Screw rod straightener

Abstract

The invention discloses a lead screw straightener, and relates to the technical field of lead screw straightening, the lead screw straightener comprises a frame body, the frame body comprises a bottom plate and two supporting frames, the top of the bottom plate is connected with a supporting plate, one side of the supporting plate is provided with a plurality of laser displacement sensors, a blanking plate is connected between the two supporting frames, and the lead screw straightener further comprises a driving mechanism assembled on one side of the supporting frames, in the automatic feeding link, through the contact effect of a poke rod and a contact block and in combination with linkage of a sliding plate and a compression spring, batched accurate feeding and rapid resetting of the ball screws are achieved, the whole feeding and clamping process is efficient and smooth, after straightening is completed, a connecting cylinder continues to rotate, and the automatic feeding and clamping device is used for automatically feeding the ball screws. A telescopic column and an abutting column are used for driving a first arc-shaped plate and a second arc-shaped plate to automatically open and release a ball screw, in the process, accurate reset of the first arc-shaped plate and the second arc-shaped plate is ensured through an energy storage and release mechanism of an arc-shaped spring, and preparation is made for next-round machining.

Description

Technical Field

[0001] The invention relates to the technical field of screw rod straightening, and in particular to a screw rod straightener. Background Art

[0002] As the core transmission element in the field of modern tool machinery and precision manufacturing, ball screws have excellent performance in that they can seamlessly convert rotational power into precise linear motion, or efficiently convert torque into axial reciprocating drive force, while exhibiting unparalleled high precision, reversible operability and high efficiency. This feature makes ball screws indispensable in aerospace, precision machine tools, automation equipment and various high-tech instruments.

[0003] However, in the production and use of ball screws, a key link is to ensure the precise straightening of their straightness. The existing technology mainly relies on manual operation for this step, which not only requires complex tools such as dial indicators, precision gauge stands, customized U-shaped iron blocks, special flat shovels, and heavy-duty presses, but also relies heavily on the professional skills and rich experience of the operators. The ball screw needs to be securely placed on the U-shaped iron block, and then the dial indicator is used to conduct a comprehensive and detailed bending test on the screw to accurately locate the bending point and its degree. Next, the special flat shovel is accurately placed at the bottom diameter position where the screw is most significantly bent, and pressure is applied using a sledgehammer press to offset the original bending by producing reverse deformation. During this process, the strength, angle, and even direction of the knocking need to be flexibly adjusted according to the specific circumstances of the bending, so as to strive to achieve the most ideal straightening effect with each knock.

[0004] However, it is undeniable that the manual straightening method has significant limitations: its accuracy is highly dependent on the personal ability of the operator, and it is difficult to ensure that each screw can meet completely consistent high-precision standards. At the same time, the inefficiency of manual operation also limits its application in batch processing of ball screws, greatly increasing production costs and time cycles. Summary of the invention

[0005] The purpose of the present invention is to propose a solution to solve the problem that its accuracy is highly dependent on the personal ability and state of the operator, and it is difficult to ensure that each screw can reach a completely consistent high-precision standard. At the same time, the inefficiency of manual operation also limits its application in batch processing of ball screws, greatly increasing the production cost and time cycle.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a screw straightener: comprising a frame body, the frame body comprising a bottom plate and two support frames installed on the top of the bottom plate, the top of the bottom plate is connected to a support plate, one side of the support plate is installed with a plurality of laser displacement sensors, a blanking plate is connected between the two support frames, and also comprises: a driving mechanism assembled on one side of the support frame, and a pressing component and a clamping component installed inside the driving mechanism; The clamping assembly includes an arc groove opened inside the driving mechanism, and the first arc plate and the second arc plate are slidably connected inside the arc groove, the outer walls of the first arc plate and the second arc plate are connected with a plurality of gear teeth, the inner wall of the arc groove is fixedly connected with a fixing rod, the outer periphery of the fixing rod is rotatably connected with a rotating gear contacting with the first arc plate and the second arc plate, and the rotating gear is meshed with the plurality of gear teeth, the inner wall of the arc groove is fixedly connected with two symmetrical fixing plates, one side of the two fixing plates is equipped with a plurality of arc rods slidably connected with the first arc plate and the second arc plate, the outer periphery of the arc rods is sleeved with arc springs, one side of the first arc plate and the second arc plate is connected with a rolling member through the arc groove, both sides of the first arc plate are connected with contact members, and the top of the contact member is connected with a blanking assembly; Under the rebound action of the arc spring, the first arc plate and the second arc plate relatively clamp the ball screw. As the driving mechanism rotates, the ball screw approaches the support plate, and its straightness is measured by the laser displacement sensor. If straightening is required, the pressing component intervenes for adjustment. After straightening, the ball screw continues to rotate with the driving mechanism, and the contact piece triggers the first arc plate and the second arc plate to open, releasing the ball screw to fall along the blanking plate. When the contact piece contacts again, the first arc plate and the second arc plate open again, ready to clamp the next ball screw.

[0007] As a further description of the above technical solution: The rolling element comprises an arc block installed on one side of the first arc plate and the second arc plate, and a plurality of electric rollers arranged in an arc are connected inside the arc block.

