A turning device for machining a pump housing

Abstract

The application relates to the field of turning technology, in particular to a turning device for pump shell machining, which comprises a turning table and an adjusting seat arranged above the turning table, a collecting hopper is fixedly connected and penetrates the turning table, the collecting hopper is located below the adjusting seat, a turnover unit for driving the adjusting seat to turn over is installed on the turning table, a rotary shell is arranged above the adjusting seat, and a self-rotation structure for driving the rotary shell to self-rotate is arranged on the adjusting seat; the turning device realizes the simultaneous clamping of the inner wall and the outer wall of a workpiece to be machined, the double-face clamping mode of first centering and then clamping greatly improves the clamping stability, effectively avoids the thin-wall deformation caused by one-side clamping, and is especially suitable for the turning machining of pump shell type special-shaped thin-wall rotary workpieces.

Description

Technical Field

[0001] This invention relates to the field of turning technology, and in particular to a turning apparatus for machining pump casings. Background Technology

[0002] As the core component of a centrifugal pump, the pump casing typically features a volute-shaped flow channel and a thin-walled tubular interface. Its port ring mounting hole, sealing end face, and other parts require machining to ensure roundness and coaxiality. Existing pump casing machining turning devices often use a three-jaw chuck or a special fixture to directly clamp the outer or inner wall of the pump casing, and then the spindle drives the workpiece to rotate for turning. However, this approach has significant drawbacks in practical use. When clamping a thin-walled pump casing on one side, the concentrated clamping force can easily cause elliptical deformation of the workpiece. Furthermore, the chips generated during turning tend to remain inside the pump casing cavity, requiring manual cleaning after machine shutdown, further reducing the machining cycle time.

[0003] Therefore, in order to solve the above problems, a more suitable facility that meets the needs of users is needed. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a turning device for processing pump casings, so as to solve the problem that the concentration of clamping force when clamping a thin-walled pump casing on one side can easily cause the workpiece to undergo elliptical deformation.

[0005] To achieve the above objectives, the present invention provides a turning device for processing pump casing, including a turning table and an adjusting seat disposed above the turning table. A fixedly connected collection hopper passes through the turning table and is located below the adjusting seat. A turning unit for driving the adjusting seat to rotate is installed on the turning table. A rotating shell is provided above the adjusting seat, and a rotation structure for driving the rotating shell to rotate is provided on the adjusting seat. The rotating shell contains several translation columns, each with two grippers above it. The top of the inner wall of the rotating shell has several clearance holes, through which the grippers pass. An adjusting base is equipped with a synchronous mover for driving the vertical movement of the translation columns. The rotating shell is equipped with an adjusting unit for driving the translation columns to move closer together or further apart. Each translation column has an anti-directional sliding structure for changing the distance between adjacent grippers. A turning mechanism for turning is mounted on the turning table. The adjusting unit… The entire unit drives all translation columns to move away from each other, so that each gripper located inside the workpiece synchronously fits against the inner wall of the workpiece and forms a centered position. After the centered position is completed, the synchronous mover drives all translation columns to move upward, and then drives each pair of grippers to move closer together through the opposite sliding structure on each translation column. At this time, the grippers located inside the workpiece keep in contact with the inner wall of the workpiece, and the grippers located outside the workpiece move towards the outer wall of the workpiece. Finally, each pair of grippers clamps the inner wall and the outer wall of the workpiece at the same time, realizing centering first and then uniform clamping.

[0006] Optionally, the opposite sliding structure includes a lifting seat fixedly installed on the top of the translation column, two movable columns fixedly connected to the sides of two adjacent grippers that are far apart, four inclined first rectangular holes opened on the lifting seat, and the movable columns slidably installed in the corresponding first rectangular holes, a guide strip provided above the translation column, the guide strip being fixedly connected to the inner wall of the rotating shell, and the grippers being slidably sleeved on the outside of the corresponding guide strip.

[0007] Optionally, the turning mechanism includes a mounting frame fixedly mounted on the turning table, a sliding seat slidably mounted on the mounting frame, a lead screw rotatably connected to the mounting frame, the sliding seat being sleeved outside the lead screw, and the connection between the sliding seat and the lead screw being a threaded connection, a first servo motor fixedly connected to the mounting frame, and the output end of the first servo motor being fixedly connected to the lead screw, a second electric push rod fixedly connected to the sliding seat, a tool holder fixedly connected to the telescopic end of the second electric push rod, and turning tools fixedly connected to both sides of the tool holder.

