CN116475775A - Cradle type third harmonic five-axis turntable - Google Patents
Cradle type third harmonic five-axis turntable Download PDFInfo
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- CN116475775A CN116475775A CN202210039780.5A CN202210039780A CN116475775A CN 116475775 A CN116475775 A CN 116475775A CN 202210039780 A CN202210039780 A CN 202210039780A CN 116475775 A CN116475775 A CN 116475775A
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- 230000009467 reduction Effects 0.000 claims abstract description 57
- 238000009434 installation Methods 0.000 claims abstract description 9
- 230000001360 synchronised effect Effects 0.000 claims description 25
- 239000003921 oil Substances 0.000 claims description 17
- 230000007704 transition Effects 0.000 claims description 17
- 239000003638 chemical reducing agent Substances 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 11
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 2
- 230000003068 static effect Effects 0.000 description 19
- 230000005540 biological transmission Effects 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000003754 machining Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a cradle type third harmonic five-axis turntable, which comprises: the horizontal rotating piece comprises a horizontal rotating driving piece, a horizontal rotating driven piece and a cradle shell, wherein the horizontal rotating driving piece and the horizontal rotating driven piece are both installed on an installation seat, and the cradle shell is arranged on the horizontal rotating driving piece and the horizontal rotating driven piece and is driven by the horizontal rotating driving piece to circumferentially rotate along a horizontal axis; the tilting rotating piece comprises a power driving piece and a speed reduction output piece, the power driving piece is arranged in a power driving cavity of the cradle shell, and the speed reduction output piece is arranged in a speed reduction output cavity of the cradle shell; the power driving part inputs power to the speed reduction output part, and drives the clamped workpiece to be processed to rotate circumferentially after the power is subjected to speed reduction output through the speed reduction output part. The invention has high processing precision, high output rigidity, small weight and size of the whole machine, low cost and extremely convenient disassembly, assembly and replacement.
Description
Technical Field
The invention relates to the technical field of machine tool accessories, in particular to a cradle type third harmonic five-axis turntable.
Background
The cradle type five-axis turntable is an executive component in a machine tool system, and can form a fourth axis and a fifth axis in a machine tool moving axis, so that parts with more complex appearance shapes can be machined or one-time clamping is realized through four-axis linkage or five-axis linkage during machining of the machine tool, the machining shape range of a common 3-axis CNC (computerized numerical control) can be expanded on one hand, and the integral machining precision of the parts can be improved on the other hand by reducing the clamping frequency.
Currently, cradle type five-axis turntable on the market can be divided into worm and gear drive and direct drive motor drive from the driving principle. The worm gear drive realizes the conversion of the low torque and high rotation speed of the servo motor into the high torque and low rotation speed required by processing by utilizing the characteristics of high reduction ratio transmission, self-locking property and the like of the worm gear, and is used by most cradle type five-axis manufacturers due to the characteristics of mature manufacturing process, stable transmission and the like. However, in principle, the transmission of the worm and the worm gear belongs to hard extrusion transmission, and due to self-locking requirement, the transmission pressure angle is generally smaller, so that the transmission efficiency is very low, the heating is serious, and one or both of the worm and the worm is often required to be soaked in lubricating oil for movement, so that higher requirements are made on the tightness of the whole turntable. Moreover, due to the special nature of materials for manufacturing worm gears, special metals such as tin bronze are often required to be used for manufacturing, so that the worm gears are easy to wear in the movement process, and after the precision is adjusted in the initial stage, the worm gears are often operated for a period of time, and the wear clearance of the worm gears needs to be adjusted to obtain the set reverse clearance and precision.
The direct-drive motor driving can be understood as driving by using a servo motor with large torque output, the objective table is directly connected with the motor shaft, and the middle part is not through a speed reducing mechanism, so that the transmission link in the middle is reduced, the rotation precision of the objective table is the output precision of the motor shaft, and the motor can be integrally provided with high output precision by using a high-precision grating ruler. However, compared with worm and gear transmission, the device has the advantages that the efficiency and the precision are greatly improved and the abrasion in the transmission process is avoided due to the fact that a middle speed reduction transmission mechanism is omitted, but the device is complex in manufacture and high in cost, and on one hand, if high output precision is obtained, a high-precision grating ruler with high price is required to be provided; on the other hand, as the rotating shaft of the motor is directly connected with the object stage, the load inertia of the motor needs to be matched with a motor shaft, so that the rotational inertia of a processed workpiece is limited; moreover, because of the direct connection transmission, if large external impact such as a knife collision occurs in the processing process, the output precision of the device can be directly influenced and even the main body structure is damaged because of no buffer of the middle speed reducing mechanism.
