A processing mold and processing method for non-full circle thread parts

Abstract

This application discloses a machining mold and machining method for non-circular threaded parts. The machining mold for non-circular threaded parts includes: a positioning fixture with a first mounting position and a second mounting position; a front machining mold detachably mounted on the first mounting position of the positioning fixture, comprising a front mold insert and a front mold block, the front mold block being detachably mounted on the front mold insert; and a rear machining mold detachably mounted on the second mounting position of the positioning fixture, comprising a rear mold insert and a rear mold block, the rear mold block being detachably mounted on the rear mold insert. After machining, the front mold insert and the rear mold block can be closed to form a non-circular threaded part. This application can be used with CNC equipment to machine the threads of non-circular threaded parts, improving machining efficiency and quality, and increasing the pass rate of machined parts.

Description

Technical Field

[0001] This application relates to the technical field of threaded parts processing, and more specifically, to a processing mold and processing method for non-circular threaded parts. Background Technology

[0002] Non-circular threaded parts, also known as D-shaped threaded parts, have a non-circular cross-section of the threaded surface, and the whole part is D-shaped.

[0003] Currently, non-circular threaded parts are typically formed using EDM (Electrical Discharge Machining). However, this method has low processing efficiency and a low pass rate for the produced non-circular threaded parts. The surface of the produced non-circular threaded parts is also relatively rough, making it difficult to meet the requirements of high-standard non-circular threaded parts. In addition, when processing non-circular threaded parts in batches, inconsistencies in processing quality and dimensions are likely to occur.

[0004] Existing CNC equipment can achieve high-precision machining of parts, but there are currently no tools that can be used with CNC equipment to process non-circular threaded parts, especially for batch processing of non-circular threaded parts. Summary of the Invention

[0005] The purpose of this application is to provide a machining mold and machining method for non-circular threaded parts. The machining mold for non-circular threaded parts can be used with CNC equipment. By machining the threads of non-circular threaded parts with CNC equipment, the machining efficiency and quality of non-circular threaded parts can be improved, the pass rate of machined parts can be increased, and it is suitable for the machining of batches of non-circular threaded parts, so that the machining quality and dimensions of batches of non-circular threaded parts are uniform.

[0006] To achieve the above objectives, in a first aspect, this application provides a machining die for non-circular threaded parts, comprising:

[0007] A positioning fixture, wherein the positioning fixture is provided with a first mounting position and a second mounting position;

[0008] A pre-processing mold is detachably disposed at the first mounting position of the positioning fixture. The pre-processing mold includes a pre-mold insert and a pre-mold block, and the pre-mold block is detachably disposed on the pre-mold insert.

[0009] The post-processed mold is detachably mounted on the second mounting position of the positioning fixture. The post-processed mold includes a post-mold insert and a post-mold block, and the post-mold block is detachably mounted on the post-mold insert.

[0010] The front mold insert and the rear mold insert can be processed and molded together to form a non-circular threaded part.

[0011] In the implementation of the above technical solution, the machining mold for non-circular threaded parts of this application can be used with CNC equipment. The CNC equipment is used to machine the threads of the non-circular threaded parts. During machining, the front mold insert is fixedly mounted on the front mold insert, and the rear mold insert is fixedly mounted on the rear mold insert. The front mold is fixedly mounted on the first mounting position of the positioning fixture, and the rear mold is fixedly mounted on the second mounting position of the positioning fixture. Then, the assembled machining mold for the non-circular threaded parts is fixedly mounted on the machining position of the CNC equipment. The CNC equipment is used to machine the threads on the front mold insert and the rear mold insert respectively. After machining, the front mold insert and the rear mold insert can be molded into a non-circular threaded part through mold closing. Because the threads of the non-circular threaded parts are machined by the CNC equipment, the threads of the non-circular threaded parts can be... The more precise machining of the threads can improve the machining efficiency and quality of non-circular threaded parts, and increase the pass rate of the machined parts. Furthermore, the machining front mold and positioning fixture, front mold insert and front mold block, machining rear mold and positioning fixture, and rear mold insert and rear mold block are all detachable, making the machining mold for non-circular threaded parts of this application applicable to the machining of batches of non-circular threaded parts. When machining threads of batches of non-circular threaded parts, the machining front mold and machining rear mold, or the front mold insert and rear mold block, can be replaced, and the parameters and tools for machining batches of non-circular threaded parts of CNC equipment can be unified, so that the machining quality and dimensions of batches of non-circular threaded parts can be uniform, which is especially beneficial to the machining of batches of non-circular threaded parts.

