Positioning and polishing structure for gray iron casting

Abstract

The invention relates to the technical field of gray iron casting polishing, and particularly discloses a positioning and polishing structure for gray iron castings, which comprises a base, blanking parts are fixedly connected to two sides of the base, polishing parts are fixedly connected to the middle parts of the side surfaces of the two blanking parts, and a transmission part is fixedly connected to the inner side of the base; the collecting component is used for collecting chippings generated during grinding, and positioning components are fixedly connected to the two sides of the top of the collecting component; the positioning part comprises a positioning frame, a second driving part is fixedly connected to the side face of the positioning frame, three positioning shafts are evenly arranged on the side, away from the second driving part, of the positioning frame, one ends of the two positioning shafts located on the two sides are slidably connected with the positioning frame, and the end, close to the positioning frame, of the positioning shaft located in the middle is fixedly connected with the output end of the second driving part. The end, away from the positioning frame, of the positioning shaft is fixedly connected with a clamping mechanism. According to the device, gray iron castings of different shapes and sizes can be adaptively adjusted, and the device is high in universality, high in flexibility and high in automation degree.

Description

Technical Field

[0001] This invention relates to the field of gray iron casting grinding technology, specifically a positioning grinding structure for gray iron castings. Background Technology

[0002] Gray cast iron is a widely used cast iron material, named for its dark gray fracture surface. It has an iron matrix, a high carbon content, and contains elements such as silicon, manganese, sulfur, and phosphorus. The carbon primarily exists in the form of flake graphite, a microstructure that determines its unique properties and applications. Gray cast iron castings are widely used in machinery manufacturing, the automotive industry, and machine tool equipment due to their excellent shock absorption, wear resistance, and casting performance. During the production process, gray cast iron castings often exhibit defects such as burrs, flash, unevenness, and residual gating gates. These defects not only affect the appearance quality of the castings but can also lead to reduced assembly accuracy, impaired performance, and even safety hazards. Therefore, grinding is a crucial process for ensuring the quality of gray cast iron castings.

[0003] In the grinding and processing of gray iron castings, the accuracy of positioning directly affects the grinding precision and efficiency. In the early days, the grinding of gray iron castings was mostly done manually by hand with grinding tools. Operators relied on experience to position and grind the gray iron castings. This method has obvious drawbacks, such as high labor costs, low automation, and low efficiency. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a positioning and grinding structure for gray iron castings, which is achieved through the following technical solution: A positioning and grinding structure for gray iron castings, comprising: The base has a feeding component fixedly connected to both sides, a grinding component fixedly connected to the middle of the sides of the two feeding components, and a transmission component fixedly connected to the inner side of the base. A collecting component is used to collect the debris generated during grinding. Positioning components are fixedly connected to both sides of the top of the collecting component. The transmission component includes a lead screw and two guide rods. Both ends of the lead screw are rotatably connected to the inner side of the base. A drive component is fixedly connected to one side of the base. The output end of the drive component is fixedly connected to one end of the lead screw. Both ends of the two guide rods are fixedly connected to the inner side of the base. The positioning component includes a positioning frame, a driving component two is fixedly connected to the side of the positioning frame, and three positioning shafts are evenly arranged on the side of the positioning frame away from the driving component two. One end of the two positioning shafts on both sides is slidably connected to the positioning frame, and the end of the positioning shaft in the middle that is close to the positioning frame is fixedly connected to the output end of the driving component two. A clamping mechanism is fixedly connected to the end of the positioning shaft that is away from the positioning frame.

[0005] Preferably, the clamping mechanism includes a clamping frame, a second lead screw is rotatably connected to the inner side of the clamping frame, a knob is rotatably connected to one side of the clamping frame, one end of the second lead screw is fixedly connected to the knob near the side of the clamping frame, clamping plates are slidably connected to both sides of the inner cavity of the clamping frame, and inclined blocks are fixedly connected to the sides of both clamping plates.

[0006] Preferably, the side of the clamping frame away from the clamping plate is fixedly connected to the end of the positioning shaft away from the positioning frame, and the inner side of the clamping plate is threadedly connected to the side of the lead screw.

