Friction-reducing vertical turret

By introducing thrust bearings and locking gear plates into the vertical turret, the high resistance problem during tool change in the prior art is solved, and the power demand for servo motors is reduced and the energy saving and miniaturization of the equipment is achieved.

CN110722184BActive Publication Date: 2025-02-28WENLING SANHE CNCEQUIP
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Patent Information

Application Number
CN201911137961.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2019-11-20
Publication Date
2025-02-28
Estimated Expiration
2039-11-20

AI Technical Summary

Technical Problem

When changing tools, the existing vertical turret towers require a larger motor drive due to the large resistance between the contact surface of the box and the base, which affects the energy saving and miniaturization of the equipment.

Method used

By introducing a thrust bearing and locking gear plate design into the vertical turret, the locking gear plate moves upward when unlocked, lifting the thrust bearing, reducing the pressure on the box to the base, thereby reducing the rotational resistance.

Benefits of technology

It reduces the rotational resistance between the box and the base, reduces the power demand for servo motors, extends the service life of the thrust bearings, and promotes the energy saving and miniaturization of the equipment.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The present invention discloses a vertical turret for reducing friction, and relates to the technical field of turrets. The technical scheme thereof mainly includes: comprising a base, a housing and a gearbox arranged on the base, the housing being rotatably arranged on the base, and the locking gear being able to mesh with the movable toothed disc and the fixed toothed disc at the same time; the gearbox being provided with a servo motor and a transmission mechanism, and the servo motor driving the housing to rotate through the transmission mechanism; the housing and the base are connected in rotation through a thrust bearing arranged therebetween, and the thrust bearing supports the weight of the housing through an upper bearing surface; when the locking toothed disc moves upward due to oil entering the unlocking chamber, the locking toothed disc overcomes the gravity of the housing and lifts the thrust bearing upward. The resistance of the vertical turret during rotation is small, and the power demand for the servo motor is reduced, which is beneficial to the energy saving and miniaturization of the equipment; when the vertical turret is not changing the tool, the thrust bearing is subjected to small force, and its service life is long, and the transmission mechanism has a high reduction ratio and good compactness.
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Description

Technical Field

[0001] The invention relates to the technical field of turrets, and in particular to a friction-reducing vertical turret. Background Art

[0002] The turret is also called the tool holder. It is the general name for the automatic tool changer and tool drive device of CNC machine tools. The turret is commonly used in machining centers and is one of the core components of machining centers. Multiple tools can be installed on the turret along the circumference of the cutter head, and the tools can be automatically changed by program control. The vertical turret is a turret whose rotation axis is in the vertical direction when changing tools.

[0003] The existing Chinese invention patent application with application publication number CN102319908A discloses a vertical servo CNC tool holder, which is provided with a box body and a transmission large gear ring, a motor gear, a servo motor, and three groups of double gears arranged in the box body. The servo motor is built into a gear box in the box body and is installed inverted. The output optical axis of the servo motor is connected to the motor gear. The double gears are three groups and an integrated structure. The motor gear is meshed with the first group of double gears, and the third group of double gears is meshed with the transmission large gear ring installed on the inner side of the box body. The second group of double gears is located between the double gears and the double gears. The second group of double gears is meshed with the first group of double gears and the third group of double gears through gears respectively.

[0004] A locking gear plate and a hydraulic cylinder chamber are arranged between the flange and the main shaft. The hydraulic cylinder chamber is located at the upper and lower sides of the locking gear plate. Hydraulic oil is arranged in the hydraulic cylinder chamber. A movable gear plate and a fixed gear plate are arranged at the bottom of the locking gear plate. The movable gear plate is mounted on the fixed gear plate, and the movable gear plate meshes with the fixed gear plate. The box body and the movable gear plate are fastened by bolts, and the movable gear plate cooperates with the inner surface of the box body to support the rotation of the box body. The loosening and locking system controls the travel of the locking gear plate in the cylinder through hydraulic oil to achieve the loosening and locking of the servo tool holder.

