Positioning adjusting device and five-axis machine tool with same

Abstract

This invention relates to the field of five-axis machine tools, specifically to a positioning and adjustment device and a five-axis machine tool having the same device. The positioning and adjustment device includes a mounting plate, with a circular frame fixedly connected to the top of the mounting plate. Multiple flexible clamping components are equidistantly arranged around the circumference of the circular frame. Each flexible clamping component includes a movable plate slidably connected to the bottom wall of the circular frame. A square frame is rotatably connected to the movable plate, with a strip groove at the top of the square frame. A sliding rod is fixedly connected within the strip groove, and a sliding block is slidably fitted onto the sliding rod. First springs are movably fitted on both sides of the sliding rod. A rocker arm is rotatably connected to the top of the sliding block, with one end of the rocker arm rotatably connected to the movable plate. A support rod is fixedly connected to the square frame. This invention allows for adaptive adjustment based on the workpiece, ensuring clamping stability, adapting to workpieces of different shapes and sizes, and improving versatility and flexibility.

Description

Technical Field

[0001] This invention relates to the field of five-axis machine tool technology, specifically to a positioning adjustment device and a five-axis machine tool having the positioning adjustment device. Background Technology

[0002] A five-axis machine tool is a high-precision, high-efficiency machining equipment that can machine complex curved surfaces and arbitrary angles in three-dimensional space through the coordinated movement of its five axes. This type of machine tool is widely used in high-end manufacturing industries such as aerospace, automotive manufacturing, and mold making, significantly improving machining accuracy and production efficiency.

[0003] In the machining process of a five-axis machine tool, precise positioning and fixation of the workpiece are required to ensure its positional stability. However, existing positioning and adjustment devices have significant limitations when dealing with irregular workpieces. Due to the varying shapes and sizes of irregular workpieces, traditional rigid clamping mechanisms struggle to achieve stable clamping. This not only leads to workpiece positional shifts during machining, affecting machining results, but also causes workpiece damage. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the fact that, in the prior art, due to the different shapes and sizes of irregular workpieces, traditional rigid clamping mechanisms are difficult to achieve stable clamping, which not only causes the workpiece to shift position during processing, affecting the processing effect, but also causes damage to the workpiece. Thus, the present invention provides a positioning adjustment device and a five-axis machine tool having the positioning adjustment device.

[0005] To solve the above-mentioned technical problems, the present invention provides a positioning adjustment device, including a mounting plate, wherein a circular frame is fixedly connected to the top of the mounting plate;

[0006] Multiple flexible clamping components are equidistantly arranged around the inner circumference of the circular frame.

[0007] The flexible clamping assembly includes a movable plate, which is slidably connected to the bottom wall of the inner wall of the circular frame;

[0008] A square frame is rotatably connected to the movable plate. A strip groove is provided at the top of the square frame. A sliding rod is fixedly connected in the strip groove. A sliding block is slidably sleeved on the sliding rod. First springs are movably sleeved on both sides of the sliding rod.

[0009] The top of the sliding block is rotatably connected to a rocker arm, one end of which is rotatably connected to a moving plate;

[0010] A support rod is fixedly connected to the square frame, and a fixing block is fixedly connected to one end of the support rod. Multiple flexible fingers are fixed on the fixing block.

[0011] The tail end of the movable plate is rotatably connected to a threaded rod, one end of which extends outward through the threaded hole of the circular frame, and a handle is fixedly connected to the other end of the threaded rod.

[0012] Furthermore, the flexible finger includes a connecting rod and a stop rod. The connecting rod is fixedly connected to the inner wall of the fixed block. The stop rod has an adjustment cavity. One end of the connecting rod passes through the stop rod and extends into the adjustment cavity. A sliding plate is fixedly sleeved on one end of the connecting rod. A second spring is provided between the sliding plate and the inner wall of the adjustment cavity.

[0013] Furthermore, the inner sidewall of the circular frame is provided with arc-shaped grooves at equal intervals, and the width of the arc-shaped grooves is greater than the width of the fixing block.

