A five-axis head C-axis rotation limiting mechanism, a five-axis swing head and a five-axis machine tool

Abstract

The application discloses a five-axis head C-axis rotation limiting mechanism, a five-axis swing head and a five-axis machine tool, and relates to the technical field of machining equipment. In the limiting mechanism, the driven part is rotatably arranged on the supporting assembly and is used for being in transmission connection with the C-axis of the five-axis swing head; the first end of the third sensing part is rotatably arranged on the supporting assembly, and the rotation center line of the third sensing part is parallel to the rotation center line of the driven part; the second end of the driven part is provided with a spiral guide part, the third sensing part is provided with a linkage part, and the linkage part is slidably inserted into the spiral guide part; the over-limit sensor is located on the side surface of the third sensing part and is used for sensing the second end of the third sensing part, so as to detect whether the C-axis in the five-axis swing head rotates within a preset angle range; the controller is signal-connected with the over-limit sensor and is signal-connected with the driving device for driving the C-axis to rotate, so as to control the start and stop of the driving device according to the sensing result of the over-limit sensor, and the limiting mechanism can effectively avoid excessive winding of the pipeline in the five-axis swing head.

Description

Technical Field

[0001] This application relates to the field of processing equipment technology, and more specifically, to a five-axis head C-axis rotation limiting mechanism. Furthermore, the present invention also relates to a five-axis oscillating head including the aforementioned five-axis head C-axis rotation limiting mechanism. Moreover, the present invention also relates to a five-axis machine tool including the aforementioned five-axis oscillating head. Background Technology

[0002] The five-axis swivel head is the core component of a five-axis machine tool. It is typically equipped with X, Y, and Z axes, and the swivel head is mounted on one of these axes. This allows the swivel head to move along the X, Y, and Z axes via the X, Y, and Z axes. The swivel head itself is also equipped with A and C axes, which control the machining tools to rotate around the A and C axes respectively, thus enabling five-axis machining.

[0003] During the rotation of the oscillating head around the C-axis, the cables and pipes inside the oscillating head will rotate synchronously. However, the continuous rotation of the oscillating head around the C-axis in the same direction can cause the internal pipes to become entangled or even damaged.

[0004] In summary, how to avoid excessive entanglement of internal pipelines in the oscillating head is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide a five-axis head C-axis rotation limiting mechanism, which can effectively prevent excessive winding of the internal pipeline of the swing head.

[0006] Another object of the present invention is to provide a five-axis oscillating head including the above-mentioned five-axis head C-axis rotation limiting mechanism.

[0007] Another object of the present invention is to provide a five-axis machine tool including the above-described five-axis oscillating head.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A five-axis head C-axis rotation limit mechanism includes: a support assembly, a follower, a third sensing element, an over-limit sensor, and a controller;

[0010] The driven member is rotatably disposed on the support assembly and is used for transmission connection to the C-axis of the five-axis oscillating head;

[0011] The first end of the third sensing element is rotatably disposed on the support assembly, and the rotation center line of the third sensing element is parallel to the rotation center line of the driven element.

[0012] The second end of the driven member has a spiral guide portion, which extends and spirals around the rotation center line of the driven member. The third sensing member is provided with a linkage member, which is slidably inserted into the spiral guide portion.

[0013] The over-limit sensor is located on the side of the third sensor and is used to sense the second end of the third sensor to detect whether the C-axis of the five-axis oscillating head rotates within a preset angle range.

[0014] The controller signal is connected to the over-limit sensor, and the controller is used to signal the drive device that drives the C-axis of the five-axis oscillating head to rotate, so as to control the start and stop of the drive device according to the sensing result of the over-limit sensor.

[0015] Preferably, it also includes a first sensor, a second sensor, a forward sensor, and a reverse sensor.

[0016] The spiral guide portion is located at the second end of the driven member, and the first sensing element and the second sensing element are both located at the first end of the driven member;

[0017] Both the forward sensor and the reverse sensor are located on the support assembly. The forward sensor is used to sense the first sensing element and to detect whether the C-axis in the five-axis oscillating head has rotated to the forward limit angle. The reverse sensor is used to sense the second sensing element and to detect whether the C-axis in the five-axis oscillating head has rotated to the reverse limit angle.

[0018] The controller is connected to the forward sensor and the reverse sensor to control the start and stop of the drive device based on the sensing results of the forward sensor and the reverse sensor.

