Machining die and machining method for non-full-round thread part

Abstract

The invention discloses a machining mold and method for a non-full-round thread part, and the machining mold for the non-full-round thread part comprises a positioning jig which is provided with a first installation position and a second installation position; the front machining mold is detachably arranged at the first mounting position of the positioning jig, the front machining mold comprises a front mold insert and a front mold insert, and the front mold insert is detachably arranged on the front mold insert; the rear machining mold is detachably arranged at the second mounting position of the positioning jig, the rear machining mold comprises a rear mold insert and a rear mold insert, and the rear mold insert is detachably arranged on the rear mold insert; and the front mold insert and the rear mold insert can be closed to form a non-full-round thread part after being processed. The device can be used in cooperation with CNC equipment, threads of the non-full-round thread parts are machined through the CNC equipment, the machining efficiency and machining quality of the non-full-round thread parts can be improved, and the percent of pass of the machined parts is increased.

Description

Technical Field

[0001] The present application relates to the technical field of threaded part processing, and in particular to a processing mold and a processing method for non-full-circle threaded parts. Background Art

[0002] Non-circular threaded parts, namely D-shaped threaded parts, have a non-circular cross-section on the thread surface and are D-shaped as a whole.

[0003] At present, the forming threads of non-circular threaded parts are usually processed by EDM (Electrical Discharge Machining), but this processing method has low processing efficiency, and the qualified rate of the processed non-circular threaded parts is also low. The surface of the processed non-circular threaded parts is also rough, which makes it difficult to meet the requirements of high-standard non-circular threaded parts. At the same time, for the processing of batches of non-circular threaded parts, it is easy to have a situation where the processing quality and size of the batches of non-circular threaded parts are not uniform.

[0004] Existing CNC equipment can achieve high-precision processing of parts, but there is currently no equipment that can match CNC equipment for processing non-circular threaded parts, especially batch processing of non-circular threaded parts. Summary of the invention

[0005] The purpose of this application is to provide a processing mold and a processing method for non-circular threaded parts. The processing mold for non-circular threaded parts can be used in conjunction with CNC equipment. By using CNC equipment to process the threads of non-circular threaded parts, the processing efficiency and quality of non-circular threaded parts can be improved, the qualified rate of processed parts can be improved, and it is suitable for the processing of batches of non-circular threaded parts, which can make the processing quality and size of batches of non-circular threaded parts uniform.

[0006] In order to achieve the above objectives, in a first aspect, the present application provides a processing die for a non-full-circle threaded part, comprising: A positioning jig, wherein the positioning jig is provided with a first mounting position and a second mounting position; A processing front mold, the processing front mold is detachably arranged at the first installation position of the positioning fixture, the processing front mold comprises a front mold insert and a front mold insert block, and the front mold insert block is detachably arranged on the front mold insert; A processing rear mold, the processing rear mold is detachably arranged at the second installation position of the positioning fixture, the processing rear mold comprises a rear mold insert and a rear mold insert block, and the rear mold insert block is detachably arranged on the rear mold insert; The front mold insert and the rear mold insert can be molded into a non-full-circle threaded part after processing.

