Tailstock jacking force and pulling force control mechanism of aviation blade machining equipment

Abstract

The invention relates to a tailstock jacking force and pulling force control mechanism of aviation blade machining equipment, and belongs to the technical field of machine tool machining equipment.The structure of the control mechanism comprises a vehicle body, a tailstock device is arranged on one side of the vehicle body in a sliding mode, and the tailstock device comprises a shell; the center assembly, the moving assembly and the driving unit are sequentially arranged in the shell from top to bottom; an opening is formed in one side of the upper part of the shell; the moving assembly comprises a lead screw, a connecting base and a main gear. A base of the lead screw is fixedly arranged in the shell; a rotating structure is arranged at one end of the lead screw, and the main gear sleeves the rotating structure; the driving unit drives the lead screw to rotate through the main gear; the connecting seat is arranged on a moving nut of the lead screw; the center assembly is arranged on the connecting base and located at an opening in the upper portion of the shell, and the lead screw drives the center assembly to slide. The device has the technical effects that the jacking force is accurate and controllable, and the machining process is stable and reliable.

Description

Technical Field

[0001] This application relates to the technical field of machine tool processing equipment, and in particular to a tailstock clamping force and tension control mechanism for an aircraft blade processing equipment. Background Technology

[0002] In the manufacturing of core components for aero-engines, the machining accuracy of aero-blades is directly related to the engine's power output efficiency and operational safety. The tailstock clamping force and tension control mechanism, as a key component of blade machining equipment, determines the stability of blade clamping and the machining quality. This mechanism applies controllable clamping and tension forces to the blades, balancing the cutting forces during machining and preventing vibration, displacement, or deformation. It is a core guarantee for achieving high-precision machining of blades made of difficult-to-machine materials such as titanium alloys and high-temperature alloys.

[0003] The tailstock clamping force and tension control mechanisms of existing aero-blade processing equipment mostly adopt a structure of drive motor and lead screw transmission. The clamping action is achieved through manual adjustment or simple mechanical limit. These mechanisms generally have the problem of low clamping force control accuracy, which makes it difficult to adapt to the processing requirements of complex curved surfaces and thin-walled structures of blades.

[0004] Patent (CN 110064766 A) discloses a lathe tailstock assist sliding device, comprising: a rotating shaft inside a brake housing, a handle vertically upward on the rotating shaft, and the end of the handle away from the rotating shaft penetrating the top surface of the brake housing; a strip-shaped opening inside the top surface of the brake housing, and the handle moving longitudinally along the strip-shaped opening with the rotating shaft as the center; micro-motion sensors, positioning rods, and limit blocks are respectively provided on both sides of the handle, the two micro-motion sensors are located in the same horizontal plane and are equidistant from each other on both sides of the handle, the two positioning rods are located in the same horizontal plane and are equidistant from each other on both sides of the handle, and the two limit blocks are located in the same horizontal plane and are equidistant from each other on both sides of the handle; the above patent can achieve precise positioning, displacement monitoring, and limit position protection of the tailstock sliding stroke; however, this device is limited to basic stroke control of the linear sliding process of the lathe tailstock, and cannot achieve precise adaptation and closed-loop management for real-time detection, dynamic adjustment, and linkage control with the machining process in high-precision scenarios such as aerospace blade machining.

[0005] Regarding the aforementioned technologies, the inventors believe that there are defects such as insufficient precision in controlling the clamping force, leading to blade deformation or processing chatter. Summary of the Invention

[0006] To solve the above-mentioned technical problems, this application provides a tailstock clamping force and tension control mechanism for an aircraft blade processing equipment.

[0007] This application provides a tailstock clamping force and tension control mechanism for an aircraft blade processing equipment, which adopts the following technical solution: A tailstock clamping force and tension control mechanism for an aircraft blade processing equipment includes a vehicle body. A tailstock device is slidably mounted on one side of the vehicle body. The tailstock device includes a housing, and a centering assembly, a moving assembly, and a drive unit are sequentially arranged within the housing from top to bottom. An opening is provided on one side of the upper part of the housing. The moving assembly includes a lead screw, a connecting seat, and a main gear. The base of the lead screw is fixedly mounted within the housing. A rotating structure is provided at one end of the lead screw, and the main gear is sleeved on the rotating structure. The drive unit drives the lead screw to rotate via the main gear. The connecting seat is mounted on the moving nut of the lead screw. The centering assembly is mounted on the connecting seat and is located at the opening in the upper part of the housing. The lead screw drives the centering assembly to slide.

[0008] By adopting the above technical solution, the clamping force is monitored in real time through the connecting seat in the moving component, avoiding excessive tightness that could cause blade deformation, or excessive looseness that could cause positioning deviation. The screw drive, combined with the precise control of the drive unit, makes the displacement accuracy of the tip assembly higher, ensuring the coaxiality and repeatability of the blade clamping. The drive unit drives the screw to rotate through the main gear, resulting in a simple transmission path and rapid response, allowing for quick switching from pre-tightening to clamping. The tailstock device slides first to pre-tighten the workpiece, and then the moving component drives the tip assembly for precise clamping, achieving initial workpiece positioning before applying the set clamping force, reducing loosening caused by vibration or cutting force fluctuations during processing. The tip assembly, moving component, and drive unit are integrated into the housing from top to bottom, with a compact layout and stable center of gravity, reducing vibration interference from the mechanism itself during processing and indirectly improving the surface quality of the blade. The tailstock device can slide along the vehicle body, and combined with the linear adjustment of the tip assembly driven by the screw, it can adapt to the processing of aerospace blades of different lengths and specifications.

