CN211162193U

CN211162193U - Composite tungsten steel finishing reamer

Info

Publication number: CN211162193U
Application number: CN201922164208.8U
Authority: CN
Inventors: 朱均; 刘影; 刘梨华
Original assignee: Changzhou Yege Tools Co ltd
Current assignee: Changzhou Yege Tools Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-08-04
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses a compound tungsten steel finish reamer, including work portion and installation department, the installation department is cylindrical, with work portion fixed connection, the work portion is five working sections, five working sections are the cylinder, and its diameter increases in proper order from keeping away from the installation department to being close to the installation department, first working section front end is the cone, and the other end is the cylinder, and second working section links to each other with first working section, and it is α to connect the face slope, and the second working section other end is connected with the third working section, and it is β to connect the face slope, and the third working section other end is connected with the fourth working section, and it is gamma to connect the face slope, and the fourth working section other end links to each other with the fifth working section, and its junction is formed by two sections inclined planes of different angles link to each other, and first section inclined plane angle does, second section inclined plane angle does, the fourth working section with be equipped with round chamfer between the first section inclined plane, be connected by an arc surface between first section inclined plane and the second.

Description

Composite tungsten steel finishing reamer

Technical Field

The utility model belongs to the technical field of the cutter for machining, especially, relate to a compound tungsten steel finish reamer.

Background

The reamer has one or more teeth for cutting a rotating tool for machining a thin metal layer on the surface of the hole. The hole after reamer machining can obtain accurate size and shape. The reamer is used for reaming drilled (or reamed) holes on a workpiece, mainly for improving the machining precision of the holes and reducing the roughness of the surfaces of the holes, is a tool for finish machining and semi-finish machining of the holes, and generally has small machining allowance. The machining of car valve piece, it is generally very high to the machining precision requirement, so need the reamer can one shot forming, and have good precision, among the prior art, there is the reamer machining precision low, the problem that life is low, its reason is generally by reamer material is improper, the reamer burns when the sharpening, the cutting fluid is selected improperly, the cutting fluid can not add the mode such as causing with reasonable mode, these problems can influence production efficiency, reduce the machining precision, make the product defective rate rise, cause very big economic loss.

SUMMERY OF THE UTILITY MODEL

The composite tungsten steel reamer comprises a working portion and an installation portion, wherein the installation portion is cylindrical and is fixedly connected with the working portion, the working portion comprises five working sections, the diameters of the five working sections are sequentially increased from the position far away from the installation portion to the position close to the installation portion, the front end of the first working section is a cone, the other end of the first working section is a cylinder, a circular truncated cone-shaped slope is arranged between the cone and the cylinder and is connected with the cylinder, a round chamfer is arranged at the joint of the circular truncated cone-shaped slope and the cylinder, the second working section is connected with the first working section, the joint of the second working section is an inclined plane with the gradient of α, the other end of the second working section is connected with the third working section, the joint of the second working section and the third working section is an inclined plane with the gradient of gamma, the other end of the fourth working section is connected with the fifth working section, the joint of the fourth working section is an inclined plane with the angle of β, the first working section is connected with the second working section, the fourth working section is an inclined plane, the diameter of the second working section is equal to the installation portion, and the diameter of the first working section is equal to the second working section.

Furthermore, the α range is 10 degrees to α degrees to 15 degrees, the β range is 40 degrees to β degrees to 50 degrees, the gamma range is 10 degrees to gamma 15 degrees, the gamma range is 20 degrees to 30 degrees, and the gamma range is 60 degrees to 70 degrees.

Furthermore, the working part and the mounting part are integrally formed, and a spiral cutting fluid through hole is formed in the cutter body and used for conveying the cutting fluid to the front end working part.

Preferably, the outer surface of the working part is provided with a chip groove which is spirally arranged around the length direction of the working part.

Preferably, the outer surface of the cutter body is made of tungsten steel alloy and is treated by a coating.

The utility model discloses a beneficial achievement lies in: the utility model discloses compound tungsten steel finish reamer is integrated into one piece, and the surface uses tungsten steel alloy coating to handle, has high rigidity and high wear resistance to solve the difficult processing problem of customer when processing car valve block, improved the product surface precision and the quality after the processing, one shot forming has promoted machining efficiency, thereby the protruding advantage that shows the shaping cutter can bring bigger economic efficiency. On the problem of how to add the cutting fluid, this product has chooseed the optimum scheme for use, utilizes the inside through-hole of cutter body to carry the cutting fluid promptly, makes the cutting fluid can be accurate reach the cutting position, cools off and washs it, has avoided the cutting edge to burn, condition emergence such as collapse to the life of cutter has effectively been improved.

