A spherical pocket machining tool

Abstract

A spherical surface machining tool includes a tool body, several cutting blades, and several elastic supports. The tool body is a cylindrical structure with an open top. Several cutting blade receiving grooves are spaced apart along the circumferential direction on the top of the tool body, and the cutting blades are correspondingly installed in each cutting blade receiving groove. On the circumferential direction of the tool body, a chip removal groove and an elastic support receiving hole are respectively formed on both sides of each cutting blade receiving groove. The chip removal groove is spirally formed on the outer surface of the tool body and penetrates the top and bottom end faces of the tool body. The cutting edge of each cutting blade is higher than the top surface of the tool body and extends into the area where the chip removal groove is formed on the top of the tool body, so that the chip removal groove is located below the cutting edge. The elastic supports are disposed in the elastic support receiving holes. When subjected to external force, the elastic supports retract into the elastic support receiving holes along the axis of the tool body; when there is no external force, they extend out of the top surface of the tool body along the axis of the tool body. This invention can achieve centering when machining spherical surfaces and can accommodate and remove chips or waste material.

Description

Technical Field

[0001] This utility model relates to the field of cutting tools, and in particular to a spherical hole machining tool. Background Technology

[0002] In oil pipeline transportation, ball valves, as critical control components, are prone to malfunction due to harsh working conditions, requiring drilling to unclog the pipeline. This operation is typically carried out by a small-power motor driving a hole-making tool into the pipeline. The tool is machining the hollow ball valve shell, and the resulting chips or debris must be collected and removed during the operation.

[0003] However, the initial machining part of the ball valve is a spherical surface. Existing hole machining tools lack a centering structure, making it difficult to operate stably when cutting spherical surfaces and unable to effectively accommodate the material falling off, resulting in low machining efficiency and poor results, which cannot meet the needs of actual applications.

[0004] Therefore, in order to address the above problems, it is particularly necessary to design a new type of cutting tool that can achieve centering when machining spherical surfaces and can accommodate and remove chips or scrap. Utility Model Content

[0005] The purpose of this utility model is to provide a spherical surface machining tool that can achieve centering when machining a spherical surface and can accommodate and remove chips or waste material, in order to address the problems mentioned above.

[0006] The technical solution adopted in this utility model is as follows: A spherical surface machining tool includes a tool body, several cutting blades, and several elastic supports. The tool body is a cylindrical structure with an open top. Several cutting blade receiving grooves are spaced apart along the circumferential direction on the top of the tool body, and the cutting blades are correspondingly installed in each cutting blade receiving groove. On the circumferential direction of the tool body, a chip removal groove and an elastic support receiving hole are respectively formed on both sides of each cutting blade receiving groove. The chip removal groove is spirally formed on the outer surface of the tool body and penetrates the top and bottom end faces of the tool body. The cutting edge of each cutting blade is higher than the top surface of the tool body and extends into the area where the chip removal groove is formed on the top of the tool body, so that the chip removal groove is located below the cutting edge. The elastic supports are disposed in the elastic support receiving holes. When the elastic supports are subjected to external force, they retract into the elastic support receiving holes along the axial direction of the tool body. When there is no external force, they extend out of the top surface of the tool body along the axial direction of the tool body.

[0007] Furthermore, in the circumferential direction, the cutter, the elastic support, and the chip removal groove are evenly spaced.

[0008] Furthermore, the elastic support includes a support and an elastic element, both of which are disposed within the elastic support receiving hole. The support is located above the elastic element, the lower end of the elastic element contacts the bottom of the elastic support receiving hole, and the upper end of the elastic element contacts the lower end of the support.

[0009] Furthermore, the upper end of the support member is spherical.

[0010] Furthermore, a chamfer is provided between the top surface of the cutter body and the inner wall, so that a conical guide surface is formed inside the cutter body where the chamfer is located, and the chip removal groove penetrates the conical guide surface.

[0011] Furthermore, the top of the cutter receiving groove is open and extends through the inner and outer walls of the cutter body.

