Straightening equipment for long straight part

Abstract

The straightening equipment comprises a base, a first supporting piece, a second supporting piece and a straightening device, the base is of a long and straight structure, the first supporting piece and the second supporting piece are arranged on the top face of the base and arranged in the length direction of the base, and the first supporting piece and the second supporting piece are used for jointly supporting the long and straight piece to be straightened; the straightening device is arranged on the base in a striding mode and can move in the length direction of the base, and the straightening device is used for abutting and straightening the part, located between the first supporting piece and the second supporting piece, of the long and straight piece to be straightened. The straightening equipment is an efficient and convenient manual straightening tool, can be applied to straightening of most long straight parts such as lead screws, polished rods and transmission shafts, has the advantages of being convenient to move and simple in structure, can correct main deformation parts of the whole shaft, can guarantee that the straightening precision is within 0.1 mm under the condition that the straightening equipment is matched with a measuring instrument, and is suitable for large-scale production. And the use requirement of straightening the long straight part is met.

Description

Technical Field

[0001] The present application relates to the technical field of straightening devices, and in particular to a straightening device for a long straight piece. Background Art

[0002] Screws and drive shafts are devices that convert rotary motion into linear motion, or convert linear motion into rotary motion. Among them, screws are commonly used transmission elements in tool machinery and precision machinery. Their main function is to convert rotary motion into linear motion, or torque into axial repetitive force, while having the characteristics of high precision, reversibility and high efficiency. Due to its small friction resistance, it is used in various industrial equipment and precision instruments.

[0003] As the capacity of paper machines continues to increase, the diameter of parent rolls continues to break through, and the load of ball screws continues to increase, the failure of the screws under heavy loads has gradually become prominent. The screws of the screws are constantly bending and deforming under high loads, and stress fractures occur frequently. Therefore, it is necessary to straighten and measure the screws regularly to ensure the parallelism and running stability of the screws. However, during the use cycle, abnormal shutdowns due to deformation and bending of the screws under heavy loads also occur from time to time. Attempts to straighten them by swinging a sledgehammer or other methods will cause damage to the stress of the screws, which will affect the second use even after straightening. On the other hand, the lathe reprocessing method requires at least 2 days for rough turning and fine turning, which will result in a waste of material and labor costs.

[0004] Choosing to scrap and replace the screw rod with a new one will not meet the production and use requirements in terms of price and time. In addition, in papermaking equipment, many slender screw rods and slender shafts are also used in other parts. Due to the long length and small diameter, local deformation is prone to occur, and usually local deformation leads to failure to meet the use requirements. In order to reduce waste, it is urgent to solve the problem of deformation and straightening of screw rods and slender shafts. Utility Model Content

[0005] An embodiment of the present application provides a straightening device for a long straight piece, the straightening device comprising a base, a first support member, a second support member and a straightening device, the base being a long straight structure, the first support member and the second support member being arranged on the top surface of the base and arranged along the length direction of the base, the first support member and the second support member being used to jointly support the long straight piece to be straightened, the straightening device being straddled on the base and movable along the length direction of the base, the straightening device being used to press against and straighten the portion of the long straight piece to be straightened located between the first support member and the second support member.

[0006] In some embodiments, the straightening device includes a bracket and a straightening piece, the bracket is straddled on the base, the bracket is provided with a mounting hole, the straightening piece is connected to the bracket through the mounting hole, and the straightening piece is used to resist the long straight piece to be straightened.

[0007] In some embodiments, the bracket is an n-type structure, including a first vertical arm, a horizontal arm and a second vertical arm connected in sequence, the first vertical arm and the second vertical arm are respectively located on both sides of the base, the horizontal arm is respectively connected to the top of the first vertical arm and the second vertical arm, and the horizontal arm is provided with the mounting hole.

[0008] In some embodiments, the straightening member includes a handwheel and a screw, one end of the screw is connected to the handwheel, the mounting hole is a threaded hole, the screw is inserted into the threaded hole and threadedly engaged with the threaded hole, and the other end of the screw is used to push against the long straight member to be straightened.

[0009] In some embodiments, the base includes a connecting plate and a supporting plate of an integral structure, the supporting plate is horizontally arranged, the connecting plate is arranged on the bottom surface of the supporting plate, and the first supporting member and the second supporting member are arranged on the top surface of the supporting plate.

[0010] In some embodiments, the base further includes a bottom plate, the bottom plate is arranged parallel to the support plate, and the connecting plate is arranged between the bottom plate and the support plate.

[0011] In some embodiments, the straightening device also includes a first pulley and a second pulley, the first pulley is arranged at the bottom end of the first vertical arm, the second pulley is arranged at the bottom end of the second vertical arm, and the first pulley and the second pulley slide along the top surface of the base plate respectively.

