Determination and usage method of an internal thread measuring tool and related equipment

Abstract

A method for determining and using an internal thread measuring tool and related equipment, obtaining a first manufacturing tolerance zone of a go gauge, the first manufacturing tolerance zone being the national standard manufacturing tolerance zone of the go gauge, the first manufacturing tolerance zone including a first upper deviation and a first lower deviation; obtaining a first margin of the measuring tool; determining a second upper deviation and a second lower deviation of a second manufacturing tolerance zone of the go gauge by adding the first upper deviation and the first lower deviation of the first manufacturing tolerance zone to the first margin respectively. Obtaining a fourth lower deviation of a fourth manufacturing tolerance zone of a no-go gauge, the fourth manufacturing tolerance zone being the national standard manufacturing tolerance zone of the no-go gauge; obtaining a second margin of the measuring tool; determining a wear limit value of the no-go gauge by subtracting the second margin from the fourth lower deviation. Thus, the thickness of wear that the go gauge and the no-go gauge can withstand can be increased, while the service life of the detection tool is improved and the production and detection costs of part processing are ensured to be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and particularly to a method for determining and using an internal thread measuring tool and related equipment. Background Art

[0002] With the development of the equipment manufacturing industry, the requirements for the machining accuracy of parts are getting higher and higher. Since different components in various equipment usually need to be connected and fixed by means of threaded connections. Therefore, in order to meet the machining accuracy requirements of parts, it is necessary to detect internal threads to ensure the connection accuracy of threaded connections. When there are many parts to be detected, it is necessary to repeatedly detect internal threads of the same specification. At this time, people usually use a measuring tool matching the internal thread, such as a thread plug gauge, to perform the detection to improve the detection efficiency. Specifically, reference can be made to the thread plug gauges disclosed in Chinese Patent Publication No. CN21165143U or CN214149082U, which will not be elaborated here.

[0003] In addition, the tolerance zone of the American thread gauge is located within the tolerance zone range of the threaded workpiece, and it is not allowed for the gauge tolerance zone to exceed the tolerance zone range of the threaded workpiece. This is different from the design principle of the metric thread gauges commonly used in our country and deserves our special attention.

[0004] According to the "Metric, American and British Thread Standards Handbook" (compiled by the National Technical Committee for Thread Standardization), hereinafter referred to as the "Thread Standard Handbook", the American thread plug gauge does not set the wear limit of the pitch diameter. Therefore, the lower deviation of the pitch diameter manufacturing tolerance zone of the internal thread is used as the wear limit of the pitch diameter of the thread plug gauge. Since the pitch diameter manufacturing tolerance is usually only eight thousandths, the thread plug gauge wears very quickly during use because its tolerance is too small and it is extremely easy to cause the scrapping of the thread plug gauge due to wear exceeding the tolerance zone range. Since the thread plug gauge belongs to a very precise measuring tool and its price is very expensive, excessive scrapping of the thread plug gauge will increase the production and detection costs of part machining. Summary of the Invention

[0005] The present application provides a method for determining and using an internal thread measuring tool and related equipment, so as to be able to increase the service life of the detection tool, thereby reducing the production and detection costs of part machining.

[0006] The first aspect of the present application provides a method for determining an internal thread measuring tool. The measuring tool includes a go gauge, and is characterized by including: obtaining a first manufacturing tolerance zone of the go gauge, the first manufacturing tolerance zone including a first upper deviation and a first lower deviation; obtaining a first margin of the measuring tool; determining a second upper deviation and a second lower deviation of a second manufacturing tolerance zone of the go gauge by adding the first upper deviation and the first lower deviation of the first manufacturing tolerance zone to the first margin respectively.

[0007] When the internal thread fails to pass the inspection by the inspection tool, the tool for machining the internal thread needs to be replaced to ensure the machining accuracy of the internal thread. By increasing the first upper deviation and the first lower deviation of the first manufacturing tolerance zone by a first margin, the second upper deviation and the second lower deviation of the second manufacturing tolerance zone are obtained. Thus, the size of the go gauge obtained by manufacturing according to the second manufacturing tolerance zone is larger than that of the go gauge obtained by manufacturing according to the first manufacturing tolerance zone, so that the thickness that the go gauge obtained by manufacturing according to the second manufacturing tolerance zone can wear becomes larger. Although this will cause the tool to be scrapped and replaced in advance, since the price of the inspection tool is much higher than that of the tool, overall, it can increase the service time of the inspection tool and reduce the production and inspection costs of part machining.

[0008] As a possible implementation manner of the first aspect, the first manufacturing tolerance zone is the national standard manufacturing tolerance zone of the go gauge.

[0009] As a possible implementation manner of the first aspect, obtaining the first margin of the measuring tool includes: obtaining the price of the go gauge; obtaining the price of the tool for machining the internal thread; and determining the first margin according to the price of the go gauge and the price of the tool.

[0010] Thus, the size of the go gauge obtained by manufacturing according to the second manufacturing tolerance zone is larger than that of the go gauge obtained by manufacturing according to the first manufacturing tolerance zone. Therefore, when using the go gauge obtained by manufacturing according to the second manufacturing tolerance zone to inspect the internal thread, the dimensional requirements for the internal thread are more stringent. Since during the process of machining and inspecting the internal thread, if the machined internal thread fails to pass the inspection by the go gauge, the tool used for machining the internal thread needs to be replaced. Therefore, using the go gauge obtained by manufacturing according to the second manufacturing tolerance zone to inspect the internal thread will cause the tool to be scrapped in advance, thus increasing the tool wear. By determining the first margin according to the first price and the second price, it is possible to avoid the cost increased due to tool wear exceeding the cost reduction of the go gauge wear obtained by using the go gauge obtained by manufacturing according to the second manufacturing tolerance zone. Thus, while increasing the service time of the inspection tool, it is possible to ensure the reduction of the production and inspection costs of part machining.

[0011] As a possible implementation manner of the first aspect, it further includes: obtaining the third upper deviation and the third lower deviation of the third manufacturing tolerance zone of the pitch diameter of the internal thread; and setting the first margin to 8% - 12% of the difference between the third upper deviation and the third lower deviation.

