Vertical-horizontal conversion head swinging device

Abstract

The invention relates to a vertical-horizontal conversion swing head device which comprises a swing head and a main box body, the swing head is rotationally installed at the head end of the main box body, a main core shaft is installed in the main box body, the swing head is fixedly installed at the head end of the main core shaft, and the main core shaft is sleeved with a movable sleeve capable of axially displacing relative to the main core shaft. A locking seat is fixed in the main box body on the periphery of the movable sleeve, and a locking mechanism is arranged between the movable sleeve and the locking seat; a driving disc for driving the movable sleeve to axially move is arranged in the main box body on the periphery of the movable sleeve and between the tail end part of the movable sleeve and the locking seat; and a first brake mechanism which can axially move and is matched with the driving disc sleeves the tail end part of the movable sleeve. The device can achieve the effects of being simple and compact in structure, high in precision and easy to install and maintain.

Description

Technical Field

[0001] The present application relates to the field of numerically controlled machine tools, and in particular to a vertical-horizontal conversion swing head device. Background Art

[0002] In the field of CNC machine tools, the use of vertical and horizontal conversion swing heads is a more advanced control method, which can improve the efficiency of the entire machining process.

[0003] At present, there is a hollow core shaft direct-driven vertical-horizontal conversion swing head structure with a Chinese patent publication number of CN112605671A. The hollow core shaft is used as the swing shaft. The vertical and horizontal positions are converted by adopting a radial and thrust combined rolling bearing and the main shaft as the swing head. Compared with the traditional radial bearing and thrust bearing designed separately, the design is simple, the structure is more compact, and the installation and maintenance are relatively convenient. In addition, the torque motor direct-driven structure is adopted, and the positioning accuracy and repeat positioning accuracy are relatively high. The braking control of the swing shaft is facilitated by setting the structure of the brake sleeve and the brake fixing part. When the annular oil cavity of the brake sleeve is passed into the high-pressure fluid medium, the brake sleeve is deformed and clamps the outer circle of the hollow core shaft, thereby realizing the braking of the swing shaft.

[0004] Although the inventor believes that directly using a torque motor direct drive method can improve the positioning accuracy, the precision of the equipment will also increase accordingly, which will on the one hand lead to increased costs, and on the other hand will also lead to a corresponding increase in the failure rate of the equipment. For this reason, the inventor provides another vertical-horizontal conversion swing head device with a simple and compact structure, high precision, and easy installation and maintenance. Summary of the invention

[0005] In order to achieve the effects of simple and compact structure, high precision, and easy installation and maintenance.

[0006] The present application provides a vertical-horizontal conversion head swing device, which adopts the following technical solution: A vertical-horizontal conversion swing head device comprises a swing head and a main box body, wherein the swing head is rotatably mounted on the head end of the main box body, a main core shaft is mounted in the main box body, the swing head is fixedly mounted on the head end of the main core shaft, a movable sleeve which can be axially displaced relative to the main core shaft is sleeved on the main core shaft, a locking seat is fixed in the main box body outside the movable sleeve, and a locking mechanism is arranged between the movable sleeve and the locking seat; a driving disk which drives the movable sleeve to be axially displaced is arranged in the main box body outside the movable sleeve and between the rear end of the movable sleeve and the locking seat, and a first brake mechanism which can be axially displaced and cooperates with the driving disk is sleeved on the rear end of the movable sleeve.

[0007] In some embodiments, the locking mechanism includes a locking ring and a locking end head. The locking ring is fixedly sleeved on the head end of the movable sleeve, and the locking end head is arranged on the end face of the locking seat facing the locking ring. The locking end head and the locking ring are respectively provided with locking teeth that can cooperate with each other to lock on the opposite end faces.

[0008] In some embodiments, an auxiliary rotation mechanism is arranged between the movable sleeve and the swing head, the auxiliary rotation mechanism includes a first guide locking pin, at least one first guide groove is arranged along the circumference on the outer ring wall of the locking ring, the first guide locking pin is arranged on the swing head, and the number and position of the first guide locking pin are adapted to the first guide groove.

[0009] In some embodiments, the structure of the driving disk driving the movable sleeve to axially displace is as follows: an external thread is provided on the side of the movable sleeve close to the locking seat, and an internal threaded sleeve is provided on the end of the driving disk facing the locking seat, and the internal threaded sleeve is adapted to the external thread.

[0010] In some embodiments, a worm gear is sleeved on the driving disc, and a worm that meshes with the worm gear is installed in the main housing.

