A rotary table for a numerical control machine tool and its rotary control method

Abstract

The present invention discloses a rotary table for a numerical control machine tool and its rotary control method, belonging to the technical field of related equipment for numerical control machine tools, including: a bottom plate; fixed rods, four fixed rods are provided, and the four fixed rods are all fixedly connected to the bottom plate, the upper ends of the four fixed rods are fixedly connected with a top plate, and a sliding hole is opened at the upper end of the top plate; a workbench main body, the workbench main body is arranged on the top plate; a bearing plate, the bearing plate is arranged on the bottom plate. In the present invention, the rotation of the first rotating rod drives the workbench main body to rotate, so as to facilitate the rotation of the workbench main body. The rotation of the turntable is limited by the clamping connection between the limit friction plate and the limit groove, thereby restricting the rotation of the first rotating rod, and preventing the problem that the workbench main body continues to rotate due to inertia when it stops rotating, and solving the existing safety hazards.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment related to numerical control machine tools, and more specifically, to a rotary table for a numerical control machine tool and a rotary control method therefor. Background Technique

[0002] A numerical control machine tool is short for a numerically controlled machine tool, which is an automated machine tool equipped with a program control system. This control system can logically process a program with control codes or other symbolic instructions, decode it, represent it with coded numbers, input it into the numerical control device through an information carrier, and after arithmetic processing, the numerical control device issues various control signals to control the actions of the machine tool, and automatically processes parts according to the shape and size required by the drawing. A rotary table, abbreviated as a turntable, refers to a machine tool accessory with a rotatable tabletop, used for clamping workpieces and realizing rotation and indexing positioning. It can be divided into two categories: general turntables and precision turntables according to different functions.

[0003] Some patent documents of rotary tables for numerical control machine tools are disclosed in the prior art. The Chinese patent application with the application number CN202220739220.6 discloses a rotary table for a numerical control machine tool, which relates to the application field of numerical control machine tools. It includes a machine body, a motor is fixedly connected to the right side inside the machine body, the output shaft of the motor is fixedly connected to a threaded rod, a first gear is fixedly sleeved on the left side of the threaded rod, a moving plate is threadedly sleeved on the threaded rod, a connecting rod is rotatably connected to the top of the moving plate, a first bevel gear is fixedly sleeved below the connecting rod, a workbench is fixedly connected to the top of the connecting rod, and a limiting mechanism is arranged on the left side of the threaded rod; a driven rod is rotatably connected to the upper left side inside the machine body, a second gear is fixedly sleeved on the left side of the driven rod, and the second gear is meshed with the first gear for transmission; this device can not only perform automatic conveying processing, but also perform automatic rapid cyclic rotation processing, effectively improving the rotation effect and efficiency of the workbench of the numerical control machine tool.

[0004] In the above patent, there is no limiting mechanism to limit the workbench when its rotation is completed. The gravity of the workbench is relatively large. When the rotation of the workbench is completed, it will continue to rotate due to inertia. The lack of a limiting mechanism will cause the parts to wear more, and there may be a problem that the workbench continues to rotate after the rotary work is completed, posing a certain degree of safety hazard. For this reason, we propose a rotary table for a numerical control machine tool and a rotary control method therefor. Summary of the Invention

[0005] 1. Technical Problems to be Solved

[0006] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a rotary table for a numerical control machine tool and its rotary control method. The present invention drives the rotation of the workbench main body by the rotation of the first rotating rod, so as to facilitate the rotation of the workbench main body. The rotation of the first rotating rod is limited by the clamping of the limiting friction plate and the limiting groove, thereby preventing the problem that the workbench main body continues to rotate due to inertia when it stops rotating, and solving the potential safety hazard existing therein.

[0007] 2. Technical solution

[0008] To solve the above problems, the present invention adopts the following technical solutions:

[0009] A rotary table for a numerical control machine tool and its rotary control method, including:

[0010] Base plate;

[0011] Fixed rods. Four fixed rods are provided, and the four fixed rods are all fixedly connected to the base plate. The upper ends of the four fixed rods are fixedly connected with a top plate, and a sliding hole is opened at the upper end of the top plate;

[0012] Workbench main body, which is arranged on the top plate;

[0013] Carrier plate, which is arranged on the base plate;

[0014] First rotating rod, which is rotatably connected to the upper end of the carrier plate, and the upper end of the first rotating rod is fixedly connected to the workbench main body. The first rotating rod is slidably connected in the sliding hole;

[0015] Turntable, which is fixedly connected to the surface of the first rotating rod, and a limiting groove is opened on the surface of the turntable;

[0016] Rotary mechanism, which is arranged on the carrier plate and is connected to the first rotating rod;

[0017] Limiting mechanism, which is arranged on the carrier plate and is connected to both the limiting groove and the rotary mechanism.

[0018] As a preferred solution of the present invention, the rotary mechanism includes a first bevel gear, a support plate, a second rotating rod, a second bevel gear and a servo motor. The first bevel gear is fixedly connected to the surface of the first rotating rod. Two support plates are provided, and the two support plates are both fixedly connected to the upper end of the carrier plate. The second rotating rod is rotatably connected between the two support plates. The second bevel gear passes through the support plate movably, and the second bevel gear is fixedly connected to the second rotating rod. The second bevel gear meshes with the first bevel gear. The servo motor is installed at the right end of the support plate, and the output end of the servo motor passes through the support plate movably, and the output end of the servo motor is fixedly connected to the second rotating rod.

[0019] As a preferred embodiment of the present invention, the limiting mechanism includes an arc-shaped groove, a linkage assembly, a control assembly, and two sets of limiting assemblies. The arc-shaped groove is formed at the upper end of the bearing plate. The linkage assembly, the control assembly, and the two sets of limiting assemblies are all arranged on the bearing plate. The linkage assembly is connected to the control assembly and the second rotating rod. The control assembly is connected to both sets of limiting assemblies. Both sets of the limiting assemblies are connected to the limiting groove.