Moreover, the conventional processing technology generally needs lower rotating speed and higher torque, and the servo motor is easy to generate a creeping phenomenon under the operation working condition, so that the efficiency is lower, the heating is serious, on one hand, a part of processing precision can be lost due to the influence of heat, and on the other hand, a cooling device is needed to be arranged on the whole machine, so that the complexity of the structure is increased, and the manufacturing cost and difficulty of the whole machine are increased. In conclusion, the cradle type turntable driven by the worm and gear has low efficiency, complex whole machine sealing and poor precision maintaining performance; the direct-drive motor drive has high manufacturing cost under the condition of high precision, the manufacturing process is complex, and a water cooling system is generally required to be installed, so that the complexity of the whole system is increased. The two cradle type five-axis rotary tables have obvious defects.
Disclosure of Invention
In order to overcome the defects, the invention provides a cradle type third harmonic five-axis turntable, which adopts the following technical scheme:
a cradle type third harmonic five-axis turntable, comprising:
the horizontal rotating piece comprises a horizontal rotating driving piece, a horizontal rotating driven piece and a cradle shell, wherein the horizontal rotating driving piece and the horizontal rotating driven piece are both installed on an installation seat, and the cradle shell is arranged on the horizontal rotating driving piece and the horizontal rotating driven piece and is driven by the horizontal rotating driving piece to circumferentially rotate along a horizontal axis;
the tilting rotating piece is arranged on the cradle shell and comprises a power driving piece and a speed reduction output piece, wherein the power driving piece is arranged in a power driving cavity of the cradle shell, and the speed reduction output piece is arranged in a speed reduction output cavity of the cradle shell; the power driving part inputs power to the speed reduction output part, and drives the clamped workpiece to be processed to rotate circumferentially after the power is subjected to speed reduction output through the speed reduction output part.
Preferably, the horizontal rotation follower comprises an auxiliary support provided on the mount and a horizontal circumferential brake provided on the auxiliary support; the auxiliary supporting piece is used for supporting the cradle shell to rotate in an auxiliary mode, and the horizontal circumferential braking piece brakes the cradle shell according to positioning requirements.
Preferably, the auxiliary support piece comprises a driven support shell, a first crossed roller bearing, a tailstock rotating shaft and a tailstock transition sleeve, wherein the driven support shell is arranged on the mounting seat, an outer ring of the first crossed roller bearing is fixedly embedded in an inner cavity of the driven driving shell, the tailstock rotating shaft is fastened on one end face of an inner ring of the first crossed roller bearing, the tailstock transition sleeve is fastened on the other end face of the inner ring of the first crossed roller bearing, and one end of the inner cavity of the driven support shell is sealed through a first sealing piece by the tailstock rotating shaft.
Preferably, the horizontal circumferential braking piece comprises a hydraulic braking moving disc, a hydraulic braking static disc, a brake cylinder and a hydraulic braking piston, wherein the hydraulic braking moving disc is fixedly sleeved outside the tailstock transition sleeve, the hydraulic braking static disc and the brake cylinder are simultaneously fastened on a straight port at the other end of the inner cavity of the driven supporting shell, the hydraulic braking static disc is positioned on one side of the hydraulic braking moving disc, and a gap with a preset width is formed between the hydraulic braking static disc and the hydraulic braking moving disc; the brake cylinder seals the other end of the inner cavity of the driven support shell through a second sealing piece.
Preferably, the hydraulic brake piston is embedded in the inner cavity of the brake cylinder, and the hydraulic brake piston is positioned at the other side of the hydraulic brake rotor disc, and meanwhile, the hydraulic brake piston forms a closed cavity in the brake cylinder, so that the hydraulic brake piston slides back and forth in the axial direction in the brake cylinder when the pressure in the closed cavity changes.
Preferably, one end of the cradle housing is horizontally fastened on the output disc of the horizontal rotation driving member, and the other end of the cradle housing is horizontally fastened on the free end of the tailstock rotating shaft.
Preferably, the power driving part comprises a motor shell, a motor stator, a motor rear end cover, a rotor, a motor rotating shaft and a high-precision encoder, wherein the motor shell is fastened in the power driving cavity, the motor stator is pressed in the motor shell, the motor rear end cover is fastened on the motor shell, the rotor is mounted on the motor rotating shaft, the motor rotating shaft is embedded and positioned on the motor rear end cover through a first sleeved bearing, the motor rotating shaft is embedded and positioned on the motor shell through a second sleeved bearing, and a first synchronous belt wheel is fixedly sleeved on the other end of the motor rotating shaft; and a power line and a signal line on the power driving piece sequentially pass through a circuit tube reserved in the cradle shell and the output shaft of the horizontal rotation driving piece and are electrically connected with a wiring terminal on the horizontal rotation driving piece.
