A pivot correction mechanism

Abstract

This utility model relates to the field of shaft processing technology, specifically disclosing a shaft straightening mechanism, including a processing table and a frame mounted on the processing table. A pressure-applying structure is vertically slidably connected to the frame, and a power unit is provided on the frame for driving the pressure-applying structure to slide vertically on the frame. Fasteners for fixing the shaft body are provided on the processing table. The shaft body is mounted on the fasteners, and then the power unit drives the pressure-applying structure to move downward, performing stamping straightening on the shaft body. The downward stroke of the pressure-applying structure driven by the power unit is fixed. At this time, it is only necessary to ensure that the pressure-applying structure contacts the shaft body and applies a certain pressure to straighten the shaft body. This effectively avoids instantaneous impact loads, reduces the risk of over-straightening or local stress concentration, and avoids the impact and uneven force problems caused by manual hammering.

Description

Technical Field

[0001] This utility model relates to the field of shaft processing technology, specifically a shaft straightening mechanism. Background Technology

[0002] As a key basic component in mechanical equipment, the straightness and coaxiality of the shaft directly affect the transmission accuracy and operational stability of the equipment. During the production and processing, due to factors such as stress release during heat treatment, mechanical processing stress, or improper subsequent treatment, the shaft is prone to deformation such as bending and twisting.

[0003] To ensure product quality, it is usually necessary to screen out shafts with excessive deformation through testing agencies and correct them to restore their usability.

[0004] Currently, common correction methods mainly include manual correction and automated equipment correction.

[0005] Manual straightening relies heavily on the operator's experience to apply pressure using hammers, presses, and other methods. The straightening force, point of application, and holding time are difficult to quantify precisely and maintain consistency. This can easily lead to localized stress concentration on the shaft due to excessive instantaneous load or repeated adjustments, resulting in more severe plastic deformation or even breakage.

[0006] While existing automated straightening equipment reduces fluctuations caused by human factors to some extent, its drive system (such as hydraulic or electric actuators) typically employs simple stroke control or threshold force control when applying straightening force. This approach is insufficiently adaptable to shafts with varying material properties and initial bending morphologies. It also suffers from excessive rigidity during force application, a lack of real-time feedback and dynamic adjustment capabilities, and is prone to over-correction or impact damage at the moment the preset stroke or force value is reached, thus exhibiting certain shortcomings. Utility Model Content

[0007] The purpose of this invention is to provide a shaft straightening mechanism to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a shaft straightening mechanism, comprising a processing table and a frame mounted on the processing table, wherein a pressure applying structure is vertically slidably connected to the frame, and a power unit for driving the pressure applying structure to slide vertically on the frame is provided on the frame; fasteners for fixing the shaft body are provided on the processing table.

[0009] Furthermore, the rotating shaft body includes an integrally formed shaft and a connecting surface.

[0010] Furthermore, the fastener includes a jig block mounted on a processing table, a jig cylinder rotatably connected to the jig block, and a plurality of mounting slots adapted to the connection surface are provided inside the jig cylinder.

[0011] Furthermore, the fixture block is provided with a positioning unit for fixing the fixture cylinder.

[0012] Furthermore, the pressure-applying structure includes a support platform slidably connected to the frame, a correction rod is provided on the bottom of the support platform, and a reset component is also provided between the support platform and the frame.

[0013] Furthermore, the power unit includes a pressure rod rotatably connected to the frame, and a pressure block is rotatably connected to the pressure rod. The pressure block and the support platform are connected by a linkage transmission.

[0014] Furthermore, the pressure rod includes an arc-shaped rod body, with both ends of the arc-shaped rod body being rotatably connected to the frame via straight rod bodies, and the pressure block is disposed at the arc-shaped rod body.

[0015] Furthermore, a power handle is installed on one of the straight rods.

