Rotation driving unit of turnover type turn-milling turntable

Abstract

The utility model discloses a turn-over type turn-milling rotary table rotation driving unit, which relates to the technical field of machine tool rotary table equipment, and comprises a speed reducer base, a rotary table is rotatably arranged at the top of the speed reducer base, a driving gear ring is fixedly arranged on the rotary table, and the driving gear ring is in transmission connection with an even number of driving gears. Each driving gear is in transmission connection with a motor through a speed reducing mechanism, and the driving gears, the speed reducing mechanisms and the motors are arranged in the speed reducer base. The rotary table is fixedly provided with a feedback shaft, and the speed reducer base is provided with an encoder matched with the feedback shaft; and a turnover mechanism is arranged between the speed reducer base and the base. Therefore, by utilizing a motor anti-backlash technology, an even number of rotary driving units are arranged to control the rotary motion of the rotary table, so that the rotary table is suitable for heavy load, and the rotary precision is improved at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to lathe rotary table equipment technical field, concretely relates to a kind of turnover type turning and milling rotary table rotation drive unit. BACKGROUND

[0002] In order to adapt to the development of large-scale mechanical equipment, the development trend of numerical control machine tool is mainly large and heavy, the larger the volume of machine tool, the longer the stroke, the higher the requirement for transmission accuracy. For example, the rotary table drive of numerical control machine tool, the driving force of rotary table comes from motor, motor is reduced after reduction gear, and the speed of rotary table is controlled by driving gear ring. There are many types of reduction gears, including planetary reducer, RV cycloid reducer, harmonic reducer, etc., which all play the role of matching speed and transmitting torque, and the driving gear ring adopts zero-clearance precision reducer, which is the highest accuracy in theory.

[0003] Limited by the transmission characteristics of gear, in order to avoid the phenomenon of "lock" of two relative gears when driving gear ring, there must be a sliding gap (i.e. transmission gap) between reduction gear and gear ring, so no matter what manufacturing process or structure technology the manufacturer uses, it is impossible to eliminate the transmission gap.

[0004] In order to improve the transmission accuracy, the usual way is to reduce the transmission gap, some manufacturers apply a certain pre-tightening force to the reduction gear, or use disc spring to keep a certain compression force all the time, but when the transmitted torque is greater than the compression force, the reduction gear will increase the transmission gap due to the torque deformation. The positive and negative gaps of the precision planetary transmission reducer used in numerical control machine tool are generally between 1-5 arc minutes. Higher precision reducers are extremely expensive, usually imported, and the maintenance cost is extremely high, so it is difficult to popularize. Some precision drive equipment can also use torque motor direct drive technology, i.e. using torque motor to directly drive the rotary table rotation. Torque motor has high accuracy and convenient control, but it is generally only suitable for small machine tool rotary table (such as cradle type), and torque motor direct drive technology is currently used in cradle rotary table. When machining, the angle of rotary table can be adjusted at any time, and the included angle between workpiece and machining tool can be changed. Limited by the huge inertia generated by the rotation of large workpiece, the maximum load capacity of cradle rotary table is about 1 ton, so it is only suitable for machining small workpiece. For some large rotary table, torque motor has poor load capacity and rigidity, which cannot meet the demand of high load and high rigidity torque output.

[0005] Turning and milling combined machine tool is the development trend of existing numerical control machine tool, and is one of the most popular machining processes in the field of mechanical machining. Turning and milling combined machine tool integrates turning, milling, boring and other processes, which can complete the machining of parts as much as possible with one clamping, ensure machining accuracy, and rotary table is an extremely important part of turning and milling combined machine tool.

[0006] In order to realize multi-angle machining, part of the rotary table will be provided with a rotating shaft, and a torque motor direct drive is mainly used, such as a cradle rotary table. During machining, the angle of the rotary table can be adjusted at any time, thereby changing the included angle between the workpiece and the machining tool. Limited by the huge inertia generated by the rotation of the large workpiece, the maximum bearing capacity of the cradle rotary table is about 1 ton, so it is only suitable for machining small workpieces. If a large rotary table is used, the support demand of large workpieces can be met. During turning, a high-power main drive motor must be used to drive, so as to meet the speed requirement of the rotary table. The accuracy requirement of indexing rotation is very high (such as zero point several rotations), and a small power indexing rotation motor (i.e. permanent magnet servo motor) is required. The power and rotation accuracy of the two types of motors are very different, and the rotary table cannot be driven at the same time. When it is necessary to switch to the turning function, it must be ensured that the driving pinion of the C-axis transmission device and the large gear ring of the workbench are in a disengaged state. Otherwise, the C-axis driving device will be damaged, causing machine tool accidents. In order to ensure the cooperative work of the two motors, the existing machine tool sets a C-axis transmission device to realize the switching between the two powers. The C-axis transmission device is prior art, and the patent document with the patent application publication number CN109571051A can be referred to for more detailed description.