[0009] Preferably, the connecting base includes a nut plate, a nut seat, a connecting plate, and a force sensor; the nut plate has guide slots on both sides; the nut plate has a connecting slot located between two sets of guide slots; a mating block slides within the guide slot, and the bottoms of the two sets of mating blocks are respectively located on both sides of the nut seat; the nut seat has a mounting groove in the middle of its top, and one end of the force sensor is fixedly mounted at one end of the mounting groove; one end of the connecting plate slides within the connecting slot, and the other end of the connecting plate is fixedly mounted at the other end of the force sensor.

[0010] By adopting the above technical solution, the force sensor, as the core detection element, is fixed in the mounting groove of the nut seat. The clamping force transmitted by the top component is transmitted through the nut plate to the connecting plate and acts on the force sensor. It can capture the dynamic changes of the clamping force in real time, avoiding the error of traditional manual adjustment of clamping force. At the same time, based on the signal fed back by the sensor, it can be compared with the preset clamping force parameter. The drive unit can finely adjust the rotation of the lead screw to form a closed loop control. This can prevent the clamping force from being too large and causing irreversible deformation of high-precision parts such as aerospace blades, and can also prevent the clamping force from being too small and causing displacement and chatter during processing, thus ensuring the shape and position accuracy and surface processing quality of the blade. The guide slots on both sides of the nut plate slide with the mating blocks of the nut seat, which can provide stable guidance for the transmission of clamping force and avoid deviation and shaking during the force transmission process. Moreover, the sliding fit between the connecting slot and the connecting plate can adapt to the small displacement compensation during the clamping process, ensuring that the force sensor can always accurately receive the force signal and is not affected by slight deviations during the transmission process.

[0011] Preferably, the tip assembly includes a tip rod, a mounting sleeve, a rotating seat, and a stress-relieving spring. The tail end of the tip rod is slidably disposed within the mounting sleeve, and the tip end of the tip rod is disposed outside the housing through an opening. The rod body of the tip rod is polygonal. The mounting sleeve contains a polygonal shape that mates with the rod body of the tip rod. A stop block is provided within the mounting sleeve to abut against the tip rod. One end of the stress-relieving spring is fixedly connected to the tail end within the mounting sleeve, and the other end of the stress-relieving spring is fixedly connected to the tail end of the tip rod. The rotating seat is sleeved on the mounting sleeve, and the mounting sleeve rotates on the rotating seat. The bottom of the rotating seat is fixedly disposed on the nut plate, and the top of the rotating seat is slidably disposed on the top of the housing. An actuation structure is provided within the mounting sleeve.

[0012] By adopting the above technical solution, the force-relieving spring achieves pre-tightening buffering. When the tailstock initially slides, the tip rod retracts to compress the spring, absorbing the instantaneous impact force through elastic deformation. This prevents the sudden increase in clamping force from directly damaging the blade surface or causing deformation. It is especially suitable for high-precision, easily damaged parts such as aerospace blades. During the pre-tightening stage, the spring buffer completes the initial positioning of the workpiece. During the secondary clamping stage, the starting structure at the main stop allows the drive unit to accurately apply the set clamping force through the force sensor, making the force transmission more balanced and reducing the stress concentration problem caused by one-time clamping. The tip rod and the mounting sleeve adopt a polygonal mating structure to completely eliminate relative rotation, ensuring that the clamping force is transmitted without deviation, while ensuring the rotational coaxiality during blade processing and avoiding dimensional and positional errors caused by rod rotation. The mounting sleeve can rotate freely on the rotating seat, adapting to the rotational motion requirements during blade processing and reducing friction and wear between the tip and the workpiece.

[0013] Preferably, the drive unit includes a drive motor, an auxiliary gear, and a pressure push rod. The drive motor is slidably disposed at the bottom of the housing. The auxiliary gear is disposed at the working end of the drive motor and is used to mesh with the main gear for transmission. The drive motor provides power to rotate the main gear through the auxiliary gear. The pressure push rod is fixedly disposed on the housing, and the working end of the pressure push rod is fixedly disposed on the base of the drive motor. The pressure push rod is used to push the drive motor to slide. An auxiliary plate is rotatably disposed on the end face of the working end of the drive motor.

[0014] By adopting the above technical solution, the drive motor drives the lead screw to rotate through the meshing transmission of the auxiliary gear and the main gear. The gear meshing transmission itself has the advantages of constant transmission ratio and high torque transmission efficiency, which can avoid the slippage problem of belt drive and other methods, and ensure the stable output of speed and force during clamping. It will not cause the clamping force to fluctuate due to power transmission deviation, and provide reliable power support for stable clamping during aerospace blade processing. After the center rod abuts against the starting structure to confirm the pre-tightening, the pressure push rod pushes the drive motor to slide, so that the auxiliary gear and the main gear mesh precisely. This avoids the drive motor running in advance and causing the clamping force to run out of control. It ensures that the secondary clamping action is started only after the workpiece is positioned, so that the clamping force applied by the lead screw and the center assembly is precisely applied to the workpiece, which meets the stringent requirements of clamping accuracy in aerospace blade processing.

