Driver rated load test tool

Abstract

The utility model provides a driver rated load test tool, and belongs to the technical field of driver test tools. Comprising a to-be-tested motor; the positioning plate is vertically fixed on the bottom plate, a through hole is formed in the positioning plate, and positioning holes are formed in the peripheral side of the through hole; the back plate is fixedly connected with the positioning plate, and the back plate and the positioning plate are mutually matched to form a slot with an upward opening; the shaft locking piece is in socket connection with the slot, a shaft locking hole is formed in the middle of the shaft locking piece and used for sleeving and fixing an output shaft of the motor to be tested, a plurality of threaded holes are formed in the shaft locking piece in a central symmetry mode, and the threaded holes and the mounting holes in the output end of the motor to be tested fix the clamping positioning plate through bolts. According to the utility model, the modular design is adopted, and the bottom plate, the positioning plate, the shaft locking sheet, the base plate and other parts are detachably connected, so that the tooling process is more flexible and rapid, proper tooling parts can be rapidly selected and combined according to the model and the number of motors to be tested, and the preparation time and the adjustment work are greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of driver testing tooling, in particular to a driver rated load testing tooling. Background Art

[0002] In motor manufacturing and R&D, especially during the design and production of servo motors, rated load testing is a crucial step in ensuring product quality and performance. Rated load testing simulates the load conditions a motor will experience under actual operating conditions, thereby evaluating its output capacity, stability, and durability.

[0003] Traditional driver load rating test fixtures have numerous shortcomings, including cumbersome setup, lengthy adjustment times, poor adaptability to motor models, and unstable fixation. These issues directly impact test efficiency and the accuracy of test results. Specifically, traditional fixtures often employ an integrated design, making them difficult to flexibly adjust to different servo motor models and requiring diagonal bolt fixation of the motor. Furthermore, the fixtures require frequent replacement and adjustment of components, increasing workload and easily leading to installation errors, impacting the accuracy of test results.

[0004] Therefore, the present application provides a drive rated load test fixture to meet the needs. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a driver rated load test fixture to address the many shortcomings of existing driver rated load test fixtures, such as cumbersome fixture installation, long adjustment time, poor adaptability to motor models, unstable fixation, and other issues. These problems directly affect the test efficiency and the accuracy of the test results. Specifically, traditional fixtures often adopt an integrated design, which is difficult to flexibly adjust according to different models of servo motors and requires diagonal bolt fixation of the motor. At the same time, the fixture components need to be frequently replaced and adjusted during the fixture installation process, which not only increases the workload but also easily leads to installation errors, affecting the accuracy of the test results.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A driver rated load test fixture comprises: a motor to be tested; a positioning plate, which is vertically fixed to a base plate, a through hole for passing the output shaft of the motor to be tested is provided at the center of the positioning plate, and a plurality of positioning holes symmetrically distributed in a radial direction around the through hole are provided; a back plate, which is fixedly connected to the positioning plate, and the two cooperate with each other to form a slot with an opening facing upward; a locking shaft piece, which is socket-connected to the slot, a locking shaft hole is provided in the middle of the locking shaft piece, which is used to sleeve and fix the output shaft of the motor to be tested, and a plurality of threaded holes are provided on the locking shaft piece in a centrally symmetrical manner, and the threaded holes are fixed to the positioning plate with the mounting holes of the output end of the motor to be tested through bolts, and are used to fix the motor to be tested on the side of the positioning plate away from the back plate.

[0008] Preferably, it also includes a pad, which is made of flexible material and is fixed on the side of the positioning plate away from the back plate.

[0009] Preferably, the backing plate is provided with through grooves having the same size and distribution position as the through holes and the positioning holes.

[0010] Preferably, the positioning hole has a waist-shaped hole structure, and the hole wall width of the positioning hole is greater than the hole diameter of the threaded hole.

[0011] Preferably, a positioning plane is provided on the output shaft of the motor to be tested, a plane structure corresponding to the positioning plane is provided on the inner side wall of the shaft locking hole, and the shaft locking hole and the output shaft of the motor to be tested are matched with each other in a socket connection.

