A casting polishing apparatus

Abstract

The utility model relates to polishing equipment technical field especially relates to a kind of casting polishing equipment, the utility model discloses casting polishing equipment adopts the polishing table structure design of can rotate, it is convenient to adjust the surface position required polishing in the process of casting and polishing, adaptation side polishing mechanism and the polishing demand of top polishing mechanism, and design is fixed polishing mechanism with top pressure driving mechanism and side polishing mechanism in triangular distribution, can realize the automatic positioning and rotation balance of entire casting, and such structural design makes casting when polishing around the rotation center of polishing table can constantly adjust polishing area, realize continuous polishing, the working end of side polishing mechanism can be close to or away from the center of polishing table, adaptation the polishing demand of the surface of different depth of casting, improve adaptability.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment technology, and in particular to a casting grinding equipment. Background Technology

[0002] After casting is completed and the casting cap is removed, the casting needs to be ground. This not only effectively removes burrs and sand holes, but also improves the appearance of the casting and facilitates subsequent processing. Current grinding requirements mainly involve semi-automated or fully automated designs, such as patent CN202011258955.9 – an automated grinding line for casting burrs. These existing technologies all use robotic arms for grinding. Although they can achieve multi-angle grinding and adapt to grinding operations on irregularly curved surfaces of castings, such technical solutions have high requirements for the control of the robotic arms, resulting in very high overall equipment and control costs.

[0003] To address the aforementioned issues, patent CN202322348390.9, "A Grinding and Polishing Equipment for Castings," describes a method that uses a surface grinding and polishing device, a feeding device, two sets of vertically arranged side grinding and polishing devices, and a transfer device to grind and polish the two surfaces and four sides (front, back, left, and right) of magnesium alloy die castings. This method polishes all surfaces of the magnesium alloy die castings without requiring manual movement, significantly improving grinding and polishing efficiency and effectively reducing the risk of scratches caused by manual movement. However, this grinding and polishing equipment still has a complex structure and is not flexible in the grinding process. It requires constant adjustment using the transfer device when grinding the surface of the casting, and both sets of vertically arranged side grinding and polishing devices and the surface grinding and polishing device need to be stopped midway, affecting the overall grinding efficiency of the casting. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a casting grinding equipment, including a frame, a side grinding mechanism, and a top grinding mechanism. A grinding table is rotatably mounted on the frame. A fixed grinding mechanism is provided on one side of the frame near the grinding table. Both the side grinding mechanism and the top grinding mechanism are vertically mounted on the frame. A telescopic top-pressure drive mechanism is provided on one side of the frame. The top-pressure drive mechanism is used to drive the casting on the grinding table to rotate together with the grinding table. The projections of the fixed grinding mechanism, the side grinding mechanism, and the top-pressure drive mechanism on the plane of the grinding table form a triangle, and the rotation center of the casting is located inside the triangle. During grinding, the fixed grinding mechanism, the side grinding mechanism, and the top-pressure drive mechanism all abut against the outer wall of the casting. The working end of the side grinding mechanism can be close to or far from the center of the grinding table.

[0005] In some possible embodiments, the top pressure drive mechanism includes a movable frame, a swing arm swayably mounted on the movable frame, and a driver mounted on the outward end of the swing arm. The movable frame is adjustablely mounted on the frame, and a telescopic cylinder is provided on the frame. The telescopic cylinder can drive the movable frame to move closer to or away from the rotation center of the grinding table. A drive wheel is provided at the output end of the driver, and the drive wheel can drive the casting to rotate together with the grinding table. A reset member is provided between the swing arm and the movable frame.

[0006] In some possible embodiments, the bottom of the movable frame is provided with a plurality of rollers, which are rotatably mounted on the frame.

[0007] In some possible embodiments, the movable frame is provided with driven wheels on both sides of the swing arm; during grinding, at least one of the two driven wheels can abut against the outer wall of the casting.

[0008] In some possible embodiments, the fixed grinding mechanism includes a grinding motor and a grinding wheel mounted on the rotating end of the grinding motor. The grinding motor is mounted on the frame, and the outer circumference of the grinding wheel can abut against the outer wall of the casting. The rotation center of the grinding wheel is parallel to the rotation center of the grinding table.