[0012] Thus, a specific setting range of the first margin is provided, so as to increase the service time of the inspection tool while ensuring the reduction of the production and inspection costs of part machining.

[0013] The second aspect of the present application provides a method for using an internal thread measuring tool. The measuring tool includes a no-go gauge. Obtain the fourth lower deviation of the fourth manufacturing tolerance zone of the no-go gauge; obtain the second margin of the measuring tool; determine the wear limit value of the no-go gauge by subtracting the second margin from the fourth lower deviation.

[0014] When the internal thread fails to pass the inspection of the inspection tool, it is necessary to replace the tool for machining the internal thread to ensure the machining accuracy of the internal thread. By subtracting the second margin from the fourth lower deviation to determine the wear limit value of the no-go gauge, when using the no-go gauge to inspect the internal thread, when the no-go gauge reaches the wear limit value due to wear, the no-go gauge can be scrapped. Since the wear limit value is less than the fourth lower deviation, compared with scrapping the no-go gauge when it wears to the fourth lower deviation, the service life of the no-go gauge can be extended, thereby increasing the service life of the inspection tool, and thus reducing the production and inspection costs of part machining. Although this will cause the tool to be scrapped and replaced in advance, since the price of the inspection tool is much higher than the price of the tool, overall, it can increase the service life of the inspection tool and reduce the production and inspection costs of part machining.

[0015] As a possible implementation manner of the second aspect, the fourth manufacturing tolerance zone is the national standard manufacturing tolerance zone of the no-go gauge.

[0016] As a possible implementation manner of the second aspect, the second margin of the measuring tool is obtained in the following way: obtain the price of the no-go gauge; obtain the price of the tool for machining the internal thread; determine the second margin according to the price of the no-go gauge and the price of the tool.

[0017] Thus, by determining the first margin according to the first price and the second price, it is possible to avoid the cost increase due to tool wear exceeding the cost reduction of the no-go gauge loss by scrapping the no-go gauge according to the wear limit value. Therefore, while increasing the service life of the inspection tool, the production and inspection costs of part machining can be ensured to be reduced.

[0018] As a possible implementation manner of the second aspect, the second margin is in the range of 0.005 to 0.008 mm.

[0019] Thus, a specific setting range of the second margin is provided, so as to increase the service life of the inspection tool while ensuring the reduction of the production and inspection costs of part machining.

[0020] The third aspect of the present application provides a method for machining an internal thread, including: machining the internal thread using a tool; using the determination method described in any one of the first aspects of the present application to determine a measuring tool, the measuring tool including a go gauge; using the determined measuring tool to inspect the internal thread; when the go gauge cannot be screwed into the internal thread, replace the tool.

[0021] As described above, when the internal thread fails to pass the inspection by the inspection tool, the tool for machining the internal thread needs to be replaced to ensure the machining accuracy of the internal thread. By increasing the first upper deviation and the first lower deviation of the first manufacturing tolerance zone by a first margin, the second upper deviation and the second lower deviation of the second manufacturing tolerance zone are obtained. Thus, the size of the go gauge obtained by manufacturing according to the second manufacturing tolerance zone is larger than that of the go gauge obtained by manufacturing according to the first manufacturing tolerance zone, so that the thickness that the go gauge obtained by manufacturing according to the second manufacturing tolerance zone can wear becomes larger. Although this will cause the tool to be scrapped and replaced in advance, since the price of the inspection tool is much higher than that of the tool, overall, the service life of the inspection tool can be increased and the production and inspection costs of part machining can be reduced.

[0022] As a possible implementation manner of the third aspect, the measuring tool further includes a not-go gauge, and the internal thread machining method further includes: inspecting the internal thread by using the method for using the internal thread measuring tool according to any one of claims 4-6; when the not-go gauge is screwed into the internal thread, replacing the tool.

[0023] As described above, by subtracting a second margin from the fourth lower deviation to determine the wear limit value of the not-go gauge, so that when the not-go gauge is used to inspect the internal thread, when the not-go gauge reaches the wear limit value due to wear, the not-go gauge can be scrapped. Since the wear limit value is less than the fourth lower deviation, compared with scrapping the not-go gauge when it wears to the fourth lower deviation, the service life of the not-go gauge can be extended, thereby increasing the service life of the inspection tool, and thus reducing the production and inspection costs of part machining. Although this will cause the tool to be scrapped and replaced in advance, since the price of the inspection tool is much higher than that of the tool, overall, the service life of the inspection tool can be increased and the production and inspection costs of part machining can be reduced.

[0024] The fourth aspect of the present application provides an internal thread measuring tool, including a go gauge and a not-go gauge, and the go gauge is manufactured according to the determination method according to any one of the first aspects of the present application.

[0025] The fifth aspect of the present application provides a computing device, which includes a processor and a memory, and the memory stores program instructions, and when the program instructions are executed by the processor, the processor is caused to execute the method according to any one of the first aspects of the present application.

[0026] The sixth aspect of the present application provides a storage medium, on which program instructions are stored, and when the program instructions are executed by a computer, the computer is caused to execute the method according to any one of the first aspects of the present application.

[0027] A seventh aspect of the present application provides a computer program product, which includes program instructions that, when executed by a computer, cause the computer to execute the method according to any one of the first aspect of the present application.

