Multi-degree-of-freedom high-precision fine-tuning micro motor testing device

Abstract

A multi-degree-of-freedom high-precision fine-tuning micro motor testing device belongs to the field of motors and comprises an instrument fixing mechanism, a transmission shaft adjusting mechanism and a motor fixing mechanism which are sequentially arranged in the X-axis direction, the instrument fixing mechanism is used for fixing a testing instrument, and the transmission shaft adjusting mechanism comprises a transmission shaft arranged in the X-axis direction. The transmission shaft adjusting mechanism is used for adjusting the positions of the transmission shaft in the X-axis direction, the Y-axis direction and the Z-axis direction, and the motor fixing mechanism is used for fixing the tested micro motor and adjusting the positions of the micro motor in the Y-axis direction and the Z-axis direction. Wherein the adjustment in each axial direction is mainly realized by arranging a fine adjustment bolt in a corresponding direction, the fine adjustment bolt can be provided with two sections of threads with the same rotation direction and different screw pitches, and high-precision fine adjustment can be realized through a difference value between different screw pitches. The micro motor testing device can meet the testing requirements of different types of micro motors, and especially can ensure the coaxiality precision of a testing instrument and the tested micro motor.

Description

Technical Field

[0001] The present application relates to the field of motors, and particularly to a micro-motor testing device with multi-degree-of-freedom high-precision fine adjustment. Background Art

[0002] At present, the motor testing equipment on the market often only applies to the performance and durability testing of medium-sized or large-sized motors, and cannot be compatible with the testing requirements of micro-motors. For example, the traditional conventional motor types include low inertia, medium inertia, and high inertia, and the test items include back electromotive force, cogging torque, etc. The structure and testing accuracy of traditional motor testing equipment usually cannot be compatible with micro-motors, so the testing requirements of different types of micro-motors cannot be met.

[0003] Although some traditional motor testing equipment can perform micro-motor testing, there are still the following disadvantages: due to the machining accuracy of parts and the combined error of assembly, the coaxiality accuracy between the testing instrument and the measured micro-motor is poor, that is, the coaxiality accuracy of the testing mechanism in these motor testing equipment is insufficient. For scenarios with low testing accuracy requirements, the impact of insufficient testing mechanism accuracy on the test can be compensated by software control to meet the testing requirements. However, for scenarios with extremely high testing requirements, such as the no-load current being less than 1A and the rotational speed exceeding 10,000 rmp, these motor testing equipment cannot meet the requirements. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a micro-motor testing device with multi-degree-of-freedom high-precision fine adjustment, which can meet the testing requirements of different types of micro-motors, and in particular can ensure the coaxiality accuracy between the testing instrument and the measured micro-motor.

[0005] The present application provides a micro-motor testing device with multi-degree-of-freedom high-precision fine adjustment, including an instrument fixing mechanism, a transmission shaft adjusting mechanism, and a motor fixing mechanism arranged in sequence along the X-axis direction; the instrument fixing mechanism is used to fix the testing instruments used when testing the micro-motor; the transmission shaft adjusting mechanism includes a transmission shaft assembly and a first Y-axis adjusting assembly, an X-axis adjusting plate, and a first Z-axis adjusting assembly that are in transmission connection with the transmission shaft assembly. The transmission shaft assembly includes a transmission shaft for connecting the testing instrument and the micro-motor. The first Y-axis adjusting assembly includes a first Y-axis fine adjustment bolt for adjusting the position of the transmission shaft in the Y-axis direction. The X-axis adjusting plate is used to adjust the position of the transmission shaft in the X-axis direction. The first Z-axis adjusting assembly includes a first Z-axis fine adjustment bolt for adjusting the position of the transmission shaft in the Z-axis direction; the motor fixing mechanism includes a motor fixing assembly and a second Z-axis adjusting assembly and a second Y-axis adjusting assembly that are in transmission connection with the motor fixing assembly. The motor fixing assembly is used to fix the micro-motor. The second Z-axis adjusting assembly includes a second Z-axis fine adjustment bolt for adjusting the position of the micro-motor in the Z-axis direction. The second Y-axis adjusting assembly includes a second Y-axis fine adjustment bolt for adjusting the position of the micro-motor in the Y-axis direction.

[0006] In some alternative embodiments, the instrument fixing mechanism includes a first base plate, a support seat, and a side stop member arranged on the first base plate. The support seat is used to mount the testing instrument, and the side stop member is used to limit the movement of the testing instrument in a direction perpendicular to the Z-axis.

[0007] In some alternative embodiments, the first Y-axis adjusting assembly further includes a second base plate, a Y-axis adjusting plate, a first Y-axis bolt fixing seat, and a Y-axis bolt adjusting seat. The Y-axis adjusting plate and the first Y-axis bolt fixing seat are mounted on the second base plate along the Y-axis direction. The Y-axis bolt adjusting seat is mounted on the Y-axis adjusting plate. The first Y-axis fine adjustment bolt is threadedly connected to the first Y-axis bolt fixing seat along the Y-axis direction. The head end of the first Y-axis fine adjustment bolt faces away from the Y-axis bolt adjusting seat, and the tail end is threadedly connected to the Y-axis bolt adjusting seat.

[0008] In some alternative embodiments, the X-axis adjusting plate is mounted on the Y-axis adjusting plate. The first Z-axis adjusting assembly is arranged on the X-axis adjusting plate, and the transmission shaft assembly is arranged on the first Z-axis adjusting assembly.