[0014] Furthermore, a locking nut is threaded onto the outer surface of the threaded rod, and the locking nut abuts against the outer wall of the circular frame.

[0015] Furthermore, the bottom of the circular frame is fixedly connected to multiple position limiting components, the top of the mounting plate is provided with multiple insertion holes, and the inner sidewall of the mounting plate is fixedly connected to multiple locking and unlocking components. The bottom of the position limiting component is inserted into the insertion hole, and the locking and unlocking component is used to lock and unlock the position limiting component.

[0016] Furthermore, the position limiting component includes a plug rod, which is fixedly connected to the bottom of the circular frame. A sleeve is fixedly connected to the bottom of the plug rod, and a fixing groove is provided on the inner wall of the sleeve. A locking element is connected in the fixing groove.

[0017] Furthermore, the locking component includes a movable rod, one end of which is fixedly connected to a locking block. The outer side of the locking block is provided with an inclined portion. A third spring is sleeved on the outer surface of the movable rod. One end of the third spring abuts against the locking block, and the other end of the third spring abuts against the inner wall of the fixing groove. The other end of the movable rod passes through the sleeve and extends to the outer side of the sleeve. A limiting plate is fixedly sleeved on the other end of the movable rod.

[0018] Furthermore, the locking release assembly includes a lug, which is fixedly connected to the inner side wall of the mounting plate. A push rod is slidably inserted into the lug, the top of the push rod extends to the top of the lug, and a support rod is fixedly connected to the top of the push rod. A first frustum sleeve is fixedly fitted on the outer surface of the push rod, a second frustum sleeve is fixedly connected to the top of the support rod, and a third frustum sleeve is slidably fitted on the outer surface of the support rod.

[0019] A support plate is fixedly fitted on the top of the outer surface of the push rod, and a push plate is fixedly connected to the bottom of the push rod. A fourth spring is fitted on the outer surface of the push rod, with the top of the fourth spring abutting against the bottom of the support lug and the bottom of the fourth spring abutting against the top of the push plate.

[0020] Furthermore, the third frustum sleeve is located between the first frustum sleeve and the second frustum sleeve. The outer curved surface diameter of the first frustum sleeve gradually decreases along the direction closer to the third frustum sleeve, the outer curved surface diameter of the second frustum sleeve gradually decreases along the direction away from the third frustum sleeve, and the outer curved surface diameter of the third frustum sleeve gradually decreases along the direction away from the second frustum sleeve.

[0021] The diameter of the support plate is smaller than the inner diameter of the sleeve. A positioning rod is fixedly connected to the inner top wall of the sleeve, and the positioning rod is movably inserted into the inside of the second frustum sleeve.

[0022] The present invention also provides a five-axis machine tool, including the positioning and adjustment device described in the present invention.

[0023] By employing the above technical solution, the present invention provides a positioning adjustment device and a five-axis machine tool having the positioning adjustment device, which has at least the following beneficial effects:

[0024] 1. In this invention, the workpiece is placed inside the circular frame, and the workpiece contacts the flexible fingers. The flexible fingers have a certain degree of elasticity and will initially adapt and adjust according to the shape and size of the workpiece. Rotating the handle causes the threaded rod to gradually advance along the threaded hole of the circular frame, pushing the moving plate to slide along the inner bottom wall of the circular frame. The square frame and support rod will move together with the flexible fingers, gradually tightening the clamping of the workpiece. At the same time, the square frame rotates on the moving plate, while the sliding block slides on the sliding rod, driving the rocker arm to rotate. The flexible fingers are driven to rotate through the support rod and the fixed block. This allows for adaptive adjustment according to the shape and size of the workpiece, ensuring clamping stability. This design can adapt to workpieces of different shapes and sizes, improving versatility and flexibility.