[0028] These and other aspects of the present invention will become more readily apparent from the following description of the (multiple) embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The following further describes the various features of the present invention and the relationships between the various features with reference to the accompanying drawings. The accompanying drawings are all exemplary. Some features are not shown to scale, and in some of the drawings, features that are customary in the field related to the present application and are not essential to the present application may be omitted, or features that are not essential to the present application may be additionally shown. The combination of the various features shown in the drawings is not intended to limit the present application. Additionally, throughout this specification, the content referred to by the same reference numerals is also the same. The specific description of the drawings is as follows:

[0030] Figure 1 It is a schematic structural diagram of a measuring tool in an embodiment of the present application;

[0031] Figure 2 It is a schematic structural diagram of another measuring tool in an embodiment of the present application;

[0032] Figure 3 It is a schematic diagram of a tolerance zone diagram in an embodiment of the present application;

[0033] Figure 4 It is one of the schematic flowcharts of the method for determining an internal thread measuring tool in an embodiment of the present application;

[0034] Figure 5 It is another schematic flowchart of the method for determining an internal thread measuring tool in an embodiment of the present application;

[0035] Figure 6 It is a third schematic flowchart of the method 100 for determining the internal thread measuring tool 10 in an embodiment of the present application;

[0036] Figure 7 It is one of the schematic flowcharts of the method for using an internal thread measuring tool in an embodiment of the present application;

[0037] Figure 8 It is another schematic flowchart of the method for using an internal thread measuring tool in an embodiment of the present application;

[0038] Figure 9 It is a schematic flowchart of the internal thread processing method in an embodiment of the present application;

[0039] Figure 10 It is a schematic flowchart of the design method of an internal thread measuring tool in an embodiment of the present application;

[0040] Figure 11 This is a schematic flowchart of the manufacturing method of the internal thread measuring tool in the embodiments of the present application;

[0041] Figure 12 This is a structural schematic diagram of a computing device provided by the embodiments of the present application. Detailed implementation manners

[0042] The terms "first, second, third, etc." or terms similar to "module A, module B, module C, etc." in the specification and claims are only used to distinguish similar objects and do not represent a specific order for the objects. It can be understood that, where permitted, the specific order or sequence can be interchanged so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0043] In the following descriptions, the reference numerals representing steps, such as S110, S120, etc., do not necessarily mean that the steps will be executed in this order. Where permitted, the order of the front and rear steps can be interchanged, or they can be executed simultaneously.

[0044] The term "comprising" used in the specification and claims should not be construed as being limited to the content listed thereafter; it does not exclude other elements or steps. Therefore, it should be interpreted as specifying the presence of the described features, wholes, steps or components, but does not exclude the presence or addition of one or more other features, wholes, steps or components and their groups. Therefore, the expression "a device comprising device A and B" should not be limited to a device consisting only of components A and B.

[0045] The "one embodiment" or "embodiment" mentioned in this specification means that the specific features, structures or characteristics described in connection with the embodiment are included in at least one embodiment of the present invention. Therefore, the phrases "in one embodiment" or "in an embodiment" that appear throughout this specification do not necessarily all refer to the same embodiment, but may refer to the same embodiment. In addition, in one or more embodiments, the various specific features, structures or characteristics can be combined in any appropriate manner, as will be apparent to those of ordinary skill in the art from this disclosure.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. In case of inconsistency, the meaning stated in this specification or the meaning derived from the content recorded in this specification shall prevail. Additionally, the terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0047] In order to accurately describe the technical content in this application and to accurately understand the present invention, the following explanations or definitions are given for the terms used in this specification before describing the specific embodiments.

[0048] Pitch diameter: It is the diameter of a hypothetical cylinder where the widths of the grooves and protrusions on the tooth profile in the axial section of the thread are equal.

[0049] Tolerance zone: In the tolerance zone diagram, it is a region defined by two straight lines representing the upper limit deviation and the lower limit deviation or the upper limit size and the lower limit size.

[0050] Tolerance zone diagram: A graph used to represent the deviation range of a certain dimension (basic dimension).

[0051] Basic dimension: It refers to the dimension given in the design.

[0052] Upper deviation: Also known as the upper limit deviation, it is the algebraic difference obtained by subtracting the basic dimension from the upper limit size.

[0053] Lower deviation: Also known as the lower limit deviation, it is the algebraic difference obtained by subtracting the basic dimension from the lower limit size.

[0054] Limit size: It refers to two boundary values allowing the part size to vary. The larger one is called the maximum limit size (upper limit size), and the smaller one is called the minimum limit size (lower limit size).

[0055] First, in combination with the accompanying drawings, the specific structure of the measuring tool in the embodiments of this application is described in detail.

[0056] Figure 1 It is a schematic structural diagram of a measuring tool 10 in the embodiments of this application; Figure 2 It is a schematic structural diagram of another measuring tool 10 in the embodiments of this application. As Figure 1 、 Figure 2 shown, taking the thread plug gauge as an example, the measuring tool 10 in the embodiments of this application includes: an operating rod 11 and a go gauge 12 and a no-go gauge 13 provided on the operating rod 11. Specifically, the measuring tool 10 can be as Figure 1 shown, with the go gauge 12 and the no-go gauge 13 respectively arranged at both ends of the operating rod 11, or as Figure 2 shown, with the go gauge 12 and the no-go gauge 13 respectively arranged at the end positions of two operating rods 11, and there is no limitation on this.

[0057] Furthermore, the measuring tool 10 in the embodiments of this application can be, for example, Figure 1 、 Figure 2 the thread plug gauge shown in, and can also be other forms of tools for measuring the pitch diameter of internal threads, and there is no limitation on this.

[0058] Figure 3 This is a schematic diagram of the tolerance zone graph in the embodiments of the present application. Taking the internal thread with a thread specification of 0.375 - 16UM - 3B as an example, the relationship between the third manufacturing tolerance zone Td2 of the internal thread, the first manufacturing tolerance zone T of the go - gauge 12, and the fourth manufacturing tolerance zone Z of the not - go - gauge 13 is shown. As Figure 3 shown, the pitch diameter of the internal thread The third manufacturing tolerance zone Td2 is the tolerance zone followed when manufacturing the internal thread. Its basic dimension is 8.494 mm. The third upper deviation of the third manufacturing tolerance zone Td2 is +0.109, and the third lower deviation is 0. The first manufacturing tolerance zone T is the tolerance zone when manufacturing the go - gauge 12 according to the national standard. The first upper deviation of the first manufacturing tolerance zone T is +0.0076, and the first lower deviation is 0. The fourth manufacturing tolerance zone Z is the tolerance zone when manufacturing the not - go - gauge 13 according to the national standard. The fourth upper deviation of the fourth manufacturing tolerance zone Z is +0.109, and the fourth lower deviation is 0.1014.

