Measuring device
By using a drive mechanism and a universal floating mechanism, accurate contact between the reference surface and the test surface is achieved, solving the problems of reverse position and positional error of the reference surface and improving measurement accuracy.
Patent Information
- Application Number
- CN202520274628.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-20
AI Technical Summary
The existing measuring device is not suitable for situations where the reference surface is in the reverse position of the product, which causes the reference block to be unable to press directly on the reference surface, and the positional error affects the measurement results when the gripper holds the outer tube.
The device employs a drive mechanism and a measurement mechanism, including a displacement sensor, a clamping unit, a reference stop, and a drive unit. Through vertical drive along the X, Y, and Z axes, it achieves accurate contact between the reference stop and the product's reference and measurement surfaces, and eliminates positional errors through a universal floating mechanism.
It features a compact structure, ease of use, and the ability to accurately measure the distance between the product's reference surface and the test surface, thus improving measurement accuracy.
Smart Images
Figure CN223741546U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automated assembly technology, and in particular to a measuring device. Background Technology
[0002] The measuring device typically uses a cylinder to drive the probe of a displacement sensor to press against the test surface of the product under test, while simultaneously driving a reference block to press against the reference surface of the product under test. The test value is then read directly through the displacement sensor.
[0003] However, this measuring device is not suitable for situations where the reference surface is in the opposite position of the product, causing the reference stop to be unable to directly press against the reference surface. For example, as... Figure 1 As shown, Figure 1 The product 100 consists of an outer tube 110 and a coiled tube 120 pressed into the outer tube 110. The test surface 121 is the end face of the coiled tube 120, and the reference surface 111 is the end face of the outer tube 110 at the variable cross-section. Existing measuring devices cannot directly measure the relative distance between the test surface 121 and the reference surface 111 of the product 100, thus failing to obtain the pressing depth of the coiled tube 120. Furthermore, during testing, the outer tube 110, due to the bending process, has positional errors, causing the grippers to fail to locate the measurement center when clamping the outer tube 110, affecting the measurement results. Utility Model Content
[0004] The purpose of this invention is to provide a measuring device that is compact in structure, easy to use, and capable of accurately measuring the distance between the reference surface and the test surface of a product.
[0005] To achieve the above objectives, this utility model provides a measuring device, including a driving mechanism and a measuring mechanism. The driving mechanism is mounted on a fixed frame and is used to drive the measuring mechanism to move along the Z-axis. The measuring mechanism includes a displacement sensor, a clamping unit, a reference block, a first driving unit, and a second driving unit. The clamping unit is used to clamp the product to be measured. The first driving unit is used to drive the displacement sensor and the reference block to move along the X-axis. The second driving unit is used to drive the reference block to move along the Y-axis, so that the probe of the displacement sensor abuts against the measuring surface of the product, and the reference block abuts against the reference surface of the product. The displacement sensor is used to measure the distance between the measuring surface and the reference surface. The X-axis, Y-axis, and Z-axis are perpendicular to each other.
[0006] Optionally, the driving mechanism includes a third driving unit and a fixed base. The measuring mechanism is floatingly mounted on the fixed base, and the third driving unit is mounted on the fixed frame and used to drive the fixed base to move along the Z-axis.
[0007] Optionally, the first drive unit, the second drive unit, and the third drive unit are all cylinders.
[0008] Optionally, the measuring device further includes a universal floating mechanism, which is mounted on the fixed base.
[0009] Optionally, the omnidirectional floating mechanism includes a floating base, and the measuring mechanism is mounted on the floating base.
[0010] Optionally, the floating base is threadedly connected to the fixed base.
[0011] Optionally, the floating base is provided with a return hole, and the measuring device includes a fourth drive unit and a pin. The fourth drive unit is installed on the fixed base and is used to drive the pin to move along the Z-axis to insert into the return hole so that the floating base returns to the initial alignment position.
[0012] Optionally, the fourth drive unit is a cylinder.
[0013] Optionally, the clamping unit includes a gripper and a gripper cylinder, wherein the gripper cylinder is used to drive the gripper to clamp or release the product.
[0014] Optionally, the probe of the displacement sensor is retractable.
[0015] The measuring device provided by this utility model has at least the following effective effects:
[0016] 1) The entire measuring device is compact and easy to use, and can accurately measure the distance between the reference surface and the test surface of the product;
[0017] 2) The measurement reference uses a relative reference, resulting in more accurate feedback data from the displacement sensor;
[0018] 3) The universal floating mechanism can adaptively float so that the clamping unit can clamp the product, eliminate product position error, and improve measurement accuracy. Attached Figure Description
[0019] Those skilled in the art will understand that the accompanying drawings are provided to better understand the present invention and do not constitute any limitation on the scope of the present invention. Wherein:
[0020] Figure 1 This is a schematic diagram of the structure of the product to be measured;
[0021] Figure 2 A front view of a measuring device provided in an embodiment of this utility model;
[0022] Figure 3A side view of a measuring device provided in an embodiment of this utility model;
[0023] Figure 4 This is a partial enlarged view of the displacement sensor and the reference block before they are moved, according to an embodiment of the present invention.
