Surface quenching equipment for marine crankshaft

Abstract

The utility model discloses surface quenching equipment for a marine crankshaft, which relates to the technical field of metal heat treatment, and comprises a rack, a three-axis moving mechanism is arranged on the rack, an adjustable heating mechanism is arranged on the three-axis moving mechanism, the adjustable heating mechanism comprises a mounting plate I, the mounting plate I is fixedly connected to the bottom end of the three-axis moving mechanism, and the mounting plate II is fixedly connected to the bottom end of the three-axis moving mechanism. The bottom end of the first mounting plate is fixedly connected with a rotating disc, the top end of the rotating disc is fixedly connected with a first motor, the bottom end of the rotating disc is rotatably connected with a second mounting plate, the top end of the second mounting plate is fixedly connected to the output end of the first motor, and the front end of the second mounting plate is fixedly connected with a connecting plate. The device has the beneficial effects that by arranging the adjustable heating mechanism, the induction heating plate moves along the angle of the crankshaft, uniform heating of the surface of the crankshaft is achieved, meanwhile, the cooling component is directly arranged at the rear end, the cooling speed is high, uniform cooling can be achieved, and quenching deformation and cracks are reduced.

Description

Technical Field

[0001] This utility model relates to the field of metal heat treatment technology, and in particular to a surface quenching device for marine crankshafts. Background Technology

[0002] As a core component of marine engines, the surface quality of marine crankshafts directly affects engine performance and lifespan. Surface hardening is an important process for improving the surface hardness, wear resistance, and fatigue strength of crankshafts.

[0003] For example, patent document CN104831019A discloses a surface hardening device for marine crankshafts. This device is equipped with left and right eccentric clamps. After hardening one journal, the rotation center is supported by a change of clamps to ensure that the other journal is located at the center of the sensor. The hardening carriage on the moving worktable moves the sensor to the journal to be hardened. By combining the movement of the tailstock and the movement of the hardening carriage, all journals can be hardened.

[0004] Current manufacturing processes do not adequately consider the large size and complex shape of crankshafts. Because ordinary induction coils cannot fully cover their curved surfaces, the uniformity of the hardened layer is affected. Furthermore, poor coordination between the cooling system and the heating zone can easily lead to the formation of soft hardened bands or crankshaft deformation. Utility Model Content

[0005] The purpose of this invention is to provide a surface hardening device for marine crankshafts in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A surface hardening device for marine crankshafts includes a frame, a three-axis moving mechanism mounted on the frame, and an adjustable heating mechanism mounted on the three-axis moving mechanism. The adjustable heating mechanism includes a mounting plate one, which is fixedly connected to the bottom of the three-axis moving mechanism. A turntable is fixedly connected to the bottom of the mounting plate one, and a motor one is fixedly connected to the top of the turntable. A mounting plate two is rotatably connected to the bottom of the turntable, and the top of the mounting plate two is fixedly connected to the output end of the motor one. A connecting plate is fixedly connected to the front end of the mounting plate two, and a cooling component is fixedly connected to the connecting plate. A linear module one is fixedly connected to the bottom of the mounting plate two, and multiple induction heating plates are fixedly connected to the bottom of the linear module one. A motor two is fixedly connected to one end of the linear module one, and the power input end of the linear module one is fixedly connected to the output end of the motor two.

[0008] Preferably, the frame includes a base plate, a support plate is fixedly connected to the base plate, and a chuck is rotatably connected to the support plate.

[0009] Preferably, the three-axis moving mechanism includes multiple sliding plates, which are slidably connected to the top of the base plate. A gantry is fixedly connected to one side of the sliding plate, and multiple mounting plates are fixedly connected to the inner sides of the front and rear ends of the gantry. A linear module 2 is fixedly connected to one end of the mounting plate 3, and a linear module 3 is fixedly connected to the linear module 2. A mounting plate 1 is fixedly connected to the bottom end of the linear module 3. A synchronous belt component is connected to the linear module 2, and the other end of the synchronous belt component is connected to another linear module 2.

[0010] Preferably, the cooling component is equipped with multiple nozzles.

[0011] Preferably, the top of the base plate is provided with sliding grooves on both the front and rear sides.

[0012] Preferably, the nozzles on the cooling components are all angled toward the crankshaft to be quenched.

[0013] The beneficial effects are as follows: by setting an adjustable heating mechanism, the induction heating plate can be moved along the angle of the crankshaft to achieve uniform heating of the crankshaft surface. At the same time, a cooling component is directly set at the rear end to achieve fast cooling and uniform cooling, thereby reducing quenching deformation and cracks.

