Limiting structure of five-axis linkage swing head, five-axis linkage swing head and numerical control machine tool

Abstract

The utility model discloses a limiting structure of a five-axis linkage swing head, the five-axis linkage swing head and a numerical control machine tool, and relates to the technical field of five-axis linkage swing head equipment. The limiting structure comprises a first limiting part and a first clamping part which are matched with each other; the first limiting part is arranged outside the C-axis assembly, and a limiting space is formed on the first limiting part; the first clamping part is arranged outside the A-axis assembly and provided with a clamping end, and the clamping end is used for being matched with the limiting space to restrain the rotation angle of the C-axis assembly. The structure can effectively prevent the rotation of the C-axis direct-drive motor from exceeding the limit, and prevent the normal use of the five-axis linkage swing head from being influenced by the winding or damage of an electric wire.

Description

Technical Field

[0001] The present invention generally relates to the technical field of five-axis linkage swing head equipment, and in particular to a limit structure of a five-axis linkage swing head, a five-axis linkage swing head and a CNC machine tool. Background Art

[0002] In a machine tool using a five-axis linkage swing head T600 model, when the C-axis direct drive motor drives the wire through the C-axis rotation area, the rotation angle of the C-axis needs to be limited to prevent the wire from being entangled or damaged. The current rotation angle limit is generally based on the setting of the 0-point position of the swing head. Here, the "0-point setting" usually refers to determining the starting limit position of the C-axis rotation and the safe operation area of ​​the wire.

[0003] Because different manufacturers' controllers have different settings for 0-point differentiation control, it will cause drift in the 0-point differentiation control. For example, the existing manufacturer's controller is set to rotate 180 degrees from 0, but in actual use it turns to 270 degrees. Therefore, if the manufacturer's controller is set, it will cause over-limit rotation in actual use, thus breaking the line and affecting production efficiency. To this end, we propose a limit structure for the five-axis linkage swing head to solve the above problem. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a limiting structure of a five-axis linkage swing head, a five-axis linkage swing head and a CNC machine tool.

[0005] In a first aspect, the present application provides a limiting structure of a five-axis linkage swing head, which is applied to the five-axis linkage swing head, wherein the five-axis linkage swing head includes a C-axis component and an A-axis component; the limiting structure includes: a first limiting portion and a first clamping portion that cooperate with each other;

[0006] The first limiting portion is disposed outside the C-axis assembly and forms a limiting space thereon;

[0007] The first engaging portion is arranged outside the A-axis assembly and has an engaging end, and the engaging end is used to cooperate with the limiting space to restrict the rotation angle of the C-axis assembly.

[0008] According to the technical solution provided by the present application, the middle portion of the first limiting portion is a through hole in a ring shape;

[0009] The C-axis assembly is located in the through hole, and the first limiting portion and the C-axis assembly are fixedly connected via a connecting member.

[0010] According to the technical solution provided in this application, the first limiting portion includes two detachable first arc-shaped parts and a second arc-shaped part;

[0011] The bottom surfaces of the first arc-shaped member and the second arc-shaped member are respectively provided with a first limiting groove and a second limiting groove extending along the bending direction of the member body, and the groove openings of the two members are oriented in a direction parallel to the axis of the C-axis assembly.

[0012] According to the technical solution provided in the present application, when the first arc-shaped member and the second arc-shaped member are installed outside the C-axis assembly, the ends of the first limiting groove and the second limiting groove are correspondingly arranged to form a limiting groove together;

[0013] The limiting groove is in a spiral shape to form groove end points at both ends of the limiting groove, and the limiting groove is the limiting space.

[0014] According to the technical solution provided in the present application, the first arc-shaped member and the second arc-shaped member also have a positioning protrusion end and a positioning groove matched with the positioning protrusion end respectively; the positioning protrusion end and the positioning groove are used to assist the assembly of the first arc-shaped member and the second arc-shaped member.

[0015] According to the technical solution provided in this application, the first engaging portion includes:

[0016] A snap-fit ​​housing is arranged outside the A-axis assembly; the top of the snap-fit ​​housing has an opening; a snap-fit ​​block is movably arranged inside the snap-fit ​​housing;

[0017] When the engaging housing is driven by the C-axis assembly to rotate, the engaging block can rotate along the limiting groove. When the engaging block rotates to both ends of the limiting groove, the C-axis assembly stops rotating.

