Three-dimensional optical precision measuring device

Abstract

The utility model discloses a three-dimensional optical precision measuring device, which comprises a base; the top of the base is provided with columns; a first lead screw sliding block module and a second lead screw sliding block module are sequentially arranged on the front side of the stand column from bottom to top. An objective table is arranged on the first screw rod sliding block module; a wing-shaped plate is arranged on the second screw rod sliding block module; a Z-axis fine adjustment mechanism and two multi-direction fine adjustment mechanisms are arranged on the front side of the wing-shaped plate; the Z-axis fine adjustment mechanism is arranged in the middle of the wing-shaped plate; a light source is arranged on the Z-axis fine adjustment mechanism; the two multi-direction fine adjustment mechanisms are symmetrically arranged on the left side and the right side of the Z-axis fine adjustment mechanism. And each multi-direction fine adjustment mechanism is provided with a camera. According to the utility model, by adopting integrated design and assembly, the structure is firm and reliable, multi-degree-of-freedom adjustment can be realized, measurement is convenient, the calibration frequency can be effectively reduced, and the measurement precision is improved.

Description

[0001] (This application claims priority to application number 202421592772.4, filed on July 5, 2024.) Technical Field

[0002] This utility model relates to the field of measuring device technology, and more specifically to a three-dimensional optical precision measuring device. Background Technology

[0003] With the rapid development of image processing technology, image processing techniques can help people solve a series of problems that traditional methods cannot solve. Traditional contact measurement is prone to causing damage to the surface of the object being measured, and the measurement points are relatively limited, which is time-consuming and labor-intensive. To address the above problems, three-dimensional optical measurement technology can use cameras, light sources and a series of image processing operations to quickly reconstruct the contour information of objects without contact or loss, and use point cloud information for measurement, effectively solving the problems that occur in the traditional measurement process.

[0004] While existing monocular or multi-view measuring devices can achieve multi-degree-of-freedom adjustment to a certain extent, they still have the following problems: 1. Insufficient degrees of freedom; 2. Unstable position of the camera and light source, which requires frequent system calibration due to position changes; all of the above problems will affect the measurement accuracy of the measuring device.

[0005] Therefore, how to provide a three-dimensional optical precision measurement device that can improve measurement accuracy is one of the technical problems that urgently need to be solved in this field. Utility Model Content

[0006] In view of this, the present invention provides a three-dimensional optical precision measurement device, the purpose of which is to solve the problems existing in the prior art.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A three-dimensional optical precision measurement device includes: a base; a column at the top of the base; a first lead screw and slider module and a second lead screw and slider module arranged sequentially from bottom to top on the front side of the column; a stage on the first lead screw and slider module; an airfoil on the second lead screw and slider module; a Z-axis fine-tuning mechanism and two multi-directional fine-tuning mechanisms on the front side of the airfoil; the Z-axis fine-tuning mechanism is located in the middle of the airfoil; a light source is provided on the Z-axis fine-tuning mechanism; the two multi-directional fine-tuning mechanisms are symmetrically arranged on the left and right sides of the Z-axis fine-tuning mechanism; and a camera is provided on each of the multi-directional fine-tuning mechanisms.

[0009] Preferably, the Z-axis fine-tuning mechanism includes a first displacement adjustment stage; the light source is disposed on the first displacement adjustment stage.

[0010] Preferably, each of the multi-directional fine-tuning mechanisms includes a second displacement adjustment platform, an L-shaped adapter block, and an adjustment disk; the second displacement adjustment platform is disposed on the front side of the airfoil; the top of the L-shaped adapter block has a first oblong hole; the second displacement adjustment platform has a first threaded hole corresponding to the first oblong hole; a first bolt is threaded into the first threaded hole; the adjustment disk is rotatably connected to the front side of the L-shaped adapter block; the adjustment disk has a second oblong hole; the L-shaped adapter block has a second threaded hole adapted to the second oblong hole; a second bolt is threaded into the second threaded hole; the camera is disposed on the front side of the adjustment disk.

[0011] Preferably, the L-shaped adapter block has a rotating shaft on its front side; the adjusting disc is rotatably connected to the rotating shaft.

[0012] Preferably, the base has handles on both the left and right sides of its top.

