Inner diameter grinding device for bicycle hub production

Abstract

The utility model relates to an inner diameter polishing device for bicycle hub production, which belongs to the technical field of polishing and comprises a worktable, a positioning mechanism for positioning a bicycle hub is arranged at the left end of the upper surface of the worktable, a bearing plate is fixed at the right end of the upper surface of the worktable, and a driving motor is fixed on the right side of the bearing plate. An output shaft of the driving motor penetrates through the bearing plate, extends to the left side of the bearing plate and is provided with a grinding mechanism used for grinding, and a material collecting box is placed on the upper surface of the workbench and located on the left side of the bearing plate. According to the inner diameter grinding device for bicycle hub production, bicycle hubs of different sizes can be positioned through the arranged positioning mechanism, the height of the bicycle hubs can be adjusted through mutual cooperation of a rotating rod, a rotating gear, a toothed plate and a bearing plate, adjustment with the help of tools is not needed, and the practicability is high. And therefore, the polishing efficiency of the inner diameter of the bicycle hub is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding, in particular to an inner diameter grinding device for the production of bicycle hubs. Background Technique

[0002] The hub, commonly known as the "hub barrel", is the barrel outside the axle that connects the spokes, usually also called the axle skin. According to different arrangements of the number of spokes, there are generally the weaving methods of "diffuse 3" and "diffuse 5". There are two types of hubs: iron hubs and aluminum hubs. Iron hubs are the hubs of ordinary bicycles for home use, and aluminum hubs are generally more high-end hubs, such as the hubs of mountain bikes, performance bikes, road bikes, etc.

[0003] By searching, it is found that the Chinese patent publication number: CN213970300U discloses an inner diameter grinding device for the production of bicycle hubs, including an AC motor, a sandpaper grinding roller, a fixed top plate, an electric push rod, a fixing plate, a lifting rod, a support sleeve rod and a positioning base. The support sleeve rod is welded to the left side of the upper end surface of the operating table. The lifting rod is sleeved inside the support sleeve rod. The fixing plate is welded to the upper end surface of the lifting rod. The electric push rod is assembled at the middle position of the right end surface of the fixing plate. The positioning base is welded to the lower side of the right end surface of the connecting side plate. The AC motor is assembled on the upper side of the right end surface of the side vertical plate. The sandpaper grinding roller is installed on the left side of the AC motor. This design solves the problem that the original grinding device does not have adjustable ability and is not convenient to use. The utility model has a reasonable structure, adjustable ability, is convenient for grinding the inner diameter of the bicycle hub, and has strong practicability. However, in this utility model, the staff needs to use an external wrench to adjust the fixing bolts, which is not only cumbersome in use, increases the labor intensity of the staff, but also the fixing bolts will cause the phenomenon of slipping threads after being screwed multiple times, thereby reducing the grinding efficiency of the inner diameter of the bicycle hub. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an inner diameter grinding device for the production of bicycle hubs, which has the advantages of being convenient to adjust the grinding height, etc., and solves the problem that the staff needs to use an external wrench to adjust the fixing bolts, which is not only cumbersome in use, increases the labor intensity of the staff, but also the fixing bolts will cause the phenomenon of slipping threads after being screwed multiple times, thereby reducing the grinding efficiency of the inner diameter of the bicycle hub.

[0005] To achieve the above object, the present utility model provides the following technical solutions: An inner diameter grinding device for bicycle hub production, including a workbench, a positioning mechanism for positioning a bicycle hub is provided at the left end of the upper surface of the workbench, a load-bearing plate is fixed at the right end of the upper surface of the workbench, a driving motor is fixed on the right side of the load-bearing plate, the output shaft of the driving motor penetrates through the load-bearing plate and extends to the left side of the load-bearing plate and is provided with a grinding mechanism for grinding, and a material receiving box is placed on the upper surface of the workbench and to the left of the load-bearing plate;