[0008] As a further description of the above technical solution: The contact member includes a sleeve plate installed on the outer periphery of the rotating shaft and the connecting rod, and a telescopic groove opened inside the first arc-shaped plate. A movable column is connected to one side of the sleeve plate, and the movable column is slidably connected to the support frame through the movable groove. Two abutment columns are fixedly connected to one side of the sleeve plate, and a telescopic column is slidably connected inside the telescopic groove. A telescopic spring is connected between the telescopic column and the telescopic groove, and the inclined surface of the telescopic column contacts the abutment column.

[0009] As a further description of the above technical solution: The driving mechanism includes a servo motor arranged on one side of the support frame, the servo motor is connected to a rotating shaft through an output shaft, one side of the rotating shaft is fixedly connected to a connecting cylinder, the side of the connecting cylinder away from the rotating shaft is connected to a connecting rod, a limiting rod is installed on one side of the connecting rod, the rotating shaft and the connecting rod are both slidably connected to the support frame through a sliding groove, the outer periphery of the rotating shaft and the connecting rod are connected to bearings, the outer periphery of the connecting cylinder is provided with a groove, the interior of the connecting cylinder is provided with an inner cavity, the outer periphery of the rotating shaft and the connecting rod is fixedly connected with a clamping block, and avoidance grooves are provided on both sides of the connecting cylinder.

[0010] As a further description of the above technical solution: The pressing assembly includes a rotating cylinder rotatably connected to the inside of the connecting cylinder and a moving rod slidably connected to the support frame through an inclined groove, a fixed cylinder is installed on the outer periphery of the moving rod, an air pump and a motor are respectively connected to the two sides of the rotating cylinder, and a plurality of air holes with different distributions are opened on the outer periphery of the rotating cylinder, a pushing groove is opened inside the connecting cylinder, and the pushing groove is connected to the inner cavity through a connecting port, a pushing block is slidably connected to the inside of the pushing groove, and a sealing sheet is assembled on the outer periphery of the pushing block.

[0011] As a further description of the above technical solution: The outer periphery of the socket plate is fixedly connected with a material discharge component, and the material discharge component includes a connecting frame installed on the outer periphery of the two socket plates and a toggle rod connected to the outer periphery of the connecting tube, one side of the connecting frame is connected to a plurality of positioning rods, and the inner walls on both sides of the connecting frame are slidably connected with sliding plates, the sliding plates are slidably connected to the positioning rods, and the outer periphery of the positioning rods is sleeved with a compression spring, a material discharge port is opened on the surface of the sliding plate, and the bottom of the sliding plate is connected to a contact block that contacts the toggle rod.

[0012] As a further description of the above technical solution: The periphery of the driving mechanism is connected with an adjusting component, which includes a moving frame installed on the periphery of the servo motor, the moving frame and the supporting frame are slidably connected by a slide rail, the bottom of the moving frame is connected with a vertical plate, the interior of the vertical plate is provided with a lifting groove, the lifting groove and the moving rod are slidably connected by a lifting column, fixed arc plates are fixedly connected on both sides of the supporting frame, a one-way piece in contact with the fixed arc plates is movably connected on the periphery of the rotating shaft, a plurality of fixed blocks are fixedly connected on both sides of the supporting frame, a sliding rod is connected between every two fixed blocks, a sliding sleeve rod is slidably connected to the outer periphery of the sliding rod, the bottom of the sliding sleeve rod is fixedly connected to the bearing, and a pressure spring is connected between the sliding sleeve rod and the fixed block.

