to open and close by rotating the turntable. If the material to be tested deviates from the center of the turntable, it can move toward the center of the turntable under the action of the jaws, thereby effectively improving the accuracy of the subsequent eccentricity detection results.

[0049] Please refer to Figures 1 to 3 The self-centering clamping assembly provided by the utility model comprises a turntable 1, a clamping claw 2, a base 3, and a positioning ring 4 arranged on the base 3;

[0050] The turntable 1 is arranged at the opening of the positioning ring 4, and the turntable 1 can rotate relative to the positioning ring 4 with the axis of the positioning ring 4 as the rotation axis;

[0051] At least three clamping claws 2 are provided on the circumference of the rotating disk 1;

[0052] One end of the clamping claw 2 is hinged to the rotating disk 1 and the base 3 respectively;

[0053] The other end of the clamping claw 2 forms a clamping structure inside the rotating disk 1 .

[0054] Specifically, an opening is provided at the top of the positioning ring 4, and the rotating disk 1 is adapted to the opening and can rotate relative to the positioning ring 4 at the opening with the axis of the positioning ring 4 as the rotation axis.

[0055] From the above description, it can be seen that the beneficial effects of the utility model are: providing a self-centering clamping assembly, when the material to be tested is placed in the clamping structure formed by the clamping jaws 2, all the clamping jaws 2 can be synchronously driven to open and close by rotating the turntable 1, and if the material to be tested deviates from the center of the turntable 1, it can move toward the center of the turntable 1 under the action of the clamping jaws 2; compared with the existing clamping assembly, the staff can sense the force applied by the clamping jaws 2 on the material by rotating the turntable 1. When the clamp is in place, the turntable 1 and the positioning ring 4 are locked by any locking device (such as a buckle or a positioning pin), which can ensure that the material to be tested can be stably fixed on the turntable 1, thereby providing a guarantee for improving the accuracy of subsequent eccentricity detection.

[0056] Furthermore, the above-mentioned self-centering clamping assembly further includes an elastic torsion spring;

[0057] The turntable 1 and the base 3 are elastically connected via an elastic torsion spring;

[0058] The elastic torsion spring is arranged at the center of the turntable 1 .

[0059] From the above description, it can be seen that when the turntable 1 is rotated by an external force to a certain angle and then the external force is removed, the turntable 1 can rotate back to the initial position under the action of the elastic torsion spring, thereby realizing the automatic closing of the clamp 2, that is, the staff rotates the turntable 1 to drive the clamp 2 to expand and then releases the turntable 1, and the clamp 2 can automatically complete the clamping work of the material.

[0060] Furthermore, the above-mentioned self-centering clamping assembly further includes a movable pull rod 5 and a fixed pull rod 6;

[0061] The positioning ring 4 is provided with an avoidance notch 41 along its circumference;

[0062] One end of the movable pull rod 5 passes through the avoidance gap 41 and is connected to the turntable 1;

[0063] The fixed pull rod 6 is arranged on the outer circumferential surface of the positioning ring 4 .

[0064] From the above description, it can be seen that the design has further optimized the composition structure of the self-centering clamping assembly. When controlling the opening and closing of the clamping jaws 2, the staff only needs to hold the fixed pull rod 6 and the movable pull rod 5 respectively, and drive the movable pull rod 5 to rotate circumferentially along the positioning ring 4, so as to drive the turntable 1 to rotate to adjust the opening and closing degree of the clamping jaws 2. That is, the movable pull rod 5 and the fixed pull rod 6 can facilitate the staff to apply force, thereby making the adjustment of the clamping jaws 2 more convenient.

[0065] Furthermore, the support surface of the turntable 1 and the open end of the positioning ring 4 are respectively provided with a first hinge axis 11 and a second hinge axis 42;

[0066] One end of the clamping jaw 2 is hinged to the corresponding first hinge shaft 11 and second hinge shaft 42 .

[0067] Furthermore, a guide notch 21 is provided on the clamping jaw 2;

[0068] The second hinge shaft 42 is disposed in the guide notch 21 and is slidably connected to the inner wall of the guide notch 21 .

[0069] From the above description, it can be seen that the design has made specific improvements to the connection structure between the clamping jaw 2 and the turntable 1 and the positioning ring 4, thereby providing structural support for the clamping jaw 2 to rotate and open and close; and a guide notch 21 is further provided on the clamping jaw 2, and the second hinge shaft 42 and the guide notch 21 are slidably connected, so that when the clamping jaw 2 needs to open and close at a large angle, it can avoid the second intersection shaft from limiting the opening and closing angle of the clamping jaw 2 due to the inability to move relative to the clamping jaw 2, and can also avoid the problem of the clamping jaw 2 and the second hinge shaft 42 being separated due to the large opening and closing angle, thereby affecting the normal clamping work.

