A processing and straightening device for an elongated shaft and a method thereof

Abstract

The application provides a processing straightening device for an elongated shaft, relates to the technical field of shaft processing, and solves the problem that a straightening machine is prone to causing the shaft to deviate to a gap during straightening processing because a placement groove cannot be suitable for a shaft with a small diameter. The base is provided with thimbles on both sides, the base is connected with displacement blocks between the thimbles on the top, one side of the base is provided with a pressure applicator, one side of the pressure applicator is provided with a block, the top of the displacement blocks is provided with a placement block, the middle of the top of the placement block is provided with a abutting assembly, the abutting assembly is provided with two opposite abutting assemblies, and the abutting assembly swings along the shaft. The abutting assembly arranged in the device can make the shaft deviate and deform on the abutting assembly through weight pressure when the shaft is placed for processing, so that the shaft can be better clamped on the shaft with different diameters, and the shaft is not prone to deviating during the process of pressure straightening.

Description

Technical Field

[0001] This invention relates to the field of shaft machining technology, and more specifically, to a machining and straightening device and method for slender shafts. Background Technology

[0002] During the machining process of shafts, straightening machines are used to straighten the shafts to a certain extent. In particular, slender shafts are often bent during machining due to their excessive length, so straightening machines are needed to straighten them.

[0003] Existing straightening machines straighten shafts by placing them on a platform and applying pressure to them. However, during placement, shafts of varying diameters will leave gaps on both sides when placed into the groove of the platform. These gaps can easily cause the shaft to shift under pressure, affecting the accuracy of the straightening process. Summary of the Invention

[0004] The purpose of this invention is to provide a machining and straightening device and method for slender shafts, which solves the problem that when a straightening machine is straightening, the placement groove cannot be used for shafts with small diameters, causing the shaft to easily shift into the gap during the straightening process.

[0005] The embodiments of the present invention are achieved through the following technical solutions:

[0006] The present invention provides a machining and straightening device for a slender shaft, including a base, pins on both sides of the base, a displacement block connected between the pins at the top of the base, a pressure device on one side of the base, a stop block on one side of the pressure device, a placement block on the top of the displacement block, and a stop component in the middle of the top of the placement block. The stop components are two oppositely arranged together and swing along the shaft.

[0007] Preferably, the abutment component includes a pressing block, a deflection groove, and a folding plate. The deflection groove is disposed on the top of the placement block, the pressing block is connected to the middle of the deflection groove, and the folding plate is disposed inside the pressing block.

[0008] Preferably, the extrusion block is a square block with an arc-shaped groove at the top, which is set in the deflection groove.

[0009] Preferably, the folding plate is a plurality of plates folded in a triangular shape.

[0010] Preferably, the extrusion block includes a deflection shaft, a cavity, an elastic layer, and a displacement groove. The deflection shaft is disposed on one side of the extrusion block, the cavity is disposed inside the extrusion block near the top, the elastic layer is disposed on the top of the extrusion block, and the displacement groove is disposed on both sides of the bottom of the cavity.

[0011] Preferably, the extrusion block is connected to both sides of the inner wall of the deflection groove via a deflection shaft, and both ends of the deflection shaft are connected to both sides of the inner wall of the deflection groove via torsion springs.

[0012] Preferably, a folding plate is connected in the cavity.

[0013] Preferably, the folding plate includes a hinge shaft, and the folding plates are folded together by means of the hinge shaft.

[0014] Preferably, the two ends of the hinge shaft protrude and fit into the displacement groove.

[0015] Preferably, a machining straightening method based on a slender shaft machining straightening device comprises the following steps:

[0016] The first step, after the slender shaft is machined and straightened for the first time, is to allow it to stand still.

[0017] The second step is to perform a second straightening of the slender shaft after the first straightening has been completed and the shaft has been left to stand for at least 24 hours.

[0018] In the first and second steps, when the slender shaft is straightened by the straightening machine, when the slender shaft is placed on the placement block, pressure is applied to the abutment component to cause it to deflect, thereby abutting both sides of the slender shaft. Because the diameter of the slender shaft is too small, the two sides cannot fit into the placement groove of the placement block, leaving room for offset. This causes the shaft to deflect even when it is abutted by the ejector pin during the straightening process, affecting the straightening effect.

