Straightening machine for solid shaft production

Abstract

The invention relates to the technical field of transmission shaft solid shaft straightening, and discloses a straightening machine for solid shaft production in order to achieve the purpose, the straightening machine comprises a workbench, a clamping mechanism and a straightening mechanism are arranged on the workbench, a plurality of side pressing plates are slidably connected to the bottom of the straightening mechanism, and the side pressing plates are vertically slidably connected to the bottom of the straightening mechanism. The straightening mechanism is provided with a sliding distance detection device at the position of the side pressing plate, a pressing plate locking device is further arranged in the straightening mechanism, during straightening, the clamping mechanism clamps the solid shaft and drives the solid shaft to rotate, in the rotating process of the solid shaft, the bent part jacks the side pressing plate upwards, the pressing plate locking device locks the side pressing plate with the largest upward sliding distance, and the pressing plate locking device locks the side pressing plate with the largest upward sliding distance. According to the straightening mechanism, the locked side pressing plate downwards jacks and presses a bent solid shaft, other side pressing plates upwards slide relative to the straightening mechanism during jacking and pressing, the detection mechanism is structurally combined into the jacking and pressing mechanism above, and the positioning step of the straightening mechanism is omitted in the process.

Description

Technical Field

[0001] The invention relates to the technical field of transmission shaft real shaft straightening, in particular to a straightening machine used for real shaft production. Background Art

[0002] In the field of solid shaft production, the straightness of the solid shaft plays a key role in its performance and quality. The bending or deformation of the solid shaft will cause vibration, noise and other problems during the transmission process, thus affecting the working efficiency and service life of the transmission shaft.

[0003] Traditional real shaft straightening technology has many defects. Manual operation is inefficient and the accuracy is difficult to guarantee. In addition, the existing straightening equipment is not flexible enough when facing real shafts of different specifications and cannot meet the diverse production needs. Moreover, during the real shaft straightening process, there is a lack of comprehensive monitoring of the overall state of the real shaft, making it difficult to achieve accurate straightening.

[0004] Patent publication number CN110508641A, a transmission shaft straightening machine with buffering and micro-tightening, and patent publication number CN110538895A, a transmission shaft straightening machine both have the following defects: during straightening, it is necessary to first detect the bending curvature of the transmission shaft in different areas during rotation through the detection mechanism below, and then drive the upper pressure head to slide to the specified position for extrusion straightening according to the bending curvature. First, the sliding pressure head and multiple detection mechanisms lead to high structural complexity of the device. Secondly, the method of first detecting, then sliding and finally straightening also leads to low straightening efficiency. Summary of the invention

[0005] 1. Technical issues to be resolved In view of the shortcomings of the prior art, the present invention provides a straightening machine for solid shaft production, which has the advantages of simplifying the structural complexity of the straightening machine, reducing equipment costs and improving straightening efficiency, solving the problems of high device structure complexity, high equipment cost and low straightening efficiency in the prior art.

[0006] (II) Technical solution To achieve the above object, the present invention provides the following technical solutions: A straightening machine for real shaft production, comprising a workbench, two symmetrical clamping mechanisms are slidably connected to the workbench, a straightening mechanism is arranged above the workbench, a plurality of side pressure plates are slidably connected to the bottom of the straightening mechanism, each side pressure plate is slidably connected to the bottom of the straightening mechanism, and a sliding distance detection device is arranged at the position of the side pressure plate of the straightening mechanism for detecting the upward sliding distance of the side pressure plate; A pressure plate locking device is also provided in the straightening mechanism, and the pressure plate locking device is used to lock the side pressure plate with the largest upward sliding distance, and the other side pressure plate slides freely in the straightening mechanism. During straightening, the real shaft is clamped by the clamping mechanism and driven to rotate. During the rotation of the real shaft, the bent part pushes the side pressure plate upward, and the pressure plate locking device locks the side pressure plate with the largest upward sliding distance. After locking, the straightening mechanism starts to press downward, and the locked side pressure plate presses the bent real shaft downward with the straightening mechanism to straighten it. The other side pressure plates slide upward relative to the straightening mechanism during the pressing. Structurally, the detection mechanism below is combined with the pressing mechanism above to form a straightening mechanism, and the sliding structure originally required for the pressing mechanism is removed. In terms of process, the positioning step of the straightening mechanism is saved.