[0018] According to the technical solution provided in this application, the first engaging portion further includes:

[0019] A travel rod, the number of which is at least two; the two travel rods are arranged in parallel in the engaging housing and are located at the opening;

[0020] The engaging block is movably arranged on the two travel rods, and the travel rods are used to provide guidance for the engaging block.

[0021] According to the technical solution provided in the present application, the top of the engaging block further has an extension section, and the extension section extends in a direction perpendicular to the top surface of the engaging block; the extension section is located in the limiting groove, and the length of the cross section of the extension section along the first direction is matched with the depth of the limiting groove;

[0022] The first direction is a direction perpendicular to the top surface of the locking block; the extending section forms the locking end.

[0023] In the second aspect, the present application provides a five-axis linkage swing head, which is equipped with the above-mentioned limiting structure of the five-axis linkage swing head; the five-axis linkage swing head includes: a C-axis assembly and an A-axis assembly, the C-axis assembly is provided with a sliding flange for connecting to a machine tool, the first limiting portion is fixedly connected to the sliding flange; the first limiting portion is fixedly connected to the sliding flange; the first clamping portion is provided on the outside of the A-axis assembly.

[0024] In a third aspect, the present application provides a CNC machine tool, which is equipped with the above-mentioned five-axis linkage swing head.

[0025] In summary, the technical solution specifically discloses a limiting structure of a five-axis linkage swing head, a five-axis linkage swing head and a CNC machine tool. The limiting structure includes: a first limiting portion and a first clamping portion that cooperate with each other; the first limiting portion is arranged outside the C-axis assembly and a limited space is formed thereon; the first clamping portion is arranged outside the A-axis assembly and has a clamping end, which is used to cooperate with the limiting space to constrain the rotation angle of the A-axis assembly.

[0026] During the use of the five-axis linkage swing head, since different manufacturers' controllers have different settings for the zero-point differentiation control of the swing head, if you blindly follow the settings of the manufacturer's controller, it may cause over-limit rotation in actual use, thereby breaking the line. In this application, by respectively setting a first limit portion and a first clamping portion on the outside of the C-axis assembly and the A-axis assembly, the cooperation of the limit space and the clamping end in the first limit portion and the first clamping portion can effectively prevent the C-axis direct drive motor from rotating over-limit, prevent the wires from being entangled or damaged, and affect the normal use of the five-axis linkage swing head. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0028] Figure 1 It is a structural cross-sectional view of the limiting structure of the five-axis linkage swing head.

[0029] Figure 2 It is a structural schematic diagram of the limiting structure of the five-axis linkage swing head.

[0030] Figure 3 It is a structural schematic diagram of the first limiting part in the limiting structure of the five-axis linkage swing head.

[0031] Figure 4 This is a schematic diagram of the dispersed structure of the first limiting part in the limiting structure of the five-axis linkage swing head.

[0032] Figure 5 It is a structural schematic diagram of the first engaging part in the limiting structure of the five-axis linkage swing head.

[0033] Figure 6 It is a structural schematic diagram of a five-axis linkage swing head.

[0034] Numbers in the figure: 1, C-axis assembly; 11, slide flange; 2, A-axis assembly; 3, first limiting portion; 31, first arc-shaped member; 32, second arc-shaped member; 33, first limiting groove; 34, second limiting groove; 35, positioning protrusion end; 36, positioning groove; 4, first engaging portion; 41, engaging shell; 42, opening; 43, engaging block; 44, travel rod; 5, connecting member. DETAILED DESCRIPTION

[0035] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] Example 1

[0038] Please refer to Figure 1 and Figure 6 The structural cross-sectional view of the limiting structure of the five-axis linkage swing head provided in the present embodiment and the structural schematic view of the five-axis linkage swing head are shown, and the limiting structure comprises: a first limiting portion 3 and a first clamping portion 4 that cooperate with each other;

[0039] The first limiting portion 3 is disposed outside the C-axis assembly 1 and forms a limiting space thereon;

[0040] The first engaging portion 4 is disposed outside the A-axis assembly 2 and has an engaging end, which is used to cooperate with the limiting space to restrict the rotation angle of the C-axis assembly 1 .