[0008] Optionally, the synchronous mover includes a lifting ring disposed between the adjusting seat and the rotating shell. A plurality of first electric push rods are fixedly connected to the adjusting seat, and the telescopic ends of the first electric push rods are fixedly connected to the lifting ring. An annular groove is provided on the top of the lifting ring, and a guide ring is rotatably connected in the annular groove. A plurality of first fixing plates are fixedly connected to the top of the guide ring. A first sliding groove is provided on the top of the first fixing plate, and a slider is slidably disposed in the first sliding groove. A plurality of third rectangular holes are provided on the bottom of the inner wall of the rotating shell, and a translation column passes through the corresponding third rectangular hole, and the bottom end of the translation column is fixedly connected to the corresponding slider.

[0009] Optionally, the bottom end of the guide ring is rotatably connected to a plurality of first balls, and the first balls are in contact with the inner wall of the annular groove; the bottom end of the slider is rotatably connected to a plurality of second balls, and the second balls are in contact with the inner wall of the first sliding groove.

[0010] Optionally, the self-rotating structure includes a support sleeve fixedly installed at the bottom of the rotating shell. The bottom end of the support sleeve is rotatably connected to the adjusting seat. A rotating shaft is provided inside the support sleeve and passes through the adjusting seat. A fixed ring is slidably fitted on the outside of the rotating shaft. The fixed ring is fixedly connected to the inner wall of the support sleeve. A plug-in component adapted to the fixed ring is installed on the rotating shaft. A movable frame is rotatably fitted on the outside of the rotating shaft. Several third electric push rods are fixedly connected to the adjusting seat, and the telescopic ends of the third electric push rods are fixedly connected to the movable frame. A second sliding groove is opened at the bottom of the rotating shaft. A prism is slidably provided in the second sliding groove. A second servo motor is fixedly connected to the adjusting seat, and the output end of the second servo motor is fixedly connected to the bottom end of the prism. A first friction ring is fixedly fitted on the outside of the support sleeve. Several friction plates are provided above the first friction ring. The movable frame passes through the adjusting seat, and the friction plates are fixedly connected to the movable frame.

[0011] Optionally, the connector includes a first friction disc fixedly installed on the top of the rotating shaft, a plurality of insert rods provided below the first friction disc, a plurality of insertion holes adapted to the insert rods provided on the fixing ring, a fixing sleeve provided on the outside of the insert rods, the top end of the fixing sleeve being fixedly connected to the bottom of the first friction disc, a first compression spring provided inside the fixing sleeve, and the two ends of the first compression spring being fixedly connected to the first friction disc and the insert rods respectively.

[0012] Optionally, the adjustment unit includes a rotating disk rotatably installed inside a rotating shell. The rotating disk has several second rectangular holes, and a translation column is slidably installed in the corresponding second rectangular holes. A support shaft is rotatably connected inside the rotating shell, and the support shaft passes through the rotating disk. A second friction disk located inside a support sleeve is fixedly connected to the bottom end of the support shaft, and the top of the first friction disk and the bottom of the second friction disk are in contact. A second friction ring is sleeved on the outside of the support shaft, and the bottom of the second friction ring is in contact with the top of the rotating disk. An elastic element adapted to the second friction ring is installed on the support shaft.

[0013] Optionally, the elastic element includes a second fixing plate fixedly sleeved outside the support shaft, a plurality of guide posts passing through the second fixing plate, the bottom end of the guide posts being fixedly connected to the top of the second friction ring, a second compression spring being sleeved outside the guide posts, and the two ends of the second compression spring being fixedly connected to the top of the second friction ring and the bottom of the second fixing plate, respectively.

[0014] Optionally, the flipping unit includes fixed shafts respectively fixedly installed on both sides of the adjustment seat, the fixed shafts being rotatably connected to the turning table, a third servo motor being fixedly connected to the turning table, and the output end of the third servo motor being fixedly connected to a corresponding fixed shaft, and two fourth electric push rods being fixedly connected to the turning table, the telescopic ends of the fourth electric push rods being fixedly connected to a positioning seat for pressing the adjustment seat.