[0025] 2. In this invention, as the sliding plate slides, the second spring is compressed and generates a reaction force, which is transmitted to the abutment rod, causing it to exert a certain clamping force on the workpiece. Since the second spring has a certain elasticity, it can be adaptively adjusted according to the shape and size of the workpiece to ensure the uniformity and stability of the clamping force. When the flexible finger fully clamps the workpiece and reaches the required clamping force, the entire positioning and adjustment device can lock the workpiece in the designated position. At this time, the elastic force of the second spring and the squeezing force of the workpiece reach a balanced state, ensuring that the workpiece will not be displaced during processing.

[0026] 3. In this invention, the mounting plate is fixedly mounted on the turntable of a five-axis machine tool, the circular frame is placed on the top of the mounting plate, and the bottom of the position limiting component is inserted into the socket. The position limiting component can be locked by the locking release component, which facilitates the fixing and installation of the positioning adjustment device. When the positioning adjustment device needs to be replaced, the position limiting component can be unlocked by the locking release component, so that the circular frame can be removed from the mounting plate or repositioned. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the positioning and adjustment device.

[0029] Figure 2 This is a schematic diagram of the mounting plate structure in the positioning and adjustment device;

[0030] Figure 3 This is a schematic diagram of the circular frame and clamping assembly in the positioning and adjustment device;

[0031] Figure 4 A partial structural diagram of the circular frame and clamping components in the positioning and adjustment device;

[0032] Figure 5 This is a schematic diagram of the flexible clamping component structure in the positioning and adjustment device;

[0033] Figure 6 This is a schematic diagram of the square frame structure in the positioning and adjustment device;

[0034] Figure 7 This is a schematic diagram of the flexible finger structure in the positioning and adjustment device;

[0035] Figure 8 A bottom view of the circular frame and flexible clamping assembly structure in the positioning and adjustment device;

[0036] Figure 9 For positioning and adjustment device Figure 8 Enlarged view of a portion at point A;

[0037] Figure 10 This is a schematic diagram of the locking component in the positioning and adjustment device;

[0038] Figure 11 A schematic diagram of the mounting plate and locking release component in the positioning and adjustment device;

[0039] Figure 12 For positioning and adjustment device Figure 12 A magnified schematic diagram of the structure at point B;

[0040] Figure 13 This is a schematic diagram of the locking release component in the positioning and adjustment device;

[0041] Figure 14This is a front view of the five-axis machine tool structure.

[0042] Figure 15 This is a rear view of the five-axis machine tool structure.

[0043] In the diagram: 1. Mounting plate; 101. Insertion hole; 2. Circular frame; 201. Arc groove; 3. Flexible clamping assembly; 301. Moving plate; 302. Square frame; 303. Support rod; 304. Fixing block; 305. Flexible finger; 3051. Connecting rod; 3052. Abutment rod; 3053. Adjustment cavity; 3054. Sliding plate; 3055. Second spring; 306. Sliding rod; 307. Sliding block; 308. First spring; 309. Rocker arm; 310. Threaded rod; 311. Handle; 312. Locking screw 4. Position limiting assembly; 401. Insert rod; 402. Sleeve; 403. Positioning rod; 404. Fixing groove; 405. Locking component; 4051. Moving rod; 4052. Locking block; 4053. Inclined part; 4054. Third spring; 4055. Limiting plate; 5. Lock release assembly; 501. Support lug; 502. Push rod; 503. Support rod; 504. First frustum sleeve; 505. Second frustum sleeve; 506. Third frustum sleeve; 507. Support plate; 508. Push plate; 509. Fourth spring. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Because irregular workpieces vary in shape and size, traditional rigid clamping mechanisms have difficulty achieving stable clamping. This not only causes the workpiece to shift position during processing, affecting the processing effect, but also leads to damage to the workpiece.

[0046] Specifically, existing positioning and adjustment devices are often designed to clamp workpieces with regular shapes, but lack sufficient adaptability and flexibility for irregular workpieces.