[0015] Preferably, the starting structure includes a starting cavity, a trigger block, a trigger groove, and a pressure hose; the trigger groove is disposed on the stop block, and one end of the trigger block is slidably disposed in the trigger groove; the starting cavity is disposed inside the mounting sleeve, and one end of the starting cavity is connected to the trigger groove; one end of the pressure hose is rotatably disposed in the middle of the mounting sleeve, and the other end of the pressure hose is connected to the drive unit; the other end of the starting cavity is connected to the pressure hose.

[0016] By adopting the above technical solution, the trigger block and the trigger groove on the stop block slide together. Only when the top rod is pre-tightened and abuts against the stop block will the trigger block be pushed into the trigger groove, thereby squeezing the medium in the starting cavity. This ensures that the secondary clamping action is only started after the workpiece is positioned. The pressure hose transmits the pressure signal of the starting cavity to the drive unit, realizing the full-process automatic linkage of signal triggering after pre-tightening and precise clamping through gear meshing, which improves clamping efficiency. One end of the pressure hose is rotatably set in the middle of the mounting sleeve, which can rotate synchronously with the mounting sleeve, avoiding signal interruption or structural damage caused by hose entanglement or pulling during the rotation of the top component.

[0017] Preferably, the rotating structure includes a drive groove and a drive tooth; the drive groove is disposed on the inner ring of the main gear, the bottom of the drive tooth is fixedly disposed on one end of the lead screw, and the top of the drive tooth is disposed in the drive groove; a sliding groove is disposed on the circumference of the lead screw on one side of the drive tooth, a slider is slidably disposed on the sliding groove, and the top of the slider is fixedly disposed on the inner ring of the main gear.

[0018] By adopting the above technical solution, problems such as tooth surface collision and tooth chipping are prone to occur when the auxiliary gear and the main gear initially make contact. However, the rotation interval of this structure allows the main gear to rotate independently for a period of time first. During this process, the relative position of the tooth surface can be adjusted through the autonomous rotation of the main gear, avoiding rigid engagement between the auxiliary gear and the main gear. This significantly reduces the collision force and frictional resistance at the moment of meshing, reduces tooth surface wear and tooth breakage, and solves the problem of easy gear damage in traditional rigid meshing, extending the overall service life of the drive unit and rotating structure. The cooperation between the slider and the sliding groove not only provides stable guidance for the independent rotation of the main gear and prevents the main gear from deviating, but also allows the main gear to always rotate around the screw axis. After the main gear and the auxiliary gear are fully meshed and the tooth surfaces are fully engaged, the drive groove abuts against the drive teeth to transmit power, ensuring that the gear is in the best meshing state during power transmission, avoiding transmission jamming and power loss caused by meshing misalignment, ensuring the smoothness of the screw rotation, and laying the foundation for the top component to smoothly clamp the workpiece.

[0019] Preferably, the housing is provided with a retaining assembly located at the main gear and the auxiliary gear. The retaining assembly includes a base plate, a first baffle, a second baffle, a push rod, a pushing mechanism, and an auxiliary mechanism. The base plate is slidably disposed on the housing, the first baffle is fixedly disposed on one side of the base plate, and the second baffle is slidably disposed on the other side of the base plate. The push rod is slidably disposed on the housing, and one end of the push rod is disposed on the auxiliary plate. The push rod is provided with a groove. The pushing mechanism is used to push the base plate to slide longitudinally. The auxiliary mechanism is used to push the second baffle to slide laterally.

[0020] By adopting the above technical solution, the first baffle and the second baffle are located on both sides of the main gear. When the pushing mechanism drives the base plate to slide longitudinally, it can drive the baffle to adjust its position synchronously, providing precise guidance for the meshing of the main gear and the auxiliary gear, avoiding the tooth surface jamming and stuck phenomena commonly seen in traditional meshing. The second baffle, which slides laterally, works in conjunction with the fixed first baffle to ensure that the axis of the main gear and the auxiliary gear remain parallel, reducing the risk of meshing misalignment from the root and improving the meshing success rate. After meshing is completed, the auxiliary mechanism pushes the second baffle to clamp laterally, forming a bidirectional limit with the first baffle, ensuring the position of the main gear and the auxiliary gear, and preventing gear disengagement or increased meshing clearance due to vibration during processing.

[0021] Preferably, the pushing mechanism includes a slide rod, a roller, and a top force spring; the top force spring is sleeved on the slide rod, one end of the top force spring is fixedly mounted on the housing, and the other end of the top force spring is fixedly mounted on the slide rod; the roller is rotatably mounted on one end of the slide rod, and the roller is kept in contact with the top rod by the top force spring; the other end of the slide rod is fixedly mounted on the bottom of the base plate.

[0022] By adopting the above technical solution, the top spring always provides a continuous and uniform elastic thrust to the slide rod, so that the roller tightly abuts against the top rod. When the top rod slides with the drive motor, the slide rod can follow the top rod synchronously through the rolling of the roller, thereby driving the base plate to slide longitudinally and realize the adaptive position adjustment of the first baffle and the second baffle. The elastic driving force avoids the position deviation caused by rigid push and can compensate for the small displacement during the gear meshing process in real time, ensuring that the baffle always provides precise guidance to the main gear and ensures that the axis of the main gear and the auxiliary gear are parallel, thereby reducing meshing misalignment, tooth knocking and other problems from the root.

