Rotary self-locking chuck

Abstract

The present application relates to the technical field of light bar clamping device, especially relates to a rotary automatic locking chuck, comprising: a chuck; a first gear set, comprising a first gear and a second gear meshing with the outside of the first gear; a second gear set, comprising a third gear coaxial with the first gear and identical in structure, and a fourth gear meshing with the outside of the third gear and identical in structure with the second gear; a planetary gear mechanism meshing with the inside of the first gear and the third gear; a damping driving mechanism, the second gear being rotationally connected with the damping driving mechanism, and the fourth gear being fixedly connected with the damping driving mechanism; the damping driving mechanism cooperates with the second gear set to provide damping force for the chuck, and the planetary gear mechanism cooperates with the first gear set to provide driving force for the chuck, so that the chuck is quickly locked or released, thereby avoiding the problems of broken light bars and falling light bars caused by improper locking force, and reducing the clamping time of the chuck on the light bar, and improving the production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical rod clamping device, and particularly relates to a rotary automatic locking chuck. BACKGROUND

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

[0003] In the prior art, the chuck is usually manually clamped or pneumatically clamped, but there are certain technical defects: for example, the locking force is difficult to accurately control, which can easily cause the optical rod to break due to excessive locking force, or the optical rod to fall off during processing due to insufficient locking force, affecting the smooth progress of processing, and even causing product scrap and equipment damage. At the same time, the clamping process of the traditional chuck often takes a long time, which reduces the production efficiency and increases the production cost. SUMMARY

[0004] To solve at least one of the above technical problems, the present application provides a rotary automatic locking chuck to solve the problems of unpre-set locking force of the chuck, difficult accurate control of the locking force causing broken rods, and long clamping time of the chuck affecting production efficiency.

[0005] To achieve the above purpose, the present application adopts the following technical solutions:

[0006] A rotary automatic locking chuck, comprising:

[0007] a chuck for clamping an optical rod;

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

[0009] a second gear set comprising a third gear coaxial with the first gear and having the same structure, 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 inside of the first gear and the third gear, for driving the first gear to rotate and meshing the second gear to rotate, so that the chuck is locked and reaches a set locking force value;

[0011] a damping driving mechanism, the second gear being rotationally connected to the damping driving mechanism, and the fourth gear being fixedly connected to the damping driving mechanism; the damping driving mechanism is used to provide a damping force with a set damping force value to the chuck;

[0012] When the locking force value is less than the damping force value, the damping driving mechanism limits rotation of the third gear and the fourth gear;

[0013] When the locking force value is equal to or greater than the damping force value, the damping driving mechanism directly or indirectly drives the first gear, the second gear, the third gear and the fourth gear to rotate synchronously with the planetary gear mechanism, so that the chuck applies a 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, which is internally meshed with the first gear, each planetary gear of the first planetary gear set being located on a circumference of a center of the first gear and / or the second gear;

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

[0017] A second planetary gear set, which is internally meshed with the third gear, the second planetary gear set being coaxial with corresponding planetary gears of the first planetary gear set, each planetary gear of the second planetary gear set being located on a circumference of a center of the second gear and / or the first gear;

[0018] A planetary gear shaft seat, the first planetary gear set and the second planetary gear set being arranged on both sides of the planetary gear shaft seat through a rotating shaft;

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

[0020] A first driving device for driving 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 driving motor;

[0024] A first driving motor;

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

[0026] a first driven gear, fixedly sleeved on one end of the first mechanical shaft away from the first sun gear, the first driven gear and the first driving gear being located in the same plane;

[0027] a first transmission member, arranged around the outer periphery of the first driving gear and the first driven gear, the first driving gear driving the first driven gear through the first transmission member.