[0011] In some embodiments, the first brake mechanism includes a first brake disc and a shifting arm mounted on the rear end of the movable sleeve, a shifting fork block is rotatably mounted on the end of the shifting arm close to the first brake disc, and a shifting fork groove is provided on the shifting fork block for the first brake disc to be inserted into, and the other end of the shifting arm is rotatably mounted in the main housing and driven by a hydraulic cylinder or a pneumatic cylinder.

[0012] In some embodiments, a brake groove is provided at the end of the driving disc facing the first brake disc, and a brake end seat matched with the brake groove is provided at the end surface of the first brake disc facing the driving disc.

[0013] In some embodiments, the rear end portion of the movable sleeve is provided with at least one second guide groove along the circumference, and the inner ring of the first brake disc is provided with second guide locking pins matching the number and position of the second guide grooves.

[0014] In some embodiments, the tail end of the main spindle extends out of the movable sleeve, and a second brake mechanism is disposed at the tail end of the main spindle.

[0015] In some embodiments, the second brake mechanism includes a second brake disc disposed at the rear end of the main spindle and a brake installed in the main housing, and the brake cooperates with the second brake disc for braking.

[0016] To sum up, the present application includes at least one of the following beneficial technical effects: by designing the matching structure inside the main box body as a mainly mechanical matching structure, on the one hand, the advantages of simple and compact structure, high precision, and easy installation and maintenance can be achieved; on the other hand, the manufacturing cost of the product is greatly reduced, and the failure rate of parts is relatively low, and the operation of the equipment is more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a vertical-horizontal conversion swing head device in an embodiment of the present application.

[0018] Figure 2 It is a partial cross-sectional structural schematic diagram of a vertical-horizontal conversion swing head device in an embodiment of the present application.

[0019] Figure 3 It is a schematic diagram of the structure of the locking ring in the embodiment of the present application.

[0020] Figure 4 It is a schematic diagram of the structure of the locking seat and the locking end in the embodiment of the present application.

[0021] Figure 5 It is a schematic diagram used to illustrate the first guide lock pin installation structure in an embodiment of the present application.

[0022] Figure 6 It is a structural schematic diagram used to display the first brake mechanism and the second brake mechanism in the embodiment of the present application.

[0023] Figure 7 It is a schematic diagram for illustrating the matching structure of the first brake disc and the movable sleeve in the embodiment of the present application.

[0024] Explanation of the reference numerals in the accompanying drawings: 1. Swing head; 2. Main housing; 3. Main spindle; 4. Moving sleeve; 5. Locking seat; 6. Locking ring; 7. Locking end; 8. Positioning tooth; 9. First guide locking pin; 10. First guide groove; 11. Driving disk; 12. External thread; 13. Internally threaded sleeve; 14. Worm gear; 15. Worm; 16. First brake disc; 17. Sliding arm; 18. Fork block; 19. Brake groove; 20. Brake end seat; 21. Second guide groove; 22. Second guide locking pin; 23. Second brake disc; 24. Brake. DETAILED DESCRIPTION

[0025] The following is combined with Figures 1 to 7 This application is described in further detail.

[0026] The present application embodiment discloses a vertical-horizontal conversion swing head device, referring to Figure 1 , 2, including a swing head 1 and a main box body 2, the swing head 1 is rotatably mounted on the head end of the main box body 2, a main spindle 3 is mounted in the main box body 2, the main spindle 3 is generally hollow, and the swing head 1 is fixedly mounted on the head end of the main spindle 3, a movable sleeve 4 is sleeved on the main spindle 3 and can be axially displaced relative to the main spindle 3, a locking seat 5 is fixed in the main box body 2 outside the movable sleeve 4, and a locking mechanism is arranged between the movable sleeve 4 and the locking seat 5; refer to Figure 3 , 4 The locking mechanism includes a locking ring 6 and a locking end head 7. The locking ring 6 is fixedly sleeved on the head end of the movable sleeve 4. The locking end head 7 is arranged on the end face of the locking seat 5 facing the locking ring 6. The locking end head 7 and the opposite end faces of the locking ring 6 are respectively provided with positioning teeth 8 that can cooperate with each other for locking. That is, the locking end head 7 and the locking ring 6 are both provided with a plurality of positioning teeth 8 along the circumference, and the positioning teeth 8 on the opposite end faces are formed between adjacent positioning teeth 8. For example, the positioning teeth 8 matching the position on the locking ring 6 can be inserted between two adjacent positioning teeth 8 on the end face of the locking end head 7. After being inserted, a mutual locking state is formed between the locking end head 7 and the locking ring 6. After being disengaged, an unlocking state is naturally formed. The locking mechanism here can also be locked by inserting a pin shaft and a pin hole into each other.

