Roller press for machining crankshaft

Abstract

The utility model relates to the technical field of crankshaft machining, in particular to a roller press for machining crankshafts, which comprises a machining box, a machining cavity is formed in the machining box, two sliding grooves are formed in the machining cavity, a supporting mechanism is arranged on the sliding grooves, and the supporting mechanism comprises a supporting plate which is in sliding fit with the sliding grooves. A telescopic T-shaped rod is fixed to the top of the supporting plate. Through the structural design of the supporting plate, the T-shaped rod and the bearing bush, a worker only needs to stably place the two ends of the crankshaft on the bearing bush, the crankshaft can be lifted through the supporting mechanism, the working mode that the worker needs to lift the crankshaft with the two hands in traditional operation is changed, physical output of the worker is greatly reduced, and labor fatigue of the worker is relieved; the crankshaft position deviation caused by human factors is effectively avoided, people do not need to lift the crankshaft and operate the clamping mechanism at the same time, the operation process is effectively simplified, and the operation difficulty is reduced.

Description

Technical Field

[0001] This application relates to the field of crankshaft machining technology, and in particular to a rolling mill for machining crankshafts. Background Technology

[0002] The crankshaft is one of the most important parts of an engine, and its mechanical properties directly determine the engine's lifespan. Crankshaft failure generally manifests in two ways: journal wear and fatigue fracture. For fatigue fracture, journal fillet rolling is generally used to improve its fatigue strength. The rolling head used in the fillet rolling process usually consists of two rollers of the same size rolling both fillets simultaneously, with their axial forces canceling each other out. When machining the crankshaft, a rolling mill is required to perform the rolling treatment.

[0003] A search revealed a Chinese patent (publication number: CN220592152U) that discloses a crankshaft small end journal fillet rolling processing equipment, which enables quick crankshaft installation, facilitates crankshaft installation, and allows for easy disassembly and assembly of the balance sleeve and center, thus enabling convenient replacement of the balance sleeve.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following defects in this patent:

[0005] Traditional crankshaft rolling machines require workers to lift the crankshaft with both hands and accurately place it in the machining groove during installation. At the same time, workers must keep the crankshaft horizontal at all times to ensure that the subsequent balance sleeve and center accurately clamp and fix the crankshaft, which increases the labor intensity of workers and seriously affects their work experience.

[0006] Therefore, in response to the above problems, the applicant provides a rolling mill for machining crankshafts. Utility Model Content

[0007] In order to solve the problems mentioned in the background art, this application provides a rolling mill for processing crankshafts.

[0008] This application provides a rolling mill for machining crankshafts, which adopts the following technical solution:

[0009] A rolling mill for machining crankshafts includes a machining box having a machining cavity, and two sliding grooves having a support mechanism on each sliding groove.

[0010] The support mechanism includes a support plate that slides on the slide groove. A telescopic T-shaped rod is fixed to the top of the support plate. A bearing is provided on the top of the T-shaped rod. A positioning mechanism is fixed to the support plate. Limiting blocks are fixed on both sides of the slide groove in the processing cavity. Limiting holes are provided on the limiting blocks. The positioning mechanism cooperates with the limiting holes.

[0011] Optionally, a fixing frame is fixed to the top of the processing box, and a cylinder is fixed to the bottom of the fixing frame. The telescopic end of the cylinder faces downward and is fixedly connected to a rolling body.

[0012] Optionally, the processing box is provided with a clamping mechanism, and the two clamping ends of the clamping mechanism extend into the processing cavity.

[0013] Optionally, the positioning mechanism includes a fixing block fixed to the support plate, the fixing block having an installation groove, and both sides of the outer wall of the positioning mechanism having through holes communicating with the installation groove.

[0014] Optionally, two movable blocks are slidably installed in the mounting groove. The two movable blocks are connected by a spring, and a positioning rod is fixed to one end of each of the two movable blocks. The positioning rod passes through the through hole and cooperates with the limiting hole.

[0015] Optionally, a toggle block is fixed to the top of the movable block, and a cover plate is installed on the top of the fixed block. The cover plate has a pair of movable slots that communicate with each other. The toggle block passes through the movable slot and slides in cooperation with the movable slot.

[0016] Optionally, the T-shaped rod includes a first cylinder fixed to a support plate, the top of the first cylinder having a circular groove, a second cylinder being fitted into the circular groove with clearance, and a hand-tightening bolt being threaded onto the outer wall of the first cylinder, one end of the hand-tightening bolt extending into the second cylinder.

