CN111230522A - Movable five-axis linkage swing head device - Google Patents
Movable five-axis linkage swing head device Download PDFInfo
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- CN111230522A CN111230522A CN202010136129.0A CN202010136129A CN111230522A CN 111230522 A CN111230522 A CN 111230522A CN 202010136129 A CN202010136129 A CN 202010136129A CN 111230522 A CN111230522 A CN 111230522A
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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
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Abstract
The invention discloses a movable five-axis linkage swing head device which comprises a main shaft unit, a hydrostatic bearing unit, an oil pressure surrounding brake unit, a cam transmission unit and an axial feeding unit. Through the cooperative operation of different series of units, the problems of high rigidity and high precision in the process of cutting the three-dimensional curved surface of the five-axis linkage machining center are solved, the service life and the precision of the machine tool are effectively prolonged, the machine tool can move in one axial direction, and the modularized assembly is realized.
Description
Technical Field
The invention relates to the technical field of five-axis linkage turning and milling composite swing head devices, in particular to a movable five-axis linkage swing head device.
Background
The existing five-axis linkage machine tool swing head mainly adopts the modes of gears, worm gears, torque motors and the like, the biggest problem is that the five-axis linkage machine tool swing head cannot be applied to heavy cutting and precision problems, and the heavy cutting needs to be imported into European products.
The existing products mostly adopt a method of processing a main shaft by a turntable, and the turntable bearing or a tapered roller bearing is mostly adopted in the products, so that the product rigidity is insufficient due to the reasons of raw material strength, bearing clearance and the like, a transmission part is easy to wear and cannot be repaired after being worn, the service life is short, and the manufacturing cost is high.
Disclosure of Invention
In view of the above technical problems in the related art, the present invention provides a movable five-axis linkage swing head device, which can overcome the above disadvantages in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
a movable five-axis linkage swinging head device comprises a main shaft unit, wherein the main shaft unit comprises an electric main shaft, a main shaft fixing body, a wire inlet, an eccentric adjustment bearing assembly and a pipeline channel, the main shaft unit is connected with a hydrostatic bearing unit, the hydrostatic bearing unit comprises a hydrostatic bearing built-in device and a hydrostatic bearing external device, the hydrostatic bearing built-in device comprises a sealing element, a pressure oil groove and a lower cavity oil duct, a deep cavity is arranged below the lower cavity oil duct, a shallow cavity is arranged below the deep cavity, an axial oil return groove is arranged below the shallow cavity, a hydrostatic fixing adjusting nut is arranged on one side of the axial oil return groove, the hydrostatic bearing external device comprises a hydrostatic body, a body, an oil return opening and a hydrostatic oil inlet, a nut supporting member is arranged on one side of the hydrostatic oil inlet, a hydrostatic outlet is arranged on one side of the nut supporting member, and the hydrostatic bearing unit is connected with, the brake unit is embraced to oil pressure includes sealed unit, oil pressure passageway, brake ring, bearing frame one, feeds the lead screw, the brake unit is embraced to the oil pressure and is connected with cam drive unit, cam drive unit includes hydrostatic bearing supporting member, cam drive subassembly, guide rail slider, cam drive subassembly includes the graduated disk, the graduated disk outside is equipped with roller bearing, the graduated disk with roller bearing fixed connection, the roller bearing outside is equipped with drive cam, roller bearing with drive cam roll connection, cam drive unit and axial feed unit are connected.
Further, the spindle unit is a swing electric spindle unit.
Further, the number of the sealing members is four.
Furthermore, the number of the axial oil return grooves is two.
Further, the lower cavity oil passage is P0An anti-corrosion pipeline.
Further, the nut support members are two.
Furthermore, the axial feeding unit consists of an axial feeding screw rod supporting unit, a servo driving motor, a linear guide rail, a coupler and a bearing seat II.
Furthermore, the servo driving motor is driven by double servo synchronous drives.
