Special device for finish turning of eccentric shape of flange

Abstract

The invention belongs to the technical field of flange machining equipment manufacturing, and particularly relates to a flange eccentric appearance finish turning special device which comprises a bottom plate, a stud is fixedly connected to the upper surface of the bottom plate, a gasket is arranged outside the stud, the outer wall of the stud penetrates through the inner wall of the gasket, the outer wall of the stud is in threaded connection with a first nut, and the first nut is in threaded connection with a second nut. The first nut is arranged above the gasket, the internal fixing device comprises a positioning axis and a variable-diameter supporting mechanism, the variable-diameter supporting mechanism comprises a sliding rod, an ejector block, a moving rod, a rotating ring, a first fluted disc and a rotating plate, the outer wall of the sliding rod is in sliding connection with the inner wall of the positioning axis, and the sliding direction of the sliding rod is the radial direction of the end face of the positioning axis. The adjusting device and the positioning axis are used in cooperation, so that the distance between the positioning axis and the axis of the bottom plate can be adjusted, eccentric flanges with different eccentric degrees can be placed outside the positioning axis, and the effect of fixing the eccentric flanges with different eccentric degrees is achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of flange processing equipment manufacturing, and specifically relates to a special device for fine turning of eccentric flange shapes. Background Art

[0002] An eccentric flange is a flange connection that achieves special functions through an asymmetric structural design. Its core feature is the offset between the geometric center of the flange end face or sealing surface and the pipe axis. This design allows it to adapt to complex pipeline layouts, compensate for installation errors, or meet specific operating requirements.

[0003] Since the eccentricity and inner and outer diameters of different eccentric flanges are often different, it is often difficult to use the same fixture to fix eccentric flanges of different models when processing the eccentric flanges. Therefore, it is necessary to design a special device for fine turning the eccentric appearance of the flange to solve the above problem. Summary of the Invention

[0004] The purpose of this application is to address the shortcomings of the existing technology. An internal fixing device is used to support the inner circumference of the flange, and then the upper and lower end surfaces are fixed with upper and lower fixing devices. A special device for fine turning the eccentric appearance of the flange is designed to solve the problem of inconvenience in fixing eccentric flanges of different models.

[0005] In order to achieve the above objectives, the following technical solutions are adopted:

[0006] A special device for fine turning of eccentric flange shapes includes upper and lower fixing devices and an internal fixing device. The internal fixing device is arranged on the upper side of the upper and lower fixing devices and slides radially along the upper and lower fixing devices. The internal fixing device is connected to the upper and lower fixing devices through a position adjustment device.

[0007] Preferably, the upper and lower fixing devices include a base plate, the upper surface of the base plate is fixedly connected to a stud, a washer is provided on the outside of the stud, the outer wall of the stud passes through the inner wall of the washer, the outer wall of the stud is threadedly connected to a nut 1, and the nut 1 is provided above the washer.

[0008] Preferably, the internal fixing device includes a positioning axis and a variable diameter support mechanism.

[0009] Preferably, the variable diameter support mechanism includes a sliding rod, a top block, a moving rod, a rotating ring, a gear disc 1, a rotating plate, and a gear disc 2. The outer wall of the sliding rod is slidably connected to the inner wall of the positioning shaft, the sliding direction of the sliding rod is the radial direction of the end face of the positioning shaft, the shape of the top block is arc-shaped, the end of the sliding rod away from the axis of the positioning shaft is fixedly connected to the inner arc surface of the top block, the outer wall of the rotating ring is rotatably connected to the inner wall of the positioning shaft, the inner wall of the rotating ring is provided with a control groove, the moving rod is arranged inside the control groove, the outer wall of the moving rod passes through and is aligned with the inner wall of the sliding rod The wall is fixedly connected, the inner wall of the rotating ring is fixedly connected with a rotating tube, the outer wall of the rotating tube is rotatably connected to the inner wall of the positioning axis, the inner wall of the rotating tube is slidably connected with a control rod, the lower end of the control rod is fixedly connected to the upper surface of the gear disc one, the upper surface of the gear disc one is fixedly connected with a sliding rod, the sliding rod is arranged on the outside of the control rod, the outer wall of the sliding rod passes through and is slidably connected to the inner wall of the rotating plate, the lower surface of the rotating plate is elastically connected to the upper surface of the gear disc one by a spring, and the lower end of the gear disc two is fixedly connected to the inner wall of the positioning axis.

