Efficient part clamping structure for numerical control lathe

Abstract

The invention discloses an efficient part clamping structure for a numerical control lathe, and relates to the technical field of lathe clamps. The clamping device comprises a base and a driving assembly installed on the base, a clamping assembly is arranged at the top of the driving assembly, and reset assemblies for controlling the clamping assembly to reset are arranged on the front side and the rear side of the driving assembly correspondingly. By arranging the reset assembly, when a part needs to be clamped and fixed by the clamping jaw, the extension shaft is driven by the driven bevel gear to rotate, the shifting block on the extension shaft does circular motion around the extension shaft until the shifting block in the three-point direction of the ratchet wheel is shifted, and the shifting block and the rotating sleeve piece connected with the shifting block are driven to rotate anticlockwise; when the rotating sleeve rotates to the one o'clock direction, the ratchets are not meshed with the ratchet wheel any more, elastic potential energy of the compression spring is released, the reset arm and the push plate at one end of the reset arm are driven to move leftwards, the reset baffle is rapidly pushed in the leftward moving process, the clamping bases on the left side and the right side are driven to be away from the driving disc, and therefore the clamping jaws loosen parts.

Description

Technical Field

[0001] This invention belongs to the field of lathe clamping technology, and in particular relates to a high-efficiency component clamping structure for CNC lathes. Background Technology

[0002] A lathe is a machine tool primarily used to turn rotating workpieces using cutting tools. Drills, reamers, taps, dies, and knurling tools can also be used on a lathe for corresponding machining operations. Lathe fixtures are crucial devices on the machine tool used to clamp workpieces. Their core function is to ensure that the workpiece maintains the correct relative position with the cutting tool and machine tool during machining by positioning and clamping, thereby guaranteeing machining accuracy and efficiency.

[0003] Currently, in the component clamping structure of CNC lathes, the existing patent number "CN 110682136 A" discloses a high-efficiency multi-functional fixture for machine tools, including a base plate. Support plates are welded to both ends of the top of the base plate, and a guide rod is installed between the two support plates. A slide block is slidably connected to the outside of the guide rod, and a first rack is welded to the top of one side of the slide block. The present invention has a scientific and reasonable structure, is safe and convenient to use. The support plates and guide rods facilitate the sliding of the slide block, and the rotating rod, the first rack, the gear and the second rack facilitate the simultaneous pulling of the two slide blocks together. The operation is convenient and avoids the traditional machine tool fixture that uses a screw to tighten and fix the object, which is prone to screw stripping after long-term use and affects the use. The mounting block, mounting groove, connecting plate and mounting seat facilitate the installation of the fixing rod, and when the object to be clamped changes, it is convenient to replace one end of the fixing rod and the parts at the other end. However, the aforementioned patents cannot control the running distance between the two grippers when clamping parts. Some parts are hollow, so excessive clamping force may cause the parts to deform, while insufficient clamping force may cause the parts to fall off the fixture during the processing. At the same time, the clamping efficiency of the fixtures in the aforementioned patents is low, and the parts cannot be quickly removed from the fixture after processing.

[0004] Existing lathe component clamping structures cannot effectively control the clamping force on components during the clamping process, which may lead to damage and deformation of components due to excessive clamping force from the jaws. Furthermore, the efficiency of releasing the clamped components after machining is low. Therefore, this invention proposes a high-efficiency component clamping structure for CNC lathes. Summary of the Invention

[0005] The purpose of this invention is to provide an efficient component clamping structure for CNC lathes, which solves the problem that existing component clamping structures for lathes cannot control the clamping force of components during the clamping process, which may lead to damage and deformation of components due to excessive clamping force of the jaws, and the low efficiency of releasing the clamped components after processing.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] The present invention is a high-efficiency component clamping structure for CNC lathes, including a base and a drive assembly mounted on the base. The drive assembly is provided with a clamping assembly on the top and reset assemblies for controlling the reset of the clamping assembly are provided on the front and rear sides of the drive assembly, respectively.

