Rotary force transmission device and stepless regulation electric clamping system

Abstract

The utility model relates to the technical field of chuck driving, in particular to a rotary force transmission device and a stepless regulation electric clamping system. The rotary force transmission device is provided with a lead screw, a lead screw nut and a feeding channel, the feeding channel is arranged in the rotary force transmission device, the input end and the output end of the feeding channel penetrate through the front end and the rear end of the rotary force transmission device respectively, and the feeding channel is used for conveying a workpiece to the clamping jaw. The lead screw nut is matched with the lead screw, when the lead screw rotates, the lead screw nut can horizontally move front and back, and the front-back horizontal movement of the lead screw nut is used for driving the clamping jaw to clamp or loosen a workpiece, so that the clamping jaw clamps or releases the workpiece. A workpiece is generally conveyed to the clamping jaw through the feeding channel in the rotary force transmission device, the workpiece is clamped or released through the clamping or releasing state of the clamping jaw, and feeding, clamping, releasing and other operations can be better matched through the feeding mode.

Description

Technical Field

[0001] The utility model relates to the technical field of chuck driving, in particular to a rotary force transmitter and a stepless adjustment electric clamping system. Background Technique

[0002] In the prior art, CN114367683A discloses a rotary electric servo push-pull cylinder for a numerically controlled lathe, which is composed of a cylinder body component, a motor base component, a clutch component, and a reducer component. Among them, the servo motor provides a power source, the motor base component is sleeved on the cylinder body component, and in the cylinder body component, the clutch component and the reducer component drive the ball screw shaft to generate axial movement. The ball screw shaft is connected to the pull rod of the machine tool spindle fixture, and the flange plate is connected to the machine tool spindle to rotate synchronously. The clutch component and the reducer component are fixedly connected. Under the traction of the electromagnetic chuck, the clutch moving ring will move towards the clutch synchronous pulley, transmit the rotation of the servo motor to the reducer component, and then the reducer output steel balls in the raceway at the output end of the reducer are transmitted to the ball nut, and the ball nut drives the ball screw shaft to perform axial movement. It plays a guiding role in the axial movement of the ball screw shaft, so that the ball screw shaft and the cylinder always rotate synchronously. The ball screw shaft makes an axial displacement in the cylinder, and the spindle pull rod is also connected with a machine tool fixture (also a jaw). The machine tool fixture is opened and closed by pushing and pulling the machine tool fixture through the spindle pull rod, and the clamping or releasing state of the machine tool fixture is switched to clamp or release the workpiece.

[0003] However, in the prior art: generally, an external manipulator or conveying mechanism is used to send the workpiece to the jaw, and the clamping or releasing state of the jaw is used to clamp or release the workpiece. Generally, such a feeding method has a low degree of cooperation with operations such as feeding, clamping, and releasing. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, a rotary force transmitter and a stepless adjustment electric clamping system are provided.

[0005] On the one hand, the utility model provides a rotary force transmitter, which is provided with a lead screw, a lead screw nut, and a feeding channel. The feeding channel is arranged inside the rotary force transmitter. The input end and the output end of the feeding channel respectively penetrate through the front and rear ends of the rotary force transmitter. The feeding channel is used to convey the workpiece to the jaw; the lead screw nut is matched with the lead screw. When the lead screw rotates, the lead screw nut can move back and forth. The back-and-forth movement of the lead screw nut is used to drive the jaw to clamp or loosen, so that the jaw clamps or releases the workpiece.

[0006] Preferably, the feeding channel penetrates through the lead screw, and the feeding channel is arranged coaxially with the lead screw.

[0007] Preferably, the rotary force transmitter is further provided with a first clutch mechanism and a second clutch mechanism. Both the first clutch mechanism and the second clutch mechanism have a combined state and a separated state, and the combined state and the separated state of the two are independent of each other. The first clutch mechanism is used to drive the lead screw to rotate. When the first clutch mechanism is in the combined state, it is in transmission connection with the lead screw, and when the first clutch mechanism is in the separated state, it is disengaged from the transmission connection with the lead screw. The combined state and the separated state of the second clutch mechanism are used to lock the clamping state of the clamping jaw or to make the clamping jaw open and close freely.