[0027] In order to be able to drive the swing head 1 to rotate more stably, an auxiliary rotation mechanism is provided between the movable sleeve 4 and the swing head 1 in this embodiment. Figure 5 The auxiliary rotation mechanism includes a first guide locking pin 9, and at least one first guide groove 10 is arranged on the outer ring wall of the locking ring 6 along the circumference. The first guide locking pin 9 is arranged on the swing head 1, and the number and position of the first guide locking pin 9 and the first guide groove 10 are adapted. Under normal circumstances, the first guide locking pin 9 can be directly fixed in the swing head 1 by threaded connection or welding, and the first guide locking pin 9 is generally always kept in the first guide groove 10 for relative movement, which can ensure better fit between parts and prevent some unnecessary collision and damage between parts. After the locking end 7 and the locking ring 6 are in contact and locked state, due to the fit between the first guide locking pin 9 and the first guide groove 10, the movable sleeve 4 can provide a rotational force to the swing head 1 when the main spindle 3 rotates.

[0028] In the present embodiment, a driving disk 11 for driving the axial displacement of the moving sleeve 4 is arranged inside the main housing 2 outside the moving sleeve 4 and between the rear end of the moving sleeve 4 and the locking seat 5. The structure of the driving disk 11 driving the axial displacement of the moving sleeve 4 is as follows: an external thread 12 is arranged on the side of the moving sleeve 4 close to the locking seat 5, and an internal threaded sleeve 13 is arranged on the end of the driving disk 11 facing the locking seat 5. The internal threaded sleeve 13 is adapted to the external thread 12. Generally, the internal threaded sleeve 13 is installed in the main housing 2 through a bearing, which can reduce the friction between the internal threaded sleeve 13 and the main housing 2 during rotation, making the rotation smoother and more reliable. In addition, in order to drive the driving disk 11 to rotate, a worm gear 14 can be sleeved on the driving disk 11, and a worm 15 meshing with the worm gear 14 is installed in the main housing 2.

[0029] In addition, in order to enable the movable sleeve 4 and the driving disk 11 to rotate synchronously after the locking state of the locking mechanism is released, a first brake mechanism that can axially displace and cooperate with the driving disk 11 is sleeved on the rear end of the movable sleeve 4; Figure 6 The first brake mechanism includes a first brake disc 16 and a toggle arm 17 which are sleeved on the rear end of the movable sleeve 4. A fork block 18 is rotatably installed on the end of the toggle arm 17 close to the first brake disc 16. The fork block 18 is provided with a fork groove for the first brake disc 16 to be inserted into. The other end of the toggle arm 17 is rotatably installed in the main housing 2 and driven by a hydraulic cylinder or a pneumatic cylinder. That is, after the locking state of the locking mechanism is released, the hydraulic cylinder or the cylinder drives the toggle arm 17 to swing, so that it drives the fork block 18 to move toward the driving disc 11 until the first brake disc 16 is tightly pressed against the driving disc 11. At this time, when the worm 15 drives the worm wheel 14 to rotate, the driving disc 11 will drive the first brake disc 16 to rotate synchronously, thereby causing the movable sleeve 4 to rotate synchronously as well.

[0030] In order to reduce unnecessary friction loss between the driving disc 11 and the first brake disc 16, a brake groove 19 can be provided at the end of the driving disc 11 facing the first brake disc 16, and a brake end seat 20 matching the brake groove 19 can be provided at the end surface of the first brake disc 16 facing the driving disc 11, and the brake groove 19 and the brake end seat 20 can be made of a relatively wear-resistant material; in addition, referring to Figure 7 In order to enable the first brake disc 16 to move axially and rotate synchronously with the movable sleeve 4, at least one second guide groove 21 can be circumferentially arranged at the rear end of the movable sleeve 4, and the inner ring of the first brake disc 16 is provided with second guide locking pins 22 that are matched with the number and position of the second guide grooves 21. The second guide locking pins 22 and the second guide grooves 21 can realize relative displacement of the axis, while being locked with each other in the radial direction.

[0031] In order to ensure that the swing will not occur autonomously due to the influence of external forces such as gravity when the locking mechanism is in the released state, the tail end of the main core shaft 3 in this embodiment extends out of the movable sleeve 4, and the tail end of the main core shaft 3 is provided with a second brake mechanism. The second brake mechanism includes a second brake disc 23 arranged at the tail end of the main core shaft 3 and a brake 24 installed in the main box body 2. The brake 24 cooperates with the second brake disc 23 for braking. The brake 24 is a traditional brake brake 24, which can be purchased on the market.