[0008] The clamping assembly includes a drive disk, which is fixedly installed on the top of the drive assembly. The drive disk drives the top movable disk to rotate clockwise through an internally installed elastic trapezoidal component and hook teeth. The inclined tooth groove inside the movable disk engages with the hook teeth. The top cover installed on the top of the movable disk is welded to the center of its top drive arm. Both ends of the drive arm are movably connected to the clamping seats through a connecting arm. Each of the two clamping seats is equipped with two grippers, and a reset baffle is fixedly installed on one side of each clamping seat.

[0009] Preferably, the reset assembly includes a ratchet with a through hole at its center. An extension shaft passes through the through hole, with one end of the extension shaft fixedly connected to one end of a drive assembly and the other end having a paddle. A rotating assembly is movably sleeved on the side of a portion of the extension shaft protruding from the ratchet. A stop block is fixedly connected to the rotating assembly. During rotation, the paddle moves the stop block in a circular motion around the extension shaft. One end of the rotating assembly is connected to a ratchet tooth via a torsion spring connector. The ratchet tooth engages with the outer tooth groove of the ratchet. The other end of the torsion spring connector is welded to one end of a long rod. The other end of the long rod is fixedly connected to one end of a compression spring via a movable component. The other end of the compression spring passes through a triangular frame and is welded to a push plate. The push plate, driven by the drive assembly, pushes a reset baffle, resetting the clamping assembly connected to the reset baffle.

[0010] Preferably, one end of the triangular frame is fixedly connected to one end of the compression spring, and the other end of the compression spring is fixedly connected to one side of the compression plate. The compression plate is welded to the periphery of the reset arm, and the compression spring is sleeved on the periphery of the reset arm. The compression spring is in a compressed state when not driven.

[0011] Preferably, the drive assembly includes a motor, which is mounted at the top center of the base. The top output end of the motor is fixedly connected to the bottom of the gear disk, and the top center of the gear disk is fixedly connected to the bottom of the drive disk. A drive gear meshes with each of the front and rear sides of the gear disk. The bottom of the drive gear is fixedly connected to the driving helical gear directly below it via a connecting shaft. The bottom of the driving helical gear is movably connected to the top of the base. The side of the driving helical gear meshes with the driven helical gear. The driving helical gear and the driven helical gear are exactly the same size and specifications, and the meshing angle between the driving helical gear and the driven helical gear is 90°. The back of the driven helical gear is fixedly connected to one end of the extension shaft.

[0012] Preferably, the drive disk has three trapezoidal holes inside, arranged in a circular array around the center point of the drive disk. The inner wall of each trapezoidal hole is fixedly connected to one end of an elastic trapezoidal component, and the top of the elastic trapezoidal component is fixedly connected to a hook tooth. The movable disk is movably connected to the hook tooth at the bottom, and the inner side of the movable disk is provided with several oblique tooth grooves.

[0013] Preferably, both ends of the drive arm are movably connected to one end of the connecting arm via pins, and the other end of the connecting arm is mounted on the surface of the clamp via a fixed shaft. The bottom of the clamp is provided with a sliding groove, and the sliding groove is movably connected to a slide bar, which is welded to the top of the base.

[0014] Preferably, the top of the clamp extends outward from each of the two opposite sides, and a mounting hole is provided at one end of the mounting hole. The gripper is mounted inside the mounting hole through a movable shaft, and the inner surface of the gripper is arc-shaped.

[0015] Preferably, the reset assembly further includes a mounting plate, which is fixedly connected to the top of the base and located on the side of the passive helical gear. The extension shaft passes through the ratchet and the mounting plate in sequence and is fixedly connected to the side of the passive helical gear. The back of the ratchet is welded to the side of the mounting plate. One end of the triangular frame is fixedly connected to the surface of the mounting plate.