[0007] In the implementation process of the above technical solution, a processing mold for non-circular thread parts of the present application can be used in conjunction with a CNC device to process the threads of non-circular thread parts through the CNC device. During processing, the front mold insert is firmly fixed on the front mold insert piece, the rear mold insert is firmly fixed on the rear mold insert piece, and the front mold for processing is firmly fixed at the first installation position of the positioning fixture, and the rear mold for processing is firmly fixed at the second installation position of the positioning fixture. Then, the assembled processing mold for non-circular thread parts is firmly fixed at the processing position of the CNC device, and the CNC device is used to process threads on the front mold insert and the rear mold insert respectively. After processing, the front mold insert and the rear mold insert can be molded into non-circular thread parts through mold closing. Since the threads of the non-circular thread parts are processed by the CNC device, the threads of the non-circular thread parts can be processed more precisely, the processing efficiency and quality of the non-circular thread parts can be improved, and the qualification rate of the processed parts can be increased; moreover, the front mold for processing and the positioning fixture, the front mold insert piece and the front mold insert, the rear mold for processing and the positioning fixture, and the rear mold insert piece and the rear mold insert all adopt a detachable setting method, so that a processing mold for non-circular thread parts of the present application can be applicable to the processing of batch non-circular thread parts. When processing the threads of batch non-circular thread parts, replacement can be carried out by replacing the front mold for processing and the rear mold for processing, or by replacing the front mold insert and the rear mold insert, and the parameters and tools for the CNC device to process batch non-circular thread parts are unified, so that the processing quality and dimensions of batch non-circular thread parts can be unified, which is particularly beneficial to the processing of batch non-circular thread parts.

[0008] In a preferred embodiment of the present application, the first installation position and the second installation position of the positioning fixture are two positioning grooves provided on the positioning fixture.

[0009] In the implementation process of the above technical solution, the first installation position and the second installation position of the positioning fixture adopt the structure of positioning grooves, which can facilitate the installation and fixation of the front mold for processing and the rear mold for processing, and can play a role in limiting and precise positioning of the front mold for processing and the rear mold for processing, and further can better ensure the processing quality and effect of non-circular thread parts.

[0010] In a preferred embodiment of the present application, the front mold insert piece is arranged at the first installation position of the positioning fixture through a fastening bolt, and the rear mold insert piece is arranged at the second installation position of the positioning fixture through a fastening bolt.

[0011] In the implementation process of the above technical solution, the method of installation and fixation using fastening bolts can make the front mold insert piece and the rear mold insert piece more firmly fixed on the positioning fixture, and can effectively ensure the processing quality and effect of non-circular thread parts.

[0012] In a preferred embodiment of the present application, the positioning fixture includes a fixture base and a fixture body. The jig body is detachably disposed on the jig base, and the first mounting position and the second mounting position are disposed on the jig body.

[0013] In the process of implementing the above technical solution, the fixture body of the positioning fixture can be detachably arranged on the fixture base, which can facilitate the installation and fixation of the front mold insert and the rear mold insert on the fixture body, thereby further improving the processing efficiency of batches of non-circular threaded parts.

[0014] In a preferred embodiment of the present application, the jig body is detachably disposed on the jig base by fastening bolts.

[0015] In the process of implementing the above technical solution, the jig body is detachably arranged on the jig base by fastening bolts, so that the jig body can be more firmly fixed on the jig base, and the displacement of the jig body can be avoided as much as possible, thereby effectively ensuring the processing quality and processing effect of non-circular threaded parts.

[0016] In a second aspect, the present application provides a method for processing a non-full-circle threaded part, using the above-mentioned processing mold for the non-full-circle threaded part, and the processing method includes: Disposing the front mold insert on the front mold insert, and disposing the rear mold insert on the rear mold insert; The pre-processing mold is arranged at a first installation position of the positioning fixture, and the post-processing mold is arranged at a second installation position of the positioning fixture; The assembled processing mold of the non-full-circle threaded parts is set on the CNC equipment, and the threads are processed on the front mold insert and the rear mold insert respectively by using the CNC equipment; The processed front mold insert and rear mold insert are molded together to form a non-full-circle threaded part.

[0017] In the process of implementing the above technical scheme, the processing mold of the non-circular threaded parts is used in conjunction with the CNC equipment. The CNC equipment is used to process the threads of the non-circular threaded parts, which can make the threads of the non-circular threaded parts more precisely processed, improve the processing efficiency and processing quality of the non-circular threaded parts, and improve the qualified rate of the processed parts; and it can be used for the processing of batches of non-circular threaded parts by replacing the front mold and the rear mold, or replacing the front mold insert and the rear mold insert, and unifying the parameters and tools of the CNC equipment for processing batches of non-circular threaded parts, so that the processing quality and size of batches of non-circular threaded parts can be unified, which is particularly beneficial for the processing of batches of non-circular threaded parts.

