A device for high-precision machining of butterfly valve body and valve plate sealing surface

Abstract

The present invention discloses a device for high-precision machining of butterfly valve bodies and valve plate sealing surfaces, comprising a base, a workbench, and a mounting frame fixedly connected to the front and back sides of the base, wherein the workbench is rotatably connected to the base via a thrust ball bearing. In the present invention, the main shaft and the workbench are fixed, the vertical shaft frame and the upper center are also fixed, and there is no gap between them. The bevel plate tooling is fixed on the top spindle, and the workpiece to be machined is fixed on the bevel plate tooling, and there is obviously no gap. The rubber pad bears the weight of the workpiece to be machined and plays the role of centering and centering the top spindle, so that the entire tooling parts float tightly on the workbench. The rotation of the workbench drives the bevel plate tooling and the workpiece to be machined to rotate, so as to complete the machining of the workpiece. This can effectively reduce the deviation during the machining process of the workpiece, make the sealing effect more ideal during the pressure test after the workpiece is assembled, and reduce the problem of leakage.

Description

Technical Field

[0001] The present invention relates to the technical field of butterfly valve processing devices, and in particular to a device for processing a butterfly valve body and a valve plate sealing surface with high precision. Background Art

[0002] A butterfly valve, also known as a flap valve, is a regulating valve with a simple structure. It can be used for on-off control of low-pressure pipeline media. A butterfly valve is a valve whose closing member is a disc that rotates around the valve axis to achieve opening and closing.

[0003] At present, the valve body and valve plate are processed by ordinary vertical lathes, ordinary horizontal lathes, CNC vertical lathes, and CNC horizontal lathes for processing the sealing surface. Its advantage is that it can perform ordinary cutting processing with high efficiency. However, due to the inherent gap inside the transmission bearing under the workbench, it causes dimensional deviation during the workpiece processing process, resulting in unsatisfactory sealing effect during the pressure test after assembly. Leakage has always existed and cannot meet customer requirements. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a device for high-precision machining of a butterfly valve body and a valve plate sealing surface.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a device for high-precision processing of butterfly valve body and valve plate sealing surface, comprising a base, a workbench and a mounting frame fixedly connected to the front and back of the base, the workbench is rotatably connected to the base through a thrust ball bearing, and the inner wall of the base is connected to a first driving mechanism for driving the workbench to rotate; a main shaft is fixedly connected to the middle of the base, and the main shaft is rotatably connected to the workbench through a roller bearing, a bevel plate tooling is provided above the workbench, a rubber plate is provided at the bottom of the bevel plate tooling, the bevel plate tooling and the rubber plate are both fixedly connected to the workbench, a positioning sleeve is provided in the middle of the bevel plate tooling, which is fixed to the top shaft by screw 2; body track 1 and track 2 are provided on both sides of the mounting frame, and a crossbeam is slidably connected to the front side The side wall of the mounting frame is connected to a first adjusting mechanism for adjusting the upward and downward movement of the crossbeam, the outer wall of the crossbeam is slidably connected to a transverse slide, and the outer wall of the tool holder slide is connected to a second adjusting mechanism for driving the transverse slide to move left and right. A tool holder slide and a third adjusting mechanism for adjusting the upward and downward position of the tool holder slide are provided on the front side of the transverse slide. The bottom of the tool holder slide rail is fixedly connected to the tool holder, the outer wall of the tool holder is fixedly connected to the grinding wheel machine, the grinding wheel machine is provided with a grinding wheel, and the tool holder is connected to a second driving mechanism for driving the grinding wheel to rotate; a vertical shaft frame is slidably installed on the middle front side of the mounting frame, and the front side of the mounting frame is connected to a fourth adjusting mechanism for adjusting the upward and downward position of the vertical shaft frame, and one end of the vertical shaft frame is fixedly connected to a top mechanism for limiting the top of the top spindle.

[0006] As a further description of the above technical solution:

[0007] The first driving mechanism includes a motor 1, an output shaft of the motor 1 is fixedly sleeved with a first gear, and the bottom of the base is fixedly connected with a second gear meshing with the first gear.

[0008] As a further description of the above technical solution:

[0009] The first adjustment mechanism includes a second motor fixedly connected to the mounting frame, the output end of the second motor is fixedly connected to a first screw, the outer surface of the first screw is threadedly sleeved with a second screw nut, and the second screw nut is fixedly connected to the side of the beam.