[0028] Preferably, the damping driving mechanism comprises:

[0029] a second damping driving motor;

[0030] a second driving gear, fixedly sleeved on one end of an output shaft of the second damping driving motor;

[0031] a second mechanical shaft, the second gear rotatingly sleeved on the second mechanical shaft, the fourth gear fixedly sleeved on the second mechanical shaft, and a central axis of the second mechanical shaft being parallel to a central axis of an output shaft of the second driving gear;

[0032] a second driven gear, fixedly sleeved on one end of the second mechanical shaft away from the second gear and / or the fourth gear, the second driving gear and the second driven gear being located in the same plane;

[0033] a second transmission member, arranged around the outer periphery of the second driving gear and the second driven gear, the second driving gear driving the second driven gear through the second transmission member.

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

[0035] Preferably, further comprising:

[0036] a first box body having a containing cavity for covering the first gear, the third gear and the first mechanical shaft;

[0037] a second box body having a containing cavity for covering the second gear, the fourth gear and the second mechanical shaft;

[0038] the first box body and the second box body being at least partially communicated to form a communication part, so as to facilitate the meshing transmission of the first gear and the second gear and the third gear and the fourth gear.

[0039] Preferably, the chuck comprises:

[0040] a chuck body;

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

[0042] A coiled wire is fixedly mounted on the locking disk, wherein a side of the coiled wire away from the locking disk is provided with an involute helix;

[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 move radially toward or away from the center 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, and guide blocks are symmetrically provided on both sides of the inner wall of the claw groove along its length direction. Guide grooves adapted to the guide blocks are provided on both sides of the claw seat; a spiral groove meshing with the involute helix is ​​provided at the lower part of the claw seat;

[0046] A plurality of clamping members are provided on the claw seat, wherein the 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 near 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, a limiting mechanism is further included, and the limiting mechanism includes:

[0049] a claw limiting plate, used to prevent the claw from separating from the wire coil when moving radially away from the chuck, the limiting plate being fixed to one end of the claw away from the center of the chuck, the claw limiting plates being distributed in a circular array around the center of the chuck, the outer circumference of the claw limiting plate being arc-shaped, and the center of the arc being 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. The first installation distance is smaller than the maximum distance that the clamping claw moves along the radial direction of the wire coil.

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

[0052] 1. The present application provides damping force to the chuck by damping driving mechanism cooperating with the second gear set, and provides driving force to the chuck by planetary gear mechanism cooperating with the first gear set, and under the cooperation of damping force, the chuck is quickly locked or released to clamp the optical rod with a set pressure, so as to avoid the problems of broken rod and falling of the optical rod caused by improper locking force, and at the same time, the clamping time of the chuck to the optical rod is reduced, and the production efficiency is improved. The device has high repeat positioning accuracy, short clamping time, simple operation and stable clamping after debugging.

[0053] 2. The present application provides first planetary gear set and second planetary gear set rotating coaxially, so that the first gear and the third gear meshed with them can rotate independently or be stationary or rotate synchronously, so as to complete the locking action of the optical rod or maintain the locking state or release action.

[0054] 3. The present application provides a limiting mechanism, so that the optical rod slides away from the center of the chuck after stretching to release the optical rod. The wire continuously rotates, and the involute helix on the surface is engaged with the helical groove at the lower part of the claw holder, driving the claw holder to move away from the radial direction of the chuck. When the outer periphery of the claw limiting plate touches the travel switch, the first driving motor is turned off through the travel switch, so as to avoid the claw and the wire from being separated. BRIEF DESCRIPTION OF DRAWINGS

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

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

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

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

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

[0060] Figure 6 It is an exploded view of the gear part in the planetary gear mechanism in the present application;

[0061] Figure 7 It is a perspective view of a rotary automatic locking chuck

[0062] Figure 8 It is a perspective view of the chuck in the present application;

[0063] Figure 9 It is an exploded view of the chuck in the present application;

[0064] Fig. 10, chuck; 101, chuck body; 1011, jaw groove; 102, locking disc; 103, disc wire; 1031, involute spiral; 104, jaw; 1041, jaw seat; 10411, spiral groove; 1042, clamping piece; 1043, fine adjustment piece; 105, jaw 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 gear; 4063, first mechanical shaft; 4064, first driven gear; 50, damping driving mechanism; 501, second damping driving motor; 502, second driving gear; 503, second mechanical shaft; 504, second driven gear; 60, first box body; 70, second box body; 80, first shroud; 90, second shroud. DETAILED DESCRIPTION

[0065] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application.