[0009] In some possible embodiments, the side grinding mechanism includes a frame, a first lifting cylinder, a first lifting frame, and a side grinding head. The frame is mounted on a machine frame and has a sliding groove. The first lifting frame is slidably mounted on the sliding groove and its lower end can be close to or away from the center of the grinding table. The first lifting cylinder is mounted on the frame and its telescopic end is connected to the first lifting frame. The side grinding head is mounted at the lower end of the first lifting frame.

[0010] In some possible embodiments, the upper end of the first lifting frame is provided with a sliding shaft, and two slide grooves are provided. The two ends of the sliding shaft are respectively slidably installed in the two slide grooves. A flat-push cylinder is hinged on the frame body. The telescopic end of the flat-push cylinder is hinged to the middle of the first lifting frame. The flat-push cylinder can drive the side grinding head to move closer to or away from the casting through the first lifting frame.

[0011] In some possible embodiments, the top grinding mechanism includes a bracket, a second lifting cylinder, a second lifting frame, and a top grinding head. The bracket is mounted on the frame in the area above the grinding table. The second lifting cylinder is mounted on the bracket. The second lifting frame is vertically slidable on the bracket. The second lifting cylinder can drive the second lifting frame to rise and fall. The top grinding head is mounted on the second lifting frame.

[0012] In some possible embodiments, a feeding conveying mechanism and a discharging mechanism are also included, which are respectively disposed on opposite sides of the frame. The fixed grinding mechanism and the top pressure driving mechanism are respectively disposed on both sides of the line connecting the feeding conveying mechanism and the discharging mechanism. The side grinding mechanism is disposed on the frame in the area where the discharging mechanism is located at the inlet end of the discharging mechanism.

[0013] In some possible embodiments, the feeding and conveying mechanism includes a conveyor line, a feeding cylinder mounted on a frame, and a sliding seat slidably mounted on the frame. The conveyor line is mounted on a corresponding side of the frame and can convey castings to the grinding table. The feeding cylinder is located above the conveyor line and its extension and retraction direction is parallel to the conveying direction of the conveyor line. The extension and retraction end of the feeding cylinder is hinged to the sliding seat. A push arm is hinged to the sliding seat and can swing relative to the sliding seat along the retraction direction of the feeding cylinder. A limit block is provided on the sliding seat, which can restrict the push arm from swinging from a vertical position to a horizontal position at the feeding end of the conveyor line. Guide rails are provided on both sides of the discharge end of the conveyor line, and one end of the guide rail extends towards the grinding table. The feeding cylinder can push the unprocessed castings on the conveyor line and feed them into the grinding table through the push arm.

[0014] Compared to existing technologies, the advantages of this invention are as follows: The casting grinding equipment of this invention adopts a rotatable grinding table structure design, which facilitates the adjustment of the surface position to be ground during the grinding process, adapting to the grinding needs of the side grinding mechanism and the top grinding mechanism. Furthermore, the triangularly distributed fixed grinding mechanism, in conjunction with the top-pressure drive mechanism and the side grinding mechanism, enables automatic positioning and rotational balance of the entire casting. This structural design allows the casting to continuously adjust the grinding area while grinding around the rotation center of the grinding table, achieving continuous grinding. The working end of the side grinding mechanism can be close to or far from the center of the grinding table, adapting to the grinding needs of surfaces of different depths on the casting and improving adaptability. The top-pressure drive mechanism drives the casting to rotate along with the grinding table. This structural design facilitates control of the casting's rotation speed and adapts to the positional distribution of the side grinding mechanism and the fixed grinding mechanism. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1A schematic diagram of the structure of the casting grinding equipment provided in this embodiment of the utility model;

[0017] Figure 2 A partial structural schematic diagram of the casting grinding equipment provided in this embodiment of the utility model;

[0018] Figure 3 A cross-sectional structural diagram of the side grinding machine provided in an embodiment of this utility model;

[0019] Figure 4 A partial structural schematic diagram of the top grinding mechanism provided in this embodiment of the utility model;

[0020] Figure 5 A schematic diagram of the structure of a casting grinding device provided in another embodiment of this utility model;

[0021] Figure 6 This is a schematic diagram of the feeding and conveying mechanism provided in an embodiment of the present utility model.

