Machining method for high-precision titanium alloy special-shaped structural part

Abstract

The invention relates to the technical field of titanium alloy special-shaped structural parts, in particular to a machining method of a high-precision titanium alloy special-shaped structural part. The invention provides a machining method for a high-precision titanium alloy special-shaped structural part. The machining method comprises the steps that benchmark machining is conducted, a special-shaped structural part body and a process chuck are milled, and the special-shaped structural part body and the process chuck are integrally formed; a first cutting project: processing a first preset displacement of the periphery of the special-shaped structural part main body by taking the process chuck as a processing reference to form a first special-shaped structural part main body; in the second cutting project, the process chuck of the first cutting project serves as the machining standard, and the first special-shaped structural part body is machined to the target size of the special-shaped structural part; and in the third cutting process, the process chuck of the second cutting process serves as the machining standard, and the process chuck is removed. According to the technical scheme, the problems that in the product manufacturing process, clamping alignment difficulty is large, deformation is large, the size is out of tolerance, and machining efficiency is low are solved, the manufacturing period is shortened, the product quality is improved, and the overall manufacturing cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of titanium alloy special-shaped structural parts, and in particular to a processing method of high-precision titanium alloy special-shaped structural parts. Background Art

[0002] Titanium alloy has many excellent properties such as high hardness, low density, high specific strength, fatigue resistance, corrosion resistance, high and low temperature resistance, etc. It is widely used in aerospace, chemical industry, shipbuilding, and marine engineering, greatly improving the performance of equipment.

[0003] Small-sized, high-precision titanium alloy special-shaped structural parts have the following characteristics: titanium alloy materials have high hardness, large cutting force, high cutting temperature, difficult processing, and high tool costs; parts have complex structures, small sizes, and small processing space; parts are thin-walled ribbed plate structures, and are greatly deformed after processing; parts are special-shaped structural parts, and are difficult to clamp and align; parts are special-shaped ribbed plate structures, and the processing allowance is large. If the cradle five-axis machining center is used conventionally, in order to ensure the processing quality, the cutting parameters are small, the processing time is long, the processing efficiency is low, and the processing cost is high. At the same time, the ribbed plate structure is easy to deform during the processing, the size control is difficult, and the quality risk is relatively large. Summary of the invention

[0004] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, the present disclosure provides a method for processing a high-precision titanium alloy special-shaped structural part, comprising:

[0006] Benchmark processing, milling the special-shaped structural part body and the process chuck, the special-shaped structural part body and the process chuck are integrally formed;

[0007] A first cutting process, using the process chuck as a processing reference, processes a first preset displacement around the four sides of the special-shaped structural component body to form a first special-shaped structural component body;

[0008] A second cutting process, using the process chuck of the first cutting process as a processing reference, to process the first special-shaped structural part body to a target size of the special-shaped structural part;

[0009] In the third cutting process, the process chuck of the second cutting process is used as a processing reference to remove the process chuck.

[0010] In a feasible implementation manner, the hexagon is processed in the reference processing, and the verticality of each surface of the processed hexagon is 0.02 mm to 0.05 mm. A processing allowance of 3 mm to 5 mm is reserved in the length and width directions of the processed hexagon.

[0011] In a feasible implementation manner, the verticality of each face of the processed hexagon is 0.05 mm, and a 3 mm processing allowance is reserved in the length and width directions of the processed hexagon.

[0012] In a feasible implementation manner, in the benchmark processing, the height of the process chuck is set to 40 mm to 50 mm.

[0013] In a feasible implementation manner, in the first cutting process, the two side surfaces in the length direction are processed first, and the first preset displacement is set to reserve a processing allowance of 0.5 mm to 1 mm around the periphery.

[0014] In a feasible implementation manner, the first preset displacement is set to reserve a processing allowance of 0.5 mm at the periphery.

[0015] In a feasible implementation manner, the first cutting process and the third cutting process are configured as wire cutting.

[0016] In a feasible implementation manner, the second cutting process is configured as cradle five-axis machining.

[0017] In a feasible implementation, it also includes:

[0018] Final inspection: comprehensive dimension inspection according to design status.

[0019] In a feasible implementation, it also includes:

[0020] Grinding: Grinding the processed surface to make it smooth and remove burrs.