[0032] The implementation principle of a vertical-horizontal conversion swing head 1 device disclosed in an embodiment of the present application is: assuming that the locking mechanism is in a locked state in the initial state, when the swing head 1 needs to be converted, the worm gear 14 can be driven by the worm 15 to drive the movable sleeve 4 to move in the direction of the swing head 1 until the locking mechanism is released from the locked state, and the second brake mechanism can intervene when the locked state needs to be released, or it can be in a locked state all the time. After the locking mechanism is released from the locked state, the hydraulic cylinder or the air cylinder drives the shifting arm 17 to control the shifting fork block 18 to drive the first brake disc 16 and the driving disc 11 to form a mutual locking state or a braking state. At this time, the second brake mechanism can release the locking or braking state, and the rotation of the worm gear 14 will drive the driving disc 11 and the first brake disc 16 to rotate synchronously, thereby causing the movable sleeve 4 to rotate, and finally causing the swing head 1 to rotate.

[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vertical-horizontal conversion swing head device, comprising a swing head (1) and a main box (2), wherein the swing head (1) is rotatably mounted on the front end of the main box (2), and characterized in that: A main core shaft (3) is installed in the main housing (2), a swing head (1) is fixedly installed on the head end of the main core shaft (3), a movable sleeve (4) which can be axially displaced relative to the main core shaft (3) is sleeved on the main core shaft (3), a locking seat (5) is fixed in the main housing (2) outside the movable sleeve (4), and a locking mechanism is arranged between the movable sleeve (4) and the locking seat (5); a driving disk (11) for driving the movable sleeve (4) to axially displace is arranged in the main housing (2) outside the movable sleeve (4) and between the rear end of the movable sleeve (4) and the locking seat (5), and a first brake mechanism which can be axially displaced and cooperates with the driving disk (11) is sleeved on the rear end of the movable sleeve (4).

2. The vertical-horizontal conversion head swing device according to claim 1, characterized in that: The locking mechanism comprises a locking ring (6) and a locking end head (7); the locking ring (6) is fixedly sleeved on the head end of the movable sleeve (4); the locking end head (7) is arranged on the end surface of the locking seat (5) facing the locking ring (6); and the locking end head (7) and the locking ring (6) are respectively provided with locking teeth (8) that can cooperate with each other to lock on the opposite end surfaces.

3. The vertical-horizontal conversion head swing device according to claim 2, characterized in that: An auxiliary rotation mechanism is provided between the movable sleeve (4) and the swing head (1), the auxiliary rotation mechanism comprising a first guide lock pin (9), at least one first guide groove (10) being provided along the circumference on the outer ring wall of the locking ring (6), the first guide lock pin (9) being provided on the swing head (1), and the number and position of the first guide lock pin (9) and the first guide groove (10) being matched.

4. The vertical-horizontal conversion swing head device according to claim 1, characterized in that: The structure of the driving disk (11) driving the movable sleeve (4) to axially displace is as follows: an external thread (12) is provided on a side of the movable sleeve (4) close to the locking seat (5), and an internal thread sleeve (13) is provided on an end of the driving disk (11) facing the locking seat (5), and the internal thread sleeve (13) is adapted to the external thread (12).

5. The vertical-horizontal conversion swing head device according to claim 4, characterized in that: A worm wheel (14) is sleeved on the driving disc (11), and a worm (15) meshing with the worm wheel (14) is installed in the main housing (2).

6. The vertical-horizontal conversion head swing device according to claim 1, characterized in that: The first brake mechanism comprises a first brake disc (16) sleeved on the rear end of the movable sleeve (4), and a shifting arm (17); a shifting fork block (18) is rotatably mounted on the end of the shifting arm (17) close to the first brake disc (16); a shifting fork groove is provided on the shifting fork block (18) for the first brake disc (16) to be inserted into; the other end of the shifting arm (17) is rotatably mounted in the main housing (2) and driven by a hydraulic cylinder or a pneumatic cylinder.

7. The vertical-horizontal conversion head swing device according to claim 6, characterized in that: The end of the driving disc (11) facing the first brake disc (16) is provided with a brake groove (19), and the end surface of the first brake disc (16) facing the driving disc (11) is provided with a brake end seat (20) matched with the brake groove (19).

8. The vertical-horizontal conversion head swing device according to claim 6, characterized in that: The rear end of the movable sleeve (4) is provided with at least one second guide groove (21) along the circumference, and the inner ring of the first brake disc (16) is provided with second guide locking pins (22) matching the number and position of the second guide grooves (21).

9. The vertical-horizontal conversion head swing device according to claim 1, characterized in that: The tail end of the main core shaft (3) extends out of the movable sleeve (4), and a second brake mechanism is provided at the tail end of the main core shaft (3).

10. The vertical-horizontal conversion swing head device according to claim 9, characterized in that: The second brake mechanism comprises a second brake disc (23) arranged at the rear end of the main spindle (3) and a brake (24) installed in the main housing (2), the brake (24) and the second brake disc (23) cooperate for braking.

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