Machine tool casting pouring device with controllable stress

Abstract

The invention discloses a stress-controllable machine tool casting pouring device and belongs to the technical field of pouring devices.The stress-controllable machine tool casting pouring device comprises a lower base, an upper base fixedly connected to the top end of the lower base through stand columns and a pouring mold arranged above the upper base, trundles are arranged at the bottom end of the pouring mold, and a limiting sliding rail is fixedly connected to the top end of the upper base; the trundles walk on the inner sides of the limiting sliding rails, a penetrating opening is formed in the center of the upper base, a vibration assembly used for driving the casting mold to vibrate in a reciprocating mode is arranged at the top end of the lower base, and two symmetrically-arranged lifting motors are installed at the top end of the lower base. By arranging the rotary smelting furnace, casting molten metal needed by a large-size metal casting can be cast in the casting mold in multiple times, it is guaranteed that the casting molten metal cooled in the casting mold at a time is little, and therefore the inner side and the outer side of the casting molten metal can be evenly cooled; and therefore, it is guaranteed that the whole metal casting can be evenly cooled, and large stress is prevented from being generated in the metal casting.

Description

Technical Field

[0001] The present invention relates to the technical field of casting devices, and in particular to a casting device for machine tool castings with controllable stress. Background Art

[0002] Machine tool castings mainly include large machine tool castings, lost foam machine tool castings, resin sand machine tool castings, and machine tool bed castings. Machine tool castings are usually cast through casting devices.

[0003] In the existing casting devices during the casting process, generally, the melted metal liquid is poured into the mold at one time. After the metal liquid cools to form the required casting, demolding can be carried out to obtain the required machine tool casting. However, since the volume of machine tool castings is generally large, during the cooling process, the cooling of the casting is generally from the outside to the inside gradually, resulting in uneven overall cooling of the casting and generating large stresses inside the casting.

[0004] In addition, during the casting process of the casting, the casting port of the mold is generally open. During the casting process, if the flow rate of the metal liquid is too fast, it may cause the air inside the mold to not be discharged in time, and at the same time, the outside air is also easily mixed with the flowing metal liquid and enters the mold, resulting in pores inside the later formed casting. The pores will form discontinuous regions inside the casting, leading to stress concentration. When subjected to external forces, the stress will increase significantly around the pores, which may cause cracks. Therefore, a casting device for machine tool castings with controllable stress is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that in the prior art, machine tool castings are generally integrally cast, and due to the large volume of machine tool castings, it is easy to cause uneven cooling of the castings, resulting in large stresses inside the castings, and to propose a casting device for machine tool castings with controllable stress.

[0006] To achieve the above purpose, the present invention adopts the following technical solution:

[0007] A casting device for machine tool castings with controllable stress includes a lower base, an upper base fixedly connected to the top of the lower base through columns, and a casting mold arranged above the upper base. A through hole is opened at the center of the upper base. A vibration assembly is arranged at the top of the lower base. Two symmetrically arranged lifting motors are installed at the top of the lower base. The output end of the lifting motor is connected to a nut block through a lifting lead screw. One end of the nut block is connected to a lifting outer ring. The inner wall of the lifting outer ring is connected to a lifting inner ring. An inner electromagnetic induction heating coil is arranged inside the lifting inner ring.

[0008] Two symmetrically arranged mounting plates are connected to the top of the upper base, an annular insulation box is rotatably connected between the mounting plates via a limiting telescopic shaft, a rotary smelting furnace is rotatably arranged inside the annular insulation box, a smelting tank is provided inside the rotary smelting furnace, a casting pipe is rotatably arranged at the center of the rotary smelting furnace, and one end of the casting pipe is connected to a vacuum pump.

[0009] Preferably, casters are provided at the bottom end of the casting mold, and the top end of the upper base is connected to a limiting slide rail, and the casters run on the inner side of the limiting slide rail.

