Grinding wheel mounting and fixing structure

Abstract

The utility model discloses a grinding wheel installing and fixing structure which comprises a grinding wheel body, a fixing disc is fixedly arranged in the center of the grinding wheel body, a first chuck and a second chuck are arranged on the two sides of the fixing disc respectively, a through hole is formed in the center of the fixing disc, and a main shaft is connected to the middle of the first chuck in an inserted mode. One end of the spindle penetrates through the through hole and then the outer surface is in threaded connection with the second chuck. The first chuck, the second chuck, the main shaft, the convex ring and the bolt are arranged, the second chuck is rotated to be in threaded connection with the main shaft, so that the distance between the first chuck and the grinding wheel and the distance between the second chuck and the grinding wheel are shortened, and when the fit clearance is proper, the screw hole in the outer arc face of the second chuck corresponds to the screw hole in the outer arc face of the convex ring in position; the second chuck and the convex ring are connected through the bolt, so that the positions of the first chuck and the second chuck are fixed, and the situation that the high-speed rotating grinding work of the grinding wheel is affected due to the too large or too small gap is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding wheels, in particular to a grinding wheel installation and fixing structure. Background Art

[0002] Grinding wheel is a bonded abrasive tool that has a certain strength and is made of ordinary abrasives bonded into a certain shape (mostly round with a through hole in the center) by a binder. Grinding wheel is the most widely used abrasive tool. It rotates at high speed when used and can be used for rough grinding, semi-finishing grinding and fine grinding of the outer circle, inner circle, plane and various profiles of metal or non-metal workpieces, as well as grooving and cutting.

[0003] In the prior art, the installation and fixation of the grinding wheel generally relies only on the tightening nut, which has a poor anti-falling effect. Therefore, workers often over-tighten the nut during installation to prevent the nut from loosening during use, which will cause the grinding wheel to loosen and affect the grinding work. However, the clearance between the inner diameter of the grinding wheel and the spindle and chuck should be appropriate, and should not be squeezed hard. Too large or too small a clearance will affect the high-speed rotation grinding of the grinding wheel. Utility Model Content

[0004] The utility model aims to provide a grinding wheel installation and fixing structure to solve the problem in the prior art that the fastening nut is often installed too tight or too loose, resulting in the matching clearance between the inner diameter of the grinding wheel and the spindle and the chuck being too large or too small, thus affecting the high-speed rotation grinding work of the grinding wheel.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a grinding wheel installation and fixing structure, including a grinding wheel body, a fixed disk is fixedly provided at the center position of the grinding wheel body, a first chuck and a second chuck are respectively provided on both sides of the fixed disk, and a through hole is opened at the center position of the fixed disk, a main shaft is inserted in the middle of the first chuck, and the outer surface of the main shaft is threadedly connected to the second chuck after one end passes through the through hole, a convex ring is provided on the side of the fixed disk close to the second chuck, and the convex ring and the fixed disk are an integrally formed structure, and four bolts are radially arranged on the outer arc surface of the convex ring with the main shaft as the center, and the bolts are used to connect the convex ring and the second chuck.

[0006] Preferably, an integral connecting sleeve is fixedly connected to one side of the second chuck close to the fixed disk, the outer surface of the connecting sleeve fits with the inner wall of the through hole, and one end of the connecting sleeve is inserted into the through hole.

[0007] Preferably, the outer surface of the main shaft is threadedly connected to the connecting sleeve.

[0008] Preferably, four positioning blocks are evenly fixedly connected to a side of the first chuck close to the fixed disk, and four positioning grooves matching with the positioning blocks are formed on a side of the fixed disk close to the first chuck.

[0009] Preferably, the positioning block corresponds to the position of the bolt.

[0010] Preferably, two clamping grooves are formed on a side of the second chuck away from the connecting sleeve.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model is provided with a first chuck, a second chuck, a main shaft, a convex ring and a bolt. The second chuck is rotated to shorten the distance between the first chuck, the second chuck and the grinding wheel through the threaded connection between the second chuck and the main shaft. When the matching clearance is appropriate, the screw hole on the outer arc surface of the second chuck corresponds to the position of the screw hole on the outer arc surface of the convex ring. The connection between the second chuck and the convex ring is achieved by the bolt, so that the positions of the first chuck and the second chuck are fixed, and it is avoided that the clearance is too large or too small to affect the high-speed rotation grinding work of the grinding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the split structure of the utility model from the first viewing angle;

[0016] Figure 3 This is a schematic diagram of the split structure of the utility model from a second viewing angle.

