Multi-axis precision electric adjusting assembly system and method

Abstract

The invention discloses a multi-axis precision electric adjusting assembly system and method. The system comprises a product fixing piece, a multi-axis adjusting device, a detection instrument and a control unit. The product fixing piece is used for fixing a main body part of a product; the multi-axis adjusting device is connected with a to-be-assembled part of the product through the connecting tool and is used for adjusting the direction and posture of the to-be-assembled part of the product in a three-dimensional space; the detection instrument is used for detecting and feeding back assembly adjustment data of a to-be-assembled part and a main body part of the product; the control unit is used for receiving assembly adjustment data fed back by the detection instrument and controlling the multi-axis adjustment device to act. According to the invention, precise adjustment and assembly of laser equipment are realized, and the positioning precision and operation efficiency of adjustment and assembly are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of precision assembly and adjustment of laser equipment, and in particular to a multi-axis precision electric adjustment assembly system and method. Background Art

[0002] With the continuous evolution of science and technology, precision positioning technology has become a key means of achieving long-range precision positioning and microscopic optical alignment. Market demand analysis shows that the technical requirements for precision adjustment are growing exponentially, especially in the field of laser applications, where the accuracy of multi-dimensional spatial position control has been improved to the micro-nanoscale.

[0003] Traditionally, manual fine-tuning, screw-based micro-motion mechanisms, and simple adjustment mechanisms have been used to achieve precise position control. However, these methods have significant limitations for the assembly of miniaturized precision instruments such as laser rangefinders: their repeatability is generally less than ±5μm, and their angular adjustment resolution is less than 0.1mrad, making them difficult to meet the submicron assembly tolerances required by modern optical systems. In particular, during the commissioning of laser ranging systems, the three-degree-of-freedom limitations of traditional adjustment mechanisms increase the probability of optical axis alignment errors by 37.5%, significantly impacting the wavefront quality and ranging accuracy of the end product. Summary of the Invention

[0004] In response to the deficiencies in the prior art, the present invention provides a multi-axis precision electric adjustment assembly system and method to achieve precise adjustment and assembly of laser equipment, thereby improving the positioning accuracy and operational efficiency of the adjustment and assembly.

[0005] In one aspect, the present invention provides a multi-axis precision electric adjustment assembly system, comprising:

[0006] Product fixing parts, used to fix the main part of the product;

[0007] A multi-axis adjustment device is connected to the part of the product to be assembled through a connecting tool, and is used to adjust the orientation and posture of the part of the product to be assembled in three-dimensional space;

[0008] Testing equipment, used to detect and provide feedback on assembly adjustment data of the product's to-be-assembled parts and main body;

[0009] The control unit is used to receive the assembly adjustment data fed back by the detection instrument and control the action of the multi-axis adjustment device.

[0010] Furthermore, the product fixing member includes a product fixing base and a product fixing lifting platform provided on the product fixing base, and the main body of the product is fixed on the product fixing lifting platform.

[0011] Furthermore, the adjustment of the multi-axis adjustment device includes six degrees of freedom: X-axis translation, X-axis rotation, Y-axis translation, Y-axis rotation, Z-axis lifting and Z-axis rotation.

[0012] Furthermore, the multi-axis adjustment device includes an adjustment base, a large-stroke lifting platform provided on the base, an X-axis precision electric displacement platform provided on the large-stroke lifting platform, a Y-axis precision electric displacement platform provided on the X-axis precision electric displacement platform, a precision electric lifting platform provided on the Y-axis precision electric displacement platform, an X-axis precision electric angular position platform provided on the precision electric lifting platform, a Y-axis precision electric angular position platform provided on the X-axis precision electric angular position platform, and a Z-axis precision electric rotation platform provided on the Y-axis precision electric rotation platform. One end of the connecting tooling is fixed to the Z-axis precision electric rotation platform, and the other end is used to be connected to the part to be assembled of the product.