[0014] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is an isometric drawing of a surface hardening device for a marine crankshaft as described in this utility model;

[0017] Figure 2 This is an isometric view of the frame of the surface hardening equipment for marine crankshafts described in this utility model;

[0018] Figure 3 This is an isometric view of the adjustable heating mechanism of the surface hardening equipment for marine crankshafts described in this utility model;

[0019] Figure 4 This is an isometric sectional view of the adjustable heating mechanism of the surface hardening equipment for a marine crankshaft described in this utility model.

[0020] Figure 5 This is an isometric view of the three-axis moving mechanism of the surface hardening equipment for marine crankshafts described in this utility model;

[0021] Figure 6This is an isometric view of the linear module three of the surface hardening equipment for a marine crankshaft described in this utility model.

[0022] The reference numerals in the attached drawings are explained as follows: 101, base plate; 102, support plate; 103, chuck; 201, mounting plate one; 202, turntable; 203, mounting plate two; 204, connecting plate; 205, cooling component; 206, induction heating plate; 207, linear module one; 208, motor one; 209, motor two; 301, sliding plate; 302, gantry frame; 303, mounting plate three; 304, linear module two; 305, linear module three; 306, synchronous belt component. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] like Figures 1-6As shown, a surface hardening device for marine crankshafts includes a frame with a three-axis moving mechanism mounted on it. An adjustable heating mechanism is mounted on the three-axis moving mechanism. The adjustable heating mechanism includes a mounting plate 201, which is bolted to the bottom of the three-axis moving mechanism. A turntable 202 is bolted to the bottom of the mounting plate 201. A motor 208 is bolted to the top of the turntable 202. A mounting plate 203 is rotatably connected to the bottom of the turntable 202. The top of the mounting plate 203 is connected to the output end of the motor 208 via a coupling. A connecting plate 204 is welded to the front end of the mounting plate 203. Plate 204 is bolted to a cooling component 205. The bottom of mounting plate 203 is bolted to a linear module 207. The bottom of linear module 207 is bolted to multiple induction heating plates 206. One end of linear module 207 is bolted to a motor 209. The power input end of linear module 207 is connected to the output end of motor 209 via a coupling. Linear module 207 includes two motor mounting plates. Multiple optical shafts are connected to the motor mounting plates via screws. A bidirectional lead screw is rotatably connected to the motor mounting plates. Two sliders are threaded onto the bidirectional lead screw. The sliders and optical shafts are slidably connected.

[0027] The frame includes a base plate 101, on which a support plate 102 is bolted. A chuck 103 is rotatably connected to the support plate 102, and the chuck 103 can clamp both ends of the crankshaft.

[0028] The three-axis moving mechanism includes multiple sliding plates 301, which are slidably connected to the top of the base plate 101. A gantry frame 302 is welded to one side of the sliding plate 301. Multiple mounting plates 303 are bolted to the inner sides of the front and rear ends of the gantry frame 302. A linear module 2 304 is bolted to one end of the mounting plate 303. A linear module 3 305 is bolted to the linear module 2 304. A mounting plate 201 is bolted to the bottom end of the linear module 3 305. A synchronous belt component 306 is connected to the linear module 2 304. The other end of the synchronous belt component 306 is connected to another linear module 2 304. The linear module 2 304 includes two motor mounting plates, which are connected to each other. Multiple optical axes are connected by screws. Lead screws are rotatably connected to two motor mounting plates. Slider blocks are threaded onto the lead screws and slidably connected to the optical axes. Linear module 305 includes two motor mounting plates, with multiple optical axes connected to them by screws. Lead screws are rotatably connected to the two motor mounting plates, with sliders threaded onto the lead screws and slidably connected to the optical axes. The motor mounting plates of linear module 305 are bolted to the sliders of linear module 2 304. Synchronous belt component 306 includes two pulleys and a synchronous belt. The pulleys on synchronous belt component 306 are keyed to the lead screws of linear module 2 304. The lead screw at the upper end of linear module 2 304 moves synchronously through synchronous belt component 306.

[0029] The cooling component 205 is equipped with multiple nozzles, and the cooling rate is increased by increasing the number of nozzles.

[0030] The top and front and rear sides of the base plate 101 are provided with sliding grooves, which allow the sliding plate 301 to slide smoothly on the support plate 102.

[0031] The nozzles on the cooling component 205 are all angled toward the crankshaft to be quenched, and the nozzles being oriented toward the crankshaft to be quenched can accelerate the quenching speed.

