A top hammer grinding angle switching mechanism

Abstract

This utility model relates to a top hammer grinding angle switching mechanism, comprising: a bottom horizontal worktable, a flip plate, a combined sliding support mechanism, and a transmission mechanism; the flip plate rotates around one edge of the horizontal worktable as a central axis, thereby forming a flipping space between the flip plate and the horizontal worktable; the combined sliding support mechanism is located above the horizontal worktable and within the flipping space, and is connected to the other side of the bottom horizontal worktable through the transmission mechanism; the bottom of the combined sliding support mechanism abuts against the upper surface of the horizontal worktable, and adopts a combined structure of wedge-shaped parts and contour blocks, which is assembled between the worktable and the flip plate through the transmission mechanism to form a sliding support for the flip plate; and the movement of the transmission mechanism of this combined structure lifts the flip plate, realizing the dual-angle adjustment of the flip plate relative to the worktable to adapt to the large and small inclined surface grinding of the top hammer.

Description

Technical Field

[0001] This utility model relates to an angle transformation structure in the top hammer grinding process, specifically a top hammer grinding angle switching mechanism, belonging to the field of top hammer product machining. Background Technology

[0002] The top hammer product has 9 grinding working surfaces, including 4 large inclined surfaces, 4 small inclined surfaces and a top plane. The machining method usually uses surface grinding to process the large and small inclined surfaces of the top hammer. However, when machining the top hammer, the working surfaces need to be changed frequently during the surface grinding process in order to complete the machining of the entire product.

[0003] Because the top hammer needs to be processed eight times on the bevel, the angle needs to be switched when processing four large bevels and four small bevels to coordinate with the grinding mechanism. When processing four large bevels, the top hammer needs to be adjusted once, and when processing four small bevels, it needs to be adjusted again. However, the top hammer is heavy, so the angle needs to be changed with the help of a corresponding adjustment mechanism.

[0004] Currently, the method for switching the angle between machining large and small inclined planes is to set up a flip plate that forms an angle with the worktable and use electric or hydraulic flipping drive devices to drive the flip plate to tilt. For example, a hydraulic cylinder or electric push rod is connected between the flip plate and the worktable, so as to change the angle between the flip plate and the worktable to achieve the required angle of the top hammer. Although this method of changing the angle is convenient, the structure is complicated, the processing cost is high, and the processing steps are increased.

[0005] Meanwhile, the eight bevel grinding operations of the top hammer require eight flips to change the working surface. However, the top hammer has a smooth surface and is heavy, making it unsuitable for manual rotation, thus posing a difficulty in changing the working surface. Furthermore, the current method of completing the grinding task using the forming fixture involves first fixing the top hammer in a square fixture (i.e., a square with a tapered circle in the middle and a regular square on the outside) and aligning it with a dial indicator. The outer right-angled edge of the square fixture is kept parallel to the side end face of the top hammer blank. Then, the square fixture is placed on a bevel fixture (a fixture with one vertical side and one inclined side, and two working surfaces) and a clamp is fixed. Both fixtures are then placed on the worktable of a surface grinder for grinding. When changing the working surface, the worker needs to manually disassemble and reassemble the clamp repeatedly during the grinding process. In addition, there is a difficulty in alignment during the grinding task. Fixture wear affects accuracy. During the process of changing the working surface of the workpiece, the square fixture rubs against the round fixture, and fixture wear will affect the angular tolerance of the product. Utility Model Content

[0006] In view of the above-mentioned technical defects, the purpose of this utility model is to provide a top hammer grinding angle switching mechanism. This mechanism cleverly realizes the dual angle switching of the flat grinding table in a purely mechanical way, so as to adapt to the grinding of large and small inclined surfaces by the top hammer on the table, thereby improving the grinding efficiency of the top hammer.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: a top hammer grinding angle switching mechanism, comprising: a bottom horizontal worktable, a flip plate, a combined sliding support mechanism, and a transmission mechanism; the horizontal worktable and the flip plate are hinged and flipped together, and the flip plate flips around one edge of the horizontal worktable as a central rotation axis to form a flipping space with the horizontal worktable; the combined sliding support mechanism is provided above the horizontal worktable and within the flipping space, and the combined sliding support mechanism is connected to the other side of the bottom horizontal worktable through the transmission mechanism; the bottom of the combined sliding support mechanism abuts against the upper surface of the horizontal worktable, and the top of the combined sliding support mechanism is supported on the lower surface of the flip plate;

