Clamping and positioning device of annular part and machining system of crack arrest groove

Abstract

The utility model relates to the field of machining equipment, in particular to a clamping and positioning device of an annular part and a machining system of a crack arrest groove, the clamping and positioning device comprises a rotating mechanism and a clamping mechanism, the rotating mechanism is connected with the clamping mechanism, and a rotating shaft of the rotating mechanism coincides with a rotating shaft of the clamping mechanism. The slewing mechanism can drive the clamping mechanism to rotate around the rotating shaft; the clamping mechanism comprises a plurality of telescopic rods which are arranged in the circumferential direction of the rotating shaft, the cantilever ends of the telescopic rods are provided with clamping plates matched with the outer wall of the annular part, and the telescopic rods can stretch out and draw back in the radial direction of the rotating shaft. The annular part is clamped and fixed through the multiple telescopic rods distributed in the circumferential direction and the clamping plates, the rotary mechanism drives the annular part to rotate around the center axis of the annular part, the rotation angle and direction can be controlled through the rotary mechanism, the positions of grooving and drilling can be accurately positioned through program control of the rotary mechanism, and the machining efficiency and quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of machining equipment, and in particular to a clamping and positioning device for annular parts and a machining system for anti-crack grooves. Background Technology

[0002] Currently, manual grinding is commonly used in the processing of anti-crack grooves for annular composite parts. This requires first marking lines on the part to be processed to determine the positions of holes and grooves, and then manually drilling and grooving. However, the positioning accuracy through manual marking is low, and it relies on visual determination by the operator. When there is a deviation in the visual positioning, it is easy to cause uneven distribution of holes and grooves on the circumference of the annular part, and large deviations between the center of the hole and the groove at the same position. When the operating force is not properly controlled, the quality of the holes and grooves produced is poor, and the manual drilling and grooving method is inefficient. Utility Model Content

[0003] The purpose of this invention is to overcome the technical problems of large errors and low efficiency caused by the manual positioning method for drilling and grooving in the prior art, and to provide a clamping and positioning device for annular parts and a processing system for anti-crack grooves.

[0004] In a first aspect, the present invention provides a clamping and positioning device for annular parts, comprising a rotary mechanism and a clamping mechanism, wherein the rotary mechanism is connected to the clamping mechanism, the rotation axis of the rotary mechanism coincides with the rotation axis of the clamping mechanism, and the rotary mechanism can drive the clamping mechanism to rotate around the rotation axis; the clamping mechanism includes a plurality of telescopic rods, the plurality of telescopic rods being arranged circumferentially along the rotation axis, the cantilever end of the telescopic rod being provided with a clamping plate matching the outer wall of the annular part, and the telescopic rod being capable of radial extension and retraction along the rotation axis.

[0005] This application employs multiple circumferentially arranged telescopic rods and clamping plates to clamp and fix annular parts. Specifically, the annular part can be placed at the center of the clamping mechanism, so that the central axis of the annular part coincides with the rotation axis of the clamping mechanism. After the multiple telescopic rods are retracted, the clamping plates can be attached to the outer wall of the annular part, thereby keeping the annular part fixed in the radial direction. During processing, a rotary mechanism can be used to drive the clamping mechanism and the annular part to rotate. Since the rotation axes of the rotary mechanism, the clamping mechanism, and the annular part coincide, the annular part can rotate around its central axis when rotating. Its rotation angle and direction can be controlled by the rotary mechanism. The positions of grooving and drilling can be precisely positioned by the rotary mechanism through program control, which improves processing efficiency and quality.

[0006] Preferably, the clamping mechanism further includes a drive disk and a driver, the rotation axis of the drive disk coincides with the rotation axis of the clamping mechanism, the driver is connected to the drive disk, the drive disk is connected to a plurality of the telescopic rods, and the driver can drive the drive disk to rotate to control the extension and retraction of the telescopic rods.

[0007] Preferably, the drive disk has a plurality of sliding grooves arranged circumferentially along the rotation axis of the drive disk, and each of the telescopic rods has a slider located in the sliding groove and corresponding to one of the sliding grooves.

[0008] Preferably, the circumferential edge of the drive disk has a plurality of first inclined surfaces, and the telescopic rod has a second inclined surface that cooperates with the first inclined surfaces; an elastic element is provided between two telescopic rods that are arranged radially opposite to each other along the drive disk.