[0007] Due to the addition of the C-axis transmission device, the volume of the entire rotary table is expanded again, and the angle of the rotary table cannot be adjusted. For part of the medium and large workpieces, such as part of the propeller, even if a dynamic column vertical lathe compound machine tool or a gantry type numerical control machine tool is used, when machining the curved surface of the workpiece side, the workpiece still needs to be adjusted at a certain angle before machining can be completed. The existing equipment needs to be clamped multiple times, and the installation error caused by multiple clamping is difficult to eliminate, so part of the workpieces cannot meet the design requirements after machining. Practical new type content

[0008] In order to overcome the above defects, the purpose of the utility model is to provide a rotary drive unit of a turnover type turning and milling rotary table, which uses motor anti-backlash technology to set an even number of rotary drive units to control the rotary motion of the rotary table, which is suitable for heavy load and improves the rotation accuracy.

[0009] In order to achieve the above object, the utility model provides a kind of turnover type car milling rotary table rotary drive unit, including reduction gear base, the top of reduction gear base is rotatably installed with rotary table, the rotary table is fixed with driving gear ring, the driving gear ring is connected with even number of driving gears, each driving gear is respectively connected with a motor by a reduction mechanism, the driving gear, the reduction mechanism and the motor are arranged in the inside of reduction gear base;The rotary table is fixed with feedback shaft, the reduction gear base is provided with the encoder matched with the feedback shaft;Base, reduction gear base and base are equipped with turnover mechanism.

[0010] Preferably, the turnover mechanism includes a lifting cylinder, one side of the reduction gear base is hinged to the base through a first rotating shaft, and the lifting cylinder is hinged between the reduction gear base and the base; one end of the first rotating shaft is provided with a turnover servo motor with an encoder.

[0011] Preferably, the locking mechanism includes a locking groove, a locking block and a locking cylinder, the locking groove is opened in the base, the locking cylinder is arranged between the locking block and the base, the locking cylinder drives the locking block to slide in the locking groove, and the locking of the reduction gear base and the base is realized; the outer end surface of the locking block and the inner end surface of the locking groove are wedge-shaped.

[0012] Preferably, the turnover mechanism includes a lifting cylinder and a push-pull cylinder, the lifting cylinder is hinged between the reduction gear base and the base, the reduction gear base is hinged with a connecting seat through a second rotating shaft, the push-pull cylinder is hinged between the connecting seat and the base, the base is fixedly provided with a guide rail, the connecting seat is slidingly arranged on the guide rail, and the lifting cylinder is a multi-layer cylinder.

[0013] Preferably, the turnover mechanism includes a lifting cylinder and a push-pull cylinder, the lifting cylinder is hinged between the reduction gear base and the base, the reduction gear base is hinged with a connecting seat through a third rotating shaft, the push-pull cylinder is hinged between the connecting seat and the base, the base is fixedly provided with a rolling way, the third rotating shaft is provided with a roller, the roller is constrained in the rolling way, and the lifting cylinder is a multi-layer cylinder.

[0014] Preferably, the reduction mechanism is a planetary reduction mechanism; the planetary reduction mechanism includes a housing, a sun gear, a planet carrier, a planet gear and a planet carrier output shaft, the housing is fixedly connected with the reduction gear base, the housing is provided with an inner ring gear, the sun gear is drivingly connected with a motor shaft, the planet gear is rotatably installed on the planet carrier, and the sun gear is engaged with the inner ring gear through the planet gear; the planet carrier output shaft is fixedly connected with the planet carrier, and the planet carrier output shaft is drivingly connected with the driving gear.