[0020] As a preferred embodiment of the present invention, each set of the limiting assemblies includes a positioning plate, a guide rod, a spring, an arc-shaped clamping plate, a limiting friction plate, and a limiting hole. The positioning plate is fixedly connected to the upper end of the bearing plate. There are two guide rods, two springs, and two limiting holes. The two guide rods are fixedly connected to the positioning plate. The two springs are fixedly connected to the positioning plate. The arc-shaped clamping plate is fixedly connected to the two springs. The limiting friction plate is fixedly connected inside the arc-shaped clamping plate, and the limiting friction plate is clamped with the limiting groove. The two limiting holes are formed in the arc-shaped clamping plate, and the two limiting holes are respectively in sliding fit with the two guide rods.

[0021] As a preferred embodiment of the present invention, the linkage assembly includes a third rotating rod, a pulley, and a transmission belt. The third rotating rod is rotatably connected to the left end of the support plate. There are two pulleys. The two pulleys are respectively fixedly connected to the surfaces of the third rotating rod and the second rotating rod. The transmission belt is sleeved on the surfaces of the two pulleys, and the two pulleys are in transmission cooperation through the transmission belt.

[0022] As a preferred embodiment of the present invention, the control assembly includes a connecting rope, a guide wheel, a winding wheel, a fixed seat, a second cylinder, and a positioning block. There are two connecting ropes, two second cylinders, and two positioning blocks. The fixed seat is fixedly connected to the left end of the third rotating rod. The two second cylinders are respectively fixedly connected to the front and rear ends of the fixed seat. The two positioning blocks are respectively fixedly connected to the extending ends of the two second cylinders. The winding wheel is slidably connected in the arc-shaped groove, and the winding wheel is clamped with the two positioning blocks. There are two connecting ropes. One end of each of the two connecting ropes is fixedly connected to the surface of the winding wheel. The other ends of the two connecting ropes are respectively fixedly connected to the two arc-shaped clamping plates, and the two connecting ropes respectively pass through the two positioning plates movably. There are two sets of guide wheels. Both sets of guide wheels are rotatably connected to the bearing plate, and the two sets of guide wheels are in sliding fit with the two connecting ropes. Each set of guide wheels has two.

[0023] As a preferred embodiment of the present invention, two first fixing plates are fixedly connected to the upper end of the bottom plate. The left ends of the two first fixing plates are respectively provided with a first cylinder. The front and rear ends of the bearing plate are respectively fixedly connected with a second fixing plate. The extending ends of the two first cylinders are respectively fixedly connected to the two second fixing plates.

[0024] As a preferred embodiment of the present invention, a control panel is installed at the front end of the bottom plate, and the control panel is electrically connected to the two first cylinders, the servo motor, and the two second cylinders.

[0025] As a preferred embodiment of the present invention, guard plates are fixedly connected to the upper ends of the two positioning plates, the two guard plates are slidably matched with the two arc-shaped clamping plates, a baffle is installed at the upper end of the bearing plate, and the servo motor movably penetrates through the baffle.

[0026] A rotation control method for a rotary table of a numerical control machine tool includes the following steps:

[0027] S1. When it is necessary to adjust the rotation angle of the workbench main body, start the rotation of the output end of the servo motor. The rotation of the output end of the servo motor drives the second rotating rod to rotate. The rotation of the second rotating rod drives the second bevel gear to rotate. Since the second bevel gear rotates with the first bevel gear, the rotation of the second bevel gear drives the first bevel gear to rotate, and drives the first rotating rod to rotate through the rotation of the first bevel gear. The rotation of the first rotating rod drives the workbench main body to rotate, so as to adjust the angle of the workbench main body and make the workbench main body rotate. When the rotation angle of the workbench main body is adjusted, the servo motor can be turned off.

[0028] S2. When the above-mentioned second rotating rod rotates, the second rotating rod drives the third rotating rod to rotate through the transmission cooperation of the pulley and the transmission belt. The rotation of the third rotating rod drives the fixed seat to rotate, and drives the positioning block to rotate through the rotation of the fixed seat. Since the winding wheel is clamped and fixed by the two positioning blocks, the rotation of the third rotating rod drives the winding wheel to rotate through the positioning block. The rotation of the winding wheel causes the two connecting ropes to wind around the surface of the winding wheel. When the connecting rope winds around the surface of the winding wheel, it will pull the arc-shaped clamping plate to move. The movement of the arc-shaped clamping plate compresses the spring. The movement of the arc-shaped clamping plate also makes the arc-shaped clamping plate slide on the surface of the guide rod, and the movement of the arc-shaped clamping plate makes the limit friction plate disengage from the limit groove. When the limit friction plate is not clamped with the limit groove, it is convenient for the first rotating rod to rotate. After the rotation angle of the above-mentioned workbench main body is adjusted, the servo motor is turned off. After the servo motor is turned off, the third rotating rod also stops rotating. At this time, start the contraction of the extension ends of the two second cylinders through the control panel. The contraction of the extension ends of the second cylinders drives the positioning blocks to move. When the two positioning blocks are no longer clamped with the winding wheel, the connecting ropes on the surface of the winding wheel will reset through the elastic action of the spring. After the spring resets through its own elastic action, the spring will push the arc-shaped clamping plate and the limit friction plate to move. Through the movement of the limit friction plate, the limit friction plate is clamped in the limit groove. The rotation of the turntable is limited through the clamping of the limit friction plate and the limit groove, thereby restricting the rotation of the first rotating rod and preventing the problem that the workbench main body continues to rotate due to inertia when it stops rotating, and solving the existing safety hazard.

