CN108857471B - Five-axis platform of oil pressure cantilever and design method thereof - Google Patents
Five-axis platform of oil pressure cantilever and design method thereof Download PDFInfo
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- CN108857471B CN108857471B CN201810828901.8A CN201810828901A CN108857471B CN 108857471 B CN108857471 B CN 108857471B CN 201810828901 A CN201810828901 A CN 201810828901A CN 108857471 B CN108857471 B CN 108857471B
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000013461 design Methods 0.000 title claims abstract description 11
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 61
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000005489 elastic deformation Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims 3
- 238000003754 machining Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 79
- 238000010586 diagram Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
- B23Q1/28—Means for securing sliding members in any desired position
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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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Abstract
The invention provides an oil pressure cantilever five-axis platform and a design method thereof, and relates to the technical field of machine tool machining and positioning. The oil pressure cantilever five-axis platform comprises: four-axis mechanism and five cantilevers, five cantilevers include the casing, are provided with servo motor and harmonic reducer in the casing, and the output shaft and the quick positioning platform of harmonic reducer are connected, and quick positioning platform includes the band-type brake subassembly and installs in the band-type brake subassembly and keep away from the quick positioning assembly of harmonic reducer one side, and the band-type brake subassembly includes: band-type brake sleeve, band-type brake ring and oil piping system, band-type brake sleeve cover are located the band-type brake ring outside, and band-type brake sleeve is connected with oil piping system, and the band-type brake ring includes elastic deformation portion, forms the closed space between the thin wall deformation portion of band-type brake sleeve and band-type brake ring, and closed space and oil piping system intercommunication, band-type brake ring cover are located on the output shaft of harmonic reducer. The power transmission structure of this scheme is compact, holds tightly the location stably, and structural durability is stronger.
Description
Technical Field
The invention relates to the technical field of machine tool machining and positioning, in particular to an oil pressure cantilever five-axis platform and a design method thereof.
Background
At present, the existing fixture positioning platform for machine tool machining has the technical problems of complex structure, complex motion transmission and unstable positioning.
Disclosure of Invention
The invention aims to provide an oil pressure cantilever five-axis platform, which aims to solve the technical problem of unstable positioning in the prior art.
The invention provides an oil pressure cantilever five-axis platform, which comprises: the four-axis mechanism is arranged on a five-axis cantilever on the four-axis mechanism in a swinging way,
The five-axis cantilever comprises a shell, a servo motor and a harmonic speed reducer are arranged in the shell, the servo motor is in transmission connection with the harmonic speed reducer, an output shaft of the harmonic speed reducer is connected with a quick positioning platform, the quick positioning platform comprises a band-type brake component and a quick positioning component arranged on one side of the band-type brake component far away from the harmonic speed reducer,
The band-type brake assembly includes: band-type brake sleeve, band-type brake ring and oil piping system, band-type brake sleeve cover is located the band-type brake ring outside, the band-type brake sleeve with oil piping system connects, the band-type brake ring includes elastic deformation portion, the band-type brake sleeve with form the closed space between the thin wall deformation portion of band-type brake ring, the closed space with oil piping system communicates, the band-type brake ring cover is located on the output shaft of harmonic reducer.
In the above technical scheme, further, the device further comprises a hollow wire passing pipe, wherein the hollow wire passing pipe penetrates through the harmonic speed reducer and the middle area of the rapid positioning platform, and an air pipe is arranged in the hollow wire passing pipe.
In any of the above technical solutions, further, the quick positioning assembly includes a positioning disc, a quick positioning ring and a zero positioning piece, the hollow wire passing tube is connected with the positioning disc, the positioning disc is fixedly sleeved on an output shaft of the harmonic speed reducer, the band-type brake ring is sleeved on the positioning disc, the quick positioning ring is mounted on one side of the positioning disc deviating from the harmonic speed reducer, and the zero positioning piece is mounted on one side of the quick positioning ring deviating from the harmonic speed reducer.
