A dressing device

Abstract

The application relates to a grinding device and belongs to the field of trimming devices. The grinding device comprises a workbench and a movable guiding seat locked on the workbench, the guiding seat is provided with an avoiding structure for avoiding a grinding knife, the distance between the guiding seat and the perforation of the grinding knife can be adjusted, the distance between the guiding surface of the guiding seat and the grinding knife can be adjusted after the grinding knife is installed at the perforation, the relative distance between the edge on a grinding piece abutting against the guiding seat and the edge to be ground by the grinding knife changes, the edges at other positions on the grinding piece can be conveniently ground, the distance between the guiding seat and the grinding knife on the workbench cannot be adjusted due to the fact that the guiding seat is fixedly arranged on the workbench in the prior art, the grinding position of the grinding piece cannot be adjusted, and the fixed grinding amount leads to the problem that the precision cannot be adjusted.

Description

Technical Field

[0001] This invention relates to a grinding device, belonging to the field of trimming devices. Background Technology

[0002] Transformers are crucial components in power equipment. Oil-immersed transformers, in particular, provide excellent insulation. During their production, insulating components are used to separate adjacent parts that need to maintain insulation. These components are typically made of specially formulated cardboard. During production, especially the cutting process, burrs and sharp edges inevitably appear on the insulating cardboard. Given the high-voltage environment inside the transformer, these burrs and sharp edges can cause point discharge. Therefore, the edges of the insulating components need to be repaired during production to remove excess burrs and sharp edges.

[0003] For trimming the edges of components, existing technologies include trimming tools for trimming boards and other materials. For example, Chinese utility model patent CN221021425U, published on May 28, 2024, discloses a trimming device for interior decorative panels. This device includes a workbench and a baffle plate on the workbench surface. The baffle plate includes straight sections and clearance grooves between the two straight sections. A trimming knife (i.e., a grinding knife) is also provided on the workbench surface at the clearance groove. The workbench has a trimming knife through-hole (i.e., a grinding knife through-hole) for the trimming knife to pass through, and part of the trimming knife's blade protrudes from the baffle plate. In addition, a limiting structure is provided on the workbench that can slide along the workbench surface to clamp the part to be trimmed. The part to be trimmed is clamped between the baffle plate and the limiting structure, and the edge to be trimmed is in contact with the surface of the baffle plate. When the part to be trimmed is moved, the trimming knife can grind the edge of the part to be trimmed, completing the trimming.

[0004] However, in the above technical solutions, the positions of the baffle and the trimming knife are relatively fixed. During trimming, only the outermost edge can be ground. In insulating parts, there are cases where there is a central hole requiring grinding of the inner hole's edge. Existing grinding tools cannot handle such parts. Furthermore, in the above technical solutions, the distance between the grinding knife and the guide surface of the baffle (i.e., the guide seat) is constant. This means that the amount of grinding is fixed each time the part to be ground moves on the guide seat, and the grinding accuracy is directly proportional to the amount of grinding, making it impossible to control or adjust the grinding accuracy. In the electrical field, for the processing of insulating parts in high-voltage environments, to ensure high insulation performance, the edge grinding effect must be guaranteed. This requires the grinding amount to be adjustable according to processing requirements, a goal that the above solutions cannot achieve. Summary of the Invention

[0005] The purpose of this invention is to provide a grinding device to solve the problems in the prior art where the guide seat is fixedly set on the worktable, resulting in the inability to adjust the distance between the guide seat and the grinding tool on the worktable, which in turn makes it impossible to grind areas other than the edge of the workpiece to be ground, and the inability to adjust the precision due to the limitation of processing with a fixed grinding amount.