[0009] Preferably, the clamping mechanism further includes a plurality of turntables, the turntables being disposed between two adjacent telescopic rods; the driver includes a drive push rod, one end of which is rotatably connected to the turntable, and the other end of which is rotatably connected to the edge of the drive disk.

[0010] Preferably, the driver includes a drive motor, which is disposed between the drive disk and the rotary mechanism, and the output shaft of the drive motor is connected to the rotation shaft of the drive disk.

[0011] Preferably, a telescopic cylinder is provided at one end of the telescopic rod near the rotation axis of the clamping mechanism.

[0012] Preferably, a clamping device is provided at one end of the telescopic rod near the clamping plate.

[0013] In a second aspect, the present invention provides a processing system for annular part anti-crack grooves, including a grooving mechanism and a clamping and positioning device for the annular part as described above, wherein the grooving mechanism is disposed on one side of the clamping mechanism.

[0014] Preferably, it further includes a drilling mechanism, which is disposed on one side of the grooving mechanism.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model provides a clamping and positioning device for annular parts and a machining system for anti-crack grooves. Multiple circumferentially arranged telescopic rods and clamping plates are used to clamp and fix the annular part. The annular part can be placed at the center of the clamping mechanism, so that the central axis of the annular part coincides with the rotation axis of the clamping mechanism. Retracting the multiple telescopic rods allows the clamping plates to adhere to the outer wall of the annular part, thus keeping the annular part radially fixed. During machining, a rotary mechanism can be used to drive the clamping mechanism and the annular part to rotate. Since the rotation axes of the rotary mechanism, clamping mechanism, and annular part coincide, the annular part can rotate around its central axis. Its rotation angle and direction can be controlled by the rotary mechanism. The positions for grooving and drilling can be precisely positioned by the rotary mechanism through program control, improving machining efficiency and quality. Attached image description:

[0017] Figure 1 This is a three-dimensional schematic diagram of the machining system for the annular part anti-crack groove of this utility model.

[0018] Figure 2 This is a top view schematic diagram of the machining system for the annular part anti-crack groove of this utility model.

[0019] Figure 3 This is a front view schematic diagram of the machining system for the annular part anti-crack groove of this utility model.

[0020] Figure 4 This is a schematic diagram of the first possible cooperation structure between the drive disc and the telescopic rod in the clamping and positioning device for the ring-shaped part of this utility model.

[0021] Figure 5 This is a schematic diagram of the second type of cooperation structure between the drive disk and the telescopic rod in the clamping and positioning device for the ring-shaped part of this utility model.

[0022] Figure 6 This is a diagram showing the extended state of the telescopic rod in the second type of mating structure between the drive disc and the telescopic rod.

[0023] Marked in the image:

[0024] 1. Rotary mechanism; 2. Clamping mechanism; 21. Telescopic rod; 211. Slider; 212. Second inclined plane; 22. Clamping plate; 23. Drive disk; 231. Slide groove; 232. First inclined plane; 24. Driver; 25. Elastic element; 26. Turntable; 27. Clamping device; 3. Grooving mechanism; 4. Drilling mechanism; 5. Operating table. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0026] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0028] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0029] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0030] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0031] Example 1

[0032] This embodiment provides a clamping and positioning device for annular parts.

[0033] Figure 1 This is a three-dimensional schematic diagram of the machining system for the annular part anti-crack groove of this utility model; Figure 2 This is a top view schematic diagram of the machining system for the annular part anti-crack groove of this utility model; Figure 3 This is a front view schematic diagram of the machining system for the annular part anti-crack groove of this utility model; Figure 4 This is a schematic diagram of the first possible cooperation structure between the drive disk and the telescopic rod in the clamping and positioning device for the ring-shaped part of this utility model. Figure 5 This is a schematic diagram of the second type of cooperation structure between the drive disk and the telescopic rod in the clamping and positioning device for the ring-shaped part of this utility model. Figure 6 This is a diagram showing the extended state of the telescopic rod in the second type of mating structure between the drive disc and the telescopic rod.

