Composite milling machine special for bell housing

Abstract

The invention relates to a special composite milling machine for a bell housing, which comprises a rack, and further comprises a clamping mechanism for clamping a workpiece, a turning mechanism for turning a spherical surface and a milling mechanism for milling a ball channel, the milling mechanism comprises a plurality of cutter mounting seats used for assembling milling cutters, a plurality of arc-shaped gears, a plurality of hinge seats, an end face gear, an angle adjusting assembly and a position adjusting assembly, and the angle adjusting assembly is used for adjusting shaft angles between the arc-shaped gears and the end face gear at the same time; the position adjusting assembly is used for adjusting the distance between the arc-shaped gears at the same time. The equipment integrates the clamping mechanism, the turning mechanism and the milling mechanism, combined machining of the spherical surface and the ball channel of the bell housing is achieved, the equipment does not need to be replaced many times, the workpiece clamping frequency is reduced, and the machining efficiency and the overall precision are improved. In the milling mechanism, an end face gear drives a plurality of arc-shaped gears, synchronous work of a plurality of milling cutters is achieved, a plurality of ball channels are machined at a time, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of bell-shaped housing manufacturing, in particular to a special compound milling machine for bell-shaped housings. Background Art

[0002] Reference Figure 10 The bell housing 8 is a component of the constant velocity universal joint. The bell housing 8 is usually a hollow shell with an open end. Its appearance is similar to a bell. Its interior has a special spherical surface 46 structure and multiple ball grooves 47. The multiple ball grooves 47 are distributed in a ring array based on the central axis of the bell housing 8.

[0003] In the prior art, the internal spherical structure is often turned into shape by a lathe, and then the ball grooves are milled into shape one by one by a milling machine; however, this method is undoubtedly inefficient, and the bell-shaped shell is processed and formed by a lathe and a milling machine respectively, which is also prone to problems such as poor positional relationship between the spherical surface and the ball groove and low coaxiality. Summary of the Invention

[0004] In order to facilitate the processing and manufacturing of the bell-shaped housing, the present application provides a special compound milling machine for the bell-shaped housing.

[0005] The present application provides a bell-shaped housing special compound milling machine adopts the following technical solution: 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod is pivotally connected to said linking rod.

[0006] By adopting the above technical solution, the equipment integrates a clamping mechanism, a turning mechanism, and a milling mechanism to achieve the composite processing of the spherical surface and ball groove of the bell shell, eliminating the need for multiple equipment changes, reducing the number of workpiece clamping times, and improving processing efficiency and overall precision. In the milling mechanism, the end face gear drives multiple arc gears, allowing multiple milling cutters to work synchronously and process multiple ball grooves at a time, greatly improving processing efficiency; the angle adjustment component can simultaneously adjust the shaft angle between several arc gears and the end face gear to simultaneously meet the arc processing requirements of multiple ball grooves and increase the arc consistency between multiple ball grooves, facilitating the processing and manufacturing of the bell shell; the position adjustment component is used to simultaneously adjust the spacing between several arc gears to adapt to the ball groove parameters of bell shells of different specifications.

[0007] Preferably, the position adjustment assembly includes a plurality of sliding seats and a first driving member, the plurality of sliding seats correspond to a plurality of articulated seats respectively, the plurality of sliding seats are respectively slidably connected to the tool workbench along the axial direction perpendicular to the end face gear, the plurality of articulated seats are respectively articulatedly connected to the corresponding sliding seats, and the first driving member is used to simultaneously drive the sliding of multiple sliding seats.

[0008] By adopting the above technical solution, the articulated seat moves with the sliding seat, driving the tool mounting seat to change its position synchronously, thereby adjusting the distance between the milling cutters.

[0009] Preferably, the first driving member includes a first planar threaded disk, a first gear and a first motor, the first planar threaded disk is rotatably connected to the tool workbench, several of the sliding seats are respectively threadedly connected to the first planar threaded disk, the first planar threaded disk is coaxial and fixedly connected to the first ring gear, the first gear is rotatably connected to the tool workbench, the first gear is meshed with the first ring gear, and the first motor is used to drive the rotation of the first gear.