[0012] Furthermore, the cutting blade includes a front cutting face, a rear cutting face, an outer cutting face, an inner cutting face, an outer top cutting face, and an inner top cutting face; The cutter is a prism formed by a front cutter face, a rear cutter face, an outer cutter face, and an inner cutter face, and a cutter chamfer is provided at the connection between the front cutter face and the outer cutter face; When the cutter is placed in the cutter receiving groove, the front cutter face faces the chip removal groove, the rear cutter face faces the elastic support, the outer cutter face is located outside the cutter body, and the inner cutter face is located inside the cutter body. The outer top cutting face is connected to the top edge of the front cutting face, the rear cutting face, and the outer cutting face, and the inner top cutting face is connected to the top edge of the front cutting face, the rear cutting face, and the inner cutting face. The outer top cutting surface and the inner top cutting surface are connected. The outer top cutting surface is parallel to the top surface of the cutter body or the outer top cutting surface is an inclined surface, and the outer top cutting surface is inclined to the outside of the cutter body; the inner top cutting surface is an inclined surface, and the inner top cutting surface is inclined to the inside of the cutter body. The junction of the outer top blade, the inner top blade, and the front blade is the cutting edge of the cutting tool.

[0013] Furthermore, a chip-collecting groove is formed on the front cutting surface; the chip-collecting groove is located above the top surface of the cutting tool body.

[0014] Furthermore, a pressure relief hole is provided at the bottom of the blade body.

[0015] Furthermore, a tool clamping shank is provided at the bottom of the tool body, the axis of the tool clamping shank coincides with the axis of the tool body, and the tool clamping shank is used to connect to the machine tool spindle.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: When machining spherical surfaces, the open end of the cutter body contacts the spherical surface, and multiple cutting blades at the top can effectively cut the spherical surface. Multiple elastic support components can extend and retract along the axis of the cutter body, adaptively supporting the spherical surface. This solves the problem of poor stability when cutting spherical surfaces caused by the lack of a centering structure in existing cutters, achieving effective centering during machining and ensuring a smooth cutting process. The chip removal groove can discharge chips, ensuring cutting efficiency. At the same time, the cutter body has a cylindrical structure, allowing chips and waste material to be loaded into the cylinder and easily carried out. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a diagram of the internal structure of the present invention; Figure 3 This is a magnified view of the cutter, elastic support, and chip removal groove. Figure 4 Figure 5 shows the structure of the cutting blade; Figure 6 This is a structural diagram of the elastic support component; In the figure, 1-chip removal groove, 2-cutting blade, 3-elastic support, 4-blade body, 5-blade holder, 6-pressure relief hole, 200-cutting edge, 201-front face, 202-outer face, 203-outer top face, 204-inner top face, 205-chip removal groove, 206-cutting blade chamfer, 207-back face, 301-support, 302-elasticity, 401-conical guide surface. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figures 1-6 As shown, this utility model discloses a spherical surface machining tool, including a tool body 4, several cutting blades 2, and several elastic support members 3. The tool body 4 is a cylindrical structure with an open top. Several cutting blade receiving grooves are spaced apart along the circumferential direction on the top of the tool body 4, and the cutting blades 2 are correspondingly installed in each cutting blade receiving groove. On the circumferential direction of the tool body 4, a chip removal groove 1 and an elastic support member 3 receiving hole are respectively opened on both sides of each cutting blade receiving groove. The chip removal groove 1 is spirally opened on the outer surface of the tool body 4 and penetrates the top end face and bottom end face of the tool body 4. The cutting edge 200 of the cutting blade 2 is higher than the top surface of the tool body 4 and extends into the area where the chip removal groove 1 is opened on the top of the tool body 4, so that the chip removal groove 1 is located below the cutting edge 200. The elastic support members 3 are disposed in the receiving holes of the elastic support members 3. When the elastic support members 3 are subjected to external force, they retract into the receiving holes of the elastic support members 3 along the axial direction of the tool body 4. When there is no external force, they extend out of the top surface of the tool body 4 along the axial direction of the tool body 4.

[0025] Due to the aforementioned structure, when machining a spherical surface, the open end of the cutter body 4 contacts the spherical surface, and the multiple cutting blades 2 at the top can effectively cut the spherical surface. Multiple elastic support members 3 can extend and retract along the axis of the cutter body 4, adaptively supporting the spherical surface. This solves the problem of poor stability when cutting spherical surfaces caused by the lack of a centering structure in existing tools, achieving effective centering during machining and ensuring a smooth cutting process. The chip removal groove 1 can discharge chips, ensuring cutting efficiency. Simultaneously, the cutter body 4 has a cylindrical structure, allowing chips and waste material to be loaded into the cylinder, facilitating their removal.

[0026] Furthermore, in the circumferential direction, the cutter 2, the elastic support 3, and the chip removal groove 1 are evenly spaced.

