Workpiece machining method and system and application thereof

Abstract

The invention discloses a workpiece machining method and system and application of the workpiece machining method and system. The workpiece machining method comprises the steps that a profiling clamp model is constructed; machining a workpiece semi-finished product, wherein the workpiece semi-finished product comprises a machined clamp contact area; a profiling clamp is prepared based on the profiling clamp model, the profiling clamp comprises a profiling position and a positioning face, and the shape and size of the profiling position are matched with the shape and size of the clamp contact area; and the clamp contact area of the workpiece semi-finished product is clamped on the profiling position of the profiling clamp so that the clamp contact area can be attached to the surface of the profiling position, the positioning face serves as the reference, material reduction machining is conducted on the remaining part of the workpiece semi-finished product, and a target workpiece is obtained. Positioning and clamping are achieved by attaching the profiling position of the profiling clamp to the clamp contact area of the workpiece semi-finished product, the stability of the target workpiece in the working procedures of machining, assembling and the like is guaranteed, and the machining precision is guaranteed by constructing the positioning face of the profiling clamp to serve as the reference face of the target workpiece.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of workpiece processing, and particularly relates to a workpiece processing method and system and application thereof. BACKGROUND

[0002] In the field of complex part processing, due to the characteristics that the part itself has no reference surface or is not easy to clamp, the geometric precision is generally unstable and the form and position tolerances are not easy to guarantee during the processing.

[0003] Although the existing technical system provides solutions in different dimensions, it fails to effectively balance the contradiction between processing quality, production efficiency and cost control. Constructing a reference surface is slow and not suitable for mass production, and five-axis machining requires high technical personnel and is difficult to guarantee the quality of the processing surface and the processing space. In response to the complex needs of modern manufacturing to effectively reduce costs, improve precision and efficiency, there is still a systematic technical gap.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a workpiece processing method, system and application thereof. SUMMARY

[0005] The present application aims to provide a workpiece processing method, system and application thereof, which can solve the problems of geometric precision instability and surface quality degradation caused by the difficulty of clamping the product during the processing of complex curved surfaces.

[0006] To achieve the above-mentioned purpose, the technical solution provided by an embodiment of the present application is as follows:

[0007] A workpiece processing method, comprising:

[0008] analyzing the clamp contact area of the target workpiece, and constructing a profiling clamp model based on the geometric characteristics of the clamp contact area;

[0009] processing the workpiece semi-finished product, the workpiece semi-finished product comprising a clamp contact area that has been processed;

[0010] preparing a profiling clamp based on the profiling clamp model, the profiling clamp comprising a profiling position and a positioning surface, the shape and size of the profiling position being matched with the shape and size of the clamp contact area;

[0011] clamping the clamp contact area of the workpiece semi-finished product on the profiling position of the profiling clamp to make the clamp contact area fit the surface of the profiling position, and performing subtractive processing on the remaining part of the workpiece semi-finished product based on the positioning surface to obtain the target workpiece.

[0012] In one or more embodiments of the present application, analyzing the clamp contact area of the target workpiece comprises:

[0013] performing structural analysis on the target workpiece to obtain a three-dimensional model of the target workpiece in the current process;

[0014] predicting deformation and vibration that may occur in the target workpiece during processing, and determining a clamp contact area of the target workpiece based on the prediction results, the clamp contact area including a rigidity deficiency area, a reference surface, and / or a maximum deformation area.

[0015] In one or more embodiments of the present application, the profiling surface includes a curved surface and / or a flat surface; and / or,

[0016] The profiling clamp further includes a main body portion, the positioning surface is at least two surfaces of the main body portion, the profiling position is recessed on the positioning surface of the main body portion, and the depth of the profiling position is less than or equal to the thickness of the clamp contact area, or the profiling position is protrudingly arranged on the positioning surface of the main body portion.

[0017] In one or more embodiments of the present application, clamping the clamp contact area of the workpiece semi-finished product on the profiling position of the profiling clamp to make the clamp contact area fit the surface of the profiling position includes:

[0018] nesting the clamp contact area of the workpiece semi-finished product in the profiling position and making the clamp contact area engage with the profiling position; and / or,

[0019] nesting the profiling position in the clamp contact area of the workpiece semi-finished product and making the clamp contact area engage with the profiling position.

[0020] In one or more embodiments of the present application, the workpiece processing method further includes:

[0021] When the clamp contact area includes a threaded hole, the profiling clamp includes a corresponding first positioning hole, and after clamping the clamp contact area of the workpiece semi-finished product on the profiling position of the profiling clamp to make the clamp contact area fit the profiling positioning surface, the threaded hole and the first positioning hole are connected by a fixing member.

[0022] In one or more embodiments of the present application, the workpiece processing method further includes: after preparing the profiling clamp based on the profiling clamp model, fixing and clamping the profiling clamp on the bottom plate.