[0012] In some embodiments, the straightening device also includes a first guide block, which is arranged on the inner side of the first vertical arm. A first guide groove is provided on the side of the first guide block away from the first vertical arm. The first guide groove slides with the edge of the support plate to achieve sliding guide positioning of the straightening device.

[0013] In some embodiments, the straightening device also includes a second guide block, which is arranged on the inner side of the second vertical arm, and a second guide groove is provided on the side of the second guide block away from the second vertical arm, and the second guide groove is slidably matched with the edge of the support plate, and the second guide block and the first guide block are symmetrically arranged relative to the length direction of the support plate.

[0014] In some embodiments, a first V-shaped groove is disposed on the top of the first support member, and a second V-shaped groove is disposed on the top of the second support member. The first V-shaped groove and the second V-shaped groove are used together to support the long straight member to be straightened.

[0015] The straightening device for long straight parts provided in the embodiment of the present application is an efficient and convenient manual straightening tool, which can be used for the straightening of most long straight parts such as screw rods, polished rods, transmission shafts, etc. It has the characteristics of easy movement and simple structure. It can correct the main deformation parts of the entire shaft. In combination with measuring instruments, it can ensure that the straightening accuracy is within 0.1mm, which meets the use requirements of long straight parts straightening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a straightening device for a long straight piece of the present application;

[0018] Figure 2 yes Figure 1 A schematic structural diagram of the straightening device in the embodiment. DETAILED DESCRIPTION

[0019] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0020] The terms "first", "second", and "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", and "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "including" and "having" in the embodiments of the present application and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or components inherent to these processes, methods, products, or devices.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The failure of long straight parts such as screw rods and transmission shafts under heavy loads has gradually become prominent. The screw rods of the screw rods are constantly bending and deforming, stress fracture, etc. under high load conditions. Common straightening methods or the choice of scrapping and replacing new screw rods directly affect the production efficiency of the equipment. In response to the above problems, the embodiment of the present application provides a straightening device for long straight parts, which is used to straighten any long straight parts including screw rods, transmission shafts, and polished rods.

[0023] See also Figure 1 , Figure 1 It is a schematic diagram of the overall structure of an embodiment of a straightening device for a long straight piece of the present application. The straightening device 10 for a long straight piece in this embodiment includes but is not limited to the following structures: a first support member 100, a second support member 200, a base 300 and a straightening device 400.

[0024] Specifically, the base 300 in this embodiment is a long straight structure, and the length of the base 300 can be 2-6 meters (determined according to the length of the long straight piece to be straightened). The base 300 serves as the main frame of the entire equipment, and the parallelism and verticality of the base 300 need to be ensured, and the upper surface of the base 300 remains smooth and flat. The first support member 100 and the second support member 200 are arranged on the top surface of the base 300 and arranged along the length direction of the base 300. The first support member 100 and the second support member 200 are used to jointly support the long straight piece 20 to be straightened. Optionally, the top of the first support member 100 in this embodiment is provided with a first V-shaped groove 110, and the top of the second support member 200 is provided with a second V-shaped groove 210. The first V-shaped groove 110 and the second V-shaped groove 210 are used to jointly support the long straight piece 20 to be straightened.

[0025] Optionally, the straightening device 400 is arranged across the base 300 and can move along the length direction of the base 300 (the direction of arrow X in the figure). The straightening device 400 is used to abut and straighten the portion of the long straight member 20 to be straightened located between the first support member 100 and the second support member 200. When the straightening of the portion of the long straight member 20 located between the first support member 100 and the second support member 200 is completed, the abutment of the straightening device 400 on the long straight member 20 can be released, and then the long straight member 20 is moved along the direction of arrow X in the figure, and the unstraightened portion is moved between the first support member 100 and the second support member 200, and then the straightening device 400 is used to straighten the portion of the long straight member 20, and the above actions are repeated in sequence until the straightening of the entire long straight member 20 is completed.

[0026] Optionally, please also refer to Figure 2 , Figure 2 yes Figure 1 A schematic diagram of the structure of the straightening device in the embodiment, wherein the straightening device 400 in this embodiment includes a bracket 410 and a straightening member 420, the bracket 410 is arranged across the base 300, the bracket 410 is provided with a mounting hole 401, the straightening member 420 is connected to the bracket 410 through the mounting hole 401, and the straightening member 420 is used to resist the long straight member 20 to be straightened.