The invention has the beneficial effects that: the different series units work together, so that the following advantages are achieved:
(1) the cam roller type transmission is adopted, so that high-precision transmission is obtained, large-torque driving is realized, and high transmission rigidity is realized;
(2) the device has longer service life and more sufficient rigidity than a worm gear and a worm;
(3) compared with a gear, the gear saves space under the same torque and has stronger rigidity;
(4) the cost is lower than that of a torque motor, and the motor is more suitable for being used under complex processing conditions;
(5) the novel encircling brake device has larger and more stable braking force, and overcomes the instability of the existing encircling brake;
(6) the hydrostatic bearing which is used only by high-end equipment is adopted, so that the problems of small bearing capacity, easy abrasion and large gap of the conventional bearing are solved, and the integral mechanism has stronger rigidity, higher stability and longer service life;
(7) the roller cam transmission rigidity is stronger, and transmission efficiency is higher, in case wearing and tearing appear, the precision can be resumeed in simple adjustment, if the installation roller cam transmission can not realize the auto-lock, and the impact is finally fed back to the motor, and the motor receives outside transmission moment of torsion and can shut down the warning, and the effectual lathe of having protected is not damaged, even if the striking also can be intact operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a cross-sectional view of a movable five-axis linkage swing head apparatus according to an embodiment of the present invention;
FIG. 2 is a block diagram of a movable five axis linkage swing head apparatus according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of an oil pressure wrap brake unit according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a cam gear unit according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a cam drive assembly according to an embodiment of the present invention;
FIG. 6 is a top cross-sectional view of a movable five-axis linkage swing head apparatus according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view of an axial feed unit according to an embodiment of the present invention;
in the figure: 1. a main shaft unit, 2, a hydrostatic bearing unit, 3, an oil pressure surrounding brake unit, 4, a cam transmission unit, 5, an axial feeding unit, 6, a hydrostatic oil inlet, 7, a nut supporting member, 8, a hydrostatic outlet, 9, an oil pressure channel, 10, a sealing unit, 11, a brake ring, 12, a hydrostatic bearing supporting member, 13, a cam transmission assembly, 14, an index plate, 15, a roller bearing, 16, a transmission cam, 17, the device comprises an eccentric adjusting bearing assembly, 18, an axial feeding screw rod supporting unit, 19, a servo driving motor, 20, a first bearing seat, 21, a feeding screw rod, 22, a guide rail sliding block, 23, a linear guide rail, 24, a coupler, 25, a second bearing seat, 26, a pipeline channel, 27, an oil return port, 28, a static pressure body, 29, a body, 30, a static pressure fixing and adjusting nut, 31, a main shaft fixing body, 32, an electric main shaft, 33 and a wire inlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
As shown in fig. 1 to 7, the movable five-axis linkage wobble head device according to the embodiment of the present invention includes a main shaft unit 1, where the main shaft unit 1 includes an electric main shaft 32, a main shaft fixing body 31, a wire inlet 33, an eccentric adjustment bearing assembly 17, and a pipeline passage 26, the main shaft unit 1 is connected to a hydrostatic bearing unit 2, the hydrostatic bearing unit 2 includes a hydrostatic bearing built-in device and a hydrostatic bearing external device, the hydrostatic bearing built-in device includes a sealing member, a pressure oil groove, and a lower cavity oil passage, a deep cavity is provided below the lower cavity oil passage, a shallow cavity is provided below the deep cavity, an axial oil return groove is provided below the shallow cavity, a hydrostatic fixing and adjusting nut 30 is provided on one side of the axial oil return groove, the hydrostatic bearing external device includes a hydrostatic body 28, a body 29, an oil return port 27, and a hydrostatic oil inlet 6, a nut support member 7 is provided, nut supporting member 7 one side is equipped with static pressure export 8, hydrostatic bearing unit 2 encircles brake unit 3 with the oil pressure and is connected, brake unit 3 is embraced to the oil pressure includes sealed unit 10, oil pressure passageway 9, brake ring 11, bearing frame one 20, feeds the lead screw 21, brake unit 3 is embraced to the oil pressure and cam drive unit 4 is connected, cam drive unit 4 includes hydrostatic bearing supporting member 12, cam drive subassembly 13, guide rail slider 22, cam drive subassembly 13 includes graduated disk 14, the graduated disk 14 outside is equipped with roller bearing 15, graduated disk 14 with roller bearing 15 fixed connection, the roller bearing 15 outside is equipped with drive cam 16, roller bearing 15 with drive cam 16 roll connection, cam drive unit 4 is connected with axial feed unit 5.
In one embodiment of the invention, the spindle unit 1 is a wobble electric spindle unit.