[0005] The above-mentioned prior art solution has the following defects: when the hydraulic pressure drives the locking gear disc to separate from the movable gear disc and the fixed gear disc, the box can rotate relative to the base to change the tool. The box is equipped with a tool holder and a tool with a large dead weight. When changing the tool, the top surface of the base still supports a large weight of the box. When the box rotates on the base, there is a large resistance between the contact surfaces of the two, resulting in the box having to use a large power motor to drive the rotation, which is not conducive to energy saving and miniaturization of the equipment. Summary of the invention

[0006] In view of the deficiencies in the prior art, the object of the present invention is to provide a vertical turret with reduced friction, which reduces the power demand for the servo motor and is conducive to energy saving and miniaturization of the equipment.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: a vertical turret for reducing friction, comprising a base, a box body and a gear box arranged on the base, the box body is rotatably arranged on the base, the gear box is fixed to the base, a movable toothed disc and a plurality of tool seats for installing tools are fixed to the box body, a fixed toothed disc is fixed to the base, a hydraulic cavity is arranged between the base and the box body, a locking toothed disc is arranged in the hydraulic cavity for sliding along the vertical direction, the locking toothed disc divides the hydraulic cavity into a locking cavity located at the top and a disengaging cavity located at the bottom, the outer wall of the base is provided with hydraulic oil passages respectively connected with the locking cavity and the disengaging cavity, when the locking toothed disc moves downward, the locking gear can mesh with the movable toothed disc and the fixed toothed disc at the same time; the gear box is provided with a servo motor and a transmission mechanism, and the servo motor drives the box body to rotate through the transmission mechanism;

[0008] The housing and the base are rotationally connected by a thrust bearing arranged therebetween. The thrust bearing supports the weight of the housing through an upper bearing surface, and the locking gear plate is located below the thrust bearing. When oil flows into the unlocking chamber to move the locking gear plate upward, the locking gear plate overcomes the gravity of the housing and lifts the thrust bearing upward.

[0009] Through the above technical solution, when the tool is not changed, most of the weight of the box is borne by the top surface of the base. When the oil enters the unlocking chamber and the oil leaks from the locking chamber to move the locking gear plate upward, the locking gear plate releases the lock on the movable gear plate and the fixed gear plate, and the locking gear plate lifts the thrust bearing. The gravity of the thrust bearing bearing the box increases during the upward movement, and the pressure between the box and the top surface of the base is reduced. When the box rotates relative to the base, the upward movement of the locking gear plate reduces the pressure of the box on the top surface of the base, thereby reducing the rotational resistance between the box and the base. During this process, the rotational resistance of the thrust bearing changes slightly.

[0010] After the box rotates to complete the tool change, oil enters the locking chamber and oil is discharged from the unlocking chamber, causing the locking gear plate to move downward. The locking gear plate engages with the movable gear plate and the fixed gear plate at the same time, limiting the rotation of the box relative to the base. At the same time, most of the weight of the box is borne by the top surface of the base again, and the pressure on the thrust bearing is reduced. When the tool is not changed, the thrust bearing of this turret is less stressed and its life can be extended. The rotation of the box of this vertical turret reduces the power demand for the servo motor and the performance demand for the thrust bearing, which is conducive to energy saving and miniaturization of the equipment.

[0011] Preferably, an elastic gasket is provided between the upper bearing surface of the thrust bearing and the housing, or an elastic gasket is provided between the lower bearing surface of the thrust bearing and the locking gear disk.

[0012] Through the above technical solution, the locking gear plate lifts the thrust bearing, and the thrust bearing compresses the elastic gasket during the upward movement, so that the thrust bearing and the elastic gasket bear a larger weight of the box. The elastic gasket has a deformation space, and as the elastic gasket is further flattened, the force it bears becomes greater. The elastic gasket plays a buffering role to prevent impact noise and structural damage.

[0013] Preferably, the elastic gasket is a corrugated gasket.

[0014] Through the above technical solution, the corrugated gasket, also known as wave gasket and wave spring, can provide sufficient elastic force while saving height space and can also deform under pressure; the corrugated gasket has good shock absorption and elastic properties.

