Forming ball cutter for hemispherical groove machining

Abstract

The embodiment of the utility model provides a forming ball cutter for hemispherical groove machining, and relates to the technical field of ball cutters. The forming ball cutter for semispherical groove machining comprises a cutter handle and a cutter head, the cutter handle and the cutter head are integrally formed, the cutter head comprises circumferential blade parts and end blade parts, the circumferential blade parts are arranged on the outer side of the cutter head in an irregular spiral shape, opening angles are arranged between the circumferential blade parts, sleeking blades are arranged at the circumferential blade parts in the opening angles, and the sleeking blades extrude a workpiece during reaming cutting, so that the workpiece is prevented from being scratched by the end blade parts. And the surface of the workpiece keeps smooth. The cutter handle and the cutter head are integrally formed, the circumferential cutting edge part and the end cutting edge end are arranged on one cutter head, integral forming of a complex machined part is achieved, machining efficiency and convenience of the machined part are improved, the opening angle is formed in the circumferential cutting edge part, waste chips can be guided conveniently, meanwhile, the 1-degree small arc sleeking edge is designed, in the chambering and cutting process, machining efficiency is improved, and machining efficiency is improved. And the workpiece is extruded to obtain high-quality surface smoothness.

Description

Technical Field

[0001] The utility model relates to the technical field of ball cutters, in particular to a forming ball cutter for processing hemispherical grooves. Background Art

[0002] A ball cutter (or ball end mill) is a cutting tool with a special geometric shape. Its end is hemispherical. This design makes the ball cutter particularly suitable for machining complex three-dimensional surfaces, mold cavities, and other occasions that require high precision and good surface finish.

[0003] According to Chinese patent announcement number: CN217964811 U, a ball cutter is disclosed, including a ball cutter body, the ball cutter body includes a cutter rod, a cleaning mechanism and a cutter head, one end of the cutter rod is fixedly installed with the cutter head, the surface of the cutter rod is fixedly installed with the cleaning mechanism, the cleaning mechanism includes an annular jet plate, an air supply hose, a micro fan and an extraction pipe, the cutter rod includes a fixed column, a connecting frame and a threaded column, the cutter head includes a mounting block and a blade piece, the interior of the fixed column is slidingly connected to the threaded column, and one end of the fixed column is rotatably connected to the connecting frame. The utility model provides a ball cutter, by setting a cleaning mechanism, the micro fan extracts gas from the external environment through the extraction pipe, and the extracted gas is transported to the annular jet plate through the air supply hose. The annular jet plate evenly sprays the gas to clean the debris adhering to the blade piece, thereby preventing the debris from adhering to the surface of the ball cutter, aggravating the friction of the ball cutter, and extending the service life of the ball cutter.

[0004] Traditional processing methods often require multiple clamping and replacement of different tools to complete the processing of a part, which not only increases processing time and cost, but also reduces processing accuracy. Secondly, traditional ball cutters may leave a relatively rough surface during the processing process, especially when performing hole expansion cutting, thereby reducing the processing quality. Utility Model Content

[0005] The purpose of the utility model is to provide a forming ball cutter for processing hemispherical grooves, which can avoid the situation that traditional ball cutters may leave a relatively rough surface during the processing process, especially when performing hole expansion cutting, thereby reducing the processing quality.

[0006] The utility model provides a forming ball cutter for processing hemispherical grooves, comprising a cutter handle and a cutter head, wherein the cutter handle and the cutter head are integrally formed, and the cutter head comprises a peripheral cutting portion and an end cutting portion, wherein the peripheral cutting portion is arranged on the outer side of the cutter head in an irregular spiral shape, an open angle is provided between the peripheral cutting portions, and a wiper blade is provided at the peripheral cutting portion within the open angle, and the wiper blade squeezes the workpiece during hole enlarging and cutting, so that the surface of the workpiece remains smooth.

[0007] Preferably, the circumferential blade portion includes a first circumferential blade and a second circumferential blade, and the first circumferential blade and the second circumferential blade are respectively arranged longitudinally and spirally on the side of the cutter head along the axis on both sides of the cutter head.

[0008] Preferably, the end blade portion includes end blade one, end blade two, end blade three and end blade four, wherein end blade one and end blade two are located at the front end of peripheral blade one, and end blade three and end blade four are located at the front end of peripheral blade two.

[0009] Preferably, the cutting edge of the wiper blade is a 1° arc structure.

