A grinding device for the production of cast steel parts

Abstract

This invention discloses a grinding device for the production of cast steel parts, relating to the field of cast steel part processing technology. The grinding device includes a base frame, a supporting frame fixed at a corner of the base frame, a top frame fixed on the supporting frame, and a moving component, a grinding component, a transmission component, and a liquid supply component. The moving component is mounted on the top frame, and the grinding component is mounted on the moving component. The grinding component includes a mounting plate, an electric telescopic rod fixed to the bottom side of the mounting plate, a motor mounting plate fixed to the extension end of the electric telescopic rod, and a drive motor fixed to the bottom side of the motor mounting plate. This invention drives multiple grinding rollers to rotate synchronously via a transmission gear ring, while the bottom cylinder revolves as a whole, forming a composite motion. This effectively increases the effective grinding area, avoids local overheating, reduces heat accumulation, and significantly improves grinding uniformity and efficiency. Compared to traditional single grinding discs, it extends the lifespan of the grinding components.

Description

Technical Field

[0001] This invention relates to the field of steel casting processing technology, and in particular to a grinding device for steel casting production. Background Technology

[0002] In the production and processing of cast steel parts, grinding is a crucial step in ensuring surface precision, removing burrs and casting defects. Its quality directly impacts the subsequent assembly performance and service life of the cast steel parts. Currently, most mainstream casting steel grinding devices on the market employ a single grinding disc structure, achieving grinding through continuous friction between the grinding disc and the surface of the cast steel part. However, in practical applications, several technical challenges remain, making it difficult to meet the demands for efficient and stable production.

[0003] First, there is a contradiction between the grinding efficiency and component wear of traditional grinding devices. The single grinding disc is in surface contact with the cast steel part, and prolonged continuous friction can easily lead to a sudden increase in local temperature. This may not only cause oxidation and discoloration of the cast steel part surface, but also accelerate the wear of the grinding disc. Frequent replacement of the grinding disc is required to ensure grinding accuracy, which increases consumable costs, interrupts the production process, and reduces overall processing efficiency.

[0004] Secondly, the cooling and chip removal system design is inadequate. If the high temperatures generated during grinding are not cooled in time, they will directly affect the hardness and lifespan of the grinding roller (or grinding disc). Existing devices mostly use external nozzles for wide-area spraying of coolant, making it difficult to precisely cover the grinding contact area, resulting in poor targeted cooling and overheating issues in some areas. Furthermore, metal shavings generated during grinding tend to accumulate in the grinding area. If not cleaned promptly, they will further scratch the surface of the cast steel parts during grinding, leading to a decrease in surface finish. Additionally, shavings entering the device can cause jamming of transmission components, increasing the risk of equipment failure.

[0005] In summary, current grinding equipment for cast steel parts still has room for improvement in terms of grinding efficiency and cooling effect. There is an urgent need for a grinding device that can balance efficient grinding and precise cooling to meet the actual needs of cast steel parts production and processing. Summary of the Invention

[0006] The purpose of this invention is to provide a grinding device for the production of cast steel parts, so as to solve the problems mentioned in the background art.

[0007] The technical solution of the present invention is: a grinding device for the production of cast steel parts, including a base frame, a supporting frame fixed at the corner of the base frame, a top frame fixed on the supporting frame, and further comprising:

[0008] A movable component, the movable component being disposed on the top frame;

[0009] A grinding assembly is mounted on a movable assembly. The grinding assembly includes a mounting plate, an electric telescopic rod fixed to the bottom side of the mounting plate, a motor mounting base plate fixed to the extension end of the electric telescopic rod, a drive motor fixedly mounted on the bottom side of the motor mounting base plate, an extension shaft fixedly connected to the output shaft of the drive motor, and an integral bottom end cylinder provided at the bottom of the extension shaft. The bottom side of the bottom end cylinder has multiple equally spaced grooves, and a grinding roller is rotatably mounted in each groove.

[0010] The bottom of the bottom cylinder is provided with an extension cavity and multiple arc-shaped flow channels. The multiple arc-shaped flow channels are connected to the extension cavity. The extension cavity and the multiple arc-shaped flow channels are detachably and fixedly connected to a mesh cover plate.

[0011] A transmission assembly for driving the grinding roller to rotate;

[0012] A liquid supply assembly for supplying grinding coolant to the bottom end cylinder.

[0013] Preferably, an impeller is fixedly installed inside the bottom cylinder, and a water inlet is opened at the middle of the impeller, with the bottom end of the water inlet connected to the extension cavity.