[0009] In some alternative embodiments, the first Z-axis adjustment assembly further includes a first Z-axis support base, a first Z-axis adjustment plate, and a Z-axis bolt fixing base. The first Z-axis adjustment plate is mounted on the first Z-axis support base along the Z-axis direction. The Z-axis bolt fixing base is mounted on the top of the first Z-axis support base. The first Z-axis fine adjustment bolt is threadedly connected to the first Z-axis fine adjustment bolt along the Z-axis direction. The head end of the first Z-axis fine adjustment bolt faces upward, and the tail end faces downward and is threadedly connected to the Z-axis bolt fixing base. The transmission shaft assembly is disposed on the first Z-axis adjustment plate and passes through the first Z-axis support base in the X-axis direction.

[0010] In some alternative embodiments, the transmission shaft assembly further includes a flange hollow shaft and a bearing. The flange hollow shaft is mounted on the first Z-axis adjustment plate along the X-axis direction. The transmission shaft is disposed in the flange hollow shaft and is rotatably connected to the inner wall of the flange hollow shaft through the bearing.

[0011] In some alternative embodiments, the motor fixing assembly includes a base, a lower fixing block, an upper fixing block, a fixing bolt, and a locking nut. The lower fixing block is mounted on the base. The upper fixing block is disposed above the lower fixing block and is connected to the lower fixing block through the fixing bolt. Oppositely arranged motor card slots for fixing the micro motor and penetrating in the X-axis direction are provided on the bottom surface of the upper fixing block and the top surface of the lower fixing block. The locking nut is connected to the fixing bolt, and the locking nut is used to lock the upper fixing block and the lower fixing block to fix the micro motor.

[0012] In some alternative embodiments, the second Z-axis adjustment assembly further includes a second Z-axis support base, a second Z-axis adjustment plate, a linear bearing, a Z-axis guide shaft, a Z-axis spring, and a locking plate. The second Z-axis support base includes a support plate. The Z-axis adjustment plate is disposed parallel to the upper side of the support plate. A base and a second Y-axis adjustment assembly are mounted on the Z-axis adjustment plate. The second Z-axis fine adjustment bolt is threadedly connected to the support plate along the Z-axis direction. The head end of the second Z-axis fine adjustment bolt faces downward, and the tail end faces upward and is connected to the second Z-axis adjustment plate. The linear bearing is mounted on the support plate. The Z-axis guide shaft is mounted in the linear bearing along the Z-axis direction and is in guiding cooperation with the linear bearing. The upper end of the Z-axis guide shaft is connected to the second Z-axis adjustment plate, and the lower end is provided with a shoulder. The Z-axis spring is sleeved on the Z-axis guide shaft, and both ends respectively abut against the lower end of the linear bearing and the shoulder. The locking plate connects the support plate and the second Z-axis adjustment plate, and the locking plate is used to lock the relative position of the support plate and the second Z-axis adjustment plate in the Z-axis direction.

[0013] In some alternative embodiments, the second Y-axis adjustment assembly further includes a second Y-axis bolt fixing seat, a Y-axis guide shaft, and a Y-axis spring. The second Y-axis bolt fixing seat is mounted on the Z-axis adjustment plate in the Y-axis direction relative to the base. The second Y-axis fine-tuning bolt is threadedly connected to the second Y-axis bolt fixing seat in the Y-axis direction. The head end of the second Y-axis fine-tuning bolt faces away from the base, and the tail end is connected to the base. The Y-axis guide shaft is disposed through the base in the Y-axis direction and is in guiding cooperation with the base. The Y-axis spring is sleeved on the Y-axis guide shaft, and both ends thereof respectively abut against the base and the second Y-axis bolt fixing seat.

[0014] In some alternative embodiments, at least one of the first Y-axis fine-tuning bolt, the second Y-axis fine-tuning bolt, the first Z-axis fine-tuning bolt, and the second Z-axis fine-tuning bolt has two threads with the same helix direction but different pitches.

[0015] The multi-degree-of-freedom high-precision fine-tuning micro-motor testing device provided by the present application can separately and independently install the testing instrument and the micro-motor to be tested through the separately provided instrument fixing mechanism and motor fixing mechanism. Through the degree-of-freedom adjustment in different directions of the transmission shaft adjustment mechanism and the motor fixing mechanism, the coaxiality accuracy of the connection between the testing instrument and the micro-motor can be ensured, and during the testing process, the transmission shaft adjustment mechanism and the motor fixing mechanism can also be fine-tuned to meet the testing requirements, greatly improving the compatibility of the device and the stability and effectiveness of the testing results. In addition, the adjustment function is realized through fine-tuning bolts, which is convenient and fast to operate, and significantly improves the adjustment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of a multi-degree-of-freedom high-precision fine-tuning micro-motor testing device provided by an embodiment of the present application.

[0018] Figure 2 It is a schematic structural diagram of a multi-degree-of-freedom high-precision fine-tuning micro-motor testing device provided by an embodiment of the present application after installing a testing instrument and a micro-motor.

[0019] Figure 3 It is a schematic structural diagram of the instrument fixing mechanism provided by an embodiment of the present application.

[0020] Figure 4Schematic structural diagram of the transmission shaft adjustment mechanism provided by the embodiment of the present application.

[0021] Figure 5 Schematic structural diagram of the transmission shaft adjustment mechanism from another angle provided by the embodiment of the present application.

[0022] Figure 6 Schematic structural diagram of the first Z-axis adjustment plate and the transmission shaft assembly provided by the embodiment of the present application.

[0023] Figure 7 Schematic structural diagram of the motor fixing mechanism provided by the embodiment of the present application.

[0024] Figure 8 Schematic structural diagram of the motor fixing mechanism after hiding part of the motor fixing components provided by the embodiment of the present application.