In any of the above technical solutions, further, the housing includes a housing body, a first cover body and a second cover body, the first cover body and the second cover body are respectively covered on two opposite sides of the housing body, a containing cavity is formed between the housing body, the first cover body and the second cover body, the servo motor, the harmonic reducer and the quick positioning platform are all installed in the containing cavity, and a partial area of the quick positioning platform extends out of the first cover body.
In any of the above technical solutions, further, a mounting hole for sleeving the band-type brake ring is provided on the band-type brake sleeve, and an oil path interface is provided on an outer side wall of the band-type brake sleeve, and the oil path system is connected with the oil path interface.
In any one of the above technical solutions, further, a convex ring and a brake ring are arranged on the band-type brake ring, the convex ring is located at one end of the band-type brake ring, the other end of the band-type brake ring is located in the mounting hole, and the convex ring abuts against the hole edge of the mounting hole; the brake ring is arranged in the middle of the band-type brake ring, the band-type brake ring is inwards sunken to form an annular groove, the groove bottom of the annular groove is the thin-wall deformation part, the annular groove and the thin-wall deformation part form the brake ring, and the annular groove and the wall of the mounting hole form the closed space.
In any of the above technical solutions, further, annular grooves are formed in two sides of the annular groove, and sealing rings are arranged in the annular grooves.
In any of the above technical solutions, further, an annular slot corresponding to the sealing ring is provided on a hole wall of the mounting hole.
In any of the above technical solutions, further, the oil path system includes a brake oil pipe, a pressure regulator, and a joint; the brake oil pipe is connected with the oil path interface through the connector, and the pressure regulator is arranged on the brake oil pipe and used for regulating the oil pressure in the brake oil pipe.
Compared with the prior art, the oil pressure cantilever five-axis platform has the following advantages:
In the working process of the oil pressure cantilever five-axis platform, a workpiece to be processed is fixed on the quick positioning assembly through the clamp, the servo motor drives the harmonic speed reducer to rotate, and the harmonic speed reducer drives the quick positioning assembly to rotate, so that the angle of the clamp is adjusted. After angle adjustment finishes, let in high pressure oil through oil piping to the closed space between band-type brake sleeve and the band-type brake ring for produce great oil pressure in the closed space, the oil pressure makes thin wall deformation portion take place deformation, in order to make thin wall deformation portion take place deformation to the direction that is close to harmonic reducer's output shaft, thereby make band-type brake hug closely harmonic reducer's output shaft, prevent harmonic reducer's output shaft rotation, thereby reach quick location's effect.
The hydraulic cantilever five-axis platform provided by the invention enables the band-type brake to hug the output shaft of the harmonic speed reducer through the oil pressure, so that the deviation of the angle of a quick positioning component arranged on the output shaft of the harmonic speed reducer is avoided.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
The invention further aims to provide a design method of the oil pressure cantilever five-axis platform, which aims to solve the technical problem of unstable positioning in the prior art.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the design method of the oil pressure cantilever five-axis platform comprises a band-type brake ring, and the design method of the band-type brake ring comprises the following steps:
Step a, determining the maximum torque required by a band-type brake ring;
T=9550P/n，P=F×V，V=πR×n/30；
p is power, the unit is kW, n is rotating speed, the unit is r/min; the torque unit is Nm, the torque W, the torque F, the action radius R, F=W/R, the linear speed V, and the unit is R/min;
Step b, designing the inner diameter R1 of the band-type brake ring;
r1=r+l, l=0.005 mm-0.01mm, R is the outer diameter of the positioning disc locked by the band-type brake ring;
step c, designing the thickness h of the thin-wall deformation part of the brake ring of the band-type brake ring;
h=h/10, H being the maximum thickness of the gate ring;
step d, designing the width of the thin-wall deformation part of the brake ring of the band-type brake ring as b;
b=b/2; b is the maximum width of the band-type brake ring;
And e, checking the maximum torque of the locking state of the band-type brake.
