CN206605238U - A kind of Numerical control cutting building-block machine - Google Patents
A kind of Numerical control cutting building-block machine Download PDFInfo
- Publication number
- CN206605238U CN206605238U CN201720165331.XU CN201720165331U CN206605238U CN 206605238 U CN206605238 U CN 206605238U CN 201720165331 U CN201720165331 U CN 201720165331U CN 206605238 U CN206605238 U CN 206605238U
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- Prior art keywords
- workbench
- saw blade
- bed piece
- gantry
- base
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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
Abstract
The utility model discloses a kind of Numerical control cutting building-block machine, including bed piece（6）, it is characterized in, described bed piece（6）X sets turnable workbench to processing axis side（1）, workbench may be reversed（1）Right side sets gantry cutter device（2）With saw blade cutter device（3）, in bed piece（6）Groove in set waste material recovery device（5）, waste material recovery device（5）Positioned at turnable workbench（1）Underface；Bed piece（6）Electrical control gear is fixedly installed in Y-direction side（4）, electrical control gear（4）It is connected by circuit with electric component；Using workpiece clamped one time, numerical control synchronous cutting, workpiece process is full-automatic, and production efficiency greatly improved, production cost is reduced.
Description
Technical field：
The utility model is related to field of mechanical technique, specifically a kind of Numerical control cutting building-block machine.
Background technology：
With the increasingly increase of middle heavy truck vehicle bridge demand, the requirement of vehicle bridge process equipment is also being improved constantly, current vehicle bridge
In factory's axle housing processing line, cutting bridge casing lute holes and saw axle housing two ends generally need three stations, the i.e. cutting of Chinese lute hole, drawn
Line, cutting body two ends, process equipment are more, and personnel depaly is more, wastes time and energy.
Utility model content：
The purpose of this utility model is to overcome the shortcomings of above-mentioned prior art, and provides a kind of Numerical control cutting building-block machine；
The problem of mainly solving existing axle housing machining tool inefficiency.
The technical solution of the utility model is：A kind of Numerical control cutting building-block machine, including bed piece, it is characterised in that
Described bed piece X sets turnable workbench to processing axis side, may be reversed set on the right side of workbench gantry cutter device and
Saw blade cutter device, sets waste material recovery device in the groove of bed piece, and waste material recovery device, which is located at, may be reversed workbench just
Lower section；Electrical control gear is fixedly installed in bed piece Y-direction side, and electrical control gear is connected by circuit with electric component.
Further, described gantry cutter device can carry out the moving interpolation of XYZ axles；Gantry cutter device is cut for flame
Cut or plasma cut.
Further, the saw blade cutter device it is overall in bed piece X to carrying out positioning movement, saw blade cutter device
Cutting movement above and below the progress of saw blade case.
Further, described bed piece includes setting on lathe base, lathe base on the outside of machine tool guideway, lathe base
If rack, rack is located at below machine tool guideway.
Further, described turnable workbench includes workbench, and table core has circular port, and workbench is by turning over
Rotating shaft is connected with support frame；Workbench is provided with the energy X that Y, Z-direction are adjusted manually to detent mechanism, Y-direction self-centering clamping mechanism, Z
To hold-down mechanism and switching mechanism；
X is to detent mechanism, including Y-direction guide groove, and Y-direction guide groove is fixedly installed on workbench circular port Y-direction side, Z-direction
Guide groove is arranged in Y-direction guide groove, and the first sliding block is arranged in Z-direction guide groove, and alignment pin is fixedly connected with the first sliding block, fixed
Position pin Z-direction movement；
Y-direction self-centering clamping mechanism, including the first removable carry-over bar, the first removable carry-over bar are mounted on workbench X
Into the grooved rail at two ends, first removable carry-over bar one end is connected by contiguous block with the first oil cylinder, the first removable carry-over bar
Engaged with being mounted on the first gear in the middle part of grooved rail in reverse side fixing axle, and distribution in a center of symmetry；
Z-direction hold-down mechanism, including pressure strip, pressure strip be arranged on the second cylinder piston rod on, piston rod straight up, and
90 ° of rotations of energy, second oil cylinder is arranged on by grooved rail, and distribution in a center of symmetry；
Switching mechanism, including the 3rd oil cylinder, the 3rd oil cylinder are arranged in the first support of workbench side, first support and machine
Bed lathe bed is fixed, and provided with rack groove guide rail, the second removable carry-over bar is arranged in rack groove guide rail, and with the 3rd oil cylinder
Connection；Second gear is fixed on trip shaft, and is engaged with the second removable carry-over bar.
