CN219053118U

CN219053118U - PCD reamer with roughness adjusting edge

Info

Publication number: CN219053118U
Application number: CN202223051629.8U
Authority: CN
Inventors: 刘玉志; 周强; 汤一平; 丁小刚; 吴继波; 肖明强
Original assignee: Mediff Tool Technology Jiangsu Co ltd
Current assignee: Mediff Tool Technology Jiangsu Co ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-05-23
Anticipated expiration: 2032-11-17

Abstract

The PCD reamer with the roughness adjusting edge comprises a cutter seat and a cutter body, wherein the bottom of the cutter body is welded with the top of the cutter seat, the cutter body further comprises four groups of cutting strips and cooling holes, each group of cutting strips further comprises a first cutting edge, a second cutting edge and a third cutting edge, the distances from the four groups of cutting strips to the axis of the cutter body are equal, and the distances between the four groups of cutting strips are equal; the cooling hole is positioned at the center of the top of the cutter body, penetrates through the axis of the cutter body and forms a cooling channel; four chip grooves are formed in the surface of the cutter body, and each chip groove is positioned between two groups of cutting bars; the cutting strip is also provided with an elastic groove which radially penetrates through the cutting strip, and the elastic groove is positioned between the first blade and the cooling channel; the chip removal groove is provided with three water outlets which are divided into a first water outlet, a second water outlet and a third water outlet, and the water outlets penetrate through the cooling channel; the reamer head has a compact structure, the chip removal efficiency is enhanced, the roughness is controlled, and the service life of the reamer head is prolonged.

Description

PCD reamer with roughness adjusting edge

Technical Field

The utility model relates to the field of cutters for machining, in particular to a PCD reamer with a roughness adjusting blade.

Background

Parts of special parts in the automobile industry are subjected to strict requirements on the roughness range and the machining precision of the hole wall. In particular, the pore walls of some aluminum alloy parts are required to have high pore size, high machining efficiency and long service life of the cutter, and the roughness of the pore walls is required to be controlled within a certain range. In the past, only PCD boring cutters can be adopted to process parts with the requirements, the efficiency is low, the service life of the cutters is poor, and the dimensional stability of the parts is difficult to control.

In order to further solve the technical problems, the Chinese patent application with publication number of CN213437599U discloses a PCD reamer with controllable roughness, which comprises a cutter holder, a cutter body and a cutter edge. The cutter body is detachably arranged on the cutter seat, one end of the cutter body is provided with at least a chip removal groove I and a chip removal groove II in the radial direction, and a cutting surface I of the chip removal groove I is provided with a groove; the cutting edge comprises at least a cutting edge I and a cutting edge II, wherein the cutting edge I is adjustably arranged in the chip removal groove I, and the cutting edge II is arranged in the chip removal groove II. The cutting surface I of the chip removal groove I is provided with a groove, so that the distance between the cutting edge I and the cutter body can be adjusted, and further, the requirements of different roughness are met; the multiple blades are processed simultaneously, so that the processing time is shortened, and the efficiency is improved. The problem that the fixed setting of destruction sword leads to same cutter can not adapt to different roughness demands of different work pieces's with hole, and hole processing time is long inefficiency has been solved in the setting of specific structure.

The structure solves the problem of uncontrollable roughness to a certain extent, but still has the problems of non-wear-resistant knife edge, uncontrollable feed lines, insufficient chip removal, insufficient working efficiency, insufficient thorough chip removal, easy blockage of chip removal grooves by chips, influence on chip removal efficiency, insufficient service life of a cutter and the like; therefore, how to design a reamer with stable internal structure, smooth chip removal and more accurate roughness adjustment is a problem that needs to be solved by the person skilled in the art.

Disclosure of Invention

In order to solve the problems, the utility model provides the following technical scheme: the PCD reamer with the roughness adjusting edges comprises a cutter seat and a cutter body, wherein the bottom of the cutter body is welded with the top of the cutter seat, the cutter body further comprises four groups of cutting strips and cooling holes, each group of cutting strips further comprises a first cutting edge, a second cutting edge and a third cutting edge, the distances from the four groups of cutting strips to the axis of the cutter body are equal, and the distances between the four groups of cutting strips are equal; the cooling hole is positioned at the center of the top of the cutter body, and penetrates through the axis of the cutter body to form a cooling channel; four chip grooves are formed in the surface of the cutter body, and each chip groove is positioned between two groups of cutting bars; the cutting strip is also provided with an elastic groove, the elastic groove radially penetrates through the cutting strip, the length of the elastic groove is equal to the distance from the second blade to the top of the cutter body, and the elastic groove is positioned between the first blade and the cooling channel; the chip removal groove is provided with three water outlets, the water outlets are divided into a first water outlet, a second water outlet and a third water outlet, the first water outlet is positioned below the first cutting edge, the second water outlet is positioned below the second cutting edge, the third water outlet is positioned below the third cutting edge, and the water outlets penetrate through the cooling channel.

