Chip breaking drill block

Abstract

The utility model relates to a chip breaking drill block which is applied to the field of tool machining and comprises a tool bit installed on a tool bar, two cutting edges are arranged on the tool bit, and a plurality of chip breaking grooves are formed in the two cutting edges respectively. The drill bit has the technical effects that when the drill bit is used for coping with materials difficult to cut, the drill bit rotates at a high speed, the drill point makes contact with the machining face of a workpiece firstly to achieve the centering effect, the cutting edge, the chisel edge, the chip breaker groove and the rear tool face form the cutting part of the drill bit, the machined materials are cut through the chip breaker groove in the drill bit, large chip blocks of the machined materials are subjected to chip breaking, and the machining efficiency of the machined materials is improved. Scrap accumulation is relieved, chips generated in the machining process are discharged from the chip containing groove to the chip discharging groove, the possibility that the chips interfere with machining of the hole wall of the workpiece is reduced, and the chip breaking groove improves the machining quality and efficiency in large-allowance machining.

Description

Technical Field

[0001] The present application relates to the technical field of tool processing, and in particular to a chip breaking drill block. Background Art

[0002] A drill block is a metal processing tool, usually mounted on a tool bar for hole processing, including perforating, tapping, threading, etc. It can be used to drill materials such as steel, aluminum, copper, stainless steel, and is widely used in mechanical manufacturing, electronics, automobiles, and construction.

[0003] Announcement No. CN217253079U discloses a new type of drill block, including a cutter head and a cutter rod. The top of the cutter rod is provided with an installation notch, and the bottom end of the installation notch is provided with a fixing groove downwardly. The lower end of the cutter head is provided with a fixing block that cooperates with the fixing groove. Guide blocks are also provided on both sides of the fixing block. A guide groove corresponding to the guide strip is opened on the inner wall of the fixing groove, and a first threaded hole is opened outward on one side of the fixing groove. A connecting hole corresponding to the first threaded hole is provided on the outer wall of the fixing block, and a first screw is connected to the first threaded hole and the connecting hole. The bottom of the fixing groove is also provided with a clamping component for fitting the notch at the bottom of the fixing block.

[0004] When the drill block is processing difficult-to-cut materials, the cutting end face is difficult to handle the chips generated after processing. The chips may be large and difficult to be discharged in time, causing chip accumulation and interfering with the processing of the workpiece hole wall, thereby affecting the processing quality and efficiency. Summary of the invention

[0005] In order to help solve the problem that the above-mentioned drill block is difficult to handle the chip blocks generated after processing, causing chip accumulation and interfering with the processing of the workpiece hole wall, the present application provides a chip breaking drill block, which adopts the following technical solution: it includes a cutter head mounted on a tool rod, the cutter head is provided with two cutting edges, and the two cutting edges are respectively provided with a plurality of chip breaking grooves.

[0006] In a specific implementation manner, the bottoms of several of the chip breaking grooves are arc-shaped.

[0007] In a specific possible implementation manner, a chip removal groove is provided on the cutter head along the outer peripheral wall, and the chip removal groove is spirally arranged along the central axis of the cutter head.

[0008] In a specific possible implementation manner, a drill tip is provided between the two cutting edges.

[0009] In a specific possible implementation manner, a chip groove is provided on the inclined wall of the drill tip, and the groove wall of the chip groove and the drill tip form a chip edge.

[0010] In a specific possible implementation manner, the chip containing groove is communicated with the chip discharging groove.

[0011] In a specific possible implementation manner, a chisel edge is provided on the drill tip.

[0012] In a specific possible implementation manner, a relief surface is provided on the drill tip.

[0013] In a specific embodiment, the cutter head is made of cemented carbide.

[0014] In a specific embodiment, the cutter head is entirely provided with a titanium carbide coating.

[0015] In summary, the present application has the following beneficial technical effects: when dealing with difficult-to-cut materials, the drill block rotates at high speed, and the drill tip first contacts the machined surface of the workpiece to play a centering role. The cutting edge, transverse edge, chip breaker and back face form the cutting part of the drill block. The chip breaker on the drill block cuts the machined material, so that larger chip blocks of the machined material are broken, alleviating the accumulation of chips. The chips generated during the machining process are discharged from the chip containing groove to the chip discharge groove, reducing the possibility of chips interfering with the machining of the workpiece hole wall. The chip breaker improves the machining quality and efficiency in large-addition machining. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0017] Reference numerals: 1. tool head; 2. cutting edge; 3. chip breaker; 4. chip removal groove; 5. drill tip; 6. chip groove; 7. chip edge; 8. chisel edge; 9. back face. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1 This application is described in further detail.

[0019] The embodiment of the present application discloses a chip breaking drill block.