[0006] To achieve the above objectives, the grinding device of the present invention adopts the following technical solution: A grinding device includes a worktable, a guide seat and a grinding tool through hole on the worktable surface, the guide seat having a clearance structure for avoiding the grinding tool, and a guide surface for conforming to the edge of the workpiece to be ground to guide the workpiece. The guide seat is movably locked on the worktable and the direction of movement of the guide seat is the same as the normal extension direction of the guide surface, so that the grinding tool partially located in the clearance structure protrudes beyond the guide surface by a predetermined size to grind the outer edge of the workpiece or to maintain a predetermined distance between the grinding tool and the clearance structure and the guide surface to grind the inner edge of the workpiece.

[0007] Furthermore, the guide seat includes a guide seat body and two slide plates movably locked on the guide seat body. An avoidance structure is provided on the guide seat body. The side of the slide plate facing the workpiece to be repaired constitutes the guide surface. The two slide plates can be relatively close to each other or far apart in the guiding direction of the guide surface.

[0008] Furthermore, the guide seat body is provided with a horizontally extending first guide groove, and the guide seat also includes a first adjusting screw for connecting the guide seat body and the slide plate. The first adjusting screw passes through the first guide groove and is threadedly connected to the slide plate, and the screw of the first adjusting screw does not protrude from the guide surface of the slide plate. Alternatively, the first adjusting screw passes through the slide plate and the first guide groove in sequence and is connected to a nut, and the screw hole on the slide plate is a countersunk hole.

[0009] Furthermore, a baffle plate is provided on the side of the guide seat facing away from the guide surface. The space enclosed by the baffle plate constitutes the avoidance structure. A tool groove for the grinding tool to pass through is also provided on the baffle plate.

[0010] Furthermore, the worktable is also equipped with a push structure for moving the workpiece to be repaired along the guide surface.

[0011] Furthermore, the worktable is provided with a slide groove extending along the guide direction of the guide surface, and the pushing structure includes a slide seat that cooperates with the guide of the slide groove and a pushing base disposed above the slide seat for contacting the workpiece to be repaired.

[0012] Furthermore, the push base and the slide are rotatably assembled together. The push base is provided with an arc-shaped guide groove, the center of which is located on the rotation axis of the push base relative to the slide. The slide and the push base are fixedly connected by a detachable fastener that passes through the arc-shaped guide groove.

[0013] Furthermore, the workbench is provided with a guide rail extending along the normal direction of the guide surface, and a lockable guide block is provided on the guide rail, with the guide seat fixed on the lockable guide block.

[0014] Furthermore, there are two guide rails located on both sides of the guide seat, and guide rail mounting plates are provided on both sides of the worktable. Each guide rail mounting plate is fixedly equipped with one guide rail.

[0015] Furthermore, the grinding device also includes a mounting plate that is detachably connected to the workbench and flush with the workbench. The grinding blade is perforated on the mounting plate, the surface of the mounting plate forms part of the workbench surface, and the bottom of the mounting plate is provided with a mounting structure for detachably mounting the trimming machine.

[0016] The beneficial effects of the grinding device in this invention are as follows: This invention belongs to the category of element modification. By changing the connection relationship between the guide seat and the worktable, the position of the guide seat relative to the worktable can be adjusted. Since the worktable is provided with a fixed grinding tool through hole for the grinding tool to pass through, and the moving direction of the guide seat is perpendicular to the guide surface, when the guide seat moves relative to the worktable, the corresponding positions of the guide seat and the grinding tool through hole also change, thereby adjusting the distance between the grinding tool and the guide seat, and thus adjusting the distance between the grinding tool and the guide surface on the guide seat. Because the guide seat has a clearance structure, the distance of the shaving cutter can be adjusted until the shaving cutter and the guide surface of the guide seat coincide, so as to facilitate the shaving of the outer edge of the workpiece. Alternatively, the shaving cutter and the guide surface can be kept at a preset interval to facilitate the shaving of the inner edge of the workpiece. Of course, during the movement, the size of the shaving cutter protruding from the guide surface can also be adjusted to adjust the shaving amount. This solves the problems in the prior art where the guide seat is fixed on the worktable, which makes it impossible to adjust the distance between the guide seat and the shaving cutter on the worktable. This results in the inability to shave areas other than the edge of the workpiece and the inability to adjust the precision due to the fact that only a fixed shaving amount can be used for processing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an embodiment of the grinding device in this invention; Figure 2 This is a schematic diagram of the guide seat of an embodiment of the grinding device in this invention; Figure 3This is a schematic diagram of the guide seat from another perspective of an embodiment of the grinding device in this invention; Figure 4 This is a schematic diagram of the guide rail structure of an embodiment of the grinding device in this invention; Figure 5 This is a schematic diagram of the pushing structure of an embodiment of the grinding device in this invention; Figure 6 This is a schematic diagram of the mounting plate of an embodiment of the grinding device in this invention.