[0014] Preferably, the outer peripheral wall of the motor mounting plate is fixed with reinforcing side arms on both sides, and the middle ends of the two reinforcing side arms are fixed with stiffening ribs. The opposite sides of the two stiffening ribs are jointly fixed with an adapter cylinder, which is rotatably mounted on the outer wall of the extension shaft through a sealed bearing.

[0015] Preferably, the liquid supply assembly includes a pair of mounting seats fixedly installed on both sides of the mounting plate, and a pair of connecting seats are fixed on the outer peripheral wall of the adapter cylinder. The mounting seats and connecting seats are rotatably mounted with cross connecting rods through a movable shaft, and the cross connecting rods are all provided with hollow tube grooves inside.

[0016] Preferably, a corrugated hose is inserted into the hollowed-out tube groove, one end of the corrugated hose is fixedly connected to the adapter cylinder, an infusion channel is opened on the extension shaft, an integrally connected branch is provided at the bottom end of the infusion channel, and the top ends of the two corrugated hoses are fixedly connected to a diversion pipe, which is fixedly connected to an external infusion supply system.

[0017] Preferably, the transmission assembly includes a transmission gear ring coaxially arranged with the bottom cylinder, one end of each grinding roller extends movably through to the outside of the bottom cylinder, and one end of each grinding roller is fixedly mounted with a transmission gear, which meshes with the transmission gear ring.

[0018] Preferably, the moving component includes a pair of guide rails 1 fixedly installed on the top of the top frame. Each guide rail 1 is fitted with an electric slider 1. The two electric slider 1 are fixedly connected to a guide rail 2. An electric slider 2 is fitted on the guide rail 2. The bottom of the electric slider 2 is fixedly connected to the mounting plate. An auxiliary guide rail is fixedly installed on the top of the guide rail 2. A support slider is slidably installed on the auxiliary guide rail. The top of the support slider is fixedly connected to the diverter pipe.

[0019] Preferably, the bottom side of the mounting plate is fixed with a plurality of guide cylinders distributed at equal intervals, and the top of the motor mounting base plate is fixed with a plurality of guide posts, the guide posts and guide cylinders slidingly engaging in the vertical direction.

[0020] Preferably, each of the bottom cylinders has a connecting cavity near the groove opening, the connecting cavity having an L-shaped structure, and a spray hole with a conical structure is provided at the bottom end of the connecting cavity, which is connected to the groove opening.

[0021] Preferably, a return spring is fixedly installed at each port of the infusion channel, and a sealing block is fixedly connected to each end of the return spring. A pair of guide rods are fixedly connected to the sealing block, and the guide rods slide in the horizontal direction with the extension shaft.

[0022] The present invention provides an improved grinding apparatus for the production of cast steel parts, which has the following improvements and advantages compared with the prior art:

[0023] Firstly, this invention drives multiple grinding rollers to rotate synchronously via a transmission gear ring, while the bottom cylinder revolves as a whole, forming a compound motion. This effectively increases the effective grinding area, avoids local overheating, reduces heat accumulation, and significantly improves grinding uniformity and efficiency. Compared to traditional single grinding discs, it extends the lifespan of the grinding components.

[0024] Secondly, the impeller of this invention rotates at high speed with the drive motor, accelerating the flow of coolant through the arc-shaped flow channel and the L-shaped connecting cavity; the conical spray holes are directly aligned with the contact point between the grinding roller and the workpiece, and combined with the mesh cover plate to evenly distribute the flow, which can efficiently cool down the workpiece and prevent the cast steel parts and grinding roller from deforming due to high temperature. At the same time, it washes away the debris in real time, avoiding the accumulation of debris that affects the grinding accuracy. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1This is a first-view perspective three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the overall second-view three-dimensional structure of the present invention;

[0028] Figure 3 This is a three-dimensional structural diagram of guide rail one and guide rail two of the present invention;

[0029] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0030] Figure 5 This is a schematic diagram of the three-dimensional structure of the cross linkage of the present invention;

[0031] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B;

[0032] Figure 7 This is a schematic diagram of the three-dimensional structure of the bottom end cylinder of the present invention;

[0033] Figure 8 This is a schematic diagram of the internal structure of the bottom end cylinder of the present invention;

[0034] Figure 9 This is a schematic diagram of the infusion channel structure of the present invention;

[0035] Figure 10 For the present invention Figure 9 Enlarged structural diagram at point C;

[0036] Figure 11 This is a schematic diagram of the extension shaft structure in Embodiment 2 of the present invention.