The oil pressure cantilever five-axis platform designed and manufactured by the design method of the oil pressure cantilever five-axis platform has the same advantages as the oil pressure cantilever five-axis platform compared with the prior art, and the description is omitted here.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a five-axis cantilever in a five-axis hydraulic cantilever platform according to an embodiment of the present invention;
FIG. 2 is an exploded view of a five-axis hydraulic cantilever platform according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of an oil pressure cantilever five-axis platform provided by an embodiment of the invention;
Fig. 4 is a schematic structural diagram of a rapid positioning platform in a five-axis hydraulic cantilever platform according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a band-type brake assembly in a five-axis platform of an oil pressure cantilever provided by an embodiment of the invention;
FIG. 6 is a schematic diagram of a band-type brake ring in a five-axis platform of an oil pressure cantilever according to an embodiment of the present invention;
FIG. 7 is a second schematic structural diagram of a band-type brake ring in a five-axis hydraulic cantilever platform according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of connection between a brake sleeve and an oil circuit system in an oil pressure cantilever five-axis platform according to an embodiment of the present invention;
Fig. 9 is an assembly schematic diagram of an oil pressure cantilever five-axis platform and a clamp according to an embodiment of the present invention.
In the figure:
1-a four-axis mechanism;
2-five-axis cantilever; 21-a housing; 211-a first cover; 212-a second cover; 213-a housing body; 22-a servo motor; 23-harmonic speed reducer; 24-hollow wire passing tube;
3-band-type brake assembly; 31-a band-type brake sleeve; 311-an oil way interface; 32-band-type brake ring; 321-thin wall deformation part; 322-convex ring; 323-gate ring; 324-an annular groove; 325-sealing ring; 33-closing the space;
4-clamping;
5-a quick positioning assembly; 51-positioning plate; 52-a quick positioning ring; 53-zero-point positioning piece;
61-brake oil pipe; 62-locking nut; 63-linker; 64-pressure regulator;
71-pulleys; 72-synchronous belt.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 1 to 9, the oil pressure cantilever five-axis platform provided by the embodiment of the invention includes: a four-axis mechanism 1, and a five-axis cantilever 2 arranged on the four-axis mechanism 1 in a swinging way, wherein:
Five cantilever 2 include casing 21, are provided with servo motor 22 and harmonic reducer 23 in the casing 21, and servo motor 22 and harmonic reducer 23 transmission are connected, and the output shaft and the quick positioning platform of harmonic reducer 23 are connected, and quick positioning platform includes band-type brake subassembly 3 and installs in band-type brake subassembly 3 the quick positioning assembly 5 of harmonic reducer 23 one side of keeping away from, wherein:
Band-type brake subassembly 3 includes: band-type brake sleeve 31, band-type brake ring 32 and oil piping, band-type brake sleeve 31 cover are located band-type brake ring 32 outside, band-type brake sleeve 31 is connected with oil piping, band-type brake ring 32 includes elastic deformation portion, forms closed space 33 between band-type brake sleeve 31 and the thin wall deformation portion 321 of band-type brake ring 32, and closed space 33 communicates with oil piping, and band-type brake ring 32 cover is located on the output shaft of harmonic reducer 23.
In the working process of the oil pressure cantilever five-axis platform provided by the embodiment of the invention, a workpiece to be processed is fixed on the quick positioning assembly 5 through the clamp 4, the servo motor 22 drives the harmonic reducer 23 to rotate, and the harmonic reducer 23 drives the quick positioning assembly 5 to rotate, so that the angle of the clamp 4 is adjusted. After the angle adjustment is finished, high-pressure oil is introduced into the closed space 33 between the band-type brake sleeve 31 and the band-type brake ring 32 through the oil way system, so that large oil pressure is generated in the closed space 33, the thin-wall deformation portion 321 is deformed by the oil pressure, the thin-wall deformation portion 321 deforms in the direction close to the output shaft of the harmonic speed reducer 23, the band-type brake ring 32 is tightly held by the output shaft of the harmonic speed reducer 23, the output shaft of the harmonic speed reducer 23 is prevented from rotating, and the effect of quick positioning is achieved.