[0008] Furthermore, the combined sliding support mechanism includes: a wedge-shaped member and a contour block, wherein a mating reference surface is provided between the wedge-shaped member and the contour block, the wedge-shaped member is located above the contour block, and the contour block is located between the wedge-shaped member and the horizontal worktable, and the wedge-shaped member and the contour block are in contact through the mating reference surface; a transmission mechanism connecting part extends from the end of the wedge-shaped member away from the flip plate, and the wedge-shaped member is connected to the transmission mechanism connecting part and simultaneously connected to the horizontal worktable;

[0009] Furthermore, the contour block is a stepped platform structure with a sloping upper surface, and the stepped platform consists of a first horizontal surface, a middle sloping surface, and a second horizontal surface from top to bottom; the bottom surface of the contour block is a horizontal surface, and the bottom surface of the contour block directly contacts the upper surface of the horizontal workbench.

[0010] Furthermore, one end of the wedge-shaped member near the flipping plate is configured as a conical structure, while the other end is the end where the transmission mechanism connection is located. The conical angle of the wedge-shaped member forms two inclined surfaces, with the upper and lower inclined surfaces intersecting at the same end. The other ends of the upper and lower inclined surfaces respectively transition to form the upper and lower horizontal surfaces of the wedge-shaped member. The upper inclined surface of the wedge-shaped member is used to directly contact the flipping plate, and the lower horizontal surface and lower inclined surface of the wedge-shaped member, together with the middle inclined surface and the second horizontal surface of the contour block, form a mating reference surface.

[0011] Furthermore, the transmission mechanism connection part of the wedge-shaped member consists of two horizontal extension platforms, and the two horizontal extension platforms are provided with vertically penetrating connection holes.

[0012] Furthermore, the transmission mechanism includes: a push-pull handle, two sets of locking assemblies, and a hinge element connecting the push-pull handle; the push-pull handle includes a handle head and a handle rod, the bottom end of the handle rod is connected to the side of the horizontal workbench via a rotating pin, and the handle rod is connected to the side of the contour block via a hinge element, wherein the hinge element is a two-section hinge structure movably connected together.

[0013] Furthermore, two sets of locking assemblies are located on the outer side walls of the horizontal worktable on both sides of the push-pull lever. Each locking assembly includes a T-shaped screw and a nut. The outer side wall of the horizontal worktable has an integrally extended groove-type screw connector. The screw connector is provided with a corresponding connecting hole that mates with the T-shaped screw. The horizontal ends of the T-shaped screw pass through the connecting holes of the screw connector and are fixedly connected to the screw connector, so that the T-shaped screw is vertically set perpendicular to the horizontal worktable. The outer diameter of the top end of the T-shaped screw is provided with an external thread that matches the internal thread of the nut. In use, the T-shaped screw passes through the connecting hole of the wedge-shaped horizontal extension platform and is fastened above the horizontal extension platform by the nut, thereby realizing the connection between the entire combined sliding support mechanism and the horizontal worktable.

[0014] Based on the aforementioned switching mechanism, a servo-controlled indexing head is fixed on the flipping plate. A top hammer is mounted on the indexing head via a circular fixture. The top hammer rotates at an angle controlled by the servo system of the indexing head. During operation, the flipping plate is first lifted by adjusting the combined sliding support mechanism so that the top hammer is lifted to the first working angle, and then polished by the grinding mechanism. After completing the processing and grinding of one large inclined surface of the top hammer, the top hammer is rotated 90° by rotating the indexing head to achieve the processing and grinding of another large inclined surface. The above operation is repeated to complete the processing and grinding of four large inclined surfaces. The combined sliding support mechanism is adjusted again to change the tilt angle of the top hammer to the second working angle. Then, the above operation is repeated to complete the processing and grinding of four small inclined surfaces of the top hammer.

[0015] Based on the above scheme, the first working angle of this mechanism is to adjust the first horizontal plane of the contour block in the combined sliding support mechanism to be in complete contact with the lower horizontal plane of the wedge, that is, to make the wedge above the first horizontal plane of the contour block. The operation method of this process is to loosen the nut in the locking assembly, pull the push-pull handle outward, and make the contour block move outward with the push-pull handle, thereby forcing the wedge to be rigidly lifted by the contour block, so that the wedge and the contour block slide relative to each other, and finally reach the state where the lower horizontal plane of the wedge is completely on the first horizontal plane of the contour block. Then the nut is tightened to make the device stable. The first horizontal plane of the contour block is the first working surface of the top hammer grinding, grinding the large inclined surface of the top hammer.