[0019] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects:

[0020] 1. The abutment component in this device can be used to apply pressure to the machining shaft when it is placed, causing the abutment component to deflect and deform, so as to better fit and clamp the machining shaft of different diameters. The shaft may shift during the pressure and straightening process. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a side view of the structure of the present invention;

[0024] Figure 3 This is a side cross-sectional view of the placement block of the present invention;

[0025] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A;

[0026] Figure 5 This is a frontal cross-sectional view of the extrusion block of the present invention;

[0027] Icons: Base 1, Ejector pin 101, Displacement block 102, Pressure applicator 2, Abutment block 201, Placement block 3, Extrusion block 301, Deflection shaft 3011, Cavity 3012, Elastic layer 3013, Displacement groove 3014, Deflection groove 302, Folding plate 303, Hinge shaft 3031. Detailed Implementation

[0028] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] The following is combined with Figures 1 to 5 The present invention will be described in detail below.

[0030] A machining and straightening device for a slender shaft includes a base 1, with ejector pins 101 on both sides of the base 1, a displacement block 102 connected between the ejector pins 101 at the top of the base 1, a pressure applicator 2 on one side of the base 1, a stop block 201 on one side of the pressure applicator 2, a placement block 3 on the top of the displacement block 102, and a stop component in the middle of the top of the placement block 3. The stop components are two oppositely arranged together and swing along the shaft.

[0031] First, place the shaft to be straightened on the placement block 3 on top of the displacement block 102. Then, apply force to both ends of the shaft by extending and retracting the ejector pins 101 at both ends to fix the shaft and prevent it from easily shifting. Then, rotate the ejector pins 101 to drive the shaft to rotate as well. Test its bending degree by the detection rod on the base 1. Then, apply pressure by moving the abutment block 201 on the pressure applicator 2 down to the shaft to straighten it.

[0032] When the shaft is placed on the placement block 3, the weight of the shaft applies pressure to the abutment component, causing the abutment component to deflect to one side. This causes the two sides of the abutment component to shift and abut against the two sides of the shaft, thereby clamping and fixing the shaft and preventing it from shifting when subjected to force on the placement block 3 due to its small diameter.

[0033] Furthermore, the abutment component includes a pressing block 301, a deflection groove 302, and a folding plate 303. The deflection groove 302 is disposed on the top of the placement block 3, the pressing block 301 is connected to the middle of the deflection groove 302, and the folding plate 303 is disposed inside the pressing block 301. The pressing block 301 is a square block with an arc-shaped groove at the top disposed in the deflection groove 302. The folding plate 303 consists of several plates folded in a triangular shape. The pressing block 301 includes a deflection shaft 3011, a cavity 3012, an elastic layer 3013, and a displacement groove 3014. The deflection shaft 3011 is disposed on one side of the pressing block 301, and the cavity 3012... An elastic layer 3013 is disposed on the top of the extrusion block 301, and a displacement groove 3014 is disposed on both sides of the bottom of the cavity 3012. The extrusion block 301 is connected to both sides of the inner wall of the deflection groove 302 via a deflection shaft 3011, and both ends of the deflection shaft 3011 are connected to both sides of the inner wall of the deflection groove 302 via torsion springs. A folding plate 303 is connected in the cavity 3012. The folding plate 303 includes a hinge shaft 3031. The folding plates 303 are folded together by the hinge shaft 3031, and both ends of the hinge shaft 3031 protrude and fit in the displacement groove 3014.

[0034] When the shaft to be straightened is placed on the placement block 3, it will be placed on top of the two pressing blocks 301. The weight of the shaft will apply pressure, forcing the pressing blocks 301 to deflect, so that the shaft can be inserted. The deflection of the pressing blocks 301 is achieved by deflection shaft 3011 on one side, so that the pressing blocks 301 will deflect along the deflection shaft 3011 and move into the deflection groove 302. When the pressing blocks 301 deflect along the deflection shaft 3011, the remaining parts will close towards the center, so that the part with the elastic layer 3013 will fit against the two sides of the shaft to clamp the shaft, so that it will not shift when pressure is applied to straighten it.

[0035] Simultaneously, when the elastic layer 3013 is attached to both sides of the shaft, the folded plate 303 inside the cavity 3012 is squeezed by the pressure applied. The pressure on the folded plate 303 forces it to extend through the hinge shaft 3031. When the part of the folded plate 303 that is attached extends to both sides, it forces the other parts of the folded plate 303 to close. When the folded plate 303 closes, its height increases, forcing the elastic layer 3013 to deform and directly attach to both sides of the shaft. This allows a groove to be formed that matches the curvature of the shaft surface, resulting in a tight fit. The protruding parts on both sides of the hinge shaft 3031 at the bottom of the folded plate 303 cooperate with the displacement groove 3014, making the bottom closure and extension of the folded plate 303 more stable and preventing it from tilting.

[0036] Furthermore, a machining straightening method based on a slender shaft machining straightening device comprises the following steps:

[0037] The first step, after the slender shaft is machined and straightened for the first time, is to allow it to stand still.