[0041] First of all, the five-axis linkage swing head is one of the key components of the five-axis CNC machine tool, which enables the machine tool to perform complex five-axis linkage processing. This kind of swing head usually contains multiple rotation axes to provide greater processing freedom and flexibility. Specifically, the basic structure of the five-axis linkage swing head includes: spindle, A-axis and C-axis; among them, the A-axis is a rotation axis of the swing head (generally rotating around the X-axis), usually located on one side of the spindle, allowing the spindle to rotate in the horizontal plane, usually used for processing side or inclined surfaces; the C-axis is another rotation axis (generally rotating around the Z-axis), usually perpendicular to the A-axis, allowing the spindle to rotate in the vertical plane, usually used for processing top or bottom features.

[0042] In the T600 model machine tool using the five-axis linkage swing head, when the C-axis direct drive motor drives the wire through the C-axis rotation area, the rotation angle of the C-axis needs to be limited to avoid the wire from being entangled or damaged. When the swing head is working normally, the C-axis will rotate around the Z-axis of the machine tool, which is equivalent to rotating 180° forward and 180° reverse in the vertical direction. In this ideal state, the rotation of the swing head will not cause the wire to be entangled or damaged. However, due to the different settings of the 0-point differentiation control of the swing head by controllers of different manufacturers, it is very easy to cause the C-axis to rotate over the limit in actual use. For example, the existing manufacturer's controller is set to rotate 180 degrees from the 0 point, but in actual use, the device may rotate from the 0 point to the position of 270 degrees after the power is off. In this way, when the swing head rotates again, it will continue to rotate 180° according to the current 0-point position, and the C-axis will rotate over the limit, which will cause the wire to be torn off.

[0043] In view of this, the present application sets a limit structure on the five-axis linkage swing head to avoid the problem of over-limit rotation of the C-axis due to zero-point drift. The first limit part 3 is set on the outside of the C-axis assembly 1. In actual situations, the first limit part 3 can be set on the housing of the C-axis assembly 1 or fixed on the ram flange 11 outside the housing for connection with the machine tool. There is no special limitation on the specific details. The first clamping part 4 is set on the outside of the A-axis assembly 2 for cooperating with the first limit part 3. In actual situations, the first clamping part 34 can be set on the housing of the A-axis assembly 2.

[0044] Furthermore, a limiting space for constraining the rotation angle of the C-axis is formed on the first limiting portion 3, and the first engaging portion 4 has an engaging end extending into the limiting space. In the process of the C-axis driving the A-axis housing to rotate, the engaging end will rotate along the limiting space. When the engaging end enters the stop area in the limiting space, it indicates that the C-axis has also reached the maximum rotation angle range on the turn and cannot continue to rotate along the turn, thereby effectively preventing the C-axis from rotating beyond the limit.

[0045] In a preferred embodiment, see Figure 3 , the middle part of the first limiting part 3 is a through hole, which is in a ring shape;

[0046] The C-axis assembly 1 is located in the through hole, and the first limiting portion 3 and the C-axis assembly 1 are fixedly connected via a connecting member 5 .

[0047] The first limiting portion 3 is an annular ring, and its through hole is matched with the outer shell of the C-axis assembly 1, so that the first limiting portion 2 and the C-axis assembly 1 are detachably connected, which is convenient for the later maintenance of the swing head or the limiting structure itself.

[0048] In a preferred embodiment, see Figure 2 and Figure 4In order to further increase the installation convenience of the first limiting part 3 and the C-axis assembly 1, the first limiting part 3 includes two detachable first arc-shaped parts 31 and a second arc-shaped part 32;

[0049] A first limiting groove 33 and a second limiting groove 34 extending along the bending direction of the first arc-shaped member 31 and the second arc-shaped member 32 are respectively formed on their bottom surfaces, and the directions of the grooves of both are oriented in a direction parallel to the axis of the C-axis assembly 1 .