Preferably, the speed reduction output piece comprises a third harmonic speed reducer, a harmonic input shaft, a harmonic end cover, a speed reduction output shaft, an output chuck, a protection tube and an inclined rotation brake piece, wherein the third harmonic speed reducer and the inclined rotation brake piece are both arranged in the speed reduction output cavity; the third harmonic speed reducer comprises a steel wheel, a flexible wheel and a wave generator, wherein the steel wheel is fastened on the inner ring of a second crossed roller bearing, the outer ring of the second crossed roller bearing is fastened in the speed reduction output cavity, the flexible wheel is embedded in the steel wheel, and the wave generator is embedded in the flexible wheel; the harmonic wave input shaft one end is arranged on the wave generator, the harmonic wave end cover is fastened on the outer ring of the second crossed roller bearing, the speed reduction output shaft is fastened on the free end surface of the steel wheel, the output chuck is fastened on the free end of the speed reduction output shaft, one end of the protection tube is fastened on the speed reduction output shaft, the protection tube is embedded in the harmonic wave input shaft, the power driving cavity and the port of the speed reduction output cavity are fastened with a bottom plate, and the bottom plate is penetrated by one end of the protection tube.
Preferably, a second synchronous pulley is arranged at one end of the harmonic input shaft, and the second synchronous pulley is connected with the first synchronous pulley through a synchronous belt; the base plate on hold-in range limit is provided with band pulley tensioning piece, band pulley tensioning piece includes band pulley support, auxiliary stand, idler, third jump ring and dabber, the band pulley support fastening is in the spout of base plate, the auxiliary stand sets up on the band pulley support, the dabber both ends set up respectively the band pulley support with on the auxiliary stand, idler and third jump ring all suit are in on the dabber.
Preferably, the inclined rotating brake piece and the horizontal circumferential brake piece have the same structure, the same installation mode and the same operation principle; hydraulic oil required by the tilting rotation braking part is injected from a hydraulic rotation joint arranged on the driven supporting shell and enters the tilting rotation braking part through an oil way in the cradle shell.
The invention at least comprises the following beneficial effects:
1) According to the cradle type third harmonic five-axis turntable, the power driving piece and the third harmonic speed reducer are arranged in parallel, so that the axial installation space can be greatly reduced, meanwhile, the light weight treatment is greatly realized, the whole size and weight of the cradle shell are thinner and lighter than those of a worm gear and a direct drive motor, better dynamic motion performance can be realized, and the whole machining precision is improved;
2) Compared with a worm gear and a worm gear, the cradle type third harmonic five-axis turntable does not need to be injected with lubricating oil in a cradle shell, so that the structure is greatly simple and convenient in the design of tightness, and only the external static water seal is needed to be considered; compared with direct drive, the three-harmonic speed reducer with larger reduction ratio is used, so that on one hand, the dependence on an expensive high-precision encoder can be reduced by means of the high-precision output of the three-harmonic speed reducer, and the three-harmonic speed reducer is convenient, and due to the output buffer protection effect of the three-harmonic speed reducer, even if a serious knife collision occurs in the use process, the whole precision is not influenced excessively, and the speed reducer is in a modularized design, so that the whole assembly, disassembly and replacement are extremely convenient; compared with the output precision and rigidity of the worm gear and the direct drive motor, the weight and the size of the whole machine can be greatly optimized on the premise that the precision and the rigidity are not lower than the two, and meanwhile, the manufacturing cost is low;
3) According to the cradle type third harmonic five-axis turntable, the third harmonic speed reducer, the crossed roller bearing and the large-sized deep groove ball bearing are matched on the inclined rotating piece, so that high axial load can be met, a general offset bending moment scene can be met, and high output precision and high rigidity of the whole machine are ensured; in the aspect of later maintenance through reasonable structural design, the tightness degree of the synchronous belt pulley can be adjusted only by removing the bottom plate, the problem of leakage of internal grease is avoided, the synchronous belt is used at the high-speed input end of the third harmonic speed reducer, the general transmission torque is small, and the transmission precision and rigidity are further ensured.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a front view of a cradle type third harmonic five-axis turntable of the present invention;
FIG. 2 is a top view of the cradle type third harmonic five-axis turntable of the present invention;
FIG. 3 is a schematic view of the left side three-dimensional structure of the cradle type third harmonic five-axis turntable;
FIG. 4 is a schematic view of the right side three-dimensional structure of the cradle type third harmonic five-axis turntable;
FIG. 5 is a schematic view of the rear side three-dimensional structure of the cradle type third harmonic five-axis turntable of the present invention;
FIG. 6 is a front view of the cradle style third harmonic five-axis turntable of the present invention in section along the A-A direction in FIG. 2;
FIG. 7 is a schematic view of a sectional perspective view of the cradle type third harmonic five-axis turntable of the present invention in the direction A-A in FIG. 2;
FIG. 8 is a front view of the cradle type third harmonic five-axis turntable of the present invention in section in the direction B-B of FIG. 1;
FIG. 9 is a schematic perspective view of the cradle type third harmonic five-axis turntable of the present invention in the B-B direction section in FIG. 1;
fig. 10 is a cross-sectional view of a pulley tensioner in a cradle type third harmonic five-axis turntable of the present invention.