[0029] S3. When it is necessary to adjust the left - right position of the workbench main body, two first cylinders are simultaneously started through the control panel. The telescopic movement of the extension ends of the two first cylinders pushes the second fixed plate and the bearing plate to move. The movement of the bearing plate drives the workbench main body to move. At this time, the first rotating rod slides in the sliding hole. By controlling the telescopic movement of the extension end of the first cylinder, the left - right position of the workbench main body can be adjusted, optimizing the convenience of use.

[0030] 3. Beneficial effects

[0031] Compared with the prior art, the advantages of the present invention are as follows:

[0032] (1) In this solution, the rotation of the first rotating rod drives the rotation of the workbench main body to facilitate the rotation of the workbench main body. The rotation of the turntable is limited by the clamping of the limit friction plate and the limit groove, thereby restricting the rotation of the first rotating rod and preventing the problem that the workbench main body will continue to rotate due to inertia when it stops rotating, solving the existing safety hazard.

[0033] (2) In this solution, the installation of the first fixed plate is to facilitate the fixation of the first cylinder. The telescopic movement of the extension end of the first cylinder facilitates the pushing of the second fixed plate to move. The movement of the second fixed plate drives the bearing plate to move, and then the movement of the bearing plate drives the workbench main body to move, thereby adjusting the left - right position of the workbench main body.

[0034] (3) In this solution, the control panel is for facilitating the electrical connection with the first cylinder, the servo motor, and the second cylinder, and controls the first cylinder, the servo motor, and the second cylinder through the control panel.

[0035] (4) In this solution, the guard plate is for protecting the spring, and the installation of the baffle is for protecting the parts on the bearing plate. Description of the drawings

[0036] Figure 1 is the overall explosion diagram of the present invention;

[0037] Figure 2 is the front - view three - dimensional diagram of the present invention;

[0038] Figure 3 is the bottom - view three - dimensional diagram of the present invention;

[0039] Figure 4 is the overall cross - sectional view of the present invention;

[0040] Figure 5 is the combined diagram of the rotary mechanism and the limiting mechanism of the present invention;

[0041] Figure 6 is the cross - sectional view of the rotary mechanism and the limiting mechanism of the present invention;

[0042] Figure 7Exploded view of the slewing mechanism and the limiting mechanism of the present invention;

[0043] Figure 8 Schematic structural view of the arc-shaped guide plate of the present invention;

[0044] Figure 9 Schematic structural view of the water spraying and cooling device of the present invention.

[0045] Description of the reference numerals in the figure:

[0046] 1. Base plate; 2. Fixed rod; 3. Top plate; 4. Slide hole; 5. Main body of the workbench; 6. Bearing plate; 7. First fixing plate; 8. First cylinder; 9. Second fixing plate; 10. Control panel; 11. First rotating rod; 12. First bevel gear; 13. Support plate; 14. Second rotating rod; 15. Second bevel gear; 16. Servo motor; 17. Turntable; 18. Limit groove; 19. Positioning plate; 20. Guide rod; 21. Spring; 22. Arc-shaped clamping plate; 23. Limit friction plate; 24. Limit hole; 25. Connecting rope; 26. Guide wheel; 27. Winding wheel; 28. Third rotating rod; 29. Pulley; 30. Transmission belt; 31. Fixed seat; 32. Second cylinder; 33. Positioning block; 34. Protective plate; 35. Baffle; 36. Arc-shaped groove; 37. Arc-shaped guide plate; 38. Water outlet cavity; 39. Liquid collecting pipe; 40. Mixing gas pipe; 41. Slag removal pipe; 42. Upper arc-shaped plate; 43. Lower arc-shaped plate; 44. Water outlet slit; 45. Elastic resin middle plate; 46. Piezoelectric ceramic array; 47. Elastic resin thin plate; 48. Guide head plate; 49. Reducing diameter part; 50. Hollow annular air inlet pipe; 51. Round pipe part; 52. Round cover; 53. Electromagnet; 54. Semiconductor refrigeration sheet array. Detailed implementation manners

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0048] Embodiment:

[0049] Please refer to Figures 1-7 , a rotary workbench for a numerical control machine tool and its rotary control method, comprising:

[0050] Base plate 1;

[0051] Fixed rods 2, four fixed rods 2 are provided, the four fixed rods 2 are all fixedly connected to the base plate 1, the upper ends of the four fixed rods 2 are fixedly connected with a top plate 3, and a slide hole 4 is opened at the upper end of the top plate 3;

[0052] The workbench main body 5 is arranged on the top plate 3;

[0053] The bearing plate 6 is arranged on the bottom plate 1;

[0054] The first rotating rod 11 is rotatably connected to the upper end of the bearing plate 6, and the upper end of the first rotating rod 11 is fixedly connected to the workbench main body 5. The first rotating rod 11 is slidably connected in the sliding hole 4;

[0055] The turntable 17 is fixedly connected to the surface of the first rotating rod 11, and a limiting groove 18 is formed on the surface of the turntable 17.

[0056] In this embodiment, the fixing rod 2 is for facilitating the fixation of the top plate 3, the top plate 3 is for facilitating the support of the workbench main body 5, the opening of the sliding hole 4 is for facilitating the sliding of the first rotating rod 11, the bearing plate 6 is for facilitating the rotational connection of the first rotating rod 11, the first rotating rod 11 is for facilitating the driving of the workbench main body 5 to rotate, the turntable 17 is for facilitating the opening of the limiting groove 18, and the limiting groove 18 is for facilitating the clamping connection with the limiting friction plate 23. The rotation of the turntable 17 is limited by the clamping connection between the limiting friction plate 23 and the limiting groove 18, and then the rotation of the first rotating rod 11 is restricted. In the present invention, the rotation of the workbench main body 5 is driven by the rotation of the first rotating rod 11 so as to facilitate the rotation of the workbench main body 5. The rotation of the turntable 17 is limited by the clamping connection between the limiting friction plate 23 and the limiting groove 18, and then the rotation of the first rotating rod 11 is restricted, preventing the problem that the workbench main body 5 will continue to rotate due to inertia when it stops rotating, and solving the existing safety hazard.

