High-precision hinge torsion testing device

Abstract

The utility model discloses a high-precision hinge torsion testing device, which comprises a machine table provided with a carrying seat used for placing a hinge to be detected; the mounting bracket is connected to the machine table and is used for mounting the X-axis servo driving module; the Z-axis servo driving module is mounted on the X-axis servo driving module; the torsion testing mechanism comprises a driving motor, a torsion sensor, a driving rod and a clamping unit, the driving motor is connected to the Z-axis servo driving module, the torsion sensor is used for connecting the driving motor and the driving rod, and the clamping unit is installed on the driving rod to clamp the first support or the second support of the hinge. The device is small in overall size, and the installation space is saved; overall cables are reduced, and production reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automation equipment, in particular to a high-precision hinge torque testing device. Background Art

[0002] The automobile hood hinge is a key component for connecting the hood to the vehicle body, which generally includes a first bracket, a second bracket, and a torsion spring ( Figure 1 A car hood hinge is shown in Figure 1). During the manufacturing process of the hinge, the torque of the hinge needs to be tested to ensure that the torque of the hinge can meet the design requirements.

[0003] The existing torque test device usually has a separate clamping mechanism and a power part, and the mechanism, gas circuit and circuit are complex, which requires a large layout space. When the installation space of the test device is small, it is easy for the various mechanisms to interfere with each other; at the same time, there are also situations where the line layout is difficult and the number of cables is large, which easily leads to problems such as large line motion loss, poor contact, and low gas line reliability. Utility Model Content

[0004] In order to overcome the defects in the prior art, an embodiment of the utility model provides a high-precision hinge torque testing device, which is used to solve at least one of the above problems.

[0005] The embodiment of the present application discloses: a high-precision hinge torque test device, which is used to perform torque test on a hinge, wherein the hinge comprises a first bracket and a second bracket hinged to the first bracket through a torsion spring, and the high-precision hinge torque test device comprises:

[0006] A machine platform, wherein a carrier for placing the hinge to be tested is provided on the machine platform;

[0007] A mounting bracket, connected to the machine platform, for mounting an X-axis servo drive module;

[0008] A Z-axis servo drive module is installed on the X-axis servo drive module;

[0009] The torque testing mechanism includes a driving motor, a torque sensor, a driving rod and a clamping unit, wherein the driving motor is connected to the Z-axis servo driving module, the torque sensor is used to connect the driving motor and the driving rod, and the clamping unit is installed on the driving rod to clamp the first bracket or the second bracket of the hinge.

[0010] Specifically, a positioning structure for positioning the first bracket of the hinge is provided on the carrier.

[0011] Specifically, the torque testing mechanism further includes a first coupling and a second coupling, the torque sensor is connected to the output shaft of the drive motor through the first coupling, and the torque sensor is connected to the drive rod through the second coupling.

[0012] Specifically, the torque testing mechanism further includes a first mounting plate, the first mounting plate is connected to the output shaft of the Z-axis servo drive module, and the drive motor and the torque sensor are respectively connected to the first mounting plate.

[0013] Specifically, the torque testing mechanism further includes a first bearing fixedly connected to the first mounting plate, and the driving rod is inserted into the first bearing to be connected to the inner ring of the first bearing.

[0014] Specifically, the clamping unit includes a second mounting plate, two connecting rods and two rolling bearings. The second mounting plate is fixed on the driving rod, the two connecting rods are installed on the second mounting plate, and the two rolling bearings are respectively installed on the two connecting rods. The two rolling bearings jointly clamp the first bracket or the second bracket of the hinge.

[0015] The utility model has at least the following beneficial effects: the clamping unit of the high-precision hinge torque testing device of this embodiment is arranged below the driving motor and is driven by the driving motor to realize movement and clamping actions, which effectively reduces the overall volume of the device and saves installation space. The device has a simple structure and can avoid interference between various mechanisms. At the same time, compared with the traditional three-axis positioning torque detection device, the device reduces the layout of the air circuit and the circuit, and the overall cable is reduced by 30%, thereby improving production stability and reliability.