[0007] Preferably, the straightening mechanism comprises: A push rod, one end of which is connected to the pressure cylinder and the other end of which is provided with a lifting seat, the bottom of which is fixedly connected to a bottom shell; The seesaw, the middle position of the seesaw is rotatably connected in the bottom shell, the left and right sides of the seesaw are provided with trapezoidal holes, the trapezoidal holes gradually widen in the direction away from the seesaw rotation axis, the seesaw is sleeved with a sleeve plate in a sliding connection at the position of the trapezoidal hole, and each sleeve plate is provided with a sleeve plate hole at the position corresponding to the trapezoidal hole; Two side pressure plates, the top of the bottom shell is slidably connected to two symmetrical side pressure plates on the left and right, when the seesaw is in a horizontal state, the top of each side pressure plate is provided with a top pressure side edge whose width exceeds the edge of the trapezoidal hole, and the bottom is provided with a contact block in contact with the real axis, and the edge of the sleeve hole is provided with a positioning groove at the position corresponding to the top pressure side edge; The pressure plate locking device is a locking structure composed of a rocker and a side pressure plate. During straightening, the side pressure plate corresponding to the part with the largest bending arc on the real axis slides the farthest upward, so that the top pressure side is stuck in the positioning groove while driving the sleeve plate to slide outward and driving the rocker to rotate. Since the outer width of the trapezoidal hole is large, the top of the other side pressure plate passes through the trapezoidal hole after the rocker rotates, thereby locking the side pressure plate with the longest sliding distance without restricting the sliding of the other side pressure plate.

[0008] Preferably, a receiving groove is provided in the lifting seat at a position corresponding to the side pressure plate, the upwardly rotating rocker contacts the bottom of the lifting seat to limit the rotation of the rocker, and the side pressure plate that is not locked slides upward and is inserted into the receiving groove.

[0009] Preferably, the middle rotating shaft part of the seesaw is provided with a front-to-rear symmetrical rotating shaft, the bottom shell is provided with a sliding groove at the position corresponding to the rotating shaft, a top block is provided in the sliding groove for vertical sliding connection, the bottom of the top block is attached to the top surface of the rotating shaft, the top is connected to one end of a spring No. 1, and the other end of the spring No. 1 is fixed on the inner wall of the sliding groove, when the two side pressure plates rise synchronously and press on the seesaw at the same time, the seesaw can slide upward relative to the straightening mechanism as a whole.

[0010] Preferably, a middle pressure plate is further arranged at the middle position of the two side pressure plates at the bottom of the straightening mechanism, the middle pressure plate is slidably connected to the bottom of the straightening mechanism up and down, a middle hole is arranged at a position above the middle pressure plate on the seesaw, top pressure side grooves are arranged at the front and rear sides of the middle pressure plate, and trapezoidal blocks are arranged at the front and rear sides of the middle hole; When the seesaw is in a horizontal state, the horizontal widths of the left and right sides of the trapezoidal block are greater than the width of the top pressure side groove. When the middle pressure plate rises, the left and right side walls of the top pressure side groove press against the bottom of the trapezoidal block, thereby limiting the rise of the middle pressure plate. When the seesaw is in an inclined state, the horizontal widths of the left and right sides of the trapezoidal block are smaller than the width of the top pressure side groove. When the middle pressure plate rises, the trapezoidal block slides up and down in the top pressure side groove in an inclined state, so that the middle pressure plate can slide freely.

[0011] Preferably, the top height of one of the left and right side walls of the top-pressing side groove is slightly lower than the top height of the other side wall. When the seesaw is in a horizontal state, the tops of the two side walls of the top-pressing side groove simultaneously press against the bottom of the trapezoidal block, causing the seesaw to tilt slightly. At this time, the inclination angle of the seesaw is not enough to clamp the trapezoidal block into the top-pressing side groove, but is sufficient to allow the top-pressing side edge to pass upward through the trapezoidal hole, so that after the middle pressure plate presses upward against the bottom of the seesaw, the side pressure plates on both sides can slide upward freely.

[0012] Preferably, the cross-section of the trapezoidal block is an isosceles trapezoid, and when the seesaw is in an inclined state, a side plate of the trapezoidal block located at a lower position is in a vertical state.

[0013] Preferably, a lifting touch plate is provided at the middle position in the front-to-back direction of the bottom of the contact block, a spring is provided above the lifting touch plate and between the contact block body, a support rod is also fixed on the top of the lifting touch plate, and the upper half of the support rod slides in the side pressure plate.

[0014] Preferably, the middle and bottom structures of the middle pressure plate are the same as those of the side pressure plate, the middle of the middle pressure plate is provided with a structure identical to the limit block, the bottom of the middle pressure plate is provided with a structure identical to the contact block, and the bottom of the middle pressure plate is also provided with a structure identical to the lifting touch plate; Pressure sensors are provided on the top of the side wall of the top pressure side groove and the top of the top pressure side edge. An electromagnet is provided on the top of the channel for the support rod to slide in the side pressure plate or the middle pressure plate. A magnet that repels the electromagnet is provided on the top of the support rod. When the pressure sensor on the top pressure side groove or the top pressure side edge detects pressure, the electromagnet is turned off, so that the side pressure plate or the middle pressure plate can slide freely up and down, and the lifting touch plate will not slide upward, so that the detection of the bending curvature of the real shaft is more accurate in the detection stage. When the top pressure side groove or the top pressure side edge is subjected to downward pressure in the straightening stage, the lifting touch plate can slide upward, so that the contact block fits the surface of the real shaft more closely when squeezing the real shaft.

