Locking device of five-axis swing head spindle head

Abstract

The utility model discloses a locking device of five -axis swing head main shaft head, including machining center, the machining center lower extreme is provided with processing motor, the power output shaft end fixed setting of processing motor has the axle head, the axle head lower extreme is provided with the fixed establishment for locking processing tool, the fixed establishment includes the connector, clamping frame, threaded sleeve, narrow mouth, the axle head lower extreme fixed setting has the connector, the connector inside activity is inserted and is provided with clamping frame, the connector outside surface is provided with threaded sleeve through the threaded activity screwing, the connector outside surface is provided with the anti -loose mechanism for preventing threaded sleeve vibration loose. The utility model for use effect is good, and the anti -loose mechanism is added, can make the clamping frame close after the threaded sleeve is twisted, effectively prevent the loosening condition from happening because of the vibration of threaded sleeve, and thus always guarantee the clamping quality of fixed establishment.

Description

Technical Field

[0001] This utility model relates to the field of locking device technology, specifically a locking device for a five-axis oscillating head spindle. Background Technology

[0002] The five-axis swivel spindle head locking device is a core component of a five-axis linkage CNC machine tool. Its function is to fix the position of the spindle head mechanically or hydraulically, so as to ensure the stability and accuracy of the spindle during the machining process.

[0003] In existing technologies, common mechanical fixing methods involve threaded tightening and compression locking heads, while hydraulic fixing methods use hydraulic pressure to drive a tightening ring for tightening. Threaded tightening has a simple structure, while hydraulic drive has a complex structure. This application mainly addresses the improvement of threaded tightening. The existing threaded tightening method has drawbacks, namely the lack of an anti-loosening mechanism at the threaded fixing point. With vibrations during machining, the threaded tightening point may loosen. Therefore, to address this issue, an improved locking device for the five-axis oscillating head spindle is needed. Utility Model Content

[0004] The purpose of this invention is to provide a locking device for a five-axis oscillating head spindle to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a locking device for a five-axis swivel spindle head, comprising a machining center, a machining motor at the lower end of the machining center, a shaft head fixedly mounted on the power output shaft end of the machining motor, and a fixing mechanism for locking machining tools at the lower end of the shaft head. The fixing mechanism includes a connector, a clamping frame, a threaded sleeve, and a narrow opening. The connector is fixedly mounted on the lower end of the shaft head, and the clamping frame is movably inserted inside the connector. A threaded sleeve is movably screwed onto the outer surface of the connector, and an anti-loosening mechanism is provided on the outer surface of the connector to prevent the threaded sleeve from vibrating and loosening. The anti-loosening mechanism includes a movable ring, an annular mounting groove, a first convex tooth, and a second convex tooth. The movable ring is movably fitted onto the outer surface of the connector so that the movable ring can move up and down on the surface of the connector. An annular mounting groove is formed on the outer surface of the upper end of the threaded sleeve, and a plurality of first convex teeth are uniformly fixedly mounted inside the annular mounting groove. A plurality of second convex teeth are uniformly fixedly mounted on the outer surface of the lower end of the movable ring.

[0006] Preferably, the clamping frame is made of an elastic metal material. When the threaded sleeve moves the clamping frame upward and the narrow opening squeezes against each other, the clamping frame can automatically tighten, thereby clamping the tool assembly in the middle of the clamping frame.

[0007] Preferably, a spring is fitted on the outer surface of the connector at the upper end of the movable ring. The lower end of the spring is fixedly connected to the movable ring, and the upper end of the spring is fixedly connected to the outer surface of the shaft head. The spring can automatically spring up and push the movable ring down so that the movable ring can fit tightly against the outer surface of the threaded sleeve.

[0008] Preferably, the cross-sections of the first and second protruding teeth are trapezoidal. This trapezoidal cross-section allows the first and second protruding teeth to create two different compression states during the rotation of the threaded sleeve, such as... Figure 5 From the overhead view shown, when the threaded sleeve rotates and tightens upwards, it will cause the threaded sleeve to rotate counterclockwise. At this time, the inclined surfaces of the first and second protrusions will press and contact each other. As the threaded sleeve rotates, it will push the movable ring upwards and compress the spring. However, after the threaded sleeve has finished rotating and tightening, when it loosens due to vibration and reverses, it will rotate clockwise. At this time, the vertical surfaces of the first and second protrusions will contact each other, thus preventing the threaded sleeve from reversing. When you want to loosen the threaded sleeve manually, you can actively push the movable ring upwards with one hand to separate the first and second protrusions, and then the threaded sleeve can be rotated normally to loosen. At the same time, this device uses a spring to push the movable ring and the threaded sleeve to keep them in close contact to ensure that the first and second protrusions are in contact with each other.

[0009] Preferably, the outer surface of the clamping frame is provided with an annular connecting groove, and the outer surface of the threaded sleeve is provided with a connecting ring. The connecting ring is movably engaged inside the annular connecting groove. By engaging the annular connecting groove with the connecting ring, the clamping frame can be easily moved up and down when the threaded sleeve rotates.