[0015] The beneficial effects of this invention are as follows: By setting a flipping unit to drive the adjusting seat to flip 90 degrees, the rotating shell and the workpiece on it are switched from the loading position to the turning position. Turning waste falls directly into the collection hopper under gravity. After turning, the shell is flipped 90 degrees again so that the workpiece is below the rotating shell, allowing residual waste inside the workpiece to be completely dumped into the collection hopper. This achieves a three-in-one position conversion of clamping, turning, and chip removal. Furthermore, by pre-driving several translation columns away from each other through the adjusting unit, the grippers located inside the workpiece abut against the inner wall, thereby... The automatic centering and correction of the workpiece is completed, and then the synchronous mover drives the translation column to move upward. With the help of the opposite sliding structure, the two adjacent jaws are brought closer together. At this time, the jaw located inside the workpiece maintains contact with the inner wall, while the jaw located outside the workpiece moves inward to fit the outer wall. Finally, the inner and outer walls of the workpiece are clamped at the same time. This double-sided clamping method of centering first and then clamping not only greatly improves the clamping stability, but also effectively avoids thin-wall deformation caused by single-sided clamping. It is especially suitable for turning of irregular thin-walled rotary parts such as pump housings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is one of the overall structural schematic diagrams of an embodiment of the present invention; Figure 2 This is a second schematic diagram of the overall structure of an embodiment of the present invention; Figure 3 This is a schematic diagram of the turning mechanism according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the rotating shell according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the bottom of the adjustment seat according to an embodiment of the present invention; Figure 6 This is a schematic diagram showing the disassembled structure of the guide ring and lifting ring according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the bottom structure of the guide ring according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the elastic element in an embodiment of the present invention; Figure 9 This is a schematic diagram of the bottom structure of the slider in an embodiment of the present invention; Figure 10 This is a schematic diagram of the gripper structure according to an embodiment of the present invention; Figure 11This is a structural schematic diagram of the first friction ring and friction plate in the assembly state according to an embodiment of the present invention; Figure 12 This is a structural schematic diagram of the assembly state of the fixing ring and the insertion rod according to an embodiment of the present invention; Figure 13 This is a schematic diagram showing the disassembled structure of the insertion rod and fixing sleeve according to an embodiment of the present invention.

[0018] The diagram is marked as follows: 1. Turning table; 2. Collection hopper; 3. Adjusting seat; 4. Rotating shell; 5. Translation column; 6. Gripper; 7. Clearance hole; 8. Lifting seat; 9. Movable column; 10. First rectangular hole; 11. Guide bar; 12. Lifting ring; 13. First electric push rod; 14. Annular groove; 15. Guide ring; 16. First ball bearing; 17. First fixed plate; 18. First slide groove; 19. Slider; 20. Second ball bearing; 21. Mounting bracket; 22. Lead screw; 23. Sliding seat; 24. Second electric push rod; 25. First servo motor; 26. Tool holder; 27. Turning tool; 28. Support sleeve; 29. ​​Rotary shaft; 30. Movable frame; 31. Fixing ring; 32. First friction disc; 33. Insert rod; 34. First friction ring; 35. Friction plate; 36. Third electric push rod; 37. Fixing sleeve; 38. First compression spring; 39. Second servo motor; 40. Prism; 41. Second slide groove; 42. Rotary disk; 43. Second rectangular hole; 44. Support shaft; 45. Second friction disc; 46. Second friction ring; 47. Second fixing plate; 48. Guide post; 49. Second compression spring; 50. Fixing shaft; 51. Third servo motor; 52. Fourth electric push rod; 53. Positioning seat; 54. Insertion hole; 55. Third rectangular hole. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0020] Example 1, by Figure 1 , Figure 2 , Figure 4 and Figure 5 The present invention includes a turning table 1 and an adjusting seat 3 disposed above the turning table 1. A collection hopper 2 is fixedly connected through the turning table 1 and the collection hopper 2 is located below the adjusting seat 3. A flipping unit for driving the adjusting seat 3 to flip is installed on the turning table 1. A rotating shell 4 is provided above the adjusting seat 3. A rotation structure for driving the rotating shell 4 to rotate is provided on the adjusting seat 3. The rotating shell 4 contains several translation columns 5, each with two grippers 6 above it. The top of the inner wall of the rotating shell 4 has several clearance holes 7, with the grippers 6 passing through the corresponding clearance holes 7. An adjusting base 3 is equipped with a synchronous mover for driving the vertical movement of the translation columns 5. The rotating shell 4 is equipped with an adjusting unit for driving the translation columns 5 to move closer together or further apart. The translation columns 5 are equipped with an anti-directional sliding structure for changing the distance between adjacent grippers 6. The turning table 1 is equipped with a turning mechanism for turning. The adjusting unit drives all the translation columns 5 to move further apart, so that each gripper 6 located inside the workpiece synchronously fits against the inner wall of the workpiece and forms a centered position. After centering and positioning, the synchronous mover drives all translation columns 5 to move upwards, and then, through the opposite sliding structure on each translation column 5, drives each pair of grippers 6 to move closer together. At this time, the grippers 6 located inside the workpiece remain in contact with the inner wall of the workpiece, while the grippers 6 located outside the workpiece move towards the outer wall of the workpiece. Finally, each pair of grippers 6 simultaneously clamps the inner and outer walls of the workpiece, achieving centering first and then uniform clamping. According to the specifications of the workpiece, the adjustment unit drives several translation columns 5 to move closer or further apart to adjust the initial positions of the translation columns 5 and grippers 6. Then, the workpiece is placed above the rotating shell 4 by the external loading equipment, with two adjacent grippers 6 located on the outer side of the workpiece. Inside the workpiece, several translation columns 5 are moved away from each other by an adjustment unit. Eventually, several grippers 6 located inside the workpiece abut against the inner wall of the workpiece, centering it above the rotating shell 4. Then, a synchronous mover drives the translation columns 5 upwards. The translation columns 5 reduce the distance between adjacent grippers 6 through an anti-directional sliding structure. Since the grippers 6 inside the workpiece abut against its inner wall, the grippers 6 outside the workpiece move towards it. Finally, adjacent grippers 6 clamp the inner and outer walls of the workpiece respectively, simultaneously fixing them and increasing clamping stability while reducing... The workpiece may be clamped and deformed. Then, the adjusting seat 3 is driven to rotate 90 degrees by the flipping unit, so that the adjusting seat 3 drives the rotating shell 4 and the workpiece to move to the turning station. The rotating shell 4 and the workpiece are driven to rotate by the self-rotating structure. The workpiece is turned by the turning mechanism. The waste material from the turning falls into the collection hopper 2. After the turning is completed, the adjusting seat 3 is driven to rotate 90 degrees again by the flipping unit. The workpiece is located below the rotating shell 4 so that the waste material inside the workpiece falls completely into the collection hopper 2. Then, the adjusting seat 3 is driven to rotate 180 degrees in the opposite direction by the flipping unit, so that the rotating shell 4 can be rotated to the initial position. The next workpiece to be turned can then be replaced on the rotating shell 4.

