Processing technology and processing system for deep cavity workpiece

Abstract

The application discloses a machining process and system for a deep-cavity workpiece, and relates to the technical field of mold machining. The process comprises the following steps: a first tool for preset shape machining of a workpiece to be machined is used to machine the blanking area of the workpiece to be machined, and a workpiece to be finished is obtained after the machining of the blanking area of the workpiece to be machined is completed; a second tool for precision finishing of the workpiece is used to finish the cavity wall of the workpiece to be finished until the dimensional precision of the workpiece to be finished meets the target precision requirement. That is, the waste tool is reasonably utilized to process the first tool for shape machining, the first tool is used to machine the blanking area of the workpiece to be machined, and the workpiece to be finished is obtained, so that the height of the surface to be finished is reduced, the conditions of tool chatter and tool relief during finishing are avoided, the second tool is prevented from being broken, the waste of the tool is reduced, and the machining cost is reduced.

Description

Technical Field

[0001] This application relates to the field of mold processing technology, and in particular to the processing technology and processing system for deep cavity workpieces. Background Technology

[0002] Deep cavity machining refers to the machining of molds with a cavity depth greater than 100mm, which requires the use of longer cutting tools.

[0003] Excessive tool overhang can cause tool chatter and deflection, affecting machining accuracy. To address this, custom-made tools with a specific length-to-diameter ratio are typically commissioned from contract manufacturers to meet the required precision. However, for molds with complex shapes, deep ribs, and numerous cavities, more tools are needed, leading to higher processing costs.

[0004] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main purpose of this application is to provide a machining process for deep cavity workpieces, which aims to solve the technical problem that mold products with complex structural shapes and many deep ribs and cavities require a large number of cutting tools, resulting in high machining costs.

[0006] To achieve the above objectives, this application proposes a machining process for deep-cavity workpieces, the method comprising:

[0007] Using a first tool to process the workpiece into a preset shape, after the clearance area of ​​the workpiece is processed, a clearance workpiece to be repaired is obtained. The first tool is a T-shaped tool obtained by processing and modifying a scrap tool based on the preset shape. The cutting edge structure of the T-shaped tool is adapted to the clearance area.

[0008] Using a second tool for precision trimming of the workpiece, the sidewall of the workpiece to be trimmed is trimmed until the dimensional accuracy of the workpiece meets the target accuracy requirements.

[0009] In one embodiment, before the step of obtaining the workpiece to be trimmed after machining the clearance area of ​​the workpiece using a first tool that performs preset shape machining on the workpiece, the following steps are included:

[0010] Determine the clearance depth and clearance width of the workpiece to be processed;

[0011] Based on the clearance depth and clearance width, the corresponding type of scrap cutting tools are processed and modified to obtain the first cutting tool.

[0012] In one embodiment, when the workpiece to be processed is a cavity workpiece, the step of obtaining the workpiece to be trimmed after processing the clearance area of ​​the workpiece by using a first tool to process the workpiece into a preset shape includes:

[0013] Using a first cutting tool that pre-shapes the workpiece to be processed, the clearance area at the root of the cavity workpiece is processed to obtain the clearance workpiece to be repaired.

[0014] In one embodiment, the root of the cavity workpiece is an undercut surface.

[0015] In one embodiment, when the workpiece to be processed includes an outer wall clearance workpiece, before the step of obtaining the clearance workpiece to be trimmed after processing the clearance area of ​​the workpiece by using a first tool to process the workpiece into a preset shape, the method further includes:

[0016] The workpiece with the outer wall clearance is mounted on the clamping table, and the surface to be machined in the clearance area of ​​the workpiece is parallel to the Z-axis of the tool in the machine tool.

[0017] In one embodiment, before the step of using a second tool for precision trimming of the workpiece to trim the sidewall of the workpiece to be trimmed until the dimensional accuracy of the workpiece to be trimmed meets the target accuracy requirement, the method further includes:

[0018] Determine the cavity wall dimensions of the workpiece to be repaired and the clearance area, wherein the cavity wall dimensions are the cavity depth of the workpiece to be repaired and the clearance area height minus the clearance area height.

[0019] In one embodiment, after the step of using a second tool for precision trimming of the workpiece to trim the sidewall of the workpiece to be trimmed until the dimensional accuracy of the workpiece to be trimmed meets the target accuracy requirement, the method further includes:

[0020] Detect the degree of wear of the first tool and / or the second tool;

[0021] When the wear level meets the preset scrap standard, the first tool and / or the second tool are recycled.

