Experimental machine for testing rotation precision of shaft system
By designing adjustable test components, the problem of existing testing machines being unable to adjust the test components after replacing the spindle has been solved, achieving greater experimental flexibility and adaptability, and ensuring the accuracy and applicability of spindle testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-03
AI Technical Summary
The existing rotary accuracy testing machine cannot adjust the testing components after the spindle is replaced, which affects the flexibility and adaptability of the experiment.
A shaft rotation accuracy testing machine was designed, including a frame, a spindle assembly, and a testing assembly. The testing assembly consists of a fixed block, a first adjusting block, a second adjusting block, a fixture, and a sensor. The position of the sensor can be adjusted through sliding connections and fasteners to adapt to the testing requirements of different spindles.
It improves the flexibility and adaptability of the experiment, and can accurately measure the radial runout of different spindles, thus enhancing the accuracy and applicability of the detection.
Smart Images
Figure CN224080881U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of experimental equipment technology, and in particular to an experimental machine for testing the rotational accuracy of shaft systems. Background Technology
[0002] In the field of shaft rotational motion, spindle rotation accuracy is a crucial factor in ensuring the movement of mechanical equipment. Most existing rotation accuracy testing machines fix the testing components on the frame and measure the spindle runout data by rotating the spindle and using displacement sensors or dial indicators. However, this method is mainly designed for specific spindles or bearings and cannot adjust the testing components accordingly after changing the spindle, thus affecting the flexibility and adaptability of the experiment. Utility Model Content
[0003] Therefore, it is necessary to provide a shaft rotation accuracy testing machine, which aims to solve the technical problem that most existing rotation accuracy testing machines fix the testing components on the frame and measure the spindle runout data by rotating the spindle and using displacement sensors or dial indicators. However, this method is mainly designed for specific spindles or bearings and cannot adjust the testing components accordingly after changing the spindle, thus affecting the flexibility and adaptability of the experiment.
[0004] This utility model provides a shaft rotation accuracy testing machine, including: a frame, a spindle assembly, and a testing assembly. The spindle assembly is rotatably connected to the frame. The testing assembly includes a fixed block, a first adjusting block, a second adjusting block, a fixture, and a sensor. The fixed block is disposed on one side of the frame. The first adjusting block is slidably connected to the fixed block and moves along a first direction. The second adjusting block is slidably connected to the first adjusting block and moves along a second direction. The first direction and the second direction are set at an angle. The fixture is detachably connected to the second adjusting block. The sensor is mounted on the fixture and is used to sense the radial runout of the spindle assembly.
[0005] In one embodiment, multiple test components are provided and spaced apart along the extension direction of the spindle assembly.
[0006] In one embodiment, two fixing blocks are provided and symmetrically arranged on both sides of the frame. Two first adjusting blocks and two second adjusting blocks are provided and are arranged in correspondence with the fixing blocks. The two ends of the clamp are detachably connected to the two second adjusting blocks respectively.
[0007] In one embodiment, the fixed block is provided with a first sliding groove, the first adjusting block is provided with a second sliding groove, the first adjusting block is slidably connected to the groove wall of the first sliding groove, and the second adjusting block is slidably connected to the groove wall of the second sliding groove.
[0008] In one embodiment, the shaft rotation accuracy testing machine further includes a first fastener and a second fastener. The first fastener is threadedly connected to the fixing block and abuts against the first adjusting block. The second fastener is threadedly connected to the first adjusting block and abuts against the second adjusting block.
[0009] In one embodiment, the clamp is semi-circular, and the clamp is provided with a plurality of mounting holes spaced apart along the circumference, and the sensor is mounted in the mounting holes.
[0010] In one embodiment, the shaft rotation accuracy testing machine further includes a reference base, which is used as a reference for debugging the testing machine.
[0011] In one embodiment, the spindle assembly includes a rotating body, a bearing, and a bearing housing, the rotating body being rotatably connected to the bearing housing via the bearing, the bearing housing being mounted on the frame, and the sensor detecting the radial runout of the rotating body.