[0047] This invention proposes a positioning adjustment device and a five-axis machine tool equipped with the positioning adjustment device, which can adaptively adjust according to the workpiece, ensure clamping stability, adapt to workpieces of different shapes and sizes, and improve versatility and flexibility.

[0048] like Figure 1 , Figure 3 and Figure 4As shown, a positioning adjustment device includes a mounting plate 1, with a circular frame 2 fixedly connected to the top of the mounting plate 1; a plurality of flexible clamping components 3 are equidistantly arranged on the inner circumference of the circular frame 2.

[0049] like Figure 5 and Figure 6 As shown, the flexible clamping assembly 3 includes a movable plate 301, which is slidably connected to the inner bottom wall of the circular frame 2; a square frame 302 is rotatably connected to the movable plate 301, the top of the square frame 302 is provided with a strip groove, a slide rod 306 is fixedly connected in the strip groove, a slide block 307 is slidably sleeved on the slide rod 306, and a first spring 308 is movably sleeved on both sides of the slide rod 306; a rocker arm 309 is rotatably connected to the top of the slide block 307, one end of the rocker arm 309 is rotatably connected to the movable plate 301; a support rod 303 is fixedly connected to the square frame 302, a fixing block 304 is fixedly connected to one end of the support rod 303, and a plurality of flexible fingers 305 are fixed on the fixing block 304; a threaded rod 310 is rotatably connected to the tail end of the movable plate 301, one end of the threaded rod 310 extends outward through the threaded hole of the circular frame 2, and a handle 311 is fixedly connected to one end of the threaded rod 310. The workpiece is placed inside the circular frame 2, and the workpiece contacts the flexible fingers 305. The flexible fingers 305 have a certain degree of elasticity and will initially adapt and adjust according to the shape and size of the workpiece. Rotating the handle 311 causes the threaded rod 310 to gradually advance along the threaded hole of the circular frame 2, pushing the moving plate 301 to slide along the inner bottom wall of the circular frame 2. The square frame 302 and the support rod 303 will drive the flexible fingers 305 to move together, gradually tightening the clamping of the workpiece. At the same time, the square frame 302 rotates on the moving plate 301, while the sliding block 307 slides on the sliding rod 306, driving the rocker arm 309 to rotate. Through the support rod 303 and the fixed block 304, the flexible fingers 305 rotate. This allows for adaptive adjustment according to the shape and size of the workpiece, ensuring the stability of the clamping. This design can adapt to workpieces of different shapes and sizes, improving versatility and flexibility.

[0050] like Figure 7As shown, the flexible finger 305 includes a connecting rod 3051 and a stop rod 3052. The connecting rod 3051 is fixedly connected to the inner wall of the fixed block 304. The stop rod 3052 is provided with an adjustment cavity 3053. One end of the connecting rod 3051 passes through the stop rod 3052 and extends into the adjustment cavity 3053. A sliding plate 3054 is fixedly sleeved on one end of the connecting rod 3051. A second spring 3055 is provided between the sliding plate 3054 and the inner wall of the adjustment cavity 3053. When the workpiece contacts the flexible finger 305, the abutment 3052 is subjected to the compressive force of the workpiece, which is transmitted to the sliding plate 3054, causing the sliding plate 3054 to slide inside the adjustment cavity 3053. As the sliding plate 3054 slides, the second spring 3055 is compressed and generates a reaction force, which is transmitted to the abutment 3052, causing it to exert a certain clamping force on the workpiece. Since the second spring 3055 has a certain elasticity, it can be adaptively adjusted according to the shape and size of the workpiece to ensure the uniformity and stability of the clamping force. When the flexible finger 305 fully clamps the workpiece and reaches the required clamping force, the entire positioning and adjustment device can lock the workpiece in the designated position. At this time, the elastic force of the second spring 3055 and the compressive force of the workpiece reach a balance, ensuring that the workpiece will not be displaced during processing.

