Stress crack preventing cutting device for stainless steel metal casting machining

Abstract

The invention discloses a stress crack preventing cutting device for stainless steel metal casting machining, belongs to the technical field of cutting devices, and provides the following scheme that the stress crack preventing cutting device comprises a cutting machine body, and a feeding structure for feeding stainless steel metal castings is arranged on the cutting machine body; by arranging the feeding structure, the adjusting structure and the preheating structure, two stainless steel metal castings to be machined can be sequentially and orderly subjected to cutting treatment and preheating treatment correspondingly, preheating treatment is conducted by means of the electric heating assembly in the preheating cover, and therefore the temperature difference between the castings and a cutting tool in the cutting process is remarkably reduced, and the machining efficiency is improved. And secondly, preheating can promote the internal structure of the casting to tend to be in a more uniform state, the stress concentration phenomenon in the cutting process is further reduced, the cutting quality and the overall performance stability of the casting are remarkably improved, and high precision and high quality of a product are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of cutting devices, and in particular to a cutting device for preventing stress cracks in processing stainless steel metal castings. Background Art

[0002] In today's modern manufacturing system, stainless steel metal castings have always been highly concerned and valued by the industry due to their excellent physical properties, chemical properties and good mechanical properties, as well as their wide applicability in many key areas. However, it cannot be ignored that in a series of complex processing processes for stainless steel metal castings, the cutting device, as one of the core tools, its performance and the level of technology it possesses will have a direct and crucial impact on the final quality, overall efficiency and comprehensive cost of the processing.

[0003] The cutting devices commonly used in the processing of stainless steel metal castings on the market are usually relatively simple in structure. These devices are often not equipped with an effective preheating system and cannot perform uniform and effective preheating treatment on the castings before cutting. Due to the poor thermal conductivity of stainless steel materials, the lack of appropriate preheating means will lead to a significant temperature difference between the casting and the cutting tool. When cutting, the stainless steel metal castings that have not been preheated will expand rapidly due to the high temperature in the cutting area, while the non-cutting area still maintains the original temperature. This temperature gradient will cause uneven thermal stress inside the material. The thermal stress is concentrated around the cutting area, making the area more prone to plastic deformation. Once the stress exceeds the bearing limit of the material, micro cracks may form. In addition, during the cutting process, if the temperature change causes a rapid phase change inside the material, such as a martensitic phase change, phase change stress will also be generated. These stresses may also cause cracks. In response to the above problems, the present invention document proposes a cutting device for preventing stress cracks for processing stainless steel metal castings. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art, and proposes a cutting device for preventing stress cracks for stainless steel metal castings. The cutting device can significantly reduce the temperature difference between the casting and the cutting tool during the cutting process, effectively reduce the thermal stress generated during cutting, and reduce the formation of stress cracks. Secondly, preheating can promote the internal structure of the casting to a more uniform state, further reduce the stress concentration phenomenon during the cutting process, significantly improve the cutting quality and overall performance stability of the casting, and ensure the high precision and high quality of the product.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A cutting device for preventing stress cracks for processing stainless steel metal castings, comprising a cutting machine body, the cutting machine body being provided with a feeding structure for feeding and processing the stainless steel metal castings, the feeding structure being provided with a driving structure for providing power, and a preheating structure for preprocessing the stainless steel metal castings, and the feeding structure being provided with an adjusting structure, the preheating structure being provided with a sealing structure, and a resetting structure for adjusting the sealing structure; The feeding structure comprises a feeding rack installed on the operating table of the cutting machine body, the feeding rack is slidably connected with a first storage plate and a movable plate in the horizontal direction, the movable plate is slidably connected with at least one connecting rack in the vertical direction, the top of the connecting rack is fixedly connected with a second storage plate, and the feeding rack is fixedly connected with a guide plate; The adjustment structure includes at least one adjustment groove arranged on the side of the loading rack, an adjustment wheel is rollingly connected inside the adjustment groove, and the adjustment wheel is rotatably connected to the bottom of the connecting rack. When the movable plate moves horizontally inside the loading rack, the connecting rack drives the second storage plate to move in the vertical direction under the cooperation of the adjustment groove and the adjustment wheel. The preheating structure includes a preheating cover fixedly connected to the top of the loading rack, and an electric heating component is installed inside the preheating cover.