[0022] The recovered first and / or second tools are machined to obtain the latest first tool.

[0023] Furthermore, to achieve the above objectives, this application also proposes a machining system for deep-cavity workpieces, applied to CNC equipment, wherein the machining system for deep-cavity workpieces includes:

[0024] The material removal module is used to process the workpiece into a preset shape using a first tool. After processing the clearance area of ​​the workpiece, a clearance workpiece to be repaired is obtained. The first tool is a T-shaped tool obtained by processing and modifying a scrap tool based on the preset shape. The cutting edge structure of the T-shaped tool is adapted to the clearance area. A second tool is used to perform precision trimming on the workpiece to trim the side wall of the clearance workpiece until the dimensional accuracy of the clearance workpiece meets the target accuracy requirements.

[0025] In one embodiment, the system further includes:

[0026] The workpiece clearance design module is used to generate an undercut surface model of the clearance area in the workpiece to be repaired.

[0027] The tool management module is used to modify, standardize, classify, and manage the inventory of used tools, and to classify and manage the inventory of the first tool according to its cutting diameter, corner radius, and total length.

[0028] One or more technical solutions proposed in this application have at least the following technical effects:

[0029] Utilizing scrap tools as a first tool for shape machining allows for rapid shaping of the workpiece, increases the utilization rate of scrap tools, avoids custom manufacturing, and reduces costs associated with normal tool wear. Furthermore, the first tool is used to create a clearance effect on the workpiece, reducing the height of surfaces requiring precision adjustment. This shortens the length of the second tool used for precision finishing, preventing excessive tool length and potential issues like tool chatter or deflection during the finishing process. This allows for precise finishing of the clearance-reduced workpiece, ensuring the final workpiece meets dimensional accuracy targets and minimizing the risk of tool breakage due to chatter or deflection. In other words, this application, by rationally utilizing scrap tools as a first tool for shape machining and then using it to create a clearance effect on the workpiece, reduces the height of surfaces requiring fine finishing, avoiding chatter and deflection during fine finishing. This ensures machining accuracy while preventing second tool breakage, reducing tool waste, and ultimately lowering machining costs. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A schematic flowchart illustrating the machining process of the deep cavity workpiece in this application;

[0033] Figure 2 A schematic diagram of the reference structure of the cavity workpiece provided for the machining process of the deep cavity workpiece in this application;

[0034] Figure 3 A schematic diagram of the T-shaped tool structure provided for the machining process of the deep cavity workpiece in this application;

[0035] Figure 4 A schematic flowchart illustrating the machining process of the deep cavity workpiece in this application, as shown in Embodiment 2.

[0036] Figure 5 This is a schematic diagram of the modular structure of the machining system for deep cavity workpieces according to an embodiment of this application.

[0037] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0039] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0040] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0042] Current technology typically involves outsourcing the production of custom-made cutting tools with a specific length-to-diameter ratio to meet machining accuracy requirements. However, for mold products with complex shapes and numerous deep ribs and cavities, a larger number of cutting tools are needed, resulting in higher processing costs.

[0043] This application provides a solution that utilizes scrap tools as a first tool for shape machining. This allows for rapid machining of the workpiece shape, improves the utilization rate of scrap tools, avoids custom manufacturing, and reduces costs associated with normal tool wear. The first tool is used to create a clearance machining process on the workpiece, resulting in a clearance workpiece to be finished. This clearance machining reduces the height of the surface requiring precision adjustment, thereby reducing the length of the second tool used for precision finishing. This prevents the second tool from becoming too long and causing tool chatter or deflection during the finishing process. This allows for precision finishing of the clearance workpiece, ensuring the final workpiece meets the target dimensional accuracy and reducing the risk of second tool breakage due to chatter or deflection. In other words, this application, by rationally utilizing scrap tools to create a first tool for shape machining, and using this first tool to create a clearance machining process on the workpiece, reduces the height of the surface requiring fine finishing, avoiding tool chatter and deflection during fine finishing. This ensures machining accuracy while preventing second tool breakage, reducing tool waste, and ultimately lowering machining costs.

[0044] Based on this, the embodiments of this application provide a machining process for deep cavity workpieces, referring to... Figure 1 , Figure 1 This is a schematic flowchart of the first embodiment of the machining process for deep cavity workpieces in this application.

