CN111300077A - High-precision numerical control machining center is with dustproof sliding guide of two-sided apron formula - Google Patents
High-precision numerical control machining center is with dustproof sliding guide of two-sided apron formula Download PDFInfo
- Publication number
- CN111300077A CN111300077A CN202010180948.5A CN202010180948A CN111300077A CN 111300077 A CN111300077 A CN 111300077A CN 202010180948 A CN202010180948 A CN 202010180948A CN 111300077 A CN111300077 A CN 111300077A
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- clamping block
- rail
- numerical control
- machining center
- guide rail
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- 230000001681 protective effect Effects 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 230000009471 action Effects 0.000 claims abstract description 6
- 230000003139 buffering effect Effects 0.000 claims abstract description 4
- 230000017525 heat dissipation Effects 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 9
- 230000006872 improvement Effects 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 8
- 239000002699 waste material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- 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
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
- B23Q1/017—Arrangements of ways
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/08—Protective coverings for parts of machine tools; Splash guards
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
The invention provides a double-sided cover plate type dustproof sliding guide rail for a high-precision numerical control machining center, which comprises a rail body, a sliding seat and a protective cover, wherein the sliding seat is arranged on the rail body; the left end and the right end of the rail body are respectively provided with a left baffle body and a right baffle body, and the tops of the inner end surfaces of the left baffle body and the right baffle body are respectively provided with two rubber baffle blocks with buffering and limiting characteristics; the sliding seat is matched on the rail body in a left-right sliding mode, and a first clamping block and a second clamping block are respectively arranged on the left side and the right side of the top surface of the sliding seat in a bolt fixing mode; the protective cover is of a U-shaped plate structure and is arranged on the top surfaces of the left retaining body and the right retaining body together in a mode that turning sections on the left side and the right side of the bottom are matched with bolts for fixing; and because the side fender cover that the lateral part was installed all can upwards or the action of rotation downwards, therefore the daily clearance of lathe guide rail of being convenient for again, the flexibility has obtained the improvement, in order to make the external mechanism who installs on the slide can normally round trip movement, therefore the top keeps off and still has seted up the channel in the middle of the cover, has improved structural rationality.
Description
Technical Field
The invention belongs to the technical field of machine tool slide rails, and particularly relates to a double-sided cover plate type dustproof slide rail for a high-precision numerical control machining center.
Background
The parts that support and guide the movement of the moving member along a certain trajectory are called guide rail pairs, also often simply called guide rails. The motion trail of the motion part is linear, circular or curved, the rolling circular guide rail can return to a rolling thrust bearing, and the curved guide rail is rarely applied to machinery. Guide rails are a very important component in machines, especially in machine tools.
Chinese patent application No. CN201920043227.2 discloses digit control machine tool slide rail with adjustable, including the lathe operation panel, both ends all are equipped with protruding slat about the lathe operation panel, are equipped with the slotted hole on the protruding slat, are equipped with the recess under the slotted hole, and the equidistance is equipped with a plurality of screws in the recess, is equipped with the guide rail between two protruding slats, and the bottom of guide rail is equipped with the cushion, all is equipped with the limiting plate of buckling on the left and right sides face of cushion, is equipped with the fixed orifices on the limiting plate of buckling, is equipped with the bolt in the fixed orifices. According to the invention, the slotted holes are formed in the two sides of the machine tool operating table, the cushion blocks are arranged at the bottom ends of the guide rails, the bending limiting plates are arranged at the two ends of the cushion blocks, the positions of the guide rails are adjusted by moving the cushion blocks, the abrasion of machinery is reduced by fixing the cushion blocks through bolts, the production time is reduced, the service life of the machinery is prolonged, and the production efficiency of the machine tool is improved.
Based on the above, the inventor finds that the machine tool slide rail provided by the above patent has the characteristics of reducing abrasion and prolonging the service life, but is mostly exposed outside when in use, and lubricating oil is required to be regularly coated on the rail when in use, so that external dust and granular waste generated in the processing process are adhered to the rail due to oil when in use, the surfaces of the slide base on the rail are scratched when the slide base slides back and forth, and a linear speed motor at one end generates large heat and is not easy to volatilize and cool when in work.