In one embodiment of the invention, the number of seals is four.
In one embodiment of the present invention, the number of the axial oil return grooves is two.
In an embodiment of the present invention, the lower chamber oil passage is P0An anti-corrosion pipeline.
In one embodiment of the present invention, the nut support members 7 are two.
In an embodiment of the present invention, the axial feeding unit 5 is composed of an axial feeding screw rod supporting unit 18, a servo driving motor 19, a linear guide rail 23, a coupling 24, and a second bearing seat 25.
In one embodiment of the present invention, the servo driving motor 19 is dual servo synchronous dual drive.
In order to facilitate understanding of the above-described technical aspects of the present invention, the above-described technical aspects of the present invention will be described in detail below in terms of specific usage.
First, hydrostatic bearing unit 2
Sliding bearings that use static lubrication are known as hydrostatic bearings. Static lubrication and dynamic lubrication principles are different, and a hydrostatic bearing is provided with pressure oil by an external lubricating oil pump to form a pressure oil film so as to bear load. Although many dynamic pressure bearings also supply pressure oil using a lubricating oil pump, their properties are different, most notably the oil supply pressure, which is much higher for hydrostatic bearings than for dynamic pressure bearings.
One of the main characteristics of hydrostatic bearings is that in a completely static state, a load-bearing oil film can be established, and it can be ensured that in the starting phase, there is no direct contact between the two surfaces of the friction pair, which is absolutely impossible in hydrodynamic bearings.
Therefore, when the rotor using the hydrostatic bearing is started, the hydrostatic lubrication system must be started first.
In operation, the hydrostatic bearing can also generate dynamic pressure effect due to relative movement of the friction pair, and when the dynamic pressure effect reaches a certain portion, the bearing becomes a hybrid bearing of dynamic pressure and static pressure.
By adopting the static pressure unit, the bearing capacity of the bearing is effectively improved, the processing precision is improved, the service life is prolonged, and the precision and the service life of the machine tool are effectively ensured.
Second, the oil pressure surrounds the brake unit 3
The oil pressure is embraced the brake and is had that the brake power is big, and is stable, compact structure's characteristics, and present armful all relies on material pressure deformation to realize the lock brake, has the inhomogeneous condition of brake power, and this problem is overcome in the novel armful of modified makes the brake power bigger, and the atress is more even, and the precision is more stable.
The advanced cam transmission unit 4 is adopted, so that high transmission precision is obtained;
1. the whole process has zero back clearance, and the elastic deformation caused by stress is avoided because of the rigid real zero back clearance;
2. the input shaft is supported by an eccentric sleeve, and the precision can be recovered by simple adjustment after the precision is worn;
3. the output shaft is vertically arranged with the output shaft, so that the space is saved;
4. the transmission between the roller bearing 15 and the transmission cam 16 is pure rolling transmission, the transmission efficiency is high, self-locking cannot be realized, even if external force impact is received, the bearing capacity is exceeded, self-locking cannot be realized, the speed reducer can rotate reversely, the servo motor alarms and stops working due to reverse rotation, and no large mechanical damage can be caused, so that the precision and the service life of the mechanism are more effectively protected;
5. the indexing disc 14 and the transmission cam 16 adopt an enveloping mode, the enveloping angle is larger than 100 degrees, at least five or more roller bearings 15 are adopted to be in contact transmission with the cam curved surface, the transmission torque is greatly increased, and the transmission rigidity is also increased, and the characteristics are incomparable advantages of common gears and worm gears;
6. the eccentric adjustment unit of innovation adopts three formula combination bearings, adds the mode of axial adjustment cover for eccentric adjustment is simpler, and more the moduleization, the concentricity of assembly is guaranteed better, and the axial clearance is littleer, advantage that the precision is higher, greatly reduced to assembly technical worker's requirement.
Four, axial feed unit 5
Adopt two servo synchronous double drives of advanced (also can adopt single servo drive according to customer's requirement), have clearance automatic adjustable's advantage, the lead screw will produce the clearance with the nut after using a period, if produce the clearance through the compensation of driver just can resume the precision, convenient and fast, the precision can guarantee for a long time that the advantage is obvious.