[0006] Preferably, a convex block is provided at the bottom of the movable plate, and the movable plate is slidably connected to the top of the guide plate through the convex block and is always in contact with the guide plate.

[0007] Preferably, the driving structure includes two rotating wheels, both of which are rotatably connected to the side of the loading rack, and the two rotating wheels are transmission-connected to the same belt.

[0008] Preferably, the driving structure further comprises a mounting frame fixedly connected to a side surface of the loading rack, a driving motor is mounted on the mounting frame, and an output end of the driving motor is fixedly connected to one of the rotating wheels.

[0009] Preferably, the belt is fixedly connected with a first connecting block and a second connecting block on both sides, and the first connecting block and the second connecting block are fixedly connected to the movable plate and the first placing plate respectively. When the driving motor rotates back and forth alternately, the positions of the first placing plate and the second placing plate can be swapped, and the first connecting block and the second connecting block are both slidably connected to the loading rack.

[0010] Preferably, a limiting frame is fixedly connected to the side of the loading rack, the limiting frame is located on a side of the loading rack surface close to the second connecting block, and the second connecting block is slidably connected to the outer wall of the limiting frame.

[0011] Preferably, the sealing structure comprises a sealing plate slidably connected to the side of the preheating cover, both sides of the sealing plate are fixedly connected with adjustment plates, and the top of the sealing plate is fixedly connected with a pushing frame.

[0012] Preferably, two push plates are fixedly connected to the first storage plate and the second storage plate, and the push plates selectively fit with the adjustment plates. The shape of the push plates is set to be trapezoidal, and the shape of the adjustment plates is set to be triangular. Positioning components for fixing the stainless steel metal castings are installed on the push plates.

[0013] Preferably, the reset structure comprises a telescopic rod fixedly connected to the top of the preheating hood, a movable rod of the telescopic rod is fixedly connected to the pushing frame, an outer wall of the telescopic rod is sleeved with a spring, and both ends of the spring are respectively fixedly connected to the preheating hood and the pushing frame.

[0014] Preferably, the reset structure further comprises a sleeve fixedly connected to the top of the preheating cover, and the telescopic rod and the spring are both located inside the sleeve.

[0015] Compared with the prior art, the present invention provides a cutting device for preventing stress cracks for stainless steel metal castings, which has the following beneficial effects: 1. The cutting device for preventing stress cracks for processing stainless steel metal castings is provided with a feeding structure, an adjustment structure and a preheating structure. When an operator uses the device to perform cutting processing on stainless steel metal castings, two stainless steel metal castings to be cut can be conveniently placed on the surfaces of the first placement plate and the second placement plate respectively. When the driving motor rotates back and forth alternately, the positions of the first placement plate and the second placement plate can be accurately and efficiently swapped with each other under the cooperation of the adjustment groove and the adjustment wheel, so that the two stainless steel metal castings to be processed can be cut and preheated in sequence and in an orderly manner, greatly improving the processing efficiency and optimizing the work flow. Inside the preheating hood, the electric heating component is used for preheating treatment, so as to significantly reduce the temperature difference between the casting and the cutting tool during the cutting process, effectively reduce the thermal stress generated during cutting, and reduce the formation of stress cracks. Secondly, the preheating can promote the internal structure of the casting to be more uniform, further reduce the stress concentration phenomenon during the cutting process, significantly improve the cutting quality and overall performance stability of the casting, and ensure the high precision and high quality of the product.

[0016] 2. The cutting device for preventing stress cracks in processing stainless steel metal castings is provided with a sealing structure and a reset structure. Under the precise force of the spring, the sealing plate can automatically and quickly perform a closing process on the side of the preheating hood. This design ensures that when the stainless steel metal castings are preheated inside the preheating hood with the help of an electric heating component, the heat accumulated inside the preheating hood is difficult to dissipate to the outside. This strict heat blocking mechanism not only effectively avoids unnecessary heat loss, significantly improves energy utilization efficiency, and reduces overall energy consumption, but also can maintain the stability and uniformity of the temperature inside the preheating hood, creating an ideal and constant thermal environment for the preheating treatment of stainless steel metal castings, thereby effectively ensuring the consistency and reliability of the preheating effect.

