Duplex hob cutter

Abstract

The utility model relates to the technical field of duplex hobs, in particular to a duplex hob cutter which comprises a connecting shaft, a fixing ring is fixedly connected to the middle of the outer surface of the connecting shaft, a first through hole is formed in the fixing ring, a cutter body is installed on the outer surface of the connecting shaft, a cutter ring is arranged on the outer circle of the cutter body, and a second through hole is formed in the first through hole. A second through hole is formed in the cutter body, a limiting ring is installed on the outer surface of the connecting shaft and located on the outer side of the cutter body, a limiting column is fixedly connected to the side wall of the limiting ring, and the end, away from the limiting ring, of the limiting column penetrates through the second through hole and extends into the first through hole. The cutter body can be clamped and limited through the limiting ring and the limiting column, the cutter body can be conveniently installed on the connecting shaft, the cutter body can be taken down from the connecting shaft by taking down the limiting ring when maintenance and replacement are needed, the replacement and maintenance speed after the cutter ring is damaged can be increased, and the cutter can be conveniently used.

Description

Technical Field

[0001] This utility model relates to the field of double hobbing cutters, and more particularly to a double hobbing cutter tool. Background Technology

[0002] The cutter body of a double hob is typically a single, integral structure made of high-strength alloy steel. Its shape is designed to accommodate two sets of cutting edges and possess sufficient strength and rigidity to withstand the immense pressure during cutting. The two sets of cutting edges on the cutter body are arranged in a specific layout; they can be arranged side-by-side or staggered at a certain angle.

[0003] Double hobs are used in complex scenarios, such as cutting hard rocks. The cutter ring is easily damaged during use, and after damage, the cutter body, cutter ring, and other parts need to be repaired or replaced so that the cutter can continue to be used. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a double hobbing tool, which aims to provide a double hobbing tool that can quickly repair and replace the tool body and tool ring structure after the tool ring is damaged.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A double hobbing cutter includes a connecting shaft, a fixing ring fixedly connected to the middle of the outer surface of the connecting shaft, a first through hole formed inside the fixing ring, a cutter body mounted on the outer surface of the connecting shaft, a cutter ring provided on the outer ring of the cutter body, a second through hole formed inside the cutter body, a limiting ring mounted on the outer surface of the connecting shaft and located outside the cutter body, a limiting post fixedly connected to the side wall of the limiting ring, and the end of the limiting post away from the limiting ring extending through the second through hole into the interior of the first through hole.

[0007] By adopting the above technical solution, the tool body can be clamped and limited by the limiting ring and the limiting post, which makes it easy to install the tool body on the connecting shaft. When maintenance or replacement is required, the limiting ring can be removed to remove the tool body from the connecting shaft, which can improve the speed of replacement and maintenance after the tool ring is damaged and facilitate the use of the tool.

[0008] As a further improvement to the above technical solution, a third through hole is provided on the surface of the limiting ring, and the center of the third through hole is on the same horizontal line as the center of the first through hole and the center of the second through hole.

[0009] By adopting the above technical solution, the screw can pass through the third through hole, the second through hole, the first through hole, the second through hole, and the third through hole in sequence, connecting the limiting ring, the cutter body, and the fixing ring together.

[0010] As a further improvement to the above technical solution, the number of blades is two, and the two blades are located on the left and right sides of the fixing ring, respectively.

[0011] By adopting the above technical solution, the design of two sets of tool bodies enables the tool to perform two cutting actions on the workpiece at the same time, thereby improving cutting efficiency.

[0012] As a further improvement to the above technical solution, the number of limiting rings is two, and the two limiting rings are respectively located on the outer sides of the two blade bodies.

[0013] By adopting the above technical solution, the two limiting rings can clamp the two blades from both sides, which facilitates clamping and fixing the blades.

[0014] As a further improvement to the above technical solution, a screw is installed inside the third through hole, and nuts are threaded to both ends of the screw.

