3D curved surface data acquisition device

Abstract

The utility model relates to a 3D curved surface data acquisition device. The device comprises a first linear motion platform; the supporting seat is arranged on the first linear motion platform in a sliding manner; the rotating platform is rotationally arranged on the supporting seat, a product with a 3D curved surface is arranged on the rotating platform, and the first linear motion platform drives the product to move to a detection position; the motion extension direction of the second linear motion platform is different from that of the first linear motion platform; the sliding support is arranged on the second linear motion platform in a sliding mode, and the laser is obliquely arranged on the sliding support; and the control unit is used for controlling the first linear motion platform, the rotating platform and the second linear motion platform to move, so that the laser obtains 3D curved surface data of the product. According to the utility model, the 3D curved surface product is automatically moved, the curved surface data is comprehensively acquired by laser, and the high-precision detection of the 3D curved surface is assisted.

Description

Technical Field

[0001] The utility model relates to the technical field of product detection, in particular to a 3D curved surface data acquisition device. Background Art

[0002] 3D surfaces are widely used in products. Due to the special nature of their surfaces, high-precision equipment is often required for data collection and subsequent testing. At the same time, manual intervention is required to position the product, resulting in a lot of time and manpower consumption. The results are also easily affected by the operator's skills and may lead to deviations.

[0003] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a 3D surface data acquisition device, which automatically moves the 3D surface product and uses laser to comprehensively collect surface data to assist in achieving high-precision detection of 3D surfaces.

[0005] In order to solve the above technical problems, the present invention proposes the following technical solutions:

[0006] The present application relates to a 3D surface data acquisition device, comprising:

[0007] The first linear motion platform;

[0008] A support seat, which is slidably placed on the first linear motion platform;

[0009] A rotating platform is rotatably placed on the support seat, and a product with a 3D curved surface is placed on the rotating platform, and the first linear motion platform drives the product to move to a detection position;

[0010] a second linear motion platform, the motion extension direction of which is different from the motion extension direction of the first linear motion platform;

[0011] A sliding bracket is slidably placed on the second linear motion platform, and the laser is tiltedly placed on the sliding bracket;

[0012] A control unit is used to connect to the first linear motion platform, the rotation platform and the second linear motion platform respectively, and to control the movement of the first linear motion platform, the rotation platform and the second linear motion platform so that the laser can obtain the 3D surface data of the product.

[0013] In some embodiments of the present application, the data acquisition device further includes:

[0014] A clamp is located on top of the rotating platform and is used to stabilize the product.

[0015] In some embodiments of the present application, the clamp comprises:

[0016] A main body portion, which is fixed to the top of the rotating platform, and has a protruding bearing portion in the middle of the main body portion, the bearing portion is used to bear the product;

[0017] The adsorption portion is used to adsorb the product when the product is placed on the carrying portion.

[0018] In some embodiments of the present application, the adsorption portion is a negative pressure cavity formed in the carrying portion, and an opening communicating with the negative pressure cavity is formed on a surface of the carrying portion for carrying the product.

[0019] In some embodiments of the present application, the clamp further includes: a limiting portion, which is placed on the main body and located in the circumference of the bearing portion.

[0020] In some embodiments of the present application, the second linear motion platform includes:

[0021] seat body;

[0022] A lead screw module is placed on the base;

[0023] The first guide rail and the second guide rail are placed on the base body and are respectively located on both sides of the screw module, and the extension direction of the first guide rail and the second guide rail are parallel to the extension direction of the screw of the screw module. The first guide rail and the second guide rail are both provided with sliders, and the sliding bracket is respectively connected to the slider of the first guide rail, the slider of the second guide rail and the nut of the screw.

[0024] In some embodiments of the present application, the movement extension direction of the first linear motion platform and the movement extension direction of the second linear motion platform are perpendicular.

[0025] In some embodiments of the present application, the sliding bracket includes:

[0026] a bottom support frame, which is placed on the second linear motion platform;

[0027] A top supporting frame is located above the bottom supporting frame, and a side of the top supporting frame for mounting the laser is inclined.

