A high-precision disc part plane processing method

Abstract

The embodiment of the application discloses a high-precision disc part plane processing method, and the high-precision disc part plane processing method comprises the following steps: checking a disc part by using a line circle alignment method, and determining the shape and position error of the disc part in the checking process; grinding the disc part based on the determined shape and position error of the disc part; rechecking the ground disc part by using the line circle alignment method to determine the shape and position error of the processed disc part; comparing the shape and position error of the processed disc part with a shape and position tolerance, and if the shape and position error is within the shape and position tolerance, the processing is qualified, if the shape and position error is out of the shape and position tolerance, the processing is unqualified, and the above steps are repeated until the result is qualified. The method uses the line circle alignment method to replace the three-coordinate alignment method, reduces the number of three-coordinate checking operations, greatly simplifies the operation steps, and improves the production efficiency.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of workpiece processing, in particular to a high-precision disc-shaped part plane processing method. BACKGROUND

[0002] A nuclear main pump thrust disc is a disc-shaped part, which has a large diameter size and high shape and position tolerance requirements, and is required to be checked for shape and position tolerance and straightness in three coordinates after processing. The grinding process of this pump type thrust disc has three fine grinding processes, which are fine grinding after dynamic balancing, fine grinding after whole machine testing, and fine grinding after dynamic balancing. Therefore, the grinding process is more, the three coordinate checking times are more, and in each fine grinding process, first, the three coordinates are checked to determine the processing allowance, but the equipment has system error, so the equipment needs to be re-aligned to determine the processing allowance. Secondly, after completing the grinding of two surfaces, the three coordinates are checked, and if unqualified, the equipment needs to be returned to the grinding machine again for alignment and processing. In a more serious case, after processing one surface, it is not determined whether it is qualified or not, and then the other surface is processed. This back-and-forth turnaround wastes a lot of working hours and seriously affects the processing cycle. SUMMARY

[0003] The present application aims to at least solve one of the problems in the prior art or related art.

[0004] To this end, the present application provides a high-precision disc-shaped part plane processing method, comprising:

[0005] Step 101: checking the disc-shaped part by a line circle alignment method;

[0006] Step 102: fine grinding the disc-shaped part based on the checking data;

[0007] Step 103: rechecking the disc-shaped part by the line circle alignment method;

[0008] Step 104: judging the disc-shaped part processing result based on the rechecking data;

[0009] Step 105: if the rechecking data is unqualified, repeating steps 101 to 104 until the rechecking result is qualified.

[0010] In a feasible implementation, the line circle alignment step comprises:

[0011] determining the number of radial runout checking lines;

[0012] marking the radial runout checking lines on the disc-shaped part;

[0013] measuring the radial runout checking lines by a dial gauge and recording the straightness runout value.

[0014] In an embodiment, the line circle alignment further comprises the steps of:

[0015] determining the number of the circumferential runout inspection lines;

[0016] marking the circumferential runout inspection lines on the disc-like workpiece;

[0017] taking a dial indicator measurement of the circumferential runout inspection lines and recording the circle runout value.

[0018] In an embodiment, the line circle alignment further comprises the steps of:

[0019] determining the number of the circumferential runout inspection lines;

[0020] marking the circumferential runout inspection lines on the disc-like workpiece;

[0021] taking a dial indicator measurement of the circumferential runout inspection lines and recording the circle runout value.

[0022] In an embodiment, the grinding alignment of the disc-like workpiece based on the preliminary inspection data comprises the steps of:

[0023] comparing the inspection data with the standard value;

[0024] determining the machining allowance;

[0025] machining the disc-like workpiece by a machining machine.

[0026] In an embodiment, the judging of the machining result of the disc-like workpiece based on the reinspection data comprises the steps of:

[0027] in the case that the straightness runout value is less than half of the standard value required by the shape and position tolerance, determining that the reinspection data is qualified.

[0028] In an embodiment, the judging of the machining result of the disc-like workpiece based on the reinspection data further comprises the steps of:

[0029] in the case that the circle runout value is less than 0.002 mm, determining that the reinspection data is qualified.

[0030] In an embodiment, the radial runout inspection line is a straight line passing through the center of the disc-like workpiece.

[0031] In an embodiment, the circumferential runout inspection line is a concentric circle with different diameters.

[0032] In an embodiment, the number of the circumferential runout inspection lines is greater than or equal to three.

[0033] In an embodiment, the disc-like workpiece with qualified reinspection result is further inspected by a three-coordinate inspection method.

