Measuring device and curved workpiece measuring system

Abstract

The present invention discloses a measuring device, which includes a base, a first bracket, a first driving member, a first measuring assembly, a first counterweight assembly and a carrier assembly, wherein the first bracket is connected to the base, and the first driving member is connected to the first bracket; the first driving member can drive the first measuring assembly to move toward or away from the base; the first counterweight assembly can apply force to the first measuring assembly to offset part or all of the gravity of the first measuring assembly, thereby reducing the load of the first measuring assembly on the first driving member; the carrier assembly is connected to the base and is used to install a workpiece to be measured. The measuring device of the present invention has high measurement accuracy. The present invention also provides a curved workpiece measurement system, which can improve the accuracy of curved workpiece measurement.

Description

Technical Field

[0001] The present invention relates to the field of measurement technology, and in particular to a measuring device and a curved surface workpiece measuring system. Background Art

[0002] Measuring device refers to the combination of measuring devices and auxiliary equipment for measurement needs, which is used to measure parameter information such as workpiece length, width and surface accuracy. Existing measuring devices are prone to large measurement deviations without knowing it, especially in spatial measurement conditions. How to improve measurement accuracy has become a difficult problem that needs to be solved urgently in the measurement industry. Summary of the invention

[0003] The present invention provides a measuring device and a curved workpiece measuring system to solve the technical problem of large measurement deviation.

[0004] The present invention provides a measuring device, comprising:

[0005] Base;

[0006] A first bracket, the first bracket is connected to the base;

[0007] A first driving member, the first driving member is connected to the first bracket;

[0008] A first measuring component, the first measuring component is connected to an output end of the first driving member, and the first driving member can drive the first measuring component to move toward or away from the base;

[0009] a first counterweight assembly, the first counterweight assembly being connected to the bracket and the first measuring assembly, and the first counterweight assembly being capable of applying force to the first measuring assembly to offset part or all of the gravity of the first measuring assembly, thereby reducing the load of the first measuring assembly on the first driving member;

[0010] The carrier assembly is connected to the base and is used to mount the workpiece to be measured so as to be measured by the first measuring assembly.

[0011] In one embodiment, the first counterweight assembly is a cylinder, which is fixedly connected to the first bracket, and the piston rod of the cylinder is connected to the first measuring assembly. The cylinder can apply a pulling force to the first measuring assembly through the piston rod to offset part or all of the gravity of the first measuring assembly.

[0012] In one embodiment, the number of the first counterweight assemblies is at least two, the at least two first counterweight assemblies are respectively located on both sides of the first driving member and are arranged parallel to each other, and the at least two first counterweight assemblies are both connected to the first measuring assembly.

[0013] In one embodiment, the measuring device further comprises a first mounting plate and a second mounting plate, the first mounting plate is fixedly connected to the first bracket, and the first counterweight assembly and the first driving member are both disposed on the first mounting plate;

[0014] The second mounting plate is connected to the output end of the first driving member and the first counterweight assembly. The first driving member drives the second mounting plate to drive the first measuring assembly to move toward or away from the base. The first counterweight assembly can apply a pulling force to the second mounting plate to offset part or all of the gravity of the first counterweight assembly and the second mounting plate.

[0015] In one embodiment, the measuring device further comprises:

[0016] A second bracket, the second bracket is connected to the base and is spaced apart from and arranged opposite to the first bracket;

[0017] a second driving member connected to the second bracket;

[0018] The second measuring component is connected to the output end of the second driving component, and the second driving component can drive the second measuring component to move toward or away from the base; the second measuring component and the first measuring component can be located on both sides of the carrier component respectively, and the second measuring component and the first measuring component can jointly measure the workpiece installed on the carrier component.

[0019] In one embodiment, the measuring device further comprises a first translation assembly and a second translation assembly, the first translation assembly comprises a third driving member, and the second translation assembly comprises a fourth driving member;

[0020] The third driving member is fixedly connected to the base, the output end of the third driving member is connected to the fourth driving member, and the third driving member can drive the fourth driving member to move along a first preset direction parallel to the base;

[0021] The output end of the fourth driving member is connected to the carrier assembly. The fourth driving member can drive the carrier assembly to move along a second preset direction parallel to the base, and the first preset direction and the second preset direction are set at an angle.