[0017] 3. The cutting device for preventing stress cracks for processing stainless steel metal castings is provided with a push plate. When the stainless steel metal casting moves to the inside of the preheating cover via the first placement plate or the second placement plate, the corresponding push plate will first come into contact with the adjustment plate. The mechanical effect generated by this contact enables the adjustment plate to automatically and accurately drive the sealing plate to open. During this process, the first placement plate or the second placement plate can smoothly and automatically drive the stainless steel metal casting to accurately enter the inside of the preheating cover. This design not only greatly improves the automation level of the device and reduces the need for manual intervention, thereby effectively reducing operating errors and labor intensity, but also ensures that the process of the stainless steel metal casting entering the preheating cover is smooth, rapid and accurate, providing reliable preconditions for subsequent preheating treatment, and further optimizing the workflow and efficiency of the entire cutting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional view of a cutting device for preventing stress cracks in stainless steel metal castings according to the present invention; Figure 2 A view of the connection structure of the cutting machine body, the feeding structure, the preheating structure and the sealing structure of the present invention; Figure 3 It is a view of the connection structure of the feeding structure, the limiting frame, the sealing structure and the reset structure of the present invention; Figure 4 It is a view of the connection structure of the feeding structure, the limiting frame, the driving structure, the preheating structure, the sealing structure and the reset structure of the present invention; Figure 5 A view of the connection structure of the loading rack, the guide plate, the first storage plate and the second storage plate of the present invention; Figure 6 A view of the connection structure of the movable plate, the second storage plate, the first storage plate and the driving structure of the present invention; Figure 7A view of the second storage plate, the movable plate and the adjustment structure connection structure of the present invention; Figure 8 This is a disassembled view of the movable plate, the second storage plate, the connecting frame, the adjusting wheel and the guide plate of the present invention; Fig. 9 A view of the connection structure of the preheating cover, the electric heating assembly, the sealing plate, the adjustment plate and the push frame of the present invention; Fig.10 This is a view of the connection structure of the sealing plate, the adjustment plate and the pushing frame of the present invention.

[0019] In the figure: 1. cutting machine body; 2. feeding structure; 201. feeding frame; 202. guide plate; 203. first storage plate; 204. second storage plate; 205. movable plate; 206. connecting frame; 3. limiting frame; 4. driving structure; 401. rotating wheel; 402. mounting frame; 403. driving motor; 404. belt; 405. first connecting block; 406. second connecting block; 5. adjusting structure; 501. adjusting groove; 502. adjusting wheel; 6. preheating structure; 601. preheating cover; 602. electric heating component; 7. sealing structure; 701. sealing plate; 702. adjusting plate; 703. pushing frame; 8. resetting structure; 801. telescopic rod; 802. spring; 803. sleeve; 9. pushing plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0021] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] Example 1: Reference Figure 1-Figure 8 A cutting device for preventing stress cracks for processing stainless steel metal castings, comprising a cutting machine body 1, a feeding structure 2 for feeding stainless steel metal castings is arranged on the cutting machine body 1, a driving structure 4 for providing power is arranged on the feeding structure 2, and a preheating structure 6 for pre-treating the stainless steel metal castings is arranged, and an adjusting structure 5 is arranged on the feeding structure 2, a sealing structure 7 is arranged on the preheating structure 6, and a reset structure 8 for adjusting the sealing structure 7 is arranged; The feeding structure 2 includes a feeding frame 201 installed on the operating table of the cutting machine body 1, and a first storage plate 203 and a movable plate 205 are slidably connected to the feeding frame 201 in the horizontal direction, and at least one connecting frame 206 is slidably connected inside the movable plate 205 in the vertical direction, and a second storage plate 204 is fixedly connected to the top of the connecting frame 206, and a guide plate 202 is fixedly connected to the feeding frame 201; The adjustment structure 5 includes at least one adjustment groove 501 arranged on the side of the loading rack 201, and an adjustment wheel 502 is rollingly connected inside the adjustment groove 501, and the adjustment wheel 502 is rotatably connected to the bottom of the connecting frame 206. When the movable plate 205 moves horizontally inside the loading rack 201, with the cooperation of the adjustment groove 501 and the adjustment wheel 502, the connecting frame 206 drives the second storage plate 204 to move in the vertical direction. The preheating structure 6 includes a preheating cover 601 fixedly connected to the top of the loading rack 201, and an electric heating component 602 is installed inside the preheating cover 601.