[0023] Preferably, the auxiliary mechanism includes a drive cylinder, a connecting pipe, an auxiliary cylinder, and an auxiliary rod; the drive cylinder is fixedly mounted on the housing, and the other end of the push rod is slidably mounted inside the drive cylinder; the auxiliary cylinder is mounted on the housing on one side of the second baffle; one end of the connecting pipe is connected to the drive cylinder, and the other end of the connecting pipe is connected to the auxiliary cylinder.

[0024] By adopting the above technical solution, the push rod slides directly to drive the medium in the drive cylinder. The pressure signal is transmitted to the auxiliary cylinder in real time through the connecting pipe, which pushes the auxiliary rod to drive the second baffle to move laterally. The clamping action of the second baffle is precisely matched with the gear meshing process. After the gear is fully meshed, the baffle immediately completes the lateral clamping, so that the main gear and the auxiliary gear are in the optimal meshing position, avoiding gear displacement and disengagement caused by processing vibration, and ensuring the stability of power transmission.

[0025] Preferably, a force value display is provided on the housing, and the force value display is connected to the force sensor.

[0026] By adopting the above technical solution, the force display is directly connected to the force sensor, which can display the actual clamping force value of the top component on the aircraft blade in real time. Operators do not need to rely on experience or additional detection tools to judge the clamping status and can intuitively grasp the clamping force.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. The force sensor, as the core detection element, is fixed in the mounting slot of the nut seat. The clamping force transmitted by the top component is transmitted through the nut plate to the connecting plate and acts on the force sensor. It can capture the dynamic changes of the clamping force in real time, avoiding the errors of traditional manual adjustment of clamping force. At the same time, based on the signal fed back by the sensor, it can be compared with the preset clamping force parameter. The drive unit can finely adjust the rotation of the lead screw to form a closed loop control. This can prevent the clamping force from being too large and causing irreversible deformation of high-precision parts such as aerospace blades, and also prevent the clamping force from being too small and causing displacement and chatter during processing, thus ensuring the shape and position accuracy and surface processing quality of the blade. The guide slots on both sides of the nut plate slide with the mating blocks of the nut seat, which can provide stable guidance for the transmission of clamping force and avoid deviation and shaking during the force transmission process. Moreover, the sliding fit between the connecting slot and the connecting plate can adapt to the small displacement compensation during the clamping process, ensuring that the force sensor can always accurately receive the force signal and is not affected by slight deviations during the transmission process.

[0028] 2. A force spring provides pre-tension buffering. When the tailstock initially slides, the tip rod retracts to compress the spring, absorbing the instantaneous impact force through elastic deformation. This prevents a sudden increase in clamping force from directly damaging the blade surface or causing deformation. It is especially suitable for high-precision, easily damaged parts such as aerospace blades. During the pre-tensioning stage, the spring buffer completes the initial positioning of the workpiece. During the secondary clamping stage, the starting structure at the main stop allows the drive unit to accurately apply the set clamping force through the force sensor, making the force transmission more balanced and reducing the stress concentration problem caused by one-time clamping. The tip rod and the mounting sleeve adopt a polygonal mating structure to completely eliminate relative rotation, ensuring that the clamping force is transmitted without deviation. At the same time, it ensures the rotational coaxiality during blade processing and avoids the form and position errors caused by the rotation of the rod. The mounting sleeve can rotate freely on the rotating seat, adapting to the rotational motion requirements during blade processing and reducing friction and wear between the tip and the workpiece. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure in the embodiment.

[0030] Figure 2 This is a cross-sectional schematic diagram of the internal structure of the housing in the embodiment.

[0031] Figure 3 yes Figure 2 A magnified view of part A in the middle.

[0032] Figure 4 yes Figure 2 A magnified view of part B in the middle.

[0033] Figure 5 This is a schematic diagram of the connector in the embodiment.

[0034] Figure 6 This is a cross-sectional schematic diagram of the internal structure of the connector in the embodiment.

[0035] Figure 7 This is a cross-sectional schematic diagram of the rotating structure in the embodiment.

[0036] Explanation of reference numerals in the attached drawings: 1. Body; 2. Tail rack assembly; 21. Housing; 211. Opening; 212. Force indicator; 3. Center assembly; 31. Center rod; 32. Mounting sleeve; 321. Stop; 33. Rotating seat; 34. Decompression spring; 35. Starting structure; 351. Starting cavity; 352. Trigger block; 353. Trigger groove; 354. Pressure hose; 4. Moving assembly; 41. Lead screw; 42. Connecting seat; 421. Nut plate; 4211. Guide slot; 4212. Connecting slot; 4213. Mating block; 422. Nut seat; 4221. Mounting groove; 423. Connecting plate ; 424, Force sensor; 43, Main gear; 44, Rotating structure; 441, Drive groove; 442, Drive gear; 443, Sliding groove; 444, Slider; 5, Drive unit; 51, Drive motor; 52, Auxiliary gear; 53, Pressure push rod; 54, Auxiliary plate; 6, Holding assembly; 61, Base plate; 62, First baffle; 63, Second baffle; 64, Push rod; 641, Groove; 65, Pushing mechanism; 651, Slide rod; 652, Roller; 653, Top force spring; 66, Auxiliary mechanism; 661, Drive cylinder; 662, Connecting pipe; 663, Auxiliary cylinder; 664, Auxiliary rod. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0038] This application discloses a tailstock clamping force and tension control mechanism for an aircraft blade processing equipment. (Refer to...) Figure 1 , Figure 2 and Figure 7The system includes a vehicle body 1, with a tail rack device 2 slidably mounted on one side of the vehicle body 1. The tail rack device 2 includes a housing 21, and from top to bottom, a top assembly 3, a moving assembly 4, and a drive unit 5 are sequentially arranged within the housing 21. An opening 211 is provided on one side of the upper part of the housing 21. The moving assembly 4 includes a lead screw 41, a connecting seat 42, and a main gear 43. The base of the lead screw 41 is fixedly mounted inside the housing 21. A rotating structure 44 is provided at one end of the lead screw 41, and the main gear 43 is sleeved on the rotating structure 44. The rotating structure 44 includes a drive groove 441 and a drive tooth 442. The drive groove 441 is located on the inner ring of the main gear 43, and the bottom of the drive tooth 442 is fixedly mounted on one end of the lead screw 41. The top is set in the drive groove 441; a sliding groove 443 is provided on the circumference of the lead screw 41 on one side of the drive tooth 442, and a slider 444 is slidably set on the sliding groove 443. The top of the slider 444 is fixedly set on the inner ring of the main gear 43. When the main gear 43 rotates, it first rotates around the lead screw 41, and after rotating to the side of the drive groove 441 and abutting against the drive tooth 442, the lead screw rotates; the drive unit 5 drives the lead screw 41 to rotate through the main gear 43; the connecting seat 42 is set on the movable nut of the lead screw 41; the tip assembly 3 is set on the connecting seat 42, and the tip assembly 3 is located at the opening 211 at the upper part of the housing 21. The lead screw 41 drives the tip assembly 3 to slide; a force value display 212 is set on the housing 21.