Wherein: the hydraulic power generation device comprises a 1-mounting seat, a 2-horizontal rotation driving part, a 3-cradle shell, a 4-driven supporting shell, a 5-first crossed roller bearing, a 6-tailstock rotating shaft, a 7-tailstock transition sleeve, an 8-sliding block, a 10-hydraulic brake rotor, a 11-hydraulic brake static disc, a 12-brake cylinder, a 13-hydraulic brake piston, a 14-second oil seal, a 15-first oil nozzle, a 16-motor shell, a 17-motor stator, a 18-motor rear end cover, a 19-rotor, a 20-motor rotating shaft, a 21-high precision encoder, a 22-first synchronous pulley, a 23-wiring terminal, a 24-harmonic input shaft, a 25-harmonic end cover, a 26-speed reduction output shaft, a 27-output chuck, a 28-protection tube, a 29-steel wheel, a 30-flexible wheel, a 31-wave generator, a 32-second crossed roller bearing, a 33-first bearing, a 34-second bearing, a 35-third bearing, a 36-fourth bearing, a 37-groove ball bearing, a 38-bottom plate, a 40-second synchronous pulley, a 41-high rigidity synchronous belt, a 42-idle pulley, a 43-carrier, a 45-auxiliary support, a 45-idle spring, a 48-second carrier, a 48-auxiliary carrier, a 48-rotating clamp spring, a 48-carrier, a second carrier, a 48-auxiliary adapter, a 48-clamp spring, a 48-connector, and a mounting frame.
Detailed Description
The technical solution of the present invention will be described in detail below by way of examples with reference to the accompanying drawings. It should be noted that the description of these examples is for aiding in understanding the present invention, but is not intended to limit the present invention.
The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: the terms "/and" herein describe another associative object relationship, indicating that there may be two relationships, e.g., a/and B, may indicate that: the character "/" herein generally indicates that the associated object is an "or" relationship.
According to the figures 1-10, a cradle type third harmonic five-axis turntable comprises a horizontal rotating member and a tilting rotating member, wherein the tilting rotating member is arranged on the horizontal rotating member. The horizontal rotating member comprises a horizontal rotating driving member 2, a horizontal rotating driven member and a cradle shell 3, wherein the horizontal rotating driving member 2 is arranged at one end of the mounting seat 1, the horizontal rotating driven member is arranged at the other end of the mounting seat 1, and the cradle shell 3 is arranged on the horizontal rotating driving member 2 and the horizontal rotating driven member. The structure of the horizontal rotation driving member 2 is described in the patent of the applicant's prior application, and is named: third harmonic drive fourth axis turntable with output brake, patent application number is: 2021101564815. the horizontal rotating member is mainly responsible for driving the cradle housing 3 to rotate along the circumferential direction of the horizontal axis. The horizontal rotation driving part 2 is arranged at one end of the mounting seat 1.
The horizontal rotation driven member comprises an auxiliary supporting member and a horizontal circumferential braking member, wherein the auxiliary supporting member is arranged on the mounting seat 1, and the horizontal circumferential braking member is arranged on the auxiliary supporting member. The auxiliary support piece comprises a driven support shell 4, a first crossed roller bearing 5, a tailstock rotating shaft 6 and a tailstock transition sleeve 7, wherein the driven support shell 4 is installed on the other end of the installation seat 1 through the auxiliary installation positioning function of a sliding block 8 arranged on the bottom surface. The first crossed roller bearing 5 is arranged on the driven supporting shell 4, and the tailstock rotating shaft 6 and the tailstock transition sleeve 7 are both arranged on the first crossed roller bearing 5. The outer ring of the first crossed roller bearing 5 is embedded in a straight port at one end of the inner cavity of the driven driving shell through a first screw. The tailstock rotating shaft 6 is fastened on one end face of the inner ring of the first crossed roller bearing 5 through a second screw, a first O-shaped ring is arranged between the tailstock rotating shaft 6 and the inner ring of the first crossed roller bearing 5, and the first O-shaped ring enables static seal to be kept between the tailstock rotating shaft 6 and the first crossed roller bearing 5. Meanwhile, a first oil seal is sleeved outside the tailstock rotating shaft 6, and the first oil seal enables dynamic seal to be kept between the tailstock rotating shaft 6 and the inner cavity of the driven support shell 4. The tailstock transition sleeve 7 is fastened on the other end face of the inner ring of the first crossed roller bearing 5 through a third screw, a second O-shaped ring is arranged between the tailstock transition sleeve 7 and the inner ring of the first crossed roller bearing 5, and the second O-shaped ring enables static seal to be kept between the tailstock transition sleeve 7 and the first crossed roller bearing 5. And the tailstock rotating shaft 6 seals one end of the inner cavity of the driven support shell 4 through the first oil seal and the first O-shaped ring. When the spatial position of a workpiece to be machined needs to be horizontally rotated and adjusted, the cradle shell 3 arranged on the horizontal rotation driving piece 2 and the horizontal rotation driven piece simultaneously is horizontally and circumferentially rotated by the horizontal rotation driving piece 2.
