Flexible mechanism and flexible collet having the same

Abstract

The application discloses a flexible mechanism and a flexible chuck with the same, which comprises a connecting piece, a first adjusting piece, a second adjusting piece, a roller assembly and a locking assembly. The side surface of the connecting piece is provided with a first rolling groove in the X-axis direction. The side surface of one end of the first adjusting piece close to the connecting piece is provided with a second rolling groove in the X-axis direction, and the side surface of the other end of the first adjusting piece away from the connecting piece is provided with a third rolling groove in the Y-axis direction. The side surface of the second adjusting piece is provided with a fourth rolling groove in the Y-axis direction. The roller assembly is provided with at least two groups and comprises a first roller group and a second roller group. The first roller group is limited between the first rolling groove and the second rolling groove, and the second roller group is limited between the third rolling groove and the fourth rolling groove. The flexible mechanism and the flexible chuck with the same can realize variable-angle power transmission and have high axial transmission accuracy.

Description

Technical Field

[0001] This application relates to a transmission mechanism, and more particularly to a flexible mechanism and a flexible chuck having the same. Background Technology

[0002] In related technologies, a universal joint, also known as a universal connector, is a mechanical component that enables variable-angle power transmission. It is used in locations where the direction of the drive shaft needs to be changed, and it is the "joint" component of the universal joint transmission device in automotive drive systems. In machine tool processing, universal joints are also frequently used to connect the chuck to the rotary drive component, thereby reducing wear on the chuck caused by workpiece runout during machining. However, due to the inherent clearances in the universal joint structure, axial misalignment of the workpiece can occur during machining, thus affecting the machining accuracy. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a flexible mechanism that can achieve variable-angle power transmission while also having high axial transmission accuracy.

[0004] The present invention also proposes a flexible chuck having the above-mentioned flexible mechanism.

[0005] A flexible mechanism according to a first aspect of the present invention includes: a connector, a first adjusting member, a second adjusting member, a roller assembly, and a locking assembly; the connector has a first groove formed on its side along the X-axis; the first adjusting member is disposed on one side of the connector along the Z-axis, the side of the first adjusting member near the connector has a second groove formed on its side along the X-axis, and the side of the first adjusting member away from the connector has a third groove formed on its side along the Y-axis; the second adjusting member is disposed on the side of the first adjusting member away from the connector along the Z-axis, and the side of the second adjusting member has a fourth groove formed on its side along the Y-axis, the X-axis, the Y-axis, and the Z-axis being perpendicular to each other; the roller assembly has at least two sets and includes a first... The system comprises a roller group and a second roller group. The first roller group includes a plurality of first rollers arranged sequentially along the X-axis and confined between the first and second roller grooves, allowing the first adjusting member and the connecting member to slide relative to each other along the X-axis. The second roller group includes a plurality of second rollers arranged sequentially along the Y-axis and confined between the third and fourth roller grooves, allowing the first adjusting member and the second adjusting member to slide relative to each other along the Y-axis. A locking assembly is used to limit the distance of relative movement between the connecting member and the first adjusting member along the X-axis and to limit the distance of relative movement between the first adjusting member and the second adjusting member along the Y-axis.

[0006] The flexible mechanism according to embodiments of the present invention has at least the following beneficial effects: the flexible mechanism includes a connector, a first adjusting member, a second adjusting member, a roller assembly, and a locking assembly; the connector, the first adjusting member, and the second adjusting member are sequentially arranged along the Z-axis direction; the roller assembly includes a first roller group and a second roller group; the first roller group contains a plurality of first rollers arranged along the X-axis direction and limited between a first groove opened on the side of the connector along the X-axis direction and a second groove opened on the side of the first adjusting member along the X-axis direction, thereby allowing the connector and the first adjusting member to slide relative to each other along the X-axis direction via the first rollers; and since the first rollers are simultaneously limited by the first and second grooves, the relative movement of the connector and the first adjusting member along the Z-axis is also limited; the second roller group contains a plurality of second rollers arranged sequentially along the Y-axis direction and limited between a third groove opened on the side of the first adjusting member and a fourth groove opened on the side of the second adjusting member, thereby allowing the first adjusting member and the second adjusting member to slide relative to each other along the Y-axis direction via the second rollers, and Furthermore, since the second roller is simultaneously positioned within the third and fourth grooves, the relative movement of the second and first adjusting members along the Z-axis is also limited. Additionally, the locking assembly limits the relative movement of the connecting member and the first adjusting member along the X-axis to prevent them from disengaging. The locking assembly also limits the relative movement of the first and second adjusting members along the Y-axis, preventing them from disengaging. Therefore, the connecting member and the first adjusting member can slide relative to each other along the X-axis, and the first and second adjusting members can slide relative to each other along the Y-axis. Thus, during the transmission of power changing the axial direction via the connecting member, the first adjusting member, and the second adjusting member, adaptive adjustment of different axes can be achieved. This also avoids axial offset errors caused by the structural clearance of the universal joint. Consequently, the flexible mechanism in this application can achieve variable-angle power transmission while also possessing high axial transmission accuracy.