[0010] With this technical solution, the first motor drives the first gear to rotate, which, through meshing, drives the first ring gear and the coaxial first flat threaded disk to rotate. The threads of the first flat threaded disk mate with the threads of the sliding seat, converting the rotational motion into linear sliding motion of the sliding seat, ultimately moving the milling cutters and adjusting the spacing between the cutters.

[0011] Preferably, the angle adjustment assembly includes a plurality of sliding blocks, a plurality of articulated rods and a second driving member, the plurality of articulated seats correspond to the plurality of sliding blocks and the plurality of articulated rods respectively, the plurality of sliding blocks are slidably connected to the corresponding articulated seats respectively, the two ends of the plurality of articulated rods are articulatedly connected to the corresponding sliding blocks and the corresponding articulated seats respectively, and the second driving member is used to drive the sliding of the plurality of sliding blocks at the same time.

[0012] By adopting the above technical solution, in the angle adjustment assembly, the second driving member drives the sliding block to slide in a specific direction on the hinge seat, and the sliding block pulls or pushes the tool mounting seat through the hinge rod, causing the tool mounting seat to rotate around the hinge point of the hinge seat, thereby changing the axial angle between the arc gear and the end face gear.

[0013] Preferably, the second driving member includes a second planar threaded disk, a second gear and a second motor, the second planar threaded disk is rotatably connected to the tool workbench, several of the sliding blocks are respectively threadedly connected to the second planar threaded disk, the second planar threaded disk is coaxially and fixedly connected with a second ring gear, the second gear is rotatably connected to the tool workbench, the second gear is meshed with the second ring gear, and the second motor is used to drive the rotation of the second gear.

[0014] By adopting the above technical solution, the second motor drives the second gear to rotate, and drives the second gear ring and the second planar threaded disk to rotate through engagement. The threads of the planar threaded disk cooperate with the sliding block to convert the rotational motion into linear sliding of the sliding block. The sliding block pulls or pushes the tool mounting seat through the hinge rod, causing the tool mounting seat to rotate around the hinge point of the hinge seat, thereby changing the axial angle between the arc gear and the end gear.

[0015] Preferably, the clamping mechanism includes a three-jaw chuck and a spindle box, the frame is rotatably connected to a fixture workbench, the spindle box is movably connected to the fixture workbench, and the three-jaw chuck is rotatably connected to the spindle box.

[0016] By adopting this technical solution, the three-jaw chuck can quickly and securely clamp bell housings of varying diameters, achieving high clamping efficiency. The movable headstock adjusts the relative position of the workpiece and tool to accommodate bell housings of varying lengths. The fixture table rotates in conjunction with the headstock's movement, allowing the workpiece to be positioned in various directions, meeting the multi-directional machining requirements of turning and milling, and enhancing the equipment's flexibility.

[0017] Preferably, an annular guide rail is provided on the frame, a sliding support block is provided at the bottom of the fixture workbench, the sliding support block slides along the annular guide rail, and a rotary servo motor is fixedly mounted on the frame, the rotary servo motor is used to drive the fixture workbench to rotate around the central axis of the annular guide rail.

[0018] By adopting this technical solution, the annular guide rail and sliding support block provide stable guidance for the rotation of the fixture table, preventing wobbling during rotation and ensuring smooth rotation of the workpiece. This solution is particularly suitable for the continuous rotation required for turning the spherical surface of a bell shell. The rotary servo motor precisely controls the rotation angle and speed of the fixture table, coordinating with the turning and milling mechanisms to achieve automated machining of the spherical surface and ball grooves, improving processing accuracy and automation.

[0019] Preferably, the turning mechanism includes a tool holder and several bolts, the tool holder is fixedly connected to the tool workbench, the tool holder is provided with a tool placement groove for installing the turning tool, several of the bolts are respectively threadedly connected to the tool holder, and one end of several of the bolts are respectively passed through the tool placement groove.

[0020] By adopting the above technical solution, the turning tool can be removed by loosening the bolt, without the need for complex tools, shortening the tool change time, and being suitable for tool wear replacement in mass production. The threaded connection of the bolt provides sufficient clamping force to ensure that the turning tool is subjected to stable force during the cutting process, reducing vibration and chatter marks, and improving the quality of the processed surface.