[0018] In a preferred embodiment of the present application, the CNC device is a five-axis CNC device.

[0019] In the implementation process of the above technical solution, the CNC device adopts a five-axis CNC device. The five-axis CNC device has a higher rotational speed, and its machining spindle has a steering function, and the swing angle of the machining spindle can be adjusted to improve the machining precision and quality of the threads of non-circular thread parts.

[0020] In a preferred embodiment of the present application, when the five-axis CNC device processes threads on the front mold insert and the rear mold insert respectively, the swing angle of the machining spindle of the five-axis CNC device is 35° - 40°.

[0021] In the implementation process of the above technical solution, when the swing angle of the machining spindle of the five-axis CNC device is 35° - 40°, the machining quality and effect of the five-axis CNC device for processing threads on the front mold insert and the rear mold insert can be optimized.

[0022] In a preferred embodiment of the present application, when the CNC device processes threads on the front mold insert and the rear mold insert respectively, it first uses a first tool for thread machining and then uses a second tool for thread machining; The angle between the machining inclined surface of the first tool and its axis is 14° - 16°, and the angle between the machining inclined surface of the second tool and its axis is 8° - 9°.

[0023] In the implementation process of the above technical solution, first use a first tool for thread machining, then use a second tool for thread machining, and the angle between the machining inclined surface of the second tool and its axis is smaller than that of the first tool, which can perform secondary machining on the threads of the front mold insert and the rear mold insert. Moreover, the machining process transitions from rough to fine, which can significantly improve the machining precision and quality of the threads of non-circular thread parts.

[0024] In a preferred embodiment of the present application, the first tool includes multiple sub-tools with different diameters; When using the first tool to process threads on the front mold insert and the rear mold insert respectively, the sub-tools with diameters decreasing from large to small are sequentially used for thread machining.

[0025] In the implementation process of the above technical solution, when using the first tool to process threads on the front mold insert and the rear mold insert respectively, the sub-tools with diameters decreasing from large to small are also sequentially used for multiple thread machinings, which can significantly improve the machining precision and quality of the threads of non-circular thread parts.

[0026] A processing mold and processing method for a non-circular thread part of the present application, compared with the prior art, has at least the following beneficial effects: A processing mold for non-circular thread parts of the present application can be used in conjunction with CNC equipment to process the threads of non-circular thread parts through the CNC equipment. It includes a positioning fixture, a pre-processing mold, and a post-processing mold. Among them, a first installation position and a second installation position are provided on the positioning fixture; the pre-processing mold is detachably arranged at the first installation position of the positioning fixture, and the pre-processing mold includes a pre-mold insert and a pre-mold block, and the pre-mold block is detachably arranged on the pre-mold insert; the post-processing mold is detachably arranged at the second installation position of the positioning fixture, and the post-processing mold includes a post-mold insert and a post-mold block, and the post-mold block is detachably arranged on the post-mold insert; the pre-mold block and the post-mold block can be combined and molded into a non-circular thread part after processing. During processing, the pre-mold block is fixed on the pre-mold insert, the post-mold block is fixed on the post-mold insert, and the pre-processing mold is fixed at the first installation position of the positioning fixture, and the post-processing mold is fixed at the second installation position of the positioning fixture. Then, the processing mold for the non-circular thread part assembled is fixed at the processing position of the CNC equipment, and the CNC equipment is used to process the threads on the pre-mold block and the post-mold block respectively. The pre-mold block and the post-mold block can be combined and molded into a non-circular thread part after processing. Since the threads of the non-circular thread part are processed by the CNC equipment, the threads of the non-circular thread part can be processed more precisely, the processing efficiency and processing quality of the non-circular thread part can be improved, and the qualification rate of the processed parts can be increased; moreover, a processing mold for non-circular thread parts of the present application can be applied to the processing of batch non-circular thread parts. When processing the threads of batch non-circular thread parts, replacement can be carried out by replacing the pre-processing mold and the post-processing mold, or by replacing the pre-mold block and the post-mold block, and the parameters and tools for the CNC equipment to process batch non-circular thread parts are unified, so that the processing quality and dimensions of batch non-circular thread parts can be unified, which is particularly beneficial to the processing of batch non-circular thread parts.

