Novel grinding disc for steel plate grinding machine

Abstract

The utility model discloses a novel grinding disc for a steel plate grinding machine. The novel grinding disc mainly comprises an upper grinding disc, a lower grinding disc, more than three connecting rods and springs, wherein the number of the springs corresponds to that of the connecting rods; a rotating shaft mounting hole is formed in the center of the upper grinding disc, and more than three upper through holes are further formed in the upper grinding disc; more than three lower threaded holes are formed in the lower grinding disc, and the number and the positions of the upper through holes are in one-to-one correspondence with the number and the positions of the lower threaded holes. The grinding disc consists of the upper grinding disc, the lower grinding disc, the connecting rod and the spring, and the spring is always in a compressed state, so that a certain elastic buffer is formed between the upper grinding disc and the lower grinding disc, the grinding disc can adapt to unevenness of the surface of a steel plate in the grinding process, rigid impact is reduced, the stability of the grinding disc is improved, the service life of the grinding disc is prolonged, and the grinding quality is favorably improved.

Description

Technical Field

[0001] This utility model relates to the field of steel plate grinding and processing, specifically to a new type of grinding disc for steel plate grinding machines. Background Technology

[0002] Steel plate grinding machines transform rough or damaged steel plate surfaces into high-precision, high-smooth finished products through the synergistic action of mechanical force and abrasive. They are common equipment in metal processing for improving product quality and reducing overall costs. The grinding disc is the key component of the steel plate grinding machine, directly contacting the steel plate surface and ensuring efficient removal or surface finishing. Currently, most steel plate grinding machines on the market use an upper and lower grinding disc structure. These structures have the following drawbacks: First, since most grinding discs are connected by simple bolts, the preload of the bolt connection is difficult to maintain for long periods under high-speed operation and vibration. The bolts are prone to loosening, leading to relative displacement of the upper and lower grinding discs and affecting grinding accuracy. Second, although some products incorporate compression coil springs between the upper and lower grinding discs for vibration damping, the layout and strength design of these springs are unreasonable, unable to comprehensively cope with vibrations in different directions. Furthermore, under long-term high-frequency vibration, the springs are prone to fatigue fracture, failing to provide a consistently stable damping effect.

[0003] In summary, the current structure of the grinding discs in steel plate grinding machines has the above-mentioned defects, which cannot meet the current requirements for high precision, long service life and high quality. Therefore, it is urgent to provide a grinding disc that can effectively overcome the above defects. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model proposes a new type of grinding disc for steel plate grinding machines.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a novel grinding disc for a steel plate grinding machine, mainly composed of an upper grinding disc, a lower grinding disc, three or more connecting rods, and springs corresponding to the number of connecting rods; a rotating shaft mounting hole is provided at the center of the upper grinding disc, and three or more upper through holes are also provided on the upper grinding disc; three or more lower threaded holes are provided on the lower grinding disc, and the number and position of the upper through holes correspond one-to-one with the number and position of the lower threaded holes; the connecting rods are fixed between the upper through holes and the corresponding lower threaded holes, and each connecting rod is fitted with a spring, and each spring is in a compressed state between the upper and lower grinding discs.

[0006] Furthermore, the number of the upper through hole, lower threaded hole, connecting rod, and spring are all the same.

[0007] To ensure the use effect of the present utility model, the distance L between the center point of the upper through hole and the center point of the rotating shaft mounting hole is 80 mm to 120 mm.

[0008] As a preferred mode, the distance L between the center point of the upper through hole and the center point of the rotating shaft mounting hole is 100 mm.

[0009] To ensure that the present utility model has good buffering and adjusting functions, the stiffness coefficient of the spring is 18 N / mm to 22 N / mm. As a preferred mode, the stiffness coefficient of the spring is 20 N / mm.

[0010] Meanwhile, the outer diameter of the spring is 50 mm, the inner diameter is 40 mm, the effective number of turns is 5 turns, and the free height is 60 mm.