[0034] Compared with the prior art, the present application at least includes the following beneficial effects:

[0035] The high-precision disc part plane processing method provided by the embodiment of the application comprises the following steps: checking the disc part by a line circle alignment method, and determining the shape and position error of the disc part in the checking process; grinding and aligning the disc part based on the checking data, and grinding the disc part based on the determined shape and position error of the disc part; rechecking the disc part by the line circle alignment method, and determining the shape and position error of the processed disc part by rechecking the ground disc part by the line circle alignment method; judging the disc part processing result based on the rechecking data, and comparing the shape and position error of the processed disc part with the shape and position tolerance; if the shape and position error is within the shape and position tolerance, the processing is qualified; if the shape and position error is outside the shape and position tolerance, the processing is unqualified; and repeating the above steps until the result is qualified. The method uses the line circle alignment method instead of the three-coordinate alignment method, reduces the number of cumbersome three-coordinate checks, greatly simplifies the operation steps under the premise of being able to measure the shape and position data of the disc part, and improves the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0036] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the scope of the present application. Moreover, the same reference numerals in different figures represent the same or similar components. In the drawings:

[0037] Figure 1 A schematic step flow chart of the high-precision disc part plane processing method of an embodiment provided by the present application;

[0038] Figure 2 A schematic diagram of a radial runout checking line provided by the present application;

[0039] Figure 3 A schematic diagram of a circumferential runout checking line provided by the present application; DETAILED DESCRIPTION

[0040] In order to better understand the above technical solutions, the technical solutions of the embodiments of the present application will be described in detail below with the help of the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the embodiments are detailed descriptions of the technical solutions of the embodiments of the present application, and are not limitations of the technical solutions of the present application. In the case of no conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0041] As shown in Figures 1-3 A high-precision disc part plane processing method is provided according to the embodiments of the present application, which comprises:

[0042] Step 101: checking the disc type piece by the method of line circle alignment;

[0043] Step 102: grinding alignment of the disc type piece based on the checking data;

[0044] Step 103: rechecking the disc type piece by the method of line circle alignment;

[0045] Step 104: judging the disc type piece processing result based on the rechecking data;

[0046] Step 105: if the rechecking data is unqualified, repeating steps 101 to 104 until the rechecking result is qualified.

[0047] The high-precision disc type piece plane processing method provided by the embodiment includes: step 101, checking the disc type piece by the method of line circle alignment, in which the shape and position error of the measured disc type piece can be determined; step 102, grinding alignment of the disc type piece based on the checking data, grinding the disc type piece based on the shape and position error of the measured disc type piece determined in step 101; step 103, rechecking the disc type piece by the method of line circle alignment, rechecking the disc type piece after grinding by the method of line circle alignment to determine the shape and position error of the disc type piece after processing; step 104, judging the disc type piece processing result based on the rechecking data, comparing the shape and position error of the disc type piece after processing with the shape and position tolerance, if the shape and position error is within the shape and position tolerance, the processing is qualified, if the shape and position error is outside the shape and position tolerance, the processing is unqualified, repeating steps 101 to 104 until the result is qualified, the method uses the method of line circle alignment instead of the three-coordinate alignment method, reducing the number of three-coordinate checking operations, greatly simplifying the operation steps, improving the production efficiency, and through practice, the workpiece processed by this measurement method is measured by the three-coordinate checking method, and the qualified rate is 100%.

[0048] As shown in Figure 2 , the line circle alignment includes steps of:

[0049] determining the number of radial runout checking lines;

[0050] marking radial runout checking lines on the disc type piece;

[0051] measuring the radial runout checking lines by a dial gauge and recording the straightness runout value.

[0052] In the technical scheme, the steps of the line circle alignment include: determining the number of radial runout inspection lines, generally, the more the number of the determined inspection lines, the more accurate the measurement; marking the radial runout inspection lines on the disc part, facilitating the determination of the position of the radial runout inspection lines in the subsequent steps; and tabulating and recording the straightness runout value of the workpiece by measuring the radial runout inspection lines, and recording the value, facilitating the processing according to the straightness runout value of the workpiece in the subsequent steps.

[0053] As shown in Figure 3 , the line circle alignment further includes the steps of:

[0054] determining the number of circumferential runout inspection lines;

[0055] marking the circumferential runout inspection lines on the disc part;

[0056] tabulating and recording the circular runout value by measuring the circumferential runout inspection lines.

[0057] In the technical scheme, the steps of the line circle alignment further include: determining the number of circumferential runout inspection lines, generally, the more the number of the runout inspection lines, the more accurate the measurement, marking the circumferential runout inspection lines on the disc part, facilitating the confirmation of the position of the circumferential runout inspection lines in the subsequent operation, tabulating and recording the circular runout value by measuring the circumferential runout inspection lines, and the disc part can be processed according to the recorded circular runout value in the subsequent processing of the disc part.

[0058] As shown in Figure 1 , the steps of the grinding alignment of the disc part based on the preliminary inspection data include:

[0059] comparing the inspection data with the standard value;

[0060] determining the processing allowance;

[0061] processing the disc part by the processing machine.

[0062] In the technical scheme, the grinding alignment of the disc part based on the preliminary inspection data includes comparing the inspection data with the standard value, determining the processing allowance according to the difference between the inspection data and the standard value, and adjusting the position of the cutter of the processing machine according to the processing allowance, which can effectively avoid the damage or collapse of the cutter caused by the misalignment of the cutter position, and effectively improve the safety of the technical scheme.

[0063] The steps of judging the processing result of the disc part based on the reinspection data include:

[0064] in the case that the straightness runout value is less than one half of the standard value required by the form and position tolerance, determining that the reinspection data is qualified.

