CN212705447U - Five-axis linkage numerical control machine tool AC/BC main shaft driving swing head - Google Patents
Five-axis linkage numerical control machine tool AC/BC main shaft driving swing head Download PDFInfo
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- CN212705447U CN212705447U CN202021518028.1U CN202021518028U CN212705447U CN 212705447 U CN212705447 U CN 212705447U CN 202021518028 U CN202021518028 U CN 202021518028U CN 212705447 U CN212705447 U CN 212705447U
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Abstract
The utility model discloses a five-axis linkage numerical control machine tool AC/BC main shaft driving swing head, which comprises an upper swing mechanism, a lower swing mechanism and a rotary table; the upper swing mechanism comprises a C-axis torque motor, a C axis and a transmission connecting piece; the C-axis torque motor is in driving connection with the C axis and the transmission connecting piece; the lower swing mechanism comprises a driving motor, a transmission mechanism, an A shaft and a main shaft box body; the main shaft box body is in a shape of Jiong, the driving motor is arranged at the upper end inside the main shaft box body, the shaft A is arranged in the middle of the main shaft box body and hinged on the main shaft box body and is in driving connection with the driving motor through the transmission mechanism, and the swinging plane of the shaft A is parallel to the central line of the shaft C; the upper end of the rotary table is fixedly connected with the transmission connecting piece, and the lower end of the rotary table is fixedly connected with the main spindle box body. The utility model discloses rigidity is good, and the precision is high, operates steadily, has bigger space of swaing, and the moment of torsion is high, and stability is good.
Description
Technical Field
The utility model relates to a machine tool design preparation technical field, more specifically the utility model relates to a five-axis linkage digit control machine tool AC BC main shaft drive yaw that says so.
Background
At present, a five-axis linkage machine tool is based on 3 linear coordinate motions and 2 angular coordinate motions, so that five-axis relative linkage between the machine tool (milling machine) and a part to be machined is realized, a cutting edge part of a tool bit always moves along the tangent plane direction of a curved surface to be machined, the curved surface machining reaches an ideal cutting state, and the machining of the part at any angle (within a certain machining range) is realized.
The double-swing-angle numerical control universal milling head in the traditional structure realizes the driving of the milling head through a transmission mechanism. The intermediate transmission link adopts gear transmission, synchronous belt transmission or worm and gear transmission. In the traditional scheme, although the cost is low, the requirement on the machining precision of the gear, the synchronous pulley or the worm gear is high; and because the existence of the intermediate transmission link, rotational inertia, elastic deformation, reverse clearance, motion lag, friction, vibration, noise and abrasion are generated, so that the precision and the stability of the double-swing-angle numerical control universal milling head system are reduced over time.
Therefore, how to provide a five-axis linkage numerical control machine tool AC/BC spindle driving swing head with high rigidity, high precision and stable operation is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of this, the utility model provides a five-axis linkage digit control machine tool AC BC main shaft drive yaw that high rigidity, high accuracy, operate steadily.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an AC/BC spindle driving swing head of a five-axis linkage numerical control machine tool comprises an upper swing mechanism, a lower swing mechanism and a rotary table.
The upper swing mechanism comprises a C-axis torque motor, a C axis and a transmission connecting piece; the C-axis torque motor is in driving connection with the C axis and the transmission connecting piece;
the lower swing mechanism comprises a driving motor, a transmission mechanism, an A shaft and a main shaft box body; the main shaft box body is shaped like Jiong, the driving motor is arranged at the upper end inside the main shaft box body, the shaft A is arranged in the middle of the main shaft box body and hinged to the main shaft box body and is in driving connection with the driving motor through the transmission mechanism, and the swinging plane of the shaft A is parallel to the central line of the shaft C;
the upper end of the rotary table is fixedly connected with the transmission connecting piece, and the lower end of the rotary table is fixedly connected with the main spindle box body.
