Automatic chip breaking and discharging device of deep hole drilling tool

Abstract

The utility model discloses an automatic chip breaking and discharging device of a deep hole drilling cutter, which relates to the technical field of machining cutters and comprises a cutter handle, a cutter body, a cutter head, a chip discharging mechanism and a chip breaking mechanism. The front end of the cutter handle is provided with the cutter body, and the front end of the cutter body is provided with the cutter head. Wherein cooling liquid holes which are communicated with one another are formed in the cutter handle, the cutter body and the cutter head, a plurality of chip feeding grooves are formed in the cutter head, and chip discharging grooves are formed in the cutter body; the chip removal mechanism comprises a liquid outlet hole; by means of the liquid outlet holes formed in the tool bit, cooling liquid can be sprayed out from the deepest position of a machining hole in the drilling machining process, the cooling liquid drives cuttings to be automatically discharged along the four-channel chip inlet grooves and the chip discharging grooves, the situation that a tool body is damaged due to the fact that the cuttings are accumulated is avoided, and the machining efficiency is improved. And the cutter can be cooled.

Description

Technical Field

[0001] This utility model relates to the technical field of machining tools, specifically to an automatic chip breaking and chip removal device for deep hole drilling tools. Background Technology

[0002] Deep hole drilling tools are special tools designed for machining deep holes (the ratio of hole depth to hole diameter is greater than 6). Deep hole drilling tools are usually designed with a slender structure to increase the machining depth. When the tool cuts inside the hole, if the chips are not removed in time, they can accumulate and easily lead to tool damage.

[0003] Chinese patent CN217529349U discloses a forming milling cutter with chip removal and chip breaking function. The technical solution is to cut the chips by opening chip breaking grooves on the cutter body so that the chips will not entangle, and to discharge the chips through chip removal grooves. In addition, heat dissipation holes are provided in the middle of the cutter body to dissipate heat from the tool.

[0004] Referring to the above technical solutions, although existing tools can remove chips through chip removal grooves on the outside, chip removal relies solely on the movement of the chips themselves. While this can effectively remove chips during shallow hole machining, it is difficult to quickly remove chips deep inside the tool during deep hole machining due to the greater depth of the tool. Some chips will still remain on the tool body, affecting the machining process. Furthermore, the heat dissipation holes have limited heat dissipation effect, which affects the tool's service life. Utility Model Content

[0005] This invention provides an automatic chip breaking and chip removal device for deep hole drilling tools, which has the advantages of automatically removing chips and cooling the tool, thus solving the problems of existing tools having difficulty in removing chips and excessively high temperatures.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic chip breaking and chip removal device for deep hole drilling tools, comprising a tool holder, a tool body mounted at the front end of the tool holder, a cutting head mounted at the front end of the tool body, and further comprising a chip removal mechanism and a chip breaking mechanism, wherein:

[0007] The handle, blade, and tip are all provided with interconnected coolant holes. The tip is provided with multiple chip inlet grooves, and the blade is provided with multiple chip outlet grooves corresponding to the chip inlet grooves.

[0008] The chip removal mechanism includes multiple liquid outlet holes disposed on the outer wall of the cutter head, and the liquid outlet holes are connected to the coolant holes;

[0009] The chip breaking mechanism includes multiple chip breaking blades installed in the chip removal groove.

[0010] As a preferred technical solution of this utility model, the chip removal groove is an arc-shaped slot that extends to the connection between the blade and the handle. The blade is also provided with a plurality of equally spaced annular connecting grooves, and different chip removal grooves are connected by the connecting grooves.

[0011] As a preferred technical solution of this utility model, there are four chip removal grooves and four chip inlet grooves, which are arranged in a 90° angle around the outer wall of the cutter head and the cutter body.

[0012] As a preferred technical solution of this utility model, the chip breaker is fixed in the middle of the chip removal groove and runs through the entire blade body, and the chip breaker is provided with multiple staggered chip breaker grooves.

[0013] As a preferred embodiment of the present invention, the chip removal mechanism further includes a liquid outlet pipe installed in the chip removal groove. The liquid outlet pipe is connected to the coolant hole through a connecting pipe, and the outlet of the liquid outlet pipe faces the tool holder.

[0014] As a preferred embodiment of this utility model, a guide platform is also installed in the chip removal groove. The guide platform is an arc-shaped platform whose width increases towards the tool holder.

[0015] As a preferred embodiment of this utility model, the liquid outlet pipes are arranged symmetrically in pairs, and the guide platform is symmetrically provided with mounting holes on the side facing the knife handle, and the liquid outlet pipes are embedded in the mounting holes.