[0006] The positioning mechanism includes an installation box fixed at the left end of the upper surface of the workbench. Between the opposite sides of the left and right inner side walls of the installation box cavity, a rotating rod is rotatably connected through bearings. At both the left and right ends of the outer surface of the rotating rod, a rotating gear is fixed. The back surface of the rotating gear is meshed with a toothed plate. The upper surface of the toothed plate penetrates and extends above the installation box, and the upper surfaces of the two toothed plates are fixed with the same bearing plate. An electric push rod is fixed at the left end of the upper surface of the bearing plate. The piston rod of the electric push rod is fixed with a positioning frame. Between the opposite sides of the inner top wall and the inner bottom wall of the positioning frame, a bidirectional screw rod is rotatably connected through bearings. At both the upper and lower ends of the outer surface of the bidirectional screw rod, a screw sleeve is threadedly connected. There are two arc-shaped clamping plates on the right side of the positioning frame.

[0007] Further, the left side of the rotating rod penetrates through the installation box and extends to the left side of the installation box and is fixed with a handle. At both the left and right ends of the inner bottom wall of the installation box, a guide rod is fixed. The toothed plate makes a linear up and down movement on the outer surface of the guide rod.

[0008] Further, at both the left and right ends of the upper surface of the installation box, a guide hole is opened. The size of the inner cavity of the guide hole is adapted to the size of the toothed plate. A telescopic sleeve rod is fixed in the middle between the opposite sides of the bearing plate and the inner bottom wall of the installation box.

[0009] Further, the cross-sectional shape of the positioning frame is L-shaped. A chute is opened at the right end of the upper surface of the bearing plate. A slider is fixed on the lower surface of the positioning frame. The slider makes a horizontal linear movement in the inner cavity of the chute.

[0010] Further, at the top and bottom of the left inner side wall of the positioning frame cavity, a limiting groove is opened. A limiting block is fixed on the left side of the screw sleeve. The limiting block makes a linear up and down movement in the inner cavity of the limiting groove. A connecting rod is fixed on the left side of the arc-shaped clamping plate. The left side of the connecting rod is fixed with the screw sleeve.

[0011] Further, the grinding mechanism includes a fixed rod provided on the left side of the output shaft of the driving motor. A fixed sleeve is provided on the outer surface of the fixed rod. A grinding roller is fixed on the outer surface of the fixed sleeve.

[0012] Furthermore, an external thread is provided on the outer surface of the right end of the fixed rod, and a movable plate is threadedly connected to the right end of the fixed rod. Annular plates are fixed to the top and bottom on the left side of the movable plate, and annular grooves adapted to the sizes of the annular plates are formed at the top and bottom on the right side of the grinding roller.

[0013] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0014] 1. For the inner diameter grinding device for bicycle hub production, the positioning mechanism provided can position bicycle hubs of different sizes, and can adjust the height of the bicycle hub by the mutual cooperation between the rotating rod, the rotating gear, the toothed plate and the bearing plate, without the need to use tools for adjustment, thereby improving the grinding efficiency of the inner diameter of the bicycle hub.

[0015] 2. For the inner diameter grinding device for bicycle hub production, the rotation of the movable plate drives the annular plate to rotate, so that the annular plate moves out of the inner cavity of the annular groove, and then the grinding roller is pulled to the left, so that the fixed sleeve moves to the left until the grinding roller is withdrawn to replace a grinding roller with a suitable size, and the grinding roller can be disassembled and replaced, so as to grind bicycle hubs with different inner diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural view of the present utility model;

[0017] Figure 2 is a schematic structural view of the positioning mechanism of the present utility model;

[0018] Figure 3 is a schematic structural view of a part of the positioning mechanism of the present utility model;

[0019] Figure 4 is a schematic structural view of the grinding mechanism of the present utility model.

