Method for machining repair of a conical hole of a component to be repaired

Abstract

The application provides a processing repair method for a conical hole of a component to be repaired, which comprises the following steps: a position detection step of detecting a deformed position of the conical hole of the component to be repaired and determining a maximum deformed amount of the deformed position and a maximum deformed position with the maximum deformed amount; a processing repair step of determining a final feed amount according to the maximum deformed amount of the maximum deformed position and processing and repairing an inner wall of the conical hole according to the final feed amount; and a condition judgment step of detecting a taper and a contact ratio of the conical hole after the processing and repairing, judging whether the taper and the contact ratio meet preset conditions, and re-executing the position detection step and the processing repair step when the conditions are not met. The position detection step and the processing repair step can effectively remove local high points, and the condition judgment step can ensure that the contact ratio and the taper of the conical hole after the repairing meet the requirements.

Description

Technical Field

[0001] This invention relates to the field of machining repair, and more specifically, to a method for machining and repairing tapered holes in a component to be repaired. Background Technology

[0002] In related technologies, the reactor coolant pump back roller is interference-fitted with the pump shaft tapered surface through a 10% taper bore (e.g., Figure 1 As shown, the reactor coolant pump impeller is interference-fitted with the conical surface of the pump shaft 2 through a 10% taper bore. Typically, the impeller side is disassembled and reassembled every 3 years. During this process, localized high points may appear on the conical surface of the impeller. During transient conditions such as cold pump start-up and shutdown, and unit temperature rise and fall, the impeller conical bore is prone to fretting corrosion, which can also cause localized high points on the conical surface.

[0003] A common repair method involves using a relatively flat area around the high point on the workpiece surface as a reference, and removing the planar high point through grinding. However, this method is only suitable for removing planar high points and requires rough grinding followed by fine grinding, resulting in low efficiency. Furthermore, the local high points in tapered holes are usually microscopic, leading to incomplete repair, low repair efficiency, and low precision. Therefore, a processing and repair method is needed that can quickly and effectively remove the local high points in tapered holes to ensure that the taper and contact rate of the tapered hole meet the requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an improved method for machining and repairing tapered holes in components to be repaired, in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: A method for machining and repairing a tapered hole in a component to be repaired, the method comprising the following steps:

[0006] Position detection step: Detect the deformation position of the conical hole of the component to be repaired, and determine the maximum deformation amount at the deformation position, and the maximum deformation position with the maximum deformation amount;

[0007] Processing and repair steps: Determine the final feed amount based on the maximum deformation at the maximum deformation position, and process and repair the inner wall of the tapered hole based on the final feed amount;

[0008] Condition judgment step: Detect the taper and contact rate of the processed and repaired conical hole, and determine whether the taper and contact rate meet the preset conditions. If they do not meet the conditions, re-execute the position detection step and the processing and repair step.

[0009] Preferably, the procedure before performing the position detection step includes:

[0010] Leveling steps: First leveling step and second leveling step;

[0011] First leveling step: clamp the part to be repaired onto the machine tool, set a dial indicator on the axial end face of the part to be repaired, bring the dial indicator close to and against the axial end face of the part to be repaired, rotate the part to be repaired to obtain the measurement data of the end face deviation of the part to be repaired, and level the part to be repaired according to the measurement data of the end face deviation of the part to be repaired.

[0012] The second leveling step is as follows: A first dial indicator and a second dial indicator are mounted on the tool post of the machine tool, and the tool post is moved into the tapered hole so that the first dial indicator moves to a first position close to the inner edge of the tapered hole and the second dial indicator moves to a second position close to the outer edge of the tapered hole. The part to be repaired is rotated so that the first and second dial indicators measure the value of the circumferential deviation of the part to be repaired, and the part to be repaired is leveled according to the value of the circumferential deviation of the part to be repaired.

[0013] Preferably, the position detection step includes:

[0014] Deformation position acquisition steps: Set up a dial indicator on the machine tool post, control the machine tool post to drive the dial indicator from one end of the tapered hole to the other end of the tapered hole according to a preset taper, and determine the deformation position of the tapered hole based on the reading of the dial indicator.

[0015] Preferably, it further includes:

[0016] The tapered hole is pre-divided into multiple intervals along the entire circumference, with each interval corresponding to a phase of the dial indicator; the dial indicator is mounted on the machine tool post, and the current phase of the dial indicator is recorded; the deformation position acquisition step is executed, and after each execution of the deformation position acquisition step, the dial indicator is adjusted to the next phase until all phases have been traversed, so as to determine the maximum deformation position and the maximum deformation amount.