[0045] In this embodiment, the machining process of the deep cavity workpiece includes steps S10~S20:

[0046] Step S10: Using a first tool to process the workpiece into a preset shape, after the clearance area of ​​the workpiece is processed, a clearance workpiece to be repaired is obtained. The first tool is obtained by processing and modifying a scrap tool based on the preset shape.

[0047] It should be noted that the workpiece to be processed is the original workpiece that needs to be processed, with areas on its surface or inside that require machining to meet specific shape and size requirements. The workpiece to be processed can include wall components and external wall clearance components. Pre-shaped machining is the process of initially machining the workpiece according to pre-designed shape requirements. The first tool is used for pre-shaped machining of the workpiece; it has no precision requirements and requires subsequent precision finishing with a second tool. The clearance area is an area on the workpiece to be processed that needs to be machined to avoid interference with other components or to shorten the side wall machining depth, and has no impact on the side structure. The clearance component to be finished is a workpiece that, after the clearance area has been machined with the first tool, has not yet reached the final precision requirements and requires further finishing.

[0048] It should be noted that the first cutting tool is obtained by processing and modifying scrap cutting tools, and has a specific structure and performance to meet specific processing needs.

[0049] It is understandable that by using modified scrap tools as the first tool, and the first tool is optimized according to the shape of a specific clearance area, processing efficiency and quality can be improved. It can also avoid sending the drawings of the workpiece to be processed to the designated tool manufacturer, thus avoiding the leakage of drawings. Furthermore, using scrap tools to make the first tool can effectively reduce costs and improve resource utilization.

[0050] Understandably, the modification of the first tool is optimized based on the shape of the clearance area of ​​the workpiece to be processed. This reduces the complexity of the first tool's path, enabling it to remove material more efficiently during processing, shortening processing time, and providing a good basic shape for the workpiece.

[0051] Optionally, when the workpiece to be processed is a cavity workpiece, a first tool for machining the workpiece to be processed into a preset shape is used to process the clearance area at the root of the cavity workpiece to obtain a clearance workpiece to be repaired.

[0052] It should be noted that the reference Figure 2 A cavity workpiece is a workpiece with an internal cavity structure. Its internal structure requires precise machining to ensure its performance and reliability during assembly and use. The root is the bottom or connecting part of the cavity.

[0053] Furthermore, the root of the cavity workpiece is an undercut surface.

[0054] It should be noted that the inverted surface is a structure that gradually narrows from the inside out.

[0055] Optionally, when the workpiece to be processed is a workpiece with an outer wall clearance, the workpiece with the outer wall clearance is mounted on a clamping table, and the surface to be processed in the clearance area of ​​the workpiece with the outer wall clearance is parallel to the Z-axis of the tool in the machine tool.

[0056] It should be noted that, in one embodiment, the workpiece with an outer wall clearance is a workpiece having an outer wall clearance area located on the outer surface of the workpiece. The clamping table is a device used to fix the workpiece, ensuring its stability and accuracy during machining. The surface to be machined is the surface where the clearance area needs to be machined. The machine tool is a mechanical device used to machine the workpiece, typically including CNC machine tools or milling machines. The Z-axis of the cutting tool is the vertical motion axis of the cutting tool in the machine tool, used to control the up-and-down movement of the cutting tool.

[0057] It should be noted that if a lathe is used to machine the clearance area, the surface to be machined should be parallel to the Z-axis of the lathe.

[0058] It is understandable that using the first tool to machine the clearance area on the outer surface of the clearance workpiece can avoid multiple clamping and positioning of the clearance workpiece, thus avoiding errors caused by different clamping methods.

[0059] Understandably, by reducing the number of clamping and positioning operations, the time spent on clamping and positioning can be saved, thereby improving the processing efficiency of workpieces with open outer walls.

[0060] Optionally, before step S10, it is necessary to determine the clearance depth and clearance width of the workpiece to be processed.

[0061] Based on the clearance depth and clearance width, the corresponding type of scrap cutting tools are processed and modified to obtain the first cutting tool.

[0062] It should be noted that the clearance depth is the vertical distance from the workpiece surface or reference surface to the deepest point of the clearance area. The clearance width is the horizontal dimension of the clearance area, usually referring to its width or diameter. Scrap tools are tools that have been used and are no longer suitable for their original machining tasks, but can be reused for other machining tasks through rework. Rework involves reprocessing and adjusting scrap tools, and the process may include adjustments to the tool's cutting edge shape, size, angle, etc.