[0011] The connecting rod is composed of a screw rod, a large thread head arranged at one end of the screw rod, and a small thread head arranged at the other end of the screw rod.

[0012] The upper grinding disc is composed of a disc body and a fixing table integrally formed with the disc body, and the central axis of the fixing table and the central axis of the disc body are on the same straight line.

[0013] Furthermore, the fixing table is a frustum of a cone with a cross-section in the shape of a "convex".

[0014] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0015] 1. The present utility model is composed of an upper grinding disc, a lower grinding disc, a connecting rod and a spring, and the spring is always in a compressed state. Therefore, it can make the upper and lower grinding discs have a certain elastic buffer, adapt to the unevenness of the steel plate surface during the grinding process, reduce the rigid impact, improve the stability and service life of the grinding disc, and help to improve the grinding quality.

[0016] 2. The number and position of the upper through holes and the lower threaded holes of the present utility model correspond one by one, and the distance L between the center point of the upper through hole and the center point of the rotating shaft mounting hole is set between 80 mm and 120 mm, which is beneficial to the reasonable distribution of the grinding force, ensures the symmetry and stability of the grinding disc structure, and makes the grinding force evenly distributed.

[0017] 3. The stiffness coefficient of the spring of the present utility model is between 18 N / mm and 22 N / mm, and its outer diameter is 50 mm, the inner diameter is 40 mm, the effective number of turns is 5 turns, and the free height is 60 mm. The selection of the above parameters can make the spring have appropriate elasticity and buffering ability, which can not only ensure the normal operation of the grinding disc, but also play a good buffering and adjusting role during the grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 for Figure 1 A top-view structural diagram;

[0020] Figure 3 for Figure 2 A schematic diagram of the AA cross-sectional structure;

[0021] Figure 4 This is a schematic diagram of the connecting rod of this utility model.

[0022] The reference numerals in the attached drawings are as follows: 1—upper grinding disc, 2—lower grinding disc, 3—connecting rod, 4—spring, 5—rotary shaft mounting hole, 6—upper through hole, 7—lower threaded hole, 11—disc body, 12—fixed platform, 31—screw, 32—large threaded head, 33—small threaded head. Detailed Implementation

[0023] The following is a detailed description in conjunction with the accompanying drawings. These descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of this utility model.

[0024] Example

[0025] like Figures 1-3 As shown, the novel grinding disc of this utility model mainly consists of four parts: an upper grinding disc 1, a lower grinding disc 2, a connecting rod 3, and a spring 4. The upper grinding disc 1 is mainly used to connect the rotating shaft of the grinding machine and the lower grinding disc 2, thereby allowing the upper grinding disc 1 and the lower grinding disc 2 to be fixed together with the rotating shaft of the grinding machine, ensuring that the upper grinding disc 1 and the lower grinding disc 2 can rotate synchronously with the rotating shaft of the grinding machine.

[0026] The upper grinding disc 1 is composed of a circular disc body 11 and a fixed platform 12 integrally formed with the disc body 11. The fixed platform 12 is a truncated cone with a "convex" shaped cross-section, and the central axis of the truncated cone and the central axis of the disc body 11 are on the same straight line.

[0027] A rotating shaft mounting hole 5 is provided at the center of the upper grinding disc 1 for connecting to the rotating shaft of the grinding machine. This rotating shaft mounting hole 5 is a threaded hole that passes through the disc body 11 of the upper grinding disc 1 and the fixing platform 12. The diameter of the disc body 11 of the upper grinding disc 1 is smaller than the diameter of the lower grinding disc 2, and the thickness of the disc body 11 is smaller than the thickness of the lower grinding disc 2. To facilitate the fixed installation between the upper grinding disc 1 and the lower grinding disc 2, mounting holes are provided on both the upper grinding disc 1 and the lower grinding disc 2 in a one-to-one correspondence of quantity and position. Specifically, a number of upper through holes 6 are provided between the inner edge of the disc body 11 and the outer edge of the fixing platform 12, while a number of lower threaded holes 7 are provided on the lower grinding disc 2, and the number and position of the upper through holes 6 correspond one-to-one with the number and position of the lower threaded holes 7.

