Special grooving limiter for angle grinder
By using the height and depth plate structure of the angle grinder-specific grooving limiter, the problem of controlling the depth and width of the groove when the cutting machine is cutting grooves on the kitchen countertop is solved, achieving flat and stable installation of the cutting groove, and improving the efficiency and convenience of decoration.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2026-03-17
AI Technical Summary
In home renovation, when using a cutting machine to cut grooves in kitchen countertops, it is difficult to control the depth and width of the cut, resulting in uneven height of the embedded groove, which affects the stability of the sink installation and the ease of cleaning.
A grooving limiter for angle grinders was designed, comprising a height plate and a depth plate. The cutting thickness is adjusted by the height plate and the cutting depth is adjusted by the depth plate. Combined with the alignment indicator of the positioning plate, the cutting disc can be accurately positioned.
It significantly improves the efficiency and precision of grooving, ensures the smoothness of the cut groove, and enhances the stability and ease of cleaning when installing the water tank.
Smart Images

Figure CN223998079U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of manual tools used in the decoration process, and in particular to a grooving limiter for an angle grinder. Background Technology
[0002] In home renovation, installers need to install the sink (washbasin) on the kitchen countertop. Countertops are typically made of stone, and the sink is installed on top of the countertop. There are several ways to connect the sink to the countertop: undermount sinks (installed below the countertop), recessed sinks, and top-mount sinks. Undermount sinks are easy to clean, but because they are not permanently fixed to the countertop, they are prone to falling off later. Top-mount sinks are more stable, but the basin surface protrudes above the countertop, making cleaning inconvenient. Recessed sinks combine the advantages of both undermount and top-mount sinks, being both easy to clean and sturdy, and are gradually becoming the mainstream in the market. However, to install the sink into the countertop, an installation groove needs to be cut in the countertop so that the edge of the sink can be embedded in the countertop. This groove needs to be cut on-site according to the size of the sink. This step is quite difficult. Traditionally, installers would use a cutting machine to cut a groove a few millimeters deep along the edge of the sink hole to embed the sink. However, this method is difficult to control; the height of the embedded groove is uneven, and the depth and width are difficult to control. In order to make the cutting machine easier to control during the cutting of the embedded groove, and to make the cutting of the embedded groove simpler and faster, this utility model discloses a grooving limiter for angle grinders. Utility Model Content
[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a grooving limiter for angle grinders. The main feature of this new limiter is that it ensures that the cutting machine can easily grind out a flat and smooth embedded groove by limiting the height plate and the depth plate.
[0004] Based on the above, the present invention proposes a grooving limiter for angle grinders, comprising a height plate and a positioning plate. The height plate is connected above the angle grinder cutting disc, and has a height adjustment hole. This hole is connected to the cover ring via a No. 3 lock nut, allowing for height adjustment. The cutting thickness of the cutting disc is controlled by adjusting the distance between the height plate and the cover ring. The positioning plate is connected to the height plate and has a alignment mark. The edge position of the cutting disc is determined by the alignment mark, thereby controlling the cutting depth.
[0005] Furthermore, the cover ring is provided with a No. 3 lock nut hole, through which a height-fixing plate can be connected; a pin hole is provided for connecting a depth-fixing plate; and a No. 2 lock nut hole is provided for connecting a fixing lock bar through a No. 2 lock nut.
[0006] Furthermore, the depth-fixing plate is a plate structure with a flat bottom, one end of which is connected to a locking strip. The rotation position of the depth-fixing plate can be adjusted by the locking strip, and the distance of the cutting blade extension can be limited by the change in rotation position, thereby adjusting the cutting depth.
[0007] This utility model has at least the following beneficial effects:
[0008] Compared with existing technologies, the grooving limiter for angle grinders described in this utility model features a height plate and a depth plate structure. When used with an angle grinder, the height plate and depth plate effectively limit and define the distance, overcoming the uneven cutting issues that occur when directly using an angle grinder. This significantly improves grooving efficiency and precision, and enhances user productivity while reducing process complexity. Attached Figure Description
[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.
[0010] Figure 1 The diagram shown is a schematic representation of the overall structure of this utility model.
[0011] Figure 2 The diagram shown is an exploded view of the overall structure of this utility model;
[0012] Figure 3 The diagram shown is a schematic diagram of the overall structure of the cover ring in this utility model;
[0013] Figure 4 This is a schematic diagram of the overall structure of the present invention from another perspective;
[0014] Figure 5 The diagram shown is a schematic of the overall structure of the angle grinder;
[0015] Figure 6 The diagram shown is a schematic diagram of the overall integration of this utility model and an angle grinder;
[0016] Figure 7 The diagram shown is a schematic representation of the overall structure of the positioning plate of this utility model.
