Centering clamping mechanism and ring processing equipment

Abstract

The present application discloses a centering clamping mechanism and a ring processing device, and relates to the field of ring processing technology. The centering clamping mechanism includes a mounting frame, a driving member, a transmission unit, and at least three groups of clamping units; the at least three groups of clamping units are evenly distributed and installed in the circumferential direction of the mounting frame; the transmission unit is connected between the driving member and the at least three groups of clamping units; the transmission unit includes a movable seat and at least three swinging members, and the at least three swinging members are rotationally connected to the at least three groups of clamping units in a one-to-one correspondence; one end of the swinging member close to the movable seat is rotationally connected to a rolling member, and the rolling member is rotationally connected to the movable seat; the driving member is used to drive the movable seat to move, so as to drive the at least three swinging members to move synchronously, and then the at least three swinging members drive the at least three groups of clamping units to center, clamp or release the ring. The centering clamping mechanism provided by the present application can avoid the problem of the transmission unit getting stuck during operation.

Description

Technical Field

[0001] The present application relates to the technical field of ring processing, and in particular to a centering clamping mechanism and ring processing equipment. Background Art

[0002] During the processing of flanges and other ring parts, especially before drilling bolt holes after the ring is finely turned, the ring needs to be centered so that the center of the ring is aligned with the center of the machine tool so that the machine tool can process the bolt hole at the set position of the ring.

[0003] However, the existing ring centering mechanism is prone to jamming during operation, thereby affecting processing efficiency. Summary of the invention

[0004] The present application provides a centering clamping mechanism and a ring processing device to avoid the problem of jamming during the working process and ensure the processing efficiency.

[0005] To solve the above problems, this application provides:

[0006] A centering clamping mechanism, used for centering clamping of a ring, comprises a mounting frame, a driving member, a transmission unit and at least three groups of clamping units; the at least three groups of clamping units are evenly distributed and installed in the circumferential direction of the mounting frame; the transmission unit is connected between the driving member and the at least three groups of clamping units;

[0007] The transmission unit comprises a movable seat and at least three swinging members, wherein the at least three swinging members are rotatably connected to the at least three groups of clamping units in a one-to-one correspondence; a rolling member is rotatably connected to one end of the swinging member close to the movable seat, and the rolling member is rotatably connected to the movable seat;

[0008] The driving member is used to drive the movable seat to move, so as to drive the at least three swing members to move synchronously, and then the at least three swing members drive the at least three groups of clamping units to clamp or release the ring member in a centered manner.

[0009] In a possible implementation manner, the swing member includes a connecting portion, a first swing portion, and a second swing portion, wherein the first swing portion and the second swing portion are disposed on both sides of the connecting portion;

[0010] The connecting part is rotatably mounted on the mounting frame; the first swinging part is connected to the movable seat through the rolling element; and the second swinging part is rotatably connected to the clamping unit.

[0011] In a possible implementation manner, a limiting groove is arranged around the circumference of the movable seat, and the limiting groove is coaxially arranged with the at least three groups of clamping units; and the rolling element is limited in rolling in the limiting groove.

[0012] In a possible implementation, the clamping unit includes a mounting seat, a sliding frame and a chuck, the sliding frame is slidably mounted in the mounting seat, and the sliding direction of the sliding frame is arranged along the radial direction of the mounting frame; the chuck is arranged on a side of the sliding frame away from the mounting seat;

[0013] The sliding frame is connected to the transmission unit, and the transmission unit is used to drive the sliding frame to slide along the radial direction of the mounting frame, so as to drive the clamping head to center and clamp or release the ring.

[0014] In a possible implementation manner, the clamping unit further includes a driving assembly and a transmission rod disposed in the sliding frame, and the transmission rod is respectively connected to the driving assembly and the clamping head in a transmission manner;

[0015] The driving assembly is used to drive the transmission rod to move, so as to drive the clamp to move relative to the sliding frame. The clamp is arranged along the radial direction of the mounting frame along the moving direction of the sliding frame.

[0016] In a possible implementation, the driving assembly includes a stepping motor, and the transmission rod is threadedly connected to the chuck; in the circumferential direction of the transmission rod, the sliding frame is used to limit the rotation of the chuck;

[0017] The stepper motor is used to drive the transmission rod to rotate, so as to drive the clamp to move along the sliding frame.

[0018] In a possible implementation manner, the chuck is transmission-connected to the transmission rod via a transmission sleeve, the transmission sleeve is threadedly connected to the transmission rod, and the chuck is fixedly connected to the transmission sleeve.

[0019] In a possible implementation manner, the transmission sleeve is a half-nut.

[0020] In a possible implementation manner, a copper plate is disposed around the outer side of the chuck, and the copper plate is used to reduce the collision of the chuck with the ring.

[0021] On the other hand, the present application provides a ring processing device, including the centering clamping mechanism.

[0022] The beneficial effects of the present application are as follows: the present application proposes a centering clamping mechanism, comprising a mounting frame, a driving member, a transmission unit and at least three groups of clamping units, wherein the at least three groups of clamping units are evenly distributed around the circumference of the mounting frame, and the transmission unit is transmission-connected between the driving member and the at least three groups of clamping units. The transmission unit comprises a movable seat and at least three swinging members, wherein the at least three swinging members are rotationally connected to the at least three groups of clamping units in a one-to-one correspondence. One end of the swinging member away from the clamping unit is connected to the movable seat through a rolling member, and the rolling member is rotationally connected to the swinging member and the movable seat, respectively. During operation, the driving member is used to drive the movable seat to move, so as to drive the at least three swinging members to move synchronously, and then the at least three swinging members drive the at least three groups of clamping units to center, clamp or release the ring.