[0016] Furthermore, the reset component includes an extension block mounted on a support platform, and a vertical groove adapted to the extension block is provided on the frame, with the extension block vertically slidably connected in the vertical groove; a reset spring is also provided between the extension block and the vertical groove.

[0017] Furthermore, each of the straight rods is provided with a bearing between itself and the frame.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This shaft straightening mechanism, through the cooperation between the processing table, frame, pressure structure, power unit and fasteners, allows the shaft body to be installed on the fasteners during use. Then, the power unit drives the pressure structure to move downward to perform stamping straightening on the shaft body. The stroke of the power unit driving the pressure structure downward is fixed. At this time, it is only necessary to ensure that the pressure structure moves downward and contacts the shaft body and applies a certain pressure to straighten the shaft body. This effectively avoids instantaneous impact loads, reduces the risk of over-straightening or local stress concentration, and avoids the impact and uneven force problems caused by manual hammering, thus improving the consistency and efficiency of the straightening operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model; Figure 2This is a schematic diagram of the overall structure from another perspective, provided for an embodiment of the present utility model. Figure 3 This is a schematic diagram of the installation method of the pressure rod provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the installation method of the reset component provided in an embodiment of the present utility model; Figure 5 A schematic diagram of the fastener structure provided in the embodiment of this utility model; Figure 6 This is a schematic diagram of the rotating shaft body structure provided in an embodiment of the present utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Machining table; 2. Machine frame; 3. Fixture block; 4. Bearing platform; 5. Correcting rod; 6. Pressure block; 7. Connecting rod; 8. Pressure rod; 81. Straight rod body; 82. Curved rod body; 9. Power handle; 10. Reset component; 11. Fixture cylinder; 12. Positioning unit; 13. Rotating shaft body; 131. Connecting surface; 132. Shaft body. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-6 This utility model provides a technical solution: a shaft straightening mechanism, including a processing table 1 and a frame 2 installed on the processing table 1. A pressure structure is vertically slidably connected to the frame 2, and a power unit for driving the pressure structure to slide vertically on the frame 2 is provided on the frame 2; fasteners for fixing the shaft body 13 are provided on the processing table 1.

[0024] Specifically, the shaft straightening mechanism includes a processing table 1 and a frame 2 mounted on the processing table 1. Preferably, an anti-slip pad is provided at the bottom of the processing table 1 to improve the stability of the entire straightening mechanism during operation. Simultaneously, a pressure-applying structure is vertically slidably connected to the frame 2 to perform straightening operations on the shaft body 13. The frame 2 is also equipped with a power unit to drive the pressure-applying structure to slide vertically on the frame 2, providing power for the vertical sliding of the pressure-applying structure. Fasteners are provided on the processing table 1 to fix the shaft body 13, further improving the stability of the shaft body 13 during straightening operations and achieving better results. During use, the shaft body 13 is installed on the fastener, and then the power unit drives the pressure structure to move downward to press and straighten the shaft body 13. The stroke of the pressure structure driven downward by the power unit is fixed. At this time, it is only necessary to ensure that the pressure structure moves downward and contacts the shaft body 13 and applies a certain pressure to straighten the shaft body 13. This effectively avoids instantaneous impact loads, reduces the risk of over-straightening or local stress concentration, and avoids the impact and uneven force problems caused by manual hammering, thus improving the consistency and efficiency of the straightening operation.

[0025] In the embodiments provided by this utility model, the rotating shaft body 13 includes an integrally formed shaft body 132 and a connecting surface 131. During the correction process, the rotating shaft is fixed to the fastener through its connecting surface 131, while the shaft body 132 bears the correction force from the pressure structure, thus meeting the correction requirements of the rotating shaft body 13.

[0026] In the embodiments provided by this utility model, the fastener includes a jig block 3 mounted on a processing table 1. A jig cylinder 11 is rotatably connected to the jig block 3, and the jig cylinder 11 has multiple mounting slots adapted to the connecting surface 131. The jig cylinder 11 and the multi-slot design enable the mechanism to adapt to various rotating shafts with different connecting surface 131 shapes, thereby improving the versatility of the equipment.