[0007] According to some embodiments of the present invention, the first roller and the second roller are both balls, and the first groove, the second groove, the third groove and the fourth groove are all arc-shaped grooves adapted to the balls.

[0008] According to some embodiments of the present invention, the locking assembly includes a locking sleeve and a locking member. The locking sleeve is sleeved over the connector, the first adjusting member and the second adjusting member. The locking member is used to connect any one of the connector, the first adjusting member and the second adjusting member to the locking sleeve. The locking sleeve covers the slots at both ends of the first roller groove and the second roller groove, as well as the slots at both ends of the third roller groove and the fourth roller groove.

[0009] According to some embodiments of the present invention, the first adjusting member has two first protrusions extending toward the connecting member on both sides of the first adjusting member near the connecting member in the Y-axis direction. The second roller groove has two grooves and is located on opposite sides of the two first protrusions. The connecting member has a first insertion part near the first adjusting member and can be inserted between the two first protrusions along the X-axis direction. The first roller groove has two grooves and is located on two opposite sides of the first insertion part in the Y-axis direction. The first adjusting member has two second protrusions extending toward the second adjusting member on both sides of the first adjusting member in the X-axis direction. The third roller groove has two grooves and is located on opposite sides of the two second protrusions. The second adjusting member has a second insertion part near the first adjusting member and can be inserted between the two second protrusions along the Y-axis direction. The fourth roller groove has two grooves and is located on two opposite sides of the second insertion part in the X-axis direction.

[0010] According to some embodiments of the present invention, the first adjusting member further includes an elastic portion, wherein the first protrusion and the second protrusion are respectively disposed at both ends of the elastic portion, and the sidewall of the elastic portion near the end of the first protrusion is provided with a first elastic groove extending along the X-axis on both sides of the Y-axis direction. The first elastic groove is used to provide space required for the first protrusion to undergo elastic deformation under the support of the ball. The sidewall of the elastic portion near the end of the second protrusion is provided with a second elastic groove extending along the Y-axis on both sides of the X-axis direction. The second elastic groove is used to provide space required for the second protrusion to undergo elastic deformation under the support of the ball.

[0011] According to some embodiments of the present invention, the locking assembly further includes a plurality of clamping members, which are connected to the locking sleeve and are used to clamp the first protrusion so that the groove surfaces of the second roller groove and the first roller groove are brought close to each other, and to clamp the second protrusion so that the groove surfaces of the third roller groove and the fourth roller groove are brought close to each other.

[0012] According to some embodiments of the present invention, the middle portion of the connector, the first adjusting member, and the second adjusting member is provided with a through hole extending along the Z-axis direction.

[0013] According to a second aspect embodiment of the present invention, the flexible chuck includes an elastic chuck and a flexible mechanism according to the first aspect embodiment of the present invention described above. The elastic chuck is connected to the connector and is used to cooperate with the connector to clamp or release a workpiece.

[0014] According to a second aspect embodiment of the present invention, the flexible chuck has at least the following beneficial effects: in addition to the flexible mechanism in the first aspect embodiment described above, the flexible chuck also includes an elastic chuck, the elastic chuck is connected to a connecting member, and can cooperate with the connecting member to clamp or release the workpiece; and when the workpiece jumps during processing, due to the presence of the flexible mechanism, the wear of the workpiece on the elastic chuck and the damage to the entire chuck can be reduced.

[0015] According to some embodiments of the present invention, a first driving member is further included, the output end of the first driving member being connected to the second adjusting member and used to drive the second adjusting member to rotate along the XY plane, wherein the XY plane is the plane containing the X-axis and the Y-axis.