[0021] Compared with the prior art, the present invention at least includes the following beneficial effects: the reference processing of the present invention, milling processing of the special-shaped structural part body and the process chuck, the special-shaped structural part body and the process chuck are formed in one piece, the process chuck is reserved in the height direction, as the whole process processing reference, realizes the reference unification, solves the problems of difficult clamping and alignment, large deformation, dimensional deviation, low processing efficiency, etc. in the product manufacturing process; and through the first cutting project, the process chuck is used as the processing reference, and the first preset displacement around the four sides of the special-shaped structural part body is processed to form the first special-shaped structural part body, and the second cutting project uses the process chuck of the first cutting project as the processing reference to process the first special-shaped structural part body to the target size of the special-shaped structural part, which greatly reduces the occupancy time of the high-precision cradle five-axis machine tool, realizes high-quality and efficient manufacturing of typical difficult-to-process parts, shortens the manufacturing cycle and improves product quality, and greatly reduces the overall manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0025] Figure 1 This is one of the exemplary structural schematic diagrams of the process disclosed in the present invention in which the chuck and the first special-shaped structural member body are integrally formed;

[0026] Figure 2 The second schematic diagram of the exemplary structure of the process disclosed in the present invention in which the chuck and the first special-shaped structural member are integrally formed;

[0027] Figure 3 This is a schematic diagram of an example structure of a chuck for a process of removing target size from a special-shaped structural part disclosed in the present invention.

[0028] in, Figures 1 to 3 The corresponding relationship between the reference numerals and the component names is: 1-process chuck; 2-first special-shaped structural part body; 3-target size of the special-shaped structural part. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0031] At present, small-sized, high-precision titanium alloy special-shaped structural parts have the following characteristics: titanium alloy materials have high hardness, large cutting force, high cutting temperature, difficult processing, and high tool costs; parts have complex structures, small sizes, and small processing space; parts are thin-walled ribbed plate structures, and are greatly deformed after processing; parts are special-shaped structural parts, which are difficult to clamp and align; parts are special-shaped ribbed plate structures, and the processing allowance is large. If the cradle five-axis machining center is used conventionally, in order to ensure the processing quality, the cutting parameters are small, the processing time is long, the processing efficiency is low, and the processing cost is high. At the same time, the ribbed plate structure is easy to deform during the processing, the size control is difficult, and the quality risk is relatively large.

[0032] Based on this, the embodiment of the present disclosure provides a method for processing high-precision titanium alloy special-shaped structural parts. The benchmark processing disclosed in the present disclosure includes milling the special-shaped structural part body and the process chuck. The special-shaped structural part body and the process chuck are formed in one piece. The process chuck is reserved in the height direction as the processing benchmark for the entire process, which realizes the unified benchmark and solves the problems of difficult clamping and alignment, large deformation, dimensional deviation, and low processing efficiency in the product manufacturing process; and through the first cutting project, the process chuck is used as the processing benchmark to process the first preset displacement around the special-shaped structural part body to form the first special-shaped structural part body. The second cutting project uses the process chuck of the first cutting project as the processing benchmark to process the first special-shaped structural part body to the target size of the special-shaped structural part, which greatly reduces the occupancy time of the high-precision cradle five-axis machine tool, realizes high-quality and efficient manufacturing of typical difficult-to-process parts, shortens the manufacturing cycle, improves product quality, and greatly reduces the overall manufacturing cost.

[0033] The processing method of the high-precision titanium alloy special-shaped structural part is described in detail below through a specific embodiment:

[0034] Reference Figures 1 to 3 As shown, the present disclosure provides a method for processing a high-precision titanium alloy special-shaped structural part, comprising:

[0035] Benchmark processing, milling of special-shaped structural parts and process chucks, special-shaped structural parts and process chucks are integrated into one;

[0036] The first cutting process uses the process chuck as a processing reference to process a first preset displacement around the main body of the special-shaped structural part to form the main body of the first special-shaped structural part;

[0037] The second cutting process uses the process chuck of the first cutting process as a processing reference to process the main body of the first special-shaped structural part to a target size of the special-shaped structural part;

[0038] In the third cutting process, the process chuck of the second cutting process is used as a processing reference to remove the process chuck.

[0039] The disclosed benchmark processing includes milling the main body of the special-shaped structural part and the process chuck, and the main body of the special-shaped structural part and the process chuck are formed in one piece. The process chuck is reserved in the height direction as a benchmark for the entire processing process, thereby realizing unified benchmarks and solving the problems of difficult clamping and alignment, large deformation, dimensional deviation, and low processing efficiency in the product manufacturing process. In addition, through the first cutting project, the process chuck is used as a processing benchmark to process the first preset displacement around the main body of the special-shaped structural part to form the first special-shaped structural part main body. The second cutting project uses the process chuck of the first cutting project as a processing benchmark to process the first special-shaped structural part main body to the target size of the special-shaped structural part, thereby greatly reducing the occupancy time of the high-precision cradle five-axis machine tool, realizing high-quality and efficient manufacturing of typical difficult-to-process parts, shortening the manufacturing cycle, improving product quality, and greatly reducing the overall manufacturing cost.