[0013] As a further description of the above technical solution: The one-way member includes an eccentric plate movably mounted on the outer periphery of the rotating shaft, an inner groove is opened inside the eccentric plate, and a plurality of center rods are fixedly connected between the inner walls of the inner groove, a limit block which is rotatably connected to the outer periphery of each center rod and is engaged with the engaging block, a plurality of spring sheets which are in contact with the limit blocks are mounted on the inner wall of the inner groove, and a plurality of limit columns which limit the limit blocks are fixedly connected to the inner wall of the inner groove.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: In the process of clamping and straightening the ball screw, we adopted an automated mechanism. First, through the rebound effect of the arc spring, the first arc plate and the second arc plate fit the ball screw tightly, and the electric roller implements a firm clamping, which effectively prevents the ball screw from falling off during processing and ensures the stability and safety of the operation. Then, the laser displacement sensor accurately detects the straightness of the ball screw. If it does not meet the standard, the motor adjusts the position of the rotating cylinder, cooperates with the airflow generated by the air pump, and the multi-point synchronous push block performs secondary straightening on the screw, which significantly improves the straightness accuracy. After the straightening is completed, the connecting cylinder continues to rotate, and the ingenious design of the telescopic column and the abutment column is used to drive the first arc plate and the second arc plate to automatically open and release the ball screw, and realize automatic blanking at the same time. In this process, the energy storage and release mechanism of the arc spring ensures the accurate reset of the first arc plate and the second arc plate, preparing for the next round of processing. In addition, the rotation function of the electric roller enables the outer periphery of the ball screw to be effectively pressed and straightened in all directions, enhancing the adaptability and flexibility of the equipment. In the automatic feeding link, the contact between the toggle rod and the contact block, combined with the linkage of the sliding plate and the compression spring, realizes the accurate delivery and rapid reset of the ball screw. The entire feeding and clamping process is efficient and smooth, thereby realizing automatic batch straightening for batch ball screws. In order to efficiently adapt to the processing requirements of ball screws of various specifications, a distance adjustment mechanism is designed. When the servo motor reverses, the clamping block rotates in the opposite direction and cooperates closely with the limit block through the linkage between the rotating shaft and the connecting rod. This interaction not only drives the eccentric plate to rotate around the rotating shaft, but also drives the overall structure to slide smoothly in the preset slide groove, thereby flexibly adjusting the distance from the support plate. At the same time, the servo motor also synchronously drives the moving frame to slide on the slide rail, accurately adjusting the distance between the connecting tube and the support plate to adapt to ball screws of different sizes. In addition, the movement of the moving frame also drives the vertical plate and the lifting column to slide vertically in the lifting slot. Through the linkage of the moving rod, the distance between the fixed tube and the connecting tube is finely adjusted, ensuring the coordinated operation of the entire system. The specially designed bearing and sliding sleeve rod combination uses the resilience of the pressure spring to maintain the close fit between the eccentric plate and the fixed arc plate when the servo motor rotates forward, thereby enhancing the stability and processing accuracy of the mechanism. At the same time, the ingenious combination of the limit block and the spring sheet limits the rotation of the eccentric plate during forward rotation, thereby achieving precise control of its motion state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shows a schematic diagram of the overall structure according to the present invention; Figure 2 It is shown that according to the present invention Figure 1 The enlarged structural diagram at A in the middle; Figure 3 Another perspective structural schematic diagram according to the present invention is shown; Figure 4 A schematic diagram of the frame structure according to the present invention is shown; Figure 5 A schematic diagram of the structure of the driving mechanism according to the present invention is shown; Figure 6 A schematic diagram of the structure of the pressing assembly according to the present invention is shown; Figure 7 A schematic diagram of the structure of the clamping assembly according to the present invention is shown; Figure 8 It is shown that according to the present invention Figure 7 The enlarged structural diagram at B in the middle; Fig. 9 A schematic diagram of the structure of the socket plate according to the present invention is shown; Fig.10 A schematic structural diagram of a blanking assembly according to the present invention is shown; Fig.11 A schematic diagram of the eccentric plate structure according to the present invention is shown.

[0016] Legend: 10. frame; 11. bottom plate; 12. support frame; 121. slide slot; 122. inclined slot; 123. moving slot; 13. blanking plate; 14. support plate; 141. laser displacement sensor; 20. driving mechanism; 21. servo motor; 22. rotating shaft; 221. clamping block; 23. connecting rod; 24. limiting rod; 25. bearing; 26. connecting cylinder; 261. groove; 262. inner cavity; 263. avoidance groove; 30. Pressing assembly; 31. Rotating cylinder; 311. Air vent; 32. Air pump; 33. Motor; 34. Connecting port; 35. Pushing groove; 351. Pushing block; 352. Sealing sheet; 36. Moving rod; 361. Fixed cylinder; 40. Clamping assembly; 41. Arc groove; 42. First arc plate; 43. Second arc plate; 44. Gear; 45. Fixed rod; 46. Rotating gear; 47. Fixed plate; 471. Arc rod; 472. Arc spring; 473. Arc block; 474. Electric roller; 48. Telescopic groove; 481. Telescopic column; 482. Telescopic spring; 49. Socket plate; 491. Moving column; 492. Abutting column; 50. Feeding assembly; 51. Toggle rod; 52. Connecting frame; 53. Sliding plate; 54. Contact block; 55. Positioning rod; 56. Compression spring; 57. Feeding port; 60. Adjustment assembly; 61. Moving frame; 62. Slide rail; 63. Fixed arc plate; 631. Eccentric plate; 632. Inner groove; 633. Center rod; 634. Limit block; 635. Spring sheet; 636. Limit column; 64. Fixed block; 641. Slide rod; 642. Sliding sleeve rod; 643. Pressure spring; 65. Vertical plate; 651. Lifting groove; 652. Lifting column. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figure 1-Figure 11 As shown, a screw straightener provided by the present invention includes a frame body 10, the frame body 10 includes a bottom plate 11 and two support frames 12 installed on the top of the bottom plate 11, the top of the bottom plate 11 is connected to a support plate 14, one side of the support plate 14 is installed with a plurality of laser displacement sensors 141, a blanking plate 13 is connected between the two support frames 12, and also includes: a driving mechanism 20 assembled on one side of the support frame 12, the driving mechanism 20 includes a servo motor 21 arranged on one side of the support frame 12, the servo motor 21 is connected to a rotating shaft 22 through an output shaft, and the rotating shaft 22 A connecting cylinder 26 is fixedly connected to one side of the connecting cylinder 26, a connecting rod 23 is connected to the side of the connecting cylinder 26 away from the rotating shaft 22, a limiting rod 24 is installed on one side of the connecting rod 23, the rotating shaft 22 and the connecting rod 23 are both slidably connected to the support frame 12 through the slide groove 121, the outer peripheries of the rotating shaft 22 and the connecting rod 23 are connected to the bearing 25, a groove 261 is provided on the outer periphery of the connecting cylinder 26, an inner cavity 262 is provided inside the connecting cylinder 26, a clamping block 221 is fixedly connected to the outer periphery of the rotating shaft 22 and the connecting rod 23, and avoidance grooves 263 are provided on both sides of the connecting cylinder 26; In the process of straightening the ball screw, first we need to use the clamping assembly 40 to firmly clamp the ball screw placed in the specific groove 261. This step is very important because it ensures that the ball screw will not move or shake due to external force during the straightening process, thereby ensuring the accuracy and stability of the straightening. Next, start the servo motor 21, which will drive the rotating shaft 22 to start rotating in the forward direction. As the rotating shaft 22 rotates, the connecting cylinder 26 connected thereto and the part connected to the connecting cylinder 26 through the connecting rod 23 will also rotate synchronously. This rotational movement will gradually make the clamped ball screw approach the support plate 14 until the two are tightly fitted. When the ball screw is in full contact with the support plate 14, we use the laser displacement sensor 141 for high-precision detection. The laser displacement sensor 141 can very accurately measure the slight distance changes between the ball screw and the support plate 14, thereby helping us to observe whether the ball screw is bent. Through this step, we can accurately evaluate the straightness of the ball screw and make further adjustments or straightening treatments as needed.

