Rotary type automatic locking chuck

Abstract

The invention relates to the technical field of optical wand clamping devices, in particular to a rotary type automatic locking chuck which comprises a chuck body. The first gear set comprises a first gear and a second gear meshed with the outside of the first gear; the second gear set comprises a third gear which is coaxial with the first gear and has the same structure as the first gear and a fourth gear which is meshed with the outside of the third gear and has the same structure as the second gear; the planetary gear mechanism is internally meshed with the first gear and the third gear; the second gear is rotationally connected with the damping driving mechanism, and the fourth gear is fixedly connected with the damping driving mechanism; the damping driving mechanism is matched with the second gear set to provide damping force for the chuck, and the planetary gear mechanism is matched with the first gear set to provide driving force for the chuck to quickly lock or release the chuck, so that the problems of breakage, falling and the like of a light rod due to improper locking force of the light rod are solved, and meanwhile, the service life of the light rod is prolonged. And the time for clamping the light rod by the chuck is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of optical rod clamping devices, and in particular to a rotary automatic locking chuck. Background Art

[0002] During the production, processing and testing of light rods, the upper and lower ends of the light rods need to be clamped and fixed for subsequent operations such as stretching, grinding, and testing. As a commonly used light rod clamping device, the performance of the chuck directly affects the quality and efficiency of light rod processing.

[0003] In the prior art, chucks are usually clamped manually or pneumatically, but they all have certain technical defects: for example, the locking force is difficult to accurately control, and the light rod is easily broken due to excessive locking force, or the light rod falls off during processing due to insufficient locking force, affecting the smooth progress of processing, and even causing product scrapping and equipment damage. At the same time, the clamping process of traditional chucks often takes a long time, reducing production efficiency and increasing production costs. Summary of the invention

[0004] In order to solve at least one of the above technical problems, the present invention proposes a rotary automatic locking chuck to solve the problems that the chuck locking force cannot be preset, the locking force is difficult to accurately control resulting in broken rods and falling off, and the chuck clamping time is long affecting production efficiency.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A rotary automatic locking chuck, comprising:

[0007] A chuck for holding the light rod;

[0008] A first gear set includes a first gear and a second gear meshing with the outside of the first gear;

[0009] A second gear set includes a third gear coaxial with the first gear and having the same structure as the first gear, and a fourth gear meshing with the outside of the third gear and having the same structure as the second gear, the fourth gear being coaxial with the second gear;

[0010] A planetary gear mechanism, meshing with the first gear and the third gear, for driving the first gear to rotate and meshing with the second gear to rotate, so that the chuck is locked and reaches a set locking force value;

[0011] A damping drive mechanism, wherein the second gear is rotationally connected to the damping drive mechanism, and the fourth gear is fixedly connected to the damping drive mechanism; the damping drive mechanism is used to provide a damping force of a set damping force value to the chuck;

[0012] When the locking force value is less than the damping force value, the damping drive mechanism restricts the third gear and the fourth gear from rotating;

[0013] When the locking force value is equal to or greater than the damping force value, the damping drive mechanism and the planetary gear mechanism directly or indirectly drive the first gear, the second gear, the third gear and the fourth gear to rotate synchronously, so that the chuck applies the set locking force value to the optical rod and maintains the locking state or releases the optical rod.

[0014] Preferably, the planetary gear mechanism comprises:

[0015] A first planetary gear set meshing with the inside of the first gear, wherein the centers of the planetary gears of the first planetary gear set are located on the circumference where the centers of the first gear and / or the second gear are located;

[0016] A first sun gear, located at the center of the first planetary gear set and being a fixed center gear, the first sun gear is meshed with the outside of the first planetary gear set, and the central axis of the first sun gear coincides with the central axis of the first gear and / or the second gear;

[0017] a second planetary gear set meshing with the inside of the third gear, the second planetary gear set being coaxial with the planetary gears corresponding to the first planetary gear set, and the center of each planetary gear of the second planetary gear set being located on the circumference where the center of the second gear and / or the first gear is located;

[0018] A planetary gear shaft seat, wherein the first planetary gear set and the second planetary gear set are rotatably arranged on both sides of the planetary gear shaft seat via a rotating shaft;

[0019] A second sun gear, located at the center of the second planetary gear set and being a rotating center gear, the second sun gear is meshed with the outside of the second planetary gear set, and the central axis of the second sun gear coincides with the central axis of the first gear and / or the second gear;

[0020] The first driving device is used to drive the second sun gear to rotate.

[0021] Preferably, the number of gears of the first planetary gear set and the second planetary gear set is 3.

[0022] Preferably, the first driving device comprises:

[0023] a first drive motor;

[0024] A first driving wheel, sleeved and fixed on one end of the output shaft of the first driving motor;

[0025] a first mechanical shaft, the second sun gear is sleeved and fixed on the first mechanical shaft, and the central axis of the first mechanical shaft is parallel to the central axis of the output shaft of the first drive motor;

[0026] A first driven wheel, sleeved and fixed on an end of the first mechanical shaft away from the first sun wheel, wherein the first driven wheel and the first driving wheel are located in the same plane;

[0027] The first transmission member is wound around the outer circumference of the first driving wheel and the first driven wheel, and the first driving wheel transmits the first driven wheel through the first transmission member.