[0017] Preferably, the processing and repair steps include:

[0018] Tool setting procedure: Install the tool on the machine tool tool post, and slowly bring the tool close to the tapered hole, so that the gap between the tool and the tapered hole is greater than the maximum deformation corresponding to the deformation position, and control the machine tool tool post to drive the tool out of the tapered hole from one end of the tapered hole according to the preset taper.

[0019] If it is determined that the tool has reached the maximum deformation position, the movement of the machine tool tool post is paused, and the current clearance between the tool and the maximum deformation position is measured.

[0020] determining whether twice the current gap is less than or equal to the minimum division of the machine tool feed; if yes, completing the tool setting operation; if no, increasing the feed amount of the tool until twice the current gap is less than or equal to the minimum division of the machine tool feed, and completing the tool setting step.

[0021] Preferably, the machining and repairing step further comprises:

[0022] increasing the feed amount on the basis of the current feed amount, wherein the increased feed amount is twice the maximum deformation amount, and machining the tapered hole according to a preset taper.

[0023] Preferably, detecting the taper of the tapered hole after machining and repairing, and determining whether the taper meets a preset condition comprises:

[0024] unloading the repaired component after repair machining, mounting a taper gauge on the tapered hole, and measuring the distance between the end face of the taper gauge and the end face of the tapered hole at four or eight equally spaced points along the circumferential direction by using a feeler gauge; when the difference between the maximum value and the minimum value among the values of all measuring points is less than or equal to a preset value, determining that the taper of the tapered hole is qualified. Preferably, detecting the contact rate of the tapered hole after machining and repairing, and determining whether the contact rate meets a preset condition comprises:

[0025] unloading the repaired component after repair machining, uniformly applying coating on a taper gauge, placing the taper gauge into the repaired tapered hole after repair machining, rotating the taper gauge along the circumferential direction, taking out the taper gauge, and calculating the contact proportion of the coating in the tapered hole, wherein the contact proportion is the contact rate of the tapered hole, and when the contact rate is greater than or equal to a preset value, determining that the contact rate is qualified; or

[0026] unloading the repaired component after repair machining, mounting a taper gauge on the tapered hole, and checking the gap between the taper gauge and the tapered hole by using a feeler gauge, wherein when the gap between the taper gauge and the tapered hole at a plurality of positions in the circumferential direction is less than or equal to a preset value, determining that the contact rate of the tapered hole is qualified.

[0027] Preferably, the preset condition for the taper is 10%, and the preset condition for the contact rate of the tapered hole is greater than or equal to 60%.

[0028] Preferably, when the gap between the taper gauge and the tapered hole at a plurality of positions in the circumferential direction is less than or equal to 0.02mm, the contact rate of the tapered hole is greater than or equal to 60%.

[0029] The beneficial effects of this invention are as follows: by detecting the deformation position of the conical hole of the component to be repaired, and determining the maximum deformation amount at the deformation position, as well as the maximum deformation position with the maximum deformation amount; determining the final feed amount based on the maximum deformation amount at the maximum deformation position, and processing and repairing the inner wall of the conical hole based on the final feed amount; it can accurately obtain the maximum deformation position of the conical hole, and reasonably adjust the processing parameters based on the maximum deformation position to ensure the smoothness of the conical hole after processing; it detects that the contact rate and taper of the repaired conical hole meet the preset conditions, and if they do not meet the conditions, it re-executes the position detection step and the processing and repair step, which can effectively remove local high points and ensure that the contact rate and taper of the conical surface of the repaired conical hole meet the requirements. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0031] Figure 1 This is an assembly diagram of the component to be repaired in some embodiments of the present invention;

[0032] Figure 2 This is a flowchart of a processing and repair method for a tapered hole in a component to be repaired, as described in some embodiments of the present invention.