[0021] Example 2, based on Example 1, is... Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 9 and Figure 10 The proposed anti-directional sliding structure includes a lifting seat 8 fixedly mounted on the top of the translation column 5. Two movable columns 9 are fixedly connected to the opposite sides of two adjacent grippers 6. The lifting seat 8 has four inclined first rectangular holes 10, and the movable columns 9 are slidably installed within the corresponding first rectangular holes 10. A guide bar 11 is provided above the translation column 5, and the guide bar 11 is fixedly connected to the inner wall of the rotating shell 4. The grippers 6 are slidably sleeved on the outside of the corresponding guide bar 11. The turning mechanism includes a mounting frame 21 fixedly mounted on the turning table 1. A sliding seat 23 is slidably mounted on the mounting frame 21. A lead screw 22 is rotatably connected to the mounting frame 21. The sliding seat 23 is sleeved on the outside of the lead screw 22, and the connection between the sliding seat 23 and the lead screw 22 is a threaded connection. A first servo motor 25 is fixedly connected to the mounting frame 21, and the output end of the first servo motor 25 is fixedly connected to the lead screw 22. A second electric push rod 24 is fixedly connected to the sliding seat 23, and a tool holder 2 is fixedly connected to the telescopic end of the second electric push rod 24. 6. Turning tools 27 are fixedly connected to both sides of the tool holder 26. The synchronous mover includes a lifting ring 12 disposed between the adjusting seat 3 and the rotating shell 4. Several first electric push rods 13 are fixedly connected to the adjusting seat 3, and the telescopic ends of the first electric push rods 13 are fixedly connected to the lifting ring 12. An annular groove 14 is opened on the top of the lifting ring 12. A guide ring 15 is rotatably connected in the annular groove 14. Several first fixing plates 17 are fixedly connected to the top of the guide ring 15. A first fixing plate 17 is opened on the top of the first fixing plate 17. The first slide groove 18 has a slider 19 slidably mounted inside it. The bottom of the inner wall of the rotating shell 4 has several third rectangular holes 55. The translation column 5 passes through the corresponding third rectangular holes 55, and the bottom end of the translation column 5 is fixedly connected to the corresponding slider 19. The bottom end of the guide ring 15 is rotatably connected to several first balls 16, and the first balls 16 are in contact with the inner wall of the annular groove 14. The bottom end of the slider 19 is rotatably connected to several second balls 20, and the second balls 20 are in contact with the inner wall of the first slide groove 18. By adjusting the unit to drive several translation columns 5 to move away from each other, the translation columns 5 drive the slider 19 to slide within the first slide groove 18. The translation columns 5 drive the grippers 6 to slide relative to the guide bar 11 via the lifting seat 8 and the movable column 9, thereby adjusting the initial position of the grippers 6. The workpiece to be processed is placed above the rotating shell 4 by an external feeding device, with two adjacent grippers 6 located outside and inside the workpiece, respectively. When several grippers 6 located inside the workpiece abut against the inner wall of the workpiece, the workpiece is centered and corrected for rotation. When the shell 4 is above, the first electric push rod 13 drives the lifting ring 12 to move upward. The lifting ring 12 drives the slider 19 and the translation column 5 to move upward through the guide ring 15 and the first fixed plate 17. The translation column 5 drives the lifting seat 8 to move upward. Since several grippers 6 located inside the workpiece are in contact with the inner wall of the workpiece, the grippers 6 located inside the workpiece remain stationary. As the lifting seat 8 continues to move upward, the movable column 9 slides in the first rectangular hole 10, and the lifting seat 8 moves toward the center of the rotating shell 4. The lifting seat 8 moves upward through the movable column 9. The moving column 9 drives the gripper 6 located outside the workpiece to move towards the workpiece. Ultimately, two adjacent grippers 6 clamp the inner and outer walls of the workpiece. When the rotating shell 4 rotates relative to the adjusting seat 3, the rotating shell 4 drives the slider 19, the first fixed plate 17, and the guide ring 15 to rotate relative to the lifting ring 12 via the translation column 5. The design of the first ball bearing 16 reduces the resistance encountered by the guide ring 15 when rotating relative to the annular groove 14, and the design of the second ball bearing 20 reduces the resistance encountered by the slider 19 when moving relative to the first sliding groove 18. When the rotating shell 4 and the workpiece rotate to the turning station, and the workpiece is located on one side of the turning tool 27, the tool holder 26 is driven to move by the second electric push rod 24, so that the turning tool 27 moves to the inside or outside of the workpiece. Then, a corresponding turning tool 27 comes into contact with the workpiece, and the first servo motor 25 drives the lead screw 22 to rotate. The lead screw 22 drives the sliding seat 23 and the turning tool 27 to translate relative to the mounting bracket 21. As the rotating shell 4 and the workpiece rotate, the turning tool 27 can turn the workpiece.