[0015] Preferably, a two-stage speed reduction mechanism is arranged between the sun gear and the motor, the two-stage speed reduction mechanism comprises a box body, a driving input shaft, an intermediate shaft and a driving output shaft are rotatably arranged in the box body, the driving output shaft is coaxially arranged with the driving input shaft, and an output end of the driving output shaft is in transmission connection with the sun gear; the driving input shaft is in transmission connection with the motor, the driving input shaft is provided with a driving gear, the intermediate shaft is provided with an intermediate shaft small gear and an intermediate shaft large gear, and a two-shaft transmission gear is slidably arranged on the driving output shaft and selectively meshed with the driving gear or the intermediate shaft small gear.

[0016] Preferably, the speed reducer base is provided with a mounting base plate, the speed reduction mechanism is mounted on the mounting base plate, a closed cavity is formed between the mounting base plate and the rotary table, the mounting base plate is provided with a central hole, the feedback shaft is arranged in the central hole and corresponds to the encoder, and the driving gear ring is an inner gear ring or an outer gear ring.

[0017] Preferably, a first sealing device is arranged between the rotary table and the speed reducer base, and a second sealing device is arranged between the feedback shaft and the central hole.

[0018] After the above technical scheme is adopted, the beneficial technical effects achieved by the utility model are as follows:

[0019] 1. By utilizing the anti-backlash principle of double motors, a plurality of rotary driving units are arranged, and an encoder is arranged at the bottom of the rotary table, which cooperates with a plurality of motors to ensure that at least one driving gear generates a tension force with the driving gear ring of the rotary table when the rotary table works, so that the situation that the output torque of the motor is zero at the same time is never occurred, and under the action of the torque, the movement gap of the main gear cannot exist, thereby ensuring the stability of the output.

[0020] 2. Since the rotary table base is hollow, the power conversion box and the driving part can be arranged inside the rotary table of the machine tool according to needs, which can reduce the occupied volume of the whole set of equipment, and after the overturning mechanism is arranged, the overturning of the speed reducer base can be realized, the quick conversion of the vertical machine and the horizontal machine is realized, the use range of the original rotary table is expanded, especially the vertical rotary table can be quickly converted into a horizontal rotary table, which is suitable for machining of slender parts with multiple complex curved surfaces, and in the above conversion process, the workpiece does not need to be clamped and positioned again, so that the clamping times of the workpiece are reduced, the original error caused by clamping and positioning is avoided, and the machining precision of the workpiece is improved.

[0021] 3. Since the lifting oil cylinder and the push-pull oil cylinder are used as the overturning mechanism, the overturning servo motor with the encoder installed at one end of the rotating shaft can realize higher precision of the rotating angle, and the temporary fixing is realized through the locking mechanism, so that the utility model is suitable for heavy rotary tables, and the stability is stronger in the machining, and the utility model is especially suitable for machining large and heavy workpieces.

[0022] 4. Since the servo motor is connected with the driving gear through the planetary reduction mechanism, the planetary reduction mechanism can reduce the output rotating speed of the servo motor, and a plurality of servo motors of the same type are used to drive the pinion, so that the planetary reduction mechanism can also increase the output torque, and thus the utility model is more suitable for heavy load, and is especially suitable for driving the rotary table with large size. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the internal schematic view of the planetary reduction mechanism of the utility model;

[0024] Figure 2 is the use state (internal gear ring) reference schematic view of the two-stage reduction mechanism of the utility model;

[0025] Figure 3 is the explosion state reference schematic view of the planetary reduction mechanism of the utility model;

[0026] Figure 4 is the use state (external gear ring) reference schematic view of the two-stage reduction mechanism of the utility model;

[0027] Figure 5 is the use state reference schematic view of the utility model in which one gear is used as the reduction mechanism;

[0028] Figure 6 is the use state reference schematic view of the utility model in which the reduction machine base is rotated by 90°;

[0029] Figure 7 is Figure 6 the use state reference schematic view of the reduction machine base in the horizontal state of the utility model;

[0030] Figure 8 is the use state reference schematic view of the utility model in which another embodiment is used to rotate the reduction machine base by 90°;

[0031] Figure 9 is the state reference schematic view of the utility model in which the reduction machine base is rotated by 45°;

[0032] Figure 10 is the use state reference schematic view of the utility model in which the reduction machine base uses the roller;