[0051] like Figure 4 As shown, the inner sidewall of the circular frame 2 is provided with equidistant arc-shaped grooves 201, the width of which is greater than the width of the fixed block 304. The arc-shaped grooves 201 provide a swinging space for the fixed block 304, which can adaptively adjust the angle of the flexible finger 305 according to the shape and size of the workpiece.

[0052] like Figure 4 and Figure 5 As shown, a locking nut 312 is threaded onto the outer surface of the threaded rod 310, and the locking nut 312 abuts against the outer wall of the circular frame 2. When the flexible finger 305 fully clamps the workpiece and reaches the required clamping force, the locking nut 312 is tightened, locking the threaded rod 310 onto the circular frame 2. In this way, the entire positioning and adjustment device stably locks the workpiece in the designated position, which is beneficial for subsequent processing.

[0053] like Figure 2 , Figure 8 and Figure 11As shown, multiple position limiting components 4 are fixedly connected to the bottom of the circular frame 2, and multiple insertion holes 101 are provided on the top of the mounting plate 1. Multiple locking and unlocking components 5 are fixedly connected to the inner side wall of the mounting plate 1. The bottom of the position limiting components 4 is inserted into the insertion hole 101, and the locking and unlocking components 5 are used to lock and unlock the position limiting components 4. The mounting plate 1 is fixedly installed on the turntable of a five-axis machine tool, and the circular frame 2 is placed on top of the mounting plate 1, so that the bottom of the position limiting components 4 is inserted into the insertion hole 101. The position limiting components 4 can be locked by the locking and unlocking components 5, which facilitates the fixing and installation of the positioning adjustment device. When the positioning adjustment device needs to be replaced, the position limiting components 4 can be unlocked by the locking and unlocking components 5, so that the circular frame 2 can be removed from the mounting plate 1 or repositioned.

[0054] like Figure 8 and Figure 9 As shown, the position limiting component 4 includes a rod 401, which is fixedly connected to the bottom of the circular frame 2. A sleeve 402 is fixedly connected to the bottom of the rod 401. A fixing groove 404 is provided on the inner wall of the sleeve 402, and a locking member 405 is connected in the fixing groove 404.

[0055] like Figure 10 As shown, the locking member 405 includes a moving rod 4051. One end of the moving rod 4051 is fixedly connected to a locking block 4052. The outer side of the locking block 4052 is provided with an inclined portion 4053. A third spring 4054 is sleeved on the outer surface of the moving rod 4051. One end of the third spring 4054 abuts against the locking block 4052, and the other end of the third spring 4054 abuts against the inner wall of the fixing groove 404. The other end of the moving rod 4051 passes through the sleeve 402 and extends to the outer side of the sleeve 402. A limiting plate 4055 is fixedly sleeved on the other end of the moving rod 4051.

[0056] like Figure 11 , Figure 12 and Figure 13 As shown, the locking release assembly 5 includes a lug 501, which is fixedly connected to the inner wall of the mounting plate 1. A push rod 502 is slidably inserted into the lug 501. The top of the push rod 502 extends to the top of the lug 501. A support rod 503 is fixedly connected to the top of the push rod 502. A first frustum sleeve 504 is fixedly fitted on the outer surface of the push rod 502. A second frustum sleeve 505 is fixedly connected to the top of the support rod 503. A third frustum sleeve 506 is slidably fitted on the outer surface of the support rod 503. A support plate 507 is fixedly fitted on the top of the outer surface of the push rod 502. A push plate 508 is fixedly connected to the bottom of the push rod 502. A fourth spring 509 is fitted on the outer surface of the push rod 502. The top of the fourth spring 509 abuts against the bottom of the lug 501, and the bottom of the fourth spring 509 abuts against the top of the push plate 508.

[0057] like Figure 13 As shown, the third frustum sleeve 506 is located between the first frustum sleeve 504 and the second frustum sleeve 505. The outer surface diameter of the first frustum sleeve 504 gradually decreases along the direction closer to the third frustum sleeve 506. The outer surface diameter of the second frustum sleeve 505 gradually decreases along the direction away from the third frustum sleeve 506. The outer surface diameter of the third frustum sleeve 506 gradually decreases along the direction away from the second frustum sleeve 505. The maximum outer diameters of the second frustum sleeve 505 and the third frustum sleeve 506 are equal.