[0023] In the present invention, a convex block is provided at the bottom of the movable plate 205, and the movable plate 205 is slidably connected to the top of the guide plate 202 through the convex block, and is always in contact with the guide plate 202. By providing the movable plate 205, and providing a guide plate 202 slidably connected to the guide plate 202 at the bottom of the movable plate 205, the guide plate 202 can always be stably slidably connected to the top of the guide plate 202, thereby ensuring the stability of the second storage plate 204 when sliding on the surface of the loading rack 201.

[0024] In the present invention, the driving structure 4 includes two rotating wheels 401, both of which are rotatably connected to the side of the loading rack 201, and the same belt 404 is connected to the two rotating wheels 401 for transmission. The driving structure 4 also includes a mounting frame 402 fixedly connected to the side of the loading rack 201, and a driving motor 403 is installed on the mounting frame 402. The output end of the driving motor 403 is fixedly connected to one of the rotating wheels 401, and the two sides of the belt 404 are respectively fixedly connected with a first connecting block 405 and a second connecting block 406. The first connecting block 405 and the second connecting block 406 are respectively fixedly connected to the movable plate 205 and the first placement plate 203. When the driving motor 403 rotates back and forth alternately, the first placement plate 203 and the second placement plate 2 04 can be swapped, the first connecting block 405 and the second connecting block 406 are both slidably connected to the loading rack 201, and by setting the driving structure 4, when the operator uses the device to cut the stainless steel metal castings, the two stainless steel metal castings to be cut can be conveniently placed on the surfaces of the first placement plate 203 and the second placement plate 204 respectively, and when the driving motor 403 rotates back and forth alternately, with the cooperation of the adjusting groove 501 and the adjusting wheel 502, the positions of the first placement plate 203 and the second placement plate 204 can be accurately and efficiently swapped, so that the two stainless steel metal castings to be processed can be cut and preheated in sequence and in an orderly manner, which greatly improves the processing efficiency and optimizes the workflow.

[0025] In the present invention, the side of the loading rack 201 is fixedly connected to the limiting rack 3, the limiting rack 3 is located on the side of the loading rack 201 surface close to the second connecting block 406, and the second connecting block 406 is slidably connected to the outer wall of the limiting rack 3. By setting the limiting rack 3 and setting the second connecting block 406 to be slidably connected to the outer wall of the limiting rack 3, with the cooperation of the limiting rack 3 and the second connecting block 406, the first storage plate 203 is difficult to separate from the loading rack 201, thereby ensuring the stability of the device.

[0026] Example 2: Reference Figure 1-Figure 10 A cutting device for preventing stress cracks for processing stainless steel metal castings, comprising a cutting machine body 1, a feeding structure 2 for feeding stainless steel metal castings is arranged on the cutting machine body 1, a driving structure 4 for providing power is arranged on the feeding structure 2, and a preheating structure 6 for pre-treating the stainless steel metal castings is arranged, and an adjusting structure 5 is arranged on the feeding structure 2, a sealing structure 7 is arranged on the preheating structure 6, and a reset structure 8 for adjusting the sealing structure 7 is arranged; The feeding structure 2 includes a feeding frame 201 installed on the operating table of the cutting machine body 1, and a first storage plate 203 and a movable plate 205 are slidably connected to the feeding frame 201 in the horizontal direction, and at least one connecting frame 206 is slidably connected inside the movable plate 205 in the vertical direction, and a second storage plate 204 is fixedly connected to the top of the connecting frame 206, and a guide plate 202 is fixedly connected to the feeding frame 201; The adjustment structure 5 includes at least one adjustment groove 501 arranged on the side of the loading rack 201, and an adjustment wheel 502 is rollingly connected inside the adjustment groove 501, and the adjustment wheel 502 is rotatably connected to the bottom of the connecting frame 206. When the movable plate 205 moves horizontally inside the loading rack 201, with the cooperation of the adjustment groove 501 and the adjustment wheel 502, the connecting frame 206 drives the second storage plate 204 to move in the vertical direction. The preheating structure 6 includes a preheating cover 601 fixedly connected to the top of the loading rack 201, and an electric heating component 602 is installed inside the preheating cover 601.