[0033] in the drawings,

[0034] 1, speed reducer base; 11, feedback shaft; 12, mounting base plate; 13, first rotating shaft; 14, second rotating shaft; 15, third rotating shaft;

[0035] 2, rotary table; 21, driving gear ring; 22, encoder; 23, driving gear;

[0036] 3, planetary reducer mechanism; 31, motor shaft; 311, sun gear; 32, planetary support; 321, planetary support output shaft; 322, planetary gear; 33, intermediate shaft; 331, intermediate shaft pinion; 332, intermediate shaft gear; 34, main power output shaft; 341, two-axis transmission gear; 35, housing; 351, inner gear ring; 36, box body; 37, main power input shaft; 371, main power gear;

[0037] 4, motor;

[0038] 5, turnover mechanism; 51, base; 52, lifting oil cylinder; 53, push-pull oil cylinder; 54, guide rail; 55, connecting seat; 56, raceway; 57, roller;

[0039] 6, locking mechanism; 61, locking groove; 62, locking block; 63, locking oil cylinder. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below by combining with the drawings and examples, and it should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0041] Referring to Figures 1-10The utility model provides a kind of turnover type car milling rotary table rotary drive unit, including speed reducer base 1, the top of speed reducer base 1 is rotatably installed with rotary table 2, rotary table 2 is fixed with driving gear ring 21, driving gear ring 21 is drivingly connected with even number of driving gears 23, each driving gear 23 is drivingly connected with a motor 4 by a speed reduction mechanism, driving gear 23, speed reduction mechanism and motor 4 are arranged in the inside of speed reducer base 1;Rotary table 2 is fixed with feedback shaft 11, speed reducer base 1 is provided with encoder 22 or round grating matched with feedback shaft 11.The motor 4 in the utility model preferably selects servo motor.Using the principle of double-motor anti-backlash, in the utility model, even number of driving gears 23 are generally used to mesh transmission with driving gear ring 21, and 2, 4, 6 or 8 driving gears 23 are generally preferred.The bottom of speed reducer base 1 is also provided with base 51, and turnover mechanism 5 is arranged between speed reducer base 1 and base 51.Base 51 is used for fixing and supporting, and the turnover mechanism can rotate speed reducer base 1 to a certain angle, and 90 degrees are most commonly used, so that not only the switching between vertical car and horizontal car can be quickly realized, but also almost all types of complex curved surfaces can be machined by cooperating with gantry machine tool or movable column vertical car type machine tool.

[0042] The utility model discloses a turnover mechanism 5, including lifting oil cylinder 52, one side of speed reducer base 1 is hinged to base 51 through first rotary shaft 13, speed reducer base 1 is generally hollow, and lifting oil cylinder 52 is arranged on the inside of speed reducer base 1, the cylinder body of lifting oil cylinder 52 is hinged to base 51, and the piston rod of lifting oil cylinder 52 is hinged to speed reducer base 1;One end of first rotary shaft 13 is installed with the turnover servo motor of encoder. Figure 6 Lifting oil cylinder 52 lifts speed reducer base 1 to a certain angle, in addition to using mechanical locking, it can also be locked through hydraulic oil circuit, which is more common in hydraulic system.Rotation angle is mostly 90 degrees and 45 degrees, in order to improve stability, locking mechanism 6 is also used.The turnover servo motor with encoder is prior art, is used for monitoring and timely feedback rotation angle to control system, realizes linkage between multiple devices.