[0021] The technical effects of the present invention are mainly reflected in the following aspects: 1. The present invention sets a milling mechanism, and the end gear drives multiple arc gears, which can realize the synchronous operation of multiple milling cutters and process multiple ball grooves at a time, greatly improving the processing efficiency; 2. The present invention provides an angle adjustment component to simultaneously adjust the shaft angles between multiple arc gears and end gears, thereby simultaneously meeting the arc processing requirements of multiple ball grooves and increasing the arc consistency between multiple ball grooves, thereby facilitating the processing and manufacturing of the bell housing; 3. The present invention can adapt to the ball channel parameters of bell-shaped housings of different specifications by providing a position adjustment component. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0023] Figure 2 It is a schematic diagram of the rack structure of an embodiment of the present application.

[0024] Figure 3 It is along Figure 2 Enlarged view of point A in the middle.

[0025] Figure 4 It is a schematic diagram of the milling mechanism structure of an embodiment of the present application.

[0026] Figure 5 It is a schematic diagram of the structure of the angle adjustment component of an embodiment of the present application.

[0027] Figure 6 It is a schematic diagram of the structure of the position adjustment component of an embodiment of the present application.

[0028] Figure 7 This is a schematic diagram of the end face gear structure of an embodiment of the present application.

[0029] Figure 8 This is a schematic diagram of the structure after angle adjustment of an embodiment of the present application.

[0030] Figure 9It is a schematic diagram of the sliding seat structure of an embodiment of the present application.

[0031] Figure 10 This is a schematic diagram of the bell-shaped housing structure of an embodiment of the present application.

[0032] Explanation of reference numerals: 1, frame; 2, clamping mechanism; 3, turning mechanism; 4, milling mechanism; 5, tool table; 6, slide plate; 7, drive motor; 8, bell housing; 10, Y-axis guide rail; 11, Y-axis servo motor; 12, X-axis guide rail; 16, X Axis servo motor; 17. Fixture workbench; 18. Annular guide rail; 19. Sliding support block; 21. Three-jaw chuck; 22. Spindle box; 23. Rotating motor; 24. Tool holder; 25. Arc gear; 26. Articulated seat; 27. End gear; 28. Angle adjustment assembly; 29. ​​Position adjustment assembly; 30. Sliding seat; 31. First driving member; 32. First plane threaded disk; 33. First gear; 34. First motor; 35. First ring gear; 36. Sliding block; 37. Articulated rod; 38. Second driving member; 39. Second plane threaded disk; 40. Second gear; 41. Second motor; 42. Second ring gear; 43. Tool holder; 44. Bolt; 45. Tool groove; 46. Spherical surface; 47. Ball groove. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-10 The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.

[0034] The embodiment of the present application discloses a special compound milling machine for bell-shaped housings.

[0035] Reference Figure 1 and Figure 2 The present embodiment is a special compound milling machine for bell-shaped shells, comprising a frame 1, a clamping mechanism 2 for clamping a workpiece, a turning mechanism 3 for turning a spherical surface 46, and a milling mechanism 4 for milling a ball groove 47. A tool table 5 and a slide 6 are movably connected to the frame 1. A Y-axis guide rail is fixedly connected to the frame 1, and a Y-axis slider that slidably cooperates with the Y-axis guide rail is fixedly connected to the bottom of the slide 6. The slide 6 is moved along the Y-axis guide rail by a Y-axis drive device; the Y-axis drive device includes a Y-axis lead screw and a Y-axis servo motor. The Y-axis lead screw is rotatably connected to the frame 1 and threadably cooperates with the nut seat at the bottom of the slide 6. The Y-axis servo motor is used to drive the rotation of the Y-axis lead screw.

[0036] Reference Figure 1 and Figure 2The slide plate 6 is fixedly connected to an axis guide rail, the bottom of the tool worktable 5 is fixedly connected to an X-axis slider that slides with the X-axis guide rail, and the tool worktable 5 moves along the X-axis guide rail through the X-axis drive device; the X-axis drive device includes an X-axis screw and an X-axis servo motor, the X-axis screw is rotatably connected to the slide plate 6 and is threadedly matched with the nut seat at the bottom of the tool worktable 5, and the X-axis servo motor is used to drive the X-axis screw to rotate.