[0010] As a further description of the above technical solution:

[0011] The second adjustment mechanism includes a motor three fixedly connected to the crossbeam, the output end of the motor three is fixedly connected to a screw rod two, the outer surface of the screw rod two is threadedly sleeved with a screw nut one, and the transverse slide is fixedly connected to the screw nut one.

[0012] As a further description of the above technical solution:

[0013] The third adjustment mechanism includes a tool holder slide fixedly connected to the transverse slide, the tool holder slide rail is slidably connected to the tool holder slide, the top of the tool holder slide rail is fixedly connected to a motor four, the output end of the motor four is fixedly connected to a screw rod three, the outer surface of the screw rod three is threadedly sleeved with a screw nut three, and the screw nut three is fixedly installed on the side wall of the transverse slide.

[0014] As a further description of the above technical solution:

[0015] The second driving mechanism includes a motor six fixedly connected to the tool holder, and the output shaft of the motor six is ​​connected to the grinding wheel through a synchronous belt.

[0016] As a further description of the above technical solution:

[0017] The fourth adjustment mechanism includes a track three fixedly connected to the mounting frame, the mounting frame is slidably mounted on the track three, the top of the track three is fixedly connected to a motor five, the output end of the motor five is fixedly connected to a screw rod four, the outer surface of the screw rod four is threadedly sleeved with a screw nut four, and the screw nut four is fixedly mounted on the bottom plate of the vertical shaft frame.

[0018] As a further description of the above technical solution:

[0019] The top mechanism includes a top center seat fixedly connected to the side wall of the vertical shaft frame, the side wall of the top center seat passes through and is threadedly connected to an upper top center, the side wall of the top center seat passes through and is threadedly connected to a screw 1 for tightening the upper top center, and the top of the upper top center is fixedly connected to a hand wheel.

[0020] The present invention has the following beneficial effects:

[0021] 1. Compared with the existing technology, the device for high-precision processing of butterfly valve body and valve plate sealing surface, through the mutual cooperation between the installation base, workbench, main shaft, bevel plate tooling, rubber plate and top spindle, the main shaft and workbench are fixed, the vertical shaft frame and the top center are also fixed, there is no gap between them, the bevel plate tooling is fixed on the top spindle, and the workpiece to be processed is fixed on the bevel plate tooling, obviously there is no gap, and the rubber pad bears the weight of the workpiece to be processed, and at the same time plays the role of centering and centering the top spindle, so that the entire tooling parts float tightly on the workbench, and the rotation of the workbench drives the bevel plate tooling and the workpiece to be processed to rotate, so as to complete the processing of the workpiece, which can effectively reduce the deviation during the processing of the workpiece, make the sealing effect more ideal during the pressure test after the workpiece is assembled, and reduce the problem of leakage.

[0022] 2. Compared with the existing technology, the device for high-precision processing of butterfly valve body and valve plate sealing surface, through the mutual cooperation among the mounting frame, crossbeam, transverse ram, tool holder ram, tool holder body, grinding wheel machine and vertical shaft frame, the crossbeam and vertical shaft frame are slidably installed on the mounting frame, the transverse ram is slidably installed on the crossbeam, the tool holder ram is slidably installed on the transverse ram ram, and the grinding wheel machine is fixed on the tool holder body. The whole structure is static and solid, so that the grinding wheel is not prone to vibration and deviation when working, further ensuring the flatness of the workpiece after processing, and the whole workpiece movement is a tight sliding working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of a device for high-precision machining of a butterfly valve body and valve plate sealing surface proposed by the present invention;

[0024] Figure 2 This is a side sectional view of a device for high-precision machining of a butterfly valve body and a valve plate sealing surface proposed by the present invention;

[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0027] Legend:

[0028] 11. Track 1; 12. Spindle; 13. Roller bearing; 14. Thrust ball bearing; 15. Second gear; 16. Motor 1; 17. First gear; 18. Base; 19. Workbench; 110. Track 2; 111. Mounting bracket; 21. Motor 3; 22. Screw 1; 23. Screw nut 1; 24. Horizontal slide; 31. Motor 2; 32. Screw 2; 33. Screw nut 2; 34. Crossbeam; 41. Motor 4; 42. Tool holder slide; 43. Screw rod three; 44. Screw nut three; 45. Tool holder slide; 46. Tool holder; 51. Motor five; 52. Screw rod four; 53. Screw nut four; 54. Vertical shaft frame; 55. Handwheel; 56. Upper center; 57. Center seat; 58. Screw one; 59. Track three; 61. Motor six; 62. Synchronous belt; 63. Grinding wheel; 64. Grinding wheel; 71. Center spindle; 72. Valve body; 73. Positioning sleeve; 74. Screw two; 75. Inclined plate fixture; 76. Rubber sheet. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Reference Figure 1-4 The present invention provides a device for high-precision machining of butterfly valve bodies and valve plate sealing surfaces: it includes a base 18, a workbench 19 and a mounting frame 111 fixedly connected to the front and back sides of the base 18, the workbench 19 is rotatably connected to the base 18 through a thrust ball bearing 14, and the inner side wall of the base 18 is connected to a first driving mechanism for driving the workbench 19 to rotate; the first driving mechanism includes a motor 16, the output shaft of the motor 16 is fixedly sleeved with a first gear 17, and the bottom of the workbench 19 is fixedly connected to a second gear 15 that meshes with the first gear 17, and the second gear 15 is fixedly connected to the workbench 19 by screws. When the first gear 17 drives the second gear 15 to rotate, the second gear 15 can drive the workbench 19 to rotate as a whole.

[0031] The main shaft 12 is fixedly connected to the middle of the base 18, and the main shaft 12 is rotatably connected to the workbench 19 through a roller bearing 13. A bevel plate tooling 75 is provided above the workbench 19, and a rubber plate 76 is provided at the bottom of the bevel plate tooling 75. The bevel plate tooling 75 and the rubber plate 76 are both fixedly connected to the workbench 19. A positioning sleeve 73 is provided in the middle of the bevel plate tooling 75, which is fixed to the top shaft 71 by screw 2 74. The rubber plate 76 bears the weight of the workpiece to be processed and plays a role in centering and centering the top shaft 71, so that the entire tooling parts float on the base 18.

[0032] The mounting frame 111 is connected to track 11 and track 2 110 on both sides respectively, and is slidably connected to a crossbeam 34 on the front side. The side wall of the mounting frame 111 is connected to a first adjustment mechanism for adjusting the up and down movement of the crossbeam 34. The first adjustment mechanism includes a motor 2 31 fixedly connected to the mounting frame 111, and a screw rod 1 32 is fixedly connected to the output end of the motor 2 31. A screw nut 2 33 is threadedly sleeved on the outer surface of the screw rod 1 32, and the screw nut 2 33 is fixedly connected to the side of the crossbeam 34. The crossbeam 34 is slidably mounted on the mounting frame 111 through a triangle and square groove structure.

[0033] The outer wall of the crossbeam 34 is slidably connected to a transverse slide 24, and the outer wall of the tool holder slide 45 is connected to a second adjustment mechanism for driving the transverse slide 24 to move left and right. The second adjustment mechanism includes a motor three 21 fixedly connected to the crossbeam 34, and the output end of the motor three 21 is fixedly connected to the lead screw two 22. The outer surface of the lead screw two 22 is threadedly sleeved with a lead screw nut one 23, and the transverse slide 24 is fixedly connected to the lead screw nut one 23.

[0034] A tool holder slide 45 and a third adjustment mechanism for adjusting the upper and lower positions of the tool holder slide 45 are provided on the front side of the transverse slide 24. The third adjustment mechanism includes a tool holder slide 45 fixedly connected to the transverse slide 24, and a tool holder slide rail 42 is slidably connected to the tool holder slide 45. A motor 41 is fixedly connected to the top of the tool holder slide rail 42, and a screw rod 3 43 is fixedly connected to the output end of the motor 41. A screw nut 3 44 is threadedly sleeved on the outer surface of the screw rod 3 43, and the screw nut 3 44 is fixedly installed on the side wall of the transverse slide 24. The transverse slide 24 is slidably installed on the crossbeam 34 through a triangle plus square groove structure, and the tool holder slide 45 is slidably installed on the transverse slide 24 through a triangle plus square groove structure, thereby achieving the purpose of static fit.

[0035] The bottom of the tool holder slide 42 is fixedly connected to the tool holder 46, the outer wall of the tool holder 46 is fixedly connected to the grinding machine 63, the grinding wheel 64 is provided on the grinding machine 63, and the tool holder 46 is connected to a second drive mechanism for driving the grinding wheel 64 to rotate; the second drive mechanism includes a motor 61 fixedly connected to the tool holder 46, the output shaft of the motor 61 is connected to the grinding wheel 64 through a synchronous belt 62, and a pulley for installing the synchronous belt 62 is fixedly sleeved on the output shaft of the motor 61 and the outer surface of the grinding wheel 64.