[0028] Preferably, the damping drive mechanism comprises:

[0029] a second damping drive motor;

[0030] A second driving wheel, sleeved and fixed on one end of the output shaft of the second damping drive motor;

[0031] a second mechanical shaft, the second gear is rotatably sleeved on the second mechanical shaft, the fourth gear is fixedly sleeved on the second mechanical shaft, and the central axis of the second mechanical shaft is parallel to the central axis of the output shaft of the second driving wheel;

[0032] A second driven wheel is sleeved and fixed on an end of the second mechanical shaft away from the second gear and / or the fourth gear, and the second driving wheel and the second driven wheel are located in the same plane;

[0033] The second transmission member is wound around the outer circumference of the second driving wheel and the second driven wheel, and the second driving wheel drives the second driven wheel through the second transmission member.

[0034] Preferably, the first transmission member and the second transmission member are chains or synchronous belts.

[0035] Preferably, it also includes:

[0036] The first box body has a containing cavity for housing the first gear, the third gear and the first mechanical shaft;

[0037] The second box body has a containing cavity for housing the second gear, the fourth gear and the second mechanical shaft;

[0038] The adjacent surfaces of the first housing and the second housing are at least partially connected to form a connecting portion, so as to facilitate meshing transmission between the first gear and the second gear, and between the third gear and the fourth gear.

[0039] Preferably, the chuck comprises:

[0040] Chuck body;

[0041] A locking plate, rotatably disposed in the chuck body, wherein the locking plate is fixed to a side of the second gear away from the fourth gear;

[0042] A coiled wire is fixedly arranged on the locking disk, and a side of the coiled wire away from the locking disk is provided with an involute spiral line;

[0043] A plurality of claws are arranged in a circular array around the center of the chuck on the chuck body. When the coil wire rotates, the claws are driven to approach or move away from the center of the chuck body along the radial direction of the chuck body to clamp or release the optical rod.

[0044] Preferably, the chuck body is radially provided with a plurality of claw grooves in an annular array around the center of the chuck, and the claws include:

[0045] A claw seat is slidably arranged in the claw groove, guide blocks are symmetrically arranged on both sides of the inner wall of the claw groove along its length direction, and guide grooves adapted to the guide blocks are arranged on both sides of the claw seat; a spiral groove meshing with the involute helix is ​​arranged at the lower part of the claw seat;

[0046] A plurality of clamping members are arranged on the clamping claw seat, and the plurality of clamping members form a clamping space for clamping the light rod;

[0047] The fine-tuning member is arranged on the inner side of the clamping member close to the center of the chuck, and the fine-tuning member at least partially extends out of the inner side of the clamping member; the fine-tuning member can move along the radial direction of the chuck to fine-tune the center of the chuck, and the fine-tuning member is made of non-metallic material.

[0048] Preferably, it further comprises a limiting mechanism, and the limiting mechanism comprises:

[0049] A clamping jaw limiting plate is used to prevent the clamping jaw from being separated from the coil wire when the clamping jaw moves away from the chuck radially. The limiting plate is fixed to one end of the clamping jaw away from the center of the chuck. The clamping jaw limiting plates are distributed in a circular array around the center of the chuck. The outer periphery of the clamping jaw limiting plate is an arc, and the center of the arc is the center of the chuck.

[0050] The travel switch is arranged at the same height as the periphery of the clamping claw limiting plate and has a first installation distance with the clamping claw limiting plate, wherein the first installation distance is smaller than the maximum distance that the clamping claw moves along the radial direction of the coil wire.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] 1. The present invention provides damping force to the chuck through the damping drive mechanism in conjunction with the second gear set, and provides driving force to the chuck through the planetary gear mechanism in conjunction with the first gear set. Under the coordination of the damping force, the chuck is quickly locked or released so as to clamp the optical rod with a set pressure, thereby avoiding problems such as the optical rod being broken or falling off due to improper locking force, and at the same time, reducing the clamping time of the chuck on the optical rod, thereby improving production efficiency. The device presets the locking force after debugging, has high repeated positioning accuracy, short clamping time, simple operation, and stable clamping.

[0053] 2. The present invention arranges a first planetary gear set and a second planetary gear set that rotate coaxially, so that the first gear and the third gear respectively meshed therewith can rotate independently or remain stationary or rotate synchronously, thereby completing the locking action of the light rod or maintaining the locking state or the release action.

