A method for machining a series of holes in a spherical head and a clamping device

Abstract

This invention provides a method and clamping device for machining a series of holes in a spherical head, relating to the field of equipment processing technology. The method includes: obtaining the opening positions of the series of holes; determining the positions of support holes on multiple positioning fixtures based on the opening positions and the running pressure of the milling cutter, and then opening the support holes, which mate with support members; determining the gap value between the positioning fixture and the spherical head based on the head radius, the opening positions, and the milling cutter diameter; using support members to pass through the support holes so that the inner surface of the spherical head and the outer surface of the positioning fixture form a gap equal to the gap value; and machining the series of holes in the spherical head using a milling cutter based on the opening positions. The beneficial effects of this invention are: by determining the support hole positions, the support members pass through the support holes to support the thin wall around the opening positions of the series of holes in the thin-walled spherical head, improving the supporting force and pressure resistance of the thin wall around the opening positions, and improving the machining accuracy and efficiency of the series of holes.

Description

Technical Field

[0001] This invention relates to the field of equipment processing technology, and more specifically, to a method and clamping device for processing a series of holes in a spherical end cap. Background Technology

[0002] Spherical heads play a crucial role in engineering, possessing excellent pressure resistance. They are commonly used in high-pressure vessels or pipeline systems to withstand internal pressure, ensuring the sealing and safety performance of the vessel or pipeline system. They are widely used in chemical, petroleum, natural gas, and food processing industries. However, in some specialized applications, spherical heads need to be connected to other equipment and pipelines for coordinated use. This requires the drilling of a series of holes to install devices such as sensors and control units. In these cases, the accuracy of these holes is paramount. If the drilled holes do not match the installed equipment, the sealing and pressure resistance of the spherical head will be compromised, potentially leading to safety issues in system operation.

[0003] Currently, the series of holes on spherical heads are milled layer by layer using small-diameter end mills. However, due to the small diameter and poor rigidity of the milling tool, the milling amount per layer is very small, resulting in extremely low processing efficiency, severely affecting the processing cycle, and causing serious tool wear and increased costs. Furthermore, when machining a series of holes on large-diameter thin-walled (5mm) spherical heads, the pressure applied by the small-diameter end mill is high, making the spherical head susceptible to deformation under the tool pressure. This deformation also affects the position and size of the holes, leading to a decrease in the accuracy of the series of holes. Summary of the Invention

[0004] The problem addressed by this invention is how to improve the accuracy and efficiency of machining a series of holes in large-diameter thin-walled end caps.

[0005] To address the aforementioned problems, this invention provides a method for machining a series of holes in a spherical end cap and a clamping device.

[0006] In a first aspect, the present invention provides a method for machining a series of holes in a spherical end cap, based on a clamping device, the clamping device comprising a positioning fixture, a clamping device, and a support member, the method for machining a series of holes in a spherical end cap comprising:

[0007] Obtain the opening positions of a series of holes, and obtain the positions of multiple support holes on the positioning fixture based on the opening positions and the running pressure of the milling cutter. Open support holes according to the support hole positions, and the support holes cooperate with the support members.

[0008] The gap value between the positioning fixture and the spherical end cap is obtained based on the end cap radius, the opening position, and the milling cutter diameter;

[0009] When the spherical end cap is fixed between the support member and the clamping device, the support member is used to pass through the support hole so that the inner surface of the spherical end cap and the outer surface of the positioning fixture form a gap equal to the gap value. According to the opening position, the spherical end cap is cut with a milling cutter to obtain the series of holes.

[0010] Optionally, the opening position includes the center position of the hole; obtaining the gap value between the positioning fixture and the spherical end cap based on the end cap radius, the opening position, and the milling cutter diameter includes:

[0011] The hole edge position is obtained by summing the hole center position and the radius of the series of holes, and the cutter edge position is obtained by subtracting the hole edge position from the cutter diameter. The origin of the coordinate system is the center of the spherical head, and the projection of the generatrix of the spherical head onto the horizontal plane is the horizontal axis. The hole edge position includes the horizontal coordinate of the edge of the series of holes away from the top center of the spherical head, and the cutter edge position includes the horizontal coordinate of the edge of the cutter close to the top center of the spherical head.