[0010] Preferably, a feed pipe is provided at the top of the casting mold, a limit ring is connected to the surface of the feed pipe, a docking sleeve is slidably connected to the surface of the feed pipe, a movable magnetic ring is connected to one end of the docking sleeve, and a limit pin is connected to the end face of the movable magnetic ring.

[0011] Preferably, a fixed magnetic ring magnetically attracted to the movable magnetic ring is connected to the surface of the casting tube near the other end, and a limiting hole is provided inside the fixed magnetic ring.

[0012] Preferably, a spiral water cavity with a spiral direction is opened inside the lifting outer ring, the top end of the lifting outer ring is connected to a water inlet pipe connected to the spiral water cavity, and the bottom end of the lifting outer ring is connected to a return pipe connected to the spiral water cavity.

[0013] Preferably, the vibration assembly includes a connecting slide rail fixedly connected to the bottom end of the casting mold, a reciprocating motor installed on the top end of the lower base, and a turntable fixedly connected to the output end of the reciprocating motor. The top end of the turntable is rotatably connected to a toggle shaft near the edge, and the toggle shaft is slidably connected to the connecting slide rail.

[0014] Preferably, the bottom end of the smelting tank is provided with an alignment port connected to the rotating tank, the side wall of the casting tube is connected with an alignment tube, and the surface of the alignment tube is provided with an electromagnetic valve.

[0015] Preferably, a feed port is provided on the side wall of the rotary smelting furnace, a feed door for sealing the feed port is hingedly connected to the side wall of the rotary smelting furnace, an outer electromagnetic induction heating coil for smelting metal is arranged inside the annular insulation box, and a plurality of handles are circumferentially distributed on one side wall of the rotary smelting furnace on which the feed door is arranged.

[0016] Preferably, an indicator mark is provided on the surface of the annular heat preservation box, and a pointer is connected to the side wall of the feed door.

[0017] Preferably, one end of the limiting telescopic shaft connected to the annular thermal insulation box is connected to a reduction gear, a driving motor is installed on the side wall of the mounting plate, and the output end of the driving motor is connected to a driving gear meshing with the reduction gear.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In this solution, by providing a rotary melting furnace, the molten casting metal required for large-volume metal castings can be cast into the casting mold in multiple times, ensuring that the amount of molten casting metal cooled inside the casting mold at one time is small. Thus, the inner and outer sides of the molten casting metal can be cooled evenly, and further ensuring that the overall metal casting can be cooled evenly, avoiding the generation of large stresses inside it.

[0020] 2. In this solution, by providing a vibration assembly and a vacuum pump, the vacuum pump can perform vacuum treatment on the casting mold. At the same time, in cooperation with the vibration assembly, the air contained in the molten casting metal cast in each batch can be discharged, avoiding the existence of bubbles inside the formed metal casting. At the same time, the vibration assembly can make the molten casting metal keep vibrating during the cooling process. Vibration can help the molten casting metal cool evenly, promote the redistribution of stress inside the casting, and release part of the residual stress, thereby reducing the risk of casting deformation or cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic three-dimensional structure diagram of a casting device for a machine tool casting with controllable stress proposed by the present invention Figure 1 ;

[0022] Figure 2 is a schematic three-dimensional structure diagram of a casting device for a machine tool casting with controllable stress proposed by the present invention Figure 2 ;

[0023] Figure 3 is Figure 2 the enlarged structural schematic diagram at A in

[0024] Figure 4 is the schematic assembly structure diagram of a casting device for a machine tool casting with controllable stress proposed by the present invention;

[0025] Figure 5 is Figure 4 the enlarged structural schematic diagram at B in

[0026] Figure 6 is the schematic assembly structure diagram of the rotary melting furnace and the annular heat preservation box in a casting device for a machine tool casting with controllable stress proposed by the present invention;

[0027] Figure 7 is the schematic cross-sectional structure diagram of the lifting outer ring and the lifting inner ring in a casting device for a machine tool casting with controllable stress proposed by the present invention.