[0059] As Figure 3 shown, the first lower deviation in the first manufacturing tolerance zone T is the same as the third lower deviation of the third manufacturing tolerance zone Td2, and this dimension is used as the first wear limit value dTS of the go - gauge 12. Thus, when using the go - gauge 12 manufactured in accordance with the first manufacturing tolerance zone T to detect the internal thread, if the deviation of the pitch diameter dimension of the internal thread is less than the first lower deviation, the go - gauge 12 cannot be screwed into the internal thread, which means that the pitch diameter dimension deviation of the internal thread is less than the third lower deviation, indicating that the internal thread does not meet the requirements of the third manufacturing tolerance zone Td2 and the cutting tool used for machining the internal thread needs to be replaced. If the deviation of the pitch diameter dimension of the internal thread is greater than the first lower deviation, the go - gauge 12 can be screwed into the internal thread, which means that the pitch diameter dimension deviation of the internal thread is greater than the third lower deviation, indicating that the internal thread meets the requirements of the third manufacturing tolerance zone Td2. When the pitch diameter dimension of the go - gauge 12 becomes less than the first wear limit value dTS due to wear, after the go - gauge 12 detects the internal thread, it cannot be determined whether the pitch diameter dimension of the internal thread is greater than the third lower deviation. Therefore, at this time, the go - gauge 12 needs to be scrapped.

[0060] As Figure 3As shown, the fourth upper deviation in the fourth manufacturing tolerance zone Z is the same as the third upper deviation of the third manufacturing tolerance zone Td2, and the fourth lower deviation is taken as the second wear limit value dZS of the go-no-go gauge 13. Thus, when using the go-no-go gauge 13 manufactured in accordance with the fourth manufacturing tolerance zone Z to inspect the internal thread, if the deviation of the pitch diameter dimension of the internal thread is greater than the fourth upper deviation, the go-no-go gauge 13 can be screwed into the internal thread, which means that the deviation of the pitch diameter dimension of the internal thread is greater than the fourth upper deviation, indicating that the thread does not meet the requirements of the third manufacturing tolerance zone Td2 and the tool used for machining the internal thread needs to be replaced. If the deviation of the pitch diameter dimension of the internal thread is less than the fourth upper deviation, the go-no-go gauge 13 cannot be screwed into the internal thread, which means that the deviation of the pitch diameter dimension of the internal thread is less than the fourth upper deviation, indicating that the thread meets the requirements of the third manufacturing tolerance zone Td2. When the pitch diameter dimension of the go-no-go gauge 13 becomes smaller than the second wear limit value dZS due to wear, the pitch diameter dimension of the go-no-go gauge 13 exceeds the fourth manufacturing tolerance zone Z of the go-no-go gauge 13. Therefore, the existing practice is to scrap the go-no-go gauge 13 at this time.

[0061] As Figure 3 shown, Figure 3 The second manufacturing tolerance zone T' of the go gauge 12 is also shown in the figure. The first margin A is the difference between the first manufacturing tolerance zone T and the second manufacturing tolerance zone T'. Specifically, the second upper deviation of the second manufacturing tolerance zone T' can be determined by adding the first margin A to the first upper deviation of the first manufacturing tolerance zone T, and the second lower deviation of the second manufacturing tolerance zone T' can be determined by adding the first margin A to the first lower deviation of the first manufacturing tolerance zone T. That is, the second upper deviation of the second manufacturing tolerance zone T' is A + 0.0076, and the second lower deviation is A. Thus, the go gauge 12 can be manufactured in accordance with the second manufacturing tolerance zone T'. The go gauge 12 manufactured in accordance with the second manufacturing tolerance zone T' is larger in size than the go gauge 12 obtained by manufacturing in accordance with the first manufacturing tolerance zone T, so that the thickness that the go gauge 12 manufactured in accordance with the second manufacturing tolerance zone T' can wear becomes larger. Although this will cause the tool to be scrapped and replaced in advance, since the price of the inspection tool is much higher than the price of the tool, overall, it can increase the service life of the inspection tool and reduce the production and inspection costs of part machining.

[0062] As Figure 3 shown, Figure 3The second wear limit value dZS and the third wear limit value dZS` of the no-go gauge 13 are also shown, where the second wear limit value dZS can be set as the fourth lower deviation of the fourth manufacturing tolerance zone Z, which is 0.1014. The third wear limit value dZS` is less than the second wear limit value dZS and differs from the second wear limit value dZS by a second margin B, which is 0.1014 - B. Thus, the third wear limit value dZS` rather than the second wear limit value dZS is used as the limit value for the no-go gauge 13 to withstand wear, so that the wear thickness that the no-go gauge 13 can withstand becomes larger. Although this will cause the tool to be scrapped and replaced in advance, since the price of the inspection tool is much higher than the price of the tool, overall, it can increase the service life of the inspection tool and reduce the production and inspection costs of part processing.

[0063] Next, with reference to the accompanying drawings, the specific steps of the method 100 for determining the internal thread measuring tool 10 in the embodiments of the present application will be described in detail.

[0064] Figure 4 It is one of the flow diagrams of the method 100 for determining the internal thread measuring tool 10 in the embodiments of the present application. As Figure 4 shown, the specific steps of the method 100 for determining the internal thread measuring tool 10 in the embodiments of the present application include:

[0065] Step S110: Obtain the first manufacturing tolerance zone T.

[0066] In step S110, the first manufacturing tolerance zone T of the go gauge 12 is obtained. The first manufacturing tolerance zone T is the national standard manufacturing tolerance zone of the go gauge 12. The first manufacturing tolerance zone T includes a first upper deviation and a first lower deviation, and may also include a basic dimension. The go gauge 12 made using the first manufacturing tolerance zone T is used to inspect the internal thread. The go gauge 12 is likely to be worn so that the size of the go gauge 12 is smaller than the lower limit size, resulting in the scrapping of the go gauge 12 because it cannot accurately inspect the internal thread.