[0016] Compared with the prior art, this utility model provides an automatic chip breaking and chip removal device for deep hole drilling tools, which has the following beneficial effects:

[0017] This invention utilizes multiple coolant outlets located at the cutting head to spray coolant from the deepest part of the drilled hole during drilling. The coolant then carries the chips along the four-channel chip inlet and chip outlet channels for rapid and automatic discharge, preventing chip accumulation from damaging the cutting tool. It also cools the cutting tool, extending its service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is an exploded view of the present invention;

[0020] Figure 3 This utility model Figure 2 Enlarged view of area A in the middle;

[0021] Figure 4 This is a cross-sectional view of the internal structure of this utility model;

[0022] Figure 5 This utility model Figure 4 Enlarged view of area B in the middle;

[0023] Figure 6 This is a schematic diagram of the flow guide platform structure of this utility model.

[0024] In the diagram: 1. Tool holder; 11. Coolant hole; 2. Tool body; 21. Chip removal groove; 22. Connecting groove; 3. Tool tip; 31. Chip inlet groove; 4. Chip removal mechanism; 41. Coolant outlet hole; 42. Coolant outlet pipe; 43. Connecting pipe; 44. Flow guide platform; 441. Mounting hole; 5. Chip breaking mechanism; 51. Chip breaking cutter; 52. Chip breaking groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] Please see Figures 1-6 This utility model discloses an automatic chip breaking and chip removal device for deep hole drilling tools, including a tool holder 1, a tool body 2 mounted on the front end of the tool holder 1, a tool head 3 mounted on the front end of the tool body 2, and a chip removal mechanism 4 and a chip breaking mechanism 5, wherein:

[0028] The handle 1, the blade 2, and the cutting head 3 are all provided with interconnected coolant holes 11. The cutting head 3 is provided with multiple chip inlet grooves 31, and the blade 2 is provided with multiple chip outlet grooves 21 corresponding to the chip inlet grooves 31.

[0029] The chip removal mechanism 4 includes multiple liquid outlet holes 41 disposed on the outer wall of the cutter head 3, and the liquid outlet holes 41 are connected to the coolant holes 11;

[0030] The chip breaking mechanism 5 includes a plurality of chip breaking blades 51 installed in the chip removal groove 21.

[0031] Please refer to the appendix. Figure 1-3 The chip removal groove 21 is an arc-shaped slot that extends to the connection between the blade 2 and the handle 1. The blade 2 is also provided with multiple equally spaced annular connecting grooves 22, and different chip removal grooves 21 are connected through the connecting grooves 22.

[0032] It should be noted that the direction of the connecting groove 22 is inclined towards the tool holder 1. When the coolant in the chip removal groove 21 enters the adjacent chip removal groove 21 through the connecting groove 22, when the coolant comes out from the connecting groove 22, it still flows towards the tool holder 1 to flush out the chips.

[0033] Specifically, during the waste removal process, the chips are flushed out by the coolant along the chip removal groove 21. At the same time, the coolant can pass through the connecting groove 22 and enter the adjacent chip removal groove 21 to flush out, thus avoiding blockage caused by excessive chips in some chip removal grooves 21.

[0034] Furthermore, there are four chip removal grooves 21 and four chip inlet grooves 31, which are arranged in a 90° angle around the outer wall of the cutter head 3 and the cutter body 2.

[0035] Specifically, the four-channel chip removal groove 21 can flush out all chips from multiple directions.

[0036] Furthermore, the chip breaker 51 is fixed in the middle of the chip removal groove 21 and runs across the entire blade body 2. The chip breaker 51 is provided with multiple staggered chip breaker grooves 52.

[0037] It should be noted that the chip breaker 51 is vertically positioned in the middle of the chip discharge groove 21, so as not to obstruct the discharge of chips.

[0038] Specifically, the chip breaker 51 can break up the chips in the chip discharge groove 21 as the blade 2 rotates, without affecting the chip discharge.

[0039] Example 2

[0040] Based on the above embodiment 1, please refer to the appendix. Figure 4 , Figure 5 , Figure 6 The chip removal mechanism 4 also includes a liquid outlet pipe 42 installed in the chip removal groove 21. The liquid outlet pipe 42 is connected to the coolant hole 11 through a connecting pipe 43, and the opening of the liquid outlet pipe 42 faces the tool holder 1.

[0041] Specifically, multiple liquid outlet pipes 42 within the chip discharge trough 21 ensure that the chips are always powered during the discharge process.