[0054] 3. The present invention sets a limit mechanism so that after the light rod is stretched, the claw slides away from the center of the chuck to release the light rod. The coiled wire continues to rotate, and the involute spiral line on its surface engages with the spiral groove at the bottom of the claw seat, driving the claw seat to move away from the chuck radially. When the outer periphery of the claw limit plate touches the travel switch, the first drive motor is turned off by the travel switch, thereby preventing the claw from being separated from the coiled wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a structural schematic diagram of a rotary automatic locking chuck;

[0056] Figure 2 It is a front view of a rotary automatic locking chuck;

[0057] Figure 3 A top view of a rotary automatic locking chuck;

[0058] Figure 4 is a schematic diagram of the configuration of the first planetary gear set and the first gear in the present invention;

[0059] Figure 5 is a schematic diagram of the configuration of the second planetary gear set and the third gear in the present invention;

[0060] Figure 6 It is an exploded schematic diagram of the gear part in the planetary gear mechanism of the present invention;

[0061] Figure 7 A three-dimensional image of a rotary automatic locking chuck

[0062] Figure 8 is a three-dimensional diagram of the chuck in the present invention;

[0063] Fig. 9 It is an exploded schematic diagram of the chuck in the present invention;

[0064] In the figure: 10, chuck; 101, chuck body; 1011, claw groove; 102, locking plate; 103, coil wire; 1031, involute helix; 104, claw; 1041, claw seat; 10411, spiral groove; 1042, clamping member; 1043, fine adjustment member; 105, claw limit plate; 20, first gear set; 201, first gear; 202, second gear; 30, second gear set; 301, third gear; 302, fourth gear; 40, planetary gear mechanism; 401, first planetary gear set; 402, first sun gear; 403, second planetary gear set; 404, planetary gear shaft seat; 405, second sun gear; 406, first driving device; 4061, first driving motor; 4062, first driving wheel; 4063, first mechanical shaft; 4064, first driven wheel; 50, damping driving mechanism; 501, second damping driving motor; 502, second driving wheel; 503, second mechanical shaft; 504, second driven wheel; 60, first housing; 70, second housing; 80, first protective cover; 90, second protective cover. DETAILED DESCRIPTION

[0065] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments of the present invention.

[0066] Please refer to Figure 1-9 As shown, a rotary automatic locking chuck 10 comprises:

[0067] A chuck 10, used for clamping the light rod;

[0068] The first gear set 20 includes a first gear 201 and a second gear 202 meshing with the outside of the first gear 201;

[0069] The second gear set 30 comprises a third gear 301 which is coaxial with the first gear 201 and has the same structure as the first gear 201, and a fourth gear 302 which is meshed with the outside of the third gear 301 and has the same structure as the second gear 202, and the fourth gear 302 is coaxial with the second gear 202;

[0070] The planetary gear mechanism 40 is meshed with the first gear 201 and the third gear 301 to drive the first gear 201 to rotate and mesh with the second gear 202 to rotate, so that the chuck 10 is locked and reaches a set locking force value;

[0071] The damping drive mechanism 50, the second gear 202 is rotatably connected to the damping drive mechanism 50, and the fourth gear 302 is fixedly connected to the damping drive mechanism 50; the damping drive mechanism 50 is used to provide a damping force of a set damping force value to the chuck 10;

[0072] When the locking force value is less than the damping force value, the damping drive mechanism 50 restricts the third gear 301 and the fourth gear 302 from rotating;

[0073] When the locking force value is equal to or greater than the damping force value, the damping drive mechanism 50 and the planetary gear mechanism 40 directly or indirectly drive the first gear 201, the second gear 202, the third gear 301 and the fourth gear 302 to rotate synchronously, so that the chuck 10 applies the set locking force value to the optical rod and maintains the locking state or releases the optical rod.

[0074] In this embodiment, the damping drive mechanism 50 cooperates with the second gear 202 group to provide a damping force to the chuck 10, and the planetary gear mechanism 40 cooperates with the first gear 201 group 20 to provide a driving force to the chuck 10. With the coordination of the damping force, the chuck 10 is quickly locked or released to clamp the optical rod at a set pressure, thereby avoiding problems such as the optical rod breaking or falling off due to improper locking force. At the same time, the clamping time of the chuck 10 on the optical rod is reduced, thereby improving production efficiency.

[0075] It should be noted that, since both the first gear 201 and the third gear 301 need to have the functions of internal meshing and external meshing, in this embodiment, the first gear 201 and the third gear 301 are spur gears with internal and external teeth.