[0058] like Figure 9 and Figure 13 As shown, the diameter of the support plate 507 is smaller than the inner diameter of the sleeve 402. The inner top wall of the sleeve 402 is fixedly connected to a positioning rod 403, which is movably inserted into the inside of the second frustum sleeve 505.

[0059] like Figure 14 and Figure 15 As shown, this invention also provides a five-axis machine tool, which includes three linear axes and two rotary axes. The three linear axes are the X-axis, Y-axis, and Z-axis. The X-axis is responsible for the left-right movement of the workpiece. Through the movement of the X-axis, the tool can perform machining in the horizontal direction of the workpiece. The Y-axis is perpendicular to the X-axis and is responsible for the forward-backward movement of the workpiece. The combined use of the Y-axis and X-axis allows the tool to perform precise two-dimensional machining on the plane of the workpiece. The Z-axis is the vertical motion axis of the five-axis machine tool, responsible for the up-down movement of the tool. By adjusting the Z-axis, the relative height between the tool and the workpiece can be controlled, thereby achieving depth machining of the workpiece.

[0060] The two rotation axes are the A-axis and the C-axis. The A-axis typically rotates around the X-axis, also known as the rotation axis about the X-axis. By rotating the A-axis, the horizontal tilt angle of the tool relative to the workpiece can be changed, thus enabling the machining of complex curved surfaces. The C-axis typically rotates around the Z-axis, also known as the rotation axis about the Z-axis. Rotation of the C-axis allows the tool to rotate around the axis of the workpiece for machining. Through the coordinated movement of these five axes, machining of complex curved surfaces and arbitrary angles in three-dimensional space can be achieved.

[0061] like Figure 14 and Figure 15 As shown, a five-axis machine tool includes a positioning adjustment device, which is installed on the turntable of the five-axis machine tool. The positioning adjustment device can adaptively adjust according to the shape and size of the workpiece, and the installation and replacement of the positioning adjustment device are also relatively convenient, which greatly improves the operation convenience of the five-axis machine tool.

[0062] When in use, the mounting plate 1 is fixedly installed on the turntable of the five-axis machine tool, and the sleeve 402 of the position limiting component 4 is inserted into the insertion hole 101 of the mounting plate 1. When the sleeve 402 descends and approaches the locking release component 5, the positioning rod 403 begins to enter the interior of the second frustum sleeve 505.

[0063] As the sleeve 402 continues to descend, the locking block 4052 moves downward along the outer curved surface of the second frustum sleeve 505. When the locking block 4052 passes the maximum outer diameter of the second frustum sleeve 505 and reaches below the second frustum sleeve 505, the elastic force of the third spring 4054 pushes the locking block 4052, causing the locking block 4052 to abut against the outer surface of the support rod 503. At this time, the top of the locking block 4052 contacts the bottom of the second frustum sleeve 505, and the bottom of the sleeve 402 abuts against the top of the lug 501, thereby locking the position of the position limiting component 4 and completing the installation of the positioning adjustment device.

[0064] When it is necessary to unlock, push the push plate 508 upward, the fourth spring 509 is compressed and moves upward through the push rod 502, the support plate 507 and the support rod 503, causing the second frustum sleeve 505 to move upward. At this time, the inclined part 4053 at the bottom of the locking block 4052 will slide on the third frustum sleeve 506, the third spring 4054 is compressed and continues to push the push plate 508 upward, so that the locking block 4052 can pass the maximum diameter of the third frustum sleeve 506. The elastic force of the third spring 4054 is released, the locking block 4052 slides downward on the outer curved surface of the second frustum sleeve 505 and moves to the bottom of the third frustum sleeve 506.