[0007] Preferably, the collecting component includes a collecting shell, a mesh plate is fixedly connected to the top of the collecting shell, a feeding trough is provided on both sides of the collecting shell, a plurality of suction machines are evenly arranged at the bottom of the inner cavity of the collecting shell, the suction machines are fixedly connected to the bottom of the inner cavity of the collecting shell, a guide plate is fixedly connected to the top of the suction machine, and a contact mechanism is slidably connected to the bottom of the mesh plate.

[0008] Preferably, the middle of the bottom of the collecting shell is threadedly connected to the side of the lead screw via a slider, the two sides of the bottom of the collecting shell are slidably connected to the sides of the two guide rods via sliders, the bottom of the collecting shell is slidably connected to the top of the base, the top of the mesh plate is fixedly connected to the bottom of the positioning frame, the top of the mesh plate is slidably connected to the bottom of the clamping frame, and the guide plate is shaped with a high center and low sides.

[0009] Preferably, the contact mechanism includes a contact rod, with several connecting rods rotatably connected to both sides of the contact rod. An upper cleaning plate is rotatably connected to the end of each connecting rod away from the contact rod. Two connecting rods are rotatably connected to both sides of the middle of the contact rod, with a lower cleaning plate rotatably connected to the end of each connecting rod away from the contact rod. Several sliding rods are evenly arranged on the top of the contact rod, with the bottom of each sliding rod fixedly connected to the top of the contact rod. A connecting spring is sleeved on each sliding rod.

[0010] Preferably, the top of the upper cleaning plate is slidably connected to the bottom of the mesh plate, the bottom of the lower cleaning plate is slidably connected to the top of the guide plate, the top of the sliding rod is slidably connected to the bottom of the mesh plate, the top of the connecting spring is fixedly connected to the bottom of the mesh plate, and the bottom of the connecting spring is fixedly connected to the top of the contact rod.

[0011] Preferably, the feeding component includes a feeding shell, a driving component three is fixedly connected to the side of the feeding shell, and a screw rod is rotatably connected to the inner side of the feeding shell, with one end of the screw rod fixedly connected to the output end of the driving component three.

[0012] Preferably, the two sides of the feeding shell are fixedly connected to the two sides of the base, the top of the feeding shell near the base is flush with the bottom of the feeding groove, and the feeding shell has a discharge groove on the side away from the driving component.

[0013] The positioning and grinding structure for gray iron castings provided by this invention has the following beneficial effects: 1. This positioning and grinding structure for gray iron castings features a clamping mechanism with stepless adjustment of the clamping plate via a screw drive. It can accommodate rectangular gray iron castings of different sizes, and the face-to-face contact design increases the contact area, preventing excessive local stress that could lead to deformation of the gray iron casting. It also ensures no lateral slippage of the gray iron casting after clamping, improving positioning accuracy. By incorporating inclined blocks on the side of the clamping plate, the clamping mechanism can adapt to gray iron castings of different shapes, offering strong versatility, high flexibility, and a high degree of automation.

[0014] 2. This positioning and grinding structure for gray iron castings, by setting up a collection component and adopting an inclined structure design of "high in the middle and low on both sides" for the guide plate, allows continuously accumulating debris to slide naturally down the inclined surface and finally be discharged from the collection shell through the discharge chute and enter the discharge component for centralized recycling. The inclined design of the guide plate assists the movement of debris, avoids debris accumulation and blockage in the collection shell, ensures smooth discharge, and achieves continuous debris collection.

[0015] 3. This positioning and grinding structure for gray iron castings, by setting a contact mechanism, can promptly clear the screen plate and maintain stable suction by cleaning the contact mechanism; while cleaning the top of the guide plate can prevent debris from sticking together and ensure smooth tilting and sliding, further ensuring the long-term efficient operation of the collection component, reducing downtime maintenance time caused by equipment blockage, and improving the continuity of the overall grinding operation.

