Machine tool experiment platform convenient to operate

Abstract

The utility model relates to a machine tool experiment platform convenient to operate, which comprises a driving frame used for driving a main shaft, a fixed frame arranged on one side of the driving frame, a plurality of working plates arranged on the fixed frame in a sliding manner, fixed seats symmetrically arranged on the working plates, a first arc-shaped plate driven by a first electric push rod arranged on the fixed seats, and a fixed rod arranged between the two fixed seats, second arc-shaped plates are symmetrically hinged to the fixing rod, a circle is defined by the two second arc-shaped plates, third arc-shaped plates driven by second electric push rods are arranged on the inner walls of the second arc-shaped plates, the first arc-shaped plates and the third arc-shaped plates are concentrically arranged, third electric push rods are hinged to the outer walls of the second arc-shaped plates, and the other ends of the third electric push rods are connected with the working plate. The fixing component can be used for spindles of various sizes, the spindle and the motor are connected conveniently and rapidly, operation is convenient, and the experiment efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of numerical control machine tools, and particularly relates to a machine tool experimental platform which is convenient to operate. Background Technique

[0002] The numerical control machine tool combines technologies such as machinery, automation, computer, and microelectronics, and solves the processing problems of complex, precise, and small-batch parts. It is a flexible and high-efficiency automated machine tool. The main shaft, as the main component of the machine tool processing, is an important part of the machine tool. The mechanical main shaft is one of the commonly used main shaft types. After the main shaft is produced or repaired and replaced, it is necessary to conduct a test experiment on the main shaft to ensure the machining accuracy of the parts. The utility model patent with the publication number of CN210512992U discloses a mechanical main shaft test platform. Although it can conduct experimental tests on multiple main shafts simultaneously by setting multiple fixing components, improving the efficiency, there are still the following problems: 1. The size of the fixing components is fixed, and when conducting test experiments on main shafts of different sizes, the fixing components need to be replaced, which is inconvenient to use and has low adaptability; 2. Multiple main shafts are all driven by the connection method of belts, and it is inconvenient to connect the main shaft with the motor, affecting the experimental efficiency; 3. The motor is arranged on the experimental platform, and the vibration generated by it will affect the rotating main shaft, resulting in inaccurate measurement results of the radial runout and axial runout of the main shaft. Content of the Utility Model

[0003] To solve the problems of the existing technology, the utility model proposes a machine tool experimental platform which is convenient to operate, and solves the problems of poor adaptability between the main shaft experimental platform and the main shaft size, inconvenient use, and low experimental efficiency in the existing technology.

[0004] The purpose of the utility model and the solution to its technical problems are achieved by adopting the following technical solutions. A machine tool experimental platform which is convenient to operate proposed according to the utility model includes a driving frame for driving the main shaft. A fixing frame is arranged on one side of the driving frame. A plurality of working plates are slidably arranged on the fixing frame. Fixing seats are symmetrically arranged on the working plates. A first arc-shaped plate driven by a first electric push rod is arranged on the fixing seat. A fixing rod is arranged between the two fixing seats. Second arc-shaped plates are symmetrically hinged on the fixing rod. The two second arc-shaped plates enclose a circle. A third arc-shaped plate driven by a second electric push rod is arranged on the inner wall of the second arc-shaped plate, and the first arc-shaped plate and the third arc-shaped plate are concentrically arranged. A third electric push rod is hinged on the outer wall of the second arc-shaped plate, and the other end of the third electric push rod is connected to the working plate.

[0005] The beneficial effect is that a second arc-shaped plate that can be opened and closed is set, and a first arc-shaped plate and a second arc-shaped plate that can be telescoped are set, which can adjust the extended lengths of the first arc-shaped plate and the second arc-shaped plate according to the size of the main shaft, and then clamp the main shaft. There is no need to replace the fixing components, which is convenient to operate and use, and is suitable for experimental use of various main shafts with different sizes.

[0006] Furthermore, a main gear driven by a motor is provided on the driving frame. A gantry is provided on one side of the output end of the motor. A rotating sleeve is provided inside the gantry through a connecting rod. A limiting sleeve is rotatably arranged inside the rotating sleeve. A driven gear meshing with the main gear is provided on the side of the limiting sleeve close to the motor. An annular chute is provided on the inner wall on the other side of the limiting sleeve. A plurality of connecting shafts are slidably arranged in the chute. A spring rod is provided on the connecting shaft. A limiting shaft for limiting the main shaft is provided at the end of the spring rod. An external thread is provided on the outer wall of the spring rod, and a nut is screwed on the external thread.

