A precision forging blade final forging die standard part, machining method, repair method and application
By marking and drilling holes on the surface of the final forging of precision forged blades to create standard parts, the problems of low efficiency and poor precision in die repair in the existing technology are solved, enabling fast and accurate die repair and improving the performance of the final forging die.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AECC AVIATION POWER CO LTD
- Filing Date
- 2023-10-31
- Publication Date
- 2026-06-02
Smart Images
Figure CN117516338B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of precision forging blade profile inspection technology, specifically relating to a standard part of the final forging die for precision forging blades, its processing method, its repair method, and its application. Background Technology
[0002] The airfoil of a precision-forged blade consists of multiple detection sections, each with multiple feature points. By controlling the dimensions of the feature points in each detection section, the airfoil dimensions of the precision-forged blade can be monitored.
[0003] The final forging process is a crucial step in the precision forging of blades, and the dimensions of the die used in this process determine the final quality of the forged blades. Typically, during the final forging process, as the blade profile of the final forging die wears, it needs to be manually repaired to ensure the blade's dimensions meet requirements. The current repair process for the final forging die involves measuring the required repair location on the die using a reference point. This method is inefficient, lacks operability, and is prone to errors in the repair location, resulting in poor performance of the repaired final forging die. Furthermore, preparation time before each repair session is 1-2 hours. Summary of the Invention
[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a standard part of the final forging die for precision forging blades, a processing method, a clamping and repair method and application, so as to quickly and accurately clamp and repair the blade shape of the final forging die.
[0005] To achieve the above objectives, the present invention employs the following technical solution:
[0006] This invention discloses a processing method for a standard part of a precision forging blade final forging die. A precision forging blade final forging part with the same dimensions as the die cavity of the precision forging blade final forging die to be repaired is selected. Based on the detection cross section of the precision forging blade and the position of the characteristic detection point of each detection cross section, the detection cross section position and characteristic detection point are marked on the surface of the selected precision forging blade final forging part and holes are drilled to obtain the standard part of the precision forging blade final forging die.
[0007] Preferably, a milling cutter is used for drilling.
[0008] Preferably, when the blade profile width of the final forged blade is <50mm, a tool with a diameter of 3mm is selected; when 50mm ≤ the blade profile width of the final forged blade is ≤80mm, a tool with a diameter of 6mm is selected; when the blade profile width of the final forged blade is <80mm, a tool with a diameter of 8mm is selected.
[0009] Preferably, the precision-forged blade has 5 detection sections.
[0010] The present invention also discloses a processing method for a precision forging blade final forging die standard part, wherein the precision forging blade final forging die standard part has several inspection holes drilled on its surface.
[0011] Preferably, the diameter of the detection hole is 3 to 8 mm.
[0012] Preferably, the number of detection holes is consistent with the number of locations that need to be detected in the final forging die of the precision forging blade to be repaired.
[0013] This invention also discloses a method for repairing a standard part of a precision forging blade final forging die. The standard part of the precision forging blade final forging die is placed in the mold cavity of the corresponding precision forging blade final forging die. The corresponding points of the precision forging blade final forging die are marked through the detection holes of the standard part of the precision forging blade final forging die, and the position on the surface of the precision forging blade final forging die cavity that needs to be repaired is found, thereby realizing the repair of the precision forging blade final forging die.
[0014] Preferably, a marker pen is used for marking.
[0015] The present invention also discloses the application of the above-mentioned standard parts for the final forging die of precision forging blades in the repair of the final forging die of precision forging blades.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] This invention provides a method for processing a standard part of a precision forging blade final forging die. Holes are drilled on the surface of the precision forged blade final forging part, with dimensions matching the cavity size of the die to be repaired. This ensures that the standard part of the precision forging blade final forging die matches the dimensions of the die, thereby guaranteeing that the standard part of the precision forging blade final forging die remains stationary. Holes are also drilled on the surface of the standard part of the precision forging blade final forging die according to the detection section position and characteristic detection points of the final forged blade to be repaired. This ensures that the position of the drilled holes matches the detection position of the blade's detection section, thus guaranteeing the accuracy of the processed standard part of the precision forging blade final forging die. The entire processing method is simple to operate and low in cost. The resulting standard part of the precision forging blade final forging die ensures that the blade profile can be quickly and accurately located and repaired during final forging die blade trimming. When using standard parts for final forging dies of precision forged blades for clamp repair, simply place the prepared standard part into the cavity of the final forging die, mark the corresponding position of the blade shape on the final forging die using the holes in the standard part, and then complete the clamp repair at the marked position on the final forging die. The clamp repair method is simple and quick, taking only 5-10 minutes, and can improve the clamp repair efficiency and accuracy of blade shapes for large-volume precision forging dies. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the final forging of the precision-forged blade from Example 1;
[0019] Figure 2 This is a schematic diagram of a standard part for finishing the final forging die based on the blade profile of a precision forged blade.