[0015] Preferably, the pressure plate locking device locks the side pressure plate through an electric push column, and a plurality of electrically controlled sliding push columns are arranged on the side of the side pressure plate in the straightening mechanism. Perforations are arranged on the side pressure plate at positions corresponding to the push columns. After the sliding distance detection device detects the sliding distance of each side pressure plate, the side pressure plate is reset first and then the electric push column is controlled to be inserted into the perforation of the side pressure plate with the longest sliding distance, thereby completing the locking of the side pressure plate.

[0016] (III) Beneficial effects Compared with the prior art, the present invention provides a straightening machine for real shaft production, which has the following beneficial effects: 1. The straightening machine for solid shaft production has two symmetrical side pressure plates arranged at the bottom of the straightening mechanism, and then a sliding distance detection device and a pressure plate locking device are arranged at positions corresponding to the side pressure plates in the straightening mechanism. During straightening, the real shaft is clamped by the clamping mechanism and driven to rotate. During the rotation of the real shaft, the bent part pushes the side pressure plate upward, and the pressure plate locking device locks the side pressure plate with the largest upward sliding distance. After locking, the straightening mechanism starts to press downward, and the locked side pressure plate presses the bent real shaft downward with the straightening mechanism to straighten it, and the other side pressure plates slide upward relative to the straightening mechanism during the pressing. Structurally, the detection mechanism below is combined with the pressing mechanism above to form a straightening mechanism, and the sliding structure originally required for the pressing mechanism is removed. In terms of process, the positioning step of the straightening mechanism is saved.

[0017] 2. The straightening machine for solid shaft production adds a middle pressure plate in the middle of the bottom of the straightening mechanism, arranges top pressure side grooves on the middle pressure plate, arranges a middle hole and a trapezoidal block at the position of the rocker corresponding to the middle pressure plate, thereby setting a linkage between the middle pressure plate and the side pressure plates, so that whichever of the two side pressure plates and one middle pressure plate slides up the farthest can be locked, and the other two can slide up freely, thereby increasing the number of pressure plates and improving the straightening accuracy.

[0018] 3. The straightening machine for real shaft production has a lifting touch plate at the bottom of the contact block, pressure sensors are provided on the top of the side wall of the top pressure side groove and the top of the top pressure side edge, an electromagnet is provided on the top of the channel for the support rod to slide in the side pressure plate, and a magnet that repels the electromagnet is provided on the top of the support rod. When the pressure sensor on the top pressure side groove or the top pressure side edge detects pressure, the electromagnet is turned off, so that the side pressure plate or the middle pressure plate can slide freely up and down so that the lifting touch plate will not slide upward, and the detection of the bending curvature of the real shaft in the detection stage is more accurate. When the top pressure side groove or the top pressure side edge is subjected to downward pressure in the straightening stage, the lifting touch plate can slide upward, so that the contact block fits the surface of the real shaft more closely when the real shaft is squeezed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of embodiment 1 of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the clamping mechanism of the first embodiment of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the straightening mechanism of the first embodiment of the present invention.

[0022] Figure 4 It is an exploded view of the straightening mechanism of the first embodiment of the present invention.

[0023] Figure 5 It is an exploded view of the straightening mechanism of the first embodiment of the present invention.

[0024] Figure 6 Schematic diagram of the structure of a bottom shell according to an embodiment of the present invention.

[0025] Figure 7 Schematic diagram of the structure of a seesaw according to an embodiment of the present invention.

[0026] Figure 8 It is a structural schematic diagram of a pressure plate on one side of an embodiment of the present invention.

[0027] Fig. 9 The figure is a schematic diagram of the structure of a set of plates according to an embodiment of the present invention.

[0028] Fig.10 It is a schematic structural diagram of a first embodiment of the present invention in which a pressing side edge is pressed against a positioning groove to tilt the seesaw.

[0029] Fig.11 It is a structural schematic diagram of the straightening mechanism of the second embodiment of the present invention.

[0030] Fig.12 It is a schematic structural diagram of the seesaw, side pressure plates and middle pressure plate of the second embodiment of the present invention.

[0031] Fig.13 It is a schematic diagram of the structure of the pressure plate in the second embodiment of the present invention.

[0032] Fig.14 It is a schematic diagram of the structure of the hole and the trapezoidal block in the second embodiment of the present invention.

[0033] Fig.15 It is a structural schematic diagram of a lifting touch panel according to a second embodiment of the present invention.