[0007] The beneficial effects are as follows: The limiting shaft that can move annularly is provided, and the extending distance of the limiting shaft can be adjusted. It is not only applicable to the connection of main shafts of various sizes, but also convenient for connecting the main shaft and the limiting sleeve, facilitating the operation of workers and improving the experimental efficiency. At the same time, the driving frame and the fixing frame are separately arranged, which can reduce the influence of the vibration generated by the motor on the operation of the main shaft, improve the measurement accuracy of the radial runout and axial runout of the main shaft, and make the experimental results more accurate.

[0008] Furthermore, a bolt is slidably arranged on the working plate, and a plurality of pin holes matching with the bolt are provided on the fixing frame.

[0009] The beneficial effects are as follows: It is convenient to limit the working plate, thereby stabilizing the position of the main shaft and facilitating the operation.

[0010] Furthermore, a second electric push rod is provided on the outer wall of the second arc-shaped plate, and the output shaft of the second electric push rod penetrates into the second arc-shaped plate.

[0011] The beneficial effects are as follows: It can expand the stroke range of the second electric push rod in the second arc-shaped plate, further expand the size range of the main shaft that can be fixed, and improve the applicability.

[0012] Furthermore, a chute is provided on the fixing frame, and a limiting slider is provided at the lower end of the working plate. The limiting slider is slidably arranged in the chute.

[0013] The beneficial effects are as follows: It can ensure that the working plate slides stably, avoid driving the main shaft to be skewed, and affect the experimental results.

[0014] In summary, in the present utility model, the adjustable first arc-shaped plate, second arc-shaped plate and limiting shaft are provided, which can fix and connect main shafts of different sizes. The limiting sleeve and the main shaft are connected in a clamping manner, and the operation is convenient. At the same time, the driving frame and the fixing frame are separately arranged, reducing the influence of the motor on the experimental results. It is not only convenient to operate and has strong applicability, but also ensures the accuracy of the experimental results.

[0015] The above description is only an overview of the technical solution of the present utility model. In order to better understand the technical means of the present utility model, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the following specific preferred embodiments are given and described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the fixing bracket in the present utility model;

[0017] Figure 2 is a schematic diagram of the driving bracket in the present utility model;

[0018] Figure 3 is Figure 1 a side view schematic diagram of

[0019] Figure 4 is a right side view schematic diagram of the portal frame;

[0020] Figure 5 is a left side view schematic diagram of the portal frame;

[0021] Figure 6 is Figure 4 a cross-sectional view schematic diagram of the limit sleeve in

[0022] Figure 7 a schematic diagram of the connecting shaft, the spring rod and the limit shaft;

[0023] Figure 8 is a connection schematic diagram of the second arc-shaped plate and the fixed rod;

[0024] Figure 9 is a schematic diagram of the internal structure of the spring rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0026] An embodiment of a machine tool experimental platform that is convenient to operate:

[0027] As Figures 1 to 3 , a machine tool experimental platform that is convenient to operate includes a driving bracket 1 for driving the main shaft. A fixing bracket 7 is provided on one side of the driving bracket 1. The fixing bracket 7 is used for limiting the main shaft. A plurality of working plates 9 are slidably provided on the fixing bracket 7. In this embodiment, there are two working plates 9. The working plates 9 are used to drive the main shaft to move and are thus connected to the driving bracket 1. Fixed seats 10 are symmetrically provided on the working plates 9. A first arc-shaped plate 19 driven by a first electric push rod 28 is provided on the fixed seats 10. The first arc-shaped plate 19 is used to support the bottom of the main shaft. A fixed rod 15 is provided between the two fixed seats 10. Second arc-shaped plates 11 are symmetrically hinged on the fixed rod 15. As Figure 8As shown in the figure, two second arc-shaped plates 11 are hinged to the fixing rod 15 and are in a separated state. When the two second arc-shaped plates 11 are closed, they form a circle. The second arc-shaped plates 11 are mainly used to support the third arc-shaped plate 18. On the inner wall of the second arc-shaped plate 11, there is a third arc-shaped plate 18 driven by a second electric push rod 12. The first arc-shaped plate 19 and the third arc-shaped plate 18 are concentrically arranged. The third arc-shaped plate 18 is used to press the upper part of the main shaft, and cooperate with the first arc-shaped plate 19 to achieve the purpose of limiting the main shaft. On the outer wall of the second arc-shaped plate 11, there is a hinge block 13, and a third electric push rod 14 is hinged on the hinge block 13. The third electric push rod 14 is used to open and close the second arc-shaped plate 11, so that the main shaft can be directly placed on the first arc-shaped plate 19 from above. The other end of the third electric push rod 14 is connected to the working plate 9;