[0012] The milling cutter height is obtained by taking the square root of the difference between the square of the end cap radius and the square of the hole edge position, wherein the milling cutter height includes the height of the final running position of the milling cutter when opening the series of holes;

[0013] The final position of the milling cutter is obtained by taking the square root of the sum of the square of the cutter edge position and the square of the milling cutter height, wherein the final position of the milling cutter includes the abscissa of the final running position of the milling cutter when making the series of holes;

[0014] The gap value is obtained by subtracting the end cap radius from the final position of the milling cutter.

[0015] Optionally, the gap value is obtained by subtracting the end cap radius from the final position of the milling cutter, including:

[0016] The gap value is represented by a first formula, which includes:

[0017]

[0018] Where a represents the gap value, r 封 x represents the radius of the head. 刀 Indicates the position of the blade edge, o 孔 d represents the position of the center of the hole. 刀 The diameter of the milling cutter, r 孔 This indicates the radius of the series of holes.

[0019] Optionally, the series of holes includes the series of holes whose center distance is farthest from the center of the top of the spherical head.

[0020] Optionally, obtaining the positions of the support holes on the multiple positioning fixtures based on the opening position and the running pressure of the milling cutter includes:

[0021] The preset pressure distance is obtained based on the thickness of the spherical end cap and the operating pressure of the milling cutter;

[0022] With the center of the series of holes as the center and the preset pressure distance as the radius, multiple support hole center positions are obtained by evenly distributing them around the series of holes, and the support hole positions are obtained according to the preset support hole radii.

[0023] Optionally, the step of creating the support hole according to the position of the support hole includes:

[0024] A threaded hole is made at the location of the support hole to obtain the support hole.

[0025] Optionally, the step of cutting the spherical head with a milling cutter to obtain the series of holes according to the opening position includes:

[0026] Obtain the generatrix of the spherical end cap corresponding to the series of holes, and divide the opening position along the generatrix to obtain the first position and the second position;

[0027] The lowest and highest points of the first and second positions are obtained respectively, and the milling cutter is used to cut from the lowest point to the highest point.

[0028] In this invention, the positions of support holes on multiple positioning fixtures are determined based on the opening positions and the operating pressure of the milling cutter, and these support holes are then formed to cooperate with the support components. When the spherical end cap is fixed between the support components and the clamping device, a gap equal to a pre-determined gap value is formed between the inner surface of the spherical end cap and the outer surface of the positioning fixture. Then, a series of holes are machined on the spherical end cap using a milling cutter. The support components pass through the support holes to support the thin wall surrounding the opening positions of the series of holes on the thin-walled spherical end cap, effectively improving the supporting force and pressure resistance of the thin wall around the opening positions. This prevents deformation of the thin wall around the series of holes caused by the milling cutter during machining, improving the machining accuracy of the series of holes. Simultaneously, a larger diameter milling cutter can be used, improving machining efficiency while maintaining the machining accuracy of the series of holes. Forming a gap equal to the pre-determined gap value between the inner surface of the spherical end cap and the outer surface of the positioning fixture provides sufficient space for the milling cutter to operate, preventing damage to the positioning fixture and reducing machining costs.

[0029] Secondly, the present invention also provides a clamping device, including a computer-readable storage medium storing a computer program and a processor, wherein when the computer program is read and run by the processor, the method for machining a series of holes in a spherical head as described above is implemented; the clamping device further includes a positioning fixture, a clamping device, and a support member, wherein the positioning fixture is used to open a support hole, the support member is used to pass through the support hole so that the inner surface of the spherical head forms a gap with the outer surface of the positioning fixture, and the clamping device is used in conjunction with the support member to restrict the movement of the spherical head.

[0030] Optionally, the clamping device further includes the positioning shaft, the positioning fixture is an inverted hemisphere that matches the shape of the spherical end cap, and a limiting hole matching the diameter of the positioning shaft is provided at the top center of the positioning fixture, and the positioning shaft is connected to the positioning fixture through the limiting hole;

[0031] When the support member passes through the support hole to form the gap between the inner surface of the spherical head and the outer surface of the positioning fixture, the clamping device passes through the positioning shaft to restrict the movement of the spherical head.

[0032] Optionally, the spherical fixture is integrally formed with the positioning shaft.