Because the oil pressure cantilever five-axis platform provided by the embodiment of the invention enables the band-type brake ring 32 to hold the output shaft of the harmonic speed reducer 23 through oil pressure, the deviation of the angle of the quick positioning assembly 5 arranged on the output shaft of the harmonic speed reducer 23 is avoided.
In the above technical scheme, further, the five-axis hydraulic cantilever platform further comprises a hollow wire passing pipe 24, the hollow wire passing pipe 24 is arranged in the middle area of the harmonic reducer 23 and the rapid positioning platform in a penetrating manner, and an air pipe is arranged in the hollow wire passing pipe 24. When the clamp 4 connected to the five-axis platform of the oil pressure cantilever is driven by air pressure, the air pipe is connected with a driving mechanism of the clamp 4; when the jig 4 is vacuum-sucked to fix the workpiece to be processed, the air pipe may be communicated with the vacuum suction port of the jig 4 to perform a vacuum-pumping operation.
As shown in fig. 2 and 3, the servomotor 22 is parallel to the shaft end of the harmonic reducer 23, and the shortest distance between the servomotor 22 and the four-axis mechanism 1 is smaller than the shortest distance between the harmonic reducer 23 and the four-axis mechanism 1, and the output torque of the servomotor 22 is transmitted to the input shaft of the harmonic reducer 23 through the pulley 71 assembly. Specifically, the belt pulley 71 assembly includes belt pulley 71, hold-in range 72 and adjustment mechanism, and servo motor 22's output shaft links to each other with one belt pulley 71, and the input shaft of harmonic speed reducer 23 links to each other with another belt pulley 71, passes through hold-in range 72 transmission connection between two belt pulleys 71, and adjustment mechanism installs on hold-in range 72 for adjust the length of hold-in range 72, in order to make things convenient for the dismouting belt pulley 71 assembly.
After the servo motor 22 is electrified, torque is transmitted to a wave generator at the input end of the harmonic speed reducer 23 through the belt pulley 71 assembly, a flexible gear of the wave generator rotates to output, the torque is transmitted to an output shaft of the harmonic speed reducer 23 after speed reduction, and the torque is transmitted to the quick positioning assembly 5 through the output shaft of the harmonic speed reducer 23, so that the quick positioning assembly 5 drives a workpiece to be processed to rotate to a required position.
As a preferred embodiment of the present invention, the quick positioning assembly 5 includes a positioning disc 51, a quick positioning ring 52 and a zero positioning piece 53, the hollow wire pipe 24 is connected with the positioning disc 51, the positioning disc 51 is fixedly sleeved on the output shaft of the harmonic reducer 23, the band-type brake ring 32 is sleeved on the positioning disc 51, that is, the band-type brake ring 32 is sleeved on the harmonic reducer 23 through the positioning disc 51, and after the band-type brake ring 32 hugs the positioning disc 51, the positioning disc 51 is connected with the output shaft of the harmonic reducer 23, so that the output shaft of the harmonic reducer 23 stops rotating. The quick positioning ring 52 is arranged on one side of the positioning disk 51, which is away from the harmonic reducer 23, and the zero point positioning piece 53 is arranged on one side of the quick positioning ring 52, which is away from the harmonic reducer 23.
In an alternative embodiment, the zero point positioning member 53 is slidably connected to the quick positioning ring 52, specifically, the zero point positioning member 53 is connected to the quick positioning ring 52 through a plurality of locking screws, so that the zero point positioning member 53 can be fixed in an adjustable displacement within the positioning ring. The center alignment of the zero point positioning piece 53 is realized by adjusting and locking the locking screw, so that the adjustment and calibration are realized. The zero point positioning piece 53 is provided with a protruding portion at the top for snap-fit connection with the clamp 4.