Firstly the utility model discloses the C axle is driven by torque motor, relative and traditional mechanical transmission driven double pendulum cutter head, and its transmission link is few, transmission mode and overall arrangement are simple, the transmission is steady, the precision is high, greatly reduced manufacturing cost, secondly the utility model discloses a lower pendulum mechanism overall structure is compact, and the A axle uses the drive mechanism structure to reduce A axle drive overall dimension to utilize driving motor to have bigger space of swaing, and the moment of torsion is high, and stability is good.
Furthermore, a first braking mechanism is arranged on the outer side of the upper end of the shaft C and comprises a first braking piece and a first braking hoop arranged on the inner side of the first braking piece, and the first braking hoop is fixed on the outer side of the shaft C and rotates synchronously with the shaft C.
Adopt above-mentioned technical scheme, the utility model discloses can realize the accurate control to the C axle, can effectual assurance C axle steady operation and have reliable rigidity.
Further, the C-axis torque motor comprises an outer shell, a stator and a rotor, wherein the stator is fixed on the inner side of the outer shell;
c axle) lower extreme is fixed with C axle fixing base, C axle fixing base with transmission connecting piece adaptation fixed connection just the rotor passes through the drive of transmission connecting piece the rotor rotates.
Furthermore, a C shaft protective sleeve is further sleeved on the outer side of the C shaft, and a water path and an oil path are respectively arranged inside the C shaft protective sleeve and used for providing cooling, lubricating water and oil required by the C shaft.
Adopt above-mentioned technical scheme, the utility model discloses a C axle cooling water route and hydraulic pressure oil circuit have fully guaranteed the stability of C axle operation.
Further, its characterized in that, the revolving stage includes revolving stage casing and revolving stage bearing, revolving stage casing with shell body fixed connection, the revolving stage bearing outside is fixed in the revolving stage casing and inboard with C axle fixing base fixed connection.
The utility model discloses well outer casing forms fixed device with revolving stage casing fixed connection, and C axle fixing base rotates and drives the main shaft box and realize rotatoryly.
Furthermore, the transmission mechanism comprises a driving bevel gear, a middle shaft anti-backlash gear and an A shaft driving wheel;
the driving bevel gear is fixed on an output shaft of the driving motor, the shaft A driving wheel is fixed on one side of the shaft A, and the intermediate shaft anti-backlash gear is in gear joint with the driving bevel gear and the shaft A driving wheel.
In the conventional gear transmission, a certain gap exists in the meshing of a gear pair, and for a metal cutting spindle box, when the load of a spindle changes, the transmission resistance changes suddenly, the meshing tooth surface of a gear changes, and the gap impacts, so that noise and vibration adverse effects are generated, the processing quality of parts is influenced, and a cutter is damaged too quickly; adopt above-mentioned technical scheme, the utility model discloses can effectual elimination gear drive system clearance, make the operation of A axle more stable, the accuracy is higher.
Further, a bearing is arranged on the other side of the shaft A and is fixed in the main shaft box body; the second brake mechanism comprises a second brake piece and a second brake hoop arranged on the inner side of the second brake piece, and the second brake hoop is fixed on the outer side of the shaft A and located at the outer side end of the bearing and synchronously rotates with the shaft A.
Furthermore, the first brake piece and the second brake piece are hydraulic brake pieces, and the first brake piece and the second brake piece are communicated with the hydraulic oil path.
The utility model discloses a its precision of hydraulic braking is high, and is effectual, and rigidity is high.
