An apparatus for calibrating a test sieve and a method of use

Abstract

This invention discloses an auxiliary device and application method for calibrating test sieves, including a fully automatic microscopic examination instrument and a movable platform mounted on the instrument. A first auxiliary positioning component and a second auxiliary positioning component are detachably connected to the movable platform. The first and second auxiliary positioning components are located on the same horizontal axis. Suction cup components are provided on the first and second auxiliary positioning components, and these components are adapted to the arc-shaped structure of the outer wall of the test sieve, tightly fitting the side of the sieve. The test sieve has a cylindrical structure with a diameter of 150mm to 300mm. The detachable connection between the movable platform and the first and second auxiliary positioning components is a bolt connection.

Description

Technical Field

[0001] This invention belongs to the field of test sieve calibration technology, specifically relating to an auxiliary device and application method for calibrating test sieves. Background Technology

[0002] In fields such as metrology and material sieving, accurate calibration of test sieves is crucial for the reliability of subsequent sieving results. Fully automated microscopic examination systems are commonly used for test sieve calibration. Their working principle involves a fixed camera and a platform below that moves automatically under computer control to complete the comprehensive calibration of the test sieves. However, existing technology has a significant drawback: during platform movement, slight vibrations are unavoidable. These vibrations cause slight drift of the test sieves placed on the platform, resulting in a deviation of the relative position of the test sieve and camera from the preset calibration benchmark, severely affecting the accuracy and repeatability of measurements. Summary of the Invention

[0003] The purpose of this invention is to provide an auxiliary device and application method for calibrating test sieves, so as to solve the problems mentioned in the background art.

[0004] The objective of this invention is achieved through the following technical solution: an auxiliary device for calibrating test sieves, comprising a fully automatic microscopic examination instrument and a movable platform disposed on the fully automatic microscopic examination instrument, wherein a first auxiliary positioning component and a second auxiliary positioning component are detachably connected to the movable platform, and the first auxiliary positioning component and the second auxiliary positioning component are located on the same horizontal axis.

[0005] The first and second auxiliary positioning components are equipped with suction cup components, which are adapted to the arc-shaped structure of the outer wall of the test sieve and fit tightly against the side of the test sieve.

[0006] Furthermore, the test sieve has a cylindrical structure and a diameter of 150mm to 300mm.

[0007] Furthermore, the movable platform is detachably connected to the first auxiliary positioning component and the second auxiliary positioning component via bolts.

[0008] Furthermore, the movable platform is detachably connected to the first auxiliary positioning component and the second auxiliary positioning component via magnetic adsorption.

[0009] Furthermore, the first auxiliary positioning component and the second auxiliary positioning component adopt the same structural configuration, and the first auxiliary positioning component and the second auxiliary positioning component include a ball screw pair and a linear slider bearing assembly that is spaced apart from the ball screw pair.

[0010] The ball screw assembly includes a screw and a nut that cooperates with the screw, and the linear slider bearing assembly includes a screw and a linear bearing slider that cooperates with the screw.

[0011] Furthermore, the lead screw includes a screw section that mates with a ball screw pair and a smooth section that mates with the linear slider bearing assembly.

[0012] Furthermore, the suction cup assembly includes an elastic silicone vacuum suction cup surface and a connecting end fixed to the end of the elastic silicone vacuum suction cup surface. The connecting end is a threaded end, which engages with a threaded hole on the optical rod section of the first auxiliary positioning assembly and the second auxiliary positioning assembly.

[0013] Furthermore, the optical rod section that mates with the linear slider bearing assembly is provided with scale markings.

[0014] A method for applying an auxiliary device for calibrating test sieves includes the following steps;

[0015] The first and second auxiliary positioning components are symmetrically installed on the left and right edges of the fully automatic microscopic examination platform, respectively, to ensure that the fixed seat is adsorbed flat and without looseness. According to the approximate size of the test sieve, the handwheel is initially rotated to extend and retract the adjustable robotic arm to a suitable length, so that the suction cup assembly is in the initial position that is convenient for clamping the test sieve.