[0013] Preferably, the first lead screw and slider module includes a first base plate, a first end plate, a first linear guide rail, a first lead screw, a first lead screw pair, a first slider, a stage adapter plate, a first helical gear, a second helical gear, a drive shaft, a bracket, and a first handle; the first base plate is fixedly installed on the front side of the column; two first end plates are provided, respectively installed at the upper and lower ends of the first base plate; the first lead screw is installed on the first end plate through bearings, the first lead screw pair is screwed onto the first lead screw, and the first helical gear is fixedly installed at the bottom end of the first lead screw; two first linear guide rails are provided, both fixedly installed on the first base plate, both first linear guide rails are arranged parallel to the first lead screw, and a first slider is slidably installed on each first linear guide rail; the first slider and the first lead screw pair are both installed on the stage adapter plate through bolts; the stage adapter plate is fixedly connected to one side of the stage through bolts; two brackets are provided, and the two brackets are fixedly connected to the base or column; the drive shaft is installed on the bracket through bearings, and the first handle is fixedly installed on one end of the drive shaft; the second helical gear is fixedly installed on the drive shaft, and the second helical gear meshes with the first helical gear.

[0014] Preferably, the second lead screw and slider module includes a second base plate, a second end plate, a second linear guide rail, a second lead screw, a second lead screw pair, a second slider, and a second handle; the second base plate is fixedly installed on the front side of the column; two second end plates are provided, respectively installed at the upper and lower ends of the second base plate; the second lead screw is installed on the second end plate through bearings, the second lead screw pair is screwed onto the second lead screw, and the second handle is fixedly installed on the top end of the second lead screw; two second linear guide rails are provided, both fixedly installed on the second base plate, both second linear guide rails are arranged parallel to the second lead screw, and a second slider is slidably installed on each second linear guide rail; the second slider and the second lead screw pair are both installed on the airfoil plate by bolts.

[0015] Preferably, a guide rail clamp is provided on the first linear guide rail; the guide rail clamp is fixedly installed on the platform adapter plate; a handle screw is screwed onto the second end plate at the top.

[0016] Compared with the prior art, the present invention has achieved the following technical effects: The present invention adopts an integrated design and assembly, which makes the structure robust and reliable. At the same time, it can realize multi-degree-of-freedom adjustment, which not only facilitates measurement, but also effectively reduces the calibration frequency and improves the measurement accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a three-dimensional optical precision measuring device according to the present invention;

[0018] Figure 2 This is a schematic diagram of the L-shaped adapter block;

[0019] Figure 3 This is a schematic diagram of the regulating disc;

[0020] Figure 4 This is a schematic diagram of the structure of the first lead screw and slider module;

[0021] Figure 5 This is a schematic diagram of the structure of the second lead screw slider module;

[0022] In the diagram: 1. Base; 2. Column; 3. First lead screw and slider module; 4. Second lead screw and slider module; 5. Stage; 6. Airfoil plate; 7. Light source; 8. Camera; 9. First displacement adjustment stage; 10. Second displacement adjustment stage; 11. L-shaped adapter block; 12. Adjustment disc; 13. First oblong hole; 14. Second oblong hole; 15. Handle; 21. Bracket; 22. Drive shaft; 23. Second helical gear; 24. First hand... 31. Handle; 32. First base plate; 33. First end plate; 34. First linear guide rail; 35. First lead screw; 36. First slider; 37. Guide rail clamp; 38. First helical gear; 39. Platform adapter plate; 41. Second base plate; 42. Second end plate; 43. Second linear guide rail; 44. Second lead screw; 45. Second lead screw pair; 46. Second slider; 47. Second handle; 48. Handle screw. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example