[0022] Example 3, based on Example 1, is... Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 8 , Figure 11 , Figure 12 and Figure 13The rotating structure includes a support sleeve 28 fixedly installed at the bottom of the rotating shell 4. The bottom end of the support sleeve 28 is rotatably connected to the adjusting seat 3. A rotating shaft 29 is provided inside the support sleeve 28, and the rotating shaft 29 passes through the adjusting seat 3. A fixing ring 31 is slidably sleeved on the outside of the rotating shaft 29. The fixing ring 31 is fixedly connected to the inner wall of the support sleeve 28. A plug-in component adapted to the fixing ring 31 is installed on the rotating shaft 29. A movable frame 30 is rotatably sleeved on the outside of the rotating shaft 29. Several third electric push rods 36 are fixedly connected to the adjusting seat 3, and the telescopic ends of the third electric push rods 36 are fixedly connected to the movable frame 30. A second sliding groove 41 is opened at the bottom of the rotating shaft 29. A prism 40 is slidably arranged in the second sliding groove 41. A second servo motor 39 is fixedly connected to the adjusting seat 3. The output end of the servo motor 39 is fixedly connected to the bottom end of the prism 40. A first friction ring 34 is fixedly fitted on the outside of the support sleeve 28. Several friction plates 35 are provided above the first friction ring 34. The movable frame 30 passes through the adjustment seat 3, and the friction plates 35 and the movable frame 30 are fixedly connected. The plug-in component includes a first friction disk 32 fixedly installed on the top of the rotating shaft 29. Several plug rods 33 are provided below the first friction disk 32. Several insertion holes 54 adapted to the plug rods 33 are opened on the fixed ring 31. A fixed sleeve 37 is fitted on the outside of the plug rods 33. The top end of the fixed sleeve 37 is fixedly connected to the bottom of the first friction disk 32. A first compression spring 38 is provided inside the fixed sleeve 37, and the two ends of the first compression spring 38 are respectively fixed to the first friction disk 32 and the plug rods 33. The fixed connection and adjustment unit includes a rotating disk 42 rotatably mounted inside a rotating shell 4. The rotating disk 42 has several second rectangular holes 43, and a translation column 5 is slidably mounted within a corresponding second rectangular hole 43. A support shaft 44 is rotatably connected inside the rotating shell 4, passing through the rotating disk 42. A second friction disk 45 located inside a support sleeve 28 is fixedly connected to the bottom end of the support shaft 44. The top of the first friction disk 32 and the bottom of the second friction disk 45 are in contact. A second friction ring 46 is sleeved on the outside of the support shaft 44, with the bottom of the second friction ring 46 in contact with the top of the rotating disk 42. An elastic element adapted to the second friction ring 46 is mounted on the support shaft 44. The elastic element includes a second fixing plate 47 fixedly sleeved on the outside of the support shaft 44. A number of guide posts 48 are passed through the second fixed plate 47. The bottom end of the guide post 48 is fixedly connected to the top of the second friction ring 46. A second compression spring 49 is sleeved on the outside of the guide post 48. The two ends of the second compression spring 49 are fixedly connected to the top of the second friction ring 46 and the bottom of the second fixed plate 47, respectively. The flipping unit includes fixed shafts 50 fixedly installed on both sides of the adjustment seat 3. The fixed shafts 50 are rotatably connected to the turning table 1. A third servo motor 51 is fixedly connected on the turning table 1. The output end of the third servo motor 51 is fixedly connected to a corresponding fixed shaft 50. Two fourth electric push rods 52 are fixedly connected on the turning table 1. The telescopic end of the fourth electric push rod 52 is fixedly connected to a positioning seat 53 for pressing the adjustment seat 3. The movable frame 30 is driven to move upward by the third electric push rod 36. The movable