Residual stress reduction device for free forge piece

Abstract

The utility model belongs to the technical field of residual stress reduction, and particularly relates to a free forging residual stress reduction device. Comprising a stress reduction pool, and a free forging placing net cage is arranged on the inner side of the stress reduction pool. Through the arrangement of the sliding groove, the fixing frame, the fixing plate, the groove, the driving motor, the rotating disc, the protruding block and the sliding block, the free forge piece containing net cage immersed in cold water on the inner side of the stress reduction pool can be driven to move back and forth in the horizontal direction, and therefore the cold water on the inner side of the stress reduction pool can be driven to flow; the free forgings on the inner side of the free forgings placing net cage are cooled more evenly, residual stress in the free forgings is reduced, the free forgings on the inner side of the free forgings placing net cage can shake horizontally, and the poor cooling effect of the contact position of the free forgings and the free forgings placing net cage is avoided. And further, the residual stress in the free forge piece can be further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to residual stress reduction technical field, concretely is a kind of free forging residual stress reduction device. BACKGROUND

[0002] Free forging residual stress reduction device is a kind of equipment for reducing or eliminating residual stress formed in the production process of free forging (such as metal forging piece). These residual stresses may be caused by uneven heating, cooling, deformation and other factors during forging process, and if not eliminated or reduced, may cause deformation, cracking or reduce its mechanical properties of forging during subsequent processing and use, so it needs to be processed by specific equipment. During forging process, metal material usually goes through the following steps: 1, heating: metal is heated to a certain temperature, ready for forging. 2, deformation: forging is plastically deformed in the die under external force, changing its shape. 3, cooling: after deformation, forging is usually cooled in air or water cooling environment.

[0003] Due to uneven stress of each part of metal material during forging process, different degrees of residual stress will be generated inside forging. These residual stresses may affect the dimensional stability, surface quality, mechanical properties and subsequent processing difficulty of forging. Therefore, we propose a kind of free forging residual stress reduction device to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies of prior art, the utility model provides a kind of free forging residual stress reduction device, solves the problems raised in the above background technology.

[0005] The utility model discloses a kind of free forging residual stress reduction devices to achieve the above purposes specifically using the following technical solutions:

[0006] A kind of free forging residual stress reduction device, including stress reduction pool, the inside of stress reduction pool is provided with free forging placement net cage, the upper of free forging placement net cage is provided with residual stress reduction component, the residual stress reduction component is used to drive free forging placement net cage to lift, and can drive free forging placement net cage to move back and forth in horizontal direction.

[0007] Further, the residual stress reduction component includes the U-shaped frame fixedly arranged on the upper end surface of stress reduction pool and the sliding slot opened on the free forging placement net cage, the sliding slot is provided with four, the upper end surface of the U-shaped frame is fixedly provided with air cylinder, the output end of the air cylinder passes through the U-shaped frame, and the output end of the air cylinder is fixedly provided with connecting frame, four sliding blocks are fixedly arranged on the connecting frame, four sliding blocks are respectively corresponding to the position of four sliding slots, and four sliding blocks are respectively slidably arranged in four sliding slots.

[0008] Further, the lower part of the connecting frame is provided with a fixing frame, the fixing frame is fixedly connected with the free forging placing net box, the upper end surface of the fixing frame is fixedly provided with a fixing plate, and the upper end surface of the fixing plate is provided with a groove.

[0009] Further, the lower end surface of the connecting frame is fixedly provided with a driving motor, the output end of the driving motor is fixedly provided with a rotating disc, the lower end surface of the rotating disc is fixedly provided with a protruding block, and one end of the protruding block on the rotating disc is inserted into the groove on the fixing plate.

[0010] Further, the stress reduction water pool is provided with a water inlet pipe, the inner bottom end of the stress reduction water pool is fixedly provided with a water spraying pipe, and one end of the water inlet pipe penetrates through the stress reduction water pool and is connected with the water spraying pipe in the stress reduction water pool.

[0011] Further, the upper end surface of the water spraying pipe is fixedly provided with a plurality of water spraying heads, the plurality of water spraying heads are located below the free forging placing net box, and the stress reduction water pool is provided with a water overflow port.

[0012] Further, the size of the sliding block is matched with the size of the sliding groove, and the size of the groove is matched with the size of the protruding block.