Further, described gantry cutter device, including portal frame, portal frame is arranged on the machine tool guideway of bed piece
On, portal frame is divided on portal frame base, portal frame base equipped with X to servomotor, and X drives the 3rd gear to servomotor,
3rd gear is engaged with the rack on bed piece；
Gantry top guide rail is set at the top of portal frame, gantry top sliding block is arranged on the guide rail of gantry top, and gantry top sliding block and Y-direction are same
Step band is fixedly mounted, and the Y-direction timing belt wheel drive that Y-direction timing belt is driven by Y-direction servomotor, Y-direction servomotor is arranged on
In the second support that guide rail one end is pushed up at gantry；
L-type flat board is fixedly mounted with gantry top sliding block, and L-type flat board Z-direction is equipped with flat board guide rail, and the second sliding block is arranged on
On flat board guide rail, cutting gun is arranged on the second sliding block, and the second sliding block is fixedly mounted with Z-direction timing belt, and timing belt is by Z-direction servo
Motor-driven Z-direction timing belt wheel drive, Z-direction servomotor is arranged on L-type flat board X on flat board.
Further, there are conical funnel, sawing machine on described saw blade cutter device, including sawing machine base, sawing machine base
Floor installation is on the machine tool guideway of bed piece, and sawing machine base is equipped with servomotor, and servomotor drives the 4th gear, the 4th
Gear is engaged with the rack on bed piece；
Saw blade case and hydraulic cylinder are housed, hydraulic cylinder is connected with axle in the middle part of base, saw blade case one end and base on saw blade base
End axis are connected, and hydraulic cylinder piston rod is connected with the offset beam axle of saw blade case, are driven and are transported above and below saw blade case by Driven by Hydraulic Cylinder
It is dynamic.
A kind of Numerical control cutting building-block machine described in the utility model compared with the prior art have following good effect, 1,
Using turnable workbench, clamping workpiece is simple and quick, accurate work piece positioning；2nd, building-block machine of the present utility model, is once filled
Folder, the multiple working procedure such as flame or plasma cut, saw blade cutting can be completed simultaneously, and with the two-sided working ability of workpiece, realize
The machining ability of multistation all-in-one, compact conformation, production cost is low, mitigates enterprise's labour demand, be greatly improved plus
The operating efficiency of work lathe.
Brief description of the drawings:
Fig. 1 is Y-direction structural representation of the present utility model；
Fig. 2 is X of the present utility model to structural representation；
Fig. 3 is machine tool body structure schematic diagram of the present utility model；
Fig. 4 is upset table front structural representation of the present utility model；
Fig. 5 is upset workbench reverse structure schematic of the present utility model；
Fig. 6 is saw blade cutter device structural representation of the present utility model；
Fig. 7 is cutter device structural representation in gantry of the present utility model.