[0033] Figure 3 This is a schematic diagram of the machine tool clamping of the component to be repaired in some embodiments of the present invention;

[0034] Figure 4 This is an assembly diagram of the contact rate detection of the conical hole of the component to be repaired in some embodiments of the present invention. Detailed Implementation

[0035] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0036] Figure 1The diagram illustrates the assembly of the component to be repaired in some embodiments of the present invention. In some embodiments, the component to be repaired may include a reactor coolant pump back roller 1, which is interference-fitted with the conical surface of the pump shaft 2 through a 10% taper bore. The reactor coolant pump back roller 1 is disassembled and reassembled every three years. During the disassembly and reassembly process, the conical surface of the reactor coolant pump back roller 1 will deform, and in some embodiments, this deformation location includes a local high point. In other embodiments, the component to be repaired 1 may also include a reactor coolant pump impeller (not shown), which also has a 10% taper bore interference-fitted with the conical surface of the pump shaft 2. During transient operating conditions such as cold pump start-up and shutdown, and unit temperature rise and fall, the conical bore 10 of the reactor coolant pump impeller is prone to fretting corrosion, which will also cause deformation of its conical surface. Based on the above factors, an improved method for machining and repairing the conical holes of the reactor coolant pump back wheel 1 and impeller (hereinafter collectively referred to as the parts to be repaired) is designed. This method can repair the deformed positions of the conical holes 10 of the parts to be repaired. The contact rate and taper of the repaired conical holes 10 meet the preset conditions, which effectively ensures the safe cooperation and operation of the conical holes 10 with other parts, such as ensuring the safe use of the reactor coolant pump back wheel 1 and impeller 2.

[0037] Specifically, such as Figure 2 As shown, this invention discloses a method for machining and repairing a tapered hole 10 in a component to be repaired. The method includes the following steps:

[0038] Position detection steps: Detect the deformation position of the tapered hole 10 of the part to be repaired, and determine the maximum deformation amount at the deformation position, as well as the maximum deformation position with the maximum deformation amount;

[0039] Processing and repair steps: Determine the final feed rate based on the maximum deformation at the maximum deformation location, and process and repair the inner wall of the tapered hole 10 according to the final feed rate;

[0040] Condition judgment step: Detect the taper and contact rate of the processed and repaired tapered hole 10, and determine whether the taper and contact rate meet the preset conditions. If they do not meet the conditions, repeat the position detection step and the processing and repair step.

[0041] Specifically, the preset condition for the taper of the tapered hole 10 is 10%, and the preset condition for the contact rate of the tapered hole 10 is greater than 60%.

[0042] In some embodiments, the procedure prior to performing the location detection step includes:

[0043] Leveling steps: First leveling step and second leveling step.

[0044] See also Figure 3In some embodiments, the first leveling step involves: clamping the component to be repaired onto a machine tool, and setting a dial indicator on the machine tool post; bringing the dial indicator close to and abutting against the axial end face of the component to be repaired, and rotating the component to be repaired to obtain measurement data of the end face deviation; and leveling the component to be repaired based on the measurement data of the end face deviation. Specifically, the dial indicator can be set at a position perpendicular to the axial end face of the component to be repaired and close to the tapered hole 10, as referenced. Figure 3 In some embodiments, position A can be set as needed. If the axial end face of the component to be repaired has a deviation, that is, it is not perpendicular to the rotation center axis of the machine tool, an axial thrust can be applied to the axial end face position by a leveling jack 3 according to the axial end face deviation, so that the axial end face deflects, thereby achieving axial leveling of the component to be repaired.

[0045] In some embodiments, the second leveling step is as follows: After setting up a first dial indicator and a second dial indicator on the machine tool post, and moving the machine tool post into the tapered hole 10 so that the first dial indicator moves to a first position near the inner edge of the tapered hole 10 (i.e., position B in the figure) and the second dial indicator moves to a second position near the outer edge of the tapered hole 10 (i.e., position C in the figure), the part to be repaired is rotated so that the first and second dial indicators measure the circumferential deviation of the part to be repaired, and the part to be repaired is leveled according to the value of the circumferential deviation. That is, the part to be repaired is moved radially so that the axial direction of the part to be repaired coincides with the axial direction of the tool post. Specifically, the part to be repaired is leveled by the machine tool chuck 4. It can be understood that positions B and C can be set according to the actual situation. Preferably, positions B and C are a certain distance apart in the axial direction to ensure more accurate measurement results.