[0036] A vertical shaft frame 54 is slidably installed on the middle front side of the mounting frame 111, and a fourth adjustment mechanism for adjusting the upper and lower positions of the vertical shaft frame 54 is connected to the front side of the mounting frame 111. The fourth adjustment mechanism includes a track three 59 fixedly connected to the mounting frame 111, and the vertical shaft frame 54 is slidably installed on the track three 59. A motor five 51 is fixedly connected to the top of the track three 59, and a screw rod four 52 is fixedly connected to the output end of the motor five 51. A screw nut four 53 is threadedly sleeved on the outer surface of the screw rod four 52, and the screw nut four 53 is fixedly installed on the side wall of the mounting frame 111.

[0037] One end of the vertical shaft frame 54 is fixedly connected to a top mechanism for limiting the top of the top shaft 71. The top mechanism includes a top center seat 57 fixedly connected to the side wall of the vertical shaft frame 54. The side wall of the top center seat 57 passes through and is threadedly connected to an upper top center 56. The side wall of the top center seat 57 passes through and is threadedly connected to a screw 58 for tightening the upper top center 56. The top of the upper top center 56 is fixedly connected to a handwheel 55.

[0038] The present invention can be explained through the following operation mode:

[0039] When in use, the valve body 72 to be processed is fixedly connected to the inclined plate tooling 75 by bolts. At this time, the tool holder body 46 can be adjusted according to the angle of the sealing surface of the part. The specific adjustment method is: starting motor 2 31 drives screw rod 1 32 to rotate. At this time, screw nut 1 33 can drive the crossbeam 34 to move up and down as a whole. When starting motor 3 21, when motor 3 21 drives screw rod 2 22 to rotate, screw nut 2 23 can drive the transverse slide 24 to move left and right as a whole. When starting motor 41, when motor 41 drives screw rod 3 43 to rotate, screw nut 3 44 can drive the tool holder slide rail 42 and the tool holder body 46 to move up and down as a whole, thereby achieving the purpose of adjusting the position of the tool holder body 46.

[0040] Then the motor 51 can be started, and the motor 51 drives the screw rod 4 52 to rotate. At this time, the screw nut 4 53 drives the vertical shaft frame 54 to move downward as a whole until the top center seat 57 is set close to the top shaft 71. Then the adjusting hand wheel 55 is turned, and the adjusting hand wheel 55 drives the upper top center 56 to rotate. The upper top center 56 moves downward until the upper end of the top shaft 71 enters the shaft socket at the bottom of the upper top center 56. Finally, the screw 1 58 is turned to further tighten the upper top center 56 with the screw 1 58.

[0041] Start motor 16, which drives the second gear 15 to rotate through the first gear 17. When the second gear 15 rotates, the workbench 19 is driven to rotate as a whole. Start motor 61, which drives the grinding wheel 64 to rotate through the synchronous belt 62. The rotating grinding wheel 64 starts to process the workpiece.