[0019] Preferably, the forward sensor, the reverse sensor, and the over-limit sensor are all proximity switches.

[0020] Preferably, the third sensing element is a C-shaped block structure;

[0021] The middle block of the third sensing element has a first mounting hole, and a first bearing is sleeved inside the first mounting hole. The first end of the linkage element is inserted into the first mounting hole, and the second end is slidably inserted into the spiral guide portion.

[0022] Preferably, it also includes a limiting rod, the first end of the third sensing element has a second mounting hole, the second mounting hole is fitted with a second bearing, the limiting rod is inserted into the second bearing, and the third sensing element is rotatably disposed on the support assembly through the limiting rod;

[0023] It also includes a connecting rod, a first pad tube, a second pad tube, and a third bearing; the support assembly includes a base and a moving part.

[0024] The connecting rod and the third sensing element are both located on the base. One end of the connecting rod is fixed to the base, and the moving element is fixed to the other end of the connecting rod.

[0025] The first pad tube, the third bearing, and the second pad tube are sleeved on the outside of the connecting rod along the length direction of the connecting rod. The driven member is sleeved on the outside of the third bearing. The forward sensor and the reverse sensor are both located on the driven member.

[0026] Preferably, it also includes a first fastener, a second fastener, a shaft retaining ring, and a first washer;

[0027] One end of the connecting rod is fixed to the support assembly by a first fastener, and the moving part is fixed to the other end of the connecting rod by a second fastener;

[0028] The shaft retaining ring and the first washer are both sleeved on the outside of the connecting rod, and the shaft retaining ring is sandwiched between the third bearing and the second washer tube, and the first washer is sandwiched between the second fastener and the moving member.

[0029] Preferably, the distance between one of the first and second sensors and the rotation center line of the driven member is greater than the distance between the other and the rotation center line of the driven member, and the line connecting the first and second sensors has a non-zero angle with the rotation center line of the driven member.

[0030] Preferably, it also includes a driving wheel and a timing belt, the driven member is a gear structure, the timing belt meshes with the driven member and the driving wheel, and the driving wheel is coaxially and driven by being sleeved on the C-axis of the five-axis oscillating head.

[0031] A five-axis oscillating head, comprising the C-axis rotation limiting mechanism of the five-axis head as described in any one of the above claims.

[0032] A five-axis machine tool, including the aforementioned five-axis swivel head.

[0033] The five-axis head C-axis rotation limiting mechanism provided by this invention includes a support assembly for mounting and supporting a driven member, a first sensor, a second sensor, a forward sensor, a reverse sensor, etc.; the driven member is rotatably mounted on the support assembly and is used to drive the C-axis of the five-axis head, so that the driven member can rotate under the drive of the C-axis; one end of the third sensor is rotatably connected to the support assembly, and the rotation center line of the third sensor and the rotation center line of the driven member are parallel to each other. A linkage member is installed on the side of the third sensor near the driven member. Correspondingly, a spiral channel is opened at the end of the driven member near the third sensor as a spiral guide part, and the free end of the linkage member is inserted into the spiral guide part so that the rotation of the driven member can guide the rotation of the third sensor synchronously.

[0034] Furthermore, an over-limit sensor is installed on the side of the third sensing element and on the support assembly. During the reciprocating rotation of the third sensing element within a preset angle range, the over-limit sensor can detect the free end of the third sensing element. Typically, the C-axis of the five-axis oscillating head is equipped with a drive device to drive the rotation of the C-axis. To control the C-axis to reciprocate within the preset angle range in either the forward or reverse direction, the controller signal is connected to the over-limit sensor. Based on the sensing result of the over-limit sensor, it can be determined whether the C-axis is reciprocating within the preset angle range in either the forward or reverse direction. The controller signal is also connected to the aforementioned drive device to control the start or stop of the drive device. When the C-axis rotates beyond the preset angle range, the drive device is stopped to prevent excessive winding of the internal pipelines of the oscillating head. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0036] Figure 1 This is a top view of a specific embodiment provided by the present invention;

[0037] Figure 2 This is a schematic diagram of the structure of a specific embodiment provided by the present invention;

[0038] Figure 3 Exploded views of specific embodiments provided by the present invention;

[0039] Figure 4 The diagram shows the structure of the moving part, the forward sensor, and the reverse sensor according to a specific embodiment of the present invention.

