Batch testing device for motorized spindles

Abstract

The utility model relates to the technical field of testing devices, and discloses an electric spindle batch testing device which comprises a conveying rack, and a conveying roller body is arranged on the inner wall of the conveying rack. According to the utility model, by starting the hydraulic telescopic rod, the hydraulic telescopic rod drives the clamping frame to move downwards so as to drive the plurality of clamping rods to clamp the motorized spindle, and when the plurality of clamping rods clamp the motorized spindle, the clamping rods which are not in contact with the motorized spindle can limit the motorized spindle, so that the motorized spindle cannot move when being tested; the electric jack is started, the electric jack can drive the rigidity test block to carry out rigidity test on the outer wall of the electric spindle, and the hydraulic telescopic rod drives the lifting frame to reset after the test is finished, so that the electric spindle does not need to be manually operated, and the electric spindle can be clamped when batch test is carried out on the electric spindle. And great convenience is brought to workers, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of testing devices, specifically a batch testing device for electric spindles. Background Technology

[0002] An electric spindle is an innovative technology that integrates a machine tool spindle and a spindle motor into one unit. It is mainly used in the field of CNC machine tools. By directly installing the motor inside the spindle, it achieves mechatronics design, thereby simplifying the transmission structure of traditional machine tools. The electric spindle batch testing device is a special equipment used to test the performance of electric spindles. It features high testing accuracy, good repeatability, stable operation, high testing efficiency, and long service life. In engineering practice, machine tool failures due to spindle fatigue fracture are extremely rare. However, there are many cases where machine tools cannot meet production requirements due to excessive deformation of the spindle under cutting forces or the generation of self-excited vibrations during cutting.

[0003] To address the aforementioned issues, Chinese Patent Publication No. CN205719522U discloses a static stiffness testing device for an electric spindle. This device uses a fixing clamp to firmly clamp one end of the electric spindle, thus fixing it to a testing platform. A hydraulic jack is used to apply force, and a force sensor collects data. The force application points are located directly below (radial stiffness) and directly in front (axial stiffness) of the electric spindle. Eddy current displacement sensors are used to measure the deformation of the electric spindle, with displacement measurement points located directly above (radial stiffness) and directly in front (axial stiffness) of the spindle. The force application process should be slow, and once the maximum allowable displacement is reached, the force should be immediately stopped and maintained in this state for 1-2 minutes until the readings of all measuring instruments stabilize before unloading. The signals collected by the force sensor and the eddy current displacement sensor are input into a computer, and curve fitting is performed on the test data to obtain the static stiffness curve.

[0004] While the comparative patent solves the problem of testing the stiffness of the electric spindle, it requires manual clamping of one end of the electric spindle inside the fixture. After the test, it needs to be manually removed. This causes significant trouble for workers and reduces work efficiency when batch testing electric spindles.

[0005] Regarding the aforementioned technologies, the device has the drawback that it requires manual insertion of one end of the electric spindle into the fixture to clamp it, and manual removal is required after testing. This causes significant inconvenience for workers and reduces work efficiency when performing batch testing of the electric spindle. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this utility model provides a batch testing device for electric spindles. This device eliminates the need for manual operation of the electric spindles, thus providing greater convenience and improving work efficiency when conducting batch testing. It solves the problem of manually clamping one end of the electric spindle inside the fixture and then manually removing it after testing, which causes significant inconvenience and reduces work efficiency when conducting batch testing of electric spindles.

[0008] (II) Technical Solution

[0009] To achieve the goal of eliminating the need for manual operation of the electric spindle and thus greatly improving work efficiency during batch testing of the electric spindle, this utility model provides the following technical solution: A batch testing device for electric spindles, comprising a conveyor frame, a conveyor roller body on the inner wall of the conveyor frame, a testing frame fixedly connected to the top of the conveyor frame, a hydraulic telescopic rod on the inner top wall of the testing frame, a lifting frame fixedly connected to the bottom of the hydraulic telescopic rod, an electric jack fixedly connected to the inner top wall of the lifting frame, a rigid test block fixedly connected to one end of the electric jack, a clamping component on the inner wall of the lifting frame, and a testing component on the top of the conveyor frame.

[0010] As a preferred embodiment of this utility model, the conveyor frame is a "U"-shaped structure, the test frame is an inverted "U"-shaped structure, and the lifting frame has the same shape as the test frame.

[0011] As a preferred technical solution of this utility model, the clamping component includes a clamping frame, one side of which is fixedly connected to the inner wall of the lifting frame, a limiting frame is fixedly connected to the top of the clamping frame, a spring is fixedly connected to the inner top wall of the limiting frame, a clamping rod is fixedly connected to the bottom of the spring, and a limiting rod is fixedly connected to the top of the clamping rod.