[0028] The number of the upper through hole 6 and the lower threaded hole 7 is three or more, such as three, four, five, or six, etc., and there is no particular limitation in this embodiment. In this embodiment, the number of the upper through hole 6 and the lower threaded hole 7 is preferably set to five.

[0029] During installation, the center point of the shaft mounting hole 5 on the upper grinding disc 1 must coincide with the center point of the lower grinding disc 2. All the upper through holes 6 must be arranged in a uniform circular pattern on the upper grinding disc 1, with the center point of the shaft mounting hole 5 as the center and the distance L between the center points of the upper through holes 6 and the center points of the shaft mounting holes 5 as the radius. Since the number and position of the upper through holes 6 correspond one-to-one with the number and position of the lower threaded holes 7, all the lower threaded holes 7 are also arranged in a uniform circular pattern on the lower grinding disc 2, with the center point of the lower grinding disc 2 as the center and L as the radius.

[0030] To ensure the stability of the upper grinding disc 1 and the lower grinding disc 2 during high-speed rotation, the value of L must be neither too short nor too long. Experimental tests showed that a value between 80mm and 120mm for L resulted in good stability. The optimal performance was achieved when L was 100mm.

[0031] Meanwhile, the diameter of the upper through hole 6 and the diameter of the lower threaded hole 7 can be the same or different. In this embodiment, it is preferred to use different diameters. For example, the diameter of the upper through hole 6 can be Φ21mm, while the diameter of the lower threaded hole 7 can be Φ34mm. Using this method not only effectively achieves differentiated connection and fastening, preventing the connecting rod 3 from being installed backwards during installation and ensuring that the upper grinding disc 1 and lower grinding disc 2 are connected correctly, but also creates different force distributions at the connection point. This helps to distribute the pressure and friction during the grinding process more evenly on the lower grinding disc 2, reducing stress concentration, improving the strength and reliability of the entire grinding disc structure, and extending its service life.

[0032] The structure of connecting rod 3 is as follows Figure 4As shown, it is used to connect and fix the upper grinding disc 1 and the lower grinding disc 2. The connecting rod 3 is a double-threaded connecting rod, that is, it is composed of a screw 31, a large threaded head 32 set at one end of the screw 31, and a small threaded head 33 set at the other end of the screw 31. The large threaded head 32 matches the lower threaded hole 7 on the lower grinding disc 2 to ensure that the large threaded head 32 can be fixed in the lower threaded hole 7 by means of threaded connection; while the diameter of the small threaded head 33 and the diameter of the screw 31 are slightly smaller than the diameter of the upper through hole 6 to ensure that the small threaded head 33 and the screw 31 can pass through the upper through hole 6.

[0033] The aforementioned large thread head 32 and small thread head 33 refer to thread ends with different nominal diameters. In this embodiment, the terms large thread head 32 and small thread head 33 are relative; that is, the thread end with the larger nominal diameter is called the large thread head 32, and the thread end with the smaller nominal diameter is called the small thread head 33. For example, in this embodiment, the nominal diameter of the large thread head 32 can be set to M36, while the nominal diameter of the small thread head 33 can be set to M18. M36 indicates that the basic size of the thread major diameter is 36 mm, and M18 indicates that the basic size of the thread major diameter is 18 mm. This is common knowledge in the mechanical field and will not be elaborated further here.

