CN112935402B

CN112935402B - PCD reamer

Info

Publication number: CN112935402B
Application number: CN201911267400.8A
Authority: CN
Inventors: 朱均; 刘影; 薛彩虹; 朱敖平
Original assignee: Changzhou Yege Tools Co ltd
Current assignee: Changzhou Yege Tools Co ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2024-05-10
Anticipated expiration: 2039-12-11
Also published as: CN112935402A

Abstract

The invention relates to a PCD reamer, which comprises a reamer handle and a reamer main body, wherein the reamer handle is of a cylindrical structure, the other end of the reamer handle is fixedly connected with the reamer main body, a groove is formed in the connecting part of the reamer handle along the circumferential direction, the reamer main body comprises a first cutting part, a second cutting part and a third cutting part, the third cutting part is of a cylindrical structure, a chamfer is arranged at one end, close to the reamer handle, of the reamer handle, a plurality of cutting ends are distributed at the end, far away from the reamer handle, of the reamer handle along the circumferential direction at equal angles, the second cutting part is of a cylindrical structure and comprises two cutting ends, the two cutting ends are symmetrically distributed along the circumferential direction of the second cutting part, the first cutting part consists of two sections of cylindrical parts and is fixedly connected with the second cutting part, and the two cutting ends are symmetrically distributed along the circumferential direction of the third cutting part. PCD blade is all installed to three cutting portion, and this blade has hardness height, and the wearability is good, and shock resistance is good, and sharpness is high grade characteristics, can effectively reduce the processing line of work piece, promotes finished product precision and effect.

Description

PCD reamer

Technical Field

The invention relates to the field of machining tools, in particular to a PCD reamer.

Background

Along with the rapid development of science and technology, the requirements of the mechanical manufacturing industry on machining precision and machining efficiency are higher and higher, the reamer is a common machining tool, the structural design and material selection of the reamer determine the service life and the machining precision of the reamer, the traditional reamer is made of hard alloy, the wear rate is high, the service life is short, and in the use process, the cutter is frequently replaced, a great amount of time is consumed for cutter setting, so that the working efficiency of equipment is low; the abrasion is faster, the product precision is low, and the quality of the product is low.

Disclosure of Invention

In order to solve the problems of low processing efficiency, low processing precision and short service life of the traditional reamer, the invention provides a novel PCD reamer which is reasonable in structural design and not easy to wear.

In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a PCD reamer, its characterized in that includes reamer handle and reamer main part, reamer handle is cylindrical structure, and its installation end is equipped with the chamfer, and reamer handle's the other end and reamer main part fixed connection, there is a recess its connecting portion along circumference, the reamer main part includes first cutting portion, second cutting portion and third cutting portion, the diameter of third cutting portion is greater than second cutting portion, the diameter of second cutting portion is greater than first cutting portion, and the three cutting portion has same rotational center axle, third cutting portion is cylindrical structure, is equipped with the chamfer in the one end that is close to reamer handle, is kept away from the one end of reamer handle at it, along circumference equiangular distribution a plurality of cutting ends, every cutting end includes cutter installation face, album bits chip surface and cutter, be 90 contained angles between cutter and the album bits chip surface, the cutter is the material blade, and its connected mode with the cutter installation face is the welding, the cutter is two sets of blade one and blade two sets, and every group quantity is 2, and this two sets of cutters are crisscross around the first cutting portion, the second cutting portion is cylindrical structure, and the second cutting portion is the diameter is the first end that is located the first end that the second cutting portion is located the first end, and the cylindrical structure is connected with two circumference, and is located the first end that the second cutting portion is fixed along the circumference, the two ends are located along the first end, the cutting portion, the two ends are cut cylindrical structure, the diameter is fixed to the first end is cut along the diameter and is cut to the first end and is located along the first end and the cylindrical portion.

Furthermore, the blades are all PCD blades,

Furthermore, the PCD blade and the mounting surface of the cutting end are welded,

Further, the reamer body is an integrally formed three-section cutting device made of hard alloy, and is made of 40Cr steel.

Further, the two cutting ends of the first cutting part, the two cutting ends of the second cutting part and the two cutting ends of the first cutting part of the third cutting part of the mounting blade are circumferentially arranged at the same angle.

The invention has the positive effects that: the PCD reamer comprises a reamer handle and a reamer main body, wherein the reamer main body comprises a first cutting part, a second cutting part and a third cutting part, and is made of hard alloy 40Cr steel, so that the reamer is high in hardness, high in wear resistance and wide in application in the field of machining.

Drawings

FIG. 1 is a schematic view of a PCD reamer of the present invention;

FIG. 2 is a side view of the cutting end structure of FIG. 1;

