CN223518663U

CN223518663U - A boring tool for hole machining

Info

Publication number: CN223518663U
Application number: CN202421870444.6U
Authority: CN
Inventors: 李慧芳
Original assignee: Hefei Nuoyi Precision Tools Co ltd
Current assignee: Hefei Nuoyi Precision Tools Co ltd
Priority date: 2024-08-05
Filing date: 2024-08-05
Publication date: 2025-11-07
Anticipated expiration: 2034-08-05

Abstract

The utility model discloses a boring cutter for hole processing, which relates to the field of boring cutters and comprises a cutter bar and a cutter handle which are connected in an axial alignment way, wherein liquid channels are formed in the cutter bar and the cutter bar, a cutter groove is formed in the end part of the cutter bar, a blade is arranged on one side of the cutter groove, a liquid hole penetrating through the liquid channel is formed in the other side of the cutter groove, and a liquid guide device is arranged at the position of the cutter handle for guiding cooling liquid into the liquid channel.

Description

Boring cutter for hole machining

Technical Field

The utility model relates to the field of boring cutters, in particular to a boring cutter for hole machining.

Background

PCD boring cutter is a boring cutter tool made of polycrystalline diamond, can precisely process a hole structure, and the temperature of a cutter blade part is rapidly increased in the high-speed boring process, so that the cutter blade is required to be cooled for improving the processing quality and prolonging the service life of the cutter blade, and cooling liquid is traditionally sprayed to the cutter through an external pipeline, but when the boring cutter is deep into the hole, the crack between the cutter body and the hole is narrow, the cooling liquid has low efficiency when reaching the cutter blade part, and the cooling effect is poor.

Disclosure of utility model

The utility model aims to provide a boring cutter for hole machining, which solves the problem that the cooling effect is poor because the traditional external cooling liquid spraying method is difficult to reach the position of a blade in a deep hole.

In order to solve the problems existing in the prior art, the technical scheme of the utility model is as follows:

a boring cutter for hole machining comprises a cutter bar and a cutter handle which are connected in an axial alignment mode, wherein liquid channels are formed in the cutter bar and the cutter bar, a cutter groove is formed in the end portion of the cutter bar, a blade is arranged on one side of the cutter groove, a liquid hole penetrating through the liquid channels is formed in the other side of the cutter groove, and a liquid guiding device is arranged at the position of the cutter handle and used for guiding cooling liquid into the liquid channels.

Preferably, the liquid guiding device comprises a ring sleeve, the ring sleeve is rotatably arranged on the surface of the knife handle, a closed annular cavity is formed between the ring sleeve and the knife handle, a through hole penetrating through the annular cavity and the liquid channel is formed in the surface of the knife handle, and a pipeline is connected to the surface of the ring sleeve.

Preferably, the side of the knife slot away from the knife blade is inclined towards the edge of the knife bar, so that the liquid hole is directed to the edge part of the knife blade edge.

Preferably, the surface of the cutter bar is provided with a chip removal groove, one end of the chip removal groove is connected with the cutter groove, and the other end of the chip removal groove extends towards the cutter handle.

Preferably, the junk slots extend from the tool slot to one end of the tool shank in a reverse spiral direction of the rotation of the tool bar.

Preferably, one end of the cutter bar far away from the cutter groove is provided with a round platform part, and the end part of the chip groove is connected with the inclined surface of the round platform part.

Preferably, the caulking groove is formed in one end, far away from the cutter groove, of the cutter bar, the cutter bar is axially inserted into the caulking groove, and the surface of the cutter bar is radially inserted into the screw to be in threaded connection with the cutter bar, so that the cutter bar is fixedly connected with the cutter bar.

Preferably, the surface of the cutter handle is provided with an expanding part, and the ring sleeve is arranged between the expanding part and the end face of the cutter rod.

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

1. The utility model adopts the built-in liquid channel to conduct cooling liquid to the working end of the cutter bar, and the cooling liquid is directly sprayed to the blade through the liquid hole, so as to be used for rapidly cooling the blade, improve the processing quality, prolong the service life of the blade and have higher utilization rate of the cooling liquid.

2. The utility model discharges the chips through the spiral chip grooves, and the cooling liquid has the effect of assisting chip removal in the process of discharging the cooling liquid from the chip grooves to the outside of the holes, thereby avoiding the influence of chip accumulation on hole machining.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic overall sectional structure of the present utility model.

FIG. 3 is a schematic diagram of the liquid pore structure of the present utility model.