[0018] In the diagram: 1. Workbench; 11. Mounting plate; 111. Grinding tool through hole; 12. Slide groove; 21. Guide rail; 22. Lockable guide block; 31. Guide plate; 311. First guide groove; 32. Clearance structure; 321. Side plate; 322. Base plate; 33. Tool groove; 34. Slide plate; 35. First adjusting screw; 36. Connecting plate; 41. Slide; 42. Push base; 421. Base plate; 422. First push plate; 43. Second push plate; 44. Second fastener; 45. Arc-shaped guide groove; 46. Second adjusting screw; 47. Second guide groove. Detailed Implementation

[0019] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0020] In this invention, the grinding device is equipped with a guide seat that can guide the workpiece to be ground. The guide seat is movably locked on the worktable, thereby adjusting the distance between the guide seat and the grinding tool hole. After the grinding tool is installed at the grinding tool hole, the distance between the guide surface of the guide seat and the grinding tool can also be adjusted. As a result, the relative distance between the edge of the workpiece to be ground that rests on the guide seat and the edge to be ground by the grinding tool will change, making it easier to grind the edges of other positions on the workpiece.

[0021] In an embodiment of the grinding device of the present invention: like Figure 1 and Figure 6As shown, the grinding device in this embodiment includes a workbench 1 with a flat surface for placing the workpiece to be ground. A grinding blade for trimming the edges of the workpiece needs to be installed on the workbench 1. Therefore, a mounting plate 11 is also provided on the workbench 1. The mounting plate 11 is detachably connected to the workbench 1 and has a grinding blade through-hole 111 for the grinding blade to pass through. The upward-facing surface of the mounting plate 11 also forms part of the workbench 1. The mounting plate 11 has bolt holes for mounting an edge trimmer. In use, the edge trimmer is placed upside down on the workbench 1, with the grinding blade facing upwards and passing through the grinding blade through-hole 111 on the mounting plate 11. At this time, the main body of the edge trimmer is located below the mounting plate 11. To accommodate different grinding blades or edge trimmers, the mounting plate 11 is detachably mounted to the workbench 1 using threaded fasteners, making it easy to adapt to more models of edge trimmers. Of course, in other embodiments, the mounting plate can be fixedly mounted on the worktable. In this case, the mounting plate cannot be replaced, and more bolt holes can be provided on the mounting plate to accommodate more trimming machines. Alternatively, in other embodiments, instead of a trimming machine, a separate grinding tool assembly can be provided.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, after the shaving tool is installed on the mounting plate 11, a guide seat is also provided on the worktable 1 for better shaving operations. The guide seat has a guide surface for the workpiece to be shaving. In order to achieve shaving at different positions of the workpiece, the guide seat is movably fixed on the worktable 1 and the moving direction of the guide seat is perpendicular to the guide surface. This allows the distance between the guide seat, the shaving tool through hole 111, and the shaving tool to be shaving to be adjusted. At this time, the edge of the workpiece to be shaving is guided on the guide seat, and the edge of the workpiece to be shaving can be shaving in conjunction with the shaving tool. At the same time, the dimensional relationship between the guide surface of the guide seat and the shaving tool can be changed to change the feed rate.