Further, the device also comprises an angle detection device, wherein the angle detection device comprises a C-axis circular grating and an A-axis circular grating;
the C-axis circular grating is fixed on the C axis and is positioned at the outer side end of the first braking mechanism; the A-axis circular grating is fixed on the A axis and is positioned at the outer side end of the second brake mechanism;
c axle circle grating and A axle circle grating all include the grating casing, grating casing inner chamber top buckle is connected with the grating base, grating base left and right sides both ends are all opened logical unthreaded hole, logical unthreaded hole upper end is equipped with the photoelectric conversion pipe, grating base bottom middle part movable mounting has the axle sleeve, the axle sleeve is established C axle or A is epaxial, movable grating and luminescent circuit board have been cup jointed at axle sleeve outside middle part, luminescent circuit board left end is equipped with the signal transmission interface, the luminescent circuit board upper end left and right sides all is equipped with the photoelectric receiving tube, the luminescent circuit board lower extreme is equipped with shock pad 0.
The utility model discloses connection stability is high, and anti deformability is strong, and the radiating effect is good, has improved the life of measuring accuracy nature and caliber greatly. And a closed-loop design scheme is adopted, the control of the rotation angle can be accurately ensured by utilizing the C-axis circular grating and the A-axis circular grating, and the accuracy is improved.
Further, the rotation angle of the C shaft is +/-280 degrees; the rotation angle of the A axis is +/-130 degrees.
The utility model discloses the precision is high, and the rigidity is good, and the structure is compacter, moves more steadily.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of an overall structure of an AC/BC spindle-driven swing head of a five-axis linkage numerical control machine tool according to the present invention;
FIG. 2 is a schematic structural diagram of an angle detecting device in an AC/BC spindle-driven swing head of a five-axis linkage numerical control machine tool according to the present invention;
wherein, 1 is an upward swinging mechanism; 11 is a C-axis torque motor; 111 is an outer shell; 112 is a stator; 113 is a rotor; 12 is a C axis; 13 is a transmission connecting piece; 14 is a C-axis protective sleeve; 2 is a lower swing mechanism; 21 is a driving motor; 22 is a transmission mechanism; 221 is a driving bevel gear; 222 is a middle shaft anti-backlash gear; 223 is an A-axis driving wheel; 23 is an A axis; 231 is a bearing; 24 is a main shaft box body; 3 is a rotary table; 31 is a turntable shell; 31 is a turntable bearing; 4 is a first brake mechanism; 41 is a first brake component; 42 is a first brake hoop; 5 is a second brake mechanism; 51 is a second brake component; 52 is a second brake hoop; 61 is a C-axis circular grating; 62 is an A-axis circular grating; 63 is a grating shell; 64 is a grating base; 65 is a light through hole; 66 is a photoelectric luminous tube; 67 is a shaft sleeve; 68 is a movable grating, and 69 is a luminous circuit board; and 60 is a shock pad.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to fig. 2, the embodiment of the present invention discloses an AC/BC spindle driving swing head of a five-axis linkage numerical control machine tool, which includes an upper swing mechanism 1, a lower swing mechanism 2 and a rotary table 3.
The upper swinging mechanism 1 comprises a C-axis torque motor 11, a C-axis 12 and a transmission connecting piece 13; the C-axis torque motor 11 is in driving connection with the C-axis 12 and the transmission connecting piece 13;
the lower swing mechanism 2 comprises a driving motor 21, a transmission mechanism 22, an A shaft 23 and a main shaft box body 24; the main shaft box body 24 is shaped like Jiong, the driving motor 21 is arranged at the upper end inside the main shaft box body 24, the A shaft 23 is arranged in the middle of the main shaft box body 24 and hinged on the main shaft box body 24 and is in driving connection with the driving motor 21 through the transmission mechanism 22, and the swinging plane of the A shaft 23 is parallel to the central line of the C shaft 12;
the upper end of the rotary table 3 is fixedly connected with the transmission connecting piece 13, and the lower end thereof is fixedly connected with the main spindle box 24.
At first the utility model discloses the C axle is driven by torque motor, relative and traditional mechanical transmission driven double pendulum cutter head, and its transmission link is few, transmission mode and overall arrangement are simple, the transmission is steady, the precision is high, greatly reduced manufacturing cost, secondly the utility model discloses a 2 overall structure compactness of lower hem mechanism, A axle 23 use drive mechanism 22 structure to have reduced A axle drive overall dimension to utilize driving motor 21 to have bigger space of swaing, and the moment of torsion is high, and stability is good.