[0022] Figure label:

[0023] Frame 10, Grinding table 11;

[0024] Side grinding mechanism 20, frame 21, first lifting cylinder 22, first lifting frame 23, side grinding head 24, slide groove 25, sliding shaft 26, and flat push cylinder 27;

[0025] Top grinding mechanism 30, bracket 31, second lifting cylinder 32, second lifting frame 33, top grinding head 34, adjusting motor 35;

[0026] Fixed grinding mechanism 40, grinding motor 41, grinding wheel 42;

[0027] Top pressure drive mechanism 50, moving frame 51, swing arm 52, driver 53, telescopic cylinder 54, drive wheel 55, reset component 56, roller 57, driven wheel 58;

[0028] Feeding conveyor mechanism 60, conveyor line 61, feeding cylinder 62, sliding seat 63, push arm 64, limit block 65, guide rail 66;

[0029] Discharge mechanism 70. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0031] Reference Figures 1 to 4 The casting grinding equipment shown includes a frame 10, a side grinding mechanism 20, and a top grinding mechanism 30. A grinding table 11 is rotatably mounted on the frame 10. A fixed grinding mechanism 40 is provided on one side of the frame 10 located on the grinding table 11. The side grinding mechanism 20 and the top grinding mechanism 30 are both vertically mounted on the frame 10. A telescopic top pressure drive mechanism 50 is provided on one side of the frame 10. The top pressure drive mechanism 50 is used to drive the casting on the grinding table 11 to rotate together with the grinding table 11. The projections of the fixed grinding mechanism 40, the side grinding mechanism 20, and the top pressure drive mechanism 50 on the plane where the grinding table 11 is located form a triangle, and the rotation center of the casting is located inside the triangle. During grinding, the fixed grinding mechanism 40, the side grinding mechanism 20, and the top pressure drive mechanism 50 all abut against the outer wall of the casting. The working end of the side grinding mechanism 20 can be close to or away from the center of the grinding table 11.

[0032] Specifically, the frame 10 also has a worktable, and a grinding table 11 is rotatably mounted on the worktable. The worktable and the grinding table 11 are coplanar, which facilitates the movement of the casting on both for position adjustment later. During grinding, the casting is pushed by the top pressure drive mechanism 50, and in conjunction with the side grinding mechanism 20 and the fixed grinding mechanism 40, three-point positioning is achieved, at which point the rotation centers of the casting and the grinding table 11 coincide.

[0033] This casting grinding equipment features a rotatable grinding table 11, facilitating the adjustment of the surface position to be ground during the grinding process. It adapts to the grinding needs of the side grinding mechanism 20 and the top grinding mechanism 30. A triangularly distributed fixed grinding mechanism 40, in conjunction with the top-pressure drive mechanism 50 and the side grinding mechanism 20, enables automatic positioning and rotational balance of the entire casting. This structural design allows the casting to continuously adjust its grinding area as it rotates around the center of the grinding table 11, achieving continuous grinding. The working end of the side grinding mechanism 20 can be positioned closer to or further away from the center of the grinding table 11, adapting to the grinding needs of different surface depths and improving adaptability. The top-pressure drive mechanism 50 rotates the casting along with the grinding table 11. This structural design facilitates control of the casting's rotation speed and adapts to the positional distribution of the side grinding mechanism 20 and the fixed grinding mechanism 40.

[0034] Reference Figures 1 to 3 As shown, the side grinding mechanism 20 includes a frame 21, a first lifting cylinder 22, a first lifting frame 23, and a side grinding head 24. The frame 21 is mounted on the machine frame 10 and has a sliding groove 25. The first lifting frame 23 can be slidably mounted on the sliding groove 25 and its lower end can be close to or away from the center of the grinding table 11. The mounting end of the first lifting cylinder 22 is mounted on the frame 21, and the telescopic end of the first lifting cylinder 22 is connected to the first lifting frame 23. The side grinding head 24 is mounted on the lower end of the first lifting frame 23.

[0035] In the above embodiments, the first lifting cylinder 22 can control the grinding height of the side grinding head 24. The side grinding head 24 is a structure consisting of a motor and a grinding disc, which is conventional technology and will not be described in detail here. The slide 25 is vertically arranged and is used to limit the movement direction of the first lifting frame 23 during the lifting process. The lower end of the first lifting frame 23 can be close to or far from the center of the grinding table 11 to adapt to the uneven surface of the casting, so that the side grinding head 24 always keeps in contact with the surface of the casting to ensure the grinding effect. Therefore, the contact between the side grinding head 24 and the surface of the casting can be controlled by a structure such as a spring, or the position of the side grinding head 24 can be adjusted by a telescopic structure, such as a telescopic electric cylinder or a structure of motor and lead screw slider.