[0015] By adopting the above technical solution, the tool body can be clamped and fixed by passing the screw through the third through hole, the second through hole, the first through hole, the second through hole, and the third through hole in sequence.

[0016] As a further improvement to the above technical solution, the outer surface of the connecting shaft is provided with an end cap, and there are two end caps. The two end caps are respectively located outside the two limiting rings, and the inner surface of the end cap is threadedly connected to the outer surface of the limiting ring.

[0017] By adopting the above technical solution, the end cap can be used to wrap and protect the limiting ring, screw, and nut.

[0018] As a further improvement to the above technical solution, the blade ring is provided with multiple cutting grooves, which are circumferentially distributed on the blade ring.

[0019] By adopting the above technical solution, the cutting effect of the blade ring can be increased through multiple cutting grooves, making the use of the blade easier.

[0020] This utility model has the following beneficial effects:

[0021] Compared with existing technologies, this double hobbing cutter can clamp and limit the cutter body through the limiting ring and limiting post, which makes it easier to install the cutter body on the connecting shaft. When maintenance or replacement is required, the limiting ring can be removed to remove the cutter body from the connecting shaft, which can improve the speed of replacement and maintenance after the cutter ring is damaged and facilitate the use of the cutter.

[0022] Compared with existing technologies, this double hobbing cutter can protect the limiting ring, screw, and nut by wrapping them with end caps, preventing external debris such as gravel from affecting the limiting ring, screw, and other structures, thus facilitating long-term use of the cutter. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of a double hobbing cutter proposed in this utility model;

[0025] Figure 2 This is a front view of the overall structure of a double hobbing cutter proposed in this utility model;

[0026] Figure 3 This is a cross-sectional view of the internal structure of a double hobbing cutter proposed in this utility model;

[0027] Figure 4 This utility model proposes a double hobbing cutter. Figure 3 Enlarged view of the structure at point A in the middle;

[0028] Figure 5 This utility model proposes a double hobbing cutter. Figure 3 Enlarged view of the structure at point B in the middle;

[0029] Figure 6 This is an exploded view of a double hobbing cutter proposed in this utility model.

[0030] Legend:

[0031] 1. Connecting shaft; 2. Retaining ring; 3. First through hole; 4. Cutter body; 5. Cutter ring; 6. Second through hole; 7. Limiting ring; 8. Limiting post; 9. Third through hole; 10. Screw; 11. Nut; 12. End cap. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0034] Reference Figures 1 to 6 This utility model provides a double-section hobbing cutter: It includes a connecting shaft 1, a fixing ring 2 fixedly connected to the middle of the outer surface of the connecting shaft 1, a first through hole 3 inside the fixing ring 2, a cutter body 4 mounted on the outer surface of the connecting shaft 1, and a cutter ring 5 arranged on the outer ring of the cutter body 4. Rotation of the connecting shaft 1 drives the cutter ring 5 to rotate, thereby cutting the object. A second through hole 6 is provided inside the cutter body 4. A limiting ring 7 is mounted on the outer surface of the connecting shaft 1, and the limiting ring 7 is located outside the cutter body 4. A limiting post 8 is fixedly connected to the side wall of the limiting ring 7 to limit the movement of the cutter body. The end of the post 8 away from the limiting ring 7 extends through the second through hole 6 into the interior of the first through hole 3. The limiting post 8 can protect the second through hole 6 inside the cutter body 4, and also prevent the shear stress generated when the cutter body 4 rotates from affecting the screw 10. The limiting ring 7 and the limiting post 8 can clamp and limit the cutter body 4, making it easy for the cutter body 4 to be installed on the connecting shaft 1. When maintenance or replacement is required, the limiting ring 7 can be removed, and the cutter body 4 can be removed from the connecting shaft 1. This can improve the speed of replacement and maintenance after the cutter ring 4 is damaged, and facilitate the use of the cutter.