[0025] Reference numerals: 1, test instrument; 2, micro motor; 100, micro motor test device; 10, instrument fixing mechanism; 11, first base plate; 12, support seat; 13, side stop; 20, transmission shaft adjustment mechanism; 21, first Y-axis adjustment assembly; 211, second base plate; 212, Y-axis adjustment plate; 212A, kidney-shaped hole; 213, first Y-axis bolt fixing seat; 214, Y-axis bolt adjustment seat; 215, first Y-axis fine adjustment bolt; 22, X-axis adjustment plate; 23, first Z-axis adjustment assembly; 231, first Z-axis support seat; 232, first Z-axis adjustment plate; 233, Z-axis bolt fixing seat; 234, first Z-axis fine adjustment bolt; 24, transmission shaft assembly; 241, flange hollow shaft; 242, transmission shaft; 243, bearing; 244, snap ring; 25, connecting sleeve; 30, motor fixing mechanism; 31, motor fixing components; 311, base; 312, lower fixing block; 313, upper fixing block; 314, fixing bolt; 315, locking nut; 316, wire harness bracket; 32, second Z-axis adjustment assembly; 321, second Z-axis support seat; 321A, support plate; 321B, vertical plate; 322, second Z-axis adjustment plate; 323, second Z-axis fine adjustment bolt; 324, linear bearing; 325, Z-axis guide shaft; 325A, shaft shoulder; 326, Z-axis spring; 327, locking plate; 327A, kidney-shaped hole; 33, second Y-axis adjustment assembly; 331, second Y-axis bolt fixing seat; 332, second Y-axis fine adjustment bolt; 333, Y-axis guide shaft; 334, Y-axis spring. Detailed implementation manners

[0026] The following will describe specific embodiments of the present application in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the description of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0027] In the description of the present application, unless otherwise clearly defined and limited, terms such as "connection", "setting", "installation", etc. should be understood in a broad sense. For example, "connection" 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; it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0028] The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "center", "top", "bottom", "inner", "outer", "vertical", "horizontal", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of description and simplification of description, rather than indicating or implying 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 a limitation to the present application.

[0029] Terms such as "first", "second", "third", etc. are only used to distinguish elements with similar attributes, rather than indicating or implying relative importance or a specific order, unless otherwise clearly defined and limited.

[0030] The term "comprising", "including", "having" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including that element.

[0031] The meaning of the term "plurality" is two or more (including two).

[0032] The term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0033] The terms "one embodiment", "as an example", "in one implementation manner", etc. describe that the specific features, structures, materials or characteristics described in connection with the embodiment or example may be included in at least one embodiment or example of the present application. The schematic expressions of such terms do not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Without conflict, the embodiments and features in the embodiments of the present application can be combined in a suitable manner.

[0034] Figure 1 FIG. 5 is a schematic structural diagram of a multi-degree-of-freedom high-precision fine-tuning micro-motor test device 100 provided by an embodiment of the present application. Figure 2 FIG. 7 is a schematic structural diagram of the multi-degree-of-freedom high-precision fine-tuning micro-motor test device 100 after installing a test instrument 1 and a micro-motor 2 provided by an embodiment of the present application.

[0035] Please refer to Figure 1 and Figure 2 An embodiment of the present application provides a multi-degree-of-freedom high-precision fine-tuning micro-motor test device 100. The micro-motor test device 100 includes an instrument fixing mechanism 10, a transmission shaft adjusting mechanism 20, and a motor fixing mechanism 30 arranged in sequence along the X-axis direction.

[0036] The instrument fixing mechanism 10 is used to fix the test instrument 1 used when testing the micro-motor 2. The transmission shaft adjusting mechanism 20 includes a transmission shaft 242 arranged along the X-axis direction and used to connect the test instrument 1 and the micro-motor 2. The transmission shaft adjusting mechanism 20 is used to adjust the position of the transmission shaft 242 in the X-axis direction, Y-axis direction, and Z-axis direction. The motor fixing mechanism 30 is used to fix the micro-motor 2 to be tested and adjust the position of the micro-motor 2 in the Y-axis direction and Z-axis direction. The following is a specific description of each mechanism.

[0037] Figure 3 FIG. 21 is a schematic structural diagram of the instrument fixing mechanism 10 provided by an embodiment of the present application.

[0038] As Figure 3 shown, the instrument fixing mechanism 10 includes a first bottom plate 11, and a support seat 12 and a side stop 13 arranged on the first bottom plate 11. The first bottom plate 11 provides an installation basis for the support seat 12 and the side stop 13. The support seat 12 is used to install the test instrument 1, and the side stop 13 is used to limit the movement of the test instrument 1 in the direction perpendicular to the Z-axis.

[0039] The structures, quantities, and arrangement manners of the support seat 12 and the side stop 13 can be adjusted according to the test instrument 1 to be installed and fixed. In one embodiment, as Figure 2 and Figure 3As shown, the test instrument 1 is a motor dynamometer and has a rectangular mounting plate at the bottom; the support seats 12 are strip-shaped, and the number is two. The two support seats 12 are installed on the first bottom plate 11 in parallel. Each support seat 12 is arranged along the Y-axis direction, and threaded holes are provided at the tops of both ends. The four corners of the mounting plate can be fixedly connected to the tops of both ends of the two support seats 12 respectively by screws; the side stoppers 13 are L-shaped plates, and the number is two. The two side stoppers 13 are symmetrically arranged about the Y-axis midline of the first bottom plate 11. Each side stopper 13 is installed on the first bottom plate 11 and blocks the side of the mounting plate.