Disclosure of Invention
In order to solve the technical problems, the invention provides a double-sided cover plate type dustproof sliding guide rail for a high-precision numerical control machining center, which aims to solve the problems that when an existing numerical control machine tool slide rail is used, lubricating oil needs to be regularly coated on the rail, external dust and granular waste materials generated in the machining process are adhered to the rail due to oil when the existing numerical control machine tool slide rail is used, the surfaces of a slide seat on the rail are scratched when the slide seat slides back and forth, and a linear speed motor located at one end of the rail generates large heat and is not easy to volatilize and cool when the linear speed motor works.
The invention relates to a double-sided cover plate type dustproof sliding guide rail for a high-precision numerical control machining center, which is achieved by the following specific technical means:
a double-sided cover plate type dustproof sliding guide rail for a high-precision numerical control machining center comprises a rail body, a sliding seat and a protective cover; the left end and the right end of the rail body are respectively provided with a left baffle body and a right baffle body, and the tops of the inner end surfaces of the left baffle body and the right baffle body are respectively provided with two rubber baffle blocks with buffering and limiting characteristics; the sliding seat is matched on the rail body in a left-right sliding mode, and a first clamping block and a second clamping block are respectively arranged on the left side and the right side of the top surface of the sliding seat in a bolt fixing mode; the protective cover is of a U-shaped plate structure and is arranged on the top surfaces of the left retaining body and the right retaining body together in a mode that turning sections on the left side and the right side of the bottom are matched with bolts for fixing; the protection cover is characterized in that a fixed seat is welded on the left side and the right side of the top surface of the protection cover, the inner ends of the two fixed seats are respectively connected with a left retaining section and a right retaining section which can move in a telescopic mode, U-shaped notches are formed in the front end face and the rear end face of the protection cover, the rotating shafts are arranged in the front and the rear directions, and the rotating shafts are respectively arranged on the U-shaped notches formed in the front end face and the rear end face of the.
Further: the inner ends of the left gear section and the right gear section are both connected with a connecting plate; the two connecting plates are also provided with fixing holes.
Further: and the rotating shafts are also provided with side shield covers which can be opened by rotating downwards, and the shield covers on the two sides and the protective covers form a shield cover mechanism positioned on the top side of the rail body.
Further: a limiting plate is welded to two sides of the bottom surface of the protective cover, and a magnet block is welded to one end of each of the two limiting plates.
Further: and the front end surface and the rear end surface of the rail body are respectively provided with a heat dissipation plate, and the two heat dissipation plates are also connected to the inner end surfaces of the left baffle body and the right baffle body.
Further: the first clamping block and the second clamping block on the top surface of the sliding seat are both provided with a locking groove, and the first clamping block and the second clamping block are matched with a locking bolt with locking action through the provided locking hole.
Further: the middle position of the protective cover is provided with a channel in a rectangular notch pattern, and the left gear section and the right gear section are located at the top of the channel
Further: the lock groove is of a U-shaped notch structure, the first clamping block and the second clamping block form a clamping cavity through the lock groove between the first clamping block and the second clamping block, and the clamping cavities of the first clamping block and the second clamping block are located at the bottom side of a channel formed in the middle of the protective cover.
Compared with the prior art, the invention has the following beneficial effects:
first, a front heat dissipation plate and a rear heat dissipation plate are connected between the blocking body on the right side and the blocking body on the left side of the guide rail, and the two heat dissipation plates are attached to the front end face and the rear end face of the rail body at the same time, so that heat generated by a sliding seat which frequently moves back and forth on the slide rail and heat generated by the slide rail due to the slide rail can be dissipated outwards through the two heat dissipation plates, and the right blocking body is provided with a linear speed servo motor, so that heat generated during working can be dissipated outwards.