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, as well as the pressing assembly 30 and the clamping assembly 40 installed inside the driving mechanism 20, the pressing assembly 30 includes a rotating cylinder 31 rotatably connected to the inside of the connecting cylinder 26 and a moving rod 36 slidably connected to the support frame 12 through an inclined groove 122, a fixed cylinder 361 is installed on the outer periphery of the moving rod 36, an air pump 32 and a motor 33 are connected to the two sides of the rotating cylinder 31 respectively, and a plurality of differently distributed air holes 311 are opened on the outer periphery of the rotating cylinder 31, three pushing grooves 35 are opened inside the connecting cylinder 26, and the pushing groove 35 is connected to the inner cavity 262 through a connecting port 34, a pushing block 351 is slidably connected to the inside of the pushing groove 35, and a sealing sheet 352 is assembled on the outer periphery of the pushing block 351; When the laser displacement sensor 141 detects that the ball screw is bent, the straightening process will be started. First, the motor 33 is activated to drive the rotating cylinder 31 to rotate in the inner cavity 262. This rotation action is intended to accurately align the air holes 311 opened on the outer circumference of the rotating cylinder 31 with the position of the ball screw bending that needs to be corrected. Once the air hole 311 is aligned with and connected to the preset connection port 34, the air pump 32 is immediately started to fill the rotating cylinder 31 with gas. As the gas is injected, the gas flows along the air hole 311 to the connection port 34, forming a directional airflow. Under the pressure generated inside the rotating cylinder 31, the airflow pushes the push block 351 to move quickly in the push groove 35. The movement of the push blocks 351 is the core of the straightening process. They apply pressure to the curved part of the ball screw precisely according to the push of the airflow. Since three sets of push blocks 351 and corresponding connecting ports 34 are provided in this design, combined with seven different combinations of the air holes 311 on the outer periphery of the rotating cylinder 31, the system can flexibly cope with various bending conditions and achieve precise straightening. By repeatedly starting the air pump 32, the air pump 32 is continuously bent at the bent part of the ball screw, thereby achieving the effect of accurately straightening the ball screw; It is particularly worth mentioning that the connecting port 34 is designed as a conical structure. This design cleverly utilizes the acceleration effect of the airflow in the conical channel, further enhancing the moving speed and force of the pushing block 351, thereby increasing the resistance pressure on the bending part of the ball screw. This enhanced effect not only improves the accuracy of straightening, but also speeds up the straightening process.