[0040] Figure 4 FIG. 4 is a schematic structural diagram of the transmission shaft adjusting mechanism 20 provided by an embodiment of the present application, Figure 5 FIG. 5 is a schematic structural diagram of the transmission shaft adjusting mechanism 20 provided by an embodiment of the present application from another angle.

[0041] As Figure 4 and Figure 5 shown, the transmission shaft adjusting mechanism 20 includes a first Y-axis adjusting component 21, an X-axis adjusting plate 22, a first Z-axis adjusting component 23, and a transmission shaft component 24. The first Y-axis adjusting component 21, the X-axis adjusting plate 22, and the first Z-axis adjusting component 23 are all in transmission connection with the transmission shaft component 24.

[0042] The first Y-axis adjusting component 21 is used to adjust the position of the transmission shaft 242 in the Y-axis direction. The first Y-axis adjusting component 21 includes a second bottom plate 211, a Y-axis adjusting plate 212, a first Y-axis bolt fixing seat 213, a Y-axis bolt adjusting seat 214, and a first Y-axis fine-tuning bolt 215.

[0043] The second bottom plate 211 can be installed on the first bottom plate 11 as Figure 1 shown. In another embodiment, the second bottom plate 211 can be independently provided. In still another embodiment, the second bottom plate 211 can be integrally formed with the first bottom plate 11.

[0044] The Y-axis adjusting plate 212 and the first Y-axis bolt fixing seat 213 are installed on the second bottom plate 211 along the Y-axis direction. The Y-axis bolt adjusting seat 214 is installed on the Y-axis adjusting plate 212, and the first Y-axis fine-tuning bolt 215 is installed on the first Y-axis bolt fixing seat 213.

[0045] Wherein, the first Y-axis fine-tuning bolt 215 is threadedly connected to the first Y-axis bolt fixing seat 213 along the Y-axis direction. The head end of the first Y-axis fine-tuning bolt 215 faces away from the Y-axis bolt adjusting seat 214 for human operation. The tail end of the first Y-axis fine-tuning bolt 215 is threadedly connected to the Y-axis bolt adjusting seat 214.

[0046] When adjusting the first Y-axis fine-tuning bolt 215, the first Y-axis fine-tuning bolt 215 drives the Y-axis bolt adjustment seat 214 and the Y-axis adjustment plate 212 to move together in the Y-axis direction.

[0047] The Y-axis adjustment plate 212 may be provided with oblong holes 212A arranged in the Y-axis direction. These oblong holes 212A are used for the adjustment and positioning of the Y-axis adjustment plate 212 in the Y-axis direction, and the number can be multiple.

[0048] Generally, the first Y-axis bolt fixing seats 213, the Y-axis bolt adjustment seats 214, and the first Y-axis fine-tuning bolts 215 are all arranged at both ends of the Y-axis adjustment plate 212 in the Y-axis direction, which facilitates adjustment operations from two directions of the Y-axis. Of course, the first Y-axis bolt fixing seats 213, the Y-axis bolt adjustment seats 214, and the first Y-axis fine-tuning bolts 215 can be arranged only at any one end of the Y-axis adjustment plate 212 in the Y-axis direction, and the adjustment of the Y-axis adjustment plate 212 in the Y-axis direction can also be achieved.

[0049] In one embodiment, as Figure 4 shown, the number of the first Y-axis bolt fixing seats 213, the Y-axis bolt adjustment seats 214, and the first Y-axis fine-tuning bolts 215 is two. The two first Y-axis bolt fixing seats 213 are symmetrically arranged on both sides of the Y-axis adjustment plate 212 with respect to the Y-axis midline of the Y-axis adjustment plate 212. The two Y-axis bolt adjustment seats 214 are respectively installed at both ends of the Y-axis adjustment plate 212 in the Y-axis direction. The two first Y-axis fine-tuning bolts 215 are respectively installed on the two first Y-axis bolt fixing seats 213 with their head ends facing away from each other, and the tail ends of the two first Y-axis fine-tuning bolts 215 are respectively threadedly connected to the corresponding Y-axis bolt adjustment seats 214.

[0050] The first Y-axis fine-tuning bolt 215 may have two threads with the same helix direction but different pitches. Through the difference between the different pitches, high-precision fine-tuning can be achieved. Furthermore, when adjusting the coaxiality of the test instrument 1 and the micro motor 2, its accuracy can be guaranteed to the micron level. The specific values of the thread diameters and pitches of the two threads can be set according to the actually required adjustment accuracy. In one embodiment, the thread diameters and pitches of the two threads of the first Y-axis fine-tuning bolt 215 are M10×1.5 and M8×1 respectively, and the pitch difference between the two threads is 0.5 mm. In this way, when operating the first Y-axis fine-tuning bolt 215, a rotation of one week can achieve an adjustment distance of 0.5 mm, and the theoretical accuracy is 0.5 / 360°.

[0051] The X-axis adjustment plate 22 is installed on the Y-axis adjustment plate 212 of the first Y-axis adjustment assembly 21. The X-axis adjustment plate 22 is used to adjust the position of the transmission shaft 242 in the X-axis direction. The X-axis adjustment plate 22 may be provided with oblong holes (not shown in the figure) arranged in the X-axis direction. These oblong holes are used for the adjustment and positioning of the X-axis adjustment plate 22 in the X-axis direction, and the number can be multiple.

[0052] The first Z-axis adjustment assembly 23 is arranged on the X-axis adjustment plate 22. The first Z-axis adjustment assembly 23 is used to adjust the position of the transmission shaft 242 in the Z-axis direction. The first Z-axis adjustment assembly 23 includes a first Z-axis support seat 231, a first Z-axis adjustment plate 232, a Z-axis bolt fixing seat 233, and a first Z-axis fine adjustment bolt 234.