[0010] Preferably, the position adjustment device includes a slide groove, a slider, a fixed block, a screw and a nut. The slide groove is opened on the upper left side of the base plate, the slide groove passes through the center of the base plate, and the left end of the slide groove extends to the outside of the base plate. The inner wall of the slide groove is slidably connected with the slider, the outer wall of the slider is slidably connected to the inner wall of the slide groove, the upper side of the slider is fixedly connected to the lower surface of the positioning axis, the inner wall of the slide groove is rotatably connected to the right side of the screw, the outer wall of the screw passes through and is threadedly connected to the inner wall of the slider, the inner wall of the slide groove is fixedly connected to the outer wall of the fixed block, the inner wall of the fixed block passes through and is rotatably connected to the outer wall of the screw, and the outer wall of the screw passes through and is threadedly connected to the inner wall of the nut.

[0011] Preferably, the screw is provided with two threaded areas, one threaded area is provided on the left side of the fixed block, and the other threaded area is provided on the right side of the fixed block. The area of ​​the screw on the inner side of the fixed block is not provided with threads, the slider is provided in the threaded area of ​​the screw on the right side of the fixed block, and the nut 2 is threadedly connected to the threaded area of ​​the screw on the left side of the fixed block.

[0012] Preferably, a backing plate is fixedly connected to the outer circumferential surface of the top block.

[0013] Preferably, the upper portion of the control rod passes through the inner wall of the positioning axis, and the upper end of the control rod is fixedly connected with an anti-slip knob.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. This application adopts the coordinated use of the adjustment device and the positioning axis, so that the distance between the positioning axis and the axis of the base plate can be adjusted, so that eccentric flanges with different degrees of eccentricity can be placed outside the positioning axis, thereby achieving the effect of fixing eccentric flanges with different degrees of eccentricity.

[0016] 2. This application adopts a variable diameter support mechanism so that the top block and the pad can move outward at different distances, thereby ensuring that the inner circular shaft surfaces of eccentric flanges with different inner diameters can all contact the outer surface of the pad, thereby achieving the effect of fixing the inner circumferential surfaces of eccentric flanges with different inner diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of this application;

[0018] Figure 2 This is a schematic diagram of the disassembly of the stud, washer and nut in this application;

[0019] Figure 3 This is a schematic diagram of the splitting in this application;

[0020] Figure 4 This is a schematic diagram of the structure of the screw, slider, fixed block, and nut 2 in this application;

[0021] Figure 5 This is a schematic diagram of a longitudinal cross-section of the internal fixing device in this application;

[0022] Figure 6 This is a schematic diagram of a transverse cross-section of the internal fixing device in this application;

[0023] Figure 7 Schematic cross-sectional view of the variable diameter support mechanism in this application;

[0024] Figure 8 for Figure 7 Schematic diagram of the enlarged three-dimensional structure of part A.

[0025] Among them, 1. upper and lower fixing devices; 2. internal fixing devices; 3. adjusting device; 11. bottom plate; 12. stud; 13. washer; 14. nut one; 21. positioning axis; 22. variable diameter support mechanism; 221. sliding rod; 222. top block; 223. moving rod; 224. swivel; 225. rotating tube; 226. control rod; 227. gear disc one; 228. sliding rod; 229. rotating plate; 2210. spring; 2211. gear disc two; 2212. pad; 2213. control groove; 31. slide groove; 32. slider; 33. fixing block; 34. screw; 35. nut two. DETAILED DESCRIPTION

