Fan-shaped spliced millstone
The fan-shaped spliced grinding wheel design solves the problems of short grinding wheel service life and poor grinding effect, achieves uniform wear of the grinding wheel and removal of debris, and improves the grinding effect and ground flatness.
Patent Information
- Application Number
- CN202422782836.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-11-14
AI Technical Summary
The existing grinding disc has a short service life, poor grinding effect, and easily causes scratches on the ground during the grinding process.
The grinding disc adopts a fan-shaped spliced grinding disc design. The grinding head consists of two first grinding teeth and one second grinding tooth. The first grinding tooth is farther away from the end face of the disc than the second grinding tooth. The second grinding tooth serves as a supporting transition tooth. The outer edge linear speed is high and the inner edge linear speed is low, which increases the contact area and removes debris through the second grinding tooth.
It increases the service life of the grinding disc, reduces uneven wear, improves the grinding effect, and avoids scratches on the ground.
Smart Images
Figure CN223406719U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a grinding disc, in particular to a fan-shaped spliced grinding disc. Background Art
[0002] A grinding disc is a disc-shaped abrasive tool used in a grinding machine. It consists of a disc body and a grinding head, which is welded or mounted on the disc body. The grinding head is driven by the grinding machine to rotate the disc at high speed, smoothing the work surface. Floor grinders are a crucial tool for floor preparation in the construction industry. They grind the work surface by rotating the disc at high speed, and the grinding head is the core component of the floor grinding disc.
[0003] Typically, when a grinding disc rotates, the inner and outer linear speeds of the grinding head differ, resulting in significant differences in wear. Wear increases faster near the edge, while the center rotates at a much lower linear speed, resulting in minimal wear. Consequently, this difference in wear between the inner and outer edges of the grinding head significantly impacts the disc's lifespan and, over time, can even affect the grinding performance. Furthermore, if debris generated by the grinding disc is not removed promptly, it can easily scratch the surface, severely impacting the grinding effect. Utility Model Content
[0004] The main purpose of the utility model is to provide a fan-shaped spliced grinding disc to solve the problems of short service life and poor grinding effect of existing grinding discs.
[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:
[0006] A fan-shaped spliced grinding disc, comprising:
[0007] disc body;
[0008] The grinding head is provided with a plurality of grinding heads, which are fixed on one end face of the disc body in the circumferential direction of the disc body. Each of the grinding heads includes a first grinding tooth and a second grinding tooth with a fan-shaped end face. There are two first grinding teeth, which are fixedly provided on the end face of the disc body. The second grinding tooth is fixedly provided between the two first grinding teeth. The distance between the first grinding tooth and the end face of the disc body away from the first grinding tooth is greater than the distance between the second grinding tooth and the end face of the disc body away from the second grinding tooth.
[0009] As a further technical solution, the distance between the end surface of the first grinding tooth away from the disc body and the end surface of the second grinding tooth away from the disc body is 0.3 mm-0.7 mm.
[0010] As a further technical solution, the area of the sector-shaped end face of the first grinding tooth is the same as the area of the sector-shaped end face of the second grinding tooth.
[0011] As a further technical solution, the inner diameters of the first grinding teeth and the second grinding teeth are both 35mm-45mm, and the outer diameters are both 95mm-105mm.
[0012] As a further technical solution, there are four grinding heads, which are evenly distributed on the disc body in the circumferential direction of the disc body.
[0013] As a further technical solution, the disc body is provided with a plurality of groups of positioning holes of different sizes, each group of positioning holes includes two positioning holes, and the two positioning holes are symmetrically arranged on both sides of the center of the disc body.
[0014] As a further technical solution, a connecting shaft is fixedly provided on the end surface of the disc body away from the grinding head, and the central axis of the connecting shaft is collinear with the central axis of the disc body.
[0015] The beneficial effects of the utility model are:
[0016] 1. The utility model has a simple structure. Each grinding head is composed of three sector-shaped grinding teeth: the second grinding tooth and two first grinding teeth. The first grinding tooth is the grinding tooth, and the middle second grinding tooth is the supporting transition tooth, which has a good grinding effect.
[0017] 2. The grinding disc includes four grinding heads, which increases the contact area between the grinding block and the ground, reduces the pressure of the grinding head on the ground, and can reduce the damage to the grinding teeth when encountering hard objects such as steel bars during the grinding process;
[0018] 3. During grinding, the outer edge of the grinding head has a high linear speed, resulting in large grinding losses, while the inner edge has a low linear speed, resulting in small grinding losses. The first and second grinding teeth are fan-shaped, with large outer diameters and small inner diameters, which can effectively balance the losses caused by the linear speed differences between the outer and inner edges of the module.
[0019] 4. The second grinding tooth is located in the middle of the two first grinding teeth. The bottom height of the second grinding tooth is lower than the bottom height of the first grinding teeth on both sides. The space formed by the height difference can remove the debris generated during the grinding process, effectively improving the problem of ground scratches caused by debris. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0022] Figure 2 It is a three-dimensional structural schematic diagram of the utility model from another angle.
[0023] Description of Reference Numerals
[0024] 1. Disc body; 2. Grinding head; 21. First grinding tooth; 22. Second grinding tooth; 3. Positioning hole; 4. Connecting shaft. DETAILED DESCRIPTION
[0025] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0026] like Figure 1-Figure 2 As shown, the utility model proposes a fan-shaped spliced grinding disc, which mainly includes a disc body 1 and a grinding head 2.