In order to install other structures inside the casing 21, the casing 21 includes a casing body 213, a first cover 211 and a second cover 212, the first cover 211 and the second cover 212 are respectively covered on two opposite sides of the casing body 213, a containing cavity is formed among the casing body 213, the first cover 211 and the second cover 212, the servo motor 22, the harmonic reducer 23 and the rapid positioning platform are all installed in the containing cavity, and a partial area of the rapid positioning platform extends out of the first cover 211. Specifically, the zero point positioning piece 53 in the quick positioning platform is located above the upper cover.
In any of the above technical solutions, further, a mounting hole for sleeving the band-type brake ring 32 is provided on the band-type brake sleeve 31, and an oil path interface 311 is provided on an outer sidewall of the band-type brake sleeve 31, and the oil path system is connected with the oil path interface 311.
The band-type brake ring 32 is provided with a convex ring 322 and a brake ring 323, the convex ring 322 is positioned at one end part of the band-type brake ring 32, the other end part of the band-type brake ring 32 is positioned in the mounting hole, and the convex ring 322 is abutted against the hole edge of the mounting hole; the brake ring 323 is arranged in the middle of the band-type brake ring 32, an annular groove is formed by inwards recessing the band-type brake ring 32, the groove bottom of the annular groove is a thin-wall deformation part 321, the annular groove and the thin-wall deformation part 321 form the brake ring 323, the annular groove and the wall of the mounting hole form a closed space 33, and the closed space 33 is communicated with the oil path interface 311. When the oil circuit system conveys high-pressure oil into the oil circuit interface 311, the high-pressure oil passes through the closed space 33 which is introduced by the oil circuit system, oil pressure is generated in the closed space 33 to enable the thin-wall deformation portion 321 to deform inwards, the band-type brake ring 32 is enabled to shrink inwards under the action of high pressure, so that the band-type brake ring 32 is enabled to tightly hold the positioning disc 51, and further rapid positioning is achieved.
On the basis of the embodiment, annular grooves 324 are formed on two sides of the annular groove, and sealing rings 325 are arranged in the annular grooves 324.
Optionally, an annular slot corresponding to the seal ring 325 is provided on the wall of the mounting hole.
In this embodiment, the present invention is not limited to this embodiment. By the arrangement of the annular groove 324, the sealing ring 325 and the annular groove, the tightness of the two sides of the closed space 33 is increased, and in addition, the sealing ring 325 can be a rubber sealing ring 325.
In an alternative implementation of the above embodiment, the oil circuit system includes a brake oil pipe 61, a pressure regulator 64, and a joint 63; the brake oil pipe 61 is connected to the oil passage port 311 via a joint 63, and a pressure regulator 64 is provided in the brake oil pipe 61 for regulating the oil pressure in the brake oil pipe 61.
Optionally, a lock nut 62 is attached to the joint 63.
In this embodiment, high-pressure oil enters the closed space 33 through the brake oil pipe 61, and the oil pressure therein can be monitored and adjusted by pressure adjustment.
In addition to any of the above embodiments, the thickness of the thin-walled deformed portion 321 is 0.3mm to 0.8mm, and the width of the thin-walled deformed portion 321 is 5mm to 15mm, depending on the case.
Note that, the band-type brake ring 32 is integrally formed of a deformable metal material.
In addition to the above embodiments, the collar 322 is screwed to the band brake sleeve 31.
In this embodiment, the convex ring 322 is screwed with the band-type brake sleeve 31 again, so that the screwing operation is convenient and simple, and the connection strength between the convex ring and the band-type brake sleeve is increased.