[0016] According to some embodiments of the present invention, a V-block and a pressure plate are further included. The V-block is disposed on the side of the connector away from the second adjusting member. A V-groove is provided on one side of the V-block for placing the workpiece. The pressure plate is disposed on the side of the V-block where the V-groove is provided and is used to cooperate with the V-block to radially position the workpiece so that the workpiece is always tangent to the V-groove.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a schematic diagram of the structure of one embodiment of the flexible mechanism according to the first aspect of the present invention;

[0020] Figure 2 for Figure 1 The diagram shows the structure of the flexible mechanism after removing the locking assembly and the collet shaft;

[0021] Figure 3 for Figure 1 An exploded view of the flexible mechanism shown in the image after the collet shaft has been removed;

[0022] Figure 4 This is a schematic diagram of the structure of one embodiment of the flexible clamp according to the second aspect of the present invention;

[0023] Figure 5 for Figure 4 A schematic diagram of the flexible clamp from another perspective;

[0024] Figure 6 for Figure 5 The cross-sectional view AA of the flexible chuck shown.

[0025] Figure label:

[0026] Connector 100; First insertion part 110; First groove 111; First adjusting part 200; First protrusion 210; Second groove 211; Second protrusion 220; Third groove 221; Elastic part 230; First elastic groove 231; Second elastic groove 232; Threaded hole 233; Second adjusting part 300; Second insertion part 310; Fourth groove 311; First roller group 410; Second roller group 420; Locking assembly 500; Locking sleeve 510; Through hole 520; Pressing hole 530; Elastic chuck 600; First driving part 700; Reducer 800; V-block 900; V-groove 910; Workpiece 1000. Detailed Implementation

[0027] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0028] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0031] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The following is for reference. Figures 1 to 6 This invention describes a flexible mechanism and a flexible gripper having the same as embodiments of the present invention.

[0033] like Figures 1 to 3 As shown, a flexible mechanism according to a first aspect embodiment of the present invention includes: a connector 100, a first adjusting member 200, a second adjusting member 300, a roller assembly, and a locking assembly 500; a first groove 111 is formed on the side of the connector 100 along the X-axis direction; the first adjusting member 200 is disposed on one side of the connector 100 along the Z-axis direction, a second groove 211 is formed on the side of the first adjusting member 200 near the connector 100 along the X-axis direction, and a third groove 221 is formed on the side of the first adjusting member 200 away from the connector 100 along the Y-axis direction; the second adjusting member 300 is disposed on the end of the first adjusting member 200 away from the connector 100 along the Z-axis direction, and a fourth groove 311 is formed on the side of the second adjusting member 300 along the Y-axis direction, the X-axis, Y-axis, and Z-axis being perpendicular to each other; the roller assembly is provided with... There are at least two sets, including a first roller group 410 and a second roller group 420. The first roller group 410 includes a plurality of first rollers arranged sequentially along the X-axis and confined between the first roller groove 111 and the second roller groove 211, so that the first adjusting member 200 and the connecting member 100 can slide relative to each other along the X-axis. The second roller group 420 includes a plurality of second rollers arranged sequentially along the Y-axis and confined between the third roller groove 221 and the fourth roller groove 311, so that the first adjusting member 200 and the second adjusting member 300 can slide relative to each other along the Y-axis. The locking assembly 500 is used to limit the distance of relative movement of the connecting member 100 and the first adjusting member 200 along the X-axis, and to limit the distance of relative movement of the first adjusting member 200 and the second adjusting member 300 along the Y-axis.