More specifically, the C-axis torque motor 11 is a DD direct drive motor. The direct drive is to directly connect a direct drive motor (a linear motor or a torque motor) to a load under the control of a drive system, so as to realize the direct drive of the load. With this arrangement, all mechanical drive components (ball screw assemblies, rack and pinion, drive belts/pulleys, and gear boxes, etc.) are eliminated, eliminating the backlash, compliance, and other problems associated with mechanical drives.
In this embodiment, the outer side of the upper end of the C-shaft 12 is provided with a first braking mechanism 4, the first braking mechanism 4 includes a first braking member 41 and a first braking hoop 42 disposed on the inner side of the first braking member 41, and the first braking hoop 42 is fixed on the outer side of the C-shaft 12 and rotates synchronously with the C-shaft 12.
Adopt above-mentioned technical scheme, the utility model discloses can realize the accurate control to C axle 12, can effectual assurance C axle 12 steady operation and have reliable rigidity.
In this embodiment, the C-axis torque motor 11 includes an outer housing 111, a stator 112, and a rotor 113, wherein the stator 112 is fixed inside the outer housing 111;
the lower end of the C shaft 12) is fixed with a C shaft fixing seat 121, the C shaft fixing seat 121 is matched and fixedly connected with the transmission connecting piece 13, and the rotor 113 drives the rotor 113 to rotate through the transmission connecting piece 13.
In this embodiment, the C-axis protective sleeve 14 is further sleeved outside the C-axis 12, and a water path and an oil path are respectively disposed inside the C-axis protective sleeve 14, so as to provide cooling, lubricating water and oil for the C-axis 12.
The C axle 12 of this embodiment sets up cooling water route and hydraulic pressure oil circuit in the C axle protective sheath 14, has fully guaranteed the stability of C axle 12 operation.
In this embodiment, the turntable 3 includes a turntable housing 31 and a turntable bearing 32, the turntable housing 31 is fixedly connected to the outer housing 111, the outer side of the turntable bearing 32 is fixed in the turntable housing 31, and the inner side of the turntable bearing is fixedly connected to the C-axis fixing base 121.
The utility model discloses well outer casing 111 forms fixed device with 31 fixed connection of revolving stage casing, and C axle fixing base 121 rotates and drives the main shaft box 24 and realizes rotatoryly.
In this embodiment, the transmission mechanism 22 includes a driving helical gear 221, a middle shaft anti-backlash gear 222 and an a-shaft driving wheel 223;
the driving bevel gear 221 is fixed on the output shaft of the driving motor 21, the a-shaft driving wheel 223 is fixed on one side of the a-shaft 23, and the intermediate shaft anti-backlash gear 222 is in gear engagement with the driving bevel gear 221 and the a-shaft driving wheel 223.
In the conventional gear transmission, a certain gap exists in the meshing of a gear pair, and for a metal cutting spindle box, when the load of a spindle changes, the transmission resistance changes suddenly, the meshing tooth surface of a gear changes, and the gap impacts, so that noise and vibration adverse effects are generated, the processing quality of parts is influenced, and a cutter is damaged too quickly; adopt above-mentioned technical scheme, the utility model discloses can effectual elimination gear drive system clearance, make the operation of A axle 23 more stable, the accuracy is higher.
In this embodiment, the bearing 231 is disposed on the other side of the a-shaft 23, and the bearing 231 is fixed in the main shaft box 24; the second brake mechanism 5 further comprises a second brake member 51 and a second brake hoop 52 arranged on the inner side of the second brake member 51, wherein the second brake hoop 52 is fixed on the outer side of the a shaft 23 and located at the outer side end of the bearing 231 and rotates synchronously with the a shaft 23.