[0023] During the operation of the centering clamping mechanism, the transmission unit is usually prone to jamming. In the present application, since the swinging member is rotationally connected to the clamping unit, the swinging member is rotationally connected to the rolling member, and the rolling member is rotationally connected to the movable seat, compensation can be made during the transmission process through relative rotation between the swinging member, the rolling member, the movable seat, and the clamping unit components. That is, when jamming occurs in the transmission unit, the jamming problem can be resolved through relative rotation between related components to avoid further jamming. Thus, it can be ensured that the transmission unit can move smoothly under the drive of the driving member, and then the clamping unit can move smoothly, avoiding jamming of the centering clamping mechanism, and ensuring processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the top view of a ring centering clamping mechanism is shown;

[0026] Figure 2 A schematic diagram of the installation structure of a clamping unit and a mounting frame is shown;

[0027] Figure 3 Shows Figure 2 A schematic diagram of the partially enlarged structure of part A;

[0028] Figure 4 A cross-sectional schematic diagram showing a state where a clamping unit and a transmission unit are connected;

[0029] Figure 5 Shows Figure 4A schematic diagram of the partially enlarged structure of part B;

[0030] Figure 6 Shows Figure 4 A schematic diagram of the local enlarged structure of part C in the middle;

[0031] Figure 7 A schematic diagram of a local structure in which a clamping unit and a transmission unit are connected is shown;

[0032] Figure 8 A schematic structural diagram of a swinging member is shown;

[0033] Fig. 9 It shows a schematic structural diagram of the clamping unit in one state;

[0034] Fig.10 A schematic structural diagram of the clamping unit in another state is shown.

[0035] Description of main component symbols:

[0036] 10-mounting frame; 11-support plate; 111-support seat; 112-first avoidance hole; 12-base; 121-second avoidance hole;

[0037] 20-clamping unit; 21-mounting seat; 211-slideway; 22-sliding frame; 221-connecting seat; 2211-third rotating shaft; 222-mounting slot; 223-sliding bearing; 23-driving assembly; 231-stepping motor; 232-reducer; 24-transmission rod; 25-chuck; 251-connecting sleeve; 252-red copper plate; 26-transmission sleeve; 27-cover plate;

[0038] 30-driving member; 31-output shaft;

[0039] 40-transmission unit; 41-movable seat; 411-limiting groove; 42-swinging member; 421-connecting part; 4211-connecting hole; 422-first swinging part; 423-second swinging part; 4231-insertion groove; 424-first side surface; 425-second side surface; 43-first rotating shaft; 44-rolling member; 45-second rotating shaft;

[0040] 50-Rings. DETAILED DESCRIPTION

[0041] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] Embodiment 1

[0047] During the processing of a ring part 50 such as a flange, especially when drilling a hole in the ring part 50 after fine turning, it is necessary to first align the center of the ring part 50 with the center of the drilling machine to ensure that the drilling machine processes a hole structure at a specified position of the ring part 50.

[0048] In the embodiment, a centering clamping mechanism is provided, which can be used in the processing of the ring 50 to center and clamp the ring 50 so that a subsequent drilling machine tool can perform precise drilling processing on the ring 50.

[0049] In other embodiments, the centering and clamping mechanism provided in the present application may also be used in other processes during the processing of the ring 50 to perform centering and clamping on the ring 50 .

[0050] like Figure 1 , Figure 2 and Figure 4 As shown, the centering clamping mechanism includes a mounting frame 10 , a driving member 30 , a transmission unit 40 and at least three groups of clamping units 20 .

[0051] In some specific embodiments, the mounting frame 10 includes a base 12 and a support plate 11. The support plate 11 may be a circular plate-shaped structure, and the base 12 may be a cylindrical structure with one side open. The support plate 11 is arranged around the base 12, and the support plate 11 is arranged close to the open end of the base 12, and the side wall of the base 12 is perpendicular to the plane where the support plate 11 is located. The support plate 11 and the base 12 are fixedly connected to ensure the support strength of the mounting frame 10 and prevent the centering clamping mechanism from shaking at will.

[0052] In some specific embodiments, the mounting frame 10 can be welded from a thick-walled seamless steel pipe and a thick plate, and the mounting frame 10 is annealed after welding to relieve stress on the mounting frame 10 and ensure the stability of the mounting frame 10. The verticality between the base 12 and the support plate 11 should be ensured to be within 0.5. When the base 12 is processed from a thick-walled seamless steel pipe, it can be processed by CNC plasma or wire cutting.

[0053] The at least three groups of clamping units 20 are evenly distributed and installed in the circumferential direction of the mounting frame 10. Specifically, the at least three groups of clamping units 20 are installed on the support plate 11 and are evenly distributed around the center of the base 12. That is, the central axis of the at least three groups of clamping units 20 is arranged to coincide with the central axis of the mounting frame 10. In an embodiment, the corresponding ring members 50 can be centered, clamped or released by the at least three groups of clamping units 20. During use, the center of the mounting frame 10 can be centered with the center of the drilling machine, so that the center of the at least three groups of clamping units 20 can be aligned with the center of the drilling machine. By aligning and clamping the ring member 50 by the at least three groups of clamping units 20, the center of the ring member 50 can be centered with the center of the drilling machine.

