CN218252941U

CN218252941U - PCD boring cutter with inner chip removal function

Info

Publication number: CN218252941U
Application number: CN202222438239.XU
Authority: CN
Inventors: 周强; 刘玉志; 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: 2022-09-15
Filing date: 2022-09-15
Publication date: 2023-01-10
Anticipated expiration: 2032-09-15

Abstract

A PCD boring cutter with internal scraps discharging comprises a cutter body and two inner hexagonal socket head cap screws, wherein a blade is welded at the cutting end of the cutter body, a cooling hole is formed in the other end of the cutter body, a pressing plate is fixed at the cutting end of the cutter body after the two inner hexagonal socket head cap screws are arranged in tandem, a scrap entering space is formed between the pressing plate and the blade, the side, opposite to the blade, of the inner side of the scrap entering space is a cambered surface, and the cooling hole axially penetrates through the cutter body; a chip groove is formed at one end, close to the cutting, of the cutter body, the inner side face of the chip groove is parallel to the blade cutting edge face, the side face, far away from the cutting end, of the chip groove is an arc face, the edge, connected with the pressing plate, of the chip groove is lower than the edge of the other side of the chip groove, the chip groove is communicated with the chip entering space, a drain hole structure is formed in the pressing plate, and the drain hole structure is communicated with the cooling hole; the utility model discloses compact structure, and inner structure is stable, has guaranteed under the smooth condition of cutting hole, has improved the function of chip removal.

Description

PCD boring cutter with inner chip removal function

Technical Field

The utility model relates to a boring cutter tool technical field specifically is an interior chip removal PCD boring cutter.

Background

The boring cutter is one of boring cutters, and the most common occasions are inner hole machining, hole expanding, profiling and the like.

In the processing of some aluminum alloy products, need carry out the processing of shoulder hole, at the in-process of processing aluminum alloy valve body oil duct hole, because high-pressure cooling's washing away, the smear metal that produces can directly rush into adjacent oil duct hole along with the coolant liquid at the PCD boring cutter arbor that most centers go out water at present, causes the smear metal to remain in the part, can't clear away.

In order to further solve the technical problem, chinese patent application publication No. CN202022145282.8 discloses an externally discharging chip boring cutter for hole machining, a using end of a cutter body is provided with two chip discharging grooves along a length direction thereof, the two chip discharging grooves are uniformly distributed along a circumferential direction of the cutter body, chip feeding ends of the two chip discharging grooves are both arranged through the using end of the cutter body, a chip discharging stop block is arranged at the chip feeding end of each chip discharging groove, two cutting tools are fixed at an end of the using end of the cutter body, the two cutting tools are matched with two cooling holes and are arranged corresponding to the chip discharging stop blocks, and aluminum chips generated by processing of the cutting tools are stopped by the chip discharging stop blocks and flow to the chip discharging grooves along the chip discharging stop blocks. The utility model can ensure that the aluminum scraps can smoothly enter the scrap discharge groove along the scrap discharge stop block when the through hole is processed, thereby ensuring that the aluminum scraps are discharged outside the hole and reducing the residual amount of the aluminum scraps in the cavity; the two cutting knives are symmetrically designed and participate in cutting simultaneously, so that the machining efficiency is improved, the aluminum scraps generated by machining are discharged along the direction of the scrap discharge groove by the scrap discharge stop block and cannot enter the cavity of the machined workpiece, and the cleanliness of the workpiece is improved. The structure solves the problem of chip removal to a certain extent, but can not completely remove residual scrap iron inside, and can not take down the chip removal stop block, so that the cutter is inconvenient when the cutter needs to be replaced or the cutter head needs to be polished. Therefore, how to design a boring cutter which has a compact structure, can completely remove chips and can be detached at any time is a technical problem to be solved by the technical personnel at present.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an in the cutting hole in-process, prior art can't clear away the technical problem of the smear metal of inside production completely, can not satisfy the operation requirement of certain high-end technical equipment, aims at providing an interior chip removal PCD boring cutter.

