Experimental machine for testing motion precision of sliding pair

Abstract

The embodiment of the utility model discloses an experimental machine for testing the kinematic accuracy of a sliding pair, and relates to the technical field of experimental appliances. The moving pair motion precision test experimental machine comprises a rack, a driving assembly, a transmission assembly, a moving pair assembly and a detection assembly, the driving assembly is installed on the rack, the driving assembly is in transmission connection with the moving pair assembly through the transmission assembly and used for driving the transmission assembly to drive the moving pair assembly to reciprocate, and the detection assembly is installed on the moving pair assembly and used for detecting the moving pair assembly. And the device is used for detecting the motion precision of the moving pair assembly, so that students can visually observe the dynamic precision change of the moving pair in actual motion, and the influence of factors such as assembly errors, load change and lubrication conditions on the precision of the moving pair can be conveniently understood.

Description

TECHNICAL FIELD

[0001] The utility model relates to experimental apparatus technical field especially, it relates to a kind of mobile pair motion precision test experimental machine. BACKGROUND

[0002] In the teaching practice of mechanical engineering discipline, as the core unit of mechanism movement, the precision characteristics (such as gap error, friction and wear, deformation compensation, etc.) of mobile pair are the key teaching content for analyzing the performance of mechanical system. The traditional teaching mode relies on two-dimensional drawing, animation demonstration or fixed-structure physical model, students cannot intuitively observe the dynamic precision change of mobile pair (such as slider-rail pair) in actual movement, and it is difficult to understand the influence of factors such as assembly error, load change and lubrication condition on the precision of mobile pair. SUMMARY

[0003] Therefore, it is necessary to provide a mobile pair motion precision test experimental machine, which aims to solve the technical problem that the traditional teaching mode relies on two-dimensional drawing, animation demonstration or fixed-structure physical model, students cannot intuitively observe the dynamic precision change of mobile pair (such as slider-rail pair) in actual movement, and it is difficult to understand the influence of factors such as assembly error, load change and lubrication condition on the precision of mobile pair.

[0004] The utility model provides a kind of mobile pair motion precision test experimental machine, comprising: rack, drive assembly, transmission assembly, mobile pair assembly and detection component, the drive assembly is installed in the rack, the drive assembly is connected with the transmission assembly by the transmission assembly, and is used to drive the transmission assembly to drive the mobile pair assembly reciprocating movement, the detection component is installed in the mobile pair assembly, and is used to detect the motion precision of the mobile pair assembly.

[0005] In one embodiment, the mobile pair assembly includes a connecting frame, a first connecting plate, a second connecting plate, a first graphite copper plate and a second graphite copper plate, the transmission assembly is in transmission connection with the connecting frame, the first connecting plate is fixed to the connecting frame, the first graphite copper plate is fixed to the first connecting plate, the second connecting plate is fixed to the rack, the second graphite copper plate is fixed to the second connecting plate, and the first graphite copper plate is in sliding connection with the second graphite copper plate.

[0006] In one embodiment, the first connecting plate is provided with a plurality of first connecting plates, and the first connecting plates are respectively arranged at the four corners of the connecting frame, the second connecting plate, the first graphite copper plate and the second graphite copper plate are each provided with a plurality of second connecting plates, first graphite copper plates and second graphite copper plates, and the second connecting plates, the first graphite copper plates and the second graphite copper plates are respectively arranged one by one corresponding to the first connecting plates.

[0007] In one embodiment, the detection component includes a first sensor, and the first sensor is installed on the rack and used to sense the displacement of the connecting frame.

[0008] In one of the embodiments, the mobile pair motion precision test experimental machine further comprises a scale assembly, and the detection assembly further comprises a second sensor and a third sensor, both of which are installed on the connecting frame and abut against the upper surface and the side surface of the scale assembly respectively.

[0009] In one of the embodiments, the driving assembly comprises a fixing frame, a driving motor, a first gear and a second gear, both of which are rotatably connected to the fixing frame and are in meshing connection, the driving motor is fixed to the first gear and is used to drive the first gear to rotate, and the second gear is in driving connection with the transmission assembly.