[0022] In one embodiment, the carrier assembly includes a first rotating assembly, a second rotating assembly and a third rotating assembly, the first rotating assembly is connected to the third driving member, the second rotating assembly is connected to the first rotating assembly, and the third rotating assembly is fixedly connected to the second rotating assembly and is used to mount the workpiece to be measured;

[0023] The first rotating component is vertically arranged relative to the base, and the first rotating component can rotate on its own and drive the second rotating component to rotate; the second rotating component can rotate in a direction perpendicular to the first rotating component, and drive the third rotating component to adjust the angle relative to the first rotating component; the third rotating component can rotate on its own and drive the workpiece to be measured to rotate.

[0024] In one embodiment, the first rotating assembly includes a fifth driving member and a first carrier, the fifth driving member is fixedly connected to the output end of the fourth driving member, the output end of the fifth driving member is fixedly connected to the first carrier, the side wall of the first carrier is perpendicular to the base, and the fifth driving member can drive the first carrier to rotate;

[0025] The second rotating assembly includes a sixth driving member and a second carrier, wherein the sixth driving member is fixedly connected to the side wall of the first carrier, and the second carrier is disposed between the sixth driving member and the first carrier, and one side of the second carrier is connected to the output end of the sixth driving member, and the other side is movably connected to the first carrier, and the sixth driving member can drive the second carrier to rotate relative to the first carrier;

[0026] The third rotating assembly includes a seventh driving member and a third carrier. The third carrier is used to mount the workpiece to be measured. The seventh driving member is fixedly connected to the bottom wall of the second carrier. The output end of the seventh driving member is connected to the third carrier. The seventh driving member can drive the third carrier to rotate.

[0027] In one embodiment, the fifth driving member is a DD direct drive motor; and / or,

[0028] The sixth driving element is a DD direct drive motor; and / or,

[0029] The seventh driving component is a DD direct drive motor.

[0030] In the measuring device provided by the present invention, the first driving member can drive the first measuring component to move relative to the carrier component on the base, so that the first measuring component can measure the workpiece to be measured, and the first counterweight component offsets part or all of the gravity of the first measuring component by applying force to the first measuring component, thereby reducing the load of the first measuring component on the first driving member, so that the first driving member can accurately drive the first measuring component to move to the expected position, preventing displacement deviation caused by excessive gravity of the first measuring component, which is beneficial to improving the measurement accuracy of the measuring device.

[0031] The present invention further provides a curved surface workpiece measuring system, comprising a curved surface workpiece and the above-mentioned measuring device, wherein the curved surface workpiece is connected to the carrier assembly.

[0032] The curved surface workpiece measurement system also provided by the present invention can improve the accuracy of curved surface workpiece measurement, has broad application prospects, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of an embodiment of a measuring device of the present invention;

[0034] Figure 2 for Figure 1 A schematic diagram of the structure of the measuring device from another perspective;

[0035] Figure 3 for Figure 1 Schematic diagram of the structure of the measuring device shown in other perspectives.