[0026] Reference Figure 1-Figure 3A special device for fine turning of eccentric flange appearance includes an upper and lower fixing device 1 and an internal fixing device 2. The upper and lower fixing device 1 is used to contact the upper and lower end surfaces of the eccentric flange and achieve its fixing effect by applying force in the upper and lower directions. The internal fixing device 2 is arranged on the upper side of the upper and lower fixing devices 1, and the internal fixing device 2 slides along the radial direction of the upper and lower fixing devices 1. The slidable setting of the internal fixing device 2 ensures that eccentric flanges with different degrees of eccentricity can be fixed. The internal fixing device 2 is connected to the upper and lower fixing devices 1 through a position adjustment device 3. The position adjustment device 3 is used to adjust the position of the internal fixing device 2 so that its final position conforms to the eccentricity of the eccentric flange being processed.

[0027] In this embodiment, when in use, the staff first places the eccentric flange on the upper surface of the upper and lower fixing devices 1, and then fixes the inner circumferential surface of the eccentric flange through the internal fixing device 2. When the fixation is completed, the position of the internal fixing device 2 is adjusted by the position adjustment device 3, so that the internal fixing device 2 drives the eccentric flange to move synchronously with it during the movement, so that the eccentric flange finally moves to the middle of the upper and lower fixing devices 1. After the movement is completed, the upper and lower end faces of the eccentric flange are fixed by the upper and lower fixing devices 1.

[0028] As a preferred embodiment, the upper and lower fixing devices 1 include a base plate 11, which is cylindrical in shape. The diameter of the base plate 11 is larger than the outer diameter of the flange fixed by the fixture. The upper surface of the base plate 11 is fixedly connected with a stud 12, and the outer wall of the stud 12 is provided with a threaded area. A gasket 13 is provided on the outside of the stud 12. The lower surface of the gasket 13 is used to fix the upper surface of the eccentric flange. The outer wall of the stud 12 passes through the inner wall of the gasket 13. The outer wall of the stud 12 is threadedly connected with a nut 14. The nut 14 is provided above the gasket 13. The eccentric flange The lower surface of the eccentric flange is placed on the upper surface of the base plate 11. After the final position of the eccentric flange is adjusted by the position adjustment device 3, the washer 13 is first passed through the stud 12, and then the nut 14 is rotated so that the nut 14 moves downward during the rotation. When the nut 14 is rotated to contact the upper surface of the washer 13, the nut 14 drives the washer 13 to move downward together until the lower surface of the washer 13 contacts the upper surface of the eccentric flange. At this time, the eccentric flange is fixed in the upper and lower directions because its lower surface contacts the base plate 11 and its upper surface is contacted by the washer 13.

[0029] As a preferred method, the internal fixing device 2 includes a positioning axis 21 and a variable diameter support mechanism 22. The eccentric flange is sleeved on the outside of the positioning axis 21. Through the setting of the variable diameter support mechanism 22, eccentric flanges with different inner diameters can be fixed. When in use, the eccentric flange is first sleeved on the outside of the positioning axis 21, and then the variable diameter support mechanism 22 is used to support the inner circumference of the eccentric flange so that it is fixed relative to the positioning axis 21.