[0016] Place the test sieve to be calibrated in the approximate center of the microscopic examination platform, ensuring that the test sieve is placed stably and without tilting. The diameter of the test sieve is 150mm to 300mm.

[0017] Adjust the center positioning of the first auxiliary positioning component and the second auxiliary positioning component, rotate the handwheels of the two robotic arms respectively, drive the robotic arms to extend and retract inward, so that the suction cup component gradually approaches the left and right outer walls of the test sieve. Refer to the scale markings on the robotic arms to ensure that the extension and retraction of the two robotic arms are consistent, until the suction cup component is completely attached to the outer wall of the test sieve.

[0018] After the suction cup assembly is attached to the test sieve, press the suction cup lightly to ensure a firm adhesion. Then rotate the locking knob to lock and fix the whole assembly, fixing the length of the robotic arm and preventing it from shifting. Check if the test sieve is in the center of the platform. If there is a deviation, fine-tune the handwheel to correct it until it is fully positioned.

[0019] After calibration and device disassembly, and once the test sieve is fixed, start the fully automatic microscopic examination instrument for calibration. After calibration, loosen the handwheel locking knob, rotate the handwheel in the opposite direction to extend and retract the robotic arm outward, separating the suction cup assembly from the test sieve. Then remove the test sieve, and finally remove the magnetic fixing base from the platform.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] This invention improves calibration accuracy by using strong magnetic adsorption, either bolted or magnetically, to ensure that the device itself has no relative displacement with the platform. Combined with the suction cup assembly for a stable grip on the test sieve, it effectively counteracts the vibration caused by platform movement, prevents the test sieve from drifting, and ensures that the test sieve is always in the calibration reference position, significantly improving the accuracy and repeatability of calibration measurements.

[0022] This invention enhances versatility, with an adjustable robotic arm extension stroke to adapt to test sieve diameters ranging from 150mm to 300mm. It eliminates the need to replace dedicated fixing devices for test sieves of different sizes, making it suitable for calibration operations of various test sieves within this size range and reducing equipment investment costs.

[0023] This invention is convenient and efficient to operate. The magnetic fixing base can be quickly attached to the platform without drilling or additional fasteners. The handwheel adjustment method is simple and intuitive. With the scale markings, the center positioning and fixing of the test sieve can be completed quickly, which greatly shortens the installation and adjustment time and improves the efficiency of calibration work.

[0024] The suction cup assembly of this invention is made of highly elastic silicone material and has an arc-shaped fitting design. It is a soft contact clamping device, which avoids scratches or extrusion deformation of the outer wall of the test sieve caused by rigid clamping, thus protecting the structural integrity and calibration accuracy of the test sieve. Attached Figure Description

[0025] Figure 1 This is a schematic diagram showing the overall connection between the first auxiliary positioning component and the second auxiliary positioning component of the present invention and the movable platform;

[0026] Figure 2 This is the present invention. Figure 1 Schematic diagram of the first auxiliary positioning component / second auxiliary positioning component;

[0027] Figure 3 This is the present invention. Figure 1 Schematic diagram of the smooth rod section that mates with the linear slider bearing assembly;

[0028] Figure 4 This is the present invention. Figure 2 A magnified view of a portion of the image;

[0029] Figure 5 This is the present invention. Figure 2 Schematic diagram of the threaded hole on the end face of the nut;

[0030] Figure 6 This is a schematic diagram of the top block of the present invention in conjunction with the lead screw;

[0031] Figure 7 This is a schematic diagram of the bolts that mate with the top block in this invention. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] like Figure 1-7 As shown, an auxiliary device for calibrating test sieves includes a fully automatic microscopic examination instrument 1 and a movable platform 2 mounted on the fully automatic microscopic examination instrument 1. A first auxiliary positioning component 3 and a second auxiliary positioning component 4 are detachably connected to the movable platform 2. The first auxiliary positioning component 3 and the second auxiliary positioning component 4 are located on the same horizontal axis.