[0016] 4. This positioning and grinding structure for gray iron castings, by setting up a feeding component and flush setting the feeding shell with the feeding trough, eliminates the height difference and gap of falling debris, reduces the residue and jamming of debris at the connection, ensures that debris can smoothly enter the collection channel, realizes "in and out", and ensures that debris will not accumulate in the feeding shell. Attached Figure Description

[0017] Figure 1 This invention provides a schematic diagram of a positioning and grinding structure for gray iron castings. Figure 2Axonometric view of a positioning and grinding structure for gray iron castings provided by the present invention; Figure 3 This is a schematic diagram of the transmission component in this invention; Figure 4 This is a schematic diagram of the positioning component in this invention; Figure 5 This is a schematic diagram of the positioning frame in this invention; Figure 6 This is a schematic diagram of the clamping mechanism in this invention; Figure 7 This is a schematic diagram of the structure of the collecting component in this invention; Figure 8 This is a schematic diagram of the structure of the outer casing in this invention; Figure 9 This is a schematic diagram of the contact mechanism in this invention; Figure 10 For the present invention Figure 9 Enlarged structural diagram at point A; Figure 11 This is a schematic diagram of the feeding component in this invention.

[0018] In the diagram: 1. Base; 2. Grinding component; 3. Collection component; 31. Collection shell; 32. Feeding trough; 33. Suction machine; 34. Guide plate; 35. Contact mechanism; 351. Contact rod; 352. Connecting rod one; 353. Upper cleaning plate; 354. Connecting rod two; 355. Lower cleaning plate; 356. Sliding rod; 357. Connecting spring; 36. Mesh plate; 4. Feeding component; 41. Feeding shell; 42. Drive component three; 43. Spiral rod; 5. Transmission component; 51. Drive component one; 52. Lead screw one; 53. Guide rod; 6. Positioning component; 61. Positioning frame; 62. Drive component two; 63. Positioning shaft; 64. Clamping mechanism; 641. Clamping frame; 642. Lead screw two; 643. Knob; 644. Clamping plate; 645. Inclined block. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0020] Please see Figures 1-2 This invention provides a positioning and grinding structure for gray iron castings, comprising: The base 1 has a feeding component 4 fixedly connected to both sides of the base 1, a grinding component 2 fixedly connected to the middle of the sides of the two feeding components 4, and a transmission component 5 fixedly connected to the inner side of the base 1. The collecting component 3 is used to collect the debris generated during grinding. Positioning components 6 are fixedly connected to both sides of the top of the collecting component 3.

[0021] Please see Figures 1-3 The transmission component 5 includes a lead screw 52 and two guide rods 53. Both ends of the lead screw 52 are rotatably connected to the inner side of the base 1. A drive component 51 is fixedly connected to one side of the base 1. The output end of the drive component 51 is fixedly connected to one end of the lead screw 52. Both ends of the two guide rods 53 are fixedly connected to the inner side of the base 1. After the drive unit 51 is turned on, its conveying end will drive the lead screw 52 to rotate inside the base 1. Then, through the transmission action of the lead screw 52, ​​the collection component 3, which contains the gray iron casting, will move smoothly along the base 1 and finally reach the bottom of the grinding component 2, preparing for the subsequent grinding operation.

[0022] Please see Figures 1-5 The positioning component 6 includes a positioning frame 61. A second driving component 62 is fixedly connected to the side of the positioning frame 61. Three positioning shafts 63 are evenly arranged on the side of the positioning frame 61 away from the second driving component 62. One end of the two positioning shafts 63 on both sides is slidably connected to the positioning frame 61. The end of the middle positioning shaft 63 near the positioning frame 61 is fixedly connected to the output end of the second driving component 62. A clamping mechanism 64 is fixedly connected to the end of the positioning shaft 63 away from the positioning frame 61. Place the gray iron casting on top of the collecting component 3. First, adjust the clamping mechanism 64 according to the shape of the gray iron casting. Then, start the second drive component 62 on the two positioning frames 61 respectively. The output end of the second drive component 62 will drive the clamping mechanism 64 to clamp and position the gray iron casting through the positioning shaft 63.