Secondly, the slide rail top of this structure has still fallen the fender cover of a slice U-shaped structure of dress, the fender dust structure of top side has been constituted, and keep off the mode that the cover both sides all still installed the side through the axle and keep off the cover at the top again, consequently, the fender dust structure at preceding back position constitutes, make the waste material that the digit control machine tool during operation produced difficult on invading the guide rail, and because the side that the lateral part was installed keeps off the cover and all can upwards or the downward rotation action, therefore be convenient for the daily clearance of lathe guide rail again, the flexibility has obtained the improvement, in order to make the external mechanism of installing on the slide can normally round trip movement, consequently, the channel has still been seted up in the middle of the top fender cover, structural rationality.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the invention from a rotated perspective as drawn from fig. 1.
FIG. 3 is an enlarged view of the part B of the present invention.
FIG. 4 is a schematic view of the present invention with the shields removed and only the rail body left.
FIG. 5 is an enlarged view of part A of the present invention.
Fig. 6 is a schematic view of the invention from a rotated perspective as shown in fig. 4.
FIG. 7 is a schematic view of the top shield of the present invention after it has been raised upwardly.
FIG. 8 is a bottom schematic bottom view of the top shield assembly of the present invention shown in broken away.
Fig. 9 is a schematic structural view of the right gear segment of the present invention after being moved upward and the position of the channel is opened.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. a rail body; 2. a left baffle; 3. a right baffle; 4. a slide base; 5. a first clamping block; 6. a second clamp block; 7. a lock hole; 8. locking the groove; 9. a protective cover; 10. a rotating shaft; 11. a side shield cover; 12. a limiting plate; 13. a magnet block; 14. a fixed seat; 15. a left gear section; 16. a right gear section; 17. a channel; 18. a connecting plate; 19. a fixing hole; 20. a rubber stopper; 21. a heat dissipation plate; 22. and locking the bolt.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in figures 1 to 9:
the invention provides a double-sided cover plate type dustproof sliding guide rail for a high-precision numerical control machining center, which comprises a rail body 1, a sliding seat 4 and a protective cover 9; the left end and the right end of the rail body 1 are respectively provided with a left baffle body 2 and a right baffle body 3, and the tops of the inner end surfaces of the left baffle body 2 and the right baffle body 3 are respectively provided with two rubber stop blocks 20 with buffering and limiting characteristics; the slide seat 4 is matched on the rail body 1 in a left-right sliding mode, and the left side and the right side of the top surface of the slide seat 4 are respectively provided with a first clamping block 5 and a second clamping block 6 in a bolt fixing mode; the protective cover 9 is of a U-shaped plate structure and is arranged on the top surfaces of the left retaining body 2 and the right retaining body 3 together in a mode that turning sections on the left side and the right side of the bottom are matched with bolts for fixing; the left side and the right side of the top surface of the protective cover 9 are both welded with a fixed seat 14, the inner ends of the two fixed seats 14 are respectively connected with a left retaining section 15 and a right retaining section 16 which can move in a telescopic mode, the front end face and the rear end face of the protective cover 9 are both provided with U-shaped notches, the front rotating shaft 10 and the rear rotating shaft 10 are respectively arranged on the U-shaped notches formed in the front end face and the rear end face of the protective cover 9.
Wherein: as shown in fig. 2, 3 and 9, a connecting plate 18 is further connected to the inner ends of the left gear segment 15 and the right gear segment 16; and all seted up fixed orifices 19 on two connecting plates 18, consequently can see that, when this guide rail mechanism installed and uses on the digit control machine tool, can be connected left fender section 15 and right fender section 16 on external mechanism through the connecting plate 18 of inner end through the mode that penetrates the bolt by fixed orifices 19 with them, left fender section 15 and right fender section 16 are along with its synchronous displacement when external mechanism round trip movement.