[0070] Furthermore, the above-mentioned self-centering clamping assembly further includes a clamping rod 22;

[0071] The axis of the clamping rod 22 is perpendicular to the supporting surface of the turntable 1;

[0072] One end of the clamping rod 22 is connected to the other end of the clamping jaw 2;

[0073] The other end of the clamping rod 22 is arranged in a direction away from the turntable 1 .

[0074] Specifically, the clamping rod 22 is made of any commercially available material with a certain strength, such as PEEK (polyetheretherketone).

[0075] From the above description, it can be seen that the design further optimizes the component structure of the clamping jaw 2. By setting the clamping rod 22, the clamping range of the clamping jaw 2 can be effectively extended; when the volume of the material to be clamped is too large, the cooperation between the multiple clamping rods 22 can better and stably fix the material on the self-centering clamping assembly, thereby effectively improving the accuracy of subsequent eccentricity detection work.

[0076] The utility model also provides an autocollimator eccentricity detection device, comprising a positioning seat 7, any of the above self-centering clamping components, and a multi-dimensional adjustment device 8 and an autocollimator optical component 9 arranged on the positioning seat 7;

[0077] The self-centering clamping assembly is connected to the positioning surface of the multi-dimensional adjustment device 8 through the base 3;

[0078] The detection end of the autocollimator optical component 9 and the center of the turntable 1 are arranged opposite to each other.

[0079] Specifically, the multi-dimensional adjustment platform 8 can be obtained from O-Optic Technology (Fujian) Technology Co., Ltd., and the model of the multi-dimensional adjustment platform 8 is OC102-240.

[0080] Further, the autocollimator optical assembly 9 includes a linear displacement device 91 and a detector 92;

[0081] The detector 92 is connected to the movable end of the linear displacement device 91;

[0082] The movement direction of the linear displacement device 91 is perpendicular to the support surface of the turntable 1;

[0083] The detection end of the detector 92 and the supporting surface of the turntable 1 are arranged opposite to each other.

[0084] Specifically, the detector 92 is based on a high-resolution CCD sensor or a PSD sensor, and is designed by combining collimating objective lenses with different focal lengths, so that the detector 92 has a very wide measurement range and a variety of measurement accuracy to meet different measurement needs; the detector 92 of the utility model can be obtained from Ouguan Technology (Fujian) Technology Co., Ltd., the model of the detector 92 is TA300-38, and the detector 92 has a series of products, and the staff can choose different models of detectors 92 according to actual needs.

[0085] From the above description, it can be seen that the design makes specific modifications to the composition structure of the autocollimator eccentricity detection device and the composition structure of the autocollimator optical component 9, thereby providing structural support for the autocollimator eccentricity detection device to reliably detect the eccentricity data of the material.

[0086] The self-centering clamping assembly of the utility model can assist the clamping work of materials.

[0087] Please refer to Figure 1 To the figure, the first embodiment of the utility model is:

[0088] A self-centering clamping assembly comprises a turntable 1, a clamping jaw 2, an elastic torsion spring, a movable pull rod 5, a fixed pull rod 6, a clamping rod 22, a base 3, and a positioning ring 4 arranged on the base 3; the turntable 1 is arranged at the opening of the positioning ring 4, and the turntable 1 can rotate relative to the positioning ring 4 with the axis of the positioning ring 4 as the rotation axis; three clamping jaws 2 are arranged in the circumference of the turntable 1; one end of the clamping jaw 2 is hinged to the turntable 1 and the base 3 respectively; the other end of the clamping jaw 2 forms a clamping structure in the turntable 1; the turntable 1 and the base 3 are elastically connected by an elastic torsion spring; the elastic torsion spring is arranged at the center of the turntable 1; the positioning ring 4 is provided with an avoidance notch 41 along its circumference; the movable pull rod 5 is arranged at the center of the turntable 1 ... One end of the rod 5 passes through the avoidance gap 41 and is connected to the turntable 1; the fixed pull rod 6 is arranged on the outer cylindrical surface of the positioning ring 4; the supporting surface of the turntable 1 and the open end of the positioning ring 4 are respectively provided with a first hinge axis 11 and a second hinge axis 42; one end of the clamping jaw 2 is hinged with the corresponding first hinge axis 11 and second hinge axis 42; the clamping jaw 2 is provided with a guide gap 21; the second hinge axis 42 is arranged in the guide gap 21 and is slidably connected to the inner wall of the guide gap 21; the axis of the clamping rod 22 is perpendicular to the supporting surface of the turntable 1; one end of the clamping rod 22 is connected to the other end of the clamping jaw 2; the other end of the clamping rod 22 is arranged in the direction away from the turntable 1.

[0089] Please refer to Figures 1 to 3 , Embodiment 2 of the present utility model is:

[0090] A device for detecting eccentricity of an autocollimator comprises a positioning seat 7, a self-centering clamping assembly in the first embodiment, and a multi-dimensional adjustment device 8 and an autocollimator optical assembly 9 arranged on the positioning seat 7; the self-centering clamping assembly is connected to the positioning surface of the multi-dimensional adjustment device 8 through a base 3; the detection end of the autocollimator optical assembly 9 is arranged relative to the center of a turntable 1; the autocollimator optical assembly 9 comprises a linear displacement device 91 and a detector 92; the detector 92 is connected to the movable end of the linear displacement device 91; the movement direction of the linear displacement device 91 is perpendicular to the support surface of the turntable 1; the detection end of the detector 92 is arranged relative to the support surface of the turntable 1.