[0033] In this invention, by setting up a positioning fixture, a clamping device, and a support member, the inner surface of the spherical head and the outer surface of the positioning fixture are separated by the support member during use, providing space for the milling cutter to operate, avoiding damage to the fixture by the milling cutter, and reducing production. At the same time, the clamping device cooperates with the support member to restrict the movement of the spherical head, increasing the stability of the spherical head during the machining of a series of holes, avoiding vibration during the machining of the spherical head, and improving the accuracy of the position and size of the machining of the series of holes. Attached Figure Description

[0034] Figure 1 This is a schematic flowchart of the spherical end cap series hole processing method according to an embodiment of the present invention;

[0035] Figure 2 A cross-section of the clamping device according to an embodiment of the present invention. Figure 1 ;

[0036] Figure 3 Top view of the clamping device according to an embodiment of the present invention Figure 1 ;

[0037] Figure 4 A cross-section of the clamping device according to an embodiment of the present invention. Figure 2 ;

[0038] Figure 5 Top view of the clamping device according to an embodiment of the present invention Figure 2.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1-Positioning fixture;

[0041] 2-Clamping device;

[0042] 3-Supporting components;

[0043] 4-Spherical head;

[0044] 5-Positioning axis;

[0045] 6-Ring plate. Detailed Implementation

[0046] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0047] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0048] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0049] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0050] It is understood that any part of this application relating to data acquisition or collection has been authorized.

[0051] like Figure 1 As shown, this invention provides a method for machining a series of holes in a spherical head, based on a clamping device. The clamping device includes a positioning jig 1 that matches the shape of the spherical head 4, a clamping device 2, and a support 3. A cross-sectional view of the spherical head 4 after installation is shown in the figure. Figure 2 As shown, the machining methods for the series of holes in the spherical head include:

[0052] Step S1: Obtain the opening position of the series holes, and obtain the position of the support hole on the positioning fixture 1 according to the opening position and the running pressure of the milling cutter. Open the support hole according to the support hole position, and the support hole cooperates with the support member 3.

[0053] Specifically, the opening positions of the series holes are the opening positions of the series holes pre-drilled in the spherical end cap 4, such as... Figure 3 K1, K2, and K3 are shown in the diagram, where the dashed lines represent the projections of the opening positions of the spherical head 4 onto the positioning fixture 1. Because the thin-walled spherical head 4 has a thin wall and weak pressure resistance, directly using a milling cutter to cut a series of holes in the thin-walled spherical head 4 may cause deformation of the head wall at the edges of the holes, affecting the machining effect. In this embodiment, the positions of multiple support holes on the positioning fixture 1 are obtained based on the opening positions and the operating pressure generated by the milling cutter on the spherical head 4 during operation. For example... Figure 3 Support holes A1 and A2 are support holes around series hole K1; support holes A4 and A7 are support holes around series hole K2; and support holes A9 and A8 are support holes around series hole K3. The support holes are used in conjunction with support member 3. Support member 3 passes through the support holes to support the thin wall around the opening position of the series hole of the thin-walled spherical head 4, so as to improve the support force and pressure resistance of the thin wall around the opening position and prevent the milling cutter from causing deformation of the thin wall around it when machining the series hole.

[0054] In addition, while considering improving the support force and pressure resistance of the thin-walled spherical head 4, the stability of the spherical head 4 on the positioning jig 1 may also be taken into account. Therefore, support hole positions are also provided at different locations, such as... Figure 3 Support holes A3, A5, A6, A10, ..., A17 are provided to ensure the stability of the spherical end cap 4 after it is installed on the positioning jig 1.

[0055] Step S2: Obtain the gap value between the positioning fixture 1 and the spherical end cap 4 based on the end cap radius, the opening position, and the milling cutter diameter.

[0056] Specifically, in order to ensure that the positioning fixture 1 is not damaged when the milling cutter is making holes, the gap value between the positioning fixture 1 and the spherical head 4 needs to be obtained based on the head radius, the opening position of the series holes (e.g., the center position and the edge position of the series holes) and the milling cutter diameter. This ensures that the milling cutter can operate freely without damaging the positioning fixture 1 when machining the series holes, thereby improving the service life of the clamping device and reducing production costs.

[0057] Step S3: When the spherical end cap 4 is fixed between the support member 3 and the clamping device 2, the support member 3 passes through the support hole to form a gap between the inner surface of the spherical end cap 4 and the outer surface of the positioning fixture 1, equal to the gap value. Based on the opening position, a milling cutter is used to cut the spherical end cap 4 to obtain the series of holes. It should be noted that the spacing between the inner and outer surfaces is equal at all points.