frame 30 drives the rotating shaft 29 to slide relative to the prism 40, and the rotating shaft 29 drives the first friction disk 32 and the second friction disk 45 to contact each other. The second servo motor 39 drives the prism 40 to rotate, and the prism 40 drives the first friction disk 32 to rotate through the rotating shaft 29. The first friction disk 32 drives the second friction disk 45 and the support shaft 44 to rotate through friction. The second compression spring 49 is in a compressed state and applies pressure to the second friction ring 46 so that the second friction ring 46 and the rotating disk 42 are in close contact. When the support shaft 44 rotates, the support shaft 44 drives the second friction ring 46 to rotate through the second fixed plate 47 and the guide post 48. At this time, the second friction ring 46 is... The rotating disk 42 can be driven to rotate by friction. The rotating disk 42 drives the translation column 5 to slide within the second rectangular hole 43, allowing several translation columns 5 to move closer or further apart. When several grippers 6 located inside the workpiece abut against the inner wall of the workpiece, the second friction ring 46 rotates relative to the rotating disk 42 as the support shaft 44 continues to rotate. The rotating disk 42 remains stationary, and the grippers 6 located inside the workpiece automatically stop after moving to a preset position. When it is necessary to drive the rotating shell 4 to rotate relative to the adjusting seat 3, the movable frame 30 is driven to move downward by the third electric push rod 36. The movable frame 30 drives the first friction disk 32 to move downward via the rotating shaft 29, so that the first friction disk 32 is no longer in contact with the second friction disk 45, and the insertion rod 33... The bottom of the first friction plate 32 contacts the top of the fixed ring 31. As the first friction plate 32 and the fixed sleeve 37 continue to move downward, the fixed sleeve 37 moves downward relative to the insertion rod 33, and the first compression spring 38 is in a compressed state. When the movable frame 30 drives the bottom of the friction plate 35 to press the top of the fixed ring 31, the first friction ring 34, the support sleeve 28 and the fixed ring 31 are fixed relative to the friction plate 35. At this time, the second servo motor 39 drives the prism 40 to rotate. The prism 40 drives the first friction plate 32 and the insertion rod 33 to rotate relative to the fixed ring 31 through the rotating shaft 29. When the insertion rod 33 rotates to the top of the insertion hole 54, the first compression spring 38 drives the insertion rod 33 to move downward so that the bottom end of the insertion rod 33 is inserted into the insertion hole 54. As the rotating shaft 29 continues to rotate, the rotating shaft 29 drives the first friction plate 32 and the insertion rod 33 to rotate relative to the fixed ring 31. The fixed sleeve 37 and the insert rod 33 drive the fixed ring 31 and the support sleeve 28 to rotate relative to the adjusting seat 3. The support sleeve 28 drives the first friction ring 34 to rotate relative to the friction plate 35. Then, the third electric push rod 36 drives the movable frame 30 to move upward so that the friction plate 35 no longer presses against the top of the first friction ring 34. At the same time, the length of the bottom end of the insert rod 33 within the insertion hole 54 is still within the preset range. When the second servo motor 39 drives the prism 40 to rotate, the prism 40 can drive the support sleeve 28 and the rotating shell 4 to rotate via the insert rod 33 and the fixed ring 31. The third servo motor 51 drives the fixed shaft 50 and the adjusting seat 3 to rotate relative to the turning table 1, so that the rotating shell 4 can be flipped to different positions. When the rotating shell 4 drives the workpiece to be processed to rotate to the turning station,The positioning seat 53 is moved by the fourth electric push rod 52, so that the positioning seat 53 presses against the adjusting seat 3, reducing the possibility of rotational wobbling of the adjusting seat 3 and the fixed shaft 50 relative to the turning table 1.