[0015] Preferably, a limit block is fixed on the outer wall of the gear box, and the inner wall of the box body is provided with a limit groove for the limit block to be embedded, and the limit groove is an annular groove; when the box body rotates, the limit block rotates in the limit groove, and the limit block limits the movement of the box body in the vertical direction through the limit groove.

[0016] Through the above technical solution, the limit block limits the movement of the box body in the vertical direction through the limit groove. When the locking gear plate lifts the thrust bearing upward, the box body will not move upward, so dust is not easy to enter between the box body and the base to affect the rotational coordination; on the other hand, there will be no obvious axial sliding between the meshing teeth of the transmission mechanism, and the gear teeth of the transmission mechanism are not easy to be damaged.

[0017] Preferably, a driving ring for driving the locking gear disc to move upward is provided in the unlocking cavity, and the driving ring is located at the upper end of the unlocking cavity. The top wall of the driving ring is used to contact the bottom wall of the locking gear disc, and the driving ring establishes a seal with the unlocking cavity through a sealing ring provided on the outer ring wall and the inner ring wall.

[0018] Through the above technical solution, a driving ring is used to drive the locking toothed disc to move. The shape of the driving ring is simpler than that of the locking toothed disc, and it is easier to establish a seal between the driving ring and the unlocking cavity.

[0019] Preferably, a mounting hole for the servo motor to enter is opened on the bottom surface of the base, and the servo motor is located in the mounting hole.

[0020] Through the above technical solution, the servo motor is as close to the bottom of the base as possible in the vertical direction, so the servo motor has a high space utilization rate for the turret, making the height of the turret smaller and the structure more compact.

[0021] Preferably, the axis of the rotating shaft of the servo motor coincides with the rotation axis of the box.

[0022] Through the above technical solution, the servo motor itself has a large dead weight. The servo motor is set on the rotating axis of the box, so that the center of gravity of the turret is as close to the center as possible, and the stability of the turret is good after installation.

[0023] Preferably, a driving gear is coaxially fixed to the output shaft of the servo motor; the transmission mechanism includes a first reduction mechanism, which includes a fixed toothed disc fixed to the gear box, an output rotating member rotatably arranged in the gear box, and a plurality of planetary gears rotatably arranged on the output rotating member; the fixed toothed disc is an internal toothed disc, the axes of the driving gear, the fixed toothed disc, and the output rotating member are coaxial, the planetary gears are distributed along the circumference of the driving gear, the planetary gears are meshed with the driving gear and the fixed toothed disc at the same time, and the output rotating member is used to drive the box body to rotate.

[0024] Through the above technical solution, the first reduction mechanism is a planetary reduction mechanism, which can produce a larger reduction ratio and reduce the output speed of the servo motor. In addition, the output shaft of the first reduction mechanism is coaxial with the input shaft, which is convenient for setting the subsequent transmission structure.

[0025] Preferably, the transmission mechanism also includes a second reduction mechanism, which includes a first gear coaxially fixed with the output rotating member, a second gear rotatably arranged in the gear box, and a driven gear plate fixed to the box body, the driven gear plate is an internal gear plate, the axis of the driven gear plate coincides with the rotation axis of the box body, the second gear is located between the first gear and the driven gear plate, and the second gear is meshed with the first gear and the driven gear plate at the same time.

[0026] Through the above technical solution, the second reduction mechanism generates a reduction ratio during the transmission process. Since the first reduction mechanism and the second reduction mechanism are connected to form a secondary reduction, the output end of the servo motor rotates slowly after being transmitted to the box, meeting the safety performance requirements when changing tools.

[0027] In summary, the beneficial effects of the present invention compared with the prior art are as follows:

[0028] 1. The vertical turret has less resistance when rotating, which reduces the power demand for the servo motor and is conducive to energy saving and miniaturization of the equipment;

[0029] 2. When the tool is not changed, the thrust bearing of this vertical turret is subjected to less force and has a longer service life;

[0030] 3. The transmission mechanism of this vertical turret has a high reduction ratio and good compactness. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A structural diagram of a friction-reducing vertical turret of an embodiment;

[0032] Figure 2 for Figure 1 A magnified image of point A;

[0033] Figure 3 for Figure 2 CC section view;

[0034] Figure 4 for Figure 1 A magnified view of point B;

[0035] Figure 5 It is a partial view of the embodiment, mainly highlighting the positions of the locking gear plate, thrust bearing, elastic gasket, and various components fixed to the box body.