[0036] Reference Figure 1 and Figure 3As shown, the upper end of the first lifting frame 23 is provided with a sliding shaft 26, and two sliding grooves 25 are provided. The two ends of the sliding shaft 26 are slidably installed in the two sliding grooves 25 respectively. A flat-push cylinder 27 is hinged to the frame 21. The telescopic end of the flat-push cylinder 27 is hinged to the middle of the first lifting frame 23. The flat-push cylinder 27 can drive the side grinding head 24 to move closer to or away from the casting through the first lifting frame 23. It should be noted that a buffer structure, such as a spring structure, is provided between the side grinding head 24 and the first lifting frame 23 to avoid hard contact between the side grinding head 24 and the casting, thus protecting the side grinding head 24.

[0037] Reference Figure 1 and Figure 4 As shown, the top grinding mechanism 30 includes a bracket 31, a second lifting cylinder 32, a second lifting frame 33, and a top grinding head 34. The bracket 31 is installed on the area above the grinding table 11 of the frame 10. The second lifting cylinder 32 is installed on the bracket 31. The second lifting frame 33 is vertically slidably installed on the bracket 31. The second lifting cylinder 32 can drive the second lifting frame 33 to rise and fall. The top grinding head 34 is installed on the second lifting frame 33.

[0038] In the above embodiments, the top grinding head 34 is perfectly adapted to the top size of the casting, meaning that the top grinding head 34 can meet the top grinding requirements of the casting without adjusting its grinding position. Furthermore, the structure of the second lifting frame 33 is similar to that of the first lifting frame 23. The upper end of the second lifting frame 33 swings relative to the sliding member via a structure similar to a sliding shaft 26. The sliding member is mounted on the bracket 31, and the swing angle of the second lifting frame 33 is adjusted by adjusting the motor 35, thereby adjusting the working area of ​​the top grinding head 34. The adjusting motor 35 and the second lifting frame 33 are hinged, and the adjusting motor 35 is hingedly mounted on the bracket 31 or the frame 10.

[0039] Reference Figure 1 and Figure 2 As shown, the fixed grinding mechanism 40 includes a grinding motor 41 and a grinding wheel 42 mounted on the rotating end of the grinding motor 41. The grinding motor 41 is mounted on the frame 10, and the outer circumference of the grinding wheel 42 can abut against the outer wall of the casting. The rotation center of the grinding wheel 42 is parallel to the rotation center of the grinding table 11. Furthermore, the grinding motor 41 can be mounted on the frame 10 via an adjustment bracket to adapt to different castings.

[0040] Reference Figure 1 and Figure 2As shown, the top pressure drive mechanism 50 mainly functions to adjust the position of the casting on the grinding table 11 and to drive the casting to rotate to adapt to the adjustment of the grinding area. To avoid motion interference between the casting and the top pressure drive mechanism 50 when the casting enters and exits the grinding table 11, the top pressure drive mechanism 50 includes a movable frame 51, a swing arm 52 that can be oscillatingly mounted on the movable frame 51, and a driver 53 mounted on the outward end of the swing arm 52. The movable frame 51 is adjustablely mounted on the frame 10, and a telescopic cylinder 54 is provided on the frame 10. The telescopic cylinder 54 can drive the movable frame 51 to move closer to or away from the rotation center of the grinding table 11. A drive wheel 55 is provided on the output end of the driver 53. The drive wheel 55 can drive the casting to rotate with the grinding table 11. A reset member 56 is provided between the swing arm 52 and the movable frame 51. The design of the swing arm 52 is mainly to adapt to different positions of the casting so that it can make frontal contact with the surface of the casting, which facilitates the drive wheel 55 to drive the casting to rotate. During normal grinding, as soon as the un-grinded casting enters the grinding table 11, the telescopic cylinder 54 pushes the moving frame 51, and then the swing arm 52 presses down on the casting, causing the surface of the casting to contact the grinding wheel 42 and the side grinding head 24 respectively. At this time, the drive wheel 55, the grinding wheel 42, and the side grinding head 24 adjust the position of the casting through a three-point positioning method. Generally, the rotation center of the casting is located within the triangular area formed by the spatial points of the drive wheel 55, the grinding wheel 42, and the side grinding head 24 in contact with the surface of the casting. In this embodiment, the reset member 56 is a reset spring, and the driver 53 is a drive motor.