[0036] Description of Reference Numerals

[0037] 100, measuring device; 10, base; 20, bracket assembly; 21, first bracket; 211, first mounting plate; 22, second bracket; 221, third mounting plate; 30, drive assembly; 31, first drive member; 32, second drive member; 40, measuring assembly; 41, first measuring assembly; 411, first sensor; 412, second mounting plate; 42, second measuring assembly; 421, second sensor; 422, fourth mounting plate; 50, counterweight assembly; 51, first counterweight assembly; 52, second counterweight assembly; 60, carrier assembly; 61, first rotating assembly; 611, fifth drive member; 612, first carrier; 62, second rotating assembly; 621, sixth drive member; 622, second carrier; 63, third rotating assembly; 631, seventh drive member; 632, third carrier; 70, first translation assembly; 71, third drive member; 80, second translation assembly; 81, fourth drive member. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0039] In order to solve the technical problem of poor measurement accuracy of the measuring device in the prior art, the present invention provides a measuring device, including a base, a first bracket, a first driving member, a first measuring assembly, a first counterweight and a carrier assembly, wherein the first bracket is connected to the base; the first driving member is connected to the first bracket; the first measuring assembly is connected to the output end of the first driving member, and the first driving member can drive the first measuring assembly to move toward or away from the base; the first counterweight assembly is connected to the bracket and the first measuring assembly, and the first counterweight assembly can apply force to the first measuring assembly to offset part or all of the gravity of the first measuring assembly, thereby reducing the load of the first measuring assembly on the first driving member; the carrier assembly is connected to the base, and the carrier assembly is used to install the workpiece to be measured so as to be measured by the first measuring assembly. The following is a detailed description.

[0040] See also Figure 1 , Figure 1The present invention provides a measuring device 100, which is used to measure parameter information such as the length, width and surface accuracy of a workpiece, and to detect whether the workpiece is qualified by obtaining a plurality of parameter information, thereby controlling the production quality of the workpiece.

[0041] In this embodiment, the measuring device 100 is used to measure the surface accuracy of a workpiece, such as 3D glass, VR glasses, etc.; it can be understood that in other embodiments, the measuring device 100 can also be used to measure other parameters of other workpieces without specific limitation.

[0042] The measuring device 100 includes a base 10, a support assembly 20, a drive assembly 30, a measuring assembly 40, a counterweight assembly 50 and a carrier assembly 60. The support assembly 20 and the carrier assembly 60 are both connected to the base 10, the drive assembly 30 is connected to the support assembly 20 and the measuring assembly 40, and the counterweight assembly 50 is connected to the support assembly 20 and the measuring assembly 40; the base 10 is used to carry the support assembly 20 and the carrier assembly 60, the support assembly 20 is used to carry the drive assembly 30, the measuring assembly 40 and the counterweight assembly 50, the drive assembly 30 provides a power source for the movement of the measuring assembly 40, the measuring assembly 40 is used to measure the parameters of the workpiece, the counterweight assembly 50 is used to reduce the load of the measuring assembly 40 on the drive assembly 30, and the carrier assembly 60 is used to install the workpiece to be measured.

[0043] In the present embodiment, the shape of the base 10 is roughly a rectangular plate, and the rectangular plate-shaped base 10 can relatively evenly arrange the components, thereby ensuring a reasonable spatial arrangement; it can be understood that in other embodiments, the shape of the base 10 can also be other shapes.

[0044] The bracket assembly 20 includes a first bracket 21 and a second bracket 22. The first bracket 21 and the second bracket 22 are both fixedly connected to the base 10. The first bracket 21 and the second bracket 22 are respectively used to carry different measuring components 40, thereby realizing the measurement of multi-dimensional parameter information of the measuring device 100; specifically, the first bracket 21 is fixedly connected to one end of the base 10, and the second bracket 22 is spaced apart and arranged in parallel with the first bracket 21.

[0045] In the present embodiment, the shapes of the first bracket 21 and the second bracket 22 are both gantry-shaped. With this arrangement, the through-hole area surrounded by the first bracket 21 and the through-hole area surrounded by the second bracket 22 can facilitate the installation of the workpiece to be measured on the base 10, and at the same time facilitate the current observation of the measurement situation, which is conducive to use; it can be understood that in other embodiments, the shapes of the first bracket 21 and the second bracket 22 may also be different, and the first bracket 21 and the second bracket 22 may also be other regular or irregular shapes.

[0046] In the present embodiment, the first bracket 21 and the base 10, as well as the second bracket 22 and the base 10, are all integrally formed structures. The integral forming can ensure good connection stability between the first bracket 21, the second bracket 22 and the base 10, and prevent displacement deviation caused by the shaking of the first bracket 21 and the second bracket 22 relative to the base 10, and further avoid the measurement deviation caused by the shaking, thereby helping to improve the measurement accuracy; it can be understood that in other embodiments, the first bracket 21 and the base 10, as well as the second bracket 22 and the base 10 can also be fixed by other methods such as welding, as long as the above-mentioned effect can be achieved.