[0032] Working principle: First, the three-axis moving mechanism is moved to one end of the frame. When the crankshaft is mounted on the chuck 103, the three-axis moving mechanism is activated. Mounting plate 303 drives linear module 305 to its highest position. Linear module 305 is equipped with an adjustable heating mechanism. When linear module 305 is raised, the adjustable heating mechanism is also raised synchronously. The adjustable heating mechanism moves according to the shape of the crankshaft. When processing the crankshaft, linear module 204 descends, driving linear module 305 to descend as well. The descent of linear module 305 brings the adjustable heating mechanism down with it, ensuring that the induction heating plate 206 in the adjustable heating mechanism can fully heat the main journal of the crankshaft. Motor 209 is activated, driving the bidirectional lead screw on linear module 1 207 to rotate. The rotation of the bidirectional lead screw drives the slider to move. The slider is fixedly connected to the induction heating plate 206. The rotation of the bidirectional lead screw drives the slider to move, and at the same time, it also drives the induction heating plate 206. The heating plate 206 moves, adjusting the distance between the induction heating plate 206 and the crankshaft to ensure the thermal efficiency of induction heating. After heating, the cooling component 205 quickly sprays out condenser to quench the heated part of the crankshaft. After the main journal is quenched, the connecting rod journal is quenched. At this time, the linear module 2 304 is stationary, the motor 1 208 starts to drive the mounting plate 2 203 to rotate, and at the same time, the motor 2 209 starts to rotate, driving the linear module 1 207 to start moving. The movement of the linear module 1 207 drives the induction heating plate 206 to move, and the sliding plate 301 also moves synchronously, so that the adjustable heating mechanism always moves along the angle of the crankshaft to ensure that it will not collide with the crankshaft. After the turn is completed, the connecting rod journal is quenched. There is an angle between the connecting rod journals. After a set of connecting rod journals is quenched, the chuck 103 rotates, so that the next set of connecting rod journals is in a position parallel to the base plate 101, and then the quenching continues.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A surface hardening apparatus for marine crankshafts, comprising a frame, wherein a three-axis moving mechanism is mounted on the frame, and an adjustable heating mechanism is mounted on the three-axis moving mechanism, characterized in that: The adjustable heating mechanism includes a mounting plate one (201), which is fixedly connected to the bottom end of the three-axis moving mechanism. A turntable (202) is fixedly connected to the bottom end of the mounting plate one (201), and a motor one (208) is fixedly connected to the top end of the turntable (202). A mounting plate two (203) is rotatably connected to the bottom end of the turntable (202), and the top end of the mounting plate two (203) is fixedly connected to the output end of the motor one (208). A connecting plate (204) is fixedly connected to the front end, and a cooling component (205) is fixedly connected to the connecting plate (204). A linear module (207) is fixedly connected to the bottom end of the mounting plate (203). Multiple induction heating plates (206) are fixedly connected to the bottom end of the linear module (207). A motor (209) is fixedly connected to one end of the linear module (207). The power input end of the linear module (207) is fixedly connected to the output end of the motor (209).

2. The surface hardening equipment for marine crankshafts according to claim 1, characterized in that: The frame includes a base plate (101), a support plate (102) is fixedly connected to the base plate (101), and a chuck (103) is rotatably connected to the support plate (102).

3. The surface hardening equipment for marine crankshafts according to claim 2, characterized in that: The three-axis moving mechanism includes multiple sliding plates (301), which are slidably connected to the top of the base plate (101). A gantry frame (302) is fixedly connected to one side of the sliding plate (301). Multiple mounting plates (303) are fixedly connected to the inner sides of the front and rear ends of the gantry frame (302). A linear module (304) is fixedly connected to one end of the mounting plate (303). A linear module (305) is fixedly connected to the linear module (304). A mounting plate (201) is fixedly connected to the bottom end of the linear module (305). A synchronous belt component (306) is connected to the linear module (304). The other end of the synchronous belt component (306) is connected to another linear module (304).

4. The surface hardening equipment for marine crankshafts according to claim 1, characterized in that: The cooling component (205) is equipped with multiple nozzles.

5. The surface hardening equipment for marine crankshafts according to claim 2, characterized in that: The bottom plate (101) has sliding grooves on the front and rear sides of its top.

6. The surface hardening equipment for marine crankshafts according to claim 4, characterized in that: The nozzles on the cooling component (205) are all angled toward the crankshaft to be quenched.

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