[0039] Reference Figure 2 , Figure 5 and Figure 6 The connecting seat 42 includes a nut plate 421, a nut seat 422, a connecting plate 423, and a force sensor 424. Guide slots 4211 are provided on both sides of the nut plate 421. A connecting slot 4212 is provided on the nut plate 421, located between two sets of guide slots 4211. A mating block 4213 slides within the guide slot 4211, with the bottoms of the two sets of mating blocks 4213 respectively located on both sides of the nut seat 422. A mounting groove 4221 is provided in the middle of the top of the nut seat 422, and one end of the force sensor 424 is fixedly mounted at one end of the mounting groove 4221. One end of the connecting plate 423 slides within the connecting slot 4212, and the other end of the connecting plate 423 is fixedly mounted at the other end of the force sensor 424. A force value display 212 is connected to the force sensor 424. The lead screw 41 slides the tip assembly 3 through the connecting seat 42, and the force sensor 424 precisely controls the force used to clamp the workpiece.

[0040] Reference Figure 1 , Figure 2 and Figure 3The tip assembly 3 includes a tip rod 31, a mounting sleeve 32, a rotating seat 33, and a stress-relieving spring 34. The tail end of the tip rod 31 is slidably disposed within the mounting sleeve 32, and the tip end of the tip rod 31 is disposed outside the housing 21 through an opening 211. The rod body of the tip rod 31 is polygonal. The interior of the mounting sleeve 32 is a polygonal shape that mates with the rod body of the tip rod 31. A stop block 321 is provided inside the mounting sleeve 32 to abut against the tip rod 31. One end of the stress-relieving spring 34 is fixedly connected to the tail end inside the mounting sleeve 32. The other end is fixedly connected to the tail end of the center rod 31; the rotating seat 33 is sleeved on the mounting sleeve 32, and the mounting sleeve 32 rotates on the rotating seat 33; the bottom of the rotating seat 33 is fixedly set on the nut plate 421, and the top of the rotating seat 33 is slidably set on the top of the housing 21, which not only ensures the free rotation of the mounting sleeve 32, but also provides a stable guide for the feed of the center assembly 3; the tailstock device 2 slides to drive the center rod 31 to slide towards the workpiece, so that the center rod 31 pre-tightens the workpiece, and the workpiece and the center rod 31 are softly connected by the stress relief spring 34 to avoid excessive force.

[0041] An actuation structure 35 is provided inside the mounting sleeve 32. The actuation structure 35 includes an actuation cavity 351, a trigger block 352, a trigger groove 353, and a pressure hose 354. The trigger groove 353 is disposed on the stop block 321, and one end of the trigger block 352 is slidably disposed in the trigger groove 353. The actuation cavity 351 is disposed inside the mounting sleeve 32, and one end of the actuation cavity 351 is connected to the trigger groove 353. One end of the pressure hose 354 is rotatably disposed in the middle of the mounting sleeve 32, and the other end of the pressure hose 354 is connected to the drive unit 5. The other end of the actuation cavity 351 is connected to the pressure. When the tailstock device 2 slides, the tip rod 31 slides into the mounting sleeve 32 and abuts against the trigger block 352 to the limit position. At this time, the tip rod 31 and the stop block 321 maintain rigid contact, and the pressure generated by the trigger block 352 sliding into the trigger groove 353 is transmitted to the drive unit 5 through the pressure hose 354.