[0063] Understandably, through processing and modification, scrap tools can be transformed into tools suitable for specific machining tasks, reducing machining costs and improving resource utilization. Furthermore, tools modified according to the clearance depth and width can better adapt to the shape of the clearance area, improving machining efficiency and accuracy.

[0064] Step S20: Using a second tool for precision trimming of the workpiece, trim the side wall of the workpiece to be trimmed until the dimensional accuracy of the workpiece meets the target accuracy requirements.

[0065] It should be noted that the second tool is used for precision finishing of the workpiece, which can improve the dimensional accuracy of the workpiece to be finished to meet the target accuracy requirements. The sidewall is the part of the workpiece adjacent to the clearance area that needs precision finishing. The target accuracy requirement is the dimensional accuracy standard that the workpiece needs to achieve after machining, usually expressed in the form of tolerance range, used to ensure the performance and quality of the workpiece.

[0066] Understandably, by using a specialized second tool to precisely trim the cavity wall, the dimensional accuracy of the workpiece can be ensured to meet high precision requirements, thereby improving the quality and performance of the workpiece.

[0067] It is understandable that by processing the clearance area in step S10, the height of the side wall of the clearance workpiece to be repaired will be reduced, thereby reducing the required length of the second tool. This avoids the second tool being too long and causing tool chatter or deflection when repairing the side wall, thus ensuring that the second tool will not break and that the accuracy of the clearance workpiece to be repaired meets the target accuracy requirements.

[0068] It is understandable that by first using the first tool to process the workpiece and the clearance area of ​​the workpiece, the shape of the workpiece can be quickly processed. Furthermore, by processing the clearance area, the depth requirement of the side surface for finishing by the second tool is reduced, thereby reducing the length required for the second tool and improving the accuracy of the finishing.

[0069] Optionally, the first tool is a T-shaped tool, and the cutting edge structure of the T-shaped tool is adapted to the clearance area of ​​the workpiece to be repaired.

[0070] It should be noted that the reference Figure 3 A T-type tool is a tool with a T-shaped cutting edge structure. The cutting edge structure refers to the part of the tool used for cutting the workpiece; the shape, size, and angle of the cutting edge directly affect the tool's machining performance.

[0071] Understandably, the clearance area is designed to reduce the depth of precision finishing required on the sidewall without compromising the workpiece's structural requirements. This requires using a T-shaped tool to machine the clearance area away from the opening on the sidewall, so that the clearance area is recessed into the sidewall, thereby reducing the depth of precision finishing on the sidewall.

[0072] It is understandable that by using the modified T-shaped tool, the structure of the workpiece can be better adapted, the machining accuracy can be improved, and the cutting edge structure of the T-shaped tool is adapted to the clearance area, which can efficiently machine the required shape and reduce the machining time. In this embodiment, the machining efficiency is improved by improving machining accuracy and reducing machining time.

[0073] Optionally, prior to step S20, the process further includes:

[0074] Determine the cavity wall dimensions of the workpiece to be repaired and the clearance area, wherein the cavity wall dimensions are the cavity depth of the workpiece to be repaired and the clearance area height minus the clearance area height.

[0075] It should be noted that the cavity wall refers to the inner wall surface of the internal cavity of the workpiece to be repaired, especially the part adjacent to the clearance area that requires precision repair. The cavity wall dimension is the depth of the cavity wall of the workpiece to be repaired, specifically the cavity depth minus the height of the clearance area. The clearance area height is the vertical dimension of the clearance area of ​​the workpiece.

[0076] Understandably, by accurately measuring and calculating the cavity wall dimensions, a reference can be provided for selecting the model of the second tool, and precise reference data can be provided for subsequent machining procedures, thereby ensuring the accuracy and efficiency of the correction process.

[0077] In practical implementation, the design steps are as follows: A clearance area at the cutting depth position is pre-designed in the mold's digital model. This clearance area is the undercut surface at the workpiece root, used to shorten the effective cutting depth of the tool. The machining steps are as follows: First, the clearance area is machined using the aforementioned T-shaped non-standard tool. Then, the sidewall is finished to the target size using a standard tool. That is, by first machining the clearance area, the cutting depth of the tool is shortened, suppressing tool chatter; then, combined with finishing using a standard tool, dimensional accuracy is ensured.