[0016] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the hinge in the embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of a high-precision hinge torque testing device in an embodiment of the utility model;

[0020] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0021] Figure 4 It is a structural schematic diagram of the torque testing mechanism (excluding the first bearing) in the embodiment of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the torque testing mechanism (including the first bearing) in the embodiment of the utility model.

[0023] The figure marks of the above drawings are: 1. carrier; 11. positioning structure; 2. mounting bracket; 3. X-axis servo drive module; 4. Z-axis servo drive module; 5. torque testing mechanism; 51. drive motor; 52. torque sensor; 53. drive rod; 54. clamping unit; 541. second mounting plate; 542. connecting rod; 543. rolling bearing; 55. first coupling; 56. second coupling; 57. first mounting plate; 58. first bearing; 10. first bracket; 20. second bracket; 30. torsion spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "fixed", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "below" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0028] In addition, the terms "first", "second", etc. are only used to distinguish in description and have no special meaning.

[0029] The high-precision hinge torque testing device of this embodiment can be used to perform torque testing on hinges. Figure 1 As shown, the hinge described in this embodiment generally includes a first bracket 10 and a second bracket 20 hinged to the first bracket 10 via a torsion spring 30 .

[0030] like Figures 2 to 4 As shown, the high-precision hinge torque testing device of this embodiment mainly includes a machine platform, a mounting bracket 2, an X-axis servo drive module 3, a Z-axis servo drive module 4 and a torque testing mechanism 5. Among them, the machine is used to support the other components of the device mentioned above, and a carrier 1 for placing the hinge to be tested is provided on the machine; the mounting bracket 2 is connected to the machine and is located next to the carrier 1, and is used to install the X-axis servo drive module 3, and the X-axis servo drive module 3 is used to drive the torque testing mechanism 5 to move along the X-axis direction; the Z-axis servo drive module 4 is installed on the X-axis servo drive module 3, and is used to drive the torque testing mechanism 5 to move along the Z-axis direction; the torque testing mechanism 5 mainly includes a driving motor 51, a torque sensor 52, a driving rod 53 and a clamping unit 54, the driving motor 51 is connected to the Z-axis servo drive module 4, the torque sensor 52 is connected to the output shaft of the driving motor 51, and the end of the torque sensor 52 facing away from the driving motor 51 is connected to the driving rod 53, and the clamping unit 54 is installed on the driving rod 53 to clamp the first bracket 10 or the second bracket 20 of the hinge.

[0031] Through the above structure, the clamping unit 54 of the high-precision hinge torque testing device of this embodiment is arranged below the driving motor 51 and is driven by the driving motor 51 to realize movement and clamping actions, which effectively reduces the overall volume of the device and saves installation space. The device has a simple structure and can avoid interference between various mechanisms. At the same time, compared with the traditional three-axis positioning torque detection device, the device reduces the layout of the air circuit and the circuit, and the overall cable is reduced by 30%, thereby improving production stability and reliability.

[0032] Specifically, if Figure 3 As shown, the carrier 1 is provided with some positioning structures 11, and the shapes and positions of these positioning structures 11 are similar to the structures of the hinge first bracket 10. Thus, when the hinge is subjected to a torque test, the hinge first bracket 10 can be placed on the carrier 1, and the first bracket 10 can be fixed by the positioning structures 11, and then the second bracket 20 can be clamped by the clamping unit 54.

[0033] like Figure 4 As shown, the torque testing mechanism 5 of this embodiment further includes a first coupling 55 and a second coupling 56. The first coupling 55 is used to connect the torque sensor 52 and the output shaft of the drive motor 51, and the second coupling 56 is used to connect the torque sensor 52 and the drive rod 53. The first coupling 55 and the second coupling 56 can improve the stability of the connection between the torque sensor 52 and the drive motor 51 and the drive rod 53.