[0046] In some embodiments, prior to performing the position detection step, the current taper of the taper bore 10 of the component to be repaired may be obtained. Specifically, a dial indicator is mounted on a machine tool post, the machine tool post is moved into the taper bore 10, and the dial indicator is moved to a first position abutting the inner edge of the taper bore 10 (i.e., Figure 3 Position B), this first position can be selected close to one end of the axial direction of the tapered hole 10. Zero the dial indicator and record the dial indicator reading G1 and the first machine tool coordinate Z1 (axial upward) at this time. Move the machine tool tool post to move the dial indicator along the spindle direction. When the dial indicator moves to the second position close to the outer edge of the tapered hole 10 (i.e., Figure 3 At position C (which can be selected close to the other end of the tapered bore 10 along the axial direction), record the dial indicator reading G2 and the second machine tool coordinate Z2 (axial upward). Calculate the current taper D of the tapered bore 10 of the part to be repaired according to the following formula:

[0047]

[0048] Determine if the current taper D is qualified. If not, proceed with the position detection step. If qualified, check the current contact rate of the taper hole 10 of the part to be repaired and determine if the current contact rate is qualified. If the contact rate is not qualified, proceed with the position detection step.

[0049] In some embodiments, the position detection step includes:

[0050] Deformation position determination steps: A dial indicator is mounted on the machine tool post. The machine tool post is controlled to move the dial indicator from one end of the tapered hole 10 to the other end of the tapered hole 10 according to a preset taper. The deformation position of the tapered hole 10 is determined based on the maximum value of the dial indicator reading. Specifically, the dial indicator is mounted on the machine tool post, and the machine tool post is moved to a first position close to the inner edge of the tapered hole 10 (i.e.,...). Figure 3 Position B), after compressing the dial indicator to a certain amount (e.g., 0.50mm), zero the dial indicator. Control the machine tool post to move the dial indicator from the first position of the tapered hole 10 to the second position near the outer edge of the tapered hole 10 according to the preset taper. Figure 3 (C position) Understandably, in some embodiments, a dial indicator is mounted on the machine tool post, and the machine tool post can also be moved to a second position near the outer edge of the taper hole 10 (i.e., Figure 3 Position the dial indicator (C position) to allow it to compress to a certain amount (e.g., 0.50 mm). Zero the dial indicator and control the machine tool post to move it from the second position of the taper hole 10 to the first position according to the preset taper. During the withdrawal process, observe the dial indicator reading. If the reading changes, determine the deformation position of the taper hole 10 based on the maximum value of the dial indicator reading. The dial indicator is mounted on the machine tool post, including:

[0051] A dial indicator is mounted on the machine tool post to record its current phase. The tapered hole 10 is pre-divided into multiple intervals along the entire circumference, with each interval corresponding to a phase of the dial indicator. Specifically, the tapered hole 10 is divided into multiple intervals along the entire circumference by rotating the part to be repaired. These intervals may include 4 or 8 intervals divided at equal intervals. For example, when divided into 4 intervals, the phases of the dial indicator corresponding to the four intervals are 0 degrees, 90 degrees, 180 degrees, and 270 degrees, respectively.

[0052] The deformation location acquisition step is executed, and after each execution, the current phase of the dial indicator is adjusted to the next phase until all phases have been traversed to determine the maximum deformation location and the maximum deformation amount. Specifically, if there is no deformation at the conical hole 10 (such as at a high point), the dial indicator reading should remain unchanged. If there is deformation at a high point or other location in the conical hole 10, the dial indicator reading at the corresponding location should change. At the same time, the deformation amount Gmax corresponding to the deformation location is recorded.

[0053] In some implementations, the processing and repair steps include:

[0054] Tool setting procedure: Install tool 5 on the machine tool tool post, and slowly bring tool 5 close to the inner circumferential wall of one axial end of the tapered hole 10. Measure the gap C between tool 5 and tapered hole 10 (e.g., using a feeler gauge). Ensure that the gap C between tool 5 and tapered hole 10 is greater than the maximum deformation Gmax corresponding to the deformation position. Control the machine tool tool post to drive tool 5 out of one end of tapered hole 10 according to the preset taper and exit to the other end of tapered hole 10. Specifically, the preset taper includes a 10% taper. Optionally, to avoid accidental cutting before tool setting, C = Gmax + 0.10mm can be set. The specific value of C can be set according to specific needs and is not particularly limited here.

[0055] If it is determined that the tool 5 has reached the maximum deformation position, the movement of the machine tool post is paused, and the current clearance C1 between the tool 5 and the tapered hole 10 at the maximum deformation position is measured using a corresponding measuring instrument; specifically, the measuring instrument may include a feeler gauge.