[0034] The spring 4 ensures a relatively fixed distance between the upper grinding disc 1 and the lower grinding disc 2, and also ensures a relatively compressible and recoverable buffer zone between them. To ensure its effectiveness, the stiffness coefficient of the spring 4 is between 18 N / mm and 22 N / mm. Preferably, the outer diameter of the spring 4 is 50 mm, the inner diameter is 40 mm, the effective number of coils is 5, and the free height is 60 mm. In this embodiment, a stiffness coefficient of 20 N / mm is preferably chosen for the spring 4.

[0035] During connection, first install the large threaded heads 32 of all connecting rods 3 into the lower threaded holes 7 of the lower grinding disc 2, and then fit the springs 4 onto the screws 31 of each connecting rod 3. Next, pass the upper through hole 6 of the upper grinding disc 1 through the corresponding screw 31 of the connecting rod 3, so that the springs 4 are positioned between the disc body 11 and the lower grinding disc 2. Finally, use a nut to thread the small threaded head 33 onto the other side of the disc body 11, thus forming a unified whole between the upper grinding disc 1, the lower grinding disc 2, the connecting rods 3, and the springs 4. After installation, the compression force of each spring 4 needs to be adjusted by adjusting the nuts to ensure that the elastic force of each spring 4 is equal.

[0036] As described above, this utility model can be implemented quite well.

Claims

1. A new grinding disc for a steel plate grinding machine, characterized in that, The application relates to a new grinding disc for a steel plate grinding machine, which is mainly composed of an upper grinding disc (1), a lower grinding disc (2), three or more connecting rods (3) and springs (4) corresponding to the connecting rods (3); a rotating shaft mounting hole (5) is arranged at the center of the upper grinding disc (1), and three or more upper through holes (6) are arranged on the upper grinding disc (1); three or more lower threaded holes (7) are arranged on the lower grinding disc (2), and the number and positions of the upper through holes (6) correspond to those of the lower threaded holes (7) one by one; the connecting rods (3) are fixed between the upper through holes (6) and the corresponding lower threaded holes (7), each connecting rod (3) is sleeved with a spring (4), and each spring (4) is in a compressed state between the upper grinding disc (1) and the lower grinding disc (2).

2. A new abrasive disc for steel plate grinding machine as claimed in claim 1, wherein, The number of the upper through holes (6), the lower threaded holes (7), the connecting rods (3) and the springs (4) is the same.

3. A new abrasive disc for a steel plate grinding machine as claimed in claim 2, wherein, The distance L between the center point of the upper through hole (6) and the center point of the rotating shaft mounting hole (5) is 80mm-120mm.

4. A new abrasive disc for a steel plate grinding machine as claimed in claim 3, wherein, The distance L between the center point of the upper through hole (6) and the center point of the rotating shaft mounting hole (5) is 100mm.

5. A new abrasive disc for steel plate grinding machine as claimed in any one of claims 1 to 4, wherein, The rigidity coefficient of the spring (4) is 18N / mm-22N / mm.

6. The new grinding disc for a steel plate grinding machine according to claim 5, wherein the rigidity coefficient of the spring (4) is 20N / mm.

7. A new abrasive disc for steel plate grinding machine as claimed in claim 5 wherein, The outer diameter of the spring (4) is 50mm, the inner diameter is 40mm, the effective number of turns is 5, and the free height is 60mm.

8. A new abrasive disc for steel plate grinding machine as claimed in any one of claims 1 to 4, wherein, The connecting rod (3) is composed of a screw rod (31), a large threaded head (32) arranged at one end of the screw rod (31) and a small threaded head (33) arranged at the other end of the screw rod (31).

9. A new abrasive disc for a steel plate grinding machine as claimed in claim 8, characterized in that, The upper grinding disc (1) is composed of a disc body (11) and a fixing table (12) integrally formed with the disc body (11), and the central axis of the fixing table (12) is located on the same straight line as the central axis of the disc body (11).

10. A new abrasive disc for a steel plate grinding machine as claimed in claim 9, wherein, The fixing table (12) is a circular table body with a cross section in the shape of a Chinese character "Ku".

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