[0027] In the present invention, a convex block is provided at the bottom of the movable plate 205, and the movable plate 205 is slidably connected to the top of the guide plate 202 through the convex block, and is always in contact with the guide plate 202. By providing the movable plate 205, and providing a guide plate 202 slidably connected to the guide plate 202 at the bottom of the movable plate 205, the guide plate 202 can always be stably slidably connected to the top of the guide plate 202, thereby ensuring the stability of the second storage plate 204 when sliding on the surface of the loading rack 201.

[0028] In the present invention, the driving structure 4 includes two rotating wheels 401, both of which are rotatably connected to the side of the loading rack 201, and the same belt 404 is connected to the two rotating wheels 401 for transmission. The driving structure 4 also includes a mounting frame 402 fixedly connected to the side of the loading rack 201, and a driving motor 403 is installed on the mounting frame 402. The output end of the driving motor 403 is fixedly connected to one of the rotating wheels 401, and the two sides of the belt 404 are respectively fixedly connected with a first connecting block 405 and a second connecting block 406. The first connecting block 405 and the second connecting block 406 are respectively fixedly connected to the movable plate 205 and the first placement plate 203. When the driving motor 403 rotates back and forth alternately, the first placement plate 203 and the second placement plate 2 04 can be swapped, the first connecting block 405 and the second connecting block 406 are both slidably connected to the loading rack 201, and by setting the driving structure 4, when the operator uses the device to cut the stainless steel metal castings, the two stainless steel metal castings to be cut can be conveniently placed on the surfaces of the first placement plate 203 and the second placement plate 204 respectively, and when the driving motor 403 rotates back and forth alternately, with the cooperation of the adjusting groove 501 and the adjusting wheel 502, the positions of the first placement plate 203 and the second placement plate 204 can be accurately and efficiently swapped, so that the two stainless steel metal castings to be processed can be cut and preheated in sequence and in an orderly manner, which greatly improves the processing efficiency and optimizes the workflow.

[0029] In the present invention, the side of the loading rack 201 is fixedly connected to the limiting rack 3, the limiting rack 3 is located on the side of the loading rack 201 surface close to the second connecting block 406, and the second connecting block 406 is slidably connected to the outer wall of the limiting rack 3. By setting the limiting rack 3 and setting the second connecting block 406 to be slidably connected to the outer wall of the limiting rack 3, with the cooperation of the limiting rack 3 and the second connecting block 406, the first storage plate 203 is difficult to separate from the loading rack 201, thereby ensuring the stability of the device.

[0030] In the present invention, the sealing structure 7 includes a sealing plate 701 slidably connected to the side of the preheating cover 601, and the two sides of the sealing plate 701 are fixedly connected to the adjusting plate 702, and the top of the sealing plate 701 is fixedly connected to the pushing frame 703, and the first storage plate 203 and the second storage plate 204 are fixedly connected to two pushing plates 9, and the pushing plate 9 selectively fits with the adjusting plate 702, and the shape of the pushing plate 9 is set to be a trapezoid, and the shape of the adjusting plate 702 is set to be a triangle. A positioning component for fixing the stainless steel metal casting is installed on the pushing plate 9; the reset structure 8 includes a telescopic rod 801 fixedly connected to the top of the preheating cover 601, and the movable rod of the telescopic rod 801 is fixedly connected to the pushing frame 703. The outer wall of the telescopic rod 801 is provided with a spring 802, and the two ends of the spring 802 are respectively fixedly connected to the preheating cover 601 and the pushing frame 703, and the reset structure 8 also includes a sleeve 803 fixedly connected to the top of the preheating cover 601, and the telescopic rod 801 and the spring 802 are both located inside the sleeve 803. By providing the sealing structure 7 and the reset structure 8, under the precise force of the spring 802, the sealing plate 701 can automatically and quickly perform the closing process on the side of the preheating cover 601. This design ensures that when the stainless steel metal casting is preheated inside the preheating cover 601 with the help of the electric heating component 602, the heat accumulated inside the preheating cover 601 is difficult to dissipate to the outside. This strict heat blocking mechanism not only effectively avoids the unnecessary loss of heat, significantly improves the energy utilization efficiency, and reduces the overall energy consumption, but also can maintain the stability and uniformity of the temperature inside the preheating cover 601, creating an ideal and constant thermal environment for the preheating treatment of the stainless steel metal casting, thereby effectively ensuring the consistency and reliability of the preheating effect.