[0042] Reference Figure 2 , Figure 4 and Figure 7The drive unit 5 includes a drive motor 51, an auxiliary gear 52, and a pressure push rod 53. The drive motor 51 is slidably mounted on the bottom of the housing 21. The auxiliary gear 52 is located at the working end of the drive motor 51 and is used to mesh with the main gear 43 for transmission. The drive motor 51 provides power to rotate the main gear 43 through the auxiliary gear 52. The pressure push rod 53 is fixedly mounted on the housing 21, and the working end of the pressure push rod 53 is fixedly mounted on the base of the drive motor 51. The trigger block 352 slides into the trigger groove 353. The generated pressure is transmitted to the cylinder of the pressure push rod 53 through the pressure hose 354; the pressure push rod 53 is used to push the drive motor 51 to slide, the auxiliary gear 52 and the main gear 43 mesh, and the drive screw 41 rotates. Through the rotating structure 44, when the auxiliary gear 52 is not fully engaged, the main gear 43 rotates first. When fully engaged, the drive groove 441 of the rotating structure 44 abuts against the drive tooth 442, and then drives the lead screw 41 to rotate. An auxiliary plate 54 is rotatably provided on the end face of the working end of the drive motor 51.

[0043] Reference Figure 2 and Figure 4 A retaining assembly 6 is provided on the housing 21. The retaining assembly 6 is located at the main gear 43 and the auxiliary gear 52. The retaining assembly 6 includes a base plate 61, a first baffle 62, a second baffle 63, a push rod 64, a pushing mechanism 65, and an auxiliary mechanism 66. The base plate 61 is slidably disposed on the housing 21. The first baffle 62 is fixedly disposed on one side of the base plate 61, and the second baffle 63 is slidably disposed on the other side of the base plate 61. The push rod 64 is slidably disposed on the housing 21. One end of the push rod 64 is disposed on the auxiliary plate 54. The auxiliary plate 54 rotates freely at the working end of the drive motor 51 to avoid direct contact affecting the rotation of the drive motor 51. The push rod 64 is provided with a groove 641. When the drive motor 51 slides, it pushes the push rod 64, and the push rod 64 drives the pushing mechanism 65. The pushing mechanism 65 is used to push the base plate 61 to slide longitudinally. At the same time, the push rod 64 also drives the auxiliary mechanism 66, which is used to push the second baffle 63 to slide laterally.

[0044] The pushing mechanism 65 includes a slide rod 651, a roller 652, and a top spring 653. The top spring 653 is sleeved on the slide rod 651, with one end of the top spring 653 fixedly mounted on the housing 21 and the other end fixedly mounted on the slide rod 651. The roller 652 is rotatably mounted on one end of the slide rod 651, and the roller 652 is kept in contact with the top rod 64 by the top spring 653. The other end of the slide rod 651 is fixedly mounted on the bottom of the base plate 61. The top rod 64 slides towards the auxiliary mechanism 66, and the slide rod 651 rolls into the groove 641 of the top rod 64 by the force of the top spring 653, causing the base plate 61 to slide downward. At this time, the first baffle 62 will block one side of the main gear 43 and the auxiliary gear 52. The auxiliary mechanism 66 includes a drive cylinder 661, a connecting pipe 662, an auxiliary cylinder 663, and an auxiliary rod 664. The drive cylinder 661 is fixedly mounted on the housing 21, and the other end of the push rod 64 is slidably mounted inside the drive cylinder 661. The auxiliary cylinder 663 is mounted on the housing 21 on one side of the second baffle 63. One end of the connecting pipe 662 is connected to the drive cylinder 661, and the other end of the connecting pipe 662 is connected to the auxiliary cylinder 663. The push rod 64 slides into the auxiliary cylinder 663 of the auxiliary mechanism 66, so that the pressure in the drive cylinder 661 is transmitted through the connecting pipe 662 to the auxiliary cylinder 663 to drive the auxiliary rod 664 to slide, so that the second baffle 63 blocks the other side of the main gear 43 and the auxiliary gear 52.