[0050] During the actual installation process, the first arc-shaped member 31 and the second arc-shaped member 32 can be assembled with the C-axis assembly 1 through the connecting member 5, respectively. At the same time, the first arc-shaped member 31 and the second arc-shaped member 32 are respectively provided with a first limiting groove 33 and a second limiting groove 34. The first limiting groove 33 and the second limiting groove 34 are both two arc-shaped grooves, and the two limiting grooves can cooperate with each other to form a limiting space.

[0051] It should be noted that, in the actual structural design, the first arc member 31 and the second arc member 32 as a whole include a lower arc plate matching the specifications of the C-axis assembly 1 and an extension plate arranged at the top of each lower arc plate; in fact, the lower arc plate is the part in contact with the C-axis assembly 1, and the extension plate extends in a direction perpendicular to the axis of the C-axis, the first limit groove 33 and the second limit groove 34 are specifically opened on the lower surface of the corresponding extension plate, and the first clamping portion 4 is also specifically matched with the extension plate.

[0052] In a preferred embodiment, see Figure 3 In order to ensure the precise control of the rotation angle of the C-axis assembly 1 and the ability to adapt to complex working conditions, when the first arc-shaped member 31 and the second arc-shaped member 32 are installed on the outside of the C-axis assembly 1, the ends of the first limit groove 33 and the second limit groove 34 are correspondingly arranged to form a limit groove together; the limit groove is spirally shaped to form groove end points at both ends of the limit groove, and the limit groove is the limit space.

[0053] The specific form of the limit groove can be found in Figure 3 or Figure 4 As shown, the limiting groove is spiral, which means that the limiting groove will have two coplanar but non-connected groove end points (that is, the two end points of the groove, see Figure 3 When the engaging end rotates to the end point of the groove, it is equivalent to the engaging end entering the stop area. The groove wall of the end point of the limit groove contacts and engages with the engaging end. The C-axis can no longer continue to rotate along the direction. Therefore, even if the swing head drifts due to different 0-point differentiation control, the C-axis will not continue to rotate and tear the wire under the restriction of the limit groove.

[0054] In a preferred embodiment, see Figure 4In order to ensure the convenience and efficiency of assembling the first arc-shaped member 31 and the second arc-shaped member 32, the first arc-shaped member 31 and the second arc-shaped member 32 also have a positioning protrusion end 35 and a positioning groove 36 matched with the positioning protrusion end 35 respectively; the positioning protrusion end 35 and the positioning groove 36 are used to assist in assembling the first arc-shaped member 31 and the second arc-shaped member 32.

[0055] The positioning protrusion end 35 is a pointed positioning protrusion set on the first arc-shaped member 31 or the second arc-shaped member 32, and the positioning groove 36 is a triangular groove set at the position corresponding to the first arc-shaped member 31 or the second arc-shaped member 32 and the positioning protrusion end 35. In this way, when the first arc-shaped member 31 and the second arc-shaped member 32 are assembled, the two can be quickly engaged through the positioning protrusion end 35 and the positioning groove 36, and then the two arc-shaped members and the C-axis assembly 1 are fixed.

[0056] It should be noted that there is no specific limitation on the shapes of the positioning protrusion 35 and the positioning groove 36 , and in actual design, they may be rectangular or arc-shaped.

[0057] In a preferred embodiment, see Figure 5 , the first engaging portion 4 comprises:

[0058] The engaging housing 41 is disposed outside the C-axis assembly 1; the top of the engaging housing 41 has an opening 42; a engaging block 43 is movably disposed inside the engaging housing 41;

[0059] When the engaging housing 41 rotates driven by the C-axis assembly 1 , the engaging block 43 can rotate along the limiting groove. When the engaging block 43 rotates to both ends of the limiting groove, the C-axis assembly 1 stops rotating.

[0060] The engaging block 43 is the engaging end that rotates under the drive of the C-axis. Since the limiting groove is spiral, in order to avoid the engaging block 43 and the limiting groove being stuck before entering the stop area, the engaging block 43 is movably arranged and has a certain amount of mobility. When the engaging block 43 rotates to the two ends of the limiting groove, it is equivalent to the aforementioned "the groove wall at the stop point of the limiting groove contacts and engages with the engaging end". Then, since the limiting groove hinders the movement of the engaging block 43, the C-axis assembly 1 will also stop rotating.