[0017] In the figure: 1, grinding wheel body; 2, fixed plate; 3, first chuck; 4, second chuck; 5, main shaft; 6, connecting sleeve; 7, through hole; 8, positioning groove; 9, convex ring; 10, bolt; 11, positioning block; 12, positioning groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3In the embodiment of the utility model, a grinding wheel installation and fixing structure includes a grinding wheel body 1, a fixed plate 2 is fixedly provided at the center of the grinding wheel body 1, a first chuck 3 and a second chuck 4 are respectively provided on both sides of the fixed plate 2, and a through hole 7 is opened at the center of the fixed plate 2, the grinding wheel body 1 is sleeved on the main shaft 5 through the through hole 7, the main shaft 5 is inserted in the middle of the first chuck 3, and the outer surface of the main shaft 5 is threadedly connected with the second chuck 4 after one end passes through the through hole 7, and the threaded connection between the second chuck 4 and the main shaft 5 is realized by rotating the second chuck 4, thereby realizing the preliminary installation of the grinding wheel body 1.

[0020] See also Figure 1-3 A convex ring 9 is provided on one side of the fixed disk 2 close to the second chuck 4, which is matched with the outer surface of the second chuck 4. The convex ring 9 and the fixed disk 2 are an integrally formed structure. Four bolts 10 are radially arranged on the outer arc surface of the convex ring 9 with the main shaft 5 as the center. The bolts 10 are used to connect the convex ring 9 and the second chuck 4. The second chuck 4 is rotated until the fitting clearance between the fixed disk 2 and the first chuck 3 and the second chuck 4 is appropriate, and the screw holes on the outer arc surface of the second chuck 4 correspond to the screw holes on the outer arc surface of the convex ring 9. The connection between the second chuck 4 and the convex ring 9 is realized by the bolts 10, so that the fitting clearance between the fixed disk 2 and the first chuck 3 and the second chuck 4 is appropriate, so as to avoid the clearance being too large or too small to affect the high-speed rotation grinding work of the grinding wheel.

[0021] See also Figure 2-3 An integrated connecting sleeve 6 is fixedly connected to one side of the second chuck 4 close to the fixed plate 2, the outer surface of the connecting sleeve 6 fits with the inner wall of the through hole 7, one end of the connecting sleeve 6 is inserted into the through hole 7, and the connecting sleeve 6 is inserted into the through hole 7 and fits with the through hole 7, so that the connection between the second chuck 4 and the fixed plate 2 is tighter, and the grinding wheel body 1 is not only fixed by the connection between the second chuck 4 and the spindle 5.

[0022] See also Figure 2-3 The outer surface of the main shaft 5 is threadedly connected to the connecting sleeve 6. The setting of the threaded connection increases the connection between the connecting sleeve 6 and the main shaft 5, making the fixed installation of the grinding wheel body 1 more secure.

[0023] See also Figure 2-3 Four positioning blocks 11 are evenly fixed on one side of the first chuck 3 close to the fixed plate 2, and four positioning grooves 12 that match the positioning blocks 11 are opened on one side of the fixed plate 2 close to the first chuck 3. The positioning blocks 11 are inserted into the positioning grooves 12 to position the grinding wheel body 1 to prevent relative rotation between the grinding wheel body 1 and the spindle 5 when the main shaft 5 rotates and drives the grinding wheel body 1 to rotate.

[0024] See also Figure 1-3In order to achieve appropriate matching clearance between the above-mentioned fixed disk 2 and the first chuck 3 and the second chuck 4, the screw hole on the outer arc surface of the second chuck 4 corresponds to the position of the screw hole on the outer arc surface of the convex ring 9, and the positioning block 11 corresponds to the position of the bolt 10. The positioning block 11 and the positioning groove 12 are set to position the fixed disk 2, and their positions correspond to the positions of the bolts 10, so that when the second chuck 4 is rotated to a suitable position, the screw hole on the outer arc surface of the second chuck 4 can correspond to the position of the screw hole on the outer arc surface of the convex ring 9.