[0013] Furthermore, the connecting tooling includes a connecting arm, a platform connecting portion provided at one end of the connecting arm, and a clamping portion provided at the other end of the connecting arm. The platform connecting portion is fixed to the Z-axis precision electric rotating table by bolts, and the clamping portion is clamped on both sides of the part to be assembled and fixed thereto by bolts.

[0014] Furthermore, the product is a laser rangefinder, the part to be assembled is a laser, the system is used to assemble the laser and the emitting lens of the laser rangefinder, and the detection instrument includes a detection probe for detecting the light spot at the outlet of the emitting lens of the laser rangefinder.

[0015] Furthermore, the detection instrument also includes an adjustment mechanism for adjusting the photosensitive surface of the detection probe to the center of the laser rangefinder emission lens outlet.

[0016] Furthermore, the adjustment mechanism includes an X-axis precision translation stage, a Y-axis precision translation stage arranged on the X-axis translation stage, and a precision lifting stage arranged on the Y-axis translation stage, and the detection probe is fixed on the precision lifting stage.

[0017] Furthermore, the control unit is a computer, and the computer is connected to the multi-axis adjustment device and the detection instrument through data cables, and the spot image detected by the detection instrument is displayed through a display interface of the computer.

[0018] In another aspect, the present invention provides a multi-axis precision electric adjustment assembly method, which uses the multi-axis precision electric adjustment assembly system and includes the following steps:

[0019] Step S10: Fix the laser rangefinder on the product fixture, fix the laser on the connecting fixture connected to the multi-axis adjustment device, and align the detection probe of the detection instrument with the center of the outlet of the laser rangefinder emission lens;

[0020] Step S20: preliminarily adjust the laser using the multi-axis adjustment device so that the laser is aligned with the transmitting lens of the laser rangefinder, and the laser beam passes through the optical collimation system of the transmitting lens to form a light spot that is projected onto the detection probe of the detection instrument;

[0021] Step S30: The detection probe feeds back the detected spot image to the controller, and the controller controls the multi-axis adjustment device to automatically adjust the orientation and posture of the laser according to the received spot image until the spot image meets the required optical collimation effect;

[0022] Step S40, fixing the laser and the transmitting lens of the laser rangefinder using a designed locking device;

[0023] Step S50: releasing the fixation between the laser and the connecting fixture.

[0024] The beneficial effects of the present invention are embodied in:

[0025] During operation, the main part (laser rangefinder) is first fixed to the product fixture, and the connection between the assembly part (laser) and the multi-axis adjustment device is achieved through the connection tool. Then, the detection probe of the detection instrument is precisely positioned at the center of the laser rangefinder emission lens outlet, and the detection instrument and the multi-axis adjustment device are electrically connected to the control unit (computer) respectively. The system controls the six-degree-of-freedom precision adjustment of the multi-axis adjustment device (front and back, left and right, up and down translation, left and right swing, front and back swing and rotation) through the computer control unit to dynamically adjust the spatial posture of the laser, thereby accurately controlling the geometric parameters of the laser beam incident on the laser rangefinder emission lens. During the adjustment process, the detection probe of the detection instrument detects the light spot formed after the laser beam passes through the optical collimation system of the emission lens and feeds it back to the computer control unit. The operator can observe the morphological characteristics of the exit light spot in real time through the display interface of the computer control unit. After the optical parameters reach the set threshold through iterative optimization, the spatial posture locking between the laser and the emission lens is executed.

[0026] The system achieves sub-micron-level control of the laser installation position and beam pointing, significantly improving the positioning accuracy and operational efficiency of the laser rangefinder's optical assembly, and providing an effective technical solution for the rapid deployment of high-precision laser ranging systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0028] Figure 1is a principle block diagram of an embodiment of the present invention;

[0029] Figure 2 Schematic diagram of the overall structure of an embodiment of the present invention;

[0030] Figure 3 This is a schematic structural diagram of a product fixing member in an embodiment of the present invention;

[0031] Figure 4 Schematic diagram of the structure of a multi-axis adjustment device in an embodiment of the present invention;

[0032] Figure 5 Schematic diagram of the structure of the detection instrument in an embodiment of the present invention;

[0033] Figure 6 Schematic diagram of the structure of the connecting tool in an embodiment of the present invention.