[0078] This embodiment provides a machining process for deep-cavity workpieces. It utilizes scrap tools to create a first tool for shape machining, enabling rapid machining of the workpiece's shape and improving the utilization rate of scrap tools. This avoids the need for custom machining and reduces costs associated with normal tool wear. The first tool is used to create a clearance machining process on the workpiece, resulting in a clearance workpiece to be finished. This clearance machining reduces the height of the surface requiring precision adjustment, thereby reducing the length of the second tool used for precision finishing. This prevents the second tool from becoming too long, which could lead to tool chatter or deflection during finishing. This allows for precision finishing of the clearance workpiece, ensuring the final workpiece meets the target dimensional accuracy and reducing the risk of second tool breakage due to chatter or deflection. In other words, this application, by rationally utilizing scrap tools to create a first tool for shape machining and then using this first tool to create a clearance machining process on the workpiece, reduces the height of the surface requiring fine finishing, avoiding tool chatter and deflection during fine finishing. This ensures machining accuracy while preventing second tool breakage, reducing tool waste, and ultimately lowering machining costs.

[0079] Based on the first embodiment of this application, in the second embodiment of this application, the content that is the same as or similar to that in Embodiment 1 above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 4 After step S20, the machining process of the deep cavity workpiece further includes steps S01 to S03:

[0080] Step S01: Detect the wear degree of the first tool and / or the second tool;

[0081] Step S02: When the wear level meets the preset scrap standard, the first tool and / or the second tool are recycled;

[0082] Step S03: Process the recovered first tool and / or second tool to obtain the latest first tool.

[0083] It should be noted that wear level refers to the degree of reduction in size, change in shape, or degradation in performance of a cutting tool due to cutting, friction, or other factors during use. The preset scrap standard is a pre-set threshold for the degree of tool wear; when the wear level reaches or exceeds this threshold, the tool is considered no longer suitable for continued use. The newest first cutting tool is the first tool that has been reworked and modified to be restored to a usable state.

[0084] Understandably, comparing the detected tool wear with preset scrap standards helps to scientifically determine the tool's lifespan, avoid excessive use of worn tools leading to decreased machining quality, and collect, classify, and mark tools that are no longer suitable for use to facilitate tool reuse, reduce resource waste, and improve resource utilization.

[0085] Understandably, by detecting the wear level of the first and / or second cutting tools and determining whether the tools need to be recycled and reprocessed based on preset scrap standards, the recycled tools are reprocessed and modified to obtain the newest first cutting tool, thus realizing the recycling of cutting tools and improving processing efficiency and economic benefits.

[0086] In practical implementation, scrap standard cutting tools can be selected and modified into T-type non-standard cutting tools through grinding. The cutting edge structure of the T-type non-standard cutting tools is adapted to the requirements of deep cavity clearance. Among them, the models of T-type non-standard cutting tools include B3R0.2-12, B4R0.5-20, B6R0.5-35, and B10R1-80, where "B" is the cutting diameter of the tool, "R" is the fillet radius of the tool, and "-" is the total length of the tool. For example, B3R0.2-12 indicates a tool with a cutting diameter of 3mm, a fillet radius of 0.2mm, and a total length of 12mm.

[0087] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the processing technology of deep cavity workpieces in this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0088] This application also provides a machining system for deep-cavity workpieces, applied to CNC equipment; please refer to [reference needed]. Figure 5 The machining system for the deep cavity workpiece includes:

[0089] The material removal module 10 is used to process the workpiece to be processed into a preset shape using a first tool. After the clearance area of ​​the workpiece to be processed is completed, a clearance workpiece to be repaired is obtained. The first tool is a T-shaped tool obtained by processing and modifying a scrap tool based on the preset shape. The cutting edge structure of the T-shaped tool is adapted to the clearance area. The second tool is used to perform precision trimming on the workpiece to trim the side wall of the clearance workpiece to be repaired until the dimensional accuracy of the clearance workpiece to be repaired meets the target accuracy requirements.

[0090] Optionally, the machining system for deep-cavity workpieces also includes:

[0091] The workpiece clearance design module 20 is used to generate the undercut surface model of the clearance area in the workpiece to be repaired.

[0092] The tool management module 30 is used to modify, standardize, classify, and manage the inventory of used tools, and to classify and manage the inventory of the first tool according to its cutting diameter, corner radius, and total length.