[0016] The second working angle of this mechanism is to adjust the middle inclined surface and the second horizontal surface of the contour block in the combined sliding support mechanism to form a reference fit with the lower horizontal surface and part of the lower inclined surface of the wedge, that is, to make the wedge be positioned on the second horizontal surface and the middle inclined surface of the contour block. The operation method of this process is to push the push-pull lever inward, so that the contour block moves inward under the push-pull lever. During the movement of the contour block, the wedge slides relative to the contour block, so that the wedge slides down onto the second horizontal surface and the middle inclined surface of the contour block. After the reference fit is completed, the nut is locked to ensure the stability of the device, thereby changing the angle between the flipping plate and the horizontal worktable. The state of the wedge being on the second horizontal surface and the middle inclined surface of the contour block is the second working angle of the top hammer grinding, grinding the small inclined surface of the top hammer.

[0017] The beneficial effects of the top hammer grinding angle switching mechanism of this utility model are:

[0018] The system employs a combination structure of wedge-shaped parts and contour blocks, which are assembled between the worktable and the tilting plate via a transmission mechanism to form a sliding support for the tilting plate. The movement of the transmission mechanism of this combination structure lifts the tilting plate, enabling dual-angle adjustment of the tilting plate relative to the worktable to accommodate the grinding of the large and small inclined surfaces of the top hammer. This solution uses an indexing plate to rotate the positioning sleeve that mounts the top hammer, thereby completing the machining of the four inclined surfaces of the top hammer. There is no need for operators to flip and move the positioning sleeve, simplifying operation and reducing manual labor intensity. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the present invention (the second working angle of the top hammer grinding, the state of grinding the small inclined surface).

[0020] Figure 2 for Figure 1 The diagram of the shape block structure in the image.

[0021] Figure 3 for Figure 1 The structural diagram of the wedge-shaped component.

[0022] Figure 4 This is a structural diagram of the first working angle (grinding large inclined plane state) of the top hammer grinding of this utility model.

[0023] Figure 5 A schematic diagram showing the state of the nut being loosened during the second working angle of the top hammer grinding process of this mechanism.

[0024] Figure 6 A schematic diagram illustrating the relative sliding state of the wedge and the profile block during the second working angle of the top hammer grinding process of the mechanism.

[0025] Figure 7This is a schematic diagram showing the state where the wedge has completely slid onto the profile block during the second working angle of the top hammer grinding process of the mechanism.

[0026] Figure 8 for Figure 1 Side view.

[0027] In the diagram, 1. Horizontal worktable, 2. Flip plate, 3. Wedge-shaped part, 4. Contouring block, 4.1. First horizontal plane, 4.2. Middle inclined plane, 4.3. Second horizontal plane, 3.1. Upper inclined plane, 3.2. Lower inclined plane, 3.3. Upper horizontal plane, 3.4. Lower horizontal plane, 3.5. Extension table, 3.6. Connecting hole, 5. Wrench head, 6. Wrench lever, 7. Rotating pin, 8. T-screw, 9. Nut, 10. Screw connecting seat, 11. Indexing head, 12. Circular jig, 13. Top hammer, 13.1. Top hammer large inclined plane, 13.2. Top hammer small inclined plane, 14. Rear baffle. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0029] See Figures 1-4 The top hammer grinding angle switching mechanism shown includes: a bottom horizontal worktable 1, a flip plate 2, a combined sliding support mechanism, and a transmission mechanism; the horizontal worktable 1 and the flip plate 2 are hinged and flipped together, and the flip plate 2 flips around one side edge of the horizontal worktable 1 as a central rotation axis to form a flipping space with the horizontal worktable 1; the combined sliding support mechanism is arranged above the horizontal worktable 1 and within the flipping space, and the combined sliding support mechanism is connected to the other side of the bottom horizontal worktable 1 through the transmission mechanism; the bottom of the combined sliding support mechanism abuts against the upper surface of the horizontal worktable 1, and the top of the combined sliding support mechanism is supported on the lower surface of the flip plate 2;

[0030] Using the above structure, the combined sliding support mechanism is driven by the transmission mechanism to slide back and forth in the flipping space, so that the flipping plate 2 attached to the combined sliding support mechanism swings accordingly, thereby changing the size of the angle between the flipping plate 2 and the horizontal worktable 1, and realizing the dual-angle adjustment of the top hammer 13.