[0023] In one or more embodiments of the present application, the workpiece processing method further includes:

[0024] scanning the profiling position of the profiling clamp by a coordinate measuring instrument, and comparing it with the clamp contact area in the three-dimensional model of the target workpiece to determine whether the error between the profiling position of the profiling clamp and the clamp contact area is less than or equal to a first set threshold; and / or,

[0025] Clamping the clamping contact area of the standard target workpiece on the profiling position of the profiling fixture, and determining whether the gap between the standard target workpiece and the profiling position of the profiling fixture is less than or equal to the second set threshold.

[0026] In an embodiment of the present application, a workpiece processing system is provided, which comprises:

[0027] A model construction module is configured to analyze the clamping contact area of a target workpiece and construct a profiling fixture model based on the geometric features of the clamping contact area.

[0028] A first processing module is configured to process a workpiece semi-finished product, which comprises a clamping contact area processed to completion.

[0029] A fixture preparation module is configured to prepare a profiling fixture based on the profiling fixture model, wherein the profiling fixture comprises a profiling position and a positioning surface, and the shape and size of the profiling position are matched with the shape and size of the clamping contact area.

[0030] A second processing module is configured to clamp the clamping contact area of the workpiece semi-finished product on the profiling position of the profiling fixture so that the clamping contact area is in surface contact with the profiling position, and perform subtractive processing on the remaining part of the workpiece semi-finished product based on the positioning surface to obtain a target workpiece.

[0031] In an embodiment of the present application, an electronic device is provided, which comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements a workpiece processing method when executing the program.

[0032] In an embodiment of the present application, a computer readable medium is provided, which carries computer execution instructions, and the computer execution instructions are used to implement a workpiece processing method when executed by a processor.

[0033] Compared with the prior art, the workpiece processing method, system and application thereof of the present application realize positioning and clamping by matching the profiling position of the profiling fixture with the clamping contact area of the workpiece semi-finished product, ensure the stability of the target workpiece in the processing and assembly processes, and ensure the processing precision by constructing the positioning surface of the profiling fixture as the reference surface of the target workpiece.

[0034] For the same shape of target workpiece, the profiling fixture can be repeatedly used, and the reference surface does not need to be re-constructed multiple times in the processing procedure, which improves the processing efficiency, reduces the manual intervention error, and ensures the consistency of the target workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0036] Figure 1 Flow chart of workpiece machining method in an embodiment of the present application;

[0037] Figure 2a And Figure 2b Structural schematic diagram of target workpiece and profiling fixture in embodiment 1 of the present application;

[0038] Figure 3a And Figure 3b Structural schematic diagram of target workpiece and profiling fixture in embodiment 2 of the present application;

[0039] Figure 4a And Figure 4b Structural schematic diagram of target workpiece and profiling fixture in embodiment 3 of the present application;

[0040] Figure 5 Structural schematic diagram of workpiece machining system in an embodiment of the present application;

[0041] Figure 6 Schematic diagram of electronic device in an embodiment of the present application. DETAILED DESCRIPTION

[0042] In order to make those skilled in the art better understand the technical solutions in the present disclosure, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some embodiments of the present disclosure, not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative effort should be within the protection scope of the present disclosure.

[0043] As described in the background, in the field of machining complex parts, due to the characteristics that the parts themselves have no reference surface or are not easy to clamp, the machining process generally faces the situation that geometric precision is unstable and shape and position tolerance is not easy to guarantee. In order to break through this dilemma, the current industry mainly adopts the following technical route:

[0044] By using a wood or other easily cut structure-stable material to adhere to the surface of a complex part with glue for support or to build a new reference surface. This solution, although it can provide support and reference, has significant limitations in practical applications, such as increased production costs and production cycles in mass production, scratches on the surface of the part when removing the fixture adhered to the part, etc.

[0045] Machining using a five-axis machine; five-axis machining is a powerful tool for machining polyhedrons with complex, high-precision, and high-value-added parts. Its core advantages are the precision and efficiency improvement brought by "one clamping" for complex machining, as well as excellent machining capability for complex geometric shapes. However, the cost of these advantages is significantly higher, such as machine tools, software, tools, maintenance, etc., and higher technical threshold, such as complex programming, professional personnel, precise debugging and maintenance, etc.; and the machining space and machine rigidity are greatly limited.

[0046] Although the existing technical system provides solutions in different dimensions, it has not effectively balanced the contradiction between machining quality, production efficiency, and cost control. The existing construction reference surface technology is inefficient and not suitable for mass production, while five-axis machining requires high technical personnel and is difficult to guarantee the quality of the machined surface and the machining space. These two types of technical solutions still have systematic technical gaps in responding to the complex demand of modern manufacturing to effectively reduce costs and improve precision and efficiency.

[0047] Based on the in-depth analysis of the above technical problems, the present application provides a workpiece machining method, which designs a profiling fixture according to the shape profile, curved surface feature or key positioning surface of the target workpiece, and realizes positioning and clamping through the accurate fitting of the profiling fixture and the workpiece, to ensure the precision and stability of the workpiece in the machining, assembly and other processes. The workpiece machining method specifically includes:

[0048] Analyzing the fixture contact area of the target workpiece, and constructing a profiling fixture model based on the geometric features of the fixture contact area;

[0049] Machining a workpiece semi-finished product, which includes a machined fixture contact area;

[0050] Preparing a profiling fixture based on the profiling fixture model, the profiling fixture including a profiling position and a positioning surface, the shape and size of the profiling position being matched with the shape and size of the fixture contact area;

[0051] Clamping the fixture contact area of the workpiece semi-finished product on the profiling position of the profiling fixture to make the fixture contact area fit the surface of the profiling position, and performing subtractive machining on the remaining part of the workpiece semi-finished product based on the positioning surface to obtain the target workpiece.