[0012] In one embodiment, the spindle assembly further includes a handwheel and a coupling, the handwheel being fixed to the rotating body via the coupling.
[0013] In one embodiment, the spindle assembly further includes an encoder mounted on the frame and used to measure the rotation angle of the rotating body.
[0014] Implementing the embodiments of this utility model will have the following beneficial effects:
[0015] The shaft rotation accuracy testing machine of this invention has a main shaft assembly rotatably connected to the frame, a fixed block disposed on one side of the frame, a first adjusting block slidably connected to the fixed block and moving along a first direction, and a second adjusting block slidably connected to the first adjusting block and moving along a second direction. The first and second directions are set at an angle. A fixture is detachably connected to the second adjusting block. A sensor is installed on the fixture and is used to sense the radial runout of the main shaft assembly. After the main shaft is replaced, the first adjusting block moves relative to the fixed block, which can adjust the displacement of the second adjusting block and the fixture along the first direction. The second adjusting block moves relative to the first adjusting block, which can adjust the position of the fixture along the second direction, so that the fixture can be adjusted to an appropriate position, thereby allowing the sensor to be adjusted to an appropriate position, thus improving the flexibility and adaptability of the experiment. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] in: Figure 1 This is a schematic diagram of the isometric projection of a shaft rotation accuracy testing machine in one embodiment.
[0018] Figure 2 for Figure 1 The diagram shows an exploded view of the shaft rotation accuracy testing machine.
[0019] Figure 3 for Figure 2 A partially enlarged schematic diagram of part A in the shaft rotation accuracy testing machine shown.
[0020] Figure label:
[0021] 1. Rack;
[0022] 2. Spindle assembly; 21. Rotary body; 22. Bearing; 23. Bearing housing; 24. Handwheel; 25. Coupling; 26. Encoder;
[0023] 3. Test components; 31. Fixing block; 311. First slide rail; 32. First adjusting block; 321. Second slide rail; 33. Second adjusting block; 34. Fixture; 341. Mounting hole; 35. Sensor;
[0024] 4. First fastener; 5. Second fastener; 6. Reference base. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0027] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0028] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0029] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0030] Please combine them together Figures 1 to 3 The shaft rotation accuracy testing machine provided by this utility model will now be described.
[0031] The shaft rotation accuracy testing machine includes: a frame 1, a spindle assembly 2, and a testing assembly 3. The spindle assembly 2 is rotatably connected to the frame 1. The testing assembly 3 includes a fixed block 31, a first adjusting block 32, a second adjusting block 33, a fixture 34, and a sensor 35. The fixed block 31 is disposed on one side of the frame 1. The first adjusting block 32 is slidably connected to the fixed block 31 and moves along a first direction. The second adjusting block 33 is slidably connected to the first adjusting block 32 and moves along a second direction. The first direction and the second direction are set at an angle. The fixture 34 is detachably connected to the second adjusting block 33. The sensor 35 is installed on the fixture 34 and is used to sense the radial runout of the spindle assembly 2.
[0032] It is understood that the spindle assembly 2 of the shaft rotation accuracy testing machine is rotatably connected to the frame 1, the fixed block 31 is set on one side of the frame 1, the first adjusting block 32 is slidably connected to the fixed block 31 and moves along the first direction, the second adjusting block 33 is slidably connected to the first adjusting block 32 and moves along the second direction, the first direction and the second direction are set at an angle, the clamp 34 is detachably connected to the second adjusting block 33, the sensor 35 is installed on the clamp 34 and is used to sense the radial runout of the spindle assembly 2. After the spindle is replaced, the first adjusting block 32 moves relative to the fixed block 31, which can adjust the displacement of the second adjusting block 33 and the clamp 34 along the first direction. The second adjusting block 33 moves relative to the first adjusting block 32, which can adjust the position of the clamp 34 along the second direction, so that the clamp 34 can be adjusted to an appropriate position, thereby allowing the sensor 35 to be adjusted to an appropriate position, so as to improve the flexibility and adaptability of the experiment.