[0054] like Figure 4As shown, the driving member 30 and the transmission unit 40 are both mounted on the mounting frame 10. Specifically, the driving member 30 is mounted on the base 12, and the output shaft 31 of the driving member 30 is coaxially arranged with the base 12. The transmission unit 40 is mounted on the support plate 11, and the transmission unit 40 is coaxially arranged with the mounting frame 10. At the same time, the transmission unit 40 is connected between the driving member 30 and the at least three groups of clamping units 20. During the working process, the driving member 30 is used to drive the transmission unit 40 to move, so that the transmission unit 40 drives the at least three groups of clamping units 20 to perform synchronous movements, so that the at least three groups of clamping units 20 can align and clamp or release the ring 50.

[0055] like Figure 1 and Figure 4 As shown, in some specific embodiments, the transmission unit 40 includes a movable seat 41 and at least three swinging members 42. The movable seat 41 is connected to the output shaft 31 of the driving member 30, and the movable seat 41 is coaxially arranged with the output shaft 31. The at least three swinging members 42 are arranged around the movable seat 41, and the at least three swinging members 42 are arranged one by one with at least three clamping units 20, and the swinging members 42 are respectively between the movable seat 41 and the clamping units 20 at corresponding positions. During operation, the driving member 30 is used to drive the movable seat 41 to move, and the movable seat 41 drives the at least three swinging members 42 to move synchronously. At the same time, the at least three swinging members 42 drive the clamping units 20 at corresponding positions to move synchronously, so as to realize centering, clamping or releasing the ring member 50. It can be understood that the synchronous action of the clamping unit 20 can refer to the synchronization between the at least three groups of clamping units 20, that is, synchronous clamping or synchronous release of the ring member 50.

[0056] In the embodiment, the structures and installation methods of the at least three swing members 42 are the same, and one of them will be introduced below.

[0057] Recombination Figure 5 As shown, one end of the swing member 42 close to the movable seat 41 is rotatably connected to a rolling member 44, and at the same time, the rolling member 44 is rotatably connected to the movable seat 41, thereby realizing the connection between the swing member 42 and the movable seat 41. The other end of the swing member 42 is rotatably connected to the corresponding clamping unit 20.

[0058] During operation, the ring 50 can be placed in the centering clamping mechanism, and the center of the ring 50 is roughly placed corresponding to the center of the mounting frame 10. The driving member 30 drives the movable seat 41 to move, and the movable seat 41 drives the at least three swinging members 42 to move synchronously, and then the at least three swinging members 42 drive the at least three groups of clamping units 20 to center clamp or release the ring 50.

[0059] During the process of the driving member 30 driving the movable seat 41 and the swing member 42 to move, the swing member 42 and the movable seat 41 are rotationally connected through the rolling member 44, and the rolling member 44 can rotate relative to the swing member 42 and the movable seat 41, and at the same time, the swing member 42 and the clamping unit 20 are also rotationally connected. Therefore, during the transmission process of the movable seat 41 and the swing member 42, the relative rotation between the components can be used to avoid the problem of jamming, so that the transmission unit 40 will not be jammed during the operation process.

[0060] In the prior art, some centering clamping mechanisms are provided with a ball structure at one end of the swinging member 42 close to the movable seat 41, and the ball structure is rotatably connected to the movable seat 41, while the ball structure and the swinging member 42 are fixedly connected. During the operation of the transmission unit 40, when problems such as jamming occur between the ball structure, the swinging member 42 and the movable seat 41, the ball structure and the swinging member 42 cannot rotate relative to each other, and thus cannot be released by rotating the swinging member 42 alone, which easily causes the ball structure, the swinging member 42 and the movable seat 41 to be completely stuck, even if the transmission unit 40 is completely stuck.

[0061] In summary, the centering clamping mechanism provided in the present application is unlikely to cause the transmission unit 40 to get stuck during operation, thereby ensuring processing efficiency and avoiding damage to other components caused by the transmission unit 40 getting stuck.

[0062] Embodiment 2

[0063] The embodiment provides a centering clamping mechanism that can be used for processing large ring parts such as flanges. It can be understood that this embodiment is a further improvement made on the basis of the first embodiment.

[0064] like Figure 4 As shown, in some specific embodiments, the driving member 30 can be a hydraulic cylinder, and the cylinder body of the hydraulic cylinder is fixedly mounted on the bottom surface of the base 12, that is, the end of the base 12 away from the support plate 11. The piston rod of the hydraulic cylinder is arranged toward the inner end of the base 12, that is, the output shaft 31 of the driving member 30 is arranged toward the inner part of the base 12.

[0065] The movable seat 41 is fixedly connected to the output shaft 31 of the driving member 30. The end of the output shaft 31 away from the cylinder body can be fixedly connected to the movable seat 41 by welding, clamping, threaded fitting, etc. During operation, the driving member 30 is used to drive the movable seat 41 to move along the axial direction of the mounting frame 10, so that the movable seat 41 can move up and down relative to the mounting frame 10.

[0066] In other embodiments, the driving member 30 may also be a motor, an electric push rod or other driving member to drive the movable seat 41 to move up and down relative to the mounting frame 10. It is understandable that when the driving member 30 is a motor, the output shaft 31 may be a screw, and the output shaft 31 may be threadedly connected to the movable seat 41. Accordingly, the movable seat 41 may be limitedly connected to the mounting frame 10 to limit the movable seat 41 from rotating with the output shaft 31.

[0067] In the embodiment, the movable seat 41 and the output shaft 31 are coaxially arranged, so that the movable seat 41 can maintain balance and each position of the movable seat 41 in the circumferential direction is at the same height relative to the mounting frame 10, thereby preventing the movable seat 41 from tilting.