Example two
The second embodiment of the present invention provides a design solution applied to the oil pressure cantilever five-axis platform provided in the first embodiment, specifically, in the oil pressure cantilever five-axis platform, a design method of a band-type brake ring 32 includes:
Step a, determining the maximum torque required by the band-type brake ring 32;
T=9550P/n，P=F×V，V=πR×n/30；
p is power, the unit is kW, n is rotating speed, the unit is r/min; the torque unit is Nm, the torque W, the torque F, the action radius R, F=W/R, the linear speed V, and the unit is R/min;
step b, designing the inner diameter R1 of the band-type brake ring 32;
R1=r+l, l=0.005 mm-0.01mm, R being the outer diameter of the positioning disc 51 locked by the band-type brake ring 32;
Step c, designing the thickness h of the thin-wall deformation part 321 of the brake ring 323 of the band-type brake ring 32;
h=h/10, H being the maximum thickness of the gate ring 323;
Step d, designing the width of the thin-wall deformation part 321 of the brake ring 323 of the band-type brake ring 32 as b;
b=b/2; b is the maximum width of the band-type brake ring 32;
And e, checking the maximum torque of the locking state of the band-type brake ring 32.
1. Checking the appearance and the structure of the band-type brake ring 32 assembly, and recording the serial number of the band-type brake ring 32;
2. The surface is cleaned, 2O-shaped rings are arranged, 2 screws are locked into 2 oil ports of the band-type brake sleeve 31, lubricating oil is coated, and a band-type brake ring 32 is arranged; the screw is coated with sealing glue, and the sleeve and the band-type brake ring 32 are locked;
3. Evacuating and performing oil pressure test to ensure that the band-type brake assembly 3 does not leak oil;
4. Mounting band-type brake ring 32 on positioning disk 51;
5. Locking the torque test block on the positioning disk 51 and locking the screw;
6. Firstly idling for a few circles, and testing the maximum torque required by the rotation of the positioning disc 51 when the pressure oil is not loaded;
7. Another lock head of the oil pipe is locked on the booster joint 63, the air pressure is adjusted to be 0.4Mpa, and the oil pressure is adjusted to be 4.5Mpa; loading pressure oil to test the maximum torque required to rotate the positioning disk 51 in the forward direction; loading pressure oil to test the maximum torque required to rotate the puck 51 in reverse;
8. The band-type brake ring 32 is replaced and steps 1-7 are repeated.
The test results are shown in the following table:
The maximum torque required by band-type brake ring 32 is calculated to be 50Nm, and the results of the test table show that the locking torque provided by band-type brake ring 32 is far greater than 50Nm no matter in forward rotation or reverse rotation after pressurization.
The inner diameter r1=150mm+ (0.005 mm to 0.01 mm) of the gate ring 323 is designed and determined, the thickness of the thin-wall deformed portion 32121 is 0.3mm to 0.8mm, and the width of the thin-wall deformed portion 321 is 5mm to 15mm.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention. Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims below, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (5)
1. An oil pressure cantilever five-axis platform, which is characterized by comprising: the four-axis mechanism is arranged on a five-axis cantilever on the four-axis mechanism in a swinging way,
The five-axis cantilever comprises a shell, a servo motor and a harmonic speed reducer are arranged in the shell, the servo motor is in transmission connection with the harmonic speed reducer, an output shaft of the harmonic speed reducer is connected with a quick positioning platform, the quick positioning platform comprises a band-type brake component and a quick positioning component arranged on one side of the band-type brake component far away from the harmonic speed reducer,
The band-type brake assembly includes: the band-type brake comprises a band-type brake sleeve, a band-type brake ring and an oil way system, wherein the band-type brake sleeve is sleeved on the outer side of the band-type brake ring, the band-type brake sleeve is connected with the oil way system, the band-type brake ring comprises an elastic deformation part, a closed space is formed between the band-type brake sleeve and the thin-wall deformation part of the band-type brake ring, the closed space is communicated with the oil way system, and the band-type brake ring is sleeved on an output shaft of the harmonic reducer;