[0016] Preferably, the extension shaft rotates counterclockwise to move the stop block, causing the ratchet to move in a circular motion around the ratchet. The ratchet remains engaged with the tooth groove of the ratchet even when it is stationary.

[0017] Preferably, the furthest distance between the reset baffle and the push plate is equal to the length of the push plate ejection reset, and the length of the push plate ejection reset is equal to the straight-line distance after the ratchet rotates 180° around the extension axis.

[0018] The present invention has the following beneficial effects:

[0019] 1. This invention, by setting up a drive assembly, allows the top geared disc to rotate when the motor rotates. The clockwise rotation of the geared disc drives the clamping assembly at its top to rotate, enabling the clamping assembly to smoothly clamp the parts. Since the drive gears on the front and rear sides of the geared disc mesh with the geared disc, the rotation of the geared disc drives the drive wheel and the two helical gears at the bottom to rotate simultaneously. Because the passive helical gear is connected to the reset assembly, it can simultaneously drive the reset assembly to move. The drive assembly, through the transmission between its multiple gears, can simultaneously drive the clamping assembly and the reset assembly, reducing the cost of the fixture.

[0020] 2. This invention, by setting a drive disk, when the drive disk rotates clockwise under the drive of the drive assembly, the inclined surface of the hook tooth contacts the inclined surface of the inclined tooth groove. The friction generated between the two causes the drive disk to drive the movable disk to rotate clockwise at the same time. Therefore, it drives the top drive arm to rotate clockwise. Since the two ends of the drive arm are connected to connecting arms, the drive arm pulls the clamp at the other end of the connecting arm to gradually move closer to the position of the drive disk during the rotation. At the same time, the four jaws fixed on the left and right clamps approach the parts and clamp the parts. Since the jaws are fixed on the clamps through the movable shaft, the jaws can adjust the clamping angle according to the volume of the parts, so that the jaws and the parts fit more closely.

[0021] 3. In this invention, after the four grippers have fully clamped the component, the motor continues to drive the gear disk to rotate. However, the grippers are resisted by the component, preventing the gripper from moving further towards the drive disk. The drive arm and connecting arm connected to the gripper are at rest. The drive disk at the bottom of the drive arm continues to rotate under the motor's drive. Since the movable disk is fixedly connected to the drive arm via the top cover, when the drive arm stops rotating, the movable disk also stops rotating. The friction between the inclined surface of the hook teeth and the inclined surface of the tooth groove inside the drive disk is insufficient to prevent the drive disk from continuing to rotate. Therefore, as the drive disk continues to rotate, the hook teeth are squeezed inward by the inclined tooth groove, causing the elastic trapezoidal component to be squeezed and deformed. Finally, the hook teeth bypass the inclined tooth groove and connect with the movable disk. The inclined surface of the next inclined tooth groove inside the disk contacts the drive disk. If the drive disk continues to rotate, the hook teeth will continue to complete the above process. When the hook teeth collide with the inclined tooth groove and squeeze the elastic trapezoidal part, a friction sound will be emitted. The operator who operates the lathe fixture to clamp the part can know from the friction sound that the fixture has clamped in place, stop the drive motor, and complete the clamping of the part. During this process, the motor is always in the driving state, and after the part is clamped, the motor can still drive the drive disk to rotate. The top movable disk is subjected to very little rotational force. Therefore, the continuous squeezing force on the part after clamping can be ignored, avoiding the situation where the part is damaged or deformed due to the fixture continuously clamping and squeezing the part inward.

[0022] 4. In this invention, when the gripper holds the part and the motor stops driving, during the cutting process of the part, due to the elastic contact and friction between the hook teeth and the helical tooth groove, the movable disk cannot rotate counterclockwise without being subjected to huge external force interference, thus ensuring the stability of the gripper holding the part. Of course, during the cutting process, if the part is subjected to huge external force due to an accidental cutting, the movable disk can rotate counterclockwise, which can cause the gripper to open a certain distance, thereby freeing the part from the fixture. This avoids the situation where the part is always fixed and collides violently with the cutting tool, thereby damaging the tool and the part, reducing the danger during part processing. After the motor stops, the shaft is locked by its built-in mechanical brake device to prevent the shaft from rotating in the opposite direction.