[0010] Preferably, the cutter head is made of cemented carbide.

[0011] Preferably, the surfaces of the tool head and the tool handle are coated with a chromium aluminum nitride coating.

[0012] Preferably, the tail end of the shank is provided with a chamfer.

[0013] Preferably, the tail end of the shank is movably connected to a mounting head, and at least four tensioning plates are provided on the outside of the mounting head, and the four tensioning plates are respectively connected to the mounting head via springs.

[0014] Preferably, a gap is left between two adjacent tensioning plates.

[0015] Preferably, an annular plate is provided at one end of the tool handle close to the mounting head, a plurality of limiting grooves are provided on one side of the annular plate, and the protrusions on one side of the tensioning plate are slidably fitted in the limiting grooves.

[0016] Compared with the prior art, the present invention provides a hemispherical groove forming tool.

[0017] 1. The utility model realizes the integrated molding of complex workpieces by integrating the tool handle and the tool head, and the peripheral blade and the end blade on one tool head, thereby improving the processing efficiency and convenience of the workpieces. In addition, an opening angle is provided on the peripheral blade to facilitate the guidance of waste chips. At the same time, a small arc finishing blade of 1° is designed to squeeze the workpiece during the hole expansion and cutting process to obtain a high-quality surface finish.

[0018] 2. The utility model installs a mounting head on the end of the knife handle and utilizes a tensioning plate and a spring to enhance the stability of the knife handle during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the installation structure of an embodiment of the utility model;

[0022] Figure 3 This is a schematic top view of the annular plate structure of an embodiment of the present utility model;

[0023] Figure 4 This is a schematic top view of the cutter head structure according to an embodiment of the present utility model;

[0024] Figure 5 This is a schematic top view of the peripheral blade portion and the broken blade portion structure of an embodiment of the present utility model;

[0025] Figure 6 For the embodiment of the utility model Figure 5 Schematic diagram of the structure at A;

[0026] Figure 7 This is a side view of the handle and blade structure of an embodiment of the present utility model.

[0027] Reference numerals:

[0028] 1. Tool handle; 2. Mounting head; 3. Tension plate; 4. Spring; 5. Annular plate; 6. Limiting groove; 7. Circumferential blade 1; 8. Circumferential blade 2; 9. Opening angle; 10. End blade 1; 11. End blade 2; 12. End blade 3; 13. End blade 4; 14. Wiper blade; 15. Chamfer. DETAILED DESCRIPTION

[0029] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0030] Please refer to Figure 1-Figure 7 The embodiment of the utility model provides a formed ball cutter for processing a hemispherical groove, comprising a tool handle 1 and a tool head, wherein the tool handle 1 and the tool head are formed in one piece.

[0031] The cutter head includes a peripheral blade portion and an end blade portion. The peripheral blade portion is irregularly spirally arranged on the outside of the cutter head. An opening angle 9 is set between the peripheral blade portions. The opening angle 9 is the maximum expansion angle 9 of the ball head tooth gap, which guides the waste chips, facilitates the smooth discharge of the waste chips, and avoids the accumulation of waste chips affecting the processing.

[0032] The peripheral blade portion includes a peripheral blade 1 7 and a peripheral blade 2 8 , and the peripheral blade 1 7 and the peripheral blade 2 8 are respectively arranged longitudinally and spirally on the side of the cutter head along the axis on both sides of the cutter head.

[0033] The end blade portion includes end blade 10, end blade 2 11, end blade 3 12 and end blade 4 13, among which end blade 10 and end blade 2 11 are located at the front end of peripheral blade 1 7, and end blade 3 12 and end blade 4 13 are located at the front end of peripheral blade 2 8, so that the peripheral blade portion and the end blade portion are integrally formed on the same cutter head, effectively improving the processing efficiency.

[0034] At the same time, a wiper blade 14 is provided at the peripheral edge portion within the opening angle 9. The cutting edge of the wiper blade 14 is a 1° arc structure. When reaming and cutting, the wiper blade 14 squeezes the workpiece to keep the surface of the workpiece smooth and reduce or eliminate its peaks, so as to achieve the purpose of being smooth and flat, sharp, strong and durable.

[0035] The cutter head and the handle 1 are made of cemented carbide to ensure the processing hardness of the tool. Of course, the specific materials of the cutter head and the handle 1 can be set according to actual conditions and are not limited to this embodiment.