[0010] In one of the embodiments, the transmission assembly comprises a connecting shaft, a bearing seat, an eccentric wheel, a bearing bush and a connecting rod, the second gear is fixed to the connecting shaft, the bearing seat is fixed to the rack, the connecting shaft is rotatably connected to the bearing seat and is fixed to the eccentric wheel, the bearing bush is sleeved on the eccentric wheel, one end of the connecting rod is fixed to the bearing bush, and the other end is rotatably connected to the mobile pair assembly.

[0011] In one of the embodiments, the transmission assembly further comprises a hinge, which is fixed to the mobile pair assembly and is rotatably connected to the other end of the connecting rod.

[0012] The embodiments of the present application have the following beneficial effects:

[0013] The mobile pair motion precision test experimental machine of the present application has the following advantages: the driving assembly is installed on the rack, the driving assembly is in driving connection with the mobile pair assembly through the transmission assembly and is used to drive the transmission assembly to drive the mobile pair assembly to reciprocate, the detection assembly is installed on the mobile pair assembly and is used to detect the motion precision of the mobile pair assembly, the driving assembly is used to drive the transmission assembly to drive the mobile pair assembly to reciprocate, and the detection assembly can detect the motion precision of the mobile pair assembly, so that students can intuitively observe the dynamic precision change of the mobile pair in actual motion, thereby facilitating the understanding of the influence of factors such as assembly error, load change and lubrication condition on the precision of the mobile pair. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0015] Wherein: Figure 1 is a shaft measurement schematic diagram of a mobile pair motion precision test experimental machine in an embodiment.

[0016] Figure 2 is Figure 1 is an exploded schematic diagram of the mobile pair motion precision test experimental machine shown in the figure.

[0017] Figure 3 is Figure 2 is a local enlarged schematic diagram of A part in the mobile pair motion precision test experimental machine shown in the figure.

[0018] Reference signs:

[0019] 1, frame;

[0020] 2, drive assembly; 21, fixed frame; 22, drive motor; 23, first gear; 24, second gear;

[0021] 3, transmission assembly; 31, connecting shaft; 32, bearing seat; 33, eccentric wheel; 34, bearing bush; 35, connecting rod; 36, hinge;

[0022] 4, mobile pair assembly; 41, connecting frame; 42, first connecting plate; 43, second connecting plate; 44, first graphite copper plate; 45, second graphite copper plate;

[0023] 5, detection assembly; 51, first sensor; 52, second sensor; 53, third sensor; 6, scale assembly. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0026] In the description of the utility model, it needs to be explained that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the utility model product when it is usually placed, it is only for the convenience of describing the utility model and simplifying the description, and it does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the utility model.

[0027] In addition, if the terms "first", "second" and the like are used only to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0029] Please combine Figures 1 to 3 Now the mobile pair motion precision test experiment machine provided by the utility model will be described.

[0030] The mobile pair motion precision test experiment machine comprises a rack 1, a driving assembly 2, a transmission assembly 3, a mobile pair assembly 4 and a detection assembly 5, the driving assembly 2 is installed on the rack 1, the driving assembly 2 is in transmission connection with the mobile pair assembly 4 through the transmission assembly 3, and is used for driving the transmission assembly 3 to drive the mobile pair assembly 4 to move back and forth, the detection assembly 5 is installed on the mobile pair assembly 4, and is used for detecting the motion precision of the mobile pair assembly 4. Specifically, the detection assembly 5 is fixed on the mobile pair assembly 4.

[0031] It can be understood that the driving assembly 2 of the mobile pair motion precision test experiment machine is installed on the rack 1, the driving assembly 2 is in transmission connection with the mobile pair assembly 4 through the transmission assembly 3, and is used for driving the transmission assembly 3 to drive the mobile pair assembly 4 to move back and forth, the detection assembly 5 is installed on the mobile pair assembly 4, and is used for detecting the motion precision of the mobile pair assembly 4, the driving assembly 2 drives the transmission assembly 3 to drive the mobile pair assembly 4 to move back and forth through the setting, the detection assembly 5 can detect the motion precision of the mobile pair assembly 4, so that students can intuitively observe the dynamic precision change of the mobile pair in actual motion, thereby facilitating the understanding of the influence of factors such as assembly error, load change and lubrication condition on the precision of the mobile pair.

[0032] It should be noted that the rack 1 is a structural member made of profiled material, which can clearly observe the movement of the internal mechanical structure.