[0023] Please see Figures 1-6 The clamping mechanism 64 includes a clamping frame 641. A second lead screw 642 is rotatably connected to the inner side of the clamping frame 641. A knob 643 is rotatably connected to one side of the clamping frame 641. One end of the second lead screw 642 is fixedly connected to the side of the knob 643 near the clamping frame 641. Clamping plates 644 are slidably connected to both sides of the inner cavity of the clamping frame 641. Inclined blocks 645 are fixedly connected to the sides of both clamping plates 644. The side of the clamping frame 641 away from the clamping plates 644 is fixedly connected to the end of the positioning shaft 63 away from the positioning frame 61. The inner side of the clamping plates 644 is threadedly connected to the side of the second lead screw 642. The clamping mechanism 64 can be adaptively adjusted to achieve positioning of gray iron castings of different shapes, specifically: When clamping a rectangular gray iron casting, since its side is a straight surface, first turn the knob 643. The knob 643 drives the lead screw 642 to rotate inside the clamping frame 641, which in turn drives the two clamping plates 644 to move relative to each other on the clamping frame 641, so that the straight surface of the clamping frame 641 matches the side of the rectangular gray iron casting. Then, the drive component 62 on the two positioning frames 61 is activated, and its output end drives the clamping frame 641 to move towards the gray iron casting through the positioning shaft 63. Finally, the two clamping plates 644 form a stable clamp for the rectangular gray iron casting. When clamping a circular gray iron casting, the knob 643 is rotated, which drives the two clamping plates 644 to move via the lead screw 642. This causes the inclined blocks 645 on the sides of the clamping plates 644 to move closer or further away from each other on the clamping frame 641 until the inclined surface of the inclined blocks 645 matches the arc surface of the circular gray iron casting. At this point, the four clamping plates 644 on both sides drive the inclined surfaces of the inclined blocks 645 to evenly abut against the arc surface of the circular gray iron casting, forming a stable clamping. The fit design of the inclined surfaces of the inclined blocks 645 against the arc surface can disperse the clamping force through multi-point contact, preventing the circular gray iron casting from deforming due to excessive force at a single point. At the same time, the symmetrical distribution of the four inclined blocks 645 can automatically center the circular gray iron casting, ensuring that its axis is consistent with the machining datum, and improving the coaxiality accuracy of subsequent grinding. The clamping mechanism 64 can be easily adjusted to accommodate both rectangular and round gray iron castings, reducing the cost of replacing special fixtures, shortening changeover time, and improving production efficiency.

[0024] Please see Figures 1-8 The collecting component 3 includes a collecting shell 31. The middle of the bottom of the collecting shell 31 is threadedly connected to the side of the lead screw 52 via a slider. The two sides of the bottom of the collecting shell 31 are slidably connected to the sides of two guide rods 53 via sliders. The bottom of the collecting shell 31 is slidably connected to the top of the base 1. A mesh plate 36 is fixedly connected to the top of the collecting shell 31. A feeding groove 32 is provided on both sides of the collecting shell 31. Several suction machines 33 are evenly arranged at the bottom of the inner cavity of the collecting shell 31. The suction machines 33 are fixedly connected to the bottom of the inner cavity of the collecting shell 31. A guide plate 34 is fixedly connected to the top of the suction machine 33. The guide plate 34 is shaped with a high middle and low sides. The top of the mesh plate 36 is fixedly connected to the bottom of the positioning frame 61. The top of the mesh plate 36 is slidably connected to the bottom of the clamping frame 641. A contact mechanism 35 is slidably connected to the bottom of the mesh plate 36. When grinding gray iron castings, after the suction fan 33 is turned on, the negative pressure suction generated will suck the iron filings, dust and other debris generated during grinding into the collection shell 31 through the mesh plate 36. The debris first falls onto the guide plate 34. Since the guide plate 34 adopts an inclined structure design with "high in the middle and low on both sides", the continuously accumulated debris will slide down naturally along the inclined surface and finally be discharged from the collection shell 31 through the discharge chute 32 and enter the discharge component 4 to complete centralized recycling. At the same time, when the suction machine 33 increases its suction power, the contact mechanism 35 will move towards the bottom of the mesh plate 36 and the top of the guide plate 34 under the action of suction to perform contact cleaning on the surfaces of both.