[0028] In some embodiments of the present application, the sliding bracket further includes:

[0029] A mounting plate is mounted on the inclined side of the top support frame. A plurality of first elongated mounting holes are provided on the mounting plate, and screws are passed through the first elongated mounting holes to be mounted on the laser.

[0030] In some embodiments of the present application, the length direction of the projection of the first elongated mounting hole onto the second linear motion platform is perpendicular to the movement extension direction of the second linear motion platform;

[0031] A plurality of second elongated mounting holes are provided on one inclined side of the top support frame, and an assembly hole corresponding to each second elongated mounting hole is provided on the mounting plate. The opening direction of the second elongated mounting hole is perpendicular to the opening direction of the first elongated mounting hole, and the screws pass through the second elongated mounting hole and the assembly hole.

[0032] Compared with the prior art, the 3D surface data acquisition device provided by this application has the following advantages and beneficial effects:

[0033] (1) The first linear motion platform is used to move the product to the detection position. When collecting data on the 3D surface, the rotating platform, the first linear motion platform, and the second linear motion platform are controlled to rotate in coordination, so that the measured surface can be scanned by the laser to obtain laser data. Since the rotating platform rotates to obtain the data of the 3D surface, the laser data is not only highly accurate, but also the surface data is obtained by rotating, and the data overlap range is large, so that high-precision surface data can be obtained, which is conducive to improving the accuracy of surface detection;

[0034] (2) The rotating platform, the first linear motion platform, and the second linear motion platform rotate automatically in coordination without manual intervention, thereby reducing the amount of manual work and avoiding accuracy deviation caused by manual skills.

[0035] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 This is a three-dimensional diagram of the 3D surface data acquisition device proposed by the present invention;

[0038] Figure 2This is an assembly diagram of the first linear motion platform and the rotating platform thereon in the 3D curved surface data acquisition device proposed in the present invention;

[0039] Figure 3 This is a structural diagram of the second linear motion platform in the 3D surface data acquisition device proposed by the present invention;

[0040] Figure 4 The assembly of the second linear motion platform and the sliding bracket on it in the 3D surface data acquisition device proposed by the utility model Figure 1 ;

[0041] Figure 5 This is a structural diagram of the laser in the 3D surface data acquisition device proposed in the utility model;

[0042] Figure 6 The assembly of the second linear motion platform and the sliding bracket on it in the 3D surface data acquisition device proposed by the utility model Figure 2 ;

[0043] Reference numerals:

[0044] 100. First linear motion platform; 200. Second linear motion platform; 210. Base; 220. First guide rail; 230. Second guide rail; 240. First slider; 250. Second slider; 260. Screw module; 261. Screw; 300. Sliding bracket; 310. Bottom support frame; 320. Top support frame; 321. Second elongated mounting hole; 330. Mounting plate; 331. First elongated mounting hole; 332. Assembly hole; 400. Laser; 410. Assembly hole; 500. Support seat; 600. Rotating platform; 700. Clamp; 710. Main body; 720. Bearing part; 730. Limiting part; 800. Product. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0047] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections. A person of ordinary skill in the art can understand the specific meanings of the above terms in the present invention based on the specific circumstances. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any appropriate manner in any one or more embodiments or examples.

[0048] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0049] In order to realize the collection of surface data of products with 3D curved surfaces (for example, the front cover of the watch body of a telephone watch, which has a top surface and a side surface circumferentially connected to the top surface), the present application relates to a 3D surface data collection device, which does not require human intervention and uses laser 400 to obtain surface data, thereby improving data accuracy and avoiding deviations introduced by human participation.

[0050] See also Figures 1 to 6 The 3D surface data acquisition device includes a first linear motion platform 100, a support base 500, a rotating platform 600, a second linear motion platform 200, a sliding bracket 300 and a control unit (not shown).

[0051] In some embodiments of this application, see Figure 1 and Figure 2 , the first linear motion platform 100 is a linear motor module.

[0052] The support base 500 is slidably placed on the first linear motion platform 100 . Specifically, the support base 500 is slidably set on the linear motor module and is driven by the linear motor module to move along the running extension direction of the first linear motion platform 100 .