[0057] Specifically, the slewing mechanism includes a first bevel gear 12, a support plate 13, a second rotating rod 14, a second bevel gear 15 and a servo motor 16. The first bevel gear 12 is fixedly connected to the surface of the first rotating rod 11. The support plates 13 are provided in two numbers, and both of the two support plates 13 are fixedly connected to the upper end of the bearing plate 6. The second rotating rod 14 is rotatably connected between the two support plates 13. The second bevel gear 15 penetrates through the support plate 13 movably, and the second bevel gear 15 is fixedly connected to the second rotating rod 14. The second bevel gear 15 meshes with the first bevel gear 12. The servo motor 16 is installed at the right end of the support plate 13. The output end of the servo motor 16 penetrates through the support plate 13 movably, and the output end of the servo motor 16 is fixedly connected to the second rotating rod 14.

[0058] In this embodiment, the support plate 13 is for facilitating the installation of the servo motor 16, and also for facilitating the rotational connection of the second rotating rod 14. When the output end of the servo motor 16 rotates, the rotation of the output end of the servo motor 16 drives the second rotating rod 14 to rotate. The rotation of the second rotating rod 14 drives the second bevel gear 15 to rotate. Since the second bevel gear 15 rotates with the first bevel gear 12, the rotation of the second bevel gear 15 drives the first bevel gear 12 to rotate. And through the rotation of the first bevel gear 12, the first rotating rod 11 is driven to rotate, and through the rotation of the first rotating rod 11, the workbench main body 5 is driven to rotate, thereby adjusting the angle of the workbench main body 5 and enabling the workbench main body 5 to rotate back.

[0059] Specifically, the limiting mechanism includes an arc-shaped groove 36, a linkage assembly, a control assembly, and two sets of limiting assemblies. The arc-shaped groove 36 is opened at the upper end of the bearing plate 6. The linkage assembly, the control assembly, and the two sets of limiting assemblies are all arranged on the bearing plate 6. The linkage assembly is connected to the control assembly and the second rotating rod 14. The control assembly is connected to both sets of limiting assemblies. Both sets of limiting assemblies are connected to the limiting groove 18.

[0060] In this embodiment, the opening of the arc-shaped groove 36 is for facilitating the sliding fit with the winding wheel 27. The linkage assembly, the control assembly, and the two sets of limiting assemblies are all arranged on the bearing plate 6. The linkage assembly is connected to the control assembly and the second rotating rod 14. The control assembly is connected to both sets of limiting assemblies. Both sets of limiting assemblies are connected to the limiting groove 18.

[0061] Specifically, each set of limiting assemblies includes a positioning plate 19, a guide rod 20, a spring 21, an arc-shaped clamping plate 22, a limiting friction plate 23, and a limiting hole 24. The positioning plate 19 is fixedly connected to the upper end of the bearing plate 6. The guide rod 20, the spring 21, and the limiting hole 24 are all provided in two. The two guide rods 20 are both fixedly connected to the positioning plate 19. The two springs 21 are both fixedly connected to the positioning plate 19. The arc-shaped clamping plate 22 is fixedly connected to the two springs 21. The limiting friction plate 23 is fixedly connected inside the arc-shaped clamping plate 22, and the limiting friction plate 23 is clamped with the limiting groove 18. The two limiting holes 24 are both opened on the arc-shaped clamping plate 22, and the two limiting holes 24 are respectively in sliding fit with the two guide rods 20.

[0062] In this embodiment, the positioning plate 19 is for facilitating the fixing of the guide rod 20 and the spring 21. The guide rod 20 is for facilitating the sliding fit with the limit hole 24. The arc-shaped clamping plate 22 is limited by the sliding fit between the guide rod 20 and the limit hole 24 to facilitate the stable movement of the arc-shaped clamping plate 22. The spring 21 positions the arc-shaped clamping plate 22 through its own elastic action, so that the limit friction plate 23 on the arc-shaped clamping plate 22 is clamped in the limit groove 18, and the first rotating rod 11 is restricted by the clamping between the limit groove 18 and the limit friction plate 23, preventing the problem that the main body 5 of the workbench continues to rotate due to inertia when it stops rotating, and solving the existing safety hazard.

[0063] Specifically, the linkage assembly includes a third rotating rod 28, a pulley 29, and a transmission belt 30. The third rotating rod 28 is rotatably connected to the left end of the support plate 13. Two pulleys 29 are provided, and the two pulleys 29 are respectively fixedly connected to the surfaces of the third rotating rod 28 and the second rotating rod 14. The transmission belt 30 is sleeved on the surfaces of the two pulleys 29, and the two pulleys 29 are in transmission cooperation through the transmission belt 30.

[0064] In this embodiment, the rotation of the second rotating rod 14 drives the rotation of the third rotating rod 28 through the transmission cooperation of the pulley 29 and the transmission belt 30. The rotation of the third rotating rod 28 drives the rotation of the fixed seat 31, and further drives the rotation of the wire winding wheel 27 through the rotation of the fixed seat 31.