[0031] Furthermore, the combined sliding support mechanism includes: a wedge-shaped member 3 and a contour block 4. A mating reference surface is provided between the wedge-shaped member 3 and the contour block 4. The wedge-shaped member 3 is located above the contour block 4, and the contour block 4 is located between the wedge-shaped member 3 and the horizontal worktable 1. The wedge-shaped member 3 and the contour block 4 are in contact through the mating reference surface. A transmission mechanism connecting part extends from one end of the wedge-shaped member 3 away from the flip plate 2. The wedge-shaped member 3 is connected to the transmission mechanism connecting part and simultaneously connected to the horizontal worktable 1.

[0032] Furthermore, the contour block 4 is a stepped platform structure with a sloping upper surface, and the stepped platform consists of a first horizontal surface 4.1, a middle sloping surface 4.2, and a second horizontal surface 4.3 from top to bottom; the bottom surface of the contour block 4 is a horizontal surface.

[0033] Furthermore, one end of the wedge-shaped member 3 near the flip plate 2 is configured as a conical structure, and the other end is the end where the transmission mechanism connection part is set; the conical angle of the wedge-shaped member 3 forms two inclined surfaces, the upper inclined surface 3.1 and the lower inclined surface 3.2 intersect at the same end, and the other ends of the upper inclined surface 3.1 and the lower inclined surface 3.2 respectively transition to form the upper horizontal surface 3.3 and the lower horizontal surface 3.4 of the wedge-shaped member; the upper inclined surface 3.1 of the wedge-shaped member 3 is used to directly abut against the flip plate 2, and the lower horizontal surface 3.4 and the lower inclined surface 3.2 of the wedge-shaped member 3 form a mating reference surface with the middle inclined surface 4.2 and the second horizontal surface 4.3 of the contour block 4;

[0034] Furthermore, the transmission mechanism connection part of the wedge-shaped member 3 consists of two horizontal extension platforms 3.5, and the two horizontal extension platforms 3.5 are provided with vertically penetrating connection holes 3.6 for the transmission mechanism to pass through.

[0035] Furthermore, the transmission mechanism includes: a push-pull handle, two sets of locking assemblies, and a hinge element connecting the push-pull handle; the push-pull handle includes a handle head 5 and a handle rod 6, the bottom end of the handle rod 6 is connected to the side of the horizontal worktable 1 via a rotating pin 7, and the handle rod 6 is connected to the side of the contour block 4 via a hinge element. The hinge element is a two-section hinge structure movably connected together, which facilitates the push-pull handle to flexibly drive the contour block 4 to move without jamming; by pushing the push-pull handle, the contour block 4 moves inward relative to the horizontal worktable 1, generating relative displacement; by pulling out the push-pull handle, the contour block 4 moves outward relative to the horizontal worktable 1, generating relative displacement.

[0036] Furthermore, two sets of locking assemblies are located on the outer side walls of the horizontal worktable 1 on both sides of the push-pull lever. Each set of locking assemblies includes: a T-shaped screw 8 and a nut 9. A grooved screw connecting seat 10 extends integrally from the outer side wall of the horizontal worktable 1. The screw connecting seat 10 is provided with a corresponding connecting hole that mates with the T-shaped screw 8. The horizontal ends of the T-shaped screw 8 pass through the connecting holes of the screw connecting seat 10 and are fixedly connected to the screw connecting seat 10, so that the T-shaped screw 8 is vertically set perpendicular to the horizontal worktable 1. The outer diameter of the top end of the T-shaped screw 8 is provided with an external thread that matches the internal thread of the nut 9. In use, the T-shaped screw 8 passes through the connecting hole 3.6 of the horizontal extension platform of the wedge-shaped piece 3 and is fastened above the horizontal extension platform 3.5 by the nut 9, thereby realizing the connection between the entire combined sliding support mechanism and the horizontal worktable 1.

[0037] Based on the above technical solution, the contour block 4 and the wedge 3 are matched in a contouring manner and the system is self-locked by the locking assembly. When the wedge 3 is in different positions on the contour block 4, the device is kept stable.

