Large horizontal five-axis machining center B-axis swing head assembling and overturning platform

Abstract

The utility model discloses a large-scale horizontal five-axis machining center B-axis swing head assembling and overturning platform which is composed of a rotary disc, a rotary support, a left auxiliary support, a right auxiliary support, a middle support and a rotary mechanism, the left auxiliary support is connected with the left inclined face of the rotary support in a combined mode, and the right auxiliary support is connected with the right inclined face of the rotary support in a combined mode. By means of the connection and combination mode of the supports, loads can be reasonably decomposed to all parts of the supports, and heavy loads can be borne on the premise that the weight of a support body is reduced as much as possible.

Description

Technical Field

[0001] The utility model belongs to the technical field of turnover equipment, and in particular relates to a turnover platform for assembling a B-axis swing head of a large-scale horizontal five-axis machining center. Background Art

[0002] As a high-end five-axis CNC machining center, the B-axis swing head unit is the core functional component with the most technical content in the whole machine, and has very high technical requirements in terms of structural complexity, parts manufacturing accuracy and assembly and debugging accuracy. The entire swing head unit weighs nearly 1800KG and is equipped with multiple precision parts. During the assembly process, the swing head box needs to be flipped several times according to the assembly process sequence to facilitate installation. The swing head box is heavy and has a relatively irregular shape, making it difficult to flip. The overall precision of the entire unit is high. If it is not careful during the flipping process, it will easily cause quality risks such as deformation of parts, and there are also personal safety hazards. When assembling the swing head unit, the B spindle needs to be installed in the left and right swivel holes at the front end of the swing head box with its rotation and positioning mechanism. In order to ensure assembly accuracy and facilitate installation, the swing head box needs to be flipped so that its swivel hole is vertically upward. During the assembly and flipping process of the swing head box, flipping is difficult and it is easy to cause quality and safety hazards if it is not careful, which seriously restricts the assembly efficiency and precision stability of the swing head unit.

[0003] The existing B-axis swing head unit assembly and flipping process uses lifting equipment such as cranes, lifting rings, and lifting belts, and requires the cooperation of multiple people to flip the left and right rotary cavities of the swing head box to vertically upward, respectively, to facilitate the installation of rotation and positioning mechanisms and precision components such as the B spindle. The entire assembly operation requires the swing head box to be repeatedly flipped multiple times according to the assembly process flow, resulting in flipping difficulties and low assembly efficiency. During the flipping process, quality and safety hazards are caused due to the heavy weight, irregular shape, and uneven force on the box.

[0004] To sum up, there are many inconveniences in the existing assembly and flipping processes of the swing head, mainly because the swing head unit is heavy and has an irregular shape, which makes assembly and flipping difficult and the assembly efficiency is low; at the same time, because the swing head unit has a compact structure, the wall thickness of the swing head box is relatively thin, and the size and shape and position tolerance accuracy requirements of the swing head box are relatively high, the box is easily deformed and slipped due to uneven force during the flipping process, causing quality and safety hazards.

[0005] In view of the above-mentioned assembly process characteristics of the B-axis swing head unit, it is urgently necessary to design a swing head assembly and flipping platform to make the swing head assembly process and flipping process simple, stable and reliable. Utility Model Content

[0006] The utility model aims to solve the problems of the prior art and provides a B-axis swing head assembly flip platform for a large-scale horizontal five-axis machining center.

[0007] In order to solve the technical problem, the technical solution of the utility model is: a large-scale horizontal five-axis machining center B-axis swing head assembly flip platform, including a turntable, a turntable bracket, a left auxiliary bracket, a right auxiliary bracket, a middle bracket and a turntable mechanism, the turntable mechanism is installed on the turntable bracket, the turntable mechanism is connected to one end surface of the turntable, the other end surface of the turntable is connected to the B-axis swing head unit, the left auxiliary bracket is combined and connected with the left inclined surface of the turntable bracket, the right auxiliary bracket is combined and connected with the right inclined surface of the turntable bracket, the two sides of the middle bracket are respectively connected to the left auxiliary bracket and the right auxiliary bracket, so that the turntable bracket, the left auxiliary bracket, the right auxiliary bracket and the middle bracket are connected into a whole; the turntable mechanism includes It includes a supporting rotary shaft system assembly, a rotary transmission shaft system assembly and an external gear rotary bearing. The left side of the supporting rotary shaft system assembly is installed in the central rear bearing hole of the rotary plate, and the right side of the supporting rotary shaft system assembly is installed in the central front bearing hole of the rotary bracket. The external gear rotary bearing sleeve is arranged outside the middle position of the supporting rotary shaft system assembly, and the inner ring end face of the external gear rotary bearing is fixedly connected to the rotary bracket, and the outer ring end face of the external gear rotary bearing is fixedly connected to the rotary plate. At the same time, the gear of the outer ring of the external gear rotary bearing is meshed with the gear of the rotary transmission shaft system assembly. The gear of the rotary transmission shaft system assembly rotates along the axis, driving the meshed external gear rotary bearing to rotate, thereby driving the rotary plate and the B-axis swing head unit to rotate at any angle along the axis.