[0033] It should be noted that the mobile pair motion precision test experiment machine adopts modular design, so that the test experiment machine can quickly adapt to different teaching and research needs, teachers and students can easily replace and reorganize various transmissions, actuators and mobile pairs according to specific course requirements or research goals, such as replacing the transmission assembly 3 with a belt drive, replacing the actuator with a six-bar structure, and replacing the mobile pair form with a linear bearing and a light shaft. This flexibility far exceeds the traditional fixed design experiment machine.

[0034] In the embodiment, the mobile pair assembly 4 includes a connecting frame 41, a first connecting plate 42, a second connecting plate 43, a first graphite copper plate 44 and a second graphite copper plate 45, the transmission assembly 3 is in transmission connection with the connecting frame 41, the first connecting plate 42 is fixed to the connecting frame 41, the first graphite copper plate 44 is fixed to the first connecting plate 42, the second connecting plate 43 is fixed to the rack 1, the second graphite copper plate 45 is fixed to the second connecting plate 43, and the first graphite copper plate 44 is in sliding connection with the second graphite copper plate 45. Specifically, the driving assembly 2 drives the transmission assembly 3 to move, the transmission assembly 3 drives the connecting frame 41 to move back and forth, the connecting frame 41 drives the first connecting plate 42 to move back and forth, the first connecting plate 42 drives the first graphite copper plate 44 to move back and forth, and the first graphite copper plate 44 slides relative to the second graphite copper plate 45. The first graphite copper plate 44 and the second graphite copper plate 45 are provided to realize high-precision linear sliding pairs with low friction characteristics.

[0035] Further, the first connecting plate 42 is provided with a plurality of first connecting plates 42, and is respectively arranged at the four corners of the connecting frame 41, and the second connecting plate 43, the first graphite copper plate 44 and the second graphite copper plate 45 are all provided with a plurality of first connecting plates 42, and are respectively arranged one by one with the first connecting plate 42. By arranging the first connecting plate 42 and the first graphite copper plate 44 at the four corners of the connecting frame 41, the stability of the movement of the connecting frame 41 can be improved.

[0036] In an embodiment, as shown in Figure 1 and Figure 2 The detection assembly 5 includes a first sensor 51, and the first sensor 51 is installed on the rack 1 and is used for sensing the displacement of the connecting frame 41. Specifically, the first sensor 51 is a grating ruler, which can measure the high-precision linear displacement of the connecting frame 41.

[0037] In an embodiment, as shown in Figure 1 and Figure 3 The detection assembly 5 includes a first sensor 51, and the first sensor 51 is installed on the rack 1 and is used for sensing the displacement of the connecting frame 41. Specifically, the first sensor 51 is a grating ruler, which can measure the high-precision linear displacement of the connecting frame 41.As shown, the mobile pair motion precision test experiment machine further comprises a scale assembly 6, and the detection assembly 5 further comprises a second sensor 52 and a third sensor 53, both of which are installed on the connecting frame 41 and abut the upper surface and the side surface of the scale assembly 6 respectively. Specifically, the scale assembly 6 provides a zero deformation reference surface, which is used to calibrate the data of the second sensor 52 and the third sensor 53 in the detection process and eliminate the measurement error caused by the unevenness of the table surface. Both the second sensor 52 and the third sensor 53 are inductive displacement sensors, which monitor the micro-displacement or vibration on both sides of the mobile pair assembly 4 and provide measurement data of the deflection position.

[0038] In an embodiment, as shown in the drawings, Figure 1 As shown, the driving assembly 2 comprises a fixed frame 21, a driving motor 22, a first gear 23 and a second gear 24, both of which are rotatably connected to the fixed frame 21, and the first gear 23 meshes with the second gear 24, the driving motor 22 is fixed with the first gear 23 and is used to drive the first gear 23 to rotate, and the second gear 24 is drivingly connected with the transmission assembly 3. Specifically, the driving motor 22 drives the first gear 23 to rotate, the first gear 23 drives the second gear 24 to rotate, the second gear 24 drives the transmission assembly 3 to move, and the transmission assembly 3 drives the mobile pair assembly 4 to realize linear motion.