[0036] The first auxiliary positioning component 3 and the second auxiliary positioning component 4 are provided with suction cup components 5, which are adapted to the arc-shaped structure of the outer wall of the test sieve 6 and fit tightly against the side of the test sieve 6.

[0037] The first auxiliary positioning component 3 and the second auxiliary positioning component 4 are located at the center of the longitudinal (width) direction of the movable platform 2 (square platform).

[0038] In a further preferred embodiment of the present invention, the test sieve 6 is configured with a cylindrical structure and a diameter of 150mm to 300mm.

[0039] In order to meet the experimental requirements, the diameter of the test sieve in the above embodiments was set from 150mm to 300mm.

[0040] In a further preferred embodiment of the present invention, the movable platform 2 is detachably connected to the first auxiliary positioning component 3 and the second auxiliary positioning component 4 by bolt connection.

[0041] In the above embodiments, the detachable connection facilitates disassembly and installation. During installation, a shallow groove is provided on the end face of the movable platform 2 to accommodate the first auxiliary positioning component 3 and the second auxiliary positioning component 4. The depth of the shallow groove is 2-3mm, and the shallow groove cooperates with the ball screw pair 7 and the linear slider bearing assembly 8.

[0042] In a further preferred embodiment of the present invention, the movable platform 2 is detachably connected to the first auxiliary positioning component 3 and the second auxiliary positioning component 4 via magnetic adsorption.

[0043] In the above embodiments, the detachable connection facilitates disassembly and installation. During installation, a shallow groove is provided on the end face of the movable platform 2 to accommodate the first auxiliary positioning component 3 and the second auxiliary positioning component 4. The depth of the shallow groove is 2-3mm, and the shallow groove cooperates with the ball screw pair 7 and the linear slider bearing assembly 8.

[0044] When magnetic adsorption is used, a magnetic pad is fixedly installed at the bottom of the ball screw assembly 7 and the linear slider bearing assembly 8 by bolts to cooperate with the movable platform 2, which is a metal platform.

[0045] In a further preferred embodiment of the present invention, the first auxiliary positioning component and the second auxiliary positioning component adopt the same structure. The first auxiliary positioning component 3 and the second auxiliary positioning component 4 include a ball screw pair 7 and a linear slider bearing assembly 8 that is spaced apart from the ball screw pair 7.

[0046] The ball screw assembly 7 includes a screw 9 and a nut 10 that cooperates with the screw 9, and the linear slider bearing assembly 8 includes a screw 9 and a linear bearing slider 11 that cooperates with the screw 9.

[0047] In the above embodiment, the ball screw pair 7 and the linear slider bearing assembly 8 are used to enable the two sets of symmetrical screws 9 to move along the same straight line, and the test sieve 6 is clamped and fixed by the suction cup assembly 5 on the first auxiliary positioning assembly 3 and the second auxiliary positioning assembly 4.

[0048] Among them, a handwheel is fixedly installed at the end of the lead screw 9 of the ball screw assembly 7. By initially rotating the handwheel, the adjustable lead screw can be extended or retracted to a suitable length, so that the suction cup assembly is in the initial position that is convenient for clamping the test sieve.

[0049] In a further preferred embodiment of the present invention, the lead screw 9 includes a screw section 12 that cooperates with the ball screw assembly 7 and a smooth section 13 that cooperates with the linear slider bearing assembly 11.

[0050] In the above embodiment, a portion of the lead screw 9 that cooperates with the linear slider bearing assembly 11 is configured as a smooth rod section 13, and the stability of the lead screw operation is achieved through the cooperation between the linear slider bearing assembly 11 and the smooth rod section 13.

[0051] In a further preferred embodiment of the present invention, the suction cup assembly 5 includes an elastic silicone vacuum suction cup surface 14 and a connecting end 15 fixed to the end of the elastic silicone vacuum suction cup surface. The connecting end 15 is a threaded end, which engages with a threaded hole on the optical rod section 13 of the first auxiliary positioning assembly 3 and the second auxiliary positioning assembly 4.