[0043] When using, horizontal car and vertical car are used most frequently, referring to Figure 6The locking mode during the horizontal machining. The locking mechanism 6 comprises a locking groove 61, a locking block 62 and a locking oil cylinder 63, the bottom of the locking block 62 is provided with the locking oil cylinder 63, the cylinder body of the locking oil cylinder 63 is fixedly connected with the base 51, the piston rod of the locking oil cylinder 63 is connected with the locking block 62, and the locking oil cylinder 63 drives the locking block 62 to slide in the locking groove 61. The locking oil cylinder 63 is arranged between the locking block 62 and the base 51, and the locking oil cylinder 63 drives the locking block 62 to slide in the locking groove 61; when the lifting oil cylinder 52 rotates the reducer base 1 to 90 degrees, in order to ensure the stability, the bottom of the first rotating shaft 13 is provided with the locking mechanism 6, and the types of the locking mechanism 6 are various. The locking oil cylinder 63 and the locking block 62 are adopted in the utility model. The locking oil cylinder 63 and the locking block 62 are generally used in cooperation with a zero positioning system; when the reducer base 1 is rotated to a set position (such as 90 degrees), the locking oil cylinder 63 will quickly drive the locking block 62 to extend upwards, the outer end surface of the locking block 62 and the inner end surface of the locking groove 61 are all wedge-shaped and matched with each other, and after the locking block 62 moves by a certain distance, the reducer base 1 is temporarily clamped and tightly held. When it is needed to return to the initial state, the control system automatically controls the locking oil cylinder 63 to retract, so that the locking block 62 moves downwards and the locking mechanism 6 is opened; at this time, the piston rod of the lifting oil cylinder 52 retracts, the reducer base 1 is rotated to the initial position, and this part is mature prior art. The lifting oil cylinder 52 mainly plays a role in stable support and rotation, and the working principle of the process can be referred to the working principle of the turnover carriage in the engineering vehicle, which is prior art. The lifting oil cylinder 52 is a multilayer oil cylinder, which is generally embedded in the base 51.

[0044] As another embodiment, the turnover mechanism 5 of the utility model comprises a lifting oil cylinder 52 and a push-pull oil cylinder 53, the lifting oil cylinder 52 is hinged between the reducer base and the base 51, the reducer base 1 is hinged with a connecting seat 55 through the second rotating shaft 14, the push-pull oil cylinder 53 is hinged between the connecting seat 55 and the base 51, the base 51 is fixedly provided with a guide rail 54, the connecting seat 55 is slidingly arranged on the guide rail 54, the lifting oil cylinder 52 is a multilayer oil cylinder (see Figure 6 and Figure 7 ), and the push-pull oil cylinder 53 is a reciprocating telescopic oil cylinder. Referring to Figure 8 , another lifting mode is that the lifting oil cylinder 52 and the push-pull oil cylinder 53 cooperate, the lifting oil cylinder 52 is upward lifting, and the push-pull oil cylinder 53 is abutting and pushing, so that the movement is more stable. During the above turnover process, the position of the rotation center of the rotary table 2 changes from the position of the tool, and the horizontal machining is especially suitable for workpieces with a certain length, so that the distance between the workpiece and the machining tool can be prolonged. Figures 6-10The plurality of turnover mechanisms 5 are shown, and the reducer base 1 driven by each turnover mechanism 5 has certain differences, and a two-stage planetary reduction can be used inside, or a one-stage reduction can be used, merely for the purpose of demonstration and illustration. The second rotating shaft 14 and the third rotating shaft 15 are movable, and have the same effect as the first rotating shaft 13, and both serve to support and rotate.

[0045] The turnover mechanism comprises a lifting oil cylinder 52 and a push-pull oil cylinder 53, the lifting oil cylinder 52 is hinged between the reducer base 1 and a base 51, the reducer base 1 is hinged with a connecting seat 55 through the third rotating shaft 15, the push-pull oil cylinder 53 is hinged between the connecting seat 55 and the base 51, the base 51 is fixedly provided with a rolling track 56, the third rotating shaft 15 is provided with a rolling wheel 57, the rolling wheel 57 is constrained in the rolling track 56, the lifting oil cylinder 52 is a multi-layer oil cylinder, and the push-pull oil cylinder 53 is a reciprocating telescopic oil cylinder. Figure 10 In actual use, if it is heavy load, the rolling track 56 can be arranged, the rolling wheel 57 slides in the rolling track 56, sliding friction can be changed into rolling friction, and processing and installation are more convenient.

[0046] The reducer mechanism is a planetary reducer mechanism 3. The planetary reducer mechanism 3 is relatively mature prior art, and after reduction, stable output power can be obtained. When a plurality of driving gears 23 are used to drive the same gear ring, the generated tensioning force can not only eliminate the transmission gap, but also obtain larger output torque, and is suitable for a large rotary table 2. Figure 5 The reducer mechanism can also be directly replaced by one gear, and the cost is lower, but the precision is relatively low. Since the planetary reducer is compact in structure, has a large reduction ratio and high precision, the planetary reducer structure is preferably selected.

