ball nose end mill

Abstract

The utility model discloses a ball end mill, including handle, the handle end is connected with processing cutter body, and processing cutter body includes drill type cutter part, and drill type cutter part has four spiral cutter grooves, and the connecting end of four spiral cutter grooves forms the spherical head processing part of spherical surface shape, is provided with cooling liquid flow through hole on the handle, is provided with the cooling liquid outflow hole of intercommunication with cooling liquid flow through hole on spiral cutter groove, forms cooling liquid flow channel self -supporting structure, and four spiral cutter grooves all have cooling liquid outflow hole, form the high -quality cooling formula ball end mill structure of even cooling flow channel integration of perimeter measurement.

Description

Technical Field

[0001] This utility model relates to precision machining technology, and in particular to cutting tools used in precision machining, specifically a ball end mill. Background Technology

[0002] Some products have assembly and positioning areas located in narrow spaces, such as deep grooves. During processing, the assembly surface needs to be machined. However, in narrow areas like deep grooves, proper cooling cannot be achieved during processing, which in turn cannot guarantee the processing quality and also affects the service life of the tool.

[0003] Therefore, it is necessary to provide a ball end mill to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a ball end mill.

[0005] The technical solution is as follows:

[0006] A ball end mill includes a shank, with a machining body connected to the end of the shank. The machining body includes a drill-shaped cutting section with four helical flutes, the connecting ends of which form a spherical ball end machining section. The shank has a coolant flow hole, and the helical flutes have coolant outlet holes communicating with the coolant flow hole, forming a self-supporting coolant flow channel structure. Each of the four helical flutes has a coolant outlet hole, forming a high-quality cooled ball end mill structure with a uniform circumferential cooling flow channel.

[0007] Furthermore, the diameter of the coolant flow hole is 10-15% of the tool holder diameter.

[0008] Furthermore, the diameter of the coolant outlet hole is 30-45% of the diameter of the coolant flow hole.

[0009] Furthermore, the outlet of the coolant outflow hole is located at the end of the spiral cutter groove.

[0010] Furthermore, the ball head machining section includes a gently sloping spherical surface at the center and spherical extended machining surfaces on both sides of the gently sloping spherical surface.

[0011] Furthermore, the machining tool body also has a tool body extension connector.

[0012] Furthermore, the tool body extension connector is connected to the tool holder via a gradually tapering slope.

[0013] Furthermore, the slope of a gradually narrowing slope is 25-40°.

[0014] Compared with the prior art, this utility model has a high-quality cooling setting with a uniform cooling channel throughout the perimeter. When machining narrow areas, it can introduce coolant to achieve high-quality cooling, ensuring machining quality while also ensuring tool life. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention;

[0016] Figure 2 for Figure 1 A magnified view of a portion of the image. Detailed Implementation

[0017] Example:

[0018] See Figure 1-2 This embodiment illustrates a ball end mill, including a shank 1, with a machining cutter body 100 connected to the end of the shank. The machining cutter body 100 includes a drill-shaped cutter section 2, which has four helical grooves 21, and the connecting ends of the four helical grooves 21 form a spherical ball end machining section 3. The shank 1 is provided with a coolant flow hole 4, and the helical grooves 21 are provided with coolant outlet holes 5 communicating with the coolant flow hole 4, forming a self-supporting coolant flow channel structure. Each of the four helical grooves 21 has a coolant outlet hole 5, forming a high-quality cooling ball end mill structure with a uniform circumferential cooling flow channel.

[0019] The diameter of the coolant flow hole 3 is 10-15% of the diameter of the tool holder 1.

[0020] The diameter of the coolant outlet hole is 30-45% of the diameter of the coolant flow hole.

[0021] The outlet of the coolant outflow hole is located at the end of the spiral cutter groove 21.

[0022] The ball head processing part 3 includes a gently sloping spherical surface 31 located in the middle, and spherical extension processing surfaces 32 provided on both sides of the gently sloping spherical surface 31.

[0023] The machining tool body 100 also has a tool body extension connector 6.

[0024] The blade extension connector 6 is connected to the handle 1 via a gradually narrowing slope 7.

[0025] The slope of the gradually narrowing slope 7 is 25-40°.

[0026] Compared with the prior art, this utility model has a high-quality cooling setting with a uniform cooling channel throughout the perimeter. When machining narrow areas, it can introduce coolant to achieve high-quality cooling, ensuring machining quality while also ensuring tool life.

[0027] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A ball end mill, characterized in that: The tool includes a tool holder, with a machining tool body connected to the end of the tool holder. The machining tool body includes a drill-shaped cutting section with four helical grooves, and the connecting ends of the four helical grooves form a spherical ball end mill. The tool holder is provided with a coolant flow hole, and the helical grooves are provided with coolant outflow holes that communicate with the coolant flow hole, forming a self-supporting coolant flow channel structure. Each of the four helical grooves has a coolant outflow hole, forming a high-quality cooled ball end mill structure with a uniform circumferential cooling flow channel.

2. A ball end mill according to claim 1, characterized in that: The diameter of the coolant flow hole is 10-15% of the tool holder diameter.

3. A ball end mill according to claim 1, characterized in that: The diameter of the coolant outlet hole is 30-45% of the diameter of the coolant flow hole.

4. A ball end mill according to claim 1, characterized in that: The coolant outlet is located at the end of the spiral cutter groove.

5. A ball end mill according to claim 1, characterized in that: The ball head machining section includes a gently sloping spherical surface at the center and spherical extension machining surfaces on both sides of the gently sloping spherical surface.

6. A ball end mill according to any one of claims 1-5, characterized in that: The machining tool body also has a tool body extension connector.

7. A ball end mill according to claim 6, characterized in that: The tool body extension connector is connected to the tool holder via a gradually tapering slope.

8. A ball end mill according to claim 7, characterized in that: The slope of a gradually narrowing slope is 25-40°.

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