[0058] In this embodiment, the positions of the support holes on the positioning fixture 1 are determined based on the opening positions and the operating pressure of the milling cutter, and the support holes are then opened to cooperate with the support member 3. When the spherical end cap 4 is fixed between the support member 3 and the clamping device 2, a gap equal to the pre-determined gap value is formed between the inner surface of the spherical end cap 4 and the outer surface of the positioning fixture 1. Then, the milling cutter is used to process a series of holes in the spherical end cap 4. The support member 3 passes through the support holes to support the thin wall around the opening positions of the series holes in the thin-walled spherical end cap 4, effectively improving the support force and pressure resistance of the thin wall around the opening positions, avoiding deformation of the thin wall around the series holes during milling, and improving the accuracy of the series hole processing. At the same time, a milling cutter of a larger diameter can be replaced to improve processing efficiency while ensuring the accuracy of the series hole processing. The gap between the inner surface of the spherical end cap 4 and the outer surface of the positioning fixture 1, equal to the pre-determined gap value, provides a certain amount of space for the milling cutter to operate, avoiding damage to the positioning fixture 1 during milling and reducing processing costs.

[0059] Optionally, such as Figure 4 and Figure 5 As shown, the opening position includes the position of the center of the hole and the position of the center of a series of holes. The origin of the coordinate system is the center point of the top of the spherical head 4 (e.g., ...). Figure 4 Point o in the middle), the projection of the generatrix of the spherical head 4 onto the horizontal plane is the horizontal axis x (e.g., point o in the middle). Figure 5 (The dotted line in the diagram) It should be noted that when calculating the gap value, the series of holes with the farthest center distance from the top center of the spherical end cap 4 are usually used for calculation, such as... Figure 5In the case of K1, at this time, the corresponding generatrix is ​​obtained by connecting the top center of the spherical head 4 with the center of the series of holes. This generatrix is ​​projected onto a horizontal plane to obtain the horizontal axis x. The process of obtaining the gap value between the positioning fixture 1 and the spherical head 4 based on the head radius, the hole position, and the milling cutter diameter includes:

[0060] According to the center position of the hole o 孔 (i.e., the abscissa of the center) and the radius r of the series of holes 孔 The hole edge position x of the series of holes is obtained by construction. 孔 (i.e., the horizontal coordinate of the hole edge), where the radii of the series of holes are as follows: Figure 4 As shown, the hole edge position x 孔 The abscissa of the edge of the series of holes away from the top center of the spherical head 4 is specifically represented as follows:

[0061] x 孔 =o 孔 +r 孔 .

[0062] According to the hole edge position x 孔 and the diameter d of the milling cutter 刀 The difference is used to obtain the position x of the blade edge. 刀 (i.e., the x-coordinate of the tool edge), the position of the tool edge x 刀 Including the horizontal coordinate of the edge of the milling cutter near the center of the top of the spherical head 4, specifically expressed as:

[0063] x 刀 =x 孔 -d 刀 .

[0064] The end cap radius r 封 The square of the value and the position x of the hole edge 孔 The square root of the difference of the squares gives the milling cutter height z. 刀 Milling cutter height z 刀 Including the ordinate of the final running position of the milling cutter when drilling the series of holes, specifically expressed as:

[0065]

[0066] The blade edge position x 刀 The square of the milling cutter height z 刀 The square root of the sum of the squares of the terms is used to obtain the final position r of the milling cutter. 刀 The final position of the milling cutter is r 刀 This includes the x-coordinate of the final running position of the milling cutter when creating the series of holes, specifically expressed as:

[0067]

[0068] The end cap radius r 封 With respect to the final position r of the milling cutter 刀 The difference is taken to obtain the gap value 'a', which is specifically expressed as:

[0069] a = r 封 -r 刀 .

[0070] Integrating the above formulas, we obtain the first formula representing the gap value:

[0071]

[0072] Where a represents the gap value, r 封 x represents the radius of the head. 刀 Indicates the position of the blade edge, o 孔 d represents the position of the center of the hole. 刀 The diameter of the milling cutter, r 孔 This indicates the radius of the series of holes.

[0073] Optionally, obtaining the positions of the support holes on the multiple positioning fixtures 1 based on the opening position and the running pressure of the milling cutter includes:

[0074] The preset pressure distance is obtained based on the thickness of the spherical end cap 4 and the running pressure of the milling cutter;

[0075] Using the center of the series of holes as the center and the preset pressure distance as the radius, multiple support hole center positions are evenly distributed around the series of holes, and the support hole positions are obtained according to the preset support hole radii. The support holes opened according to the support hole positions obtained according to the preset pressure distance are used in conjunction with the support member 3 to maximize the support force of the thin wall around the series of holes, thereby improving the opening accuracy of the series of holes.