[0027] The bracket 410 in this embodiment is an n-type structure, including a first vertical arm 411, a horizontal arm 413 and a second vertical arm 412 connected in sequence, the first vertical arm 411 and the second vertical arm 412 are respectively located on both sides of the base 300, the horizontal arm 413 is respectively connected to the top of the first vertical arm 411 and the second vertical arm 412, and the horizontal arm 413 is provided with the mounting hole 401. Optionally, the bracket 410 in this embodiment is required to maintain verticality as much as possible, and is used to fix a measuring dial indicator (not shown in the figure) during measurement.

[0028] Optionally, the straightening member 420 in this embodiment includes a hand wheel 421 and a screw rod 422, one end of the screw rod 422 is connected to the hand wheel 421, the mounting hole 401 is a threaded hole, the screw rod 422 is inserted into the threaded hole and screwed with the threaded hole, and the other end of the screw rod 422 is used to push against the long straight member 20 to be straightened. The screw rod 422 has a self-locking function, and the hand wheel 421 can realize the downward and upward movement of the screw rod 422. Because the spiral structure of the screw rod 422 converts the rotational motion into the linear motion, a large torque suppression effect can be achieved by applying a small torque to the long straight member 20 to be straightened.

[0029] Optionally, see Figure 1 The base 300 in this embodiment includes a connecting plate 310, a supporting plate 320 and a bottom plate 330 of an integrated structure. The supporting plate 320 is horizontally arranged, the connecting plate 310 is arranged on the bottom surface of the supporting plate 320, and the first supporting member 100 and the second supporting member 200 are arranged on the top surface of the supporting plate 320.

[0030] The bottom plate 330 is arranged in parallel with the support plate 320 , and the connecting plate 310 is arranged between the bottom plate 330 and the support plate 320 .

[0031] Optionally, see Figure 2 The straightening device 400 in this embodiment also includes a first pulley 430 and a second pulley 440. The first pulley 430 is arranged at the bottom end of the first vertical arm 411, and the second pulley 440 is arranged at the bottom end of the second vertical arm 412. The first pulley 430 and the second pulley 440 slide along the top surface of the bottom plate 330 respectively.

[0032] Optionally, the straightening device 400 in this embodiment further includes a first guide block 450 and a second guide block 460. The first guide block 450 is disposed on the inner side of the first vertical arm 411 (i.e., the side facing the base support plate), and the first guide block 450 is provided with a first guide groove 451 on the side facing away from the first vertical arm 411 (i.e., the inner side), and the first guide groove 451 is slidably matched with the edge of the support plate 320. The second guide block 460 is disposed on the inner side of the second vertical arm 412 (i.e., the side facing the base support plate), and the second guide block 460 is provided with a second guide groove 461 on the side facing away from the second vertical arm 412, and the second guide groove 461 is slidably matched with the edge of the support plate 320, and the second guide block 460 and the first guide block 450 are symmetrically arranged with respect to the length direction of the support plate 320. The second guide block 460 and the first guide block 450 cooperate with opposite sides of the support plate 320 respectively to achieve sliding guiding positioning of the straightening device 400 .

[0033] The measuring principle of the straightening equipment in this embodiment is as follows: the long straight piece 20 to be straightened is placed on the first support member 100 and the second support member 200, and the measuring dial indicator is installed at the end face of the bracket 410. The measuring dial indicator is moved to record the bending change curve of the long straight piece 20 to be straightened, and the position that needs to be straightened is determined to prepare for measurement; wherein the measuring dial indicator is a national standard measuring tool, which can be used to measure the parallelism of the long straight piece 20 to be straightened.

[0034] The working principle of the straightening device in this embodiment is as follows: through repeated bending straightening, the workpiece is repeatedly bent in the same plane by the screw 422 and the bending amount is gradually reduced until the bending amount is equal to the springback amount and the workpiece becomes straight. The alternating stresses on various parts of the long straight piece 20 to be straightened are superimposed on the internal residual stress, so that the long straight piece 20 to be straightened locally yields, causing slight plastic deformation, reducing the residual stress in the long straight piece 20 to be straightened, redistributing it to be uniform and enhancing the deformation resistance of the metal matrix, thereby achieving the purpose of improving the geometric accuracy and stability of the workpiece. This process method is called vibration stabilization treatment.

[0035] The straightening process is as follows: place the long straight piece 20 to be straightened on the first support member 100 and the second support member 200 and adjust the position; move the straightening device 400 to the bending part according to the measurement result; rotate the handwheel 421 to compress the screw 422; and use the measuring dial indicator to measure the parallelism; continue to rotate the handwheel 421 to make the screw 422 in the calibration position and continue to compress; after a period of time, unscrew the handwheel 421 to measure the parallelism; repeat the above steps until the handwheel 421 is in a parallel position.