[0027] A processing method for non-circular thread parts of the present application uses the processing mold for non-circular thread parts in conjunction with CNC equipment to process the threads of non-circular thread parts through the CNC equipment, which can make the threads of non-circular thread parts processed more precisely, improve the processing efficiency and processing quality of non-circular thread parts, and increase the qualification rate of processed parts; moreover, it can be used for the processing of batch non-circular thread parts. Replacement can be carried out by replacing the pre-processing mold and the post-processing mold, or by replacing the pre-mold block and the post-mold block, and the parameters and tools for the CNC equipment to process batch non-circular thread parts are unified, so that the processing quality and dimensions of batch non-circular thread parts can be unified, which is particularly beneficial to the processing of batch non-circular thread parts. Description of the Drawings

[0028] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0029] Figure 1 is the first three-dimensional structural schematic diagram of a processing mold for a non-circular threaded part provided by an embodiment of the present application; Figure 2 is the second three-dimensional structural schematic diagram of a processing mold for a non-circular threaded part provided by an embodiment of the present application; Figure 3 is the structural decomposition schematic diagram of a processing mold for a non-circular threaded part provided by an embodiment of the present application; Figure 4 is the three-dimensional structural schematic diagram of a pre-processing mold and a post-processing mold provided by an embodiment of the present application; Figure 5 is the schematic diagram of a non-circular threaded part provided by an embodiment of the present application; Figure 6 is the flow schematic diagram of a processing method for a non-circular threaded part provided by an embodiment of the present application.

[0030] Reference numerals: 11 - positioning fixture; 111 - fixture base; 112 - fixture main body; 113 - first installation position; 114 - second installation position; 12 - pre-processing mold; 121 - pre-mold insert; 122 - pre-mold insert block; 13 - post-processing mold; 131 - post-mold insert; 132 - post-mold insert block. Detailed implementation manners

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. The components of the embodiments of the present application usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application to be protected, but only represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0032] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0033] Moreover, in addition to being used to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0034] In addition, the terms "install", "set", "provided with", "connect", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or a point connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In addition, terms such as "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0036] Currently, the forming of non-circular thread parts usually adopts the EDM processing method. However, the processing efficiency of this processing method is relatively low, and the qualified rate of the processed non-circular thread parts is also relatively low. The surface of the processed non-circular thread parts will also be relatively rough, making it difficult to meet the requirements of high-standard non-circular thread parts. At the same time, for the processing of batch non-circular thread parts, it is easy to have the situation that the processing quality and dimensions of the batch non-circular thread parts are not uniform.

[0037] Existing CNC equipment can achieve high-precision processing of parts. However, there is currently no tool that can be used in conjunction with CNC equipment for processing non-circular thread parts, especially for the processing of batch non-circular thread parts.

[0038] In view of the problems in the above-mentioned prior art, the embodiments of the present application provide a processing mold and a processing method for non-circular thread parts, which can be used in conjunction with CNC equipment. By using the CNC equipment to process the threads of non-circular thread parts, the processing efficiency and quality of non-circular thread parts can be improved, the qualified rate of processed parts can be increased, and it is applicable to the batch processing of non-circular thread parts, enabling the processing quality and dimensions of batch non-circular thread parts to be unified.