[0065] Specifically, the control assembly includes a connecting rope 25, a guide wheel 26, a wire winding wheel 27, a fixed seat 31, a second cylinder 32, and a positioning block 33. The connecting rope 25, the second cylinder 32, and the positioning block 33 are all provided in two. The fixed seat 31 is fixedly connected to the left end of the third rotating rod 28. The two second cylinders 32 are respectively fixedly connected to the front and rear ends of the fixed seat 31. The two positioning blocks 33 are respectively fixedly connected to the extended ends of the two second cylinders 32. The wire winding wheel 27 is slidably connected in the arc surface groove 36, and the wire winding wheel 27 is clamped with the two positioning blocks 33. The connecting rope 25 is provided in two. One ends of the two connecting ropes 25 are respectively fixedly connected to the surface of the wire winding wheel 27. The other ends of the two connecting ropes 25 are respectively fixedly connected to the two arc-shaped clamping plates 22, and the two connecting ropes 25 respectively pass through the two positioning plates 19 movably. The guide wheel 26 is provided in two groups. The two groups of guide wheels 26 are both rotatably connected to the bearing plate 6, and the two groups of guide wheels 26 are in sliding cooperation with the two connecting ropes 25. Each group of guide wheels 26 is provided in two.

[0066] In this embodiment, the connecting rope 25 is used to facilitate the movement of the arc-shaped card plate 22, the guide wheel 26 is used to facilitate the guidance of the connecting rope 25, so as to reduce the friction when the connecting rope 25 moves, the winding wheel 27 is used to facilitate the winding of the connecting rope 25 on the surface of the winding wheel 27, and the arc-shaped card plate 22 is pulled to move by winding the connecting rope 25 by the winding wheel 27, the fixing seat 31 is used to facilitate the installation of the second cylinder 32, and the second cylinder 32 is used to facilitate the movement of the positioning block 33, and the movement of the two positioning blocks 33 makes the two The three positioning blocks 33 are clamped together with the inner wall of the winding wheel 27, so that when the third rotating rod 28 rotates, the winding wheel 27 will be driven to rotate. When the connecting rope 25 is wound around the surface of the winding wheel 27, the second cylinder 32 will be contracted. The contraction of the extended end of the second cylinder 32 drives the positioning block 33 to move. When the two positioning blocks 33 are no longer clamped with the winding wheel 27, the connecting rope 25 on the surface of the winding wheel 27 will be reset by the elastic action of the spring 21. After the spring 21 is reset by the elastic action, the connecting rope 25 will also be detached from the surface of the winding wheel 27.

[0067] Specifically, two first fixing plates 7 are fixedly connected to the upper end of the base plate 1, and first cylinders 8 are installed on the left ends of the two first fixing plates 7. Second fixing plates 9 are fixedly connected to the front and rear ends of the supporting plate 6, and the extended ends of the two first cylinders 8 are fixedly connected to the two second fixing plates 9 respectively.

[0068] In this embodiment, the first fixed plate 7 is installed to facilitate the fixation of the first cylinder 8. The extension and retraction of the extended end of the first cylinder 8 facilitates the movement of the second fixed plate 9. The movement of the second fixed plate 9 drives the support plate 6 to move, and the movement of the support plate 6 drives the workbench body 5 to move, thereby adjusting the left and right positions of the workbench body 5.

[0069] Specifically, a control panel 10 is installed at the front end of the base plate 1 , and the control panel 10 is electrically connected to the two first cylinders 8 , the servo motor 16 and the two second cylinders 32 .

[0070] In this embodiment, the control panel 10 is for facilitating electrical connection with the first cylinder 8, the servo motor 16 and the second cylinder 32. The first cylinder 8, the servo motor 16 and the second cylinder 32 are controlled by the control panel 10. It should be noted that the first cylinder 8, the control panel 10, the servo motor 16 and the second cylinder 32 are all prior arts in the field, so they will not be described in detail herein.

[0071] Specifically, the upper ends of the two positioning plates 19 are fixedly connected with guard plates 34 , the two guard plates 34 are slidably matched with the two arc-shaped clamping plates 22 , the upper end of the bearing plate 6 is installed with a baffle 35 , and the servo motor 16 movably penetrates the baffle 35 .

[0072] In this embodiment, the guard plate 34 is for facilitating the protection of the spring 21, and the installation of the baffle plate 35 is for facilitating the protection of the parts on the bearing plate 6.

[0073] A rotary control method for a rotary table of a numerically controlled machine tool includes the following steps:

[0074] S1. When it is necessary to adjust the rotation angle of the workbench main body 5, start the output end of the servo motor 16 to rotate. The rotation of the output end of the servo motor 16 drives the second rotating rod 14 to rotate. The rotation of the second rotating rod 14 drives the second bevel gear 15 to rotate. Since the second bevel gear 15 rotates with the first bevel gear 12, the rotation of the second bevel gear 15 drives the first bevel gear 12 to rotate, and drives the first rotating rod 11 to rotate through the rotation of the first bevel gear 12. Drive the workbench main body 5 to rotate through the rotation of the first rotating rod 11, so as to adjust the angle of the workbench main body 5 and make the workbench main body 5 rotate. When the rotation angle of the workbench main body 5 is adjusted, the servo motor 16 can be turned off;

[0075] S2. When the second rotating rod 14 rotates, the second rotating rod 14 drives the third rotating rod 28 to rotate through the transmission cooperation of the pulley 29 and the transmission belt 30. The rotation of the third rotating rod 28 drives the fixed seat 31 to rotate. The rotation of the fixed seat 31 drives the positioning block 33 to rotate. Since the winding wheel 27 is clamped and fixed by the two positioning blocks 33, the rotation of the third rotating rod 28 drives the winding wheel 27 to rotate through the positioning block 33. The rotation of the winding wheel 27 causes the two connecting ropes 25 to wind around the surface of the winding wheel 27. When the connecting rope 25 winds around the surface of the winding wheel 27, it will pull the arc-shaped clamping plate 22 to move. The movement of the arc-shaped clamping plate 22 compresses the spring 21. The movement of the arc-shaped clamping plate 22 also makes the arc-shaped clamping plate 22 slide on the surface of the guide rod 20, and the movement of the arc-shaped clamping plate 22 makes the limit friction plate 23 disengage from the limit groove 18. When the limit friction plate 23 is not clamped with the limit groove 18, it is convenient for the first rotating rod 11 to rotate. After the rotation angle of the workbench main body 5 is adjusted, the servo motor 16 is turned off. After the servo motor 16 is turned off, the third rotating rod 28 also stops rotating. At this time, start the contraction of the extension ends of the two second cylinders 32 through the control panel 10. The contraction of the extension ends of the second cylinders 32 drives the positioning blocks 33 to move. When the two positioning blocks 33 are no longer clamped with the winding wheel 27, the connecting rope 25 on the surface of the winding wheel 27 will be reset by the elastic action of the spring 21. After the spring 21 is reset by its own elastic action, the spring 21 will push the arc-shaped clamping plate 22 and the limit friction plate 23 to move. The movement of the limit friction plate 23 makes the limit friction plate 23 clamped in the limit groove 18. The rotation of the turntable 17 is limited by the clamping of the limit friction plate 23 and the limit groove 18, thereby restricting the rotation of the first rotating rod 11 and preventing the problem that the workbench main body 5 will continue to rotate due to inertia when it stops rotating, solving the existing safety hazard;