[0020] Reference Figure 1 The chip breaking drill block includes a cutter head 1 mounted on a cutter bar. The cutter head 1 is made of cemented carbide, which has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance and corrosion resistance. The cutter head 1 is provided with a titanium carbide coating as a whole. The titanium carbide coating has the characteristics of being smooth, dense, high hardness, high temperature resistance, wear resistance, oxidation resistance and strong adhesion, which improves the wear resistance of the cutter head 1 and the service life of the drill block.

[0021] Reference Figure 1The cutter head 1 is provided with two cutting edges 2, and the two cutting edges 2 are respectively provided with a plurality of chip breaker grooves 3. The number of chip breaker grooves 3 can be adjusted according to actual use conditions, and the gaps between the plurality of chip breaker grooves 3 can be set to be equal or unequal. The groove bottoms of the plurality of chip breaker grooves 3 are all arc-shaped, and the arc shape plays the role of arc transition, which reduces the possibility of chip accumulation and facilitates smooth chip removal.

[0022] Therefore, when dealing with difficult-to-cut materials, the drill block rotates at high speed, and the chip breaker groove 3 on the drill block cuts the processed material, so that larger chips are broken, the accumulation of chips is alleviated, and the possibility of interference with the processed surface is reduced. The chip breaker groove 3 improves the processing quality and efficiency in large-amount processing.

[0023] Reference Figure 1 A drill tip 5 is arranged between the two cutting edges 2. The drill tip 5 first contacts the machined surface of the workpiece to play a centering role. A chisel edge 8 is arranged on the drill tip 5. The chisel edge 8 processes the machined surface. A flank face 9 is arranged on the drill tip 5. The flank face 9 reduces the friction between the drill block and the workpiece during cutting and increases the service life of the drill block. The cutting edge 2, the chisel edge 8, the chip breaker 3 and the flank face 9 form the cutting part of the drill block.

[0024] Reference Figure 1 A chip groove 4 is provided on the outer peripheral wall of the cutter head 1, and the chip groove 4 is spirally arranged along the central axis of the cutter head 1. The chips generated during the machining process can be discharged along the chip groove 4, which effectively reduces the accumulation of chips and reduces the possibility of chips interfering with the machining of the workpiece hole wall. A chip groove 6 is provided on the inclined wall of the drill tip 5, and the groove wall of the chip groove 6 and the drill tip 5 form a chip edge 7, which plays a role in assisting cutting, and the chip groove 6 is connected to the chip groove 4. Therefore, the chips generated during the machining process are discharged from the chip groove 6 to the chip groove 4, and the chip groove 6 guides the chips. The chip edge 7 assists the cutting edge 2 and the chisel edge 8 in cutting, which effectively reduces the accumulation of chips and reduces the possibility of chips interfering with the machining of the workpiece hole wall.

[0025] The implementation principle of the embodiment of the present application is: when dealing with difficult-to-cut materials, the drill block rotates at high speed, and the drill tip 5 first contacts the machined surface of the workpiece to play a centering role. The cutting edge 2, the transverse edge 8, the chip breaker groove 3 and the back tool face 9 form the cutting part of the drill block. The chip breaker groove 3 on the drill block cuts the machined material so that larger chip blocks of the machined material are broken, thereby alleviating the accumulation of chips. The chips generated during the machining process are discharged from the chip containing groove 6 to the chip discharge groove 4, reducing the possibility of chips interfering with the machining of the workpiece hole wall. The chip breaker groove 3 improves the machining quality and efficiency in large-residue machining.

[0026] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A chip breaking drill block, characterized in that: The invention comprises a cutter head (1) mounted on a cutter rod, wherein the cutter head (1) is provided with two cutting edges (2), and the two cutting edges (2) are respectively provided with a plurality of chip breaking grooves (3).

2. The chip breaking drill block according to claim 1, characterized in that: The groove bottoms of the plurality of chip breaking grooves (3) are all arc-shaped.

3. The chip breaking drill block according to claim 1, characterized in that: The cutter head (1) is provided with a chip removal groove (4) along the outer peripheral wall, and the chip removal groove (4) is spirally arranged along the central axis of the cutter head (1).

4. The chip breaking drill block according to claim 3, characterized in that: A drill tip (5) is provided between the two cutting edges (2).

5. The chip breaking drill block according to claim 4, characterized in that: A chip groove (6) is provided on the inclined wall of the drill tip (5), and the groove wall of the chip groove (6) and the drill tip (5) form a chip edge (7).

6. The chip breaking drill block according to claim 5, characterized in that: The chip containing groove (6) is communicated with the chip discharging groove (4).

7. The chip breaking drill block according to claim 6, characterized in that: The drill tip (5) is provided with a chisel edge (8).

8. The chip breaking drill block according to claim 4, characterized in that: The drill tip (5) is provided with a flank surface (9).

9. The chip breaking drill block according to claim 1, characterized in that: The cutter head (1) is made of hard alloy.

10. The chip breaking drill block according to claim 1, characterized in that: The cutter head (1) is entirely provided with a titanium carbide coating.

Images