[0040] Figure 5 A cross-sectional view of a specific embodiment provided by the present invention;

[0041] Figure 6 A schematic diagram of the structure of the third sensing element, the first bearing, and the second bearing in a specific embodiment of the present invention;

[0042] Figure 7 This is a bottom view of the follower in a specific embodiment of the present invention.

[0043] Figure label:

[0044] 1-Support assembly; 101-Base; 102-Carrying component; 2-Driven component; 201-Screw guide; 3-First sensor; 4-Second sensor; 5-Forward sensor; 6-Reverse sensor; 7-Third sensor; 8-Over-limit sensor; 9-Linkage component; 10-First bearing; 11-Limit rod; 12-Second bearing; 13-Connecting rod; 14-First pad; 15-Second pad; 16-Third bearing; 17-First fastener; 18-Second fastener; 19-Shaft retaining ring; 20-First washer; 21-Drive pulley; 22-Synchronous belt; 23-Nut; 24-Second washer. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] The core of this application is to provide a C-axis rotation limiting mechanism for a five-axis head, which can effectively prevent excessive winding of internal tubing in the five-axis swivel head. Another core aspect of this invention is to provide a five-axis swivel head including the aforementioned C-axis rotation limiting mechanism. Yet another core aspect of this invention is to provide a five-axis machine tool including the aforementioned five-axis swivel head.

[0047] Please refer to Figures 1 to 7 This invention provides a C-axis rotation limiting mechanism for a five-axis head, comprising a support assembly 1, a driven member 2, a third sensor 7, an over-limit sensor 8, and a controller. The driven member 2 is rotatably mounted on the support assembly 1 and is used for transmission connection to the C-axis of the five-axis head. The first end of the third sensor 7 is rotatably mounted on the support assembly 1, and the rotation center line of the third sensor 7 is parallel to the rotation center line of the driven member 2. The second end of the driven member 2 has a helical guide 201, which extends and spirals around the rotation center line of the driven member 2. The third sensor 7 is provided with a linkage 9, which is slidably inserted into the helical guide 201. The over-limit sensor 8 is located on the side of the third sensor 7 and is used to sense the second end of the third sensor 7 to detect whether the C-axis in the five-axis head rotates within a preset angle range. The controller is signal-connected to the over-limit sensor 8, and the controller is also signal-connected to the drive device that drives the C-axis rotation of the five-axis head to control the start and stop of the drive device according to the sensing result of the over-limit sensor 8.

[0048] The support component 1 can be a block structure or a frame structure, etc., to install and support the driven component 2, the first sensing component 3, the second sensing component 4, the forward sensor 5, the reverse sensor 6, etc.

[0049] The follower 2 is rotatably mounted on the support assembly 1 and is used to drive the C-axis of the five-axis oscillating head. The follower 2 can rotate under the drive of the C-axis. It should be noted that the type of follower 2 is not limited, as long as it can receive the movement of the C-axis without hindering the movement of the five-axis oscillating head. For example, the follower 2 can be a pulley or a spur gear.

[0050] The left end of the third sensing element 7 is rotatably connected to the support assembly 1, and the rotation center line of the third sensing element 7 and the rotation center line of the driven element 2 both extend vertically and are parallel to each other. A linkage element 9 is installed on the upper side of the third sensing element 7 near the driven element 2. The linkage element 9 can adopt a rod-shaped structure or a needle-shaped structure, etc. Correspondingly, a spiral channel is opened at the lower end of the driven element 2 near the third sensing element 7 as a spiral guide part 201. The upper end of the linkage element 9 is inserted into the spiral guide part 201 so that the rotation of the third sensing element 7 can be guided synchronously by the rotation of the driven element 2.

[0051] Furthermore, an over-limit sensor 8 is installed on the support assembly 1 on the side of the third sensing element 7. During the reciprocating rotation of the third sensing element 7 within a preset angle range, the over-limit sensor 8 can sense the right end of the third sensing element 7. Typically, the C-axis of the five-axis oscillating head is equipped with a drive device to drive the rotation of the C-axis. To control the C-axis to rotate in the forward or reverse direction within a preset angle range, such as -40° to 40°, the controller signal is connected to the over-limit sensor 8 so that it can determine whether the C-axis is rotating in the forward or reverse direction within the preset angle range based on the sensing result of the over-limit sensor 8. The controller signal is also connected to the drive device to control the start or stop of the drive device. When the C-axis rotates beyond the preset angle range, the drive device is controlled to stop to avoid excessive winding of the internal pipelines of the oscillating head.