[0076] Please refer to Figure 4-Figure 6 As shown, in this embodiment, the planetary gear mechanism 40 includes:

[0077] The first planetary gear set 401 is meshed with the inside of the first gear 201, and the centers of the planetary gears of the first planetary gear set 401 are located on the circumference where the centers of the first gear 201 and / or the second gear 202 are located; the first sun gear 402 is located at the center of the first planetary gear set 401 and is a fixed center gear, the first sun gear 402 is meshed with the outside of the first planetary gear set 401, and the central axis of the first sun gear 402 coincides with the central axis of the first gear 201 and / or the second gear 202; the second planetary gear set 403 is meshed with the inside of the third gear 301, and the second planetary gear set 403 is coaxial with the planetary gears corresponding to the first planetary gear set 401, The centers of the planetary gears of the second planetary gear set 403 are located on the circumference where the centers of the second gear 202 and / or the first gear 201 are located; the planetary gear shaft seat 404, the first planetary gear set 401 and the second planetary gear set 403 are rotatably arranged on both sides of the planetary gear shaft seat 404 through a rotating shaft; the second sun gear 405 is located at the center of the second planetary gear set 403 and is a rotating center gear, the second sun gear 405 is meshed with the outside of the second planetary gear set 403, and the central axis of the second sun gear 405 coincides with the central axis of the first gear 201 and / or the second gear 202; the first driving device 406 is used to drive the second sun gear 405 to rotate.

[0078] It should be noted that the first planetary gear set 401 and the second planetary gear set 403 can both revolve and rotate. The first planetary gear set 401 is used to directly or indirectly drive the first gear 201 and the second gear 202, thereby driving the chuck 10 to lock or release. The second planetary gear set 403 is used to provide a damping force to the chuck 10, so that the chuck 10 maintains a locked state under its drive after reaching a preset locking force.

[0079] Specifically, when the first driving device 406 drives the second sun gear 405 to rotate, the second planetary gear set 403 meshing with the outside of the second sun gear 405 rotates and simultaneously revolves along the inner tooth track of the third gear 301 .

[0080] The second planetary gear set 403 drives the first planetary gear set 401 to rotate. Since the first sun gear 402 is a fixed center gear, that is, the first sun gear 402 itself does not rotate, the first planetary gear set 401 rotates itself and revolves along the inner tooth track of the first gear 201, thereby driving the first gear 201 to rotate, and further rotating the second gear 202 through meshing transmission. It can be understood that by controlling the forward or reverse rotation of the first driving device 406, under the action of the damping driving mechanism 50, the chuck 10 can be locked or released.

[0081] Therefore, in this embodiment, by providing the first planetary gear set 401 and the second planetary gear set 403 that rotate coaxially, the first gear 201 and the third gear 301 that are respectively meshed therewith are in the following three states:

[0082] The first gear 201 rotates, and the third gear 301 is stationary. At this time, the chuck 10 is in a gradually locked state;

[0083] The first gear 201 and the third gear 301 rotate synchronously, and the chuck 10 maintains a locked state with a set locking force;

[0084] The first gear 201 rotates in the opposite direction (relative to the locked state of the chuck 10 ), and the third gear 301 is stationary. At this time, the chuck 10 is in a gradually released state.

[0085] Please refer to Figure 6 As shown, in this embodiment, the number of gears of the first planetary gear set 401 and the second planetary gear are both 3. Obviously, the gear composition of the planetary gear in this application can be determined according to the actual load and space.

[0086] Please refer to Figure 1 and Figure 2 As shown, in this embodiment, the first driving device 406 includes:

[0087] A first driving motor 4061;

[0088] The first driving wheel 4062 is sleeved and fixed on one end of the output shaft of the first driving motor 4061;

[0089] A first mechanical shaft 4063, the second sun gear 405 is sleeved and fixed on the first mechanical shaft 4063, and the central axis of the first mechanical shaft 4063 is parallel to the central axis of the output shaft of the first driving motor 4061;

[0090] The first driven wheel 4064 is sleeved and fixed on one end of the first mechanical shaft 4063 away from the first sun gear 402 , and the first driven wheel 4064 and the first driving wheel 4062 are located in the same plane;

[0091] The first transmission member is wound around the outer circumference of the first driving wheel 4062 and the first driven wheel 4064 , and the first driving wheel 4062 drives the first driven wheel 4064 through the first transmission member.

[0092] Specifically, the first drive motor 4061 can be an AC servo motor or a stepper motor. The first transmission member can be a chain or a synchronous belt, and the corresponding first driving wheel 4062 and the first driven wheel 4064 should be compatible with the chain or the synchronous belt, using sprockets or synchronous gears.

[0093] Please refer to Figure 1 and Figure 2As shown, the damping drive mechanism 50 in this embodiment includes:

[0094] A second damping drive motor 501;

[0095] The second driving wheel 502 is sleeved and fixed on one end of the output shaft of the second damping driving motor 501;

[0096] A second mechanical shaft 503, the second gear 202 is rotatably sleeved on the second mechanical shaft 503, the fourth gear 302 is fixedly sleeved on the second mechanical shaft 503, and the central axis of the second mechanical shaft 503 is parallel to the central axis of the output shaft of the second driving wheel 502;

[0097] The second driven wheel 504 is sleeved and fixed on an end of the second mechanical shaft 503 away from the second gear 202 and / or the fourth gear 302, and the second driving wheel 502 and the second driven wheel 504 are located in the same plane;

[0098] The second transmission member is wound around the outer circumference of the second driving wheel 502 and the second driven wheel 504 , and the second driving wheel 502 drives the second driven wheel 504 through the second transmission member.