[0066] Please refer to Figures 1-9 Fig. 10, a rotary automatic locking chuck 10, comprising:

[0067] The chuck 10 is used for clamping an optical rod;

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

[0069] The second gear set 30 comprises a third gear 301 coaxial with the first gear 201 and having the same structure, and a fourth gear 302 engaged with the outside of 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;

[0070] The planetary gear mechanism 40 is engaged with the inside of the first gear 201 and the third gear 301, used for driving the first gear 201 to rotate, and engaging the second gear 202 to rotate, so that the chuck 10 is locked and reaches a set locking force value;

[0071] The damping driving mechanism 50 is rotationally connected with the second gear 202 and fixedly connected with the fourth gear 302; the damping driving mechanism 50 is used for providing the chuck 10 with a damping force with a set damping force value;

[0072] When the locking force value is less than the damping force value, the damping driving mechanism 50 limits the rotation of the third gear 301 and the fourth gear 302;

[0073] When the locking force value is equal to or greater than the damping force value, the damping driving mechanism 50 directly or indirectly drives 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 the locking state or releases the optical rod.

[0074] In the embodiment, the damping driving mechanism 50 cooperates with the second gear 202 group to provide the chuck 10 with a damping force, and the planetary gear mechanism 40 cooperates with the first gear 201 group 20 to provide the chuck 10 with a driving force, and under the cooperation of the damping force, the chuck 10 is quickly locked or released to clamp the optical rod with a set pressure, so as to avoid the problems of broken optical rod and falling caused by improper locking force, and reduce the clamping time of the chuck 10 on the optical rod and improve the production efficiency.

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

[0076] Please refer to Figures 4-6 The planetary gear mechanism 40 in the embodiment includes:

[0077] The first planetary gear set 401 is internally meshed with the first gear 201, and the centers of the planetary gears of the first planetary gear set 401 are located on the circumference of the circle center of the first gear 201 and / or the second gear 202; 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 externally meshed with 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 internally meshed with the third gear 301, and the second planetary gear set 403 is coaxial with the corresponding planetary gears of the first planetary gear set 401, and the centers of the planetary gears of the second planetary gear set 403 are located on the circumference of the circle center of the second gear 202 and / or the first gear 201; the planetary gear shaft seat 404 is provided on both sides of the planetary gear shaft seat 404 through the rotating shafts of the first planetary gear set 401 and the second planetary gear set 403; 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 externally meshed with 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. Among them, 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 the locked state under the driving of the second planetary gear set 403 after reaching the 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 externally meshed with the second sun gear 405 rotates, and at the same time 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, and since the first sun gear 402 is a fixed center gear, that is, the first sun gear 402 does not rotate itself, therefore, the first planetary gear set 401 rotates itself, and at the same time revolves along the inner tooth track of the first gear 201, thereby driving the first gear 201 to rotate, and further driving the second gear 202 to rotate through meshing transmission. It can be understood that by controlling the forward rotation or reverse rotation of the first driving device 406, and 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 the locked state with the 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 in the first planetary gear set 401 and the second planetary gear set 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] First drive 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] The first mechanical shaft 4063 and the second sun gear 405 are sleeved and fixed on the first mechanical shaft 4063 . The central axis of the first mechanical shaft 4063 is parallel to the central axis of the output shaft of the first drive motor 4061 .

[0090] The first driven gear 4064 is sleeved and fixed on the end of the first mechanical shaft 4063 away from the first sun gear 402 . The first driven gear 4064 and the first driving gear 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 . The first driving wheel 4062 transmits power to the first driven wheel 4064 via 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 synchronous belt, using sprockets or synchronous gears.