[0034] It is understood that the flexible mechanism includes a connector 100, a first adjusting member 200, a second adjusting member 300, a roller assembly, and a locking assembly 500; the connector 100, the first adjusting member 200, and the second adjusting member 300 are arranged sequentially along the Z-axis direction, and the roller assembly includes a first roller group 410 and a second roller group 420. The first roller group 410 contains a plurality of first rollers arranged along the X-axis direction and limited between the first roller groove 111 opened on the side of the connector 100 along the X-axis direction and the second roller groove 211 opened on the side of the first adjusting member 200 along the X-axis direction, thereby making the connector 100 and the first adjusting member 200... The first adjusting member 200 can slide relative to the first roller along the X-axis direction, and since the first roller is simultaneously limited by the first groove 111 and the second groove 211, the relative movement of the connecting member 100 and the first adjusting member 200 along the Z-axis is also limited; the second roller group 420 contains a plurality of second rollers arranged sequentially along the Y-axis direction, and is limited between the third groove 221 opened on the side of the first adjusting member 200 and the fourth groove 311 opened on the side of the second adjusting member 300, thereby allowing the first adjusting member 200 and the second adjusting member 300 to slide relative to each other along the Y-axis direction via the second roller, and since the first roller is simultaneously limited by the first groove 111 and the second groove 211, the relative movement of the connecting member 100 and the first adjusting member 200 along the Z-axis is also limited; The two rollers are simultaneously positioned within the third groove 221 and the fourth groove 311, thus limiting the relative movement of the second adjusting member 300 and the first adjusting member 200 along the Z-axis. Furthermore, the locking assembly 500 limits the relative movement of the connecting member 100 and the first adjusting member 200 along the X-axis to prevent them from disengaging. Simultaneously, the locking assembly 500 also limits the relative movement of the first adjusting member 200 and the second adjusting member 300 along the Y-axis, thus preventing them from disengaging. Therefore... The connector 100 and the first adjusting member 200 can slide relative to each other along the X-axis, and the first adjusting member 200 and the second adjusting member 300 can slide relative to each other along the Y-axis. Thus, in the process of transmitting power that changes the axial direction through the connector 100, the first adjusting member 200 and the second adjusting member 300, the connector 100, the first adjusting member 200 and the second adjusting member 300 can achieve adaptive adjustment of different axes, and at the same time avoid the axial offset error caused by the structural clearance of the universal joint. Therefore, the flexible mechanism in this application can achieve variable angle power transmission while also having high axial transmission accuracy.

[0035] The X-axis, Y-axis, and Z-axis are perpendicular to each other.

[0036] It is understandable that both the first and second rollers are ball bearings, and the first groove 111, second groove 211, third groove 221, and fourth groove 311 are all arc-shaped grooves adapted to fit the ball bearings. For example, as... Figures 2 to 3As shown, in this embodiment, both the first roller and the second roller are ball bearings, which can reduce the phenomenon of jamming during the rolling process. The first groove 111, the second groove 211, the third groove 221 and the fourth groove 311 corresponding to the ball bearings are all arc-shaped grooves adapted to the ball bearings, which can improve the accuracy of the relative sliding of the connecting member 100 and the first adjusting member 200 along the X-axis direction, and improve the accuracy of the relative sliding of the first adjusting member 200 and the second adjusting member 300 along the Y-axis direction, and prevent the relative sliding of the connecting member 100 and the first adjusting member 200 along the Z-axis direction, as well as the relative sliding of the first adjusting member 200 and the second adjusting member 300 along the Z-axis direction.

[0037] It should be understood that, in addition to the use of ball bearings as rollers in this embodiment, in other embodiments, the rollers may also be rolling bodies such as cylinders; in addition, in addition to the use of arc-shaped grooves adapted to ball bearings as first groove 111, second groove 211, third groove 221 and fourth groove 311 in this embodiment, in other embodiments, they may also be trapezoidal grooves or H-shaped grooves, etc.

[0038] Understandably, the locking assembly 500 includes a locking sleeve 510 and a locking member. The locking sleeve 510 is fitted over the connector 100, the first adjusting member 200, and the second adjusting member 300. The locking member is used to connect any one of the connector 100, the first adjusting member 200, and the second adjusting member 300 to the locking sleeve 510. The locking sleeve 510 covers the openings at both ends of the first roller groove 111 and the second roller groove 211, as well as the openings at both ends of the third roller groove 221 and the fourth roller groove 311. For example, as... Figures 1 to 3 As shown, in this embodiment, the locking assembly 500 includes a locking sleeve 510 and a locking member. The locking sleeve 510 is sleeved on the outside of the connector 100, the first adjusting member 200, and the second adjusting member 300. The locking member is used to connect any one of the connector 100, the first adjusting member 200, and the second adjusting member 300 to the locking sleeve 510, thereby limiting the relative sliding distance of the connector 100 and the first adjusting member 200 in the X-axis direction, and also limiting the relative sliding distance of the first adjusting member 200 and the second adjusting member 300 in the Y-axis direction. In addition, the locking sleeve 510 can also block the openings of the first roller groove 111 and the second roller groove 211 to prevent the first roller from sliding out, and block the openings of the third roller groove 221 and the fourth roller groove 311 to prevent the second roller from sliding out.