[0027] In the embodiments provided by this utility model, a positioning unit 12 for fixing the fixture cylinder 11 is provided on the fixture block 3. Specifically, the positioning unit 12 includes a threaded rod threadedly connected to the fixture block 3, wherein the threaded rod abuts against the fixture cylinder 11. When it is necessary to fix the fixture cylinder 11, the threaded rod is driven to rotate, and the end of the threaded rod contacts the fixture cylinder 11 to fix the fixture cylinder 11. When it is necessary to adjust the state of the fixture cylinder 11, it is only necessary to drive the threaded rod away from the fixture cylinder 11, at which time the fixture cylinder 11 can rotate, which can meet the fastening operation of different models of rotating shaft bodies 13, and the use effect is better.

[0028] In the embodiments provided by this utility model, the pressure-applying structure includes a support platform 4 slidably connected to the frame 2, a straightening rod 5 is provided on the bottom of the support platform 4, and a reset member 10 is also provided between the support platform 4 and the frame 2. The power unit pushes the support platform 4 to slide vertically down the frame 2, causing the straightening rod 5 to press against the bent protrusion of the rotating shaft. The reset member 10 is compressed and stores energy during the straightening process. When the power is removed, the reset member 10 releases energy to push the support platform 4 and the straightening rod 5 to automatically return to their original positions.

[0029] In the embodiments provided by this utility model, the power unit includes a pressure rod 8 rotatably connected to the frame 2, and a pressure block 6 rotatably connected to the pressure rod 8. The pressure block 6 and the support platform 4 are connected by a connecting rod 7. Preferably, one end of the connecting rod 7 is hinged to the pressure block 6, and the other end is hinged to the support platform 4. Both the pressure block 6 and the support platform 4 are provided with clearance grooves to allow the connecting rod 7 to rotate and avoid motion interference. The pressure rod 8 includes an arc-shaped rod body 82, and both ends of the arc-shaped rod body 82 are rotatably connected to the frame 2 by straight rod bodies 81. The pressure block 6 is disposed at the arc-shaped rod body 82. Specifically, when the operator drives the pressure rod 8 to rotate, the pressure rod 8 converts the rotational motion into the linear lifting motion of the support platform 4 through the connecting rod 7. The pressure block 6 rotates with the pressure rod 8 and can roll upon contact to reduce friction. The arc-shaped rod body 82 design increases the stroke of the pressure block 6, allowing the support platform 4 to obtain a larger lifting displacement within a limited operating angle, thereby improving the correction capability range of the mechanism. Specifically, when the arc-shaped rod 82 is at its lowest position, the straightening rod 5 contacts the rotating shaft body 13, thus achieving the straightening operation of the rotating shaft body 13. Preferably, a bearing is provided between the pressure block 6 and the arc-shaped rod 82 to reduce friction.

[0030] In the embodiments provided by this utility model, a power handle 9 is provided on one of the straight rods 81. The power handle 9 conforms to the ergonomic application point, so that the operator can apply the control force more comfortably and with less effort.

[0031] In the embodiments provided by this utility model, the reset component 10 includes an extension block mounted on the support platform 4, and a vertical groove adapted to the extension block is provided on the frame 2. The extension block is vertically slidably connected in the vertical groove; a reset spring is also provided between the extension block and the vertical groove. When the support platform 4 is pressed down, the extension block compresses the reset spring. After the corrective force is removed, the elastic force of the reset spring pushes the extension block and the support platform 4 to reset upward. Moreover, when the extension block slides vertically inside the vertical groove, it can improve the stability of the support platform 4 during sliding, resulting in better performance.

[0032] In the embodiments provided by this utility model, each straight rod 81 is provided with a bearing between it and the frame 2, which greatly reduces the frictional resistance when the pressure rod 8 rotates, making the operation more convenient and labor-saving.