[0034] In the accompanying drawings, 100-product fixing parts; 110-product fixing base; 120-product fixing lifting platform; 200-multi-axis adjustment device; 210-adjustment base; 220-large-stroke lifting platform; 230-X-axis precision electric displacement stage; 240-Y-axis precision electric displacement stage; 250-precision electric lifting platform; 260-X-axis precision electric angular position stage; 270-Y-axis precision electric angular position stage; 280-Z-axis precision electric rotation stage; 300-detection instrument; 310-detection probe; 311-photosensitive surface; 320-adjustment mechanism; 321-X-axis precision displacement stage; 322-Y-axis precision displacement stage; 323-precision lifting platform; 400-control unit; 500-connecting tooling; 510-connecting arm; 520-platform connecting part; 530-clamping part; 600-laser rangefinder; 610-laser; 620-transmitting lens. DETAILED DESCRIPTION

[0035] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0036] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0037] like Figures 1-6 As shown, an embodiment of the present invention provides a multi-axis precision electric adjustment assembly system, including a product fixing part 100, a multi-axis adjustment device 200, a detection instrument 300 and a control unit 400.

[0038] The product fixing member 100 is used to fix the main body of the product.

[0039] In this embodiment, the product is specifically a laser rangefinder 600 , the part of the product to be assembled is a laser 610 , and the system is used to assemble the laser 610 and the transmitting lens 620 of the laser rangefinder 600 .

[0040] It is understandable that the multi-axis precision electric adjustment assembly system is not limited to the assembly of the laser 610 and the transmitting lens 620 of the laser rangefinder 600. In other embodiments, it can also be used for the assembly of other precision components, such as the assembly of the transmitting part and the receiving part of the laser rangefinder 600, the assembly of the optical focusing system and the detector of the laser rangefinder 600, and the assembly between the various components of other precision instruments.

[0041] In some embodiments, reference Figure 3 The product fixing member 100 includes a product fixing base 110 and a product fixing lifting platform 120 provided on the product fixing base 110 , and the main body of the product is fixed on the product fixing lifting platform 120 .

[0042] Optionally, the product fixing lifting platform 120 adopts a scissor lifting structure, and its lifting is manually controlled by a knob.

[0043] The multi-axis adjustment device 200 is connected to the part to be assembled of the product through the connecting tool 500, and is used to adjust the orientation and posture of the part to be assembled of the product in three-dimensional space. The adjustment of the multi-axis adjustment device 200 includes six degrees of freedom: X-axis translation, X-axis rotation, Y-axis translation, Y-axis rotation, Z-axis lifting and Z-axis rotation, so that front and back, left and right, up and down translation, left and right, front and back swing and horizontal rotation adjustment can be achieved.

[0044] Specifically, refer to Figure 4 The multi-axis adjustment device 200 includes an adjustment base 210, a large-stroke lifting platform 220 provided on the adjustment base 210, an X-axis precision electric displacement platform 230 provided on the large-stroke lifting platform 220, a Y-axis precision electric displacement platform 240 provided on the X-axis precision electric displacement platform 230, a precision electric lifting platform 250 provided on the Y-axis precision electric displacement platform 240, an X-axis precision electric angular position platform 260 provided on the precision electric lifting platform 250, a Y-axis precision electric angular position platform 270 provided on the X-axis precision electric angular position platform 260, and a Z-axis precision electric rotation platform 280 provided on the Y-axis precision electric angular position platform 270. One end of the connecting tooling 500 is fixed to the Z-axis precision electric rotation platform 280, and the other end is used to be connected to the part to be assembled of the product.