[0012] Preferably, the base plate and the positioning plate are a detachable connection structure, and a plurality of groups of assembly holes for fixing the positioning plates are provided on the base plate.

[0013] Preferably, the shaft locking plate is provided with multiple specifications, and the threaded hole on the shaft locking plate of each specification has a different center distance from the shaft locking hole and a different aperture of the shaft locking hole, and is adapted to the mounting hole spacing and output shaft diameter of the corresponding specification of the motor to be tested.

[0014] Preferably, the shaft-locking plates of different specifications have the same size and are provided with a handle on the top.

[0015] Preferably, the motor to be tested is a servo motor.

[0016] Preferably, the bottom plate, the positioning plate, the back plate and the shaft locking plate are all made of high-strength steel.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] 1. The modular design, including detachable base plates, positioning plates, shaft locks and pads, makes the tooling process more flexible and faster. According to the model and quantity of the motors to be tested, the appropriate tooling components can be quickly selected and combined, greatly reducing preparation time and adjustment work.

[0019] 2. The through-hole and positioning hole design on the positioning plate, as well as the threaded hole and locking hole design on the locking shaft piece, make the positioning and fixing process of the motor simple and quick. The motor tooling can be completed by simply fastening the locking shaft piece to the motor mounting hole with bolts. This not only improves the tooling speed, but also ensures the accuracy and stability of the motor installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable one skilled in the relevant art to make and use the present disclosure.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is an exploded view of the tooling structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the installation structure of the shaft lock piece of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the shaft lock piece of the utility model;

[0025] Table 1 is the temperature rise data table of the servo module under test in the shaft lock mode of the utility model.

[0026] In the figure: 1. Base plate; 2. Positioning plate; 3. Back plate; 4. Motor to be tested; 5. Pad; 6. Shaft lock plate; 7. Through hole; 8. Positioning hole; 9. Slot; 10. Handle; 11. Shaft lock hole; 12. Threaded hole.

[0027] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0028] The following describes in detail a driver rated load test fixture provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments. For some known technologies, those skilled in the art may employ alternative implementations. Furthermore, the accompanying drawings are provided solely for the purpose of describing the embodiments in greater detail and are not intended to limit the present invention.

[0029] like Figure 1 - Figure 4 As shown, the embodiment of the present invention provides a driver rated load test fixture, comprising: a motor to be tested 4, which is a servo motor; a positioning plate 2, which is vertically fixed to a base plate 1, a through hole 7 for passing the output shaft of the motor to be tested 4 is opened at the center of the positioning plate 2, and a plurality of positioning holes 8 are radially opened around the through hole 7 and are distributed symmetrically with respect to the center, and the positioning holes 8 pass through the body of the positioning plate 2, wherein the positioning holes 8 are preferably four reference holes. Figure 2 ; The back plate 3 is fixedly connected to the positioning plate 2, and the two cooperate with each other to form a slot 9 with an upward opening; and a locking shaft piece 6 is connected to the slot 9 with a socket connection. A locking shaft hole 11 is provided in the middle position of the locking shaft piece 6 for sleeve-mounted fixing the output shaft of the motor to be tested 4. A plurality of threaded holes 12 are provided on the locking shaft piece 6 in a centrally symmetrical manner. The threaded holes 12 are fixed to the mounting holes of the output end of the motor to be tested 4 by bolts to clamp the positioning plate 2, and are used to fix the motor to be tested 4 on the side of the positioning plate 2 away from the back plate 3.

[0030] Furthermore, a plurality of slots 9 composed of positioning plates 2 and back plates 3 can be provided on the same base plate 1 (refer to Figure 1 ), which is convenient for simultaneously positioning multiple servo motors for rated load testing.

[0031] like Figure 2 As shown, it also includes a pad 5, which is made of flexible material, such as rubber or cotton pad and other sheet materials, and is fixed on the side of the positioning plate 2 away from the back plate 3. The pad 5 is fixed to the positioning plate 2 by adhesive application. When the motor 4 to be tested is tooled, the pad 5 is in contact with the motor output end housing to avoid wear caused by direct contact friction between the motor housing and the positioning plate 2. While protecting the motor 4 to be tested, the friction force of the motor body and the lock shaft plate 6 on the positioning plate 2 when the bolts are fixed to the motor mounting holes and threaded holes 12 is improved, thereby improving the tooling stability.