[0052] Please refer to Figures 1 to 5 Based on the above embodiment, it further includes a first sensor 3, a second sensor 4, a forward sensor 5, and a reverse sensor 6. The spiral guide 201 is located at the second end of the driven member 2, and the first sensor 3 and the second sensor 4 are both located at the first end of the driven member 2. The forward sensor 5 and the reverse sensor 6 are both located on the support assembly 1. The forward sensor 5 is used to sense the first sensor 3 to detect whether the C-axis in the five-axis oscillating head has rotated to the forward limit angle. The reverse sensor 6 is used to sense the second sensor 4 to detect whether the C-axis in the five-axis oscillating head has rotated to the reverse limit angle. The forward limit angle is greater than the positive limit of a preset angle range, and the reverse limit angle is less than the negative limit of a preset angle range. The controller is signal-connected to the forward sensor 5 and the reverse sensor 6 to control the start and stop of the drive device according to the sensing results of the forward sensor 5 and the reverse sensor 6.

[0053] A first sensor 3 and a second sensor 4 are also installed on the driven component 2. Correspondingly, a forward sensor 5 and a reverse sensor 6 are installed on the support component 1. The forward sensor 5 can sense the first sensor 3, and similarly, the reverse sensor 6 can sense the second sensor 4. The controller signal is connected to the first sensor 3 and the second sensor 4 so that it can determine whether the C-axis is rotating to the forward limit angle or to the reverse limit angle based on the sensing results of the first sensor 3 and the second sensor 4, so as to control the above-mentioned drive device to stop. For example, when the C-axis rotates 360° clockwise, the forward sensor 5 senses the first sensor 3, thereby controlling the C-axis to stop rotating through the controller. Conversely, when the C-axis rotates 360° counterclockwise, the reverse sensor 6 senses the second sensor 4, thereby controlling the C-axis to stop rotating through the controller.

[0054] It should be noted that the arrangement of the first sensing element 3 and the second sensing element 4 is not limited, as long as the above function can be achieved. For example, the first sensing element 3 and the second sensing element 4 are arranged radially collinearly with the follower 2, and the line connecting the forward sensor 5 and the reverse sensor 6 has a non-zero angle with the line connecting the first sensing element 3 and the second sensing element 4. Thus, when the forward sensor 5 senses the first sensing element 3, the reverse sensor 6 cannot sense the second sensing element 4.

[0055] Furthermore, after receiving the over-limit sensor 8, the controller prioritizes the over-limit sensor 8 regardless of whether it receives signals from the forward sensor 5 or the reverse sensor 6. It controls the start and stop of the C-axis based on the over-limit sensor 8 signal, thus preventing the C-axis rotation of the five-axis oscillating head from exceeding the preset angle range. Conversely, when the over-limit sensor 8 signal is not received, the controller controls the start and stop of the C-axis based on the forward sensor 5 or the reverse sensor 6 signal, thus preventing the C-axis rotation of the five-axis oscillating head from exceeding the limit angle.

[0056] With this setup, the start and stop of the C-axis are controlled by three sensors in a comprehensive manner, resulting in simple control logic and fast response speed.

[0057] It should be noted that there are no restrictions on the types of forward sensor 5, reverse sensor 6, and over-limit sensor 8, as long as they can correspond to the first sensor 3, the second sensor 4, and the third sensor 7. For example, an inductive photoelectric switch can be used.

[0058] refer to Figures 1 to 5 Based on the above embodiments, the forward sensor 5, the reverse sensor 6, and the over-limit sensor 8 are all proximity switches.

[0059] refer to Figure 2 , Figure 3 and Figure 6 Based on the above embodiments, the third sensing element 7 is a C-shaped block structure; the middle block of the third sensing element 7 has a first mounting hole, the first bearing 10 is sleeved inside the first mounting hole, the first end of the linkage 9 is inserted into the first mounting hole, and the second end is slidably inserted into the spiral guide 201.