[0034] In the figure: 1. workbench; 2. clamping mechanism; 3. straightening mechanism; 4. real shaft; 11. slide rail; 12. screw rod; 13. No. 1 motor; 21. chuck; 22. No. 2 motor; 31. push rod; 32. lifting seat; 33. bottom shell; 34. side pressure plate; 35. rocker; 36. middle pressure plate; 321. receiving groove; 331. sliding groove; 332. top block; 333. No. 1 spring; 351. trapezoidal hole; 352. sleeve plate; 353. rotating shaft; 354. middle hole; 355. trapezoidal block; 341. top pressure side; 342. limit block; 343. contact block; 301. lifting touch plate; 3521. sleeve plate hole; 3522. positioning groove; 361. top pressure side groove. DETAILED DESCRIPTION

[0035] 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.

[0036] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0037] In addition, a fixed connection refers to a connection in which there is no relative movement after the parts or components are fixed; a transmission connection refers to a connection method in which mechanical motion or torque is transmitted to other working parts through a transmission part; a sliding connection refers to a connection method in which two objects are in contact but not fixed and can slide relative to each other; a rotating connection refers to a connection method in which two objects are in contact but not fixed and can rotate relative to each other.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] Embodiment 1: This embodiment provides a straightening machine for real shaft production, which has the following technical features.

[0040] See also Figure 1 - Fig.10 A straightening machine for solid shaft production includes a workbench 1, on which two symmetrical clamping mechanisms 2 are slidably connected, a straightening mechanism 3 is arranged above the workbench 1, a plurality of side pressure plates 34 are slidably connected at the bottom of the straightening mechanism 3, each side pressure plate 34 is slidably connected to the bottom of the straightening mechanism 3, and a sliding distance detection device is arranged at the position of the side pressure plate 34 of the straightening mechanism 3, which is used to detect the upward sliding distance of the side pressure plate 34; a pressure plate locking device is also arranged in the straightening mechanism 3, and the pressure plate locking device is used to lock the side pressure plate 34 with the largest upward sliding distance, and the other side pressure plate 34 slides freely in the straightening mechanism 3, and the straightening mechanism 3 is provided with a pressure plate locking device. When the straightening mechanism 3 is locked, the locked side pressure plates 34 are pressed downward to straighten the bent real shaft 4 as the straightening mechanism 3 moves downward, and the other side pressure plates 34 slide upward relative to the straightening mechanism 3 during the pressing. Structurally, the detection mechanism below is combined with the pressing mechanism above to form the straightening mechanism 3, and the sliding structure originally required for the pressing mechanism is removed. In terms of process, the positioning step of the straightening mechanism 3 is saved.

[0041] The straightening mechanism 3 is further provided with: a push rod 31, one end of which is connected to the pressure cylinder and the other end is provided with a lifting seat 32, and the bottom of the lifting seat 32 is fixedly connected to the bottom of the bottom shell 33; a seesaw 35, the middle position of the seesaw 35 is rotatably connected to the bottom shell 33, and the left and right sides of the seesaw 35 are provided with trapezoidal holes 351, and the trapezoidal holes 351 gradually widen in the direction away from the rotation axis of the seesaw 35, and the seesaw 35 is sleeved with a slidingly connected sleeve plate 352 at the position of the trapezoidal hole 351, and each sleeve plate 352 is provided with a sleeve plate hole 3521 at the position corresponding to the trapezoidal hole 351; two side pressure plates 34, the top of the bottom shell 33 is slidably connected with two left and right symmetrical side pressure plates 34, and when the seesaw 35 is in a horizontal state, the top of each side pressure plate 34 is provided with a width that is larger than the trapezoidal hole 351 The top pressing side edge 341 of the edge and the contact block 343 that contacts the real shaft 4 are arranged at the bottom, and the edge of the sleeve hole 3521 is provided with a positioning groove 3522 at the position corresponding to the top pressing side edge 341; the pressure plate locking device is a locking structure composed of a rocker 35 and a side pressure plate 34. During straightening, the side pressure plate 34 corresponding to the part with the largest bending arc on the real shaft 4 slides upward the farthest distance, so that the top pressing side edge 341 is stuck in the positioning groove 3522 while driving the sleeve plate 352 to slide outward and driving the rocker 35 to rotate. Since the outer width of the trapezoidal hole 351 is large, after the rocker 35 rotates, the top of the other side pressure plate 34 passes through the trapezoidal hole 351, thereby locking the side pressure plate 34 with the longest sliding distance without restricting the sliding of the other side pressure plate 34.

[0042] Furthermore, a receiving groove 321 is provided in the lifting seat 32 at a position corresponding to the side pressure plate 34, and the upwardly rotating rocker 35 contacts the bottom of the lifting seat 32 to limit the rotation of the rocker 35, and the side pressure plate 34 that is not locked slides upward and is inserted into the receiving groove 321.