[0039] Embodiment 1 Refer to Figures 1 to 5 , a processing mold for non-circular thread parts according to an embodiment of the present application includes: A positioning fixture 11, on which a first installation position 113 and a second installation position 114 are provided; A pre-molding die 12, which is detachably arranged at the first installation position 113 of the positioning fixture 11. The pre-molding die 12 includes a pre-molding insert 121 and a pre-molding block 122, and the pre-molding block 122 is detachably arranged on the pre-molding insert 121; A post-molding die 13, which is detachably arranged at the second installation position 114 of the positioning fixture 11. The post-molding die 13 includes a post-molding insert 131 and a post-molding block 132, and the post-molding block 132 is detachably arranged on the post-molding insert 131; The pre-molding block 122 and the post-molding block 132 can be combined and molded into a non-circular thread part after processing.

[0040] In this embodiment, for non-circular thread parts, refer to Figure 5 , Figure 5 which gives an exemplary non-circular thread part; it can be understood that the non-circular thread part shown in Figure 5 is only one structural form of non-circular thread parts, and non-circular thread parts can also have other structures.

[0041] In this embodiment, the positioning fixture 11 is used for the installation and fixation of the pre-molding die 12 and the post-molding die 13; when the processing mold for non-circular thread parts is used for thread processing, the processing mold for non-circular thread parts is used in an assembled manner; when thread processing is performed, the threads are processed on the pre-molding block 122 and the post-molding block 132, and the pre-molding block 122 and the post-molding block 132 can be combined and molded into a non-circular thread part after processing.

[0042] A processing mold for a non-circular thread part according to an embodiment of the present application can be used in conjunction with a CNC device to process the thread of the non-circular thread part through the CNC device. During processing, the front mold insert 122 is fixed firmly on the front mold insert 121, the rear mold insert 132 is fixed firmly on the rear mold insert 131, and the processing front mold 12 is fixed firmly at the first installation position 113 of the positioning fixture 11, and the processing rear mold 13 is fixed firmly at the second installation position 114 of the positioning fixture 11. Then, the assembled processing mold for the non-circular thread part is fixed firmly at the processing position of the CNC device, and the CNC device is used to process the threads on the front mold insert 122 and the rear mold insert 132 respectively. After the front mold insert 122 and the rear mold insert 132 are processed, they can be formed into a non-circular thread part through mold closing. Since the thread of the non-circular thread part is processed by the CNC device, the thread of the non-circular thread part can be processed more precisely, the processing efficiency and processing quality of the non-circular thread part can be improved, and the qualified rate of the processed parts can be increased. Moreover, the processing front mold 12 and the positioning fixture 11, the front mold insert 121 and the front mold insert 122, the processing rear mold 13 and the positioning fixture 11, and the rear mold insert 131 and the rear mold insert 132 are all arranged in a detachable manner, so that a processing mold for a non-circular thread part of the present application can be applicable to the processing of a batch of non-circular thread parts. When processing the threads of a batch of non-circular thread parts, replacement can be carried out by replacing the processing front mold 12 and the processing rear mold 13, or by replacing the front mold insert 122 and the rear mold insert 132, and the parameters and tools for the CNC device to process a batch of non-circular thread parts are unified, so that the processing quality and dimensions of a batch of non-circular thread parts can be unified, which is particularly beneficial to the processing of a batch of non-circular thread parts.

[0043] In this embodiment, the positioning fixture 11 includes a fixture base 111 and a fixture body 112. The fixture body 112 is detachably arranged on the fixture base 111, and the first installation position 113 and the second installation position 114 are arranged on the fixture body 112.

[0044] In the above structure, the fixture body 112 of the positioning fixture 11 is detachably arranged on the fixture base 111, which can facilitate the installation and fixation of the front mold insert 121 and the rear mold insert 131 on the fixture body 112, and further improve the processing efficiency of a batch of non-circular thread parts.

[0045] It should be noted that in other embodiments, the positioning fixture 11 can also adopt an integrated structure, that is, the positioning fixture 11 can be used directly as a whole positioning fixture 11 without the fixture base 111.

[0046] Preferably, the fixture body 112 is detachably arranged on the fixture base 111 through fastening bolts.