[0034] like Figure 4 As shown, the torque test mechanism 5 of this embodiment further includes a first mounting plate 57, which is connected to the output shaft of the Z-axis servo drive module 4, and the drive motor 51 and the torque sensor 52 are respectively connected to the first mounting plate 57, which can reduce the swing amplitude of the drive motor 51 and the torque sensor 52 during the test, thereby improving the test accuracy. Figure 5 As shown, the torque testing mechanism 5 may further include a first bearing 58 fixedly connected to the first mounting plate 57, and the first bearing 58 is used to connect with the driving rod 53. Specifically, the driving rod 53 is inserted into the first bearing 58 to connect with its inner ring, which can improve the stability of the movement of the driving rod 53 and prevent the driving rod 53 from bouncing and affecting the accuracy of the torque sensor 52 in collecting torque data.

[0035] like Figure 4As shown, the clamping unit 54 of this embodiment includes a second mounting plate 541, two connecting rods 542 and two rolling bearings 543. The second mounting plate 541 is fixedly connected to the driving rod 53, the two connecting rods 542 are mounted on the second mounting plate 541, and the two rolling bearings 543 are respectively mounted on the two connecting rods 542. The two rolling bearings 543 cooperate to form a pair of clamping claws for clamping the second bracket 20 of the hinge. During the test, as the position of the hinge changes, the rolling bearing 543 can adjust its positional relationship with the second bracket 20 of the hinge by rotating itself, so as to prevent the second bracket 20 from being deformed due to excessive clamping.

[0036] To summarize, the working process of the high-precision hinge torque testing device of this embodiment is as follows: after the first bracket 10 of the hinge is placed on the carrier and positioned, the X-axis servo drive module 3 drives the torque testing mechanism 5 to move along the X-axis direction to above the second bracket 20 of the hinge, and the Z-axis servo drive module 4 drives the torque testing mechanism 5 to move along the Z-axis direction to the two rolling bearings 543 respectively located on both sides of the second bracket 20, and then the drive motor 51 is started, and the drive rod 53 rotates with the output shaft of the drive motor 51, thereby driving the second mounting plate 541 to rotate, and the second bracket 20 of the hinge rotates under the clamping of the two rolling bearings 543, and as the hinge opens and closes, the torque sensor 52 collects torque data.

[0037] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A high-precision hinge torque test device, used for performing torque test on a hinge, wherein the hinge comprises a first bracket and a second bracket hinged to the first bracket via a torsion spring, characterized in that: include: A machine platform, wherein a carrier for placing the hinge to be tested is provided on the machine platform; A mounting bracket, connected to the machine platform, for mounting an X-axis servo drive module; A Z-axis servo drive module is installed on the X-axis servo drive module; The torque testing mechanism includes a driving motor, a torque sensor, a driving rod and a clamping unit, wherein the driving motor is connected to the Z-axis servo driving module, the torque sensor is used to connect the driving motor and the driving rod, and the clamping unit is installed on the driving rod to clamp the first bracket or the second bracket of the hinge.

2. The high-precision hinge torque testing device according to claim 1, characterized in that: The carrier is provided with a positioning structure for positioning the first bracket of the hinge.

3. The high-precision hinge torque testing device according to claim 1, characterized in that: The torque testing mechanism further includes a first coupling and a second coupling. The torque sensor is connected to the output shaft of the driving motor via the first coupling, and the torque sensor is connected to the driving rod via the second coupling.

4. The high-precision hinge torque testing device according to claim 1, characterized in that: The torque testing mechanism also includes a first mounting plate, the first mounting plate is connected to the output shaft of the Z-axis servo drive module, and the drive motor and the torque sensor are respectively connected to the first mounting plate.

5. The high-precision hinge torque testing device according to claim 4, characterized in that: The torque testing mechanism also includes a first bearing fixedly connected to the first mounting plate, and the driving rod is inserted into the first bearing to be connected to the inner ring of the first bearing.

6. The high-precision hinge torque testing device according to claim 1, characterized in that: The clamping unit includes a second mounting plate, two connecting rods and two rolling bearings. The second mounting plate is fixed on the driving rod, the two connecting rods are mounted on the second mounting plate, the two rolling bearings are respectively mounted on the two connecting rods, and the two rolling bearings jointly clamp the first bracket or the second bracket of the hinge.

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