[0060] The third sensing element 7 of the C type has a vertical through hole in the middle as the first mounting hole, and a first bearing 10 is inserted in the first mounting hole. The first bearing 10 is fixed in the first mounting hole of the third sensing element 7 by interference fit of the outer ring. The linkage 9 passes through the center hole of the first bearing 10, so the linkage 9 can rotate freely relative to the third sensing element 7, thereby improving the smoothness of the operation of the limiting mechanism.

[0061] In some specific embodiments, the linkage 9 is a threaded rod that passes through the first bearing 10 and is fixed to the first bearing 10 by a nut 23.

[0062] refer to Figure 2 , Figure 3 , Figure 5 and Figure 6 Based on the above embodiments, the system further includes a limiting rod 11, a second mounting hole at the first end of the third sensing element 7, a second bearing 12 sleeved inside the second mounting hole, the limiting rod 11 inserted inside the second bearing 12, and the third sensing element 7 rotatably mounted on the support assembly 1 via the limiting rod 11; it also includes a connecting rod 13, a first pad tube 14, a second pad tube 15, and a third bearing 16. The support assembly 1 includes a base 101 and a carrier 102; the connecting rod 13 and the third sensing element 7 are both mounted on the base 101, one end of the connecting rod 13 is fixed to the base 101, and the carrier 102 is fixed to the other end of the connecting rod 13; the first pad tube 14, the third bearing 16, and the second pad tube 15 are sleeved outside the connecting rod 13 along the length direction of the connecting rod 13, the driven element 2 is sleeved outside the third bearing 16, and the forward sensor 5 and the reverse sensor 6 are both mounted on the carrier 102.

[0063] The limiting rod 11 can be a screw or a pin, etc. Similarly, a vertical through hole is opened at the left end of the C-shaped third sensing element 7 as a second mounting hole, and a second bearing 12 is inserted in the second mounting hole. The second bearing 12 is fixed in the second mounting hole of the third sensing element 7 by interference fit of the outer ring. The limiting rod 11 passes through the center hole of the second bearing 12, and the lower end of the limiting rod 11 is fixed on the support assembly 1, so the third sensing element 7 can rotate freely relative to the support assembly 1.

[0064] In some specific embodiments, the second gasket 24 is sandwiched between the base 101 and the inner ring of the second bearing 12 to ensure the smooth rotation of the inner ring of the second bearing 12.

[0065] Furthermore, the connecting rod 13 extends vertically, and the lower end of the connecting rod 13 is fixed on the support assembly 1. The moving part 102 is fixed on the upper end of the connecting rod 13 by a pressure plate, etc. A third bearing 16 is sleeved on the outside of the connecting rod 13, and the driven part 2 is sleeved on the outside of the third bearing. The driven part 2 is rotatably mounted on the support assembly 1 through the third bearing 16 and the connecting rod 13. In order to position the driven part 2, a first pad tube 14, a third bearing 16 and a second pad tube 15 are sequentially sleeved on the outside of the connecting rod 13 from bottom to top between the moving part 102 and the base 101.

[0066] It should be noted that there is no limit to the number of third bearings 16, as long as the installation requirements of the limiting mechanism can be met, such as two or three.

[0067] refer to Figure 3 and Figure 5 Based on the above embodiments, it also includes a first fastener 17, a second fastener 18, a shaft retaining ring 19, and a first washer 20; one end of the connecting rod 13 is fixed to the support assembly 1 by the first fastener 17, and the moving member 102 is fixed to the other end of the connecting rod 13 by the second fastener 18; the shaft retaining ring 19 and the first washer 20 are both sleeved on the outside of the connecting rod 13, and the shaft retaining ring 19 is sandwiched between the third bearing 16 and the second washer tube 15, and the first washer 20 is sandwiched between the second fastener 18 and the moving member 102.

[0068] In some specific embodiments, the central through hole of the follower 2 includes a limiting groove, and the shaft retaining ring 19 is sleeved in the limiting groove of the central through hole of the follower 2.