[0024] Figure 5 This is a partial enlarged view of the displacement sensor and the reference stop block when they are moved into place, according to an embodiment of the present invention.
[0025] in:
[0026] 100 - Product; 110 - Outer tube; 111 - Reference surface; 120 - Coil; 121 - Test surface; 200 - Fixed frame; 310 - Displacement sensor; 320 - Clamping unit; 330 - Reference stop; 340 - First drive unit; 350 - Second drive unit; 410 - Third drive unit; 420 - Fixed base; 500 - Universal floating mechanism; 510 - Floating base; 610 - Fourth drive unit. Detailed Implementation
[0027] To make the objectives, advantages, and features of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are in a very simplified form and use non-precise proportions, intended only to facilitate and clearly illustrate the purpose of the embodiments of this utility model. Please refer to the accompanying drawings for a clearer understanding of the objectives, features, and advantages of this utility model. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes and to enable those skilled in the art to understand and read the content disclosed in the specification. They are not intended to limit the implementation conditions of this utility model. Any modifications to the structure, changes in proportions, or adjustments to the size, provided they produce the same or similar effects and achieve the same objectives as this utility model, should still fall within the scope of the technical content disclosed in this utility model.
[0028] As used in this invention, the singular forms “a,” “an,” and “the” include plural objects unless otherwise expressly indicated. As used in this invention, the term “or” is generally used to include “and / or” unless otherwise expressly indicated. As used in this invention, the term “a number” is generally used to include “at least one” unless otherwise expressly indicated. As used in this invention, the term “at least two” is generally used to include “two or more” unless otherwise expressly indicated. Furthermore, the terms “first,” “second,” and “third” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first,” “second,” or “third” may explicitly or implicitly include one or at least two of that feature.
[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] Please refer to Figures 2-5 and combined Figure 1 This embodiment provides a measuring device, including a driving mechanism and a measuring mechanism. The driving mechanism is mounted on a fixed frame 200 and is used to drive the measuring mechanism to move along the Z-axis. The measuring mechanism includes a displacement sensor 310, a clamping unit 320, a reference block 330, a first driving unit 340, and a second driving unit 350. The clamping unit 320 is used to clamp the product 100 to be measured. The first driving unit 340 is used to drive the displacement sensor 310 and the reference block 330 to move along the X-axis. The second driving unit 350 is used to drive the reference block 330 to move along the Y-axis, so that the probe of the displacement sensor 310 abuts against the measuring surface of the product 100, and the reference block 330 abuts against the reference surface 111 of the product 100. The displacement sensor 310 is used to measure the distance between the measuring surface and the reference surface 111. The X-axis, Y-axis, and Z-axis are perpendicular to each other.
[0031] The measuring device provided in this embodiment can be used to measure the depth to which the coil 120 is pressed into the outer sleeve 110. Its measuring principle is as follows:
[0032] The measuring mechanism is driven by a drive mechanism to move along the Z-axis so that the clamping unit 320 approaches and clamps the product 100 to be measured. Then, the first drive unit 340 drives the displacement sensor 310 and the reference block 330 to move in the opposite direction of the X-axis so that the probe of the displacement sensor 310 abuts against the measuring surface of the product 100. At the same time, the reference block 330 is misaligned with the product 100 to avoid obstructing the movement of the reference block 330 in the opposite direction of the Y-axis. Then, the second drive unit 350 drives the reference block 330 to move in the opposite direction of the Y-axis. Finally, the first drive unit 340 drives the displacement sensor 310 and the reference block 330 to move in the positive direction of the X-axis so that the right side of the reference block 330 abuts against the reference surface 111 of the product 100. At this time, the distance between the measuring surface and the reference surface 111 can be read by the displacement sensor 310.
[0033] The entire measuring device is compact and easy to use, and can accurately measure the distance between the reference surface 111 and the test surface 121 of the product 100.
[0034] It should be noted that the displacement sensor 310 is a commercially available device. This embodiment does not limit the specific model of the displacement sensor 310. The probe of the displacement sensor 310 is retractable. Specifically, when the first drive unit 340 drives the displacement sensor 310 and the reference block 330 to move in the opposite direction of the X-axis so that the probe of the displacement sensor 310 comes into contact with the measuring surface of the product 100, the probe is compressed. When the first drive unit 340 drives the displacement sensor 310 and the reference block 330 to move in the positive direction of the X-axis so that the right side of the reference block 330 comes into contact with the reference surface 111 of the product 100, the probe will reset at least partially. It may still be in a compressed state or it may just return to its initial state, but at this time the probe is still in contact with the measuring surface of the product 100.
[0035] Specifically, the driving mechanism includes a third driving unit 410 and a fixed base 420. The measuring mechanism is floatingly mounted on the fixed base 420. The third driving unit 410 is mounted on the fixed frame 200 and is used to drive the fixed base 420 to move along the Z-axis. In this embodiment, the third driving unit 410 is, for example, a cylinder, and this invention does not limit this. The fixed base 420 is mounted on the telescopic shaft of the cylinder. When the fixed base 420 is driven to move along the Z-axis by the cylinder, it can drive the entire measuring mechanism to move along the Z-axis.