[0008] Preferably, the rotary force transmitter is further provided with a first clutch mechanism and a speed reducer. The output end of the speed reducer is connected to the lead screw. The input end of the speed reducer is provided with a speed reduction input shaft. The first clutch mechanism is sleeved outside the speed reduction input shaft. The speed reduction input shaft is in transmission connection or disengaged from the drive motor assembly through the first clutch mechanism. The speed reduction input shaft, the speed reducer and the lead screw are coaxially arranged, and the feeding channel is coaxially arranged with the three and penetrates through the three.

[0009] On the other hand, the present utility model provides a stepless adjustment electric clamping system. The stepless adjustment electric clamping system includes a drive motor assembly, a machine tool main body, a clamping jaw and the above-mentioned rotary force transmitter. The machine tool main body includes a pull rod and a main shaft. The rotary force transmitter is connected to the pull rod. The other end of the pull rod is connected to the clamping jaw. The pull rod is used to drive the clamping jaw to open and close. The drive motor assembly and the rotary force transmitter can be in transmission connection or disengaged from each other. The rotary force transmitter and the main shaft of the machine tool main body can be in transmission connection or disengaged from each other. The feeding channel sequentially penetrates through the interiors of the drive motor assembly, the rotary force transmitter and the pull rod. The input end and the output end of the feeding channel are respectively arranged on the drive motor assembly and the pull rod, and the feeding channel is located at the connection between the pull rod and the clamping jaw.

[0010] Preferably, the pull rod is located in front of the lead screw. The pull rod and the lead screw are coaxially arranged. The feeding channel axially penetrates through the pull rod and the lead screw. One end of the lead screw nut close to the pull rod is connected with a pull rod connecting shaft. The lead screw nut is sleeved outside the lead screw. The pull rod connecting shaft is sleeved on the pull rod.

[0011] Preferably, the rotary force transmitter is further provided with a first clutch mechanism, a second clutch mechanism and a speed reducer. The output end of the speed reducer is connected to the lead screw. The input end of the speed reducer is provided with a speed reduction input shaft. The first clutch mechanism and the second clutch mechanism are sleeved outside the speed reduction input shaft. The speed reduction input shaft is in transmission connection or disengaged from the motor rotating shaft of the drive motor assembly through the first clutch mechanism. The motor rotating shaft, the speed reduction input shaft, the speed reducer and the lead screw are coaxially arranged, and the feeding channel is coaxially arranged with the four and penetrates through the four.

[0012] Preferably, the parts of the feeding channel located at the motor rotating shaft, the reduction input shaft, the reduction gear, the lead screw and the pull rod are all cylindrical.

[0013] Preferably, the parts of the feeding channel located at the motor rotating shaft, the reduction input shaft, the reduction gear, the lead screw and the pull rod are sequentially connected to each other.

[0014] Preferably, a main housing and a protective housing sleeved outside the main housing are further arranged outside the rotary force transmitter. The lead screw and the lead screw nut are arranged in the main housing. A plurality of positioning mechanisms are further arranged on the outer periphery of the protective housing. The positioning mechanisms penetrate through the protective housing in the radial direction and the length of the positioning mechanisms extending into the protective housing is adjustable. One end of the protective housing where the positioning mechanisms are located supports the main housing.

[0015] The rotary force transmitter of the present utility model realizes the conversion of the torque of rotation into the acting force of axial movement through the cooperation of the lead screw nut and the lead screw. Generally, a workpiece is sent to the clamping jaw by the feeding channel in the rotary force transmitter, and the clamping or releasing of the workpiece is realized by the clamping or loosening state of the clamping jaw. Such a feeding method can better coordinate operations such as feeding, clamping and releasing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other objects, features and advantages of the present utility model will become clearer through the preferred embodiments of the present utility model shown in the drawings. The same reference numerals in all the drawings indicate the same parts, and the drawings are not deliberately drawn to scale in actual size, and the focus is on showing the gist of the present utility model.

[0017] Figure 1 Schematic diagram of the stepless adjustment electric clamping system provided for the embodiment;

[0018] Figure 2 For Figure 1 Partial structural schematic diagram.