[0031] Working principle: When the operator uses the device to perform cutting processing on stainless steel metal castings, the driving motor 403 is first turned on to make the driving motor 403 perform alternating forward and reverse rotational motion. With the cooperation of the two rotating wheels 401, the driving motor 403 drives the belt 404 to rotate. The belt 404 drives the first placement plate 203 and the second placement plate 204 to perform position swapping motion through the first connecting block 405, the second connecting block 406 and the movable plate 205. When the positions of the first placement plate 203 and the second placement plate 204 are swapped, with the cooperation of the adjusting wheel 502, the connecting frame 206 drives the second placement plate 204 to move along the shape of the adjusting slot 501, thereby avoiding collision and obstruction between the first placement plate 203 and the second placement plate 204. After the operator places two stainless steel metal castings to be processed on the surfaces of the first placement plate 203 and the second placement plate 204, when the stainless steel metal castings pass through the first placement plate 203 or the second placement plate 204 and move to the inside of the preheating cover 601, the corresponding push plate 9 first contacts the adjustment plate 702, so that the adjustment plate 702 automatically drives the sealing plate 701 to open, and the sealing plate 701 stretches the telescopic rod 801 and the spring 802 through the push frame 703. When the first placement plate 203 or the second placement plate 20 After the stainless steel metal casting is automatically driven into the preheating cover 601, the sealing plate 701 is automatically closed on the side of the preheating cover 601 under the force of the spring 802, and the electric heating component 602 inside the preheating cover 601 works, thereby preheating the stainless steel metal casting inside the preheating cover 601. At this time, the stainless steel metal casting away from the preheating cover 601 extends into the cutting machine body 1, and the cutting component inside the cutting machine body 1 cuts it; When the corresponding stainless steel metal casting has completed the cutting process, the first placement plate 203 and the second placement plate 204 are driven by the drive motor 403 and the belt 404 to swap positions again, and the push plate 9 inside the preheating cover 601 squeezes the adjustment plate 702, so that the sealing plate 701 is automatically opened. When the cut stainless steel metal casting is moved out of the cutting machine body 1, the operator removes the cut stainless steel metal casting and replaces it with a new stainless steel metal casting to be processed, so that it can be moved to the inside of the preheating cover 601 for preheating treatment, and the stainless steel metal casting after the preheating treatment is moved to the inside of the cutting machine body 1 for cutting operation.

[0032] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cutting device for preventing stress cracks in stainless steel metal castings, comprising a cutting machine body (1), characterized in that: The cutting machine body (1) is provided with a feeding structure (2) for feeding the stainless steel metal casting, the feeding structure (2) is provided with a driving structure (4) for providing power, and a preheating structure (6) for pre-treating the stainless steel metal casting, and the feeding structure (2) is provided with an adjusting structure (5), the preheating structure (6) is provided with a sealing structure (7), and a resetting structure (8) for adjusting the sealing structure (7); The loading structure (2) comprises a loading rack (201) mounted on an operating table of a cutting machine body (1); a first storage plate (203) and a movable plate (205) are slidably connected to the loading rack (201) in a horizontal direction; at least one connecting rack (206) is slidably connected to the movable plate (205) in a vertical direction; a second storage plate (204) is fixedly connected to the top of the connecting rack (206); and a guide plate (202) is fixedly connected to the loading rack (201); The adjustment structure (5) comprises at least one adjustment groove (501) arranged on the side of the loading rack (201); an adjustment wheel (502) is rollingly connected inside the adjustment groove (501); the adjustment wheel (502) is rotatably connected to the bottom of the connecting rack (206); when the movable plate (205) moves horizontally inside the loading rack (201), the connecting rack (206) drives the second storage plate (204) to move in the vertical direction under the cooperation of the adjustment groove (501) and the adjustment wheel (502); the preheating structure (6) comprises a preheating cover (601) fixedly connected to the top of the loading rack (201); an electric heating component (602) is installed inside the preheating cover (601).

