Vertical and horizontal turning and milling composite rotary table

Abstract

The utility model discloses a vertical and horizontal turning and milling composite rotary table, which relates to the technical field of rotary table driving equipment and comprises a rotary table unit and a vertical and horizontal conversion device. The vertical-horizontal conversion device comprises a fixed seat, the top supporting surface of the fixed seat is a 45-degree inclined surface, the fixed seat is provided with a vertical-horizontal conversion driving device, and the vertical-horizontal conversion driving device is in transmission connection with a centering rotating shaft; the top supporting face of the speed reducer base is a 45-degree inclined face, the bottom supporting face of the speed reducer base abuts against the top supporting face of the fixing base, the speed reducer base is rotationally installed on the fixing base, and the centering rotating shaft is fixed to the speed reducer base. A rotary locking device used for locking the speed reducer base and the fixing base and a supporting locking device used for supporting the speed reducer base when the rotary table unit is located at the vertical machining station are arranged between the rotary table unit and the vertical-horizontal conversion device. Therefore, the angle of the speed reducer base is adjusted, and the machining requirements of complex workpieces are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotating platform driving device technical field, concretely relates to a vertical and horizontal vehicle milling composite rotating platform. BACKGROUND

[0002] In order to adapt to the development of large mechanical equipment, the development trend of numerical control machine tool is mainly large, heavy and multi-functional, and the larger the size of the machine tool is, the longer the stroke is, and the higher the transmission precision requirement is. Taking the rotating platform driving of numerical control machine tool as an example, the driving force of the rotating platform comes from the motor, and the motor is reduced through the speed reducer, and the rotating speed of the rotating platform is controlled through the driving gear ring. There are many types of speed reducers, including planetary reducer, RV cycloid reducer and harmonic reducer, which all play the role of matching rotating speed and transmitting torque, and the driving gear ring adopts zero-gap precision speed reducer, which is the highest precision driving mode in theory.

[0003] Limited by the transmission characteristics of the gear, in order to avoid the phenomenon of "lock" of two relative gears when driving the gear ring, there must be a sliding gap (i.e. transmission gap) between the speed reducer and the gear ring, so no matter what manufacturing process or structure technology the manufacturer adopts, the transmission gap cannot be eliminated.

[0004] In order to improve the transmission precision, the usual way is to reduce the transmission gap, some manufacturers apply a certain pre-tightening force to the speed reducer, or use a disc spring to always maintain a certain compression force, but when the transmitted torque is greater than the compression force, the speed reducer will increase the transmission gap due to the torque deformation. The positive and negative gaps of the precision planetary transmission speed reducer used in numerical control machine tool are generally between 1-5 arc minutes. The higher precision speed reducer is extremely expensive, generally relies on import, and the maintenance cost is extremely high, so it is difficult to popularize. Some precision driving equipment can also use torque motor direct driving technology, that is, the torque motor directly drives the rotating platform to rotate. The torque motor has high precision and convenient control, but it is generally only suitable for small machine tool rotating platform (such as cradle type), and the torque motor direct driving technology is currently used in cradle rotating platform. When machining, the angle of the rotating platform can be adjusted at any time, and the included angle between the workpiece and the machining tool is changed; limited by the huge inertia generated by the rotation of large workpieces, the maximum load capacity of the cradle rotating platform is about 1 ton, so it is only suitable for machining small workpieces. For some large rotating platform, the torque motor has poor load capacity and rigidity, and cannot meet the demand of torque output of heavy load and high rigidity.

[0005] According to the position of the machine tool spindle, the existing machine tool can be divided into horizontal and vertical types, and part of large and complex parts (such as propeller and wind power blade) need to be tilted at a certain angle to realize machining.

[0006] In the prior art, there is a patent file with the patent name: a non-orthogonal five-axis rotary table with the publication number: CN118951772A, in this file, by setting a non-orthogonal five-axis rotary table with a 45-degree angle, the demand for inclined machining is met, the rotary table and the cradle type machine tool rotary table are relatively small in size and poor in rigidity, and are only suitable for machining small workpieces, and it is difficult to meet the machining demand of large workpieces, if directly used for machining large workpieces, machine tool accidents are easy to occur. Practical new type content

[0007] In order to overcome the above defects, the purpose of the utility model is to provide a vertical and horizontal turning and milling composite rotary table, which is convenient to adjust the vertical machining state and the horizontal machining state of the rotary table device, meets the machining demand of complex workpieces, and can be widely applied to vertical and horizontal turning and milling composite machine tools.