[0025] Please see Figures 1-10 The contact mechanism 35 includes a contact rod 351. Several connecting rods 352 are rotatably connected to both sides of the contact rod 351. An upper cleaning plate 353 is rotatably connected to the end of the connecting rod 352 away from the contact rod 351. The top of the upper cleaning plate 353 is slidably connected to the bottom of the mesh plate 36. Connecting rods 354 are rotatably connected to both sides of the middle part of the contact rod 351. A lower cleaning plate 355 is rotatably connected to the end of the connecting rod 354 away from the contact rod 351. The bottom of the lower cleaning plate 355 is slidably connected to the top of the guide plate 34. Several sliding rods 356 are evenly arranged on the top of the contact rod 351. The top of the sliding rods 356 is slidably connected to the bottom of the mesh plate 36. The bottom of the sliding rods 356 is fixedly connected to the top of the contact rod 351. A connecting spring 357 is sleeved on the sliding rod 356. The top of the connecting spring 357 is fixedly connected to the bottom of the mesh plate 36. The bottom of the connecting spring 357 is fixedly connected to the top of the contact rod 351. By increasing the suction power of the suction machine 33, when the suction power is greater than the tensile force of the connecting spring 357, the contact rod 351 will drive the multiple sliding rods 356 at the top to move downward. At this time, the connecting rods 352 on both sides of the contact rod 351 will move in tandem, thereby driving the upper cleaning plate 353 to slide at the bottom of the mesh plate 36, realizing contact cleaning of the bottom of the mesh plate 36. The upper cleaning plate 353 can promptly remove the fine iron filings and dust attached to the holes of the mesh plate 36, avoiding the mesh plate 36 from becoming clogged and causing suction power to decrease. This ensures that the suction machine 33 can continuously and efficiently capture grinding debris, reducing downtime maintenance caused by the mesh plate 36 not being cleaned in time. Simultaneously, when the contact rod 351 moves downward, it will drive the connecting rods 354 on both sides to move synchronously, causing the two lower cleaning plates 355 to move from the guide plate 34. On the one hand, the debris gathered on the guide plate 34 is pushed to the two side discharge troughs 32, and on the other hand, the top of the guide plate 34 is thoroughly cleaned. The pushing action of the lower cleaning plate 355 can prevent debris from sticking and clumping on the guide plate 34, preventing the accumulation from hindering the subsequent sliding of debris. At the same time, the direct cleaning of the guide plate 34 can keep its surface smooth, ensure the stability of the gravity sliding function, and avoid debris blockage affecting ventilation and collection efficiency. When the suction machine 33 is turned off or the suction is reduced, and the suction disappears or weakens, the contact rod 351, under the reset force of the connecting spring 357, slides upward through the sliding rod 356 to reset. During the reset process, the connecting rod 1 352 and the connecting rod 2 354 respectively drive the upper cleaning plate 353 and the lower cleaning plate 355 to slide in opposite directions at the bottom of the mesh plate 36 and the top of the guide plate 34 to achieve secondary cleaning. The reverse sliding can further remove residual fine debris and consolidate the cleaning effect.