[0039] In this embodiment, the transmission assembly 3 comprises a connecting shaft 31, a bearing seat 32, an eccentric wheel 33, a bearing bush 34 and a connecting rod 35, the second gear 24 is fixed with the connecting shaft 31, the bearing seat 32 is fixed to the rack 1, the connecting shaft 31 is rotatably connected with the bearing seat 32 and is fixed with the eccentric wheel 33, the bearing bush 34 is sleeved on the eccentric wheel 33, one end of the connecting rod 35 is fixed with the bearing bush 34, and the other end is rotatably connected with the mobile pair assembly 4. Specifically, the driving motor 22 drives the first gear 23 to rotate, the first gear 23 drives the second gear 24 to rotate, the second gear 24 drives the connecting shaft 31 to rotate, the connecting shaft 31 drives the eccentric wheel 33 to rotate, the eccentric wheel 33 drives the bearing bush 34 to reciprocate, the bearing bush 34 drives the connecting shaft 31 to reciprocate, and the connecting shaft 31 drives the mobile pair assembly 4 to reciprocate.

[0040] Further, the transmission assembly 3 further comprises a hinge 36, which is fixed to the mobile pair assembly 4 and is rotatably connected with the other end of the connecting rod 35. By arranging the hinge 36, the connecting shaft 31 is rotatably connected with the mobile pair assembly 4 through the hinge 36, so that the mobile pair assembly 4 realizes reciprocating movement.

[0041] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0042] The above merely discloses preferred embodiments of the present application, and of course cannot limit the scope of the present application, therefore equivalent changes made according to the claims of the present application still belong to the scope of the present application.

Claims

1. A mobile secondary motion accuracy test machine, characterized in that, The utility model relates to a kind of mobile vice motion precision test experimental machine, including: rack, drive assembly, transmission assembly, moving pair assembly and detection assembly, the drive assembly is installed to the rack, the drive assembly is connected with the moving pair assembly by the transmission assembly, and it is used to drive the transmission assembly with the moving pair assembly reciprocating movement, the detection assembly is installed to the moving pair assembly, and it is used to detect the motion precision of the moving pair assembly. The moving pair assembly includes connecting frame, first connecting plate, second connecting plate, first graphite copper plate and second graphite copper plate, the transmission assembly is connected with the connecting frame, the first connecting plate is fixed to the connecting frame, the first graphite copper plate is fixed to the first connecting plate, the second connecting plate is fixed to the rack, the second graphite copper plate is fixed to the second connecting plate, the first graphite copper plate is slidably connected with the second graphite copper plate.

2. The motion accuracy testing machine for moving pairs according to claim 1, characterized in that, The first connecting plate is provided with multiple, and is respectively arranged at the four corners of the connecting frame, the second connecting plate, the first graphite copper plate and the second graphite copper plate are all provided with multiple, and are respectively arranged one by one with the first connecting plate.

3. The motion accuracy testing machine for moving pairs according to claim 2, characterized in that, The detection assembly includes first sensor, the first sensor is installed to the rack, and it is used to sense the displacement of the connecting frame.

4. The machine of claim 2, wherein, The moving vice motion precision test experimental machine further includes scale assembly, the detection assembly further includes second sensor and third sensor, the second sensor and the third sensor are both installed to the connecting frame, and respectively abut on the upper surface and side surface of the scale assembly.

5. The motion accuracy testing machine for moving pairs according to claim 2, characterized in that, The drive assembly includes fixed frame, drive motor, first gear and second gear, the first gear and the second gear are both rotatably connected to the fixed frame, and the first gear engages the second gear, the drive motor is fixed with the first gear, and it is used to drive the first gear to rotate, the second gear is connected with the transmission assembly.

6. The motion accuracy testing machine for moving pairs according to claim 1, characterized in that, The transmission assembly includes connecting shaft, bearing seat, eccentric wheel, bearing bush and connecting rod, the second gear is fixed with the connecting shaft, the bearing seat is fixed to the rack, the connecting shaft is rotatably connected with the bearing seat, and is fixed with the eccentric wheel, the bearing bush is sleeved with the eccentric wheel, one end of the connecting rod is fixed with the bearing bush, and the other end is rotatably connected with the moving pair assembly.

7. The machine of claim 6, wherein, The transmission assembly further includes hinge, the hinge is fixed to the moving pair assembly, and is rotatably connected with the other end of the connecting rod.

8. The motion accuracy testing machine for moving pairs according to claim 7, characterized in that, ​

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