[0027] There are multiple grinding heads 2, which are fixed to one end face of the disc body 1 in a circumferential direction around the disc body 1. In this embodiment, there are four grinding heads 2, which are evenly distributed around the disc body 1 in a circumferential direction around the disc body 1. This ensures that the grinding disc is evenly stressed during operation, improving stability, increasing the contact area between the grinding block and the ground, and reducing the pressure exerted by the grinding head 2 on the ground. This can reduce damage to the grinding teeth when encountering hard objects such as steel bars during the grinding process. A connecting shaft 4 is fixedly provided on the end face of the disc body 1 away from the grinding head 2. The central axis of the connecting shaft 4 is collinear with the central axis of the disc body 1, facilitating the rotation of the disc body 1 on the floor grinder via the connecting shaft 4 and ensuring the smooth rotation of the grinding disc.
[0028] Each grinding head 2 includes a first grinding tooth 21 and a second grinding tooth 22 with a fan-shaped end surface. There are two first grinding teeth 21, both fixedly arranged on the end surface of the disc body 1, and the second grinding tooth 22 fixedly arranged between the two first grinding teeth 21. The distance from the end surface of the first grinding tooth 21 away from the disc body 1 to the disc body 1 is greater than the distance from the end surface of the second grinding tooth 22 away from the disc body 1 to the disc body 1, that is, the thickness of the second grinding tooth 22 is less than the thickness of the first grinding tooth 21, and the distance between the end surface of the first grinding tooth 21 away from the disc body 1 and the end surface of the second grinding tooth 22 away from the disc body 1 is 0.3mm-0.7mm, preferably 0.5mm. The area of the fan-shaped end surface of the first grinding tooth 21 is the same as the area of the fan-shaped end surface of the second grinding tooth 22, ensuring the balance of the grinding disc during the grinding process. The inner diameter of the first grinding tooth 21 and the second grinding tooth 22 are both 35mm-45mm, preferably 40mm, and the outer diameter is both 95mm-105mm, preferably 100mm.
[0029] Each grinding head 2 in this embodiment is composed of three fan-shaped grinding teeth, namely, a second grinding tooth 22 and two first grinding teeth 21. The first grinding tooth 21 is a grinding tooth, and the middle second grinding tooth 22 is a supporting transition tooth. During grinding, the outer edge of the grinding head 2 has a high linear velocity and a large grinding loss, while the inner edge has a low linear velocity and a small grinding loss. The fan-shaped first grinding teeth 21 and the second grinding teeth 22 have a large outer diameter and a small inner diameter, which can well balance the loss difference caused by the linear velocity difference between the outer and inner edges of the module. The bottom height of the second grinding teeth 22 is lower than the bottom height of the first grinding teeth 21 on both sides. The space formed by the distance can remove the debris generated during the grinding process, effectively improving the problem of ground scratches caused by debris.
[0030] The disc body 1 is provided with multiple groups of positioning holes 3 of varying sizes, each group of positioning holes 3 comprising two positioning holes 3, which are symmetrically arranged on either side of the center of the disc body 1. The positioning holes 3 are provided for insertion of the positioning shaft on the floor grinder, thereby limiting the circumferential position of the disc body 11 and preventing relative rotation between the grinding disc and the grinder. The multiple groups of positioning holes 3 of varying sizes can be adapted for installation on different types of grinders, providing enhanced practicality. In this embodiment, there are two groups of positioning holes 3, i.e., four positioning holes 3, each of which is located between two adjacent grinding heads 2.
[0031] The above description is only a preferred embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
Claims
1. A fan-shaped spliced grinding disc, characterized in that: include: Plate (1); A grinding head (2), wherein the grinding heads (2) are multiple and fixedly arranged on one end face of the disc body (1) in the circumferential direction of the disc body (1), each of the grinding heads (2) comprises a first grinding tooth (21) and a second grinding tooth (22) whose end faces are arranged in a fan shape, the first grinding teeth (21) are two and are fixedly arranged on the end face of the disc body (1), the second grinding tooth (22) is fixedly arranged between the two first grinding teeth (21), and the distance from the end face of the first grinding tooth (21) away from the disc body (1) to the disc body (1) is greater than the distance from the end face of the second grinding tooth (22) away from the disc body (1) to the disc body (1).
2. The fan-shaped spliced grinding disc according to claim 1, characterized in that: The distance between the end surface of the first grinding tooth (21) away from the disc body (1) and the end surface of the second grinding tooth (22) away from the disc body (1) is 0.3 mm-0.7 mm.
3. The fan-shaped spliced grinding disc according to claim 1, characterized in that: The area of the sector-shaped end surface of the first grinding tooth (21) is the same as the area of the sector-shaped end surface of the second grinding tooth (22).
4. The fan-shaped spliced grinding disc according to claim 1, characterized in that: The inner diameters of the first grinding teeth (21) and the second grinding teeth (22) are both 35 mm to 45 mm, and the outer diameters are both 95 mm to 105 mm.
5. The fan-shaped spliced grinding disc according to claim 1, characterized in that: There are four grinding heads (2), which are evenly distributed on the disc body (1) in the circumferential direction of the disc body (1).
6. The fan-shaped spliced grinding disc according to claim 1, characterized in that: The disk body (1) is provided with a plurality of groups of positioning holes (3) of different sizes, each group of positioning holes (3) comprises two positioning holes, and the two positioning holes (3) are symmetrically arranged on both sides of the center of the disk body (1).
7. The fan-shaped spliced grinding disc according to claim 1, characterized in that: A connecting shaft (4) is fixedly provided on the end surface of the disc body (1) away from the grinding head (2), and the central axis of the connecting shaft (4) is collinear with the central axis of the disc body (1).