[0033] It should be noted that, depending on the placement of the shaft rotation accuracy testing machine, the first direction can be either vertical or horizontal, and the second direction can also be either vertical or horizontal. For ease of understanding, in the relevant embodiments, the first direction is vertical and the second direction is horizontal.
[0034] It should be added that when other spindle assemblies 2 need to be tested, since the current spindle assembly 2 is removed from the frame 1, and another spindle assembly 2 is replaced and then installed on the frame 1, the previous installation position will be changed, and the spindle assembly 2 will also be different. At this time, the first adjusting block 32 is adjusted to drive the second adjusting block 33, the clamp 34 and the sensor 35, and the second adjusting block 33 is adjusted to drive the clamp 34 and the sensor 35, thereby adjusting the position of the sensor 35 to adapt to the position of the currently replaced spindle assembly 2.
[0035] In this embodiment, multiple test components 3 are provided and spaced apart along the extension direction of the spindle assembly 2. By providing multiple test components 3, the radial runout of the spindle assembly 2 can be tested more accurately.
[0036] The six displacement sensors 35 on the two test components 3 can measure simultaneously, and the two circular center trajectories can be spatially connected to form an axial motion trajectory.
[0037] Furthermore, two fixing blocks 31 are provided and symmetrically arranged on both sides of the frame 1. Two first adjusting blocks 32 and two second adjusting blocks 33 are each provided and are arranged in a one-to-one correspondence with the fixing blocks 31. The two ends of the clamp 34 are detachably connected to the two second adjusting blocks 33 respectively. In this way, the clamp 34 can move more stably and be fixed more stably.
[0038] Furthermore, the fixing block 31 is provided with a first sliding groove 311, and the first adjusting block 32 is provided with a second sliding groove 321. The first adjusting block 32 is slidably connected to the groove wall of the first sliding groove 311, and the second adjusting block 33 is slidably connected to the groove wall of the second sliding groove 321. The first adjusting block 32 moves within the first sliding groove 311, thereby adjusting the position of the second adjusting block 33, the clamp 34, and the sensor 35 in the first direction. The second adjusting block 33 moves within the second sliding groove 321, thereby adjusting the position of the clamp 34 and the sensor 35 in the second direction.
[0039] Furthermore, the shaft rotation accuracy testing machine also includes a first fastener 4 and a second fastener 5. The first fastener 4 is threadedly connected to the fixing block 31 and abuts against the first adjusting block 32. The second fastener 5 is threadedly connected to the first adjusting block 32 and abuts against the second adjusting block 33. Specifically, the first fastener 4 and the second fastener 5 can be bolts. When the first adjusting block 32 moves to a suitable position within the first slide groove 311, the first fastener 4 is threadedly connected to the fixing block 31 and abuts against the first adjusting block 32, allowing the first adjusting block 32 to remain in its current position. When the second adjusting block 33 moves to a suitable position within the second slide groove 321, the second fastener 5 is threadedly connected to the first adjusting block 32 and abuts against the second adjusting block 33, allowing the second adjusting block 33 to remain in its current position.
[0040] Furthermore, the clamp 34 is semi-circular, and multiple mounting holes 341 are spaced apart along the circumference of the clamp 34, in which the sensor 35 is mounted. In this way, the sensor 35 can detect the radial runout of the spindle assembly 2 in multiple directions.
[0041] Furthermore, the shaft rotation accuracy testing machine also includes a reference base 6, which is used as a reference for debugging the testing machine. This increases the accuracy of the test.