Wherein: as shown in fig. 1, 2, 7 and 8, the side shield 11 which can be opened by rotating downwards is mounted on the rotating shaft 10, and the side shield 11 and the protection cover 9 form a shield mechanism which is positioned at the top side of the rail body 1, so that it can be seen that, not only the top area of the rail body 1 is protected from dust by the protection cover 9, but also utilizes the two side shield covers 11 which can rotate to shield dust on the two sides of the rail body 1, and the two side shield covers 11 can rotate to act, and in order to further improve the structural rationality, as shown in fig. 7, a limiting plate 12 is welded on both sides of the bottom surface of the protective cover 9, and one end of each of the two limit plates 12 is welded with a magnet block 13 for adsorbing and fixing the two side shield covers 11 in a vertical state, therefore, after the two side blocking covers 11 rotate upwards, the rail body 1 can be maintained again regularly, and the flexibility and the practicability are improved.
Wherein: the front and rear end surfaces of the rail body 1 are both provided with a heat dissipation plate 21, the two heat dissipation plates 21 are also connected to the inner end surfaces of the left baffle body 2 and the right baffle body 3, heat generated by frequent back and forth movement of the sliding seat 4 on the rail body 1 can be dissipated outwards through the two heat dissipation plates 21, and heat generated during operation can also be dissipated outwards because the right baffle body 3 is provided with a linear speed servo motor which is the prior art of synchronous rail power in the drawing and is not described here.
Wherein: as shown in fig. 4, 5 and 6, the first clamping block 5 and the second clamping block 6 on the top surface of the sliding seat 4 are both provided with a locking groove 8, and are also matched with a locking bolt 22 for locking action through a locking hole 7, the locking grooves 8 are both in a U-shaped notch structure, the first clamping block 5 and the second clamping block 6 form a clamping cavity through the locking groove 8 between the first clamping block and the second clamping block, the clamping cavity of the first clamping block and the clamping cavity of the second clamping block are positioned at the bottom side of a channel 17 formed in the middle of the protective cover 9, the first clamping block 5 and the second clamping block 6 of the structure form a clamping cavity mechanism for assembling and connecting an external matching mechanism, and when the external mechanism is installed on the sliding seat 4, the external mechanism is fixed by adopting a locking mode of the locking bolt 22.
Wherein: in order to improve the structural rationality, a channel 17 in a rectangular notch pattern is formed in the middle of the protective cover 9, the left retaining section 15 and the right retaining section 16 are located at the top of the channel 17, and therefore when the rail body 1 is connected with other external equipment mechanisms, other mechanisms move to the channel 17 when moving back and forth.
The specific use mode and function of the embodiment are as follows:
when the rail body 1 of the structure is used, the rail body 1 is placed on a numerical control device, in the using process, the top of the rail body 1 is provided with the protective cover 9, and the two sides of the protective cover 9 are respectively provided with the side retaining covers 11 in a mode of penetrating through the rotating shaft 10, so that the rail body 1 of the structure has an omnibearing dust blocking effect, the sliding seat 4 which slides back and forth on the rail body 1 cannot generate friction scratch due to splashing waste impurities adhered by oil stains on the surface of the sliding seat 4 in the moving process, the functional structure is improved, in addition, as the sliding seat 4 of the device is provided with the first clamping block 5 and the second clamping block 6, the middle position of the protective cover 9 corresponding to the two clamping blocks is provided with the channel 17, the sliding seat 4 can be connected with a connecting mechanism on an external device by utilizing the first clamping block 5 and the second clamping block 6, and extends outwards from the top channel 17, and has dust blocking effect on the channel 17 when being connected to an external mechanism for use through the top left and right blocking sections 15 and 16.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (8)
1. A double-faced cover plate type dustproof sliding guide rail for a high-precision numerical control machining center comprises a rail body (1), a sliding seat (4) and a protective cover (9); the left end and the right end of the rail body (1) are respectively provided with a left baffle body (2) and a right baffle body (3), and the tops of the inner end surfaces of the left baffle body (2) and the right baffle body (3) are respectively provided with two rubber stop blocks (20) with buffering and limiting characteristics; the sliding seat (4) is matched on the rail body (1) in a left-right sliding mode, and the left side and the right side of the top surface of the sliding seat (4) are respectively provided with a first clamping block (5) and a second clamping block (6) in a bolt fixing mode; the protective cover (9) is of a U-shaped plate structure and is arranged on the top surfaces of the left blocking body (2) and the right blocking body (3) together in a mode that turning sections on the left side and the right side of the bottom are matched with bolts for fixing; the utility model discloses a protection casing, including protection casing (9), the top surface left and right sides of protection casing (9) all still weld a slice fixing base (14), and the inner end of two fixing bases (14) still is connected with a slice scalable action left side fender section (15) and right side fender section (16) respectively, the notch of U-shaped has all still been seted up to the terminal surface around protection casing (9), rotation axis (10) are two around, and they are installed respectively on the U-shaped notch that both ends face was seted up around protection casing (9).