[0036] In the figure, 1, base; 2, gear box; 3, box body; 31, tool holder; 4, thrust bearing; 5, servo motor; 11, mounting hole; 51, driving gear; 12, bottom cover; 6, first reduction mechanism; 7, second reduction mechanism; 61, fixed gear plate; 62, output rotating member; 63, planetary gear; 631, transmission shaft; 71, first gear; 72, second gear; 73, driven gear plate; 32, moving gear plate; 13, fixed gear plate; 8, hydraulic chamber; 81, locking gear plate; 82, driving ring; 83, locking chamber; 84, unlocking chamber; 85, hydraulic oil channel; 21, limit block; 33, limit groove; 41, elastic gasket. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0038] Reference Figure 1 , a friction-reducing vertical turret disclosed in the present invention, comprises a base 1, a gear box 2 and a box body 3 arranged on the base 1, and the outer wall of the box body 3 is provided with a plurality of tool seats 31 for installing tools along the circumferential direction. The gear box 2 is fixed on the top surface of the base 1, and the box body 3 is sleeved outside the gear box 2. The box body 3 and the base 1 are connected to each other in rotation through a thrust bearing 4 arranged therebetween. The rotation axis of the box body 3 is in the vertical direction, and the thrust bearing 4 supports the weight of the box body 3 through the upper bearing surface. The gear box 2 is provided with a servo motor 5 and a transmission mechanism, and the servo motor 5 drives the box body 3 to rotate through the transmission mechanism.

[0039] The bottom surface of the base 1 is provided with a mounting hole 11 for the servo motor 5 to enter, the mounting hole 11 is located at the center of the base 1, the servo motor 5 is located in the mounting hole 11, the output shaft of the servo motor 5 is vertically upward, and a driving gear 51 is coaxially fixed to the output shaft, and the axis of the servo motor 5 coincides with the axis of rotation of the box body 3. A bottom cover 12 is fixed to the bottom surface of the base 1 by bolts, and the bottom cover 12 closes the mouth of the mounting hole 11.

[0040] Reference Figure 2 and Figure 3The transmission mechanism includes a first reduction mechanism 6 and a second reduction mechanism 7, which are connected to form a two-stage reduction. The first reduction mechanism 6 includes a fixed toothed disc 61 fixed to the gear box 2, an output rotating member 62 rotatably arranged in the gear box 2, and a plurality of planetary gears 63 rotatably arranged on the output rotating member 62. The output rotating member 62 is located above the fixed toothed disc 61, and the output rotating member 62 is connected to the gear box 2 through a bearing; the planetary gears 63 are located below the output rotating member 62, and the planetary gears 63 and the output rotating member 62 are connected to each other by passing through a transmission shaft 631 and setting a bearing. The fixed toothed disc 61 is an internal toothed disc, and the axes of the driving gear 51, the fixed toothed disc 61, and the output rotating member 62 are coaxial. The driving gear 51, the fixed toothed disc 61, and the planetary gears 63 are located at the same horizontal height. The planetary gears 63 are distributed along the circumference of the driving gear 51, and the planetary gears 63 are meshed with the driving gear 51 and the fixed toothed disc 61 at the same time.

[0041] When the servo motor 5 is running, the driving gear 51 rotates at a relatively high speed. Due to the meshing of the gear teeth, the driving gear 51 drives all the planetary gears 63 to rotate. The planetary gears 63 rotate around the axis of the driving gear 51 while rotating. The planetary gears 63 drive the output rotating member 62 to rotate through the transmission shaft 631. The first reduction mechanism 6 generates a reduction ratio while transmitting, reducing the speed output by the servo motor 5. The output rotating member 62 is the power output end of the first reduction mechanism 6, which is used to drive the housing 3 to rotate.