[0020] Figure 3 This is a schematic diagram showing the placement of standard parts of the final forging die for precision forging blades within the cavity of the final forging die for precision forging blades.
[0021] Figure 4 This is a schematic diagram of the final forging die for the precision forging blade in Example 1; where A is the upper die and B is the lower die.
[0022] Among them, 1-inspection hole; 2-inspection section; 3-mold cavity; 4-final forging mold for precision forging blade; 5-precision forging blade. Detailed Implementation
[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.
[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0025] The present invention will now be described in further detail with reference to the accompanying drawings:
[0026] The present invention provides a method for processing standard parts of a precision forging blade final forging die, the specific steps of which are as follows:
[0027] 1) Select the final forging part of the precision forged blade. Select the corresponding final forging part of the precision forged blade according to the size of the mold cavity 3 of the final forging die 4 of the precision forged blade to be repaired.
[0028] 2) Marking points. Based on the detection section 2 of the precision forged blade 5 and the location of the characteristic detection points of each detection section 2, mark the location of the detection section 2 and the characteristic detection points on the selected final forging surface of the precision forged blade.
[0029] 3) Drill holes on the surface of the final forging of the precision forged blade. Based on the characteristic points marked on each section, use a milling cutter to drill inspection holes 1 on the blade profile surface of the final forging of the precision forged blade. The diameter of the cutter selected when drilling inspection holes 1 is shown in Table 1. This completes the fabrication of the standard part of the final forging die for the precision forged blade. The diameter of inspection holes 1 on the surface of the standard part of the final forging die for the precision forged blade is 3 to 8 mm.
[0030] Table 1. End mill specifications selected for different chord lengths of the blade profile.
[0031]
[0032] The present invention provides a method for repairing the standard part of the final forging die for precision forging blades obtained by the above method. The specific steps are as follows: When it is necessary to repair the final forging die 4 of precision forging blades, the standard part of the final forging die for precision forging blades of the corresponding size is placed in the cavity of the final forging die 4 of precision forging blades. Through the detection hole 1 pre-drilled on the standard part of the final forging die for precision forging blades, the corresponding point of the final forging die 4 of precision forging blades is marked with a marking pen to quickly find the position on the cavity surface of the final forging die 4 of precision forging blades that needs to be repaired, thereby achieving precise and fast die repair.
[0033] Example 1
[0034] 1) such as Figure 1 As shown, a precision-forged blade with a blade profile width of 30mm is selected.
[0035] 2) Based on the blade profile test results of the corresponding precision forged blade 5, mark the position of the test section 2 and the feature test points on the selected final forging surface of the precision forged blade, and test the thickness of the feature test points on each test section 2. The test results are shown in Table 2.
[0036] Table 2. Blade profile inspection results of the final forged blades.
[0037]
[0038] 3) Drill a 3mm detection hole 1 at the marked feature detection point using a milling cutter to obtain the following result: Figure 2 The standard part of the final forging die for precision forging blades is shown.
[0039] 4) such as Figure 3 As shown, the standard part of the final forging die for the precision forging blade is placed... Figure 4Inside the mold cavity 3 of the final forging mold 4 for a forged blade with a blade profile width of 30mm, the corresponding points of the final forging mold 4 are marked with a marker pen through the pre-opened inspection holes 1 on the surface of the standard part of the final forging mold. Based on the markings and the thickness detection results of the feature detection points, the position on the surface of the final forging mold cavity 3 that needs to be clamped is found, and the clamping of the final forging mold of the final forging blade is completed within 5 minutes.
[0040] Example 2
[0041] 1) Select a precision-forged blade with a blade profile width of 60mm.