The horizontal circumferential braking part comprises a hydraulic braking rotor 10, a hydraulic braking rotor 11, a brake cylinder 12 and a hydraulic braking piston 13, wherein the hydraulic braking rotor 10 is arranged on the tailstock transition sleeve 7, the hydraulic braking rotor 11 and the brake cylinder 12 are both arranged on the driven supporting shell 4, and the hydraulic braking piston 13 is arranged on the brake cylinder 12. The hydraulic brake rotor 10 is fastened and sleeved outside the tailstock transition sleeve 7 through a fourth screw, and the hydraulic brake rotor 10 rotates along with the rotation of the tailstock transition sleeve 7. The hydraulic brake static disc 11 and the brake cylinder 12 are simultaneously fastened on the straight port at the other end of the inner cavity of the driven support shell 4 through fifth screws, the hydraulic brake static disc 11 is positioned on one side of the hydraulic brake dynamic disc 10, and a gap with a preset width is formed between the hydraulic brake static disc 11 and the hydraulic brake dynamic disc 10. A third O-ring is arranged between the brake cylinder 12 and the inner cavity of the driven support shell 4, and the third O-ring keeps static seal between the brake cylinder 12 and the inner cavity of the driven support shell 4. The second oil seal 14 is embedded in the inner ring of the brake cylinder 12, and the second oil seal 14 enables dynamic sealing to be kept between the brake cylinder 12 and the tailstock transition sleeve 7. The brake cylinder 12 seals the other end of the inner cavity of the driven support shell 4 through the second oil seal 14 and the third O-shaped ring.
The hydraulic brake piston 13 is embedded in the inner cavity of the brake cylinder 12, and the hydraulic brake piston 13 is positioned on the other side of the hydraulic brake rotor 10, so that the hydraulic brake piston 13 can slide back and forth in the axial direction in the brake cylinder 12. The outer ring surface of the hydraulic brake piston 13 is sleeved with a fourth O-shaped ring, the fourth O-shaped ring enables sliding sealing between the hydraulic brake piston 13 and the brake cylinder 12 to be kept, the inner ring surface of the hydraulic brake piston 13 is embedded with a fifth O-shaped ring, and the fifth O-shaped ring enables sliding sealing between the hydraulic brake piston 13 and the brake to be kept. While the hydraulic brake piston 13 forms a closed chamber within the brake cylinder 12 via the fourth O-ring and the fifth O-ring.
Hydraulic oil is injected from a first oil nozzle 15 on the driven support shell 4, enters a closed cavity formed by the brake cylinder 12 and the hydraulic brake piston 13 through a first oil way in the interior, a second oil way in the brake cylinder 12 and a third oil way on the hydraulic brake piston 13, so as to push the hydraulic brake piston 13 to move towards the hydraulic brake rotor 10 in the brake cylinder 12 until pushing the hydraulic brake rotor 10 to firmly press on the hydraulic brake stator 11, and the hydraulic brake rotor 10, the tailstock transition sleeve 7, the inner ring of the first cross roller bearing 5 and the tailstock rotating shaft 6 are stopped by friction between the hydraulic brake rotor 10 and the hydraulic brake stator 11, so that a braking effect is achieved.
One end of the cradle housing 3 is horizontally fastened to the output disc of the horizontally rotating driving member 2 by a sixth screw. The other end of the cradle shell 3 is horizontally fastened on the free end of the tailstock rotating shaft 6 through a seventh screw. The cradle housing 3 is used for mounting the tilting member. A sixth O-shaped ring is arranged between one end of the cradle shell 3 and the output disc of the horizontal rotation driving piece 2, and the sixth O-shaped ring enables static sealing to be kept between the cradle shell 3 and the output disc of the horizontal rotation driving piece 2. A seventh O-shaped ring is arranged between the other end of the cradle shell 3 and the tailstock rotating shaft 6, and the seventh O-shaped ring enables static seal to be kept between the cradle shell 3 and the tailstock rotating shaft 6. A power driving cavity and a speed reduction output cavity are arranged in the cradle shell 3, and the power driving cavity and the speed reduction output cavity are used for installing the inclined rotating piece. When the horizontal rotation driving piece 2 rotates, the cradle shell 3 is driven to circumferentially rotate along the axis of the horizontal rotation driving piece 2 through the cooperation of the horizontal rotation driven piece, so that a fourth shaft is provided for a workpiece to be machined, which is mounted on the inclined rotating piece.