[0025] Reference Figure 1-3As shown, this utility model discloses a three-dimensional optical precision measurement device, including: a base 1; a column 2 is provided on the top of the base 1; a first lead screw and slider module 3 and a second lead screw and slider module 4 are arranged sequentially from bottom to top on the front side of the column 2; a stage 5 is provided on the first lead screw and slider module 3, and the stage 5 can be adjusted in a wide range along the Z-axis direction of the column 2 through the first lead screw and slider module; an airfoil 6 is provided on the second lead screw and slider module 4; a Z-axis fine adjustment mechanism and two multi-directional fine adjustment mechanisms are provided on the front side of the airfoil 6, and the airfoil 6 can be adjusted in a wide range along the Z-axis direction of the column 2 through the second lead screw and slider module, thereby driving the Z-axis fine adjustment mechanism and the two multi-directional fine adjustment mechanisms to perform a wide range of adjustment in the Z-axis direction; the Z-axis fine adjustment mechanism is located in the middle of the airfoil 6; a light source 7 is provided on the Z-axis fine adjustment mechanism, so that the position of the light source 7 can be adjusted in the Z-axis direction. The device features two multi-directional fine-tuning mechanisms symmetrically positioned on either side of the Z-axis fine-tuning mechanism. Each mechanism is equipped with a camera 8, allowing for fine-tuning of the camera's position in multiple directions. During operation, the first lead screw and slider module 3 drives the stage 5 to adjust extensively along the Z-axis, while the second lead screw and slider module 4 drives the airfoil 6 to adjust extensively along the Z-axis. This, in turn, drives the Z-axis fine-tuning mechanism and the two multi-directional fine-tuning mechanisms to adjust extensively along the Z-axis. The Z-axis fine-tuning mechanism allows for fine-tuning of the light source 7 along the Z-axis, and the multi-directional fine-tuning mechanisms allow for fine-tuning of the camera in multiple directions. This enables the camera's object distance focus to converge at the center of the stage, facilitating precise three-dimensional optical measurement of the object. The device allows for greater freedom of adjustment of the camera and light source, and its operation is simple, convenient, and highly accurate.

[0026] In this embodiment, the Z-axis fine-tuning mechanism includes a first displacement adjustment stage 9; the light source 7 is disposed on the first displacement adjustment stage 9, and the light source is driven by the first displacement adjustment stage to perform fine-tuning in the Z-axis direction.

[0027] In this embodiment, each multi-directional fine-tuning mechanism includes a second displacement adjusting platform 10, an L-shaped adapter block 11, and an adjusting disk 12; the second displacement adjusting platform 10 is disposed on the front side of the airfoil plate 6; the top of the L-shaped adapter block 11 has a first oblong hole 13; the second displacement adjusting platform 10 has a first threaded hole corresponding to the first oblong hole 13; a first bolt is threaded into the first threaded hole; the adjusting disk 12 is rotatably connected to the front side of the L-shaped adapter block 11; the adjusting disk 12 has a second oblong hole 14; the L-shaped adapter block 11 has a second threaded hole adapted to the second oblong hole 14; a second bolt is threaded into the second threaded hole; and so on. The camera 8 is positioned in front of the adjustment disk 12. In use, the L-shaped adapter block is moved axially for fine-tuning via the second displacement adjustment platform 10. After loosening the first bolt and moving the L-shaped adapter block 11 to the appropriate position along the normal plane, the first bolt is tightened. This allows the L-shaped adapter block 11 to move and fine-tune along the normal plane, thereby enabling the adjustment disk 12 to move and fine-tune along the normal plane. After loosening the second bolt and rotating the adjustment disk 12 to the appropriate position, the second bolt is tightened. This allows the adjustment disk 12 to rotate and fine-tune in the circumferential direction. Thus, the camera 8 can move along the normal plane, rotate circumferentially, and move axially, achieving fine-tuning in the normal plane, circumferential direction, and axial direction.

[0028] The above technical solution is robust and reliable through integrated design and assembly. The use of multi-degree-of-freedom adjustment in the structural adjustment part not only facilitates measurement but also effectively reduces the calibration frequency and improves measurement accuracy.

[0029] In this embodiment, the L-shaped adapter block 11 has a rotating shaft on its front side; the adjusting disk 12 is rotatably connected to the rotating shaft.

[0030] In this embodiment, handles 15 are provided on both the left and right sides of the top of the base 1.