[0023] 5. In this invention, by setting a reset component, when the gripper needs to release the component from its clamping and fixing position, the motor is restarted, and the extended shaft is rotated through the passive helical gear. The paddle on the extended shaft moves in a circular motion around the extended shaft until it actuates the paddle at the three o'clock position of the ratchet, causing the paddle and the rotating assembly connected to the paddle to rotate counterclockwise. When the rotating assembly rotates to the one o'clock position, the ratchet no longer engages the ratchet, and the elastic potential energy of the compressed spring is released, thereby causing the reset arm and the push plate at one end to move to the left. During the leftward movement, the reset baffle is quickly pushed, causing the clamps on both sides to move away from the drive plate, thereby releasing the component from the gripper's clamping position. During this process, only the motor needs to be restarted to release the gripper. At the same time, in this invention, a unidirectional AC motor can be selected, reducing the cost of using a DC motor that can rotate in both directions.

[0024] 6. In this invention, the ratchet rotates counterclockwise around the extension axis by moving the stop block with the paddle. When the ratchet rotates 180°, the pushing distance of the push plate reaches its maximum and the clamping range of the clamp reaches its maximum. At this time, after the elastic potential energy of the compression spring is rapidly released to its maximum, the spring retracts a certain distance under the action of inertia. This causes the ratchet to continue to rotate counterclockwise. With the continued movement of the paddle, the ratchet returns to the three o'clock position of the ratchet wheel, so that the ratchet is reset for the next reset. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is one of the overall structural schematic diagrams of the efficient component clamping structure for CNC lathes proposed in this invention;

[0027] Figure 2 This is a top view schematic diagram of the efficient component clamping structure for CNC lathes proposed in this invention;

[0028] Figure 3 This is the second schematic diagram of the overall structure of the high-efficiency component clamping structure for CNC lathes proposed in this invention;

[0029] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 This is a front view schematic diagram of the efficient component clamping structure for CNC lathes proposed in this invention;

[0031] Figure 6 For the present invention Figure 5 Enlarged view at point B in the middle;

[0032] Figure 7 This is a schematic diagram of the reset assembly structure of the high-efficiency component clamping structure for CNC lathes proposed in this invention;

[0033] Figure 8 For the present invention Figure 7 Enlarged view at point C;

[0034] Figure 9 This is a top view schematic diagram of a partial structure of the clamping assembly of the high-efficiency component clamping structure for CNC lathes proposed in this invention;

[0035] Figure 10 This is a partial structural breakdown diagram of the clamping assembly of the efficient component clamping structure for CNC lathes proposed in this invention.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 1. Base; 2. Motor; 3. Gear plate; 4. Drive gear; 5. Connecting shaft; 6. Active helical gear; 7. Passive helical gear; 8. Drive plate; 9. Elastic trapezoidal component; 10. Hook tooth; 11. Movable plate; 12. Helical tooth groove; 13. Top cover; 14. Drive arm; 15. Pin shaft; 16. Connecting arm; 17. Fixed shaft; 18. Clamp; 19. Movable shaft; 20. Gripper; 21. Slide bar; 22. Reset baffle; 23. Mounting plate; 24. Ratchet; 25. Extension shaft; 26. Pulley; 27. Rotating assembly; 28. Stop block; 29. ​​Ratchet; 30. Torsion spring connector; 31. Long rod; 32. Movable component; 33. Reset arm; 34. Triangular frame; 35. Compression spring; 36. Push plate; 37. Compression plate. Detailed Implementation

[0038] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0039] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for 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 invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] See Figure 1-10 The present invention is a high-efficiency component clamping structure for CNC lathes, including a base 1 and a drive assembly mounted on the base 1. A clamping assembly is provided on the top of the drive assembly, and reset assemblies for controlling the reset of the clamping assembly are provided on the front and rear sides of the drive assembly respectively. The base 1 is used to support the components on the top.