[0030] As a preferred embodiment, the variable diameter support mechanism 22 includes a slide bar 221, a top block 222, a movable rod 223, a rotating ring 224, a gear disc 1 227, a rotating plate 229, and a gear disc 2211. The outer wall of the slide bar 221 is slidably connected to the inner wall of the positioning shaft 21. The sliding direction of the slide bar 221 is the radial direction of the end face of the positioning shaft 21. The number of the slide bars 221 is set to multiple, and the multiple slide bars 221 are linearly arrayed with the axis of the positioning shaft 21. The shape of the top block 222 is arc-shaped. The end of the slide bar 221 away from the axis of the positioning shaft 21 is fixedly connected to the inner arc surface of the top block 222. The outer wall of the rotating ring 224 is rotatably connected to the inner wall of the positioning shaft 21. The interior of the positioning shaft 21 is provided with The cylindrical groove that makes the swivel 224 rotate is provided with two swivels 224, and the two swivels 224 are respectively provided on the upper and lower sides of the slide bar 221, and the distance between the swivel 224 and the slide bar 221 is preset. The inner wall of the swivel 224 is provided with a control groove 2213, and the shape of the control groove 2213 is arc-shaped, and the distance between the control groove 2213 and the center of the swivel 224 is different. The moving rod 223 is provided inside the control groove 2213, and the outer wall of the moving rod 223 passes through and is fixedly connected to the inner wall of the slide bar 221. By means of fixed connection, it is ensured that the moving rod 223 can only slide relative to the positioning axis 21, and the inner wall of the swivel 224 is fixedly connected with the rotating tube 225 The outer wall of the rotating tube 225 is rotatably connected to the inner wall of the positioning axis 21, and the rotating tube 225 is coaxially arranged with the positioning axis 21. The inner wall of the rotating tube 225 is slidably connected with a control rod 226. The shape of the control rod 226 is cylindrical, and the outer wall of the control rod 226 is provided with a rectangular parallelepiped protrusion. The interior of the rotating tube 225 is provided with a groove whose shape matches the shape of the external protrusion of the control rod 226. When the control rod 226 rotates, its external protrusion can push the groove on the inner wall of the rotating tube 225, thereby driving the rotating tube 225 to rotate synchronously with it. The lower end of the control rod 226 is fixedly connected to the upper surface of the toothed disc 227. The control rod 226 is coaxially arranged with the toothed disc 227. The toothed disc 227 is coaxially arranged with the toothed disc 227. The lower surface of the gear disc 227 is provided with teeth, and the tip of the teeth is provided at the lower end. The upper surface of the gear disc 1 227 is fixedly connected with a sliding rod 228. The sliding rod 228 is provided on the outer side of the control rod 226. The outer wall of the sliding rod 228 passes through and is slidably connected with the inner wall of the rotating plate 229. Through the setting of the sliding rod 228, the sliding rod 228 and the rotating plate 229 rotate synchronously. The lower surface of the rotating plate 229 and the upper surface of the gear disc 1 227 are elastically connected by a spring 2210. One end of the spring 2210 is fixedly connected to the lower surface of the rotating plate 229, and the other end of the spring 2210 is fixedly connected to the upper surface of the gear disc 1 227. The lower end of the gear disc 2211 is fixedly connected to the inner wall of the positioning axis 21.

[0031] After the eccentric flange is installed on the outside of the positioning shaft 21, the staff first pulls the control rod 226 upward. When the control rod 226 is subjected to force, it moves upward, thereby driving the toothed disc 1 227 to move upward. At this time, the teeth of the toothed disc 1 227 and the teeth of the toothed disc 2 2211 are separated from each other. At this time, the staff rotates the control rod 226. When the control rod 226 is rotated, its external protrusion drives the rotating tube 225 to rotate synchronously with it, thereby causing the rotating tube 225 to drive the rotating ring 224 to rotate. When the rotating ring 224 rotates, the control slot 2213 is in the position where the moving rod 223 moves. The distance between the position on the track and the axis of the positioning axis 21 becomes larger, so that the moving rod 223 moves outward and drives the sliding rod 221 to move outward, so that the top block 222 moves outward under the drive of the sliding rod 221 and supports the inner circumference of the eccentric flange; when the fixation is completed, the staff releases the control rod 226, and at this time the gear disc 1 227 moves toward the direction close to the gear disc 2 2211 under the elastic force of the spring 2210, so that the gear disc 1 227 contacts the teeth of the gear disc 2 2211, so that the rotation position of the rotating ring 224 is fixed.