[0042] Reference Figure 1 and Figure 2 The second reduction mechanism 7 includes a first gear 71 fixed coaxially with the output rotating member 62, a second gear 72 rotatably arranged on the gear box 2, and a driven gear plate 73 fixed to the housing 3. The first gear 71 is located above the transmission shaft 631, and the first gear 71, the second gear 72, and the driven gear plate 73 are located at the same height; the second gear 72 is connected to the gear box 2 by a rotating shaft and a bearing. The driven gear plate 73 is an internal gear plate, and the axis of the driven gear plate 73 coincides with the rotation axis of the housing 3. The driven gear plate 73 is fixed to the inner wall of the housing 3 by bolts. The second gear 72 is located between the first gear 71 and the driven gear plate 73, and the second gear 72 is meshed with the first gear 71 and the driven gear plate 73 at the same time.

[0043] When the output rotating member 62 rotates, due to the meshing of the gear teeth, the first gear 71 drives the driven gear plate 73 to rotate through the second gear 72, and the driven gear plate 73 then drives the box body 3 to rotate, and the second reduction mechanism 7 generates a reduction ratio during the transmission process. Since the first reduction mechanism 6 and the second reduction mechanism 7 are connected to form a two-stage reduction, the output end of the servo motor 5 rotates slowly after being transmitted to the box body 3, meeting the safety performance requirements when changing tools.

[0044] Reference Figure 1 and Figure 4 The housing 3 is fixed with a movable toothed disc 32, and the base 1 is fixed with a fixed toothed disc 13. The movable toothed disc 32 and the fixed toothed disc 13 are close to each other and are located at the same height. The axes of the movable toothed disc 32 and the fixed toothed disc 13 coincide with the rotation axis of the housing 3, and the teeth of the movable toothed disc 32 and the fixed toothed disc 13 are both facing upward. A hydraulic chamber 8 is provided between the base 1 and the housing 3. The hydraulic chamber 8 is close to the fixed toothed disc 13. A locking toothed disc 81 and a driving ring 82 are provided in the hydraulic chamber 8 along the vertical direction. The locking toothed disc 81 and the driving ring 82 divide the hydraulic chamber 8 into a locking chamber 83 located above the locking toothed disc 81 and a de-locking chamber 84 located below the driving ring 82. The outer wall of the base 1 is provided with a hydraulic oil passage 85 which is connected with the locking chamber 83 and the de-locking chamber 84 respectively. The teeth of the locking toothed disc 81 face downward and are directly opposite to the movable toothed disc 32 and the fixed toothed disc 13 . The locking toothed disc 81 is preset with a larger tooth width, and the locking toothed disc 81 can mesh with the movable toothed disc 32 and the fixed toothed disc 13 at the same time.

[0045] The locking chamber 83 is sealed between the locking toothed disc 81 and the base 1 through the sealing rings provided at the upper and lower ends, and the driving ring 82 is sealed with the unlocking chamber 84 through the sealing rings provided at the outer ring wall and the inner ring wall. The driving ring 82 is located at the upper end of the unlocking chamber 84, and the top wall of the driving ring 82 is used to contact the bottom wall of the locking toothed disc 81. When the hydraulic oil in the unlocking chamber 84 increases, the driving ring 82 moves upward, and the driving ring 82 drives the locking toothed disc 81 to move upward. After the locking toothed disc 81 moves upward, it is separated from the movable toothed disc 32 and the fixed toothed disc 13, and the housing 3 can rotate relative to the base 1. When the locking chamber 83 is filled with oil and the unlocking chamber 84 is drained of oil to make the locking toothed disc 81 move downward, the locking toothed disc 81 is meshed with the movable toothed disc 32 and the fixed toothed disc 13 at the same time. At this time, the housing 3 cannot rotate relative to the base 1, and the position of the knife seat 31 is reliably fixed.