[0028] In the figure: 1, lower base; 2, upper base; 3, lifting outer ring; 301, spiral water chamber; 4, lifting inner ring; 401, inner electromagnetic induction heating coil; 5, casting mold; 6, lifting screw rod; 7, mounting plate; 8, feed pipe; 9, annular insulation box; 901, outer electromagnetic induction heating coil; 10, rotary melting furnace; 1001, melting tank; 1002, alignment port; 1003, feed port; 11, reduction gear; 12, drive gear; 13, drive motor machine; 14, nut block; 15, lifting motor; 16, casting pipe; 17, feed door; 18, limit pin; 19, water inlet pipe; 20, return pipe; 21, connecting slide rail; 22, limit slide rail; 23, reciprocating motor; 24, turntable; 25, toggle shaft; 26, limit ring; 27, docking sleeve; 28, movable magnetic ring; 29, fixed magnetic ring; 2901, limit hole; 30, alignment tube; 31, indicator mark; 32, pointer; 33, handle; 34, vacuum pump. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Example, see Figures 1 to 7A stress-controllable machine tool casting casting device comprises a lower base 1 and an upper base 2 fixedly connected to the top of the lower base 1 through a column, and a casting mold 5 arranged above the upper base 2, a caster is arranged at the bottom end of the casting mold 5, a limited slide rail 22 is fixedly connected to the top of the upper base 2, the caster walks on the inner side of the limited slide rail 22, a through opening is opened at the center of the upper base 2, and a vibration component for driving the casting mold 5 to reciprocate is arranged at the top of the lower base 1. Further, the vibration component comprises a connecting slide rail 21 fixedly connected to the bottom end of the casting mold 5, a reciprocating motor 23 installed at the top of the lower base 1, and a turntable 24 fixedly connected to the output end of the reciprocating motor 23, and a toggle shaft 25 is rotatably connected to the top of the turntable 24 near the edge, and the toggle shaft 25 is slidably connected to the connecting slide rail 21.

[0033] It should be noted that the reciprocating motor 23 drives the turntable 24 at its output end to rotate, the turntable 24 drives the toggle shaft 25 at its top to make a circular motion, the toggle shaft 25 drives the connecting slide rail 21 to reciprocate left and right in the horizontal direction, and the connecting slide rail 21 drives the casting mold 5 connected to its top to vibrate reciprocatingly. The reciprocating vibration of the casting mold 5 can help the casting poured inside it to cool evenly. At the same time, the vibration can promote the redistribution of stress inside the casting and release some residual stress, thereby reducing the risk of deformation or cracking of the casting.

[0034] Two symmetrically arranged lifting motors 15 are installed on the top of the lower base 1, and the output end of the lifting motor 15 is fixedly connected to a lifting screw 6 rotatably connected to the upper base 2, and the surface of the lifting screw 6 is threadedly connected to a nut block 14, and one end of the nut block 14 is fixedly connected to a lifting outer ring 3 sleeved on the outside of the casting mold 5, and the inner wall of the lifting outer ring 3 is fixedly connected to a lifting inner ring 4, and the inner side of the lifting inner ring 4 is provided with an inner electromagnetic induction heating coil 401; further, a spiral water cavity 301 with a spiral direction is opened inside the lifting outer ring 3, and the top of the lifting outer ring 3 is fixedly connected to a water inlet pipe 19 connected to the spiral water cavity 301, and the bottom end of the lifting outer ring 3 is fixedly connected to a return pipe 20 connected to the spiral water cavity 301.

[0035] It should be noted that: the lifting motors 15 on both sides are turned on, and the lifting motors 15 drive the lifting screw 6 to rotate, and the nut block 14 threadedly connected to the surface of the lifting screw 6 drives the lifting outer ring 3 to move up, and the lifting outer ring 3 drives the lifting inner ring 4 to move up, thereby causing the inner electromagnetic induction heating coil 401 inside the lifting inner ring 4 to rise, so that the inner electromagnetic induction heating coil 401 rises to the upper surface of the cooled casting, heats and melts the upper surface of the casting, and facilitates connection with the next batch of subsequent castings.