[0032] As a preferred way, the position adjustment device 3 includes a slide groove 31, a slider 32, a fixing block 33, a screw rod 34 and a nut 35. The slide groove 31 is opened on the upper left side of the bottom plate 11, the slide groove 31 passes through the center of the bottom plate 11, and the left end of the slide groove 31 extends to the outside of the bottom plate 11. The inner wall of the slide groove 31 is slidably connected with the slider 32, and the outer wall of the slider 32 is slidably connected to the inner wall of the slide groove 31. The upper side of the slider 32 is fixedly connected to the lower surface of the positioning axis 21. Through the setting of the slider 32, the slider 32 can drive the positioning axis 21 to move left and right after moving left and right. The inner wall of the slide groove 31 is rotatably connected to the right side of the screw rod 34, and the outer wall of the screw rod 34 passes through and is threadedly connected to the inner wall of the slider 32. The inner wall of the screw rod 34 is provided with a thread groove matching the thread shape of the screw rod 34. The second nut 35 is used to fix the screw 34 so that it cannot rotate. When in use, the staff first rotates the screw 34. At this time, since the slider 32 slides relative to the slide groove 31, the slider 32 cannot rotate with the rotation of the screw 34. Therefore, the slider 32 slides relative to the slide groove 31 at this time, and the slider 32 can drive the positioning axis 21 to move synchronously with it during the sliding process, so as to achieve the effect of adjusting the position of the positioning axis 21. When the adjustment is completed, the staff fixes the screw 34 through a locking piece, such as a wrench, and rotates the second nut 35 at the same time, so that the second nut 35 moves toward the direction close to the axis of the base plate 11 during the rotation until it contacts the left surface of the fixed block 33.

[0033] As a preferred method, the screw 34 is provided with two threaded areas, one threaded area is provided on the left side of the fixed block 33, and the threaded area at this position is used to cooperate with the nut 2 35 to lock the screw 34, and the other threaded area is provided on the right side of the fixed block 33, and is used to drive the radial movement of the positioning axis 21 to adjust the position of the positioning axis 21. The area where the screw 34 is located on the inner side of the fixed block 33 is not provided with threads. By not providing threads, the screw 34 at this position can be completely fitted with the inner circumferential surface of the fixed block 33, thereby achieving a supporting effect on the screw 34. The slider 32 is provided in the threaded area where the screw 34 is located on the right side of the fixed block 33, and the nut 2 35 is threadedly connected to the threaded area of ​​the screw 34 on the left side of the fixed block 33. As a preferred method, the outer circumferential surface of the top block 222 is fixedly connected with a pad 2212, and the pad 2212 is made of a flexible material. The material setting of the pad 2212 ensures that it can deform after being subjected to force, thereby ensuring that when the curvature of the inner arc surface of the eccentric flange is different, the pad 2212 can fit its inner arc surface after being deformed under force.

[0034] As a preferred method, the upper part of the control rod 226 passes through the inner wall of the positioning axis 21, and the upper end of the control rod 226 is fixedly connected with an anti-slip knob. Through the setting of the anti-slip knob, the staff can better move or rotate the control rod 226.

Claims

1. A special device for finishing the eccentric shape of flange, characterized in that: The invention comprises an upper and lower fixing device (1) and an internal fixing device (2), wherein the internal fixing device (2) is arranged on the upper side of the upper and lower fixing device (1), and the internal fixing device (2) slides along the radial direction of the upper and lower fixing device (1), and the internal fixing device (2) is connected to the upper and lower fixing device (1) via a position adjustment device (3).

2. A special device for finishing the eccentric shape of flange according to claim 1, characterized in that: The upper and lower fixing devices (1) include a base plate (11), the upper surface of the base plate (11) is fixedly connected with a stud (12), the outside of the stud (12) is provided with a washer (13), the outer wall of the stud (12) passes through the inner wall of the washer (13), the outer wall of the stud (12) is threadedly connected with a nut (14), and the nut (14) is provided above the washer (13).

3. A special device for finishing the eccentric shape of flange according to claim 1, characterized in that: The internal fixing device (2) comprises a positioning axis (21) and a variable diameter support mechanism (22).