[0039] It should be understood that in this embodiment, the locking sleeve 510 is provided with a through hole 520, and the first adjusting member 200 is provided with a threaded hole 233 corresponding to the through hole 520. The locking sleeve 510 and the first adjusting member 200 are locked by screws or bolts.

[0040] It should be understood that a protective cover can also be provided over the connector 100, the first adjusting member 200, the second adjusting member 300 and the locking sleeve 510 to prevent dust from entering.

[0041] Understandably, the first adjusting member 200 has two first protrusions 210 extending toward the connecting member 100 on both sides of its end near the connecting member 100 in the Y-axis direction. Two second grooves 211 are provided and are located on opposite sides of the two first protrusions 210. The end of the connecting member 100 near the first adjusting member 200 is a first insertion part 110, which can be inserted between the two first protrusions 210 along the X-axis direction. Two first grooves 111 are provided and are located on two opposite sides of the first insertion part 110 in the Y-axis direction. The first adjusting member 200 has two second protrusions 220 extending toward the second adjusting member 300 on both sides of the first adjusting member 200 in the X-axis direction. The third roller groove 221 has two grooves and is located on the opposite sides of the two second protrusions 220. The second adjusting member 300 has a second insertion part 310 at the end of the second adjusting member 200. The second insertion part 310 can be inserted between the two second protrusions 220 in the Y-axis direction. The fourth roller groove 311 has two grooves and is located on the two opposite sides of the second insertion part 310 in the X-axis direction.

[0042] For example, such as Figures 2 to 3As shown, in this embodiment, the end of the connector 100 near the first adjusting member 200 is a first insertion portion 110. The first insertion portion 110 has a first groove 111 on each of its two opposite sides in the Y-axis direction. The end of the first adjusting member 200 near the connector 100 has first protrusions 210 extending towards the connector 100 on both sides in the Y-axis direction. Two second grooves 211 are provided, located on opposite sides of the two first protrusions 210. The first insertion portion 110 can be inserted between the two first protrusions 210 in the X-axis direction. Two sets of first rollers 410 are provided, located between the two sets of first grooves 111 and second grooves 211, respectively. This allows the connector 100 and the first adjusting member 200 to slide relative to each other in the X-axis direction while also restricting their relative sliding in the Y-axis direction and their relative movement in the Z-axis direction. For sliding: The first adjusting member 200 near the second adjusting member 300 has two second protrusions 220 extending towards the second adjusting member 300 on both sides in the X-axis direction. Two third roller grooves 221 are provided and are located on the opposite sides of the two second protrusions 220 respectively. The second adjusting member 300 near the first adjusting member 200 is a second insertion part 310. The second insertion part 310 has a fourth roller groove 311 on both sides in the X-axis direction. The second insertion part 310 can be inserted between the two second protrusions 220 in the Y-axis direction. The second roller group 420 has two sets located between the two sets of third roller grooves 221 and fourth roller grooves 311 respectively. Thus, while enabling the first adjusting member 200 and the second adjusting member 300 to slide relative to each other in the Y-axis direction, it can also restrict the relative sliding of the second adjusting member 300 and the first adjusting member 200 in the X-axis direction and in the Z-axis direction.

[0043] It is understood that the first adjusting member 200 also includes an elastic part 230. The first protrusion 210 and the second protrusion 220 are respectively disposed at both ends of the elastic part 230. The side wall of the elastic part 230 near the end of the first protrusion 210 is provided with a first elastic groove 231 extending in the X-axis direction on both sides in the Y-axis direction. The first elastic groove 231 is used to provide the space required for the first protrusion 210 to undergo elastic deformation under the support of the ball. The side wall of the elastic part 230 near the end of the second protrusion 220 is provided with a second elastic groove 232 extending in the Y-axis direction on both sides in the X-axis direction. The second elastic groove 232 is used to provide the space required for the second protrusion 220 to undergo elastic deformation under the support of the ball. For example, as shown in Figures 1-2, in this embodiment, the first adjusting member 200 further includes an elastic portion 230 located between the first protrusion 210 and the second protrusion 220. The sidewall of the elastic portion 230 is provided with a first elastic groove 231 extending along the X-axis direction. Thus, when the second rolling groove 211 has a negative tolerance, causing the first roller group 410 to be squeezed too tightly, the elastic portion 230 can deform in the first elastic groove 231 after being squeezed by the ball, thereby ensuring the rolling of the first roller group 410. Similarly, a second elastic groove 232 is also provided in the sidewall of the elastic member along the Y-axis direction. Thus, when the third rolling groove 221 has a negative tolerance, causing the second roller group 420 to be squeezed too tightly, the elastic portion 230 can deform in the second elastic groove 232 after being squeezed by the ball, thereby ensuring the rolling of the second roller group 420.