[0010] Preferably, the connector has a first plane on both sides of its surface, and the inner sidewall of the movable ring has a second plane corresponding to the first plane. The first plane and the second plane ensure that the movable ring and the connector are not regular circles. This ensures that after the movable ring is fitted onto the outer surface of the connector, it can only move up and down and cannot rotate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model achieves unidirectional locking through a trapezoidal first and second set of protruding teeth, effectively solving the problem of loosening due to vibration of the threaded pair. The device includes an elastic clamping frame, a threaded sleeve, and an anti-loosening component. A spring pushes a movable ring to engage the protruding teeth. Clockwise rotation completes locking through inclined surface contact, while counterclockwise rotation creates a mechanical blockage on the vertical surface. This structure combines high reliability with easy disassembly.

[0013] 2. When a person wants to disassemble the loose threaded sleeve, they can actively push the movable ring upward with one hand to separate the first tooth from the second tooth, and then rotate the threaded sleeve normally to loosen it; thus, the disassembly of this device is not difficult and is quite convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a locking device for a five-axis oscillating head spindle of the present invention;

[0015] Figure 2 This is a bottom view of a locking device for a five-axis oscillating head spindle of this utility model;

[0016] Figure 3 This is an overall structural view of the movable ring in the locking device of the five-axis oscillating head spindle head of this utility model;

[0017] Figure 4 This is an exploded view of the anti-loosening mechanism in the locking device of a five-axis oscillating head spindle head according to this utility model;

[0018] Figure 5 This is an installation view of the movable ring and threaded sleeve in the locking device of the five-axis oscillating head spindle head of this utility model;

[0019] Figure 6 This utility model relates to a locking device for the spindle head of a five-axis oscillating head. Figure 2 A magnified view of point A in the middle.

[0020] In the diagram: 1. Machining center; 2. Machining motor; 3. Shaft head; 4. Connector head; 5. Clamping frame; 6. Threaded sleeve; 7. Narrow opening; 8. Movable ring; 9. Annular mounting groove; 10. First convex tooth; 11. Second convex tooth; 12. Spring; 13. Annular connecting groove; 14. Connecting ring; 15. First plane; 16. Second plane. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-6This utility model provides a technical solution: a locking device for a five-axis oscillating head spindle, including a machining center 1, a machining motor 2 at the lower end of the machining center 1, and a spindle head 3 fixedly mounted on the power output shaft end of the machining motor 2. The lower end of the spindle head 3 is equipped with a fixing mechanism for locking the machining tool, which consists of a connector 4, a clamping frame 5, a threaded sleeve 6, and a narrow opening 7.

[0023] Connector: The lower end of the shaft head 3 is fixedly connected to the connector 4. The connector 4 has a clamping frame 5 that is movably inserted inside, and the outer surface of the connector 4 is movably screwed into the threaded sleeve 6 through the thread. The upper end of the connector 4 is provided with a narrow opening 7.

[0024] Clamping frame: The clamping frame 5 is made of elastic metal material. When the threaded sleeve 6 moves the clamping frame 5 upward and squeezes against the narrow opening 7, the clamping frame 5 can automatically tighten, thereby clamping the tool assembly in the middle. In addition, an annular connecting groove 13 is provided on the outer surface of the clamping frame 5, and a connecting ring 14 is provided on the outer surface of the threaded sleeve 6. The connecting ring 14 is movably engaged inside the annular connecting groove 13 so that the clamping frame 5 can move up and down when the threaded sleeve 6 rotates. Threaded sleeve: An annular mounting groove 9 is provided on the outer surface of the upper end of the threaded sleeve 6 for installing the relevant components of the anti-loosening mechanism.

[0025] The outer surface of the connector 4 is provided with an anti-loosening mechanism to prevent the threaded sleeve 6 from loosening due to vibration. The anti-loosening mechanism consists of a movable ring 8, an annular mounting groove 9, a first protruding tooth 10, and a second protruding tooth 11.

[0026] Movable ring: A movable ring 8 is movably fitted on the outer surface of the connector 4, allowing the movable ring 8 to move up and down on the surface of the connector 4. A first plane 15 is provided on both sides of the surface of the connector 4, and a second plane 16 corresponding to the first plane 15 is provided on the inner side wall of the movable ring 8. This irregular circular design ensures that after the movable ring 8 is fitted on the outer surface of the connector 4, it can only move up and down and cannot rotate.

[0027] Convex tooth structure: Several first convex teeth 10 are uniformly fixed inside the annular mounting groove 9, and several second convex teeth 11 are uniformly fixed on the outer surface of the lower end of the movable ring 8. The cross-sections of the first convex teeth 10 and the second convex teeth 11 are both trapezoidal.