[0032] like Figure 3 As shown, the pad 5 is provided with through grooves having the same size and distribution position as the through holes 7 and the positioning holes 8 to avoid obstruction of the tooling of the motor 4 to be tested.

[0033] Since the motor 4 to be tested has various models and the sizes of motors of different models are different, resulting in different spacing between the mounting holes of the motor output end cover, the positioning hole 8 is set to a waist-shaped hole structure, and the hole wall width of the positioning hole 8 is larger than the aperture of the threaded hole 12 to ensure that the bolts used to fix the threaded hole 12 and the motor mounting hole can pass through the positioning plate 2 normally.

[0034] By providing the locking shaft piece 6 with multiple specifications, and the threaded hole 12 on each specification of the locking shaft piece 6 has a different center distance from the locking shaft hole 11 and a different aperture of the locking shaft hole 11, and is adapted to the mounting hole spacing and output shaft diameter of the corresponding specification of the motor 4 to be tested, for example, for a motor with a mounting hole spacing of 75mm, a locking shaft piece 6 with a positioning column spacing of 75mm can be selected; and for a motor with a mounting hole spacing of 85mm, a locking shaft piece 6 with a corresponding spacing is selected, and by selecting a locking shaft piece 6 with a suitable spacing between the threaded holes 12 to lock with the mounting holes of motors of different specifications and models, and the diameter of the locking shaft hole 11 on each locking shaft piece 6 that matches the motor 4 to be tested is adapted to the output shaft of the motor.

[0035] Among them, the plate sizes of the locking pieces 6 of different specifications are the same, ensuring that each locking piece 6 can be placed inside the slot 9, and a handle 10 is provided on the top to facilitate pulling the locking piece 6 out of the slot 9.

[0036] A positioning plane is provided on the output shaft of the motor 4 to be tested, and a planar structure corresponding to the positioning plane is provided on the inner wall of the lock shaft hole 11. The lock shaft hole 11 is socket-connected with the output shaft of the motor 4 to be tested, and the rotation of the motor output shaft is limited by passing the motor output shaft through the lock shaft hole 11.

[0037] like Figure 2 As shown, the base plate 1 and the positioning plate 2 are detachable connection structures, such as bolt connection or slot connection. The base plate 1 is provided with multiple groups of assembly holes for fixing the positioning plates 2, which is convenient for adjusting the distance between multiple positioning plates 2 and facilitating the installation of special specifications of motors. For example, Figure 1 In the tooling shown, two positioning plates 2 arranged opposite to each other can be installed on the base plate 1 according to the size of the test space and the number of motors, so as to test two servo motors at the same time.

[0038] The base plate 1, positioning plate 2, back plate 3, and shaft lock plate 6 are all made of high-strength steel, and a reinforcing plate for support is fixedly connected to the lower side of the positioning plate 2 near the end position. The reinforcing plate abuts against the top of the base plate 1 to improve the vertical support for the positioning plate 2, ensuring that the positioning plate 2 will not be deformed or shifted due to force during the test, and will not affect the normal tooling of the motor 4 to be tested.

[0039] The technical solution provided by the present invention is to first fix the positioning plate 2 vertically on the base plate 1 when performing a rated load test on the driver. According to the position of the assembly hole on the base plate 1, the positioning plate 2 is firmly installed using bolts or slot connections. If multiple motors need to be tested at the same time, multiple positioning plates 2 can be installed on the base plate 1 according to the base plate space size and the number of motors, and the distance between them can be adjusted to ensure that the fixed connection between the base plate 1 and the positioning plate 2 is stable. According to the model and specifications of the motor 4 to be tested, a suitable locking shaft piece 6 is selected and inserted into the slot 9. At this time, the locking shaft hole 11 and the threaded hole 12 on the locking shaft piece 6 can be observed through the through hole 7 and the positioning hole 8 on the positioning plate 2. Then, the output shaft of the motor 4 to be tested is passed through the through hole from one side of the positioning plate 2. 7, and lock it with the locking shaft hole 11, then adjust the body angle of the motor 4 to be tested, and fix the mounting hole and threaded hole 12 of the motor 4 to be tested with bolts. At this time, the motor and the locking shaft piece 6 cooperate to clamp the fixed positioning plate 2, and the output shaft of the motor 4 to be tested is locked by the rotation limit of the locking shaft hole 11. Finally, connect the test equipment and start the motor 4 to be tested, so that the servo can continuously output the rated load without triggering the overload alarm. The test equipment is used to detect the heating state of the servo motor (refer to Table 1). This is one of the times that the motor shaft is fixed and locked by using the locking shaft piece 6 to simulate the rated load operating conditions of the motor, and drive the temperature rise data of the product module.

