Crankshaft forging correction device

Abstract

The utility model discloses a crankshaft forging correction device which comprises a first U-shaped frame, a correction positioning mechanism is arranged on the inner side of the first U-shaped frame, and extrusion correction mechanisms are symmetrically arranged at the top and the bottom of the correction positioning mechanism. A crankshaft workpiece needing to be corrected after forging is placed in the correction module on the lower portion, the first hydraulic cylinder drives the second mounting frame and the correction module on the upper portion to move downwards, then the second hydraulic cylinder is started, and the second hydraulic cylinder can push the pressing plate to extrude the correction module to move towards the interior of the first mounting frame and the interior of the second mounting frame; after the correction module is flush with the outer surfaces of the first mounting frame and the second mounting frame, the surface of the crankshaft workpiece can be tightly attached to the correction die cavity in the surface, so that the shape is extruded to be in a standard state, correction operation is completed, and the adverse effect on subsequent finish machining of the crankshaft due to deformation after the crankshaft is forged is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft processing, and specifically relates to a crankshaft forging correction device. Background Art

[0002] The so-called "crankshaft forging correction" refers to the process of correcting the crankshaft after forging. The importance of crankshaft forging correction is self-evident. As a core component in mechanical equipment such as engines, the accuracy of the shape and size of the crankshaft directly affects the performance and stability of the equipment. If the crankshaft has shape deviations or inaccurate dimensions during the forging process, it will lead to increased vibration and noise during equipment operation, and even affect the working efficiency and lifespan of the entire equipment. Therefore, through crankshaft forging correction, it can be ensured that the crankshaft workpiece meets the design requirements and standards, improve its quality and accuracy, thereby guaranteeing the reliability, safety, and performance of the entire mechanical equipment. During the crankshaft forging process, due to the influence of various factors such as material properties and forging processes, the crankshaft forgings often undergo a certain degree of deformation after forging, and this deformation may have an adverse impact on the subsequent finish machining of the crankshaft. The forging correction of the crankshaft is to fully ensure sufficient machining allowance during the subsequent finish machining process. At the same time, it is also to ensure the overall geometric tolerance of the crankshaft and effectively reduce the rejection rate during the crankshaft production process.

[0003] Currently, crankshaft forging correction is usually carried out using traditional methods. During the crankshaft forging process, due to material deformation and forging process limitations, the crankshaft may have shape deviations, inaccurate dimensions, or other defects. To solve these problems, traditionally, craftsmen usually use manual operations for correction, such as using hammers, chisels, grinding tools, etc., to perform local knocking, trimming, or grinding on the crankshaft workpiece to make its shape and size meet the design requirements.

[0004] However, this traditional manual correction method has some disadvantages. First, manual operations are affected by the individual technical level and experience of the craftsman, and it is difficult to ensure the accuracy and consistency of the correction. Second, manual operations are time-consuming and laborious, with low efficiency, and are prone to uneven treatment of the crankshaft surface, and may even introduce new defects. In addition, there are safety hazards during the manual correction process, and workers may face the risk of injury. Content of the Utility Model

[0005] In order to solve the problem that the crankshaft forgings often undergo a certain degree of deformation after forging, and this deformation may have an adverse impact on the subsequent finish machining life of the crankshaft; the purpose of the utility model is to provide a crankshaft forging correction device.

[0006] To solve the above technical problems, the present utility model adopts the following technical solutions: A crankshaft forging correction device, including a first U-shaped frame, a correction positioning mechanism is arranged inside the first U-shaped frame, and extrusion correction mechanisms are symmetrically arranged at the top and bottom of the correction positioning mechanism. The correction positioning mechanism includes a first installation frame and a second installation frame. Correction modules are arranged between the inner surfaces of the first installation frame and the second installation frame, and the two correction modules are symmetrically arranged. Both of the extrusion correction mechanisms include a second U-shaped frame. A plurality of second hydraulic cylinders are installed on the inner surfaces of the opposite sides of the two second U-shaped frames, and pressing plates are installed at the telescopic ends of the second hydraulic cylinders.

[0007] Preferably, the two second U-shaped frames are respectively fixedly connected to the outer surfaces of the opposite sides of the first installation frame and the second installation frame, and the plurality of pressing plates cooperate with the correction modules.

[0008] Preferably, a plurality of moving grooves are opened on the inner surfaces of both sides of the first installation frame and the second installation frame. A moving block is slidably connected to the inner surface of the moving groove, and the moving block is fixedly connected to the correction module.