[0036] A feed pipe 8 is fixedly connected to the top casting port of the casting mold 5. A limit ring 26 is fixedly connected to the surface of the feed pipe 8. A docking sleeve 27 is slidably connected to the surface of the feed pipe 8 (there is a limit sliding connection relationship between the feed pipe 8 and the docking sleeve 27, that is, the limit sleeve cannot rotate). One end of the docking sleeve 27 is fixedly connected to a movable magnetic ring 28, and a limit pin 18 is fixedly connected to the end face of the movable magnetic ring 28. A fixed magnetic ring 29 that magnetically attracts the movable magnetic ring 28 is fixedly connected to the surface of the casting pipe 16 near the other end. A limit hole 2901 adapted to the limit pin 18 is opened inside the fixed magnetic ring 29.

[0037] It should be noted that: when the rotary smelting furnace 10 drives the casting pipe 16 to rotate until it is aligned with the feed pipe 8, the fixed magnetic ring 29 on the surface of the casting pipe 16 will magnetically attract the movable magnetic ring 28 at the end face of the docking sleeve 27, causing the docking sleeve 27 to slide on the surface of the feed pipe 8 and move towards the direction of the casting pipe 16 until the movable magnetic ring 28 and the fixed magnetic ring 29 are magnetically attracted to each other, and the limit pin 18 is inserted into the limit hole 2901. At this time, the docking sleeve 27 is sleeved outside the feed port 1003, realizing the connection function between the feed pipe 8 and the casting pipe 16, facilitating the casting metal liquid inside the casting pipe 16 to enter the inside of the feed pipe 8 and then enter the inside of the casting mold 5.

[0038] It is worth noting that: after the limit pin 18 is inserted into the limit hole 2901, it can play a limiting role on the casting pipe 16, avoiding the casting pipe 16 from rotating synchronously under the action of friction during the rotation of the rotary smelting furnace 10.

[0039] Two symmetrically arranged mounting plates 7 are fixedly connected to the top of the upper base 2. A ring-shaped heat preservation box 9 is rotatably connected between the mounting plates 7 through a limit telescopic shaft. A rotary smelting furnace 10 is rotatably arranged inside the ring-shaped heat preservation box 9. A plurality of smelting grooves 1001 distributed in a circular pattern are opened inside the rotary smelting furnace 10. A rotary groove is opened at the center of the rotary smelting furnace 10. A casting pipe 16 is rotatably arranged inside the rotary groove. One end of the casting pipe 16 is connected to a vacuum pump 34. Further, a counterpoint port 1002 communicating with the rotary groove is opened at the bottom end of the smelting groove 1001. A counterpoint pipe 30 is fixedly connected to the side wall of the casting pipe 16. An electromagnetic valve is arranged on the surface of the counterpoint pipe 30. Further, a feed port 1003 is opened on the side wall of the rotary smelting furnace 10. A feed door 17 for sealing the feed port 1003 is hinged on the side wall of the rotary smelting furnace 10. An outer electromagnetic induction heating coil 901 for smelting metal is arranged inside the ring-shaped heat preservation box 9. A plurality of handles 33 are arranged in a circular pattern on the side wall of the rotary smelting furnace 10 where the feed door 17 is arranged.

[0040] It should be noted that: before casting the casting mold 5, the connection function of the feed pipe 8 and the casting pipe 16 is realized, and then the vacuum pump 34 is used in cooperation with the casting pipe 16 and the feed pipe 8 to perform vacuum pumping on the inside of the casting mold 5. This is an existing technology and will not be elaborated in detail here.

[0041] It should be noted that: the outer electromagnetic induction heating coil 901 inside the annular heat preservation box 9 can heat and melt the raw material metal inside the melting tank 1001, making the raw material metal become the casting metal liquid. The annular heat preservation box 9, in cooperation with the rotary melting furnace 10, can play a role in heat preservation and sealing for the casting metal liquid.