[0076] In addition, in this embodiment, there are two support holes around the series hole. For example, there are two support holes A4 and A7 around the series hole K2. However, the number of support holes is not specifically limited and can be determined according to the actual situation.

[0077] Optionally, the step of creating the support hole according to the position of the support hole includes:

[0078] A threaded hole is made at the location of the support hole to obtain the support hole. Correspondingly, the support member 3 is a bolt, so as to adjust different gap values, making the clamping device suitable for spherical heads 4 with different series of hole distributions.

[0079] Optionally, the step of cutting the spherical head 4 with a milling cutter according to the opening position to obtain the series of holes includes:

[0080] Obtain the generatrix of the spherical end cap 4 corresponding to the series of holes, and divide the opening position along the generatrix to obtain the first position and the second position;

[0081] The lowest and highest points of the first and second positions are obtained respectively. Using the milling cutter, the milling is performed from the lowest point to the highest point to avoid tool jamming and improve processing efficiency.

[0082] Secondly, such as Figure 2 As shown, this embodiment of the invention also discloses a clamping device, including a computer-readable storage medium storing a computer program and a processor. When the computer program is read and run by the processor, it implements the spherical head series hole processing method as described in any one of claims 1-7. The clamping device further includes a positioning fixture 1, a clamping device 2, and a support member 3. The positioning fixture 1 is used to open a support hole, and the support member 3 is used to pass through the support hole so that the inner surface of the spherical head 4 forms a gap with the outer surface of the positioning fixture 1. The clamping device 2 is used in conjunction with the support member 3 to restrict the movement of the spherical head 4.

[0083] In this embodiment, by setting up a positioning fixture 1, a clamping device 2, and a support member 3, the support member 3 forms a gap between the inner surface of the spherical end cap 4 and the outer surface of the positioning fixture 1 during use, providing space for the milling cutter to operate, avoiding damage to the fixture by the milling cutter, and reducing production. At the same time, the clamping device 2 cooperates with the support member 3 to restrict the movement of the spherical end cap 4, increasing the stability of the spherical end cap 4 during the machining of a series of holes, avoiding vibration during the machining of the spherical end cap 4, and improving the accuracy of the position and size of the machining of a series of holes.

[0084] Optionally, such as Figure 2 As shown, the clamping device also includes the positioning shaft 5. The positioning fixture 1 is an inverted hemispherical shape that matches the shape of the spherical end cap 4. A limiting hole matching the diameter of the positioning shaft 5 is provided at the top center of the positioning fixture 1. The positioning shaft 5 is connected to the positioning fixture 1 through the limiting hole.

[0085] When the support member 3 passes through the support hole to form the gap between the inner surface of the spherical head 4 and the outer surface of the positioning jig 1, the clamping device 2 passes through the positioning shaft 5 to restrict the movement of the spherical head 4 and increase the stability of the spherical head 4.

[0086] Alternatively, the clamping device 2 can be, for example, a gear structure or a bolt structure, and is installed on the ring plate 6. When facing a spherical head 4 for which a limiting hole cannot be opened, the positioning shaft 5 can be removed, and the clamping device 2 installed on the ring plate 6 can be used to restrict the movement of the spherical head 4.

[0087] Optionally, the spherical jig 1 is integrally formed with the positioning shaft 5.

[0088] The present invention will now describe electronic devices that can serve as servers or clients of the present invention, which are examples of hardware devices that can be applied to various aspects of the present invention. Electronic devices are intended to represent various forms of digital electronic computer devices, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. Electronic devices can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0089] Electronic devices include a computing unit that can perform various appropriate actions and processes based on a computer program stored in read-only memory (ROM) or loaded from a storage unit into random access memory (RAM). The RAM can also store various programs and data required for device operation. The computing unit, ROM, and RAM are interconnected via a bus. Input / output (I / O) interfaces are also connected to the bus.

[0090] Computer systems can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. Client-server relationships are created by computer programs running on the respective computers and having a client-server relationship with each other.

[0091] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc. In this application, the units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of the present invention according to actual needs. Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units can be implemented in hardware or as software functional units.

