Anti-lock dead angle abrasive disc pressing plate structure

Abstract

The utility model discloses an anti-lock dead angle abrasive disc pressing plate structure, which relates to the technical field of cutting machines and comprises a mounting seat mounted on an output main shaft of a cutting machine, a groove formed in the upper end surface of the mounting seat, a turntable arranged in the groove in the upper end surface of the turntable, and an upper pressing plate sleeved on the output main shaft of the cutting machine and positioned at the upper end of the turntable, according to the design, the rotating disc is additionally arranged between the upper pressing plate and the mounting base, the mounting base and the upper pressing plate are designed to be in a rotating mode, and the problems that due to the fact that friction between a traditional mounting base and an upper pressing plate is large, an angle abrasive disc is prone to being locked, and dismounting is strenuous can be solved; and in addition, the balls on the turntable are designed to be cylindrical, so that the contact area of the upper pressing plate during rotation is increased, the stability of the upper pressing plate is enhanced, and meanwhile, the service life of the upper pressing plate can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of cutting machine technology, and in particular to an anti-locking dead angle grinding disc pressure plate structure. Background Technology

[0002] A handheld cutting machine mainly consists of a motor, reducer, cutting disc, handle, and protective cover. The cutting disc is the primary cutting component, typically made of hard materials such as diamond, and is used to cut various hard materials. The pressure plate structure (i.e., locking plate structure) secures the cutting disc or angle grinding disc to the cutting disc, ensuring it does not fall off or loosen during use, facilitating material cutting or angle grinding.

[0003] The existing fixing structure of cutting discs or angle grinding discs is basically: spindle, tray (i.e., pressure plate), cutting disc or angle grinding disc and locking nut (i.e. locking plate). The cutting disc or angle grinding disc is fixed by installing the tray on the output spindle of the cutting machine, then putting the cutting disc or angle grinding disc on the spindle, and using the locking nut to tighten it on the spindle.

[0004] However, existing fixed structures are prone to seizing during disassembly due to the high friction between the locking nut, the cutting disc or angle grinder disc, and the tray, making disassembly extremely inconvenient and requiring the use of tools. Therefore, this utility model provides an anti-seizing angle grinder disc pressure plate structure. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an anti-locking dead angle grinding disc pressure plate structure, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-locking dead angle grinding disc pressure plate structure, including a mounting base installed on the output spindle of a cutting machine, and further comprising:

[0007] A groove is formed on the upper surface of the mounting base to place and limit the turntable;

[0008] A turntable is disposed in a groove on the upper end face of the turntable, and the outer diameter of the turntable matches the inner diameter of the groove;

[0009] The upper pressure plate is sleeved on the output spindle of the cutting machine and located at the upper end of the turntable, and is in contact with it;

[0010] A protective sleeve is fitted over the outside of the mounting base, turntable, and upper pressure plate to provide dust protection for the mounting base, turntable, and upper pressure plate.

[0011] The mounting base, turntable, upper pressure plate, and protective sleeve are all mounted on the output spindle of the cutting machine and are located on the same center line.

[0012] As a further technical solution of this utility model, the mounting base, turntable and upper pressure plate are all provided with a circular hole at the center of their surfaces to facilitate fitting onto the main shaft of the cutting machine, and the surface of the turntable is provided with a plurality of ball bearing placement grooves in a circular array with the circular hole as the center, and the ball bearings are rotatably arranged in the ball bearing placement grooves.

[0013] As a further technical solution of this utility model, the ball is made of cylindrical metal, and the exposed parts of the ball on the upper and lower surfaces of the turntable are at the same height.

[0014] As a further technical solution of this utility model, the upper pressure plate is located at the upper end of the turntable and contacts multiple balls exposed on the upper surface of the turntable. The lower surface of the upper pressure plate and the inner bottom surface of the groove are both flat.

[0015] As a further technical solution of this utility model, the outer diameter of the mounting base and the upper pressure plate are the same, and the outer diameter of the mounting base and the upper pressure plate are the same as the inner diameter of the protective sleeve. The top end of the protective sleeve is provided with a pressing edge protruding towards the inner center point. When the protective sleeve is sleeved on the outside of the mounting base and the upper pressure plate, the protruding pressing edge presses on the edge of the upper surface of the upper pressure plate.