[0046] The outer wall of the gear box 2 is integrally formed with a limit block 21, which is annular. The inner wall of the housing 3 is provided with a limit groove 33 for the limit block 21 to be embedded. The limit groove 33 is specifically formed between the top wall of the driven gear plate 73 and the inner top wall of the housing 3, and the limit groove 33 is an annular groove. When the housing 3 rotates, the limit block 21 rotates in the limit groove 33, and the groove width of the limit groove 33 is just enough for the limit block 21 to be embedded. The limit block 21 limits the housing 3 to move in the vertical direction through the limit groove 33.

[0047] The locking toothed disc 81 is located below the thrust bearing 4, and the top surface of the locking toothed disc 81 can contact the bottom surface of the thrust bearing 4. An elastic gasket 41 is provided between the upper bearing surface of the thrust bearing 4 and the housing 3, and the elastic gasket 41 is specifically a corrugated gasket. When the locking chamber 84 is filled with oil and the locking chamber 83 is drained of oil to cause the locking toothed disc 81 to move upward, the locking toothed disc 81 lifts the thrust bearing 4, and the thrust bearing 4 compresses the elastic gasket 41 during the upward movement, so that the thrust bearing 4 and the elastic gasket 41 bear the larger weight of the housing 3. In another embodiment, the elastic gasket 41 is located between the lower bearing surface of the thrust bearing 4 and the locking toothed disc 81, and its function is the same as that described above, which will not be described in detail here.

[0048] The higher the oil pressure of the unlocking chamber 84, the higher the stop point of the locking toothed disc 81, the flatter the elastic gasket 41 is pressed, the greater the weight of the box body 3 carried by the thrust bearing 4, and the smaller the pressure between the contact surfaces of the box body 3 and the base 1. As a standard part of the rolling friction form, the thrust bearing 4 has a small rotation resistance and is less affected by the axial pressure.

[0049] Reference Figure 1 and Figure 5 The vertical turret has the following effects: when the box body 3 rotates relative to the base 1, the upward movement of the locking gear plate 81 reduces the pressure of the box body 3 on the top surface of the base 1, thereby reducing the rotation resistance between the box body 3 and the base 1. When the box body 3 rotates, the height of the box body 3 on the base 1 does not rise significantly, and the lifting height is less than 1mm, which comes from the matching clearance of each component, so it is not easy for dust to enter between the box body 3 and the base 1 to affect the rotation matching; on the other hand, there will be no obvious axial sliding between the meshing gear teeth of the transmission mechanism, and the gear teeth of the transmission mechanism are not easy to be damaged.

[0050] After the box body 3 rotates to complete the tool change, the locking chamber 83 enters oil and the unlocking chamber 84 leaks oil, causing the locking toothed disc 81 to move downward, and the locking toothed disc 81 engages with the movable toothed disc 32 and the fixed toothed disc 13 at the same time, limiting the rotation of the box body 3 relative to the base 1. At the same time, most of the weight of the box body 3 is borne by the top surface of the base 1 again, the pressure on the thrust bearing 4 is reduced, and the pressure between the drive ring 82 and the locking toothed disc 81 is reduced or completely separated. When the tool is not changed, the thrust bearing 4 and the drive ring 82 are subjected to less force, and their service life can also be extended. The rotation of the box body 3 of this vertical tool turret reduces the power demand for the servo motor 5 and the performance demand for the thrust bearing 4, which is conducive to energy saving and miniaturization of the equipment.