[0041] In the above embodiments, in order to facilitate the movement of the movable frame 51 relative to the frame 10, the movable frame 51 and the frame 10 can be connected by a sliding method. However, since a large amount of debris is generated during the grinding process of the casting, these debris can easily cause the sliding to be obstructed. Therefore, in an improved embodiment, a number of rollers 57 are provided on the bottom of the movable frame 51. The rollers 57 are mounted on the frame 10. Even if a certain amount of metal debris is deposited on the frame 10, the design of the rollers 57 can still allow the movable frame 51 to move on the frame 10.

[0042] In the above-described improved embodiment, some castings have a circular cross-section. In order to enable the castings to rotate, the moving frame 51 is provided with driven wheels 58 on both sides of the swing arm 52. During grinding, at least one of the two driven wheels 58 can abut against the outer wall of the casting.

[0043] Reference Figure 5 and Figure 6As shown, to facilitate the loading and unloading of castings, this application also includes a feeding conveyor mechanism 60 and a discharging mechanism 70. The feeding conveyor mechanism 60 and the discharging mechanism 70 are respectively arranged on opposite sides of the frame 10. The fixed grinding mechanism 40 and the top pressure drive mechanism 50 are respectively arranged on both sides of the line connecting the feeding conveyor mechanism 60 and the discharging mechanism 70. The side grinding mechanism 20 is arranged in the area of ​​the frame 10 located at the inlet end of the discharging mechanism 70. This application uses a gradual automatic sliding method to achieve material discharge. The discharging mechanism 70 is an inclined sliding plate structure or a sliding frame structure with multiple rollers.

[0044] In the aforementioned feeding and conveying mechanism 60, to better feed the casting onto the grinding table 11, the feeding and conveying mechanism 60 includes a conveyor line 61, a feeding cylinder 62 mounted on the frame 10, and a sliding seat 63 slidably mounted on the frame 10. The conveyor line 61 is mounted on the corresponding side of the frame 10 and can convey the casting to the grinding table 11. The feeding cylinder 62 is located above the conveyor line 61 and its extension and retraction direction is parallel to the conveying direction of the conveyor line 61. The extension and retraction end of the feeding cylinder 62 is hinged to the sliding seat 63. A push arm 64 is hinged to the sliding seat 63. The push arm 64 can swing relative to the sliding seat 63 along the contraction direction of the feeding cylinder 62. A limit block 65 is provided on the sliding seat 63. The limit block 65 can restrict the push arm 64 from swinging from the vertical position to the horizontal position of the feeding end of the conveyor line 61. Guide rails 66 are provided on both sides of the discharge end of the conveyor line 61. The corresponding end of the guide rail 66 extends towards the grinding table 11. The feeding cylinder 62 can push the unprocessed casting on the conveyor line 61 and send it into the grinding table 11 through the push arm 64.

[0045] It should be noted that the push arm 64 can only swing between the vertical position and the horizontal position at the feeding end of the conveyor line 61. This is mainly to allow the push arm 64 to avoid the casting. When the casting is driven forward by the conveyor line 61 or the feeding cylinder 62 extends, the outer wall of the casting can push the push arm 64 to swing, so that the casting can continue to be conveyed forward. After the casting passes directly under the push arm 64, the push arm 64 naturally droops due to its own weight. At this time, the feeding cylinder 62 retracts and drives the push arm 64 to move the casting closer to the grinding table 11. Then the push arm 64 will push the outer wall of the casting forward, so that the casting can be transferred from the conveyor line 61 to the grinding table 11.

[0046] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A casting grinding device, characterized in that, The device includes a frame, a side grinding mechanism, and a top grinding mechanism. A grinding table is rotatably mounted on the frame. A fixed grinding mechanism is located on one side of the frame near the grinding table. Both the side grinding mechanism and the top grinding mechanism are vertically and vertically mounted on the frame. A retractable top-pressure drive mechanism is located on one side of the frame. The top-pressure drive mechanism is used to drive the casting on the grinding table to rotate together with the grinding table. The projections of the fixed grinding mechanism, the side grinding mechanism, and the top-pressure drive mechanism on the plane of the grinding table form a triangle, and the rotation center of the casting is located inside the triangle. During grinding, the fixed grinding mechanism, the side grinding mechanism, and the top-pressure drive mechanism all abut against the outer wall of the casting. The working end of the side grinding mechanism can be close to or far from the center of the grinding table.