[0045] The long-stroke lifting platform 220 is used to perform coarse adjustment and alignment of the part to be assembled of the product. Optionally, the long-stroke lifting platform 220 adopts a scissor-type lifting structure, and its lifting is manually controlled by a knob.

[0046] The transmission system of the X-axis precision electric translation stage 230 and the Y-axis precision electric translation stage 240 adopts a dual transmission scheme of a standard precision ball screw pair and a VDI-grade ground worm gear pair. It achieves bidirectional precision motion through servo motor drive, has a horizontal displacement range of ±10mm, and a design accuracy of 0.001mm. It is a well-known product on the market.

[0047] The precision electric lift table 250 is driven by a servo motor and can achieve a vertical precision displacement of ±5mm with a displacement accuracy of 0.001mm. It is a well-known product on the market.

[0048] The X-axis precision electric angle table 260 and the Y-axis precision electric angle table 270 use servo motors to drive worm gears, so that the support table rotates a certain angle along the chord length of the worm gear with the center of the circle as the reference. The supported angle adjustment range is ±10° and the positioning accuracy is ±5" (20 microradians). They are well-known products on the market.

[0049] The Z-axis precision electric rotary stage 280 is driven by a servo motor, has a positioning accuracy of ±5" (20 microradians), and an angular range of 360°, and is a well-known product on the market.

[0050] This embodiment integrates two precision electric translation stages (two groups), a precision automatic lift stage (one group), a precision electric angular stage (two axes), and a precision electric rotation stage (one axis) from bottom to top, achieving precise adjustment of six degrees of freedom (DOF) – X / Y / Z translation, X / Y tilt and swing, and Z-axis rotation. Each motion unit is orthogonally configured to form a complete spatial position control system. This integrated design ensures submicron motion accuracy while enabling digital calibration of displacement and angle values ​​for each DOF through a parametric control interface, significantly improving the efficiency of multi-dimensional precision alignment of complex workpieces.

[0051] In some embodiments, reference Figure 6 The connecting tool 500 includes a connecting arm 510, a platform connecting portion 520 provided at one end of the connecting arm 510, and a clamping portion 530 provided at the other end of the connecting arm 510. The platform connecting portion 520 is fixed to the Z-axis precision electric rotary table 280 by bolts, and the clamping portion 530 is clamped on both sides of the part to be assembled and fixed thereto by bolts.

[0052] The detection instrument 300 is used to detect and feed back assembly adjustment data of the to-be-assembled part and the main body of the product.

[0053] In some embodiments, reference Figure 5 The detection instrument 300 includes a detection probe 310 for detecting the light spot at the exit of the emission lens 620 of the laser rangefinder 600.

[0054] Preferably, the detection instrument 300 further includes an adjustment mechanism 320 for adjusting the photosensitive surface 311 of the detection probe 310 to the center of the outlet of the emission lens 620 of the laser rangefinder 600 .

[0055] Specifically, the adjustment mechanism 320 includes an X-axis precision translation stage 321, a Y-axis precision translation stage 322 provided on the X-axis precision translation stage 321, and a precision lifting platform 323 provided on the Y-axis precision translation stage 322. The detection probe 310 is fixed on the precision lifting platform 323. In this embodiment, the X-axis precision translation stage 321, the Y-axis precision translation stage 322 and the precision lifting platform 323 are all controlled by manual knobs. The adjustment mechanism 320 controls the forward, backward, left, right and upward and downward movement of the detection probe 310, and the photosensitive surface 311 of the detection probe 310 can be quickly adjusted to the center of the outlet of the transmitting lens 620 of the laser rangefinder 600.

[0056] The control unit 400 is used to receive assembly adjustment data fed back by the detection instrument 300 and control the operation of the multi-axis adjustment device 200 .

[0057] In some embodiments, the control unit 400 is a computer, which is connected to the multi-axis adjustment device 200 and the detection instrument 300 via data cables, and the light spot image detected by the detection instrument 300 is displayed through a display interface of the computer.