[0023] To balance the adjustment function of the guide seat relative to the worktable 1 and its guiding function for the workpiece to be refurbished, the guide seat needs to be fixed relative to the worktable 1 to facilitate the guidance of the workpiece; it also needs to be movable relative to the worktable 1 to adjust the distance between the guide seat and the refurbishing tool through hole 111. Specifically, the worktable 1 has two opposing, parallel, and perpendicular edges arranged to the guide surface. Guide rail mounting plates are fixedly mounted on these edges. The upper surface of the guide rail mounting plates is flush with the table surface of the worktable 1 and protrudes downwards from the worktable 1 to avoid interference between the upper end and the guide seat. Each guide rail mounting plate is fixedly mounted with a guide rail 21, such as... Figure 4As shown, a lockable guide block 22 is also mounted on the guide rail 21. The lockable guide block 22 has a moving state relative to the guide rail 21 and a fixed state relative to the guide rail 21. The guide seat includes a guide seat body and a connecting plate 36 fixedly mounted on the guide seat body and extending downward. There are two connecting plates 36, located at opposite ends of the guide seat. The connecting plates 36 are fixedly mounted on the lockable guide block 22. When the lockable guide block 22 is in a moving state relative to the guide rail 21, the guide seat is in a moving state accordingly. When the lockable guide block 22 is fixed relative to the guide rail 21, the guide seat is also in a fixed state. By switching between these two states, it is convenient to adjust the position of the edge to be ground on the workpiece. It is worth noting that the guide rail 21 and the lockable guide block 22 in this embodiment are existing technologies, and mature products on the market can be directly purchased, such as a built-in dual-axis linear guide rail. The guide seat can be infinitely adjusted through the cooperation of the rail and the lockable slider, with a larger adjustment range and higher precision.

[0024] Of course, in other embodiments, two parallel grooves can be provided on the worktable, and the guide rails can be arranged in the grooves. In this case, the guide rails are no longer arranged on opposite sides of the worktable. Alternatively, in other embodiments, the number of guide rails can be adjusted, with three or one guide rails. Alternatively, in other embodiments, a sliding groove can be provided, and the lockable guide block engages with the sliding groove via a set screw, thus facilitating the switching between the two modes of the guide seat. Alternatively, in other embodiments, the connecting plate can be omitted, and the lockable guide block and the guide seat can be directly fixed together with bolts. Alternatively, in other embodiments, the rail can be omitted, and multiple fastening holes can be arranged at intervals on the rail mounting plate, and the connecting plate can be fastened with bolts after moving to different positions.

[0025] In this embodiment, the guide seat can grind both the outermost and inner edges of the workpiece. Therefore, the guide seat includes two guide plates 31 arranged perpendicular to its moving direction. A clearance structure 32 for avoiding the grinding tool is provided between the two guide plates 31. The spaced surfaces of the two guide plates 31 facilitate grinding the edges of the workpiece, allowing the edges to rest against the guide seat. The grinding tool protrudes slightly from the guide surface of the guide seat. As the workpiece moves along the guide seat, its edges contact the grinding tool, thus completing the grinding of the workpiece's edges. The clearance structure 32 includes two side plates 321 perpendicular to the guide plate 31 and a bottom plate 322 parallel to the guide plate 31. The two side plates 321 and the bottom plate 322 surround the shaving tool, forming both a clearance groove for the shaving tool to avoid collision and a protective structure for the operator to surround the cutting edge of the shaving tool. Since the guide seat can move along the worktable 1, a tool passage groove 33 is also provided on the bottom plate 322 of the clearance groove to allow the shaving tool to pass through in order to avoid collision between the guide seat and the shaving tool during movement. The height and width of the tool passage groove 33 are greater than the size of the shaving tool, thus facilitating the passage of the shaving tool. Of course, in other embodiments, the clearance groove may be omitted, and only the tool passage groove may be provided; or, in other embodiments, only the clearance groove may be provided, and the tool passage groove may be omitted, maintaining a distance between the guide seat and the shaving tool during the movement of the guide seat.