[0019] Drive motor assembly 1, rotary force transmitter 2, machine tool main body 4, motor 11, reduction gear 12, lead screw 21, lead screw nut 22, pull rod connecting shaft 23, machine tool spindle 41, pull rod 42, spindle housing 43, first clutch mechanism 350, second clutch mechanism 360, reduction input shaft 121, main housing 36, transition disk 50, protective housing 60, positioning mechanism 61. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0021] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component and integrated with it, or there may be an intermediate component. The terms "installed", "one end", "the other end" and similar expressions used in this article are only for illustrative purposes.

[0022] On the one hand, the present utility model provides a rotary force transmitter 2, which is provided with a lead screw 21, a lead screw nut 22 and a feeding channel. The feeding channel is arranged inside the rotary force transmitter 2. The input end and the output end of the feeding channel respectively penetrate through the front and rear ends of the rotary force transmitter 2. The feeding channel is used to convey the workpiece to the jaw; the lead screw nut 22 is matched with the lead screw 21. When the lead screw 21 rotates, the lead screw nut 22 can move back and forth. The back-and-forth movement of the lead screw nut 22 is used to drive the jaw to clamp or loosen, so that the jaw clamps or releases the workpiece. The above-mentioned forward and backward movement takes the moving direction of the lead screw nut 22 as a reference, and moving in the direction of the machine tool spindle 41 is forward movement. The lead screw 21 is drivingly connected to the driving motor assembly 1. The rotation of the motor 11 assembly drives the rotation of the lead screw 21. The rotary force transmitter 2 converts the rotational torque into an axial acting force through the matching of the lead screw nut 22 and the lead screw 21. Generally, the workpiece is conveyed to the jaw by the feeding channel inside the rotary force transmitter 2, and the clamping or releasing state of the jaw is used to clamp or release the workpiece. Such a feeding method can better coordinate the operations of feeding, clamping and releasing.

[0023] In a preferred embodiment, the feeding channel penetrates through the lead screw 21, and the feeding channel is coaxially arranged with the lead screw 21. The lead screw 21 generally adopts a hollow integral forming structure. Since the lead screw 21 rotates, the feeding at this position of the feeding channel is not easily affected by the rotation of the lead screw 21, and it is more convenient to arrange the feeding channel.

[0024] Another embodiment of the present utility model further provides a non-force-releasing rotary force transmitter 2, which is also provided with a first clutch mechanism 350 and a second clutch mechanism 360. Both the first clutch mechanism 350 and the second clutch mechanism 360 have a combined state and a separated state, and their combined state and separated state are independent of each other; the first clutch mechanism 350 is used to drive the lead screw 21 to rotate. When the first clutch mechanism 350 is in the combined state, it is in transmission connection with the lead screw 21, and when the first clutch mechanism 350 is in the separated state, it is disengaged from the transmission connection with the lead screw 21; the combined state and separated state of the second clutch mechanism 360 are used to lock the clamping state of the jaws or to make the jaws open and close freely. Since the combined state and separated state of the first clutch mechanism 350 and the second clutch mechanism 360 are independent of each other, when the first clutch is in the combined state and is in transmission connection with the lead screw 21, it can drive the jaws to close inward and be in the clamped state, clamping the workpiece. Then, the clamping state of the jaws is locked by the second clutch mechanism 360, and when the first clutch mechanism 350 is in the separated state, the drive motor assembly 1 is disengaged from the transmission connection with the lead screw 21. At this time, it is ensured that the jaws hold the workpiece without force release. Further, a part of the second clutch mechanism 360 is fixed to the outer shell of the reducer, and another part of the second clutch mechanism 360 is fixed to the input end of the reducer. The outer shell of the reducer is then fixedly connected to the machine tool spindle 41. When the first clutch mechanism 350 is in the separated state, the drive motor assembly 1 is in a free state and is not linked with the rotary force transmitter 2, and the machine tool spindle 41 is linked with the rotary force transmitter 2, ensuring that the clamping state of the jaws is locked. The rotation of the machine tool spindle 41 can drive the jaws and the workpiece therein to rotate for processing. Therefore, the present utility model does not require a rotating external tool to perform rotary processing on the workpiece, which reduces the cost investment.