[0008] In order to achieve the above purpose, the utility model provides a vertical and horizontal turning and milling composite rotary table, which comprises: a rotary table unit and a vertical and horizontal conversion device; the rotary table unit comprises a speed reducer base, a rotary table body is rotatably installed on the top of the speed reducer base, a driving gear ring is fixedly arranged on the rotary table body, an even number of driving gears are drivingly connected with the driving gear ring, each driving gear is drivingly connected with a motor through a speed reduction mechanism, the driving gear, the speed reduction mechanism and the motor are arranged in the interior of the speed reducer base; the vertical and horizontal conversion device comprises a fixed seat, the top supporting surface of the fixed seat is a 45° inclined surface, the fixed seat is provided with a vertical and horizontal conversion driving device, and the vertical and horizontal conversion driving device is drivingly connected with a centering rotary shaft; the bottom supporting surface of the speed reducer base is a 45° inclined surface, the bottom supporting surface of the speed reducer base is in abutment with the top supporting surface of the fixed seat, the speed reducer base is rotatably installed on the fixed seat, the centering rotary shaft is fixed on the speed reducer base, and rotary locking devices for locking the speed reducer base and the fixed seat and supporting locking devices for supporting the speed reducer base when the rotary table unit is in a vertical machining working position are arranged between the rotary table unit and the vertical and horizontal conversion device. Preferably, the rotary locking devices comprise rotary locking oil cylinders and supporting locking oil cylinders, the rotary locking oil cylinders are fixedly arranged on the fixed seat, the speed reducer base is fixedly provided with fixed bolts matched with the rotary locking oil cylinders, and the speed reducer base is further provided with pull pins matched with the supporting locking oil cylinders.

[0009] Preferably, the rotary locking devices comprise rotary locking oil cylinders, the rotary locking oil cylinders are fixedly arranged on the fixed seat, the speed reducer base is provided with an annular T-shaped groove, a T-shaped locking bolt is arranged in the T-shaped groove, and the T-shaped locking bolt is fixedly connected with the piston of the rotary locking oil cylinder; the supporting locking devices comprise supporting locking oil cylinders, and the speed reducer base is provided with pull pins matched with the supporting locking oil cylinders.

[0010] Preferably, the standing and lying conversion driving device comprises a worm and gear mechanism, a worm in the worm and gear mechanism is fixedly connected with the centering rotating shaft, and a worm gear in the worm and gear mechanism is drivingly connected with a servo motor.

[0011] Preferably, the speed reduction mechanism is a planetary speed reduction mechanism.

[0012] Preferably, the planetary speed reduction mechanism comprises a housing, a sun gear, a planet carrier, a planet gear and a planet carrier output shaft, the housing is fixedly connected with the speed reducer base, the housing is provided with an inner ring gear, the sun gear is drivingly connected with the 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.

[0013] Preferably, a two-stage speed reduction mechanism is arranged between the sun gear and the motor.

[0014] Preferably, the two-stage speed reduction mechanism comprises a box body, a driving force input shaft, an intermediate shaft and a driving force output shaft are rotatably installed in the box body, the driving force output shaft is coaxially arranged with the driving force input shaft, and an output end of the driving force output shaft is drivingly connected with the sun gear.

[0015] The driving force input shaft is drivingly connected with the motor, the driving force input shaft is provided with a driving force gear, the intermediate shaft is provided with an intermediate shaft small gear and an intermediate shaft large gear, a two-shaft transmission gear is slidingly arranged on the driving force output shaft, and the two-shaft transmission gear is selectively engaged with the driving force gear or the intermediate shaft small gear.

[0016] Preferably, the driving gear ring is an inner gear ring or an outer gear ring.

[0017] 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 rotating table body, the mounting base plate is provided with a center hole, the feedback shaft is arranged in the center hole and corresponds to the encoder.

[0018] Preferably, a first sealing device is arranged between the rotating table body and the speed reducer base, and a second sealing device is arranged between the feedback shaft and the center hole.

[0019] After the above technical scheme is adopted, the beneficial technical effects of the present application are as follows:

[0020] 1. The fixed seat is arranged at the bottom of the reducer base, the top of the fixed seat is provided with a 45° supporting surface, the reducer base rotates around the 45° supporting surface, and the fixed seat is provided with a vertical-horizontal conversion driving device. When the centering rotating shaft of the reducer base is rotated by 180 degrees through the rotating driving device, the rotating locking device is used in cooperation, the direction adjustment and fixation of the rotating table body are realized, that is, the switching between the vertical machine and the horizontal machine, the rotating table body angle is adjusted, the range of machinable parts is expanded, and after the angle adjustment, the rotating table unit is in the vertical machining working position, the supporting locking device is used for supporting the reducer base, the stability is high, and the rotating table unit is still suitable for machining large workpieces.