[0037] Reference Figure 1 and Figure 2 A fixture workbench 17 is rotatably connected to the frame 1, a circular guide rail 18 is fixedly connected to the frame 1, a sliding support block 19 is fixedly connected to the bottom of the fixture workbench 17, the sliding support block 19 slides along the circular guide rail 18, and a rotary servo motor is fixedly installed on the frame 1, and the rotary servo motor is used to drive the fixture workbench 17 to rotate around the central axis of the circular guide rail 18.

[0038] Reference Figure 1 and Figure 2 The clamping mechanism 2 includes a three-jaw chuck 21 and a spindle box 22. The spindle box 22 is movably connected to the fixture table 17, and the three-jaw chuck 21 is rotatably connected to the spindle box 22. A rotary motor 23 is installed on the fixture table 17, and the rotary motor 23 is used to drive the three-jaw chuck 21 to rotate. The three-jaw chuck 21 can quickly and firmly clamp bell-shaped shells 8 of different diameters, and the clamping efficiency is high; the spindle box 22 is movable and can adjust the relative position of the workpiece and the tool to adapt to the processing of bell-shaped shells 8 of different lengths. The rotation of the fixture table 17 and the movement of the spindle box 22 can realize the position adjustment of the workpiece in different directions, meet the multi-directional processing requirements during turning and milling, and improve the flexibility of the equipment.

[0039] Reference Figure 1 and Figure 2 Annular guide rails 18 and sliding support blocks 19 provide stable guidance for the rotation of fixture table 17, preventing shaking during rotation and ensuring smooth rotation of the workpiece. This is particularly suitable for the continuous rotation required when turning the spherical surface 46 of bell housing 8. A rotary servo motor precisely controls the rotation angle and speed of fixture table 17. Y-axis and X-axis servo motors precisely control the movement distance and speed of tool table 5. These motors, in conjunction with turning mechanism 3 and milling mechanism 4, enable automated machining of spherical surface 46 and ball groove 47, improving machining accuracy and automation.

[0040] Reference Figure 4 and Figure 5The milling mechanism 4 includes three tool mounting seats 24 for assembling milling cutters, three arc gears 25, three hinged seats 26, end face gears 27, angle adjustment components 28 and position adjustment components 29. The end face gear 27 is connected to the tool table 5 along the Y-axis direction. The tool table 5 is fixedly connected with a drive motor 7. The drive motor 7 is used to drive the rotation of the end face gear 27. The three hinged seats 26 correspond to the three arc gears 25 and the three tool mounting seats 24 respectively. The three hinged seats 26 are movably connected to the tool table 5. On the upper part, the three articulated seats 26 are evenly distributed around the central axis of the end face gear 27, the three tool mounting seats 24 are coaxially and rotatably connected to the corresponding articulated seats 26, the three arc gears 25 are coaxially and fixedly connected to the corresponding tool mounting seats 24, and the three arc gears 25 are always in meshing connection with the end face gear 27, the angle adjustment component 28 is used to simultaneously adjust the shaft angle between several arc gears 25 and the end face gear 27, and the position adjustment component 29 is used to simultaneously adjust the spacing between several arc gears 25.

[0041] Reference Figure 1 and Figure 2 The equipment integrates a clamping mechanism 2, a turning mechanism 3, and a milling mechanism 4 to achieve composite processing of the spherical surface 46 and the ball groove 47 of the bell housing 8. This eliminates the need for frequent equipment changes, reduces the number of workpiece clamping times, and improves processing efficiency and overall precision. In the milling mechanism 4, the end face gear 27 drives multiple arc gears 25, enabling multiple milling cutters to work synchronously and process multiple ball grooves 47 at a time, significantly improving processing efficiency. The angle adjustment component 28 can simultaneously adjust the shaft angle between multiple arc gears 25 and the end face gear 27 to simultaneously meet the curvature processing requirements of multiple ball grooves 47 and increase the curvature consistency between multiple ball grooves 47, facilitating the processing and manufacturing of the bell housing 8. The position adjustment component 29 is used to simultaneously adjust the spacing between multiple arc gears 25 to adapt to the parameters of the ball grooves 47 of bell housings 8 of different specifications.