[0025] More specifically, the first clutch mechanism 350 and the second clutch mechanism 360 have a suction state or a disconnection state. Their combined state and separated state are actually realized by the suction state or disconnection state of the clutch. This part can refer to the prior art. When the second clutch mechanism 360 is in the suction state, the machine tool spindle 41 rotates synchronously with the main housing 36, the outer shell of the reducer 12, and the input end of the reducer 12 in sequence; when the second clutch mechanism 360 is in the disconnection state, the outer shell of the reducer 12 and the input end of the reducer 12 are disengaged from the synchronous rotation connection.

[0026] In a preferred embodiment, the rotary force transmitter 2 is further provided with a first clutch mechanism 350 and a reducer. The output end of the reducer is connected to the lead screw 21, and the input end of the reducer is provided with a reduction input shaft 121. The first clutch mechanism 350 is sleeved outside the reduction input shaft 121. The reduction input shaft 121 is in transmission connection with or disengaged from the drive motor assembly 1 through the first clutch mechanism 350. The reduction input shaft 121, the reducer, and the lead screw 21 are coaxially arranged, and the feeding channel is coaxially arranged with the three and penetrates through the three.

[0027] The present utility model further provides a rotary force transmitter according to another embodiment.

[0028] In addition to a power connection part, a fixing part for a machine tool spindle 41, a first clutch mechanism 350, a lead screw 21 and a lead screw nut 22, the rotary force transmitter 2 is provided with a lead screw nut 22 that is matched with the lead screw 21. When the lead screw 21 rotates, the lead screw nut 22 can move back and forth. The drive connection part is located at the input end of the lead screw 21, and the fixing part for the machine tool spindle 41 is close to the output end of the lead screw 21. The first clutch mechanism 350 enables the power connection part to be in transmission connection or out of transmission connection with the lead screw 21. It further includes a speed reducer which is arranged between the first clutch mechanism 350 and the lead screw 21. The input end of the speed reducer is in transmission connection or out of transmission connection with the power connection part through the first clutch mechanism 350, and the output end of the speed reducer is connected to the lead screw 21.

[0029] In a preferred embodiment, the rotary force transmitter 2 further includes a second clutch mechanism 360 which is arranged between the input end of the speed reducer and the power connection part. The input end of the speed reducer is in transmission connection or out of transmission connection with the fixing part for the machine tool spindle 41 through the second clutch mechanism 360. Through the first clutch mechanism 350 and the second clutch mechanism 360, it is ensured that the clamping process and the rotation process of the machine tool spindle 41 can be separated. The axial force generated during the push / pull action will directly act on the machine tool spindle 41 instead of being borne by the bearing, making the structure of this embodiment have higher reliability. At the same time, the second clutch mechanism 360 also has a longer service life.

[0030] In a preferred embodiment, the rotary force transmitter 2 further includes a main housing 36. One end of the main housing 36 is used for fixedly installing the machine tool spindle 41, and the other end is fixed to the housing of the speed reducer. The main housing 36 is installed and fixed on the machine tool spindle 41 and can rotate synchronously at a high speed with the machine tool spindle 41 during the processing. One part of the second clutch mechanism 360 is fixed to the housing of the speed reducer, and the other part of the second clutch mechanism 360 is fixed to the input end of the speed reducer. The input end of the speed reducer is a speed reduction input shaft 121. The second clutch mechanism 360 has an engaged state or a disengaged state. When in the engaged state, the machine tool spindle 41 rotates synchronously with the main housing 36, the housing of the speed reducer and the input end of the speed reducer (i.e., the speed reduction input shaft 121) in sequence. When in the disengaged state, the housing of the speed reducer and the input end of the speed reducer are disengaged from the synchronous rotation connection, that is, the speed reduction input shaft 121, the housing of the speed reducer, the main housing 36 and the machine tool spindle 41 are disengaged from the transmission connection, so as to ensure that the lead screw 21 is disengaged from the above three. At this time, if the first clutch mechanism 350 is engaged, the motor 11 and the speed reduction input shaft 121 are in transmission connection through the first clutch mechanism 350, and the forward and reverse rotations of the motor 11 can realize the clamping and loosening of the chuck.