[0042] The clamping assembly includes a drive disk 8, which is fixedly installed on the top of the drive assembly. The drive disk 8 drives the top movable disk 11 to rotate clockwise through the internally installed elastic trapezoidal part 9 and hook teeth 10. The inclined tooth groove 12 inside the movable disk 11 engages with the hook teeth 10. The top cover 13 installed on the top of the movable disk 11 is welded to the center of its top drive arm 14. The two ends of the drive arm 14 are movably connected to the clamping seat 18 through a connecting arm 16. Two clamping claws 20 are installed on each clamping seat 18, and a reset baffle 22 is fixedly installed on one side of each clamping seat 18. The drive disk 8 is used to drive the top movable disk 11 to rotate, thereby driving the drive arm 14, and finally driving the connecting arm to pull the clamping seat 18, clamping the clamping claws 20 on the clamping seat 18 to hold the parts.

[0043] The reset assembly includes a ratchet 24 with a through hole at its center. An extension shaft 25 passes through the through hole, with one end of the extension shaft 25 fixedly connected to one end of the drive assembly and the other end equipped with a lever 26. A rotating assembly 27 is movably sleeved on the side of a portion of the extension shaft 25 protruding from the ratchet 24. A stop 28 is fixedly connected to the rotating assembly 27. During rotation, the lever 26 moves the stop 28 in a circular motion around the extension shaft 25. One end of the rotating assembly 27 is connected to a ratchet 29 via a torsion spring connector 30. The ratchet 29 engages with the outer tooth groove of the ratchet 24. The other end of the torsion spring connector 30 is welded to one end of a long rod 31. The other end of the long rod 31 is fixedly connected to one end of a compression spring 35 via a movable part 32. The other end of the compression spring 35 passes through... The triangular frame 34 is welded to the push plate 36. The push plate 36 pushes the reset baffle 22 under the drive of the drive assembly, so that the clamping assembly connected to the reset baffle 22 is reset. The ratchet 24 is used to cooperate with the ratchet 29. The ratchet 24 is in a fixed state and rotates around it through the ratchet 29. When the ratchet 29 is in its three o'clock position, the compression spring 35 is in a compressed state. When the ratchet 29 is in its nine o'clock position, the compression spring 35 is in an uncompressed state. Thanks to the inertia of the compression spring 35 after releasing its elastic potential energy, the compression spring 35 will re-contract, thereby driving the ratchet 29 to continue to rotate counterclockwise, thus rotating the ratchet 29 back to the three o'clock position of the ratchet 24. Even if the re-contraction force of the compression spring 35 is not enough, the toggle block 26 will also move the stop block 28 to drive the ratchet 29 back to the three o'clock position.

[0044] One end of the triangular frame 34 is fixedly connected to one end of the compression spring 35, and the other end of the compression spring 35 is fixedly connected to one side of the compression plate 37. The compression plate 37 is welded to the periphery of the reset arm 33, and the compression spring 35 is sleeved on the periphery of the reset arm 33. The compression spring 35 is in a compressed state when not driven. The triangular frame 34 serves to fix the compression spring 35 inside it, and the compression plate 37 serves to connect the compression spring 35. When the compression spring 35 releases its elastic potential energy, since the compression plate 37 is connected to the reset arm 33, the reset arm 33 is ejected through the compression spring 35.

[0045] The drive assembly includes a motor 2, which is mounted at the top center of the base 1. The top output end of the motor 2 is fixedly connected to the bottom of the gear disk 3, and the top center of the gear disk 3 is fixedly connected to the bottom of the drive disk 8. A drive gear 4 meshes with the front and rear sides of the gear disk 3, and the bottom of the drive gear 4 is fixedly connected to the driving helical gear 6 directly below it via a connecting shaft 5. The bottom of the driving helical gear 6 is movably connected to the top of the base 1. The side of the driving helical gear 6 meshes with the passive helical gear 7. The driving helical gear 6 and the passive helical gear 7 are exactly the same size and the included angle between the driving helical gear 6 and the passive helical gear 7 is 90°. The back of the passive helical gear 7 is fixedly connected to one end of the extension shaft 25.