[0053] The first Z-axis support seat 231 is mounted on the X-axis adjustment plate 22. The first Z-axis adjustment plate 232 is mounted on the first Z-axis support seat 231 along the Z-axis direction. The Z-axis bolt fixing seat 233 is mounted on the top of the first Z-axis support seat 231. The first Z-axis fine adjustment bolt 234 is threadedly connected to the first Z-axis fine adjustment bolt 234 along the Z-axis direction. The head end of the first Z-axis fine adjustment bolt 234 faces upward for manual operation. The tail end of the first Z-axis fine adjustment bolt 234 faces downward and is threadedly connected to the Z-axis bolt fixing seat 233.

[0054] When adjusting the first Z-axis fine adjustment bolt 234, the first Z-axis fine adjustment bolt 234 drives the first Z-axis adjustment plate 232 to move along the Z-axis direction.

[0055] The first Z-axis fine adjustment bolt 234 may have two threads with the same helix direction but different pitches. The principle and setting can refer to the first Y-axis fine adjustment bolt 215, which will not be elaborated here.

[0056] Figure 6 FIG. 15 is a schematic structural diagram of the first Z-axis adjustment plate 232 and the transmission shaft assembly 24 provided by the embodiment of the present application, where (a) is an assembly schematic diagram and (b) is an exploded schematic diagram.

[0057] As Figures 4 to 6 shown, the transmission shaft assembly 24 is arranged on the first Z-axis adjustment plate 232 and passes through the first Z-axis support seat 231 in the X-axis direction. The transmission shaft assembly 24 includes a flange hollow shaft 241, a transmission shaft 242, and a bearing 243.

[0058] The flange hollow shaft 241 is mounted on the first Z-axis adjustment plate 232 along the X-axis direction. The transmission shaft 242 is arranged along the X-axis direction and penetrates through the flange hollow shaft 241, and is rotatably connected to the inner wall of the flange hollow shaft 241 through the bearing 243. Both ends of the transmission shaft 242 can be connected to the rotating shafts of the test instrument 1 and the micro motor 2 through couplings respectively.

[0059] The bearing 243 can be axially limited by a circlip 244 and a stepped surface on the inner wall of the flange hollow shaft 241. The number of bearings 243 can be multiple. In one embodiment, the number of bearings 243 is two, and the two bearings 243 are respectively arranged at both ends inside the flange hollow shaft 241.

[0060] The transmission shaft adjustment mechanism 20 may further include a connecting sleeve 25. The connecting sleeve 25 is sleeved on the outer side of the flange hollow shaft 241 of the transmission shaft assembly 24. One end of the connecting sleeve 25 is flange-shaped and connected to the first Z-axis adjustment plate 232, and the other end of the connecting sleeve 25 is connected to the second Z-axis support seat 321 of the motor fixing mechanism 30 (see Figure 1 ).

[0061] The first Z-axis adjustment plate 232 and the second Z-axis support seat 321 are connected by the connecting sleeve 25, so that the first Z-axis adjustment plate 232 and the second Z-axis support seat 321 move together in the Z-axis direction. In other words, the adjustment of the transmission shaft 242 and the micro motor 2 in the Z-axis direction is associated. Specifically, when the adjustment of the transmission shaft 242 in the Z-axis direction is completed, the adjustment of the micro motor 2 in the Z-axis direction can be performed on this basis; when the adjustment of the micro motor 2 in the Z-axis direction is completed, the adjustment of the transmission shaft 242 in the Z-axis direction can be performed on this basis.

[0062] Figure 7 is a schematic diagram of the structure of the motor fixing mechanism 30 provided in the embodiment of the present application, Figure 8 This is a schematic diagram of the structure of the motor fixing mechanism 30 provided in the embodiment of the present application after part of the motor fixing component 31 is hidden.

[0063] If Figure 7 and Figure 8 As shown in FIG. 1 , the motor fixing mechanism 30 includes a motor fixing assembly 31, a second Z-axis adjustment assembly 32, and a second Y-axis adjustment assembly 33. The second Z-axis adjustment assembly 32 and the second Y-axis adjustment assembly 33 are both transmission-connected to the motor fixing assembly 31.

[0064] The motor fixing assembly 31 is used to fix the micro motor 2. The motor fixing assembly 31 includes a base 311, a lower fixing block 312, an upper fixing block 313, a fixing bolt 314, and a locking nut 315.

[0065] The base 311 provides a mounting base for the lower fixing block 312. The lower fixing block 312 is mounted on the base 311, and the upper fixing block 313 is disposed on the upper surface of the lower fixing block 312 and connected to the lower fixing block 312 via a fixing bolt 314. The top surface of the lower fixing block 312 and the bottom surface of the upper fixing block 313 are oppositely provided with motor slots for fixing the micro motor 2 and extending along the X-axis direction. The locking nut 315 is connected to the fixing bolt 314, and the locking nut 315 is used to lock the upper fixing block 313 with the lower fixing block 312 to fix the micro motor 2.

[0066] The shape of the motor slots on the upper fixing block 313 and the lower fixing block 312 can be designed according to the shape of the housing of the micro motor 2. In one embodiment, Figure 7 ​​​​As shown, the motor slots on the upper fixing block 313 and the lower fixing block 312 are trapezoidal. The trapezoid can accommodate the circular, square or other conventional-shaped outer shells of the micro motor 2, with good applicability.

[0067] The actual designed size of the motor slots can also meet the fixing requirements of small motors and some medium-sized motors. That is to say, the motor fixing mechanism 30 provided by the embodiment of the present application has good compatibility.

