CN217997757U

CN217997757U - Conical hard alloy tool bit

Info

Publication number: CN217997757U
Application number: CN202221328331.4U
Authority: CN
Inventors: 苗祥; 秦鹏程
Original assignee: Jiangsu Wuyuan Machinery Manufacturing Co ltd
Current assignee: Jiangsu Wuyuan Machinery Manufacturing Co ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-12-09
Anticipated expiration: 2032-05-31

Abstract

The utility model relates to a conical hard alloy tool bit, which comprises a main body, wherein the main body is provided with a tool tip, a tool body and a tool handle which are sequentially arranged from top to bottom, a clamp spring and a gasket are arranged on the tool handle, the tool tip comprises a tip part, a transition part and a base part, the upper surfaces of the tip part, the transition part and the base part form a continuous and smooth umbrella-shaped cutting surface, the surface of the transition part is a cutting surface, and the cutting surface is a semi-conical surface with a cone angle of 70-100 degrees; the top of the cutter body is provided with an installation groove, and the lower part of the base part is welded and fixed in the installation groove; the utility model discloses an optimize the structure, the structure is more simple, and the penetrability of tool bit improves, and cutting resistance reduces, can make the operation machine keep higher production efficiency, long service life under high walking speed, high impact condition.

Description

Conical hard alloy tool bit

Technical Field

The utility model belongs to the technical field of engineering machine tool, mainly relate to a conical carbide tool bit.

Background

The milling machine head is one of the important accessories of a road milling machine, and is also the most vulnerable part, and is often called as a road milling tooth or a highway milling tooth, the milling machine performs road cutting or milling operation by using the contact between the milling machine head and the ground, the superiority of the milling machine head generally depends on the material of the milling machine head, the better the material of the milling machine head body is, the more wear-resistant the milling machine head is, the longer the service life of the milling machine head is, the better the welding mode and the proper heat treatment are, and the important factors for ensuring the quality of the milling machine head are also included.

The cutter body alloy is made of a superhard alloy material, such as carbide, the alloy is more wear-resistant and can bear strong impact force, the alloy is conical, the unique design of the cutter body alloy is suitable for grinding of concrete pavements, the carbide on the alloy is distributed, the operation form of the cutter body alloy is optimized, the material utilization rate of the cutter body alloy is improved, the service performance is further optimized, the penetrating capacity is improved, the cutting resistance is reduced, the cutter body alloy is very suitable for being used under the conditions of hardness and high impact, and the high walking speed and the high production efficiency of a machine are ensured.

The upper part and the lower part of a tool shank of the milling machine tool bit have different mechanical properties, the upper half part needs to generate friction with a road surface and milling waste materials, so that high hardness is needed, and the lower half part of the tool shank is inserted into a tool apron and needs to absorb impact in the milling process, so that the toughness is good. Thus the handle needs to have dual properties: wear-resisting and anti fracture. The middle part is provided with a tool withdrawal groove, and the tool bit can be pulled out of the tool holder by a detacher.

SUMMERY OF THE UTILITY MODEL

For overcoming the not enough of prior art, the utility model aims at providing a road engineering cutter aims at realizing simple structure, work efficiency is high, to different road surface cutting material repeatedly usable, the working costs is low.

In order to achieve the above object, the utility model discloses a following technical scheme realizes:

a conical hard alloy cutter head comprises a main body, wherein the main body is provided with a cutter tip, a cutter body and a cutter handle which are sequentially arranged from top to bottom, a clamp spring and a gasket are arranged on the cutter handle, the cutter tip comprises a tip part, a transition part and a base part, the upper surfaces of the tip part, the transition part and the base part form a continuous and smooth umbrella-shaped cutting surface, the surface of the transition part is a cutting surface, and the cutting surface is a semi-conical surface with a cone angle of 70-100 degrees; the top of the cutter body is provided with a mounting groove, and the lower part of the base part is welded and fixed in the mounting groove.