[0099] Specifically, in order to provide a certain damping force, the second damping drive motor 501 adopts a damping motor. The damping motor preferably adopts mechanical damping, that is, a corresponding mechanical damping device is configured on the motor, for example, mechanical components such as friction plates, springs, damping plates, and damping rods. At the same time, the damping force of the second damping drive motor 501 can be adjusted by adjusting the mechanical damping device, thereby adjusting the preset value of the locking force of the chuck 10.

[0100] The second transmission member mentioned above may be a chain or a synchronous belt, and the corresponding second driving wheel 502 and the second driven wheel 504 should be compatible with the chain or the synchronous belt, and adopt sprockets or synchronous gears.

[0101] It should be noted that the working principles of the above-mentioned first drive motor 4061 and the second damping drive motor 501 and the connection method between the gears and the transmission mechanism belong to the prior art and will not be repeated in this application.

[0102] Please refer to Figure 7 As shown, in order to facilitate the installation and protection of the gears, in this embodiment, the first gear 201, the third gear 301 and the first mechanical shaft 4063 are covered with a first box 60; wherein the first sun gear 402 is fixed to the first box 60 to achieve the function of fixing the center wheel. The first mechanical shaft 4063 partially extends out of the first box 60, and the first driven wheel 4064 is connected to the extended portion of the first mechanical shaft 4063. At the same time, the first driven wheel 4064 is covered with a first shield 80 to protect the first driven wheel 4064, and the first shield 80 is detachably fixed to the first box 60.

[0103] The first drive motor 4061 is fixedly mounted on the outside of the first shield 80 via a first mounting plate, wherein the output shaft portion of the first drive motor 4061 extends out from the lower portion of the first mounting plate and is connected to the first driving wheel 4062 .

[0104] In order to facilitate the first transmission member to be mounted on the first driving wheel 4062 and the second driving wheel 502 , a through hole is provided on a side of the first shield 80 close to the first driving wheel 4062 .

[0105] Similarly, the second gear 202, the fourth gear 302 and the second mechanical shaft 503 are covered with a second housing 70, wherein the second mechanical shaft 503 partially extends out of the second housing 70 and is connected to the second driven wheel 504. At the same time, a second shield 90 is provided below the second housing 70, and the second shield 90 covers the second driving wheel 502 and the second driven wheel 504. The second damping drive motor 501 is located outside the second shield 90, and the output shaft partially extends into the second shield 90 and is connected to the second driving wheel 502.

[0106] In order to facilitate the meshing transmission between the first gear 201 and the second gear 202 and between the third gear 301 and the fourth gear 302 , at least a portion of the adjacent surfaces of the first housing 60 and the second housing 70 are provided with communicating through holes to form a communicating portion.

[0107] Please refer to Figure 1 , Figure 2 , Figure 8 and Fig. 9 As shown, the chuck 10 in this embodiment includes:

[0108] Chuck 10 body;

[0109] The locking plate 102 is rotatably disposed in the chuck 10, and the locking plate 102 is fixed to a side of the second gear 202 away from the fourth gear 302;

[0110] The coiled wire 103 is fixedly arranged on the locking disk 102, and a side of the coiled wire 103 away from the locking disk 102 is provided with an involute spiral line 1031;

[0111] A plurality of claws 104 are arranged in a circular array around the center of the chuck 10 on the chuck 10 body. When the coil wire 103 rotates, the claws 104 are driven to move radially toward or away from the center of the chuck 10 body to clamp or release the optical rod.

[0112] The chuck 10 body is radially provided with a plurality of claw grooves 1011 in an annular array around the center of the chuck 10, and the claws 104 include:

[0113] The claw seat 1041 is slidably disposed in the claw groove 1011. Guide blocks are symmetrically arranged on both sides of the inner wall of the claw groove 1011 along its length direction. Guide grooves adapted to the guide blocks are arranged on both sides of the claw seat 1041. A spiral groove 10411 meshing with the involute spiral line 1031 is arranged at the lower part of the claw seat 1041.

[0114] A plurality of clamping members 1042 are disposed on the claw seat 1041, and the plurality of clamping members 1042 form a clamping space for clamping the light rod;

[0115] The fine-tuning member 1043 is arranged on the inner side of the clamping member 1042 close to the center of the chuck 10, and the fine-tuning member 1043 at least partially extends out of the inner side of the clamping member 1042; the fine-tuning member 1043 can move along the radial direction of the chuck 10 to fine-tune the center of the chuck 10, and the fine-tuning member 1043 is made of non-metallic material.

[0116] In this embodiment, the function of the chuck 10 is to lock or release the optical rod by driving it through a driving device so as to facilitate the stretching of the optical rod, and to release the optical rod after the stretching is completed.