[0047] The jig body 112 is detachably mounted on the jig base 111 by fastening bolts, so that the jig body 112 can be more firmly fixed on the jig base 111, thereby avoiding displacement of the jig body 112 as much as possible, thereby effectively ensuring the processing quality and processing effect of non-circular threaded parts.

[0048] Alternatively, in other embodiments, the fixture body 112 and the fixture base 111 may also be connected by a detachable structure of a snap-fit connection.

[0049] Embodiment 2 See also Figures 1 to 5 On the basis of the above-mentioned embodiment 1, the difference between this embodiment and embodiment 1 is that in this embodiment, a processing mold for a non-full-circle threaded part is provided, and 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.

[0050] Specifically, two positioning grooves are arranged in parallel on the positioning jig 11, and the sizes of the two positioning grooves are adapted to the front mold 12 and the rear mold 13; in this embodiment, the positioning groove corresponding to the first mounting position 113 of the positioning jig 11 adopts a shallow groove structure, and the positioning groove corresponding to the second mounting position 114 of the positioning jig 11 can adopt a deep groove or a through groove structure.

[0051] In the above structure, the first mounting position 113 and the second mounting position 114 of the positioning fixture 11 adopt a positioning groove structure, which can facilitate the installation and fixation of the front processing mold 12 and the rear processing mold 13, and can play a role in limiting and accurately positioning the front processing mold 12 and the rear processing mold 13, thereby better ensuring the processing quality and processing effect of non-circular threaded parts.

[0052] It should be noted that, in other embodiments, the first mounting position 113 and the second mounting position 114 of the positioning fixture 11 may also be the first mounting area and the second mounting area on the upper surface of the positioning fixture 11, and the sizes of the first mounting area and the second mounting area are adapted to the pre-processing mold 12 and the post-processing mold 13; 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 first clamping structure and the second clamping structure can be set on the positioning fixture 11, and 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.

[0053] Embodiment 3 See also Figures 1 to 5, based on the above-mentioned First Embodiment or Second Embodiment, the difference between this embodiment and the First Embodiment or Second Embodiment lies in that for a processing mold of a non-circular thread part in this embodiment, the front mold insert 121 is arranged at the first installation position 113 of the positioning fixture 11 through fastening bolts, and the rear mold insert 131 is arranged at the second installation position 114 of the positioning fixture 11 through fastening bolts.

[0054] In this embodiment, based on the processing mold of a non-circular thread part in the Second Embodiment, the above structure of this embodiment is introduced exemplarily. On the basis of the Second Embodiment, the positioning groove corresponding to the first installation position 113 of the fixture body 112 adopts a shallow groove structure, and the positioning groove corresponding to the second installation position 114 of the fixture body 112 adopts a through groove structure. An installation recess can be arranged at the bottom of the fixture body 112 for arranging the front mold insert 121 on the shallow groove corresponding to the first installation position 113 of the fixture body 112 through fastening bolts. The rear mold insert 131 penetrates into the through groove corresponding to the second installation position 114 of the fixture body 112 and is arranged on the fixture base 111 through fastening bolts.

[0055] In the above structure, the installation and fixation method using fastening bolts can make the front mold insert 121 and the rear mold insert 131 be fixed on the positioning fixture 11 more firmly, and can effectively ensure the processing quality and processing effect of the non-circular thread part.

[0056] Fourth Embodiment See Figures 1 to 6 , this application embodiment provides a processing method for a non-circular thread part, which can apply the processing mold of the non-circular thread part in any one of the above-mentioned First Embodiment to Third Embodiment. The processing method includes: S110, arranging the front mold block 122 on the front mold insert 121, and arranging the rear mold block 132 on the rear mold insert 131; S120, arranging the processing front mold 12 at the first installation position 113 of the positioning fixture 11, and arranging the processing rear mold 13 at the second installation position 114 of the positioning fixture 11; S130, arranging the assembled processing mold of the non-circular thread part on the CNC equipment, and using the CNC equipment to process threads on the front mold block 122 and the rear mold block 132 respectively; S140, combining the processed front mold block 122 and rear mold block 132 to form a non-circular thread part.