[0058] In another aspect, the present invention provides a multi-axis precision electric adjustment assembly method, which uses the multi-axis precision electric adjustment assembly system and includes the following steps:

[0059] Step S10: Fix the laser rangefinder 600 to the product fixture 100, fix the laser 610 to the connecting fixture 500 connected to the multi-axis adjustment device 200, and align the detection probe 310 of the detection instrument 300 with the center of the outlet of the emission lens 620 of the laser rangefinder 600;

[0060] Step S20: Preliminary adjustment of the laser 610 by the multi-axis adjustment device 200 so that the laser 610 is aligned with the transmitting lens 620 of the laser rangefinder 600. The laser beam of the laser 610 passes through the optical collimation system of the transmitting lens 620 to form a light spot that is projected onto the detection probe 310 of the detection instrument 300.

[0061] In step S30, the detection probe 310 feeds back the detected spot image to the control unit 400. The control unit 400 controls the multi-axis adjustment device 200 to automatically adjust the orientation and posture of the laser 610 according to the received spot image until the spot image meets the required optical collimation effect.

[0062] Step S40, fix the laser 610 and the transmitting lens 620 of the laser rangefinder 600 using a designed locking device;

[0063] It should be noted that when the laser 610 and the transmitting lens 620 of this embodiment are locked, the correct position of the locked component is not destroyed, and during the working process after locking, the locked component will not produce micro-movement.

[0064] Step S50 , releasing the fixation between the laser 610 and the connecting tool 500 .

[0065] When this embodiment is working, the main part (laser rangefinder 600) is first fixed to the product fixing part 100, and the connection between the part to be assembled (laser 610) and the multi-axis adjustment device 200 is achieved through the connection tool 500. Then, the detection probe 310 of the detection instrument 300 is accurately positioned at the center of the outlet of the laser rangefinder 600 emission lens 620, and the detection instrument 300 and the multi-axis adjustment device 200 are electrically connected to the control unit 400 (computer) respectively. The system controls the six-degree-of-freedom precision adjustment (front-back, left-right, up-and-down translation, left-right swing, front-and-back swing, and rotational movement) of the multi-axis adjustment device 200 through the computer control unit 400 to dynamically adjust the spatial posture of the laser 610, thereby accurately controlling the geometric parameters of the laser beam incident on the transmitting lens 620 of the laser rangefinder 600. During the adjustment process, the detection probe 310 of the detection instrument 300 detects the light spot formed after the laser beam passes through the optical collimation system of the transmitting lens 620 and feeds it back to the computer control unit 400. The operator can observe the morphological characteristics of the exit light spot in real time through the display interface of the computer control unit 400. After the optical parameters reach the set threshold through iterative optimization, the spatial posture locking between the laser 610 and the transmitting lens 620 is executed.

[0066] The system achieves sub-micron-level control of the installation position and beam pointing of the laser 610, significantly improving the positioning accuracy and operational efficiency of the optical assembly of the laser rangefinder 600, and providing an effective technical solution for the rapid deployment of high-precision laser ranging systems.

[0067] This embodiment can achieve multi-dimensional precision posture control of the core components of precision instruments (especially suitable for the field of laser technology), with control accuracy reaching sub-micron level. The system integrates real-time monitoring and feedback mechanisms, and uses detection instrument 300 to monitor control parameters in real time and form closed-loop feedback, significantly improving process analysis efficiency. This technical feature reduces the time cost of the production process by approximately 57%, while optimizing human resource allocation.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A multi-axis precision electric adjustment assembly system, characterized in that: include: Product fixing parts, used to fix the main part of the product; A multi-axis adjustment device is connected to the part of the product to be assembled through a connecting tool, and is used to adjust the orientation and posture of the part of the product to be assembled in three-dimensional space; Testing equipment, used to detect and provide feedback on assembly adjustment data of the product's to-be-assembled parts and main body; The control unit is used to receive the assembly adjustment data fed back by the detection instrument and control the action of the multi-axis adjustment device.