[0021] 2. A plurality of rotating driving units are arranged by using the principle of double-motor anti-backlash, and an encoder is arranged at the bottom of the rotating table body, and a plurality of motors are used to ensure that at least one driving gear and the driving gear ring of the rotating table body generate a tension force when the rotating table body works, so that the condition that the output torque of the motor is zero at the same time never occurs, and under the action of the torque, the movement gap of the main gear cannot exist, so that the stability of the output is ensured.

[0022] 3. Since the servo motor is connected with the driving gear through the planetary reducer mechanism, the planetary reducer 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 reducer mechanism can also increase the output torque, and therefore, the planetary reducer mechanism is more suitable for heavy load, and is especially suitable for driving the rotating table body with a large size. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is an embodiment schematic view of the rotating table unit of the utility model in the vertical machining working position;

[0024] Figure 2 is an embodiment schematic view of the rotating table unit of the utility model in the horizontal machining working position;

[0025] Figure 3 is a structural schematic view of the fixed seat in the vertical-horizontal conversion device of the utility model;

[0026] Figure 4 is an internal schematic view of the rotating table unit and the internal planetary reducer mechanism of the utility model;

[0027] Figure 5 is a reference schematic view of the use state (internal gear ring) of the two-stage reducer mechanism of the utility model;

[0028] Figure 6 is an explosion state reference schematic view of the planetary reducer mechanism of the utility model;

[0029] Figure 7is the use state (outer gear ring) reference schematic diagram of the two-stage speed reduction mechanism of the utility model;

[0030] Figure 8 is the use state reference schematic diagram of the utility model using a gear as a speed reduction mechanism;

[0031] In the figure,

[0032] 1, speed reducer base; 11, feedback shaft; 12, mounting base plate; 13, centering rotation shaft;

[0033] 2, rotary table body; 21, driving gear ring; 22, encoder; 23, driving gear;

[0034] 3, planetary speed reduction 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;

[0035] 4, motor;

[0036] 5, fixed seat; 51, worm gear; 52, worm;

[0037] 6, rotary locking device; 61, rotary locking oil cylinder; 611, T-shaped locking bolt; 62, supporting locking oil cylinder. DETAILED DESCRIPTION

[0038] 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.

[0039] Referring to Figures 1-3The utility model provides a vertical, horizontal car milling composite rotary table, including rotary table unit and vertical horizontal conversion device, the top rotation of speed reducer base 1 is installed with rotary table body 2, rotary table body 2 is solid with drive gear ring 21, drive gear ring 21 transmission is connected with even number drive gear 23, every drive gear 23 is respectively through a speed reduction mechanism with a motor 4 transmission connection, drive gear 23, speed reduction mechanism and motor 4 set up in the inside of speed reducer base 1, rotary table body 2 solid with feedback shaft 11 is provided, speed reducer base 1 is provided with the encoder 22 or round grating matched with feedback shaft 11, the motor 4 in the utility model is preferred to use servo motor, according to the mechanical public knowledge of double motor clearance, the utility model, even number drive gear 23 is generally used with drive gear ring 21 meshing transmission, and 2, 4, 6 or 8 drive gears 23 are generally preferred.

[0040] Vertical horizontal conversion device includes fixed seat 5, the top support surface of fixed seat 5 is 45 ° inclined plane, fixed seat 5 is provided with vertical horizontal conversion drive arrangement, vertical horizontal conversion drive arrangement transmission is connected with centering rotary shaft 13, the top support surface of speed reducer base 1 is 45 ° inclined plane, the bottom support surface of speed reducer base 1 and the top support surface of fixed seat 5 are in close contact, speed reducer base 1 rotation is installed in fixed seat 5, centering rotary shaft 13 is fixedly connected to speed reducer base 1, rotary locking device for locking speed reducer base 1 and fixed seat 5 and support locking device for supporting speed reducer base 1 when rotary table unit is in vertical processing work position are equipped between rotary table unit and vertical horizontal conversion device. Fixed seat 5 is generally directly fixed to the ground for support. The top support surface of fixed seat 5 is a 45° inclined surface. The 45° is a commonly used inclination angle, which is also conducive to programming and debugging of machine tools. The centering rotary shaft 13 is connected with a rotary drive device, and the fixed seat 5 further has a plurality of rotary locking devices. The rotary locking device is used for limiting and fixing the speed reducer base 1, and generally adopts hydraulic locking. The hydraulic locking is a mature prior art, which can realize quick locking and opening by cooperating with a pull pin and a T-shaped bolt, and helps to realize zero positioning (i.e., after rotating to a specified position, automatically locking or automatically opening), thereby improving the processing efficiency. Figure 2 The support locking device is hidden in the fixed seat 5. The centering rotary shaft 13 can be hollow to facilitate the installation of various lines and hydraulic lines inside it.