[0045] The working principle of the tailstock clamping force and tension control mechanism of the aircraft blade processing equipment in this application is as follows: The tailstock device 2 slides along one side of the vehicle body 1, driving the center assembly 3 to move closer to the workpiece to be processed until the tip of the center rod 31 contacts the end face of the workpiece. In the center assembly 3, the tail of the center rod 31 is slidably disposed in the mounting sleeve 32, and both the mounting sleeve 32 and the rod body of the center rod 31 are polygonal structures to ensure that they rotate synchronously and have no relative circumferential displacement. The tailstock device 2 continues to slide, causing the center rod 31 to retract into the mounting sleeve 32. At this time, the center rod 3... 1. A tail compression spring 34 is used to achieve a soft connection between the workpiece and the center rod 31 through elastic deformation, avoiding damage to the workpiece due to excessive initial clamping force. At the same time, the elastic preload ensures the initial positioning stability of the workpiece. When the tailstock device 2 slides to its limit position, the center rod 31 abuts against the stop block 321 inside the mounting sleeve 32, achieving a hard abutment between the center rod 31 and the stop block 321. When the center rod 31 abuts against the stop block 321, it simultaneously pushes the trigger block 352 on the stop block 321 to slide into the trigger groove 353. The trigger block 352 squeezes and activates the cavity 3. The medium inside 51 generates pressure, which is transmitted through pressure hose 354 to the cylinder of pressure push rod 53 in drive unit 5. Pressure push rod 53 is activated, pushing drive motor 51 to slide along the bottom of housing 21, causing auxiliary gear 52 at the working end of drive motor 51 to move towards main gear 43 until auxiliary gear 52 and main gear 43 are fully meshed. During the meshing process of auxiliary gear 52 and main gear 43, since main gear 43 is slidably mounted on sliding groove 443 of lead screw 41 through slider 444, and the drive groove 441 of inner ring of main gear 43 is connected to the end of lead screw 41... With the drive gear 442 in a disengaged state, the main gear 43 first rotates around the lead screw 41. When the auxiliary gear 52 is fully engaged with the main gear 43, the main gear 43 stops rotating. At this time, one side of the drive groove 441 of the inner ring of the main gear 43 abuts against the drive gear 442 of the lead screw 41, forming a torque transmission structure. The drive motor 51 drives the main gear 43 to rotate through the auxiliary gear 52. The main gear 43 drives the lead screw 41 to rotate synchronously through the abutment relationship between the drive groove 441 and the drive gear 442. The rotation of the lead screw 41 is converted into the axial linear motion of its moving nut.The moving nut of the lead screw 41 drives the connecting seat 42 to move axially as a whole. The connecting seat 42 is connected to the rotating seat 33 through the nut plate 421, thereby driving the center assembly 3 to feed synchronously, so as to further tighten the center rod 31 on the workpiece. In the connecting seat 42, the nut seat 422 is slidably engaged with the guide slot 4211 of the nut plate 421 through the mating block 4213. One end of the connecting plate 423 is slidably disposed in the connecting slot 4212 of the nut plate 421, and the other end is connected to the force sensor 424. The force sensor 424 is fixed in the mounting slot 4221 of the nut seat 422. The clamping force generated when the center rod 31 tightens the workpiece. The force is transmitted to the nut plate 421 via the top component 3 and the rotating seat 33, and then to the force sensor 424 via the connecting plate 423. The force sensor 424 converts the force signal into an electrical signal and transmits it to the force value display 212 on the housing 21 to achieve real-time monitoring of the clamping force. At the same time, the signal fed back by the force sensor 424 can be used to adjust the output power of the drive motor 51 to ensure that the clamping force is accurately controlled within the preset range. During the sliding process of the drive motor 51, the auxiliary plate 54 at the working end of the drive motor 51 pushes the push rod 64 to slide along the housing 21. The push rod 64 drives the pushing mechanism 65 on the one hand; when the push rod 64 slides, the sliding rod 6... Roller 652 on 51 is always in contact with push rod 64 under the action of push spring 653. When roller 652 rolls into groove 641 of push rod 64, slide rod 651 drives base plate 61 to slide downward. First baffle 62 on one side of base plate 61 blocks one side of main gear 43 and auxiliary gear 52. On the other hand, the other end of push rod 64 slides into drive cylinder 661. Pressure in drive cylinder 661 is transmitted to auxiliary cylinder 663 through connecting pipe 662. Drive auxiliary rod 664 pushes second baffle 63 to slide laterally, blocking the other side of main gear 43 and auxiliary gear 52. The second baffle 63 works in concert to ensure the stability of the gear meshing state and prevent gear disengagement during transmission. After the workpiece is processed, the drive motor 51 stops, the pressure push rod 53 depressurizes and resets, driving the drive motor 51 back, and the auxiliary gear 52 separates from the main gear 43. Simultaneously, the push rod 64 loses its driving force and resets under the action of the push spring 653, pushing the mechanism 65 and auxiliary mechanism 66 to reset the base plate 61, the first baffle 62, and the second baffle 63. The deceleration spring 34 releases its elastic potential energy, pushing the top rod 31 to reset, and the tailstock device 2 slides along the vehicle body 1 away from the workpiece, completing the entire work cycle.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tailstock clamping force and tension control mechanism for an aircraft blade processing equipment, characterized in that: The system includes a vehicle body (1), on one side of which a tail rack device (2) is slidably mounted. The tail rack device (2) includes a housing (21), and from top to bottom, a top assembly (3), a moving assembly (4), and a drive unit (5) are sequentially arranged within the housing (21). An opening (211) is provided on one side of the upper part of the housing (21). The moving assembly (4) includes a lead screw (41), a connecting seat (42), and a main gear (43). The base of the lead screw (41) is fixedly mounted within the housing (21). A rotating structure (44) is provided at one end of the lever (41), and the main gear (43) is sleeved on the rotating structure (44); the driving unit (5) drives the lead screw (41) to rotate through the main gear (43); the connecting seat (42) is provided on the movable nut of the lead screw (41); the tip assembly (3) is provided on the connecting seat (42), and the tip assembly (3) is located at the opening (211) at the upper part of the housing (21), and the lead screw (41) drives the tip assembly (3) to slide.

2. The tailstock clamping force and tension control mechanism for an aircraft blade processing equipment according to claim 1, characterized in that: The connecting base (42) includes a nut plate (421), a nut seat (422), a connecting plate (423), and a force sensor (424); the nut plate (421) has guide slots (4211) on both sides; the nut plate (421) has a connecting slot (4212) located between two sets of guide slots (4211); a mating block (4213) slides in the guide slot (4211), and the bottoms of the two sets of mating blocks (4213) are respectively located on both sides of the nut seat (422); the nut seat (422) has an installation groove (4221) in the middle of the top, and one end of the force sensor (424) is fixedly installed at one end of the installation groove (4221); one end of the connecting plate (423) slides in the connecting slot (4212), and the other end of the connecting plate (423) is fixedly installed at the other end of the force sensor (424).