[0092] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A method for machining a series of holes in a spherical end cap, characterized in that, Based on the clamping device, which includes a positioning fixture, a clamping device, and a support member, the method for machining the series of holes in the spherical end cap includes: Obtain the opening positions of a series of holes, and based on the opening positions and the running pressure of the milling cutter, determine the positions of multiple support holes on the positioning fixture, including: The preset pressure distance is obtained based on the thickness of the spherical head and the running pressure of the milling cutter; With the center of the series of holes as the center and the preset pressure distance as the radius, multiple support hole center positions are obtained by evenly distributing them around the series of holes, and the support hole positions are obtained according to the preset support hole radii. Support holes are made according to the positions of the support holes, and the support holes cooperate with the support members; The gap value between the positioning fixture and the spherical end cap is obtained based on the end cap radius, the opening position, and the milling cutter diameter, including: The opening position includes the center position of the hole. The hole edge position of the series of holes is obtained by summing the hole center position and the radius of the series of holes. The cutter edge position is obtained by subtracting the hole edge position from the cutter diameter. The origin of the coordinate system is the center of the spherical head, and the projection of the generatrix of the spherical head onto the horizontal plane is the horizontal axis. The hole edge position includes the horizontal coordinate of the edge of the series of holes away from the top center of the spherical head, and the cutter edge position includes the horizontal coordinate of the edge of the cutter close to the top center of the spherical head. The milling cutter height is obtained by taking the square root of the difference between the square of the end cap radius and the square of the hole edge position, wherein the milling cutter height includes the height of the final running position of the milling cutter when opening the series of holes; The final position of the milling cutter is obtained by taking the square root of the sum of the square of the cutter edge position and the square of the milling cutter height, wherein the final position of the milling cutter includes the abscissa of the final running position of the milling cutter when making the series of holes; The gap value is obtained by subtracting the end cap radius from the final position of the milling cutter; When the spherical end cap is fixed between the support member and the clamping device, the support member is used to pass through the support hole so that the inner surface of the spherical end cap and the outer surface of the positioning fixture form a gap equal to the gap value. According to the opening position, the spherical end cap is cut with a milling cutter to obtain the series of holes.

2. The method for machining a series of holes in a spherical head according to claim 1, characterized in that, The difference between the end cap radius and the final position of the milling cutter is used to obtain the gap value, including: The gap value is represented by a first formula, which includes: - ， Where a represents the gap value, r 封 x represents the radius of the head. 刀 Indicates the position of the blade edge, o 孔 The center position of the hole, d 刀 r 孔 This indicates the radius of the series of holes.

3. The method for machining a series of holes in a spherical head according to claim 1, characterized in that, The series of holes includes the series of holes whose center distance is farthest from the center of the top of the spherical head.

4. The method for machining a series of holes in a spherical head according to claim 1, characterized in that, The step of creating the support hole according to the position of the support hole includes: A threaded hole is made at the location of the support hole to obtain the support hole.

5. The method for machining a series of holes in a spherical head according to claim 1, characterized in that, The process involves cutting the spherical end cap with a milling cutter according to the opening position to obtain the series of holes, including: Obtain the generatrix of the spherical end cap corresponding to the series of holes, and divide the opening position along the generatrix to obtain the first position and the second position; The lowest and highest points of the first and second positions are obtained respectively, and the milling cutter is used to cut from the lowest point to the highest point.

6. A clamping device, characterized in that, The device includes a computer-readable storage medium storing a computer program and a processor, which, when read and run by the processor, implements the method for machining a series of holes in a spherical head as described in any one of claims 1-5; the clamping device further includes a positioning fixture (1), a clamping device (2), and a support member (3), wherein the positioning fixture (1) is used to open a support hole, the support member (3) is used to pass through the support hole so that the inner surface of the spherical head (4) forms a gap with the outer surface of the positioning fixture (1), and the clamping device (2) is used in conjunction with the support member (3) to restrict the movement of the spherical head (4).

7. The clamping device according to claim 6, characterized in that, It also includes a positioning shaft (5), the positioning fixture (1) is an inverted hemisphere that matches the shape of the spherical end cap (4), the top center of the positioning fixture (1) is provided with a limiting hole that matches the diameter of the positioning shaft (5), and the positioning shaft (5) is connected to the positioning fixture (1) through the limiting hole. When the support member (3) passes through the support hole to form the gap between the inner surface of the spherical head (4) and the outer surface of the positioning jig (1), the clamping device (2) passes through the positioning shaft (5) to restrict the movement of the spherical head (4).

8. The clamping device according to claim 7, characterized in that, The positioning fixture (1) and the positioning shaft (5) are integrally formed.

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