[0009] Preferably, connection blocks are symmetrically and fixedly connected to the inner surface of the first U-shaped frame near the lower position. The outer surfaces of the opposite sides of the two connection blocks are respectively fixedly connected to the outer surfaces of both sides of the first installation frame.

[0010] Preferably, a first hydraulic cylinder is fixedly installed on the top of the first U-shaped frame. The telescopic end of the first hydraulic cylinder slidably penetrates through the top of the first U-shaped frame and extends downward. The bottom end of the first hydraulic cylinder is connected to the top of one of the second U-shaped frames.

[0011] Preferably, a damper and a spring are connected between the moving groove and the moving block, and the spring is sleeved outside the damper.

[0012] Preferably, guide rods are fixedly connected to the top of the first installation frame near the four corners. The outer surfaces of the guide rods slidably penetrate through the bottom of the second installation frame and extend upward.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] After placing the crankshaft workpiece that needs to be corrected after forging in the lower correction module and driving the second mounting frame and the upper correction module to move downward by the first hydraulic cylinder, the second hydraulic cylinder is then started. The second hydraulic cylinder will push the pressing plate to squeeze the correction module and move it into the first mounting frame and the second mounting frame. When the correction module is flush with the outer surfaces of the first mounting frame and the second mounting frame, the surface of the crankshaft workpiece will closely fit with the correction cavities on the surface, so that the shape is squeezed into a standard state, thus completing the correction operation, avoiding the adverse effects on the subsequent finish machining of the crankshaft due to deformation after forging;

[0015] When the second mounting frame approaches the first mounting frame under the action of the first hydraulic cylinder, the second mounting frame will slide on the surface of the guide rod, playing a role in guiding the second mounting frame, so that the first mounting frame and the second mounting frame can be accurately aligned, avoiding the deviation of the two correction modules inside, and improving the correction effect on the crankshaft workpiece.

[0016] In order to solve various problems of the traditional crankshaft forging correction method, a crankshaft forging correction device is introduced. The appearance of this device not only improves the accuracy and efficiency of correction, but also can reduce the influence of human factors on the correction result, ensuring the consistency and stability of correction. Through the power and control of the mechanical device, the crankshaft can be corrected more precisely, avoiding the introduction of new defects due to manual operation, and improving the quality and production efficiency of the crankshaft. Brief Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a three-dimensional view of the present invention.

[0019] Figure 2 It is a front view of the present invention.

[0020] Figure 3 It is a schematic structural diagram of the extrusion correction mechanism in the present invention.

[0021] Figure 4 It is a schematic structural diagram of the correction positioning mechanism in the present invention

[0022] Figure 5 In the present invention Figure 4 The enlarged structural diagram at A in it.

[0023] In the figure: 1. First U-shaped frame; 11. Connecting block; 12. First hydraulic cylinder; 2. Extrusion and correction mechanism; 201. Second U-shaped frame; 202. Second hydraulic cylinder; 203. Pressing plate; 3. Correction and positioning mechanism; 301. First mounting frame; 302. Second mounting frame; 303. Moving slot; 304. Correction module; 305. Guide rod; 306. Moving block; 307. Spring; 308. Damper. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Embodiment: As Figures 1-5 shown, the present invention provides a crankshaft forging correction device as shown in Figure 1 shown. The crankshaft forging correction device of this embodiment includes a first U-shaped frame 1. A correction and positioning mechanism 3 is arranged inside the first U-shaped frame 1. Extrusion and correction mechanisms 2 are symmetrically arranged at the top and bottom of the correction and positioning mechanism 3. The correction and positioning mechanism 3 includes a first mounting frame 301 and a second mounting frame 302. Correction modules 304 are arranged between the inner surfaces of the first mounting frame 301 and the second mounting frame 302, and the two correction modules 304 are symmetrically arranged. Both of the two extrusion and correction mechanisms 2 include a second U-shaped frame 201. A plurality of second hydraulic cylinders 202 are installed on the inner surfaces of the opposite sides of the two second U-shaped frames 201. Pressing plates 203 are installed at the telescopic ends of the second hydraulic cylinders 202.