[0044] Specifically, the first elastic groove 231 has two grooves, which are located on two opposite sides of the elastic part 230 near the first protrusion 210 in the Y-axis direction. The second elastic groove 232 has two grooves, which are located on two opposite sides of the elastic part 230 near the second protrusion 220 in the X-axis direction.

[0045] Understandably, the locking assembly 500 also includes multiple clamping members connected to the locking sleeve 510 and used to clamp the first protrusion 210 to bring the groove surfaces of the second groove 211 and the first groove 111 closer together, and to clamp the second protrusion 220 to bring the groove surfaces of the third groove 221 and the fourth groove 311 closer together. For example, as Figures 2 to 3As shown, in this embodiment, the locking assembly 500 further includes multiple clamping members. When the gap between the first roller groove 111 and the second roller groove 211 is too large, or the machined second roller groove 211 has a positive tolerance, the clamping members press the first protrusion 210, thereby bringing the groove surfaces of the first roller groove 111 and the second roller groove 211 closer together. This allows the first roller assembly 410 to fit tightly against the first roller groove 111 and the second roller groove 211, ensuring that the connecting member 100 and the first adjusting member 200 slide relative to each other in the X-axis direction through the first roller assembly 410. Similarly, when the gap between the third roller groove 221 and the fourth roller groove 311 is too large, or the machined third roller groove 221 has a positive tolerance, the clamping members press the second protrusion 220, thereby bringing the groove surfaces of the third roller groove 221 and the fourth roller groove 311 closer together. This allows the second roller assembly 420 to fit tightly against the third roller groove 221 and the fourth roller groove 311.

[0046] It is understandable that the connecting member 100, the first adjusting member 200, and the second adjusting member 300 all have through holes extending along the Z-axis in their middle portions. For example, as shown... Figure 3 As shown, in this embodiment, the two ends of the flexible mechanism along the Z-axis are a connector 100 and a second adjusting member 300, respectively. Each of the connector 100, the first adjusting member 200, and the second adjusting member 300 has a through hole along the Z-axis in its middle portion. This allows components, such as an elastic clamp 600, to pass through the connector 100, the first adjusting member 200, and the second adjusting member 300. One end of the elastic clamp 600 protrudes from the connector 100 away from the second adjusting member 300, and the other end of the elastic clamp 600 protrudes from the second adjusting member 300 away from the connector 100. It can be connected to a second driving member, which can drive the elastic clamp 600 to move along the Z-axis, thereby enabling the elastic clamp 600 to cooperate with the connector 100 under the drive of the second driving member to open and close.

[0047] It should be understood that this flexible mechanism also includes a collet shaft fixed to the connector 100. The collet shaft passes through the connector 100, the first adjusting member 200 and the second adjusting member 300, and its two ends are exposed in the connector 100 and the second adjusting member 300, respectively. The collet shaft is hollow along the Z-axis direction, and the elastic chuck 600 passes through the collet shaft, so that it can open or close with the cooperation of the collet shaft to release or clamp the workpiece.

[0048] In some embodiments, the collet shaft and the connector 100 can be made as one piece, and the collet shaft includes two parts, which are located at both ends of the connector 100 respectively.

[0049] like Figures 4 to 6As shown, according to a first aspect embodiment of the present invention, the flexible chuck includes an elastic chuck 600 and any of the flexible mechanisms described in the first aspect embodiment. The elastic chuck 600 is connected to the connector 100 and is used to cooperate with the connector 100 to clamp or release the workpiece 100.

[0050] It is understood that, in addition to the flexible mechanism in the first aspect embodiment described above, this flexible chuck also includes an elastic chuck 600. The elastic chuck 600 is connected to the connector 100 and can cooperate with the connector 100 to clamp or release the workpiece 100. Furthermore, when the workpiece 1000 jumps during processing, the presence of the flexible mechanism can reduce the wear of the workpiece 1000 on the elastic chuck 600 and the damage to the entire flexible chuck.