In order to solve the above problem, the utility model provides a following technical scheme: the PCD boring cutter comprises a cutter body and two inner hexagonal socket head cap screws, wherein a blade is welded at one cutting end of the cutter body, a cooling hole is formed in the other end of the cutter body, a pressure plate is fixed at one cutting end of the cutter body after the two inner hexagonal socket head cap screws are connected in tandem, a chip entering space is formed between the pressure plate and the blade, the surface, opposite to the blade, of the inner side of the chip entering space is a cambered surface, and the cooling hole axially penetrates through the cutter body; the cutter body is close to cutting one end and still opens the chip groove, the chip groove medial surface with blade cutting edge face is parallel, the side that the cutting one end was kept away from to the chip groove is the cambered surface, the border that the chip groove was met with the clamp plate is less than the border of another side, the chip groove with go into the bits space and communicate with each other, set up the wash port structure on the clamp plate, the wash port structure with the cooling hole intercommunication.

Preferably, the drain hole structure comprises a first drain hole, a second drain hole and a third drain hole, the second drain hole is communicated with the third drain hole, the first drain hole is communicated with the chip groove, the second drain hole is communicated with the cooling hole, and the third drain hole is communicated with the chip entering space.

Preferably, the length of the blade is greater than the radius of the platen.

Preferably, the size of the cooling hole is the same as that of the second drain hole, and the first drain hole and the third drain hole are smaller than that of the cooling hole.

Preferably, the cutting edge surfaces of the blades are all inclined inwards to form a cutting edge angle of 75-85 degrees.

Preferably, the edge of the side, close to the axis of the cutter body, of the chip groove is higher than the edge of the side, far away from the cutter body, of the chip groove.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the cutter body has simple structure and compact size, and has no influence on the processing process such as interference and the like;

2. the cutting scraps can be discharged backwards in time and cannot enter other holes connected with the processed hole;

3. the operation is convenient and fast, and special equipment and auxiliary tools are not needed;

4. the plate and the cutter body adopt a split structure, and welding and grinding of the PCD cutting edge and chip changing and polishing are not affected.

Drawings

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

Fig. 2 is a front view of an embodiment of the present invention.

Fig. 3 is a plan view of a platen according to an embodiment of the present invention.

Fig. 4 is a right side view of an embodiment of the present invention.

Fig. 5 is a left side view of an embodiment of the present invention.

Fig. 6 is a schematic sectional view of three drainage holes according to an embodiment of the present invention.

In the figure, 1, a scrap entering space, 2, a pressing plate, 3, a cutter body, 4, a chip groove, 5, a blade, 6, an inner hexagonal socket head screw, 7, a cooling hole, 8, a first water drainage hole, 9, a second water drainage hole and 10, a third water drainage hole are arranged.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the PCD boring cutter with the internal chip removal function comprises a cutter body 3 and two internal hexagonal socket head cap screws 6, wherein a blade 5 is welded at one cutting end of the cutter body 3, a cooling hole 7 is formed at the other end of the cutter body 3, a pressure plate 2 is fixed at one cutting end of the cutter body 3 by the two internal hexagonal socket head cap screws 6 in tandem, a chip entering space 1 is formed between the pressure plate 2 and the blade 5, one surface, opposite to the blade 5, of the inner side of the chip entering space 1 is an arc surface, and the cooling hole 7 axially penetrates through the cutter body 3; a chip groove 4 is further formed in one end, close to the cutting, of the cutter body 3, the inner side face of the chip groove 4 is parallel to the cutting edge face of the blade 5, the side face, far away from the cutting end, of the chip groove 4 is an arc face, the edge, connected with the pressing plate 2, of the chip groove 4 is lower than the edge of the other side of the chip groove, the chip groove 4 is communicated with the chip entering space 1, a drain hole structure is formed in the pressing plate 2, and the drain hole structure is communicated with the cooling hole 7; the cutter body 3 is made of 42CrMo alloy steel, the blade 5 is made of polycrystalline diamond, the inner hexagonal socket head cap screw 6 is alloy steel, and the diamond cutter has the characteristics of high hardness, high compressive strength, good heat conductivity, good wear resistance and the like, and can obtain high machining precision and machining efficiency in high-speed cutting; the chip entering space 1 and the chip discharge groove 4 discharge chips backwards in time, so that the chips cannot enter other holes connected with the processed hole during cutting, the time for cleaning the processed hole is greatly reduced, the time cost is saved, the cooling hole 7 conveys cold water into the chip entering space 1 and the chip discharge groove 4, the cooling effect is achieved, the chips can be guided into the chip discharge groove 4 along the belt, the manufacturing cost is saved, the pressing plate 2 and the cutter body 3 are of split structures, the welding and grinding of the cutting edge and the chip changing and polishing are not affected, and the influence on the processing process is reduced.