[0093] The deep cavity workpiece machining system provided in this application, employing the deep cavity workpiece machining process described in the above embodiments, can solve the technical problem of high machining costs due to the large number of cutting tools required for mold products with complex structural shapes and numerous deep ribs and cavities. Compared with the prior art, the beneficial effects of the deep cavity workpiece machining system provided in this application are the same as those of the deep cavity workpiece machining process provided in the above embodiments, and other technical features of the deep cavity workpiece machining system are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0094] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. All equivalent structural transformations made under the technical concept of this application and using the content of this application specification and drawings, or direct / indirect applications in other related technical fields, are included in the scope of protection of this application.

Claims

1. A process for machining a deep cavity workpiece, characterized in that, The process comprises: After the first tool for preset shape processing of the workpiece to be processed is used to process the avoidance area of the workpiece to be processed, a workpiece to be finished is obtained, the first tool is a T-shaped tool obtained by processing and modifying a waste tool based on the preset shape, and the blade structure of the T-shaped tool is matched with the avoidance area; the deep cavity workpiece is a cavity workpiece, and the avoidance area is a root undercut surface; the avoidance area is used to reduce the depth of precision finishing of the side wall under the premise of not damaging the structural requirements of the workpiece, and the T-shaped tool is used to process the avoidance area away from the opening, so that the avoidance area is recessed in the side wall, thereby reducing the depth of precision finishing of the side wall; the side wall is a part of the workpiece to be processed adjacent to the avoidance area and needing to be precision finished; A second tool for precision finishing of the workpiece to be processed is used to finish the side wall of the workpiece to be finished until the dimensional precision of the workpiece to be finished meets the target precision requirement.

2. The process of machining a deep cavity workpiece of claim 1, wherein, Before the step of obtaining the workpiece to be finished by using the first tool for preset shape processing of the workpiece to be processed to process the avoidance area of the workpiece to be processed, the method comprises: Determine the avoidance depth and avoidance width of the workpiece to be processed that need to be processed; Based on the avoidance depth and the avoidance width, the first tool is obtained by processing and modifying the waste tool of the corresponding type.

3. The process of claim 1, wherein, Before the step of using the second tool for precision finishing of the workpiece to be processed to finish the side wall of the workpiece to be finished until the dimensional precision of the workpiece to be finished meets the target precision requirement, the method further comprises: Determine the side wall size of the workpiece to be finished, which is the size of the cavity depth of the workpiece to be finished minus the height of the avoidance area.

4. The process of claim 1, wherein, After the step of using the second tool for precision finishing of the workpiece to be processed to finish the side wall of the workpiece to be finished until the dimensional precision of the workpiece to be finished meets the target precision requirement, the method further comprises: Detect the wear degree of the first tool and / or the second tool; When the wear degree meets the preset waste standard, the first tool and / or the second tool is recycled; Process the recycled first tool and / or second tool to obtain the latest first tool.

5. A system for processing a deep cavity workpiece, comprising: The system is applied to a CNC device, and the system comprises: The material removal module is used for machining the blanking area of a workpiece to be machined by using a first tool for preset shape machining of the workpiece to be machined, and obtaining a workpiece to be finished after the machining of the blanking area is completed. The first tool is a T-shaped tool obtained by machining and modifying a waste tool based on the preset shape, and the blade structure of the T-shaped tool is matched with the blanking area. The deep cavity workpiece is a cavity workpiece, and the blanking area is a root undercut surface. The blanking area is used for reducing the depth of precision finishing of the side wall under the premise that the structure requirement of the workpiece is not damaged. The T-shaped tool is used for machining the blanking area away from the opening, so that the blanking area is recessed in the side wall, and the depth of precision finishing of the side wall is reduced. The side wall is a part of the workpiece to be machined which is adjacent to the blanking area and needs to be precision finished. A second tool for precision finishing of the workpiece to be machined is used for finishing the side wall of the workpiece to be finished until the size precision of the workpiece to be finished meets the target precision requirement.

6. The system for processing a deep cavity workpiece of claim 5, wherein, The system further comprises: A workpiece blanking design module is used for generating an undercut surface model of the blanking area in the workpiece to be finished. A tool management module is used for modifying, standardizing, classifying and inventory managing the waste tool, and classifying and inventory managing the first tool according to the blade diameter, the corner radius and the total length.

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