[0052] Further, the profiling fixture in an embodiment further comprises a main body, the locating surface is at least two surfaces of the main body, the profiling position is recessed on the locating surface of the main body, or the profiling position is protruding on the locating surface of the main body.

[0053] Further, the fixture contact area of the target workpiece in an embodiment is analyzed, comprising:

[0054] Performing structural analysis on the target workpiece to obtain a three-dimensional model of the target workpiece under the current process;

[0055] Predicting the deformation and vibration that may occur in the target workpiece during processing, and based on the prediction results, determining the fixture contact area of the target workpiece, which includes a region of insufficient rigidity and / or a region of maximum deformation.

[0056] Further, the workpiece processing method in an embodiment further comprises: nesting the fixture contact area of the workpiece semi-finished product in the profiling position, and making the fixture contact area and the profiling position fit together; or,

[0057] Nesting the profiling position in the fixture contact area of the workpiece semi-finished product, and making the fixture contact area and the profiling position fit together.

[0058] Further, the workpiece processing method in an embodiment further comprises: when the fixture contact area includes a threaded hole, the profiling fixture includes a corresponding first positioning hole, after the fixture contact area of the workpiece semi-finished product is clamped on the profiling position of the profiling fixture to make the fixture contact area and the profiling locating surface fit together, the threaded hole and the first positioning hole are connected by a fixing member.

[0059] Further, the workpiece processing method in an embodiment further comprises: scanning the profiling position of the profiling fixture by a coordinate measuring instrument, and comparing it with the fixture contact area in the three-dimensional model of the target workpiece to determine whether the error between the profiling position of the profiling fixture and the fixture contact area is less than or equal to a first set threshold; or,

[0060] Clamping the fixture contact area of the standard target workpiece on the profiling position of the profiling fixture to determine whether the gap between the standard target workpiece and the profiling position of the profiling fixture is less than or equal to a second set threshold.

[0061] The profiling position and the locating surface of the profiling fixture are used as a unified positioning reference to reduce the clamping time of the workpiece semi-finished product, simplify the clamping process, and reduce the error of manual intervention. In the present application, the contact surface between the profiling fixture and the workpiece semi-finished product is fit together to ensure the effectiveness of the support, and the support rigidity is better. The main body of the profiling fixture has sufficient rigidity and strength, and can withstand the cutting force and vibration generated during processing.

[0062] The present invention will be further described below with reference to specific embodiments.

[0063] Example 1:

[0064] like Figure 1 As shown, the workpiece processing method in this embodiment includes:

[0065] S10, Analyze the fixture contact area of ​​the target workpiece, and construct a contouring fixture model based on the geometric features of the fixture contact area;

[0066] S20, Processing workpiece semi-finished products, the workpiece semi-finished products include the processed fixture contact area;

[0067] S30, a contouring fixture is prepared based on the contouring fixture model. The contouring fixture includes contouring positions and positioning surfaces. The shape and size of the contouring positions match the shape and size of the contact area of ​​the fixture.

[0068] S40, clamp the fixture contact area of ​​the workpiece semi-finished product onto the contouring position of the contouring fixture so that the fixture contact area fits the surface of the contouring position. Using the positioning surface as a reference, perform subtractive processing on the remaining part of the workpiece semi-finished product to obtain the target workpiece.

[0069] Furthermore, in this embodiment, step S10 specifically includes:

[0070] Perform structural analysis on the target workpiece to obtain a three-dimensional model of the target workpiece in the current process;

[0071] The deformation and vibration that may occur in the target workpiece during the processing are predicted, and the fixture contact area of ​​the target workpiece is determined based on the prediction results. The fixture contact area includes the area with insufficient rigidity, the area with the maximum deformation, the datum surface, or the area of ​​the target workpiece that is easier to construct a datum surface as the fixture contact area.

[0072] For example, finite element analysis is performed on the target workpiece, and the region of maximum deformation of the target workpiece is defined as the clamping contact region of the target workpiece. In other alternative embodiments, if the target workpiece includes a reference surface, the reference surface is defined as the clamping contact region of the target workpiece. In yet another alternative embodiment, for a curved workpiece, the entire curved surface is considered as the clamping contact region of the curved workpiece.

[0073] For example, a three-dimensional model of the target workpiece in the current process can be obtained by designing with 3D software. The positioning reference, clamping requirements and the accuracy requirements of the fixture for the processing process can be clarified through the three-dimensional model. It can be understood that the target workpiece in the current process may be a blank or a semi-finished product after preliminary rough machining.