[0047] The driving component 30 includes a first driving member 31 and a second driving member 32. The first driving member 31 is fixedly connected to the first bracket 21, and the second driving member 32 is fixedly connected to the second bracket 22. The first driving member 31 and the second driving member 32 respectively provide power for different measuring components 40 to realize the movement of the measuring component 40 relative to the carrier component 60, thereby completing the measurement device 100 to obtain different parameter information of the workpiece.

[0048] Specifically, a first mounting plate 211 is further provided between the first driving member 31 and the first bracket 21, and the first mounting plate 211 is fixedly connected to the first bracket 21. The first driving member 31 is indirectly connected to the first bracket 21 by being fixedly connected to the first mounting plate 211. The provision of the first mounting plate 211 can expand the connection range of the first bracket 21, prevent the components from being directly connected to the first bracket 21 and affecting the transmission due to being too compact, and further ensure that the measuring device 100 can work normally. Similarly, the second driving member 32 is further provided with a third mounting plate 221 on the second bracket 22, and the third mounting plate 221 connects the second bracket 22 and the second driving member 32.

[0049] In this embodiment, the first mounting plate 211 and the first bracket 21, and the third mounting plate 221 and the second bracket 22 are fixed by welding, and the first driving member 31 and the first mounting plate 211, and the second driving member 32 and the third mounting plate 221 are fixed by threaded fasteners, thereby ensuring that the first mounting plate 211 and the first bracket 21, the first driving member 31 and the first mounting plate 211, the third mounting plate 221 and the second bracket 22, and the second driving member 32 and the third mounting plate 221 all have good connection stability, which is beneficial for the measuring device 100 to reduce measurement errors and thereby improve the measurement accuracy of the measuring device 100; it can be understood that in other embodiments, the various connecting parts may also adopt other connection methods as long as the above-mentioned purpose can be achieved.

[0050] The measuring assembly 40 includes a first measuring assembly 41 and a second measuring assembly 42 . The first measuring assembly 41 is connected to the first driving member 31 , and the second measuring assembly 42 is connected to the second driving member 32 . The first measuring assembly 41 and the second measuring assembly 42 respectively measure different parameter information of the workpiece.

[0051] The first measuring component 41 includes a first sensor 411, which is fixedly connected to the output end of the first driving member 31. The first driving member 31 can drive the first sensor 411 to move toward or away from the base 10, thereby adjusting the measuring position of the first sensor 411, thereby facilitating the measuring device 100 to perform precise measurement.

[0052] Specifically, a second mounting plate 412 is further provided between the first driving member 31 and the first sensor 411. The second mounting plate 412 is connected to the output end of the first driving member 31. The first sensor 411 is fixedly arranged on the second mounting plate 412. The arrangement of the second mounting plate 412 can break the connection limitation of the first driving member 31 directly connecting to the first sensor 411. Compared with the first sensor 411 directly connecting to the first driving member 31, such an arrangement can enhance the connection stability of the first sensor 411 relative to the first driving member 31, which is conducive to stable transmission and further conducive to accurate measurement of the measuring device 100.

[0053] In this embodiment, the first driving member 31 is a cylinder, and the output force of the cylinder is relatively large, thereby being able to improve the movement reliability of the first sensor 411, which is beneficial to the measurement of the measuring device 100; it can be understood that in its embodiment, the first driving member 31 can also be selected as other power sources such as a motor, as long as the first driving member 31 can drive the first sensor 411 to move stably.

[0054] The second measuring component 42 includes a second sensor 421, which is fixedly connected to the output end of the second driving member 32. The second driving member 32 can drive the second sensor 421 to move toward or away from the base 10, thereby adjusting the measuring position of the second sensor 421, and also facilitating the measuring device 100 to perform precise measurement.