[0042] After the processing is completed, the motor 61 is turned off and the motor 51 is started to rotate in the opposite direction, so that the vertical shaft frame 54 moves up and drives the upper center 56 to separate from the top shaft 71, and then the processed workpiece is removed from the inclined plate tooling 75.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for high-precision machining of a butterfly valve body and a valve plate sealing surface, comprising a base (18), a tool holder slide rail (42), a workbench (19), and a mounting frame (111) fixedly connected to the front and back sides of the base (18), characterized in that: The workbench (19) is rotatably connected to the base (18) via a thrust ball bearing (14), and the inner side wall of the base (18) is connected to a first driving mechanism for driving the workbench (19) to rotate; a main shaft (12) is fixedly connected to the middle of the base (18), and the main shaft (12) is rotatably connected to the workbench (19) via a roller bearing (13), and a bevel plate fixture (75) is provided above the workbench (19), and a rubber bottom is provided on the bevel plate fixture (75). The rubber plate (76) is fixedly connected to the workbench (19), and the incline plate fixture (75) and the rubber plate (76) are fixedly connected to the workbench (19). The incline plate fixture (75) is connected to a positioning sleeve (73) in the middle and is fixed to the top shaft (71) by screw 2 (74); the two sides of the mounting frame (111) are respectively connected to the track 1 (11) and the track 2 (110), and the front side is slidably connected to the beam (34). The side wall of the mounting frame (111) is connected to a screw for adjusting the upper surface of the beam (34). The first adjustment mechanism for downward movement, the outer wall of the crossbeam (34) is slidably connected to a transverse slide (24), the outer wall of the crossbeam (34) is connected to a second adjustment mechanism for driving the transverse slide (24) to move left and right, the front side of the transverse slide (24) is provided with a tool holder slide (45) and a third adjustment mechanism for adjusting the upper and lower positions of the tool holder slide (45), the bottom of the tool holder slide rail (42) is fixedly connected to a tool holder (46), the outer wall of the tool holder (46) is fixedly connected to a grinding wheel (63), the grinding wheel (63) is provided with a grinding wheel (64), and the tool holder (46) is connected to a second driving mechanism for driving the grinding wheel (64) to rotate; the middle front face of the mounting frame (111) is slidably mounted with a vertical shaft frame (54), the front face of the mounting frame (111) is connected to a fourth adjustment mechanism for adjusting the upper and lower positions of the vertical shaft frame (54), and one end of the vertical shaft frame (54) is fixedly connected to a top mechanism for limiting the top position of the top spindle (71).

2. The device for high-precision machining of butterfly valve body and valve plate sealing surface according to claim 1, characterized in that: The first driving mechanism comprises a motor 1 (16), an output shaft of the motor 1 (16) is fixedly sleeved with a first gear (17), and the bottom of the workbench (19) is fixedly connected with a second gear (15) meshing with the first gear (17).

3. The device for high-precision machining of butterfly valve body and valve plate sealing surface according to claim 1, characterized in that: The first adjustment mechanism includes a second motor (31) fixedly connected to the mounting frame (111), the output end of the second motor (31) is fixedly connected to a first screw (32), the outer surface of the first screw (32) is threadedly sleeved with a second screw nut (33), and the second screw nut (33) is fixedly connected to the side of the crossbeam (34).

4. The device for high-precision machining of butterfly valve body and valve plate sealing surface according to claim 1, characterized in that: The second adjustment mechanism includes a motor three (21) fixedly connected to the crossbeam (34), the output end of the motor three (21) is fixedly connected to the screw rod two (22), the outer surface of the screw rod two (22) is threadedly sleeved with a screw nut one (23), and the transverse slide (24) is fixedly connected to the screw nut one (23).

5. The device for high-precision machining of butterfly valve body and valve plate sealing surface according to claim 1, characterized in that: The third adjustment mechanism includes a tool holder slide (45) fixedly connected to the transverse slide (24), the tool holder slide (45) is slidably connected to the tool holder slide rail (42), the top of the tool holder slide rail (42) is fixedly connected to a motor four (41), the output end of the motor four (41) is fixedly connected to a screw rod three (43), the outer surface of the screw rod three (43) is threadedly sleeved with a screw nut three (44), and the screw nut three (44) is fixedly installed on the side wall of the transverse slide (24).

6. The device for high-precision machining of butterfly valve body and valve plate sealing surface according to claim 1, characterized in that: The second driving mechanism comprises a sixth motor (61) fixedly connected to the tool holder (46), and the output shaft of the sixth motor (61) is connected to the grinding wheel (64) through a synchronous belt (62).

7. The device for high-precision machining of butterfly valve body and valve plate sealing surface according to claim 1, characterized in that: The fourth adjustment mechanism includes a track three (59) fixedly connected to the mounting frame (111), the mounting frame (111) is slidably mounted on the track three (59), the top of the track three (59) is fixedly connected to the motor five (51), the output end of the motor five (51) is fixedly connected to the screw rod four (52), the outer surface of the screw rod four (52) is threadedly sleeved with a screw nut four (53), and the screw nut four (53) is fixedly mounted on the bottom plate of the vertical shaft frame (54).

8. The device for high-precision machining of butterfly valve body and valve plate sealing surface according to claim 1, characterized in that: The top mechanism includes a top center seat (57) fixedly connected to the side wall of the vertical shaft frame (54), the side wall of the top center seat (57) is penetrated by and threadedly connected to an upper top center (56), the side wall of the top center seat (57) is penetrated by and threadedly connected to a screw (58) for tightening the upper top center (56), and the top of the upper top center (56) is fixedly connected to a hand wheel (55).

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