[0074] In this embodiment, the profile clamp model is constructed based on the geometric characteristics of the clamp contact area, specifically including: designing the core structure profile position and main body of the profile clamp through CAD software (such as UG, SolidWorks), the profile position includes the profile surface that fits the workpiece, and the main body is used to ensure the rigidity of the profile clamp.

[0075] Further, the embodiment also includes preprocessing the profile clamp model: importing the three-dimensional model of the profile clamp into the CAM software (such as UG, PowerMILL), and dividing the machining area. Among them, the profile position is taken as the core area, and high-precision machining program needs to be set, and the main body can be set to simplify the machining degree.

[0076] Further, the embodiment also includes defining key parameters for the profile clamp model: defining the tolerance of the profile surface (for example, taking 1 / 3~1 / 5 of the target workpiece positioning tolerance), the geometric tolerance of the profile clamp itself (such as flatness, parallelism), and the material (selecting cast iron, aluminum alloy, high-strength plastic according to the working condition.

[0077] Referring to FIG. 2, in the embodiment, the target workpiece 200 is predicted by predicting the deformation and vibration that may occur during the machining process of the target workpiece 200, and the bottom of the target workpiece 200 is set as the clamp contact area 201. It can be understood that the clamp contact area 201 is more likely to construct a reference surface relative to other areas of the target workpiece 200. It should be noted that the clamp contact area 201 in this embodiment has a certain thickness and is not a plane.

[0078] Further, the structure of the target workpiece 200 itself has a threaded hole 202, and the extension direction of the clamp contact area 201 is perpendicular to the extension direction of the threaded hole 202, so as to facilitate the fixation of the target workpiece 200 semi-finished product to the profile position 211 of the profile clamp 210 through the threaded hole 202.

[0079] It can be understood that in other alternative embodiments, the profile clamp 210 does not set the first positioning hole, that is, the profile clamp 210 and the workpiece semi-finished product corresponding to the target workpiece do not need to be connected by an additional fixing member, and can rely on the clamping relationship between the two to achieve fixation, and through the accurate fitting of the profile clamp 210 and the workpiece semi-finished product corresponding to the target workpiece 200 to achieve positioning and clamping.

[0080] Based on the above analysis, the blank corresponding to the target workpiece 200 is machined, and the blank of the target workpiece 200 is exemplarily subjected to subtractive machining, and the main process includes:

[0081] First rough machining: quickly removing excess material in the blank;

[0082] Semi-finish machining: preparing a primary workpiece semi-finished product with a preliminary target workpiece shape;

[0083] First finishing: the jig contact area 201 of the primary workpiece semi-finished product (i.e. the part that needs to be placed in the profiling position 211 in the subsequent process) is finished to obtain the workpiece semi-finished product corresponding to the target workpiece 200.

[0084] A profiling jig model is constructed based on the geometric characteristics of the jig contact area, and a profiling jig 210 is prepared based on the profiling jig model. The profiling jig 210 includes a profiling position 211, the surface of which is a profiling surface, and the shape and size of the profiling position are matched with the shape and size of the jig contact area, so that the jig contact area 201 of the workpiece semi-finished product can be fitted in the profiling position 211, i.e. the profiling surface just matches the surface of the jig contact area 201.

[0085] Exemplarily, the step S30 of preparing the profiling jig 210 based on the profiling jig model includes:

[0086] S301, planning tool path:

[0087] Rough machining: select a ball end mill or a face mill to quickly remove the excess of the profiling jig blank, and preferentially ensure efficiency;

[0088] Semi-finishing: for the profiling surface, a ball nose or a round nose cutter is used to optimize the path to reduce cutting residues;

[0089] Finishing: for the positioning surface, a small-diameter ball nose cutter or an end mill is used to ensure that the surface roughness Ra≤1.6μm through a dense tooth path (the row spacing is 0.1-0.5mm);

[0090] Cutting parameter setting: match the parameters according to the material (for example, select 800-1500r / min spindle speed for cast iron, and select 2000-5000r / min for aluminum alloy) and cutter diameter (φ10mm cutter feed speed is 1000-2000mm / min) to avoid vibration or overcutting.

[0091] S302, machining execution:

[0092] Prepare the profiling jig blank: select the blank of a forging, casting or plate according to the size of the profiling jig, and reserve 5-10mm machining allowance to avoid the influence of blank defects on accuracy;

[0093] Clamping and tool setting: fix the profiling jig blank on the numerical control milling machine workbench through the vise or special tooling, and calibrate the coordinate system with the edge finder or probe (ensure that the machining coordinate system is consistent with the design coordinate system);

[0094] Rough machining: remove most of the excess of the profiling jig to form the basic profile of the profiling jig, and focus on ensuring the rigidity of the main part;

[0095] Semi-finishing: refine the profiled surface shape, control the allowance to 0.5-1mm, lay the foundation for finishing;

[0096] Finishing: focus on the profiled surface, ensure accuracy through slow feed and small cutting depth (0.1-0.3mm), and turn on the cooling system (oil mist or cutting fluid) to reduce thermal deformation;

[0097] Special structure processing: if the profiled fixture contains deep cavities and narrow slots, long-necked tools should be selected and the feed speed should be reduced to avoid machining errors caused by tool deflection.

