A multi-process milling device

Abstract

The utility model relates to mechanical processing technical field, concretely relates to a multi -process milling device. Multi -process milling device, it includes: locating plate subassembly, multiple locating surfaces, locking assembly and multiple alternative use's station surface are established on it, locking assembly is used for with different station surface cooperation to fix the rotation body to be processed on locating plate subassembly according to corresponding processing posture, clamp subassembly is used for with the different locating surface clamping cooperation of locating plate subassembly, to keep the different processing parts of rotation body to be processed in processing area. In the embodiment of the application, the complex rotary body curved surface clamping is converted into the clamping of the milling device, which simplifies the difficulty of positioning and clamping between stations, avoids quality problems caused by uneven operator clamping skills, saves a lot of time for arranging clamps and clamps between stations, improves the positional accuracy between each processing surface of the part, and optimizes the processing technology to further improve the processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a multi-process milling device. Background Technology

[0002] In machining, the machining of the end faces of parts is often completed by turning. In order to maintain the stability of the workpiece during the cutting process, a fixture is often used for fixing. Especially for irregularly shaped parts, positioning fixtures are essential devices. In the existing technology, the common fixtures use positioning mechanisms and clamping mechanisms to fix the workpiece. For workpieces that need to be turned at both ends, after the machining of one end is completed, the workpiece needs to be rotated 180 degrees and repositioned and locked to complete the machining of the other end of the workpiece.

[0003] In related technologies, irregularly shaped parts requiring multi-faceted machining (such as rotating bodies) are generally machined on CNC milling machines, using fixtures such as vises, chucks, and pressure plates in conjunction with positioning blocks for clamping and positioning. However, when machining different parts, it is necessary to adjust the positioning elements, perform multiple clamping operations, and set the machining coordinate system, resulting in a long machining preparation cycle and low machining efficiency. Utility Model Content

[0004] In related technologies, for irregularly shaped parts that require multi-faceted machining, the positioning elements need to be adjusted and clamped multiple times, and the machining coordinate system needs to be set during machining. This results in a long machining preparation cycle and low machining efficiency.

[0005] In a first aspect, embodiments of this application provide a multi-process milling apparatus, comprising:

[0006] The positioning plate assembly has multiple positioning surfaces, a locking component, and multiple selectable workstation surfaces. The locking component is used to cooperate with different workstation surfaces to fix the rotating body to be processed on the positioning plate assembly according to the corresponding processing posture.

[0007] A clamping assembly for clamping with different positioning surfaces of the positioning plate assembly to hold different machining parts of the rotating body to be machined in the machining area.

[0008] In conjunction with the first aspect, in one embodiment, the positioning plate assembly includes: a base plate, a portion of its top surface forming a second work surface, and another portion protruding to form a first work surface. The first work surface is used to cooperate with the locking assembly to fix the rotating body to be processed in a first processing posture on the positioning plate assembly. The second work surface is used to cooperate with the locking assembly to fix the rotating body to be processed in a second processing posture on the positioning plate assembly.

[0009] When the rotating body to be processed is in the first processing posture, the parts to be processed of the rotating body include: the end face of the threaded hole, the cylinder, the end face, the chamfer, the elongated hole and the small hole, the small groove and the large groove;

[0010] When the rotating body to be processed is in the second processing posture, the parts to be processed of the rotating body include: threaded hole, end face, and cylinder.

[0011] In conjunction with the first aspect, in one embodiment, a positioning hole is provided on the top surface of the base plate, and the center of the positioning hole coincides with the origin of the machining coordinate system of the rotating body to be processed in the first machining posture or the second machining posture.

[0012] In conjunction with the first aspect, in one embodiment, the sidewall of the positioning hole is provided with an adjusting screw.

[0013] In conjunction with the first aspect, in one embodiment, the locking assembly includes:

[0014] A first tension mandrel is disposed on the first work station surface, and the first tension mandrel is used to pass through the threaded hole of the rotating body to be processed;

[0015] The second tension mandrel is disposed in the positioning hole and is used to pass through the elongated hole of the rotating body to be processed.

[0016] In conjunction with the first aspect, in one embodiment, the locking assembly further includes: a clamping and positioning device, which is detachably mounted on the second work surface, the clamping and positioning device being used for locking with the small hole of the rotating body to be processed.