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

[0094] a second damping driving motor 501;

[0095] a second driving wheel 502, sleeved and fixed to one end of an output shaft of the second damping driving motor 501;

[0096] a second mechanical shaft 503, the second gear 202 being rotatably sleeved on the second mechanical shaft 503, and the fourth gear 302 being fixedly sleeved on the second mechanical shaft 503, 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;

[0097] a second driven wheel 504, sleeved and fixed to one end of the second mechanical shaft 503 away from the second gear 202 and / or the fourth gear 302, the second driving wheel 502 and the second driven wheel 504 being located in the same plane;

[0098] a second transmission member, wound around the outer periphery of the second driving wheel 502 and the second driven wheel 504, the second driving wheel 502 driving the second driven wheel 504 through the second transmission member.

[0099] Specifically, in order to provide a certain damping force, the above-mentioned second damping driving motor 501 adopts a damping motor. The damping motor preferably adopts mechanical damping, i.e. corresponding mechanical damping devices, such as friction plates, springs, damping plates, damping rods, etc. are configured on the motor. At the same time, the damping force of the second damping driving motor 501 can be adjusted by adjusting the mechanical damping devices, thereby realizing the adjustment of the chuck 10 locking force preset value.

[0100] The above-mentioned second transmission member can be a chain or a synchronous belt, and the corresponding second driving wheel 502 and the second driven wheel 504 should be adapted to the chain or the synchronous belt, adopting a chain wheel or a synchronous gear.

[0101] It should be noted that the working principles of the above-mentioned first driving motor 4061 and the second damping driving motor 501 and the connection modes between them and the gears and transmission mechanisms belong to the prior art, and will not be described herein.

[0102] Please refer to Figure 7 As shown, in order to facilitate the installation and protection of the gears, in the embodiment, the first gear 201, the third gear 301 and the first mechanical shaft 4063 are externally covered with a first box body 60; wherein the first sun gear 402 is fixed with the first box body 60 to realize the function of fixing the central wheel. The first mechanical shaft 4063 partially extends out of the first box body 60, and the first driven wheel 4064 is connected with the part of the first mechanical shaft 4063 extending out, and at the same time, the first driven wheel 4064 is externally covered with a first protective cover 80 to protect the first driven wheel 4064, and the first protective cover 80 is detachably fixed with the first box body 60.

[0103] The first driving motor 4061 is fixedly installed outside the first shroud 80 by the first mounting plate, and an output shaft of the first driving motor 4061 extends out of a 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 sleeved on the first driving wheel 4062 and the second driving wheel 502, a through hole is arranged on a side of the first shroud 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 by the second box 70, and a portion of the second mechanical shaft 503 extends out of the second box 70 and is connected to the second driven wheel 504. Meanwhile, the second shroud 90 is arranged below the second box 70, and the second shroud 90 covers the second driving wheel 502 and the second driven wheel 504 inside. The second damping driving motor 501 is arranged outside the second shroud 90, and an output shaft of the second damping driving motor 501 extends into the second shroud 90 and is connected to the second driving wheel 502.

[0106] In order to facilitate the first gear 201 to mesh with the second gear 202 and the third gear 301 to mesh with the fourth gear 302, at least a portion of a surface of the first box 60 adjacent to the second box 70 is provided with a through hole to form a communication part.

[0107] Please refer to Figure 1 、 Figure 2 、 Figure 8 and Figure 9 , the chuck 10 in the embodiment includes:

[0108] a chuck body 10;

[0109] a locking disc 102 rotatably arranged in the chuck body 10, and the locking disc 102 is fixed to a surface of the second gear 202 away from the fourth gear 302;

[0110] a disc wire 103 fixedly arranged on the locking disc 102, and a gradually opened spiral line 1031 is arranged on a surface of the disc wire 103 away from the locking disc 102;

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

[0112] The chuck body 10 is provided with a plurality of clamping claw grooves 1011 arranged in a circular array around the center of the chuck 10 in a radial direction, and the clamping claw 104 includes:

[0113] The claw base 1041 is slidingly arranged in the claw groove 1011, and the inner wall of the claw groove 1011 is symmetrically provided with a guide block along the length direction, and the two sides of the claw base 1041 are provided with a guide groove matched with the guide block; the lower part of the claw base 1041 is provided with a spiral groove 10411 matched with the involute spiral line 1031;

[0114] A plurality of clamping pieces 1042 are arranged on the claw base 1041, and the plurality of clamping pieces 1042 form a clamping space for clamping the optical rod;

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

[0116] The chuck 10 in the embodiment is driven by the driving device to lock or release the optical rod, so as to stretch the optical rod and release the optical rod after the stretching is completed.