[0056] Determine whether twice the current clearance C1 is less than or equal to the minimum division of the machine tool feed; if yes, complete the tool setting operation; if no, increase the feed of tool 5, determine if tool 5 has reached the deformation position, pause the movement of the machine tool tool post, and use the corresponding measuring instrument to measure the current clearance C1 between tool 5 and the deformation position of tapered hole 10 until twice the current clearance is less than or equal to the minimum division of the machine tool feed, and complete the tool setting step.

[0057] Increase the feed rate based on the current feed rate, and the increased feed rate is twice Gmax. Then, process the tapered hole 10 according to the preset taper.

[0058] Specifically, the feed rate is increased multiple times based on the current feed rate, and the taper hole is machined multiple times according to the preset taper, so that the sum of the multiple feed rate increases is equal to twice the maximum deformation amount Gmax at the deformation position.

[0059] See also Figure 4 In some embodiments, detecting the taper of the machined and repaired conical hole and determining whether the taper meets preset conditions includes:

[0060] Unload the repaired part and install the tapered gauge on the tapered hole 10. Measure the distance P between the end face of the tapered gauge and the end face of the tapered hole at multiple points (e.g., four or eight points) along the circumference. When the difference between the maximum and minimum values ​​at each measurement point is less than or equal to a preset value, the taper of the tapered hole is deemed acceptable. Specifically, when the deviation of the measurements at four or eight points does not exceed the preset value, the taper of the repaired tapered hole is considered to meet 10%. The preset value can be 0.02 mm or set to other values ​​as needed. If the taper does not meet the condition, the tapered hole is re-machined.

[0061] In some embodiments, detecting the contact rate of the repaired conical hole 10 and determining whether the contact rate meets a preset condition includes:

[0062] Unload the repaired part, apply paint evenly to a standard 10% tapered gauge 11, insert the tapered gauge 11 into the repaired tapered hole 10, rotate the tapered gauge 11 circumferentially, remove the tapered gauge 11, calculate the contact ratio of the paint on the inner circumferential surface of the tapered hole 10, the contact ratio is the contact rate of the tapered hole 10, and determine whether the contact rate is greater than or equal to a preset value, specifically whether the contact rate is greater than or equal to 60%; if not, repeat the position detection step and the processing repair step. In some embodiments, the paint can be blue oil, or other suitable paints.

[0063] In other embodiments, detecting the contact rate of the repaired tapered hole 10 and determining whether the contact rate meets preset conditions includes:

[0064] After unloading the repaired part, install a standard 10% taper gauge 11 on the taper hole 10. Check the gap between the taper gauge 11 and the taper hole 10 at multiple points along the circumference, and determine whether the gap between the taper gauge 11 and the taper hole 10 is less than or equal to a preset value at multiple points along the circumference. Specifically, the preset value is 0.02 mm, but other values ​​can be used as needed. When the gap between the taper gauge 11 and the taper hole 10 is ≤0.02 mm at all points, the contact rate of the taper hole 10 is determined to be greater than or equal to 60%. If it is not satisfied, repeat the position detection step and the processing repair step. Specifically, a feeler gauge can be used to check the gap. For example, a 0.02 mm feeler gauge can be used. When the outer circumferential surface of the taper gauge 11 cannot be inserted into the inner wall of the taper hole 10 at any point along the circumference, it indicates that the gap between the taper gauge 11 and the taper hole 10 meets the preset condition, and thus, the contact rate meets the preset condition.

[0065] It is understood that the above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can freely combine the above technical features without departing from the concept of the present invention, and can also make several modifications and improvements, all of which fall within the protection scope of the present invention. Therefore, all equivalent transformations and modifications made with respect to the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A method for machining and repairing tapered holes in a component to be repaired, characterized in that, The component to be repaired is a reactor coolant pump, and the method includes the following steps: Position detection step: Detect the deformation position of the conical hole of the component to be repaired, and determine the maximum deformation amount at the deformation position, and the maximum deformation position with the maximum deformation amount; Processing and repair steps: Determine the final feed amount based on the maximum deformation at the maximum deformation position, and process and repair the inner wall of the tapered hole based on the final feed amount; increase the feed amount multiple times based on the current feed amount, and process the tapered hole multiple times according to the preset taper, so that the sum of the multiple feed amounts is equal to twice the maximum deformation amount; The processing and repair steps include: Tool setting procedure: Install the tool on the machine tool tool post, and slowly bring the tool close to the tapered hole, so that the gap between the tool and the tapered hole is greater than the maximum deformation corresponding to the deformation position, and control the machine tool tool post to drive the tool out of the tapered hole from one end of the tapered hole according to the preset taper. If it is determined that the tool has reached the maximum deformation position, the movement of the machine tool tool post is paused, and the current clearance between the tool and the maximum deformation position is measured. Determine whether twice the current clearance is less than or equal to the minimum division of the machine tool feed; if yes, complete the tool setting operation; if no, increase the feed rate of the tool until twice the current clearance is less than or equal to the minimum division of the machine tool feed, and complete the tool setting step. Condition judgment step: Detect the taper and contact rate of the taper hole after processing and repair, and determine whether the taper and contact rate meet the preset conditions. If they do not meet the conditions, re-execute the position detection step and the processing and repair step. The preset condition for the taper is 10%, and the preset condition for the contact rate of the tapered hole is greater than or equal to 60%; when the gap between the tapered gauge and the tapered hole is less than or equal to 0.02mm at multiple points in the circumferential direction, the contact rate of the tapered hole is greater than or equal to 60%.