[0017] In conjunction with the first aspect, in one embodiment, the clamping and positioning device includes:

[0018] A positioning pin is inserted into the positioning plate assembly;

[0019] A clamping screw, used to clamp the rotating body to be processed.

[0020] In conjunction with the first aspect, in one embodiment, the base plate has a first positioning surface, a second positioning surface, a third positioning surface, and a fourth positioning surface on its side, and a fifth positioning surface on its bottom surface.

[0021] In conjunction with the first aspect, in one embodiment, the clamp assembly includes:

[0022] A vise platform, used to abut against the second or fifth positioning surface to clamp the base plate;

[0023] A limiting block is assembled on the vise platform. The limiting block is used to abut against any one of the first positioning surface, the third positioning surface, and the fourth positioning surface to cooperate with the vise platform to fix the positioning plate assembly.

[0024] In conjunction with the first aspect, in one embodiment, the surface of the positioning plate assembly is marked with multiple workstation location symbols.

[0025] The beneficial effects of the technical solutions provided in this application include at least the following:

[0026] This application sets multiple workstation surfaces and positioning surfaces on a positioning plate. The positioning plate can first be integrated with the rotating body to be processed using different workstation surfaces, thereby changing the processing posture of the rotating body by switching workstation surfaces. Then, a fixture is used to clamp the preset positioning surfaces on the positioning plate to fix the rotating body to be processed, which is integrated with the positioning plate, in the processing area. In the embodiments of this application, the cumbersome clamping methods of each workstation are integrated into a milling device, transforming the complex clamping of the rotating body's curved surface into the clamping of the milling device. This simplifies the difficulty of positioning and clamping between each workstation, avoids quality problems caused by inconsistent clamping skills of operators, saves a lot of time in arranging fixtures and fixtures between each workstation, eliminates the time of repeatedly setting tools and establishing the processing coordinate system, improves the positional accuracy between the processing surfaces of the part, and optimizes the processing technology to further improve processing efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the milling device in the embodiments of this application;

[0029] Figure 2 This is a schematic diagram of the clamping and positioning device in the embodiments of this application;

[0030] Figure 3 This is a schematic diagram of the milling device in the first station according to an embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the milling device in the second station in an embodiment of this application;

[0032] Figure 5 This is a schematic diagram of the milling device in the third station in an embodiment of this application;

[0033] Figure 6 This is a schematic diagram of the milling device in the fourth station of this application embodiment.

[0034] In the diagram: 1. Fixture assembly; 11. Vise platform; 111. Dead vise jaws; 12. Limiting block; 3. Positioning plate assembly; 31. Base plate; 311. First positioning surface; 312. Second positioning surface; 313. Third positioning surface; 314. Fourth positioning surface; 315. Fifth positioning surface; 32. Boss; 33. First work station surface; 34. Second work station surface; 35. Positioning hole; 351. Adjusting screw; 4. Rotary body to be processed; 41. Small hole; 42. Threaded hole; 43. Cylinder; 44. Long hole; 45. Small groove; 46. Large groove; 5. First tension mandrel; 6. Second tension mandrel; 7. Clamping and positioning device; 71. Positioning pin; 72. Clamping screw; 73. Opening washer. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0036] In related technologies, for irregularly shaped parts (such as rotating bodies) that require multi-faceted machining, it is necessary to adjust the positioning elements, perform multiple clamping operations, and set the machining coordinate system during machining, resulting in a long machining preparation cycle and low machining efficiency.

[0037] Firstly, such as Figure 1 As shown, this application provides a multi-process milling apparatus, which includes: a positioning plate assembly 3 and a fixture assembly 1; wherein,

[0038] The positioning plate assembly 3 has multiple positioning surfaces, locking components, and multiple selectable workstation surfaces. The locking components are used to cooperate with different workstation surfaces to fix the rotating body 4 to be processed on the positioning plate assembly 3 according to the corresponding processing posture. The clamping assembly 1 is used to clamp and cooperate with different positioning surfaces of the positioning plate assembly 3 to keep different processing parts of the rotating body 4 to be processed in the processing area.