[0020] In the figure: 1 workbench, 2 positioning mechanism, 201 mounting box, 202 rotating rod, 203 rotating gear, 204 toothed plate, 205 bearing plate, 206 electric push rod, 207 positioning frame, 208 bidirectional screw rod, 209 screw sleeve, 210 arc-shaped clamping plate, 3 load-bearing plate, 4 driving motor, 5 grinding mechanism, 501 fixed rod, 502 fixed sleeve, 503 grinding roller, 6 material receiving box. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figure 1 , an inner diameter grinding device for the production of a bicycle hub in this embodiment includes a workbench 1. A positioning mechanism 2 for positioning the bicycle hub is provided at the left end of the upper surface of the workbench 1. A bearing plate 3 is fixed at the right end of the upper surface of the workbench 1. A driving motor 4 is fixed on the right side of the bearing plate 3. The output shaft of the driving motor 4 penetrates through the bearing plate 3 and extends to the left side of the bearing plate 3 and is provided with a grinding mechanism 5 for grinding. A material receiving box 6 is placed on the upper surface of the workbench 1 and to the left of the bearing plate 3.

[0023] Please refer to Figures 2 to 3 , in order to adjust the height of the bicycle hub without the aid of tools, the positioning mechanism 2 in this embodiment includes an installation box 201 fixed at the left end of the upper surface of the workbench 1. Rotating rods 202 are rotatably connected between the opposite sides of the left and right inner side walls of the inner cavity of the installation box 201 through bearings. Rotating gears 203 are fixed at both the left and right ends of the outer surface of the rotating rod 202. A toothed plate 204 is meshed and connected to the back of the rotating gear 203. By rotating the rotating rod 202, the rotation of the rotating rod 202 causes the two rotating gears 203 fixed on its surface to rotate. The rotation of the rotating gear 203 causes the toothed plate 204 engaged with it to move upward. The upper surface of the toothed plate 204 penetrates through and extends above the installation box 201, and a same bearing plate 205 is fixed on the upper surfaces of the two toothed plates 204. The movement of the two toothed plates 204 can push the bearing plate 205 upward, so as to adjust the height of the bicycle hub. An electric push rod 206 is fixed at the left end of the upper surface of the bearing plate 205. A positioning frame 207 is fixed on the piston rod of the electric push rod 206. Until the bicycle hub is adjusted to a suitable height, then start the electric push rod 206. The piston rod of the electric push rod's 206 moves to the right, which can push the positioning frame 207 to move to the right, and further make the bicycle hub sleeved on the outer surface of the grinding roller 503.

[0024] A bidirectional screw rod 208 is rotatably connected between the opposite sides of the inner top wall and the inner bottom wall of the positioning frame 207 through a bearing. Both the upper and lower ends of the outer surface of the bidirectional screw rod 208 are threadedly connected with screw sleeves 209. Two arc-shaped clamping plates 210 are arranged on the right side of the positioning frame 207. The bicycle hub is located on the opposite side of the two arc-shaped clamping plates 210. Then, the bidirectional screw rod 208 is rotated. The rotation of the bidirectional screw rod 208 causes the two screw sleeves 209 threadedly connected to its surface to move relative to each other. Furthermore, the movement of the screw sleeves 209 drives the arc-shaped clamping plates 210 to move through the connecting rods. Thus, the relative movement of the two arc-shaped clamping plates 210 can position the bicycle hub.

[0025] Among them, the left side of the rotating rod 202 penetrates through the installation box 201 and extends to the left side of the installation box 201 and is fixed with a handle. Guide rods are fixed at both the left and right ends of the inner bottom wall of the installation box 201. The toothed plate 204 moves linearly up and down on the outer surface of the guide rod. Guide holes are opened at both the left and right ends of the upper surface of the installation box 201. The size of the inner cavity of the guide hole is adapted to the size of the toothed plate 204. A telescopic sleeve rod is fixed in the middle between the opposite side of the bearing plate 205 and the inner bottom wall of the installation box 201.

[0026] It should be noted that an installation hole is opened on the right side of the positioning frame 207. The connecting rod moves linearly up and down in the inner cavity of the installation hole. Furthermore, the movement of the screw sleeve 209 can be limited, so that the screw sleeve 209 can only move linearly up and down.