The tilting rotation piece comprises a power driving piece and a speed reduction output piece, wherein the power driving piece is arranged in the power driving cavity, and the speed reduction output piece is arranged in the speed reduction output cavity. The power driving piece is an ultra-flat torque motor. The power driving part comprises a motor shell 16, a motor stator 17, a motor rear end cover 18, a rotor 19, a motor rotating shaft 20 and a high-precision encoder 21, wherein the motor shell 16 is fastened in the power driving cavity through an eighth screw, the motor stator 17 is pressed in the motor shell 16, and the motor rear end cover 18 is fastened on the motor shell 16 through the ninth screw. The rotor 19 is mounted on the motor rotating shaft 20, a first bearing 33 is sleeved at one end of the motor rotating shaft 20, a second bearing 34 is sleeved at the other end of the motor rotating shaft 20, the motor rotating shaft 20 is positioned on the motor rear end cover 18 in an embedded manner through the first bearing 33, the motor rotating shaft 20 is positioned on the motor shell 16 in an embedded manner through the second bearing 34, the axis of the motor rotating shaft 20 coincides with the axis of the motor stator 17, and the motor rotating shaft 20 is positioned in the motor stator 17 through the first bearing 33 and the second bearing 34. A first synchronous pulley 22 is fixedly sleeved on the other end of the motor rotating shaft 20. Specifically, the first synchronous pulley 22 is fastened to the motor shaft 20 radially through a jackscrew, and the motor shaft 20 is sleeved with a first clamp spring 49, and the first clamp spring 49 can limit the first synchronous pulley 22 to move on the motor shaft 20 along the axial direction. The high-precision encoder 21 is mounted on the motor rear end cover 18, and the high-precision encoder 21 monitors the rotation speed of the motor rotating shaft 20 in real time. The power line and the signal line on the power driving piece pass through the line pipe reserved in the cradle shell 3 and the output shaft of the horizontal rotation driving piece 2 in sequence and then are electrically connected with the wiring terminal 23 on the horizontal rotation driving piece 2. That is, the power driving member communicates with external power lines and signal lines through the connection terminals 23 by the power lines and the signal lines.
The speed reduction output piece comprises a third harmonic speed reducer, a harmonic input shaft 24, a harmonic end cover 25, a speed reduction output shaft 26, an output chuck 27, a protection tube 28 and an inclined rotation braking piece, wherein the third harmonic speed reducer and the inclined rotation braking piece are both arranged in the speed reduction output cavity. The third harmonic speed reducer comprises a steel wheel 29, a flexible wheel 30 and a wave generator 31, wherein the steel wheel 29 is fastened on the inner ring of a second crossed roller bearing 32 through a tenth screw, the outer ring of the second crossed roller bearing 32 is fastened in the speed reduction output cavity through an eleven screw, the flexible wheel 30 is embedded in the steel wheel 29, the wave generator 31 is embedded in the flexible wheel 30, and one end of the harmonic input shaft 24 is embedded in the wave generator 31 in a penetrating way. The harmonic end cover 25 is fastened on the outer ring of the second crossed roller bearing 32 through twelve screws, and a third bearing 35 is embedded in the inner ring of the harmonic end cover 25, and the third bearing 35 can improve radial stability of one end of the harmonic input shaft 24. The speed reduction output shaft 26 is hollow, the speed reduction output shaft 26 is fastened on the free end surface of the steel wheel 29 through a twelfth screw, a fourth bearing 36 is embedded in the speed reduction output shaft 26, and the fourth bearing 36 can improve the radial stability of the other end of the harmonic input shaft 24; the speed reduction output shaft 26 is sleeved with a deep groove ball bearing 37, and the speed reduction output shaft 26 is stabilized in the speed reduction output cavity through the deep groove ball bearing 37 so as to improve the radial stability and the output rigidity of the speed reduction output shaft 26. The output chuck 27 is fastened to the free end of the reduction output shaft 26 by a thirteenth screw. The outer diameter of the protection tube 28 is smaller than the inner diameter of the harmonic input shaft 24, one end of the protection tube 28 is fastened on the speed reduction output shaft 26 through a fourteenth screw, the protection tube 28 is embedded in the harmonic input shaft 24, meanwhile, an eighth O-shaped ring is arranged between the protection tube 28 and the speed reduction output shaft 26, and the eighth O-shaped ring improves static seal between the protection tube 28 and the speed reduction output shaft 26. The protective tube 28 serves to protect the cable and the pipe from passing through. The bottom plate 38 is fastened to the power driving cavity and the speed reduction output cavity through fifteenth screws, and the bottom plate 38 can improve static sealing performance of the power driving cavity and the speed reduction output cavity. The bottom plate 38 is provided with a third oil seal at a position penetrated by one end of the protection tube 28, and the third oil seal can improve dynamic sealing between the protection tube 28 and the bottom plate 38.