[0069] In support assembly 1, the base 101 can be a rectangular block or a rod, and the moving part 102 can be a fan-shaped plate or a triangular plate. Vertical through holes are provided on both the base 101 and the moving part 102. A first fastener 17 passes through the base 101 and extends into the lower end of the connecting rod 13 to fix the connecting rod 13. A second fastener 18 passes through the moving part 102 and extends into the upper end of the connecting rod 13 to fix the moving part 102. Thus, the base 101 and the moving part 102 can be fixed together as one unit via the connecting rod 13. Furthermore, a shaft retaining ring 19 is sandwiched between the upper third bearing 16 and the second washer tube 15, and a first washer 20 is sandwiched between the second fastener 18 and the moving part 102. In summary, this design helps ensure the smooth operation of the limiting mechanism, and the layout is reasonable and the structure is compact.

[0070] refer to Figure 1 , Figure 2 and Figure 4Based on the above embodiments, the distance between one of the first sensing element 3 and the rotation center line of the driven element 2 is greater than the distance between the other and the rotation center line of the driven element 2, and the line connecting the first sensing element 3 and the second sensing element 4 has a non-zero angle with the rotation center line of the driven element 2.

[0071] The distance between the first sensing element 3 and the rotation center line of the driven element 2 is greater than or less than the distance between the second sensing element 4 and the rotation center line of the driven element 2, for reference. Figure 1 As shown, the rotation center line of the driven member 2 extends in a direction perpendicular to the paper. The first sensor 3 is located above the second sensor 4. The line connecting the first sensor 3 and the second sensor 4 has a non-zero angle with the rotation center line of the driven member 2, such as 30 degrees or 45 degrees. With this setting, the limiting mechanism can easily control the C-axis to rotate in the forward or reverse direction by a preset angle and then stop.

[0072] refer to Figure 1 Based on the above embodiment, it also includes a drive wheel 21 and a timing belt 22. The driven member 2 is a gear structure. The timing belt 22 meshes with the driven member 2 and the drive wheel 21. The drive wheel 21 is coaxial and driven by the C-axis of the five-axis swing head.

[0073] The driving wheel 21 is located on the side of the driven member 2, and the rotation center line of the driving wheel 21 is parallel to the rotation center line of the driven member 2. The timing belt 22 is wrapped around the outer periphery of the driving wheel 21 and the driven member 2. In use, the driving wheel 21 is fitted onto the C-axis of the five-axis oscillating head by means of key connection or welding. The rotation of the C-axis can drive the driven wheel to rotate in sequence through the driving member and the timing belt 22. With this setting, long-distance linkage can be achieved with the C-axis through the timing belt 22 and the driving wheel 21, which is convenient for the layout of the limiting mechanism and helps to improve the durability of the limiting mechanism. The structure is simple and easy to maintain during use.

[0074] In addition to the aforementioned five-axis head C-axis rotation limiting mechanism, the present invention also provides a five-axis oscillating head including the five-axis head C-axis rotation limiting mechanism disclosed in the above embodiments. The structure of other parts of the five-axis oscillating head is described in the prior art and will not be repeated here.

[0075] In addition to the aforementioned five-axis head C-axis rotation limiting mechanism and five-axis swivel head, the present invention also provides a five-axis machine tool including the five-axis swivel head disclosed in the above embodiments. For the structure of other parts of the five-axis machine tool, please refer to the prior art, which will not be repeated here.

[0076] It should be noted that the relational terms such as "first" and "second" mentioned above are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities; the terms "upper surface," "lower surface," "top," and "bottom" and the directional terms "upper," "lower," "left," and "right" mentioned above are defined based on the accompanying drawings in the specification.