[0017] In summary, this application includes the following beneficial technical effects:

[0018] 1. This utility model, through the structural design of support plate, T-shaped rod and bearing shell, allows workers to simply place both ends of the crankshaft stably on the bearing shell, and then use the support mechanism to lift the crankshaft. This changes the traditional working method where workers need to lift the crankshaft with both hands, greatly reducing the physical exertion of workers, alleviating labor fatigue, and effectively avoiding crankshaft position deviation caused by human factors. Workers do not need to pay attention to the operation of the clamping mechanism while lifting the crankshaft, which effectively simplifies the operation process and reduces the difficulty of operation.

[0019] 2. This utility model, through the structural design of a sliding groove, a fixing block, a positioning rod, a limiting block, and a limiting hole, can quickly adjust the position of the T-shaped rod according to the different lengths of the crankshaft, and simultaneously quickly achieve the positioning processing of the adjusted T-shaped rod, meeting the support requirements of crankshafts of different specifications, and improving the versatility of the equipment and the flexibility of production. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the rolling mill in the embodiments of this application;

[0021] Figure 2 This is a schematic diagram of the top structure of the processing box in an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the assembly structure of the support mechanism in the embodiments of this application;

[0023] Figure 4 This is a schematic diagram of the assembly structure of the bearing bush in an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the positioning mechanism in the embodiments of this application;

[0025] Figure 6 This is a schematic diagram of the structure of the limiting block in an embodiment of this application.

[0026] Reference numerals: 1. Machining box; 2. Machining cavity; 201. Slide groove; 3. Support mechanism; 4. Support plate; 5. T-shaped rod; 6. Bearing bush; 7. Positioning mechanism; 701. Fixing block; 702. Mounting groove; 703. Through hole; 704. Moving block; 705. Positioning rod; 706. Spring; 707. Pulling block; 708. Cover plate; 709. Movable groove; 8. Limiting block; 801. Limiting hole; 9. Clamping mechanism; 10. Fixing frame. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0028] This application discloses a rolling mill for machining crankshafts.

[0029] like Figure 1-6 As shown, a rolling mill for machining crankshafts includes a machining box 1 with a machining cavity 2. The machining cavity 2 has two grooves 201, and a support mechanism 3 is provided on each groove 201. (See also...) Figure 1 , Figure 2 and Figure 3 The top of the processing box 1 is fixed with a fixed frame 10, and the bottom of the fixed frame 10 is fixed with a cylinder. There are several cylinders. The telescopic end of the cylinder faces downward and is fixedly connected to a rolling body. When the cylinder works, the extension and retraction of the piston rod drives the rolling body to move up and down, and performs rolling processing on the crankshaft placed on the support mechanism 3.

[0030] The machining box 1 is provided with a clamping mechanism 9. The two clamping ends of the clamping mechanism 9 are inserted into the machining cavity 2. Furthermore, the composition structure of the clamping mechanism 9 used to fix and clamp the two ends of the crankshaft is the same as the relevant composition structure of the fixing component used to fix the crankshaft in the prior art, and will not be described in detail here.

[0031] The support mechanism 3 includes a support plate 4 that slides on the slide groove 201. A telescopic T-shaped rod 5 is fixed to the top of the support plate 4, and a bearing 6 is provided on the top of the T-shaped rod 5. A positioning mechanism 7 is fixed on the support plate 4. Limiting blocks 8 are fixed on both sides of the machining cavity 2 located on the slide groove 201. Limiting holes 801 are formed on the limiting blocks 8. The positioning mechanism 7 cooperates with the limiting holes 801. Please refer to [link / reference]. Figure 3 , Figure 4 and Figure 5 The positioning mechanism 7 includes a fixed block 701 fixed on the support plate 4. The fixed block 701 has an installation groove 702. Both sides of the outer wall of the positioning mechanism 7 have through holes 703 that communicate with the installation groove 702. Two movable blocks 704 are slidably installed in the installation groove 702. The two movable blocks 704 are connected by a spring 706. One end of each of the two movable blocks 704 is fixed with a positioning rod 705. The positioning rod 705 passes through the through hole 703 and engages with the limiting hole 801. A toggle block 707 is fixed to the top of the movable block 704. A cover plate 708 is bolted to the top of the fixed block 701. A pair of movable grooves 709 communicating with the installation groove 702 are opened on the cover plate 708. The toggle block 707 passes through the movable groove 709 and slidably engages with the movable groove 709. The cover plate 708 protects the components in the installation groove 702, and the movable grooves 709 on it provide guidance for the movement of the toggle block 707.