[0042] Furthermore, a flow guide 44 is also installed in the chip removal groove 21. The flow guide 44 is an arc-shaped platform whose width increases in the direction of the tool holder 1.

[0043] Specifically, the arc-shaped design at the top of the arc-shaped platform allows coolant and cutting material to pass through normally, while the end-stage ramp structure enhances the discharge of coolant and chips.

[0044] Furthermore, the liquid outlet pipes 42 are arranged symmetrically in pairs, and the guide platform 44 is symmetrically provided with mounting holes 441 on the side facing the knife handle 1, and the liquid outlet pipes 42 are embedded in the mounting holes 441.

[0045] Specifically, the arc-shaped platform protects the liquid outlet pipe 42 to prevent it from being damaged by the friction of the cutting chips.

[0046] The working principle and usage process of this utility model: When performing deep hole drilling, the cutter body 2 and the cutter head 3 rotate to open the hole and penetrate into the workpiece. At this time, the coolant hole 11 transports the coolant to the coolant outlet hole 41 of the cutter head 3 and sprays it out. The sprayed coolant carries the chips generated by drilling into the chip inlet groove 31. Then, the coolant and chips enter the chip discharge groove 21 along the chip inlet groove 31 and move towards the tool holder 1 along the chip discharge groove 21 and are discharged. At the same time, the coolant cools the cutter head 3 and the entire cutter body 2.

[0047] As the coolant and chips move along the chip removal groove 21 toward the tool holder 1, the coolant in the coolant hole 11 is also sprayed toward the tool holder 1 through the outlet pipe 42. When the chips and coolant pass through an arc-shaped platform, the coolant sprayed from the outlet pipe 42 on the arc-shaped platform will provide new thrust for cutting and coolant, so that the coolant and chips are discharged faster.

Claims

1. A deep hole drilling tool automatic chip breaking and removing device, comprising a tool shank (1), a tool body (2) is installed at the front end of the tool shank (1), a tool head (3) is installed at the front end of the tool body (2), characterized in that, Also include the chip removal mechanism (4) and chip breaking mechanism (5), wherein: The shank (1), the blade body (2), the blade head (3) are provided with cooling liquid holes (11) which are communicated with each other, the blade head (3) is provided with a plurality of chip grooves (31), the blade body (2) is provided with a plurality of chip removal grooves (21) corresponding to the chip grooves (31); The chip removal mechanism (4) includes a plurality of liquid outlet holes (41) arranged on the outer wall of the blade head (3), and the liquid outlet holes (41) are communicated with the cooling liquid holes (11); The chip breaking mechanism (5) includes a plurality of chip breaking knives (51) installed in the chip removal grooves (21).

2. A device for automatic chip breaking and evacuation for a deep hole drilling tool according to claim 1, characterized in that: The chip removal groove (21) is an arc-shaped slot and extends to the connection between the blade body (2) and the shank (1), and the blade body (2) is also provided with a plurality of equidistantly arranged ring-shaped connection grooves (22), and different chip removal grooves (21) are connected through the connection grooves (22).

3. A device for automatic chip breaking and evacuation for a deep hole drilling tool according to claim 2, characterized in that: The chip removal groove (21) and the chip groove (31) are provided with four, the chip removal groove (21) and the chip groove (31) are arranged in a 90° angle around the outer wall of the blade head (3) and the blade body (2).

4. A device for automatic chip breaking and evacuation for a deep hole drilling tool according to claim 3, characterized in that: The chip breaking knife (51) is fixed at the middle position of the chip removal groove (21) and transversely across the whole blade body (2), and the chip breaking knife (51) is provided with a plurality of staggered chip breaking grooves (52).

5. The automatic chip breaking and removing device of a deep hole drilling tool according to claim 1, characterized in that: The chip removal mechanism (4) further includes a liquid outlet pipe (42) installed in the chip removal groove (21), the liquid outlet pipe (42) is connected with the cooling liquid hole (11) through a connecting pipe (43), and the pipe opening of the liquid outlet pipe (42) faces the shank (1) direction.

6. A device for automatic chip breaking and evacuation for a deep hole drilling tool according to claim 5, characterized in that: The chip removal groove (21) is also provided with a flow guide table (44), and the flow guide table (44) is an arc-shaped table with the width increasing towards the shank (1) direction.

7. A device for automatic chip breaking and evacuation for a deep hole drilling tool according to claim 6, characterized in that: The liquid outlet pipes (42) are symmetrically arranged in pairs, and the side of the flow guide table (44) facing the shank (1) is symmetrically provided with a mounting hole (441), and the liquid outlet pipes (42) are embeddedly installed in the mounting hole (441).

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