[0117] It should be noted that the clamping piece 1042 in the embodiment is L-shaped, wherein the L-shaped clamping piece 1042 includes a fixed segment detachably fixed with the claw base 1041 and a clamping segment perpendicular to the fixed segment. One side of the fixed end adjacent to the claw base 1041 is provided with a clamping block, and the corresponding position of the claw base 1041 is provided with a clamping groove corresponding to the clamping block. At the same time, the fixed segment and the claw base 1041 are fixed by bolts or other fasteners. In this way, the wire 103 of the chuck 10 rotates to drive the claw base 1041 to move along the radial direction of the chuck 10, and when the optical rod is clamped, the optical rod will exert an opposite force on the clamping piece 1042. At the same time, this opposite force also moves along the radial direction of the chuck 10, and due to the structure of the clamping block and the clamping groove, the displacement of the clamping piece 1042 along the radial direction of the chuck 10 or the deflection in a certain angle direction with the radial direction can be effectively avoided, thereby effectively improving the stability of the chuck 10 clamping the optical rod and avoiding the problem of unstable clamping of the optical rod causing the optical rod to fall off.

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

[0119] In order to facilitate the installation and adjustment of the fine adjustment piece 1043, in the embodiment, the inner side of the vertical segment of the clamping piece 1042 is provided with a mounting groove,

[0120] Considering that the chuck 10 is mostly installed as a whole, due to machining precision and assembly tolerance, the chuck 10 can have radial runout. At this time, the center of the chuck 10 can be adjusted by adjusting the fine adjustment piece 1043. Meanwhile, the fine adjustment piece 1043 made of non-metallic material can increase the friction between the clamping jaw 104 and the optical rod when the chuck 10 is locked, and can also avoid scratching the surface of the optical rod. In the embodiment, the fine adjustment piece 1043 is made of polyether ether ketone. Of course, according to actual operation needs, other suitable materials can be selected to achieve the balance of locking and scratch prevention. The present application does not limit this.

[0121] Please refer to Figures 7-9 As shown in the figure, in order to prevent the clamping jaw 104 from disengaging from the wire 103, the chuck 10 in the embodiment further comprises a limiting mechanism, which comprises:

[0122] A clamping jaw limiting plate 105 is used to prevent the clamping jaw 104 from disengaging from the wire 103 when moving away from the center of the chuck 10 in the radial direction. The limiting plate is fixed to one end of the clamping jaw 104 away from the center of the chuck 10. The clamping jaw limiting plate 105 is arranged in an annular 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.

[0123] A travel switch is arranged at the same height on the outer periphery of the clamping jaw limiting plate 105 and has a first installation distance from the clamping jaw limiting plate 105. The first installation distance is less than the maximum distance of the radial movement of the clamping jaw 104 along the wire 103.

[0124] Specifically, after the optical rod is stretched, the clamping jaw 104 slides away from the center of the chuck 10 to release the optical rod. The wire 103 continues to rotate, and the involute helix 1031 on the surface of the wire 103 engages with the helical groove 10411 at the lower part of the clamping jaw seat 1041 to drive the clamping jaw seat 1041 to move away from the center of the chuck 10 in the radial direction. When the outer periphery of the clamping jaw limiting plate 105 touches the travel switch, the first driving motor 4061 is turned off through the travel switch, so as to avoid disengagement of the clamping jaw 104 from the wire 103. The working principle of the travel switch for controlling the start and stop of the motor and the circuit connection relationship belong to the prior art, and will not be described here.