[0068] like Figure 4 and Figure 7 As shown, in some specific embodiments, the movable seat 41 may also be a cylindrical structure with one side open, and the movable seat 41 is covered at the open end of the base 12. The output shaft 31 of the driving member 30 passes through the movable seat 41 and is fixedly connected to the upper end wall of the movable seat 41.

[0069] In the embodiment, the outer surface of the circumferential side wall of the movable seat 41 can be in contact with the inner side wall of the base 12. When the movable seat 41 is lifted and lowered, the movable seat 41 can slide in / out relative to the base 12, and the inner side wall of the base 12 can guide the movement of the movable seat 41, further preventing the movable seat 41 from tilting.

[0070] In other embodiments, the movable seat 41 may also be configured as a solid cylindrical structure.

[0071] like Figure 4 , Figure 5 and Figure 7 As shown, an annular limiting groove 411 is provided on the outer side wall of the movable seat 41, and the limiting groove 411 is coaxially arranged with the movable seat 41. The depth direction of the limiting groove 411 is extended along the radial direction of the movable seat 41. In some specific embodiments, the limiting groove 411 is provided at one end of the movable seat 41 away from the opening thereof. In the embodiment, the rolling member 44 is limitedly connected in the limiting groove 411, thereby realizing the connection between the swinging member 42 and the movable seat 41.

[0072] like Figure 1 As shown, in this embodiment, six groups of clamping units 20 are provided, and the six groups of clamping units 20 are evenly distributed around the mounting frame 10, so that each part of the ring member 50 is evenly stressed. Correspondingly, the transmission unit 40 includes six swing members 42, and the swing members 42 are arranged one by one corresponding to the clamping units 20. In the embodiment, the structure and installation method of the six swing members 42 are the same, and the structure and installation method of the six groups of clamping units 20 are the same, and each of them will be introduced in the following.

[0073] like Figure 8 As shown, the swing member 42 is a triangular structure. The swing member 42 includes a connecting portion 421, a first swing portion 422 and a second swing portion 423, the connecting portion 421, the first swing portion 422 and the second swing portion 423 are respectively arranged at three angular positions of the swing member 42, and the first swing portion 422 and the second swing portion 423 are respectively arranged on both sides of the connecting portion 421.

[0074] Recombination Figures 3 to 5 as well as Figure 7 As shown, the connecting portion 421 is rotatably mounted on the support plate 11 through the first rotating shaft 43. Specifically, a support seat 111 is provided at a corresponding position on the support plate 11, and the connecting portion 421 is provided with a connecting hole 4211 for the first rotating shaft 43 to pass through. The connecting portion 421 is rotatably mounted on the support seat 111 through the first rotating shaft 43, that is, the swing member 42 can rotate relative to the support plate 11. Through the rotatable installation of the connecting portion 421, the first swing portion 422 and the second swing portion 423 can be linked, that is, when the first swing portion 422 moves, the second swing portion 423 can also be driven to move accordingly. The plane where the swing member 42 is located is perpendicular to the plane where the support plate 11 is located, and the plane where the swing member 42 is located is arranged along the radial direction of the support plate 11.

[0075] The first swinging portion 422 is arranged on the side of the swinging member 42 close to the movable seat 41, and correspondingly, the rolling member 44 is installed on the first swinging portion 422. Specifically, the rolling member 44 is rotatably installed at the first swinging portion 422 through the second rotating shaft 45. In the thickness direction of the swinging member 42, a rolling member 44 is respectively arranged on both sides of the first swinging portion 422. It can be understood that the second rotating shaft 45 is arranged through the swinging member 42, and the two rolling members 44 are respectively installed at the two ends of the second rotating shaft 45. The second rotating shaft 45 is arranged perpendicular to the swinging member 42. Both rolling members 44 can rotate relative to the first swinging portion 422. In some specific embodiments, the rolling member 44 can be a roller.

[0076] In other embodiments, the rolling element 44 may also be a spherical structure.

[0077] In the embodiment, in the radial direction of the rolling element 44, the outer edge of the rolling element 44 is arranged to protrude from the outer edge of the first swinging portion 422. Therefore, when the rolling element 44 is embedded in the limiting groove 411, the outer edge of the rolling element 44 can directly contact the inner wall of the limiting groove 411, thereby preventing the outer edge of the first swinging portion 422 from contacting the inner wall of the limiting groove 411, and further preventing the first swinging portion 422 from interfering with the relative rotation between the rolling element 44 and the limiting groove 411. In this way, the connection between the first swinging portion 422 and the movable seat 41 is achieved.

[0078] In some specific embodiments, in the axial direction of the mounting frame 10, the upper and lower outer edges of the rolling element 44 are in contact with the upper and lower inner walls corresponding to the limiting groove 411. Thus, when the movable seat 41 moves up and down, the rolling element 44 can be pushed to move up and down synchronously. When the rolling element 44 moves up and down, the rolling element 44 will rotate around the first rotating shaft 43. Since the vertical distance between the movable seat 41 and the first rotating shaft 43 remains unchanged, the rolling element 44 will move radially along the movable seat 41. In the embodiment, the limiting groove 411 has a certain depth to provide space for the movement of the rolling element 44 in the radial direction of the movable seat 41. When the second rotating shaft 45 and the first rotating shaft 43 rotate to the same horizontal height, the bottom surface of the limiting groove 411 can be in non-force contact with the outer edge of the rolling element 44 or leave a gap to ensure the smooth movement of the swinging member 42 and the movable seat 41. It is understandable that when the movable seat 41 moves to the highest position or the lowest position relative to the mounting frame 10 , the rolling element 44 is still embedded in the limiting groove 411 to prevent the first swinging portion 422 from being disconnected from the movable seat 41 .