[0031] In this embodiment, the first lead screw and slider module 3 includes a first base plate 31, a first end plate 32, a first linear guide rail 33, a first lead screw 34, a first lead screw pair 35, a first slider 36, a platform adapter plate 39, a first helical gear 38, a second helical gear 23, a drive shaft 22, a bracket 21, and a first handle 24; the first base plate 31 is fixedly installed on the front side of the column 2; two first end plates 32 are provided, respectively installed at the upper and lower ends of the first base plate 31; the first lead screw 34 is installed on the first end plate 32 through bearings, the first lead screw pair 35 is screwed onto the first lead screw 34, and the first helical gear 38 is fixedly installed at the bottom end of the first lead screw 34; the first linear guide rail 33 is provided with... There are two first linear guides 33, both fixedly installed on the first base plate 31. Both first linear guides 33 are arranged parallel to the first lead screw 34. Each first linear guide 33 has a first slider 36 slidably installed on it. The first slider 36 and the first lead screw 35 are both bolted to the platform adapter plate 39. The platform adapter plate 39 is fixedly connected to one side of the platform 5 by bolts. There are two brackets 21, which are fixedly connected to the base 1 or the column 2. The drive shaft 22 is mounted on the bracket 21 through bearings. The first handle 24 is fixedly installed on one end of the shaft. The second helical gear 23 is fixedly installed on the drive shaft 22 and meshes with the first helical gear 38. When in use, hold the first handle 24 and rotate it. The first handle 24 drives the drive shaft 22 to rotate. The drive shaft 22 drives the first lead screw 34 to rotate through the second helical gear 23 and the first helical gear 38, thereby enabling the first lead screw pair 35, the first slider 36, the stage adapter plate 39 and the stage 5 to be adjusted in a wide range along the Z-axis direction.

[0032] The second lead screw and slider module 4 includes a second base plate 41, a second end plate 42, a second linear guide rail 43, a second lead screw 44, a second lead screw pair 45, a second slider 46, and a second handle 47. The second base plate 41 is fixedly installed on the front side of the column 2. Two second end plates 42 are provided and are respectively installed at the upper and lower ends of the second base plate 41. The second lead screw 44 is installed on the second end plate 42 through bearings, the second lead screw pair 45 is screwed onto the second lead screw 44, and the second handle 47 is fixedly installed on the top end of the second lead screw 44. Two second linear guide rails 43 are provided and are both fixedly installed on the second base plate 41. Both second linear guide rails 43 are arranged parallel to the second lead screw 44, and a second slider 46 is slidably arranged on each second linear guide rail 43. The second slider 46 and the second lead screw pair 45 are both installed on the airfoil plate 6 by bolts. When in use, hold the second handle 47 and rotate it. The second handle 47 drives the first lead screw 34 to rotate, thereby enabling the second lead screw pair 45, the second slider 46 and the airfoil plate 6 to be adjusted in a wide range along the Z-axis direction.

[0033] In another embodiment, a guide rail clamp 37 is provided on the first linear guide rail 33, and the guide rail clamp 37 is fixedly mounted on the platform adapter plate 39. The guide rail clamp 37 achieves stable clamping and precise positioning. A handle screw 48 is screwed onto the second end plate 42 located at the top. By manually tightening the handle screw 48, the second lead screw 44 can be locked to prevent it from rotating, thereby achieving precise positioning.

[0034] In this embodiment, the first displacement adjustment stage 9 and the second displacement adjustment stage 10 are both common displacement adjustment stages in the prior art (such as Ximu LGX series displacement slides and Misumi XCRS series manual slides), so their specific structures will not be described in detail.

[0035] This device places the light source in the center, which utilizes a programmable optical projection module. Two cameras with telecentric lenses are symmetrically distributed on either side, with a carefully chosen angle to ensure that the two cameras have overlapping areas within the depth of field, while also possessing their own independent sections. The programmable optical projection module can project an easily identifiable image onto the overlapping area and use the corresponding point information to quickly calibrate each camera individually. It can also calculate the relative position between the two cameras. Furthermore, the independent field of view of each camera expands the measurement range. By sharing a single light source, the device can be used separately as two monocular systems, or as a single unit as a binocular system for measurement using binocular principles.

[0036] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A three-dimensional optical precision measuring device, characterized by, The utility model relates to a kind of micro-adjustment mechanism for microscope, including: Base (1);The base (1) top is equipped with stand (2);The stand (2) front side is equipped with first screw rod slider module (3) and second screw rod slider module (4) in turn from bottom to top;The first screw rod slider module (3) is equipped with object table (5) on;Second screw rod slider module (4) is equipped with airfoil plate (6) on;The airfoil plate (6) front side is equipped with Z-axis fine adjustment mechanism and two multidirectional fine adjustment mechanism;The Z-axis fine adjustment mechanism is set in the middle position of the airfoil plate (6);Z-axis fine adjustment mechanism is equipped with light source (7) on;Two the multidirectional fine adjustment mechanism is symmetrically set in the left and right sides of the Z-axis fine adjustment mechanism;Each the multidirectional fine adjustment mechanism is equipped with camera (8) on.