[0008] Preferably, the supporting rotating shaft system assembly includes an intermediate rotating shaft, a spacer sleeve, a plane thrust needle roller bearing, a first locking nut, a rear bearing pressure plate, a deep groove ball bearing and a front bearing pressure plate. The spacer sleeve is mounted on the intermediate rotating shaft, the inner ring of the deep groove ball bearing is mounted on the outside of the spacer sleeve, the outer ring of the deep groove ball bearing is mounted in the external gear rotating support, the front bearing pressure plate is mounted and fixed on the left side of the intermediate rotating shaft, a plane thrust needle roller bearing is arranged between the front bearing pressure plate and the end face of the rotating plate, the rear bearing pressure plate is mounted on the right side of the intermediate rotating shaft, a plane thrust needle roller bearing is arranged between the rear bearing pressure plate and the end face of the rotating bracket, and the first locking nut is mounted on the intermediate rotating shaft on the right side of the rear bearing pressure plate to tighten the rear bearing pressure plate.

[0009] Preferably, the inner ring end face of the external gear slewing bearing is fixedly connected to the left end face of the slewing bracket, the outer ring end face of the external gear slewing bearing is fixedly connected to the right end face of the rotating disk, and gear guards are provided on both sides of the external gear slewing bearing.

[0010] Preferably, the rotary transmission shaft system assembly includes an angular contact ball bearing, a gear shaft, a reducer, a second locking nut, a cylindrical gear, a rear bearing cover, a bearing sleeve and a gear bearing pressure cover. The gear shaft is sleeved in the bearing hole of the bearing sleeve and is arranged at the lower part of the external gear slewing support. The gear shaft on both sides of the bearing sleeve is also sleeved with angular contact ball bearings. The gear bearing pressure cover is sleeved on the left side of the gear shaft to press the angular contact ball bearing on the left side. The rear bearing cover is sleeved on the right side of the gear shaft to press the outer ring of the angular contact ball bearing on the right side. The second locking nut presses the inner ring of the angular contact ball bearing on the right side. A cylindrical gear is installed at the front end of the gear shaft. The cylindrical gear is meshed with the gear of the external gear slewing support for transmission. The right end of the gear shaft is keyed to the reducer.

[0011] Preferably, a positioning assembly is installed on the upper end of the rotating bracket, and the positioning assembly includes a spring, a positioning sleeve, a baffle, a positioning pin, a cam knob, a positioning pressure cover, a travel switch, a switch slot cover, and a travel switch bracket. A top plate is arranged on the top of the rotating bracket, and the positioning sleeve is installed on the top plate. A positioning pin and a spring are installed in the hole of the positioning sleeve, and the spring sleeve is mounted on the positioning pin. A positioning pressure cover is arranged on the right end of the positioning sleeve to limit the positioning sleeve, and a baffle and a cam knob are installed on the right end of the positioning pin. The baffle is connected to one end of the spring, and the other end of the spring is connected to the inner wall of the positioning sleeve. The cam knob passes through the baffle and is fixedly connected to the positioning pin. A travel switch bracket is arranged at the bottom of the positioning sleeve, and a travel switch is installed on the travel switch bracket. A switch slot cover is arranged on the top of the travel switch, and the bottom of the baffle is at the same height as the bottom of the travel switch. When the cam knob is pulled to the right, the cam knob drives the positioning pin to move to the right to stretch the spring, and the baffle presses the contact of the travel switch as the positioning pin moves.

[0012] Preferably, a positioning hole is provided at a position of the rotating disk close to the rotating bracket corresponding to the positioning pin, and when the cam knob is released, the spring contracts to insert the left end of the positioning pin into the positioning hole of the rotating disk.

[0013] Preferably, a reducer support frame is installed on the middle bracket, an adjustment pad is arranged on the top of the reducer support frame, the reducer is fixed on the adjustment pad, the reducer is connected to the motor, the motor is electrically connected to the motor remote control switch box, the motor remote control switch box is fixed on the control mounting plate, the travel switch is electrically connected to the motor remote control switch box, and controls the motor control circuit of the reducer to be closed or opened.

[0014] Preferably, anti-slip plates are provided on the tops of the left auxiliary bracket and the right auxiliary bracket.