Preferably, the bottom of the tool nose is provided with a chamfer, and the edge of the bottom of the mounting groove is provided with an inclined plane matched with the chamfer of the bottom of the tool nose.

Preferably, the upper part of the cutter body is a cylinder with the diameter of 10-15mm, the lower part of the cutter body is a semi-conical tool receiving base, and the diameter of the bottom of the semi-conical tool receiving base is 35-40mm.

Preferably, the outer diameters of the cutting edge and each part of the cutter body are gradually enlarged from top to bottom.

Preferably, the upper end edge of the cutter body is provided with a chamfer with the same inclination angle as the cutting surface or within +/-5 degrees.

The utility model discloses an optimize the structure, the structure is more simple, and the penetrability of tool bit improves, and cutting resistance reduces, can make the operation machine keep higher production efficiency, long service life under high walking speed, high impact condition.

Drawings

Fig. 1 is an overall front view of the present invention.

Fig. 2 is a partial cross-sectional front view of the present invention.

Fig. 3 is a schematic view of the structure of the knife tip of the present invention.

Fig. 4 is a schematic view of the working state of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

As shown in fig. 1-4, a conical hard alloy tool bit comprises a main body 1, wherein the main body 1 is provided with a tool tip 5, a tool body 2 and a tool shank 3 which are sequentially arranged from top to bottom, a clamp spring 3.1 and a gasket 4 are arranged on the tool shank 3, the tool tip 5 comprises a tip part, a transition part and a base part, the upper surfaces of the tip part, the transition part and the base part form a continuous and smooth umbrella-shaped cutting surface, the surface of the transition part is a cutting surface 5.1, and the cutting surface 5.1 is a semi-conical surface with a cone angle of 70-100 degrees; the top of the cutter body 2 is provided with a mounting groove, and the lower part of the base part is welded and fixed in the mounting groove.

A chamfer is processed at the bottom of the tool nose 5, and an inclined plane matched with the chamfer at the bottom of the tool nose 5 is processed at the edge of the bottom of the mounting groove.

The upper part of the cutter body 2 is a cylinder with the diameter of 10-15mm, the lower part of the cutter body is a semi-conical tool receiving base 7, and the diameter of the bottom of the semi-conical tool receiving base 7 is 35-40mm.

The outer diameters of the cutting edge 5 and each part of the cutter body 2 are gradually enlarged from top to bottom.

The edge of the upper end of the cutter body 2 is provided with a chamfer with the same inclination angle as the cutting surface 5.1 or within +/-5 degrees of the inclination angle, the cutter point 5 digs obliquely during road surface operation, and the arrangement is favorable for matching the abrasion degree of the upper end of the cutter body 2 and the cutting surface 5.1.

In the embodiment, the tool nose 5 adopts an umbrella-shaped cutting surface, the opposite shape of the tip can reduce the resistance of road surface cutting and is beneficial to the working rotation of the tool, and the outer surface 5.1 of the tool nose 5 preferentially participates in the road surface cutting, so that the diameter a1 of the tool nose is larger, the tool nose can bear larger cutting power and cutting stress, and is more wear-resistant, and the service life is longer.

The tool nose 5 is embedded in a tool receiving base 7 of the tool body 3 in a clearance fit mode, 3 outer surfaces 5.5, 5.6 and 5.7 of the tool nose 5 are matched with three supporting surfaces 5.8, 5.9 and 5.10 of the tool receiving base 7 respectively, a cutting surface 5.1 of the tool nose is arranged in a region exceeding an external working surface 9 of the tool body 3, and the tool nose 5 and the tool body 3 are fixedly connected by adopting a hard welding process.