[0051] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A friction-reducing vertical turret, comprising a base (1), a housing (3) and a gear box (2) arranged on the base (1), wherein the housing (3) is rotatably arranged on the base (1), the gear box (2) is fixed to the base (1), a movable toothed disc (32) and a plurality of tool seats (31) for installing tools are fixed to the housing (3), a fixed toothed disc (13) is fixed to the base (1), a hydraulic chamber (8) is arranged between the base (1) and the housing (3), a locking toothed disc (81) is slidably arranged in the hydraulic chamber (8) along the vertical direction, and the locking toothed disc (81) is arranged to slide in the hydraulic chamber (8), and the locking toothed disc (82) is arranged to slide in the hydraulic chamber (8) along the vertical direction. The locking toothed disc (81) divides the hydraulic chamber (8) into a locking chamber (83) located at the top and a unlocking chamber (84) located at the bottom. The outer wall of the base (1) is provided with a hydraulic oil passage (85) which is respectively connected with the locking chamber (83) and the unlocking chamber (84). When the locking toothed disc (81) moves downward, the locking toothed disc (81) can mesh with the movable toothed disc (32) and the fixed toothed disc (13) at the same time. The gear box (2) is provided with a servo motor (5) and a transmission mechanism. The servo motor (5) drives the box body (3) to rotate through the transmission mechanism. The invention is characterized in that: The housing (3) and the base (1) are connected in rotation via a thrust bearing (4) disposed therebetween; the thrust bearing (4) supports the weight of the housing (3) via an upper bearing surface; and the locking toothed disc (81) is located below the thrust bearing (4); when oil flows into the unlocking chamber (84) to cause the locking toothed disc (81) to move upward, the locking toothed disc (81) overcomes the gravity of the housing (3) and lifts the thrust bearing (4) upward; An elastic gasket (41) is provided between the upper bearing surface of the thrust bearing (4) and the box body (3), or an elastic gasket (41) is provided between the lower bearing surface of the thrust bearing (4) and the locking gear disk (81); The bottom surface of the base (1) is provided with a mounting hole (11) for the servo motor (5) to enter, and the servo motor (5) is located in the mounting hole (11).

2. The friction-reducing vertical turret according to claim 1, characterized in that: The elastic gasket (41) is a corrugated gasket.

3. The friction-reducing vertical turret according to claim 1, characterized in that: A limit block (21) is fixed on the outer wall of the gear box (2), and a limit groove (33) is provided on the inner wall of the box body (3) for the limit block (21) to be embedded, and the limit groove (33) is an annular groove; when the box body (3) rotates, the limit block (21) rotates in the limit groove (33), and the limit block (21) limits the movement of the box body (3) in the vertical direction through the limit groove (33).

4. The friction-reducing vertical turret according to claim 1, characterized in that: A driving ring (82) for driving the locking toothed disc (81) to move upward is arranged in the unlocking cavity (84); the driving ring (82) is located at the upper end of the unlocking cavity (84); the top wall of the driving ring (82) is used to contact the bottom wall of the locking toothed disc (81); the driving ring (82) establishes a seal with the unlocking cavity (84) via sealing rings arranged on the outer ring wall and the inner ring wall.

5. The friction-reducing vertical turret according to claim 1, characterized in that: The axis of the rotating shaft of the servo motor (5) coincides with the rotation axis of the box body (3).

6. The friction-reducing vertical turret according to claim 1, characterized in that: The output shaft of the servo motor (5) is coaxially fixed with a driving gear (51); the transmission mechanism comprises a first reduction mechanism (6), the first reduction mechanism (6) comprising a fixed toothed disc (61) fixed to the gear box (2), an output rotating member (62) rotatably arranged in the gear box (2), and a plurality of planetary gears (63) rotatably arranged on the output rotating member (62); the fixed toothed disc (61) is an internal toothed disc, the axes of the driving gear (51), the fixed toothed disc (61) and the output rotating member (62) are coaxial, the planetary gears (63) are distributed along the circumference of the driving gear (51), the planetary gears (63) are meshed with the driving gear (51) and the fixed toothed disc (61) at the same time, and the output rotating member (62) is used to drive the housing (3) to rotate.

7. The friction-reducing vertical turret according to claim 6, characterized in that: The transmission mechanism further comprises a second reduction mechanism (7), the second reduction mechanism (7) comprising a first gear (71) fixed coaxially with the output rotating member (62), a second gear (72) rotatably arranged on the gear box (2), and a driven gear plate (73) fixed to the housing (3), the driven gear plate (73) being an internal gear plate, the axis of the driven gear plate (73) coinciding with the rotation axis of the housing (3), the second gear (72) being located between the first gear (71) and the driven gear plate (73), and the second gear (72) being meshed with the first gear (71) and the driven gear plate (73) at the same time.

Citation Information

Patent Citations

  • Vertical servo numerical control turret

    CN102319908A

  • Vertical tool turret capable of reducing friction

    CN211161974U