[0035] The surface of the limiting ring 7 is provided with a third through hole 9. The center of the third through hole 9 is on the same horizontal line as the center of the first through hole 3 and the center of the second through hole 6. A screw 10 is installed inside the third through hole 9. Nuts 11 are threaded to both ends of the screw 10, so that the screw 10 can pass through the third through hole 9, the second through hole 6, the first through hole 3, the second through hole 6, and the third through hole 9 in sequence, connecting the limiting ring 7, the blade body 4, and the fixing ring 2 together, and clamping and fixing the blade body 4.

[0036] There are two cutter bodies 4, which are located on the left and right sides of the fixing ring 2 respectively. The design of the two sets of cutter bodies 4 allows the cutter to perform two cutting actions on the workpiece at the same time, which improves the cutting efficiency. There are two limiting rings 7, which are located on the outside of the two cutter bodies 4 respectively. The two limiting rings 7 can clamp the two cutter bodies 4 from both sides, which facilitates the clamping and fixing of the cutter bodies 4.

[0037] The outer surface of the connecting shaft 1 is provided with an end cap 12. There are two end caps 12, which are located on the outside of the two limiting rings 7 respectively. The inner surface of the end cap 12 is threaded to the outer surface of the limiting ring 7. The end cap 12 is installed on the surface of the shaft limiting ring 7 for easy disassembly. The end cap 12 can wrap and protect the limiting ring 7, screw 10 and nut 11.

[0038] The cutter ring 5 is provided with multiple cutting grooves, which are distributed circumferentially on the cutter ring 5. The multiple cutting grooves can increase the cutting effect of the cutter ring 5 and facilitate the use of the cutter.

[0039] Working principle: When in use, the limiting ring 7 and the limiting post 8 can clamp and limit the tool body 4, making it easy for the tool body 4 to be installed on the connecting shaft 1. When maintenance or replacement is required, the limiting ring 7 can be removed, and the tool body 4 can be removed from the connecting shaft 1. This can improve the speed of replacement and maintenance after the tool ring 5 is damaged, and facilitate the use of the tool.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double hobbing cutter, comprising a connecting shaft (1), characterized in that: A fixing ring (2) is fixedly connected to the middle of the outer surface of the connecting shaft (1). A first through hole (3) is opened inside the fixing ring (2). A blade body (4) is installed on the outer surface of the connecting shaft (1). A blade ring (5) is provided on the outer ring of the blade body (4). A second through hole (6) is opened inside the blade body (4). A limiting ring (7) is installed on the outer surface of the connecting shaft (1). The limiting ring (7) is located outside the blade body (4). A limiting post (8) is fixedly connected to the side wall of the limiting ring (7). One end of the limiting post (8) away from the limiting ring (7) extends through the second through hole (6) into the interior of the first through hole (3).

2. The double hobbing cutter according to claim 1, characterized in that: The surface of the limiting ring (7) is provided with a third through hole (9), and the center of the third through hole (9) is on the same horizontal line as the center of the first through hole (3) and the center of the second through hole (6).

3. A double hobbing cutter according to claim 2, characterized in that: There are two blades (4), and the two blades (4) are located on the left and right sides of the fixing ring (2) respectively.

4. A double hobbing cutter according to claim 3, characterized in that: The number of the limiting rings (7) is two, and the two limiting rings (7) are located on the outside of the two blade bodies (4).

5. A double hobbing cutter according to claim 4, characterized in that: A screw (10) is installed inside the third through hole (9), and nuts (11) are threaded to both ends of the screw (10).

6. A double hobbing cutter according to claim 5, characterized in that: The outer surface of the connecting shaft (1) is provided with an end cap (12). There are two end caps (12). The two end caps (12) are located on the outside of the two limiting rings (7). The inner surface of the end cap (12) is threadedly connected to the outer surface of the limiting ring (7).

7. A double hobbing cutter according to claim 6, characterized in that: The blade ring (5) is provided with a cutting groove, and there are multiple cutting grooves, which are circumferentially distributed on the blade ring (5).

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