[0020] like Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown, the clamping assembly 40 includes an arc groove 41 opened inside the driving mechanism 20, and the first arc plate 42 and the second arc plate 43 are slidably connected inside the arc groove 41, and the outer walls of the first arc plate 42 and the second arc plate 43 are connected with a plurality of gear teeth 44, and the inner wall of the arc groove 41 is fixedly connected with a fixing rod 45, and the outer periphery of the fixing rod 45 is rotatably connected with a rotating gear 46 that contacts the first arc plate 42 and the second arc plate 43, and the rotating gear 46 is meshed with the plurality of gear teeth 44, and the inner wall of the arc groove 41 is fixedly connected with two symmetrical fixing plates 47, and one side of the two fixing plates 47 is installed with a plurality of arc rods 471 that are slidably connected with the first arc plate 42 and the second arc plate 43, and the outer periphery of the arc rods 471 is sleeved with arc springs 472, and one side of the first arc plate 42 and the second arc plate 43 is connected with Rolling member, the rolling member includes an arc block 473 installed on one side of the first arc plate 42 and the second arc plate 43, the arc block 473 is internally connected with a plurality of electric rollers 474 arranged in an arc shape, the first arc plate 42 is connected with contact members on both sides, the contact members include a sleeve plate 49 installed on the outer periphery of the rotating shaft 22 and the connecting rod 23 and a telescopic slot 48 opened in the first arc plate 42, one side of the sleeve plate 49 is connected with a moving column 491, the moving column 491 is slidably connected to the support frame 12 through the moving slot 123, one side of the sleeve plate 49 is fixedly connected with two abutting columns 492, the telescopic column 481 is slidably connected inside the telescopic slot 48, a telescopic spring 482 is connected between the telescopic column 481 and the telescopic slot 48, and the inclined surface of the telescopic column 481 is in contact with the abutting column 492, and the top of the sleeve plate 49 is connected with a blanking assembly 50; In the process of clamping the ball screw, a rebound mechanism of several arc springs 472 is adopted. The elastic force of these springs causes the first arc plate 42 and the second arc plate 43 to slide smoothly along the outer circumference of the arc rod 471. At the same time, they also slide relatively along the arc groove 41 carefully designed inside the connecting tube 26. This linkage mechanism ensures that the first arc plate 42 and the second arc plate 43 can fit the ball screw tightly, and the electric roller 474 on the arc block 473 connected to them can firmly clamp the ball screw. This clamping method is not only effective, but also can prevent the ball screw from accidentally falling out of the groove 261 during the rotation of the connecting tube 26, thereby ensuring the stability and safety of the entire straightening process. After the push block 351 performs preliminary pressing and straightening on the bent ball screw, the next step is the key straightness detection and adjustment step. The laser displacement sensor 141 is used to accurately measure the straightness of the ball screw to ensure that it meets the predetermined requirements. Once the straightness of the ball screw meets the standard, the connecting cylinder 26 will continue to rotate to make the clamped ball screw gradually approach the fixed cylinder 361. At this time, in order to further improve the straightness of the ball screw, the motor 33 is started to adjust the position of the rotating cylinder 31. Through precise control, the air holes 311 opened on the outer periphery of the rotating cylinder 31 correspond to and are connected with the three connecting ports 34 one by one. Then the air pump 32 is started to generate air pressure. This airflow passes through the air holes 311 and the connecting ports 34, and strongly blows the three push blocks 351 to perform secondary auxiliary straightening on the ball screw at the same time. This multi-point simultaneous pressure method can more comprehensively adjust the bending state of the ball screw and ensure that its straightness in all directions reaches the optimal state as much as possible. After the secondary auxiliary straightening work is successfully completed, the connecting tube 26 continues to rotate. During this process, the extended telescopic column 481 comes into contact with the abutting column 492 below. With the continuous rotation power of the connecting tube 26, the abutting column 492 drives the telescopic column 481 to slide smoothly in the avoidance groove 263. At the same time, the first arc plate 42 connected to the telescopic column 481 drives the rotating gear 46 to rotate on the outer periphery of the fixed rod 45 through the meshing action of the gear teeth 44 thereon and the rotating gear 46. This rotation action in turn causes the second arc plate 43 to slide along the path of the arc groove 41, resulting in the gradual opening between the first arc plate 42 and the second arc plate 43, forming a channel for releasing the ball screw. During this process, the arc spring 472 is gradually compressed to accumulate energy for the subsequent reset operation. Once the ball screw loses its clamping force, it will naturally slide down along the preset blanking plate 13 path, realizing the automatic blanking process of the ball screw. When the telescopic column 481 moves to the limit position of the avoidance groove 263 and is stuck, the further rotation of the connecting tube 26 will cause the abutting column 492 to press the telescopic column 481, so that the telescopic column 481 slides in the space in the telescopic groove 48 and applies pressure to the built-in telescopic spring 482. Once the telescopic column 481 is separated from the abutting column 492 below, the telescopic spring 482 rebounds quickly and pushes the telescopic column 481 back to its original position. At this time, the compressed arc spring 472 also releases energy synchronously, pushing the first arc plate 42 and the second arc plate 43 back to the initial clamping state, preparing for the next clamping operation. In order to automatically clamp the next ball screw efficiently, when the groove 261 of the connecting tube 26 is about to rotate to the upper position, the telescopic column 481 will contact the upper abutment column 492 in advance, repeating the above opening action, creating conditions for the new ball screw to enter the groove 261 and be automatically clamped. Once the telescopic column 481 is separated from the upper abutment column 492, the first arc plate 42 and the second arc plate 43 will quickly reset to clamp the newly inserted ball screw. In addition, in order to flexibly adjust the pressure on different peripheral positions of the ball screw, a rotation function of the electric roller 474 is designed. By starting the electric roller 474, the clamped ball screw can be driven to rotate, thereby easily adjusting its direction to ensure that the periphery in different directions can be effectively pressed and straightened. This design significantly improves the adaptability and flexibility of the equipment.