[0068] The number of fixing bolts 314 is usually multiple, which can ensure the reliability of the connection between the lower fixing block 312 and the upper fixing block 313. In one embodiment, as Figure 7 shown, the number of fixing bolts 314 is two. The two fixing bolts 314 are respectively arranged on both sides of the motor slots on the upper fixing block 313 and the lower fixing block 312, and a locking nut 315 is connected to the top of each fixing bolt 314.

[0069] The motor fixing assembly 31 may further include a wire harness bracket 316. The wire harness bracket 316 is provided with a wire harness slot, which can hold the wire harness of the measured micro motor 2 to avoid the adverse impact of messy wire harnesses on the test. In one embodiment, as Figure 8 shown, the number of wire brackets is two, and both are installed on the base 311.

[0070] The second Z-axis adjustment assembly 32 is used to adjust the position of the micro motor 2 in the Z-axis direction. The second Z-axis adjustment assembly 32 includes a second Z-axis support seat 321, a second Z-axis adjustment plate 322, a second Z-axis fine adjustment bolt 323, a linear bearing 324, a Z-axis guide shaft 325, a Z-axis spring 326, and a locking plate 327.

[0071] The second Z-axis support seat 321 includes a support plate 321A and a vertical plate 321B vertically connected to the support plate 321A. The first Z-axis fine adjustment bolt 234 and the linear bearing 324 are installed on the support plate 321A. The vertical plate 321B is connected to the connecting sleeve 25 of the transmission shaft adjustment mechanism 20.

[0072] The second Z-axis adjustment plate 322 is parallelly arranged above the support plate 321A, and the motor fixing assembly 31 is installed on the second Z-axis adjustment plate 322.

[0073] The second Z-axis fine adjustment bolt 323 is threadedly connected to the support plate 321A along the Z-axis direction. The head end of the second Z-axis fine adjustment bolt 323 faces downward for human operation, and the tail end of the second Z-axis fine adjustment bolt 323 faces upward and is connected to the second Z-axis adjustment plate 322.

[0074] When adjusting the second Z-axis fine adjustment bolt 323, the second Z-axis fine adjustment bolt 323 drives the second Z-axis adjustment plate 322 to move along the Z-axis direction.

[0075] The second Z-axis fine-tuning bolt 323 may have two sections of threads with the same helix direction but different pitches. The principle and setting can refer to the first Y-axis fine-tuning bolt 215, which will not be elaborated here.

[0076] The linear bearing 324 is installed on the second support plate 321A, and a Z-axis guide shaft 325 that is guidingly engaged with it is installed in the linear bearing 324.

[0077] The upper end of the Z-axis guide shaft 325 is connected to the second Z-axis adjustment plate 322, and a shoulder 325A is provided at the lower end of the Z-axis guide shaft 325.

[0078] The Z-axis spring 326 is sleeved on the Z-axis guide shaft 325, and both ends of the Z-axis spring 326 respectively abut against the lower end of the linear bearing 324 and the shoulder 325A at the lower end of the Z-axis guide shaft 325. The elasticity of the Z-axis spring 326 can improve the stability of the adjustment of the micro motor 2 in the Z-axis direction and improve the adjustment efficiency.

[0079] The number of the linear bearing 324 and the Z-axis guide shaft 325 is usually more than two, which can ensure the smooth movement of the second Z-axis adjustment plate 322 relative to the support plate 321A in the Z-axis direction. In one embodiment, as Figure 7 and Figure 8 shown, the number of the linear bearings 324 is four. The four linear bearings 324 are respectively installed at the four corners of the support plate 321A. A Z-axis guide shaft 325 that is guidingly engaged is installed in each linear bearing 324, and a Z-axis spring 326 is installed on each Z-axis guide shaft 325.

[0080] The locking plate 327 connects the side surface of the support plate 321A and the side surface of the second Z-axis adjustment plate 322. The locking plate 327 is used to lock the relative position of the support plate 321A and the second Z-axis adjustment plate 322 in the Z-axis direction. A waist-shaped hole 327A arranged along the Z-axis direction may be provided on the locking plate 327, and the waist-shaped hole 327A is used for the adjustment and positioning of the locking plate 327 in the Z-axis direction.

[0081] The number of the locking plates 327 can be multiple. In one embodiment, as Figure 7 and Figure 8 shown, the number of the locking plates 327 is two, and one is provided on each of the two side surfaces in the Y-axis direction of the second Z-axis adjustment plate 322. Each locking plate 327 connects the side surface of the corresponding second Z-axis adjustment plate 322 and the side surface of the corresponding support plate 321A.

[0082] The second Y-axis adjustment assembly 33 is used to adjust the position of the micro motor 2 in the Y-axis direction. The second Y-axis adjustment assembly 33 includes a second Y-axis bolt fixing seat 331, a second Y-axis fine-tuning bolt 332, a Y-axis guide shaft 333, and a Y-axis spring 334.

[0083] The second Y-axis bolt fixing seat 331 is mounted on the second Z-axis adjusting plate 322 in the Y-axis direction relative to the base 311, and a second Y-axis fine-tuning bolt 332 is mounted on the second Y-axis bolt fixing seat 331.

[0084] The second Y-axis fine-tuning bolt 332 is threadedly connected to the second Y-axis bolt fixing seat 331 along the Y-axis direction. The head end of the second Y-axis fine-tuning bolt 332 faces away from the base 311 for human operation, and the tail end of the second Y-axis fine-tuning bolt 332 is connected to the base 311.

[0085] When adjusting the second Y-axis fine-tuning bolt 332, the second Y-axis fine-tuning bolt 332 drives the base 311 to move in the Y-axis direction.