[0012] In a preferred embodiment of this application, the first mounting position and the second mounting position of the positioning fixture are two positioning grooves provided on the positioning fixture.

[0013] In the implementation of the above technical solution, the first and second mounting positions of the positioning fixture adopt the structure of positioning grooves, which can facilitate the installation and fixation of the front and rear molds, and can limit and accurately position the front and rear molds, thereby better ensuring the processing quality and processing effect of non-circular threaded parts.

[0014] In a preferred embodiment of this application, the front mold insert is mounted on the first mounting position of the positioning fixture by fastening bolts, and the rear mold insert is mounted on the second mounting position of the positioning fixture by fastening bolts.

[0015] In the process of implementing the above technical solution, the use of fastening bolts for installation and fixing can make the front mold insert and the rear mold insert more firmly fixed on the positioning fixture, which can effectively ensure the processing quality and processing effect of non-circular threaded parts.

[0016] In a preferred embodiment of this application, the positioning fixture includes a fixture base and a fixture body.

[0017] The fixture body is detachably mounted on the fixture base, and the first mounting position and the second mounting position are mounted on the fixture body.

[0018] In the implementation of the above technical solution, the main body of the positioning fixture is detachably mounted on the fixture base, which facilitates the installation and fixing of the front mold insert and the rear mold insert on the main body of the fixture, thereby further improving the processing efficiency of batch non-circular threaded parts.

[0019] In a preferred embodiment of this application, the fixture body is detachably mounted on the fixture base by fastening bolts.

[0020] In the implementation of the above technical solution, the fixture body is detachably mounted on the fixture base by fastening bolts, which can make the fixture body more firmly fixed on the fixture base and avoid the fixture body from shifting as much as possible. This can effectively ensure the processing quality and processing effect of non-circular threaded parts.

[0021] Secondly, this application provides a method for processing non-circular threaded parts, which utilizes the aforementioned processing mold for non-circular threaded parts. The processing method includes:

[0022] The front mold insert is placed on the front mold insert, and the rear mold insert is placed on the rear mold insert;

[0023] The pre-processing mold is placed in the first mounting position of the positioning fixture, and the post-processing mold is placed in the second mounting position of the positioning fixture;

[0024] The machining mold of the assembled non-circular threaded part is set on the CNC machine, and the CNC machine is used to machine the threads on the front mold insert and the rear mold insert respectively.

[0025] The processed front mold insert and rear mold insert are combined to form a non-circular threaded part.

[0026] In the implementation of the above technical solution, the machining mold for non-circular threaded parts is used in conjunction with CNC equipment. By using CNC equipment to process the threads of non-circular threaded parts, the threads of non-circular threaded parts can be machined more precisely, which can improve the processing efficiency and quality of non-circular threaded parts and increase the pass rate of machined parts. Furthermore, it can be used for batch processing of non-circular threaded parts. By replacing the front and rear machining molds, or replacing the front and rear mold inserts, and by unifying the parameters and tools of the CNC equipment for batch processing of non-circular threaded parts, the processing quality and dimensions of batch non-circular threaded parts can be made uniform, which is particularly beneficial for batch processing of non-circular threaded parts.

[0027] In a preferred embodiment of this application, the CNC equipment is a five-axis CNC equipment.