[0021] like Figure 1 , Figure 3 , Figure 5 , Fig.10 As shown, the outer periphery of the sleeve plate 49 is fixedly connected with a material discharge assembly 50, and the material discharge assembly 50 includes a connecting frame 52 installed on the outer periphery of the two sleeve plates 49 and a toggle rod 51 connected to the outer periphery of the connecting tube 26, one side of the connecting frame 52 is connected to a plurality of positioning rods 55, and the inner walls on both sides of the connecting frame 52 are slidably connected with sliding plates 53, the sliding plates 53 are slidably connected with the positioning rods 55, and the outer periphery of the positioning rods 55 is sleeved with a compression spring 56, the surface of the sliding plate 53 is provided with a material discharge port 57, and the bottom of the sliding plate 53 is connected to a contact block 54 in contact with the toggle rod 51; During the continuous rotation of the connecting cylinder 26, when the groove 261 is about to rotate to its top position, the automatic feeding mechanism starts to start. At this time, the toggle rod 51 installed on the outer periphery of the connecting cylinder 26 contacts the contact block 54 with the rotation action. As the connecting cylinder 26 continues to rotate, this contact force is converted into a driving force that pushes the sliding plate 53 to slide inside the connecting frame 52. During the movement, the sliding plate 53 not only slides smoothly along the outer periphery of the positioning rod 55, but also squeezes the built-in compression spring 56 to store energy for the subsequent reset action. When the material discharge port 57 on the sliding plate 53 completely overlaps with the opening of the connecting frame 52, the best time for material discharge is reached. At this time, the ball screw to be processed smoothly falls from the preset storage position and enters the groove 261 through the material discharge port 57, ready for the next round of straightening and processing; Then, as the connecting cylinder 26 further rotates, the toggle rod 51 gradually breaks away from the contact with the contact block 54. This release action immediately triggers the rebound effect of the compression spring 56, pushing the sliding plate 53 to quickly return to the initial position, ready for the next feeding operation; At the same time, due to the rotation of the connecting tube 26, the telescopic column 481 that was originally in contact with the upper abutment column 492 also automatically disengages from the contact. This change allows the previously compressed arc spring 472 to release energy, pushing the first arc plate 42 and the second arc plate 43 to automatically move together and clamp the ball screw newly placed in the groove 261. At this point, the entire ball screw's automated loading and clamping process is successfully completed, laying a solid foundation for subsequent processing.

[0022] like Figure 1 , Figure 2 , Figure 3 , Fig.11 As shown, the periphery of the driving mechanism 20 is connected to an adjusting component 60, and the adjusting component 60 includes a moving frame 61 installed on the periphery of the servo motor 21. The moving frame 61 is slidably connected to the support frame 12 through a slide rail 62. The bottom of the moving frame 61 is connected to a vertical plate 65, and a lifting groove 651 is opened inside the vertical plate 65. The lifting groove 651 and the moving rod 36 are slidably connected through a lifting column 652. Fixed arc plates 63 are fixedly connected to both sides of the support frame 12. The periphery of the rotating shaft 22 is movably connected to a one-way piece that contacts the fixed arc plate 63. The one-way piece includes an eccentric plate 631 movably installed on the periphery of the rotating shaft 22. The eccentric plate 631 is opened inside the inner groove 632, and the inner groove A plurality of center rods 633 are fixedly connected between the inner walls of the inner groove 632, and a limit block 634 that is engaged with the clamping block 221 is rotatably connected to the outer periphery of each center rod 633. A plurality of spring sheets 635 that are in contact with the limit block 634 are installed on the inner wall of the inner groove 632, and a plurality of limit columns 636 that limit the limit block 634 are fixedly connected to the inner wall of the inner groove 632. A plurality of fixed blocks 64 are fixedly connected on both sides of the support frame 12, and a sliding rod 641 is connected between every two fixed blocks 64. A sliding sleeve rod 642 is slidably connected to the outer periphery of the sliding rod 641, and the bottom of the sliding sleeve rod 642 is fixedly connected to the bearing 25, and a pressure spring 643 is connected between the sliding sleeve rod 642 and the fixed block 64; In order to flexibly adapt to the processing requirements of ball screws of different sizes, a distance adjustment mechanism is specially designed. The servo motor 21 is started to perform a reverse operation. This power is transmitted to the connecting rod 23 through the rotating shaft 22, thereby driving the clamping block 221 connected to its outer periphery to rotate in the opposite direction. With the clamping action of the clamping block 221 and the limit block 634, since the limit block 634 is firmly restricted by the limit column 636, the limit block 634 will drive the eccentric plate 631 to rotate around the rotating shaft 22 as the center. This rotation action causes the eccentric plate 631 to come into contact with the fixed arc plate 63, and with the help of its thrust, the rotating shaft 22 and the connecting rod 23 are pushed to slide smoothly in the preset slide groove 121; At the same time, as the rotating shaft 22 and the connecting rod 23 move linearly, they also pull the sleeve plate 49 to move accordingly. The sleeve plate 49 slides in the moving groove 123 through the moving column 491 connected thereto, thereby realizing flexible adjustment of the distance between the sleeve plate 49 and the support plate 14. In addition, when the servo motor 21 drives the rotating shaft 22 to move, it also synchronously drives the moving frame 61 to slide smoothly in the slide rail 62, further ensuring the precise adjustment of the distance between the connecting cylinder 26 and the support plate 14 to meet the processing requirements of ball screws of different sizes. It is worth mentioning that, with the movement of the moving frame 61, the vertical plate 65 is also driven synchronously. Since the lifting column 652 is firmly restricted in the lifting groove 651, the movement of the vertical plate 65 will cause the lifting column 652 to slide vertically in the lifting groove 651. This sliding action further drives the moving rod 36 to move accordingly in the inclined groove 122 through the connection relationship between the lifting column 652 and the moving rod 36. Finally, the displacement of the moving rod 36 will drive the fixed cylinder 361 to adjust the distance between the connecting cylinder 26 and the support plate 14, and also realize the precise adjustment of the distance between the connecting cylinder 26, thereby ensuring the coordination and cooperation of various components in the whole straightening process. When the rotating shaft 22 and the connecting rod 23 connected thereto perform a moving action, the bearing 25 installed on the connecting rod 23 will be driven to move synchronously. During this process, the sliding sleeve rod 642 connected to the outer periphery of the bearing 25 will slide smoothly along the outer surface of the sliding rod 641, while stretching the pressure spring 643 connected thereto. This design ensures that when the servo motor 21 rotates forward, the pressure spring 643 can use its rebound force to always apply tension to the sliding sleeve rod 642, thereby driving the bearing 25 and the rotating shaft 22 and connecting rod 23 connected thereto, so that the eccentric plate 631 can fit tightly against the fixed arc plate 63, thereby ensuring the stability and accuracy of the mechanism during operation; On the other hand, when the servo motor 21 rotates forward and the clamping block 221 contacts the limit block 634, the limit block 634 will rotate with the center rod 633 as the rotation center and squeeze the spring sheet 635 in the process. This mechanism cleverly limits the rotational freedom of the eccentric plate 631 when the servo motor 21 rotates forward, ensuring that it does not rotate with the rotation of the rotating shaft 22 at this stage, thereby achieving precise control of the movement state of the eccentric plate 631 to meet the specific requirements of the position relationship of the mechanism in different processing stages.

