Cutting tool with chip removal function

Abstract

The utility model provides a cutting tool which comprises a cutting blade which comprises an upper surface and a cutting edge arranged on the edge of the upper surface. The cutter bar comprises a cutter bar side surface, a blade groove formed in the near end part, and a first chip pocket and a second chip pocket which are respectively formed in the cutter bar side surface; the cutter bar side face comprises an upper side face, a front side face and a rear side face, the front side face and the rear side face are arranged on the two sides of the upper side face respectively, and the first chip containing groove and the second chip containing groove extend towards the far end to the rear side face and the front side face respectively. Wherein the cutting blade is mounted in the blade groove, so that the cutting edge protrudes outwards relative to the outer surface of the cutter bar; the groove bottom of the front end of the first chip containing groove is connected with the side wall of the far end of the blade groove, the front end of the second chip containing groove intersects with the front end of the first chip containing groove at the position close to the blade groove, and the area of the first chip containing groove is larger than that of the second chip containing groove. The utility model aims to provide the cutting tool which is smooth in chip removal.

Description

Technical Field

[0001] The present invention relates to a cutting tool, and particularly to a cutting tool with chip flutes. Background Art

[0002] In machining, internal diameter machining is often in a semi-closed or closed state. In this case, under the action of the cooling water pressure during cutting, the chips generated during cutting are washed to the bottom of the hole, which is likely to cause chip accumulation and easily damage the tool tip. Patent document CN102066026B discloses a cutting blade and a tool shank. The cutting blade has: an upper surface, a lower surface, a side surface, and a cutting edge located at the intersection of the upper surface and the side surface. The tool shank has a mounting portion at the front end, and the cutting blade is mounted on the mounting portion in such a way that the cutting edge protrudes outward from the outer peripheral surface of the tool shank. The lower end of the front side edge portion of the first wall surface is located lower than the cutting edge and the rear end side end portion of the cutting blade, and is connected to the side surface at the rear end side in the mounting portion. Due to the formation of an intersection cutting edge between the two chip flutes and the intersection cutting edge being located between the mounting portions, the chips are likely to rebound and form chip accumulation when flowing through the intersection cutting edge, and the smooth flow of chips cannot be ensured. Summary of the Invention

[0003] Based on this, the utility model aims to overcome the defects of the prior art and provide a cutting tool with smooth chip evacuation.

[0004] A cutting tool with chip evacuation function includes:

[0005] A cutting blade, including an upper surface and a cutting edge provided at the edge of the upper surface;

[0006] A tool shank, including a tool shank side surface, a blade groove provided at the proximal end, and a first chip flute and a second chip flute respectively provided on the tool shank side surface; the tool shank side surface includes an upper side surface, and a front side surface and a rear side surface respectively provided on both sides of the upper side surface. The first chip flute and the second chip flute respectively extend distally to the rear side surface and the front side surface;

[0007] Wherein, the cutting blade is mounted in the blade groove such that the cutting edge protrudes outward relative to the outer surface of the tool shank; the front end groove bottom of the first chip flute is connected to the distal side wall of the blade groove, the front end of the second chip flute intersects with the front end of the first chip flute near the blade groove, and the area of the first chip flute is larger than the area of the second chip flute.

[0008] Further, the front end of the second chip flute intersects with the front end of the first chip flute near the blade groove to form an intersection cutting edge.

[0009] Further, the connection between the front end of the first chip flute and the blade groove is lower than the upper surface of the cutting blade.

[0010] Furthermore, there is an acute angle inclination between the bottom surface of the blade groove and the upper side surface of the tool shank.

[0011] Furthermore, the angle range of the acute angle inclination is 10° - 15°. Preferably, the angle range of the acute angle inclination is 12° - 13°.

[0012] Furthermore, the upper edge of the side wall of the blade groove is lower than the upper surface of the cutting blade.

[0013] Furthermore, the first chip pocket and the second chip pocket extend towards the distal end and gradually contract.

[0014] Furthermore, the cutting blade includes a fastening hole penetrating through the upper and lower surfaces of the cutting blade for a fastener to pass through and fix the cutting blade to the head of the tool shank.

[0015] Furthermore, the front end of the second chip pocket is not lower than the upper surface of the cutting blade.