[0117] It should be noted that, in this embodiment, the clamping member 1042 is L-shaped, wherein the L-shaped clamping member 1042 includes a fixed section that is detachably fixed to the claw seat 1041 and a clamping section that is perpendicular to the fixed section. A clamping block is provided on one side of the fixed end adjacent to the claw seat 1041, and a clamping groove is provided at the corresponding position of the claw seat 1041 and the clamping block. At the same time, the fixed section and the claw seat 1041 are fixed by bolts or other fasteners. In this way, the coiled wire 103 of the chuck 10 rotates to drive the claw seat 1041 to move radially along the chuck 10. When the optical rod is clamped, the optical rod will apply a force opposite to the locking force to the clamping member 1042. At the same time, this opposite force is also along the radial direction of the chuck 10. Due to the block and slot structure, the clamping member 1042 can be effectively prevented from being displaced radially of the chuck 10 or deflected at a certain angle to the radial direction, thereby effectively improving the stability of the chuck 10 in clamping the optical rod and avoiding the problem of the optical rod falling off due to unstable clamping.

[0118] In addition, the claw groove 1011 and the claw seat 1041 are correspondingly provided with guide blocks and guide grooves, so that the claw seat 1041 can move stably along the radial direction of the chuck 10, further improving the clamping stability of the chuck 10 on the light rod.

[0119] In order to facilitate the installation and adjustment of the fine-tuning member 1043, in this embodiment, a mounting groove is provided inside the vertical section of the clamping member 1042.

[0120] Considering that the chuck 10 is mostly installed as a whole, due to the processing accuracy and assembly tolerance, the chuck 10 may have radial runout. At this time, the center of the chuck 10 can be adjusted by adjusting the fine-tuning member 1043. At the same time, the fine-tuning member 1043 made of non-metallic material can increase the friction between the claw 104 and the light rod when the chuck 10 is locked, and can also avoid scratching the surface of the light rod. In this embodiment, the fine-tuning member 1043 is made of polyetheretherketone. Of course, according to actual operating needs, other suitable materials can be selected to achieve a balance between locking and scratch protection. This application is not limited to this.

[0121] Please refer to Figure 7-Figure 9 As shown, in order to prevent the claw 104 from being separated from the coil 103, the chuck 10 in this embodiment is also provided with a limiting mechanism, which includes:

[0122] The clamping jaw limiting plate 105 is used to prevent the clamping jaw 104 from being separated from the coil 103 when the clamping jaw 104 moves away from the chuck 10 in the radial direction. The limiting plate is fixed to the end of the clamping jaw 104 away from the center of the chuck 10. The clamping jaw limiting plates 105 are distributed in a circular array around the center of the chuck 10. The outer periphery of the clamping jaw limiting plates 105 is an arc, and the center of the arc is the center of the chuck 10.

[0123] The travel switch is arranged at the same height as the periphery of the clamping claw limiting plate 105 and has a first installation distance with the clamping claw limiting plate 105 . The first installation distance is smaller than the maximum distance that the clamping claw 104 moves radially along the coil wire 103 .

[0124] Specifically, after the optical rod is stretched, the claw 104 slides in a direction away from the center of the chuck 10 to release the optical rod. The coiled wire 103 continues to rotate, and the involute spiral line 1031 on its surface engages with the spiral groove 10411 at the bottom of the claw seat 1041, driving the claw seat 1041 radially away from the chuck 10. When the outer periphery of the claw limit plate 105 touches the travel switch, the first drive motor 4061 is turned off by the travel switch to prevent the claw 104 from disengaging from the coiled wire 103. The working principle of the travel switch to control the start and stop of the motor and the circuit connection relationship belong to the prior art, and this application will not be repeated here.

[0125] The working process of the rotary automatic locking chuck 10 in this embodiment is as follows:

[0126] 1. Light rod clamping

[0127] The first driving motor 4061 is started, and the first driving wheel 4062 drives the first driven wheel 4064 through the first transmission member to drive the second sun gear 405 to rotate, thereby driving the second planetary gear set 403 and the coaxial first planetary gear set 401 to rotate.

[0128] Under the restriction of the damping force of the second damping drive motor 501 , the second mechanical shaft 503 remains stationary, the fourth gear 302 does not rotate, and the third gear 301 meshing with the fourth gear 302 remains stationary.

[0129] The first sun gear 402 is fixed, and the first planetary gear set 401 rotates to drive the first gear 201 to rotate, and the second gear 202 is meshed to rotate, thereby driving the locking disk 102 and the coil wire 103 to rotate. Through the meshing transmission of the involute helix 1031 and the spiral groove 10411, the claw seat 1041 gathers radially along the chuck 10 (slides toward the center of the chuck 10), and the chuck 10 performs a locking action. Until the locking force value of the chuck 10 is greater than the damping force value of the second damping drive motor 501, the second damping drive motor 501 is started, the first drive motor 4061 is turned off, and the second driving wheel 502 drives the second driven wheel 504 to rotate and the second mechanical shaft 503 to rotate through the second transmission member, thereby driving the fourth gear 302 to rotate and meshing the third gear 301. The third gear 301 internally meshes and drives the second planetary gear set 403 to rotate, and drives the coaxial first planetary gear set 401 to rotate, meshes and drives the first gear 201 and the third gear 301 to rotate synchronously, and then meshes and drives the second gear 202 and the fourth gear 302 to rotate synchronously. Thus, the chuck 10 clamps the light rod with a set locking force and maintains a locked state.