2. The casting grinding equipment according to claim 1, characterized in that, The top pressure drive mechanism includes a movable frame, a swing arm swayably mounted on the movable frame, and a driver mounted on the outward end of the swing arm. The movable frame is adjustablely mounted on the frame, and a telescopic cylinder is provided on the frame. The telescopic cylinder can drive the movable frame to move closer to or away from the rotation center of the grinding table. A drive wheel is provided at the output end of the driver, and the drive wheel can drive the casting and the grinding table to rotate together. A reset member is provided between the swing arm and the movable frame.

3. The casting grinding equipment according to claim 2, characterized in that, The bottom of the mobile frame is provided with several rollers, which are rolled on the frame.

4. The casting grinding equipment according to claim 2, characterized in that, The movable frame is equipped with driven wheels on both sides of the swing arm; during grinding, at least one of the two driven wheels can abut against the outer wall of the casting.

5. The casting grinding equipment according to claim 1, characterized in that, The fixed grinding mechanism includes a grinding motor and a grinding wheel mounted on the rotating end of the grinding motor. The grinding motor is mounted on the frame, and the outer circumference of the grinding wheel can abut against the outer wall of the casting. The rotation center of the grinding wheel is parallel to the rotation center of the grinding table.

6. The casting grinding equipment according to claim 1, characterized in that, The side grinding mechanism includes a frame, a first lifting cylinder, a first lifting frame, and a side grinding head. The frame is mounted on a machine frame and has a sliding groove. The first lifting frame is slidably mounted on the sliding groove and its lower end can be close to or away from the center of the grinding table. The first lifting cylinder is mounted on the frame and its telescopic end is connected to the first lifting frame. The side grinding head is mounted on the lower end of the first lifting frame.

7. The casting grinding equipment according to claim 6, characterized in that, The upper end of the first lifting frame is provided with a sliding shaft, and two sliding grooves are provided. The two ends of the sliding shaft are respectively slidably installed in the two sliding grooves. A flat-push cylinder is hinged on the frame body. The telescopic end of the flat-push cylinder is hinged to the middle of the first lifting frame. The flat-push cylinder can drive the side grinding head to move closer to or away from the casting through the first lifting frame.

8. The casting grinding equipment according to claim 1, characterized in that, The top grinding mechanism includes a bracket, a second lifting cylinder, a second lifting frame, and a top grinding head. The bracket is installed on the machine frame in the area above the grinding table. The second lifting cylinder is installed on the bracket. The second lifting frame is vertically slidably installed on the bracket. The second lifting cylinder can drive the second lifting frame to rise and fall. The top grinding head is installed on the second lifting frame.

9. The casting grinding equipment according to claim 1, characterized in that, It also includes a feeding conveying mechanism and a discharging mechanism, which are respectively arranged on opposite sides of the frame. The fixed grinding mechanism and the top pressure driving mechanism are respectively arranged on both sides of the line connecting the feeding conveying mechanism and the discharging mechanism. The side grinding mechanism is arranged on the frame in the area where the discharging mechanism is located.

10. A casting grinding device according to claim 9, characterized in that, The feeding and conveying mechanism includes a conveyor line, a feeding cylinder mounted on a frame, and a sliding seat slidably mounted on the frame. The conveyor line is installed on a corresponding side of the frame and can convey castings to the grinding table. The feeding cylinder is located above the conveyor line and its extension and retraction direction is parallel to the conveying direction of the conveyor line. The extension and retraction end of the feeding cylinder is hinged to the sliding seat. A push arm is hinged on the sliding seat and can swing relative to the sliding seat along the retraction direction of the feeding cylinder. A limit block is provided on the sliding seat, which can restrict the push arm from swinging from a vertical position to a horizontal position at the feeding end of the conveyor line. Guide rails are provided on both sides of the discharge end of the conveyor line, and the corresponding end of the guide rails extends towards the grinding table. The feeding cylinder can push the unprocessed castings on the conveyor line and feed them into the grinding table through the push arm.

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