[0042] 2) Based on the blade profile test results of the corresponding precision forged blade 5, mark the position of the test section 2 and the feature test points on the selected final forging surface of the precision forged blade, and test the thickness of the feature test points on each test section 2.
[0043] 3) Use a milling cutter to drill a 6mm inspection hole 1 at the marked feature inspection point to obtain the standard part of the final forging die for the precision forging blade.
[0044] 4) Place the standard part of the final forging die for the precision forged blade into the mold cavity 3 of the final forging die 4 for the corresponding blade profile with a width of 60mm. Mark the corresponding points of the final forging die 4 for the precision forged blade using a marker pen through the pre-drilled inspection holes 1 on the surface of the standard part of the final forging die for the precision forged blade. Based on the markings and the thickness detection results of the feature inspection points, find the position on the surface of the cavity 3 of the final forging die for the precision forged blade that needs to be clamped and repaired. The clamping and repair of the final forging die for the precision forged blade is completed within 5 minutes.
[0045] Example 3
[0046] 1) Select a precision-forged blade with a blade profile width of 100mm.
[0047] 2) Based on the blade profile test results of the corresponding precision forged blade 5, mark the position of the test section 2 and the feature test points on the selected final forging surface of the precision forged blade, and test the thickness of the feature test points on each test section 2.
[0048] 3) Use a milling cutter to drill an 8mm inspection hole 1 at the marked feature inspection point to obtain the standard part of the final forging die for the precision forging blade.
[0049] 4) Place the standard part of the final forging die for the precision forged blade into the mold cavity 3 of the final forging die 4 for the corresponding blade profile with a width of 100mm. Mark the corresponding points of the final forging die 4 for the precision forged blade using a marker pen through the pre-drilled inspection holes 1 on the surface of the standard part of the final forging die for the precision forged blade. Based on the markings and the thickness detection results of the feature inspection points, find the position on the surface of the cavity 3 of the final forging die for the precision forged blade that needs to be clamped and repaired. The clamping and repair of the final forging die for the precision forged blade is completed within 10 minutes.
[0050] The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solution based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.
Claims
1. A method for machining a standard part of a precision forging blade final forging die, characterized in that, Select a precision forged blade final forging part with the same dimensions as the mold cavity (3) of the precision forged blade final forging mold (4) to be repaired. According to the detection section (2) of the precision forged blade (5) and the position of the characteristic detection point of each detection section (2), mark the position of the detection section (2) and the characteristic detection point on the selected precision forged blade final forging part and drill holes with a milling cutter to obtain the standard part of the precision forged blade final forging mold. Among them, when the blade profile width of the final forging of the precision forged blade is <50 mm, a tool with a diameter of 3 mm is selected; when 50 mm ≤ the blade profile width of the final forging of the precision forged blade is ≤80 mm, a tool with a diameter of 6 mm is selected; when the blade profile width of the final forging of the precision forged blade is >80 mm, a tool with a diameter of 8 mm is selected; there are 5 detection sections (2) of the precision forged blade (5).
2. The precision forging blade final forging die standard part obtained by the processing method of the precision forging blade final forging die standard part according to claim 1, characterized in that, The surface of the standard part of the final forging die for the precision forging blade is drilled with several inspection holes (1).
3. A standard part for the final forging die of a precision forged blade according to claim 2, characterized in that, The diameter of the detection hole (1) is 3~8 mm.
4. A standard part for the final forging die of a precision forged blade according to claim 2, characterized in that, The number of the detection holes (1) is consistent with the number of locations that need to be detected in the final forging die (4) of the precision forging blade to be repaired.
5. A method for repairing standard parts of a precision forging blade final forging die, characterized in that, Place the standard part of the final forging die of the precision forging blade as described in any one of claims 2 to 4 into the mold cavity (3) of the corresponding final forging die of the precision forging blade (4), mark the corresponding point of the final forging die of the precision forging blade (4) through the detection hole (1) of the standard part of the final forging die of the precision forging blade, find the position on the surface of the cavity of the final forging die of the precision forging blade (4) that needs to be clamped, and realize the clamping repair of the final forging die of the precision forging blade.
6. The method for repairing a standard part of a precision forging blade final forging die according to claim 5, characterized in that, Use a marker pen to make the marks.
7. The application of the standard part of the final forging die for precision forging blade as described in any one of claims 2 to 4 in the final forging die (4) for repairing precision forging blades.