[0052] In the above embodiment, a high-elasticity silicone vacuum suction cup is used to contact the test sieve at one end near the test sieve. The end face of the suction cup is an arc-shaped contact surface, which is adapted to the arc-shaped structure of the outer wall of the test sieve. It can fit tightly against the side of the test sieve and can quickly form a stable adsorption force after contacting the test sieve, avoiding damage to the test sieve caused by hard contact. At the same time, it ensures the stability of the clamping and prevents the test sieve from undergoing slight displacement during vibration.

[0053] In a further preferred embodiment of the present invention, the optical rod segment 13 that cooperates with the linear slider bearing assembly 8 is provided with scale markings.

[0054] In the above embodiment, a scale mark (scale accuracy of 1mm) is provided on the optical rod section 13 that cooperates with the linear slider bearing assembly 11 to indicate the extension distance of the robotic arm, assist the operator in judging the symmetrical position of the two suction cup assemblies, and ensure that the test sieve is clamped in the center of the platform.

[0055] A method for applying an auxiliary device for calibrating test sieves includes the following steps;

[0056] The first and second auxiliary positioning components are symmetrically installed on the left and right edges of the fully automatic microscopic examination platform, respectively, to ensure that the fixed seat is adsorbed flat and without looseness. According to the approximate size of the test sieve, the handwheel is initially rotated to extend and retract the adjustable robotic arm (the smooth rod section) to a suitable length, so that the suction cup assembly is in the initial position that is convenient for clamping the test sieve.

[0057] Place the test sieve to be calibrated in the approximate center of the microscopic examination platform, ensuring that the test sieve is placed stably and without tilting. The diameter of the test sieve is 150mm to 300mm.

[0058] Adjust the center positioning of the first auxiliary positioning component and the second auxiliary positioning component, rotate the handwheels of the two robotic arms respectively, drive the robotic arms to extend and retract inward, so that the suction cup component gradually approaches the left and right outer walls of the test sieve. Refer to the scale markings on the robotic arms to ensure that the extension and retraction of the two robotic arms are consistent, until the suction cup component is completely attached to the outer wall of the test sieve.

[0059] After the suction cup assembly is attached to the test sieve, press the suction cup lightly to ensure a firm adhesion. Then rotate the locking knob to lock and fix the whole assembly, fixing the length of the robotic arm and preventing it from shifting. Check if the test sieve is in the center of the platform. If there is a deviation, fine-tune the handwheel to correct it until it is fully positioned.

[0060] After calibration and device disassembly, and once the test sieve is fixed, start the fully automatic microscopic examination instrument for calibration. After calibration, loosen the handwheel locking knob, rotate the handwheel in the opposite direction to extend and retract the robotic arm outward, separating the suction cup assembly from the test sieve. Then remove the test sieve, and finally remove the magnetic fixing base from the platform.

[0061] The screw can be driven to rotate forward or backward by rotating the handwheel, thereby extending and retracting horizontally to adjust the distance between the suction cup assembly and the outer wall of the test sieve. The extension stroke of the robotic arm is designed to be 75mm to 150mm, which, combined with the test sieve diameter range of 150mm to 300mm, ensures that it can meet the clamping requirements of test sieves of different sizes.

[0062] The locking knob is a top block located in the through hole on the circumference of the nut of the ball screw pair. The top block is cylindrical and tapered towards the through hole. The end face of the top block away from the tapered shape has the same tooth profile as the nut. A threaded hole is fixedly opened on the end face of the nut, which is connected to the through hole. A bolt is threaded into the threaded hole. The end of the bolt is tapered and mates with the tapered surface of the top block. The locking effect is achieved by locking the bolt on the end face, through the engagement of the tapered surface of the bolt and the tapered surface of the top block.

[0063] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0064] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An auxiliary device for calibrating test sieves, comprising a fully automatic microscopic examination instrument (1) and a movable platform (2) mounted on the fully automatic microscopic examination instrument (1), characterized in that: The movable platform (2) is detachably connected to the first auxiliary positioning component (3) and the second auxiliary positioning component (4), which are located on the same horizontal axis. The first auxiliary positioning component (3) and the second auxiliary positioning component (4) are provided with suction cup components (5), which are adapted to the arc-shaped structure of the outer wall of the test sieve (6) and fit tightly against the side of the test sieve (6).