[0034] like Figures 1 to 6 As shown in the figure, the clamping and positioning device for the annular part described in this embodiment includes a rotary mechanism 1 and a clamping mechanism 2. The rotary mechanism 1 is connected to the clamping mechanism 2, and the rotation axis of the rotary mechanism 1 coincides with the rotation axis of the clamping mechanism 2. The rotary mechanism 1 can drive the clamping mechanism 2 to rotate around the rotation axis. The clamping mechanism 2 includes multiple telescopic rods 21, which are arranged circumferentially along the rotation axis. The cantilever end of the telescopic rod 21 is provided with a clamping plate 22 that matches the outer wall of the annular part. The telescopic rod 21 can extend and retract radially along the rotation axis. Here, the rotary mechanism 1 can be... The rotating table 26 is driven by a motor. The clamping mechanism 2 can be fixed on the rotating table 26 and rotate together with the rotating table 26. Multiple telescopic rods 21 are arranged circumferentially to form a structure similar to helicopter rotor blades. The number of telescopic rods 21 can be arbitrarily selected. If there are 4 telescopic rods 21, the 4 telescopic rods 21 can be connected to form a cross shape. If there are 8 telescopic rods 21, the 8 telescopic rods 21 can be connected to form a rice-shaped structure. The number of telescopic rods 21 shown in the figure is 6. The 6 telescopic rods 21 are evenly arranged circumferentially.

[0035] The cantilever end of the telescopic rod 21 is provided with a clamping plate 22. The shape of the clamping plate 22 can be formed into an arc shape to match the outer wall of the annular part. The clamping plates 22 on each telescopic rod 21 can be located on the same circumference. The clamping plates 22 can move radially along the clamping mechanism 2 as the telescopic rod 21 extends and retracts. When clamping the annular part, the telescopic rod 21 can be extended first so that the distance between the two radially opposite clamping plates 22 is greater than the outer diameter of the annular part. Then, the annular part is placed in the clamping mechanism 2, that is, within the circumference formed by the connection of each clamping plate 22. Then, the telescopic rod 21 is retracted until each clamping plate 22 is abutted. On the outer wall of the annular part, the annular part is fixed in the clamping mechanism 2. When processing the annular part, the rotation of the rotary mechanism 1 can be controlled to rotate, thereby driving the clamping mechanism 2 and the annular part fixed in the clamping mechanism 2 to rotate together. When rotating, the rotation axes of the rotary mechanism 1, the clamping mechanism 2 and the annular part are collinear. The processing device set next to the clamping and positioning device, such as the drilling mechanism 4 and the grooving mechanism 3, can be used to process the anti-crack groove on the annular part. The specific processing position of the anti-crack groove on the annular part can be accurately positioned by controlling the rotation direction and rotation angle of the annular part by the rotary mechanism 1.

[0036] In this embodiment, the telescopic rod 21 can be extended or retracted in various ways. The first way is to set a driving mechanism at the center of the clamping mechanism 2 to control the extension and retraction of multiple telescopic rods 21 at the same time. For example, a driving disk 23 and a driver 24 connected to the driving disk 23 can be set at the center of the clamping mechanism 2. The rotation axis of the driving disk 23 can be collinear with the rotation axis of the clamping mechanism 2. The driving disk 23 is connected to the telescopic rod 21. The extension and retraction of the telescopic rod 21 can be controlled by controlling the driver 24 to drive the driving disk 23 to rotate.

[0037] Specifically, the connection structure between the drive disc 23 and the telescopic rod 21 can also take various forms, for example, such as... Figure 4 The diagram shows a first type of mating structure between the drive disc 23 and the telescopic rod 21. The drive disc 23 may have multiple grooves 231, which can be arranged circumferentially along the drive disc 23. The grooves 231 can extend through both the upper and lower sides of the drive disc 23, or they can be formed as non-through grooves only on the side of the drive disc 23 facing the telescopic rod 21. A slider 211 corresponding to the groove 231 can be installed on the telescopic rod 21. The slider 211 can be located at the end away from the cantilever end of the telescopic rod 21. The slider 211 extends into the groove 231 and engages with it. When the drive disc 23 rotates, the slider 211 can slide along the groove 231. Because the distances between the two ends of the groove 231 and the rotation axis of the drive disc 23 are different, when the slider 211 slides in the groove 231, it can drive the telescopic rod 21 to move radially along the clamping mechanism 2, thereby realizing the telescopic action of the telescopic rod 21. Figure 2 and Figure 4 As shown, when the drive disc 23 rotates clockwise, the telescopic rod 21 can extend radially; conversely, when the drive disc 23 rotates counterclockwise, the telescopic rod 21 can retract radially.