[0038] Based on the aforementioned switching mechanism, a servo-controlled indexing head 11 is fixed on the flip plate 2. A top hammer 13 is mounted on the indexing head 11 via a circular fixture 12. The top hammer 13 rotates at an angle controlled by the servo system of the indexing head 11. During operation, the flip plate 2 is first lifted by adjusting the combined sliding support mechanism, so that the top hammer 13 is lifted to the first working angle, and then grinding is performed by the grinding mechanism. After grinding one large inclined surface 13.1 of the top hammer 13, the top hammer 13 is rotated 90° by rotating the indexing head 11 to achieve the grinding of another large inclined surface 13.1. The above operation is repeated to complete the grinding of four large inclined surfaces 13.1. The combined sliding support mechanism is then adjusted again to change the tilt angle of the top hammer 13. The angle is adjusted to the second working angle, and then the above operation is repeated to complete the processing and grinding of the four small inclined surfaces of the top hammer. The grinding mechanism is any existing grinding mechanism that can perform surface grinding on the top hammer. The circular jig 12 and the hammer 13 are installed in a conventional manner. The servo system and the indexing head 11 are existing design products used in the angle switching mechanism of this scheme. The principle is to set the rotation angle through the upper computer touch screen and control the indexing head through the PLC program. After setting through the touch screen, the button automatically rotates 90°. This part of the design is not within the design scope of this angle switching mechanism. It should be noted that the control accuracy requirements of the servo system and the indexing head 11 are high. Specifically, the servo drive system and the absolute encoder control the motor rotation angle with 8,388,608 pulses per revolution of the motor. The coaxiality of the indexing head is 0.01 mm, the outer cylindricity is 0.02 mm, and the end face flatness is 0.01 mm. This solution significantly improves work efficiency, shortens auxiliary work time, and increases production efficiency by more than 50%. It reduces the workload of workers, avoids personal injury during operation, and can be flipped with just a touch of a button. It also offers higher work precision, eliminating friction and wear, and utilizes digital control for even greater accuracy. Furthermore, it expands the range of product specifications; while manual processing can only handle sizes up to 199mm, this device can process sizes up to 240mm.

[0039] Based on the above scheme, the first working angle of this mechanism is to adjust the first horizontal surface 4.1 of the contour block 4 in the combined sliding support mechanism to be in complete contact with the lower horizontal surface 3.4 of the wedge 3, that is, to make the wedge 3 above the first horizontal surface 4.1 of the contour block 4. The operation method of this process is to loosen the nut 9 in the locking assembly, pull the push-pull handle outward, and make the contour block 4 move outward with the push-pull handle, thereby forcing the wedge 3 to be rigidly lifted by the contour block 4, so that the wedge 3 and the contour block 4 slide relative to each other, and finally reach the state where the lower horizontal surface 3.4 of the wedge 3 is completely on the first horizontal surface 4.1 of the contour block 4. Then, the nut 9 is locked to form a stable device. The first horizontal surface 4.1 of the contour block 4 is the first working surface of the top hammer grinding, grinding the top hammer large inclined surface 13.1. At this time, the top hammer large inclined surface 13.1 is parallel to the horizontal worktable.

[0040] The second working angle of this mechanism is to adjust the middle inclined surface 4.2 and the second horizontal surface 4.3 of the contour block 4 in the combined sliding support mechanism to form a reference fit with the lower horizontal surface 3.4 and a portion of the lower inclined surface 3.2 of the wedge 3, that is, to make the wedge 3 sit on the second horizontal surface 4.3 and the middle inclined surface 4.2 of the contour block 4; the operation method for this process is to first loosen the nut 9 in the locking assembly, such as Figure 5 As shown in the diagram; pushing the push-pull lever inward causes the contour block 4 to move inward under the push of the lever. During the movement of the contour block 4, the wedge-shaped part 3 and the contour block 4 slide relative to each other. The sliding process is as follows: Figure 6 As shown in the diagram; until the wedge 3 has completely slid onto the second horizontal surface 4.3 and the middle inclined surface 4.2 of the contour block 4, as... Figure 7 As shown, after completing the reference fit, tighten nut 9, as follows. Figure 1 In state 8, the contour block collides with the rear baffle at its rear. After the nut 9 is tightened, the device remains stable, thus changing the angle between the flipping plate 2 and the horizontal worktable 1. The wedge 3 is positioned at the second horizontal plane 4.3 and the middle inclined plane 4.2 of the contour block 4, which is the second working angle for the top hammer grinding, grinding the small inclined plane 13.2 of the top hammer. At this time, the small inclined plane 13.2 of the top hammer is parallel to the horizontal worktable. During the change of the above two working angles, the lower surface of the flipping table 2 always rests against the upper inclined plane 3.1 of the wedge 3. The difference in elevation between the first horizontal plane 4.1 and the second horizontal plane 4.3 of the contour block 4 is the angle change amount for machining the large inclined plane 13.1 and the small inclined plane 13.2 of the top hammer.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] Furthermore, 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 at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. A top hammer grinding angle switching mechanism, characterized in that, include: The bottom consists of a horizontal worktable, a flip plate, a combined sliding support mechanism, and a transmission mechanism. The horizontal worktable and the flip plate are hinged and flipped together. The flip plate rotates around one edge of the horizontal worktable as its central axis, thus forming a flipping space between the worktable and the horizontal worktable. The combined sliding support mechanism is located above the horizontal worktable and within the flipping space. The combined sliding support mechanism is connected to the other side of the bottom horizontal worktable via the transmission mechanism. The bottom of the combined sliding support mechanism abuts against the upper surface of the horizontal worktable, and the top of the combined sliding support mechanism is supported on the lower surface of the flip plate.