[0023] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

Claims

1. A turning device for machining pump casing, comprising a turning table (1) and an adjusting seat (3) disposed above the turning table (1), characterized in that, The turning table (1) has a fixedly connected collection hopper (2) running through it, and the collection hopper (2) is located below the adjusting seat (3). The turning table (1) is equipped with a flipping unit for driving the adjusting seat (3) to flip. A rotating shell (4) is provided above the adjusting seat (3), and a self-rotating structure is provided on the adjusting seat (3) for driving the rotating shell (4) to rotate. The rotating shell (4) is provided with several translation columns (5), and each translation column (5) is provided with two grippers (6) above it. The top of the inner wall of the rotating shell (4) is provided with several clearance holes (7), and the grippers (6) pass through the corresponding clearance holes (7). The adjusting seat (3) is equipped with a synchronous mover for driving several translation columns (5) to move vertically. The rotating shell (4) is equipped with an adjusting unit for driving several translation columns (5) to move closer or further apart. The translation columns (5) are equipped with an anti-directional sliding structure for changing the distance between two adjacent grippers (6). The turning table (1) is equipped with a turning mechanism. The turning mechanism, wherein the adjusting unit drives all translation columns (5) to move away from each other, so that each jaw (6) located inside the workpiece synchronously fits against the inner wall of the workpiece and forms a centered position. After the centered position is completed, the synchronous mover drives all translation columns (5) to move upward, and then drives each pair of jaws (6) to move closer through the opposite sliding structure on each translation column (5). At this time, the jaws (6) located inside the workpiece keep in contact with the inner wall of the workpiece, and the jaws (6) located outside the workpiece move towards the outer wall of the workpiece, so that each pair of jaws (6) clamps the inner wall and outer wall of the workpiece at the same time, achieving centering first and then uniform clamping. The self-rotating structure includes a support sleeve (28) fixedly installed at the bottom of the rotating shell (4). The bottom end of the support sleeve (28) is rotatably connected to the adjusting seat (3). A rotating shaft (29) is provided inside the support sleeve (28). The rotating shaft (29) passes through the adjusting seat (3). A fixing ring (31) is slidably sleeved on the outside of the rotating shaft (29). The fixing ring (31) is fixedly connected to the inner wall of the support sleeve (28). A plug-in component adapted to the fixing ring (31) is installed on the rotating shaft (29). A movable frame (30) is rotatably sleeved on the outside of the rotating shaft (29). Several third electric push rods (36) are fixedly connected to the adjusting seat (3). The telescopic end of the electric push rod (36) is fixedly connected to the movable frame (30). The bottom of the rotating shaft (29) is provided with a second slide groove (41). A prism (40) is slidably provided in the second slide groove (41). A second servo motor (39) is fixedly connected to the adjusting seat (3). The output end of the second servo motor (39) is fixedly connected to the bottom end of the prism (40). A first friction ring (34) is fixedly sleeved on the outside of the support sleeve (28). Several friction plates (35) are provided above the first friction ring (34). The movable frame (30) passes through the adjusting seat (3). The friction plates (35) and the movable frame (30) are fixedly connected.

2. The turning device for pump casing machining according to claim 1, characterized in that, The opposite sliding structure includes a lifting seat (8) fixedly installed on the top of the translation column (5), and two movable columns (9) fixedly connected to the side of the two adjacent grippers (6) that are far apart. The lifting seat (8) has four inclined first rectangular holes (10), and the movable columns (9) are slidably installed in the corresponding first rectangular holes (10). A guide strip (11) is provided above the translation column (5). The guide strip (11) is fixedly connected to the inner wall of the rotating shell (4), and the grippers (6) are slidably sleeved on the outside of the corresponding guide strip (11).