2. The three-dimensional optical precision measuring device according to claim 1, wherein The Z-axis fine adjustment mechanism includes first displacement adjustment platform (9);The light source (7) is set on the first displacement adjustment platform (9).

3. The three-dimensional optical precision measuring apparatus according to claim 1, wherein Each the multidirectional fine adjustment mechanism includes second displacement adjustment platform (10), L-shaped adapter block (11) and adjusting disc (12);The second displacement adjustment platform (10) is set on the airfoil plate (6) front side;The L-shaped adapter block (11) top is equipped with first waist hole (13);The second displacement adjustment platform (10) is equipped with the first screw hole corresponding with the first waist hole (13) on;First bolt is screw-threadedly connected in the first screw hole;The adjusting disc (12) is rotatably connected on the L-shaped adapter block (11) front side;The adjusting disc (12) is equipped with second waist hole (14) on;The L-shaped adapter block (11) is equipped with the second screw hole compatible with the second waist hole (14) on;Second bolt is screw-threadedly connected in the second screw hole;The camera (8) is set on the adjusting disc (12) front side.

4. The three-dimensional optical precision measuring apparatus according to claim 3, wherein The L-shaped adapter block (11) front side is equipped with rotating shaft;The adjusting disc (12) is rotatably connected on the rotating shaft.

5. The three-dimensional optical precision measuring apparatus according to claim 1, wherein The base (1) top left and right sides are each equipped with handle (15).

6. The three-dimensional optical precision measuring apparatus according to claim 1, wherein The first screw block module (3) comprises a first bottom plate (31), a first end plate (32), a first linear guide rail (33), a first screw rod (34), a first screw pair (35), a first sliding block (36), a stage adapter plate (39), a first helical gear (38), a second helical gear (23), a driving shaft (22), a bracket (21) and a first handle (24); the first bottom plate (31) is fixedly installed on the front side of the column (2); the first end plate (32) is provided with two, which are installed on the upper and lower ends of the first bottom plate (31) respectively; the first screw rod (34) is installed on the first end plate (32) through a bearing, the first screw pair (35) is screwed on the first screw rod (34), and the first helical gear (38) is fixedly installed on the bottom end of the first screw rod (34); the first linear guide rail (33) is provided with two, which are fixedly installed on the first bottom plate (31), and the two first linear guide rails (33) are arranged in parallel with the first screw rod (34), and the first sliding block (36) is slidably arranged on each first linear guide rail (33); the first sliding block (36) and the first screw pair (35) are both installed on the stage adapter plate (39) through bolts; one side of the stage adapter plate (39) and the stage (5) are fixedly connected through bolts; the bracket (21) is provided with two, which are fixedly connected on the base (1) or the column (2); the driving shaft (22) is installed on the bracket (21) through a bearing, and the first handle (24) is fixedly installed on one end of the rotating shaft; the second helical gear (23) is fixedly installed on the driving shaft (22), and the second helical gear (23) is engaged with the first helical gear (38).

7. The three-dimensional optical precision measuring apparatus according to claim 6, wherein The second screw block module (4) comprises a second bottom plate (41), a second end plate (42), a second linear guide rail (43), a second screw rod (44), a second screw pair (45), a second sliding block (46) and a second handle (47); the second bottom plate (41) is fixedly installed on the front side of the column (2); the second end plate (42) is provided with two, which are installed on the upper and lower ends of the second bottom plate (41) respectively; the second screw rod (44) is installed on the second end plate (42) through a bearing, the second screw pair (45) is screwed on the second screw rod (44), and the second handle (47) is fixedly installed on the top end of the second screw rod (44); the second linear guide rail (43) is provided with two, which are fixedly installed on the second bottom plate (41), and the two second linear guide rails (43) are arranged in parallel with the second screw rod (44), and the second sliding block (46) is slidably arranged on each second linear guide rail (43); the second sliding block (46) and the second screw pair (45) are both installed on the airfoil plate (6) through bolts.

8. The three-dimensional optical precision measuring apparatus according to claim 7, wherein The first linear guide rail (33) is matched with a guide rail clamp (37); the guide rail clamp (37) is fixedly installed on the stage adapter plate (39); the top end of the second end plate (42) is screwed with a handle screw (48).

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