[0031] On the other hand, the present utility model provides a stepless adjustment electric clamping system. The stepless adjustment electric clamping system includes a drive motor assembly 1, a machine tool main body 4, a jaw, and the above-mentioned rotary force transmitter 2. The machine tool main body 4 includes a pull rod 42 and a main shaft. The rotary force transmitter 2 is connected to the pull rod 42, and the other end of the pull rod 42 is connected to the jaw. The pull rod 42 is used to drive the jaw to open and close. The input end and the output end of the feeding channel are respectively arranged on the drive motor assembly 1 and the pull rod 42, and the feeding channel is located at the connection between the pull rod 42 and the jaw. For the stepless adjustment electric clamping system, on the one hand, the clamping force can range from zero to several thousand Newtons; on the other hand, the drive motor assembly 1 and the rotary force transmitter 2 can be in driving connection or disengaged from the driving connection, the rotary force transmitter 2 and the main shaft of the machine tool main body 4 can be in driving connection or disengaged from the driving connection, and the feeding channel sequentially penetrates through the interiors of the drive motor assembly 1, the rotary force transmitter 2, and the pull rod 42, enabling proper feeding, clamping, and releasing operations with a high degree of coordination, and being also easy to automate, thus improving the working efficiency of the entire stepless adjustment electric clamping system.

[0032] In a preferred embodiment, the pull rod 42 is located in front of the lead screw 21, and the pull rod 42 and the lead screw 21 are coaxially arranged. The feeding channel axially penetrates through the pull rod 42 and the lead screw 21. One end of the lead screw nut 22 close to the pull rod 42 is connected with a pull rod connecting shaft 23. The lead screw nut 22 is sleeved outside the lead screw 21, and the pull rod connecting shaft 23 is sleeved on the pull rod 42.

[0033] In a preferred embodiment, the rotary force transmitter 2 is further provided with a first clutch mechanism 350, a second clutch mechanism 360, and a speed reducer. The output end of the speed reducer is connected to the lead screw 21, and a speed reduction input shaft 121 is arranged at the input end of the speed reducer. The first clutch mechanism 350 and the second clutch mechanism 360 are sleeved outside the speed reduction input shaft 121. The speed reduction input shaft 121 is in driving connection or disengaged from the rotating shaft of the motor 11 of the drive motor assembly 1 through the first clutch mechanism 350. The rotating shaft of the motor 11, the speed reduction input shaft 121, the speed reducer, and the lead screw 21 are coaxially arranged, and the feeding channel is coaxially arranged with and penetrates through the four of them.

[0034] The workpiece can be sequentially conveyed to the jaw through the feeding channel formed by the hollow motor 11, the rotary force transmitter 2, and the pull rod 42, improving the feeding efficiency. The feeding channel is arranged at the axis of the motor 11, the rotary force transmitter 2, and the pull rod 42, avoiding the mechanical transmission of the motor 11, the rotary force transmitter 2, and the pull rod 42 from affecting the conveyance of the workpiece.

[0035] In a preferred embodiment, the portions of the feeding channel located at the rotating shaft of the motor 11, the reduction input shaft 121, the reduction gear, the lead screw 21, and the pull rod 42 are all cylindrical. The rotating shaft of the motor 11, the reduction input shaft 121, the transmission shaft of the reduction gear, the lead screw 21, and the pull rod 42 are sequentially arranged in a hollow shape, and the hollow is cylindrical. The hollow structure is applicable to the machining of a Swiss-type feeding machine. The bar stock / coiled stock is fed from the tail of the machine tool and continuously processed automatically.

[0036] In a preferred embodiment, the portions of the feeding channel located at the rotating shaft of the motor 11, the reduction input shaft 121, the reduction gear, the lead screw 21, and the pull rod 42 are sequentially connected to each other, ensuring the smoothness of the entire feeding process.

[0037] In a preferred embodiment, outside the rotary power transmission device 2, there is also provided a main housing 36 and a protective housing 60 sleeved outside the main housing 36. The lead screw 21 and the lead screw nut 22 are arranged inside the main housing 36. A plurality of positioning mechanisms 61 are also provided on the outer periphery of the protective housing 60. The positioning mechanisms 61 penetrate the protective housing 60 in the radial direction, and the length of the positioning mechanisms 61 extending into the protective housing 60 is adjustable. The positioning mechanisms 61 are located at one end of the protective housing 60 to support the main housing 36.