2. The method for machining and repairing tapered holes in a component to be repaired according to claim 1, characterized in that, Before performing the location detection step, the following steps are included: Leveling steps: First leveling step and second leveling step; First leveling step: clamp the part to be repaired onto the machine tool, set a dial indicator on the axial end face of the part to be repaired, bring the dial indicator close to and abut against the axial end face of the part to be repaired, and rotate the part to be repaired to obtain the measurement data of the end face deviation of the part to be repaired, and level the part to be repaired according to the measurement data of the end face deviation of the part to be repaired. The second leveling step is as follows: A first dial indicator and a second dial indicator are mounted on the tool post of the machine tool, and the tool post is moved into the tapered hole so that the first dial indicator moves to a first position close to the inner edge of the tapered hole and the second dial indicator moves to a second position close to the outer edge of the tapered hole. The part to be repaired is rotated so that the first and second dial indicators measure the value of the circumferential deviation of the part to be repaired, and the part to be repaired is leveled according to the value of the circumferential deviation of the part to be repaired.

3. The method for machining and repairing tapered holes in a component to be repaired according to claim 1, characterized in that, The location detection step includes: Deformation position obtaining step: mounting a dial indicator on a tool post of a machine tool, controlling the machine tool post to drive the dial indicator to exit from one end of the tapered hole to the other end of the tapered hole according to a preset taper, and determining the deformation position of the tapered hole according to the reading of the dial indicator.

4. The method for machining and repairing tapered holes in a component to be repaired according to claim 3, characterized in that, The method further includes: dividing the tapered hole into a plurality of sections in the entire circumferential direction in advance, wherein each section corresponds to one phase of the dial indicator; mounting a dial indicator on the tool post of the machine tool, and recording the current phase of the dial indicator; executing the deformation position obtaining step, and after each execution of the deformation position obtaining step, adjusting the dial indicator to the next phase until all phases are traversed, so as to determine the maximum deformation position and the maximum deformation amount.

5. The method for machining and repairing tapered holes in a component to be repaired according to claim 1, characterized in that, detecting the taper of the processed and repaired tapered hole, and judging whether the taper meets a preset condition includes: unloading the repaired processed to-be-repaired component, mounting a taper gauge on the tapered hole, and measuring the distance between the end face of the taper gauge and the end face of the tapered hole at four or eight equally spaced points along the circumferential direction using a feeler gauge; when the difference between the maximum value and the minimum value among the values of all measuring points is less than or equal to a preset value, determining that the taper of the tapered hole is qualified.

6. The method for machining and repairing tapered holes in a component to be repaired according to claim 1, characterized in that, detecting the contact rate of the processed and repaired tapered hole, and judging whether the contact rate meets a preset condition includes: unloading the repaired processed to-be-repaired component, uniformly applying coating on a taper gauge, placing the taper gauge into the repaired processed tapered hole, rotating the taper gauge along the circumferential direction, taking out the taper gauge, and calculating the contact proportion of the coating in the tapered hole, wherein the contact proportion is the contact rate of the tapered hole, and when the contact rate is greater than or equal to a preset value, determining that the contact rate is qualified; or, unloading the repaired processed to-be-repaired component, mounting a taper gauge on the tapered hole, checking the gap between the taper gauge and the tapered hole using a feeler gauge, and when the gap between the taper gauge and the tapered hole at multiple positions in the circumferential direction is less than or equal to a preset value, determining that the contact rate of the tapered hole is qualified.

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