Fig. 2 depicts that the tool receiving seat 7 of the tool body 3 comprises a first to a third support surface 5.8, 5.9, 5.10, wherein the depth D from the outer working surface 9 to the support surface 5.10 of the tool body 3, and the three support surfaces of the tool receiving seat 7 form a cylindrical recess around the centre axis M, which cylindrical recess may be made to concentrically fit the tip 5, which may save a lot of material of the tool body, which may contribute to a reduction of material costs.

Fig. 3 shows a tip 5, formed about its central axis M, comprising a cutting face 5.1, first to third outer surfaces 5.5, 5.6, 5.7, the cutting face 5.1 of the tip 5 having an included angle H, which is in the range of 70 ° -100 °. The tip has a length C. The outer surface 5.6 is a chamfered surface which can better fit with the support surface 5.9 of the tool receiving base 7 of the cutter body 3, so that the cutter tip 5 can be ensured to be firmly welded in the tool receiving base 7 of the cutter body even if the cutter is impacted during operation. The tip 5 is made of a super-hard alloy material, such as carbide. The carbide on the tool nose 5 is redistributed, the operation form of the tool nose is optimized, the material utilization rate of the tool nose is improved, the service performance is further optimized, the penetrating power is improved, the cutting resistance is reduced, the tool nose is very suitable for being used under the conditions of hardness and high impact, and the high walking speed and the high production efficiency of the machine are ensured. In the actual construction process, the cutter body 3 is embedded in the material to be cut on the road surface, so that continuous friction with the cut material and continuous abrasion are generated, and the cutter body 3 is manufactured into a form that the diameter is gradually enlarged from the head part to the tail part, so that the cutting resistance in the working process is favorably reduced.

Fig. 4 details that in the actual ground cutting operation, the cutting surface 5.1 of the nose 5 of the tool 1 directly contacts with the ground S to be cut and all cuts into the ground S to a certain depth, and during the continuous contact with the ground S, the tool 1 freely rotates around the central axis M due to the effect of the friction force F, so that the nose 5 of the tool 1 can be uniformly worn around the central axis M, which is beneficial to prolonging the service life of the tool 1, and the noses with consistent wear degree also make the depth of the bottom surface S grains formed by cutting identical and consistent intervals, which is beneficial to the subsequent construction process, so that the final newly laid road surface is smoother.

The embodiments of the invention have been disclosed above, but it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields suitable for the invention, and further modifications can be easily made by those skilled in the art, so that the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and the scope of equivalents.

Claims

1. A conical hard alloy tool bit comprises a main body (1), wherein the main body (1) is provided with a tool nose (5), a tool body (2) and a tool handle (3) which are sequentially arranged from top to bottom, and a clamp spring (3.1) and a gasket (4) are arranged on the tool handle (3), and the conical hard alloy tool bit is characterized in that the tool nose (5) comprises a tip part, a transition part and a base part, wherein continuous and smooth umbrella-shaped cutting surfaces are formed on the tip part, the transition part and the upper surface of the base part, the surface of the transition part is a cutting surface (5.1), and the cutting surface (5.1) is a semi-conical surface with a cone angle of 70-100 degrees; the top of the cutter body (2) is provided with a mounting groove, and the lower part of the base part is welded and fixed in the mounting groove.

2. The conical cemented carbide tip according to claim 1, characterized in that the bottom of the tip (5) is chamfered and the edge of the bottom of the mounting groove is chamfered to match the chamfer of the bottom of the tip (5).

3. The conical cemented carbide insert according to claim 1, characterized in that the upper part of the body (2) is a cylinder with a diameter of 10-15mm and the lower part is a semi-conical tool receiving seat (7), the bottom of the semi-conical tool receiving seat (7) having a diameter of 35-40mm.

4. The conical cemented carbide insert according to claim 3, characterized in that the outer diameters of the cutting edge (5) and each part of the tool body (2) are gradually enlarged from top to bottom.

5. The conical cemented carbide insert according to claim 4, characterized in that the upper end edge of the body (2) is chamfered with an angle of inclination equal to or within ± 5 ° of the cutting face (5.1).