The numerical control tool comprises a tool bar 1, a tool bar 2, a tool bar 3, a ring sleeve 4, a tool groove 5, a blade 6, a chip groove 7, a liquid hole 8, a liquid channel 81, a through hole 9 and a round platform part.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

The boring cutter for hole machining comprises four parts, namely a cutter bar 1, a cutter handle 2, a blade 5 and a liquid guide device;

As shown in fig. 1 and 3, the knife handle 2 is axially aligned and connected to the rear end of the knife handle 1, a liquid channel 8 is axially extended and formed in the center positions inside the knife handle 1 and the knife handle 2, one or two knife grooves 4 are uniformly formed in the edge position of the front end of the knife handle 1, the knife blade 5 is fixed on one side of the knife groove 4 in the opposite direction of rotation, a liquid hole 7 penetrating through the liquid channel 8 is formed in the other side of the knife groove 4, one side of the knife groove 4 away from the knife blade 5 is inclined towards the edge of the knife handle 1, and the liquid hole 7 is directed to the edge part of the edge of the knife blade 5;

As shown in fig. 2, the liquid guiding device comprises a ring sleeve 3, the ring sleeve 3 is rotatably arranged on the surface of the knife handle 2 through a bearing and a sealing ring, a closed annular cavity is formed between the ring sleeve 3 and the knife handle 2, a through hole 81 penetrating through the annular cavity and a liquid channel 8 is formed on the surface of the knife handle 2, and a hose is connected with the ring sleeve 3 and is communicated with the annular cavity;

The tool handle 2 is connected with rotary driving equipment, and hose connection coolant liquid provides device, and drive tool handle 2 drives cutter arbor 1 rotatory, carries out finish machining through blade 5 to the hole inner wall, simultaneously in leading-in annular chamber of coolant liquid through the hose, in making coolant liquid get into liquid way 8 through-hole 81, the front end of coolant liquid direction cutter arbor 1 directly spouts the coolant liquid to blade 5 through liquid hole 7, cools down blade 5 fast.

As shown in fig. 1, a chip groove 6 is formed in the surface of the cutter bar 1, one end of the chip groove 6 is connected with the cutter groove 4, the other end of the chip groove 6 extends spirally to the direction of the cutter bar 2 along the opposite direction of rotation of the cutter bar 1, chips generated by machining the cutter blade 5 are discharged through the chip groove 6, most of cooling liquid is discharged from the hole along the chip groove 6 after the cooling liquid sprayed to the cutter blade 5 fills the whole cutter groove 4, and the cooling liquid conducted along the chip groove 6 has the effect of assisting in discharging and cutting, so that chips are prevented from being accumulated in the machined hole.

As shown in fig. 1, a truncated cone 9 is provided at one end of the cutter bar 1 far from the cutter groove 4, and the end of the chip groove 6 is connected with the inclined surface of the truncated cone 9, so that discharged cooling liquid and chips are diffused outwards along the inclined surface of the truncated cone 9, and chips are prevented from winding the cutter.

As shown in fig. 2, the cutter bar 1 is movably connected with the cutter bar 2, an embedding groove is formed in one end, far away from the cutter groove 4, of the cutter bar 1, the cutter bar 2 is axially inserted into the embedding groove, the surface of the cutter bar 1 is radially inserted into the cutter bar 2 in a screw threaded connection manner, so that the cutter bar 2 and the cutter bar 1 are fixed, the cutter bar 1 is separated from the cutter bar 2 through a disassembling screw, and the inner liquid passage 8 is convenient to process.

As shown in fig. 2, the surface of the tool shank 2 has an enlarged diameter portion, and the ring 3 is disposed between the enlarged diameter portion and the end surface of the tool shank 1, so that the ring 3 has a stable axial mounting position.

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. A boring tool for hole machining, characterized in that it includes a tool holder (1) and a tool shank (2) connected axially, a liquid channel (8) is opened inside the tool shank (2) and the tool holder (1), a tool groove (4) is opened at the end of the tool holder (1), a cutting tool (5) is arranged on one side of the tool groove (4), and a liquid hole (7) through the liquid channel (8) is provided on the other side of the tool groove (4), and a liquid guiding device is provided at the tool shank (2) to conduct coolant into the liquid channel (8);

The liquid guiding device includes a ring sleeve (3), which is rotatably disposed on the surface of the handle (2). A closed annular cavity is formed between the ring sleeve (3) and the handle (2). A through hole (81) is opened on the surface of the handle (2) to pass through the annular cavity and the liquid channel (8). A pipe is connected to the surface of the ring sleeve (3).

2. The boring tool for hole machining according to claim 1, characterized in that the side of the groove (4) away from the blade (5) is inclined toward the edge of the tool holder (1), so that the liquid hole (7) points to the cutting edge of the blade (5).

3. The boring tool for hole machining according to claim 1, characterized in that a chip removal groove (6) is provided on the surface of the tool holder (1), one end of the chip removal groove (6) is connected to the tool groove (4), and the other end of the chip removal groove (6) extends toward the tool holder (2).

4. The boring tool for hole machining according to claim 3, characterized in that the chip removal groove (6) extends in a reverse spiral from one end of the tool groove (4) to the tool holder (2) toward the tool bar (1).

5. The boring tool for hole machining according to claim 3, characterized in that the end of the tool holder (1) away from the tool groove (4) has a frustum (9), and the end of the chip removal groove (6) is connected to the inclined surface of the frustum (9).

6. The boring tool for hole machining according to claim 1, characterized in that a groove is opened at one end of the tool holder (1) away from the tool groove (4), the tool handle (2) is axially inserted into the groove, and a screw is inserted radially into the surface of the tool holder (1) to connect the tool handle (2) to the tool holder (2), so that the tool handle (2) is fixedly connected to the tool holder (1).

7. The boring tool for hole machining according to claim 6, characterized in that the surface of the tool holder (2) has an enlarged diameter portion, and the ring sleeve (3) is placed between the enlarged diameter portion and the end face of the tool holder (1).