[0012] As a preferred embodiment of this utility model, the shape of the clamping frame is the same as that of the lifting frame, and a channel is machined on the top of the clamping frame, and the channel is slidably sleeved with the clamping rod.

[0013] As a preferred embodiment of this utility model, the top of the limiting rod extends to the outside of the limiting frame, and a limiting plate is fixedly connected to the top of the limiting rod.

[0014] As a preferred embodiment of this utility model, the testing component includes a testing frame, a testing module is fixedly connected to the inner top wall of the testing frame, an alarm light is fixedly connected to the top of the testing frame, and an indicator light is fixedly connected to the top of the testing frame.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a batch testing device for electric spindles, which has the following beneficial effects:

[0017] 1. The conveyor roller body is an intermittent conveyor roller. When the electric spindle is being tested, the conveyor roller body stops conveying. After the electric spindle is tested, the conveyor roller body resumes conveying. The electric spindle is placed on the conveyor roller body, and the rotation of the conveyor roller body can convey the electric spindle. When the electric spindle passes the test frame, the hydraulic telescopic rod is activated. The hydraulic telescopic rod drives the clamping frame to move downward, which in turn drives multiple clamping rods to clamp the electric spindle. When multiple clamping rods clamp the electric spindle, the clamping rods that are not in contact with the electric spindle can limit the electric spindle, so that the electric spindle cannot move during testing, thus achieving clamping of the electric spindle. The electric jack is activated, and the electric jack drives the rigid test block to perform a rigidity test on the outer wall of the electric spindle. After the test is completed, the hydraulic telescopic rod drives the lifting frame to reset. This device does not require manual operation of the electric spindle, thus bringing great convenience to the staff and improving work efficiency when batch testing electric spindles.

[0018] 2. After the electric spindle has passed through the inspection frame, the testing module will test the passing electric spindle. The testing module can test the degree of bending on the surface of the electric spindle. When the degree of bending of the electric spindle is greater than the data set by the testing module, the alarm light will sound, indicating that the rigidity test of the electric spindle is unqualified. Conversely, the indicator light will turn green, indicating that the rigidity test of the electric spindle is qualified. This further meets the usage requirements of the device and is therefore worthy of promotion. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a batch testing device for electric spindles.

[0020] Figure 2 This is a side view of the test rack in this application;

[0021] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0022] Figure 4 This is a side view of the testing frame in this application.

[0023] In the diagram: 1. Conveyor frame; 2. Conveyor roller body; 3. Test frame; 4. Hydraulic telescopic rod; 5. Lifting frame; 6. Electric jack; 7. Rigid test block; 8. Clamping frame; 81. Limiting frame; 82. Limiting rod; 83. Clamping rod; 84. Spring; 85. Limiting plate; 9. Detection frame; 91. Test module; 92. Alarm light; 93. Indicator light. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] Reference Figure 1-4 This is the first embodiment of the present invention, which provides a batch testing device for electric spindles, including a conveyor frame 1. The inner wall of the conveyor frame 1 is provided with a conveyor roller body 2, which is an intermittent conveyor roller. When the electric spindle is being tested, the conveyor roller body 2 will stop conveying. After the electric spindle is tested, the conveyor roller body 2 will continue to convey. A testing frame 3 is fixedly connected to the top of the conveyor frame 1. A hydraulic telescopic rod 4 is provided on the inner top wall of the testing frame 3. A lifting frame 5 is fixedly connected to the bottom of the hydraulic telescopic rod 4. An electric jack 6 is fixedly connected to the inner top wall of the lifting frame 5. A rigid test block 7 is fixedly connected to one end of the electric jack 6. A clamping component is provided on the inner wall of the lifting frame 5. A testing component is provided on the top of the conveyor frame 1.

[0027] Furthermore, the conveyor frame 1 has a "U" shaped structure, the test frame 3 has an inverted "U" shaped structure, the lifting frame 5 has the same shape as the test frame 3, the electric spindle is placed on the conveyor roller body 2, and the rotation of the conveyor roller body 2 can convey the electric spindle.

[0028] Reference Figure 1-3 The clamping component includes a clamping frame 8, one side of which is fixedly connected to the inner wall of the lifting frame 5. A limit frame 81 is fixedly connected to the top of the clamping frame 8. A spring 84 is fixedly connected to the inner top wall of the limit frame 81. A clamping rod 83 is fixedly connected to the bottom of the spring 84. A limit rod 82 is fixedly connected to the top of the clamping rod 83. There are multiple clamping rods 83. When multiple clamping rods 83 clamp the electric spindle, the clamping rods 83 that do not contact the electric spindle can limit the electric spindle. As a result, the electric spindle cannot move during testing, thus achieving clamping of the electric spindle.

[0029] Furthermore, the shape of the clamping frame 8 is the same as that of the lifting frame 5. The top of the clamping frame 8 is machined with a channel, and the channel is slidably connected to the clamping rod 83. The clamping frame 8 can clamp electric spindles of different diameters, thereby improving the applicability of the device.