[0028] The working process of this embodiment: First, control the third electric push rod 14 to contract, drive the two second arc-shaped plates 11 to rotate away from each other to open them. Then, according to the length of the main shaft, move the working plate 9, place the main shaft on the first arc-shaped plate 19. At the same time, the end of the main shaft connected to the motor faces the driving frame 1 and extends out a part. Then, control the third electric push rod 14 to extend, close the two second arc-shaped plates 11. Then, control the second electric push rod 12 to extend, drive the third arc-shaped plate 18 to move, press the main shaft, and lock the main shaft. Then, move the two working plates 9 at the same time, drive the main shaft to move, make the connection end of the main shaft close to the driving frame 1, and then connect the main shaft and the motor 2.

[0029] In this embodiment, as Figures 3 to 7 , on the driving frame 1, there is a main gear 3 driven by a motor 2. On one side of the output end of the motor 2, there is a portal frame 5. Inside the portal frame 5, there is a rotating sleeve 27 through a connecting rod 21. A limiting sleeve 6 is rotatably arranged inside the rotating sleeve 27. The diameter of the limiting sleeve 6 should be larger than the diameter of the connection end of the main shaft used conventionally, to prevent the main shaft from not being inserted or the nut 23 from being difficult to tighten. At the same time, the limiting sleeve 6 should be concentric with the second arc-shaped plate 11 for convenient connection with the main shaft. On the side of the limiting sleeve 6 close to the motor 2, there is a driven gear 4 meshing with the main gear 3. On the inner wall of the other side of the limiting sleeve 6, there is an annular sliding groove 20. The cross-section of the sliding groove 20 is T-shaped. A number of connecting shafts 26 are slidably arranged in the sliding groove 20. A spring rod 22 is arranged on the connecting shaft 26. The connecting shaft 26 and the spring rod 22 are connected to form a T shape. The end of the spring rod 22 is provided with a limiting shaft 25 for limiting the main shaft. Generally, a key groove or a threaded hole is provided in the axial direction of the connection end of the main shaft. If not, holes or key grooves need to be machined, which does not affect the normal use of the main shaft. An external thread 24 is provided on the outer wall of the spring rod 22, and a nut 23 is screwed on the external thread 24. When the nut 23 rotates upward and contacts the inner wall of the limiting sleeve 6, friction is generated, so that the nut 23 is tightened and the spring rod 22 is limited. On the contrary, when the nut 23 is loosened, the spring rod 22 can move, as Figure 9As shown, the spring rod 22 includes an upper rod portion 30 and a lower rod portion 31. A vertically extending slot is provided in the upper rod portion 30. The upper end of the lower rod portion 31 is inserted into the slot, and a spring 29 is clamped between the upper end of the lower rod portion 31 and the top of the slot. A limiting block 32 that is slidably connected to the inner wall of the slot is also provided at the upper end of the lower rod portion 31, which can prevent the lower rod portion 31 from falling off the upper rod portion 30. A limiting shaft 25 is provided at the lower end of the lower rod portion 31. When the lower rod portion 31 is pressed upward, the spring 29 contracts and extends when released, driving the limiting shaft 25 to complete the limiting:

[0030] Working process of this embodiment: First, determine the position of the hole or keyway at the connecting end of the main shaft. Then, move the spring rod 22 through the cooperation of the connecting shaft 26 and the sliding slot 20 so that it corresponds to the position of the hole or keyway on the main shaft. Then, move the working plate 9 to drive the main shaft to move. At the same time, use a slightly longer and harder tool, such as a stainless steel straight ruler, to press against the limiting shaft 25 to contract the spring rod 22. Then, through the extension or contraction of the first electric push rod 28 and the second electric push rod 12, drive the main shaft to rise or fall so that the main shaft and the limiting sleeve 6 are in a concentric position. Then, insert the connecting end of the main shaft into the limiting sleeve 6. Then, according to the position of the hole or keyway on the main shaft, move the spring rod 22 by tool or manually so that the limiting shaft 25 is inserted into the hole or keyway on the main shaft. Then, tighten the nut 23 to fix the position of the spring rod 22, and the connection between the main shaft and the limiting sleeve 6 is completed. The slave gear 4, the main gear 3 are connected to the motor 2.