[0036] The surfaces of the cutter head and the cutter handle 1 are coated with a chromium aluminum nitride coating, which has the advantages of high hardness, good wear resistance, and low friction coefficient.

[0037] The tail end of the tool handle 1 is provided with a chamfer 15 to prevent the sharp corners of the tool from scratching the user or other parts, and has a guiding function, making it easier to install the tool on the machine.

[0038] like Figure 2 As shown, a mounting head 2 is movably connected to the tail end of the knife handle 1, and at least four tensioning plates 3 are provided on the outside of the mounting head 2. The four tensioning plates 3 are respectively connected to the mounting head 2 through springs 4. By using the tensioning plates 3, when the knife handle 1 is installed, the springs 4 and the tensioning plates 3 are squeezed inward, which not only improves the stability of the installation of the knife handle 1, but also protects the knife handle 1.

[0039] A gap is left between two adjacent expansion plates 3 so that the expansion plates 3 can shrink inwardly.

[0040] In addition, an annular plate 5 is provided at one end of the tool handle 1 close to the mounting head 2, and a plurality of limiting grooves 6 are opened on one side of the annular plate 5. The protrusions on one side of the tensioning plate 3 slide in cooperation with the limiting grooves 6, so that the tensioning plate 3 is stable when contracted.

[0041] In summary, the working principle of a forming ball cutter for processing hemispherical grooves in an embodiment of the present invention is: through the integral molding of the tool handle 1 and the tool head, and the peripheral blade and the end blade on one tool head, the integral molding of complex workpieces is achieved, which improves the processing efficiency and convenience of the workpieces, and an opening angle 9 is opened on the peripheral blade to facilitate the guidance of waste chips. At the same time, a small arc finishing blade 14 of 1° is designed to squeeze the workpiece during the hole expansion and cutting process to obtain high-quality surface finish.

[0042] The above is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A ball cutter for processing hemispherical grooves, comprising a handle (1) and a cutter head, characterized in that: The tool handle (1) and the tool head are integrally formed. The tool head comprises a peripheral blade portion and an end blade portion. The peripheral blade portion is arranged in an irregular spiral shape on the outside of the tool head. An opening angle (9) is provided between the peripheral blade portions. A finishing blade (14) is provided at the peripheral blade portion within the opening angle (9). The finishing blade (14) squeezes the workpiece during hole enlarging and cutting, so that the surface of the workpiece remains smooth.

2. The forming ball cutter for hemispherical groove machining according to claim 1, characterized in that: The circumferential blade portion comprises a circumferential blade 1 (7) and a circumferential blade 2 (8), and the circumferential blade 1 (7) and the circumferential blade 2 (8) are respectively arranged on the side of the cutter head in a longitudinal spiral along the axis of both sides of the cutter head.

3. The forming ball cutter for hemispherical groove machining according to claim 2, characterized in that: The end blade portion includes end blade one (10), end blade two (11), end blade three (12) and end blade four (13), wherein end blade one (10) and end blade two (11) are located at the front end of peripheral blade one (7), and end blade three (12) and end blade four (13) are located at the front end of peripheral blade two (8).

4. The forming ball cutter for hemispherical groove machining according to claim 3, characterized in that: The cutting edge of the polishing blade (14) is a 1° arc structure.

5. The forming ball cutter for hemispherical groove machining according to claim 4, characterized in that: The cutter head is made of hard alloy.

6. The forming ball cutter for hemispherical groove machining according to claim 5, characterized in that: The surfaces of the cutter head and the cutter handle (1) are coated with a chromium aluminum nitride coating.

7. The forming ball cutter for machining hemispherical grooves according to claim 6, characterized in that: The tail end of the knife handle (1) is provided with a chamfer (15).

8. The forming ball cutter for hemispherical groove machining according to claim 1, characterized in that: The tail end of the knife handle (1) is movably connected to a mounting head (2), and at least four tensioning plates (3) are provided on the outside of the mounting head (2). The four tensioning plates (3) are respectively connected to the mounting head (2) via springs (4).

9. The forming ball cutter for machining hemispherical grooves according to claim 8, characterized in that: A gap is left between two adjacent tensioning plates (3).

10. The forming ball cutter for machining hemispherical grooves according to claim 9, characterized in that: An annular plate (5) is provided at one end of the knife handle (1) close to the mounting head (2), a plurality of limiting grooves (6) are provided on one side of the annular plate (5), and a protrusion on one side of the tensioning plate (3) is slidably engaged with the limiting grooves (6).

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