[0016] The advantages of this application compared with the prior art are as follows: The blade of the present invention has two chip pockets. The front end of the first chip pocket is connected to the blade groove, and the area of the first chip pocket is larger than that of the second chip pocket. When the cutting tool performs workpiece processing operations, the chips generated at the cutting edge flow towards the upper surface of the cutting blade along with the high-pressure coolant. Most of the chips flow out with the coolant through the first chip pocket, and a small part of the chips flow out with the coolant through the second chip pocket. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of a cutting tool with a chip removal function according to an embodiment of the present application;

[0018] Figure 2 is an exploded view of a cutting tool with a chip removal function according to an embodiment of the present application;

[0019] Figure 3 is a side view of a cutting tool with a chip removal function according to an embodiment of the present application;

[0020] Figure 4 is Figure 1 a partial enlarged view of area A (the head of the tool shank) in

[0021] Figure 5 is a structural schematic diagram of a cutting tool with a chip removal function according to an embodiment of the present application as viewed from the proximal end;

[0022] Wherein: 3, tool shank; 1, cutting blade; 14, upper surface; 15, lower surface; 16, blade side surface; 17, cutting edge; 18, proximal end; 19, distal end; 20, tool shank side surface; 4, first chip pocket; 5, second chip pocket; 9, front end of the first chip pocket; 10, rear end of the first chip pocket; 11, front end of the second chip pocket; 12, rear end of the second chip pocket; 2, blade groove; 22, bottom surface of the blade groove; 21, upper side surface; 7, front side surface; 6, rear side surface; 13, intersecting edge; 8, distal side wall of the blade groove. Detailed implementation mode

[0023] The following uses specific specific examples to illustrate the implementation modes of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0024] As Figures 1-5 shown, a cutting tool with a chip removal function in an embodiment of the present application includes a tool shank 3 and a cutting blade 1 mounted on the tool shank 3.

[0025] The cutting blade 1 includes an upper surface 14 and a lower surface 15 arranged oppositely, and a blade side surface 16 extending between the upper surface 14 and the lower surface 15. The upper surface 14 intersects with the blade side surface 16 to form a cutting edge 17.

[0026] The tool shank 3 includes a proximal end 18, a distal end 19 and a tool shank side surface 20, and a first chip pocket 4 and a second chip pocket 5 respectively arranged on the tool shank side surface 20. The proximal end 18 is recessed to form a blade groove 2; the tool shank side surface 20 includes an upper side surface 21, and a front side surface 7 and a rear side surface 6 respectively arranged on both sides of the upper side surface 21. The first chip pocket 4 and the second chip pocket 5 respectively extend distally to the rear side surface 6 and the front side surface 7. In the present application, with the axis of the tool shank 3 as the reference system, the side close to the blade groove 2 where the cutting blade 1 is installed is the proximal, and the side far from the blade groove 2 where the cutting blade 1 is installed is the distal. Respectively arranged on both sides of the upper side surface 21 means on both sides in the axial direction of the tool shank 3. Or rather, the front side surface 7, the upper side surface 21 and the rear side surface 6 are arranged circumferentially around the tool shank side surface 20.

[0027] Among them, the cutting blade 1 is installed in the blade groove 2 such that the cutting edge 17 protrudes outward relative to the outer surface of the tool shank 3; the bottom surface 9 of the front end of the first chip pocket is connected to the distal side wall 8 of the blade groove, and the front end 11 of the second chip pocket intersects with the front end 9 of the first chip pocket near the blade groove 2, and the area of the first chip pocket 4 is larger than the area of the second chip pocket 5 to accommodate more chips and coolant. The protrusion of the cutting edge 17 described above protrudes outward from the proximal end of the blade groove 2 and the side where the second chip pocket 5 is provided.

[0028] The cutting blade 1 is generally in the shape of a cuboid or a cube or a square frustum approximately in the shape of a cube, and the upper surface 14 and the lower surface 15 are basically regular quadrilaterals.

[0029] The upper surface 14 and the lower surface 15 of the cutting blade 1 are flat surfaces and parallel to each other.

[0030] The upper side surface 21 of the tool shank 3 is a flat surface.

[0031] The upper side surface 21 of the tool shank 3 is higher than the blade groove 2.

[0032] The front end 11 of the second chip pocket intersects with the front end 9 of the first chip pocket near the blade groove 2 to form an intersection edge 13. The intersection edge 13 can separate the first chip pocket 4 and the second chip pocket 5, and only the first chip pocket 4 communicates with the blade groove 2, so that the intersection edge can block and guide most of the chips and coolant to flow out from the first chip pocket 4, and only a small amount of chips and coolant flow out from the second chip pocket 5.