[0065] In the technical solution, when the straight line run-out value is less than half of the standard value required by the shape and position tolerance, the re-inspection data is determined to be qualified. The line circle table method has certain error compared with the three-coordinate inspection method, and the shape and position tolerance of the standard value is usually designed based on the error amount of the three-coordinate inspection method. According to the experience in actual processing, the error of the line circle table method is less than half of the error of the three-coordinate inspection method, so the error measured by the line circle table method is less than half of the standard value error, and the disc part processed according to the inspection standard is determined to be qualified. When the disc part is subjected to three-coordinate inspection, the qualified rate is 100%.

[0066] The step of determining the processing result of the disc part based on the re-inspection data further comprises:

[0067] When the circle run-out value is less than 0.002mm, the re-inspection data is determined to be qualified.

[0068] In the technical solution, the step of determining the processing result of the disc part based on the re-inspection data further comprises determining the re-inspection data to be qualified when the circle run-out value is less than 0.002mm. According to the experience in actual processing, when the circle run-out value is less than 0.002mm, the disc part is subjected to three-coordinate inspection for re-inspection, and the qualified rate is 100%.

[0069] As shown in Figure 2 , the radial run-out inspection line is a straight line passing through the center of the disc part.

[0070] In the technical solution, the radial run-out inspection line is a straight line passing through the center of the disc part, and when the radial position is determined, the radial run-out inspection line is as equally divided as possible, which can increase the accuracy of the line circle inspection of the disc part.

[0071] As shown in Figure 3 , the circumferential run-out inspection line is a concentric circle with different diameters.

[0072] In the technical solution, the circumferential run-out inspection line is a concentric circle with different diameters, and in actual operation, the center of the circumferential run-out inspection line is as coincident as possible with the center of the disc part, which can increase the accuracy of the circle run-out value part of the line circle inspection.

[0073] As shown in Figure 3 , the number of circumferential run-out inspection lines is greater than or equal to three.

[0074] In the technical solution, the number of circumferential run-out inspection lines is greater than or equal to three, and in actual operation, three circumferential run-out inspection lines are generally selected to more accurately measure the circle run-out value of the disc part to be measured, and the diameters of all the circumferential run-out inspection lines are an arithmetic sequence, which improves the accuracy of the method.

[0075] The high-precision disc part plane processing method further comprises:

[0076] The disc part that passes the re-inspection is re-inspected by the three-coordinate inspection method.

[0077] In the technical scheme, the disc part that passes the re-inspection data is finally converted to the three-coordinate inspection method for inspection under the premise of reducing the inspection times of the three-coordinate inspection method as much as possible, and the last compliance is performed, so as to ensure that the disc part after processing meets the standard value requirement of the shape and position tolerance. According to the experience in the actual production process, when the disc part that passes the linear circle table method processing is converted to the three-coordinate inspection method for compliance, the qualified rate is 100%.

[0078] In the present application, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more than two, unless otherwise explicitly limited. The terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, "connection" can be fixed connection, or detachable connection, or integrally connected; "connection" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0079] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or units referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0080] In the description of the present application, the terms "one embodiment", "some embodiments", "a specific embodiment" and the like mean 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 application. In the present application, the illustrative description 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.

[0081] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for processing a high-precision plane of a disc-like member, characterized by, The method comprises the following steps: Step 101: checking the disc-shaped part by the line circle alignment method; Step 102: grinding the disc-shaped part based on the checking data; Step 103: re-checking the disc-shaped part by the line circle alignment method; Step 104: judging the processing result of the disc-shaped part based on the re-checking data; Step 105: if the re-checking data is unqualified, repeating steps 101-104 until the re-checking result is qualified. The line circle alignment method comprises the following steps: determining the number of radial runout checking lines; marking the radial runout checking lines on the disc-shaped part; measuring the radial runout checking lines by a dial gauge and recording the straightness runout value; determining the number of circumferential runout checking lines; marking the circumferential runout checking lines on the disc-shaped part; measuring the circumferential runout checking lines by a dial gauge and recording the circular runout value. The grinding alignment of the disc-shaped part based on the checking data comprises the following steps: comparing the checking data with the standard value; determining the processing allowance; processing the disc-shaped part by a processing machine. The judging of the processing result of the disc-shaped part based on the re-checking data comprises the following steps: if the straightness runout value is less than half of the standard value required by the shape and position tolerance, the re-checking data is qualified; if the circular runout value is less than 0.002 mm, the re-checking data is qualified.

2. The method according to claim 1, wherein the radial runout checking line is a straight line passing through the center of the disc-shaped part.

3. The method according to claim 1, wherein the circumferential runout checking line is a concentric circle with different diameters.

4. The method according to claim 1, wherein the number of the circumferential runout checking lines is greater than or equal to three. The method further comprises the following step: re-checking the disc-shaped part with the qualified re-checking result by a three-coordinate checking method. ​ 5. The high-precision planar processing method of a disc-like member according to any one of claims 1 to 4, characterized by, ​ ​

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