[0016] This utility model provides an anti-locking dead angle grinding disc pressure plate structure, which has the following advantages compared with the prior art:

[0017] Beneficial effects:

[0018] This design introduces an anti-lock angle grinding disc pressure plate structure. A turntable is added between the upper pressure plate and the mounting base, allowing the mounting base and upper pressure plate to rotate. This solves the problem of excessive friction between the traditional mounting base and upper pressure plate, which easily leads to the angle grinding disc seizing, making removal difficult and requiring tools. Furthermore, the cylindrical design of the ball bearings on the turntable increases the contact area during the rotation of the upper pressure plate, strengthening its stability and extending its service life. In addition, the protective sleeves covering the upper pressure plate and mounting base prevent cutting debris or impurities from entering the ball bearing grooves of the turntable, thus ensuring the smoothness of ball bearing rotation and maintaining the cleanliness of the turntable, indirectly improving its service life. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of an anti-locking dead angle grinding disc pressure plate structure;

[0020] Figure 2 This is a disassembly diagram of an anti-locking dead angle grinding disc pressure plate structure;

[0021] Figure 3 This is a partial cross-sectional view of a grinding disc pressure plate structure designed to prevent dead angle seizing.

[0022] Figure 4 for Figure 3 Disassembly diagram;

[0023] Figure 5 A schematic diagram of the anti-locking angle grinding disc pressure plate structure installed on the output spindle of the cutting machine and the angle grinding disc.

[0024] In the diagram: 1. Mounting base; 2. Groove; 3. Turntable; 31. Ball bearing; 4. Upper pressure plate; 5. Protective sleeve. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 This utility model provides a technical solution for an anti-locking dead angle grinding disc pressure plate structure: an anti-locking dead angle grinding disc pressure plate structure, including a structure installed on the output spindle of a cutting machine (i.e., attached...). Figure 5 The mounting base 1 in b) also includes a groove 2 formed on the upper end face of the mounting base 1 for placing and limiting the turntable 3. The outer diameter of the turntable 3 is matched with the inner diameter of the groove 2, which can better hold the turntable 3 in the groove 2 and limit it to prevent it from shifting during use. Moreover, the ball bearing 31 on the turntable 3 rotates at the bottom of the groove 2, which can improve the stability when disassembling the angle grinding disc.

[0027] The mounting base 1, turntable 3, and upper pressure plate 4 all have circular holes at their center for easy mounting on the cutting machine spindle. The turntable 3 has multiple ball bearing slots arranged in a circular array around these holes, with balls 31 rotatably mounted within each slot. The balls 31 are made of cylindrical metal, and their exposed portions on the upper and lower surfaces of the turntable 3 are at the same height. This cylindrical design increases the contact area with the upper pressure plate 4 and mounting base 1, enhancing the stability of the upper pressure plate 4 during rotation and facilitating the installation and removal of the angle grinding disc (i.e., the attached disc). Figure 5 When c), turn the locking disc (i.e. Figure 5 In a), the upper pressure plate 4 is rotated synchronously with the angle grinding disc and the locking disc by the rotation of the ball bearings 31 on the surface of the turntable 3, which reduces friction and makes it easier to remove the angle grinding disc. Moreover, the design of the cylindrical ball bearings 31 can better increase the contact area of ​​the upper pressure plate 4 when it rotates, thereby improving its stability and firmness when rotating, which is more conducive to the removal of the angle grinding disc.

[0028] The upper pressure plate 4 is mounted on the output spindle of the cutting machine and is located at the upper end of the turntable 3 and in contact with it. The upper pressure plate 4 is located at the upper end of the turntable 3 and is in contact with the multiple balls 31 exposed on the upper surface of the turntable 3. The lower surface of the upper pressure plate 4 and the inner bottom surface of the groove 2 are both flat. The purpose is that when the turntable 3 is placed in the groove 2, the balls 31 exposed on its upper surface can contact the upper pressure plate 4. The upper pressure plate 3 can rotate with the mounting base 1 using the balls 31, which makes it easier to disassemble and assemble the angle grinding disc.

[0029] The protective sleeve 5 is fitted onto the outside of the mounting base 1, turntable 3, and upper pressure plate 4 to provide dust protection for these components. The mounting base 1, turntable 3, upper pressure plate 4, and protective sleeve 5 are all mounted on the output spindle of the cutting machine and are on the same center line. The outer diameters of the mounting base 1 and upper pressure plate 4 are the same, and their outer diameters are also the same as the inner diameter of the protective sleeve 5. The top of the protective sleeve 5 has a pressing edge protruding inwards towards the center point. When the protective sleeve 5 is fitted onto the outside of the mounting base 1 and upper pressure plate 4, the protruding pressing edge presses against the upper surface edge of the upper pressure plate 4. This provides better protection for the upper pressure plate 4 and the balls 31 on the turntable 3, preventing waste chips, impurities, or dust from falling onto the turntable 3 or into the ball placement groove during the cutting process, thus affecting the smooth rotation of the balls 31 and ensuring the quality of the turntable 3.