[0033] The connection between the front end 9 of the first chip pocket and the blade groove 2 is lower than the upper surface 14 of the cutting blade 1, which can enable most of the chips to flow into the first chip pocket 4 unobstructed.

[0034] The first chip pocket 4 slopes and gradually descends from its rear end 10 to the front end towards the blade groove 2 until the front end 9 of the first chip pocket is connected to the distal side wall 8 of the blade groove.

[0035] The rear end 10 of the first chip pocket 4 and the rear end 12 of the second chip pocket 5 respectively extend to the rear side surface 6 and the front side surface 7.

[0036] The first chip pocket 4 and the second chip pocket 5 extend towards the distal end and gradually contract.

[0037] The first chip pocket 4 and the second chip pocket 5 intersect only at the intersection edge 13.

[0038] There is an acute angle inclination Y between the bottom surface 22 of the blade groove and the upper side surface 21 of the tool shank 3. That is, in the installed state, the cutting blade 1 is in an inclined state, which can effectively prevent the bottom or side of the cutting tool from touching the workpiece and causing damage to the cutting tool. Preferably, the angle range of the acute angle inclination is 10° - 15°.

[0039] The upper edge of the side wall of the blade groove 2 is lower than the upper surface 14 of the cutting blade 1 and higher than the lower surface 15 of the cutting blade 1, which can effectively prevent the cutting edge 17 from contacting the side wall of the blade groove 2 and causing damage to the cutting edge 17.

[0040] The cutting blade 1 further includes a fastening hole penetrating through the upper surface 14 and the lower surface 15 of the cutting blade 1 for a fastener to pass through and fix the cutting blade 1 to the head of the tool bar 3.

[0041] The front end 11 of the second chip pocket is not lower than the upper surface 14 of the cutting blade 1 to more effectively discharge chips and cutting fluid.

[0042] As described above, only the preferred specific embodiments of the present invention are provided, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A cutting tool with chip removal function, characterized in that: include: A cutting blade, comprising an upper surface and a cutting edge disposed at an edge of the upper surface; A tool bar, comprising a tool bar side surface and a blade groove arranged at a proximal end, and a first chip groove and a second chip groove respectively arranged on the tool bar side surface; the tool bar side surface comprises an upper side surface, and a front side surface and a rear side surface respectively arranged on both sides of the upper side surface, and the first chip groove and the second chip groove respectively extend to the rear side surface and the front side surface toward the distal end; In which, the cutting blade is installed in the blade groove so that the cutting edge protrudes outward relative to the outer surface of the tool rod; the front end groove bottom of the first chip groove is connected to the distal side wall of the blade groove, the front end of the second chip groove intersects with the front end of the first chip groove near the blade groove, and the area of ​​the first chip groove is larger than the area of ​​the second chip groove.

2. A cutting tool with chip removal function as claimed in claim 1, characterized in that: The front end of the second chip groove intersects with the front end of the first chip groove near the insert groove to form an intersection edge.

3. A cutting tool with chip removal function as claimed in claim 1, characterized in that: The junction between the front end of the first chip groove and the insert groove is lower than the upper surface of the cutting insert.

4. A cutting tool with chip removal function as claimed in claim 1, characterized in that: The front end of the second chip groove is not lower than the upper surface of the cutting insert.

5. A cutting tool with chip removal function as claimed in claim 1, characterized in that: There is an acute inclination angle between the bottom surface of the blade groove and the upper side surface of the blade rod.

6. A cutting tool with chip removal function as claimed in claim 5, characterized in that: The acute inclination angle ranges from 10° to 15°.

7. A cutting tool with chip removal function as claimed in claim 1, characterized in that: An upper edge of a side wall of the insert slot is lower than an upper surface of the cutting insert.

8. A cutting tool with chip removal function as claimed in claim 1, characterized in that: The first chip groove and the second chip groove extend toward the distal end and gradually shrink.

9. A cutting tool with chip removal function according to any one of claims 1 to 8, characterized in that: The cutting blade comprises a fastening hole penetrating through the upper and lower surfaces of the cutting blade, which is used for a fastener to pass through and fix the cutting blade to the head of the tool bar.

Images