[0033] Working principle: First, the connecting surface 131 of the shaft body 13 to be corrected is placed into the matching mounting groove in the fixture cylinder 11. The fixture cylinder 11 is then locked onto the fixture block 3 by rotating the threaded rod in the positioning unit 12, thereby firmly fixing the shaft body 13 onto the processing table 1. During the correction operation, the operator holds the power handle 9 and rotates the pressure rod 8 downwards. The arc-shaped rod 82 of the pressure rod 8 drives the pressure block 6 rotatably connected to it to move together. The pressure block 6 pushes the support platform 4 to slide vertically downwards along the frame 2 through the connecting rod 7. The correction rod 5 fixed at the bottom of the support platform 4 moves downwards and presses against the bent protrusion of the shaft body 132 of the shaft body 13. During this process, the extension block on the support platform 4 moves down in the vertical groove of the frame 2 and compresses the return spring in the reset component 10, so that the correction force acts continuously and smoothly on the shaft, avoiding instantaneous impact. Once the bent section of the shaft gradually returns to straightness under continuous pressure, the operator releases the power handle 9. At this point, the return spring releases its stored elastic potential energy, pushing the extension block and support platform 4 upwards to reset, causing the straightening rod 5 to detach from the shaft surface, thus completing one straightening operation. The above operation is labor-saving and the force application process is controllable, effectively overcoming problems such as over-correction and stress concentration that are easily caused by manual hammering or traditional automated equipment.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shaft straightening mechanism, comprising a processing table (1) and a frame (2) mounted on the processing table (1), characterized in that: A pressure-applying structure is vertically slidably connected to the frame (2), and a power unit for driving the pressure-applying structure to slide vertically on the frame (2) is provided on the frame (2); The processing table (1) is provided with fasteners for fixing the rotating shaft body (13).

2. The shaft straightening mechanism according to claim 1, characterized in that: The rotating shaft body (13) includes an integrally formed shaft (132) and a connecting surface (131).

3. The shaft straightening mechanism according to claim 2, characterized in that: The fastener includes a jig block (3) mounted on a processing table (1), a jig cylinder (11) rotatably connected to the jig block (3), and a plurality of mounting slots adapted to the connecting surface (131) are provided inside the jig cylinder (11).

4. The shaft straightening mechanism according to claim 3, characterized in that: The fixture block (3) is provided with a positioning unit (12) for fixing the fixture cylinder (11).

5. A shaft straightening mechanism according to claim 2, characterized in that: The pressure-applying structure includes a support platform (4) that is slidably connected to the frame (2), a correction rod (5) is provided on the bottom of the support platform (4), and a reset member (10) is provided between the support platform (4) and the frame (2).

6. The shaft straightening mechanism according to claim 5, characterized in that: The power unit includes a pressure rod (8) rotatably connected to the frame (2), and a pressure block (6) is rotatably connected to the pressure rod (8). The pressure block (6) and the support platform (4) are connected by a connecting rod (7).

7. A shaft straightening mechanism according to claim 6, characterized in that: The pressure rod (8) includes an arc-shaped rod body (82), and the two ends of the arc-shaped rod body (82) are rotatably connected to the frame (2) through straight rod bodies (81). The pressure block (6) is set at the arc-shaped rod body (82).

8. The shaft straightening mechanism according to claim 7, characterized in that: One of the straight rods (81) is provided with a power handle (9).

9. A shaft straightening mechanism according to claim 5, characterized in that: The reset component (10) includes an extension block installed on the support platform (4), and the frame (2) has a vertical groove adapted to the extension block, and the extension block is vertically slidably connected in the vertical groove; A reset spring is also provided between the extension block and the vertical groove.

10. A shaft straightening mechanism according to claim 7, characterized in that: Each of the straight rods (81) is provided with a bearing between itself and the frame (2).

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