[0030] The working principle of this utility model is as follows: When using this pressure plate structure, first, the mounting base 1 is placed on the output spindle of the cutting machine, and the hole at the bottom of the mounting base 1 is locked in the bracket of the output spindle of the cutting machine. Then, the turntable 3 is placed in the groove 2 at the upper end of the mounting base 1, and the upper pressure plate 4 is placed on the outside of the spindle until its bottom surface is in contact with the upper surface of the turntable 3. Finally, the protective sleeve 5 is placed on the outside of the mounting base 1, the turntable 3 and the upper pressure plate 4.

[0031] After the above-mentioned pressure plate structure is installed, place the angle grinding disc onto the spindle and fit it against the protruding position on the upper end of the upper pressure plate 4. Then press and lock the spindle of the cutting machine to ensure that the spindle will not rotate. Finally, screw the locking disc onto the spindle to lock and fix the angle grinding disc in place (e.g., Figure 5 (as shown);

[0032] When the angle grinding disc needs to be replaced, after locking the spindle, the locking disc is turned to unscrew it from the spindle. During the turning process, the existing angle grinding disc has a lot of friction with the upper pressure plate 4, which can easily cause it to seize up, making it difficult to remove the locking disc. However, this design incorporates ball bearings 31 on the turntable 3, which causes the upper pressure plate 4 and the mounting base 1 to rotate. At this time, when the locking disc is turned, the upper pressure plate 4, the angle grinding disc, and the locking disc will rotate synchronously, reducing friction and making it easy to remove the angle grinding disc.

[0033] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A dead-angle anti-lock grinding disc pressure plate structure, comprising a mounting base (1) installed on the output spindle of a cutting machine, characterized in that, Also includes: A groove (2) is formed on the upper end face of the mounting base (1) for placing and limiting the turntable (3); A turntable (3) is disposed in a groove (2) on the upper end face of the turntable (3), and the outer diameter of the turntable (3) matches the inner diameter of the groove (2); The upper pressure plate (4) is sleeved on the output spindle of the cutting machine and located at the upper end of the turntable (3), and in contact with it; The protective sleeve (5) is fitted onto the outside of the mounting base (1), turntable (3) and upper pressure plate (4) to provide dust protection for the mounting base (1), turntable (3) and upper pressure plate (4). The mounting base (1), turntable (3), upper pressure plate (4) and protective sleeve (5) are all mounted on the output spindle of the cutting machine and are on the same center line.

2. The anti-locking dead angle grinding disc pressure plate structure according to claim 1, characterized in that, The mounting base (1), turntable (3) and upper pressure plate (4) are all provided with round holes at the center of their surfaces for easy mounting on the main shaft of the cutting machine. The surface of the turntable (3) is provided with multiple ball placement grooves in a circular array with the round holes as the center, and ball (31) is rotatably arranged in the ball placement grooves.

3. The anti-locking dead angle grinding disc pressure plate structure according to claim 1, characterized in that, The ball (31) is made of cylindrical metal, and the exposed parts of the ball (31) on the upper and lower surfaces of the turntable (3) are at the same height.

4. The anti-locking dead angle grinding disc pressure plate structure according to claim 1, characterized in that, The upper pressure plate (4) is located at the upper end of the turntable (3) and contacts the multiple balls (31) exposed on the upper surface of the turntable (3). The lower surface of the upper pressure plate (4) and the inner bottom surface of the groove (2) are both flat.

5. The anti-locking dead angle grinding disc pressure plate structure according to claim 1, characterized in that, The outer diameters of the mounting base (1) and the upper pressure plate (4) are the same, and the outer diameters of the mounting base (1) and the upper pressure plate (4) are the same as the inner diameter of the protective sleeve (5). The top of the protective sleeve (5) is provided with a pressing edge protruding towards the center point on the inside. When the protective sleeve (5) is fitted outside the mounting base (1) and the upper pressure plate (4), the protruding pressing edge presses against the edge of the upper surface of the upper pressure plate (4).

Images