The reamer comprises a reamer body 1, a reamer handle 2, a first cutting part 11, a second cutting part 12, a third cutting part 13, a blade 14, a blade 15, a blade 16, a blade 17, a cutter mounting surface 4, a chip collecting and discharging surface 5 and a cutter 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention: a PCD reamer comprises a reamer handle 2 and a reamer main body 1, wherein the reamer handle 2 is of a cylindrical structure, the mounting end of the reamer handle 2 is provided with a chamfer, the other end of the reamer handle 2 is fixedly connected with the reamer main body 1, a groove is formed in the connecting part of the reamer handle along the circumferential direction, the reamer main body 1 comprises a first cutting part 11, a second cutting part 12 and a third cutting part 13, the diameter of the third cutting part 13 is larger than that of the second cutting part 12, the diameter of the second cutting part 12 is larger than that of the first cutting part 11, the three cutting parts have the same rotation center shaft, the third cutting part 13 is of a cylindrical structure, the end, close to the reamer handle 2, is provided with a chamfer, a plurality of cutting ends are distributed at the end, far away from the reamer handle 2, along the circumferential equal angle, of each cutting end comprises a cutter mounting surface 4, a chip collecting surface 5 and a cutter 6, an included angle is formed between the cutter mounting surface 4 and the chip collecting surface 5, the cutter 5 is a PCD material blade, the connection mode of the cutter 5 and the cutter mounting surface 4 is welding, the cutter 4 is divided into two groups of a first blade 16 and a second blade 17, the number of each group is 2, the blade part of the first blade 16 is in a three-section ladder shape, one end close to the second cutting part 12 is a first ladder, one end far away from the second cutting part 12 is a third ladder, the middle part is a second ladder, the first ladder is in arc connection with the second ladder, the second ladder is in obtuse angle connection with the third ladder, one side of the second ladder part close to the first ladder is provided with a bulge which approximates to a rectangle, the blade part of the second blade 17 is in a right angle shape, the two groups of cutters are staggered around the axis and the like, the second cutting part 12 is in a cylinder structure, one end of the second cutting part is fixedly connected with the third cutting part 13, the other end of the second cutting part is fixedly connected with the first cutting part 11, the second cutting part 12 comprises two cutting ends, the cutting ends are symmetrically distributed along the circumferential direction of the second cutting part 12, the cutting ends are provided with blades 15, the blades 15 are rectangular at the peripheral part of the circumference, a chamfer is arranged at the outermost periphery of the circumference, a groove is formed in the part, close to the first cutting part 11, of the inner side of the circumference, the first cutting part 11 consists of two sections of cylindrical parts, the two sections of cylindrical parts are fixedly connected with the second cutting part 12, one end, close to the second cutting part 12, of the cylindrical parts is larger in diameter, one end, far from the second cutting part 12, of the cylindrical parts is smaller in diameter, two cutting ends are symmetrically distributed along the circumferential direction of the cylindrical parts, the cutting ends are provided with blades 14, and the blades 14 are in a right-angle stepped shape and cover the whole small-diameter cylinder and a small part of the large-diameter cylinder in the first cutting part 11 in the length direction. The two cutting ends of the first cutting part 11, the two cutting ends of the second cutting part 12 and the two cutting ends of the first cutting part 13, on which the first blade 16 is mounted, are circumferentially arranged at the same angular position.

The foregoing is only a preferred 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 should be covered in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. The PCD reamer is characterized by comprising a reamer handle and a reamer main body, wherein the reamer handle is of a cylindrical structure, a chamfer is arranged at the mounting end of the reamer handle, the other end of the reamer handle is fixedly connected with the reamer main body, a groove is formed in the connecting part of the reamer handle along the circumferential direction, the reamer main body comprises a first cutting part, a second cutting part and a third cutting part, the diameter of the third cutting part is larger than that of the second cutting part, the diameter of the second cutting part is larger than that of the first cutting part, the three cutting parts are provided with the same rotation center shaft, the third cutting part is of a cylindrical structure, a chamfer is arranged at one end close to the reamer handle, a plurality of cutting ends are distributed at the end far away from the reamer handle along the circumferential direction at equal angles, each cutting end comprises a cutter mounting surface, a chip collecting and a cutter, the cutter mounting surface and the chip collecting and removing surface form a certain included angle, the cutter is fixedly connected with the cutter mounting surface, the cutter is divided into a first cutter group and a second cutter group, the two cutter groups are distributed in a staggered way around the axis at equal angles, the second cutting part is in a cylindrical structure, one end of the second cutting part is fixedly connected with the third cutting part, the other end of the second cutting part is fixedly connected with the first cutting part, the second cutting part comprises two cutting ends which are symmetrically distributed along the circumferential direction of the second cutting part, the first cutting part consists of two sections of cylindrical parts and is fixedly connected with the second cutting part, one end of the first cutting part, which is close to the second cutting part, is larger in diameter, and the other end of the first cutting part, which is far away from the second cutting part, is smaller in diameter, and the two cutting ends are symmetrically distributed along the circumferential direction;

The cutting edge part of the first blade in the third cutting part is in a three-section ladder shape, one end, close to the second cutting part, of the first blade is a first ladder, one end, far away from the second cutting part is a third ladder, the middle part of the first blade is a second ladder, the first ladder is in arc connection with the second ladder, the second ladder is in obtuse angle connection with the third ladder, one side, close to the first ladder, of the second ladder is provided with a bulge which is approximately rectangular, the cutting edge part of the second blade is in a right angle shape, and the two groups of cutters are distributed in an equiangular staggered manner around the axis; the blade in the second cutting part is rectangular at the peripheral part of the circumference, the outermost periphery of the circumference is provided with a chamfer, and the part, close to the first cutting part, of the inner side of the circumference is provided with a groove; the blade in the first cutting part is in a right-angle stepped shape, and covers the whole small-diameter cylinder and a small part of the large-diameter cylinder in the first cutting part in the length direction;

two cutting ends of the first cutting part, two cutting ends of the second cutting part and two cutting ends of the first mounting blade in the third cutting part, circumferentially disposed at the same angular position.

2. The PCD reamer of claim 1, wherein: the blades are all PCD blades.

3. The PCD reamer of claim 1, wherein: the PCD blade and the cutter mounting surface are welded in a connecting mode.

4. The PCD reamer of claim 1, wherein: the reamer body is an integrally formed three-section cutting device made of hard alloy, and is made of 40Cr steel.