In the present embodiment, the first brake material 41 and the second brake material 51 are hydraulic brake materials, and the first brake material 41 and the second brake material 51 communicate with the hydraulic oil passage.
The embodiment adopts hydraulic braking, and has high precision, good effect and high rigidity.
In this embodiment, the device further comprises an angle detection device, wherein the angle detection device comprises a C-axis circular grating 61 and an a-axis circular grating 62;
the C-axis circular grating 61 is fixed on the C-axis 12 and is positioned at the outer side end of the first brake mechanism 4; the A-axis circular grating 62 is fixed on the A-axis 23 and is positioned at the outer side end of the second brake mechanism 5;
c axle circle grating 61 and A axle circle grating 62 all include grating housing 63, grating housing 63 inner chamber top buckle is connected with grating base 64, grating base 64 is controlled both ends and has all been opened logical unthreaded hole 65, logical unthreaded hole 65 upper end is equipped with photoelectric light emitting tube 66, grating base 64 bottom middle part movable mounting has axle sleeve 67, axle sleeve 67 cover is established on C axle 12 or A axle 23, axle sleeve 67 outside middle part has cup jointed moves grating 68 and luminescent circuit board 69, luminescent circuit board 69 left end is equipped with signal transmission interface 691, luminescent circuit board 69 upper end left and right sides all is equipped with photoelectricity receiving tube 692, luminescent circuit board 69 lower extreme is equipped with shock pad 60.
This embodiment connection stability is high, and anti deformation performance is strong, and the radiating effect is good, has improved the life of measuring accuracy nature and caliber greatly. And a closed-loop design scheme is adopted, the control of the rotation angle can be accurately ensured by using the C-axis circular grating 61 and the A-axis circular grating 62, and the accuracy is increased.
In this embodiment, the rotation angle of the C-axis 12 is ± 280 °; the rotation angle of the A axis is +/-130 degrees.
The embodiment has the advantages of high precision, good rigidity, more compact structure and more stable operation.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the embodiments. Thus, the present embodiments are not intended to be limited to the embodiments shown herein but are to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A five-axis linkage numerical control machine tool AC/BC spindle driving swing head is characterized by comprising
The upper swing mechanism (1), the upper swing mechanism (1) comprises a C-axis torque motor (11), a C-axis (12) and a transmission connecting piece (13); the C-axis torque motor (11) is in driving connection with the C-axis (12) and the transmission connecting piece (13);
the lower swing mechanism (2), the lower swing mechanism (2) comprises a driving motor (21), a transmission mechanism (22), an A shaft (23) and a main shaft box body (24); the main shaft box body (24) is in the shape of Jiong, the driving motor (21) is arranged at the upper end of the inside of the main shaft box body (24), the shaft A (23) is arranged in the middle of the main shaft box body (24), is hinged to the main shaft box body (24) and is in driving connection with the driving motor (21) through the transmission mechanism (22), and the swinging plane of the shaft A (23) is parallel to the central line of the shaft C (12);
the upper end of the rotary table (3) is fixedly connected with the transmission connecting piece (13), and the lower end of the rotary table is fixedly connected with the spindle box body (24).
2. The AC/BC spindle driving swing head of the five-axis linkage numerical control machine tool according to claim 1, wherein a first brake mechanism (4) is arranged on the outer side of the upper end of the C shaft (12), the first brake mechanism (4) comprises a first brake piece (41) and a first brake hoop (42) arranged on the inner side of the first brake piece (41), and the first brake hoop (42) is fixed on the outer side of the C shaft (12) and rotates synchronously with the C shaft (12).
3. The AC/BC spindle drive pendulum head of the five-axis linkage numerical control machine tool according to claim 2, wherein the C-axis torque motor (11) comprises an outer shell (111), a stator (112) and a rotor (113), the stator (112) is fixed inside the outer shell (111);
the lower end of the C shaft (12) is fixedly provided with a C shaft fixing seat (121), the C shaft fixing seat (121) is fixedly connected with the transmission connecting piece (13) in a matching mode, and the rotor (113) drives the rotor (113) to rotate through the transmission connecting piece (13).