[0015] Compared with the prior art, the advantages of the utility model are:

[0016] (1) The utility model discloses a B-axis swing head assembly flip platform for a large-scale horizontal five-axis machining center. Taking into account the assembly process and test requirements of the B-axis swing head unit, the swing head box is fixed on the assembly flip platform. During the assembly process, the swing head box is flipped to any workstation according to the installation requirements of each component until the entire B-axis swing head unit is assembled. Then, the B-axis swing head unit is subjected to relevant test operations on the assembly flip platform;

[0017] (2) The utility model assembly flip platform is composed of a turntable, a turntable bracket, a left auxiliary bracket, a right auxiliary bracket, a middle bracket and a turntable mechanism. The left auxiliary bracket is connected to the left inclined surface of the turntable bracket, the right auxiliary bracket is connected to the right inclined surface of the turntable bracket, the middle bracket is connected to the left auxiliary bracket and the right auxiliary bracket on both sides, the turntable bracket is connected to the turntable mechanism, and the turntable mechanism is connected to the turntable. The connection and combination method of each bracket of the utility model can reasonably decompose the load to each part of the bracket, and can withstand heavy loads while minimizing the weight of the bracket body;

[0018] (3) The reducer of the rotary transmission shaft assembly of the utility model drives the cylindrical gear to rotate, and the cylindrical gear meshes with the gear of the external gear slewing bearing. The outer ring of the external gear slewing bearing is connected to the rotary plate, thereby driving the B-axis swing head unit to rotate at any angle. This flipping method can make the flipping process of parts with irregular shapes and heavy weight smooth and reliable;

[0019] (4) The utility model is also provided with a positioning assembly. When the cam knob is pulled to the right, the cam knob drives the positioning pin to move to the right, causing the spring to stretch. The baffle plate moves with the positioning pin to press the contact of the travel switch, so that the motor control circuit of the reducer is closed, thereby flipping the B-axis swing head unit. When the cam knob is released, the baffle plate is disconnected from the travel switch, so that the motor control circuit of the reducer is disconnected. At the same time, the spring contracts to insert the left end of the positioning pin into the positioning hole of the rotary disk, ensuring that the reducer will not be started due to misoperation when assembling the B-axis swing head unit 38, playing a safety interlocking role and ensuring the safety and reliability of the operation process;

[0020] (5) The utility model assembly flip platform can complete the entire assembly process from parts to finished product units. According to the different assembly requirements of the various parts of the swing head unit, the assembly station can be quickly switched. The whole process is smooth and reliable. It can be easily operated by one person, saving manpower and greatly improving production efficiency. More importantly, the smoothness and reliability of the flipping process of the swing head unit can completely eliminate the quality and safety hazards that may be caused by the original rigid flipping method, achieving twice the result with half the effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1, a schematic diagram of the main structure of a B-axis swing head assembly flip platform of a large-scale horizontal five-axis machining center of the utility model;

[0022] Figure 2 , a right-side structural schematic diagram of a B-axis swing head assembly flip platform of a large-scale horizontal five-axis machining center of the utility model;

[0023] Figure 3 , a rear view structural diagram of a B-axis swing head assembly flip platform of a large-scale horizontal five-axis machining center of the utility model;

[0024] Figure 4 、The utility model Figure 3 BB-direction cross-sectional structural diagram;

[0025] Figure 5 , a schematic diagram of the structure of the external gear slewing bearing of the utility model;

[0026] Figure 6 , a schematic diagram of the structure of the rotary disk of the utility model;

[0027] Figure 7 , a schematic structural diagram of the slewing bracket of the utility model.

[0028] Description of reference numerals:

[0029] 1. Rotating plate, 2. Rotating bracket, 3. Left auxiliary bracket, 4. Right auxiliary bracket, 5. Middle bracket, 6. Reducer support frame, 7. Intermediate rotating shaft, 8. Spacer, 9. Planar thrust needle roller bearing, 10. First locking nut, 11. Rear bearing pressure plate, 12. External gear slewing bearing, 13. Top plate, 14. Spring, 15. Positioning sleeve, 16. Baffle, 17. Positioning pin, 18. Cam knob, 19. Positioning cover, 20. Travel switch, 2 1. Switch slot cover, 22. Travel switch bracket, 23. Motor remote control switch box, 24. Control mounting plate, 25. Adjustment pad, 26. Angular contact ball bearing, 27. Gear shaft, 28. Reducer, 29. Second locking nut, 30. Cylindrical gear, 31. Anti-skid plate, 32. Rear bearing cover, 33. Bearing sleeve, 34. Gear bearing pressure cover, 35. Gear guard, 36. Deep groove ball bearing, 37. Front bearing pressure plate, 38. B-axis swing head unit. DETAILED DESCRIPTION

[0030] The following describes the specific implementation of the utility model in conjunction with embodiments:

[0031] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0032] Example 1

[0033] like Figures 1 to 4 As shown, the utility model discloses a large-scale horizontal five-axis machining center B-axis swing head assembly flip platform, including a turntable 1, a turntable support 2, a left auxiliary support 3, a right auxiliary support 4, a middle support 5 and a turntable mechanism, wherein the turntable mechanism is installed on the turntable support 2, the turntable mechanism is connected to one end surface of the turntable 1, and the other end surface of the turntable 1 is connected to the B-axis swing head unit 38, the left auxiliary support 3 is combined and connected with the left inclined surface of the turntable support 2, the right auxiliary support 4 is combined and connected with the right inclined surface of the turntable support 2, and the two sides of the middle support 5 are respectively connected to the left auxiliary support 3 and the right auxiliary support 4, so that the turntable support 2, the left auxiliary support 3, the right auxiliary support 4 and the middle support 5 are connected into a whole; the turntable mechanism includes a support turntable The rotating shaft system assembly, the rotating transmission shaft system assembly and the external gear slewing bearing 12, the left side of the supporting slewing shaft system assembly is installed in the central rear bearing hole of the rotating disk 1, and the right side of the supporting slewing shaft system assembly is installed in the central front bearing hole of the rotating bracket 2, the external gear slewing bearing 12 is sleeved on the outside of the middle position of the supporting slewing shaft system assembly, and the inner ring end face of the external gear slewing bearing 12 is fixedly connected to the rotating bracket 2, and the outer ring end face of the external gear slewing bearing 12 is fixedly connected to the rotating disk 1, and at the same time, the gear of the outer ring of the external gear slewing bearing 12 is meshed with the gear of the rotating transmission shaft system assembly, and the gear of the rotating transmission shaft system assembly rotates along the axis, driving the meshing external gear slewing bearing 12 to rotate, thereby driving the rotating disk 1 and the B-axis swing head unit 38 to rotate at any angle along the axis.

[0034] The B-axis swing head unit 38 is installed on the turntable 1, and the turntable 1 is connected to the slewing bracket 2 through a slewing mechanism. The left auxiliary bracket 3 and the right auxiliary bracket 4 are respectively connected to the slewing bracket 2 with bolts, and the connection of the three brackets adopts an inclined surface combination connection, which can decompose and transfer the 1800KG heavy load of the B-axis swing head unit 38 carried by the slewing bracket 2 and the load of the slewing bracket 2 to the left auxiliary bracket 3 and the right auxiliary bracket 4, and the left auxiliary bracket 3 and the right auxiliary bracket 4 are respectively connected with the middle bracket 5, so that each bracket is connected into a whole, which can effectively bear and ensure smooth and reliable rotation.

[0035] The left side and the right side described in this embodiment are relative to the swivel bracket 2, which can be referred to as Figure 1 .

[0036] Example 2

[0037] like Figure 4 , 7 As shown, preferably, the supporting rotating shaft system assembly includes an intermediate rotating shaft 7, a spacer sleeve 8, a plane thrust needle roller bearing 9, a first locking nut 10, a rear bearing pressure plate 11, a deep groove ball bearing 36 and a front bearing pressure plate 37, the spacer sleeve 8 is mounted on the intermediate rotating shaft 7, the inner ring of the deep groove ball bearing 36 is mounted on the outside of the spacer sleeve 8, the outer ring of the deep groove ball bearing 36 is mounted in the external gear rotating support 12, the front bearing pressure plate 37 is mounted and fixed on the left side of the intermediate rotating shaft 7, a plane thrust needle roller bearing 9 is arranged between the front bearing pressure plate 37 and the end face of the rotating plate 1, the rear bearing pressure plate 11 is mounted on the right side of the intermediate rotating shaft 7, a plane thrust needle roller bearing 9 is arranged between the rear bearing pressure plate 11 and the end face of the rotating bracket 2, and the first locking nut 10 is mounted on the intermediate rotating shaft 7 on the right side of the rear bearing pressure plate 11 to press the rear bearing pressure plate 11.

[0038] The intermediate rotating shaft 7 and the front bearing pressure plate 37, the front / rear plane thrust needle bearings 9, the front / rear deep groove ball bearings 36, the spacer sleeve 8, the locking nut 10, and the rear bearing pressure plate 11 constitute a supporting rotating shaft system, which is installed in the front and rear bearing holes in the center of the rotating disk 1 and the rotating bracket 2, and plays the role of auxiliary supporting the axial and radial loads of the rotating disk 1 and the B-axis swing head unit 38 installed thereon.

[0039] like Figure 4 , 5 As shown, preferably, the inner ring end face of the external gear slewing bearing 12 is fixedly connected to the left end face of the slewing bracket 2, the outer ring end face of the external gear slewing bearing 12 is fixedly connected to the right end face of the rotating disk 1, and gear guards 35 are provided on both sides of the external gear slewing bearing 12.