[0065] At this point, pull the circular frame 2 upwards, and the locking block 4052 will cause the third frustum sleeve 506 to move upwards on the outer surface of the support rod 503. The top of the third frustum sleeve 506 will contact the bottom of the second frustum sleeve 505. Continue to pull the circular frame 2 upwards, and the locking block 4052 will slide upwards on the outer curved surface of the second frustum sleeve 505. When the locking block 4052 moves to the maximum outer diameter of the third frustum sleeve 506, since the maximum outer diameters of the second frustum sleeve 505 and the third frustum sleeve 506 are equal, the locking block 4052 can directly pass over the third frustum sleeve 506 and the second frustum sleeve 505. The locking block 4052 will disengage from the lock on the bottom of the second frustum sleeve 505, and the circular frame 2 can be removed.

[0066] Release the push plate 508, and under the action of the fourth spring 509, the support plate 507 moves downward and abuts against the top of the support lug 501, and the push plate 508 returns to its initial position.

[0067] When clamping the workpiece, in the initial state, the flexible finger 305 is in a naturally extended state, and the two first springs 308 simultaneously apply a certain preload to the sliding block 307 to keep the rocker arm 309 stable.

[0068] When the workpiece is placed inside the circular frame 2, the workpiece comes into contact with the flexible finger 305. The flexible finger 305 has a certain elasticity and will make preliminary adaptation and adjustment according to the shape and size of the workpiece.

[0069] Rotating the handle 311 causes the threaded rod 310 to gradually advance along the threaded hole of the circular frame 2, pushing the moving plate 301 to slide along the inner bottom wall of the circular frame 2. The square frame 302 and the support rod 303 then move the flexible finger 305 together, gradually tightening the clamping of the workpiece. Simultaneously, the square frame 302 rotates on the moving plate 301, while the sliding block 307 slides on the sliding rod 306, causing the rocker arm 309 to rotate. The flexible finger 305 rotates via the support rod 303 and the fixed block 304, allowing for adaptive adjustment according to the shape and size of the workpiece, ensuring clamping stability. This design can adapt to workpieces of different shapes and sizes, improving versatility and flexibility.

[0070] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning adjusting device, comprising a mounting disc (1), characterized in that: a circular frame (2) is fixedly connected to the top of the mounting disc (1); a plurality of flexible clamping assemblies (3) are arranged equidistantly on the inner circumference of the circular frame (2); the flexible clamping assembly (3) comprises a moving plate (301) which is slidingly connected to the inner bottom wall of the circular frame (2); a square frame (302) is rotatably connected to the moving plate (301), the top of the square frame (302) is provided with a strip-shaped groove, a slide rod (306) is fixedly connected to the strip-shaped groove, a sliding block (307) is slidingly sleeved on the slide rod (306), and first springs (308) are movably sleeved on both sides of the slide rod (306); a rocker arm (309) is rotatably connected to the top of the sliding block (307), and one end of the rocker arm (309) is rotatably connected to the moving plate (301); a support rod (303) is fixedly connected to the square frame (302), one end of the support rod (303) is fixedly connected to a fixed block (304), and a plurality of flexible fingers (305) are fixed to the fixed block (304); a threaded rod (310) is rotatably connected to the tail end of the moving plate (301), one end of the threaded rod (310) extends to the outside through a threaded hole of the circular frame (2), and a handle (311) is fixedly connected to one end of the threaded rod (310); a plurality of position limiting assemblies (4) are fixedly connected to the bottom of the circular frame (2), a plurality of insertion holes (101) are arranged on the top of the mounting disc (1), a plurality of locking and unlocking assemblies (5) are fixedly connected to the inner side wall of the mounting disc (1), the bottom of the position limiting assembly (4) is inserted into the insertion hole (101), and the locking and unlocking assembly (5) is used for locking and unlocking the position limiting assembly (4).