[0042] Reference Figure 5 、 Figure 6 and Figure 9The position adjustment assembly 29 includes three sliding seats 30 and a first driving member 31. The three sliding seats 30 correspond to three articulated seats 26 respectively. The three sliding seats 30 are respectively slidably connected to the tool workbench 5 along the axial direction perpendicular to the end face gear 27. The three sliding seats 30 are distributed in a circular array with the central axis of the end face gear 27 as the reference. The three articulated seats 26 are respectively articulatedly connected to the corresponding sliding seats 30 along the sliding direction perpendicular to the corresponding sliding seats 30. The first driving member 31 is used to simultaneously drive the sliding of the three sliding seats 30. The first driving member 31 includes a first planar threaded disk 32, a first gear 33 and a first motor 34. The first planar threaded disk 32 is rotatably connected to the tool worktable 5 along the Y-axis direction. The three sliding seats 30 are respectively threadedly connected to the first planar threaded disk 32. The first planar threaded disk 32 is coaxial and fixedly connected with the first ring gear 35. The first gear 33 is rotatably connected to the tool worktable 5. The first gear 33 is meshed with the first ring gear 35. The first motor 34 is used to drive the rotation of the first gear 33.

[0043] Reference Figure 5 and Figure 6 The first motor 34 rotates the first gear 33, which, through gear meshing, drives the first ring gear 35 and the coaxial first flat threaded disk 32 to rotate. The threads of the first flat threaded disk 32 mate with the threads of the sliding seat 30, converting the rotational motion into linear sliding motion of the sliding seat 30, ultimately moving the milling cutters and adjusting the spacing between the cutters.

[0044] Reference Figure 5 、 Figure 7 and Figure 8 The angle adjustment assembly 28 includes three sliding blocks 36, three hinged rods 37 and a second driving member 38. The three hinged seats 26 correspond to the three sliding blocks 36 and the three hinged rods 37 respectively. The three sliding blocks 36 are respectively slidably connected to the corresponding sliding seats 30 along the sliding direction of the corresponding sliding seats 30. The two ends of the three hinged rods 37 are respectively hingedly connected to the corresponding sliding blocks 36 and the corresponding hinged seats 26. The second driving member 38 is used to simultaneously drive the sliding of the three sliding blocks 36. The second driving member 38 includes a second planar threaded disk 39, a second gear 40 and a second motor 41. The second planar threaded disk 39 is rotatably connected to the tool worktable 5 along the Y-axis direction. The second planar threaded disk 39 is coaxial with the first planar threaded disk 32 and is arranged opposite to each other. The three sliding blocks 36 are respectively threadedly connected to the second planar threaded disk 39. A second ring gear 42 is coaxially and fixedly connected to the second planar threaded disk 39. The second gear 40 is rotatably connected to the tool worktable 5. The second gear 40 is meshed with the second ring gear 42. The second motor 41 is used to drive the rotation of the second gear 40.

[0045] Reference Figure 7 and Figure 8In the angle adjustment assembly 28, the second motor 41 drives the second gear 40 to rotate, and drives the second gear ring 42 and the second planar threaded disk 39 to rotate through engagement. The threads of the second planar threaded disk 39 cooperate with the sliding block 36 to convert the rotational motion into a linear sliding of the sliding block 36. The sliding block 36 pulls or pushes the tool mounting seat 24 through the hinge rod 37, causing the tool mounting seat 24 to rotate around the hinge point of the hinge seat 26, thereby changing the axial angle of the arc gear 25 and the end face gear 27.

[0046] Reference Figure 2 and Figure 3 The turning mechanism 3 includes a tool holder 43 and several bolts 44. The tool holder 43 is fixedly connected to the tool table 5. A tool placement groove 45 for mounting a turning tool is formed on the tool holder 43. Several bolts 44 are respectively threadedly connected to the tool holder 43, and one end of each bolt 44 is respectively inserted into the tool placement groove 45. The turning tool can be removed by loosening the bolts 44, without the need for complex tools, shortening tool change time, and being suitable for tool replacement during mass production. The threaded connection of the bolts 44 provides sufficient clamping force to ensure that the turning tool is subjected to stable force during the cutting process, reducing vibration and chatter marks, and improving the quality of the machined surface.

[0047] Reference Figure 1 and Figure 2 A controller is also installed on the frame 1. The controller is used to receive signals from each motor and control the start and stop, forward and reverse rotation, etc. of each motor.