Preferably, the cutter body further comprises a countersunk head screw and an adjusting screw, one end of the countersunk head screw is located inside the first cutting edge, the other end of the countersunk head screw penetrates through the elastic groove, the adjusting screw is located at the axial center position of the elastic groove, one end of the adjusting screw is located between the first cutting edge and the second cutting edge, the other end of the adjusting screw is clamped into the cutter body, and the adjusting screw penetrates through the elastic groove.

Preferably, the second blade is radially higher than the first blade, and the third blade is radially higher than the second blade.

Preferably, the axis of the tool apron is collinear with the axis of the tool body.

Preferably, the cutter body is made of medium carbon alloy steel.

Compared with the prior art, the utility model has the following beneficial effects:

1. compared with the boring of a single-edge boring cutter, the multi-edge reamer realizes the hole processing with high efficiency, long service life, high precision and high stability.

2. An elastic groove is formed on the cutter body, and the protrusion of the boring cutter blade is regulated by two regulating screws assembled on the cutter body; compared with the installation of an additional adjustable elastic cutter holder, the design structure of the elastic groove is simple and reliable, and the dynamic balance of the cutter body is basically not damaged.

3. By adjusting the screws, the extremely high surface morphology obtained during reaming of the PCD reamer is changed, controllable feed lines are generated, and the requirement of adjustable roughness is met.

Drawings

Fig. 1 is a perspective view of an embodiment of the present utility model.

Fig. 2 is a right side view of an embodiment of the present utility model.

Fig. 3 is a schematic structural view of an adjusting screw according to an embodiment of the present utility model.

Fig. 4 is a front view of an embodiment of the present utility model.

In the figure, a first blade, a second blade, a third blade, a countersunk head screw, an adjusting screw, a cooling hole, a spring groove, a chip removing groove, a tool holder, a tool body, a tool bit, a tool body, a first water outlet, a second water outlet, a third water outlet and a cutting strip are respectively arranged in sequence, wherein the first blade, the second blade, the third blade, the countersunk head screw, the adjusting screw, the cooling hole, the spring groove, the chip removing groove, the tool holder, the tool bit, the tool body, the first water outlet, the second water outlet, the third water outlet and the third water outlet are respectively arranged in sequence, and the cutting strip is arranged in sequence.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

1-4, the PCD reamer with the roughness adjusting edge comprises a cutter holder 9 and a cutter body 10, wherein the bottom of the cutter body 10 is welded with the top of the cutter holder 9, the cutter body 10 further comprises four groups of cutting strips 14 and cooling holes 6, each group of cutting strips 14 further comprises a first cutting edge 1, a second cutting edge 2 and a third cutting edge 3, the distances from the four groups of cutting strips 14 to the axial line of the cutter body 10 are equal, and the distances among the four groups of cutting strips 14 are equal; the cooling hole 6 is positioned at the center of the top of the cutter body 10, and the cooling hole 6 penetrates through the axial center of the cutter body 10 to form a cooling channel; four chip grooves 8 are formed in the surface of the cutter body 10, and each chip groove 8 is positioned between two groups of cutting bars 14; the cutting strip 14 is also provided with an elastic groove 7, the elastic groove 7 radially penetrates through the cutting strip 14, the length of the elastic groove 7 is equal to the distance from the second blade 2 to the top of the cutter body 10, and the elastic groove 7 is positioned between the first blade 1 and the cooling channel; three water outlets are formed in the chip removal groove 8 and are divided into a first water outlet 11, a second water outlet 12 and a third water outlet 13, wherein the first water outlet 11 is positioned below the first blade 1, the second water outlet 12 is positioned below the second blade 2, the third water outlet 13 is positioned below the third blade 3, and the water outlets penetrate through the cooling channel; the cutting of many cutting edges improves machining efficiency, prolongs cutter life-span, guarantees machining precision, and a plurality of apopores can play the chip removal effect in the course of working, and when the chip got into chip groove 8, outside the cooling liquid can be discharged the hole with the chip, the cooling hole pours into the cooling liquid into can be for the tool bit cooling into, can protect the blade under the high pressure condition, increases blade life.