[0042] It should be noted that: the operator can open the feed door 17 and put the raw material metal into the melting tank 1001 through the feed port 1003.

[0043] Furthermore, an indicator 31 is provided on the surface of the annular heat preservation box 9, and a pointer 32 is fixedly connected to the side wall of the feed door 17. When the rotary melting furnace 10 rotates under the pushing action of the handle 33, when the pointer 32 on the feed door 17 aligns with the indicator 31, it indicates that the alignment port 1002 at the bottom end of the melting tank 1001 is aligned with the alignment pipe 30.

[0044] Furthermore, one end of the limit telescopic shaft connected to the annular heat preservation box 9 is fixedly connected with a reduction gear 11, and a driving motor 13 is installed on the side wall of the mounting plate 7. The output end of the driving motor 13 is fixedly connected with a driving gear 12 that meshes with the reduction gear 11.

[0045] It is worth noting that: the limit telescopic shaft is a telescopic rod structure, which is an existing technology and its specific structure will not be elaborated here.

[0046] It should be noted that: the driving motor 13 drives the driving gear 12 at its output end to rotate, the driving gear 12 drives the reduction gear 11 to rotate, the reduction gear 11 drives the annular heat preservation box 9 to rotate, and the annular heat preservation box 9 drives the rotary melting furnace 10 inside it to rotate, making the rotary melting furnace 10 in an inclined state, which is convenient for casting the casting metal liquid.

[0047] When the present invention is in use, before the casting operation, the driving motor 13 is first turned on. The driving motor 13 drives the driving gear 12 at its output end to rotate. The driving gear 12 drives the reduction gear 11 to rotate. The reduction gear 11 drives the annular heat preservation box 9 to rotate. The annular heat preservation box 9 drives the rotary melting furnace 10 inside it to rotate, so that the rotary melting furnace 10 is in an inclined state. When the rotary melting furnace 10 drives the casting pipe 16 to rotate to align with the feed pipe 8, the fixed magnetic ring 29 on the surface of the casting pipe 16 will magnetically attract the movable magnetic ring 28 at the end face of the docking sleeve 27, causing the docking sleeve 27 to slide on the surface of the feed pipe 8 and move towards the casting pipe 16 (a rubber layer is provided at the sliding connection between the docking sleeve 27 and the surface of the feed pipe 8 to ensure the sealing performance of the sliding connection). Until the movable magnetic ring 28 and the fixed magnetic ring 29 are magnetically attracted to each other, and the limit pin 18 is inserted into the limit hole 2901. At this time, the docking sleeve 27 is sleeved outside the feed port 1003, realizing the connection function between the feed pipe 8 and the casting pipe 16. Then, the vacuum pump 34 is used in cooperation with the casting pipe 16 and the feed pipe 8 to vacuum the inside of the casting mold 5;

[0048] After that, the feed door 17 is opened, and the metal raw materials are placed into the smelting tanks 1001 at various locations through the feed door 17. Then, the feed door 17 is closed, and the outer electromagnetic induction heating coil 901 inside the annular heat preservation box 9 is opened. The outer electromagnetic induction heating coil 901 is used to heat and melt the metal raw materials. After the smelting is completed, the casting molten metal is obtained, and the rotary smelting furnace 10 is driven to rotate by the handle 33 again. When the pointer 32 on the feed door 17 is aligned with the indicator mark 31, it means that the alignment port 1002 at the bottom of the smelting tank 1001 is aligned with the alignment tube 30. The solenoid valve on the alignment tube 30 is opened, so that the casting molten metal inside the smelting tank 1001 flows into the casting tube 16 through the alignment tube 30, and then enters the casting mold 5 through the feed tube 8 (the feed tube 8 and the casting tube 16 both have insulation functions to prevent the casting molten metal from cooling). At this time, the reciprocating motor 23 is turned on, and the reciprocating motor 23 drives the turntable 2 at its output end. 4 rotates, the turntable 24 drives the toggle shaft 25 at its top to make a circular motion. Since the toggle shaft 25 and the connecting slide rail 21 are in a sliding connection relationship, the toggle shaft 25 drives the connecting slide rail 21 to reciprocate left and right in the horizontal direction, and the connecting slide rail 21 drives the casting mold 5 connected to its top to vibrate reciprocatingly, and the casting mold 5 drives the feeding pipe 8 at its top to vibrate synchronously, and the feeding pipe 8 drives the casting pipe 16 and the rotary melting furnace 10 to vibrate synchronously (the surfaces of the movable magnetic ring 28 and the fixed magnetic ring 29 are both provided with a rubber layer to ensure the sealing of the contact surface after the two are magnetically attracted). The vibration will drive the casting molten metal to vibrate, so that the air inside the casting molten metal can be discharged, and at the same time, the vacuum pump 34 is turned on, so that the air discharged from the casting molten metal due to vibration can be sucked out by the vacuum pump 34, ensuring that the casting molten metal does not contain air (the suction force of the vacuum pump 34 is controllable, which can avoid sucking out the casting molten metal when sucking air);