[0091] The working principle of the utility model is as follows: first, the staff holds the fixed pull rod 6 and the movable pull rod 5 respectively, and drives the movable pull rod 5 to rotate along the circumferential direction of the positioning ring 4, so that the turntable 1 rotates to drive the clamping jaws 2 to expand; then, the material to be detected is placed on the turntable 1, and the movable pull rod 5 is released. After the external force is removed, the turntable 1 rotates back to the initial position under the action of the elastic torsion spring, thereby driving the automatic closing of the clamping jaws 2, and under the drive of all the clamping jaws 2, the material to be detected is moved to the center of the turntable 1 and the material is reliably clamped; then, the positions of the material to be detected and the detector 92 are adjusted respectively by the multi-dimensional adjustment device 8 and the linear displacement device 91, until they are moved to the specified position, and the detector 92 is started to perform eccentric detection.

[0092] In summary, the utility model provides a self-centering clamping assembly, which can synchronously drive all the jaws to open and close by rotating the turntable. If the material to be detected deviates from the center of the turntable, it can move toward the center of the turntable under the action of the jaws; compared with the existing clamping assembly, the staff can sense the force applied by the jaws on the material by rotating the turntable. When the clamp is in place, the turntable and the positioning ring are locked by any locking device (such as a buckle or a positioning pin), which can ensure that the material to be detected can be stably fixed on the turntable, thereby providing a guarantee for improving the accuracy of subsequent eccentricity detection; and in order to realize the automatic clamping work of the jaws, a corresponding elastic torsion spring is arranged between the turntable and the base, and the elastic torsion spring is arranged at the center of the turntable, so that when the turntable is relieved of external force, the turntable can be rotated back to the initial position under the action of the elastic torsion spring, thereby realizing the automatic closing of the jaws, that is, the staff rotates the turntable to drive the jaws to expand and then releases the turntable, and the jaws can automatically complete the clamping work of the material.

[0093] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A self-centering clamping assembly, characterized in that: It includes a rotating disk, a clamping claw, a base, and a positioning ring arranged on the base; The rotating disk is arranged at the opening of the positioning ring, and the rotating disk can rotate relative to the positioning ring with the axis of the positioning ring as the rotation axis; At least three clamping claws are arranged on the circumference of the rotating disk; One end of the clamping claw is hinged to the rotating disk and the base respectively; The other end of the clamping claw forms a clamping structure in the rotating disk.

2. The self-centering clamping assembly according to claim 1, characterized in that: Also included is an elastic torsion spring; The rotating disk and the base are elastically connected via an elastic torsion spring; The elastic torsion spring is arranged at the center of the rotating disk.

3. The self-centering clamping assembly according to claim 1, characterized in that: It also includes a movable pull rod and a fixed pull rod; The positioning ring is provided with an avoidance notch along its circumference; One end of the movable pull rod passes through the avoidance gap and is connected to the turntable; The fixed pull rod is arranged on the outer circumferential surface of the positioning ring.

4. The self-centering clamping assembly according to claim 1, characterized in that: The support surface of the rotating disk and the open end of the positioning ring are respectively provided with a first hinge shaft and a second hinge shaft; One end of the clamping claw is hinged to the corresponding first hinge shaft and the second hinge shaft.

5. The self-centering clamping assembly according to claim 4, characterized in that: The clamping jaw is provided with a guide notch; The second hinge shaft is arranged in the guide notch and is slidably connected to the inner wall of the guide notch.

6. The self-centering clamping assembly according to claim 1, characterized in that: Also included is a clamping rod; The axis of the clamping rod is perpendicular to the supporting surface of the turntable; One end of the clamping rod is connected to the other end of the clamping claw; The other end of the clamping rod is arranged in a direction away from the rotating disk.

7. An autocollimator eccentricity detection device, characterized in that: It comprises a positioning seat, a self-centering clamping assembly as claimed in any one of claims 1 to 6, and a multi-dimensional adjustment device and an autocollimator optical assembly arranged on the positioning seat; The self-centering clamping assembly is connected to the positioning surface of the multi-dimensional adjustment device through a base; The detection end of the autocollimator optical component and the center of the rotating disk are arranged opposite to each other.

8. The autocollimator eccentricity detection device according to claim 7, characterized in that: The autocollimator optical assembly includes a linear displacement device and a detector; The detector is connected to the movable end of the linear displacement device; The movement direction of the linear displacement device is perpendicular to the supporting surface of the turntable; The detection end of the detector and the supporting surface of the turntable are arranged opposite to each other.

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