[0013] Compared with the prior art, the free forging residual stress reduction device has the following beneficial effects:

[0014] The sliding groove, the cylinder, the connecting frame and the sliding block are arranged to drive the free forging placing net box to ascend and descend, so that the residual stress reduction of the free forging is more convenient, simple and efficient, the sliding groove, the fixing frame, the fixing plate, the groove, the driving motor, the rotating disc, the protruding block and the sliding block are arranged to drive the free forging placing net box immersed in the cold water in the stress reduction water pool to move back and forth in the horizontal direction, so that the flow of the cold water in the stress reduction water pool is driven, the cooling of the free forging in the free forging placing net box is more uniform, the residual stress in the free forging is reduced, the free forging in the free forging placing net box is horizontally shaken, the poor cooling effect of the contact between the free forging and the free forging placing net box is avoided, and the residual stress in the free forging is further reduced, so that the problems of the size stability, the surface quality, the mechanical properties and the subsequent processing difficulty of the free forging caused by the residual stress in the free forging are effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a first perspective view of the overall structure of the utility model;

[0016] Figure 2 It is a second perspective view of the overall structure of the utility model;

[0017] Figure 3 Figure 3 is a perspective view of the residual stress reduction assembly and the free forging placement net box connection of the utility model;

[0018] Figure 4 Figure 4 is an exploded view of the connecting frame and the free forging placement net box of the utility model;

[0019] Figure 5 Figure 5 is a perspective view of the stress reduction pool of the utility model.

[0020] In the figure: 1, stress reduction pool; 2, free forging placement net box; 3, residual stress reduction assembly; 31, U-shaped frame; 32, sliding groove; 33, air cylinder; 34, connecting frame; 35, fixed frame; 36, fixed plate; 37, recess; 38, driving motor; 39, turntable; 310, protruding block; 311, sliding block; 4, water inlet pipe; 5, water spraying pipe; 6, water spraying head; 7, overflow. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model. EMBODIMENT

[0022] As shown in Figures 1-5 An embodiment of the utility model provides a free forging residual stress reduction device, which comprises a stress reduction pool 1, the inner side of the stress reduction pool 1 is provided with a free forging placement net box 2, the top of the free forging placement net box 2 is provided with a residual stress reduction assembly 3, the residual stress reduction assembly 3 is used to drive the free forging placement net box 2 to lift and can drive the free forging placement net box 2 to move back and forth in the horizontal direction.

[0023] As shown in Figure 3 and Figure 4As shown, the residual stress reduction assembly 3 includes a U-shaped frame 31 fixedly arranged on the upper end face of the stress reduction pool 1 and a sliding groove 32 opened on the free forging placing net box 2, the sliding groove 32 is provided with four, the upper end face of the U-shaped frame 31 is fixedly provided with a gas cylinder 33, the output end of the gas cylinder 33 penetrates the U-shaped frame 31, and the output end of the gas cylinder 33 is fixedly provided with a connecting frame 34, the connecting frame 34 is fixedly provided with four sliding blocks 311, the four sliding blocks 311 are respectively corresponding to the positions of the four sliding grooves 32, and the four sliding blocks 311 are respectively slidably arranged in the four sliding grooves 32. The lower side of the connecting frame 34 is provided with a fixed frame 35, the fixed frame 35 is fixedly connected with the free forging placing net box 2, the upper end face of the fixed frame 35 is fixedly provided with a fixed plate 36, and the upper end face of the fixed plate 36 is provided with a recess 37. The lower end face of the connecting frame 34 is fixedly provided with a driving motor 38, the output end of the driving motor 38 is fixedly provided with a rotating disc 39, the lower end face of the rotating disc 39 is fixedly provided with a protrusion 310, and one end of the protrusion 310 on the rotating disc 39 is inserted into the recess 37 on the fixed plate 36.

[0024] The sliding groove 32, the gas cylinder 33, the connecting frame 34 and the sliding block 311 are arranged to drive the free forging placing net box 2 to rise and fall, so that the residual stress reduction of the free forging is more convenient and efficient. The sliding groove 32, the fixed frame 35, the fixed plate 36, the recess 37, the driving motor 38, the rotating disc 39, the protrusion 310 and the sliding block 311 are arranged to drive the free forging placing net box 2 immersed in the cold water in the stress reduction pool 1 to move horizontally, which not only drives the flow of the cold water in the stress reduction pool 1, thereby making the cooling of the free forging in the free forging placing net box 2 more uniform, thereby reducing the residual stress of the free forging, but also enabling the free forging in the free forging placing net box 2 to shake horizontally, thereby avoiding poor cooling effect at the contact between the free forging and the free forging placing net box 2, and further reducing the residual stress of the free forging, thereby effectively reducing the influence of the residual stress in the free forging on the size stability, surface quality, mechanical properties and subsequent processing difficulty of the free forging.