[0130] 2. Light stick release

[0131] When the optical rod is stretched, the second damping drive motor 501 is turned off, and the first drive motor 4061 is started and reversed (relative to the rotation direction of the first drive motor 4061 when the optical rod is clamped).

[0132] The transmission relationship of each component is the same as that in the optical rod clamping process, and the third gear 301 and the fourth gear 302 remain stationary during this process. The difference is that the second planetary gear set 403, the first planetary gear set 401, the first gear 201 and the second gear 202 rotate in the opposite direction, thereby driving the locking disk 102 and the coil wire 103 to rotate in the opposite direction, and the involute helix 1031 engages with the spiral groove 10411, driving the claw seat 1041 to slide along the radial direction of the chuck 10, away from the center of the chuck 10, thereby releasing the optical rod.

[0133] The present invention provides damping force to the chuck 10 by cooperating with the second gear 202 group through the damping drive mechanism 50, and provides driving force to the chuck 10 by cooperating with the first gear 201 group 20 through the planetary gear mechanism 40. Under the coordination of the damping force, the chuck 10 is quickly locked or released so as to clamp the optical rod with a set pressure, thereby avoiding problems such as the optical rod being broken or falling off due to improper locking force, and at the same time, reducing the clamping time of the chuck 10 on the optical rod, thereby improving production efficiency. The device presets the locking force after debugging, has high repeated positioning accuracy, short clamping time, simple operation, and stable clamping.

[0134] The above is a specific implementation of the embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of this application.

Claims

1. A rotary automatic locking chuck, characterized in that: include: A chuck (10) for clamping the light rod; A first gear set (20), comprising a first gear (201) and a second gear (202) externally meshed with the first gear (201); a second gear set (30), comprising a third gear (301) coaxial with the first gear (201) and having the same structure, and a fourth gear (302) externally meshing with the third gear (301) and having the same structure as the second gear (202), the fourth gear (302) being coaxial with the second gear (202); a planetary gear mechanism (40) meshing with the first gear (201) and the third gear (301) to drive the first gear (201) to rotate and meshingly drive the second gear (202) to rotate, so that the chuck (10) is locked and reaches a set locking force value; A damping drive mechanism (50), wherein the second gear (202) is rotationally connected to the damping drive mechanism (50), and the fourth gear (302) is fixedly connected to the damping drive mechanism (50); the damping drive mechanism (50) is used to provide a damping force of a set damping force value to the chuck (10); When the locking force value is less than the damping force value, the damping drive mechanism (50) restricts the third gear (301) and the fourth gear (302) from rotating; When the locking force value is equal to or greater than the damping force value, the damping drive mechanism (50) and the planetary gear mechanism (40) directly or indirectly drive the first gear (201), the second gear (202), the third gear (301) and the fourth gear (302) to rotate synchronously, so that the chuck (10) applies a set locking force value to the optical rod and maintains a locked state or releases the optical rod.

2. The rotary automatic locking chuck according to claim 1, characterized in that: The planetary gear mechanism (40) comprises: A first planetary gear set (401) meshed with the inside of the first gear (201), wherein the center of each planetary gear of the first planetary gear set (401) is located on the circumference where the center of the first gear (201) and / or the second gear (202) is located; a first sun gear (402), located at the center of the first planetary gear set (401) and being a fixed center gear, the first sun gear (402) being meshed with the outside of the first planetary gear set (401), the center axis of the first sun gear (402) being coincident with the center axis of the first gear (201) and / or the second gear (202); a second planetary gear set (403) meshing with the inside of the third gear (301), the second planetary gear set (403) being coaxial with the planetary gears corresponding to the first planetary gear set (401), and the center of each planetary gear of the second planetary gear set (403) being located on the circumference where the center of the second gear (202) and / or the first gear (201) is located; A planetary wheel shaft seat (404), wherein the first planetary wheel set (401) and the second planetary wheel set (403) are rotatably arranged on both sides of the planetary wheel shaft seat (404) via a rotating shaft; a second sun gear (405), located at the center of the second planetary gear set (403) and being a rotating center gear, the second sun gear (405) being meshed with the outside of the second planetary gear set (403), the center axis of the second sun gear (405) being coincident with the center axis of the first gear (201) and / or the second gear (202); The first driving device (406) is used to drive the second sun gear (405) to rotate.

3. The rotary automatic locking chuck according to claim 2, characterized in that: The number of gears in the first planetary gear set (401) and the number of gears in the second planetary gear set (403) are both three.