[0067] Step S120: Obtain the first margin A of the measuring tool 10.

[0068] Step S130: Determine the second manufacturing tolerance zone T`.

[0069] In step S130, by adding the first upper deviation and the first lower deviation of the first manufacturing tolerance zone T to the first margin A respectively, the second upper deviation and the second lower deviation of the second manufacturing tolerance zone T` of the go gauge 12 are determined.

[0070] When the internal thread fails to pass the inspection by the inspection tool, the tool for machining the internal thread needs to be replaced to ensure the machining accuracy of the internal thread. By increasing the first upper deviation and the first lower deviation of the first manufacturing tolerance zone T by a first margin A, the second upper deviation and the second lower deviation of the second manufacturing tolerance zone T' are obtained. Thus, the size of the go gauge 12 obtained by manufacturing according to the second manufacturing tolerance zone T' is larger than that of the go gauge 12 obtained by manufacturing according to the first manufacturing tolerance zone T, so that the thickness that the go gauge 12 obtained by manufacturing according to the second manufacturing tolerance zone T' can wear becomes larger. Although this will cause the tool to be scrapped and replaced in advance, since the price of the inspection tool is much higher than that of the tool, overall, it can increase the service time of the inspection tool and reduce the production and inspection costs of part machining.

[0071] Figure 5 It is the second schematic flow chart of the determination method 100 of the internal thread measuring tool 10 in the embodiment of the present application; Figure 6 It is the third schematic flow chart of the determination method 100 of the internal thread measuring tool 10 in the embodiment of the present application, showing a step of obtaining the first margin A. As Figure 5 shown, the specific steps of the determination method 100 of the internal thread measuring tool 10 in the embodiment of the present application further include:

[0072] Step S121, obtain the first price.

[0073] In step S121, the first price is the price of the go gauge 11. When the go gauge 12 and the no-go gauge 13 of the measuring tool 10 are arranged on the same operating rod 11 as Figure 1 shown, the scrapping of the go gauge 12 may mean that the entire measuring tool 10 is discarded and scrapped, so the first price can be equal to the price of the measuring tool 10. However, even if the go gauge 12 is scrapped, since the no-go gauge 13 can still be used, the operator can also choose to continue using the no-go gauge 13. At this time, the price of the go gauge 12 can be calculated based on the price of the measuring tool 10, for example, taking half of the price of the measuring tool 10. When the go gauge 12 and the no-go gauge 13 of the measuring tool 10 are arranged on two operating rods 11 as Figure 2 shown respectively, the scrapping of the go gauge 12 will not affect the no-go gauge 13, so the first price can be the price of a single go gauge 12.

[0074] In addition, the measuring tool 10 can be obtained by self-manufacture or by purchasing finished products. In view of this, the first price can be the cost price of labor, materials, etc. for manufacturing the measuring tool 10, or the purchase price when purchasing the measuring tool 10, and this is not limited.

[0075] When step S121 is executed by a device such as a computer, the first price can be manually input into the computer. In particular, options can be provided on the computer for the operator to select whether the measuring tool 10 is an integrated type or a split type of the go gauge 12 and the no-go gauge 13, and when it is of the integrated type, whether only the go gauge 12 side is scrapped or the entire measuring tool 10 is scrapped. According to different input contents, different final results of the first price are determined. The same is true for the second price and the like described later.

[0076] Step S122, obtain the second price.

[0077] In step S122, the second price is the price of the tool used for machining the internal thread.

[0078] Step S123, determine the first margin A.

[0079] In step S123, the first margin A is determined according to the first price and the second price.

[0080] Thus, by determining the first margin A according to the first price and the second price, it is possible to avoid the cost increased due to tool wear exceeding the cost reduction of the go gauge 12 loss obtained by using the go gauge 12 manufactured according to the second manufacturing tolerance zone T`. Thereby, while improving the service life of the inspection tool, it is possible to ensure the reduction of the production and inspection costs of part machining.

[0081] As Figure 6 shown, before step S123, steps S124 and S125 are further included.

[0082] Step S124, obtain the third upper deviation and the third lower deviation of the third manufacturing tolerance zone Td2 of the pitch diameter of the internal thread;

[0083] Step S125, determine the range value of the first margin A according to the first price and the second price.

[0084] In steps S125 and S123, the range value of the first margin A can be determined by the difference between the third upper deviation and the third lower deviation. Among them, considering the increase in the machining difficulty of the internal thread caused by increasing the first margin A, generally the range value of the first margin A does not exceed 50%. The determination method of the range value of the first margin A can specifically be determined according to the multiple difference between the first price and the second price. The larger the value obtained by dividing the first price by the second price, the closer the range value of the first margin A is to 50%.

[0085] Above, taking the example that the first price of the detection tool is about 5 times the second price of the tool, the go gauge 12 sets the first margin A to 8% - 12% of the difference between the third upper deviation and the third lower deviation, so as to ensure the reduction of production and detection costs of part processing while increasing the service life of the detection tool, and avoid excessive replacement of tools, exceeding the detection cost saved by the detection tool.

[0086] Figure 7 This is one of the flow diagrams of the usage method 200 of the internal thread measuring tool 10 in the embodiment of the present application, showing the method of using the detection tool to detect the internal thread. As Figure 6 shown, the specific steps of the usage method 200 of the internal thread measuring tool 10 in the embodiment of the present application include:

[0087] Step S210, obtain the fourth lower deviation.

[0088] In step S210, obtain the fourth lower deviation of the fourth manufacturing tolerance zone Z of the not-go gauge 13, and the fourth manufacturing tolerance zone Z is the national standard manufacturing tolerance zone of the not-go gauge 13.

[0089] Step S220, obtain the second margin B.

[0090] In step S220, obtain the second margin B of the measuring tool 10

[0091] Step S230, determine the third wear limit value dZS`.

[0092] In step S230, determine the third wear limit value dZS` of the not-go gauge 13 by subtracting the second margin B from the fourth lower deviation.