[0053] A rotating platform 600 is provided on the support base 500 to provide a rotating force. The rotating platform 600 includes a DD motor (Direct Drive Motor).

[0054] The product 800 is placed on the rotating platform 600 so that the product 800 can be moved to the detection position driven by the first linear motion platform 100, and then the rotating platform 600 is rotated to realize data collection of different side surfaces of the product 800.

[0055] In some embodiments of the present application, in order to achieve the placement of product 800, see Figure 2 A fixture 700 is provided on the top of the rotating platform 600. At the initial stage of measurement, the product 800 is placed on the fixture 700 manually or by a robot to keep the product 800 stable. Afterwards, it can be stably moved to the detection position under the operation of the first linear motion platform 100.

[0056] In some embodiments of the present application, the clamp 700 includes a main body 710 and an adsorption portion (not shown).

[0057] See also Figure 2 The main body 710 is fixed to the top of the rotating platform 600 , and a protruding supporting portion 720 is provided in the middle of the main body 710 , and the supporting portion 720 is used to support the product 800 .

[0058] The adsorption portion is used to adsorb the product 800 when the product 800 is placed on the carrying portion 720 , ensuring that the product 800 remains stable when being moved by the first linear motion platform 100 .

[0059] In some embodiments of the present application, the adsorption portion can be a negative pressure chamber (not shown), the negative pressure chamber is formed in the supporting portion 720, and the surface of the supporting portion 720 for supporting the product is formed with an opening portion (not shown) connected to the negative pressure chamber, and the negative pressure chamber can be connected to a negative pressure production component (not shown) through a negative pressure pipeline (not shown).

[0060] When the negative pressure production component is turned on, the negative pressure production component extracts the air in the negative pressure chamber to form a vacuum negative pressure. At this time, since the product 800 is placed above the opening of the supporting part 720, the product 800 is firmly adsorbed and fixed on the top of the supporting part 720 through the opening under the adsorption effect of the super strong vacuum negative pressure, thereby ensuring the stability of the product 800.

[0061] In addition, the use of negative pressure adsorption products is a soft contact on the product 800 and does not cause hard contact damage to the product 800.

[0062] In order to realize the adsorption of the product 800 after the product 800 is placed in place, thereby ensuring the accuracy of the surface data acquisition, in some embodiments of the present application, still refer to Figure 2 The clamp 700 also includes a limiting portion 730, which is placed on the main body 710 and located circumferentially of the supporting portion 720. When the product 800 is placed on the supporting portion 720, the circumferential edge of the product 800 abuts against the limiting portion 730.

[0063] In some embodiments of the present application, in order to reduce the shielding effect of the limiting portion 730 on the data collection of the circumferential side surface of the product 800, see Figure 2 The limiting portion 730 can be a U-shaped block, which is installed on the surface of the main body 710 provided with the bearing portion 720 and is located circumferentially of the bearing portion 720. The number of the limiting portions 730 can be arbitrarily set without affecting data collection.

[0064] In some embodiments of the present application, the adsorption portion can also be a vacuum suction cup assembly, and a suction cup beam (not shown) can be set inside the supporting portion 720, and a vacuum suction cup (not shown) is set on the suction cup beam. The vacuum pump is connected to the vacuum suction cup, and the vacuum suction cup is adsorbed or detached from the product through the action of the vacuum pump.

[0065] In order to realize the mobility of the laser 400 so as to collect data on the top surface and side surface of the front cover of the watch body at different angles, in some embodiments of the present application, see Figure 1 and Figure 3 The position of the laser 400 is adjusted by adjusting the sliding bracket 300 installed on the second linear motion platform 200.

[0066] In some embodiments of the present application, the movement extension direction of the first linear motion platform 100 and the movement extension direction of the second linear motion platform 200 may be perpendicular to each other (see Figure 1 ), it may not be vertical.

[0067] In some embodiments of this application, see Figure 1 , the movement extension direction of the first linear motion platform 100 and the movement extension direction of the second linear motion platform 200 can be perpendicular.