2. The top hammer grinding angle switching mechanism according to claim 1, characterized in that: The combined sliding support mechanism includes a wedge and a contour block. A mating reference surface is provided between the wedge and the contour block. The wedge is located above the contour block, and the contour block is located between the wedge and the horizontal worktable. The wedge and the contour block are in contact through the mating reference surface. A transmission mechanism connecting part extends from the end of the wedge away from the flip plate. The wedge is connected to the transmission mechanism connecting part and simultaneously connected to the horizontal worktable.

3. The top hammer grinding angle switching mechanism according to claim 2, characterized in that: The contour block is a stepped platform structure with a sloping upper surface. The stepped platform consists of a first horizontal surface, a middle sloping surface, and a second horizontal surface from top to bottom. The bottom surface of the contour block is a horizontal surface and directly contacts the upper surface of the horizontal workbench.

4. The top hammer grinding angle switching mechanism according to claim 2, characterized in that: The wedge-shaped member has a tapered structure at one end near the flipping plate, and the other end is where the transmission mechanism connection is located. The tapered angle of the wedge-shaped member forms two inclined surfaces, with the upper and lower inclined surfaces intersecting at the same end. The other ends of the upper and lower inclined surfaces respectively form the upper and lower horizontal surfaces of the wedge-shaped member. The upper inclined surface of the wedge-shaped member is used to directly contact the flipping plate, and the lower horizontal surface and lower inclined surface of the wedge-shaped member, together with the middle inclined surface and the second horizontal surface of the contour block, form a mating reference surface.

5. The top hammer grinding angle switching mechanism according to claim 2, characterized in that: The transmission mechanism connection of the wedge-shaped member consists of two horizontal extension platforms, each with a through-hole.

6. The top hammer grinding angle switching mechanism according to claim 5, characterized in that: The transmission mechanism includes: a push-pull handle, two sets of locking assemblies, and a hinge element connecting the push-pull handle; the push-pull handle includes a handle head and a handle rod, the bottom end of the handle rod is connected to the side of the horizontal workbench via a rotating pin, and the handle rod is connected to the side of the contour block via a hinge element, the hinge element being two sections of hinge structure movably connected together.

7. The top hammer grinding angle switching mechanism according to claim 6, characterized in that: Two locking assemblies are located on the outer side walls of the horizontal worktable on both sides of the push-pull lever. Each locking assembly includes a T-shaped screw and a nut. The outer side wall of the horizontal worktable has an integrally extended groove-type screw connector. The screw connector has a corresponding connecting hole that mates with the T-shaped screw. The horizontal ends of the T-shaped screw pass through the connecting holes of the screw connector and are fixedly connected to the screw connector, so that the T-shaped screw is vertically set perpendicular to the horizontal worktable. The outer diameter of the top end of the T-shaped screw has an external thread that matches the internal thread of the nut. In use, the T-shaped screw passes through the connecting hole of the wedge-shaped horizontal extension platform and is tightened above the horizontal extension platform by the nut.

8. The top hammer grinding angle switching mechanism according to claim 1, characterized in that: The indexing head of the servo system is fixed on the flip plate, and a top hammer is mounted on the indexing head through a circular fixture.

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