[0028] In the implementation of the above technical solution, a five-axis CNC machine is used. The five-axis CNC machine has a higher speed and its machining spindle has a steering function, which can adjust the swing axis angle of the machining spindle to improve the machining precision and machining quality of non-circular threaded parts.

[0029] In a preferred embodiment of this application, when the five-axis CNC machine processes threads on the front mold insert and the rear mold insert respectively, the swing axis angle of the machining spindle of the five-axis CNC machine is 35°-40°.

[0030] In the implementation of the above technical solution, the swing axis angle of the machining spindle of the five-axis CNC equipment is 35°-40°, which can make the machining quality and machining effect of the five-axis CNC equipment on the front mold insert and the rear mold insert optimal.

[0031] In a preferred embodiment of this application, when the CNC equipment processes threads on the front mold insert and the rear mold insert respectively, it first uses a first tool to process the threads and then uses a second tool to process the threads.

[0032] The angle between the machining slope of the first tool and its axis is 14°-16°, and the angle between the machining slope of the second tool and its axis is 8°-9°.

[0033] In the implementation of the above technical solution, the first tool is used for thread machining, and then the second tool is used for thread machining. The angle between the machining slope of the second tool and its axis is smaller than that of the first tool. This allows for secondary machining of the threads of the front mold insert and the rear mold insert. Furthermore, the machining process transitions from coarse to fine, which can significantly improve the machining precision and quality of threads on non-circular threaded parts.

[0034] In a preferred embodiment of this application, the first cutting tool includes a plurality of sub-cutting tools with different diameters;

[0035] When using the first cutting tool to perform thread machining on the front mold insert and the rear mold insert respectively, the thread machining is performed sequentially using sub-cutting tools with diameters decreasing from large to small.

[0036] In the process of implementing the above technical solution, when the first tool is used to perform thread processing on the front mold insert and the rear mold insert respectively, multiple thread processing operations are performed by sub-tools with diameters decreasing in sequence, which can significantly improve the processing precision and processing quality of threads on non-circular threaded parts.

[0037] This application discloses a machining mold and machining method for non-full-circle threaded parts, which, compared with the prior art, has at least the following advantages:

[0038] This application discloses a machining mold for non-circular threaded parts, which can be used with CNC equipment to machine the threads of non-circular threaded parts. The mold includes a positioning fixture, a front machining mold, and a rear machining mold. The positioning fixture has a first mounting position and a second mounting position. The front machining mold is detachably mounted at the first mounting position of the positioning fixture and includes a front mold insert and a front mold block, with the front mold block detachably mounted on the front mold insert. The rear machining mold is detachably mounted at the second mounting position of the positioning fixture and includes a rear mold insert and a rear mold block, with the rear mold block detachably mounted on the rear mold insert. After machining, the front mold insert and the rear mold block can be closed to form a non-circular threaded part. During machining, the front mold insert is securely mounted on the front mold piece, and the rear mold insert is securely mounted on the rear mold piece. The front mold is secured to the first mounting position of the positioning fixture, and the rear mold is secured to the second mounting position of the positioning fixture. Then, the assembled machining mold for the non-circular threaded part is secured to the machining position of the CNC machine. The CNC machine then processes the threads on both the front and rear mold inserts. After machining, the front and rear mold inserts can be molded into a non-circular threaded part through mold closing. Because the threads of the non-circular threaded part are machined using CNC equipment, the thread machining of the non-circular threaded part can be made more precise. The precision of the die can improve the processing efficiency and quality of non-circular threaded parts, and increase the pass rate of the processed parts. Furthermore, the processing die for non-circular threaded parts of this application can be applied to the processing of batches of non-circular threaded parts. When processing the threads of batches of non-circular threaded parts, the front die and the rear die can be replaced by replacing the front die insert and the rear die insert. This unifies the parameters and tools used by the CNC equipment to process batches of non-circular threaded parts, thereby ensuring that the processing quality and dimensions of batches of non-circular threaded parts are uniform, which is particularly beneficial for the processing of batches of non-circular threaded parts.