Drawings

FIG. 1 is a schematic view of the composite tungsten steel precision reamer;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of the portion B of FIG. 1;

FIG. 4 is an enlarged view of section C of FIG. 1;

fig. 5 is an enlarged schematic view of a portion D of fig. 1.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

as shown in fig. 1, the composite tungsten steel reamer comprises a working portion 111 and an installation portion 222, wherein the installation portion 222 is cylindrical and is fixedly connected with the working portion 111, the working portion 111 is divided into five working sections, the five working sections are cylinders, the diameters of the five working sections are sequentially increased from the position far away from the installation portion 222 to the position close to the installation portion 222, the front end of the first working section 1 is a cone 11, the other end of the first working section is a cylinder, a circular truncated cone-shaped slope 12 is arranged between the cone and the cylinder to connect the cone and the cylinder, and a circular chamfer is arranged at the connection position of the circular truncated cone-shaped slope 12 and the cylinder; the second working section 2 is connected with the first working section 1, and the connection position is an inclined surface A (shown in figure 2) with the gradient of 10 degrees; the other end of the second working section 2 is connected with the third working section 3, the joint of the second working section 2 and the third working section is an inclined plane B (shown in figure 3) with the gradient of 40 degrees, and round chamfers are arranged at the joints of the inclined plane and the second and third sections; the other end of the third working section 3 is connected with the fourth working section 4, and the connection position is an inclined plane C (shown in figure 4) with the gradient of 10 degrees; the other end of the fourth working section 4 is connected with the fifth working section 5, the joint of the fourth working section 4 is a D part (shown in figure 5), the D part is formed by connecting two sections of inclined planes with different angles, the angle of the first section of inclined plane is 20 degrees, the angle of the second section of inclined plane is 60 degrees, a round chamfer is arranged between the fourth working section 4 and the first section of inclined plane, and the first section of inclined plane is connected with the second section of inclined plane through a circular arc surface; the diameter of the fifth working section 5 is equal to the diameter of the mounting portion 222.

The working portion 111 and the mounting portion 222 are integrally formed, and a spiral cutting fluid passage 6 is formed in the cutter body to convey the cutting fluid to the front working portion 111. The outer surface of the working part 111 is provided with a chip groove 7 which is spirally arranged around the length direction of the working part 111.

The utility model discloses finish reamer uses compound tungsten steel to carry out coating to cutter body surface and handles, very high hardness and wearability have, add man-hour to the stainless steel valve block, need earlier carry out drilling preliminary treatment to the valve block, after drilling, use compound tungsten steel finish reamer to carry out further reaming to the aperture, earlier stretch into the aperture with cone 11 during reaming, guide finish reamer slowly gos deep into, above-mentioned A, B, C, D portion contacts the valve body in proper order and carries out the reaming to the valve body, cutter body integrated into one piece can once only accomplish the reaming to the valve body. Meanwhile, the spiral cutting fluid through hole 6 in the cutter body conveys proper cutting fluid to the working part 111, the working part 111 is cooled and washed, the cutting edge is not burnt and abraded, and in the process that the cutter body is deeply reamed, the chip grooves enable metal fragments and used cutting fluid to be brought out of the hole through the rotation of the cutter body until the whole reaming process is completed.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The above description is only a preferred collective embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes and substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A composite tungsten steel finishing reamer is characterized by comprising a working portion and an installation portion, wherein the installation portion is cylindrical and fixedly connected with the working portion, the working portion comprises five working sections, the five working sections are cylinders, the diameters of the five working sections are sequentially increased from a position far away from the installation portion to a position close to the installation portion, the front end of the first working section is a cone, the other end of the first working section is a cylinder, a circular truncated cone-shaped slope surface is arranged between the cone and the cylinder to connect the cone and the cylinder, a round chamfer is arranged at the joint of the circular truncated cone-shaped slope surface and the cylinder, the second working section is connected with the first working section, the joint of the second working section is an inclined surface with a slope of α, the other end of the second working section is connected with the third working section, the joint of the second working section is an inclined surface with a slope of β, round chamfers are arranged at the joints of the second working section and the third working section, the other end of the third working section is connected with the fourth working section, the joint is an inclined surface with a gamma inclined surface, the other end of the fourth working section is connected with the fifth working section, the inclined surface is formed by connecting portions of two inclined surfaces with different angles, the first working section, the inclined surface, the second working section is arranged between the inclined surface.

2. The composite tungsten steel reamer as claimed in claim 1, wherein α is in the range of 10 ° - α ° -15 °, β is in the range of 40 ° - β ° -50 °, γ is in the range of 10 ° - γ -15 °, 20 ° -30 °, 60 ° -70 °.

3. The composite tungsten steel reamer of claim 1, wherein: the working part and the mounting part are integrally formed, and a spiral cutting fluid through hole is formed in the cutter body and used for conveying cutting fluid to the front end working part.

4. The composite tungsten steel reamer of claim 1, wherein: the outer surface of the working part is provided with a chip groove which is spirally arranged around the length direction of the working part.

5. The composite tungsten steel reamer of claim 1, wherein: the outer surface of the cutter body is made of tungsten steel alloy and is treated by a coating.

6. The composite tungsten steel reamer of claim 1, wherein: the composite tungsten steel finish reamer is used for processing a stainless steel valve block.