[0039] It is understandable that the positioning plate assembly 3 can be integrated with the rotating body 4 to be processed in different postures through different workstation surfaces. At the same time, after the positioning plate assembly 3 and the rotating body 4 to be processed are integrated, the fixture assembly 1 can cooperate with different positioning surfaces on the positioning plate assembly 3 to fix different processing parts of the rotating body 4 to be processed within the processing area.

[0040] In some specific embodiments, the positioning plate assembly 3 includes: a base plate 31, a portion of its top surface forming a second work surface 34, and another portion protruding to form a boss 32. The top surface of the boss 32 is provided with a first work surface 33. The first work surface 33 is used to cooperate with the locking assembly to fix the rotating body 4 to be processed in a first processing posture on the positioning plate assembly 3. The second work surface 34 is used to cooperate with the locking assembly to fix the rotating body 4 to be processed in a second processing posture on the positioning plate assembly 3.

[0041] When the rotating body 4 to be processed is in the first processing posture, the parts to be processed of the rotating body 4 to be processed include: the end face of the threaded hole 42, the cylinder 43, the end face, the chamfer, the elongated hole 44, the small hole 41, the small groove 45, and the large groove 46.

[0042] When the rotating body 4 to be processed is in the second processing posture, the parts to be processed of the rotating body 4 include: threaded hole 42, end face, and cylinder 43.

[0043] The aforementioned switching of the machining posture of the rotating body 4 to be machined is to change the relative position of the rotating body 4 to be machined and the positioning plate assembly 3. After the rotating body 4 to be machined is fixed in different machining postures, the positioning surface is clamped by the fixture assembly 1. By switching the positioning surface that cooperates with the fixture assembly 1, the aforementioned parts to be machined can enter the milling machining area respectively.

[0044] In some optional embodiments, the top surface of the base plate 31 is provided with a positioning hole 35, and the center of the positioning hole 35 coincides with the origin of the machining coordinate system of the rotating body 4 to be processed in the first machining posture or the second machining posture.

[0045] It is worth noting that, in order to save the time of repeatedly setting the machining coordinate system when switching between different machining postures, this application ensures that the center of the positioning hole 35 on the base plate 31 coincides with the machining coordinate system of the rotating body 4 under both machining postures. That is, regardless of which machining posture the rotating body 4 is switched to, its machining coordinate system does not need to be changed or transformed.

[0046] Furthermore, the side wall of the positioning hole 35 is provided with an adjusting screw 351.

[0047] It is worth noting that since the rotating body 4 to be processed is initially a blank product, after part of it enters the positioning hole 35, it needs to be finely adjusted with adjusting screw 351 to complete the coarse positioning.

[0048] In some alternative implementations, such as Figure 1 As shown, the locking assembly includes: a first tension spindle 5 and a second tension spindle 6; wherein,

[0049] The first tension mandrel 5 is disposed on the first work station surface 33 and is used to pass through the threaded hole 42 of the rotating body 4 to be processed; the second tension mandrel 6 is disposed in the positioning hole 35 and is used to pass through the elongated hole 44 of the rotating body 4 to be processed.

[0050] It is worth noting that the boss 32 is used to support the rotating body 4 to be processed. The gap between the bottom of the boss 32 and the top surface of the second tension mandrel 6 is more than 4mm, so as to form a clearance space in the first processing posture, so as to avoid the second tension mandrel 6 when drilling and reaming the long hole 44 of the rotating body 4 to be processed.

[0051] Furthermore, the locking assembly also includes a clamping and positioning device 7, which is assembled on the second work station surface 34, and the clamping and positioning device 7 is used to lock into the small hole 41 of the rotating body 4 to be processed.

[0052] It is worth noting that, such as Figure 4 As shown, the clamping and positioning device 7 and the second tension mandrel 6 are used to lock and fix the rotating body 4 to be processed in the second processing posture in cooperation with the second work station surface 34. The first tension mandrel 5 is used to cooperate with the first work station surface 33 to lock the rotating body 4 to be processed in the first processing posture.

[0053] Specifically, such as Figure 2 As shown, the clamping and positioning device 7 includes: a positioning pin 71 and a clamping screw 72; wherein,

[0054] A positioning pin 71 is inserted into the positioning plate assembly 3; a clamping screw 72 is used to clamp the rotating body 4 to be processed.