[0039] This application discloses a method for machining non-circular threaded parts. The method involves using a machining mold for non-circular threaded parts with a CNC machine. By machining the threads of the non-circular threaded parts using the CNC machine, the threads can be machined more precisely, improving machining efficiency and quality, and increasing the pass rate of the machined parts. Furthermore, this method can be used for batch machining of non-circular threaded parts. By replacing the front and rear machining molds, or by replacing the front and rear mold inserts, and by standardizing the parameters and tools used by the CNC machine for batch machining of non-circular threaded parts, the machining quality and dimensions of the batch of non-circular threaded parts can be made uniform, which is particularly beneficial for batch machining of non-circular threaded parts. Attached Figure Description

[0040] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a first three-dimensional structural schematic diagram of a machining mold for a non-circular threaded part provided in an embodiment of this application;

[0042] Figure 2 This is a second three-dimensional structural schematic diagram of a machining mold for non-circular threaded parts provided in an embodiment of this application;

[0043] Figure 3 This is an exploded view of the structure of a machining mold for a non-circular threaded part provided in an embodiment of this application;

[0044] Figure 4 This is a three-dimensional structural diagram of the pre-processing mold and the post-processing mold provided in the embodiments of this application;

[0045] Figure 5 This is a schematic diagram of a non-circular threaded part provided in an embodiment of this application;

[0046] Figure 6 This is a schematic flowchart illustrating a method for processing non-circular threaded parts according to an embodiment of this application.

[0047] Reference numerals: 11-Positioning fixture; 111- Fixture base; 112- Fixture body; 113-First mounting position; 114-Second mounting position; 12-Front mold; 121-Front mold insert; 122-Front mold block; 13-Rear mold; 131-Rear mold insert; 132-Rear mold block. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0049] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0050] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0051] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or a point connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0052] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0053] Currently, EDM (Electrical Discharge Machining) is commonly used to form threads for non-circular threaded parts. However, this machining method has low processing efficiency and a low pass rate for the produced non-circular threaded parts. The surface of the produced non-circular threaded parts is also relatively rough, making it difficult to meet the requirements of high-standard non-circular threaded parts. In addition, when processing non-circular threaded parts in batches, it is easy to encounter inconsistent processing quality and dimensions among the batches of non-circular threaded parts.

[0054] Existing CNC equipment can achieve high-precision machining of parts, but there are currently no tools that can be used with CNC equipment to process non-circular threaded parts, especially for batch processing of non-circular threaded parts.

[0055] To address the problems in the prior art, this application provides a machining mold and machining method for non-circular threaded parts. It can be used with CNC equipment to machine the threads of non-circular threaded parts, thereby improving the machining efficiency and quality of non-circular threaded parts, increasing the pass rate of machined parts, and being suitable for batch machining of non-circular threaded parts, so that the machining quality and dimensions of batch non-circular threaded parts are uniform.

[0056] Example 1

[0057] See Figures 1 to 5 A machining die for a non-circular threaded part according to an embodiment of this application includes:

[0058] Positioning fixture 11, which is provided with a first mounting position 113 and a second mounting position 114;

[0059] The front mold 12 is detachably mounted on the first mounting position 113 of the positioning fixture 11. The front mold 12 includes a front mold insert 121 and a front mold block 122, and the front mold block 122 is detachably mounted on the front mold insert 121.

[0060] The post-processed mold 13 is detachably mounted on the second mounting position 114 of the positioning fixture 11. The post-processed mold 13 includes a post-mold insert 131 and a post-mold block 132, with the post-mold block 132 detachably mounted on the post-mold insert 131.

[0061] After processing, the front mold insert 122 and the rear mold insert 132 can be molded into non-circular threaded parts.

[0062] In this embodiment, for non-full-circle threaded parts, please refer to... Figure 5 , Figure 5 An exemplary non-full-circle threaded part is given; it can be understood that, as Figure 5The non-circular threaded part shown is only one structural form of non-circular threaded parts; non-circular threaded parts can also have other structures.