[0041] The rotary locking device of the utility model includes a rotary locking cylinder 61, which is fixedly arranged on the fixed seat 5. The speed reducer base 1 is provided with an annular T-shaped groove, and a T-shaped locking bolt 611 is arranged in the T-shaped groove. The T-shaped locking bolt 611 is fixedly connected with the piston of the rotary locking cylinder 61. The support locking device includes a support locking cylinder 62, and the speed reducer base 1 is provided with a pull pin corresponding to the position of the support locking cylinder 62. The rotary locking cylinder 61, the support locking cylinder 62, and the pull pin are all prior art, which can be seen inFigure 1 In the embodiment, a T-shaped slot in the form of a ring can be arranged on the reducer base 1, and a T-shaped locking bolt 611 can be arranged in the T-shaped slot, the bottom of the T-shaped locking bolt 611 being connected with the rotary locking oil cylinder 61, when the reducer base 1 is rotated to a specified angle, the rotary locking oil cylinder 61 drives the T-shaped bolt to move downward through the piston, thereby achieving the tension locking of the reducer base 1.

[0042] The rotary driving device comprises a worm gear mechanism which is adapted to each other, the worm wheel 51 in the worm gear mechanism is fixedly connected, and the worm 52 in the worm gear mechanism is drivingly connected with a servo motor. In addition to the worm gear mechanism, a pair of meshing gears can also be used to transmit power, so that the centering rotary shaft 13 can be stably rotated.

[0043] The reducer mechanism is a planetary reducer mechanism 3. The planetary reduction is a relatively mature prior art, and after the planetary reduction, stable output power can be obtained. When a plurality of driving gears 23 are used to drive the same gear ring, not only the transmission gap can be eliminated, but also a larger output torque can be obtained, which is suitable for a large rotary table body 2. Figure 8 The reducer mechanism can also be directly replaced by a gear, which is lower in cost but relatively lower in precision, of course, a simple reducer gear box can also be used to replace the reducer mechanism, since the planetary reducer mechanism is compact in structure, high in reduction ratio and high in precision, the planetary reducer mechanism is preferably selected.

[0044] The planetary reducer mechanism 3 comprises a housing 35, a sun gear 311, a planetary support 32, a planetary gear 322 and a planetary support output shaft 321. Figure 4 Figure 6 The housing 35 is fixedly connected with the reducer base 1 and is provided with an inner gear ring 351, the sun gear 311 is drivingly connected with the motor shaft 31, the planetary gear 322 is rotatably installed on the planetary support 32, and the sun gear 311 is engaged 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, the driving gear 23 is drivingly connected 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 7 ), the outer gear ring is easier to install and has stronger power, and the two modes can both be used to achieve power transmission by the planetary reducer mechanism 3.

[0045] The utility model discloses a sun gear 311 is provided with two-stage speed reduction mechanism between motor 4. Two-stage speed reduction mechanism includes the box 36, and the box 36 is rotatably installed with the driving force input shaft 37, intermediate 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 is arranged, and the output end of driving force output shaft 34 is transmissionally connected with sun gear 311;Driving force input shaft 37 is transmissionally connected with motor shaft 31, and driving force input shaft 37 is provided with driving force gear 371, and intermediate axle 33 is provided with intermediate axle pinion 331 and intermediate axle gear 332, and two-axis transmission gear 341 is slidably arranged on driving force output shaft 34, and two-axis transmission gear 341 is selectively meshed with driving force gear 371 or intermediate axle pinion 331. Two-stage speed reduction mechanism is on the basis of the first 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. Driving force output shaft 34 is slidably provided with two-axis transmission gear 341, and two-axis transmission gear 341 can be connected to a gear shifting mechanism (not shown), and can be directly transmissionally connected with driving force input shaft 37, or the input speed of driving force input shaft 37 can be output to sun gear 311 after speed change and reduction through intermediate axle pinion 331 and intermediate axle gear 332. The intermediate axle 33 in the box 36 can be multiple, and two symmetrically installed ones are generally preferred, and the modulus of the pinion in the box 36 is generally small, and multiple gear driving is used to output greater torque.