[0027] Due to the above structure, the cutter 2, the elastic support 3, and the chip removal groove 1 are evenly distributed in the circumferential direction, which not only makes the force on each part of the tool more uniform, further improving the processing stability and ensuring the accuracy of spherical hole opening; but also makes the support force of the elastic support 3 on the spherical surface evenly distributed, ensuring a more reliable centering effect.

[0028] Furthermore, the elastic support 3 includes a support 301 and an elastic element 302. Both the support 301 and the elastic element 302 are disposed within the receiving hole of the elastic support 3. The support 301 is located above the elastic element 302. The lower end of the elastic element 302 contacts the bottom of the receiving hole of the elastic support 3, and the upper end of the elastic element 302 contacts the lower end of the support 301. Figure 6 As shown, the support member 301 is a cylindrical support rod. In specific implementation, the elastic member 302 can be a spring or a rubber column.

[0029] Furthermore, the upper end of the support member 301 is spherical.

[0030] The upper end of the support 301 is spherical, which can better fit with the spherical machined part of the ball valve, improve the centering effect, reduce the offset and shaking during the machining process, and ensure machining accuracy.

[0031] Furthermore, a chamfer is provided between the top surface and the inner wall of the blade body 4, so that a conical guide surface 401 is formed inside the blade body 4 where the chamfer is located, and the chip removal groove 1 penetrates the conical guide surface 401.

[0032] like Figure 1 As shown, the tapered guide surface 401 is tapered, wider at the top and narrower at the bottom. When the spherical surface presses the elastic support 3 completely into the receiving hole of the elastic support 3, the tapered guide surface 401 can support the spherical surface. At the same time, the tapered surface is more conducive to guiding the chips or scrap into the guide cylinder.

[0033] Furthermore, the top of the cutter receiving groove is open and extends through the inner and outer walls of the cutter body 4.

[0034] Since the cutter receiving groove runs through the inner and outer walls of the cutter body 4, it is convenient to select cutters 2 with different radial widths according to actual needs. In specific implementation, the cutter 2 is preferably fixed in the cutter receiving groove by welding.

[0035] Furthermore, such as Figure 3 , 4 As shown in Figure 5, the cutter 2 includes a front blade 201, a rear blade 207, an outer blade 202, an inner blade, an outer top blade 203, and an inner top blade 204; The cutter 2 is a prism formed by a front cutter face 201, a rear cutter face 207, an outer cutter face 202, and an inner cutter face, and a cutter chamfer 206 is provided at the connection between the front cutter face 201 and the outer cutter face 202. When the cutter 2 is placed in the cutter receiving groove, the front cutter face 201 faces the chip removal groove 1, the rear cutter face 207 faces the elastic support 3, the outer cutter face 202 is located outside the cutter body 4, and the inner cutter face is located inside the cutter body 4. The outer top cutting surface 203 is connected to the top edge of the front cutting surface 201, the rear cutting surface 207, and the outer cutting surface 202, and the inner top cutting surface 204 is connected to the top edge of the front cutting surface 201, the rear cutting surface 207, and the inner cutting surface. The outer top cutting surface 203 and the inner top cutting surface 204 are connected. The outer top cutting surface 203 is parallel to the top surface of the cutter body 4 or the outer top cutting surface 203 is an inclined surface, which is inclined to the outside of the cutter body 4. The inner top cutting surface 204 is an inclined surface, which is inclined to the inside of the cutter body 4. The connection point of the outer top cutting surface 203, the inner top cutting surface 204 and the front cutting surface 201 is the cutting edge 200 of the cutter 2.

[0036] In the above structure, the inclined design of the outer ejector face 203 and the inner ejector face 204 can reduce cutting resistance, improve cutting efficiency, and ensure stability during the machining process.

[0037] Furthermore, a chip-collecting groove 205 is provided on the front cutting face 201; the chip-collecting groove 205 is located above the top surface of the cutting body 4.

[0038] Due to the presence of the chip curling groove 205, it can effectively curl the chips, prevent the chips from wrapping around the cutter 2, and facilitate the smooth discharge of chips through the chip discharge groove 1, ensuring the continuity and stability of the cutting process and improving processing efficiency.

[0039] Furthermore, a pressure relief hole 6 is provided at the bottom of the blade body 4.

[0040] The bottom of the cutter body 4 has a pressure relief hole 6, which can balance the pressure generated inside the cutter during processing, avoid excessive pressure affecting cutting stability, relieve the pressure inside the cylinder, and facilitate oblique cutting and material feeding into the cylinder.