Wherein, 1 workbench may be reversed, 2 gantry cutter devices, 3 saw blade cutter devices, 4 electrical control gears, 5 waste materials are returned
Receiving apparatus, 6 bed pieces, 7 lathe bases, 8 machine tool guideways, 9 racks, 10 workbench, 11 trip shafts, 12 support frames, 13 Y-directions
Guide groove, 14 Z-direction guide grooves, 15 first sliding blocks, 16 alignment pins, 17 first removable carry-over bars, 18 grooved rails, 19 contiguous blocks,
20 first oil cylinders, 21 fixing axles, 22 first gears, 23 pressure strips, 24 second oil cylinders, 25 the 3rd oil cylinders, 26 first supports, 27
Frame grooved rail, 28 second removable carry-over bars, 29 second gears, 30 portal frames, 31 portal frame bases, 32X is to servomotor, 33
3rd gear, 34 gantry top guide rail, 35 gantry top sliding blocks, 36Y is to timing belt, and 37Y is to synchronous pulley, and 38Y is to servomotor, 39
Second support, 40L type flat boards, 41 flat board guide rails, 42 second sliding blocks, 43 cutting guns, 44 Z-direction timing belts, 45Z to synchronous pulley,
46Z is to servomotor, 47 sawing machine bases, 48 conical funnels, 49 servomotors, 50 the 4th gears, 51 saw blade casees, 52 hydraulic pressure
Axle in the middle part of cylinder, 53 bases, 54 base end axles, 55 offset beam axles.
Embodiment：
To be easy to understand technological means of the present utility model, creation characteristic, the purpose reached and effect, tie below
Conjunction is specifically illustrating, and the utility model is expanded on further；Illustrated embodiment is only used for explaining the utility model, is not intended to limit this
The scope of utility model.
Embodiment 1, referring to Fig. 1,2,3,4,5,6,7, needs to be processed into lathe base 7, in lathe base 7 according to design
Rack 9 is installed in upper mounting rail 8, the outside of lathe base 7, and rack 9 is located at the lower section of guide rail 8；Constitute bed piece 6；
Workbench 10 is processed into, workpiece is fixed for clamping, there is circular port at the center of workbench 10, workbench 10 is passed through
Trip shaft 11 is connected with support frame 12；The energy X that Y, Z-direction are adjusted manually is set on workbench 10 to detent mechanism, Y-direction self-centering
Clamp system, Z-direction hold-down mechanism and switching mechanism；
X is to detent mechanism, and for different model workpiece X to positioning, including Y-direction guide groove 13, Y-direction guide groove 13 is fixed and set
Workbench circular port Y-direction side is placed in, Z-direction guide groove 14 is arranged in Y-direction guide groove 13, and the first sliding block 15 is led installed in Z-direction
Into groove 14, alignment pin 16 is fixedly connected with the first sliding block 15, the movement of the Z-direction of alignment pin 16；
Y-direction self-centering clamping mechanism, for Workpiece clamping, and positions workpiece Y-direction, including the first removable carry-over bar 17,
First removable carry-over bar 17 is mounted on the X of workbench 10 into the grooved rail 18 at two ends, first removable one end of carry-over bar 17
It is connected by contiguous block 19 with the first oil cylinder 20, the first removable carry-over bar 17 is consolidated with being mounted on the middle part reverse side of grooved rail 18
First gear 22 on dead axle 21 is engaged, and distribution in a center of symmetry；
Z-direction hold-down mechanism, is compressed for workpiece Z-direction, including pressure strip 23, and pressure strip 23 is arranged on the piston of the second oil cylinder 24
On bar, piston rod straight up, and can 90 ° of rotations, second oil cylinder 24 is arranged on by grooved rail 18, and in a center of symmetry
Distribution；
Switching mechanism, for described 10 two-way 180 ° of upsets of workbench, including the 3rd oil cylinder 25, the 3rd oil cylinder 25 is arranged on
In the side first support 26 of workbench 10, first support 26 is fixed with bed piece 6, and provided with rack groove guide rail 27, second
Removable carry-over bar 28 is arranged in rack groove guide rail 27, and is connected with the 3rd oil cylinder 25；Second gear 29 is fixed on trip shaft
On 11, and engaged with the second removable carry-over bar 28；
Workbench 1 may be reversed in above-mentioned part composition；