[0093] When the internal thread fails to pass the detection of the detection tool, it is necessary to replace the tool for machining the internal thread to ensure the machining accuracy of the internal thread. By subtracting the second margin B from the fourth lower deviation to determine the third wear limit value dZS` of the not-go gauge 13, when using the not-go gauge 13 to detect the internal thread, when the not-go gauge 13 reaches the third wear limit value dZS` due to wear, the not-go gauge 13 can be scrapped. Since the third wear limit value dZS` is less than the fourth lower deviation (the second wear limit value dZS), compared with scrapping when the not-go gauge 13 wears to the fourth lower deviation, the service life of the not-go gauge 13 can be extended, thereby increasing the service life of the detection tool, and thus reducing the production and detection costs of part processing. Although this will cause the tool to be scrapped and replaced in advance, since the price of the detection tool is much higher than the price of the tool, overall, it can increase the service life of the detection tool and reduce the production and detection costs of part processing.

[0094] Figure 8This is the second schematic flow chart of the usage method 200 of the internal thread measuring tool 10 in the embodiments of the present application, showing a step of obtaining the second margin B. As Figure 8 shown, the specific steps of the usage method 200 of the internal thread measuring tool 10 in the embodiments of the present application further include:

[0095] Step S221: Obtain the third price.

[0096] In step S221, the third price is the price of the go-no-go gauge 13. When the go gauge 12 and the no-go gauge 13 of the measuring tool 10 are Figure 1 arranged on the same operating rod 11 as shown, the scrapping of the no-go gauge 13 may mean that the operator discards the entire measuring tool 10. Scraping the entire measuring tool 10, so in this case the third price can be equal to the price of the measuring tool 10. However, the operator can also choose not to use the no-go gauge 13 and continue to use the go gauge 12. At this time, the price of the no-go gauge 13 can be calculated based on the price of the measuring tool 10, for example, taking half of the price of the measuring tool 10. When the go gauge 12 and the no-go gauge 13 of the measuring tool 10 are Figure 2 arranged on two operating rods 11 respectively as shown, the scrapping of the no-go gauge 13 will not affect the go gauge 12, so the third price can be the price of a single no-go gauge 13.

[0097] Step S222: Obtain the second price.

[0098] In step S222, the second price is the price of the tool used for machining the internal thread.

[0099] Step S223: Determine the second margin B.

[0100] In step S223, the first margin A is determined according to the first price and the second price.

[0101] Thus, by determining the second margin B according to the third price and the second price, it is possible to avoid the cost increased due to tool wear exceeding the cost of the wear of the no-go gauge 13 reduced by scrapping the no-go gauge 13 according to the third wear limit value dZS`. Thereby, while increasing the service life of the detection tool, it is possible to ensure a reduction in the production and detection costs of part machining.

[0102] In some embodiments, since the third price of the detection tool is about 5 times the second price of the tool, in view of this, the first margin A can be set to 0.005 - 0.008 mm, so as to increase the service life of the detection tool while ensuring a reduction in the production and detection costs of part machining and avoiding excessive replacement of tools, exceeding the detection cost saved by the detection tool.

[0103] Figure 9 This is the schematic flow chart of the internal thread machining method 300 in the embodiments of the present application. AsFigure 9 As shown in the figure, the present application also provides an internal thread processing method 300, and the specific steps may include:

[0104] Step S301: Process the internal thread using a tool.

[0105] Step S302: Measure the internal thread using a go gauge 12.

[0106] In step S302, the go gauge 12 may be any possible implementation form of the go gauge 12 in the embodiments of the present application.

[0107] Step S303: Determine whether the go gauge 12 can be screwed into the internal thread.

[0108] In step S303, determine whether the go gauge 12 can be screwed into the internal thread. When the go gauge 12 can be screwed into the internal thread, the internal thread passes the detection of the go gauge 12, that is, the pitch diameter size of the internal thread is greater than the third lower deviation, and step S304 is entered; when the go gauge 12 cannot be screwed into the internal thread, the internal thread fails the detection of the go gauge 12, that is, the pitch diameter size of the internal thread is regarded as unqualified, and step S305 is entered.

[0109] Step S304: Determine whether the no-go gauge 13 can be screwed into the internal thread.

[0110] In step S304, determine whether the no-go gauge 13 can be screwed into the internal thread. When the no-go gauge 13 can be screwed into the internal thread, the internal thread fails the detection of the no-go gauge 13, that is, the pitch diameter size of the internal thread is regarded as unqualified, and step S305 is entered; when the go gauge 12 cannot be screwed into the internal thread, the internal thread passes the detection of the no-go gauge 13, that is, the pitch diameter size of the internal thread is less than the third upper deviation. Thus, it can be determined that the pitch diameter size of the internal thread is between the third lower deviation and the third upper deviation, that is, it can be determined that the pitch diameter size of the internal thread is qualified. Then, step S312 is entered.

[0111] Step S305: Replace the tool.

[0112] In step S305, when the go gauge 12 fails to be screwed into the internal thread, it indicates that the pitch diameter size of the internal thread is too small, and at this time, the tool needs to be replaced; when the no-go gauge 13 can be screwed into the internal thread, it indicates that the pitch diameter size of the internal thread is too large, and at this time, the tool needs to be replaced. After replacing the tool, step S312 is entered.

[0113] Step S312: Determine whether the number of processed threads reaches the batch quantity.

[0114] In step S312, when the batch quantity is not reached, return to continue processing the internal thread; when the batch quantity is reached, detect the go gauge and the no-go gauge in subsequent steps such as S306 and S309.

[0115] Step S306: Detect the go gauge 12.

[0116] In step S306, after using the go gauge 12 to detect the internal thread, in order to determine whether the wear amount of the go gauge 12 exceeds the first wear limit value, a thread detector can be used to detect the pitch diameter dimension of the go gauge 12. Specifically, the number of workpieces in a batch usually does not exceed 30, and can be, for example, 25. After the go gauge 12 completes the detection of a batch of workpieces, the go gauge 12 is detected once using a thread detector.

[0117] Step S307: Is the pitch diameter dimension of the go gauge 12 less than the first wear limit value?