[0063] In this embodiment, the positioning fixture 11 is used to install and fix the front mold 12 and the rear mold 13. When the processing mold for non-circular threaded parts is used to process threads, the processing mold for non-circular threaded parts is used in an assembled manner. When processing threads, the threads are processed on the front mold insert 122 and the rear mold insert 132. After processing, the front mold insert 122 and the rear mold insert 132 can be molded into non-circular threaded parts by closing the mold.

[0064] This application provides a machining mold for a non-circular threaded part, which can be used with a CNC machine. The CNC machine is used to machine the threads of the non-circular threaded part. During machining, the front mold insert 122 is fixedly mounted on the front mold insert 121, and the rear mold insert 132 is fixedly mounted on the rear mold insert 131. The front mold 12 is fixedly mounted on the first mounting position 113 of the positioning fixture 11, and the rear mold 13 is fixedly mounted on the second mounting position 114 of the positioning fixture 11. The assembled machining mold for the non-circular threaded part is then fixed in the machining position of the CNC machine. The CNC machine is used to machine the threads on the front mold insert 122 and the rear mold insert 132 respectively. After machining, the front mold insert 122 and the rear mold insert 132 can be molded into a non-circular threaded part through mold closing. Because the threads of the non-circular threaded part are machined by the CNC machine, the threads of the non-circular threaded part can be... The more precise machining can improve the machining efficiency and quality of non-circular threaded parts, and increase the pass rate of machined parts. Furthermore, the machining front mold 12 and positioning fixture 11, front mold insert 121 and front mold insert 122, machining rear mold 13 and positioning fixture 11, and rear mold insert 131 and rear mold insert 132 are all detachably configured, making the machining mold for non-circular threaded parts of this application applicable to the machining of batches of non-circular threaded parts. When machining the threads of batches of non-circular threaded parts, the machining front mold 12 and machining rear mold 13, or the machining front mold insert 122 and rear mold insert 132, can be replaced, and the parameters and tools for machining batches of non-circular threaded parts of CNC equipment can be unified, so that the machining quality and dimensions of batches of non-circular threaded parts can be unified, which is especially beneficial to the machining of batches of non-circular threaded parts.

[0065] In this embodiment, the positioning fixture 11 includes a fixture base 111 and a fixture body 112. The fixture body 112 is detachably disposed on the fixture base 111, and the first mounting position 113 and the second mounting position 114 are disposed on the fixture body 112.

[0066] In the above structure, the fixture body 112 of the positioning fixture 11 is detachably mounted on the fixture base 111, which facilitates the installation and fixing of the front mold insert 121 and the rear mold insert 131 on the fixture body 112, thereby further improving the processing efficiency of batch non-circular threaded parts.

[0067] It should be noted that in other embodiments, the positioning fixture 11 may also adopt an integrated structure, that is, the positioning fixture 11 may be used directly as an integral positioning fixture 11 without the fixture base 111.

[0068] Preferably, the fixture body 112 is detachably mounted on the fixture base 111 by fastening bolts.

[0069] The fixture body 112 is detachably mounted on the fixture base 111 by fastening bolts, which can make the fixture body 112 more firmly fixed on the fixture base 111, and minimize the possibility of displacement of the fixture body 112. This can effectively ensure the processing quality and processing effect of non-circular threaded parts.

[0070] Alternatively, in other embodiments, the fixture body 112 and the fixture base 111 may also be connected by a detachable structure that engages with each other.

[0071] Example 2

[0072] See Figures 1 to 5 Based on the above embodiment one, the difference between this embodiment and embodiment one is that in this embodiment, the first mounting position 113 and the second mounting position 114 of the positioning fixture 11 are two positioning grooves provided on the positioning fixture 11.