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

[0126] 1. Optical rod clamping

[0127] The first driving motor 4061 is started, 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, and then drives the second planetary gear set 403 to rotate 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 rotation of the first planetary gear set 401 drives the first gear 201 to rotate, meshing with the second gear 202 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 converges radially along the chuck 10 (slides toward the center of the chuck 10), and the chuck 10 is locked. When the locking force value of the chuck 10 exceeds 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 shut down, and the second driving wheel 502 drives the second driven wheel 504 and the second mechanical shaft 503 to rotate through the second transmission member, thereby driving the fourth gear 302 to rotate and meshing with the third gear 301. The third gear 301 internally meshes with the second planetary gear set 403 to rotate, which in turn drives the coaxial first planetary gear set 401 to rotate, meshing with the first gear 201 and the third gear 301 to rotate synchronously, and further meshing with the second gear 202 and the fourth gear 302 to rotate synchronously. This allows the chuck 10 to clamp the optical rod with the set locking force, maintaining 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 between these components is the same as that during the optical rod clamping process, and during this process, the third gear 301 and the fourth gear 302 remain stationary. 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 opposite directions, thereby driving the locking disk 102 and the coil wire 103 to rotate in opposite directions. The involute helix 1031 engages with the spiral groove 10411, driving the claw seat 1041 to slide radially along the chuck 10, away from the center of the chuck 10, thereby releasing the optical rod.

[0133] The present application provides damping force for the chuck 10 by the damping driving mechanism 50 cooperating with the second gear 202 group, provides driving force for the chuck 10 by the planetary gear mechanism 40 cooperating with the first gear 201 group 20, and performs fast locking or releasing action on the chuck 10 under the cooperation of the damping force, so as to clamp the optical rod by setting the pressure, thereby avoiding the problems of broken optical rod and falling caused by improper locking force, and reducing the clamping time of the chuck 10 on the optical rod, and improving the production efficiency. The device has high repeat positioning accuracy, short clamping time, simple operation, and stable clamping after debugging.

[0134] The above is the specific implementation of the embodiment of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A rotary automatic locking chuck, characterized in that: include: A chuck (10) for holding 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 as the first gear (201), and a fourth gear (302) externally meshed 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 meshing with the second gear (202) to rotate, so as to lock the chuck (10) and achieve 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 rotation of the third gear (301) and the fourth gear (302); 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) meshing with the interior of the first gear (201), wherein the centers of the planetary gears of the first planetary gear set (401) are located on the circumference of the circle where the centers of the first gear (201) and / or the second gear (202) are 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 interior 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), the centers of the planetary gears of the second planetary gear set (403) being located on the circumference of the circle center of the second gear (202) and / or the first gear (201); A planetary gear shaft seat (404), wherein 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) via a rotating shaft; a second sun gear (405) located at the center of the second planetary gear set (403) and serving as a rotating center gear, the second sun gear (405) being meshed with the exterior of the second planetary gear set (403), the central axis of the second sun gear (405) coinciding 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.

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 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), 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) sleeved and fixed on an end of the first mechanical shaft (4063) away from the first sun gear (402), wherein 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) transmits the power to 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 drive 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) sleeved and fixed on an end of the second mechanical shaft (503) away from the second gear (202) and / or the fourth gear (302), wherein 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 housing (60) has a receiving cavity for housing the first gear (201), the third gear (301) and the first mechanical shaft (4063); The second housing (70) has a receiving 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 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 disk (102) is rotatably disposed in the chuck (10), and the locking disk (102) is fixed to a side of the second gear (202) away from the fourth gear (302); A coiled wire (103) is fixedly mounted on the locking disk (102), and a side of the coiled wire (103) away from the locking disk (102) is provided with an involute helical line (1031); 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 light 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 an annular 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), and guide blocks are symmetrically provided 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 provided on both sides of the claw seat (1041); The lower portion of the claw seat (1041) is provided with a spiral groove (10411) that meshes with the involute helix (1031); A plurality of clamping members (1042) are arranged on the 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) for preventing the clamping jaw (104) from being separated from the coiled 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 plate (105) is 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).

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