[0038] The second step is to perform a second straightening of the slender shaft after the first straightening has been completed and the shaft has been left to stand for at least 24 hours.

[0039] The fact that slender shafts are straightened for the first time without heat treatment, and then straightened for the second time, can effectively reduce the risk of bumps and knocks when cutting them for heat treatment, and can also effectively reduce the cost of using heat treatment equipment.

[0040] In the first and second steps, when the slender shaft is straightened by the straightening machine, when the slender shaft is placed on the placement block 3, pressure is applied to the abutment component to cause it to deflect, thereby abutting both sides of the slender shaft. Because the diameter of the slender shaft is too small, the two sides cannot fit into the placement groove of the placement block 3, leaving room for offset. This causes the shaft to deflect even when there is a pin abutting it during the straightening process, affecting the straightening effect.

[0041] The following is a detailed implementation process of the present invention: First, the shaft to be straightened is placed on the placement block 3 on top of the displacement block 102. Then, the two ends of the shaft are fixed by the extension and retraction of the ejector pins 101, preventing easy displacement. The shaft is then rotated by the rotation of the ejector pins 101. The bending degree is tested by the detection rod on the base 1. Then, the abutment block 201 on the pressure applicator 2 moves down to press against the shaft to straighten it. When the shaft to be straightened is placed on the placement block 3, two compression blocks 301 are placed on it. The top of the shaft is fitted, and the weight of the shaft applies pressure, which forces the pressing block 301 to deflect, allowing the shaft to be inserted. The deflection of the pressing block 301 is achieved by deflecting the shaft 3011 on one side, causing the pressing block 301 to move along the deflection shaft 3011 into the deflection groove 302. When the pressing block 301 deflects along the deflection shaft 3011, the remaining parts will close towards the center, so that the part with the elastic layer 3013 fits against the two sides of the shaft to clamp the shaft, preventing it from shifting when pressure is applied for straightening.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A machining and straightening device for a slender shaft, comprising a base (1), wherein ejector pins (101) are provided on both sides of the base (1), a displacement block (102) is connected between the ejector pins (101) at the top of the base (1), a pressure applicator (2) is provided on one side of the base (1), a stop block (201) is provided on one side of the pressure applicator (2), and a placement block (3) is provided on the top of the displacement block (102), characterized in that, The top center of the placement block (3) is provided with abutting components, which are two abutting components arranged opposite each other and swinging along the axis; The abutment component includes a pressing block (301), a deflection groove (302), and a folding plate (303). The deflection groove (302) is disposed on the top of the placement block (3), the pressing block (301) is connected to the middle of the deflection groove (302), and the folding plate (303) is disposed inside the pressing block (301). The extrusion block (301) includes a deflection shaft (3011), a cavity (3012), an elastic layer (3013), and a displacement groove (3014). The deflection shaft (3011) is disposed on one side of the extrusion block (301), the cavity (3012) is disposed inside the extrusion block (301) near the top, the elastic layer (3013) is disposed on the top of the extrusion block (301), and the displacement groove (3014) is disposed on both sides of the bottom of the cavity (3012). The extrusion block (301) is connected to both sides of the inner wall of the deflection groove (302) via a deflection shaft (3011), and both ends of the deflection shaft (3011) are connected to both sides of the inner wall of the deflection groove (302) via torsion springs. A folding plate (303) is connected in the cavity (3012); The folding plate (303) includes a hinge shaft (3031), and the folding plates (303) are folded together by the hinge shaft (3031); The two ends of the hinge shaft (3031) protrude and fit into the displacement groove (3014).

2. The machining and straightening device for a slender shaft according to claim 1, characterized in that, The extrusion block (301) is a square block with an arc-shaped groove at the top, which is set in the deflection groove (302).

3. The machining and straightening device for a slender shaft according to claim 1, characterized in that, The folding plate (303) consists of several plates folded in a triangular shape.

4. A machining and straightening method based on the slender shaft machining and straightening device according to any one of claims 1-3, comprising the following steps: The first step, after the slender shaft is machined and straightened for the first time, is to allow it to stand still. The second step is to perform a second straightening of the slender shaft after the first straightening has been completed and the shaft has been left to stand for at least 24 hours. In the first and second steps, when the slender shaft is straightened by the straightening machine, when the slender shaft is placed on the placement block (3), pressure is applied to the abutment component to cause it to deflect, thereby abutting both sides of the slender shaft. Because the diameter of the slender shaft is too small, the two sides cannot fit into the placement groove of the placement block (3), leaving room for offset. This causes the shaft to deflect even when there is a pin abutting it during the straightening process, affecting the straightening effect.

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