[0118] In step S307, it is judged whether the pitch diameter dimension of the go gauge 12 is less than the first wear limit value. When the pitch diameter dimension of the go gauge 12 is greater than or equal to the first wear limit value, the go gauge 12 is qualified and the pitch diameter dimension of the internal thread can be detected. When the pitch diameter dimension of the go gauge 12 is less than the first wear limit value, the go gauge 12 is unqualified and cannot continue to detect the pitch diameter dimension of the internal thread. The go gauge 12 is scrapped and step S308 is entered.

[0119] Step S308: Replace the go gauge 12.

[0120] In step S308, when the pitch diameter dimension of the go gauge 12 is less than the first wear limit value, the go gauge 12 is unqualified and cannot continue to detect the pitch diameter dimension of the internal thread. The go gauge 12 is scrapped and a new go gauge 12 is replaced to detect the next batch of workpieces.

[0121] Step S309: Detect the no-go gauge 13.

[0122] In step S309, after using the no-go gauge 13 to detect the internal thread, in order to determine whether the wear amount of the no-go gauge 13 exceeds the third wear limit value, a thread detector can be used to detect the pitch diameter dimension of the no-go gauge 13. Specifically, similar to the go gauge 12, after the no-go gauge 13 completes the detection of a batch of workpieces, the no-go gauge 13 is detected once using a thread detector.

[0123] Step S310: Judge whether the dimension of the no-go gauge 13 is less than the third wear limit value?

[0124] In step S310, it is judged whether the pitch diameter dimension of the no-go gauge 13 is less than the third wear limit value. When the pitch diameter dimension of the no-go gauge 13 is greater than or equal to the third wear limit value, the no-go gauge 13 is qualified and the pitch diameter dimension of the internal thread can be detected. When the pitch diameter dimension of the no-go gauge 13 is less than the third wear limit value, the go gauge 12 is unqualified and cannot continue to detect the pitch diameter dimension of the internal thread. The no-go gauge 13 is scrapped and step S311 is entered.

[0125] Step S311: Replace the not-go gage 13.

[0126] In step S311, when the pitch diameter dimension of the not-go gage 13 is less than the third wear limit value, the not-go gage 13 is unqualified and cannot continue to detect the pitch diameter dimension of the internal thread. The not-go gage 13 is scrapped, and a new not-go gage 13 is replaced to detect the workpieces of the next batch.

[0127] As other embodiments, after machining a certain number of internal threads in batches, the go gage and the not-go gage can be detected first, and then the qualified go gage and not-go gage can be used to detect the internal threads. Alternatively, the go gage and the not-go gage can be used to detect the machined internal threads while machining new internal threads. If the thread detection is unqualified within the batch quantity, the tool is replaced. When the batch quantity is reached, it is detected whether the go gage and the not-go gage are qualified, and whether to replace the tool is determined according to the detection results of the go gage and the not-go gage.

[0128] The present application also provides a design method for the internal thread measuring tool 10. Next, with reference to the accompanying drawings, the specific steps of the design method 400 for the internal thread measuring tool 10 in the embodiments of the present application will be described in detail.

[0129] Figure 10 It is a schematic flow chart of the design method 400 for the internal thread measuring tool 10 in the embodiments of the present application. As Figure 10 shown, the specific steps of the design method 400 for the internal thread measuring tool 10 in the embodiments of the present application include:

[0130] Step S410: Obtain the first manufacturing tolerance zone T.

[0131] In step S410, obtain the first manufacturing tolerance zone T of the go gage 12. The first manufacturing tolerance zone T is the national standard manufacturing tolerance zone of the go gage 12. The first manufacturing tolerance zone T includes the first upper deviation and the first lower deviation, and may also include the basic size. The go gage 12 made using the first manufacturing tolerance zone T is used to detect the internal thread. The go gage 12 is likely to be worn so that the size of the go gage 12 is less than the lower limit size, resulting in the scrapping of the go gage 12 because it cannot accurately detect the internal thread.

[0132] Step S420: Obtain the first margin A of the measuring tool 10.

[0133] The determination of the first margin A can refer to steps S121 - S125 in the determination method 100 for the internal thread measuring tool 10, which will not be elaborated here.

[0134] Step S430: Determine the second manufacturing tolerance zone T`.

[0135] In step S430, the upper deviation and the lower deviation of the first manufacturing tolerance zone T are respectively added to the first margin A to determine the upper deviation and the lower deviation of the second manufacturing tolerance zone T' of the go gauge 12.

[0136] The present application also provides a manufacturing method of the internal thread measuring tool 10. This manufacturing method may include the above design method. Next, with reference to the drawings, the specific steps of the manufacturing method 500 of the internal thread measuring tool 10 in the embodiments of the present application will be described in detail.

[0137] Figure 11 It is a schematic flow chart of the manufacturing method 500 of the internal thread measuring tool 10 in the embodiments of the present application. As Figure 11 shown, the specific steps of the manufacturing method 500 of the internal thread measuring tool 10 in the embodiments of the present application include:

[0138] Step S510, obtain the first manufacturing tolerance zone T.

[0139] In step S510, the first manufacturing tolerance zone T of the go gauge 12 is obtained. The first manufacturing tolerance zone T is the national standard manufacturing tolerance zone of the go gauge 12. The first manufacturing tolerance zone T includes the upper deviation and the lower deviation, and may also include the basic size. When the go gauge 12 manufactured using the first manufacturing tolerance zone T is used to detect the internal thread, the go gauge 12 is likely to be worn, causing the size of the go gauge 12 to be smaller than the lower limit size, so that the go gauge 12 is scrapped because it cannot accurately detect the internal thread.

[0140] Step S520, obtain the first margin A of the measuring tool 10.

[0141] For the determination of the first margin A, reference can be made to steps S121 - S125 in the determination method 100 of the internal thread measuring tool 10, which will not be elaborated here.

[0142] Step S530, determine the second manufacturing tolerance zone T'.

[0143] In step S530, the upper deviation and the lower deviation of the second manufacturing tolerance zone T' of the go gauge 12 are determined by respectively adding the upper deviation and the lower deviation of the first manufacturing tolerance zone T to the first margin A.