[0040] This invention encompasses any alternatives, modifications, equivalents, and solutions that do not depart from the spirit and scope of this invention. While specific details are described in detail in the preferred embodiments of this invention to provide a thorough understanding, those skilled in the art will be able to fully understand this invention without these details. Furthermore, to avoid unnecessary confusion regarding the essence of this invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A driver rated load test fixture, characterized in that: include: Motor to be tested (4); A positioning plate (2) is vertically fixed on the base plate (1); a through hole (7) for passing the output shaft of the motor (4) to be tested is provided at the center of the positioning plate (2); and a plurality of positioning holes (8) are radially provided around the through hole (7) and are distributed symmetrically with respect to the center; A back plate (3) is fixedly connected to the positioning plate (2), and the two cooperate with each other to form a slot (9) with an upward opening; A shaft locking piece (6) is connected to the slot (9) in a socket-type manner. A shaft locking hole (11) is provided in the middle of the shaft locking piece (6) for sleeve-mounting and fixing the output shaft of the motor to be tested (4). A plurality of threaded holes (12) are provided on the shaft locking piece (6) in a centrally symmetrical manner. The threaded holes (12) are fixedly clamped to the positioning plate (2) by bolts with the mounting holes at the output ends of the motor to be tested (4), and are used to fix the motor to be tested (4) on the side of the positioning plate (2) away from the back plate (3).

2. The driver rated load test fixture according to claim 1, characterized in that: It also includes a backing plate (5) made of a flexible material and fixed on a side of the positioning plate (2) away from the back plate (3).

3. The driver rated load test fixture according to claim 2, characterized in that: The pad (5) is provided with a through groove having the same size and distribution position as the through hole (7) and the positioning hole (8).

4. The driver rated load test fixture according to claim 1, characterized in that: The positioning hole (8) has a waist-shaped hole structure, and the hole wall width of the positioning hole (8) is greater than the hole diameter of the threaded hole (12).

5. The driver rated load test fixture according to claim 1, characterized in that: A positioning plane is provided on the output shaft of the motor to be tested (4), a plane structure corresponding to the positioning plane is provided on the inner wall of the locking shaft hole (11), and the locking shaft hole (11) is in a socket-type connection with the output shaft of the motor to be tested (4).

6. The driver rated load test fixture according to claim 1, characterized in that: The base plate (1) and the positioning plate (2) are a detachable connection structure, and the base plate (1) is provided with a plurality of groups of assembly holes for fixing the positioning plate (2).

7. The driver rated load test fixture according to claim 1, characterized in that: The shaft locking piece (6) is provided with a plurality of specifications, and the threaded hole (12) on the shaft locking piece (6) of each specification has a different center distance from the shaft locking hole (11) and a different aperture of the shaft locking hole (11), and is adapted to the installation hole spacing and output shaft diameter of the motor (4) to be tested of the corresponding specification.

8. The driver rated load test fixture according to claim 7, characterized in that: The shaft locking pieces (6) of different specifications have the same plate size and are provided with a handle (10) on the top.

9. The driver rated load test fixture according to claim 1, characterized in that: The motor to be tested (4) is a servo motor.

10. The driver rated load test fixture according to claim 1, characterized in that: The bottom plate (1), the positioning plate (2), the back plate (3), and the shaft-locking plate (6) are all made of high-strength steel.

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