2. The auxiliary device for calibrating test sieves according to claim 1, characterized in that: The test sieve (6) has a cylindrical structure and a diameter of 150mm to 300mm.

3. The auxiliary device for calibrating test sieves according to claim 2, characterized in that: The movable platform (2) is detachably connected to the first auxiliary positioning component (3) and the second auxiliary positioning component (4) by bolt connection.

4. The auxiliary device for calibrating test sieves according to claim 2, characterized in that: The movable platform (2) is detachably connected to the first auxiliary positioning component (3) and the second auxiliary positioning component (4) by magnetic adsorption.

5. The auxiliary device for calibrating test sieves according to claim 3 or 4, characterized in that: The first auxiliary positioning component and the second auxiliary positioning component adopt the same structure. The first auxiliary positioning component (3) and the second auxiliary positioning component (4) include a ball screw pair (7) and a linear slider bearing assembly (8) that is spaced apart from the ball screw pair (7). The ball screw assembly (7) includes a screw (9) and a nut (10) that cooperates with the screw (9), and the linear slider bearing assembly (8) includes a screw (9) and a linear bearing slider (11) that cooperates with the screw (9).

6. The auxiliary device for calibrating test sieves according to claim 5, characterized in that: The lead screw (9) includes a screw section (12) that cooperates with the ball screw pair (7) and a smooth section (13) that cooperates with the linear slider bearing assembly (11).

7. The auxiliary device for calibrating test sieves according to claim 6, characterized in that: The suction cup assembly (5) includes an elastic silicone vacuum suction cup surface (14) and a connecting end (15) fixed to the end of the elastic silicone vacuum suction cup surface. The connecting end (15) is a threaded end, which engages with the threaded hole on the smooth rod section (13) of the first auxiliary positioning assembly (3) and the second auxiliary positioning assembly (4).

8. The auxiliary device for calibrating test sieves according to claim 7, characterized in that: The smooth rod section (13) that mates with the linear slider bearing assembly (8) is provided with scale markings.

9. A method for applying the auxiliary device for calibrating a test sieve according to claim 8, characterized in that: Includes the following steps; The first and second auxiliary positioning components are symmetrically installed on the left and right edges of the fully automatic microscopic examination platform, respectively, to ensure that the fixed seat is adsorbed flat and without looseness. According to the approximate size of the test sieve, the handwheel is initially rotated to extend and retract the adjustable robotic arm to a suitable length, so that the suction cup assembly is in the initial position that is convenient for clamping the test sieve. Place the test sieve to be calibrated in the approximate center of the microscopic examination platform, ensuring that the test sieve is placed stably and without tilting. The diameter of the test sieve is 150mm to 300mm. Adjust the center positioning of the first auxiliary positioning component and the second auxiliary positioning component, rotate the handwheels of the two robotic arms respectively, drive the robotic arms to extend and retract inward, so that the suction cup component gradually approaches the left and right outer walls of the test sieve. Refer to the scale markings on the robotic arms to ensure that the extension and retraction of the two robotic arms are consistent, until the suction cup component is completely attached to the outer wall of the test sieve. After the suction cup assembly is attached to the test sieve, press the suction cup lightly to ensure a firm adhesion. Then rotate the locking knob to lock and fix the whole assembly, fixing the length of the robotic arm and preventing it from shifting. Check if the test sieve is in the center of the platform. If there is a deviation, fine-tune the handwheel to correct it until it is fully positioned. After calibration and device disassembly, and once the test sieve is fixed, start the fully automatic microscopic examination instrument for calibration. After calibration, loosen the handwheel locking knob, rotate the handwheel in the opposite direction to extend and retract the robotic arm outward, separating the suction cup assembly from the test sieve. Then remove the test sieve, and finally remove the magnetic fixing base from the platform.

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