[0026] Through the above technical solution, the correction module 304 is composed of multiple modules, and there are two groups in total. Correction cavities consistent with the size of the crankshaft are opened on the opposite surfaces of the two correction modules 304. The number of pressing plates 203 is the same as the number and size of the modules in the correction module 304. During use, the crankshaft to be corrected is placed in the inner cavity at the top of the correction module 304 inside the first mounting frame 301. When the first mounting frame 301 and the second mounting frame 302 are closely attached, the second hydraulic cylinders 202 in the two extrusion and correction mechanisms 2 are started. The second hydraulic cylinders 202 will push the pressing plates 203 to squeeze the correction module 304 to move inside the first mounting frame 301 and the second mounting frame 302. When the correction module 304 is flush with the outer surfaces of the first mounting frame 301 and the second mounting frame 302, the surface of the crankshaft workpiece will be closely attached to the correction cavity on the surface, so that the shape is squeezed into a standard state, thereby completing the correction operation, and avoiding adverse effects on the mechanical properties and service life of the crankshaft due to deformation after forging.

[0027] Furthermore, the two second U-shaped frames 201 are respectively fixedly connected to the outer surfaces of the opposite sides of the first mounting frame 301 and the second mounting frame 302, and a plurality of pressing plates 203 cooperate with the calibration module 304.

[0028] Through the above technical solution, the second U-shaped frame 201 is mainly used to install the extrusion calibration mechanism 2 on the surfaces of the first mounting frame 301 and the second mounting frame 302. The pressing plates 203 and the calibration module 304 are both divided into upper and lower groups, and the number of each group of pressing plates 203 and the calibration module 304 is set to four or more, and the two correspond one by one.

[0029] Furthermore, a plurality of moving grooves 303 are opened on the inner surfaces of both sides of the first mounting frame 301 and the second mounting frame 302. The inner surface of the moving groove 303 is slidably connected with a moving block 306, and the moving block 306 is fixedly connected with the calibration module 304.

[0030] Through the above technical solution, the moving block 306 cooperates with the moving groove 303 to install the calibration module 304 between the inner surfaces of the first mounting frame 301 and the second mounting frame 302. And this movable connection method makes that after the crankshaft is placed inside the two calibration modules 304, the deformed position of the crankshaft will push up the corresponding position of the calibration module 304, and the segmented calibration module 304 can sequentially calibrate the deformed parts of the crankshaft in different regions.

[0031] Furthermore, connection blocks 11 are symmetrically and fixedly connected to the inner surface of the first U-shaped frame 1 near the lower part. The outer surfaces of the opposite sides of the two connection blocks 11 are respectively fixedly connected to the outer surfaces of both sides of the first mounting frame 301.

[0032] Through the above technical solution, the connection block 11 is mainly used to fixedly connect the first mounting frame 301 and the first U-shaped frame 1. At the same time, the first U-shaped frame 1 plays a role in supporting the device.

[0033] Furthermore, a first hydraulic cylinder 12 is fixedly installed on the top of the first U-shaped frame 1. The telescopic end of the first hydraulic cylinder 12 slidably penetrates through the top of the first U-shaped frame 1 and extends downward, and the bottom end of the first hydraulic cylinder 12 is connected to the top of one of the second U-shaped frames 201.

[0034] Through the above technical solution, after the crankshaft is placed inside the lower calibration module 304, starting the first hydraulic cylinder 12 can drive the upper second U-shaped frame 201 and the second mounting frame 302 to move downward.

[0035] Furthermore, a damper 308 and a spring 307 are connected between the moving groove 303 and the moving block 306, and the spring 307 is sleeved outside the damper 308.

[0036] Through the above technical solution, a spring 307 is arranged between the movable block 306 and the movable groove 303, and the elasticity of the spring 307 can always squeeze the two correction modules 304 close to each other inside the first installation frame 301 and the second installation frame 302. Therefore, when the device is not in use, the correction module 304 will not shake at will. The spring 307 cooperates with the damper 308 so that the correction module 304 will slowly approach and squeeze the crankshaft workpiece after being squeezed, and the crankshaft workpiece has higher stability when subjected to force.

[0037] Furthermore, guide rods 305 are fixedly connected to the top of the first installation frame 301 near the four corners, and the outer surface of the guide rods 305 slides through the bottom of the second installation frame 302 and extends upward.

[0038] Through the above technical solution, when the upper second mounting frame 302 approaches the first mounting frame 301 under the action of the first hydraulic cylinder 12, the second mounting frame 302 will slide on the surface of the guide rod 305, thereby guiding the second mounting frame 302, so that the first mounting frame 301 and the second mounting frame 302 can be precisely aligned, avoiding the offset of the two internal correction modules 304, thereby improving the correction effect on the crankshaft workpiece.