[0073] Specifically, two positioning grooves are arranged in parallel on the positioning fixture 11, and the dimensions of the two positioning grooves are adapted to the pre-processing mold 12 and the post-processing mold 13. In this embodiment, the positioning groove corresponding to the first mounting position 113 of the positioning fixture 11 adopts a shallow groove structure, and the positioning groove corresponding to the second mounting position 114 of the positioning fixture 11 can adopt a deep groove or a through groove structure.

[0074] In the above structure, the first mounting position 113 and the second mounting position 114 of the positioning fixture 11 adopt the structure of positioning grooves, which can facilitate the installation and fixation of the front mold 12 and the rear mold 13. Furthermore, it can limit and accurately position the front mold 12 and the rear mold 13, thereby better ensuring the processing quality and processing effect of non-circular threaded parts.

[0075] It should be noted that, in other embodiments, the first mounting position 113 and the second mounting position 114 of the positioning fixture 11 can also be the first mounting area and the second mounting area on the upper surface of the positioning fixture 11, and the size of the first mounting area and the second mounting area is adapted to the pre-processing mold 12 and the post-processing mold 13.

[0076] Alternatively, in other embodiments, the first mounting position 113 and the second mounting position 114 of the positioning fixture 11 can also be formed by the first clamping structure and the second clamping structure. That is, the positioning fixture 11 can be provided with the first clamping structure and the second clamping structure, the first mounting position 113 is formed by the first clamping structure, and the second mounting position 114 is formed by the second clamping structure.

[0077] Example 3

[0078] See Figures 1 to 5 Based on the above embodiment one or embodiment two, the difference between this embodiment and embodiment one or embodiment two is that, in this embodiment, a processing mold for a non-circular threaded part, the front mold insert 121 is set in the first mounting position 113 of the positioning fixture 11 by fastening bolts, and the rear mold insert 131 is set in the second mounting position 114 of the positioning fixture 11 by fastening bolts.

[0079] In this embodiment, based on a processing mold for a non-circular threaded part in Embodiment 2, the above-mentioned structure of this embodiment is described by way of example. Based on Embodiment 2, the positioning groove corresponding to the first mounting position 113 of the fixture body 112 adopts a shallow groove structure, and the positioning groove corresponding to the second mounting position 114 of the fixture body 112 adopts a through groove structure. The bottom of the fixture body 112 may be provided with a mounting recess for setting the front mold insert 121 on the shallow groove corresponding to the first mounting position 113 of the fixture body 112 by fastening bolts. The rear mold insert 131 passes into the through groove corresponding to the second mounting position 114 of the fixture body 112 and is set on the fixture base 111 by fastening bolts.

[0080] In the above structure, the use of fastening bolts for installation and fixation allows the front mold insert 121 and the rear mold insert 131 to be more firmly fixed on the positioning fixture 11, which can effectively ensure the processing quality and processing effect of non-circular threaded parts.

[0081] Example 4

[0082] See Figures 1 to 6 This application provides a method for processing non-circular threaded parts, which can utilize the processing mold for non-circular threaded parts from any of the embodiments one to three described above. The processing method includes:

[0083] S110, the front mold insert 122 is disposed on the front mold insert 121, and the rear mold insert 132 is disposed on the rear mold insert 131;

[0084] S120, the pre-processing mold 12 is placed in the first mounting position 113 of the positioning fixture 11, and the post-processing mold 13 is placed in the second mounting position 114 of the positioning fixture 11;

[0085] S130, the machining mold of the assembled non-circular threaded part is set on the CNC equipment, and the CNC equipment is used to machine the threads on the front mold insert 122 and the rear mold insert 132 respectively;

[0086] S140, the processed front mold insert 122 and rear mold insert 132 are molded together to form a non-circular threaded part.