[0079] In the embodiment, the six pairs of rolling members 44 connected to the six swing members 42 are all embedded in the same limiting groove 411, and the six pairs of rolling members 44 are evenly distributed in the limiting groove 411. When the driving member 30 drives the movable seat 41 to move, the six swing members 42 can be driven to move synchronously, thereby driving the six groups of clamping units 20 to move synchronously.

[0080] like Figure 3 and Figure 7 As shown, in the embodiment, in order to prevent the base 12 from interfering with the movement of the transmission unit 40, a second avoidance hole 121 is provided at the position of the base 12 corresponding to the swinging member 42 to provide avoidance space for the movement of the swinging member 42. Furthermore, a first avoidance hole 112 is also provided on the support plate 11, and the first avoidance hole 112 is connected to the second avoidance hole 121 to provide avoidance for the swinging of the swinging member 42, so as to prevent the support plate 11 from hindering the movement of the swinging member 42. Accordingly, the support seat 111 can be fixedly provided on the side wall of the first avoidance hole 112, and the swinging member 42 is installed at the position of the first avoidance hole 112 through the support seat 111. In this way, the movable seat 41 and the swinging member 42 can be ensured to move smoothly.

[0081] Furthermore, the first side surface 424 between the first swing portion 422 and the connecting portion 421 is in the shape of an inwardly concave arc surface, and the second side surface 425 between the first swing portion 422 and the second swing portion 423 is also in the shape of an inwardly concave arc surface. Thus, the movable seat 41 can be prevented from interfering with the swinging of the swinging member 42, and the problem of the movable seat 41 and the swinging member 42 being stuck can be further avoided.

[0082] When the driving member 30 drives the movable seat 41 to move up and down relative to the mounting frame 10, the movable seat 41 can drive the rolling member 44 to move up and down synchronously, and then the rolling member 44 drives the first swinging part 422 to move up and down, and at the same time, the first swinging part 422 rotates around the first rotating shaft 43. Correspondingly, the second swinging part 423 will also rotate around the first rotating shaft 43 driven by the first swinging part 422, and the second swinging part 423 will move in the radial direction of the mounting frame 10. It can be understood that when the movable seat 41 moves, it can drive the six swinging members 42 to move synchronously.

[0083] Furthermore, the second swinging part 423 of the swinging member 42 is rotatably connected to the clamping unit 20. Specifically, the second swinging part 423 is provided with an insertion groove 4231, and the insertion groove 4231 has a notch connected to the outside, and the notch is arranged in a direction away from the first rotating shaft 43. The clamping unit 20 is fixedly provided with a third rotating shaft 2211 at one end close to the swinging member 42, and the insertion groove 4231 is plug-connected with the third rotating shaft 2211, and the inner side wall of the insertion groove 4231 is in contact with the outer side wall of the third rotating shaft 2211, so that the second swinging part 423 drives the third rotating shaft 2211 to move. The third rotating shaft 2211 can rotate in the insertion groove 4231, that is, the swinging member 42 and the third rotating shaft 2211 can rotate relative to each other. In order to prevent the second swinging part 423 from being disengaged from the third shaft 2211 during the operation, at least half of the third shaft 2211 is embedded in the insertion groove 4231 in the radial direction of the third shaft 2211. In the radial direction of the swinging arc of the swinging member 42, the insertion groove 4231 has a certain length to provide space for the third shaft 2211 to move in the insertion groove 4231.

[0084] In the embodiment, the first rotating shaft 43, the second rotating shaft 45 and the third rotating shaft 2211 are all subjected to modulation treatment during processing to ensure mechanical strength.

[0085] In other embodiments, the swing member 42 may not need to be provided with the connecting portion 421 , that is, the swing member 42 is directly connected between the movable seat 41 and the clamping unit 20 , and transmission can also be achieved.

[0086] like Figures 2 to 4 as well as Figure 6As shown, the clamping unit 20 includes a mounting seat 21, a sliding frame 22 and a chuck 25. Among them, one end of the mounting seat 21 is fixedly mounted on the support plate 11, and the mounting seat 21 is arranged to extend radially along the mounting frame 10. The sliding frame 22 is slidably mounted on the mounting seat 21, and the sliding direction of the sliding frame 22 is arranged radially along the mounting frame 10. Correspondingly, a slide groove 211 for accommodating the sliding frame 22 is arranged in the mounting seat 21. Both the mounting seat 21 and the sliding frame 22 can be made of cast steel. During the processing of the mounting frame 10, the shape and position tolerances of the mounting seat 21 and the sliding frame 22 should be strictly controlled to ensure that the sliding frame 22 can slide smoothly relative to the mounting seat 21, and the sliding frame 22 should be avoided as much as possible to shake randomly relative to the mounting seat 21. When installing the centering clamping mechanism, the bottom surface of the mounting seat 21 should be in contact with the surface of the drilling machine tool to avoid vibration of the mounting seat 21 during processing and affect the centering accuracy of the ring 50.

[0087] The chuck 25 is arranged on a side of the sliding frame 22 away from the mounting seat 21. When the sliding frame 22 slides relative to the mounting seat 21, the chuck 25 can be driven to move synchronously. The chuck 25 is used to contact the ring 50 to achieve centering, clamping or releasing the ring 50.

[0088] In some specific embodiments, a copper plate 252 is disposed around the outer side of the chuck 25, which can reduce collision damage to the ring 50 and avoid damage to the ring 50 during the centering and clamping process while ensuring that the centering and clamping accuracy is not affected. When machining the chuck 25, the chuck 25 of each clamping unit 20 can be uniformly milled flat by a milling cutter on a drilling machine.