[0036] In this embodiment, the floating measuring device further includes a universal floating mechanism 500, through which the measuring mechanism is mounted on the fixed base 420. The universal floating mechanism 500 enables adaptive floating to facilitate clamping of the product 100 by the clamping unit 320, eliminating positional errors of the product 100 and improving measurement accuracy. It should be noted that this universal floating mechanism 500 is prior art, and will not be described in detail here.
[0037] Furthermore, the omnidirectional floating mechanism 500 includes a floating base 510, on which the measuring mechanism is mounted. When the fixed base 420 is moved along the Z-axis by a cylinder, the floating base 510 can be moved, thereby enabling the entire measuring mechanism to move along the Z-axis.
[0038] In this embodiment, the floating base 510 is threadedly connected to the fixed base 420.
[0039] Furthermore, a return hole is provided on the floating base 510. The floating measuring device includes a fourth drive unit 610 and a pin. The fourth drive unit 610 is mounted on the fixed base 420 and is used to drive the pin to move along the Z-axis to insert into the return hole, so that the floating base 510 returns to the initial alignment position. It is understood that, in order to facilitate the clamping unit 320 to clamp the product 100, the floating base 510 may undergo a certain positional offset relative to the initial alignment position, thereby affecting the measurement results of the displacement sensor 310. Therefore, by driving the pin to move along the Z-axis to insert into the return hole through the fourth drive unit 610, the floating base 510, the measuring mechanism on it, and the clamped product 100 can be forced back to the initial alignment position, thereby improving the measurement accuracy of the displacement sensor 310.
[0040] In this embodiment, the fourth drive unit 610 is, for example, a cylinder, and the first drive unit 340 and the second drive unit 350 can also be cylinders; this utility model does not impose any limitations on this. The first drive unit 340 is mounted on the floating base 510, and the second drive unit 350 can be mounted on the telescopic rod of the first drive unit 340 via a cylinder mounting plate.
[0041] In this embodiment, the clamping unit 320 includes a gripper and a gripper cylinder. The gripper cylinder can be installed on the floating base 510 and is used to drive the gripper to clamp or release the product 100.
[0042] In summary, this utility model embodiment provides a measuring device with a compact structure and convenient use, capable of accurately measuring the distance between the reference surface 111 and the test surface 121 of the product 100. Furthermore, by incorporating a universal floating mechanism 500, the device can adaptively float to facilitate clamping of the product 100 by the clamping unit 320, eliminating positional errors of the product 100 and improving measurement accuracy.
[0043] Furthermore, it should be understood that although the present invention has been disclosed above with reference to preferred embodiments, these embodiments are not intended to limit the present invention. For any person skilled in the art, many possible variations and modifications can be made to the present invention's technical solutions using the disclosed technical content, or equivalent embodiments can be modified accordingly, without departing from the scope of the present invention's technical solutions. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention's technical solutions, shall still fall within the protection scope of the present invention's technical solutions.
Claims
1. A measuring device, characterized in that The measuring device comprises a driving mechanism and a measuring mechanism, the driving mechanism is installed on a fixed frame and is used to drive the measuring mechanism to move along a Z axis, the measuring mechanism comprises a displacement sensor, a clamping unit, a reference block, a first driving unit and a second driving unit, the clamping unit is used to clamp a product to be measured, the first driving unit is used to drive the displacement sensor and the reference block to move along an X axis, the second driving unit is used to drive the reference block to move along a Y axis, so that a probe of the displacement sensor abuts against a measuring surface of the product, and the reference block abuts against a reference surface of the product, and the displacement sensor is used to measure a distance between the measuring surface and the reference surface, wherein the X axis, the Y axis and the Z axis are perpendicular to each other.
2. The measuring device of claim 1, wherein, The driving mechanism comprises a third driving unit and a fixed base, the measuring mechanism is floatingly installed on the fixed base, and the third driving unit is installed on the fixed frame and is used to drive the fixed base to move along the Z axis.
3. The measuring device of claim 2, wherein, The first driving unit, the second driving unit and the third driving unit are all air cylinders.
4. The measuring device of claim 2, wherein, The measuring device further comprises a universal floating mechanism, and the measuring mechanism is installed on the fixed base through the universal floating mechanism.
5. The measuring device of claim 4, wherein, The universal floating mechanism comprises a floating base, and the measuring mechanism is installed on the floating base.
6. The measuring device of claim 5, wherein, The floating base is threadedly connected with the fixed base.
7. The measuring device of claim 5, wherein, A return hole is formed in the floating base, the measuring device comprises a fourth driving unit and a latch, the fourth driving unit is installed on the fixed base and is used to drive the latch to move along the Z axis to be inserted into the return hole, so that the floating base returns to an initial centering position.
8. The measuring device of claim 7, wherein, The fourth driving unit is an air cylinder.
9. The measuring device of claim 1, wherein, The clamping unit comprises a clamping jaw and a clamping jaw air cylinder, and the clamping jaw air cylinder is used to drive the clamping jaw to clamp or release the product.
10. The measuring device of claim 1, wherein, The probe of the displacement sensor is retractable.