4. The AC/BC spindle driving swing head of the five-axis linkage numerical control machine tool according to claim 2, wherein a C-axis protective sleeve (14) is further sleeved outside the C-axis (12), and a water path and an oil path are respectively arranged inside the C-axis protective sleeve (14) and used for providing water and oil which are required to be cooled and lubricated by the C-axis (12).
5. The AC/BC spindle driving swing head of the five-axis linkage numerical control machine tool according to claim 3, wherein the turntable (3) comprises a turntable shell (31) and a turntable bearing (32), the turntable shell (31) is fixedly connected with the outer shell (111), the outer side of the turntable bearing (32) is fixed in the turntable shell (31), and the inner side of the turntable bearing is fixedly connected with the C-axis fixing seat (121).
6. The AC/BC spindle drive pendulum head of a five-axis linkage numerical control machine tool according to claim 2, wherein the transmission mechanism (22) comprises a driving bevel gear (221), a middle shaft anti-backlash gear (222) and an A-axis driving wheel (223);
the driving bevel gear (221) is fixed on an output shaft of the driving motor (21), the shaft A driving wheel (223) is fixed on one side of the shaft A (23), and the intermediate shaft anti-backlash gear (222) is in gear joint with the driving bevel gear (221) and the shaft A driving wheel (223).
7. The AC/BC spindle driving swing head of the five-axis linkage numerical control machine tool according to claim 6, wherein a bearing (231) is arranged on the other side of the A shaft (23), and the bearing (231) is fixed in the spindle box body (24); still include second arrestment mechanism (5), second arrestment mechanism (5) include second braking piece (51), locate second braking staple bolt (52) of second braking piece (51) inboard, second braking staple bolt (52) are fixed the outside of A axle (23) and are located the outside end of bearing (231), and with A axle (23) synchronous revolution.
8. The AC/BC spindle drive pendulum head of a five-axis linkage numerical control machine tool according to claim 7, wherein the first brake piece (41) and the second brake piece (51) are hydraulic brake pieces, and the first brake piece (41) and the second brake piece (51) are communicated with a hydraulic oil path.
9. The AC/BC spindle driving swing head of the five-axis linkage numerical control machine tool according to claim 7, further comprising an angle detection device, wherein the angle detection device comprises a C-axis circular grating (61) and an A-axis circular grating (62);
the C-axis circular grating (61) is fixed on the C-axis (12) and is positioned at the outer side end of the first braking mechanism (4); the A-axis circular grating (62) is fixed on the A-axis (23) and is positioned at the outer side end of the second brake mechanism (5).
10. The AC/BC spindle drive pendulum head of any one of claims 1 to 9, wherein the rotation angle of the C-axis (12) is ± 280 °; the rotation angle of the A axis is +/-130 degrees.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021518028.1U CN212705447U (en) | 2020-07-28 | 2020-07-28 | Five-axis linkage numerical control machine tool AC/BC main shaft driving swing head |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021518028.1U CN212705447U (en) | 2020-07-28 | 2020-07-28 | Five-axis linkage numerical control machine tool AC/BC main shaft driving swing head |
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| CN212705447U true CN212705447U (en) | 2021-03-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111730362A (en) * | 2020-07-28 | 2020-10-02 | 北京博鲁斯潘精密机床有限公司 | High-rigidity high-precision high-speed five-axis linkage numerical control machine tool AC/BC spindle driving swing head |
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2020
- 2020-07-28 CN CN202021518028.1U patent/CN212705447U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111730362A (en) * | 2020-07-28 | 2020-10-02 | 北京博鲁斯潘精密机床有限公司 | High-rigidity high-precision high-speed five-axis linkage numerical control machine tool AC/BC spindle driving swing head |
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