[0023] Working principle: In the process of straightening the ball screw, we adopt a set of sophisticated automated processes. First, the ball screw placed in the groove 261 is firmly clamped by the clamping assembly 40, and then the servo motor 21 is started to drive the rotating shaft 22 and the connecting cylinder 26 to rotate, so that the ball screw gradually approaches the support plate 14 until it fits tightly; The laser displacement sensor 141 is used to accurately detect the slight distance change between the ball screw and the support plate 14. Once a bend is found, the straightening mechanism is immediately started. The motor 33 drives the rotating cylinder 31 to rotate so that the air holes 311 are aligned with the bent part, and the air pump 32 injects gas to push the push block 351 to apply pressure to the bent part for preliminary straightening. This process combines three groups of push blocks 351 with seven types of air holes 311 to flexibly cope with various bending conditions. After the initial straightening, the laser displacement sensor 141 is used again to detect the straightness to ensure that it meets the standard. Then, the position of the rotating cylinder 31 is adjusted so that all the air holes 311 are aligned with the connecting port 34 at the same time. The air pump 32 is started again to apply pressure at multiple points at the same time to achieve secondary auxiliary straightening to ensure that the ball screw fully reaches the optimal straightness. After the straightening is completed, the connecting cylinder 26 continues to rotate, and through the interaction between the telescopic column 481 and the abutting column 492, the first arc plate 42 and the second arc plate 43 are driven to open, and the ball screw is released to slide along the blanking plate 13 to complete the automatic blanking. The telescopic column 481 is then reset under the action of the telescopic spring 482 and the arc spring 472 to prepare for the next clamping operation; When the groove 261 of the connecting tube 26 rotates upward, the telescopic column 481 contacts the upper abutment column 492 in advance and repeats the opening action to prepare for the entry and automatic clamping of the new ball screw. Once separated, the first arc plate 42 and the second arc plate 43 quickly reset and clamp the new ball screw, thereby realizing an efficient and continuous automated straightening process.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screw straightener, comprising a frame (10), the frame (10) comprising a bottom plate (11) and two support frames (12) mounted on the top of the bottom plate (11), the top of the bottom plate (11) being connected to a support plate (14), one side of the support plate (14) being mounted with a plurality of laser displacement sensors (141), a blanking plate (13) being connected between the two support frames (12), characterized in that: Also includes: A driving mechanism (20) mounted on one side of the support frame (12), and a pressing assembly (30) and a clamping assembly (40) mounted inside the driving mechanism (20); The clamping assembly (40) comprises an arc groove (41) provided inside the driving mechanism (20), wherein a first arc plate (42) and a second arc plate (43) are slidably connected inside the arc groove (41), the outer walls of the first arc plate (42) and the second arc plate (43) are both connected with a plurality of gear teeth (44), the inner wall of the arc groove (41) is fixedly connected with a fixing rod (45), the outer periphery of the fixing rod (45) is rotatably connected with a rotating gear (46) in contact with the first arc plate (42) and the second arc plate (43), and the rotating gear (46) and the plurality of gear teeth are connected to each other. (44) meshing connection, the inner wall of the arc groove (41) is fixedly connected with two symmetrical fixed plates (47), one side of the two fixed plates (47) is installed with a plurality of arc rods (471) slidably connected with the first arc plate (42) and the second arc plate (43), the outer circumference of the arc rods (471) is sleeved with arc springs (472), one side of the first arc plate (42) and the second arc plate (43) is connected with rolling parts through the arc groove (41), the two sides of the first arc plate (42) are connected with contact parts, and the top of the contact parts is connected with a blanking assembly (50); Under the rebound action of the arc spring (472), the first arc plate (42) and the second arc plate (43) relatively clamp the ball screw. As the driving mechanism (20) rotates, the ball screw approaches the support plate (14). Its straightness is measured by the laser displacement sensor (141). If straightening is required, the pressing assembly (30) intervenes for adjustment. After straightening, the ball screw continues to rotate with the driving mechanism (20). The contact member triggers the first arc plate (42) and the second arc plate (43) to open, releasing the ball screw to fall along the blanking plate (13). When the contact member contacts again, the first arc plate (42) and the second arc plate (43) open again to prepare to clamp the next ball screw.