[0049] Then, the vacuum pump 34 is turned off, the vibration assembly is kept vibrating, and at the same time, the water inlet pipe 19 and the return pipe 20 on the lifting outer ring 3 are connected to the external cooling water tank, so that the water in the cooling water tank can enter the spiral water flow cavity 301 through the water inlet pipe 19, and finally flow back to the cooling water tank through the return pipe 20. The cold water in the spiral water flow cavity 301 can take away the heat emitted by the casting metal liquid, and realize the cooling function of the casting metal liquid (the flow of cold water in the spiral water flow cavity 301 is then stopped). At the same time, the reciprocating vibration of the casting mold 5 can help the casting poured therein to cool evenly, and at the same time, the vibration can promote the stress redistribution inside the casting, release part of the residual stress, thereby reducing the risk of deformation or cracking of the casting;

[0050] After the molten metal of the casting to be batch-cast has cooled, the lifting motors 15 on both sides are started. The lifting motors 15 drive the lifting lead screws 6 to rotate. The nut blocks 14 threadedly connected to the surfaces of the lifting lead screws 6 drive the lifting outer ring 3 to move upward. The lifting outer ring 3 drives the lifting inner ring 4 to move upward. As a result, the inner electromagnetic induction heating coil 401 inside the lifting inner ring 4 rises, causing the inner electromagnetic induction heating coil 401 to rise to the upper surface position of the cooled casting (at the same horizontal plane as the upper surface), heating and melting the upper surface of the casting (then turning off the inner electromagnetic induction heating coil 401), which facilitates connection with the castings of the next batch of casting;

[0051] Then, the rotary smelting furnace 10 is rotated again through the handle 33, so that the alignment port 1002 at the bottom of the smelting tank 1001 at the next position is aligned with the alignment pipe 30. Then, the above process is repeated to remove the air in the molten metal of the casting, so that when the molten metal of the casting for the next batch enters the inside of the casting mold 5, it will directly contact the upper surface of the casting cooled in the previous batch. Since the upper surface of the casting cooled in the previous batch has been melted, it can directly contact and mix with the molten metal of the casting. Then, the lifting motor 15 is controlled to raise the lifting outer ring 3 to the molten metal of the casting to achieve the cooling function of the molten metal of the casting at that location. By repeating the above process multiple times, the overall metal casting can be cast in multiple batches. Since the amount of the molten metal of the casting for each batch of casting is small, it can ensure that the molten metal of the casting can be evenly cooled, and further ensure that the overall metal casting can be evenly cooled, avoiding the generation of large internal stresses.