[0038] The positioning mechanism 61 is used to adjust the positions of the main housing 36 and the protective housing 60 and make the axes of the two match. Generally, the axes of the two are on the same straight line. And through the cooperation of the transition disk 50, it is convenient to install the rotary power transmission device 2 at one end of the machine tool spindle 41. At the same time, when installing the feeding channels of the part located at the pull rod 42 and the part located at the lead screw 21, they can be better aligned, and it is convenient to adjust the coaxiality of the feeding channels where they are located.

[0039] The positioning mechanism 61 includes a positioning bolt and a positioning threaded hole. The positioning bolt and the positioning threaded hole cooperate with each other. The positioning threaded hole penetrates inside the protective housing 60. The positioning threaded hole is arranged along the circumferential direction of the protective housing 60. The positioning bolt penetrates the positioning threaded hole and extends into the protective housing 60, and the positioning bolt supports the rotary power transmission device 2.

[0040] The positioning threaded holes are evenly distributed on the circumference of the protective housing 60. The number can be divided into three or four in each group (circle), and one to three groups can be arranged axially. It is used to ensure that the center of the pull rod 42, the rotating part of the rotary power transmission device 2, and the protective housing 60 can have the same rotation axis during the assembly process. When the rotary power transmission device 2 and the pull rod 42 are installed on the machine tool body 4, the positioning bolts of the positioning mechanism 61 can be loosened and fixed in the direction of the protective housing 60 to ensure the normal rotation of the pull rod 42.

[0041] On the other hand, the present utility model provides a machine tool, which includes a driving motor assembly 1, a machine tool main body 4, a chuck and the above-mentioned rotary force transmitter 2. The machine tool main body 4 includes a pull rod 42 and a main shaft. The rotary force transmitter 2 is connected to the pull rod 42 of the machine tool main body 4. The pull rod 42 is used to drive the jaws of the chuck to open and close. The driving motor assembly 1 and the rotary force transmitter 2 can be in driving connection or disengaged from the driving connection. The rotary force transmitter 2 and the main shaft of the machine tool main body 4 can be in driving connection or disengaged from the driving connection. When it is necessary to clamp or loosen a workpiece, the driving motor assembly 1 and the rotary force transmitter 2 are in driving connection, and the rotary force transmitter 2 and the main shaft of the machine tool main body 4 are disengaged from the driving connection. At this time, the driving motor assembly 1 can drive the pull rod 42 to move back and forth axially through the rotary force transmitter 2, so that the jaws of the chuck open and close. When it is necessary to machine a workpiece, the driving motor assembly 1 and the rotary force transmitter 2 are disengaged from the driving connection, and the rotary force transmitter 2 and the main shaft of the machine tool main body 4 are in driving connection. When the main shaft of the machine tool main body 4 rotates, it drives the jaws of the chuck to rotate. For the more specific structures and working principles of the first clutch mechanism 350 and the second clutch mechanism 360 of the present utility model, the specific structures and working principles of the reduction input shaft 121, the reduction gear 12, the protective housing 60, the positioning mechanism 61, the lead screw 21 and the lead screw nut 22 in the rotary force transmitter 2, the more specific structures and working principles of the machine tool main body 4 and the transition plate 50, and the more specific structures and working principles of the electric clamping system, reference can be made to Chinese patent documents CN117620240A or CN118060573A.

[0042] In this application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0043] In the description of this specification, the description with reference to terms such as "preferred embodiment", "another embodiment", "other embodiments" or "specific examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0044] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A rotary force transmitter, characterized in that, The rotary force transmitter is provided with a lead screw, a lead screw nut and a feeding channel. The feeding channel is arranged inside the rotary force transmitter. The input end and the output end of the feeding channel respectively penetrate through the front and rear ends of the rotary force transmitter. The feeding channel is used to convey a workpiece to the clamping jaw. The lead screw nut is matched with the lead screw. When the lead screw rotates, the lead screw nut can move back and forth. The back-and-forth movement of the lead screw nut is used to drive the clamping jaw to clamp or loosen, so that the clamping jaw clamps or releases the workpiece.

2. The rotary force transmitter according to claim 1, characterized in that, The feeding channel penetrates through the lead screw, and the feeding channel is arranged coaxially with the lead screw.