The second synchronous pulley 40 is disposed at one end of the harmonic input shaft 24, and the second clamp spring 50 is disposed at one end of the harmonic input shaft 24, where the second clamp spring 50 can prevent the second synchronous pulley 40 from moving on the harmonic input shaft 24 along the axial direction. The second pulley 40 and the first pulley 22 are connected by a highly rigid timing belt 41. So that the power driving part can drive the harmonic rotation shaft to rotate through the high-rigidity synchronous belt 41 and the second synchronous pulley 40. The base plate 38 on the side of the high-rigidity synchronous belt 41 is provided with a belt wheel tensioning piece, the belt wheel tensioning piece comprises a belt wheel support 42, an auxiliary support 43, an idler wheel 44, a third clamp spring 45 and a mandrel 46, the belt wheel support 42 is fastened in a sliding groove of the base plate 38 through a sixteenth screw, the auxiliary support 43 is arranged on the belt wheel support 42, two ends of the mandrel 46 are respectively arranged on the belt wheel support 42 and the auxiliary support 43, the idler wheel 44 and the third clamp spring 45 are sleeved on the mandrel 46, and the third clamp spring 45 can prevent the idler wheel 44 from moving along the axial direction on the mandrel 46. The sixteenth screw installed on the bottom plate 38 is adjusted to drive the pulley bracket 42 to slide along the chute to be close to the high-rigidity synchronous belt 41, and after the high-strength synchronous belt is adjusted to a required tensioning degree, the sixteenth screw is fixed.
The inclined rotating brake member has the same structure as the horizontal circumferential brake member, the same installation mode and the same operation principle, and is not described in detail herein. Hydraulic oil required for the tilting rotation brake is injected from a hydraulic rotary joint 47 provided on the driven support case 4, and enters the tilting rotation brake through a fourth oil passage in the cradle housing 3 to provide braking force. Specifically, the rear end heel-turn portion of the hydraulic rotary joint 47 is connected with the other end of the cradle casing 3 through a seventeenth screw, the front end static portion of the hydraulic rotary joint 47 is mounted on the driven support casing 4 through a joint mounting frame 48, the joint mounting frame 48 plays a radial supporting role, and the joint mounting frame 48 is abutted against a notch of the rear end static portion of the hydraulic rotary joint 47 through an eighteenth screw to prevent radial heel-turn of the hydraulic rotary joint, so that when the rear end heel-turn portion of the hydraulic rotary joint 47 rotates along with the rotation, hydraulic pipelines connected to the front end static portion of the hydraulic rotary joint 47 are not wound together along with the heel-turn.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (10)
1. A cradle type third harmonic five-axis turntable, comprising:
the horizontal rotating piece comprises a horizontal rotating driving piece, a horizontal rotating driven piece and a cradle shell, wherein the horizontal rotating driving piece and the horizontal rotating driven piece are both installed on an installation seat, and the cradle shell is arranged on the horizontal rotating driving piece and the horizontal rotating driven piece and is driven by the horizontal rotating driving piece to circumferentially rotate along a horizontal axis;
the tilting rotating piece is arranged on the cradle shell and comprises a power driving piece and a speed reduction output piece, wherein the power driving piece is arranged in a power driving cavity of the cradle shell, and the speed reduction output piece is arranged in a speed reduction output cavity of the cradle shell; the power driving part inputs power to the speed reduction output part, and drives the clamped workpiece to be processed to rotate circumferentially after the power is subjected to speed reduction output through the speed reduction output part.
2. The cradle style third harmonic five-axis turntable of claim 1, wherein the horizontal rotation follower comprises an auxiliary support disposed on the mount and a horizontal circumferential brake disposed on the auxiliary support; the auxiliary supporting piece is used for supporting the cradle shell to rotate in an auxiliary mode, and the horizontal circumferential braking piece brakes the cradle shell according to positioning requirements.
3. The cradle style triple harmonic five-axis turntable of claim 2, wherein the auxiliary support comprises a driven support shell, a first crossed roller bearing, a tailstock rotating shaft and a tailstock transition sleeve, the driven support shell is arranged on the mounting seat, an outer ring of the first crossed roller bearing is fixedly embedded in an inner cavity of the driven driving shell, the tailstock rotating shaft is fastened on one end face of an inner ring of the first crossed roller bearing, the tailstock transition sleeve is fastened on the other end face of the inner ring of the first crossed roller bearing, and one end of the inner cavity of the driven support shell is sealed by the tailstock rotating shaft through a first sealing piece.
4. A cradle style third harmonic five-axis turntable according to claim 2 or 3, wherein the horizontal circumferential brake member comprises a hydraulic brake rotor, a hydraulic brake stator disc, a brake cylinder and a hydraulic brake piston, wherein the hydraulic brake rotor is fixedly sleeved outside the tailstock transition sleeve, the hydraulic brake stator disc and the brake cylinder are simultaneously fastened on a straight port at the other end of the inner cavity of the driven support shell, the hydraulic brake stator disc is positioned on one side of the hydraulic brake rotor, and a gap with a preset width is formed between the hydraulic brake stator disc and the hydraulic brake rotor disc; the brake cylinder seals the other end of the inner cavity of the driven support shell through a second sealing piece.