[0031] In this embodiment, a pin 17 is slidably provided on the working plate 9, and a number of pin holes cooperating with the pin 17 are provided on the fixing frame 7, which is convenient for limiting the working plate 9, thereby stabilizing the position of the main shaft and facilitating operation.

[0032] In this embodiment, a second electric push rod 12 is provided on the outer wall of the second arc-shaped plate 11, and the output shaft of the second electric push rod 12 penetrates into the second arc-shaped plate 11, which can expand the stroke range of the second electric push rod 12 in the second arc-shaped plate 11, further expand the size range of the main shaft that can be fixed, and improve the applicability.

[0033] In this embodiment, a sliding slot 8 is provided on the fixing frame 7, and a limiting slider 16 is provided at the lower end of the working plate 9. The limiting slider 16 is slidably arranged in the sliding slot 8, which can ensure that the working plate 9 slides stably and avoid driving the main shaft to skew, affecting the experimental results.

[0034] The above is only a preferred embodiment of the present invention. Any person skilled in the relevant art, without departing from the scope of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A machine tool experimental platform that is easy to operate, comprising a drive frame (1) for driving a spindle, characterized in that: A fixing frame (7) is provided on one side of the driving frame (1). A plurality of working plates (9) are slidably provided on the fixing frame (7). A fixing seat (10) is symmetrically provided on the working plate (9). A first arc-shaped plate (19) driven by a first electric push rod (28) is provided on the fixing seat (10). A fixing rod (15) is provided between the two fixing seats (10). A second arc-shaped plate (11) is symmetrically hingedly provided on the fixing rod (15). The two second arc-shaped plates (11) form a circle. A third arc-shaped plate (18) driven by a second electric push rod (12) is provided on the inner wall of the second arc-shaped plate (11). The first arc-shaped plate (19) and the third arc-shaped plate (18) are concentrically arranged. A third electric push rod (14) is hingedly provided on the outer wall of the second arc-shaped plate (11). The other end of the third electric push rod (14) is connected to the working plate (9).

2. The convenient-to-operate machine tool experimental platform according to claim 1, characterized in that: A main gear (3) driven by a motor (2) is provided on the driving frame (1), a gantry frame (5) is provided on one side of the output end of the motor (2), a rotating sleeve (27) is provided on the inner side of the gantry frame (5) through a connecting rod (21), a limiting sleeve (6) is rotatably provided in the rotating sleeve (27), a slave gear (4) meshing with the main gear (3) is provided on the side of the limiting sleeve (6) close to the motor (2), an annular slide groove (20) is provided on the inner wall of the other side of the limiting sleeve (6), a plurality of connecting shafts (26) are slidably provided in the slide groove (20), a spring rod (22) is provided on the connecting shaft (26), a limiting shaft (25) for limiting the main shaft is provided at the end of the spring rod (22), an external thread (24) is provided on the outer wall of the spring rod (22), and a nut (23) is screwed on the external thread (24).

3. The machine tool experimental platform convenient to operate according to claim 1, characterized in that: A latch (17) is slidably provided on the working plate (9), and a plurality of pin holes cooperating with the latch (17) are provided on the fixing frame (7).

4. The convenient-to-operate machine tool experimental platform according to claim 1, characterized in that: A second electric push rod (12) is provided on the outer wall of the second arc-shaped plate (11), and an output shaft of the second electric push rod (12) extends through the second arc-shaped plate (11).

5. The machine tool experimental platform convenient to operate according to claim 1, characterized in that: A slide groove (8) is provided on the fixed frame (7), and a limit slider (16) is provided at the lower end of the working plate (9), and the limit slider (16) is slidably arranged in the slide groove (8).

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