[0144] Step S540, manufacture the go gauge.

[0145] In step S504, the go gauge is manufactured according to the second manufacturing tolerance zone.

[0146] Figure 12 It is a schematic structural diagram of a computing device 600 provided by an embodiment of the present application. The computing device 600 includes: a processor 610, a memory 620, and a communication interface 630.

[0147] It should be understood that Figure 12 the communication interface 630 in the computing device 600 shown can be used for communication with other devices.

[0148] Among them, the processor 610 can be connected to the memory 620. The memory 620 can be used to store the program code and data. Therefore, the memory 620 can be a storage unit inside the processor 610, an external storage unit independent of the processor 610, or a component including a storage unit inside the processor 610 and an external storage unit independent of the processor 610.

[0149] It should be understood that in the embodiments of the present application, the processor 610 can adopt a central processing unit (CPU). The processor can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. Or the processor 610 adopts one or more integrated circuits to execute relevant programs to implement the technical solutions provided by the embodiments of the present application.

[0150] The memory 620 can include a read-only memory and a random access memory and provide instructions and data to the processor 610. A part of the processor 610 can also include a non-volatile random access memory. For example, the processor 610 can also store information about the device type.

[0151] When the computing device 600 is running, the processor 610 executes the computer-executable instructions in the memory 620 to perform the operation steps of the above method.

[0152] It should be understood that the computing device 600 according to the embodiments of the present application can correspond to the corresponding subject executing the methods according to the embodiments of the present application, and the above and other operations and / or functions of each module in the computing device 600 respectively correspond to the corresponding processes of the methods in each embodiment. For the sake of brevity, they will not be described in detail here.

[0153] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0154] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0155] In several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of devices or units can be electrical, mechanical, or other forms.

[0156] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0157] In addition, the functional units in each embodiment of this application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0158] When the above functions are realized in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs.

[0159] An embodiment of this application also provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, it is used to execute a method for generating diverse problems, and this method includes at least one of the solutions described in the above various embodiments.

[0160] The computer storage medium of the embodiments of this application can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination of the above. More specific examples (a non-exhaustive list) of the computer-readable storage medium include: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, the computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, device, or component.

[0161] The computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries the computer-readable program code. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium, and this computer-readable medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, device, or component.

[0162] The program code contained on a computer-readable medium can be transmitted using any appropriate medium, including but not limited to wireless, wire, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0163] The computer program code for performing the operations of the present application can be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (for example, by using an Internet service provider to connect through the Internet).

[0164] Note that the above is only a preferred embodiment of the present application and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present application has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, all of which fall within the protection scope of the present invention.

Claims

1. A determination method for an internal thread measuring tool, the measuring tool including a go gauge, the go gauge being used to detect whether the pitch diameter dimension of the internal thread is greater than the third lower deviation of a third manufacturing tolerance zone, the third manufacturing tolerance zone being the tolerance zone followed when manufacturing the internal thread, characterized in that, Including: Obtain the first manufacturing tolerance zone of the go gauge, where the first manufacturing tolerance zone includes a first upper deviation and a first lower deviation, the first lower deviation is equal to the third lower deviation, and the dimension corresponding to the first lower deviation and the third lower deviation is the first wear limit value of the go gauge. When the pitch diameter dimension of the go gauge is less than the first wear limit value, scrap the go gauge; Obtain the first margin of the measuring tool, including obtaining the price of the go gauge, obtaining the price of the tool for machining the internal thread, and determining the first margin according to the multiple difference between the price of the go gauge and the price of the tool; or, including obtaining the third upper deviation and the third lower deviation of the third manufacturing tolerance zone of the internal thread pitch diameter, and setting the first margin to 8% - 12% of the difference between the third upper deviation and the third lower deviation; Determine the second upper deviation and the second lower deviation of the second manufacturing tolerance zone of the go gauge by adding the first upper deviation and the first lower deviation of the first manufacturing tolerance zone to the first margin respectively.

2. A method for using an internal thread measuring tool, the measuring tool includes a no-go gauge, and the no-go gauge is used to detect whether the pitch diameter dimension of the internal thread is less than the third upper deviation of the third manufacturing tolerance zone, and the third manufacturing tolerance zone is the tolerance zone followed when manufacturing the internal thread, characterized in that Obtain the fourth manufacturing tolerance zone of the no-go gauge, where the fourth manufacturing tolerance zone includes a fourth upper deviation and a fourth lower deviation, the fourth upper deviation is equal to the third upper deviation, and the dimension corresponding to the fourth lower deviation is the second wear limit value of the no-go gauge; Obtain the second margin of the measuring tool; the method for obtaining the second margin of the measuring tool includes obtaining the price of the no-go gauge, obtaining the price of the tool for machining the internal thread, and determining the second margin according to the price of the no-go gauge and the price of the tool for machining the internal thread; or, the second margin is 0.005 - 0.008 mm; Determine the third wear limit value of the no-go gauge by subtracting the second margin from the fourth lower deviation. When the pitch diameter dimension of the no-go gauge is less than the third wear limit value, scrap the no-go gauge.

3. A method for machining internal threads, characterized in that, Including: Use a tool to machine the internal thread; Use the determination method described in claim 1 to determine the measuring tool, and the measuring tool includes a go gauge; Use the determined measuring tool to detect the internal thread; When the go gauge cannot be screwed into the internal thread, replace the tool.

4. The internal thread processing method according to claim 3, characterized in that, The measuring tool further includes a no-go gauge, and the internal thread machining method further includes: Detect the internal thread by the method for using the internal thread measuring tool described in claim 2; When the no-go gauge is screwed into the internal thread, replace the tool.

5. A computing device, characterized in that, Including a processor and a memory, The memory stores program instructions, and when the program instructions are executed by the processor, the processor is caused to execute the method described in claim 1.

6. A computer-readable storage medium, characterized in that, Program instructions are stored thereon, and when the program instructions are executed by a computer, the computer is caused to execute the method described in claim 1.

Images