[0026] Please see Figures 1-11 The feeding component 4 includes a feeding shell 41. The sides of the two feeding shells 41 are fixedly connected to the two sides of the base 1 respectively. The top of the feeding shell 41 near the base 1 is flush with the bottom of the feeding groove 32. The feeding shell 41 has a discharge groove on the side away from the driving component 3 42. The driving component 3 42 is fixedly connected to the side of the feeding shell 41. A screw rod 43 is rotatably connected to the inside of the feeding shell 41. One end of the screw rod 43 is fixedly connected to the output end of the driving component 3 42. The top of the unloading housing 41 near the base 1 is flush with the bottom of the unloading trough 32. When the gray iron casting is polished and produces chips, the chips can fall directly into the unloading housing 41 through the unloading trough 32, avoiding the accumulation of chips at the connection due to the height difference. Then, the drive component 3 42 is turned on, and its output end drives the spiral rod 43 to rotate inside the unloading housing 41. Through the pushing action of the spiral blades, the chips that continuously enter the unloading housing 41 are transported to the side away from the drive component 3 42, and finally discharged in time through the discharge trough at the end of the unloading housing 41. The flush arrangement of the discharge housing 41 and the discharge trough 32 eliminates the height difference and gaps in the falling debris, reduces debris residue and jamming at the connection, and ensures that the debris can smoothly enter the collection channel. The rotating conveying method of the screw rod 43 can form a continuous and uniform pushing force on the debris, which is especially suitable for mixed debris containing dust and blocky iron filings generated from the grinding of gray iron castings, avoiding the clogging problem that is easy to occur in traditional gravity feeding. The screw conveyor driven by the drive component 3 42 can realize "in and out", ensuring that the debris will not accumulate in the discharge housing 41, ensuring the continuous operation of the collection component 3, and reducing downtime for cleaning due to debris accumulation, thus improving overall production efficiency.

[0027] Specific workflow: After the transmission component 5 is activated, it will drive the collecting component 3 and the positioning component 6 to move synchronously on the base 1. After adjusting to the operating position suitable for the gray iron casting, the gray iron casting is placed between the two positioning components 6 and fastened by the clamping mechanism 64 of the positioning component 6. Subsequently, the transmission component 5 continues to drive the collecting component 3 and the positioning component 6 to move until the gray iron casting arrives directly below the grinding component 2; At this time, the grinding component 2 is activated to grind the positioned gray iron casting. At the same time, the collecting component 3 is activated to collect the grinding debris in real time. Finally, the collected debris will fall into the unloading component 4 for centralized discharge.

[0028] In actual operation, before the gray iron casting arrives at the grinding area, the grinding component 2 uses a built-in sensor to align and calibrate with the part of the gray iron casting to be ground, ensuring the perpendicularity of the grinding head axis to the target area. During grinding, the drive motor automatically adjusts the grinding head speed according to the grinding requirements of the gray iron casting. The lifting and adjusting mechanism of the grinding component 2 drives the grinding head to feed vertically via a servo motor. At the same time, a pressure sensor monitors the contact force between the grinding head and the surface of the gray iron casting in real time. If hard spots or gray iron castings are encountered, the pressure sensor will detect them. For parts with local protrusions, the feed pressure is automatically fine-tuned to avoid excessive grinding that could cause the gray iron casting to crack. For complex gray iron castings with curved surfaces, corners, or deep grooves, the angle fine-tuning device of the grinding component 2 allows the grinding head to swing within an appropriate range. Combined with the horizontal movement of the transmission component 5, this achieves full coverage grinding of all surfaces to be processed on the gray iron casting. When the grinding head completes the preset path, the displacement sensor detects that the feed amount has reached the preset value. The grinding component 2 automatically stops operating and raises the grinding head to a safe height, waiting for the next work instruction.

[0029] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A positioning and grinding structure for gray iron castings, characterized in that, include: The base (1) has a feeding component (4) fixedly connected to both sides of the base (1), a grinding component (2) fixedly connected to the middle of the sides of the two feeding components (4), and a transmission component (5) fixedly connected to the inner side of the base (1). Collection component (3) is used to collect the debris generated during grinding. Positioning components (6) are fixedly connected to both sides of the top of the collection component (3). The transmission component (5) includes a lead screw (52) and two guide rods (53). Both ends of the lead screw (52) are rotatably connected to the inner side of the base (1). A drive component (51) is fixedly connected to one side of the base (1). The output end of the drive component (51) is fixedly connected to one end of the lead screw (52). Both ends of the two guide rods (53) are fixedly connected to the inner side of the base (1). The positioning component (6) includes a positioning frame (61), a driving component two (62) is fixedly connected to the side of the positioning frame (61), and three positioning shafts (63) are evenly arranged on the side of the positioning frame (61) away from the driving component two (62). One end of the two positioning shafts (63) on both sides is slidably connected to the positioning frame (61), and the end of the positioning shaft (63) in the middle that is close to the positioning frame (61) is fixedly connected to the output end of the driving component two (62). The end of the positioning shaft (63) that is away from the positioning frame (61) is fixedly connected to a clamping mechanism (64).