5. The cradle style triple harmonic five axis turntable of claim 4 wherein the hydraulic brake piston is embedded in the brake cylinder cavity and the hydraulic brake piston is on the other side of the hydraulic brake rotor while the hydraulic brake piston forms a closed chamber within the brake cylinder such that the hydraulic brake piston is reciprocally slid in the brake cylinder in an axial direction as the pressure within the closed chamber changes.
6. The cradle style third harmonic five axis turntable of claim 3, wherein one end of the cradle housing is horizontally secured to the output disc of the horizontally rotatable driving member and the other end of the cradle housing is horizontally secured to the free end of the tailstock shaft.
7. A cradle type third harmonic five-axis turntable according to any one of claims 1 to 3, wherein the power driving member comprises a motor housing, a motor stator, a motor rear end cover, a rotor, a motor rotating shaft and a high precision encoder, the motor housing is fastened in the power driving cavity, the motor stator is press-fitted in the motor housing, the motor rear end cover is fastened on the motor housing, the rotor is mounted on the motor rotating shaft, the motor rotating shaft is embedded and positioned on the motor rear end cover through a first bearing which is sleeved, the motor rotating shaft is embedded and positioned on the motor housing through a second bearing which is sleeved, and a first synchronous pulley is fixedly sleeved on the other end of the motor rotating shaft; and a power line and a signal line on the power driving piece sequentially pass through a circuit tube reserved in the cradle shell and the output shaft of the horizontal rotation driving piece and are electrically connected with a wiring terminal on the horizontal rotation driving piece.
8. The cradle style third harmonic five-axis turntable of claim 3, wherein the deceleration output comprises a third harmonic reducer, a harmonic input shaft, a harmonic end cap, a deceleration output shaft, an output chuck, a protective tube, and a tilting rotation brake, both disposed within the deceleration output cavity; the third harmonic speed reducer comprises a steel wheel, a flexible wheel and a wave generator, wherein the steel wheel is fastened on the inner ring of a second crossed roller bearing, the outer ring of the second crossed roller bearing is fastened in the speed reduction output cavity, the flexible wheel is embedded in the steel wheel, and the wave generator is embedded in the flexible wheel; the harmonic wave input shaft one end is arranged on the wave generator, the harmonic wave end cover is fastened on the outer ring of the second crossed roller bearing, the speed reduction output shaft is fastened on the free end surface of the steel wheel, the output chuck is fastened on the free end of the speed reduction output shaft, one end of the protection tube is fastened on the speed reduction output shaft, the protection tube is embedded in the harmonic wave input shaft, the power driving cavity and the port of the speed reduction output cavity are fastened with a bottom plate, and the bottom plate is penetrated by one end of the protection tube.
9. The cradle style third harmonic five-axis turntable according to claim 7, wherein a second synchronous pulley is arranged at one end of the harmonic input shaft, and the second synchronous pulley and the first synchronous pulley are connected through a synchronous belt; the base plate on hold-in range limit is provided with band pulley tensioning piece, band pulley tensioning piece includes band pulley support, auxiliary stand, idler, third jump ring and dabber, the band pulley support fastening is in the spout of base plate, the auxiliary stand sets up on the band pulley support, the dabber both ends set up respectively the band pulley support with on the auxiliary stand, idler and third jump ring all suit are in on the dabber.
10. The cradle style third harmonic five-axis turntable of claim 8, wherein the tilt rotation brake is identical in structure, installation and principle to the horizontal circumferential brake; hydraulic oil required by the tilting rotation braking part is injected from a hydraulic rotation joint arranged on the driven supporting shell and enters the tilting rotation braking part through an oil way in the cradle shell.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210039780.5A CN116475775A (en) | 2022-01-14 | 2022-01-14 | Cradle type third harmonic five-axis turntable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210039780.5A CN116475775A (en) | 2022-01-14 | 2022-01-14 | Cradle type third harmonic five-axis turntable |
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| CN116475775A true CN116475775A (en) | 2023-07-25 |
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| CN202210039780.5A Pending CN116475775A (en) | 2022-01-14 | 2022-01-14 | Cradle type third harmonic five-axis turntable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116753279A (en) * | 2023-08-18 | 2023-09-15 | 江苏万基传动科技有限公司 | High-precision light speed reducer |
| CN117840780A (en) * | 2024-03-08 | 2024-04-09 | 福建省鈊美机械科技有限公司 | Turntable type machining center and workpiece machining method |
-
2022
- 2022-01-14 CN CN202210039780.5A patent/CN116475775A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116753279A (en) * | 2023-08-18 | 2023-09-15 | 江苏万基传动科技有限公司 | High-precision light speed reducer |
| CN116753279B (en) * | 2023-08-18 | 2023-11-03 | 江苏万基传动科技有限公司 | High-precision light speed reducer |
| CN117840780A (en) * | 2024-03-08 | 2024-04-09 | 福建省鈊美机械科技有限公司 | Turntable type machining center and workpiece machining method |
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