[0040] Specifically, the processing method disclosed in the present invention can be adapted to various forms of special-shaped machine components. Figures 1 to 3 The special-shaped structural member with a triangular end is used as an example for detailed description:

[0041] First, check the conventional size of the cabin blank. Perform benchmark processing, mill the special-shaped structural part body and process chuck, the special-shaped structural part body and process chuck are formed in one piece, and the process chuck is used as the processing benchmark in the entire processing method flow to ensure the unified benchmark so that the processing benchmark of the special-shaped structural part entering any equipment is consistent to ensure processing accuracy and processing quality.

[0042] In the first cutting process, the process chuck is used as the processing reference to process the first preset displacement around the main body of the special-shaped structural part to form the main body of the first special-shaped structural part. The first cutting process is the rough processing process of the special-shaped structural part. The wire cutting method can be selected for processing to simplify the processing flow. Specifically, the product is clamped on the wire cutting workbench to process the two side surfaces in the length direction; the two side surfaces are cut along the length direction, and the first preset displacement is reserved around the special-shaped triangle. The flat areas on both sides of the hook position are processed flush, and the product is rotated 90° and clamped on the wire cutting workbench to process the two side surfaces in the width direction; the two side surfaces are cut along the width direction, and the first preset displacement is reserved for the special-shaped area. The inner spherical surface of the hook position is processed as an inclined surface, and other areas of the inner and outer shapes of the hook position are processed in place.

[0043] In the second cutting process, the process chuck of the first cutting process is used as the processing reference to process the main body of the first special-shaped structural part to the target size of the special-shaped structural part; the second cutting process is the finishing process of the special-shaped structural part. The second cutting process can use the cradle five-axis machining center for finishing to ensure the processing accuracy. Specifically, determine the processing reference, and use the process chuck shape as the processing reference; milling to remove the excess on the two sides of the triangle to ensure the angle between the side and the axis. Among them, the acute angle and obtuse angle formed by the triangle and the rib plate are not allowed to be cleared, and can be removed by subsequent wire cutting to reduce the time occupied by the cradle five-axis processing; then milling to remove the excess on the three sides of the triangle, and the three sides are conical; milling the through hole and 90° countersunk hole on the triangle; milling the inner spherical surface of the hook-shaped position; milling the two side depressions of the hook-shaped position; milling the arc surface on one side of the rib plate; milling the two sunken notches and arc surface on the other side of the rib plate; milling the inclined surfaces on both sides of the rib plate;

[0044] In the third cutting process, the process chuck of the second cutting process is used as the processing reference. The process chuck is removed and wire cutting can be used to clean the roots. The processing reference is determined and the shape of the process chuck is used as the processing reference. The product is clamped on the wire cutting workbench, the acute angle and obtuse angle formed by the processing triangle and the rib plate are cleaned, and the process chuck is removed to coordinate the total height to obtain the final special-shaped structural product.

[0045] In some embodiments, the hexagon is processed in the benchmark processing, the verticality of each surface of the hexagon is 0.02 mm to 0.05 mm, and 3 mm to 5 mm processing allowance is reserved in the length and width directions of the hexagon.

[0046] In this embodiment, the verticality of each face of the hexagon is 0.02 mm to 0.05 mm, and a 3 mm machining allowance is reserved in the length and width direction of the hexagon. The minimum verticality accuracy of each face of the hexagon is 0.02 mm. When the verticality is greater than 0.05 mm as a benchmark, it affects the machining accuracy; when the length and width direction of the hexagon are less than 3 mm, the clamping allowance is insufficient; when the reserve is greater than 5 mm, the material is wasted. Further, the specific dimensions selected in the present disclosure are that the verticality of each face of the hexagon is 0.05 mm, and a 3 mm machining allowance is reserved in the length and width direction of the hexagon.