[0047] Referring to Figs. 5 and 6, Figure 1 and Figure 3 The planetary reducer mechanism 3 comprises a shell 35, a sun gear 311, a planetary support 32, a planetary gear 322 and a planetary support output shaft 321, the shell 35 is fixedly connected with the reducer base 1, the shell 35 is provided with an inner gear ring 351, the sun gear 311 is in transmission connection with a motor shaft 31 of a motor 4, the planetary gear 322 is rotatably installed on the planetary support 32, and the sun gear 311 is in meshing connection with the inner gear ring 351 through the planetary gear 322; the planetary support output shaft 321 is fixedly connected with the planetary support 32 and can be integrally formed, and the planetary support output shaft 321 is fixedly connected with the driving gear 23. The sun gear 311 is directly connected with the motor shaft 31 of the motor 4, a plurality of planetary gears 322 rotate around the sun gear 311 and transmit power to the planetary support output shaft 321 through the planetary support 32, and the driving gear 23 is in transmission connection with the driving gear ring 21, so as to transmit the power of the motor to the driving gear ring 21. The driving gear ring 21 is the inner gear ring 351, and can also be an outer gear ring (see Figure 4), both of which can realize power transmission by adopting the planetary reduction mechanism 3.

[0048] The utility model discloses a sun gear 311 is provided with two-stage reduction mechanism between motor 4. Two-stage reduction mechanism includes the box 36, and the box 36 is rotatably installed with the driving force input shaft 37, intermediate one axle 33 and driving force output shaft 34, and the driving force output shaft 34 is coaxial with the driving force input shaft 37, and the output end of driving force output shaft 34 is transmission connection with sun gear 311, and the driving force input shaft 37 is transmission connection with motor shaft 31, and the driving force input shaft 37 is provided with driving force gear 371, and intermediate one axle 33 is provided with intermediate one axle pinion 331 and intermediate one axle gear 332, and the driving force output shaft 34 is slidably provided with two axle transmission gear 341, and two axle transmission gear 341 is selectively engaged with driving force gear 371 or intermediate one axle pinion 331. Two-stage reduction mechanism is on the basis of one-stage planetary reduction, and a gearbox is added to the output end of motor 4, so that gear shifting function can be realized, and then the output torque is increased. The driving force output shaft 34 is slidably provided with two axle transmission gear 341, and two axle transmission gear 341 can be connected to a gear shifting mechanism (not shown in the figure), and can be directly transmission connection with the driving force input shaft 37, or the input speed of the driving force input shaft 37 can be output to the sun gear 311 after speed change through the reduction of the intermediate one axle pinion 331 and the intermediate one axle gear 332. The intermediate one axle 33 in the box 36 can be multiple, and two symmetrically installed are generally preferred, and since the modulus of the pinion in the box 36 is generally small, multiple gear drives are used to output greater torque.

[0049] The utility model discloses a speed reducer base 1 is provided with installation base plate 12, and the speed reduction mechanism is installed in installation base plate 12, and the closed cavity is formed between installation base plate 12 and the rotary table 2, and installation base plate 12 is provided with the central hole, and the feedback shaft 11 is arranged in the central hole and corresponds with the encoder 22. Installation base plate 12 is a part of the speed reducer base 1, and the motor 4 is fixed with installation base plate 12 through the motor connecting plate, and the closed cavity is used for sealing, and the normal operation of the internal parts is guaranteed. The motor in the utility model preferably is servo motor, satisfies the transmission accuracy on the basis, and production cost is more easily controlled.

[0050] The utility model discloses the rotary table 2 and the speed reducer base 1 between being provided with first sealing device, and the feedback shaft 11 and the central hole between being provided with second sealing device. First sealing device and second sealing device all are for realizing dynamic sealing, and first sealing device and second sealing device generally preferentially select sealing ring, and sealing ring, sealing pad and the like can also be used, and the central hole is used for placing the feedback shaft 11, and is installed with the encoder 22 or circular grating cooperation, and is used for real -time feedback speed, realizes the linkage with other electrical equipment.

[0051] Of course, the utility model can also have other various embodiments, and the skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but these corresponding changes and deformations should all belong to the protection scope of the claims attached to the utility model.