[0086] Generally, the second Y-axis bolt fixing seat 331 and the second Y-axis fine-tuning bolt 332 are provided at both ends of the base 311 in the Y-axis direction, which is convenient for adjustment operations from two directions of the Y-axis. Of course, the second Y-axis bolt fixing seat 331 and the second Y-axis fine-tuning bolt 332 can be provided only at any one end of the base 311 in the Y-axis direction, and the adjustment of the base 311 in the Y-axis direction can also be achieved.

[0087] In one embodiment, as Figure 7 and Figure 8 shown, the number of the second Y-axis bolt fixing seats 331 and the second Y-axis fine-tuning bolts 332 is two. The two second Y-axis bolt fixing seats 331 are symmetrically arranged on both sides of the base 311 with respect to the Y-axis midline of the base 311. The two second Y-axis fine-tuning bolts 332 are respectively mounted on the two second Y-axis bolt fixing seats 331 with their head ends facing away from each other, and the tail ends of the two second Y-axis fine-tuning bolts 332 are respectively connected to the corresponding sides of the base 311.

[0088] The second Y-axis fine-tuning bolt 332 can have two threads with the same helix direction but different pitches. The principle and setting can refer to the first Y-axis fine-tuning bolt 215, which will not be elaborated here.

[0089] The Y-axis guide shaft 333 is arranged along the Y-axis direction and penetrates through the base 311 and is in guiding cooperation with the base 311. An oil-free bushing (not shown in the figure) that is in guiding cooperation with the Y-axis guide shaft 333 can be provided on the base 311.

[0090] One end of the Y-axis guide shaft 333 is connected to the second Y-axis bolt fixing seat 331, and the other end of the Y-axis guide shaft 333 can be connected to another second Y-axis bolt seat or a shoulder that is in stop cooperation with the base 311 is provided thereon. In one embodiment, as Figure 7 and Figure 8As shown in the figure, a second Y-axis bolt fixing seat 331 is provided at each of the two ends of the base 311 in the Y-axis direction, and the two ends of the Y-axis guide shaft 333 are respectively connected to the two second Y-axis bolt fixing seats 331.

[0091] The Y-axis spring 334 is sleeved on the Y-axis guide shaft 333, and the two ends of the Y-axis spring 334 respectively abut against the base 311 and the second Y-axis bolt fixing seat 331. The elasticity of the Y-axis spring 334 can improve the stability of the adjustment of the micro motor 2 in the Y-axis direction and improve the adjustment efficiency.

[0092] The number of Y-axis guide shafts 333 is usually more than two, which can ensure the smooth movement of the base 311 relative to the second Y-axis bolt fixing seat 331 in the Y-axis direction. In one embodiment, as Figure 7 and Figure 8 shown in the figure, the number of Y-axis guide shafts 333 is two, and the two Y-axis guide shafts 333 are symmetrically arranged about the X-axis midline of the base 311. The two ends of each Y-axis guide shaft 333 are respectively connected to the two second Y-axis bolt fixing seats 331. Two Y-axis springs 334 are sleeved on each Y-axis guide shaft 333. One end of one Y-axis spring 334 respectively abuts against one side surface of the base 311 and the second Y-axis bolt fixing seat 331 on the same side as this side surface, and the two ends of the other Y-axis spring 334 respectively abut against the other side surface of the base 311 and the second Y-axis bolt fixing seat 331 on the same side as this other side surface.

[0093] In summary, for the micro motor test device 100 with multi-degree-of-freedom high-precision fine adjustment provided by the embodiments of the present application, through the separately provided instrument fixing mechanism 10 and motor fixing mechanism 30, the installation of the test instrument 1 and the measured micro motor 2 can be separated independently. Through the degree-of-freedom adjustment in different directions of the transmission shaft adjustment mechanism 20 and the motor fixing mechanism 30, the coaxiality accuracy of the connection between the test instrument 1 and the micro motor 2 can be ensured, and during the test process, the transmission shaft adjustment mechanism 20 and the motor fixing mechanism 30 can also be finely adjusted to meet the test requirements, greatly improving the compatibility of the device and the stability and effectiveness of the test results. In addition, the adjustment function is realized by the fine adjustment bolt, which is convenient and fast to operate, and significantly improves the adjustment efficiency.

[0094] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present application, and these should all be covered within the protection scope of the present application.

Claims

1. A multi-degree-of-freedom high-precision fine-tuning micro-motor testing device, characterized in that: It includes an instrument fixing mechanism, a transmission shaft adjusting mechanism, and a motor fixing mechanism which are sequentially arranged along the X-axis direction; The instrument fixing mechanism is used to fix the test instrument used when testing the micro motor; The transmission shaft adjustment mechanism includes a transmission shaft assembly, a first Y-axis adjustment assembly, an X-axis adjustment plate and a first Z-axis adjustment assembly connected to the transmission shaft assembly. The transmission shaft assembly includes a transmission shaft for connecting the test instrument and the micro motor. The first Y-axis adjustment assembly includes a first Y-axis fine-tuning bolt for adjusting the position of the transmission shaft in the Y-axis direction. The X-axis adjustment plate is used to adjust the position of the transmission shaft in the X-axis direction. The first Z-axis adjustment assembly includes a first Z-axis fine-tuning bolt for adjusting the position of the transmission shaft in the Z-axis direction; The motor fixing mechanism includes a motor fixing assembly and a second Z-axis adjustment assembly and a second Y-axis adjustment assembly which are transmission-connected to the motor fixing assembly. The motor fixing assembly is used to fix the micro motor. The second Z-axis adjustment assembly includes a second Z-axis fine-tuning bolt for adjusting the position of the micro-motor in the Z-axis direction. The second Y-axis adjustment assembly includes a second Y-axis fine-tuning bolt for adjusting the position of the micro motor in the Y-axis direction.