[0040] An external gear slewing bearing 12 is installed in front of the slewing bracket 2. The external gear slewing bearing 12 cooperates with the slewing disc 1 installed thereon to mainly bear the axial and radial loads of the auxiliary supporting slewing disc 1 and the B-axis swing head unit 38 installed thereon.

[0041] The left side and the right side (left end face and right end face) described in this embodiment are relative to the axial direction of the intermediate rotating shaft 7. The side close to the rotating disk 1 is the left side, and the side close to the rotating bracket 2 is the right side. Figure 4 .

[0042] Example 3

[0043] like Figure 4 , 7As shown, preferably, the rotary transmission shaft system assembly includes an angular contact ball bearing 26, a gear shaft 27, a reducer 28, a second locking nut 29, a cylindrical gear 30, a rear bearing cover 32, a bearing sleeve 33 and a gear bearing pressure cover 34. The gear shaft 27 is sleeved in the bearing hole of the bearing sleeve 33 and is arranged at the lower part of the external gear slewing bearing 12. The gear shaft 27 on both sides of the bearing sleeve 33 is also sleeved with angular contact ball bearings 26. The gear bearing pressure cover 34 is sleeved on the left side of the gear shaft 27 to press the angular contact ball bearing 26 on the left side. The rear bearing cover 32 is sleeved on the right side of the gear shaft 27 to press the outer ring of the angular contact ball bearing 26 on the right side. The second locking nut 29 presses the inner ring of the angular contact ball bearing 26 on the right side. A cylindrical gear 30 is installed at the front end of the gear shaft 27. The cylindrical gear 30 is meshed with the gear of the external gear slewing bearing 12 for transmission. The right end of the gear shaft 27 is keyed to the reducer 28.

[0044] The gear shaft 27 and the front / rear angular contact ball bearings 26, the bearing sleeve 33, and the second locking nut 29 form a rotary transmission shaft system. The transmission rotary shaft system is installed in the bearing hole of the lower part of the rotary bracket 2 and the bearing sleeve 33, and is respectively pressed and positioned from the left and right ends by the gear bearing pressure cover 34 and the rear bearing cover 32; the cylindrical gear 30 is installed at the left end of the gear shaft 27, and the gear meshing transmission between the cylindrical gear 30 and the external gear rotary support 12 is transmitted. The right end of the gear shaft 27 is connected to the reducer 28 and is driven by a key connection, and the rotary disk 1 and the B-axis swing head unit 38 on the external gear rotary support 12 are driven to perform low-speed rotary motion around their rotation center.

[0045] Example 4

[0046] like Figure 4 As shown, preferably, a positioning assembly is installed at the upper end of the slewing bracket 2, and the positioning assembly includes a spring 14, a positioning sleeve 15, a baffle 16, a positioning pin 17, a cam-type knob 18, a positioning pressure cover 19, a travel switch 20, a switch slot cover 21, and a travel switch bracket 22. A top plate 13 is provided on the top of the slewing bracket 2, and the positioning sleeve 15 is installed on the top plate 13. A positioning pin 17 and a spring 14 are installed in the hole of the positioning sleeve 15. The spring 14 is sleeved on the positioning pin 17. A positioning pressure cover 19 is provided on the right end of the positioning sleeve 15 to limit the positioning sleeve 15. A baffle 16 and a cam-type knob are installed on the right end of the positioning pin 17. The knob 18 and the baffle 16 are connected to one end of the spring 14, and the other end of the spring 14 is connected to the inner wall of the positioning sleeve 15. The cam knob 18 passes through the baffle 16 and is fixedly connected to the positioning pin 17. A travel switch bracket 22 is provided at the bottom of the positioning sleeve 15, and a travel switch 20 is installed on the travel switch bracket 22. A switch slot cover plate 21 is provided on the top of the travel switch 20. The bottom of the baffle 16 is at the same height as the bottom of the travel switch 20. When the cam knob 18 is pulled to the right, the cam knob 18 drives the positioning pin 17 to move to the right to stretch the spring 14, and the baffle 16 moves with the positioning pin 17 to press the contact of the travel switch 20.

[0047] A positioning sleeve 15 is installed at the upper end of the rotating bracket 2, and a positioning pin 17 and a spring 14 are installed in the hole of the positioning sleeve 15, and a baffle 16 and a cam knob 18 are installed at the right end of the positioning pin 17; when the B-axis swing head unit 38 and the turntable 1 slowly rotate to the assembly station, the front end of the positioning pin 17 is inserted into the positioning hole of the turntable 1, which can ensure the stability and safety of the B-axis swing head unit 38 at the assembly station.