Claims

1. A swivel type turning / milling head rotary drive unit characterized by comprising: The application relates to a rotary table driving mechanism. The rotary table driving mechanism comprises a reducer base, a rotary table arranged on the top of the reducer base, a driving gear ring fixedly arranged on the rotary table, an even number of driving gears drivingly connected with the driving gear ring, a reducer mechanism and a motor, the driving gears, the reducer mechanism and the motor being arranged in the reducer base, a feedback shaft fixedly arranged on the rotary table, and an encoder matched with the feedback shaft arranged on the reducer base. A base is arranged between the reducer base and the base, and a turnover mechanism is arranged between the reducer base and the base.

2. The flip-around wheel / mill head rotary drive unit of claim 1 wherein, The turnover mechanism comprises a lifting oil cylinder, one side of the reducer base is hingedly connected with the base through a first rotating shaft, and the lifting oil cylinder is hingedly connected between the reducer base and the base; one end of the first rotating shaft is provided with a turnover servo motor with an encoder.

3. The flip-around wheel / mill head rotary drive unit of claim 2 wherein, A locking mechanism is arranged between the reducer base and the base, the locking mechanism comprises a locking groove, a locking block and a locking oil cylinder, the locking groove is arranged on the base, the locking oil cylinder is arranged between the locking block and the base, the locking oil cylinder drives the locking block to slide in the locking groove, and the locking mechanism realizes the locking of the reducer base and the base; the outer end surface of the locking block and the inner end surface of the locking groove are in matched wedge shapes.

4. The flip-around wheel / mill head rotary drive unit of claim 1 wherein, The turnover mechanism comprises a lifting oil cylinder and a push-pull oil cylinder, the lifting oil cylinder is hingedly connected between the reducer base and the base, the reducer base is hingedly connected with a connecting seat through a second rotating shaft, the push-pull oil cylinder is hingedly connected between the connecting seat and the base, a guide rail is fixedly arranged on the base, the connecting seat is slidingly arranged on the guide rail, and the lifting oil cylinder is a multilayer oil cylinder.

5. The flip-around wheel / mill head rotary drive unit of claim 1 wherein, The turnover mechanism comprises a lifting oil cylinder and a push-pull oil cylinder, the lifting oil cylinder is hingedly connected between the reducer base and the base, the reducer base is hingedly connected with a connecting seat through a third rotating shaft, the push-pull oil cylinder is hingedly connected between the connecting seat and the base, a rolling way is fixedly arranged on the base, the third rotating shaft is provided with a rolling wheel, the rolling wheel is constrained in the rolling way, and the lifting oil cylinder is a multilayer oil cylinder.

6. The flip-around wheel / mill head rotary drive unit of claim 1 wherein, The reducer mechanism is a planetary reducer mechanism; the planetary reducer mechanism comprises a shell, a sun gear, a planet carrier, a planet gear and a planet carrier output shaft, the shell is fixedly connected with the reducer base, the shell is provided with an inner gear ring, the sun gear is drivingly connected with a motor shaft, the planet gear is rotatably arranged on the planet carrier, and the sun gear is in mesh with the inner gear ring through the planet gear; the planet carrier output shaft is fixedly connected with the planet carrier, and the planet carrier output shaft is drivingly connected with the driving gear.

7. The flip-around wheel / mill head rotary drive unit of claim 6 wherein, A two-stage reducer mechanism is arranged between the sun gear and the motor; the two-stage reducer mechanism comprises a box body, a driving input shaft, an intermediate shaft and a driving output shaft are rotatably arranged in the box body, the driving output shaft is coaxially arranged with the driving input shaft, and the output end of the driving output shaft is drivingly connected with the sun gear. The main power input shaft is in transmission connection with the motor, the main power input shaft is provided with a main power gear, the intermediate shaft is provided with an intermediate shaft small gear and an intermediate shaft large gear, and the main power output shaft is slidably provided with a two-shaft transmission gear.

8. The flip-around wheel / mill head rotary drive unit of claim 7 wherein, The reducer base is provided with a mounting base plate, the reducer mechanism is mounted on the mounting base plate, a closed cavity is formed between the mounting base plate and the rotary table, the mounting base plate is provided with a center hole, the feedback shaft is arranged in the center hole and corresponds to the encoder, and the driving gear ring is an inner gear ring or an outer gear ring.

9. The flip-around wheel / mill head rotary drive unit of claim 8 wherein, First sealing devices are arranged between the rotary table and the reducer base, and second sealing devices are arranged between the feedback shaft and the center hole.

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