[0028] Spring assembly: A spring 12 is fitted on the outer surface of the connector 4 at the upper end of the movable ring 8. The lower end of the spring 12 is fixedly connected to the movable ring 8, and the upper end is fixedly connected to the outer surface of the shaft head 3. The spring 12 can automatically spring up and push the movable ring 8 downward, so that the movable ring 8 is tightly attached to the outer surface of the threaded sleeve 6, ensuring that the first protrusion 10 and the second protrusion 11 are in contact with each other.

[0029] Working Principle: Clamping Process: When using this device, the threaded sleeve 6 moves the clamping frame 5 upwards, causing it to press against the narrow opening 7. The clamping frame 5 automatically tightens and clamps the tool assembly in the middle. Simultaneously, during the tightening and upward movement of the threaded sleeve 6, the tool assembly... Figure 5 From the overhead view shown, the threaded sleeve 6 rotates counterclockwise, during which the inclined surfaces of the first tooth 10 and the second tooth 11 press against each other. As the threaded sleeve 6 rotates, the inclined surface of the first tooth 10 presses against the inclined surface of the second tooth 11, pushing the movable ring 8 upward and compressing the spring 12. Subsequently, the first tooth 10 and the second tooth 11 become misaligned, and the movable ring 8 moves downward and resets under the action of the spring 12. This process repeats, ensuring that the first tooth 10 and the second tooth 11 do not obstruct the rotation of the threaded sleeve 6 during tightening.

[0030] Anti-loosening mechanism: After the threaded sleeve 6 is rotated and tightened, if it loosens and reverses due to vibration (i.e., rotates clockwise), the vertical surfaces of the first tooth 10 and the second tooth 11 will come into contact with each other, forming a mechanical block, which effectively prevents the threaded sleeve 6 from reversing, thereby preventing the threaded sleeve 6 from loosening due to vibration.

[0031] Disassembly operation: When it is necessary to manually disassemble and loosen the threaded sleeve 6, one hand can actively push the movable ring 8 upward to separate the first tooth 10 from the second tooth 11. At this time, the threaded sleeve 6 can be rotated normally to loosen it, making disassembly relatively convenient.

[0032] In summary, the trapezoidal tooth assembly achieves unidirectional locking, effectively solving the problem of loosening due to vibration of the threaded pair. The device includes an elastic clamping frame, a threaded sleeve, and anti-loosening components. A spring pushes the movable ring to engage the tooth assembly. Clockwise rotation results in inclined surface contact for locking, while counterclockwise rotation creates a mechanical blockage on the vertical surface. This structure combines high reliability with easy disassembly.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A locking device of a five-axis swiveling head spindle head, comprising a machining center (1), characterized in that: The machining center (1) is equipped with a machining motor (2) at its lower end. A shaft head (3) is fixedly provided at the power output shaft end of the machining motor (2). A fixing mechanism for locking the machining tool is provided at the lower end of the shaft head (3). The fixing mechanism includes a connector (4), a clamping frame (5), a threaded sleeve (6), and a narrow opening (7). The connector (4) is fixedly provided at the lower end of the shaft head (3). The clamping frame (5) is movably inserted inside the connector (4). The threaded sleeve (6) is screwed onto the outer surface of the connector (4) through a thread. A narrow opening (7) is provided at the upper end of the inside of the connector (4). The outer surface of the connector (4) is provided with an anti-loosening mechanism to prevent the threaded sleeve (6) from vibrating and loosening. The anti-loosening mechanism includes a movable ring (8), an annular mounting groove (9), a first protrusion (10), and a second protrusion (11). The movable ring (8) is movably fitted on the outer surface of the connector (4) so ​​that the movable ring (8) can move up and down on the surface of the connector (4). The outer surface of the upper end of the threaded sleeve (6) is provided with an annular mounting groove (9). Several first protrusions (10) are uniformly fixed inside the annular mounting groove (9). Several second protrusions (11) are uniformly fixed on the outer surface of the lower end of the movable ring (8).

2. The locking device of a five-axis swiveling head spindle head according to claim 1, characterized in that The clamping frame (5) is made of elastic metal material.

3. The locking device for a five-axis oscillating head spindle as described in claim 1, characterized in that: A spring (12) is fitted on the outer surface of the connector (4) at the upper end of the movable ring (8). The lower end of the spring (12) is fixedly connected to the movable ring (8), and the upper end of the spring (12) is fixedly connected to the outer surface of the shaft head (3).

4. The locking device for a five-axis oscillating head spindle as described in claim 1, characterized in that: The cross-sections of the first protruding tooth (10) and the second protruding tooth (11) are trapezoidal.

5. The locking device of a five-axis swiveling head spindle head according to claim 1, characterized in that: The clamping frame (5) has an annular connecting groove (13) on its outer surface, and the threaded sleeve (6) has a connecting ring (14) on its outer surface. The connecting ring (14) is movably engaged inside the annular connecting groove (13).

6. The locking device for a five-axis oscillating head spindle as described in claim 1, characterized in that: The connector (4) has a first plane (15) on both sides of its surface, and the inner sidewall of the movable ring (8) has a second plane (16) corresponding to the first plane (15).

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