[0046] The drive disk 8 has three trapezoidal holes inside, which are arranged in a circular array around the center point of the drive disk 8. Each trapezoidal hole has one side of its inner wall fixedly connected to one end of an elastic trapezoidal member 9. The top of the elastic trapezoidal member 9 is fixedly connected to the hook tooth 10. The movable disk 11 is movably connected to the hook tooth 10 at the bottom. The inner side of the movable disk 11 is provided with several oblique tooth grooves 12.

[0047] The two ends of the drive arm 14 are movably connected to one end of the connecting arm 16 via pins 15. The other end of the connecting arm 16 is mounted on the surface of the clamp 18 via a fixed shaft 17. A sliding groove is provided at the bottom of the clamp 18, and the sliding groove is movably connected to the slide bar 21. The slide bar 21 is welded to the top of the base 1.

[0048] The clamp 18 has a protrusion extending outward from each of its two opposite sides. One end of the protrusion has a mounting hole. The gripper 20 is mounted inside the mounting hole via the movable shaft 19. The inner side of the gripper 20 is arc-shaped.

[0049] The reset assembly also includes a mounting plate 23, which is fixedly connected to the top of the base 1 and located on the side of the passive helical gear 7. The extension shaft 25 passes through the ratchet 24 and the mounting plate 23 in sequence and is fixedly connected to the side of the passive helical gear 7. The back of the ratchet 24 is welded to the side of the mounting plate 23. One end of the triangular frame 34 is fixedly connected to the surface of the mounting plate 23.

[0050] The extension shaft 25 rotates counterclockwise to move the stop block 28, causing the ratchet 29 to move in a circular motion around the ratchet 24. The ratchet 29 remains engaged with the tooth groove of the ratchet 24 even when it is stationary.

[0051] Among them, the farthest distance between the reset baffle 22 and the push plate 36 is equal to the length of the push plate 36 ejecting and resetting, and the length of the push plate 36 ejecting and resetting is equal to the straight-line distance of the ratchet 29 after rotating 180° around the extension axis 25.

