Abrasion-resistant multipurpose milling tooth

Abstract

The utility model provides a wear-resistant multipurpose milling tooth, and belongs to the technical field of milling teeth. Comprising a tool nose with the top of a short conical structure, a tool apron which is integrally formed and of a circular-truncated-cone-shaped structure is arranged at the bottom of the tool nose, and a welding protrusion is arranged at the bottom of the tool apron; the cutter body is of a circular truncated cone structure, and a groove matched with the bottom of the cutter holder is formed in the top of the cutter body; the cutter bar is sleeved with a matched clamping spring, and the outer side of the clamping spring is sleeved with a matched check ring. Welding air holes can be effectively reduced and impact stress can be dispersed through the welding protrusions, bending strength is improved through the design of the tool apron of the circular truncated cone structure, the tool nose of the short cone structure and the thickened short head, the alloy crushing rate is reduced, the milling cutter is more suitable for milling under severe working conditions, the tool nose is effectively prevented from being crushed and fractured, and the service life of the milling cutter is prolonged. The cutter head which is made of the tungsten carbide alloy and coated with the polycrystalline diamond coating on the surface has both impact resistance and wear resistance, so that the service life is prolonged.

Description

Technical Field

[0001] This utility model provides a wear-resistant, multi-purpose milling tooth, belonging to the field of milling tooth technology. Background Technology

[0002] Milling teeth, also known as milling machine cutter heads or road milling teeth, are the core cutting components of road milling machines. They are mainly available in two specifications based on the bottom diameter of the cutter head: Φ20mm and Φ22mm, suitable for mainstream milling machine models both domestically and internationally. Their structure consists of an alloy cutter head, cutter body, retaining ring, and retaining ring.

[0003] Existing widely used milling teeth can basically meet normal usage needs and are suitable for milling asphalt and cement pavements on highways. However, they still have certain drawbacks: the cutter head is prone to breakage, stress concentration occurs at the weld between the cutter head and the cutter body, and the cutter head is mostly designed to be slender and prone to breakage under impact. Furthermore, their service life is short under harsh milling conditions. Therefore, this invention provides a wear-resistant, multi-purpose milling tooth. Utility Model Content

[0004] The technical problem solved by this utility model is that stress is concentrated at the weld between the cutter head and the cutter body, and the cutter head is mostly designed to be slender and long, which makes it easy to break and fracture under impact, resulting in a short service life under harsh milling conditions.

[0005] To solve the technical problem, the technical solution provided by this utility model is as follows: a wear-resistant multi-purpose milling tooth, including a cutter head, a cutter body fixedly disposed at the bottom of the cutter head, and a cutter shank fixedly disposed at the bottom of the cutter body. The cutter head includes a cutter tip with a short conical structure at the top, and a cutter holder integrally formed with a frustum-shaped structure at the bottom of the cutter tip. The bottom of the cutter holder has a welding protrusion. The cutter body has a frustum-shaped structure, and the top of the cutter body has a groove that matches the bottom of the cutter holder. A matching retaining spring is fitted on the cutter shank, and a matching retaining ring is fitted on the outside of the retaining spring.

[0006] Furthermore, the tool holder and the sidewalls of the tool body, which are truncated cone-shaped, both have an inwardly concave arc transition structure.

[0007] Furthermore, the height of the cutting head is 15-19mm, the bottom diameter of the cutting head is 16-22mm, and the top diameter of the cutting head is 10-14mm.

[0008] Furthermore, the height of the blade is 35-40mm, the bottom diameter of the blade is 46-52mm, and the top diameter of the blade is 22-26mm.

[0009] Furthermore, the bottom of the tool holder is fixed in the groove by welding.

[0010] Furthermore, the cutting head is made of tungsten carbide alloy material, and the surface of the cutting head is coated with a polycrystalline diamond coating.

[0011] The beneficial effects of this utility model are:

[0012] The weld protrusion between the cutter head and the cutter body effectively reduces weld porosity and disperses impact stress. The frustum-shaped cutter head and the short conical cutter tip, along with the thickened and short-head design, improve bending strength and reduce alloy chipping rate, making it more suitable for milling in harsh working conditions. It effectively prevents the cutter tip from chipping and breaking. The cutter head, made of tungsten carbide alloy and coated with polycrystalline diamond, combines impact resistance and wear resistance, extending its service life and making it more wear-resistant. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a wear-resistant multi-purpose milling tooth according to the present invention.

[0014] Figure 2 This is a schematic diagram of the cutter head of a wear-resistant multi-purpose milling tooth according to the present invention.

[0015] Figure 3 This is a schematic diagram of the cutter body of a wear-resistant multi-purpose milling tooth according to the present invention.

[0016] Figure 4 This is a planar schematic diagram of the retaining ring of a wear-resistant multi-purpose milling tooth according to the present invention.

[0017] Figure 5 This is a schematic diagram of a snap ring for a wear-resistant, multi-purpose milling tooth according to the present invention.