[0055] Furthermore, the second work station surface 34 of the base plate 31 is provided with mounting holes for detachably mounting the clamping and positioning device 7.

[0056] In some specific embodiments, the clamp assembly 1 includes: a vise platform 11 and a limiting block 12; wherein,

[0057] A vise platform 11 is used to abut against the second positioning surface 312 or the fifth positioning surface 315 to clamp the base plate 31; a limiting block 12 is assembled on the vise platform 11, and the limiting block 12 is used to abut against any one of the first positioning surface 311, the third positioning surface 313 and the fourth positioning surface 314 to cooperate with the vise platform 11 to fix the positioning plate assembly 3.

[0058] In conjunction with the preferred embodiments described above, in some specific embodiments, such as Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the base plate 31 has a first positioning surface 311, a second positioning surface 312, a third positioning surface 313, and a fourth positioning surface 314 on its side, and a fifth positioning surface 315 on its bottom surface.

[0059] It is worth noting that the second positioning surface 312 and the fifth positioning surface 315 are used to engage with the dead jaw 111 of the vise platform 11 for clamping. The first positioning surface 311 and the fourth positioning surface 314 are used to engage with the limit block 12 for limiting.

[0060] Furthermore, the center distance from the first positioning surface 311 to the center of the positioning hole 35 is the same as the center distance from the fourth positioning surface 314 to the center of symmetry of the groove 45 (e.g., Figure 3 Figure 4 (marked with X), and the distance from the center of the second positioning surface 312 to the positioning hole 35 is the same as the distance from the fifth positioning surface 315 to the side wall of the large groove 46, such as Figure 3 Figure 5 The Y-axis is marked in the middle to achieve coordinate uniformity and avoid repeatedly setting the machining coordinate system after the workstation is changed.

[0061] It is understandable that, in order to ensure that the origin of the machining coordinate system of the rotating body 4 to be processed coincides with the center of the positioning hole 35 in both the first and second machining postures, the above-mentioned X and Y distances are limited to reduce the process of changing the positioning coordinate system when switching between different workstations.

[0062] In some preferred embodiments, the surface of the positioning plate assembly 3 is marked with multiple error-proofing symbols for different workstation positions. The symbols are used to indicate how to move the positioning plate assembly 3 so that its corresponding positioning surface is clamped with the limiting block 12 and the vise platform 11 respectively at different processing workstations.

[0063] It should be noted that the machining station is not the machining posture mentioned above. The machining station is used to indicate the engagement between the positioning surface of the positioning plate assembly 3 and the fixture assembly 1.

[0064] Specifically, the processing stations include:

[0065] First station: The boss 32 is designed with a first tension mandrel 5, which, together with the positioning hole 35 and the adjusting screw 351, forms a rough positioning and locks the rotating body 4 to be processed. The second positioning surface 312 contacts the dead vault jaw 111, and the first positioning surface 311 contacts the limit block 12 to form the first station.

[0066] Second station: A third positioning surface 313 is designed on the base plate 31, parallel to the bottom surface of the groove 45 of the rotating body 4 to be processed in the clamped state. A fourth positioning surface 314 is designed, perpendicular to the third positioning surface 313. The positioning plate is operated so that the fifth positioning surface 315 contacts the dead vise jaw 111, and the fourth positioning surface 314 contacts the limit block 12. The locking vise platform 11 completes the clamping of the milling device and forms the second station.

[0067] Third station: The fifth positioning surface 315 contacts the dead vault jaw 111, and the first positioning surface 311 contacts the limiting block 12 to complete the clamping of the milling device, forming the third station.

[0068] Fourth station: According to the positioning surface mating relationship of the fourth station, the positioning plate assembly 3 is installed in the fixture assembly 1. The clamping positioning device 7 is installed on the base plate 31. The clamping positioning device 7 includes a positioning pin 71, an open washer 73, and a clamping screw 72 with a nut diameter slightly smaller than that of the small hole 41. This allows for quick loading and unloading of the rotating body 4 to be processed with only minor adjustments to the clamping screw 72. A second tension mandrel 6 is designed in the positioning hole 35 to form a precise positioning and locking of the rotating body 4 to be processed, thus forming the fourth station.