4. A special device for finishing the eccentric shape of flange according to claim 3, characterized in that: The variable diameter support mechanism (22) comprises a slide bar (221), a top block (222), a moving rod (223), a rotating ring (224), a toothed disc 1 (227), a rotating plate (229), and a toothed disc 2 (2211). The outer wall of the slide bar (221) is slidably connected to the inner wall of the positioning shaft (21). The sliding direction of the slide bar (221) is the radial direction of the end face of the positioning shaft (21). The top block (222) is in an arc shape. The end of the slide bar (221) away from the axis of the positioning shaft (21) is fixedly connected to the inner arc surface of the top block (222). The outer wall of the rotating ring (224) is rotatably connected to the inner wall of the positioning shaft (21). The inner wall of the rotating ring (224) is provided with a control groove (2213). The moving rod (223) is arranged inside the control groove (2213). The outer wall of the moving rod (223) passes through and is in contact with the inner wall of the positioning shaft (21). The inner wall of the sliding rod (221) is fixedly connected, the inner wall of the rotating ring (224) is fixedly connected with a rotating tube (225), the outer wall of the rotating tube (225) is rotatably connected to the inner wall of the positioning shaft (21), the inner wall of the rotating tube (225) is slidably connected with a control rod (226), the lower end of the control rod (226) is fixedly connected to the upper surface of the toothed disc 1 (227), the upper surface of the toothed disc 1 (227) is fixedly connected with a sliding rod (228), the sliding rod (228) is arranged on the outer side of the control rod (226), the outer wall of the sliding rod (228) passes through and is slidably connected to the inner wall of the rotating plate (229), the lower surface of the rotating plate (229) is elastically connected to the upper surface of the toothed disc 1 (227) through a spring (2210), and the lower end of the toothed disc 2 (2211) is fixedly connected to the inner wall of the positioning shaft (21).

5. The special device for finishing the eccentric flange according to claim 1, characterized in that: The position adjustment device (3) includes a slide groove (31), a slider (32), a fixed block (33), a screw (34) and a nut (35). The slide groove (31) is opened on the upper left side of the bottom plate (11). The slide groove (31) passes through the center of the bottom plate (11). The left end of the slide groove (31) extends to the outside of the bottom plate (11). The inner wall of the slide groove (31) is slidably connected to the slider (32). The outer wall of the slider (32) is slidably connected to the inner wall of the slide groove (31). The upper side of (32) is fixedly connected to the lower surface of the positioning axis (21), the inner wall of the slide groove (31) is rotatably connected to the right side of the screw rod (34), the outer wall of the screw rod (34) passes through and is threadedly connected to the inner wall of the slider (32), the inner wall of the slide groove (31) is fixedly connected to the outer wall of the fixed block (33), the inner wall of the fixed block (33) passes through and is rotatably connected to the outer wall of the screw rod (34), and the outer wall of the screw rod (34) passes through and is threadedly connected to the inner wall of the nut second (35).

6. A special device for finishing the eccentric shape of flange according to claim 5, characterized in that: The screw rod (34) is provided with two threaded areas, one threaded area is provided on the left side of the fixed block (33), and the other threaded area is provided on the right side of the fixed block (33). The area of ​​the screw rod (34) located inside the fixed block (33) is not provided with threads. The slider (32) is provided in the threaded area of ​​the screw rod (34) located on the right side of the fixed block (33). The second nut (35) is threadedly connected to the threaded area of ​​the screw rod (34) located on the left side of the fixed block (33).

7. A special device for finishing the eccentric shape of flange according to claim 4, characterized in that: A backing plate (2212) is fixedly connected to the outer circumferential surface of the top block (222).

8. A special device for finishing the eccentric shape of flange according to claim 4, characterized in that: The upper portion of the control rod (226) passes through the inner wall of the positioning axis (21), and the upper end of the control rod (226) is fixedly connected with an anti-slip knob.

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