[0027] In this embodiment, the cross-sectional shape of the positioning frame 207 is L-shaped. A chute is opened at the right end of the upper surface of the bearing plate 205. A slider is fixed on the lower surface of the positioning frame 207. The slider moves horizontally in a straight line in the inner cavity of the chute. Limiting grooves are opened at both the top and bottom of the left inner side wall of the inner cavity of the positioning frame 207. A limiting block is fixed on the left side of the screw sleeve 209. The limiting block moves linearly up and down in the inner cavity of the limiting groove. A connecting rod is fixed on the left side of the arc-shaped clamping plate 210. The left side of the connecting rod is fixed to the screw sleeve 209.

[0028] It can be understood that the positioning mechanism 2 can position bicycle hubs of different sizes, and can adjust the height of the bicycle hub by the mutual cooperation between the rotating rod 202, the rotating gear 203, the toothed plate 204 and the bearing plate 205, without the need to use tools for adjustment. Furthermore, the grinding efficiency of the inner diameter of the bicycle hub is improved.

[0029] Please refer to Figure 4 , in order to grind bicycle hubs with different inner diameters, the grinding mechanism 5 in this embodiment includes a fixed rod 501 arranged on the left side of the output shaft of the driving motor 4. A fixed sleeve 502 is arranged on the outer surface of the fixed rod 501. A grinding roller 503 is fixed on the outer surface of the fixed sleeve 502.

[0030] Wherein, the outer surface of the right end of the fixed rod 501 is provided with an external thread, and a movable plate is threadedly connected to the right end of the fixed rod 501. Annular plates are fixed to both the top and bottom on the left side of the movable plate. Annular grooves adapted to the sizes of the annular plates are formed at both the top and bottom on the right side of the grinding roller 503. By rotating the movable plate to the right, the rotation of the movable plate drives the annular plates to rotate, so that the annular plates move out of the inner cavity of the annular grooves. Then, the grinding roller 503 is pulled to the left, causing the fixed sleeve 502 to move to the left until the grinding roller 503 is pulled out to replace a grinding roller 503 with a suitable size.

[0031] It can be understood that the provided grinding mechanism 5 can disassemble and replace the grinding roller 503, so as to grind bicycle hubs with different inner diameters.

[0032] The working principle of the above embodiment is as follows:

[0033] (1) When grinding the inner diameter of a bicycle hub, first place the bicycle hub on the opposite side of the two arc-shaped clamping plates 210. Then rotate the bidirectional screw rod 208. The rotation of the bidirectional screw rod 208 causes the two screw sleeves 209 threadedly connected to its surface to move relatively. Furthermore, the movement of the screw sleeves 209 drives the arc-shaped clamping plates 210 to move through the connecting rods, so that the relative movement of the two arc-shaped clamping plates 210 can position the bicycle hub. Then rotate the rotating rod 202. The rotation of the rotating rod 202 causes the two rotating gears 203 fixed to its surface to rotate. The rotation of the rotating gears 203 causes the toothed plates 204 meshed with them to move upward. The movement of the two toothed plates 204 can push the bearing plate 205 upward, so as to adjust the height of the bicycle hub until the bicycle hub is adjusted to a suitable height. Then start the electric push rod 206. The piston rod of the electric push rod 206 moves to the right, which can push the positioning frame 207 to the right, so that the bicycle hub is sleeved on the outer surface of the grinding roller 503.

[0034] (2) In order to grind bicycle hubs with different inner diameters, the grinding roller 503 can be replaced. Rotate the movable plate to the right. The rotation of the movable plate drives the annular plates to rotate, so that the annular plates move out of the inner cavity of the annular grooves. Then, the grinding roller 503 is pulled to the left, causing the fixed sleeve 502 to move to the left until the grinding roller 503 is pulled out to replace a grinding roller 503 with a suitable size.