4. The rotary automatic locking chuck according to claim 2, characterized in that: The first driving device (406) comprises: A first drive motor (4061); A first driving wheel (4062) is sleeved and fixed on one end of the output shaft of the first driving motor (4061); A first mechanical shaft (4063), the second sun gear (405) being sleeved and fixed on the first mechanical shaft (4063), and the central axis of the first mechanical shaft (4063) being parallel to the central axis of the output shaft of the first drive motor (4061); A first driven wheel (4064) is sleeved and fixed on an end of the first mechanical shaft (4063) away from the first sun wheel (402), and the first driven wheel (4064) and the first driving wheel (4062) are located in the same plane; The first transmission member is arranged around the outer circumference of the first driving wheel (4062) and the first driven wheel (4064), and the first driving wheel (4062) drives the first driven wheel (4064) through the first transmission member.

5. The rotary automatic locking chuck according to claim 4, characterized in that: The damping drive mechanism (50) comprises: A second damping drive motor (501); A second driving wheel (502) is sleeved and fixed on one end of the output shaft of the second damping driving motor (501); a second mechanical shaft (503), the second gear (202) being rotatably sleeved on the second mechanical shaft (503), the fourth gear (302) being fixedly sleeved on the second mechanical shaft (503), and the central axis of the second mechanical shaft (503) being parallel to the central axis of the output shaft of the second driving wheel (502); A second driven wheel (504) is sleeved and fixed on an end of the second mechanical shaft (503) away from the second gear (202) and / or the fourth gear (302), and the second driving wheel (502) and the second driven wheel (504) are located in the same plane; The second transmission member is arranged around the outer circumference of the second driving wheel (502) and the second driven wheel (504), and the second driving wheel (502) drives the second driven wheel (504) through the second transmission member.

6. The rotary automatic locking chuck according to claim 5, characterized in that: The first transmission member and the second transmission member are chains or synchronous belts.

7. The rotary automatic locking chuck according to claim 5, characterized in that: Also includes: The first box body (60) has a containing cavity for housing the first gear (201), the third gear (301) and the first mechanical shaft (4063); The second box (70) has a containing cavity for housing the second gear (202), the fourth gear (302) and the second mechanical shaft (503); The adjacent surfaces of the first housing (60) and the second housing (70) are at least partially connected to form a connecting portion, so as to facilitate meshing transmission between the first gear (201) and the second gear (202) and between the third gear (301) and the fourth gear (302).

8. The rotary automatic locking chuck according to any one of claims 1 to 6, characterized in that: The chuck (10) comprises: Chuck (10) body; A locking plate (102) is rotatably disposed in the chuck (10), and the locking plate (102) is fixed to a side of the second gear (202) away from the fourth gear (302); The coiled wire (103) is fixedly arranged on the locking disk (102), and a side of the coiled wire (103) away from the locking disk (102) is provided with an involute spiral line (1031); A plurality of clamping claws (104) are arranged in a circular array around the center of the chuck (10) on the chuck (10) body. When the coil wire (103) rotates, the clamping claws (104) are driven to move radially toward or away from the center of the chuck (10) body to clamp or release the optical rod.

9. The rotary automatic locking chuck according to claim 8, characterized in that: The chuck (10) body is radially provided with a plurality of claw grooves (1011) in a circular array around the center of the chuck (10), and the claws (104) include: A claw seat (1041) is slidably arranged in the claw groove (1011), guide blocks are symmetrically arranged on both sides of the inner wall of the claw groove (1011) along its length direction, and guide grooves adapted to the guide blocks are arranged on both sides of the claw seat (1041); The lower part of the claw seat (1041) is provided with a spiral groove (10411) meshing with the involute spiral line (1031); A plurality of clamping members (1042) are arranged on the clamping claw seat (1041), and the plurality of clamping members (1042) form a clamping space for clamping the light rod; A fine-tuning member (1043) is arranged on the inner side of the clamping member (1042) close to the center of the chuck (10), and the fine-tuning member (1043) at least partially extends out of the inner side of the clamping member (1042); the fine-tuning member (1043) can move along the radial direction of the chuck (10) to fine-tune the center of the chuck (10), and the fine-tuning member (1043) is made of non-metallic material.

10. The rotary automatic locking chuck according to claim 9, characterized in that: It also includes a limiting mechanism, which includes: A clamping jaw limiting plate (105) is used to prevent the clamping jaw (104) from being separated from the coil wire (103) when the clamping jaw (104) moves away from the chuck (10) in a radial direction. The clamping jaw limiting plate (105) is fixed to an end of the clamping jaw (104) away from the center of the chuck (10). The clamping jaw limiting plates (105) are distributed in a circular array around the center of the chuck (10). The outer periphery of the clamping jaw limiting plate (105) is arc-shaped, and the center of the arc is the center of the chuck (10); A travel switch is arranged at the same height as the periphery of the clamping claw limiting plate (105) and has a first installation distance with the clamping claw limiting plate (105), wherein the first installation distance is smaller than the maximum distance that the clamping claw (104) moves radially along the coiled wire (103).

Images