Referring to fig. 6, the drain hole structure includes a first drain hole 8, a second drain hole 9 and a third drain hole 10, the second drain hole 9 is communicated with the third drain hole 10, the first drain hole 8 is communicated with the chip groove 4, the second drain hole 9 is communicated with the cooling hole 7, and the third drain hole 10 is communicated with the chip entering space 1; cold water enters through the cooling hole 7, passes through the second drain hole 9, flows into the third drain hole 10, enters the cutting belt into the chip space 1, discharges the water left in the water pipe into the chip groove 4 through the first drain hole 8, and introduces the water with the cutting in the chip space 1 into the chip groove 4 through the flowing of the water, so that the cutting is discharged, the cutting accumulation is reduced, and the effect of internal chip removal is achieved.

Referring to fig. 4, the length of the blade 5 is greater than the radius of the platen 2; the blade 5 can easily cut off the part to be removed, so that the cutting can smoothly enter the scrap entering space 1, and the cost of manpower and material resources is reduced.

Referring to fig. 6, the cooling hole 7 is the same size as the second drain hole 9, and the first drain hole 8 and the third drain hole 10 are both smaller than the cooling hole 7; the first drain hole 8 and the third drain hole 10 are smaller than the second drain hole 9, so that the pressure intensity of a pipeline inside the pressing plate 2 can be increased, the impulsive force of water flow can be increased, the guide is made for smoothly taking out cutting, the action of external force is reduced, and the manufacturing cost of machinery is reduced.

Referring to fig. 3, the edge surfaces of the blades 5 are all inclined inwards, the formed edge angle is 75-85 degrees, boring machining is facilitated, the boring cutter is in a high-speed rotating state in machining, the acute edge angle reduces the problem of edge breakage caused by tangential force of the cutting edge, the service life of the cutter head is prolonged, and cost is reduced.

Referring to fig. 2, the edge of the chip groove 4 close to the axis of the cutter body 3 is higher than the edge of the chip groove 4 far from the cutter body 3; the inside height of chip groove can guide rivers to flow smoothly, and the prevention cutting is piled up, reduces the not enough smoothness that leads to the hole of chip removal clearance when using and is ground the problem of flower by iron fillings.

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

Claims

1. The utility model provides an interior chip removal PCD boring cutter, includes cutter body (3) and two hexagon socket head cap screws (6), its characterized in that: a blade (5) is welded at one cutting end of the cutter body (3), a cooling hole (7) is formed in the other end of the cutter body (3), two hexagon socket head cap screws (6) are arranged in tandem to fix a pressing plate (2) at one cutting end of the cutter body (3), a chip entering space (1) is formed between the pressing plate (2) and the blade (5), one surface, opposite to the blade (5), of the inner side of the chip entering space (1) is an arc surface, and the cooling hole (7) axially penetrates through the cutter body (3); the utility model discloses a cutting blade, including cutter body (3), blade (5), chip groove (4) medial surface and blade (4) cutting edge face are parallel, the side of cutting one end is kept away from in chip groove (4) is the cambered surface, chip groove (4) with the border that clamp plate (2) met is less than the border of another side, chip groove (4) with it communicates with each other to go into bits space (1), set up the wash port structure on clamp plate (2), the wash port structure with cooling hole (7) intercommunication.

2. The internal chip removal PCD boring cutter of claim 1, wherein: the drain hole structure comprises a first drain hole (8), a second drain hole (9) and a third drain hole (10), wherein the second drain hole (9) is communicated with the third drain hole (10), the first drain hole (8) is communicated with the chip groove (4), the second drain hole (9) is communicated with the cooling hole (7), and the third drain hole (10) is communicated with the chip entering space (1).

3. The internal chip removal PCD boring cutter of claim 2, wherein: the length of the blade (5) is larger than the radius of the pressure plate (2).

4. The internal chip removal PCD boring cutter of claim 3, wherein: the size of the cooling hole (7) is consistent with that of the second drain hole (9), and the first drain hole (8) and the third drain hole (10) are smaller than that of the cooling hole (7).

5. The internal chip removal PCD boring cutter of claim 4, wherein: the blade surfaces of the blades (5) are all inclined inwards, and the formed blade angle is 75-85 degrees.

6. The internal chip removal PCD boring cutter of claim 5, wherein: the edge of the chip groove (4) close to the side of the axis of the cutter body (3) is higher than the edge of the chip groove (4) far away from the side of the cutter body (3).