[0068] The second linear motion platform 200 needs to support the sliding bracket 300 and the laser 400, so see Figure 3 The second linear motion platform 200 includes a base body 210 , a lead screw module 260 , a first guide rail 220 and a second guide rail 230 .

[0069] The first guide rail 220, the second guide rail 230 and the screw module 260 are all placed on the base body 210, and the first guide rail 220 and the second guide rail 230 are respectively located on both sides of the screw module 260, and the extension direction of the first guide rail 220 and the second guide rail 230 are respectively parallel to the extension direction of the screw rod 261 of the screw module 260.

[0070] The first guide rail 220 is provided with a first slider 240 that slides along it, and the number of the first sliders 240 can be set as needed; the second guide rail 230 is provided with a second slider 250 that slides along it, and the number of the second sliders 250 can be set as needed.

[0071] The bottom of the sliding bracket 300 is respectively connected to the first slider 240, the second slider 250 and the nut of the screw 261, so that when the screw 261 is working, the sliding bracket 300 slides along the length direction of the screw 261, so that the laser 400 approaches or moves away from the product 800.

[0072] In some embodiments of the present application, in order to support the laser 400 and facilitate the laser 400 to scan the product 800 to obtain data, the laser 400 is tilted on the sliding bracket 300 so that the laser 400 beam can scan not only the top surface but also the side surface.

[0073] See also Figures 4 to 6 The sliding bracket 300 includes a top support frame 320 and a bottom support frame 310 which are integrally formed. The frame structure not only reduces the weight of the bracket, but also makes it convenient to install the laser 400 on the sliding bracket 300 through the bracket.

[0074] The bottom support frame 310 is connected to the first slider 240 , the second slider 250 and the nut of the lead screw 261 respectively. The top support frame 320 is tilted on one side for mounting the laser 400 , so as to tilt the laser 400 .

[0075] In some embodiments of this application, see Figure 4 In order to install the laser 400 , a mounting plate 330 is installed on the inclined side of the top support frame 320 .

[0076] In order to adjust the installation position of the laser 400, a plurality of first elongated mounting holes 331 are opened on the mounting plate 330. The opening length direction of the first elongated mounting holes 331 projected onto the second linear motion platform 200 is perpendicular to the extension direction of the lead screw 261. When the movement extension direction of the first linear motion platform 100 and the movement extension direction of the second linear motion platform 200 are perpendicular, the opening length direction of the first elongated mounting holes 331 is parallel to the movement extension direction of the first linear motion platform 100.

[0077] The screw passes through the first elongated mounting hole 331 and is screwed into the assembly hole 410 in the housing of the laser 400 . The position of the laser 400 can be adjusted along the movement extension direction of the first linear motion platform 100 through the first elongated mounting hole 331 .

[0078] To ensure the stability of the Laser 400 installation, see Figure 4 Three first elongated mounting holes 331 are provided, and the three first elongated mounting holes 331 are arranged in a triangular shape to enhance the installation stability of the laser 400 .

[0079] In some embodiments of the present application, in order to adjust the laser 400 away from or close to the product along the inclined plane on which it is installed, see Figure 6 A plurality of second elongated mounting holes 321 are provided on the inclined side of the top support frame 320, and an assembly hole 332 corresponding to each second elongated mounting hole 321 is provided on the mounting plate 330. The opening direction of the second elongated mounting holes 321 is perpendicular to the opening direction of the first elongated mounting holes 331. Screws pass through the second elongated mounting holes 321 and the assembly holes 332 to fix the mounting plate 330 to the top support frame 320.

[0080] By adjusting the position of the screw in the second elongated mounting hole 321 , the mounting plate 330 can be moved away from or closer to the product along the tilted side of the top support frame 320 , thereby adjusting the laser 400 on the mounting plate 330 to tilt away from or closer to the product 800 .

[0081] The following describes the workflow of surface data collection using the front cover of the watch body as an example.

[0082] (1) A person or a robot places the product 800 on the fixture 700.

[0083] (2) The first linear motion platform 100 works to move the product 800 to the inspection position.

[0084] (3) Move the laser 400 into position.

[0085] (4) Start collecting data on the top surface.