2. The positioning adjusting device according to claim 1, characterized in that: the flexible finger (305) comprises a connecting rod (3051) and an abutting rod (3052), the connecting rod (3051) is fixedly connected to the inner side wall of the fixed block (304), the abutting rod (3052) is provided with an adjusting cavity (3053), one end of the connecting rod (3051) penetrates through the abutting rod (3052) and extends into the adjusting cavity (3053), a sliding plate (3054) is fixedly sleeved on one end of the connecting rod (3051), and a second spring (3055) is arranged between the sliding plate (3054) and the inner side wall of the adjusting cavity (3053).

3. The positioning adjusting device according to claim 1, characterized in that: arc-shaped grooves (201) are equidistantly arranged on the inner ring side wall of the circular frame (2), and the width of the arc-shaped groove (201) is greater than the width of the fixed block (304).

4. The positioning adjusting device according to claim 1, characterized in that: a locking nut (312) is threadedly sleeved on the outer surface of the threaded rod (310), and the locking nut (312) abuts against the outer side wall of the circular frame (2).

5. The positioning adjusting device according to claim 1, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The position limiting assembly (4) comprises an insertion rod (401), the insertion rod (401) is fixedly connected to the bottom of the circular frame (2), the bottom of the insertion rod (401) is fixedly connected with a sleeve (402), the inner wall of the sleeve (402) is provided with a fixed groove (404), and the fixed groove (404) is connected with a locking piece (405).

6. The positioning adjustment device according to claim 5, wherein: The locking piece (405) comprises a moving rod (4051), one end of the moving rod (4051) is fixedly connected with a locking block (4052), the outer side of the locking block (4052) is provided with an inclined part (4053), the outer surface of the moving rod (4051) is sleeved with a third spring (4054), one end of the third spring (4054) abuts on the locking block (4052), the other end of the third spring (4054) abuts on the inner wall of the fixed groove (404), the other end of the moving rod (4051) penetrates through the sleeve (402) and extends to the outer side of the sleeve (402), and the other end of the moving rod (4051) is fixedly sleeved with a limiting plate (4055).

7. The positioning adjustment device according to claim 6, wherein: The locking release assembly (5) comprises a supporting lug (501), the supporting lug (501) is fixedly connected to the inner side wall of the mounting disc (1), a push rod (502) is slidably inserted into the supporting lug (501), the top of the push rod (502) extends to the top of the supporting lug (501), the top of the push rod (502) is fixedly connected with a supporting rod (503), the outer surface of the push rod (502) is fixedly sleeved with a first circular cone sleeve (504), the top of the supporting rod (503) is fixedly connected with a second circular cone sleeve (505), and the outer surface of the supporting rod (503) is slidably sleeved with a third circular cone sleeve (506); the top of the outer surface of the push rod (502) is fixedly sleeved with a supporting plate (507), the bottom of the push rod (502) is fixedly connected with a push plate (508), the outer surface of the push rod (502) is sleeved with a fourth spring (509), the top of the fourth spring (509) abuts on the bottom of the supporting lug (501), and the bottom of the fourth spring (509) abuts on the top of the push plate (508).

8. The positioning adjustment device according to claim 7, wherein: The third circular cone sleeve (506) is located between the first circular cone sleeve (504) and the second circular cone sleeve (505), the diameter of the outer curved surface of the first circular cone sleeve (504) gradually decreases along the direction close to the third circular cone sleeve (506), the diameter of the outer curved surface of the second circular cone sleeve (505) gradually decreases along the direction away from the third circular cone sleeve (506), the diameter of the outer curved surface of the third circular cone sleeve (506) gradually decreases along the direction away from the second circular cone sleeve (505), and the maximum outer diameters of the second circular cone sleeve (505) and the third circular cone sleeve (506) are equal. The diameter of the branch plate (507) is smaller than the inner diameter of the sleeve (402), an inner top wall of the sleeve (402) is fixedly connected with a positioning rod (403), and the positioning rod (403) is movably inserted into the inside of the second circular cone sleeve (505).

9. A five-axis machine tool comprising the positioning adjustment device according to any one of claims 1 to 8.

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