[0035] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0036] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An inner diameter grinding device for bicycle hub production, comprising a workbench (1), characterized in that: At the left end of the upper surface of the workbench (1), there is a positioning mechanism (2) for positioning the bicycle hub. At the right end of the upper surface of the workbench (1), a bearing plate (3) is fixed. On the right side of the bearing plate (3), a driving motor (4) is fixed. The output shaft of the driving motor (4) penetrates through the bearing plate (3) and extends to the left side of the bearing plate (3), and is provided with a grinding mechanism (5) for grinding. A material collection box (6) is placed on the upper surface of the workbench (1) and on the left side of the bearing plate (3). The positioning mechanism (2) includes an installation box (201) fixed at the left end of the upper surface of the workbench (1). Between the opposite sides of the left and right side walls of the inner cavity of the installation box (201), a rotating rod (202) is rotatably connected through bearings. At the left and right ends of the outer surface of the rotating rod (202), rotating gears (203) are fixed. On the back of the rotating gear (203), a toothed plate (204) is meshed and connected. The upper surface of the toothed plate (204) penetrates through and extends to the upper side of the installation box (201), and on the upper surfaces of the two toothed plates (204), the same bearing plate (205) is fixed. At the left end of the upper surface of the bearing plate (205), an electric push rod (206) is fixed. The piston rod of the electric push rod (206) is fixed with a positioning frame (207). Between the opposite sides of the inner top wall and the inner bottom wall of the positioning frame (207), a bidirectional screw rod (208) is rotatably connected through bearings. At the upper and lower ends of the outer surface of the bidirectional screw rod (208), screw sleeves (209) are threadedly connected. On the right side of the positioning frame (207), there are two arc-shaped clamping plates (210).

2. The inner diameter grinding device for manufacturing a bicycle hub according to claim 1, wherein: The left side of the rotating rod (202) penetrates through the installation box (201) and extends to the left side of the installation box (201) and is fixed with a handle. At the left and right ends of the inner bottom wall of the installation box (201), guide rods are fixed. The toothed plate (204) makes a linear up and down movement on the outer surface of the guide rod.

3. The inner diameter grinding device for the production of bicycle hubs according to claim 1, characterized in that: At the left and right ends of the upper surface of the installation box (201), guide holes are opened. The size of the inner cavity of the guide hole is adapted to the size of the toothed plate (204). In the middle between the bearing plate (205) and the opposite side of the inner bottom wall of the installation box (201), a telescopic sleeve rod is fixed.

4. An inner diameter grinding device for bicycle hub production according to claim 1, characterized in that: The cross-sectional shape of the positioning frame (207) is L-shaped. At the right end of the upper surface of the bearing plate (205), a chute is opened. The lower surface of the positioning frame (207) is fixed with a slider, and the slider makes a horizontal linear movement in the inner cavity of the chute.

5. The inner diameter grinding device for bicycle hub production according to claim 1, characterized in that: At the top and bottom of the left side wall of the inner cavity of the positioning frame (207), limit grooves are opened. The left side of the screw sleeve (209) is fixed with a limit block, and the limit block makes a linear up and down movement in the inner cavity of the limit groove. The left side of the arc-shaped clamping plate (210) is fixed with a connecting rod, and the left side of the connecting rod is fixed with the screw sleeve (209).

6. An inner diameter grinding device for the production of a bicycle hub according to claim 1, characterized in that: The grinding mechanism (5) includes a fixed rod (501) arranged on the left side of the output shaft of the driving motor (4). On the outer surface of the fixed rod (501), a fixed sleeve (502) is arranged. On the outer surface of the fixed sleeve (502), a grinding roller (503) is fixed.

7. An inner diameter grinding device for the production of bicycle hubs according to claim 6, characterized in that: The outer surface of the right end of the fixed rod (501) is provided with an external thread, and a movable plate is threadedly connected to the right end of the fixed rod (501). Both the top and bottom of the left side of the movable plate are fixed with annular plates, and annular grooves adapted to the sizes of the annular plates are formed at both the top and bottom of the right side of the grinding roller (503).

Images