2. A cutting device for preventing stress cracks in stainless steel metal casting processing according to claim 1, characterized in that: A convex block is provided at the bottom of the movable plate (205), and the movable plate (205) is slidably connected to the top of the guide plate (202) via the convex block, and is always in contact with the guide plate (202).

3. A cutting device for preventing stress cracks in stainless steel metal casting processing according to claim 2, characterized in that: The driving structure (4) comprises two rotating wheels (401), both of which are rotatably connected to the side of the loading rack (201), and the two rotating wheels (401) are transmission-connected to the same belt (404).

4. A cutting device for preventing stress cracks in stainless steel metal casting processing according to claim 3, characterized in that: The driving structure (4) further comprises a mounting frame (402) fixedly connected to a side of the loading frame (201), a driving motor (403) being mounted on the mounting frame (402), and an output end of the driving motor (403) being fixedly connected to one of the rotating wheels (401).

5. A cutting device for preventing stress cracks in stainless steel metal casting processing according to claim 4, characterized in that: A first connection block (405) and a second connection block (406) are fixedly connected to both sides of the belt (404), respectively; the first connection block (405) and the second connection block (406) are fixedly connected to the movable plate (205) and the first storage plate (203), respectively; when the drive motor (403) rotates back and forth, the positions of the first storage plate (203) and the second storage plate (204) can be swapped; and the first connection block (405) and the second connection block (406) are both slidably connected to the loading rack (201).

6. A cutting device for preventing stress cracks in stainless steel metal casting processing according to claim 5, characterized in that: The side of the loading rack (201) is fixedly connected to a limiting rack (3), the limiting rack (3) is located on a side of the surface of the loading rack (201) close to the second connecting block (406), and the second connecting block (406) is slidably connected to the outer wall of the limiting rack (3).

7. A cutting device for preventing stress cracks in stainless steel metal casting processing according to claim 6, characterized in that: The sealing structure (7) comprises a sealing plate (701) slidably connected to the side of the preheating cover (601), an adjustment plate (702) being fixedly connected to both sides of the sealing plate (701), and a pushing frame (703) being fixedly connected to the top of the sealing plate (701).

8. A cutting device for preventing stress cracks in stainless steel metal casting processing according to claim 7, characterized in that: Two push plates (9) are respectively fixedly connected to the first storage plate (203) and the second storage plate (204); the push plates (9) are selectively fitted with the adjustment plate (702); the shape of the push plates (9) is set to be a trapezoid; the shape of the adjustment plate (702) is set to be a triangle; and a positioning component for fixing the stainless steel metal casting is installed on the push plates (9).

9. A cutting device for preventing stress cracks in stainless steel metal casting processing according to claim 7, characterized in that: The resetting structure (8) comprises a telescopic rod (801) fixedly connected to the top of the preheating cover (601), a movable rod of the telescopic rod (801) being fixedly connected to the pushing frame (703), an outer wall of the telescopic rod (801) being provided with a spring (802), and two ends of the spring (802) being fixedly connected to the preheating cover (601) and the pushing frame (703), respectively.

10. A cutting device for preventing stress cracks in stainless steel metal casting processing according to claim 9, characterized in that: The reset structure (8) further comprises a sleeve (803) fixedly connected to the top of the preheating cover (601), and the telescopic rod (801) and the spring (802) are both located inside the sleeve (803).

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