[0043] It is further provided that the middle rotating shaft portion of the seesaw 35 is provided with a rotating shaft 353 which is symmetrical front to back, and the bottom shell 33 is provided with a sliding groove 331 at a position corresponding to the rotating shaft 353, and a top block 332 which is slidably connected up and down is provided in the sliding groove 331, the bottom of the top block 332 is attached to the top surface of the rotating shaft 353, and the top is connected to one end of a spring 333, and the other end of the spring 333 is fixed on the inner wall of the sliding groove 331, and when the two side pressure plates 34 rise synchronously and thus press on the seesaw 35 at the same time, the seesaw 35 can slide upward relative to the straightening mechanism 3 as a whole.

[0044] It is further provided that a pressure cylinder fixedly arranged on a frame is provided above the workbench 1, and the top end of the push rod 31 is slidably connected in the pressure cylinder.

[0045] It is further provided that the lifting seat 32 and the bottom shell 33 are fixedly connected in a manner of an integrated structure, welding or bolt fixing.

[0046] It is further provided that a limit block 342 is provided at the middle position of the limit block 342 for limiting the distance that the limit block 342 slides up and down in the straightening mechanism 3 .

[0047] It is further provided that a protrusion is provided on the portion of the sleeve 352 that contacts the seesaw 35, and a sliding groove is provided on the seesaw 35 on the sliding path corresponding to the protrusion. The protrusion slides in the sliding groove, and a limit block is provided in the sliding groove for limiting the sliding distance and range of the sleeve 352. A return spring is also provided between the sleeve 352 and the seesaw 35 for applying a force to the sleeve 352 toward the side of the rotation axis of the seesaw 35.

[0048] It is further provided that two slide rails 11 are respectively provided on the left and right sides of the workbench 1, and the bottom of each clamping mechanism 2 is slidably connected to the corresponding slide rail 11, and a screw rod 12 is provided in each slide rail 11, and an external thread is provided on the screw rod 12, and the slide rail 11 passes through the base of the clamping mechanism 2, and an internal thread meshing with the screw rod 12 is provided in the hole corresponding to the screw rod 12 on the base of the clamping mechanism 2, and the end of the screw rod 12 is connected to the output shaft of the No. 1 motor 13, and the screw rod 12 is driven to rotate by the No. 1 motor 13, thereby driving the clamping mechanism 2 to slide on the slide rail 11; a chuck 21 and a No. 2 motor 22 are provided on each clamping mechanism 2, and the chuck 21 is used to clamp the end of the real shaft 4 symmetrically with the center, and the output shaft of the No. 2 motor 22 is transmission-connected to the chuck 21, and the No. 2 motor 22 drives the chuck 21 to rotate, and the transmission connection mode between the No. 2 motor 22 and the chuck 21 is any one of gear meshing transmission, pulley belt transmission and sprocket chain transmission.

[0049] It is further provided that the sliding distance detection device is any one of a grating ruler, a laser displacement sensor and a pressure sensor: the grating ruler is based on the optical moiré fringe principle, and is composed of a scale grating and an indicator grating, the scale grating is fixed on the straightening mechanism 3, and the indicator grating is connected to the sliding side pressure plate 34, when the side pressure plate 34 slides, the indicator grating moves relative to the scale grating, and generates light and dark moiré fringes, and the movement amount of the moiré fringes is detected by a photoelectric detector, and the subdivision technology can be used to convert the change of the fringes into an accurate displacement signal, thereby obtaining the sliding distance of the plate; the laser displacement sensor emits a laser beam vertically to the side pressure plate 34, and then receives the laser reflected from the surface of the side pressure plate 34, and ... When the pressure plate 34 slides, parameters such as the position or time of the reflected light will change, and the displacement of the plate will be calculated based on the triangulation principle or the flight time principle. The triangulation principle is to calculate the distance change by detecting the change in the position of the reflected light on the detector, and the flight time principle is to calculate the distance by measuring the time difference between laser emission and reception; the pressure sensor is a spring vertically arranged between the side pressure plate 34 and the straightening mechanism 3, one end of the spring is connected to the side pressure plate 34, and the other end is connected to the pressure sensor arranged on the straightening mechanism 3. During the up and down sliding process of the side pressure plate 34, the extrusion state of the spring changes, and the pressure generated by the spring is detected by the pressure sensor to determine the sliding distance of the side pressure plate 34.

[0050] Embodiment 2: This embodiment provides a straightening machine for real shaft production, which, in addition to the technical features of the first embodiment, also has the following technical features.