[0025] As shown in Figure 5 The stress reduction pool 1 is provided with a water inlet pipe 4, the inside bottom end of the stress reduction pool 1 is fixedly provided with a water spraying pipe 5, one end of the water inlet pipe 4 penetrates the stress reduction pool 1 and is connected with the water spraying pipe 5 in the stress reduction pool 1. The upper end face of the water spraying pipe 5 is fixedly provided with a plurality of water spraying heads 6, the plurality of water spraying heads 6 are located below the free forging placing net box 2, and the stress reduction pool 1 is provided with a water overflow port 7. The size of the sliding block 311 is matched with the size of the sliding groove 32, and the size of the slot of the recess 37 is matched with the diameter of the protrusion 310.

[0026] The water in the stress relief water pool 1 can be continuously replaced through the water inlet pipe 4, the water spraying pipe 5, the water spraying head 6 and the overflow opening 7, so that the problem that the residual stress reduction effect of the free forging in the stress relief water pool 1 is poor due to the high water temperature in the stress relief water pool 1 can be avoided.

[0027] The utility model works as follows:

[0028] Firstly, the free forging is placed in the free forging placing net box 2, then the air cylinder 33 is started, the air cylinder 33 drives the free forging placing net box 2 to move downwards through the connecting frame 34, so that the free forging in the free forging placing net box 2 is immersed in the cold water in the stress relief water pool 1, then the driving motor 38 is started, the starting of the driving motor 38 drives the rotating disc 39 to rotate, the rotating disc 39 drives the protruding block 310 to rotate, the protruding block 310 drives the free forging placing net box 2 to move horizontally and reciprocally along the sliding groove 32 through the fixing frame 35, the fixing plate 36 and the recess 37, the free forging immersed in the stress relief water pool 1 and the free forging moving horizontally and reciprocally in the stress relief water pool 1 reduce the residual stress of the free forging; while the free forging in the free forging placing net box 2 reduces the residual stress, the cold water in the water source is transported to the water spraying pipe 5 through the water inlet pipe 4, the water spraying pipe 5 sprays the water to the free forging in the free forging placing net box 2, the excess water in the stress relief water pool 1 is discharged from the overflow opening 7, so that the water in the stress relief water pool 1 is continuously replaced, so that the problem that the residual stress reduction effect of the free forging in the stress relief water pool 1 is poor due to the high water temperature in the stress relief water pool 1 can be avoided.

[0029] Finally, it should be noted that: the above only for the preferred embodiments of the utility model have been described in detail, although the utility model is limited, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A device for residual stress reduction of a free forging, comprising a stress reduction basin (1), characterized in that: The stress relief pool (1) is provided with a free forging placing net box (2) on the inner side, a residual stress relief assembly (3) is arranged above the free forging placing net box (2), the residual stress relief assembly (3) is used for driving the free forging placing net box (2) to lift and move back and forth in the horizontal direction.

2. A device for reducing residual stresses in a free forging according to claim 1, characterized in that: The residual stress relief assembly (3) comprises a U-shaped frame (31) fixedly arranged on the upper end surface of the stress relief pool (1) and a sliding groove (32) arranged on the free forging placing net box (2), the sliding groove (32) is provided with four, the upper end surface of the U-shaped frame (31) is fixedly provided with a gas cylinder (33), the output end of the gas cylinder (33) penetrates the U-shaped frame (31), and the output end of the gas cylinder (33) is fixedly provided with a connecting frame (34), the connecting frame (34) is fixedly provided with four sliding blocks (311), the four sliding blocks (311) are respectively corresponding to the positions of the four sliding grooves (32), and the four sliding blocks (311) are respectively slidably arranged in the four sliding grooves (32).

3. A device for reducing residual stresses in a free forging according to claim 2, characterized in that: The lower end surface of the connecting frame (34) is fixedly provided with a driving motor (38), the output end of the driving motor (38) is fixedly provided with a rotating disc (39), the lower end surface of the rotating disc (39) is fixedly provided with a protruding block (310), and one end of the protruding block (310) on the rotating disc (39) is inserted into the groove (37) on the fixed plate (36).

4. A device for reducing residual stresses in a free forging according to claim 3, characterized in that: The stress relief pool (1) is provided with a water inlet pipe (4), a water spraying pipe (5) is fixedly arranged at the bottom end in the stress relief pool (1), and one end of the water inlet pipe (4) penetrates the stress relief pool (1) and is connected with the water spraying pipe (5) in the stress relief pool (1).

5. A device for reducing residual stresses in a free forging according to claim 1, characterized in that: The upper end surface of the water spraying pipe (5) is fixedly provided with a plurality of water spraying heads (6), the plurality of water spraying heads (6) are located below the free forging placing net box (2), and the stress relief pool (1) is provided with a water overflow port (7).

6. A device for reducing residual stresses in a free forging according to claim 5, characterized in that: The size of the sliding block (311) and the sliding groove (32) is matched, and the size of the groove of the groove (37) and the diameter of the protruding block (310) are matched.

7. A device for reducing residual stresses in a free forging according to claim 4, characterized in that: ​

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