[0098] After the machining is completed, the profiled fixture 210 is shown in Figure 2a The positioning surface of the embodiment includes the surface of the profiled fixture 210. It can be understood that the profiled fixture 210 itself is close to a regular cube, so it is easier to construct a coordinate system based on the positioning surface 212.

[0099] It can be understood that the workpiece semi-finished product shape of the target workpiece 200 is irregular, and the surface is rough, so it cannot be directly positioned and precisely machined using its rough and uneven surface. When the fixture contact area 201 of the workpiece semi-finished product of the target workpiece 200 is clamped in the profiled position 211, the positioning surface 212 can be a stable, reliable, and repeatable positioning and measuring basis for the target workpiece 200, thereby ensuring machining accuracy and interchangeability. In addition, the main body of the profiled fixture 210 can also provide a certain support strength for workpiece machining.

[0100] Further, in the embodiment, the side of the fixture contact area 201 of the target workpiece 200 is provided with a screw hole 202, and the profiled fixture 210 further includes a corresponding first positioning hole 213, which is arranged at the bottom of the profiled position 211. The first positioning hole 213 is connected to the screw hole 202 and the first positioning hole 213 through the first fixing member 216, so as to more firmly fix the workpiece semi-finished product in the profiled position 211 of the profiled fixture 210.

[0101] In the exemplary embodiment, the profiled fixture 210 further includes a second positioning hole 214, and the workpiece machining method further includes: fixing and clamping the profiled fixture 210 on the bottom plate 220 through the second fixing member 215.

[0102] Further, the bottom plate 220 in the embodiment further includes a positioning pin 221, and the bottom of the profiled fixture 210 is provided with a pin hole (not shown in the figure), which is matched with the positioning pin 221. The positioning pin 221 can be clamped into the pin hole, and the profiled fixture 210 is quickly positioned on the bottom plate 220 by setting the pin hole and the positioning pin 221, further improving the workpiece machining efficiency.

[0103] Further, the workpiece processing method in the embodiment further includes: performing surface treatment on the profiling fixture 210.

[0104] Illustratively, the burrs left by milling the profiling fixture 210 are removed by hand or special tools to avoid scratching the fixture contact area 201 of the target workpiece 200 by the burrs of the profiling fixture 210.

[0105] Still illustratively, the profiling fixture 210 is subjected to aging treatment to eliminate internal stress, for example, the cast iron profiling fixture 210 is subjected to artificial aging at 200℃ for 4h, and is subjected to paint rust prevention or quenching (for example, quenching to HRC40-45 for high-strength profiling fixture 210);

[0106] Further, the workpiece processing method further includes: scanning the profiling position of the profiling fixture by a coordinate measuring instrument, and comparing it with the fixture contact area in the three-dimensional model of the target workpiece to determine whether the error between the profiling position of the profiling fixture and the fixture contact area is less than or equal to a first set threshold. Illustratively, the first set threshold is 0.02mm, 0.25mm or 0.03mm.

[0107] Further, the workpiece processing method further includes: clamping the fixture contact area of the standard target workpiece on the profiling position of the profiling fixture 210 to determine whether the gap between the standard target workpiece and the profiling position of the profiling fixture 210 meets a second set threshold range. Illustratively, the gap is detected by a feeler gauge (the gap ≤0.01mm is qualified).

[0108] In combination with Figure 2b , the fixture contact area of the workpiece semi-finished product is clamped on the profiling position of the profiling fixture to make the fixture contact area fit the surface of the profiling position, and then subtractive machining is performed on the remaining part of the workpiece semi-finished product to obtain the target workpiece 200.

[0109] It should be noted that, Figure 2a and Figure 2b , the target workpiece 200 is in a state after processing is completed, Figure 2a and Figure 2b indicate the relationship between the fixture contact area 201 and the profiling position 211 before the profiling position 211 is engaged with the fixture contact area 201 of the target workpiece 200, and it can be understood that the area of the target workpiece 200 other than the fixture contact area 201 engaged with the profiling position 211 is not processed before subtractive machining is performed on the remaining part of the workpiece semi-finished product.

[0110] The embodiment realizes positioning and clamping through the accurate fitting of the profiling fixture 210 and the target workpiece 200, guarantees the stability of the target workpiece 200 in the machining, assembly and other processes, and guarantees the accuracy of the target workpiece 200 in the machining, assembly and other processes by constructing the positioning surface 212 of the profiling fixture 210 as the reference surface of the target workpiece 200.

[0111] For the same shape of target workpiece 200, the profiling fixture 210 provided by the embodiment can be reused, so that the reference surface does not need to be restructured multiple times in the machining process, and the "reference surface" of multiple target workpieces 200 is consistent, thereby improving the machining efficiency, reducing the manual intervention error, and ensuring the consistency of the target workpieces 200.

[0112] Embodiment 2:

[0113] In combination with Figure 3a and Figure 3b As shown in the figure, the target workpiece 300 of the embodiment is approximately a curved surface structure, and the embodiment takes one side of the curved surface of the target workpiece 300 as the fixture contact area 301.