3. The rotary force transmitter according to claim 1, characterized in that, The rotary force transmitter is further provided with a first clutch mechanism and a second clutch mechanism. Both the first clutch mechanism and the second clutch mechanism have a combined state and a separated state, and the combined state and the separated state of the two are independent of each other. The first clutch mechanism is used to drive the lead screw to rotate. When the first clutch mechanism is in the combined state, it is in transmission connection with the lead screw. When the first clutch mechanism is in the separated state, it is disengaged from the transmission connection with the lead screw. The combined state and the separated state of the second clutch mechanism are used to lock the clamping state of the clamping jaw or make the clamping jaw open and close freely.

4. The rotary force transmitter according to claim 1, characterized in that, The rotary force transmitter is further provided with a first clutch mechanism and a speed reducer. The output end of the speed reducer is connected to the lead screw. The input end of the speed reducer is provided with a speed reduction input shaft. The first clutch mechanism is sleeved outside the speed reduction input shaft. The speed reduction input shaft is in transmission connection or disengaged from the drive motor assembly through the first clutch mechanism. The speed reduction input shaft, the speed reducer and the lead screw are arranged coaxially, and the feeding channel is arranged coaxially with the three and penetrates through the three.

5. A stepless adjustable electric clamping system, characterized in that, The stepless adjustment electric clamping system includes a drive motor assembly, a machine tool main body, a clamping jaw and the rotary force transmitter as described in claim 1. The machine tool main body includes a pull rod and a main shaft. The rotary force transmitter is connected to the pull rod. The other end of the pull rod is connected to the clamping jaw. The pull rod is used to drive the clamping jaw to open and close. The drive motor assembly and the rotary force transmitter can be in transmission connection or disengaged from each other. The rotary force transmitter and the main shaft of the machine tool main body can be in transmission connection or disengaged from each other. The feeding channel sequentially penetrates through the interiors of the drive motor assembly, the rotary force transmitter and the pull rod. The input end and the output end of the feeding channel are respectively arranged on the drive motor assembly and the pull rod, and the feeding channel is located at the connection between the pull rod and the clamping jaw.

6. The stepless adjustable electric clamping system according to claim 5, characterized in that, The pull rod is located in front of the lead screw. The pull rod is arranged coaxially with the lead screw. The feeding channel axially penetrates through the pull rod and the lead screw. One end of the lead screw nut close to the pull rod is connected with a pull rod connecting shaft. The lead screw nut is sleeved outside the lead screw. The pull rod connecting shaft is sleeved on the pull rod.

7. The stepless adjustment electric clamping system according to claim 6, wherein, The rotary force transmitter is further provided with a first clutch mechanism, a second clutch mechanism and a speed reducer. The output end of the speed reducer is connected to the lead screw. The input end of the speed reducer is provided with a speed reduction input shaft. The first clutch mechanism and the second clutch mechanism are sleeved outside the speed reduction input shaft. The speed reduction input shaft is in transmission connection or disengaged from the motor rotating shaft of the drive motor assembly through the first clutch mechanism. The motor rotating shaft, the speed reduction input shaft, the speed reducer and the lead screw are coaxially arranged, and the feeding channel is coaxially arranged with and penetrates through the four of them.

8. The stepless adjustable electric clamping system according to claim 7, wherein, The parts of the feeding channel located at the motor rotating shaft, the speed reduction input shaft, the speed reducer, the lead screw and the pull rod are all cylindrical.

9. The stepless adjustable electric clamping system according to claim 8, wherein, The parts of the feeding channel located at the motor rotating shaft, the speed reduction input shaft, the speed reducer, the lead screw and the pull rod are sequentially connected to each other.

10. The stepless adjustment electric clamping system according to claim 5, characterized in that, A main housing is further arranged outside the rotary force transmitter, and a protective housing is sleeved outside the main housing. The lead screw and the lead screw nut are arranged in the main housing. A plurality of positioning mechanisms are further arranged on the outer periphery of the protective housing. The positioning mechanisms penetrate through the protective housing in the radial direction and the length of the positioning mechanisms extending into the protective housing can be adjusted. One end of the protective housing where the positioning mechanisms are located supports the main housing.

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