[0051] It should be understood that the elastic chuck 600 can be configured to include a collet and an elastic element, or it can be configured to include a collet and a second driving element. When the elastic chuck 600 is configured to include a collet and an elastic element, the collet and the elastic element are connected, and one end of the connecting member 100 and one end of the second adjusting member 300 are exposed respectively. When the elastic element is compressed, the collet can expose one end of the connecting member 100, thereby opening to release the workpiece 1000. When the elastic element is in its natural state, the collet retracts the connecting member 100 under the action of the elastic element and closes to clamp the workpiece 1000. When the elastic chuck 600 is configured to include a collet and a second driving element, the end of the collet exposed by the connecting member 100 can move along the Z-axis direction under the drive of the second driving element to extend or retract the connecting member 100, thereby opening to release the workpiece 1000 or closing to clamp the workpiece 1000.

[0052] It is understood that the system also includes a first driving member 700, the output end of which is connected to a second adjusting member 300 and used to drive the second adjusting member 300 to rotate along the XY plane, where the XY plane is the plane containing the X-axis and Y-axis. For example, as... Figures 4 to 6 As shown, in this embodiment, the flexible chuck also includes a first driving member 700 connected to the second adjusting member 300, for driving the second adjusting member 300 to rotate, thereby transmitting the rotation of the workpiece 100 to the connecting member 100 and the elastic chuck 600 through the first adjusting member 200.

[0053] Understandably, it also includes a V-block 900 and a pressure plate. The V-block 900 is located on the side of the connecting member 100 away from the second adjusting member 300. One side of the V-block 900 has a V-groove 910 for placing the workpiece 1000. The pressure plate is located on the side of the V-block 900 with the V-groove 910 and is used to radially position the workpiece 1000 in conjunction with the V-block 900, ensuring that the workpiece 1000 is always tangent to the V-groove 910. For example, as... Figures 4 to 6As shown, in this embodiment, one end of the workpiece 1000 can be positioned by a pressure plate and a V-block 900, thereby limiting the radial runout of the workpiece 1000 and reducing the defects in the radial machining of the workpiece 1000 caused by the radial runout of the workpiece 1000 during the machining process.

[0054] It should be understood that even when the V-groove 910 of the V-block 900 is worn, causing the V-groove 910 and the elastic chuck 600 to be out of sync in the Z-axis direction, specifically, when the opening of the V-groove 910 faces upward, the worn V-groove 910 is lower than the clamping position of the elastic chuck 600 in the height direction. At this time, the workpiece 1000, positioned by the pressure plate and the V-block 900, can still adjust the elastic chuck 600 to be coaxial with the worn V-groove 910 in the Z-axis direction through the adaptive adjustment of the flexible mechanism, thereby achieving high-precision machining of the workpiece 1000.

[0055] It should be understood that it also includes a speed reducer 800, which is connected to the first drive component 700 and the second adjustment component 300 respectively. The output end of the first drive component is eccentrically connected to the second adjustment component 300 through the speed reducer 800. The V-block 900 is connected and fixed to the housing of the speed reducer 800.