2. The double-faced cover plate type dustproof sliding guide rail for the high-precision numerical control machining center as claimed in claim 1, is characterized in that: the inner ends of the left gear section (15) and the right gear section (16) are connected with a connecting plate (18); the two connecting plates (18) are also provided with fixing holes (19).
3. The double-faced cover plate type dustproof sliding guide rail for the high-precision numerical control machining center as claimed in claim 1, is characterized in that: and the rotating shaft (10) is also provided with side shield covers (11) which can be opened in a downward rotating manner, and the shield covers (11) at the two sides and the protective cover (9) form a shield cover mechanism positioned at the top side of the rail body (1).
4. The double-faced cover plate type dustproof sliding guide rail for the high-precision numerical control machining center as claimed in claim 1, is characterized in that: a limiting plate (12) is welded to each of the two sides of the bottom face of the protective cover (9), and a magnet block (13) is welded to one end of each of the two limiting plates (12).
5. The double-faced cover plate type dustproof sliding guide rail for the high-precision numerical control machining center as claimed in claim 1, is characterized in that: and the front end surface and the rear end surface of the rail body (1) are respectively provided with a heat dissipation plate (21), and the two heat dissipation plates (21) are also connected to the inner end surfaces of the left baffle body (2) and the right baffle body (3).
6. The double-faced cover plate type dustproof sliding guide rail for the high-precision numerical control machining center as claimed in claim 1, is characterized in that: the first clamping block (5) and the second clamping block (6) on the top surface of the sliding seat (4) are both provided with a locking groove (8), and the first clamping block and the second clamping block are matched with a locking bolt (22) of locking action through a locking hole (7).
7. The double-faced cover plate type dustproof sliding guide rail for the high-precision numerical control machining center as claimed in claim 1, is characterized in that: the middle position of protection casing (9) is seted up the channel (17) of a rectangle notch pattern, keeps off section (15) and right fender section (16) and just is located the top of channel (17).
8. The high-precision numerical control machining center double-face cover plate type dustproof sliding guide rail as claimed in claim 6, is characterized in that: the locking groove (8) is of a U-shaped notch structure, the first clamping block (5) and the second clamping block (6) form a clamping cavity through the locking groove (8) between the first clamping block and the second clamping block, and the clamping cavities of the first clamping block and the second clamping block are located on the bottom side of a channel (17) formed in the middle of the protective cover (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010180948.5A CN111300077A (en) | 2020-03-16 | 2020-03-16 | High-precision numerical control machining center is with dustproof sliding guide of two-sided apron formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010180948.5A CN111300077A (en) | 2020-03-16 | 2020-03-16 | High-precision numerical control machining center is with dustproof sliding guide of two-sided apron formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111300077A true CN111300077A (en) | 2020-06-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010180948.5A Withdrawn CN111300077A (en) | 2020-03-16 | 2020-03-16 | High-precision numerical control machining center is with dustproof sliding guide of two-sided apron formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111300077A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112222968A (en) * | 2020-10-20 | 2021-01-15 | 宁波高研精密机械有限公司 | Centerless grinding machine of high accuracy translation |
-
2020
- 2020-03-16 CN CN202010180948.5A patent/CN111300077A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112222968A (en) * | 2020-10-20 | 2021-01-15 | 宁波高研精密机械有限公司 | Centerless grinding machine of high accuracy translation |
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Application publication date: 20200619 |