[0114] The workpiece machining method of the embodiment includes: machining a blank corresponding to the target workpiece 300 to prepare a primary workpiece semi-finished product with a preliminary target workpiece shape, and finishing the fixture contact area 301 of the primary workpiece semi-finished product to obtain a workpiece semi-finished product corresponding to the target workpiece 300. Figure 3a As shown in the figure, the fixture contact area 301 corresponding to the target workpiece 300 further includes a first recessed portion 3021, a second recessed portion 3022, and a third recessed portion 3023.

[0115] The profiling fixture 310 of the embodiment includes a main body portion, the positioning surface of the profiling fixture 310 includes the upper surface, the lower surface, and the four side surfaces of the main body portion, and the profiling position 311 of the profiling fixture 310 is protrudingly arranged on the positioning surface of the main body portion.

[0116] The workpiece machining method of the embodiment differs from that of embodiment 1 in that the profiling position is nested in the fixture contact area of the workpiece semi-finished product, and the fixture contact area is clamped with the profiling position, that is, the workpiece semi-finished product needs to be nested outside the profiling position in the embodiment.

[0117] Further, the profiling position 311 of the embodiment further includes a first protruding portion 3111, a second protruding portion 3112, and a third protruding portion 3113, which respectively correspond to the first recessed portion 3021, the second recessed portion 3022, and the third recessed portion 3023 of the fixture contact area 301 of the target workpiece 300.

[0118] Further, the first recess 3021, the second recess 3022 and the third recess 3023 of the clamp contact area 301 in the embodiment are respectively provided with screw holes, and therefore the first protrusion 3111, the second protrusion 3112 and the third protrusion 3113 of the profiling clamp 310 are respectively provided with corresponding first positioning holes, and the screw holes and the first positioning holes are connected by the first fixing member 316 to more firmly fix the workpiece semi-product on the profiling position 311 of the profiling clamp 310.

[0119] It should be noted that, Figure 3a and Figure 3b The target workpiece 300 in the above-mentioned figures is in a state after processing, Figure 3a and Figure 3b indicate the relationship between the clamp contact area 301 and the profiling position 311. It can be understood that before the remaining part of the workpiece semi-product is subjected to subtractive processing, the area of the target workpiece 300 shown in the figures, which is outside the clamp contact area 301 engaged with the profiling position 311, is not processed.

[0120] In the exemplary embodiment, the profiling clamp 310 further comprises a second positioning hole 314, and the workpiece processing method further comprises: fixing the profiling clamp 310 on the base plate 320 by the second fixing member 315.

[0121] Further, the base plate 320 in the embodiment further comprises a positioning pin 321, and the bottom of the profiling clamp 310 is provided with a pin hole (not shown in the figures) matched with the positioning pin 321. The positioning pin 321 can be engaged into the pin hole, and the pin hole and the positioning pin 321 are used to quickly position the profiling clamp 310 on the base plate 320, further improving the workpiece processing efficiency.

[0122] In other alternative embodiments, the profiling clamp 310 is not provided with the first positioning hole, i.e. the profiling clamp 310 and the workpiece semi-product corresponding to the target workpiece do not need to be connected by an additional fixing member, but can be fixed by relying on the engagement relationship therebetween. The positioning and clamping are achieved by the accurate fitting of the profiling clamp 310 and the workpiece semi-product corresponding to the target workpiece 300, the stability of the target workpiece 300 in the processing, assembly and other processes is ensured, the positioning surface of the profiling clamp 310 is used as the reference surface of the target workpiece 300, and the accuracy of the target workpiece 300 in the processing, assembly and other processes is ensured.

[0123] For the same shape of the target workpiece 300, the profiling clamp 310 provided in the embodiment can be repeatedly used, and therefore the reference surface does not need to be restructured multiple times in the processing procedure. The "reference surfaces" of multiple target workpieces 300 are consistent, the processing efficiency is improved, the manual intervention error is reduced, and the consistency of the target workpieces 300 is ensured.

[0124] Embodiment 3:

[0125] Combination Figure 4a and Figure 4b As shown, by predicting the deformation and vibration that the target workpiece 400 may generate during the processing, the bottom of the target workpiece 400 is set as the fixture contact area 401.

[0126] Furthermore, the target workpiece 400 itself has a screw hole 402. In this embodiment, the extension direction of part of the fixture contact area 401 is perpendicular to the extension direction of the screw hole 402, so as to fix the semi-finished target workpiece 400 to the contouring position of the contouring fixture through the screw hole 416.

[0127] It is understood that in other alternative embodiments, the contour jig 410 does not have positioning holes, that is, there is no need for additional fasteners to connect the contour jig 410 and the workpiece semi-finished product corresponding to the target workpiece. Fixing can be achieved by relying on the interlocking relationship between the two. Positioning and clamping are achieved by the precise fit between the contour jig 410 and the workpiece semi-finished product corresponding to the target workpiece 400.