[0038] For the second type of mating structure between the drive disc 23 and the telescopic rod 21, such as Figure 5 As shown, a first inclined surface 232 is formed on the circumferential edge of the drive disk 23 (that is, the outer circular surface of the drive disk 23), and a second inclined surface 212 is formed on the telescopic rod 21. The first inclined surface 232 can cooperate with the second inclined surface 212. An elastic element 25 is provided between the two telescopic rods 21 that are arranged radially opposite to each other along the drive disk 23. Here, the elastic element 25 can be a spring. The spring can pull the two telescopic rods 21 to generate a tendency to move towards each other. When the drive disk 23 rotates counterclockwise, the first inclined surface 232 can push the second inclined surface 212 to push the telescopic rod 21 out radially and extend it. That is to say, the two radially opposite telescopic rods 21 can move in opposite directions, and at the same time, the elastic force of the elastic element 25 can be overcome to stretch the elastic element 25. When the drive disk 23 rotates clockwise, the second inclined surface 212 can slide in the opposite direction along the first inclined surface 232, and the telescopic rod 21 can retract radially under the action of the elastic element 25.

[0039] In this embodiment, the driver 24 can have various structural forms. For example, the driver 24 shown in the figure can specifically be a drive push rod, i.e., a cylinder or hydraulic cylinder. One end of the drive push rod can be hinged to the drive disk 23, specifically at the edge of the drive disk 23. The other end of the drive push rod can be hinged to a turntable 26 set between two adjacent telescopic rods 21. By controlling the extension and retraction of the drive push rod, the drive disk 23 can be pushed to rotate within a certain angle range, thereby controlling the extension and retraction of the telescopic rods 21. Alternatively, the driver 24 can also be a drive motor (not shown in the figure). The drive motor can be installed below the drive disk 23, i.e., between the drive disk 23 and the rotary mechanism 1. The output shaft of the drive motor can be connected to the rotation shaft of the drive disk 23. The drive motor can control the rotation of the drive disk 23, thereby controlling the extension and retraction of the telescopic rods 21. Here, the drive motor can preferably be a low-speed motor with a slower rotation speed, or a reduction gear transmission can be used to reduce the rotation speed of the drive disk 23 to ensure the stability and safety of the clamping process. This utility model does not specifically limit the form and installation position of the driver 24.

[0040] In this embodiment, besides the first method described above where a drive disk 23 and a driver 24 are set at the center of the clamping mechanism 2, other structural forms are also possible for driving the telescopic rod 21 to extend and retract. For example, a telescopic cylinder (not shown in the figure) can be set on each telescopic rod 21 to control the extension and retraction of the telescopic rod 21. Specifically, the telescopic cylinder can be a pneumatic cylinder or a hydraulic cylinder, and can be connected to the other end of the telescopic rod 21 away from the cantilever end, that is, the end close to the rotation axis of the clamping mechanism 2. The telescopic cylinders on each telescopic rod 21 can be controlled simultaneously to synchronously control the extension and retraction of each telescopic rod 21, or one or more telescopic cylinders can be controlled separately to adjust the extension and retraction of the corresponding telescopic rod 21 individually. This utility model does not specifically limit the method and structure of driving the telescopic rod 21 to extend and retract.

[0041] Optionally, a clamping device 27 is provided at one end of the telescopic rod 21 near the clamping plate 22. The clamping device 27 may include a bracket and a pressure plate. The bracket may be formed as a cantilever beam structure. The pressure plate is installed below the cantilever beam and can move up and down. When the pressure plate moves up, the annular part can be placed below the pressure plate. When the pressure plate moves down, the annular part can be pressed tightly, thus fixing the annular part in the vertical direction. The clamping device 27 may be a pneumatic clamping device, such as a 90-degree angle downward pressing cylinder. This utility model does not specifically limit the specific type of clamping device 27.

[0042] Example 2

[0043] This embodiment provides a machining system for anti-crack grooves in annular parts.

[0044] The processing system for the anti-crack groove of the annular part described in this embodiment may include a grooving mechanism 3 and a clamping and positioning device for the annular part as described in Embodiment 1. The grooving mechanism 3 is disposed on one side of the clamping mechanism 2. The grooving mechanism 3 can cut grooves on the side wall of the annular part to process the anti-crack groove.

[0045] Optionally, the processing system for the crack-preventing groove of the annular part may also include a drilling mechanism 4, which may be set on one side of the grooving mechanism 3. Specifically, two drilling mechanisms 4 may be set to simultaneously drill the annular part. Of course, the number of drilling mechanisms 4 and grooving mechanisms 3 may be arbitrarily set according to the actual processing requirements, and this utility model does not make any specific limitation in this regard.