[0089] In the embodiment, a connection seat 221 is fixedly disposed at one end of the sliding frame 22 close to the mounting frame 10. A third rotating shaft 2211 is disposed at one side of the connection seat 221 close to the swing member 42, and the swing member 42 is rotatably connected to the connection seat 221 through the third rotating shaft 2211, thereby realizing the connection between the swing member 42 and the sliding frame 22.

[0090] When the swing member 42 swings around the first rotating shaft 43, the second swing portion 423 moves in the radial direction of the mounting frame 10, and the second swing portion 423 drives the third rotating shaft 2211 to move in the radial direction of the mounting frame 10, thereby driving the sliding frame 22 to move in the radial direction of the mounting frame 10, that is, the sliding frame 22 slides relative to the mounting seat 21. Accordingly, the movement of the clamp 25 in the radial direction of the mounting frame 10 can be achieved to achieve centering, clamping or releasing of the ring member 50.

[0091] In the embodiment, when the second swinging portion 423 drives the third rotating shaft 2211 to move along the radial direction of the mounting frame 10, the vertical distance between the third rotating shaft 2211 and the support plate 11 remains unchanged, so that the third rotating shaft 2211 moves in the radial direction of the swing arc corresponding to the swinging member 42. In the embodiment, in the radial direction corresponding to the swing arc of the swinging member 42, the length of the insertion groove 4231 satisfies the moving range of the third rotating shaft 2211. It can be understood that in the direction perpendicular to the bottom surface of the mounting seat 21, the mounting seat 21 can limit the sliding frame 22 to prevent the sliding frame 22 from being lifted relative to the mounting seat 21 under the drive of the swinging member 42. In some specific embodiments, the mounting seat 21 is provided with a limiting plate for limiting the sliding frame 22 on the side corresponding to the opening of the slide groove 211 to prevent the sliding frame 22 from being lifted.

[0092] like Fig. 9 and Fig.10 As shown, during operation, when the driving member 30 drives the movable seat 41 to rise and fall, the swing member 42 can be driven to rotate around the first rotating shaft 43, so that the second swinging part 423 drives the third rotating shaft 2211 to move in the radial direction of the mounting frame 10. That is, the sliding frame 22 can be driven to slide along the mounting seat 21, and then the sliding frame 22 drives the clamping head 25 to move in the radial direction of the mounting frame 10, so that the clamping head 25 is close to or away from the central axis of the mounting frame 10, so as to clamp or release the ring member 50 in a centered manner.

[0093] like Figure 6 , Fig. 9 and Fig.10 As shown, the clamping unit 20 also includes a driving assembly 23 and a transmission rod 24 disposed in the sliding frame 22, and a mounting groove 222 for accommodating the driving assembly 23 and the transmission rod 24 is disposed in the sliding frame 22. The transmission rod 24 is connected between the driving assembly 23 and the chuck 25, and the driving assembly 23 is used to drive the transmission rod 24 to move, so as to drive the chuck 25 to move relative to the sliding frame 22. The moving direction of the chuck 25 relative to the sliding frame 22 is arranged along the radial direction of the mounting frame 10. It can be understood that the side of the mounting groove 222 close to the chuck 25 is an open structure, so that the chuck 25 is connected to the transmission rod 24. In the embodiment, because the driving assembly 23 is disposed in the sliding frame 22, the driving assembly 23 can move with the sliding frame 22, and accordingly, the wire connected to the driving assembly 23 also needs to move with it, and the wire connected to the driving assembly 23 can be selected as a winding soft wire.

[0094] In some specific embodiments, the driving assembly 23 includes a stepper motor 231 and a reducer 232, and correspondingly, the transmission rod 24 can be a screw. The reducer 232 is connected between the stepper motor 231 and the transmission rod 24, and the output shaft of the reducer 232 is coaxially arranged with the transmission rod 24. The chuck 25 can be threadedly connected with the transmission rod 24, and the opening structure of the mounting groove 222 can limit the chuck 25 to prevent the chuck 25 from rotating synchronously with the transmission rod 24, thereby realizing that the transmission rod 24 drives the chuck 25 to move along the sliding frame 22. Among them, the matching clearance between the chuck 25 and the opening structure of the mounting groove 222 is set at 0.2-0.5mm to ensure that the chuck 25 slides smoothly relative to the sliding frame 22, and also ensures the repeated positioning accuracy of the chuck 25.

[0095] In some embodiments, the chuck 25 and the transmission rod 24 can be connected to each other by a transmission sleeve 26. Specifically, the transmission sleeve 26 is sleeved on the transmission rod 24, and the transmission sleeve 26 is threadedly connected to the transmission rod 24. A connecting sleeve 251 is provided at one end of the chuck 25 close to the sliding frame 22, and the connecting sleeve 251 is fixedly sleeved on the transmission sleeve 26. During operation, the driving assembly 23 can drive the transmission rod 24 to rotate, and the chuck 25 can move along the sliding frame 22 under the threaded cooperation between the transmission sleeve 26 and the transmission rod 24, and the limiting effect of the sliding frame 22 on the chuck 25. In use, the user can adjust the position of the chuck 25 on the sliding frame 22 as needed, that is, the distance between the chuck 25 and the central axis of the mounting frame 10, so that the centering clamping mechanism is suitable for the ring 50 with a larger diameter variation range, thereby improving the versatility of the centering clamping mechanism. At the same time, it can also be used to calibrate the position of the chuck 25 so that the initial positions of the chucks 25 of the six groups of clamping units 20 are located on the same circumference.