[0051] See also Fig.11 - Fig.15 , a middle pressure plate 36 is also provided at the middle position of the two side pressure plates 34 at the bottom of the straightening mechanism 3, and the middle pressure plate 36 is slidably connected to the bottom of the straightening mechanism 3 up and down, and a middle hole 354 is provided on the seesaw 35 at a position corresponding to the upper part of the middle pressure plate 36, and top pressure side grooves 361 are provided on the front and rear sides of the middle pressure plate 36, and trapezoidal blocks 355 are provided on the front and rear sides of the middle hole 354; when the seesaw 35 is in a horizontal state, the horizontal width of the left and right sides of the trapezoidal blocks 355 is greater than the width of the top pressure side grooves 361, and when the middle pressure plate 36 rises, the left and right side walls of the top pressure side grooves 361 press against the bottom of the trapezoidal blocks 355, thereby limiting the rise of the middle pressure plate 36; when the seesaw 35 is in an inclined state, the horizontal width of the left and right sides of the trapezoidal blocks 355 is less than the width of the top pressure side grooves 361, and when the middle pressure plate 36 rises, the trapezoidal blocks 355 are stuck in the top pressure side grooves 361 in an inclined state and slide up and down, thereby allowing the middle pressure plate 36 to slide freely.

[0052] It is further configured that the top height of one of the left and right side walls of the top-pressing side groove 361 is slightly lower than the top height of the other side wall. When the rocker 35 is in a horizontal state, the tops of the two side walls of the top-pressing side groove 361 simultaneously press against the bottom of the trapezoidal block 355, causing the rocker 35 to tilt slightly. At this time, the inclination angle of the rocker 35 is not enough to clamp the trapezoidal block 355 into the top-pressing side groove 361, but is enough to allow the top-pressing side edge 341 to pass upward through the trapezoidal hole 351, so that after the middle pressure plate 36 presses upward against the bottom of the rocker 35, the side pressure plates 34 on both sides can slide upward freely.

[0053] It is further provided that the cross section of the trapezoidal block 355 is an isosceles trapezoid, and when the seesaw 35 is in an inclined state, a side plate of the trapezoidal block 355 located at a lower position is in a vertical state.

[0054] Furthermore, a lifting touch plate 301 is provided at the middle position in the front-to-back direction of the bottom of the contact block 343, a spring is provided above the lifting touch plate 301 and between the main body of the contact block 343, a support rod is also fixed on the top of the lifting touch plate 301, and the upper half of the support rod slides in the side pressure plate 34.

[0055] It is further provided that the structure in the middle and bottom of the middle pressure plate 36 is the same as that of the side pressure plate 34, the middle of the middle pressure plate 36 is provided with a structure identical to the limit block 342, the bottom of the middle pressure plate 36 is provided with a structure identical to the contact block 343, and the bottom of the middle pressure plate 36 is also provided with a structure identical to the lifting touch plate 301; pressure sensors are provided at the top of the side wall of the top pressure side groove 361 and at the top of the top pressure side edge 341, an electromagnet is provided at the top of the channel for sliding the support rod in the side pressure plate 34 or the middle pressure plate 36, and a support rod is provided at the top There is a magnet that repels the electromagnet. When the pressure sensor on the top pressure side groove 361 or the top pressure side edge 341 detects pressure, the electromagnet is turned off, so that the side pressure plate 34 or the middle pressure plate 36 can slide freely up and down so that the lifting touch plate 301 will not slide upward, thereby making the detection of the bending curvature of the real shaft 4 more accurate during the detection stage. During the straightening stage, when the top pressure side groove 361 or the top pressure side edge 341 is subjected to downward pressure, the lifting touch plate 301 can slide upward, so that when the real shaft 4 is squeezed, the contact block 343 fits the surface of the real shaft 4 more closely.

[0056] Embodiment three: This embodiment provides a straightening machine for real shaft production, which has the following technical features.

[0057] A straightening machine for real shaft production, comprising a workbench 1, two symmetrical clamping mechanisms 2 are slidably connected to the workbench 1, a straightening mechanism 3 is arranged above the workbench 1, a plurality of side pressure plates 34 are slidably connected to the bottom of the straightening mechanism 3, each side pressure plate 34 is slidably connected to the bottom of the straightening mechanism 3, and a sliding distance detection device is arranged at the position of the side pressure plate 34 of the straightening mechanism 3, which is used to detect the upward sliding distance of the side pressure plate 34; A pressure plate locking device is also provided in the straightening mechanism 3 , and is used to lock the side pressure plate 34 with the largest upward sliding distance, while the other side pressure plate 34 slides freely in the straightening mechanism 3 .

[0058] It is further provided that the pressure plate locking device locks the side pressure plate 34 by means of an electric push column, a plurality of electrically controlled sliding push columns are arranged on the side of the side pressure plate 34 in the straightening mechanism 3, and through holes are arranged on the side pressure plate 34 at positions corresponding to the push columns. After the sliding distance detection device detects the sliding distance of each side pressure plate 34, the side pressure plate 34 is first reset and then the electric push column is controlled to be inserted into the through hole of the side pressure plate 34 with the longest sliding distance, thereby completing the locking of the side pressure plate 34.