[0061] In a preferred embodiment, see Figure 5 The first engaging portion 4 further includes: a travel rod 44, the number of the travel rod 44 is at least two; the two travel rods 44 are arranged in parallel in the engaging housing 41 and are located at the opening 42;

[0062] The engaging block 43 is movably disposed on two travel rods 44 , and the travel rods 44 are used to provide guidance for the engaging block 43 .

[0063] The two travel rods 44 can provide guidance for the movement of the locking block 43 in the opening 42. In order to prevent the locking block 43 from being unstable due to one travel rod 44, two travel rods 44 are selected here; and the locking block 43 is movably mounted on the travel rod 44 to achieve flexible movement of the locking block 43 on the travel rod 44, preventing the locking block 43 from being stuck in the limit groove midway, thereby affecting the normal operation of the five-axis linkage swing head.

[0064] In a preferred embodiment, see Figure 2 and Figure 5 The top of the locking block 43 also has an extension section, which extends in a direction perpendicular to the top surface of the locking block 43; the extension section is located in the limiting groove, and the length of the cross section of the extension section along the first direction is matched with the depth of the limiting groove; the first direction is a direction perpendicular to the top surface of the locking block 43; the extension section forms a locking end.

[0065] Also out of consideration for the movement stability of the locking block 43, since the width of the limiting groove is limited, and the locking block 43 needs to take into account the movement stability, it is not easy to be too narrow. Then, the extension section at the top of the locking block 43 can be used to extend into the limiting groove to realize the rotation restriction of the C-axis assembly 1, rather than limiting the overall volume of the locking block 43.

[0066] It should be noted that the length of the cross section of the extension section along the first direction is matched with the depth of the limiting groove. The first direction here is the vertical direction. It can be simply understood that it is necessary to ensure that the extension section extends into the limiting groove by a certain distance to ensure the stability of the two when they are engaged.

[0067] Based on the above description, the embodiment of the present application proposes a limit structure of a five-axis linkage swing head that can limit the rotation angle of the C-axis. First, when the direct drive motor in the C-axis assembly 1 is started, the first engaging portion 4 on the A-axis housing can be driven to rotate along the Z direction of the machine tool. At this time, the engaging block 43 in the first engaging portion 4 will also slide in the limiting groove formed on the bottom surface of the first limiting portion 3. Since the limiting groove plays a role in controlling the rotation angle, the limiting groove is spiral in shape as a whole to form a groove stop point. Therefore, when the engaging block 43 follows the rotation, the travel rod 44 will also provide the engaging block 43 with a range of flexible movement at the opening 42, further ensuring the stability of the limit structure. When the extended end of the engaging block 43 contacts the groove stop point, the C-axis stops rotating, thereby preventing the C-axis from rotating beyond the limit, ensuring that the wires will not be entangled or damaged, and affecting the operation of the five-axis linkage swing head.

[0068] Example 2

[0069] Based on the limiting structure shown in Example 1, see Figure 6The embodiment of the present application provides a five-axis linkage swing head, which includes: a C-axis assembly 1 and an A-axis assembly 2, wherein the C-axis assembly 1 is provided with a ram flange 11 for connecting to a machine tool;

[0070] From the description of Example 1, it can be seen that the limiting structure includes a first limiting portion 3 and a first clamping portion 4 that cooperate with each other; the two are arranged at the following positions: the first limiting portion 3 is fixedly connected to the sliding flange 11; and the first clamping portion 4 is arranged outside the A-axis assembly 2.

[0071] In addition to the conventional spindle, A-axis and C-axis structures, the five-axis linkage swing head also includes a first limit portion 3 and a first clamping portion 4 respectively arranged on the C-axis assembly 1 and the A-axis assembly 2. The first limit portion 3 and the first clamping portion 4 cooperate with each other to effectively prevent the C-axis rotation over-limit problem caused by different 0-point indexing settings of controllers from different manufacturers, reduce the occurrence of wire entanglement or damage, and ensure the smooth operation of the five-axis linkage swing head.

[0072] Example 3

[0073] Based on the five-axis linkage swing head shown in Example 2, the embodiment of the present application proposes a CNC machine tool, which improves the processing efficiency of the CNC machine tool and ensures the smooth implementation of the production plan by installing the five-axis linkage swing head shown in Example 2.