[0128] In an exemplary embodiment, the contouring fixture 410 further includes a second positioning hole 414, and the workpiece processing method further includes: fixing the contouring fixture 410 onto the base plate 420 by means of a second fastener 415.

[0129] Furthermore, the base plate 420 in this embodiment also includes a positioning pin 421, and the bottom of the contour jig 410 is provided with a pin hole (not shown in the figure). The pin hole matches the positioning pin 421, and the positioning pin 421 can engage with the pin hole. By setting the pin hole and the positioning pin 421, the contour jig 410 can be quickly positioned on the base plate 420, thereby further improving the workpiece processing efficiency.

[0130] In this embodiment, the positioning surface 412 includes the surface of the contour jig 410. Using the positioning surface 412 as a reference, the accuracy of the target workpiece 200 in processing, assembly and other processes is guaranteed.

[0131] It is understood that the contouring fixtures shown in Examples 1 to 3 all have at least two mutually perpendicular surfaces as positioning surfaces. Therefore, the positioning surfaces can be directly used as reference surfaces during the processing, which can ensure the accuracy and efficiency of the target workpiece in processing, assembly and other processes. In addition, the contouring fixtures can be reused multiple times without having to reconstruct the reference surface for each processing, which greatly improves processing efficiency.

[0132] like Figure 5 As shown, this disclosure also provides a workpiece processing system 500, including:

[0133] The model construction module 51 is configured to analyze the clamp contact area of the target workpiece, and construct a profiling clamp model based on geometric features of the clamp contact area.

[0134] The first processing module 52 is configured to process the workpiece semi-product, and the workpiece semi-product includes the processed clamp contact area.

[0135] The clamp preparation module 53 is configured to prepare a profiling clamp based on the profiling clamp model, and the profiling clamp includes a profiling position and a positioning surface, and the shape and size of the profiling position are matched with the shape and size of the clamp contact area.

[0136] The second processing module 54 is configured to clamp the clamp contact area of the workpiece semi-product on the profiling position of the profiling clamp to make the clamp contact area fit the surface of the profiling position, and perform subtractive processing on the remaining part of the workpiece semi-product based on the positioning surface to obtain the target workpiece.

[0137] The embodiments of the present disclosure further provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the program to implement the workpiece processing method described in various embodiments of the present disclosure.

[0138] Figure 6 A hardware structure diagram of an electronic device according to an embodiment of the present disclosure is shown. As shown in the figure, Figure 6 The electronic device 60 can include at least one processor 61, a memory 62 (for example, a non-volatile memory), an internal memory 63, and a communication interface 64, and the at least one processor 61, the memory 62, the internal memory 63, and the communication interface 64 are connected together via a bus 65. The at least one processor 61 executes at least one computer readable instruction stored or encoded in the memory 62.

[0139] It should be understood that the computer executable instructions stored in the memory 62, when executed, cause the at least one processor 61 to perform various operations and functions described above in conjunction with Figure 1 the various embodiments of the present disclosure.

[0140] In the embodiments of the present disclosure, the electronic device 60 can include but is not limited to: a personal computer, a server computer, a workstation, a desktop computer, a laptop computer, a notebook computer, a mobile electronic device, a smart phone, a tablet computer, a cellular phone, a personal digital assistant (PDA), a handheld system, a messaging device, a wearable electronic device, a consumer electronic device, and the like.

[0141] The embodiment of the present disclosure further provides a computer readable medium, and the computer readable medium carries computer execution instructions. When the computer execution instructions are executed by a processor, various operations and functions of the sampling detection method for a wafer described in various embodiments of the present disclosure can be implemented.

[0142] The computer readable medium in the present disclosure can be a computer readable signal medium or a computer readable storage medium or any combination of the two. The computer readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, system or device, or any combination of the above. More specific examples of the computer readable storage medium can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system or device.

[0143] In the present disclosure, the computer readable signal medium can include a data signal propagating in a baseband or as a carrier wave in a propagated data signal, which carries computer readable program code. Such a propagated data signal can take various forms, including but not limited to an electromagnetic signal, an optical signal or any suitable combination of the above. The computer readable signal medium can also be any computer readable medium other than the computer readable storage medium that can send, propagate or transmit the program for use by or in connection with an instruction execution system, system or device. The program code contained on the computer readable medium can be transmitted using any suitable medium, including but not limited to wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0144] Those skilled in the art will appreciate that embodiments of the present disclosure can be provided as a method, system or computer program product. Therefore, the present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Moreover, the present disclosure can take the form of a computer program product implemented on one or more computer usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.

[0145] The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other processing device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other processing device to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions specified in the flowchart block or blocks. Figure 1 The flowchart and / or block diagram in the variations can illustrate a method, system and computer program product according to embodiments of the disclosure. It will be understood that each block of the flowchart and / or block diagram, and combinations of blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processing device or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart and / or block diagram block or blocks. Figure 1 The flowchart and / or block diagram in the variations can illustrate a method, system and computer program product according to embodiments of the disclosure. It will be understood that each block of the flowchart and / or block diagram, and combinations of blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processing device or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart and / or block diagram block or blocks.