[0048] like Figure 4 , 6 As shown, preferably, a positioning hole is provided at a position of the rotating disk 1 corresponding to the positioning pin 17 near the rotating bracket 2 , and when the cam knob 18 is released, the spring 14 contracts to insert the left end of the positioning pin 17 into the positioning hole of the rotating disk 1 .

[0049] Example 5

[0050] like Figure 4 As shown, preferably, a reducer support frame 6 is installed on the middle bracket 5, an adjustment pad 25 is arranged on the top of the reducer support frame 6, a reducer 28 is fixed on the adjustment pad 25, the reducer 28 is connected to the motor, the motor is electrically connected to the motor remote control switch box 23, the motor remote control switch box 23 is fixed on the control mounting plate 24, the travel switch 20 is electrically connected to the motor remote control switch box 23, and the motor control circuit of the control reducer 28 is controlled to be closed or disconnected.

[0051] The reducer 28 is installed on the reducer support frame 6, and the start and stop of the reducer 28 is controlled by the motor remote control switch box 23 and its remote control; before the reducer 28 is started, the cam knob 18 is pulled to drive the positioning pin 17 to move backward and disengage from the positioning hole of the turntable 1, and the lower end of the baffle 16 at the right end of the positioning pin 17 presses the contact of the travel switch 20 installed on the travel switch bracket 22 to control the motor control circuit of the reducer 28 to be closed. When the front end of the positioning pin 17 is inserted into the positioning hole of the turntable 1 (i.e., the assembly station), the contact of the travel switch 20 is disengaged, and the reducer 28 cannot be started, ensuring that the reducer 28 will not be started due to misoperation at the assembly station of the B-axis swing head unit 38, playing a safety interlocking role to ensure the safety and reliability of the operation process.

[0052] like Figure 4 As shown, preferably, an anti-skid plate 31 is provided on the top of the left auxiliary bracket 3 and the right auxiliary bracket 4.

[0053] The innovative structural design of each part of the swing head assembly flip platform of the utility model effectively ensures that the assembly process of the B-axis swing head unit 38 from parts to finished products is relatively simple and controllable.

[0054] The working principle of the utility model is as follows:

[0055] like Figures 1 to 7 As shown, the utility model discloses a B-axis swing head assembly and flipping platform for a large-scale horizontal five-axis machining center, comprising a turntable 1, a turntable bracket 2, a left auxiliary bracket 3, a right auxiliary bracket 4, a middle bracket 5 and a turntable mechanism. One end of the turntable 1 is connected to the turntable bracket 2 through the turntable mechanism, and the other end face of the turntable 1 is connected to the B-axis swing head unit 38. The left side face of the turntable bracket 2 is combined and connected with the left auxiliary bracket 3, and the right side face of the turntable bracket 2 is combined and connected with the left auxiliary bracket 3. The two sides of the middle bracket 5 are respectively connected to the left auxiliary bracket 3 and the right auxiliary bracket 4. The turntable transmission shaft system component of the turntable mechanism is meshed with the external gear turntable 12, and the outer ring of the external gear turntable 12 is connected to the turntable 1. When the gear of the turntable transmission shaft system component rotates along the axis, it drives the external gear turntable 12 meshed therewith to rotate, thereby driving the turntable 1 and the B-axis swing head unit 38 to rotate along the axis at any angle, thereby realizing the smooth flipping of the swing head unit 38.

[0056] The utility model discloses a B-axis swing head assembly flip platform for a large-scale horizontal five-axis machining center. The assembly process and test requirements of the B-axis swing head unit are comprehensively considered, and the swing head box is fixed on the assembly flip platform. During the assembly process, the swing head box is flipped to any workstation according to the installation requirements of each component until the entire B-axis swing head unit is assembled, and then the B-axis swing head unit is subjected to relevant test operations on the assembly flip platform.

[0057] The utility model assembly flip platform consists of a turntable, a turntable bracket, a left auxiliary bracket, a right auxiliary bracket, a middle bracket and a turntable mechanism. The left auxiliary bracket is connected to the left inclined surface of the turntable bracket, the right auxiliary bracket is connected to the right inclined surface of the turntable bracket, the two sides of the middle bracket are respectively connected to the left auxiliary bracket and the right auxiliary bracket, the turntable bracket is connected to the turntable mechanism, and the turntable mechanism is connected to the turntable. The connection and combination method of each bracket of the utility model can reasonably decompose the load to each part of the bracket, and can withstand heavy loads under the premise of reducing the weight of the bracket body as much as possible.

[0058] The reducer of the rotary transmission shaft system assembly of the utility model drives the cylindrical gear to rotate, the cylindrical gear is meshed with the gear of the external gear slewing bearing, the outer ring of the external gear slewing bearing is connected to the rotary plate, thereby driving the B-axis swing head unit to rotate at any angle. This flipping method can make the flipping process of parts with irregular shapes and heavy weight smooth and reliable.