[0036] The above vibration stabilization treatment process is usually used to stabilize parts. It is borrowed here to straighten long straight parts, and quickly and accurately correct bent, twisted and deformed long straight rods. It can improve production efficiency, improve product accuracy and quality, and reduce labor costs and error rates, and restore them to the expected straight state. However, heating, hammering, etc. However, this type of press also exposes defects such as high labor costs, high labor intensity, straightening accuracy that does not meet the required process requirements, and low production efficiency. The appearance of the straightening equipment for long straight parts in the embodiment of the present application improves this situation.

[0037] The straightening equipment for long straight pieces in the embodiment of the present application can effectively correct the main deformation parts of the entire long straight piece and measure the correction status. The deformation amount can be adjusted from 3 to 5 mm to within 0.1 mm. The service life of the equipment is increased by about 35% compared with before, and the equipment cost is reduced by about 60%. It solves the problems of gradual failure of screw rods, transmission shafts, etc. under heavy loads, and abnormal problems such as bending and deformation of the screw rod under high load conditions affecting the production efficiency of the equipment. Good working results have been achieved in actual production.

[0038] The straightening device for long straight parts provided in the embodiment of the present application is an efficient and convenient manual straightening tool, which can be used for the straightening of most long straight parts such as screw rods, polished rods, transmission shafts, etc. It has the characteristics of easy movement and simple structure. It can correct the main deformation parts of the entire shaft. In combination with measuring instruments, it can ensure that the straightening accuracy is within 0.1mm, which meets the use requirements of long straight parts straightening.

[0039] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A straightening device for a long straight piece, characterized in that: The straightening equipment includes a base, a first support member, a second support member and a straightening device. The base is a long straight structure. The first support member and the second support member are arranged on the top surface of the base and are arranged along the length direction of the base. The first support member and the second support member are used to jointly support the long straight member to be straightened. The straightening device is straddled on the base and can be moved along the length direction of the base. The straightening device is used to press against and straighten the part of the long straight member to be straightened located between the first support member and the second support member.

2. The straightening device according to claim 1, characterized in that: The straightening device comprises a bracket and a straightening piece. The bracket is arranged across the base and is provided with a mounting hole. The straightening piece is connected to the bracket through the mounting hole. The straightening piece is used to resist the long straight piece to be straightened.

3. The straightening device according to claim 2, characterized in that: The bracket is an n-type structure, including a first vertical arm, a horizontal arm and a second vertical arm connected in sequence, the first vertical arm and the second vertical arm are respectively located on both sides of the base, the horizontal arm is respectively connected to the top of the first vertical arm and the second vertical arm, and the horizontal arm is provided with the mounting hole.

4. The straightening device according to claim 3, characterized in that: The straightening member includes a handwheel and a screw rod, one end of the screw rod is connected to the handwheel, the mounting hole is a threaded hole, the screw rod is inserted into the threaded hole and threadedly engaged with the threaded hole, and the other end of the screw rod is used to push against the long straight member to be straightened.

5. The straightening device according to claim 3, characterized in that: The base includes a connecting plate and a supporting plate of an integral structure. The supporting plate is arranged horizontally. The connecting plate is arranged on the bottom surface of the supporting plate. The first supporting member and the second supporting member are arranged on the top surface of the supporting plate.

6. The straightening device according to claim 5, characterized in that: The base also includes a bottom plate, which is arranged parallel to the support plate, and the connecting plate is arranged between the bottom plate and the support plate.

7. The straightening device according to claim 6, characterized in that: The straightening device also includes a first pulley and a second pulley, wherein the first pulley is arranged at the bottom end of the first vertical arm, and the second pulley is arranged at the bottom end of the second vertical arm, and the first pulley and the second pulley slide along the top surface of the bottom plate respectively.

8. The straightening device according to claim 7, characterized in that: The straightening device also includes a first guide block, which is arranged on the inner side of the first vertical arm. A first guide groove is provided on the side of the first guide block away from the first vertical arm. The first guide groove slides with the edge of the support plate to achieve sliding guide positioning of the straightening device.

9. The straightening device according to claim 8, characterized in that: The straightening device also includes a second guide block, which is arranged on the inner side of the second vertical arm. A second guide groove is provided on the side of the second guide block away from the second vertical arm. The second guide groove is slidably matched with the edge of the support plate. The second guide block and the first guide block are symmetrically arranged relative to the length direction of the support plate.

10. The straightening device according to claim 1, characterized in that: A first V-shaped groove is provided on the top of the first supporting member, and a second V-shaped groove is provided on the top of the second supporting member. The first V-shaped groove and the second V-shaped groove are used together to support the long straight member to be straightened.

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