[0037] Figure label:

[0038] 1. Base frame; 2. Support frame; 3. Top frame; 4. Guide rail one; 5. Guide rail two; 6. Electric slider one; 7. Electric slider two; 8. Mounting plate; 9. Electric telescopic rod; 10. Bottom end cylinder; 11. Drive motor; 12. Extension shaft; 121. Infusion channel; 122. Support port; 13. Cross link; 131. Hollowed-out tube groove; 14. Mounting seat; 15. Corrugated hose; 16. Connecting seat; 17. Diverter pipe; 18. Motor mounting plate; 19. Reinforced side arm; 20. Guide cylinder; 21. Guide column; 22. Rib; 23. Impeller; 24. Grinding roller; 25. Transmission gear; 26. Transmission gear ring; 27. Connecting cavity; 28. Spray hole; 29. ​​Drain outlet; 30. Extension cavity; 31. Arc-shaped flow channel; 32. Mesh cover plate; 33. Adapter cylinder; 34. Return spring; 35. Sealing block; 36. Guide rod; 37. Auxiliary guide rail; 38. Support slider; 39. Groove opening. Detailed Implementation

[0039] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] This invention provides an improved grinding device for producing cast steel parts. The technical solution of this invention is as follows: Example 1

[0041] like Figures 1 to 10 As shown, this embodiment of the invention provides a grinding device for producing cast steel parts, including a base frame 1, a supporting frame 2 fixed at the corner of the base frame 1, and a top frame 3 fixed on the supporting frame 2. The supporting frame 2 and the top frame 3 constitute the main support structure of the equipment. The base frame 1 provides stable support at the bottom. It also includes a moving component, a grinding component, a transmission component, and a liquid supply component.

[0042] The movable component is set on the top frame 3, and the movable component is used to adjust the position of the polishing component;

[0043] The grinding assembly is mounted on the moving assembly. The grinding assembly includes a mounting plate 8. An electric telescopic rod 9 is fixed to the bottom side of the mounting plate 8. A motor mounting base plate 18 is fixed to the extension end of the electric telescopic rod 9. A drive motor 11 is fixedly mounted on the bottom side of the motor mounting base plate 18. An extension shaft 12 is fixedly connected to the output shaft of the drive motor 11. An integral bottom end cylinder 10 is provided at the bottom of the extension shaft 12. A plurality of equally spaced grooves 39 are opened on the bottom side of the bottom end cylinder 10. A grinding roller 24 is rotatably mounted in each groove 39.

[0044] The bottom of the bottom cylinder 10 is provided with an extension cavity 30 and multiple arc-shaped flow channels 31. The multiple arc-shaped flow channels 31 are connected to the extension cavity 30. The extension cavity 30 and the multiple arc-shaped flow channels 31 are detachably and fixedly connected to a mesh cover plate 32. The arc-shaped flow channels 31 and the mesh cover plate 32 are alternately distributed with the grinding roller 24 to guide the flow of coolant. At the same time, they can continuously spray the grinding position to quickly wash away the debris and avoid the accumulation of debris affecting the grinding effect.

[0045] The transmission assembly is used to drive the grinding rollers 24 to rotate; when the multiple grinding rollers 24 rotate, they can grind the surface of the cast steel parts. Compared with the traditional grinding disc directly grinding, it can avoid the grinding parts from being in continuous contact with the cast steel parts for a long time, thereby effectively reducing the heat generated by grinding; at the same time, the multiple grinding rollers 24 have a larger surface area than the grinding disc, and their service life is longer than that of the traditional grinding disc.

[0046] The liquid supply assembly is used to deliver grinding coolant to the bottom cylinder 10.

[0047] Furthermore, an impeller 23 is fixedly installed inside the bottom cylinder 10. A water outlet 29 is opened in the middle of the impeller 23, and the bottom end of the water outlet 29 is connected to the extension cavity 30. The impeller 23 can rotate quickly with the drive motor 11, thereby accelerating the coolant entering the bottom cylinder 10, increasing its flow rate, and improving the cooling effect on the grinding roller 24.