[0046] 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 rotary table body 2, and installation base plate 12 is provided with the central hole, and feedback shaft 11 is arranged in the central hole and corresponds with encoder 22. Installation base plate 12 is a part of speed reducer base 1, and motor 4 is fixed through motor connecting plate and installation base plate 12, and the closed cavity is used for sealing to ensure the normal operation of internal parts. The motor in the utility model preferably is servo motor, which is easier to control production cost on the basis of meeting transmission accuracy.

[0047] The utility model discloses the rotary table body 2 and speed reducer base 1 between being provided with first sealing device, and feedback shaft 11 and central hole between being provided with second sealing device. First sealing device and second sealing device all are for realizing dynamic sealing, and generally first sealing device and second sealing device preferentially select sealing ring, and the central hole is used for placing feedback shaft 11, and is installed with encoder 22 or circular grating, and is used for real -time feedback speed, realizes the linkage with other electrical equipment.

[0048] 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 vertical and horizontal milling compound rotary table, characterized in that, The utility model relates to a rotary table unit and an upright and horizontal conversion device. The rotary table unit comprises a reducer base, a rotary table body is rotatably installed on the top of the reducer base, a driving gear ring is fixedly arranged on the rotary table body, an even number of driving gears are drivingly connected to the driving gear ring, each driving gear is drivingly connected to an electric motor through a speed reducer, and the driving gear, the speed reducer and the electric motor are arranged inside the reducer base. The upright and horizontal conversion device comprises a fixing seat, the top supporting surface of the fixing seat is a 45° inclined surface, the fixing seat is provided with an upright and horizontal conversion driving device, and the upright and horizontal conversion driving device is drivingly connected to a centering rotary shaft. The bottom supporting surface of the reducer base is a 45° inclined surface, the bottom supporting surface of the reducer base is in abutment with the top supporting surface of the fixing seat, the reducer base is rotatably installed on the fixing seat, the centering rotary shaft is fixed to the reducer base, and the rotary locking device for locking the reducer base and the fixing seat and the supporting locking device for supporting the reducer base when the rotary table unit is in the vertical machining working position are arranged between the rotary table unit and the upright and horizontal conversion device. The rotary locking device comprises a rotary locking oil cylinder, the rotary locking oil cylinder is fixedly arranged on the fixing seat, the reducer base is provided with a T-shaped slot in the shape of a ring, a T-shaped locking bolt is arranged in the T-shaped slot, and the T-shaped locking bolt is fixedly connected to the piston of the rotary locking oil cylinder.

2. The vertical / horizontal combined milling and turning table according to claim 1, characterized in that, The supporting locking device further comprises a supporting locking oil cylinder, the supporting locking oil cylinder is fixedly connected to the fixing seat, and the bottom of the reducer base is provided with a pull pin corresponding to the supporting locking oil cylinder. The upright and horizontal conversion driving device comprises a worm and gear mechanism, the worm of the worm and gear mechanism is fixedly connected to the centering rotary shaft, and the worm gear of the worm and gear mechanism is drivingly connected to a servo motor.

3. The vertical / horizontal combined milling and turning table according to claim 2, characterized in that, The speed reducer is a planetary speed reducer.

4. The vertical / horizontal combined milling and turning rotary table according to claim 1, characterized in that, The planetary speed reducer comprises a housing, a sun gear, a planet carrier, a planet gear and a planet carrier output shaft, the housing is fixedly connected to the reducer base, the housing is provided with an inner gear ring, the sun gear is drivingly connected to a motor shaft, the planet gear is rotatably installed on the planet carrier, the sun gear is meshed with the inner gear ring through the planet gear, the planet carrier output shaft is fixedly connected to the planet carrier, and the planet carrier output shaft is drivingly connected to the driving gear.

5. The vertical / horizontal combined milling and turning head according to claim 4, characterized in that, A two-stage speed reducer is arranged between the sun gear and the motor.

6. The vertical / horizontal combined milling and turning head according to claim 5, characterized in that, The two-stage speed reducer comprises a box body, a driving input shaft, an intermediate shaft and a driving output shaft are rotatably installed 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 to the sun gear.

7. The vertical / horizontal combined milling and turning head according to claim 6, characterized in that, ​ 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 vertical / horizontal combined milling and turning head according to claim 1, characterized in that, The driving gear ring is an inner gear ring or an outer gear ring.

9. The vertical / horizontal combined milling and turning head according to claim 1, characterized in that, 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 body, the mounting base plate is provided with a center hole, the rotary table body is fixedly provided with a feedback shaft, the feedback shaft is arranged in the center hole and corresponds to an encoder.

10. The vertical / horizontal combined milling and turning head according to claim 9, characterized in that, First sealing devices are arranged between the rotary table body and the reducer base, and second sealing devices are arranged between the feedback shaft and the center hole.

Images