[0069] In one specific embodiment of this application, the multi-process milling device can switch between multiple workstations to process different machining parts of the rotating body 4 to be processed. The specific machining includes:

[0070] Step S1: Processing at the first workstation.

[0071] Specifically, such as Figure 3 As shown, the milling device of this utility model is placed in the vise platform 11 according to the first station indication in the error prevention mark, that is, the second positioning surface 312 is in contact with the dead vise jaw 111, and the first positioning surface 311 is in contact with the limit block 12. The clamping of the milling device is completed by operating the vise platform 11 to lock. The center of the positioning hole 35 is set as the machining coordinate system using the machining equipment. The rotating body 4 to be processed is placed on the boss 32, the cylinder 43 is placed into the positioning hole 35, the fine adjustment screw 351 is used, the threaded hole 42 is placed into the first tension mandrel 5 and locked to complete the rough positioning and clamping. Then, the end face of the threaded hole 42 of the rotating body, the cylinder 43 and the end face and chamfer, the part of the outer shape located on the boss 32, the long hole 44 and the small hole 41 are machined.

[0072] Step S2: Processing at the second workstation.

[0073] Specifically, such as Figure 4As shown, the vise platform 11 is operated to release the vise, keeping the rotating body 4 to be processed in the clamped state. No disassembly is required. According to the second station instruction in the error prevention mark, the milling device is placed in the vise platform 11, that is, the fifth positioning surface 315 contacts the dead vise jaw 111, and the fourth positioning surface 314 contacts the limit block 12. The vise platform 11 is locked to complete the clamping of the milling device. At this time, the machining coordinate system is converted to the symmetrical center position of the groove 45. There is no need to reset the coordinate system, and the machining of the groove 45 can be completed directly.

[0074] Step S3: Processing at the third workstation.

[0075] Specifically, operate the vise platform 11 to loosen the vise, such as... Figure 5 As shown, keep the rotating body 4 to be processed in the clamped state without disassembly. According to the third station instruction in the error prevention mark, put the milling device into the vise platform 11, that is, the fifth positioning surface 315 contacts the dead vise jaw 111, and the first positioning surface 311 contacts the limit block 12 to complete the clamping of the milling device. At this time, the machining coordinate system is converted to the side wall position of the large groove 46. There is no need to reset the coordinate system, and the machining of the large groove 46 can be completed directly.

[0076] Step S4, fourth station processing.

[0077] Specifically, such as Figure 6 As shown, disassemble the rotating body 4 to be processed, loosen the vise, and place the milling device into the vise platform 11 according to the fourth station instruction in the error prevention label, which is the clamping method of the milling device in the first station. After the milling device is clamped, install the clamping and positioning device 7 into the base plate 31, and then put the long hole 44 of the rotating body 4 to be processed into the second tension mandrel 6, the small hole 41 into the positioning pin 71, and the open washer 73. Lock the second tension mandrel 6 and the clamping screw 72 to complete the fine positioning and clamping of the rotating body 4 to be processed. At this time, the machining coordinate system is converted to the center of the cylinder 43 again, which is the center of the positioning hole 35 of the machining coordinate system in the first station. There is no need to reset the coordinate system. Then process the threaded hole 42 and the end face, and the remaining part of the cylinder 43.

[0078] It is worth noting that during batch processing, the contents of the first, second, and third stations of the entire batch of rotary bodies can be processed in a unified manner first, and then the contents of the fourth station can be processed in a unified manner, so as to reduce the number of times the clamping and positioning device 7 is disassembled and assembled, and further improve the processing efficiency.