[0017] Figure 8 The diagram shown is a schematic representation of the overall structure of the height-fixing plate in this utility model.
[0018] Figure 9The diagram shown is a schematic of the overall structure of the limiter of this utility model when it is used in conjunction with an angle grinder.
[0019] Figure 10 The diagram shown is of an angle grinder equipped with the limiter of this utility model during the cutting of a side groove.
[0020] Figure 11 What is shown is Figure 10 A magnified view of part A in the image;
[0021] Figure 12 The image shown is a cross-sectional view of an angle grinder equipped with the limiter of this invention during the cutting of a side groove.
[0022] Figure 13 What is shown is Figure 12 A magnified view of part B in the image.
[0023] Explanation of icon numbers:
[0024] 1. Cover ring, 2. Height plate, 3. Depth plate, 4. Locking bar, 5. Marking plate, 6. Pin, 7. Tightening screw, 8. No. 1 lock nut, 9. No. 2 lock nut, 10. No. 3 lock nut, 11. Pin hole, 12. Positioning rib, 13. No. 3 lock nut hole, 14. No. 2 lock nut hole, 15. Limiting bead, 16. Alignment mark, 17. Marking plate adjustment hole, 18. Limiting bead mounting hole, 19. Sliding bolt, 20. No. 1 lock nut hole, 21. Height plate adjustment hole, 22. Sliding groove, 23. Cutting disc, 24. Side groove, 25. Side groove, 26. Fixing ring, 27. Table surface.
[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean 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.
[0029] This utility model discloses a grooving limiter specifically for angle grinders. The limiter includes a height plate and a positioning plate. The key design feature is that the height plate, a crucial structure for limiting the cutting depth, is used, and the positioning plate indicates the cutting edge position of the cutting blade. The following will describe... Figures 1 to 13 Let me give an example to explain what a slotting limiter for angle grinders is. This explanation is only applicable to this technical field and does not have a broad scope to other technical fields.
[0030] This utility model is mainly used for grooving stone when installing a basin in a kitchen countertop, but it can also be used for grooving other materials in similar scenarios. It needs to be used in conjunction with an angle grinder. The so-called limiting is mainly to limit the cutting depth and thickness of the cutting blade, so that the cut is flat and smooth, ensuring the efficiency and accuracy of grooving.
[0031] Figures 1 to 13 In the main structure, the cover ring 1 is equipped with a fixing ring 26, which can be clamped onto the angle grinder head to fix the present invention and the angle grinder. The fixing ring 26 is locked by a tightening screw 7. The inner side of the fixing ring 26 is provided with a positioning rib 12, which can match the slot hole on the angle grinder head to make the connection more secure and the connection position more accurate. The cover ring 1 can provide safety protection and suppress cutting dust. The cover ring is provided with a pin hole 11, a second lock nut hole 14, and a third lock nut hole 13. The pin hole 11 can pass through a pin 6 for connecting to the depth plate 3. The second lock nut hole 14 can be connected to the lock bar 4 through the second lock nut 9. The third lock nut hole 13 can be connected to the height plate 2 through the third lock nut 10.
[0032] The height-fixing plate 2 is provided with a height-fixing plate adjustment hole 21, a first lock nut hole 20, and a sliding groove 22. The height-fixing plate adjustment hole 21 is an elongated hole whose position can be moved up and down relative to the cover ring 1. By moving the position, the distance between the height-fixing plate and the cutting blade 23 can be adjusted to achieve the function of fixing the height and limit the cutting height of the cutting blade. Figure 10The diagram shows an angle grinder equipped with the limiter of this invention during side groove cutting. At this time, the height plate 2 is in close contact with the table surface 27, restricting the up and down movement of the cutting blade, so that the cutting blade 23 can only cut at a fixed height, thereby achieving the limiting function and ensuring that the cut side groove 25 is smooth.
[0033] The cut side groove 25 needs to have both a certain height and a certain depth. However, during the cutting process, the cutting blade 23 is hidden in the cutting material, making it difficult to visually determine the cutting depth from the outside. To determine the cutting depth during the cutting process, a first lock nut hole 20 and a sliding groove 22 are provided on the height-fixing plate 2. These two structures are mainly used to connect the positioning plate 5. The positioning plate 5 is provided with a long strip-shaped positioning plate adjustment hole 17 for adjusting the position of the positioning plate relative to the height-fixing plate. The positioning plate 5 is provided with a sliding bolt 19. The sliding bolt 19 can be matched with the sliding groove 22. During the adjustment process, the sliding bolt 19 can slide in the sliding groove 22 to ensure that the relative position of the positioning plate 5 with respect to the height-fixing plate 2 in the vertical direction is fixed.