In summary, with the above technical solution of the present invention, the following advantages are achieved through the cooperative operation of different series units:
(1) the cam roller type transmission is adopted, so that high-precision transmission is obtained, large-torque driving is realized, and high transmission rigidity is realized;
(2) the device has longer service life and more sufficient rigidity than a worm gear and a worm;
(3) compared with a gear, the gear saves space under the same torque and has stronger rigidity;
(4) the cost is lower than that of a torque motor, and the motor is more suitable for being used under complex processing conditions;
(5) the novel encircling brake device has larger and more stable braking force, and overcomes the instability of the existing encircling brake;
(6) the hydrostatic bearing which is used only by high-end equipment is adopted, so that the problems of small bearing capacity, easy abrasion and large gap of the conventional bearing are solved, and the integral mechanism has stronger rigidity, higher stability and longer service life;
(7) the roller cam transmission rigidity is stronger, and transmission efficiency is higher, in case wearing and tearing appear, the precision can be resumeed in simple adjustment, if the installation roller cam transmission can not realize the auto-lock, and the impact is finally fed back to the motor, and the motor receives outside transmission moment of torsion and can shut down the warning, and the effectual lathe of having protected is not damaged, even if the striking also can be intact operation.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides a portable five-axis linkage sways first device, a serial communication port, including main shaft unit (1), main shaft unit (1) is including electricity main shaft (32), the fixed body of main shaft (31), inlet (33), eccentric adjustment bearing subassembly (17), pipeline passageway (26), main shaft unit (1) is connected with hydrostatic bearing unit (2), hydrostatic bearing unit (2) are including the built-in device of hydrostatic bearing, the external device of hydrostatic bearing, the built-in device of hydrostatic bearing includes sealing member, pressure oil groove, cavity of resorption oil duct below is equipped with dark chamber, dark chamber below is equipped with shallow chamber, shallow chamber below is equipped with axial oil return groove, axial oil return groove one side is equipped with static pressure fixed adjusting nut (30), the hydrostatic bearing device includes hydrostatic body (28), body (29), oil return opening (27), Static pressure oil inlet (6), static pressure oil inlet (6) one side is equipped with nut supporting member (7), nut supporting member (7) one side is equipped with static pressure export (8), hydrostatic bearing unit (2) encircle brake unit (3) with the oil pressure and be connected, brake unit (3) are surroundd to the oil pressure includes sealed unit (10), oil pressure passageway (9), brake ring (11), bearing frame (20), feed lead screw (21), brake unit (3) are surroundd to the oil pressure and cam drive unit (4) are connected, cam drive unit (4) include hydrostatic bearing supporting member (12), cam drive subassembly (13), guide rail slider (22), cam drive subassembly (13) include graduated disk (14), graduated disk (14) outside is equipped with roller bearing (15), graduated disk (14) with roller bearing (15) fixed connection, the outer side of the roller bearing (15) is provided with a transmission cam (16), the roller bearing (15) is in rolling connection with the transmission cam (16), and the cam transmission unit (4) is connected with the axial feeding unit (5).
2. The movable five-axis linkage swing head device according to claim 1, wherein the spindle unit (1) is a swing electric spindle unit.
3. The movable five-axis linkage wobble head apparatus of claim 1, wherein the number of seals is four.
4. The movable five-axis linkage wobble head apparatus of claim 1, wherein there are two axial oil return grooves.
5. The movable five-axis linkage wobble head apparatus of claim 1, wherein the lower cavity oil gallery is P0An anti-corrosion pipeline.
6. The movable five-axis linkage swing head device according to claim 1, wherein the nut support members (7) are two.
7. The movable five-axis linkage swing head device according to claim 1, wherein the axial feeding unit (5) is composed of an axial feeding screw rod supporting unit (18), a servo driving motor (19), a linear guide rail (23), a coupler (24) and a second bearing seat (25).
8. The movable five-axis linkage swing head device according to claim 7, wherein the servo drive motor (19) is dual servo synchronous dual drive.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911197895 | 2019-11-29 | ||
| CN2019111978951 | 2019-11-29 |
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| CN111230522A true CN111230522A (en) | 2020-06-05 |
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| CN202010136129.0A Pending CN111230522A (en) | 2019-11-29 | 2020-03-02 | Movable five-axis linkage swing head device |
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Application publication date: 20200605 |