[0032] Please see Figure 4 The T-shaped rod 5 includes a first cylinder fixed on the support plate 4. The top of the first cylinder has a circular groove, and a second cylinder is fitted into the groove with clearance. The top of the second cylinder has a mounting block with an arc-shaped groove, and a bearing is installed in the arc-shaped groove. The second cylinder can move up and down in the circular groove to adjust the height of the T-shaped rod 5. A hand-tightening bolt is threaded on the outer wall of the first cylinder, and one end of the hand-tightening bolt extends into the second cylinder. Furthermore, the first cylinder has a threaded hole that connects to the circular groove, and the outer wall of the second cylinder has multiple vertical circular holes. When it is necessary to fix the position of the second cylinder, tighten the hand-tightening bolt so that one end extends into the circular hole.

[0033] The implementation principle of a crankshaft rolling machine according to an embodiment of this application is as follows: During use, the operator first places both ends of the crankshaft to be processed on two bearing bushes 6. Then, the clamping mechanism 9 is operated to fix and limit the ends of the crankshaft. The crankshaft is then rolled. When it is necessary to adjust the position of the bearing bushes 6 according to the crankshaft size and to avoid interference with the support mechanism 3 when the clamping mechanism 9 is holding the crankshaft, the shift block 707 is pushed simultaneously in the opposite direction. The shift block 707 is in the movable groove 709. When moving, the moving block 704 will move within the mounting slot 702. The two moving blocks 704 move closer to each other and simultaneously compress the spring 706, which also causes the positioning rod 705 to extend out of the limiting hole 801. Then, the operator can push the support plate 4 on the slide 201 to a position that can support the crankshaft end. After releasing the lever 707, the moving block 704 will be pushed to move under the reset of the spring 706, thereby causing the positioning rod 705 to extend into the corresponding limiting hole 801 to complete the fixation of the support plate 4.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rolling mill for machining crankshafts, characterized in that: It includes a processing box (1), the processing box (1) has a processing cavity (2), the processing cavity (2) is provided with a sliding groove (201), there are two sliding grooves (201), and a support mechanism (3) is provided on the sliding groove (201); The support mechanism (3) includes a support plate (4) that slides on the slide groove (201). A telescopic T-shaped rod (5) is fixed on the top of the support plate (4). A bearing (6) is provided on the top of the T-shaped rod (5). A positioning mechanism (7) is fixed on the support plate (4). Limiting blocks (8) are fixed on both sides of the processing cavity (2) located on the slide groove (201). Limiting holes (801) are opened on the limiting blocks (8). The positioning mechanism (7) cooperates with the limiting holes (801).

2. A rolling mill for machining crankshafts according to claim 1, characterized in that: The top of the processing box (1) is fixed with a fixing frame (10), and the bottom of the fixing frame (10) is fixed with a cylinder. The telescopic end of the cylinder faces downward and is fixedly connected with a rolling body.

3. A rolling mill for machining crankshafts according to claim 2, characterized in that: The processing box (1) is provided with a clamping mechanism (9), and the two clamping ends of the clamping mechanism (9) are inserted into the processing cavity (2).

4. A rolling mill for machining crankshafts according to claim 1, characterized in that: The positioning mechanism (7) includes a fixing block (701) fixed on the support plate (4), the fixing block (701) is provided with an installation groove (702), and the two sides of the outer wall of the positioning mechanism (7) are provided with through holes (703) that connect to the installation groove (702).

5. A rolling mill for machining crankshafts according to claim 4, characterized in that: Two movable blocks (704) are slidably installed in the mounting groove (702). The two movable blocks (704) are connected by a spring (706). One end of each of the two movable blocks (704) is fixed with a positioning rod (705). The positioning rod (705) passes through the through hole (703) and cooperates with the limiting hole (801).

6. A rolling mill for machining crankshafts according to claim 5, characterized in that: The top of the movable block (704) is fixed with a lever (707), and the top of the fixed block (701) is fitted with a cover plate (708). The cover plate (708) has a pair of movable slots (709) that communicate with the mounting slots (702). The lever (707) passes through the movable slots (709) and slides with the movable slots (709).

7. A rolling mill for machining crankshafts according to claim 1, characterized in that: The T-shaped rod (5) includes a first cylinder fixed on a support plate (4), a circular groove is provided at the top of the first cylinder, a second cylinder is fitted in the circular groove with clearance, and a hand-tightening bolt is threaded on the outer wall of the first cylinder, one end of the hand-tightening bolt extends into the second cylinder.

Images