[0055] Specifically, a fourth mounting plate 422 is provided between the second driving member 32 and the second sensor 421. The fourth mounting plate 422 is connected to the output end of the second driving member 32. The second sensor 421 is fixedly arranged on the fourth mounting plate 422. The setting of the fourth mounting plate 422 can also enhance the connection stability of the first sensor 411 relative to the first driving member 31, which is beneficial to the accurate measurement of the measuring device 100.

[0056] In this embodiment, the second driving member 32 is a cylinder; it can be understood that in its embodiment, the second driving member 32 can also be selected as other power sources such as a motor.

[0057] It is worth noting that the first sensor 411 and the second sensor 421 may be measuring devices such as displacement sensors and chromatographs, and the first sensor 411 and the second sensor 421 may be the same or different sensors.

[0058] The counterweight assembly 50 includes a first counterweight assembly 51 and a second counterweight assembly 52. ​​The first counterweight assembly 51 is connected to the first bracket 21 and the first sensor 411. The first counterweight assembly 51 can apply force to the first sensor 411 to offset part or all of the gravity of the first measuring assembly 41, thereby reducing the load of the first measuring assembly 41 on the first driving member 31, so that the first driving member 31 can accurately drive the first sensor 411 to move to the expected position, preventing displacement deviation caused by excessive gravity of the first measuring assembly 41, thereby facilitating improving the measurement accuracy of the measuring device 100.

[0059] Similarly, the second counterweight assembly 52 is connected to the third mounting plate 221 and the second sensor 421. The second counterweight assembly 52 can apply force to the second sensor 421 to offset part or all of the gravity of the second measuring assembly 42, thereby reducing the load of the second measuring assembly 42 on the second driving member 32, so that the second driving member 32 can accurately drive the second sensor 421 to move to the expected position, preventing displacement deviation caused by excessive gravity of the second measuring assembly 42, which is beneficial to improving the measurement accuracy of the measuring device 100.

[0060] The number of first counterweight assemblies 51 and the number of second counterweight assemblies 52 are both at least two. At least two first counterweight assemblies 51 are respectively arranged on both sides of the first driving member 31 and are arranged parallel to each other, and are both connected to the first sensor 411. At least two second counterweight assemblies 52 are respectively arranged on both sides of the second driving member 32 and are arranged parallel to each other, and are both connected to the second sensor 421. Therefore, multiple first counterweight assemblies 51 and multiple second counterweight assemblies 52 can better offset the weight of the first measuring assembly 41 and the second measuring assembly 42, respectively, to prevent the expected effect from being not achieved due to the first measuring assembly 41 and the second measuring assembly 42 being too heavy, which is beneficial for the first driving member 31 and the second driving member 32 to stably drive the first sensor 411 and the second sensor 421 to move, respectively, and further facilitates the precise measurement of the measuring device 100.

[0061] In the present embodiment, the first counterweight assembly 51 is a cylinder, specifically a low-friction cylinder, which is fixedly connected to the first bracket 21, and the piston rod of the cylinder is connected to the first sensor 411. The cylinder can apply a pulling force to the first sensor 411 through the piston rod to offset part or all of the gravity of the first measuring assembly 41. The low-friction cylinder has the advantages of small sliding resistance and stable transmission, which is beneficial to drive the first sensor 411 to move to the expected position, reduce displacement deviation, and facilitate measurement; it can be understood that in other embodiments, according to different working conditions, the first counterweight assembly 51 can also be other types of counterweight parts. For example, the first counterweight assembly 51 is selected as an elastic part, and the elastic part applies a pulling force to the first measuring assembly 41, which can also offset part or all of the gravity of the first measuring assembly 41.

[0062] In this embodiment, the second counterweight assembly 52 is also a low-friction cylinder; it can be understood that in other embodiments, the second counterweight assembly 52 can also be other counterweight components.