[0039] Working principle: During use, place the crankshaft that needs to be corrected after forging into the top inner cavity of the correction module 304 inside the first mounting frame 301. Then, start the first hydraulic cylinder 12 to drive the second U-shaped frame 201 above to move downward. The second U-shaped frame 201 will drive the upper correction module 304 and the lower correction module 304 to merge. At this time, the deformed position of the crankshaft cannot completely fit with the inner cavity of the correction module 304. Since the correction module 304, the first mounting frame 301, and the second mounting frame 302 are movably connected through the movable groove 303 and the movable block 306, the corresponding position of the correction module 304 will be lifted inside the first mounting frame 301 and the second mounting frame 302. Then, start the second hydraulic cylinder 202 in the second U-shaped frame 201. The second hydraulic cylinder 202 will push the pressing plate 203 to squeeze the correction module 304 to move into the first mounting frame 301 and the second mounting frame 302. When the correction module 304 is flush with the outer surfaces of the first mounting frame 301 and the second mounting frame 302, the surface of the crankshaft workpiece will closely fit with the correction die cavity on the surface, so that the shape is squeezed into a standard state, thus completing the correction operation, avoiding the adverse effects of the deformation of the crankshaft after forging on the mechanical properties and service life of the crankshaft. During use, when the upper second mounting frame 302 approaches the first mounting frame 301 under the action of the first hydraulic cylinder 12, the second mounting frame 302 will slide on the surface of the guide rod 305, playing a role in guiding the second mounting frame 302, so that the first mounting frame 301 and the second mounting frame 302 can be accurately aligned, avoiding the deviation of the two inner correction modules 304 and improving the correction effect of the crankshaft workpiece.

[0040] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. A crankshaft forging correction device, comprising a first U-shaped frame (1), characterized in that: A correction and positioning mechanism (3) is arranged on the inner side of the first U-shaped frame (1), and extrusion correction mechanisms (2) are symmetrically arranged on the top and bottom of the correction and positioning mechanism (3); The correction and positioning mechanism (3) comprises a first installation frame (301) and a second installation frame (302), wherein correction modules (304) are arranged between the inner surface walls of the first installation frame (301) and the second installation frame (302), and the two correction modules (304) are arranged symmetrically; The two extrusion correction mechanisms (2) each comprise a second U-shaped frame (201), a plurality of second hydraulic cylinders (202) are installed on the inner surface walls on opposite sides of the two second U-shaped frames (201), and a pressing plate (203) is installed on the telescopic ends of the second hydraulic cylinders (202).

2. The crankshaft forging correction device according to claim 1, characterized in that: The two second U-shaped frames (201) are respectively fixedly connected to the outer surfaces of the first installation frame (301) and the second installation frame (302) on opposite sides, and the plurality of pressing plates (203) and the correction module (304) cooperate with each other.

3. The crankshaft forging correction device according to claim 2, characterized in that: The inner walls on both sides of the first installation frame (301) and the second installation frame (302) are provided with a plurality of movable grooves (303), the inner walls of the movable grooves (303) are slidably connected with movable blocks (306), and the movable blocks (306) are fixedly connected to the correction module (304).

4. The crankshaft forging correction device according to claim 3, characterized in that: A connection block (11) is symmetrically and fixedly connected to the inner wall of the first U-shaped frame (1) at a position close to the bottom, and the outer surfaces of the two opposite sides of the two connection blocks (11) are respectively fixedly connected to the outer surfaces of both sides of the first installation frame (301).

5. The crankshaft forging correction device according to claim 4, characterized in that: A first hydraulic cylinder (12) is fixedly mounted on the top of the first U-shaped frame (1); a telescopic end of the first hydraulic cylinder (12) slides through the top of the first U-shaped frame (1) and extends downward; and a bottom end of the first hydraulic cylinder (12) is connected to the top of one of the second U-shaped frames (201).

6. The crankshaft forging correction device according to claim 5, characterized in that: A damper (308) and a spring (307) are connected between the movable groove (303) and the movable block (306), and the spring (307) is sleeved on the outside of the damper (308).

7. The crankshaft forging correction device according to claim 6, characterized in that: Guide rods (305) are fixedly connected to the top of the first installation frame (301) near the four corners, and the outer surface of the guide rods (305) slides through the bottom of the second installation frame (302) and extends upward.

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