[0086] During the acquisition process, it is necessary to control the first linear motion platform 100 to move the product 800 along the first linear motion platform 100 so that the laser 400 can fully acquire the laser 400 data of the top surface.

[0087] (5) After completing the top surface data acquisition, the rotating platform 600 is controlled to rotate, and at the same time, the second linear motion platform 200 is controlled to work, so that the laser beam can scan the entire side surface, thereby fully acquiring the laser data of the side surface.

[0088] The order of the above processes is not necessarily the actual execution order.

[0089] In this way, the data of the 3D curved surface of the entire product 800 is automatically completed without human intervention, and the laser 400 acquires data quickly and with high accuracy, which can assist in the accurate detection of the 3D curved surface.

[0090] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A 3D surface data acquisition device, characterized in that: include: The first linear motion platform; A support seat, which is slidably placed on the first linear motion platform; A rotating platform is rotatably placed on the support seat, and a product with a 3D curved surface is placed on the rotating platform, and the first linear motion platform drives the product to move to a detection position; a second linear motion platform, the motion extension direction of which is different from the motion extension direction of the first linear motion platform; A sliding bracket is slidably placed on the second linear motion platform, and the laser is tiltedly placed on the sliding bracket; A control unit is connected to the first linear motion platform, the rotation platform and the second linear motion platform respectively, and is used to control the movements of the first linear motion platform, the rotation platform and the second linear motion platform so that the laser can obtain 3D surface data of the product.

2. The 3D surface data acquisition device according to claim 1, characterized in that: The data acquisition device also includes: A clamp is located on top of the rotating platform and is used to stabilize the product.

3. The 3D surface data acquisition device according to claim 2, characterized in that: The fixture comprises: A main body portion, which is fixed to the top of the rotating platform, and has a protruding bearing portion in the middle of the main body portion, the bearing portion is used to bear the product; The adsorption portion is used to adsorb the product when the product is placed on the carrying portion.

4. The 3D surface data acquisition device according to claim 3, characterized in that: The adsorption portion is a negative pressure cavity formed in the carrying portion, and an opening communicating with the negative pressure cavity is formed on a surface of the carrying portion for carrying the product.

5. The 3D surface data acquisition device according to claim 3 or 4, characterized in that: The fixture further comprises: The limiting portion is placed on the main body and is located in the circumferential direction of the bearing portion.

6. The 3D surface data acquisition device according to claim 1, characterized in that: The second linear motion platform includes: seat body; A lead screw module is placed on the base; The first guide rail and the second guide rail are placed on the base body and are respectively located on both sides of the screw module, and the extension direction of the first guide rail and the second guide rail are parallel to the extension direction of the screw of the screw module. The first guide rail and the second guide rail are both provided with sliders, and the sliding bracket is respectively connected to the slider of the first guide rail, the slider of the second guide rail and the nut of the screw.

7. The 3D surface data acquisition device according to claim 1, characterized in that: The movement extension direction of the first linear motion platform and the movement extension direction of the second linear motion platform are perpendicular.

8. The 3D surface data acquisition device according to claim 1, characterized in that: The sliding bracket includes: a bottom support frame, which is placed on the second linear motion platform; A top supporting frame is located above the bottom supporting frame, and a side of the top supporting frame for mounting the laser is inclined.

9. The 3D surface data acquisition device according to claim 8, characterized in that: The sliding bracket also includes: A mounting plate is mounted on the inclined side of the top support frame. A plurality of first elongated mounting holes are provided on the mounting plate, and screws are passed through the first elongated mounting holes to be mounted on the laser.

10. The 3D surface data acquisition device according to claim 9, characterized in that: The length direction of the projection of the first elongated mounting hole onto the second linear motion platform is perpendicular to the movement extension direction of the second linear motion platform; A plurality of second elongated mounting holes are provided on one inclined side of the top support frame, and an assembly hole corresponding to each second elongated mounting hole is provided on the mounting plate. The opening direction of the second elongated mounting hole is perpendicular to the opening direction of the first elongated mounting hole, and the screws pass through the second elongated mounting hole and the assembly hole.

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