[0074] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A limiting structure for a five-axis linkage swing head, characterized in that: Applied to the five-axis linkage swing head, the five-axis linkage swing head comprises a C-axis assembly (1) and an A-axis assembly (2); the limiting structure comprises: a first limiting portion (3) and a first engaging portion (4) that cooperate with each other; The first limiting portion (3) is arranged outside the C-axis assembly (1) and forms a limiting space thereon; The first engaging portion (4) is arranged outside the A-axis assembly (2) and has an engaging end, and the engaging end is used to cooperate with the limiting space to constrain the rotation angle of the C-axis assembly (1).

2. The limiting structure of the five-axis linkage swing head according to claim 1 is characterized in that: The middle part of the first limiting portion (3) is a through hole in a ring shape; The C-axis assembly (1) is located in the through hole, and the first limiting portion (3) and the C-axis assembly (1) are fixedly connected via a connecting piece (5).

3. The limiting structure of the five-axis linkage swing head according to claim 2 is characterized in that: The first limiting portion (3) comprises two detachable first arc-shaped parts (31) and a second arc-shaped part (32); A first limiting groove (33) and a second limiting groove (34) extending along the bending direction of the first arc-shaped member (31) and the second arc-shaped member (32) are respectively provided on the bottom surface thereof, and the directions of the groove openings of the two are both oriented in a direction parallel to the axis of the C-axis assembly (1).

4. The limiting structure of the five-axis linkage swing head according to claim 3 is characterized in that: When the first arc-shaped member (31) and the second arc-shaped member (32) are installed outside the C-axis assembly (1), the ends of the first limiting groove (33) and the second limiting groove (34) are arranged correspondingly to form a limiting groove together; The limiting groove is in a spiral shape to form groove end points at both ends of the limiting groove, and the limiting groove is the limiting space.

5. The limiting structure of the five-axis linkage swing head according to claim 3 is characterized in that: The first arc-shaped member (31) and the second arc-shaped member (32) are respectively provided with a positioning protrusion end (35) and a positioning groove (36) matched with the positioning protrusion end (35); the positioning protrusion end (35) and the positioning groove (36) are used to assist in the assembly of the first arc-shaped member (31) and the second arc-shaped member (32).

6. The limiting structure of the five-axis linkage swing head according to claim 4 is characterized in that: The first engaging portion (4) comprises: A snap-fit ​​housing (41) is arranged outside the A-axis assembly (2); the snap-fit ​​housing (41) has an opening (42) at the top; and a snap-fit ​​block (43) is movably arranged inside the snap-fit ​​housing (41); When the engaging housing (41) rotates driven by the C-axis assembly (1), the engaging block (43) can rotate along the limiting groove; when the engaging block (43) rotates to the two ends of the limiting groove, the C-axis assembly (1) stops rotating.

7. The limiting structure of the five-axis linkage swing head according to claim 6 is characterized in that: The first engaging portion (4) further comprises: A travel rod (44), the number of the travel rods (44) being at least two; the two travel rods (44) being arranged in parallel in the engaging housing (41) and located at the opening (42); The engaging block (43) is movably arranged on the two travel rods (44), and the travel rods (44) are used to provide guidance for the engaging block (43).

8. The limiting structure of the five-axis linkage swing head according to claim 6 is characterized in that: The top of the locking block (43) also has an extension section, which extends in a direction perpendicular to the top surface of the locking block (43); the extension section is located in the limiting groove, and the length of the cross section of the extension section along the first direction is matched with the depth of the limiting groove; The first direction is a direction perpendicular to the top surface of the locking block (43); and the extension section forms the locking end.

9. A five-axis linkage swing head, characterized in that: A limiting structure of a five-axis linkage swing head according to any one of claims 1 to 8 is applied; the five-axis linkage swing head comprises: a C-axis assembly (1) and an A-axis assembly (2); the C-axis assembly (1) is provided with a ram flange (11) for connecting to a machine tool; The first limiting portion (3) is fixedly connected to the ram flange (11); and the first clamping portion (4) is arranged outside the A-axis assembly (2).

10. A numerically controlled machine tool, characterized in that: The invention relates to a five-axis linkage swing head as described in claim 9.

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