[0063] It is worth noting that the first counterweight assembly 51 offsets part or all of the gravity of the first measuring assembly 41 by applying force to the first sensor 411, which refers to offsetting the common gravity of the first sensor 411 and the second mounting plate 412. Similarly, the second counterweight assembly 52 offsets the common gravity of the second sensor 421 and the fourth mounting plate 422 by applying force to the second sensor 421. In other embodiments, due to the different components of the measuring assembly 40, what is offset is part or all of the gravity of the total weight of the measuring assembly 40, thereby achieving the purpose of precise displacement and accurate measurement.

[0064] See also Figure 2 and Figure 3 , Figure 2 for Figure 1 A schematic diagram of the structure of the measuring device from another perspective; Figure 3 for Figure 1 The measuring device 100 also includes a first translation assembly 70 and a second translation assembly 80, wherein the first translation assembly 70 is connected to the base 10, the second translation assembly 80 is connected to the first translation assembly 70, and the carrier assembly 60 is connected to the second translation assembly 80; the first translation assembly 70 and the second translation assembly 80 are used to drive the carrier assembly 60 to move relative to the base 10, thereby adjusting the position of the workpiece relative to the first measuring assembly 41 and the second measuring assembly 42, so as to facilitate accurate measurement.

[0065] The first translation assembly 70 includes a third driving member 71, and the second translation assembly 80 includes a fourth driving member 81. The third driving member 71 is fixedly connected to the base 10, and the output end of the third driving member 71 is connected to the fourth driving member 81. The third driving member 71 can drive the fourth driving member 81 to move along a first preset direction parallel to the base 10; the output end of the fourth driving member 81 is connected to the carrier assembly 60, and the fourth driving member 81 can drive the carrier assembly 60 to move along a second preset direction parallel to the base 10, and the first preset direction is set at an angle to the second preset direction, so that the carrier assembly 60 can move in the first preset direction and the second preset direction, and then adjust the position relative to the first measuring assembly 41 and the second measuring assembly 42, so that the workpiece to be measured on the carrier assembly 60 can be better measured.

[0066] In this embodiment, the first preset direction is perpendicular to the first bracket 21, and the second preset direction is perpendicular to the first preset direction; it can be understood that in other embodiments, the first preset direction and the second preset direction may also have other angles.

[0067] The carrier assembly 60 includes a first rotating assembly 61, a second rotating assembly 62 and a third rotating assembly 63. The first rotating assembly 61 is connected to the fourth driving member 81, the second rotating assembly 62 is connected to the first rotating assembly 61, and the third rotating assembly 63 is fixedly connected to the second rotating assembly 62 and is used to install the workpiece to be measured; the first rotating assembly 61 is vertically arranged relative to the base 10, and the first rotating assembly 61 can rotate and drive the second rotating assembly 62 to rotate; the second rotating assembly 62 can rotate around a direction perpendicular to the first rotating assembly 61, and drive the third rotating assembly 63 to adjust the angle relative to the first rotating assembly 61; the third rotating assembly 63 can rotate and drive the workpiece to be measured to rotate.

[0068] Specifically, the first rotating assembly 61 includes a fifth driving member 611 and a first carrier 612. The fifth driving member 611 is fixedly connected to the output end of the fourth driving member 81. The output end of the fifth driving member 611 is fixedly connected to the first carrier 612. The side wall of the first carrier 612 is perpendicular to the base 10. The fifth driving member 611 drives the first carrier 612 to rotate. In this embodiment, the shape of the first carrier 612 is roughly U-shaped; it can be understood that in other embodiments, the first carrier 612 can also be other shapes.

[0069] The second rotating assembly 62 includes a sixth driving member 621 and a second carrier 622. The sixth driving member 621 is fixedly connected to the side wall of the first carrier 612. The second carrier 622 is disposed between the sixth driving member 621 and the first carrier 612. One side of the second carrier 622 is connected to the output end of the sixth driving member 621. The other side of the second carrier 622 is movably connected to the first carrier 612, so that the sixth driving member 621 can drive the second carrier 622 to rotate around the side wall of the first carrier 612. In this embodiment, the shape of the second carrier 622 is also roughly U-shaped; it can be understood that in other embodiments, the second carrier 622 can also be other shapes.