[0026] When grinding the middle part of a workpiece, it needs to cross a clearance groove as it is guided along the guide seat. If the workpiece is small, one end may fall into the clearance groove and rotate. Therefore, a sliding plate 34 is also provided on the guide seat, corresponding to a guide plate 31. The guide plate 31 has a first guide groove 311 extending horizontally. A first adjusting screw 35 is threaded onto the sliding plate 34, with its screw threaded through the first guide groove 311. When the first adjusting screw 35 is tightened, its head abuts against the guide plate 31, fixing the sliding plate 34 relative to the guide plate 31. Adjusting the first adjusting screw 35 allows the position of the sliding plate 34 relative to the guide plate 31 to change, ultimately allowing the two sliding plates 34 to fit together, facilitating the sliding of the workpiece on the guide seat. Of course, in other embodiments, the first guide groove may not be provided on the guide plate; instead, multiple screw mounting holes arranged at intervals may be provided. The screw mounting holes facilitate the adjustment of the slide plate's position. Alternatively, in other embodiments, the slide plate may not be provided at all. In this case, the clearance groove cannot be covered, and only larger-sized grinding parts can be processed. Alternatively, in other embodiments, countersunk holes may be provided on the slide plate to accommodate the screw head of the first adjusting screw. A nut that is threaded onto the first adjusting screw is provided on the side of the guide plate opposite to the slide plate, and the slide plate is installed on the guide plate by the nut.

[0027] like Figure 1 and Figure 5 As shown, when the size of the workpiece to be ground is small, if the workpiece is moved by hand, the worker's hand may be cut by the blade, resulting in injury. Therefore, a pushing structure is also provided on the worktable 1 to guide the workpiece to be ground along the guiding direction of the guide seat. Specifically, the worktable 1 is provided with a slide groove 12, and the pushing structure is provided with a slide block 41 that matches the slide groove 12. The slide block 41 is guided and disposed within the slide groove 12, thereby realizing the guiding movement of the pushing structure relative to the worktable 1. Of course, in other embodiments, to realize the movement of the pushing structure relative to the worktable, a guide bar of a certain length can also be provided on the worktable, and a groove can be provided on the pushing structure.

[0028] The pushing structure also includes a pushing base 42 disposed above the slide 41. The pushing base 42 includes a base plate 421 and a first push plate 422 arranged perpendicularly to each other. The base plate 421 contacts the slide 41 and is arranged horizontally, while the first push plate 422 is arranged vertically. The base plate 421 and the slide 41 are connected together by bolts, so that the base plate 421 can rotate about the rotation axis of the slide 41. A second fastener 44 is also provided on the slide 41. The second fastener is a bolt and a nut adapted to the bolt. The bolt in the second fastener 44 passes through the slide 41, and the screw head of the second fastener 44 is located on the side of the base plate 421 away from the guide rod. When the second fastener 44 is tightened, the second fastener 44 can press the base plate 421 and the slide 41 together. An arc-shaped guide groove 45 is provided on the substrate 421. The arc-shaped guide groove 45 is arranged around the hinge axis between the substrate 421 and the slide 41. The second fastener 44 cooperates with the arc-shaped guide groove 45 to fix the substrate 421 in the corresponding position, thereby allowing the push base 42 to rotate relative to the slide 41. Of course, in other embodiments, the arc-shaped guide groove may not be provided. Instead, multiple bolt mounting holes are provided at even intervals around the hinge axis between the push base and the slide. In use, the second fastener is tightened into different positions to adjust the two.