[0096] In some specific embodiments, the transmission sleeve 26 is a half-thread nut, that is, half of the threads are arranged on the circumference of the transmission sleeve 26. Therefore, it is convenient to discharge the debris between the transmission sleeve 26 and the transmission rod 24, and avoid affecting the smooth transmission of the transmission sleeve 26 and the transmission rod 24. In the embodiment, the matching clearance between the transmission rod 24 and the transmission sleeve 26 is set at 0.2-0.5mm, which can ensure the smooth transmission between the transmission rod 24 and the transmission sleeve 26 while ensuring the repeated positioning accuracy, that is, further ensuring the repeated positioning accuracy of the chuck 25.

[0097] Of course, in other embodiments, it is not excluded that the transmission sleeve 26 adopts structures such as ball screw nut and nut sleeve.

[0098] In other embodiments, the chuck 25 may be directly connected to the transmission rod 24 in a transmission manner.

[0099] In other embodiments, the driving component 23 may also use a driving member such as an electric push rod, a cylinder, a hydraulic cylinder, etc. to drive the chuck 25 to move relative to the sliding frame 22, that is, to adjust the distance between the chuck 25 and the central axis of the centering clamping mechanism.

[0100] like Figure 4 As shown, a plurality of sliding bearings 223 are arranged at intervals in the mounting groove 222 of the sliding frame 22. The sliding bearings 223 are used to provide corresponding limiting support for the transmission rod 24 to prevent the transmission rod 24 from centrifugal movement, so as to ensure that the transmission rod 24 smoothly drives the chuck 25 to move, and ensure the working accuracy of the centering clamping mechanism.

[0101] In the embodiment, a non-circular through hole is provided at one end of the transmission rod 24 away from the driving assembly 23, so as to facilitate the connection of a tool such as a wrench. By rotating the transmission rod 24 with an external tool, the initial position of the chuck 25 can be fine-tuned to achieve calibration of the position of the chuck 25. When assembling the centering clamping mechanism, the transmission rod 24 can also be manually rotated to install the chuck 25 to a proper position of the sliding frame 22.

[0102] Of course, in other embodiments, the end of the transmission rod 24 away from the driving assembly 23 can also be set to a non-circular outer contour for connecting a corresponding tool such as a wrench to rotate the transmission rod 24 and calibrate the position of the chuck 25.

[0103] In an embodiment, the clamping unit 20 may further include a cover plate 27 , which is disposed on the mounting seat 21 and is arranged corresponding to the position of the driving assembly 23 , so as to protect the driving assembly 23 .

[0104] In other embodiments, the clamping units 20 may be arranged in three, four, five, seven, eight or other groups, and the clamping units 20 of each group are evenly spaced. The number of swing members 42 is equal to the number of clamping units 20 .

[0105] It can be understood that, in the embodiment, the centering clamping mechanism may also include a controller (not shown in the figure), and the driving member 30 and the driving components 23 in each group of clamping units 20 are electrically connected to the controller, so that the actions of each component are controlled by the controller.

[0106] Of course, in other embodiments, all electrical components of the centering clamping mechanism can be directly connected to the control mechanism of the ring processing equipment and controlled uniformly by the control mechanism.

[0107] The distance between the chuck 25 and the central axis of the mounting frame 10 is adjusted according to the size of the ring 50. Thus, when the chuck 25 is centered and clamped, the chuck 25 can act on the ring 50. Specifically, the driving assembly 23 in each group of clamping units 20 can be controlled by the controller to perform synchronous action, so that each chuck 25 approaches or moves away from the central axis of the mounting frame 10 at the same time, and the moving distance of each chuck 25 is equal, so as to ensure that the distance between each chuck 25 and the central axis of the mounting frame 10 is always equal. When deviation occurs in each chuck, the action of the clamping unit 20 with deviation can be controlled separately, so that the chuck 25 on the clamping unit 20 is on the same circumference as the other chucks 25. During this period, the transmission rod 24 can also be rotated by a tool such as a wrench to fine-tune the position of the chuck 25, so that the distance between each chuck 25 and the central axis of the mounting frame 10 is equal.

[0108] When the ring 50 is centered and clamped, the ring 50 can be placed on the side of the chuck 25 away from the central axis of the mounting frame 10, that is, the outside of the chuck 25, and the central axis of the ring 50 is roughly at the same position as the central axis of the mounting frame 10. Subsequently, the first driving member 30 is started to gradually lift the movable seat 41 relative to the mounting frame 10, thereby driving the swing member 42 to swing around the first rotating shaft 43. At the same time, the second swinging part 423 gradually rotates in the direction close to the support plate 11, and pushes the sliding frame 22 to move in the direction away from the central axis of the mounting frame 10, that is, drives the chuck 25 to gradually move in the direction away from the central axis of the mounting frame 10. During this period, the chuck 25 that first contacts the ring 50 will push the ring 50 to move in this direction to adjust the central axis position of the ring 50. When all the chucks 25 are in contact with the ring 50 and pressed tightly, it means that the ring 50 has been centered and clamped, and the driving member 30 can stop the action to keep the corresponding clamping effect between the chuck 25 and the ring 50. Then, the corresponding drilling process can be performed on the ring member 50. When the ring member 50 needs to be removed, the driving member 30 can be controlled to move in the reverse direction to release the ring member 50.

[0109] In the embodiment, the controller can control the stroke of the driving member 30 according to the diameter of the ring 50 to prevent the clamp 25 from applying too much or too little force to the ring 50. Of course, the size of the ring 50 can be set in advance in the controller.