[0052] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A stress-controllable machine tool casting device, comprising a lower base (1), an upper base (2) fixedly connected to the top of the lower base (1) through a column, and a casting mold (5) arranged above the upper base (2), characterized in that: A through opening is provided at the center of the upper base (2); a vibration assembly is provided at the top of the lower base (1); two symmetrically arranged lifting motors (15) are installed at the top of the lower base (1); the output end of the lifting motor (15) is connected to a nut block (14) via a lifting screw rod (6); one end of the nut block (14) is connected to a lifting outer ring (3); the inner wall of the lifting outer ring (3) is connected to a lifting inner ring (4); an inner electromagnetic induction heating coil (401) is provided on the inner side of the lifting inner ring (4); The top of the upper base (2) is connected to two symmetrically arranged mounting plates (7), an annular heat preservation box (9) is rotatably connected between the mounting plates (7) via a limit telescopic shaft, a rotary smelting furnace (10) is rotatably arranged inside the annular heat preservation box (9), a smelting tank (1001) is provided inside the rotary smelting furnace (10), a casting pipe (16) is rotatably arranged at the center of the rotary smelting furnace (10), and one end of the casting pipe (16) is connected to a vacuum pump (34).

2. A stress-controllable machine tool casting device according to claim 1, characterized in that: The bottom end of the casting mold (5) is provided with a caster, the top end of the upper base (2) is connected to a limiting slide rail (22), and the caster moves on the inner side of the limiting slide rail (22).

3. A stress-controllable machine tool casting device according to claim 1, characterized in that: A feed pipe (8) is provided at the top of the casting mold (5), the surface of the feed pipe (8) is connected to a limit ring (26), the surface of the feed pipe (8) is slidably connected to a docking sleeve (27), one end of the docking sleeve (27) is connected to a movable magnetic ring (28), and the end face of the movable magnetic ring (28) is connected to a limit pin (18).

4. A stress-controllable machine tool casting device according to claim 1, characterized in that: A fixed magnetic ring (29) magnetically attracted to the movable magnetic ring (28) is connected to the surface of the casting tube (16) near the other end, and a limiting hole (2901) is provided inside the fixed magnetic ring (29).

5. A stress-controllable machine tool casting device according to claim 1, characterized in that: A spiral water cavity (301) with a spiral direction is provided inside the lifting outer ring (3); the top end of the lifting outer ring (3) is connected to a water inlet pipe (19) in communication with the spiral water cavity (301); and the bottom end of the lifting outer ring (3) is connected to a return pipe (20) in communication with the spiral water cavity (301).

6. A stress-controllable machine tool casting device according to claim 1, characterized in that: The vibration assembly comprises a connecting slide rail (21) fixedly connected to the bottom end of the casting mold (5), a reciprocating motor (23) mounted on the top end of the lower base (1), and a turntable (24) fixedly connected to the output end of the reciprocating motor (23), wherein the top end of the turntable (24) is rotatably connected to a toggle shaft (25) near the edge, and the toggle shaft (25) is slidably connected to the connecting slide rail (21).

7. A stress-controllable machine tool casting device according to claim 1, characterized in that: The bottom end of the smelting tank (1001) is provided with an alignment port (1002) connected to the rotating tank, the side wall of the casting tube (16) is connected with an alignment tube (30), and the surface of the alignment tube (30) is provided with an electromagnetic valve.

8. The stress-controllable machine tool casting device according to claim 1, characterized in that: The side wall of the rotary smelting furnace (10) is provided with a feed port (1003), and the side wall of the rotary smelting furnace (10) is hinged with a feed door (17) for sealing the feed port (1003). An outer electromagnetic induction heating coil (901) for smelting metal is arranged inside the annular insulation box (9), and a side wall of the rotary smelting furnace (10) provided with the feed door (17) is provided with a plurality of handles (33) distributed in a circular manner.

9. A stress-controllable machine tool casting device according to claim 8, characterized in that: The surface of the annular heat preservation box (9) is provided with an indicator mark (31), and the side wall of the feed door (17) is connected with a pointer (32).

10. The stress-controllable machine tool casting device according to claim 1, characterized in that: One end of the limit telescopic shaft connected to the annular heat preservation box (9) is connected to a reduction gear (11), a driving motor (13) is installed on the side wall of the mounting plate (7), and the output end of the driving motor (13) is connected to a driving gear (12) meshing with the reduction gear (11).

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