[0087] In the above processing method, the processing mold for non-circular threaded parts is used in conjunction with CNC equipment. By using CNC equipment to process the threads of non-circular threaded parts, the threads of non-circular threaded parts can be processed more precisely, which can improve the processing efficiency and quality of non-circular threaded parts and increase the pass rate of processed parts. Furthermore, it can be used for batch processing of non-circular threaded parts. By replacing the front mold 12 and the rear mold 13, or by replacing the front mold insert 122 and the rear mold insert 132, and by unifying the parameters and tools of the CNC equipment for batch processing of non-circular threaded parts, the processing quality and dimensions of batch non-circular threaded parts can be made uniform, which is especially beneficial for batch processing of non-circular threaded parts.

[0088] Example 5

[0089] See Figures 1 to 6 Based on the above embodiment four, the difference between this embodiment and embodiment four is that the CNC equipment used in this embodiment for processing a non-circular threaded part is a five-axis CNC equipment.

[0090] The CNC equipment uses a five-axis CNC machine, which has a higher speed and its machining spindle has a steering function. The tilting angle of the machining spindle can be adjusted to improve the machining precision and quality of threads on non-circular threaded parts.

[0091] Preferably, when the five-axis CNC machine is machining threads on the front mold insert 122 and the rear mold insert 132, the swing angle of the machining spindle of the five-axis CNC machine is 35°-40°.

[0092] In the above processing method, the swing axis angle of the machining spindle of the five-axis CNC equipment is 35°-40°, which can make the machining quality and processing effect of the five-axis CNC equipment on the front mold insert 122 and the rear mold insert 132 optimal.

[0093] Example 6

[0094] See Figures 1 to 6 Based on the above embodiment four or five, the difference between this embodiment and embodiment four or five is that, in the processing method of a non-circular threaded part in this embodiment, when the CNC equipment processes the threads on the front mold insert 122 and the rear mold insert 132 respectively, the first tool is used to process the threads first, and then the second tool is used to process the threads.

[0095] The angle between the machining slope of the first tool and its axis is 14°-16°, and the angle between the machining slope of the second tool and its axis is 8°-9°.

[0096] Preferably, there can be two sets of the first and second cutting tools, which are used in conjunction with the front mold insert 122 and the rear mold insert 132, respectively.

[0097] Understandably, when using the first and second cutting tools, they are set on the machining spindle of the CNC equipment. In specific use, they can be replaced on the machining spindle of the CNC equipment according to the order of use.

[0098] Preferably, the angle between the machining slope of the first tool and its axis is 15°, and the angle between the machining slope of the second tool and its axis is 8.7°.

[0099] In the above processing method, the first tool is used to process the thread first, and then the second tool is used to process the thread. The angle between the processing slope of the second tool and its axis is smaller than that of the first tool. This allows for secondary processing of the threads of the front mold insert 122 and the rear mold insert 132. Furthermore, the processing transitions from coarse to fine, which can significantly improve the processing precision and quality of threads on non-circular threaded parts.

[0100] Preferably, the first tool includes multiple sub-tools with different diameters; when the first tool is used to perform thread machining on the front mold insert 122 and the rear mold insert 132 respectively, the thread machining is performed sequentially by sub-tools with diameters decreasing from large to small.

[0101] For example, the first tool can have multiple sub-tools with different diameters, such as 4mm, 3mm, and 1mm, and the second tool can have a diameter of 0.6mm. When threading is performed sequentially using tools of 4mm, 3mm, 1mm, and 0.6mm, the tool of 4mm diameter can be used first for roughing with a single-sided allowance of 0.1mm, followed by medium-finish roughing with a single-sided allowance of 0.02mm using a tool of 3mm diameter, then semi-finishing with a single-sided allowance of 0.005mm using a tool of 1mm diameter, and finally fine finishing with a zero tolerance using a tool of 0.6mm diameter.

[0102] In the above processing method, when the first tool is used to perform thread processing on the front mold insert 122 and the rear mold insert 132 respectively, the sub-tools with diameters decreasing are used in sequence to perform thread processing multiple times, which can significantly improve the processing precision and processing quality of the threads of non-circular threaded parts.