[0052] The working principle of this invention is as follows: The component to be clamped is placed between the four grippers 20. The motor 2 is started, and the drive disk 8 rotates clockwise under the drive of the motor 2. The inclined surface of the hook tooth 10 contacts the inclined surface of the inclined tooth groove 12. The friction between the two causes the drive disk 8 to drive the movable disk 11 to rotate clockwise at the same time. Therefore, the drive arm 14 at the top rotates clockwise. Since the two ends of the drive arm 14 are connected to the connecting arm 16, the drive arm 14 pulls the clamping seat 18 at the other end of the connecting arm 16 to gradually move closer to the position of the drive disk 8 during the rotation. At the same time, the four grippers 20 fixed on the left and right clamping seats 18 approach the component and clamp the component. After the four grippers 20 have fully clamped the component, the motor 2 continues to drive the gear disk 3 to rotate. However, the grippers 20 are resisted by the component, preventing the clamping seat 18 from moving further towards the drive disk 8. The drive arm 14 and connecting arm 16 connected to the clamping seat 18 are at rest. The drive disk 8 at the bottom of the drive arm 14 continues to rotate under the drive of the motor 2. Since the movable disk 11 is fixedly connected to the drive arm 14 through the top cover 13, when the drive arm 14 stops rotating, the movable disk 11 also stops rotating simultaneously. The friction between the inclined surface of the hook tooth 10 and the inclined surface of the inclined tooth groove 12 inside the drive disk 8 is insufficient to stop the drive disk 8 from continuing to rotate. As the disk 8 continues to rotate, the hook tooth 10 is squeezed inward by the helical tooth groove 12, causing the elastic trapezoidal part 9 to be squeezed and deformed. Finally, the hook tooth 10 bypasses the helical tooth groove 12 and contacts the inclined surface of the next helical tooth groove 12 inside the movable disk. If the drive disk 8 continues to rotate, the hook tooth 10 continues to complete the above process. When the hook tooth 10 collides with the helical tooth groove 12 and squeezes the elastic trapezoidal part 9, a friction sound will be emitted. The operator who operates the lathe fixture to clamp the parts can get the signal that the fixture has been clamped in place based on the friction sound, stop the drive motor 2, and complete the clamping of the parts. After the motor 2 stops, the rotating shaft is locked by its built-in mechanical brake device to prevent the rotating shaft from rotating in the opposite direction. When the component needs to be released from the gripper 20, the motor 2 is restarted, which drives the extension shaft 25 to rotate via the passive helical gear 7. The lever 26 on the extension shaft 25 rotates around the extension shaft 25 until it actuates the lever 26 at the three o'clock position of the ratchet 24, causing the lever 26 and the rotating assembly 27 connected to the lever 26 to rotate counterclockwise. When the rotating assembly 27 rotates to the one o'clock position, the ratchet 29 no longer engages the ratchet 24, and the elastic potential energy of the compression spring 35 is released, thereby causing the reset arm 33 and the push plate 36 at one end to move to the left. During the leftward movement, the reset baffle 22 is quickly pushed, causing the clamps 18 on both sides to move away from the drive disk 8, thereby releasing the component from the gripper 20.When the ratchet 29 rotates 180°, the pushing distance of the pusher plate 36 reaches its maximum, and the clamping range of the clamp reaches its maximum. At this time, after the elastic potential energy of the compression spring 35 is rapidly released to its maximum, the spring contracts again under the action of inertia. This causes the ratchet to continue to rotate counterclockwise, and under the continued action of the paddle, the ratchet returns to the three o'clock position of the ratchet wheel, so that the ratchet is reset for the next reset.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency component clamping structure for CNC lathes, comprising a base (1) and a drive assembly mounted on the base (1), characterized in that: The top of the drive assembly is provided with a clamping component, and the front and rear sides of the drive assembly are respectively provided with reset components for controlling the reset of the clamping component. The clamping assembly includes a drive disk (8), which is fixedly installed on the top of the drive assembly. The drive disk (8) drives the top movable disk (11) to rotate clockwise through the internally installed elastic trapezoidal part (9) and hook teeth (10). The inclined tooth groove (12) inside the movable disk (11) engages with the hook teeth (10). The top cover (13) installed on the top of the movable disk (11) is welded to the center of its top drive arm (14). The two ends of the drive arm (14) are movably connected to the clamping seat (18) through a connecting arm (16). Two clamping claws (20) are installed on each of the two clamping seats (18), and a reset baffle (22) is fixedly installed on one side of each clamping seat (18).

2. The high-efficiency component clamping structure for CNC lathes according to claim 1, characterized in that, The reset assembly includes a ratchet (24), with a through hole at its center. An extension shaft (25) is inserted through the through hole. One end of the extension shaft (25) is fixedly connected to one end of the drive assembly, and a lever (26) is provided on the other end. A rotating assembly (27) is movably sleeved on the side of a portion of the shaft protruding from the ratchet (24). A stop (28) is fixedly connected to the rotating assembly (27). During rotation, the lever (26) moves the stop (28) in a circular motion around the extension shaft (25). 27) One end is connected to a ratchet (29) via a torsion spring connector (30), the ratchet (29) is engaged on the outer tooth groove of the ratchet (24), the other end of the torsion spring connector (30) is welded to one end of a long rod (31), the other end of the long rod (31) is fixedly connected to one end of a compression spring (35) via a movable part (32), the other end of the compression spring (35) passes through a triangular frame (34) and is welded to a push plate (36), the push plate (36) pushes the reset baffle (22) under the drive of the drive assembly, so that the clamping assembly connected to the reset baffle (22) is reset.