[0146] It will be apparent to those skilled in the art that the present disclosure is not limited to the above-described exemplary embodiments, and that the present disclosure can be implemented in other specific forms without departing from the spirit or essential characteristics of the present disclosure. Thus, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the disclosure to be indicated by the appended claims rather than the above description, and all changes which come within the meaning and range of equivalency of the claims are intended to be embraced therein. No reference signs in the claims should be considered to be limiting the claim being referenced.

[0147] Further, it should be appreciated that although the present specification describes exemplary embodiments, not every embodiment contains all features that are described in the specification. The description of features or categories of features in either the specification or claims should not be read as requiring those features or categories of features to be present in any particular embodiment. The specification and claims should be read to identify essential features of the disclosure and preferred embodiments.

Claims

1. A workpiece processing method, characterized in that, include: Analyze the clamp contact area of ​​the target workpiece, and construct a contour clamp model based on the geometric features of the clamp contact area; Processing a workpiece semi-finished product, wherein the workpiece semi-finished product includes the processed fixture contact area; Based on the aforementioned contouring fixture model, a contouring fixture is prepared. The contouring fixture includes contouring positions and positioning surfaces, and the shape and size of the contouring positions match the shape and size of the contact area of ​​the fixture. The clamping contact area of ​​the workpiece semi-finished product is clamped onto the contouring position of the contouring fixture so that the clamping contact area fits against the surface of the contouring position. Using the positioning surface as a reference, the remaining part of the workpiece semi-finished product is subjected to subtractive processing to obtain the target workpiece.

2. The workpiece processing method according to claim 1, characterized in that, Analyze the fixture contact area of ​​the target workpiece, including: Perform structural analysis on the target workpiece to obtain a three-dimensional model of the target workpiece in the current process; The deformation and vibration that may occur in the target workpiece during processing are predicted, and based on the prediction results, the fixture contact area of ​​the target workpiece is determined. The fixture contact area includes the area of ​​insufficient rigidity, the reference surface and / or the area of ​​maximum deformation.

3. The workpiece processing method according to claim 1, characterized in that, The contoured surface includes curved surfaces and / or planes; and / or, The contouring fixture also includes a main body, the positioning surface being at least two surfaces of the main body, the contouring position being recessed on the positioning surface of the main body, the depth of the contouring position being less than or equal to the thickness of the contact area of ​​the fixture, or the contouring position being protruding on the positioning surface of the main body.

4. The workpiece processing method according to claim 3, characterized in that, Clamping the fixture contact area of ​​the semi-finished workpiece onto the contouring position of the contouring fixture so that the fixture contact area fits against the surface of the contouring position includes: The fixture contact area of ​​the semi-finished workpiece is nested within the contour-following position, and the fixture contact area is engaged with the contour-following position; and / or, The contour-following position is nested in the fixture contact area of ​​the workpiece semi-finished product, and the fixture contact area is engaged with the contour-following position.

5. The workpiece processing method according to claim 1, characterized in that, The workpiece processing method further includes: When the clamping contact area includes a screw hole, the contouring clamp includes a corresponding first positioning hole. The clamping contact area of ​​the workpiece semi-finished product is clamped on the contouring position of the contouring clamp so that the clamping contact area fits with the contouring positioning surface. Then, the screw hole and the first positioning hole are connected by a fastener.

6. The workpiece processing method according to claim 1, characterized in that, The workpiece processing method further includes: after preparing a contour jig based on the contour jig model, fixing the contour jig onto the base plate.

7. The workpiece processing method according to claim 1, characterized in that, The workpiece processing method further includes: The contouring position of the contouring fixture is scanned using a coordinate measuring machine and compared with the fixture contact area in the 3D model of the target workpiece. It is then determined whether the error between the contouring position of the contouring fixture and the fixture contact area is less than or equal to a first preset threshold; and / or, The clamping contact area of ​​the standard target workpiece is clamped in the contouring position of the contouring fixture, and it is determined whether the gap between the standard target workpiece and the contouring position of the contouring fixture is less than or equal to a second set threshold.

8. A workpiece processing system, characterized in that, The system includes: The model building module is used to analyze the fixture contact area of ​​the target workpiece and build a contour fixture model based on the geometric features of the fixture contact area. The first processing module is used to process workpiece semi-finished products, the workpiece semi-finished products including the processed fixture contact area; A fixture preparation module is used to prepare a contouring fixture based on the contouring fixture model. The contouring fixture includes contouring positions and positioning surfaces. The shape and size of the contouring positions match the shape and size of the contact area of ​​the fixture. The second processing module is used to clamp the fixture contact area of ​​the workpiece semi-finished product onto the contouring position of the contouring fixture so that the fixture contact area fits with the surface of the contouring position. Using the positioning surface as a reference, the module performs subtractive processing on the remaining part of the workpiece semi-finished product to obtain the target workpiece.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the workpiece machining method as described in any one of claims 1 to 7.

10. A computer-readable medium, characterized in that, The computer-readable medium carries computer-executable instructions, which, when executed by a processor, are used to implement the workpiece processing method as described in any one of claims 1 to 7.

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