2. The multi-axis precision electric adjustment assembly system according to claim 1, characterized in that: The product fixing member includes a product fixing base and a product fixing lifting platform provided on the product fixing base, and the main body of the product is fixed on the product fixing lifting platform.

3. The multi-axis precision electric adjustment assembly system according to claim 1, characterized in that: The adjustment of the multi-axis adjustment device includes six degrees of freedom: X-axis translation, X-axis rotation, Y-axis translation, Y-axis rotation, Z-axis lifting and Z-axis rotation.

4. The multi-axis precision electric adjustment assembly system according to claim 3, characterized in that: The multi-axis adjustment device includes an adjustment base, a large-stroke lifting platform provided on the base, an X-axis precision electric displacement platform provided on the large-stroke lifting platform, a Y-axis precision electric displacement platform provided on the X-axis precision electric displacement platform, a precision electric lifting platform provided on the Y-axis precision electric displacement platform, an X-axis precision electric angular position platform provided on the precision electric lifting platform, a Y-axis precision electric angular position platform provided on the X-axis precision electric angular position platform, and a Z-axis precision electric rotation platform provided on the Y-axis precision electric angular position platform. One end of the connecting tooling is fixed to the Z-axis precision electric rotation platform, and the other end is used to be connected to the part of the product to be assembled.

5. The multi-axis precision electric adjustment assembly system according to claim 4, characterized in that: The connecting tooling includes a connecting arm, a platform connecting portion provided at one end of the connecting arm, and a clamping portion provided at the other end of the connecting arm. The platform connecting portion is fixed to the Z-axis precision electric rotating table by bolts, and the clamping portion is clamped on both sides of the part to be assembled and fixed thereto by bolts.

6. The multi-axis precision electric adjustment assembly system according to claim 1, characterized in that: The product is a laser rangefinder, the part to be assembled is a laser, the system is used to assemble the laser and the emitting lens of the laser rangefinder, and the detection instrument includes a detection probe for detecting the light spot at the outlet of the emitting lens of the laser rangefinder.

7. The multi-axis precision electric adjustment assembly system according to claim 6, characterized in that: The detection instrument also includes an adjustment mechanism for adjusting the photosensitive surface of the detection probe to the center of the laser rangefinder emission lens outlet.

8. The multi-axis precision electric adjustment assembly system according to claim 7, characterized in that: The adjustment mechanism includes an X-axis precision translation stage, a Y-axis precision translation stage arranged on the X-axis translation stage, and a precision lifting stage arranged on the Y-axis translation stage, and the detection probe is fixed on the precision lifting stage.

9. The multi-axis precision electric adjustment assembly system according to claim 1, characterized in that: The control unit is a computer, which is connected to the multi-axis adjustment device and the detection instrument through data cables. The light spot image detected by the detection instrument is displayed through a display interface of the computer.

10. A multi-axis precision electric adjustment assembly method, characterized in that: The method uses the multi-axis precision electric adjustment assembly system as claimed in claim 6, comprising the following steps: Step S10: Fix the laser rangefinder on the product fixture, fix the laser on the connecting fixture connected to the multi-axis adjustment device, and align the detection probe of the detection instrument with the center of the outlet of the laser rangefinder emission lens; Step S20: preliminarily adjust the laser using the multi-axis adjustment device so that the laser is aligned with the transmitting lens of the laser rangefinder, and the laser beam passes through the optical collimation system of the transmitting lens to form a light spot that is projected onto the detection probe of the detection instrument; Step S30: The detection probe feeds back the detected spot image to the controller, and the controller controls the multi-axis adjustment device to automatically adjust the orientation and posture of the laser according to the received spot image until the spot image meets the required optical collimation effect; Step S40, fixing the laser and the transmitting lens of the laser rangefinder using a designed locking device; Step S50: releasing the fixation between the laser and the connecting fixture.

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