[0048] Furthermore, reinforcing side arms 19 are fixed on both sides of the outer peripheral wall of the motor mounting plate 18, and stiffening ribs 22 are fixedly installed at the middle ends of the two reinforcing side arms 19. The adapter cylinder 33 is fixedly installed on the opposite side of the two stiffening ribs 22. The adapter cylinder 33 is rotatably installed on the outer wall of the extension shaft 12 through a sealed bearing. The reinforcing side arms 19 and stiffening ribs 22 are used to provide a support base for the adapter cylinder 33.

[0049] As a further embodiment of the present invention, the liquid supply assembly includes a pair of mounting seats 14 fixedly installed on both sides of the mounting plate 8, and a pair of connecting seats 16 fixed on the outer peripheral wall of the adapter cylinder 33. The mounting seats 14 and the connecting seats 16 are rotatably mounted with cross connecting rods 13 through a movable shaft, and the cross connecting rods 13 are all provided with hollow tube grooves 131 inside.

[0050] Furthermore, a corrugated hose 15 is inserted into the hollowed-out tube groove 131. One end of the corrugated hose 15 is fixedly connected to the adapter cylinder 33. An infusion channel 121 is opened on the extension shaft 12. An integrally connected branch port 122 is provided at the bottom end of the infusion channel 121. The top ends of the two corrugated hoses 15 are fixedly connected to a diversion pipe 17. The diversion pipe 17 is fixedly connected to an external liquid supply system. Through the above structure, the liquid supply assembly forms a closed-loop liquid supply through the hollowed-out tube groove 131, the corrugated hose 15 and the infusion channel 121 of the extension shaft 12 built into the cross link 13. The coolant can be accurately delivered to the inside of the bottom cylinder 10.

[0051] On the other hand, the rotational engagement of the corrugated hose 15 and the cross linkage 13, as well as the support of the auxiliary guide rail 37 for the diversion pipe 17, ensure that the liquid supply system does not entangle or fall off when the grinding components move, thereby improving the stability of equipment operation.

[0052] Furthermore, the transmission assembly includes a transmission gear ring 26 coaxially arranged with the bottom cylinder 10. One end of each grinding roller 24 extends movably through to the outside of the bottom cylinder 10, and a transmission gear 25 is fixedly installed at one end of each grinding roller 24. The transmission gear 25 meshes with the transmission gear ring 26. The transmission assembly achieves synchronous rotation of multiple grinding rollers 24 through the meshing of the transmission gear ring 26 with multiple transmission gears 25. This, combined with the overall rotation of the bottom cylinder 10, forms a composite grinding action of "revolution + rotation", improving grinding uniformity and efficiency.

[0053] Furthermore, the moving assembly includes a pair of guide rails 1 4 fixedly mounted on the top of the top frame 3. Each guide rail 1 4 is fitted with an electric slider 6. The two electric sliders 1 6 are fixedly connected to a guide rail 2 5. An electric slider 2 7 is fitted on the guide rail 2 5. The bottom of the electric slider 2 7 is fixedly connected to the mounting plate 8. An auxiliary guide rail 37 is fixedly mounted on the top of the guide rail 2 5. A support slider 38 is slidably mounted on the auxiliary guide rail 37. The top of the support slider 38 is fixedly connected to the diverter pipe 17. The moving assembly adopts a cross structure of guide rail 1 4, electric slider 1 6 and guide rail 2 5, electric slider 2 7, which can realize the omnidirectional movement of the grinding assembly on the horizontal plane and adapt to the grinding needs of cast steel parts of different sizes and shapes.

[0054] Furthermore, multiple guide cylinders 20 are fixed at equal intervals on the bottom side of the mounting plate 8, and multiple guide posts 21 are fixed on the top of the motor mounting base plate 18. The guide posts 21 and the guide cylinders 20 slide in the vertical direction. The motor mounting base plate 18 slides in the guide cylinders 20 of the mounting plate 8 through the guide posts 21, which in turn strengthens the side arm 19 and the reinforcing ribs 22, ensuring that the grinding assembly rises and falls vertically when the electric telescopic rod 9 is driven, and avoiding deviation.

[0055] Furthermore, each of the bottom cylinders 10 has a connecting cavity 27 near the groove opening 39. The connecting cavity 27 has an L-shaped structure, and the bottom end of the connecting cavity 27 has a spray hole 28 that communicates with the groove opening 39. The spray hole 28 has a conical structure. Through the above structure, the conical spray hole 28 faces the grinding roller 24 directly. Combined with the impeller 23 to accelerate the flow rate of the coolant, the cooling is more targeted and effectively reduces the impact of high grinding temperature on the cast steel parts and the grinding roller 24.