[0076] S3. When it is necessary to adjust the left - right position of the workbench main body 5, two first cylinders 8 are simultaneously started through the control panel 10. The telescopic movement of the extending ends of the two first cylinders 8 pushes the second fixing plate 9 and the bearing plate 6 to move. The movement of the bearing plate 6 drives the workbench main body 5 to move. At this time, the first rotating rod 11 slides in the sliding hole 4. By controlling the telescopic movement of the extending ends of the first cylinders 8, the left - right position of the workbench main body 5 can be adjusted, optimizing the convenience of use.

[0077] Please refer to Figure 8 and 9 In this embodiment, a water spraying cooling device is provided above the workbench main body 5. The water spraying cooling device is used to cool the cutting tool during the machining process. During the CNC machining process, due to the high machining speed and continuous machining process, a lot of heat will be generated and accumulated. During the CNC machining process, the cooling water is generally recycled, but the cooling water will absorb heat and increase in temperature after cooling the cutting tool and the workpiece; it is necessary to cool it down. If an additional evaporation heat exchanger is added, firstly, the procurement and maintenance costs are high, secondly, the floor area is large, and thirdly, it is not suitable for such a small - scale application. Therefore, this embodiment specifically designs a water spraying cooling device dedicated to CNC machine tools. The water spraying cooling device includes a convex arc - shaped guide plate 37, a water outlet cavity 38, a liquid collecting pipe 39, a gas mixing pipe 40, and a detachable slag removal pipe 41 that are connected or joined in sequence. The water outlet cavity 38 includes an upper convex upper arc - shaped plate 42, an upper convex lower arc - shaped plate 43, and two side plates. The upper arc - shaped plate 42, the lower arc - shaped plate 43, and the two side plates enclose a water outlet cavity 38 with a gradually decreasing cross - sectional area towards the arc - shaped guide plate 37. A water outlet slit 44 is formed at the front end of the water outlet cavity 38. The arc - shaped guide plate 37 is smoothly connected to the lower arc - shaped plate 43 to utilize the Coanda effect to guide the water pressurized and flowing out from the water outlet slit 44. The arc - shaped guide plate 37 includes an upper convex arc - shaped elastic resin middle plate 45, piezoelectric ceramic arrays 46 attached to the upper and lower surfaces of the elastic resin middle plate 45, elastic resin thin plates 47 attached to the outside of the two piezoelectric ceramic arrays 46, and a guiding head plate 48 smoothly connected to one end of the elastic resin middle plate 45 and the elastic resin thin plate 47. An external circuit controls one of the piezoelectric ceramic arrays 46 on both sides to extend and the other to contract to adjust the bending curvature of the elastic resin middle plate 45 and the elastic resin thin plate 47. Both the upper arc - shaped plate 42 and the lower arc - shaped plate 43 are made of heat - conducting materials, and semiconductor refrigeration sheet arrays 54 are respectively attached to the outer surfaces of the upper arc - shaped plate 42 and the lower arc - shaped plate 43. The cold ends of the semiconductor refrigeration sheet arrays 54 are attached to the upper arc - shaped plate 42 or the lower arc - shaped plate 43, and the hot ends face outwards.

[0078] In this embodiment, the liquid collecting pipe 39 is in transitional connection with the flat and long water outlet cavity 38; a necking part 49 is arranged in the middle of the air mixing pipe 40; a hollow annular air inlet pipe 50 is communicated with the air mixing pipe 40 through the necking part 49; pressurized cold air is introduced into the air mixing pipe 40 through the hollow annular air inlet pipe 50; the bottom of the slag removal pipe 41 extends downward by a round pipe part 51; a round cover 52 is detachably and sealingly screwed with the round pipe part 51; an electromagnet 53 is fixedly arranged on the inner surface of the round cover 52; an external circuit controls the electromagnet 53 to be powered on and off.