[0059] The utility model is also provided with a positioning assembly. When the cam knob is pulled to the right, the cam knob drives the positioning pin to move to the right to stretch the spring. The baffle plate moves with the positioning pin and presses the contact of the travel switch to close the motor control circuit of the reducer, thereby flipping the B-axis swing head unit. When the cam knob is released, the baffle plate is disconnected from the travel switch to disconnect the motor control circuit of the reducer. At the same time, the spring contracts to insert the left end of the positioning pin into the positioning hole of the turntable, ensuring that the reducer will not be started due to misoperation during the assembly station of the B-axis swing head unit 38, thereby playing a safety interlocking role and ensuring the safety and reliability of the operation process.

[0060] The assembly flipping platform of the utility model can complete the entire assembly process from parts to finished product units. According to the different assembly requirements of the components of the swing head unit, the assembly station can be quickly switched, and the whole process is smooth and reliable. It can be easily operated by one person, saving manpower and greatly improving production efficiency. More importantly, the smoothness and reliability of the flipping process of the swing head unit can completely eliminate the quality and safety hazards that may be caused by the original rigid flipping method, achieving the effect of getting twice the result with half the effort.

[0061] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention.

[0062] Many other changes and modifications can be made without departing from the concept and scope of the utility model. It should be understood that the utility model is not limited to a specific embodiment, and the scope of the utility model is defined by the appended claims.

Claims

1. A large-scale horizontal five-axis machining center B-axis swing head assembly flip platform, characterized in that: The invention comprises a rotary disk (1), a rotary bracket (2), a left auxiliary bracket (3), a right auxiliary bracket (4), a middle bracket (5) and a rotary mechanism, wherein the rotary mechanism is mounted on the rotary bracket (2), the rotary mechanism is connected to one end surface of the rotary disk (1), the other end surface of the rotary disk (1) is connected to a B-axis swing head unit (38), the left auxiliary bracket (3) is combined and connected to the left inclined surface of the rotary bracket (2), the right auxiliary bracket (4) is combined and connected to the right inclined surface of the rotary bracket (2), and the two sides of the middle bracket (5) are respectively connected to the left auxiliary bracket (3) and the right auxiliary bracket (4), so that the rotary bracket (2), the left auxiliary bracket (3), the right auxiliary bracket (4) and the middle bracket (5) are connected to form a whole; the rotary mechanism comprises a supporting rotary shaft system component, a rotary transmission component, and a rotary transmission component. The driving shaft system component and the external gear slewing bearing (12) are installed in the center rear bearing hole of the slewing disk (1) on the left side of the supporting slewing shaft system component, and the center front bearing hole of the slewing bracket (2) on the right side of the supporting slewing shaft system component. The external gear slewing bearing (12) is sleeved outside the middle position of the supporting slewing shaft system component, and the inner ring end face of the external gear slewing bearing (12) is fixedly connected to the slewing bracket (2), and the outer ring end face of the external gear slewing bearing (12) is fixedly connected to the slewing disk (1). At the same time, the gear of the outer ring of the external gear slewing bearing (12) is meshed with the gear of the slewing transmission shaft system component. The gear of the slewing transmission shaft system component rotates along the axis, driving the meshed external gear slewing bearing (12) to rotate, thereby driving the slewing disk (1) and the B-axis swing head unit (38) to rotate at any angle along the axis.

2. According to claim 1, a large-scale horizontal five-axis machining center B-axis swing head assembly turning platform is characterized in that: The supporting rotary shaft system assembly comprises an intermediate rotating shaft (7), a spacer sleeve (8), a plane thrust needle roller bearing (9), a first locking nut (10), a rear bearing pressure plate (11), a deep groove ball bearing (36) and a front bearing pressure plate (37), wherein the spacer sleeve (8) is mounted on the intermediate rotating shaft (7), the inner ring of the deep groove ball bearing (36) is mounted on the outer side of the spacer sleeve (8), the outer ring of the deep groove ball bearing (36) is mounted in the external gear rotary bearing (12), and the front bearing pressure plate (37) is mounted on the outer gear rotary bearing (12). The sleeve is fixed on the left side of the intermediate rotating shaft (7), a planar thrust needle roller bearing (9) is arranged between the front bearing pressure plate (37) and the end surface of the rotating plate (1), the rear bearing pressure plate (11) is sleeved on the right side of the intermediate rotating shaft (7), a planar thrust needle roller bearing (9) is arranged between the rear bearing pressure plate (11) and the end surface of the rotating bracket (2), and the first locking nut (10) is sleeved on the intermediate rotating shaft (7) on the right side of the rear bearing pressure plate (11) to press the rear bearing pressure plate (11).