[0070] The third rotating assembly 63 includes a seventh driving member 631 and a third carrier 632. The seventh driving member 631 is fixedly connected to the bottom wall of the second carrier 622. The output end of the seventh driving member 631 is connected to the third carrier 632. The third carrier 632 is used to mount the workpiece to be measured. The seventh driving member 631 can drive the third carrier 632 to rotate so as to adjust the angle relative to the measuring assembly 40. In this embodiment, the third carrier 632 is a carrier table; it can be understood that in other embodiments, the third carrier 632 can also be other shapes.

[0071] The fifth driving member 611 in the carrier assembly can drive the first carrier 612 to rotate, and the first carrier 612 can drive the second carrier 622 to rotate. Since the sixth carrier can further drive the second carrier 622 to rotate around the side wall of the first carrier 612, the third carrier 632 is fixedly connected to the bottom wall of the second carrier 622 and can rotate, so that the workpiece to be measured on the third carrier 632 can achieve multi-degree-of-freedom rotation adjustment, so that the measuring component 40 can measure the workpiece to be measured at a suitable angle. At the same time, the carrier assembly 60 can be translated relative to the measuring assembly 40 through the first translation assembly 70 and the second translation assembly 80, thereby adjusting the position of the workpiece to be measured relative to the measuring assembly 40. The measuring assembly 40 only needs to move in the direction toward or away from the base to achieve the measurement operation, avoiding the measurement assembly 40 from moving in other directions, eliminating deviations in other directions, and further facilitating the accurate measurement of the measuring device 100.

[0072] In this embodiment, the fifth driving member 611, the sixth driving member 621 and the seventh driving member 631 are all selected as DD direct drive motors. The output torque of the DD direct drive motor is large, and at the same time, the reverse clearance and other problems caused by mechanical transmission are eliminated, which is further conducive to stable transmission, thereby improving the measurement accuracy of the measuring device 100; it can be understood that in other embodiments, the fifth driving member 611, the sixth driving member 621 and the seventh driving member 631 can also be selected as other forms of power sources, as long as the purpose of stable transmission can be achieved.

[0073] In the measuring device provided by the present invention, the first driving member can drive the first measuring component to move relative to the carrier component on the base, so that the first measuring component can measure the workpiece to be measured, and the first counterweight component offsets part or all of the gravity of the first measuring component by applying force to the first measuring component, thereby reducing the load of the first measuring component on the first driving member, so that the first driving member can accurately drive the first measuring component to move to the expected position, preventing displacement deviation caused by excessive gravity of the first measuring component, which is beneficial to improving the measurement accuracy of the measuring device.

[0074] The present invention further provides a curved surface workpiece measurement system, comprising a curved surface workpiece and the above-mentioned measurement device 100 , wherein the curved surface workpiece is connected to a carrier assembly 60 .

[0075] The curved surface workpiece measurement system also provided by the present invention can improve the accuracy of curved surface workpiece measurement, has broad application prospects, and is easy to use.

[0076] In addition, in the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", "stacked" and the like should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0077] 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A measuring device, characterized in that: include: Base; A first bracket, the first bracket is in a gantry shape, and the first bracket is connected to the base; a first driving member, the first driving member being connected to the first bracket; a first measuring component, the first measuring component is connected to an output end of the first driving member, and the first driving member is capable of driving the first measuring component to move toward or away from the base; a first counterweight assembly, wherein the first counterweight assembly is connected to the first bracket and the first measuring assembly, and the first counterweight assembly can apply force to the first measuring assembly to offset part or all of the gravity of the first measuring assembly, thereby reducing the load of the first measuring assembly on the first driving member; A carrier assembly, the carrier assembly is connected to the base, and the carrier assembly is used to mount a workpiece to be measured so as to be measured by the first measuring assembly; Wherein, the first counterweight assembly is a cylinder, the cylinder is fixedly connected to the first bracket, the piston rod of the cylinder is connected to the first measuring assembly, and the cylinder can apply a pulling force to the first measuring assembly through the piston rod to offset part or all of the gravity of the first measuring assembly.