2. The positioning and grinding structure for gray iron castings according to claim 1, characterized in that: The clamping mechanism (64) includes a clamping frame (641), a lead screw (642) is rotatably connected to the inner side of the clamping frame (641), a knob (643) is rotatably connected to one side of the clamping frame (641), one end of the lead screw (642) is fixedly connected to the knob (643) near the side of the clamping frame (641), and clamping plates (644) are slidably connected to both sides of the inner cavity of the clamping frame (641), and inclined blocks (645) are fixedly connected to the sides of both clamping plates (644).

3. The positioning and grinding structure for gray iron castings according to claim 2, characterized in that: The side of the clamping frame (641) away from the clamping plate (644) is fixedly connected to the end of the positioning shaft (63) away from the positioning frame (61), and the inner side of the clamping plate (644) is threadedly connected to the side of the lead screw (642).

4. The positioning and grinding structure for gray iron castings according to claim 3, characterized in that: The collecting component (3) includes a collecting shell (31), a mesh plate (36) is fixedly connected to the top of the collecting shell (31), a feeding trough (32) is provided on both sides of the collecting shell (31), a plurality of suction machines (33) are evenly arranged at the bottom of the inner cavity of the collecting shell (31), the suction machines (33) are fixedly connected to the bottom of the inner cavity of the collecting shell (31), a guide plate (34) is fixedly connected to the top of the suction machine (33), and a contact mechanism (35) is slidably connected to the bottom of the mesh plate (36).

5. The positioning and grinding structure for gray iron castings according to claim 4, characterized in that: The bottom center of the collecting shell (31) is connected to the side thread of the lead screw (52) via a slider. The two sides of the bottom of the collecting shell (31) are slidably connected to the sides of the two guide rods (53) via sliders. The bottom of the collecting shell (31) is slidably connected to the top of the base (1). The top of the mesh plate (36) is fixedly connected to the bottom of the positioning frame (61). The top of the mesh plate (36) is slidably connected to the bottom of the clamping frame (641). The guide plate (34) is high in the middle and low on both sides.

6. The positioning and grinding structure for gray iron castings according to claim 4, characterized in that: The contact mechanism (35) includes a contact rod (351), and several connecting rods (352) are rotatably connected to both sides of the contact rod (351). An upper cleaning plate (353) is rotatably connected to the end of the connecting rod (352) away from the contact rod (351). Two connecting rods (354) are rotatably connected to both sides of the middle part of the contact rod (351). A lower cleaning plate (355) is rotatably connected to the end of the connecting rod (354) away from the contact rod (351). Several sliding rods (356) are evenly arranged on the top of the contact rod (351). The bottom of the sliding rod (356) is fixedly connected to the top of the contact rod (351). A connecting spring (357) is sleeved on the sliding rod (356).

7. The positioning and grinding structure for gray iron castings according to claim 6, characterized in that: The top of the upper cleaning plate (353) is slidably connected to the bottom of the mesh plate (36), the bottom of the lower cleaning plate (355) is slidably connected to the top of the guide plate (34), the top of the sliding rod (356) is slidably connected to the bottom of the mesh plate (36), the top of the connecting spring (357) is fixedly connected to the bottom of the mesh plate (36), and the bottom of the connecting spring (357) is fixedly connected to the top of the contact rod (351).

8. The positioning and grinding structure for gray iron castings according to claim 4, characterized in that: The feeding component (4) includes a feeding shell (41), a driving component three (42) is fixedly connected to the side of the feeding shell (41), and a screw rod (43) is rotatably connected to the inner side of the feeding shell (41). One end of the screw rod (43) is fixedly connected to the output end of the driving component three (42).

9. The positioning and grinding structure for gray iron castings according to claim 8, characterized in that: The two feeding shells (41) are fixedly connected to the two sides of the base (1) respectively. The top of the feeding shell (41) near the base (1) is flush with the bottom of the feeding groove (32). The feeding shell (41) has a discharge groove on the side away from the drive component (42).

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