[0057] In the above processing method, the processing mold for non-circular thread parts is used in conjunction with a CNC device. By using the CNC device to process the threads of non-circular thread parts, the threads of non-circular thread parts can be processed more precisely, the processing efficiency and quality of non-circular thread parts can be improved, and the qualification rate of processed parts can be increased. Moreover, it can be used for the batch processing of non-circular thread parts. By replacing the front processing mold 12 and the rear processing mold 13, or replacing the front mold insert 122 and the rear mold insert 132, and unifying the parameters and tools for the CNC device to process batch non-circular thread parts, the processing quality and dimensions of batch non-circular thread parts can be unified, which is particularly beneficial to the batch processing of non-circular thread parts.

[0058] Example Five See Figures 1 to 6 , based on the above Example Four, the difference between this example and Example Four is that in a processing method for non-circular thread parts in this example, the CNC device is a five-axis CNC device.

[0059] The CNC device adopts a five-axis CNC device, which has a higher rotation speed, and its processing spindle has a steering function. The swing angle of the processing spindle can be adjusted to improve the processing precision and quality of the threads of non-circular thread parts.

[0060] Preferably, when the five-axis CNC device processes threads on the front mold insert 122 and the rear mold insert 132 respectively, the swing angle of the processing spindle of the five-axis CNC device is 35° - 40°.

[0061] In the above processing method, when the swing angle of the processing spindle of the five-axis CNC device is 35° - 40°, the processing quality and effect of the five-axis CNC device for processing threads on the front mold insert 122 and the rear mold insert 132 can be optimized.

[0062] Example Six See Figures 1 to 6 , based on the above Example Four or Example Five, the difference between this example and Example Four or Example Five is that in a processing method for non-circular thread parts in this example, when the CNC device processes threads on the front mold insert 122 and the rear mold insert 132 respectively, it first uses a first tool to process the threads and then uses a second tool to process the threads; The angle between the machining inclined plane of the first tool and its axis is 14° - 16°, and the angle between the machining inclined plane of the second tool and its axis is 8° - 9°.

[0063] Preferably, there can be two sets of the first tool and the second tool, which are respectively used in conjunction with the front mold insert 122 and the rear mold insert 132.

[0064] Understandably, when the first tool and the second tool are in use, the first tool and the second tool are arranged on the machining spindle of the CNC device for use. Specifically, during use, they can be replaced and used on the machining spindle of the CNC device according to the order of use.

[0065] Preferably, the angle between the machining inclined plane of the first tool and its axis is 15°, and the angle between the machining inclined plane of the second tool and its axis is 8.7°.

[0066] In the above machining method, first, the first tool is used for thread machining, and then the second tool is used for thread machining. Moreover, since the angle between the machining inclined plane of the second tool and its axis is smaller than that of the first tool, the threads of the front mold insert 122 and the rear mold insert 132 can be machined for the second time. And the machining process transitions from rough to fine, which can significantly improve the machining precision and quality of the threads of non-circular thread parts.

[0067] Preferably, the first tool includes multiple sub-tools with different diameters; when using the first tool to perform thread machining on the front mold insert 122 and the rear mold insert 132 respectively, the sub-tools with diameters decreasing from large to small are sequentially used for thread machining.

[0068] Exemplarily, the multiple sub-tools of the first tool with different diameters can be sub-tools with diameters of 4mm, 3mm, and 1mm, and the second tool can be a tool with a diameter of 0.6mm; when using the tools with diameters of 4mm, 3mm, 1mm, and 0.6mm in sequence for thread machining, first, the tool with a diameter of 4mm can be used for rough machining with a unilateral stock allowance of 0.1mm, then the tool with a diameter of 3mm can be used for semi-rough machining with a unilateral stock allowance of 0.02mm, then the tool with a diameter of 1mm can be used for semi-finishing machining with a unilateral stock allowance of 0.005mm, and finally the tool with a diameter of 0.6mm can be used for fine finishing with 0 tolerance.