2. The measuring device according to claim 1, characterized in that The number of the first counterweight assemblies is at least two, and the at least two first counterweight assemblies are respectively located on both sides of the first driving member and are arranged parallel to each other. The at least two first counterweight assemblies are both connected to the first measuring assembly.

3. The measuring device according to claim 1, characterized in that The measuring device further comprises a first mounting plate and a second mounting plate, the first mounting plate being fixedly connected to the first bracket, and the first counterweight assembly and the first driving member being both arranged on the first mounting plate; The second mounting plate is connected to the output end of the first driving member and the first counterweight assembly. The first driving member drives the second mounting plate to drive the first measuring assembly to move toward or away from the base. The first counterweight assembly can apply a pulling force to the second mounting plate to offset part or all of the gravity of the first counterweight assembly and the second mounting plate.

4. The measuring device according to claim 1, characterized in that The measuring device also includes: A second bracket, the second bracket is connected to the base and is spaced apart from and arranged in parallel with the first bracket; a second driving member, the second driving member being connected to the second bracket; A second measuring component, the second measuring component is connected to the output end of the second driving member, and the second driving member can drive the second measuring component to move toward or away from the base; the second measuring component and the first measuring component can be respectively located on both sides of the carrier component, and the second measuring component and the first measuring component can jointly measure a workpiece installed on the carrier component.

5. The measuring device according to claim 1, characterized in that The measuring device further comprises a first translation assembly and a second translation assembly, wherein the first translation assembly comprises a third driving member, and the second translation assembly comprises a fourth driving member; The third driving member is fixedly connected to the base, an output end of the third driving member is connected to the fourth driving member, and the third driving member can drive the fourth driving member to move along a first preset direction parallel to the base; The output end of the fourth driving member is connected to the carrier assembly, and the fourth driving member can drive the carrier assembly to move along a second preset direction parallel to the base, and the first preset direction is set at an angle to the second preset direction.

6. The measuring device according to claim 5, characterized in that The carrier assembly includes a first rotating assembly, a second rotating assembly and a third rotating assembly, wherein the first rotating assembly is connected to the fourth driving member, the second rotating assembly is connected to the first rotating assembly, and the third rotating assembly is fixedly connected to the second rotating assembly and is used to mount the workpiece to be measured; The first rotating component is vertically arranged relative to the base, and the first rotating component can rotate on its own and drive the second rotating component to rotate; the second rotating component can rotate in a direction perpendicular to the first rotating component, and drive the third rotating component to adjust an angle relative to the first rotating component; the third rotating component can rotate on its own and drive the workpiece to be measured to rotate.

7. The measuring device according to claim 6, characterized in that The first rotating assembly includes a fifth driving member and a first carrier, the fifth driving member is fixedly connected to the output end of the fourth driving member, the output end of the fifth driving member is fixedly connected to the first carrier, the side wall of the first carrier is perpendicular to the base, and the fifth driving member can drive the first carrier to rotate; The second rotating assembly includes a sixth driving member and a second carrier, wherein the sixth driving member is fixedly connected to the side wall of the first carrier, and the second carrier is disposed between the sixth driving member and the first carrier, and one side of the second carrier is connected to the output end of the sixth driving member, and the other side is movably connected to the first carrier, and the sixth driving member can drive the second carrier to rotate relative to the first carrier; The third rotating assembly includes a seventh driving member and a third carrier. The third carrier is used to mount the workpiece to be measured. The seventh driving member is fixedly connected to the bottom wall of the second carrier. The output end of the seventh driving member is connected to the third carrier. The seventh driving member can drive the third carrier to rotate.

8. The measuring device according to claim 7, characterized in that The fifth driving member is a DD direct drive motor; and / or, The sixth driving element is a DD direct drive motor; and / or, The seventh driving component is a DD direct drive motor.

9. A curved workpiece measurement system, comprising a curved workpiece, characterized in that: The curved workpiece measurement system further comprises a measuring device as claimed in any one of claims 1 to 8, wherein the curved workpiece is connected to the carrier assembly.

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