[0047] Specifically, the processing steps of the milling machine to process the hexagonal shape are to prepare the workpiece, ensure that the material is suitable for milling and the size meets the requirements of the drawing; use a fixture to fix the workpiece on the workbench to ensure that it will not move during processing; select a suitable milling cutter according to the processing requirements, such as an end mill or a face mill; adjust the milling machine parameters, including feed speed, cutting speed, etc., to ensure processing efficiency and quality; use a dividing head or a rotary table to position the workpiece to the first processing surface to ensure accurate positioning; start processing the first surface, pay attention to controlling the milling depth to avoid cutting too deep at one time; after processing one surface, use the dividing head to rotate the workpiece and adjust it to the next surface to be processed; repeat the above steps and process the remaining five surfaces in turn until the hexagonal shape is completed. Furthermore, during the processing process, the workpiece size is checked regularly to ensure that it meets the tolerance requirements of the drawing. After all six surfaces are processed, a final inspection is carried out to confirm the dimensional accuracy, and subsequent processing such as deburring and chamfering is performed as needed to complete the entire processing process.

[0048] In some embodiments, in the benchmark processing, the height of the process chuck is set to 40 mm to 50 mm. In this embodiment, when the height of the process chuck of the present disclosure is set to less than 40 mm, the process chuck is too small to adapt to the clamping of all equipment; and when the height of the process chuck is set to more than 40 mm, it wastes materials and generates unnecessary subsequent processes.

[0049] In some embodiments, in the first cutting process, the two side surfaces in the length direction are processed first, and the first preset displacement is set to reserve a processing allowance of 0.5 mm to 1 mm around the periphery.

[0050] In this embodiment, the first preset displacement of the present disclosure is set to reserve 0.5 mm to 1 mm around the periphery. When the first preset displacement is less than 1 mm, the second cutting process cannot be performed, and when the first preset displacement is greater than 1 mm, the time occupied by the second cutting process is increased. Further, the first preset displacement of the present disclosure is specifically set to reserve 0.5 mm of processing allowance around the periphery.

[0051] In some embodiments, a final inspection is also included, in which the dimensions are fully inspected according to the design status. The final inspection mainly inspects the dimensions in full according to the design status to ensure the dimensional accuracy of the finished product.

[0052] In some embodiments, grinding is also included, grinding the processed surface to make it smooth and smooth, and removing burrs. Specifically, benchwork grinding is used to grind the processed surface to make it smooth and smooth, and remove burrs, so as to ensure the processing accuracy of the finished product.

[0053] In the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0054] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present disclosure.

[0055] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A method for processing high-precision titanium alloy special-shaped structural parts, characterized in that: include: Benchmark processing, milling the special-shaped structural part body and the process chuck, the special-shaped structural part body and the process chuck are integrally formed; A first cutting process, using the process chuck as a processing reference, processes a first preset displacement around the four sides of the special-shaped structural component body to form a first special-shaped structural component body; A second cutting process, using the process chuck of the first cutting process as a processing reference, to process the first special-shaped structural part body to a target size of the special-shaped structural part; In the third cutting process, the process chuck of the second cutting process is used as a processing reference to remove the process chuck.

2. The method for processing high-precision titanium alloy special-shaped structural parts according to claim 1, characterized in that: In the benchmark processing, the hexagon is processed, and the verticality of each surface of the processed hexagon is 0.02 mm to 0.05 mm. A processing allowance of 3 to 5 mm is reserved in the length and width directions of the processed hexagon.

3. The method for processing high-precision titanium alloy special-shaped structural parts according to claim 2, characterized in that: The verticality of each face of the processed hexagon is 0.05 mm, and a processing allowance of 3 mm is reserved in the length and width directions of the processed hexagon.

4. The method for processing high-precision titanium alloy special-shaped structural parts according to claim 1, characterized in that: In the benchmark processing, the height of the process chuck is set to 40 mm to 50 mm.

5. The method for processing high-precision titanium alloy special-shaped structural parts according to claim 1, characterized in that: In the first cutting process, the two side surfaces in the length direction are processed first, and the first preset displacement is set to reserve a processing allowance of 0.5 mm to 1 mm around the periphery.

6. The method for processing high-precision titanium alloy special-shaped structural parts according to claim 5, characterized in that: The first preset displacement is set to reserve a processing allowance of 0.5 mm around the periphery.

7. The method for processing high-precision titanium alloy special-shaped structural parts according to claim 1, characterized in that: The first cutting process and the third cutting process are configured as wire cutting.

8. The method for processing high-precision titanium alloy special-shaped structural parts according to claim 1, characterized in that: The second cutting process is set as cradle five-axis machining.

9. The method for processing high-precision titanium alloy special-shaped structural parts according to claim 1, characterized in that: Also includes: Final inspection: comprehensive dimension inspection according to design status.

10. The method for processing high-precision titanium alloy special-shaped structural parts according to claim 1, characterized in that: Also includes: Grinding: Grinding the processed surface to make it smooth and remove burrs.

Images