[0059] In summary, the straightening machine for solid shaft production arranges two symmetrical side pressure plates 34 at the bottom of the straightening mechanism 3, and then arranges a sliding distance detection device and a pressure plate locking device at the position corresponding to the side pressure plates 34 in the straightening mechanism 3. During straightening, the real shaft 4 is clamped by the clamping mechanism 2 and driven to rotate. During the rotation of the real shaft 4, the bent part pushes the side pressure plate 34 upward, and the pressure plate locking device locks the side pressure plate 34 with the largest upward sliding distance. After locking, the straightening mechanism 3 begins to press downward, and the locked side pressure plate 34 presses the bent real shaft 4 downward with the straightening mechanism 3 to straighten it, and the other side pressure plates 34 slide upward relative to the straightening mechanism 3 during the pressing. Structurally, the detection mechanism below is combined with the pressing mechanism above to form the straightening mechanism 3, and the sliding structure originally required for the pressing mechanism is removed. In terms of process, the positioning step of the straightening mechanism 3 is saved.

[0060] The straightening machine for solid shaft production has a middle pressure plate 36 added to the middle of the bottom of the straightening mechanism 3, a top pressure side groove 361 is provided on the middle pressure plate 36, and a middle hole 354 and a trapezoidal block 355 are provided at the position of the rocker 35 corresponding to the middle pressure plate 36, thereby providing a linkage between the middle pressure plate 36 and the side pressure plates 34, so that whichever of the two side pressure plates 34 and the middle pressure plate 36 slides up the farthest can be locked, and the other two can slide up freely, thereby increasing the number of pressure plates and improving the straightening accuracy.

[0061] The straightening machine for real shaft production is provided with a lifting touch plate 301 at the bottom of the contact block 343, pressure sensors are provided at the top of the side wall of the top-pressing side groove 361 and the top of the top-pressing side edge 341, an electromagnet is provided at the top of the channel for sliding the support rod in the side pressure plate 34, and a magnet that repels the electromagnet is provided at the top of the support rod. When the pressure sensor on the top-pressing side groove 361 or the top-pressing side edge 341 detects pressure, the electromagnet is turned off, so that the side pressure plate 34 or the middle pressure plate 36 can slide freely up and down so that the lifting touch plate 301 will not slide upward, so that the detection of the bending curvature of the real shaft 4 is more accurate in the detection stage, and the lifting touch plate 301 can slide upward when the top-pressing side groove 361 or the top-pressing side edge 341 is subjected to downward pressure in the straightening stage, so that the contact block 343 fits the surface of the real shaft 4 more closely when squeezing the real shaft 4.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A straightening machine for real shaft production, comprising a workbench (1), two symmetrical clamping mechanisms (2) being slidably connected to the workbench (1), a straightening mechanism (3) being arranged above the workbench (1), characterized in that: The straightening mechanism (3) is slidably connected to a plurality of side pressure plates (34) at the bottom thereof, each side pressure plate (34) being slidably connected to the bottom of the straightening mechanism (3) up and down, and the straightening mechanism (3) is provided with a sliding distance detection device at the position of the side pressure plate (34) for detecting the upward sliding distance of the side pressure plate (34); A pressure plate locking device is also provided in the straightening mechanism (3), and the pressure plate locking device is used to lock a side pressure plate (34) with the largest upward sliding distance, while the other side pressure plate (34) slides freely in the straightening mechanism (3).

2. A straightening machine for real shaft production according to claim 1, characterized in that: The straightening mechanism (3) comprises: A push rod (31), one end of the push rod (31) is connected to the pressure cylinder, and the other end is provided with a lifting seat (32), and the bottom of the lifting seat (32) is fixedly connected to a bottom shell (33); A seesaw (35), wherein the middle position of the seesaw (35) is rotatably connected in the bottom shell (33), the seesaw (35) is provided with trapezoidal holes (351) on the left and right sides, the trapezoidal holes (351) gradually widen in a direction away from the rotation axis of the seesaw (35), the seesaw (35) is sleeved with a sleeve plate (352) in a slidable connection at the position of the trapezoidal hole (351), and each sleeve plate (352) is provided with a sleeve plate hole (3521) at a position corresponding to the trapezoidal hole (351); Two side pressure plates (34), the top of the bottom shell (33) is slidably connected to the left and right symmetrical side pressure plates (34), when the seesaw (35) is in a horizontal state, the top of each side pressure plate (34) is provided with a top pressure side edge (341) whose width exceeds the edge of the trapezoidal hole (351), and the bottom is provided with a contact block (343) in contact with the real axis (4), and the edge of the sleeve hole (3521) is provided with a positioning groove (3522) at a position corresponding to the top pressure side edge (341); The pressure plate locking device is a locking structure composed of a seesaw (35) and a side pressure plate (34). When straightening, the side pressure plate (34) corresponding to the part of the real shaft (4) with the largest curvature slides the farthest upward, so that the top pressure side edge (341) is stuck in the positioning groove (3522) and drives the sleeve plate (352) to slide outward and drives the seesaw (35) to rotate. Since the outer width of the trapezoidal hole (351) is large, after the seesaw (35) rotates, the top of the other side pressure plate (34) passes through the trapezoidal hole (351).