[0110] In other embodiments, corresponding pressure sensors may be provided to detect the force between the chuck 25 and the ring 50. When the force between the chuck 25 and the ring 50 reaches a set value, the pressure sensor may feedback information to the controller, and the controller controls the driving member 30 to stop the action, so as to avoid excessive or insufficient force applied by the chuck 25 to the ring 50.

[0111] In other embodiments, the ring 50 may also be placed on the side of the chuck 25 close to the central axis of the mounting frame 10, that is, on the inner side of the chuck 25. When the ring 50 is centered and clamped, the driving member 30 may be controlled to move a distance away from the central axis of the mounting frame 10 to facilitate the placement of the ring 50 on the inner side of the chuck 25. The ring 50 is placed on the inner side of the chuck 25, and the central axis of the ring 50 is roughly aligned with the central axis of the mounting frame 10. The driving member 30 is started to perform a reverse action, so that each chuck 25 gradually moves toward the central axis of the mounting frame 10. During this period, the chuck 25 that first contacts the ring 50 will push the ring 50 to move to the opposite side, so that the central axis of the ring 50 moves toward the central axis of the mounting frame 10. When all the chucks 25 are in contact with the ring 50 and clamped, the ring 50 can be aligned with the mounting frame 10, and the chuck 25 clamps the ring 50.

[0112] In summary, the centering clamping mechanism provided by the present application can realize the automatic centering clamping of the ring 50, and the operation is simple, so as to improve the processing efficiency of the ring 50. At the same time, the ring 50 can be clamped and fixed by the chuck 25, which can save the process of fixing the ring 50 by other structures, and further save processing time. In addition, by setting the driving assembly 23 and the transmission rod 24, the position of the chuck 25 on the sliding frame 22 can be adjusted, so that the centering clamping mechanism is suitable for centering clamping of a wider range of rings 50, and has higher versatility.

[0113] Embodiment 3

[0114] The embodiment provides a ring processing device, including the centering clamping mechanism provided in the embodiment 1 or the embodiment 2. Of course, the ring processing device may also include one or more mechanisms such as a drilling mechanism and a milling mechanism.

[0115] The milling mechanism can perform milling processing on the ring member 50. The centering clamping mechanism can be installed on the machine tool of the drilling mechanism to center and clamp the ring member 50 so that the drilling mechanism can perform drilling processing on a specific position of the ring member 50.

[0116] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0117] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A centering clamping mechanism for centering and clamping a ring, characterized in that: It comprises a mounting frame, a driving member, a transmission unit and at least three groups of clamping units; the at least three groups of clamping units are evenly distributed and installed in the circumferential direction of the mounting frame; the transmission unit is connected between the driving member and the at least three groups of clamping units; The transmission unit includes a movable seat and at least three swinging members, and the at least three swinging members are rotatably connected with the at least three groups of clamping units in a one-to-one correspondence; the swinging member includes a connecting portion, a first swinging portion and a second swinging portion, the first swinging portion and the second swinging portion are arranged on both sides of the connecting portion, the connecting portion is rotatably mounted on the mounting frame, one end of the first swinging portion close to the movable seat is rotatably connected with a rolling member, and the rolling member is rotatably connected to the movable seat, and the second swinging portion is rotatably connected to the clamping unit; A limiting groove is arranged around the circumference of the movable seat, and the limiting groove is arranged coaxially with the at least three groups of clamping units; the rolling element is limited in the limiting groove; The driving member is used to drive the movable seat to move, so as to drive the at least three swing members to move synchronously, and then the at least three swing members drive the at least three groups of clamping units to clamp or release the ring member in a centered manner; The clamping unit includes a mounting seat, a sliding frame and a chuck, the sliding frame is slidably mounted in the mounting seat, and the sliding direction of the sliding frame is arranged along the radial direction of the mounting frame; the chuck is arranged on the side of the sliding frame away from the mounting seat; the sliding frame is rotatably connected to the swing member of the transmission unit, and the transmission unit is used to drive the sliding frame to slide along the radial direction of the mounting frame to drive the chuck to center and clamp or release the ring.

2. The centering clamping mechanism according to claim 1, characterized in that: The clamping unit further comprises a driving assembly and a transmission rod disposed in the sliding frame, wherein the transmission rod is respectively connected to the driving assembly and the clamping head in a transmission manner; The driving assembly is used to drive the transmission rod to move, so as to drive the clamp to move relative to the sliding frame. The clamp is arranged along the radial direction of the mounting frame along the moving direction of the sliding frame.

3. The centering clamping mechanism according to claim 2, characterized in that: The driving assembly includes a stepping motor, and the transmission rod is threadedly connected to the chuck; in the circumferential direction of the transmission rod, the sliding frame is used to limit the rotation of the chuck; The stepper motor is used to drive the transmission rod to rotate, so as to drive the clamp to move along the sliding frame.

4. The centering clamping mechanism according to claim 3, characterized in that: The chuck is transmission-connected to the transmission rod via a transmission sleeve, the transmission sleeve is thread-matched with the transmission rod, and the chuck is fixedly connected to the transmission sleeve.

5. The centering clamping mechanism according to claim 4, characterized in that: The transmission sleeve is a half-nut.

6. The centering clamping mechanism according to claim 1, characterized in that: A copper plate is arranged around the outer side of the clamp, and the copper plate is used to reduce the collision of the clamp on the ring.

7. A ring processing equipment, characterized in that: It comprises the centering clamping mechanism as described in any one of claims 1 to 6.

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