[0042] Furthermore, the spindle assembly 2 includes a rotating body 21, a bearing 22, and a bearing housing 23. The rotating body 21 is rotatably connected to the bearing housing 23 via the bearing 22. The bearing housing 23 is mounted on the frame 1. The sensor 35 detects the radial runout of the rotating body 21. Specifically, the rotating body 21 can be either a spindle or a bearing 22. The spindle drives the inner ring of the bearing 22 to rotate relative to the outer ring of the bearing 22, thereby realizing the rotation of the spindle.
[0043] Furthermore, the spindle assembly 2 also includes a handwheel 24 and a coupling 25. The handwheel 24 is fixed to the rotating body 21 via the coupling 25. By rotating the handwheel 24, the coupling 25 is driven to rotate, which in turn drives the spindle to rotate. The spindle then drives the inner ring of the bearing 22 to rotate relative to the outer ring of the bearing 22, thus enabling the spindle to rotate.
[0044] Furthermore, the spindle assembly 2 also includes an encoder 26, which is mounted on the frame 1 and used to measure the rotation angle of the rotating body 21. By setting the encoder 26, the rotation angle of the rotating body 21 can be detected, thereby enabling analysis of when the rotation center trajectory of the rotating body 21 deviates the most, and the motion accuracy of the spindle assembly 2 during rotational motion can be evaluated multiple times.
[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0046] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A shafting rotation accuracy test machine, characterized by, The utility model relates to a shafting rotation accuracy test experimental machine, including: Rack, main shaft assembly and test component, the main shaft assembly is rotatably connected to the rack, the test component includes fixed block, first adjusting block, second adjusting block, clamp and sensor, the fixed block is arranged in one side of the rack, the first adjusting block is slidably connected with the fixed block and moves along the first direction, the second adjusting block is slidably connected with the first adjusting block and moves along the second direction, the first direction and the second direction are arranged at the angle, the clamp is detachably connected with the second adjusting block, the sensor is installed to the clamp and is used for sensing the radial runout of the main shaft assembly.
2. The shafting rotation accuracy test machine according to claim 1, characterized in that, The test component is provided with a plurality of and is arranged at intervals along the extension direction of the main shaft assembly.
3. The shafting runout accuracy test machine of claim 2, wherein, The fixed block is provided with two and is symmetrically arranged on both sides of the rack, the first adjusting block and the second adjusting block are both provided with two and are correspondingly arranged with the fixed block, and the two ends of the clamp are detachably connected with the two second adjusting blocks respectively.
4. The shafting runout accuracy test stand of claim 1, wherein, The fixed block is provided with a first sliding slot, the first adjusting block is provided with a second sliding slot, the first adjusting block is slidably connected with the slot wall of the first sliding slot, and the second adjusting block is slidably connected with the slot wall of the second sliding slot.
5. The shafting runout accuracy test machine of claim 4, wherein, The shafting rotation accuracy test experimental machine further includes a first fastener and a second fastener, the first fastener is threadedly connected to the fixed block and abuts against the first adjusting block, and the second fastener is threadedly connected to the first adjusting block and abuts against the second adjusting block.
6. The shafting runout accuracy test stand of claim 1, wherein, The clamp is semicircular, a plurality of mounting holes are arranged at intervals in the circumferential direction of the clamp, and the sensor is mounted in the mounting hole.
7. The shafting runout accuracy test stand of claim 1 wherein, The shafting rotation accuracy test experimental machine further includes a reference seat for debugging the test experimental machine.
8. The shafting runout accuracy test stand of claim 1, wherein, The main shaft assembly includes a rotating body, a bearing and a bearing seat, the rotating body is rotatably connected to the bearing seat through the bearing, the bearing seat is installed on the rack, and the sensor detects the radial runout of the rotating body.
9. The shafting runout accuracy test stand of claim 8, wherein, The main shaft assembly further includes a hand wheel and a shaft coupling, the hand wheel is fixed to the rotating body through the shaft coupling.
10. The shafting runout accuracy test stand of claim 8 wherein, The main shaft assembly further includes an encoder, the encoder is installed on the rack and is used for measuring the rotation angle of the rotating body.