[0048] Reference Figure 1 and Figure 2 , the processing flow of this equipment for the bell-shaped shell 8 is: S1 Workpiece clamping: Place the bell housing 8 on the three-jaw chuck 21, which quickly and firmly clamps the workpiece. According to the length of the bell housing 8, move the spindle box 22 to adjust the relative position of the workpiece and the tool. After clamping, turn the motor 23 to drive the three-jaw chuck 21 to rotate the workpiece, preparing for processing. S2 Turning mechanism 3 adjustment: The controller drives the X-axis servo motor and the Y-axis servo motor according to the parameters of the spherical surface 46 of the bell housing 8: The X-axis drive device drives the tool table 5 to slide along the X-axis guide rail on the slide 6 to adjust the position of the turning tool in the X direction; The Y-axis drive device drives the slide 6 to slide along the Y-axis guide rail on the frame 1 to adjust the position of the turning tool in the Y direction: Finally, the turning tool of the turning mechanism 3 is accurately aligned with the starting position of the spherical surface 46 to be processed on the workpiece; S3 milling mechanism 4 adjustment: Spacing adjustment: Based on the number and spacing parameters of the 8-ball grooves 47 in the bell housing, the controller activates the first motor 34 of the position adjustment assembly 29. The first motor 34 drives the first gear 33 to rotate, which, through engagement with the first ring gear 35, drives the first flat threaded disk 32 to rotate, causing the multiple sliding seats 30 to slide synchronously in a direction perpendicular to the axis of the end gear 27. This, in turn, drives the tool holder 24 to move via the articulated seat 26, adjusting the spacing between the multiple milling cutters to match the groove spacing requirements. Angle adjustment: Based on the curvature parameters of the ball groove 47, the controller activates the second motor 41 of the angle adjustment assembly 28. The second motor 41 drives the second gear 40 to rotate, which, through engagement with the second ring gear 42, drives the second flat threaded disk 39 to rotate, causing the multiple sliding blocks 36 to slide synchronously. The sliding blocks 36 pull / push the tool holder 24 to rotate around the hinge seat 26 via the hinge rod 37, adjusting the axial angle between the arc gear 25 and the end gear 27 to ensure that the milling cutter cutting path meets the groove curvature requirements. S4 Turning of spherical surface 46: The controller starts the rotary motor 23, drives the three-jaw chuck 21 to rotate the bell housing 8; synchronously controls the rotary servo motor to drive the fixture table 17 to rotate slowly, and at the same time fine-tunes the position of the turning tool through the X and Y axis drive devices, so that the turning tool continuously cuts along the trajectory of the spherical surface 46 to complete the processing of the spherical surface 46; During the turning process, the annular guide rail 18 and the sliding support block 19 ensure the stable rotation of the fixture table 17 to prevent vibration from affecting the smoothness of the spherical surface 46; each servo motor accurately controls the speed and movement to ensure the dimensional accuracy of the spherical surface 46; S5 Milling of ball grooves 47: The controller drives the end face gear 27 to rotate, and by engaging with multiple arc gears 25, drives multiple milling cutters to rotate synchronously, so that the milling cutters cut along the trajectory of the ball grooves 47, and complete the processing of three ball grooves 47 at one time; after completing the processing of the first group of three ball grooves 47, the three-jaw chuck 21 is driven to rotate by the rotating motor 23 to start the processing of the second group of three ball grooves 47.

[0049] During the entire process, the servo motors work together to ensure the dimensional accuracy, position accuracy and consistency of the channel.

[0050] S6 Processing is completed: After all processing steps are completed, each driving device is turned off, the three-jaw chuck 21 is loosened, and the processed bell housing 8 is removed to complete the entire processing process.

[0051] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A bell-shaped housing special compound milling machine, comprising a frame (1), characterized in that: The machine also includes a clamping mechanism (2) for clamping a workpiece, a turning mechanism (3) for turning a spherical surface (46), and a milling mechanism (4) for milling a ball groove (47). The frame (1) is movably connected to a tool table (5). The milling mechanism (4) includes a plurality of tool mounting seats (24) for assembling milling cutters, a plurality of arc gears (25), a plurality of articulated seats (26), an end gear (27), an angle adjustment assembly (28), and a position adjustment assembly (29). The end gear (27) is rotatably connected to the tool table (5). The plurality of articulated seats (26) correspond to the plurality of arc gears (25) and the plurality of mounting seats (29). A tool holder (24), a plurality of hinge seats (26) are movably connected to the tool workbench (5), a plurality of tool mounting seats (24) are rotatably connected to the corresponding hinge seats (26), a plurality of arc gears (25) are coaxially and fixedly connected to the corresponding tool mounting seats (24), and a plurality of arc gears (25) are always in meshing connection with the end face gears (27), the angle adjustment component (28) is used to simultaneously adjust the shaft angles between the plurality of arc gears (25) and the end face gears (27), and the position adjustment component (29) is used to simultaneously adjust the spacing between the plurality of arc gears (25).