[0030] Furthermore, the top of the limiting rod 82 extends to the outside of the limiting frame 81, and the top of the limiting rod 82 is fixedly connected to the limiting plate 85. The limiting plate 85 can play a limiting role, so that the limiting rod 82 will not detach from the limiting frame 81.

[0031] Reference Figure 1-4 The testing components include a testing frame 9, a testing module 91 fixedly connected to the inner top wall of the testing frame 9, an alarm light 92 fixedly connected to the top of the testing frame 9, and an indicator light 93 fixedly connected to the top of the testing frame 9. After the electric spindle has been tested, it will be conveyed through the testing frame 9, and then the testing module 91 will test the electric spindle. The testing module 91 can test the degree of bending of the electric spindle surface. When the degree of bending of the electric spindle is greater than the data set by the testing module 91, the alarm light 92 will sound an alarm, indicating that the rigidity test of the electric spindle is unqualified. Conversely, the indicator light 93 will emit a green light, indicating that the rigidity test of the electric spindle is qualified.

[0032] During use, the conveyor roller body 2 is an intermittent conveyor roller. When the electric spindle is being tested, the conveyor roller body 2 will stop conveying. After the electric spindle is tested, the conveyor roller body 2 will continue to convey. The electric spindle is placed on the conveyor roller body 2, and the rotation of the conveyor roller body 2 can convey the electric spindle.

[0033] When the electric spindle passes the test frame 3, the hydraulic telescopic rod 4 is activated. The hydraulic telescopic rod 4 drives the clamping frame 8 to move downward, which in turn drives multiple clamping rods 83 to clamp the electric spindle. When multiple clamping rods 83 clamp the electric spindle, the clamping rods 83 that are not in contact with the electric spindle can limit the electric spindle, so that the electric spindle cannot move during the test, thus achieving clamping of the electric spindle. The electric jack 6 is activated, and the electric jack 6 will drive the rigid test block 7 to perform a rigidity test on the outer wall of the electric spindle. After the test is completed, the hydraulic telescopic rod 4 drives the lifting frame 5 to reset.

[0034] After the electric spindle has been inspected, it will be conveyed through the inspection frame 9, and then the testing module 91 will test the electric spindle. The testing module 91 can test the degree of bending of the electric spindle surface. When the degree of bending of the electric spindle is greater than the data set by the testing module 91, the alarm light 92 will sound an alarm, indicating that the rigidity test of the electric spindle is unqualified. Conversely, the indicator light 93 will light up green, indicating that the rigidity test of the electric spindle is qualified.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An electric spindle batch testing device comprising a conveyor frame (1), characterized by: The inner wall of the conveyor frame (1) is provided with a conveyor roller body (2), the top of the conveyor frame (1) is fixedly connected with a test frame (3), the inner top wall of the test frame (3) is provided with a hydraulic telescopic rod (4), the bottom of the hydraulic telescopic rod (4) is fixedly connected with a lifting frame (5), the inner top wall of the lifting frame (5) is fixedly connected with an electric jack (6), one end of the electric jack (6) is fixedly connected with a rigid test block (7), the inner wall of the lifting frame (5) is provided with a clamping component, and the top of the conveyor frame (1) is provided with a test component.

2. A kind of electric main shaft batch testing device according to claim 1, wherein: The conveyor frame (1) has a "U" shape, the test frame (3) has an inverted "U" shape, and the lifting frame (5) has the same shape as the test frame (3).

3. A kind of electric main shaft batch testing device according to claim 1, wherein: The clamping component includes a clamping frame (8), one side of which is fixedly connected to the inner wall of the lifting frame (5). A limit frame (81) is fixedly connected to the top of the clamping frame (8), and a spring (84) is fixedly connected to the inner top wall of the limit frame (81). A clamping rod (83) is fixedly connected to the bottom of the spring (84), and a limit rod (82) is fixedly connected to the top of the clamping rod (83).

4. A bulk testing device for an electric spindle as claimed in claim 3, characterized in that: The shape of the clamping frame (8) is the same as that of the lifting frame (5). The top of the clamping frame (8) is machined with a channel, and the channel is slidably connected to the clamping rod (83).

5. A bulk testing device for an electric spindle as claimed in claim 3, characterized in that: The top of the limiting rod (82) extends to the outside of the limiting frame (81), and the top of the limiting rod (82) is fixedly connected to the limiting plate (85).

6. A kind of electric main shaft batch test device according to claim 1, wherein: The testing component includes a testing frame (9), a testing module (91) is fixedly connected to the inner top wall of the testing frame (9), an alarm light (92) is fixedly connected to the top of the testing frame (9), and an indicator light (93) is fixedly connected to the top of the testing frame (9).

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