Portal frame 30 is processed into, on the machine tool guideway 8 that portal frame 30 is arranged on to bed piece 6,30 times peaces of portal frame
Fill on portal frame base 31, portal frame base 31 equipped with X to servomotor 32, X drives the 3rd gear 33 to servomotor 32, the
Three gears 33 are engaged with the rack 9 on bed piece 6；Gantry is set to push up guide rail 34 at the top of portal frame 30, gantry top is slided
Block 35 is arranged on the guide rail 34 of gantry top, and gantry top sliding block 35 is fixedly mounted with Y-direction timing belt 36, and Y-direction timing belt 36 is watched by Y-direction
Take the Y-direction timing belt wheel 37 that motor 38 driven to drive, Y-direction servomotor 38 is mounted on the of gantry top one end of guide rail 34
On two supports 39；L-type flat board 40 is fixedly mounted with gantry top sliding block 35, and L-type flat board 40Z is to equipped with flat board guide rail 41,
Second sliding block 42 is arranged on flat board guide rail 41, and cutting gun 43 is arranged on the second sliding block 42, the second sliding block 42 and Z-direction timing belt
44 are fixedly mounted, and the Z-direction timing belt wheel 45 that timing belt 44 is driven by Z-direction servomotor 46 is driven, and Z-direction servomotor 46 is arranged on
The X of L-type flat board 40 is on flat board；Constitute gantry cutter device 2；
Being processed on sawing machine base 47, sawing machine base 47 has conical funnel 48, facilitates cutting fluid to reclaim, by sawing machine bottom
Seat 47 is arranged on the machine tool guideway 8 of bed piece 6, and sawing machine base 47 is equipped with servomotor 49, the driving of servomotor 49 the 4th
Gear 50, the 4th gear 50 is engaged with the rack 9 on bed piece 6；Saw blade case 51 and liquid are housed on saw blade base 47
Cylinder pressure 52, hydraulic cylinder 52 is connected with axle 53 in the middle part of base, and the one end of saw blade case 51 is connected with base end axle 54, the piston of hydraulic cylinder 52
Bar is connected with the offset beam axle 55 of saw blade case 51, drives saw blade case 51 to move up and down by the driving of hydraulic cylinder 52；Composition saw blade is cut
Cut device 3；
Installed in the X of bed piece 6 to processing axis side and workbench 1 may be reversed, the right side of workbench 1 may be reversed dragon is installed
Door cutter device 2 and saw blade cutter device 3, the benefit of looking into that gantry cutter device 2 can carry out XYZ axles are moved, and gantry cutter device 2 is
Gas flame cuttiug or plasma cut；Saw blade cutter device 3 it is overall in bed piece 6X to carrying out positioning movement, saw blade cutter device
Cutting movement above and below 3 progress of saw blade case 51；Waste material recovery device 5, waste material recovery device are set in the groove of bed piece 6
5 are located at immediately below turnable workbench 1；Electrical control gear 4 is fixedly installed in the Y-direction side of bed piece 6, finally will be electric
Control device 4 is connected by circuit with electric component.
A kind of Numerical control cutting building-block machine described in the utility model, its course of work：Clamping workpiece is in upset workbench
Front, gantry cutter device and saw blade cutter device are controlled, along X to Working position is moved to, to complete from electrical control gear（Fire
Flame or plasma）After cutting and saw blade cutting processing, initial position is returned to, the work of the 1st station is completed.Electrical control gear is controlled
Workbench is overturn by 180 ° of workpiece turning, gantry（Flame or plasma）Cutter device and saw blade cutter device are again by electric-controlled
Device control processed is completed after workpiece another side gas flame cuttiug and saw blade cutting processing along X to Working position is moved to, and is returned to initial
Position, the 2nd station work is completed；Workbench is overturn to reset.So far all work is completed the utility model.
General principle of the present utility model, principal character and advantage of the present utility model, one's own profession has been shown and described above
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the utility model spirit and scope is not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed the utility model, the utility model
Claimed scope has appended claims and its equivalent thereof.