[0069] In the above machining method, when using the first tool to perform thread machining on the front mold insert 122 and the rear mold insert 132 respectively, the sub-tools with diameters decreasing from large to small are also sequentially used for multiple thread machinings, which can significantly improve the machining precision and quality of the threads of non-circular thread parts.

[0070] In all the above embodiments, "large", "small" are relative, "many", "few" are relative, "up", "down" are relative. For the expression methods of such relative terms, the embodiments of the present application will not elaborate further.

[0071] It should be understood that the expressions such as "in one embodiment", "in this embodiment", "in an embodiment of the present application", or "as an alternative embodiment" mentioned throughout the specification mean that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the expressions "in one embodiment", "in this embodiment", "in an embodiment of the present application", or "as an alternative embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all alternative embodiments, and the actions and modules involved are not necessarily essential to the present application.

[0072] In various embodiments of the present application, it should be understood that the magnitude of the sequence numbers of the above processes does not necessarily mean the inevitable sequence of execution. The execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0073] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A processing method for a non-circular thread part, characterized in that, A processing die for non-circular thread parts is applied. The processing die for non-circular thread parts includes: A positioning fixture (11), on which a first installation position (113) and a second installation position (114) are provided; A pre-processing front die (12), which is detachably arranged at the first installation position (113) of the positioning fixture (11). The pre-processing front die (12) includes a front die insert (121) and a front die block (122), and the front die block (122) is detachably arranged on the front die insert (121); A post-processing rear die (13), which is detachably arranged at the second installation position (114) of the positioning fixture (11). The post-processing rear die (13) includes a rear die insert (131) and a rear die block (132), and the rear die block (132) is detachably arranged on the rear die insert (131); After the front die block (122) and the rear die block (132) are processed, they can be closed to form a non-circular thread part; The processing method includes: Arranging the front die block (122) on the front die insert (121), and arranging the rear die block (132) on the rear die insert (131); Arranging the pre-processing front die (12) at the first installation position (113) of the positioning fixture (11), and arranging the post-processing rear die (13) at the second installation position (114) of the positioning fixture (11); Arranging the assembled processing die for non-circular thread parts on a CNC device, and using the CNC device to process threads on the front die block (122) and the rear die block (132) respectively; Closing and forming the processed front die block (122) and rear die block (132) into a non-circular thread part; When the CNC device processes threads on the front die block (122) and the rear die block (132) respectively, a first tool is first used for thread processing, and then a second tool is used for thread processing; The angle between the processing inclined plane of the first tool and its axis is 14° - 16°, and the angle between the processing inclined plane of the second tool and its axis is 8° - 9°.

2. The processing method of the non-circular thread part according to claim 1, characterized in that, The CNC device is a five-axis CNC device.

3. The processing method of the non-circular thread part according to claim 2, characterized in that, When the five-axis CNC device processes threads on the front die block (122) and the rear die block (132) respectively, the swing angle of the processing spindle of the five-axis CNC device is 35° - 40°.

4. The machining method of the non-circular thread part according to claim 1, characterized in that, The first tool includes multiple sub-tools with different diameters; When using the first tool to process threads on the front die block (122) and the rear die block (132) respectively, the sub-tools with diameters from large to small are sequentially used for thread processing.

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

6. The processing method of the non-circular thread part according to claim 1 or 5, characterized in that, The front die insert (121) is arranged at the first installation position (113) of the positioning fixture (11) through fastening bolts, and the rear die insert (131) is arranged at the second installation position (114) of the positioning fixture (11) through fastening bolts.

7. The processing method of the non-circular thread part according to claim 1, characterized in that, 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).

8. The machining method of the non-circular thread part according to claim 7, characterized in that, The fixture body (112) is detachably disposed on the fixture base (111) through fastening bolts.

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