[0046] Alternatively, the processing system for the crack-resistant groove of the annular part may also include an operating table 5, on which the clamping and positioning device, the grooving mechanism 3, and the drilling mechanism 4 of the annular part can all be installed.

[0047] It should be noted that the clamping and positioning device for the annular part described in this embodiment is the same as the clamping and positioning device for the annular part described in Embodiment 1, and will not be described in detail in this embodiment.

[0048] In summary, the clamping and positioning device for annular parts and the processing system for anti-crack grooves of this utility model can clamp and fix the annular parts by using multiple circumferentially arranged telescopic rods and clamping plates. The annular parts can be placed at the center of the clamping mechanism, so that the central axis of the annular parts coincides with the rotation axis of the clamping mechanism. After the multiple telescopic rods are retracted, the clamping plates can be attached to the outer wall of the annular parts, thereby keeping the annular parts fixed in the radial direction. During processing, the rotary mechanism can be used to drive the clamping mechanism and the annular parts to rotate. Since the rotation axes of the rotary mechanism, the clamping mechanism and the annular parts coincide, the annular parts can rotate around their central axis when rotating. The rotation angle and direction can be controlled by the rotary mechanism. The positions of grooving and drilling can be precisely positioned by the rotary mechanism through program control, which improves processing efficiency and quality.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A clamping and positioning device for annular parts, characterized in that, It includes a rotary mechanism (1) and a clamping mechanism (2). The rotary mechanism (1) is connected to the clamping mechanism (2). The rotation axis of the rotary mechanism (1) coincides with the rotation axis of the clamping mechanism (2). The rotary mechanism (1) can drive the clamping mechanism (2) to rotate around the rotation axis. The clamping mechanism (2) includes a drive disk (23) and a plurality of telescopic rods (21). The plurality of telescopic rods (21) are arranged circumferentially along the rotation axis. The cantilever end of the telescopic rod (21) is provided with a clamping plate (22) that matches the outer wall of the annular part. The telescopic rod (21) can extend and retract radially along the rotation axis. The drive disk (23) is connected to the plurality of telescopic rods (21). The rotation axis of the drive disk (23) coincides with the rotation axis of the clamping mechanism (2). The circumferential edge of the drive disc (23) is formed with a plurality of first inclined surfaces (232), and the telescopic rod (21) is formed with a second inclined surface (212) that cooperates with the first inclined surface (232); an elastic element (25) is provided between two telescopic rods (21) arranged radially opposite to each other along the drive disc (23). The first inclined plane (232) can push the second inclined plane (212) to extend the telescopic rod (21), and the elastic element (25) can retract the telescopic rod (21).

2. The clamping and positioning device for annular parts according to claim 1, characterized in that, The clamping mechanism (2) further includes a driver (24), which is connected to the drive disk (23). The driver (24) can drive the drive disk (23) to rotate in order to control the extension and retraction of the telescopic rod (21).

3. The clamping and positioning device for annular parts according to claim 2, characterized in that, The clamping mechanism (2) further includes several turntables (26), which are arranged between two adjacent telescopic rods (21); the driver (24) includes a drive push rod, one end of which is rotatably connected to the turntable (26), and the other end of which is rotatably connected to the edge of the drive disk (23).

4. The clamping and positioning device for annular parts according to claim 2, characterized in that, The driver (24) includes a drive motor, which is located between the drive disk (23) and the rotary mechanism (1), and the output shaft of the drive motor is connected to the rotation shaft of the drive disk (23).

5. The clamping and positioning device for annular parts according to claim 1, characterized in that, The telescopic rod (21) has a telescopic cylinder at one end near the rotating shaft of the clamping mechanism (2).

6. The clamping and positioning device for annular parts according to any one of claims 1 to 5, characterized in that, A clamping device (27) is provided at one end of the telescopic rod (21) near the clamping plate (22).

7. A machining system for annular part anti-crack grooves, characterized in that, The device includes a grooving mechanism (3) and a clamping and positioning device for an annular part as described in any one of claims 1 to 6, wherein the grooving mechanism (3) is disposed on one side of the clamping mechanism (2).

8. The machining system for the annular part anti-crack groove according to claim 7, characterized in that, It also includes a drilling mechanism (4), which is disposed on one side of the grooving mechanism (3).

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