[0056] The specific working method is as follows: When in use, the external liquid supply system is connected to the liquid supply circuit through the diversion pipe 17. The diversion pipe 17 is supported by the support slider 38 on the auxiliary guide rail 37 to ensure stable position during movement. According to the grinding position requirements of the cast steel parts, the moving components are activated: the electric slider 6 moves laterally along the guide rail 4, driving the guide rail 5 to adjust its position as a whole; the electric slider 7 moves longitudinally along the guide rail 5, driving the mounting plate 8 and the grinding components below to be precisely positioned in the grinding area. The drive motor 11 is activated, and its output shaft drives the extension shaft 12 and the bottom cylinder 10 to rotate synchronously. When the bottom cylinder 10 rotates, the transmission gear ring 26 meshes with the transmission gear 25 at the end of each grinding roller 24, driving the grinding roller 24 to rotate around its own axis, forming a compound grinding motion. The electric telescopic rod 9 is controlled to extend, pushing the motor mounting plate 18, the drive motor 11 and the bottom cylinder 10 to move downward until the grinding roller 24 contacts the surface of the cast steel parts to perform the grinding operation.

[0057] When the external liquid supply system is activated, the coolant is diverted through the distributor pipe 17 to two corrugated hoses 15. The corrugated hoses 15 are transported along the hollowed-out groove 131 of the cross connecting rod 13 to the adapter cylinder 33. The adapter cylinder 33 is connected to the extension shaft 12 through a sealed bearing. The coolant enters the liquid delivery channel 121 of the extension shaft 12 from the adapter cylinder 33, and then flows into the bottom cylinder 10 through the branch port 122. When the bottom cylinder 10 rotates, it drives the internal impeller 23 to rotate synchronously. The impeller 23 accelerates the flow of coolant, so that the coolant enters the extension cavity 30 through the drain port 29, and then is dispersed to each connecting cavity 27 through the arc-shaped flow channel 31. Finally, the coolant is precisely sprayed onto the contact part between the grinding roller 24 and the cast steel part through the conical spray hole 28 at the bottom of the L-shaped connecting cavity 27 to achieve cooling and temperature reduction, while washing away the debris generated during grinding.

[0058] During the grinding process, if the grinding position needs to be adjusted, it can be adjusted in real time by the electric slider 6 and electric slider 7 of the moving component. The cross linkage 13 rotates on the mounting base 14 and the connecting base 16 through the movable shaft, and in conjunction with the extension and retraction of the corrugated hose 15, it ensures that the liquid supply is continuous and without tangling. The sliding cooperation between the guide column 21 and the guide cylinder 20 ensures that the grinding component always maintains a vertical posture when it is raised, lowered and moved, and avoids uneven grinding caused by the tilting of the grinding roller 24. Example 2

[0059] like Figure 11As shown, the difference between this second embodiment and the first embodiment is that a return spring 34 is fixedly installed at the port of the infusion channel 121. To avoid corrosion, the return spring 34 is made of austenitic stainless steel. A sealing block 35 is fixedly connected to the end of the return spring 34. A pair of guide rods 36 are fixedly connected to the sealing block 35. The guide rods 36 slide in the horizontal direction with the extension shaft 12. Through the above design, the sealing block 35 automatically seals the port of the infusion channel 121 through the return spring 34 to prevent coolant leakage when the machine stops. At the same time, the guide rods 36 ensure the precise movement of the sealing block 35. Finally, during grinding, the higher the rotation speed, the greater the centrifugal force generated, which makes the gap between the sealing block 35 and the infusion channel 121 larger, increasing the flow rate of coolant. In summary, using this design, the cooling effect can be adaptively improved according to the grinding speed.

[0060] Finally, after the polishing is completed, the drive motor 11 and the liquid supply system are turned off. The electric telescopic rod 9 retracts, causing the polishing assembly to reset. The sealing block 35 at the port of the liquid infusion channel 121 closes under the elastic force of the reset spring 34 to prevent residual coolant leakage.