3. The turning device for pump casing machining according to claim 1, characterized in that, The turning mechanism includes a mounting frame (21) fixedly mounted on the turning table (1), a sliding seat (23) slidably mounted on the mounting frame (21), a lead screw (22) rotatably connected to the mounting frame (21), the sliding seat (23) sleeved on the outside of the lead screw (22), and the connection between the sliding seat (23) and the lead screw (22) is a threaded connection. A first servo motor (25) is fixedly connected to the mounting frame (21), and the output end of the first servo motor (25) is fixedly connected to the lead screw (22). A second electric push rod (24) is fixedly connected to the sliding seat (23), and a tool holder (26) is fixedly connected to the telescopic end of the second electric push rod (24). Turning tools (27) are fixedly connected to both sides of the tool holder (26).

4. The turning device for pump casing machining according to claim 1, characterized in that, The synchronous mover includes a lifting ring (12) disposed between the adjusting seat (3) and the rotating shell (4). Several first electric push rods (13) are fixedly connected to the adjusting seat (3), and the telescopic ends of the first electric push rods (13) are fixedly connected to the lifting ring (12). An annular groove (14) is provided on the top of the lifting ring (12). A guide ring (15) is rotatably connected in the annular groove (14). Several first fixing plates (17) are fixedly connected to the top of the guide ring (15). A first sliding groove (18) is provided on the top of the first fixing plate (17). A slider (19) is slidably disposed in the first sliding groove (18). Several third rectangular holes (55) are provided at the bottom of the inner wall of the rotating shell (4). A translation column (5) passes through the corresponding third rectangular hole (55), and the bottom end of the translation column (5) is fixedly connected to the corresponding slider (19).

5. The turning device for pump casing machining according to claim 4, characterized in that, The bottom end of the guide ring (15) is rotatably connected to a plurality of first balls (16), and the first balls (16) are in contact with the inner wall of the annular groove (14). The bottom end of the slider (19) is rotatably connected to a plurality of second balls (20), and the second balls (20) are in contact with the inner wall of the first groove (18).

6. The turning device for pump casing machining according to claim 1, characterized in that, The connector includes a first friction disc (32) fixedly installed on the top of the rotating shaft (29). Several insertion rods (33) are provided below the first friction disc (32). Several insertion holes (54) adapted to the insertion rods (33) are opened on the fixing ring (31). A fixing sleeve (37) is sleeved on the outside of the insertion rod (33). The top of the fixing sleeve (37) is fixedly connected to the bottom of the first friction disc (32). A first compression spring (38) is provided inside the fixing sleeve (37), and the two ends of the first compression spring (38) are fixedly connected to the first friction disc (32) and the insertion rod (33) respectively.

7. The turning device for pump casing machining according to claim 6, characterized in that, The adjustment unit includes a rotating disk (42) rotatably installed inside a rotating shell (4). The rotating disk (42) has several second rectangular holes (43) and a translation column (5) is slidably installed in the corresponding second rectangular holes (43). A support shaft (44) is rotatably connected inside the rotating shell (4). The support shaft (44) passes through the rotating disk (42). The bottom end of the support shaft (44) is fixedly connected to a second friction disk (45) located inside a support sleeve (28). The top of the first friction disk (32) and the bottom of the second friction disk (45) are in contact. A second friction ring (46) is sleeved on the outside of the support shaft (44). The bottom of the second friction ring (46) is in contact with the top of the rotating disk (42). An elastic element adapted to the second friction ring (46) is installed on the support shaft (44).

8. The turning apparatus for pump casing machining according to claim 7, characterized in that, The elastic element includes a second fixing plate (47) fixedly sleeved on the outside of the support shaft (44). A plurality of guide posts (48) are passed through the second fixing plate (47). The bottom end of the guide post (48) is fixedly connected to the top of the second friction ring (46). A second compression spring (49) is sleeved on the outside of the guide post (48), and the two ends of the second compression spring (49) are fixedly connected to the top of the second friction ring (46) and the bottom of the second fixing plate (47) respectively.

9. The turning device for pump casing machining according to claim 1, characterized in that, The flipping unit includes fixed shafts (50) respectively fixedly installed on both sides of the adjustment seat (3). The fixed shafts (50) are rotatably connected to the turning table (1). A third servo motor (51) is fixedly connected on the turning table (1), and the output end of the third servo motor (51) is fixedly connected to a corresponding fixed shaft (50). Two fourth electric push rods (52) are fixedly connected on the turning table (1). The telescopic end of the fourth electric push rod (52) is fixedly connected to a positioning seat (53) for pressing the adjustment seat (3).

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