Claims (7)
1. a kind of Numerical control cutting building-block machine, including bed piece（6）, it is characterised in that described bed piece（6）X is to adding
Work axis side sets turnable workbench（1）, workbench may be reversed（1）Right side sets gantry cutter device（2）Cut and fill with saw blade
Put（3）, in bed piece（6）Groove in set waste material recovery device（5）, waste material recovery device（5）Positioned at turnable workbench
（1）Underface；Bed piece（6）Electrical control gear is fixedly installed in Y-direction side（4）, electrical control gear（4）By circuit with
Electric component is connected.
2. a kind of Numerical control cutting building-block machine according to claim 1, it is characterised in that described gantry cutter device
（2）The moving interpolation of XYZ axles can be carried out；Gantry cutter device（2）For gas flame cuttiug or plasma cut.
3. a kind of Numerical control cutting building-block machine according to claim 1, it is characterised in that the saw blade cutter device（3）
Entirety is in bed piece（6）X to carry out positioning movement, saw blade cutter device（3）Saw blade case（51）Cutting movement above and below progress.
4. a kind of Numerical control cutting building-block machine according to claim 1, it is characterised in that described bed piece（6）Bag
Include lathe base（7）, lathe base（7）On set machine tool guideway（8）, lathe base（7）Outside sets rack（9）, rack（9）It is located at
Machine tool guideway（8）Lower section.
5. a kind of Numerical control cutting building-block machine according to claim 1, it is characterised in that described turnable workbench
（1）Including workbench（10）, workbench（10）There are circular port, workbench in center（10）Pass through trip shaft（11）With support frame（12）
Connection；Workbench（10）The energy X that Y, Z-direction are adjusted manually is provided with to detent mechanism, Y-direction self-centering clamping mechanism, Z-direction compacting machine
Structure and switching mechanism；
X is to detent mechanism, including Y-direction guide groove（13）, Y-direction guide groove（13）Workbench circular port Y-direction side is fixedly installed on,
Z-direction guide groove（14）Installed in Y-direction guide groove（13）It is interior, the first sliding block（15）Installed in Z-direction guide groove（14）It is interior, alignment pin
（16）With the first sliding block（15）It is fixedly connected, alignment pin（16）Z-direction is moved；
Y-direction self-centering clamping mechanism, including the first removable carry-over bar（17）, the first removable carry-over bar（17）It is mounted on work
Platform（10）Grooved rail from X to two ends（18）It is interior, the first removable carry-over bar（17）One end passes through contiguous block（19）With the first oil cylinder
（20）Connection, the first removable carry-over bar（17）With being mounted on grooved rail（18）Middle part reverse side fixing axle（21）On first
Gear（22）Engagement, and distribution in a center of symmetry；
Z-direction hold-down mechanism, including pressure strip（23）, pressure strip（23）Installed in the second oil cylinder（24）On piston rod, piston rod is erected
It is straight upward, and can 90 ° of rotations, second oil cylinder（24）Installed in grooved rail（18）Side, and distribution in a center of symmetry；
Switching mechanism, including the 3rd oil cylinder（25）, the 3rd oil cylinder（25）It is arranged on workbench（10）Side first support（26）On,
First support（26）With bed piece（6）It is fixed, and provided with rack groove guide rail（27）, the second removable carry-over bar（28）It is arranged on
Rack groove guide rail（27）It is interior, and with the 3rd oil cylinder（25）Connection；Second gear（29）It is fixed on trip shaft（11）On, and with
Two removable carry-over bars（28）Engagement.