The band-type brake sleeve is provided with a mounting hole for sleeving the band-type brake ring, the outer side wall of the band-type brake sleeve is provided with an oil way interface, and the oil way system is connected with the oil way interface;
the brake ring is provided with a convex ring and a brake ring, the convex ring is positioned at one end part of the brake ring, the other end part of the brake ring is positioned in the mounting hole, and the convex ring is propped against the hole edge of the mounting hole; the brake ring is arranged in the middle of the band-type brake ring, the band-type brake ring is inwards recessed to form an annular groove, the groove bottom of the annular groove is the thin-wall deformation part, the annular groove and the thin-wall deformation part form the brake ring, and the annular groove and the hole wall of the mounting hole form the closed space;
The servo motor is in transmission connection with the harmonic speed reducer through a belt wheel assembly, the belt wheel assembly comprises belt wheels, a synchronous belt and an adjusting mechanism, an output shaft of the servo motor is connected with one belt wheel, an input shaft of the harmonic speed reducer is connected with the other belt wheel, the two belt wheels are in transmission connection through the synchronous belt, and the adjusting mechanism is arranged on the synchronous belt;
The device also comprises a hollow wire passing tube, wherein the hollow wire passing tube is arranged in the middle area of the harmonic speed reducer and the rapid positioning platform in a penetrating way, and a gas tube is arranged in the hollow wire passing tube;
The quick positioning assembly comprises a positioning disc, a quick positioning ring and a zero positioning piece, the hollow wire passing pipe is connected with the positioning disc, the positioning disc is fixedly sleeved on an output shaft of the harmonic speed reducer, the band-type brake ring is sleeved on the positioning disc, the quick positioning ring is arranged on one side, deviating from the harmonic speed reducer, of the positioning disc, and the zero positioning piece is arranged on one side, deviating from the harmonic speed reducer, of the quick positioning ring;
the hydraulic cantilever five-axis platform comprises a band-type brake ring, and the design method of the band-type brake ring comprises the following steps:
Step a, determining the maximum torque required by a band-type brake ring;
T=9550P/n，P=F×V，V=πR×n/30；
p is power, the unit is kW, n is rotating speed, the unit is r/min; the torque unit is Nm, the torque W, the torque F, the action radius R, F=W/R, the linear speed V, and the unit is R/min;
Step b, designing the inner diameter R1 of the band-type brake ring;
r1=r+l, l=0.005 mm-0.01mm, R is the outer diameter of the positioning disc locked by the band-type brake ring;
step c, designing the thickness h of the thin-wall deformation part of the brake ring of the band-type brake ring;
h=h/10, H being the maximum thickness of the gate ring;
step d, designing the width of the thin-wall deformation part of the brake ring of the band-type brake ring as b;
b=b/2; b is the maximum width of the band-type brake ring;
And e, checking the maximum torque of the locking state of the band-type brake.
2. The oil pressure cantilever five-axis platform according to claim 1, wherein the shell comprises a shell body, a first cover body and a second cover body, the first cover body and the second cover body are respectively covered on two opposite sides of the shell body, a containing cavity is formed among the shell body, the first cover body and the second cover body, the servo motor, the harmonic reducer and the quick positioning platform are all installed in the containing cavity, and a partial area of the quick positioning platform stretches out of the first cover body.
3. The oil pressure cantilever five-axis platform according to claim 1, wherein annular grooves are arranged on two sides of the annular groove, and a sealing ring is arranged in the annular groove.
4. The oil pressure cantilever five-axis platform according to claim 3, wherein an annular groove corresponding to the sealing ring is arranged on the wall of the mounting hole.
5. The oil boom five spool platform of claim 1, wherein the oil system comprises a brake oil line, a pressure regulator, and a joint; the brake oil pipe is connected with the oil path interface through the connector, and the pressure regulator is arranged on the brake oil pipe and used for regulating the oil pressure in the brake oil pipe.
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