[0056] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A flexible mechanism, characterized by, The utility model relates to a kind of adjustable connection structure, including: Connecting piece (100), the side of connecting piece (100) is opened with first rolling groove (111) along X-axis direction; First adjusting piece (200) is located in the side of connecting piece (100) along Z-axis direction, the side of first adjusting piece (200) close to one end of connecting piece (100) is opened with second rolling groove (211) along X-axis direction, the side of first adjusting piece (200) away from one end of connecting piece (100) is opened with third rolling groove (221) along Y-axis direction; Second adjusting piece (300) is located in the one end of first adjusting piece (200) away from connecting piece (100) along Z-axis direction, the side of second adjusting piece is opened with fourth rolling groove (311) along Y-axis direction, and X-axis, Y-axis and Z-axis are perpendicular to each other; Roller assembly is provided with at least two groups and includes first roller group (410) and second roller group (420), first roller group (410) includes several first rollers, and the first roller is sequentially arranged along X-axis direction and is limited between first rolling groove (111) and second rolling groove (211), so that first adjusting piece (200) and connecting piece (100) can be relatively slid along X-axis direction, and second roller group (420) includes several second rollers, and the second roller is sequentially arranged along Y-axis direction and is limited between third rolling groove (221) and fourth rolling groove (311), so that first adjusting piece (200) and second adjusting piece (300) can be relatively slid along Y-axis direction; Locking assembly (500) is used to limit the distance of relative movement of connecting piece (100) and first adjusting piece (200) along X-axis direction, and is used to limit the distance of relative movement of first adjusting piece (200) and second adjusting piece (300) along Y-axis direction; The locking assembly (500) includes locking sleeve (510) and locking piece, the locking sleeve (510) is sleeved on the outside of connecting piece (100), first adjusting piece (200) and second adjusting piece (300), and the locking piece is used to connect any one of connecting piece (100), first adjusting piece (200), second adjusting piece (300) and locking sleeve (510), and the locking sleeve (510) covers the slot of both ends of first rolling groove (111) and second rolling groove (211), and the slot of both ends of third rolling groove (221) and fourth rolling groove (311). The first adjusting member (200) has two first protrusions (210) extending toward the connecting member (100) on both sides of the first protrusion (210) in the Y-axis direction. Two second grooves (211) are provided and are located on opposite sides of the two first protrusions (210). The connecting member (100) has a first insertion part (110) at the end near the first adjusting member (200). The first insertion part (110) can be inserted between the two first protrusions (210) along the X-axis direction. Two first grooves (111) are provided and are located on two opposite sides of the first insertion part (110) in the Y-axis direction. An adjusting member (200) has two second protrusions (220) extending toward the second adjusting member (300) on both sides of the second adjusting member (300) in the X-axis direction. The third roller groove (221) has two grooves and is located on the opposite sides of the two second protrusions (220). The second adjusting member (300) has a second insertion part (310) at one end near the first adjusting member (200). The second insertion part (310) can be inserted between the two second protrusions (220) in the Y-axis direction. The fourth roller groove (311) has two grooves and is located on the two opposite sides of the second insertion part (310) in the X-axis direction. The first adjusting member (200) further includes an elastic part (230). The first protrusion (210) and the second protrusion (220) are respectively disposed at both ends of the elastic part (230). The sidewall of the elastic part (230) near the end of the first protrusion (210) is provided with a first elastic groove (231) extending along the X-axis direction on both sides of the Y-axis direction. The first elastic groove (231) is used to provide the space required for the first protrusion (210) to undergo elastic deformation under the resistance of the roller. The sidewall of the elastic part (230) near the end of the second protrusion (220) is provided with a second elastic groove (232) extending along the Y-axis direction on both sides of the X-axis direction. The second elastic groove (232) is used to provide the space required for the second protrusion (220) to undergo elastic deformation under the resistance of the roller.

2. The flexible mechanism of claim 1, wherein, Both the first roller and the second roller are ball bearings, and the first groove (111), the second groove (211), the third groove (221) and the fourth groove (311) are all arc-shaped grooves adapted to the ball bearings.

3. The flexible mechanism of claim 2, wherein, The locking assembly (500) further includes a plurality of clamping members connected to the locking sleeve (510) and used to clamp the first protrusion (210) so that the groove surfaces of the second roller groove (211) and the first roller groove (111) are close to each other, and to clamp the second protrusion (220) so that the groove surfaces of the third roller groove (221) and the fourth roller groove (311) are close to each other.

4. The flexible mechanism of claim 1, wherein, The middle portion of the connector (100), the first adjusting member (200), and the second adjusting member (300) is provided with a through hole extending along the Z-axis direction.

5. A flexible collet, characterized by, It includes an elastic chuck (600) and a flexible mechanism as described in any one of claims 1-4 above, wherein the elastic chuck (600) is connected to the connector (100) and is used to cooperate with the connector (100) to clamp or release the workpiece (1000).

6. The flexible collet of claim 5, wherein, It also includes a first driving member (700), the output end of which is connected to the second adjusting member (300) and is used to drive the second adjusting member (300) to rotate along the XY plane, wherein the XY plane is the plane in which the X axis and the Y axis are located.

7. The flexible collet of claim 6, wherein, It also includes a V-block (900) and a pressure plate, The V-block (900) is located on the side of the connector (100) away from the second adjusting member (300). A V-groove (910) is provided on one side of the V-block (900) for placing the workpiece (1000). The pressure plate is located on the side of the V-block (900) with the V-groove (910) and is used to cooperate with the V-block (900) to radially position the workpiece (1000) so that the workpiece (1000) is always tangent to the V-groove (910).

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