3. The tailstock clamping force and tension control mechanism for an aircraft blade processing equipment according to claim 2, characterized in that: The tip assembly (3) includes a tip rod (31), a mounting sleeve (32), a rotating seat (33), and a stress-relieving spring (34). The tail end of the tip rod (31) is slidably disposed inside the mounting sleeve (32), and the tip end of the tip rod (31) is disposed outside the housing (21) through an opening (211). The rod body of the tip rod (31) is polygonal. The interior of the mounting sleeve (32) is a polygon that cooperates with the rod body of the tip rod (31). A stop (321) is provided inside the mounting sleeve (32), and the stop (321) is used to abut against the... Top rod (31); one end of the stress-relieving spring (34) is fixedly connected to the tail end inside the mounting sleeve (32), and the other end of the stress-relieving spring (34) is fixedly connected to the tail end of the top rod (31); the rotating seat (33) is sleeved on the mounting sleeve (32), and the mounting sleeve (32) rotates on the rotating seat (33); the bottom of the rotating seat (33) is fixedly set on the nut plate (421), and the top of the rotating seat (33) is slidably set on the top of the housing (21); the mounting sleeve (32) is provided with a starting structure (35).

4. The tailstock clamping force and tension control mechanism for an aircraft blade processing equipment according to claim 1, characterized in that: The drive unit (5) includes a drive motor (51), an auxiliary gear (52), and a pressure push rod (53). The drive motor (51) is slidably disposed at the bottom of the housing (21). The auxiliary gear (52) is disposed at the working end of the drive motor (51). The auxiliary gear (52) is used to mesh with the main gear (43) for transmission. The drive motor (51) provides power for the rotation of the main gear (43) through the auxiliary gear (52). The pressure push rod (53) is fixedly disposed on the housing (21). The working end of the pressure push rod (53) is fixedly disposed on the base of the drive motor (51). The pressure push rod (53) is used to push the drive motor (51) to slide. An auxiliary plate (54) is rotatably disposed on the end face of the working end of the drive motor (51).

5. The tailstock clamping force and tension control mechanism for an aircraft blade processing equipment according to claim 3, characterized in that: The starting structure (35) includes a starting cavity (351), a trigger block (352), a trigger groove (353), and a pressure hose (354); the trigger groove (353) is disposed on the stop block (321), and one end of the trigger block (352) is slidably disposed in the trigger groove (353); the starting cavity (351) is disposed in the mounting sleeve (32), and one end of the starting cavity (351) is connected to the trigger groove (353); one end of the pressure hose (354) is rotatably disposed in the middle of the mounting sleeve (32), and the other end of the pressure hose (354) is connected to the drive unit (5); the other end of the starting cavity (351) is connected to the pressure hose (354).

6. The tailstock clamping force and tension control mechanism for an aircraft blade processing equipment according to claim 1, characterized in that: The rotating structure (44) includes a drive groove (441) and a drive tooth (442); the drive groove (441) is disposed on the inner ring of the main gear (43), the bottom of the drive tooth (442) is fixedly disposed on one end of the lead screw (41), and the top of the drive tooth (442) is disposed in the drive groove (441); a sliding groove (443) is disposed on the circumference of the lead screw (41) on one side of the drive tooth (442), and a slider (444) is slidably disposed on the sliding groove (443), and the top of the slider (444) is fixedly disposed on the inner ring of the main gear (43).

7. The tailstock clamping force and tension control mechanism for an aircraft blade processing equipment according to claim 4, characterized in that: A retaining assembly (6) is provided on the housing (21). The retaining assembly (6) is located at the main gear (43) and the auxiliary gear (52). The retaining assembly (6) includes a base plate (61), a first baffle (62), a second baffle (63), a push rod (64), a pushing mechanism (65), and an auxiliary mechanism (66). The base plate (61) is slidably disposed on the housing (21). The first baffle (62) is fixedly disposed on one side of the base plate (61), and the second baffle (63) is slidably disposed on the other side of the base plate (61). The push rod (64) is slidably disposed on the housing (21), and one end of the push rod (64) is disposed on the auxiliary plate (54). The push rod (64) is provided with a groove (641). The pushing mechanism (65) is used to push the base plate (61) to slide longitudinally. The auxiliary mechanism (66) is used to push the second baffle (63) to slide laterally.

8. The tailstock clamping force and tension control mechanism for an aircraft blade processing equipment according to claim 7, characterized in that: The pushing mechanism (65) includes a slide rod (651), a roller (652), and a top spring (653); the top spring (653) is sleeved on the slide rod (651), one end of the top spring (653) is fixedly mounted on the housing (21), and the other end of the top spring (653) is fixedly mounted on the slide rod (651); the roller (652) is rotatably mounted on one end of the slide rod (651), and the roller (652) is kept in contact with the top rod (64) by the top spring (653); the other end of the slide rod (651) is fixedly mounted on the bottom of the base plate (61).

9. The tailstock clamping force and tension control mechanism for an aircraft blade processing equipment according to claim 7, characterized in that: The auxiliary mechanism (66) includes a drive cylinder (661), a connecting pipe (662), an auxiliary cylinder (663), and an auxiliary rod (664); the drive cylinder (661) is fixedly mounted on the housing (21), and the other end of the push rod (64) is slidably mounted inside the drive cylinder (661); the auxiliary cylinder (663) is mounted on the housing (21) on one side of the second baffle (63); one end of the connecting pipe (662) is connected to the drive cylinder (661), and the other end of the connecting pipe (662) is connected to the auxiliary cylinder (663).

10. The tailstock clamping force and tension control mechanism for an aircraft blade processing equipment according to claim 2, characterized in that: A force value display (212) is provided on the housing (21), and the force value display (212) is connected to the force sensor (424).

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