2. A screw straightener according to claim 1, characterized in that: The rolling element comprises an arc block (473) installed on one side of the first arc plate (42) and the second arc plate (43), and a plurality of electric rollers (474) arranged in an arc shape are connected inside the arc block (473).

3. A screw straightener according to claim 1, characterized in that: The contact member comprises a sleeve plate (49) mounted on the outer periphery of the rotating shaft (22) and the connecting rod (23), and a telescopic groove (48) opened inside the first arc-shaped plate (42); a movable column (491) is connected to one side of the sleeve plate (49); the movable column (491) and the support frame (12) are slidably connected via the movable groove (123); two abutment columns (492) are fixedly connected to one side of the sleeve plate (49); a telescopic column (481) is slidably connected inside the telescopic groove (48); a telescopic spring (482) is connected between the telescopic column (481) and the telescopic groove (48); and the inclined surface of the telescopic column (481) contacts the abutment column (492).

4. A screw straightener according to claim 1, characterized in that: The driving mechanism (20) comprises a servo motor (21) arranged on one side of the support frame (12); the servo motor (21) is connected to a rotating shaft (22) via an output shaft; a connecting cylinder (26) is fixedly connected to one side of the rotating shaft (22); a connecting rod (23) is connected to the side of the connecting cylinder (26) away from the rotating shaft (22); a limiting rod (24) is installed on one side of the connecting rod (23); the rotating shaft (22) and the connecting rod (23) are both slidably connected to the support frame (12) via a sliding groove (121); the outer peripheries of the rotating shaft (22) and the connecting rod (23) are both connected to bearings (25); a groove (261) is provided on the outer periphery of the connecting cylinder (26); an inner cavity (262) is provided inside the connecting cylinder (26); a clamping block (221) is fixedly connected to the outer periphery of the rotating shaft (22) and the connecting rod (23); and avoidance grooves (263) are provided on both sides of the connecting cylinder (26).

5. A screw straightener according to claim 1, characterized in that: The pressing assembly (30) comprises a rotating cylinder (31) rotatably connected to the interior of the connecting cylinder (26) and a moving rod (36) slidably connected to the support frame (12) via an inclined groove (122); a fixed cylinder (361) is installed on the periphery of the moving rod (36); an air pump (32) and a motor (33) are respectively connected to the two sides of the rotating cylinder (31); a plurality of air holes (311) with different distributions are provided on the periphery of the rotating cylinder (31); a pushing groove (35) is provided inside the connecting cylinder (26); the pushing groove (35) is communicated with the inner cavity (262) via a connecting port (34); a pushing block (351) is slidably connected to the interior of the pushing groove (35); and a sealing sheet (352) is mounted on the periphery of the pushing block (351).

6. A screw straightener according to claim 3, characterized in that: The outer periphery of the sleeve plate (49) is fixedly connected with a material discharge assembly (50), the material discharge assembly (50) comprises a connection frame (52) mounted on the outer periphery of the two sleeve plates (49) and a toggle rod (51) connected to the outer periphery of the connecting tube (26), one side of the connection frame (52) is connected to a plurality of positioning rods (55), the inner walls of both sides of the connection frame (52) are slidably connected with sliding plates (53), the sliding plates (53) are slidably connected to the positioning rods (55), and the outer periphery of the positioning rods (55) is sleeved with a compression spring (56), the surface of the sliding plate (53) is provided with a material discharge port (57), and the bottom of the sliding plate (53) is connected to a contact block (54) in contact with the toggle rod (51).

7. A screw straightener according to claim 4, characterized in that: The outer periphery of the driving mechanism (20) is connected to an adjustment component (60), the adjustment component (60) comprises a moving frame (61) mounted on the outer periphery of the servo motor (21), the moving frame (61) and the support frame (12) are slidably connected via a slide rail (62), a vertical plate (65) is connected to the bottom of the moving frame (61), a lifting groove (651) is provided inside the vertical plate (65), the lifting groove (651) and the moving rod (36) are slidably connected via a lifting column (652), and both sides of the support frame (12) are fixed. A fixed arc plate (63) is connected, the outer periphery of the rotating shaft (22) is movably connected with a one-way piece in contact with the fixed arc plate (63), a plurality of fixed blocks (64) are fixedly connected on both sides of the support frame (12), a sliding rod (641) is connected between every two fixed blocks (64), the outer periphery of the sliding rod (641) is slidably connected with a sliding sleeve rod (642), the bottom of the sliding sleeve rod (642) is fixedly connected to the bearing (25), and a pressure spring (643) is connected between the sliding sleeve rod (642) and the fixed block (64).

8. A screw straightener according to claim 7, characterized in that: The one-way member comprises an eccentric plate (631) movably mounted on the outer periphery of a rotating shaft (22); an inner groove (632) is provided inside the eccentric plate (631); a plurality of center rods (633) are fixedly connected between the inner walls of the inner groove (632); a limit block (634) that is engaged with a clamping block (221) is rotatably connected to the outer periphery of each center rod (633); a plurality of spring sheets (635) that are in contact with the limit blocks (634) are mounted on the inner wall of the inner groove (632); and a plurality of limit columns (636) that are fixedly connected to the inner wall of the inner groove (632) and that limit the limit blocks (634) are fixedly connected to the inner wall of the inner groove (632).

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