[0061] The foregoing description enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A polishing device for producing cast steel parts, comprising a base frame (1), a supporting stand (2) is fixed at the corner of the base frame (1), and a top frame (3) is fixed on the supporting stand (2), characterized in that, Also includes: A movable component is disposed on the top frame (3); A grinding assembly is mounted on a movable assembly. The grinding assembly includes a mounting plate (8), an electric telescopic rod (9) is fixed to the bottom side of the mounting plate (8), a motor mounting base plate (18) is fixed to the extension end of the electric telescopic rod (9), a drive motor (11) is fixedly mounted on the bottom side of the motor mounting base plate (18), an extension shaft (12) is fixedly connected to the output shaft of the drive motor (11), and an integral bottom end cylinder (10) is provided at the bottom of the extension shaft (12). The bottom end cylinder (10) has multiple equally spaced grooves (39) on its bottom side, and a grinding roller (24) is rotatably mounted in each groove (39). The bottom of the bottom cylinder (10) is provided with an extension cavity (30) and multiple arc-shaped flow channels (31). The multiple arc-shaped flow channels (31) are connected to the extension cavity (30). The extension cavity (30) and the multiple arc-shaped flow channels (31) are detachably and fixedly connected to a mesh cover plate (32). A transmission assembly for driving the grinding roller (24) to rotate; A liquid supply assembly for supplying grinding coolant to the bottom end cylinder (10); An impeller (23) is fixedly installed inside the bottom end cylinder (10). A drain outlet (29) is opened at the middle end of the impeller (23). The bottom end of the drain outlet (29) is connected to the extension cavity (30). Reinforcing side arms (19) are fixed on both sides of the outer peripheral wall of the motor mounting plate (18). A reinforcing rib (22) is fixedly installed at the middle end of the two reinforcing side arms (19). A transition cylinder (33) is fixedly installed on the opposite side of the two reinforcing ribs (22). The transition cylinder (33) is rotatably installed on the outer wall of the extension shaft (12) through a sealed bearing. The transmission assembly includes the bottom end cylinder. (10) A transmission gear ring (26) is coaxially arranged. One end of each of the grinding rollers (24) extends through to the outside of the bottom cylinder (10). A transmission gear (25) is fixedly installed at one end of each grinding roller (24). The transmission gear (25) meshes with the transmission gear ring (26). A connecting cavity (27) is provided at the position of the bottom cylinder (10) near the groove opening (39). The connecting cavity (27) has an L-shaped structure. A spray hole (28) connected to the groove opening (39) is provided at the bottom end of the connecting cavity (27). The spray hole (28) has a conical structure.

2. The polishing device for producing a cast steel member according to claim 1, characterized by: The liquid supply assembly includes a pair of mounting seats (14) fixedly installed on both sides of the mounting plate (8). A pair of connecting seats (16) are fixed on the outer peripheral wall of the adapter cylinder (33). The mounting seats (14) and connecting seats (16) are rotatably mounted with cross connecting rods (13) through a movable shaft. The cross connecting rods (13) are all provided with hollow tube grooves (131).

3. The polishing device for producing a cast steel piece according to claim 2, characterized in that: A corrugated hose (15) is inserted into the hollowed-out tube groove (131). One end of the corrugated hose (15) is fixedly connected to the adapter tube (33). An infusion channel (121) is opened on the extension shaft (12). An integrally connected branch port (122) is provided at the bottom end of the infusion channel (121). The top ends of the two corrugated hoses (15) are fixedly connected to a diversion pipe (17). The diversion pipe (17) is fixedly connected to an external liquid supply system.

4. The polishing device for producing a cast steel member according to claim 3, characterized by: The moving component includes a pair of guide rails (4) fixedly installed on the top of the top frame (3). Electric sliders (6) are adapted to be installed in both guide rails (4). A guide rail (5) is fixedly connected between the two electric sliders (6). An electric slider (7) is adapted to be installed on the guide rail (5). The bottom of the electric slider (7) is fixedly connected to the mounting plate (8). An auxiliary guide rail (37) is fixedly installed on the top of the guide rail (5). A support slider (38) is slidably installed on the auxiliary guide rail (37). The top of the support slider (38) is fixedly connected to the diversion pipe (17).

5. The polishing device for producing a cast steel member according to claim 1, characterized by: The mounting plate (8) has multiple guide cylinders (20) that are evenly distributed on its bottom side, and the motor mounting base plate (18) has multiple guide posts (21) that are fixed on its top. The guide posts (21) and the guide cylinders (20) slide in the vertical direction.

6. The polishing device for producing a cast steel piece according to claim 3, characterized in that: A reset spring (34) is fixedly installed at the port of the infusion channel (121). A sealing block (35) is fixedly connected to the end of the reset spring (34). A pair of guide rods (36) are fixedly connected to the sealing block (35). The guide rods (36) and the extension shaft (12) slide in the horizontal direction.

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