As shown in fig. 3, the cutter body 10 further comprises a countersunk head screw 4 and an adjusting screw 5, one end of the countersunk head screw 4 is positioned in the first cutter blade 1, the other end of the countersunk head screw 4 penetrates through the elastic groove 7, the adjusting screw 5 is positioned in the axial center position of the elastic groove 7, one end of the adjusting screw 5 is positioned between the first cutter blade 1 and the second cutter blade 2, the other end of the adjusting screw 5 is clamped into the cutter body 10, and the adjusting screw 5 penetrates through the elastic groove 7; the adjusting screw 5 controls the radial height of the blade, and simultaneously adjusts cutting parameters to realize controllable and adjustable roughness; countersunk head screw 4 makes the cutting edge detachable, realizes that the feed line is controllable, realizes reamer blade variety.

As shown in fig. 4, the second blade 2 is radially higher than the first blade 1, and the third blade 3 is radially higher than the second blade 2, so that the cutting depth is controllable, the working efficiency is improved, and the machining precision is ensured by using a stepped blade.

As shown in fig. 1, the axis of the tool apron 9 is collinear with the axis of the tool body 10; the collineation can ensure the security of punching, can significantly reduce the risk of askew, reduce the breakage rate, make work efficiency improve greatly.

Referring to fig. 1, the cutter body 10 is a medium carbon alloy steel. The medium carbon alloy steel has certain plasticity, high strength and toughness, good machinability, good comprehensive mechanical properties after quenching and tempering treatment and wide application.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. PCD reamer with roughness adjustment edge, including blade holder (9) and cutter body (10), cutter body (10) bottom with blade holder (9) top welding, its characterized in that: the cutter body (10) further comprises four groups of cutting bars (14) and cooling holes (6), each group of cutting bars (14) further comprises a first cutting edge (1), a second cutting edge (2) and a third cutting edge (3), the distances from the four groups of cutting bars (14) to the axial lead of the cutter body (10) are equal, and the distances between the four groups of cutting bars (14) are equal; the cooling hole (6) is positioned at the center of the top of the cutter body (10), and the cooling hole (6) penetrates through the axis of the cutter body (10) to form a cooling channel; four chip grooves (8) are formed in the surface of the cutter body (10), and each chip groove (8) is positioned between two groups of cutting bars (14); the cutting strip (14) is further provided with an elastic groove (7), the elastic groove (7) radially penetrates through the cutting strip (14), the length of the elastic groove (7) is equal to the distance from the second cutting edge (2) to the top of the cutter body (10), and the elastic groove (7) is positioned between the first cutting edge (1) and the cooling channel; the chip removal groove (8) is provided with three water outlet holes, the water outlet holes are divided into a first water outlet hole (11), a second water outlet hole (12) and a third water outlet hole (13), the first water outlet hole (11) is positioned below the first cutting edge (1), the second water outlet hole (12) is positioned below the second cutting edge (2), the third water outlet hole (13) is positioned below the third cutting edge (3), and the water outlet holes penetrate through the cooling channel.

2. The PCD reamer with roughness adjustment edges of claim 1, wherein: the cutter body (10) further comprises a countersunk head screw (4) and an adjusting screw (5), one end of the countersunk head screw (4) is located inside the first cutter blade (1), the other end of the countersunk head screw (4) penetrates through the elastic groove (7), the adjusting screw (5) is located at the axial center position of the elastic groove (7), one end of the adjusting screw (5) is located between the first cutter blade (1) and the second cutter blade (2), the other end of the adjusting screw (5) is clamped into the cutter body (10), and the adjusting screw (5) penetrates through the elastic groove (7).

3. The PCD reamer with roughness adjustment edges according to claim 2, characterized in that: the second blade (2) is radially higher than the first blade (1), and the third blade (3) is radially higher than the second blade (2).

4. The PCD reamer with roughness adjustment edge of claim 3, wherein: the axial lead of the tool apron (9) is collinear with the axial lead of the tool body (10).

5. The PCD reamer with roughness adjustment edges according to claim 4, characterized in that: the cutter body (10) is made of medium carbon alloy steel.