[0034] During the cutting process, it is often necessary to cut the side groove 24 before cutting the side groove 25. At this time, the cutting depth of the side groove cannot exceed the side groove 24. A alignment mark 16 is set at the front end of the positioning plate 5. Before cutting, the alignment mark 16 can be adjusted to be flush with the edge of the cutting disc in the vertical direction. In this way, during the cutting process, the edge position of the cutting disc can be determined by the alignment mark 16, and thus the cutting depth can be determined. As long as the alignment mark 16 moves along the cutting line or the side groove 24, the cutting depth of the cutting disc 23 can be guaranteed not to exceed the side groove 24.
[0035] The positioning plate 5 is provided with a limit bead mounting hole 18, into which the limit bead 15 can be installed. The limit bead 15 is a retractable bead with a spring at the top. When the edge of the cutting blade cuts to the position of the side groove 24, the limit bead pops out and sinks into the side groove, thereby ensuring to a certain extent that the cutting can be carried out along the position of the side groove.
[0036] It should be noted that the limiting bead 15 is not essential to this utility model. The limiting bead can be replaced by a bolt or rod structure; any structure that can be recessed into the edge groove can achieve the same technical effect as the limiting bead in this embodiment. In this embodiment, the cutting depth of the cutting blade within the material can be determined by the alignment mark 16. This alignment mark is an essential structure of this utility model. In this embodiment, the alignment mark 16 is a hole structure. In other embodiments, whether it is a hole structure, a rod structure, or the edge line of the marking plate 5, this marking function can be achieved; they all have the same technical effect, and all these structures fall within the scope of protection claimed in the claims of this utility model.
[0037] The pin hole 11 on the cover ring 1 is connected to the depth fixing plate 3 via the pin 6. The other end of the depth fixing plate 3 is connected to the locking strip 4. The depth fixing plate 3 can rotate around the pin 6. After rotating to a suitable angle, the locking strip 4 is fixed by tightening the second lock nut, thereby fixing the depth fixing plate 3. At this time, the maximum distance from the edge of the cutting blade beyond the depth fixing plate to the center of the cutting blade is the required cutting depth. By fixing the depth of the depth fixing plate 3, the cutting depth of the edge groove 24 can be fixed, thereby achieving the function of limiting and preventing the cut edge groove from being of uneven depth, thus achieving the purpose of a smooth cutting depth.
[0038] In actual use, after connecting the limiter and the angle grinder, first adjust the position of the depth plate and determine the cutting depth to cut the side groove. Then determine the distance between the height plate and the cutting blade to cut the side groove. This completes most of the work of cutting the installation groove for the Taichung basin. Through the limiting effect of the depth plate and the height plate, a flat and smooth groove structure can be cut, thereby improving work efficiency.
[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A special slot limiter for angle grinder, comprising a fixed height plate and a mark plate, characterized in that, The fixed height plate is connected above the cutting disc of the angle grinder, and a fixed height plate distance adjusting hole is arranged on the fixed height plate. The fixed height plate distance adjusting hole is connected to the cover ring through a No. 3 lock nut, and the height can be adjusted. The cutting thickness of the cutting disc is controlled by adjusting the distance between the fixed height plate and the cover ring. The index plate is connected to the fixed height plate, and a line alignment index is arranged on the index plate. The edge position of the cutting disc is determined through the indication of the line alignment index, so that the cutting depth is controlled.
2. An open slot checkstop for an angle grinder as claimed in claim 1, characterized in that: The cover ring is provided with a No. 3 lock nut hole, which can be connected to the fixed height plate through a No. 3 lock nut. A pin hole is arranged for connecting the fixed depth plate. A No. 2 lock nut hole is arranged, and a fixed lock bar is connected through a No. 2 lock nut.
3. An open slot checkstop for an angle grinder as claimed in claim 2, characterized in that: The fixed depth plate is a flat plate structure with a flat bottom. One end of the fixed depth plate is connected to a lock bar, which can adjust the rotating position of the fixed depth plate. The cutting depth is adjusted by limiting the extension distance of the cutting disc through the change of the rotating position.