2. A bell-shaped housing special compound milling machine according to claim 1, characterized in that: The position adjustment assembly (29) includes a plurality of sliding seats (30) and a first driving member (31), wherein the plurality of sliding seats (30) correspond to a plurality of articulated seats (26), respectively, and the plurality of sliding seats (30) are respectively slidably connected to the tool workbench (5) along an axial direction perpendicular to the end face gear (27), and the plurality of articulated seats (26) are respectively articulatedly connected to the corresponding sliding seats (30), and the first driving member (31) is used to simultaneously drive the sliding of the plurality of sliding seats (30).

3. A bell-shaped housing special compound milling machine according to claim 2, characterized in that: The first driving member (31) includes a first planar threaded disk (32), a first gear (33) and a first motor (34); the first planar threaded disk (32) is rotatably connected to the tool workbench (5); a plurality of the sliding seats (30) are respectively threadedly connected to the first planar threaded disk (32); the first planar threaded disk (32) is coaxially and fixedly connected to a first gear ring (35); the first gear (33) is rotatably connected to the tool workbench (5); the first gear (33) is meshed with the first gear ring (35); and the first motor (34) is used to drive the first gear (33) to rotate.

4. A bell-shaped housing special compound milling machine according to claim 2, characterized in that: The angle adjustment assembly (28) includes a plurality of sliding blocks (36), a plurality of hinged rods (37) and a second driving member (38), wherein the plurality of hinged seats (26) correspond to the plurality of sliding blocks (36) and the plurality of hinged rods (37), respectively, and the plurality of sliding blocks (36) are slidably connected to the corresponding hinged seats (26), and the two ends of the plurality of hinged rods (37) are hingedly connected to the corresponding sliding blocks (36) and the corresponding hinged seats (26), respectively, and the second driving member (38) is used to simultaneously drive the sliding of the plurality of sliding blocks (36).

5. The bell-shaped housing-specific compound milling machine according to claim 4, characterized in that: The second driving member (38) includes a second planar threaded disk (39), a second gear (40) and a second motor (41). The second planar threaded disk (39) is rotatably connected to the tool workbench (5). The plurality of sliding blocks (36) are respectively threadedly connected to the second planar threaded disk (39). A second ring gear (42) is coaxially and fixedly connected to the second planar threaded disk (39). The second gear (40) is rotatably connected to the tool workbench (5). The second gear (40) is meshed with the second ring gear (42). The second motor (41) is used to drive the rotation of the second gear (40).

6. The bell-shaped housing-specific compound milling machine according to claim 1, characterized in that: The clamping mechanism (2) comprises a three-jaw chuck (21) and a spindle box (22); a fixture workbench (17) is rotatably connected to the frame (1); the spindle box (22) is movably connected to the fixture workbench (17); and the three-jaw chuck (21) is rotatably connected to the spindle box (22).

7. The bell-shaped housing-specific compound milling machine according to claim 6, characterized in that: The frame (1) is provided with an annular guide rail (18), the bottom of the fixture workbench (17) is provided with a sliding support block (19), the sliding support block (19) slides along the annular guide rail (18), and a rotary servo motor is fixedly mounted on the frame (1), and the rotary servo motor is used to drive the fixture workbench (17) to rotate around the central axis of the annular guide rail (18).

8. The bell-shaped housing-specific compound milling machine according to claim 1, characterized in that: The turning mechanism (3) comprises a tool holder (43) and a plurality of bolts (44); the tool holder (43) is fixedly connected to a tool workbench (5); a tool placement groove (45) for mounting a turning tool is provided on the tool holder (43); a plurality of bolts (44) are respectively threadedly connected to the tool holder (43), and one end of each of the bolts (44) is respectively passed through the tool placement groove (45).

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