[0077] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0078] The foregoing has provided a detailed description of the five-axis C-axis rotation limiting mechanism, the five-axis swivel head, and the five-axis machine tool provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A five-axis head C-axis rotation limiting mechanism, characterized in that, include: Support component (1), driven component (2), third sensing component (7), over-limit sensor (8) and controller; The driven member (2) is rotatably disposed on the support assembly (1) and is used for transmission connection to the C-axis of the five-axis swing head; The first end of the third sensing element (7) is rotatably disposed on the support assembly (1), and the rotation center line of the third sensing element (7) is parallel to the rotation center line of the driven element (2). The second end of the driven member (2) has a spiral guide (201), which extends and spirals around the rotation center line of the driven member (2). The third sensing member (7) is provided with a linkage member (9), which is slidably inserted into the spiral guide (201). The over-limit sensor (8) is located on the side of the third sensor (7) and is used to sense the second end of the third sensor (7) to detect whether the C-axis of the five-axis oscillating head rotates within a preset angle range. The controller signal is connected to the over-limit sensor (8), and the controller is used to connect to the drive device that drives the C-axis of the five-axis oscillating head to rotate, so as to control the start and stop of the drive device according to the sensing result of the over-limit sensor (8). It also includes a first sensor (3), a second sensor (4), a forward sensor (5), and a reverse sensor (6). The spiral guide (201) is located at the second end of the driven member (2), and the first sensing element (3) and the second sensing element (4) are both located at the first end of the driven member (2); Both the forward sensor (5) and the reverse sensor (6) are located on the support assembly (1). The forward sensor (5) is used to sense the first sensor (3) and to detect whether the C-axis in the five-axis oscillating head rotates to the forward limit angle. The reverse sensor (6) is used to sense the second sensor (4) and to detect whether the C-axis in the five-axis oscillating head rotates to the reverse limit angle. The forward limit angle is greater than the positive limit of the preset angle range, and the reverse limit angle is less than the negative limit of the preset angle range. The controller is signal-connected to the forward sensor (5) and the reverse sensor (6) to control the start and stop of the drive device based on the sensing results of the forward sensor (5) and the reverse sensor (6).

2. The five-axis head C-axis rotation limiting mechanism according to claim 1, characterized in that, The forward sensor (5), the reverse sensor (6), and the over-limit sensor (8) are all proximity switches.

3. The five-axis head C-axis rotation limiting mechanism according to claim 1, characterized in that, The third sensing element (7) has a C-shaped block structure; The middle block of the third sensing element (7) has a first mounting hole, and a first bearing (10) is sleeved inside the first mounting hole. The first end of the linkage element (9) is inserted into the first mounting hole, and the second end is slidably inserted into the spiral guide (201).

4. The five-axis head C-axis rotation limiting mechanism according to claim 3, characterized in that, It also includes a limiting rod (11), the first end of the third sensing element (7) has a second mounting hole, the second mounting hole is fitted with a second bearing (12), the limiting rod (11) is inserted into the second bearing (12), and the third sensing element (7) is rotatably disposed on the support assembly (1) through the limiting rod (11). It also includes a connecting rod (13), a first pad tube (14), a second pad tube (15) and a third bearing (16), and the support assembly (1) includes a base (101) and a moving part (102). The connecting rod (13) and the third sensing element (7) are both located on the base (101). One end of the connecting rod (13) is fixed to the base (101), and the moving element (102) is fixed to the other end of the connecting rod (13). The first pad tube (14), the third bearing (16) and the second pad tube (15) are sleeved on the outside of the connecting rod (13) along the length direction of the connecting rod (13), the driven member (2) is sleeved on the outside of the third bearing (16), and the forward sensor (5) and the reverse sensor (6) are both located on the carrier member (102).

5. The five-axis head C-axis rotation limiting mechanism according to claim 4, characterized in that, It also includes a first fastener (17), a second fastener (18), a shaft retaining ring (19), and a first washer (20). One end of the connecting rod (13) is fixed to the support assembly (1) by a first fastener (17), and the moving part (102) is fixed to the other end of the connecting rod (13) by a second fastener (18). The shaft retaining ring (19) and the first washer (20) are both sleeved on the outside of the connecting rod (13), and the shaft retaining ring (19) is sandwiched between the third bearing (16) and the second washer tube (15), and the first washer (20) is sandwiched between the second fastener (18) and the moving member (102).

6. The five-axis head C-axis rotation limiting mechanism according to any one of claims 1 to 5, characterized in that, The distance between one of the first sensing element (3) and the second sensing element (4) and the rotation center line of the driven element (2) is greater than the distance between the other and the rotation center line of the driven element (2), and the line connecting the first sensing element (3) and the second sensing element (4) has a non-zero angle with the rotation center line of the driven element (2).

7. The five-axis head C-axis rotation limiting mechanism according to claim 1, characterized in that, It also includes a drive wheel (21) and a timing belt (22). The driven member (2) is a gear structure. The timing belt (22) meshes with the driven member (2) and the drive wheel (21). The drive wheel (21) is coaxial and driven by the C-axis of the five-axis swing head.

8. A five-axis oscillating head, characterized in that, The five-axis head C-axis rotation limiting mechanism as described in any one of claims 1 to 7 above.

9. A five-axis machine tool, characterized in that, Includes the five-axis oscillating head described in claim 8 above.

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