[0079] In this embodiment, first, the circulating cooling water with a higher temperature after cooling the cutting tool is pumped into the pipeline after preliminary filtration. When the cooling water passes through the slag removal pipe, the fine iron particles contained in it are adsorbed by the electromagnet and settle in the round pipe part; thus, it is ensured to remove the iron slag in the cooling water and prevent the iron slag from embedding into the machining surface to damage the cutting tool or cause notches. Secondly, when the cooling water passes through the air mixing pipe, it is mixed with the compressed cold air from the hollow annular air inlet pipe. Since the cooling water is squeezed and expanded at the reduced-diameter part, it is evenly mixed with the compressed cold air; and according to Bernoulli's principle, the cooling water accelerates and reduces pressure at the reduced-diameter part, forming a negative pressure at the reduced-diameter part, which is conducive to sucking in the compressed cold air, thereby realizing the uniform mixing of the cooling water and the pressurized cold air and achieving the first cooling of the cooling water mixed with the compressed cold air. Thirdly, the cooling water then enters and fills the liquid collecting pipe, and then enters the water outlet cavity with a cross-sectional area gradually decreasing from large to small; due to the cooling effect of the semiconductor refrigeration chip array and the large contact area between the upper and lower arc-shaped plates and the cooling water, the cooling water undergoes the second cooling; after being pressurized, it is extruded through the water outlet slit; the extruded cooling water adheres to the surface of the arc-shaped guide plate under the Coanda effect and sprays onto the cutting tool during the machining process to cool it; when the cooling water is extruded from the water outlet slit, due to the adiabatic expansion and dissipation of the mixed gas in it, the temperature decreases, thereby causing the third cooling of the cooling water; when the cooling water adheres to the arc-shaped guide plate, due to the large contact area with the air, it undergoes the fourth cooling through heat exchange with the air; therefore, this application uses a clever design to achieve multiple coolings of the cooling water during the pumping and spraying processes of the cooling water, thereby significantly improving the cooling efficiency of the cooling water while avoiding the disadvantages of using an evaporation heat exchanger, significantly saving energy, and reducing energy consumption.

[0080] As the cutting tool moves, the visual recognition device tracks the coordinate position of the cutting tool. After calculation and analysis by the controller, the upper and lower layers of piezoelectric ceramic arrays are controlled by an external circuit to elongate and shorten respectively, thereby adjusting the bending arcs of the elastic resin middle plate and the elastic resin thin plate, so that the cooling water always sprays towards the cutting tool. Since the sprayed cooling water is a strip-shaped water curtain, there is no need to adjust the angle in the width direction of the water curtain. Therefore, simple, direct, and effective adjustment can be achieved, realizing the synchronous movement of the water spraying and the cutting tool, and ensuring the cooling effect of the cutting tool and the workpiece.

[0081] As described above, it is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its improved concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A rotary table for a numerically controlled machine tool, characterized in that, Including: Bottom plate (1); Fixing rods (2), four fixing rods (2) are provided, and the four fixing rods (2) are all fixedly connected to the bottom plate (1). The upper ends of the four fixing rods (2) are fixedly connected with a top plate (3), and a sliding hole (4) is opened at the upper end of the top plate (3); Workbench main body (5), the workbench main body (5) is arranged on the top plate (3); Carrying plate (6), the carrying plate (6) is arranged on the bottom plate (1); First rotating rod (11), the first rotating rod (11) is rotatably connected to the upper end of the carrying plate (6), and the upper end of the first rotating rod (11) is fixedly connected to the workbench main body (5). The first rotating rod (11) is slidably connected in the sliding hole (4); Turntable (17), the turntable (17) is fixedly connected to the surface of the first rotating rod (11), and a limiting groove (18) is opened on the surface of the turntable (17); Rotating mechanism, the rotating mechanism is arranged on the carrying plate (6), and the rotating mechanism is connected to the first rotating rod (11); Limiting mechanism, the limiting mechanism is arranged on the carrying plate (6), and the limiting mechanism is connected to both the limiting groove (18) and the rotating mechanism; The rotating mechanism includes a first bevel gear (12), a support plate (13), a second rotating rod (14), a second bevel gear (15) and a servo motor (16). The first bevel gear (12) is fixedly connected to the surface of the first rotating rod (11). Two support plates (13) are provided, and the two support plates (13) are both fixedly connected to the upper end of the carrying plate (6). The second rotating rod (14) is rotatably connected between the two support plates (13). The second bevel gear (15) movably penetrates through the support plate (13), and the second bevel gear (15) is fixedly connected to the second rotating rod (14). The second bevel gear (15) meshes with the first bevel gear (12). The servo motor (16) is installed at the right end of the support plate (13), and the output end of the servo motor (16) movably penetrates through the support plate (13), and the output end of the servo motor (16) is fixedly connected to the second rotating rod (14); The limiting mechanism includes an arc surface groove (36), a linkage assembly, a control assembly and two groups of limiting assemblies. The arc surface groove (36) is opened at the upper end of the carrying plate (6). The linkage assembly, the control assembly and the two groups of limiting assemblies are all arranged on the carrying plate (6). The linkage assembly is connected to the control assembly and the second rotating rod (14). The control assembly is connected to both groups of limiting assemblies. Both groups of limiting assemblies are connected to the limiting groove (18); Each of the limiting components includes a positioning plate (19), a guide rod (20), a spring (21), an arc-shaped clamping plate (22), a limiting friction plate (23) and a limiting hole (24). The positioning plate (19) is fixedly connected to the upper end of the bearing plate (6). The guide rod (20), the spring (21) and the limiting hole (24) are all provided in two. The two guide rods (20) are both fixedly connected to the positioning plate (19). The two springs (21) are both fixedly connected to the positioning plate (19). The arc-shaped clamping plate (22) is fixedly connected to the two springs (21). The limiting friction plate (23) is fixedly connected inside the arc-shaped clamping plate (22), and the limiting friction plate (23) is clamped with the limiting groove (18). The two limiting holes (24) are both opened on the arc-shaped clamping plate (22), and the two limiting holes (24) are respectively in sliding fit with the two guide rods (20).

2. The rotary table of a numerical control machine tool according to claim 1, characterized in that: The linkage component includes a third rotating rod (28), a pulley (29) and a transmission belt (30). The third rotating rod (28) is rotatably connected to the left end of the support plate (13). The pulley (29) is provided in two. The two pulleys (29) are respectively fixedly connected to the surfaces of the third rotating rod (28) and the second rotating rod (14). The transmission belt (30) is sleeved on the surfaces of the two pulleys (29), and the two pulleys (29) are in transmission cooperation through the transmission belt (30).