[0025] See also Figure 1-3 Two clamping grooves 8 are provided on one side of the second chuck 4 away from the connecting sleeve 6 , and the staff uses corresponding tools to insert the clamping grooves 8 to facilitate the rotation of the second chuck 4 .

[0026] The working principle and use process of the utility model are as follows: when in use, the grinding wheel body 1 is first sleeved on the spindle 5 through the through hole 7, and the positioning block 11 is inserted into the positioning groove 12 to position the grinding wheel body 1 to prevent the grinding wheel body 1 from rotating relative to the spindle 5 when the spindle 5 rotates to drive the grinding wheel body 1 to rotate. The second chuck 4, the connecting sleeve 6 and the spindle 5 are threadedly connected by rotating the second chuck 4. At this time, the connecting sleeve 6 is inserted into the through hole 7 and fits with the through hole 7, so that the connection between the second chuck 4 and the fixed plate 2 is tighter, and the grinding wheel body 1 is not only fixed by the connection between the second chuck 4 and the spindle 5. The staff uses the corresponding tool to insert the positioning groove 8 to The second chuck 4 is rotated until the fitting clearance between the fixed plate 2 and the first chuck 3 and the second chuck 4 is appropriate, and the screw hole on the outer arc surface of the second chuck 4 corresponds to the screw hole position on the outer arc surface of the convex ring 9. The positioning block 11 and the positioning groove 12 are set to position the fixed plate 2, and their positions correspond to the positions of the bolts 10, so that when the second chuck 4 is rotated to a suitable position, the screw hole on the outer arc surface of the second chuck 4 can correspond to the screw hole position on the outer arc surface of the convex ring 9, and the connection between the second chuck 4 and the convex ring 9 is realized by the bolts 10, so that the fitting clearance between the fixed plate 2 and the first chuck 3 and the second chuck 4 is appropriate, to avoid the clearance being too large or too small to affect the high-speed rotation grinding work of the grinding wheel.

[0027] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A grinding wheel installation and fixing structure, comprising a grinding wheel body (1), characterized in that: A fixed disk (2) is fixedly arranged at the center of the grinding wheel body (1), a first chuck (3) and a second chuck (4) are respectively arranged on both sides of the fixed disk (2), and a through hole (7) is opened at the center of the fixed disk (2), a main shaft (5) is inserted in the middle of the first chuck (3), and one end of the main shaft (5) passes through the through hole (7) and the outer surface is threadedly connected with the second chuck (4), a convex ring (9) is arranged on the side of the fixed disk (2) close to the second chuck (4) and is matched with the outer surface of the second chuck (4), the convex ring (9) and the fixed disk (2) are an integrally formed structure, and four bolts (10) are arranged radially on the outer arc surface of the convex ring (9) with the main shaft (5) as the center, and the bolts (10) are used to connect the convex ring (9) and the second chuck (4).

2. A grinding wheel installation and fixing structure according to claim 1, characterized in that: An integral connecting sleeve (6) is fixedly connected to one side of the second chuck (4) close to the fixed plate (2); the outer surface of the connecting sleeve (6) fits with the inner wall of the through hole (7); one end of the connecting sleeve (6) is inserted into the interior of the through hole (7).

3. A grinding wheel installation and fixing structure according to claim 2, characterized in that: The outer surface of the main shaft (5) is threadedly connected to the connecting sleeve (6).

4. The grinding wheel installation and fixing structure according to claim 1, characterized in that: Four positioning blocks (11) are evenly fixedly connected to one side of the first chuck (3) close to the fixed disk (2), and four positioning grooves (12) that fit with the positioning blocks (11) are formed on one side of the fixed disk (2) close to the first chuck (3).

5. The grinding wheel installation and fixing structure according to claim 4, characterized in that: The positioning block (11) corresponds to the position of the bolt (10).

6. The grinding wheel installation and fixing structure according to claim 1, characterized in that: Two clamping grooves (8) are formed on a side of the second clamping disc (4) away from the connecting sleeve (6).

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