3. A straightening machine for real shaft production according to claim 2, characterized in that: A receiving groove (321) is provided in the lifting seat (32) at a position corresponding to the side pressure plate (34); the upwardly rotating seesaw (35) contacts the bottom of the lifting seat (32) to limit the rotation of the seesaw (35); and the side pressure plate (34) that is not locked slides upward and is inserted into the receiving groove (321).

4. A straightening machine for real shaft production according to claim 3, characterized in that: The middle rotating shaft portion of the seesaw (35) is provided with a rotating shaft (353) that is symmetrical in front and back, and the bottom shell (33) is provided with a sliding groove (331) at a position corresponding to the rotating shaft (353), and a top block (332) that is slidably connected up and down is provided in the sliding groove (331), the bottom of the top block (332) is attached to the top surface of the rotating shaft (353), and the top is connected to one end of a No. 1 spring (333), and the other end of the No. 1 spring (333) is fixed to the inner wall of the sliding groove (331).

5. A straightening machine for real shaft production according to claim 4, characterized in that: A middle pressure plate (36) is also provided at the bottom of the straightening mechanism (3) in the middle of the two side pressure plates (34); the middle pressure plate (36) is slidably connected to the bottom of the straightening mechanism (3) in an up-and-down manner; a middle hole (354) is provided on the seesaw (35) at a position above the middle pressure plate (36); top pressure side grooves (361) are provided on the front and rear sides of the middle pressure plate (36); and trapezoidal blocks (355) are provided on the front and rear sides of the middle hole (354); When the seesaw (35) is in a horizontal state, the horizontal widths of the left and right sides of the trapezoidal block (355) are greater than the width of the top-pressing side groove (361), and when the middle pressure plate (36) rises, the left and right side walls of the top-pressing side groove (361) press against the bottom of the trapezoidal block (355), thereby limiting the rise of the middle pressure plate (36); When the seesaw (35) is in an inclined state, the horizontal widths of the left and right sides of the trapezoidal block (355) are smaller than the width of the top pressure side groove (361), and when the middle pressure plate (36) rises, the trapezoidal block (355) is stuck in the top pressure side groove (361) in an inclined state and slides up and down, thereby allowing the middle pressure plate (36) to slide freely.

6. A straightening machine for real shaft production according to claim 5, characterized in that: The top height of one of the left and right side walls of the pressing side groove (361) is slightly lower than the top height of the other side wall. When the seesaw (35) is in a horizontal state, the tops of the two side walls of the pressing side groove (361) simultaneously press against the bottom of the trapezoidal block (355), causing the seesaw (35) to tilt slightly.

7. A straightening machine for real shaft production according to claim 6, characterized in that: The cross section of the trapezoidal block (355) is an isosceles trapezoid, and when the seesaw (35) is in an inclined state, a side plate of the trapezoidal block (355) located at a lower position is in a vertical state.

8. A straightening machine for real shaft production according to claim 5, characterized in that: A lifting touch plate (301) is arranged at the middle position of the bottom of the contact block (343) in the front-to-back direction, a spring is arranged above the lifting touch plate (301) and between the main body of the contact block (343), and a support rod is also fixed on the top of the lifting touch plate (301), and the upper half of the support rod slides in the side pressure plate (34).

9. A straightening machine for real shaft production according to claim 8, characterized in that: The structure of the middle and bottom of the middle pressure plate (36) is the same as that of the side pressure plate (34); a structure identical to the limit block (342) is arranged in the middle of the middle pressure plate (36); a structure identical to the contact block (343) is arranged at the bottom of the middle pressure plate (36); and a structure identical to the lifting touch plate (301) is also arranged at the bottom of the middle pressure plate (36); Pressure sensors are provided at the top of the side wall of the top pressure side groove (361) and at the top of the top pressure side edge (341); an electromagnet is provided at the top of the channel for the support rod to slide in the side pressure plate (34) or the middle pressure plate (36); a magnet that repels the electromagnet is provided at the top of the support rod; and the electromagnet is turned off when the pressure sensor on the top pressure side groove (361) or the top pressure side edge (341) detects pressure.

10. A straightening machine for real shaft production according to claim 1, characterized in that: The pressure plate locking device locks the side pressure plate (34) via an electric push column, and a plurality of electrically controlled sliding push columns are arranged on the side of the side pressure plate (34) in the straightening mechanism (3), and through holes are arranged on the side pressure plate (34) at positions corresponding to the push columns.

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