3. A rotary table for a numerical control machine tool according to claim 2, characterized in that: The control component includes a connecting rope (25), a guide pulley (26), a winding wheel (27), a fixed seat (31), a second cylinder (32) and a positioning block (33). The connecting rope (25), the second cylinder (32) and the positioning block (33) are all provided in two. The fixed seat (31) is fixedly connected to the left end of the third rotating rod (28). The two second cylinders (32) are respectively fixedly connected to the front and rear ends of the fixed seat (31). The two positioning blocks (33) are respectively fixedly connected to the extending ends of the two second cylinders (32). The winding wheel (27) is slidably connected inside the arc-shaped groove (36), and the winding wheel (27) is clamped with the two positioning blocks (33). The connecting rope (25) is provided in two. One end of each of the two connecting ropes (25) is fixedly connected to the surface of the winding wheel (27). The other ends of the two connecting ropes (25) are respectively fixedly connected to the two arc-shaped clamping plates (22), and the two connecting ropes (25) respectively pass through the two positioning plates (19) movably. The guide pulley (26) is provided in two groups. The two groups of guide pulleys (26) are both rotatably connected to the bearing plate (6), and the two groups of guide pulleys (26) are in sliding fit with the two connecting ropes (25). Each group of guide pulleys (26) is provided in two.

4. A rotary table of a numerically controlled machine tool according to claim 3, characterized in that: Two first fixing plates (7) are fixedly connected to the upper end of the bottom plate (1). The first cylinders (8) are respectively installed at the left ends of the two first fixing plates (7). The front and rear ends of the bearing plate (6) are both fixedly connected with second fixing plates (9). The extending ends of the two first cylinders (8) are respectively fixedly connected to the two second fixing plates (9).

5. A rotary table of a numerically controlled machine tool according to claim 4, characterized in that: A control panel (10) is installed at the front end of the bottom plate (1), and the control panel (10) is electrically connected to two first cylinders (8), a servo motor (16), and two second cylinders (32).

6. A rotary table for a numerically controlled machine tool according to claim 5, characterized in that: Upper ends of two said positioning plates (19) are fixedly connected with guard plates (34), the two guard plates (34) are slidably matched with two arc-shaped clamping plates (22), and a baffle plate (35) is installed at the upper end of the bearing plate (6), and the servo motor (16) movably penetrates through the baffle plate (35).

7. A rotation control method for a rotary table of a numerically controlled machine tool, characterized in that, Using a rotary table of a numerical control machine tool according to claim 6, the following steps are included: S1. When it is necessary to adjust the rotation angle of the workbench main body (5), start the output end of the servo motor (16) to rotate. The rotation of the output end of the servo motor (16) drives the second rotating rod (14) to rotate. The rotation of the second rotating rod (14) drives the second bevel gear (15) to rotate. Since the second bevel gear (15) rotates with the first bevel gear (12), the rotation of the second bevel gear (15) drives the first bevel gear (12) to rotate, and drives the first rotating rod (11) to rotate through the rotation of the first bevel gear (12). The rotation of the first rotating rod (11) drives the workbench main body (5) to rotate, so as to adjust the angle of the workbench main body (5) and make the workbench main body (5) rotate. After adjusting the rotation angle of the workbench main body (5), the servo motor (16) can be turned off; S2. When the second rotating rod (14) rotates, the second rotating rod (14) drives the third rotating rod (28) to rotate through the transmission cooperation of the pulley (29) and the transmission belt (30). The rotation of the third rotating rod (28) drives the fixed seat (31) to rotate, and the rotation of the fixed seat (31) drives the positioning block (33) to rotate. Since the winding wheel (27) is clamped and fixed by two positioning blocks (33), the rotation of the third rotating rod (28) drives the winding wheel (27) to rotate through the positioning block (33). The rotation of the winding wheel (27) causes the two connecting ropes (25) to wind around the surface of the winding wheel (27). When the connecting ropes (25) wind around the surface of the winding wheel (27), they will pull the arc-shaped clamping plate (22) to move. The movement of the arc-shaped clamping plate (22) compresses the spring (21). The movement of the arc-shaped clamping plate (22) also causes the arc-shaped clamping plate (22) to slide on the surface of the guide rod (20), and the movement of the arc-shaped clamping plate (22) causes the limit friction plate (23) to disengage from the limit groove (18). When the limit friction plate (23) is not engaged with the limit groove (18), it is convenient for the first rotating rod (11) to rotate. After the workbench main body (5) rotates by a certain angle, the servo motor (16) is turned off. After the servo motor (16) is turned off, the third rotating rod (28) also stops rotating. At this time, the extension ends of the two second cylinders (32) are retracted by starting the two second cylinders (32) through the control panel (10). The retraction of the extension ends of the two second cylinders (32) drives the positioning block (33) to move. When the two positioning blocks (33) are no longer engaged with the winding wheel (27), the connecting ropes (25) on the surface of the winding wheel (27) will reset through the elastic action of the spring (21). After the spring (21) resets through its own elastic action, the spring (21) will push the arc-shaped clamping plate (22) and the limit friction plate (23) to move. The movement of the limit friction plate (23) causes the limit friction plate (23) to be engaged in the limit groove (18). The engagement of the limit friction plate (23) and the limit groove (18) limits the turntable (17), thereby restricting the rotation of the first rotating rod (11) and preventing the problem that the workbench main body (5) continues to rotate due to inertia when it stops rotating, solving the existing safety hazard; S3. When it is necessary to adjust the left and right positions of the workbench main body (5), the two first cylinders (8) are started simultaneously through the control panel (10). The extension and retraction of the extension ends of the two first cylinders (8) push the second fixing plate (9) and the bearing plate (6) to move. The movement of the bearing plate (6) drives the workbench main body (5) to move. At this time, the first rotating rod (11) slides in the sliding hole (4). By controlling the extension and retraction of the extension end of the first cylinder (8), the left and right positions of the workbench main body (5) can be adjusted, optimizing the convenience of use.

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