[0079] In summary, this utility model provides a milling device and method for multi-positioning and clamping irregularly shaped parts. By integrating multiple machining stations into a single fixture, it achieves machining of different parts of the part without disassembling the part, only by flipping the fixture. Simultaneously, it designs the positional relationships between the stations, eliminating the need to set the coordinate system for subsequent machining stations by setting it only once. This enables rapid conversion between different parts during machining, changing the traditional method of positioning and setting the machining coordinate system step by step when machining different parts. It effectively solves the problems of repeatedly setting the machining coordinate system and long clamping and positioning preparation time in existing methods. Furthermore, using the milling device of this application makes the conversion between different stations of the rotary body more convenient and faster. It integrates the cumbersome clamping methods of each station into a single milling device, transforms the complex clamping of the rotary body's curved surface into the clamping of the milling device, simplifies the difficulty of positioning and clamping between different stations, avoids quality problems caused by inconsistent clamping skills of operators, saves a lot of time on the arrangement of fixtures and fixtures between different stations, eliminates the time spent on repeatedly setting tools and establishing machining coordinate systems, improves the positional accuracy between different machining surfaces of the part, and optimizes the machining process to further improve machining efficiency.

[0080] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0081] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0082] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A multi-process milling device, characterized by, include: The positioning plate assembly (3) is provided with multiple positioning surfaces, locking components and multiple selectable work stations. The locking components are used to cooperate with different work stations to fix the rotating body (4) to be processed on the positioning plate assembly (3) according to the corresponding processing posture. A clamping assembly (1) is used to clamp and engage with different positioning surfaces of the positioning plate assembly (3) to hold different processing parts of the rotating body (4) to be processed in the processing area.

2. The multi-process milling apparatus of claim 1, wherein, The positioning plate assembly (3) includes: a base plate (31), a portion of its top surface forming a second work station surface (34), and another portion protruding to form a first work station surface (33). The first work station surface (33) is used to cooperate with the locking assembly to fix the rotating body (4) to be processed in a first processing posture on the positioning plate assembly (3). The second work station surface (34) is used to cooperate with the locking assembly to fix the rotating body (4) to be processed in a second processing posture on the positioning plate assembly (3). When the rotating body (4) to be processed is in the first processing posture, the parts to be processed of the rotating body (4) to be processed include: the end face of the threaded hole (42), the cylinder (43), the end face, the chamfer, the long hole (44) and the small hole (41), the small groove (45) and the large groove (46). When the rotating body (4) to be processed is in the second processing posture, the parts to be processed of the rotating body (4) include: threaded hole (42), end face, and cylinder (43).

3. The multi-pass milling apparatus of claim 2, wherein: The base plate (31) has a positioning hole (35) on its top surface, and the center of the positioning hole (35) coincides with the origin of the machining coordinate system of the rotating body (4) to be processed in the first machining posture or the second machining posture.

4. The multi-pass milling apparatus of claim 3, wherein: The side wall of the positioning hole (35) is provided with an adjusting screw (351).

5. The multi-process milling apparatus of claim 3, wherein, The locking assembly includes: The first tension mandrel (5) is disposed on the first work station surface (33) and is used to pass through the threaded hole (42) of the rotating body (4) to be processed; The second tension mandrel (6) is disposed in the positioning hole (35) and is used to pass through the elongated hole (44) of the rotating body (4) to be processed.

6. The multi-pass milling apparatus of claim 4, wherein, The locking assembly further includes a clamping and positioning device (7), which is detachably installed on the second work station surface (34). The clamping and positioning device (7) is used to lock and cooperate with the small hole (41) of the rotating body (4) to be processed.

7. The multi-pass milling apparatus of claim 6, wherein, The clamping and positioning device (7) includes: Positioning pin (71) is inserted into the positioning plate assembly (3); A clamping screw (72) is used to clamp the rotating body (4) to be processed.

8. The multi-pass milling apparatus of claim 2, wherein: The base plate (31) has a first positioning surface (311), a second positioning surface (312), a third positioning surface (313), and a fourth positioning surface (314) on its side, and a fifth positioning surface (315) on its bottom surface.

9. The multi-pass milling apparatus of claim 8, wherein, The fixture assembly (1) includes: A vise platform (11) is used to abut against the second positioning surface (312) or the fifth positioning surface (315) to clamp the base plate (31). A limiting block (12) is assembled on the vise platform (11). The limiting block (12) is used to abut against any one of the first positioning surface (311), the third positioning surface (313) and the fourth positioning surface (314) to cooperate with the vise platform (11) to fix the positioning plate assembly (3).

10. The multi-process milling apparatus of claim 1, wherein: The positioning plate assembly (3) has multiple workstation position markings on its surface.

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