3. The high-efficiency component clamping structure for CNC lathes according to claim 2, characterized in that, One end of the triangular frame (34) is fixedly connected to one end of the compression spring (35), and the other end of the compression spring (35) is fixedly connected to one side of the compression plate (37). The compression plate (37) is welded to the periphery of the reset arm (33), and the compression spring (35) is sleeved on the periphery of the reset arm (33). The compression spring (35) is in a compressed state when not driven.

4. The high-efficiency component clamping structure for CNC lathes according to claim 1, characterized in that, The drive assembly includes a motor (2), which is mounted at the top center of the base (1). The top output end of the motor (2) is fixedly connected to the bottom of the gear disk (3), and the top center of the gear disk (3) is fixedly connected to the bottom of the drive disk (8). A drive gear (4) meshes with the front and rear sides of the gear disk (3). The bottom of the drive gear (4) is fixedly connected to the active helical gear (6) directly below via a connecting shaft (5). The bottom of the active helical gear (6) is movably connected to the top of the base (1). The side of the active helical gear (6) meshes with the passive helical gear (7). The active helical gear (6) and the passive helical gear (7) are exactly the same size and have a meshing angle of 90°. The back of the passive helical gear (7) is fixedly connected to one end of the extension shaft (25).

5. The high-efficiency component clamping structure for CNC lathes according to claim 1, characterized in that, The drive disk (8) has three trapezoidal holes inside, and the three trapezoidal holes are arranged in a circular array around the center point of the drive disk (8). The inner wall of each trapezoidal hole is fixedly connected to one end of an elastic trapezoidal member (9). The top of the elastic trapezoidal member (9) is fixedly connected to the hook tooth (10). The movable disk (11) is movably connected to the hook tooth (10) at the bottom. The inner side of the movable disk (11) is provided with several oblique tooth grooves (12).

6. The high-efficiency component clamping structure for CNC lathes according to claim 1, characterized in that, The two ends of the drive arm (14) are movably connected to one end of the connecting arm (16) via pins (15). The other end of the connecting arm (16) is mounted on the surface of the clamp (18) via a fixed shaft (17). The bottom of the clamp (18) is provided with a sliding groove, and the sliding groove is movably connected to a slide bar (21). The slide bar (21) is welded to the top of the base (1).

7. The high-efficiency component clamping structure for CNC lathes according to claim 1, characterized in that, The clamp (18) has a protrusion extending outward from each of the two opposite sides of its top. One end of the protrusion has a mounting hole. The gripper (20) is mounted inside the mounting hole via a movable shaft (19). The inner side of the gripper (20) is arc-shaped.

8. The high-efficiency component clamping structure for CNC lathes according to claim 3, characterized in that, The reset assembly also includes a mounting plate (23), which is fixedly connected to the top of the base (1) and located on the side of the passive helical gear (7). The extension shaft (25) passes through the ratchet (24) and the mounting plate (23) in sequence and is fixedly connected to the side of the passive helical gear (7). The back of the ratchet (24) is welded to the side of the mounting plate (23). One end of the triangular frame (34) is fixedly connected to the surface of the mounting plate (23).

9. The high-efficiency component clamping structure for CNC lathes according to claim 8, characterized in that, The extension shaft (25) rotates counterclockwise to move the stop block (28), causing the ratchet (29) to make a circular motion around the ratchet (24). The ratchet (29) remains engaged with the tooth groove of the ratchet (24) when it is stationary.

10. The high-efficiency component clamping structure for CNC lathes according to claim 9, characterized in that, The furthest distance between the reset baffle (22) and the push plate (36) is equal to the length of the push plate (36) ejected and reset, and the length of the push plate (36) ejected and reset is equal to the straight-line distance of the ratchet (29) after rotating 180° around the extension axis (25).

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