[0103] In all the above embodiments, "large" and "small" are relative terms, "more" and "less" are relative terms, and "upper" and "lower" are relative terms. The embodiments of this application will not elaborate further on the expression of such relative terms.

[0104] It should be understood that phrases such as "in one embodiment," "in this embodiment," "in this application embodiment," or "as an optional implementation" throughout the specification mean that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, phrases such as "in one embodiment," "in this embodiment," "in this application embodiment," or "as an optional implementation" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this application.

[0105] In the various embodiments of this application, it should be understood that the sequence number of each process does not necessarily imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0106] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.

Claims

1. A method for machining non-circular threaded parts, characterized in that, A machining mold for non-circular threaded parts is applied, the machining mold for non-circular threaded parts comprising: Positioning fixture (11), wherein a first mounting position (113) and a second mounting position (114) are provided on the positioning fixture (11). A pre-processing mold (12) is detachably mounted on the first mounting position (113) of the positioning fixture (11). The pre-processing mold (12) includes a pre-mold insert (121) and a pre-mold block (122). The pre-mold block (122) is detachably mounted on the pre-mold insert (121). The post-processing mold (13) is detachably mounted on the second mounting position (114) of the positioning fixture (11). The post-processing mold (13) includes a post-mold insert (131) and a post-mold block (132). The post-mold block (132) is detachably mounted on the post-mold insert (131). The front mold insert (122) and the rear mold insert (132) can be combined after processing to form non-circular threaded parts; The processing method includes: The front mold insert (122) is disposed on the front mold insert (121), and the rear mold insert (132) is disposed on the rear mold insert (131); The pre-processing mold (12) is placed in the first mounting position (113) of the positioning fixture (11), and the post-processing mold (13) is placed in the second mounting position (114) of the positioning fixture (11). The machining mold of the assembled non-circular threaded part is set on the CNC equipment, and the CNC equipment is used to machine the threads on the front mold insert (122) and the rear mold insert (132) respectively. The processed front mold insert (122) and rear mold insert (132) are combined to form a non-circular threaded part; When the CNC equipment processes threads on the front mold insert (122) and the rear mold insert (132), it first uses the first tool to process the threads and then uses the second tool to process the threads. The angle between the machining slope of the first tool and its axis is 14°-16°, and the angle between the machining slope of the second tool and its axis is 8°-9°.

2. The method for machining non-circular threaded parts according to claim 1, characterized in that, The CNC equipment is a five-axis CNC equipment.

3. The method for processing non-circular threaded parts according to claim 2, characterized in that, When the five-axis CNC machine is machining threads on the front mold insert (122) and the rear mold insert (132), the swing angle of the machining spindle of the five-axis CNC machine is 35°-40°.

4. The method for machining non-circular threaded parts according to claim 1, characterized in that, The first tool includes multiple sub-tools with different diameters; When using the first cutting tool to perform thread machining on the front mold insert (122) and the rear mold insert (132), the thread machining is performed sequentially using sub-cutting tools with diameters decreasing from large to small.

5. The method for machining non-circular threaded parts according to claim 1, characterized in that, The first mounting position (113) and the second mounting position (114) of the positioning fixture (11) are two positioning grooves provided on the positioning fixture (11).

6. The method for machining non-circular threaded parts according to claim 1 or 5, characterized in that, The front mold insert (121) is mounted on the first mounting position (113) of the positioning fixture (11) by fastening bolts, and the rear mold insert (131) is mounted on the second mounting position (114) of the positioning fixture (11) by fastening bolts.

7. The method for machining non-circular threaded parts according to claim 1, characterized in that, The positioning fixture (11) includes a fixture base (111) and a fixture main body (112). The fixture body (112) is detachably mounted on the fixture base (111), and the first mounting position (113) and the second mounting position (114) are mounted on the fixture body (112).

8. The method for machining non-circular threaded parts according to claim 7, characterized in that, The fixture body (112) is detachably mounted on the fixture base (111) by fastening bolts.

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