6. a kind of Numerical control cutting building-block machine according to claim 1, it is characterised in that described gantry cutter device
（2）, including portal frame（30）, portal frame（30）Installed in bed piece（6）Machine tool guideway（8）On, portal frame（30）Divide into
Portal frame base（31）, portal frame base（31）The upper X that is equipped with is to servomotor（32）, X is to servomotor（32）Drive the 3rd tooth
Wheel（33）, the 3rd gear（33）With mounted in bed piece（6）On rack（9）Engagement；
Portal frame（30）Top sets gantry top guide rail（34）, gantry top sliding block（35）Guide rail is pushed up installed in gantry（34）On, gantry
Top sliding block（35）With Y-direction timing belt（36）It is fixedly mounted, Y-direction timing belt（36）By Y-direction servomotor（38）The Y-direction driven is same
Walk belt wheel（37）Driving, Y-direction servomotor（38）It is mounted on gantry top guide rail（34）The second support of one end（39）On；
L-type flat board（40）With gantry top sliding block（35）It is fixedly mounted, and L-type flat board（40）Z-direction is equipped with flat board guide rail（41）, the
Two sliding blocks（42）Installed in flat board guide rail（41）On, cutting gun（43）Installed in the second sliding block（42）On, the second sliding block（42）With Z
To timing belt（44）It is fixedly mounted, timing belt（44）By Z-direction servomotor（46）The Z-direction timing belt wheel of driving（45）Driving, Z-direction
Servomotor（46）Installed in L-type flat board（40）X is on flat board.
7. a kind of Numerical control cutting building-block machine according to claim 1, it is characterised in that described saw blade cutter device
（3）, including sawing machine base（47）, sawing machine base（47）On have conical funnel（48）, sawing machine base（47）Installed in machine tool
Body（6）Machine tool guideway（8）On, sawing machine base（47）Equipped with servomotor（49), servomotor（49) the 4th gear is driven
（50）, the 4th gear（50）With mounted in bed piece（6）On rack（9）Engagement；
Saw blade base（47）It is upper that saw blade case is housed（51）And hydraulic cylinder（52）, hydraulic cylinder（52）With axle in the middle part of base（53）Connection,
Saw blade case（51）One end and base end axle（54）Connection, hydraulic cylinder（52）Piston rod and saw blade case（51）Offset beam axle（55）
Connection, passes through hydraulic cylinder（52）Driving drives saw blade case（51）Move up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720165331.XU CN206605238U (en) | 2017-02-23 | 2017-02-23 | A kind of Numerical control cutting building-block machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720165331.XU CN206605238U (en) | 2017-02-23 | 2017-02-23 | A kind of Numerical control cutting building-block machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206605238U true CN206605238U (en) | 2017-11-03 |
Family
ID=60169600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720165331.XU Expired - Fee Related CN206605238U (en) | 2017-02-23 | 2017-02-23 | A kind of Numerical control cutting building-block machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206605238U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106736596A (en) * | 2017-02-23 | 2017-05-31 | 山东蓬翔汽车有限公司 | A kind of Numerical control cutting building-block machine |
| CN108356773A (en) * | 2017-12-29 | 2018-08-03 | 天长缸盖有限公司 | A kind of multi-faceted synchronous processing device of high efficiency |
| CN108356581A (en) * | 2017-12-29 | 2018-08-03 | 天长缸盖有限公司 | A kind of workpiece two-sided processing double-open type workbench |
-
2017
- 2017-02-23 CN CN201720165331.XU patent/CN206605238U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106736596A (en) * | 2017-02-23 | 2017-05-31 | 山东蓬翔汽车有限公司 | A kind of Numerical control cutting building-block machine |
| CN108356773A (en) * | 2017-12-29 | 2018-08-03 | 天长缸盖有限公司 | A kind of multi-faceted synchronous processing device of high efficiency |
| CN108356581A (en) * | 2017-12-29 | 2018-08-03 | 天长缸盖有限公司 | A kind of workpiece two-sided processing double-open type workbench |
| CN108356773B (en) * | 2017-12-29 | 2020-10-27 | 天长缸盖有限公司 | High-efficiency multi-azimuth synchronous processing device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171103 Termination date: 20190223 |