[0041] Furthermore, a tool clamping shank 5 is provided at the bottom of the tool body 4, the axis of the tool clamping shank 5 coincides with the axis of the tool body 4, and the tool clamping shank 5 is used to connect to the machine tool spindle.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A spherical hole machining tool, characterized in that: The device includes a blade body (4), several cutting blades (2), and several elastic support members (3). The blade body (4) is a cylindrical structure with an open top. Several cutting blade receiving grooves are spaced apart along the circumferential direction on the top of the blade body (4), and the cutting blades (2) are installed in each cutting blade receiving groove. On the circumferential direction of the blade body (4), chip removal grooves (1) and elastic support member (3) receiving holes are respectively opened on both sides of each cutting blade receiving groove. The chip removal grooves (1) are spirally opened on the outer surface of the blade body (4) and penetrate the blade body (4). The top and bottom faces of the cutter (2) are above the top surface of the cutter body (4) and extend into the area where the chip removal groove (1) is opened on the top of the cutter body (4), so that the chip removal groove (1) is located below the cutting edge (200); the elastic support (3) is set in the receiving hole of the elastic support (3), and when the elastic support (3) is squeezed by external force, it retracts into the receiving hole of the elastic support (3) along the axis of the cutter body (4), and when there is no external force, it extends out of the top surface of the cutter body (4) along the axis of the cutter body (4).

2. The spherical hole machining tool according to claim 1, characterized in that: In the circumferential direction, the cutter (2), the elastic support (3) and the chip removal groove (1) are evenly spaced.

3. The spherical hole machining tool according to claim 1, characterized in that: The elastic support (3) includes a support (301) and an elastic element (302). Both the support (301) and the elastic element (302) are disposed in the receiving hole of the elastic support (3). The support (301) is located above the elastic element (302). The lower end of the elastic element (302) is in contact with the bottom of the receiving hole of the elastic support (3), and the upper end of the elastic element (302) is in contact with the lower end of the support (301).

4. The spherical hole machining tool according to claim 3, characterized in that: The upper end of the support member (301) is spherical.

5. The spherical hole machining tool according to claim 1, characterized in that: A chamfer is provided between the top surface and the inner wall of the blade body (4), so that a conical guide surface (401) is formed inside the blade body (4) where the chamfer is located, and the chip removal groove (1) penetrates the conical guide surface (401).

6. The spherical hole machining tool according to claim 1, characterized in that: The top opening of the cutter receiving groove extends through the inner and outer walls of the cutter body (4).

7. The spherical hole machining tool according to claim 1, characterized in that: The cutting blade (2) includes a front blade (201), a rear blade (207), an outer blade (202), an inner blade, an outer top blade (203), and an inner top blade (204). The cutter (2) is a prism formed by a front cutter face (201), a rear cutter face (207), an outer cutter face (202), and an inner cutter face, and a cutter chamfer (206) is provided at the connection between the front cutter face (201) and the outer cutter face (202). When the cutter (2) is placed in the cutter receiving groove, the front cutter face (201) faces the chip removal groove (1), the rear cutter face (207) faces the elastic support member (3), the outer cutter face (202) is located outside the cutter body (4), and the inner cutter face is located inside the cutter body (4); The outer top cutting surface (203) is connected to the top edge of the front cutting surface (201), the rear cutting surface (207), and the outer cutting surface (202), and the inner top cutting surface (204) is connected to the top edge of the front cutting surface (201), the rear cutting surface (207), and the inner cutting surface; The outer top cutting surface (203) and the inner top cutting surface (204) are connected. The outer top cutting surface (203) is parallel to the top surface of the cutter body (4) or the outer top cutting surface (203) is an inclined surface, which is inclined to the outside of the cutter body (4); the inner top cutting surface (204) is an inclined surface, which is inclined to the inside of the cutter body (4); The connection between the outer top cutting surface (203), the inner top cutting surface (204) and the front cutting surface (201) is the cutting edge (200) of the cutter (2).

8. The spherical hole machining tool according to claim 7, characterized in that: A chip-collecting groove (205) is provided on the front cutting face (201); the chip-collecting groove (205) is located above the top surface of the cutting body (4).

9. The spherical hole machining tool according to claim 1, characterized in that: The blade body (4) has a pressure relief hole (6) at the bottom.

10. The spherical hole machining tool according to claim 1, characterized in that: The bottom of the tool body (4) is provided with a tool clamping handle (5), the axis of the tool clamping handle (5) coincides with the axis of the tool body (4), and the tool clamping handle (5) is used to connect with the machine tool spindle.

Images