3. According to claim 2, a large-scale horizontal five-axis machining center B-axis swing head assembly turning platform is characterized in that: The inner ring end face of the external gear slewing bearing (12) is fixedly connected to the left end face of the slewing bracket (2), the outer ring end face of the external gear slewing bearing (12) is fixedly connected to the right end face of the slewing disc (1), and gear guards (35) are provided on both sides of the external gear slewing bearing (12).

4. The B-axis swing head assembly turning platform of a large-scale horizontal five-axis machining center according to claim 3 is characterized in that: The rotary transmission shaft system assembly comprises an angular contact ball bearing (26), a gear shaft (27), a reducer (28), a second locking nut (29), a cylindrical gear (30), a rear bearing cover (32), a bearing sleeve (33) and a gear bearing cover (34); the gear shaft (27) is sleeved in a bearing hole of the bearing sleeve (33) and is arranged at the lower part of the external gear rotary support (12); the gear shaft (27) on both sides of the bearing sleeve (33) is also sleeved with an angular contact ball bearing (26); the gear bearing cover (34) is sleeved with a second locking nut (29), a cylindrical gear (30), a rear bearing cover (32), a bearing sleeve (33) and a gear bearing cover (34); 4) is mounted on the left side of the gear shaft (27) to press the angular contact ball bearing (26) on the left side, the rear bearing cover (32) is mounted on the right side of the gear shaft (27) to press the outer ring of the angular contact ball bearing (26) on the right side, the second locking nut (29) presses the inner ring of the angular contact ball bearing (26) on the right side, a cylindrical gear (30) is installed at the front end of the gear shaft (27), the cylindrical gear (30) is meshed with the gear of the external gear slewing bearing (12) for transmission, and the right end of the gear shaft (27) is keyed to a reducer (28).

5. The B-axis swing head assembly turning platform of a large-scale horizontal five-axis machining center according to claim 4 is characterized in that: A positioning assembly is installed at the upper end of the slewing bracket (2), and the positioning assembly includes a spring (14), a positioning sleeve (15), a baffle (16), a positioning pin (17), a cam-type knob (18), a positioning cover (19), a travel switch (20), a switch slot cover (21), and a travel switch bracket (22). A top plate (13) is arranged on the top of the slewing bracket (2), the positioning sleeve (15) is installed on the top plate (13), a positioning pin (17) and a spring (14) are installed in a hole of the positioning sleeve (15), the spring (14) is sleeved on the positioning pin (17), a positioning cover (19) is arranged at the right end of the positioning sleeve (15) to limit the positioning sleeve (15), and a baffle (16) and a cam-type knob (18) are installed at the right end of the positioning pin (17). 18), the baffle (16) is connected to one end of the spring (14), the other end of the spring (14) is connected to the inner wall of the positioning sleeve (15), the cam knob (18) passes through the baffle (16) and is fixedly connected to the positioning pin (17), a travel switch bracket (22) is arranged at the bottom of the positioning sleeve (15), a travel switch (20) is installed on the travel switch bracket (22), a switch slot cover plate (21) is arranged on the top of the travel switch (20), the bottom of the baffle (16) and the bottom of the travel switch (20) are at the same height, when the cam knob (18) is pulled to the right, the cam knob (18) drives the positioning pin (17) to move to the right, so that the spring (14) is stretched, and the baffle (16) moves with the positioning pin (17) to press the contact of the travel switch (20).

6. The B-axis swing head assembly turning platform of a large-scale horizontal five-axis machining center according to claim 5 is characterized in that: The rotary disk (1) is provided with a positioning hole at a position close to the rotary bracket (2) corresponding to the positioning pin (17); when the cam knob (18) is released, the spring (14) contracts so that the left end of the positioning pin (17) is inserted into the positioning hole of the rotary disk (1).

7. The B-axis swing head assembly turning platform of a large-scale horizontal five-axis machining center according to claim 5 is characterized in that: A reducer support frame (6) is mounted on the middle bracket (5), an adjustment pad (25) is arranged on the top of the reducer support frame (6), the reducer (28) is fixed on the adjustment pad (25), the reducer (28) is connected to the motor, the motor is electrically connected to the motor remote control switch box (23), the motor remote control switch box (23) is fixed on the control mounting plate (24), the travel switch (20) is electrically connected to the motor remote control switch box (23), and controls the motor control circuit of the reducer (28) to be closed or opened.

8. The B-axis swing head assembly turning platform of a large-scale horizontal five-axis machining center according to claim 1 is characterized in that: Anti-slip plates (31) are provided on the tops of the left auxiliary bracket (3) and the right auxiliary bracket (4).

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