[0029] A second push plate 43 is also provided on the first push plate 422, which can guide and cooperate with the first push plate 422. The second push plate 43 is used to directly contact the workpiece to be repaired. A horizontally extending second guide groove 47 is provided on the first push plate 422, and a second adjusting screw 46 is provided on the second push plate 43. The second adjusting screw 46 is installed on the second push plate 43 and passes through the second guide groove 47. When the second adjusting screw 46 is tightened, the second adjusting screw 46 presses the second push plate 43 and the first push plate 422 together to achieve a fixed connection. When the second adjusting screw 46 is loosened, the second push plate 43 and the first push plate 422 can move relative to each other along the second guide groove 47. This structure facilitates the adjustment of the position of the second push plate 43, making it easy to set the second push plate 43 toward the guide seat. After the guide seat moves, the second push plate 43 can always be attached to the periphery of the guide seat, which is convenient for grinding small-sized workpieces.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A grinding device, characterized in that: The device includes a worktable, on which a guide seat and a grinding tool through-hole are provided. The guide seat has a clearance structure to avoid the grinding tool and a guide surface to conform to the edge of the workpiece to be ground. The guide seat is movably locked on the worktable, and the direction of movement of the guide seat is the same as the normal extension direction of the guide surface. This allows the grinding tool, partially located within the clearance structure, to protrude beyond a predetermined size from the guide surface, thereby grinding the outer edge of the workpiece or maintaining a predetermined distance between the grinding tool and the clearance structure and the guide surface, thereby grinding the inner edge of the workpiece. A baffle plate is provided on the side of the guide seat facing away from the guide surface, and the space enclosed by the baffle plate constitutes the clearance structure. A guide rail extending along the normal direction of the guide surface is provided on the worktable, and a lockable guide block is guided on the guide rail. The guide seat is fixed to the lockable guide block.

2. The grinding device according to claim 1, characterized in that: The guide seat includes a guide seat body and two slide plates that are movably locked onto the guide seat body. An avoidance structure is provided on the guide seat body. The side of the slide plate facing the workpiece to be refurbished forms the guide surface. The two slide plates can be relatively close to each other or far apart in the guiding direction of the guide surface.

3. The grinding device according to claim 2, characterized in that: The guide seat body is provided with a horizontally extending first guide groove. The guide seat also includes a first adjusting screw for connecting the guide seat body and the slide plate. The first adjusting screw passes through the first guide groove and is threadedly connected to the slide plate, and the screw of the first adjusting screw does not protrude from the guide surface of the slide plate. Alternatively, the first adjusting screw passes through the slide plate and the first guide groove in sequence and is connected to the nut, and the screw hole on the slide plate is a countersunk hole.

4. The grinding apparatus according to any one of claims 1-3, characterized in that: The enclosure also has a tool groove for the sharpening tool to pass through.

5. The grinding apparatus according to any one of claims 1-3, characterized in that: The workbench is also equipped with a push structure for moving the workpiece to be repaired along the guide surface.

6. The grinding device according to claim 5, characterized in that: The worktable is provided with a slide groove extending along the guide direction of the guide surface, and the pushing structure includes a slide seat that cooperates with the guide of the slide groove and a pushing base disposed above the slide seat for contacting the workpiece to be repaired.

7. The grinding device according to claim 6, characterized in that: The push base and the slide are rotatably assembled together. The push base is provided with an arc-shaped guide groove. The center of the arc-shaped guide groove is located on the rotation axis of the push base relative to the slide. The slide and the push base are fixedly connected by a detachable fastener that passes through the arc-shaped guide groove.

8. The grinding device according to claim 1, characterized in that: The guide seat includes a guide seat body and a connecting plate that is fixedly mounted on the guide seat body and extends downward. The connecting plate is fixedly mounted on a lockable guide block.

9. The grinding apparatus according to any one of claims 1-3, characterized in that: There are two guide rails located on both sides of the guide seat. Guide rail mounting plates are provided on both sides of the worktable, and one guide rail is fixedly mounted on each guide rail mounting plate.

10. The grinding apparatus according to any one of claims 1-3, characterized in that: The grinding device also includes a mounting plate that is detachably connected to the workbench and flush with the workbench. The grinding blade is perforated on the mounting plate. The surface of the mounting plate forms part of the workbench surface. The bottom of the mounting plate is provided with a mounting structure for detachably mounting the trimming machine.

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