[0018] 1. Blade head; 2. Blade body; 3. Blade shank; 4. Blade tip; 5. Blade holder; 6. Groove; 7. Snap ring; 8. Retaining ring; 9. Welding protrusion. Detailed Implementation

[0019] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.

[0020] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0021] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] According to the appendix Figure 1 , 2 As shown: This utility model provides a wear-resistant multi-purpose milling tooth: including a cutter head 1, a cutter body 2 fixedly disposed at the bottom of the cutter head 1, and a cutter shank 3 fixedly disposed at the bottom of the cutter body 2. The cutter head 1 includes a cutter tip 4 with a short conical structure at the top, and a cutter holder 5 integrally formed with a frustum-shaped structure at the bottom of the cutter tip 4. The cutter holder 5 has a welding protrusion 9 at the bottom. The height of the cutter head 1 is 15-19mm, the bottom diameter of the cutter holder 5 is 16-22mm, and the top diameter of the cutter holder 5 is 10-14mm. The cutter head 1 is made of tungsten carbide alloy material, and the surface of the cutter head 1 is coated with a polycrystalline diamond coating. Specifically, the frustum-shaped cutter holder 5 and the short conical cutter tip 4 effectively prevent the cutter tip 4 from breaking. The cutter head 1, which is made of tungsten carbide alloy and coated with a polycrystalline diamond coating, takes into account both impact resistance and wear resistance.

[0023] As per the instruction manual Figure 1 , 3 As shown: the blade 2 has a frustum-shaped structure. The blade holder 5 and the side walls of the blade 2 both have an inwardly concave arc transition structure. The height of the blade 2 is 35-40mm, the bottom diameter of the blade 2 is 46-52mm, and the top diameter of the blade 2 is 22-26mm. The top of the blade 2 has a groove 6 that matches the bottom of the blade holder 5. The bottom of the blade holder 5 is fixed in the groove 6 by welding. The welding protrusion 9 can effectively reduce welding porosity and disperse impact stress.

[0024] As per the instruction manual Figure 1 , 4 As shown in Figure 5: A matching retaining ring 7 is fitted on the tool holder 3, and a matching retaining ring 8 is fitted on the outside of the retaining ring 7. Specifically, the retaining ring 7 and the retaining ring 8 both adopt existing known mature structures. The retaining ring 8 can be made of hard elastic 65Mo material with a diameter of 44mm, which avoids direct wear of the tool holder 5 by the cutter head 1 during milling work and effectively protects the service life of the tool holder 5.

[0025] The principle of this utility model

[0026] During use, the bottom of the tool holder 5 is fixed in the groove 6 by welding. The welding protrusion 9 can effectively reduce welding porosity and disperse impact stress. The tool holder 5 has a frustum structure and the tool tip 4 has a short conical structure. The thickened and short head design increases the bending strength by 40% and reduces the alloy breakage rate by 90%, making it more suitable for milling under harsh working conditions. It effectively prevents the tool tip 4 from breaking. The tool head 1 is made of tungsten carbide alloy and coated with polycrystalline diamond coating. It takes into account both impact resistance and wear resistance, extending the service life to 2-3 times that of traditional products. It is more wear-resistant and suitable for milling asphalt and cement pavement of highways.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A wear-resistant multipurpose milling and planing tooth, characterized by: The device includes a cutting head (1), a blade body (2) fixedly disposed at the bottom of the cutting head (1), and a blade shank (3) fixedly disposed at the bottom of the blade body (2). The cutting head (1) includes a cutting tip (4) with a short conical structure at the top, and a blade holder (5) integrally formed and with a frustum structure at the bottom of the cutting tip (4). The bottom of the blade holder (5) is provided with a welding protrusion (9). The blade body (2) has a frustum structure, and the top of the blade body (2) has a groove (6) that matches the bottom of the blade holder (5). The blade shank (3) is fitted with a matching retaining ring (7), and a matching retaining ring (8) is fitted on the outside of the retaining ring (7).

2. A wear resistant multipurpose milling teeth as claimed in claim 1, wherein: The side walls of the tool holder (5) and the tool body (2), which are truncated cone-shaped, are both concave arc transition structures.

3. A wear resistant multipurpose milling teeth as claimed in claim 1 wherein: The height of the cutter head (1) is 15-19mm, the bottom diameter of the cutter holder (5) is 16-22mm, and the top diameter of the cutter holder (5) is 10-14mm.

4. A wear resistant multipurpose milling teeth as claimed in claim 1, wherein: The height of the blade (2) is 35-40mm, the bottom diameter of the blade (2) is 46-52mm, and the top diameter of the blade (2) is 22-26mm.

5. A wear resistant multipurpose milling teeth as claimed in claim 1 wherein: The bottom of the tool holder (5) is fixed in the groove (6) by welding.

6. A wear resistant multipurpose milling teeth as claimed in claim 1 wherein: The cutting head (1) is made of tungsten carbide alloy material, and the surface of the cutting head (1) is coated with polycrystalline diamond coating.

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