2. The micro motor testing device according to claim 1, characterized in that: The instrument fixing mechanism comprises a first bottom plate and a support seat and a side stopper arranged on the first bottom plate. The support base is used to install the testing instrument. The side stoppers are used to limit the movement of the testing instrument in a direction perpendicular to the Z-axis.

3. The micro motor testing device according to claim 1, characterized in that: The first Y-axis adjustment assembly also includes a second bottom plate, a Y-axis adjustment plate, a first Y-axis bolt fixing seat, and a Y-axis bolt adjustment seat. The Y-axis adjustment plate and the first Y-axis bolt fixing seat are arranged and mounted on the second bottom plate along the Y-axis direction. The Y-axis bolt adjustment seat is mounted on the Y-axis adjustment plate. The first Y-axis fine-tuning bolt is threadedly connected to the first Y-axis bolt fixing seat along the Y-axis direction, the head end of the first Y-axis fine-tuning bolt faces away from the Y-axis bolt adjustment seat, and the tail end is threadedly connected to the Y-axis bolt adjustment seat.

4. The micro motor testing device according to claim 3, characterized in that: The X-axis adjustment plate is mounted on the Y-axis adjustment plate. The first Z-axis adjustment component is arranged on the X-axis adjustment plate, The transmission shaft assembly is arranged on the first Z-axis adjustment assembly.

5. The micro motor testing device according to claim 1 or 4, characterized in that: The first Z-axis adjustment assembly also includes a first Z-axis support seat, a first Z-axis adjustment plate, and a Z-axis bolt fixing seat. The first Z-axis adjustment plate is installed on the first Z-axis support seat along the Z-axis direction. The Z-axis bolt fixing seat is installed on the top of the first Z-axis supporting seat, The first Z-axis fine-tuning bolt is arranged along the Z-axis direction and is threadedly connected to the first Z-axis fine-tuning bolt, the head end of the first Z-axis fine-tuning bolt faces upward, the tail end faces downward and is threadedly connected to the Z-axis bolt fixing seat; The transmission shaft assembly is disposed on the first Z-axis adjustment plate and passes through the first Z-axis support seat in the X-axis direction.

6. The micro motor testing device according to claim 5, characterized in that: The transmission shaft assembly also includes a flange hollow shaft and a bearing. The flange hollow shaft is mounted on the first Z-axis adjustment plate along the X-axis direction. The transmission shaft is inserted into the flange hollow shaft and is rotatably connected to the inner wall of the flange hollow shaft through the bearing.

7. The micro motor testing device according to claim 1, characterized in that: The motor fixing assembly includes a base, a lower fixing block, an upper fixing block, a fixing bolt, and a locking nut. The lower fixing block is mounted on the base. The upper fixing block is arranged on the upper side of the lower fixing block and connected to the lower fixing block by the fixing bolts. The bottom surface of the upper fixing block and the top surface of the lower fixing block are oppositely provided with motor slots for fixing the micro motor and penetrating along the X-axis direction. The locking nut is connected to the fixing bolt, and the locking nut is used to lock the upper fixing block and the lower fixing block to fix the micro motor.

8. The micro motor testing device according to claim 7, characterized in that: The second Z-axis adjustment assembly also includes a second Z-axis support seat, a second Z-axis adjustment plate, a linear bearing, a Z-axis guide shaft, a Z-axis spring, and a locking plate. The second Z-axis support seat includes a support plate, The Z-axis adjustment plate is arranged parallel to the support plate, and the base and the second Y-axis adjustment assembly are installed on the Z-axis adjustment plate. The second Z-axis fine-tuning bolt is arranged along the Z-axis direction and is threadedly connected to the support plate, the head end of the second Z-axis fine-tuning bolt faces downward, the tail end faces upward and is connected to the second Z-axis adjustment plate, The linear bearing is mounted on the support plate. The Z-axis guide shaft is installed in the linear bearing along the Z-axis direction and cooperates with the linear bearing guide. The upper end of the Z-axis guide shaft is connected to the second Z-axis adjustment plate, and the lower end is provided with a shaft shoulder. The Z-axis spring is sleeved on the Z-axis guide shaft, and its two ends respectively abut against the lower end of the linear bearing and the shaft shoulder. The locking plate connects the supporting plate and the second Z-axis adjustment plate, and is used to lock the relative position of the supporting plate and the second Z-axis adjustment plate in the Z-axis direction.

9. The micro motor testing device according to claim 8, characterized in that: The second Y-axis adjustment assembly also includes a second Y-axis bolt fixing seat, a Y-axis guide shaft, and a Y-axis spring. The second Y-axis bolt fixing seat is arranged and mounted on the Z-axis adjustment plate in the Y-axis direction relative to the base. The second Y-axis fine-tuning bolt is threadedly connected to the second Y-axis bolt fixing seat along the Y-axis direction, the head end of the second Y-axis fine-tuning bolt faces away from the base, and the tail end is connected to the base. The Y-axis guide shaft is arranged along the Y-axis direction and penetrates the base and cooperates with the base guide. The Y-axis spring is sleeved on the Y-axis guide shaft, and two ends thereof are respectively against the base and the second Y-axis bolt fixing seat.

10. The micro motor testing device according to claim 1, characterized in that: At least one of the first Y-axis fine-tuning bolt, the second Y-axis fine-tuning bolt, the first Z-axis fine-tuning bolt, and the second Z-axis fine-tuning bolt has two sections of threads with the same rotation direction but different pitches.

Images