CN220216849U - Rough and fine integrated milling head - Google Patents
Rough and fine integrated milling head Download PDFInfo
- Publication number
- CN220216849U CN220216849U CN202321666729.3U CN202321666729U CN220216849U CN 220216849 U CN220216849 U CN 220216849U CN 202321666729 U CN202321666729 U CN 202321666729U CN 220216849 U CN220216849 U CN 220216849U
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- cutter
- cutter disc
- sliding sleeve
- rough
- disc
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- 238000003801 milling Methods 0.000 title claims abstract description 76
- 238000007789 sealing Methods 0.000 claims description 64
- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000000034 method Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The milling head comprises a connecting taper shank, an outer cutter disc and an inner cutter disc, wherein the diameter of the outer cutter disc is larger than that of the inner cutter disc, the outer cutter disc is positioned at the periphery of the inner cutter disc, and the axes of the outer cutter disc and the inner cutter disc are overlapped; the inner cutter head is fixed at the lower end of the connecting taper shank, and the outer cutter head can move up and down relative to the inner cutter head. The principle of the utility model is as follows: when the milling cutter is used for rough milling, the outer cutter disc moves upwards, the rough milling blade on the inner cutter disc is lower than the finish milling blade on the outer cutter disc, the inner cutter disc is a working cutter disc, and the position of the inner cutter disc is not influenced by the supporting force of rough milling because the inner cutter disc is directly and fixedly connected with the connecting taper shank; when the outer cutter disc is used for finish milling, the outer cutter disc moves downwards, the finish milling cutter blade on the outer cutter disc is lower than the rough milling cutter blade on the inner cutter disc, and the outer cutter disc is used as a working cutter disc.
Description
Technical Field
The utility model relates to the field of metal chip processing, in particular to a rough and fine integrated milling head.
Background
Aiming at plane milling, finish milling is carried out after rough milling, a milling head integrating rough milling and finish milling exists in the prior art, such as a combined face milling cutter with adjustable finish milling depth and disclosed in China patent publication No. CN107442829A, and the combined face milling cutter comprises an outer cutter disc, an inner cutter disc and a sealing disc, wherein the outer cutter disc is rotationally connected with the sealing disc, and a plurality of rough milling blades are fixedly connected with the disc surface at the upper end of the outer cutter disc; the inner cutter disc is connected in a sliding fit manner in the outer cutter disc, a plurality of fixing grooves are further formed in the inner disc wall of the outer cutter disc, a plurality of fixing blocks are fixedly connected to the lower end face of the side wall of the inner cutter disc, and a plurality of finish milling blades are fixedly connected to the upper end face of the inner cutter disc; the center of the sealing disc is provided with a groove, the sealing bearing is internally connected with a mounting shaft sleeve in an interference manner, the mounting shaft sleeve stretches into the outer cutter disc and is fixedly connected with a transmission plate, the outer wall of the transmission plate is fixedly connected with the inner wall of the outer cutter disc, a plurality of oil holes are further formed in the transmission plate, and a hydraulic joint is further communicated with the disc surface of the sealing disc. The inner cutter head changes the processing mode by moving oil up and down, and the rough milling cutter is arranged on the inner cutter head, so that the inner cutter head can float due to the large pressure applied to the inner cutter head during the processing of the rough milling cutter, and the processing precision is affected; in addition, the outer cutter head is rotationally connected with the sealing disc, the disc surface of the sealing disc is also communicated with a hydraulic joint, and the sealing disc is equivalent to a rotary joint, so that the sealing difficulty is increased; secondly, the mounting shaft sleeve drives the outer cutter head through the transmission plate, the transmission plate is provided with an oil through hole, and the structural strength of the transmission plate cannot be ensured; finally, after hydraulic oil enters the inner cutterhead from the oil through hole of the transmission plate to move downwards, the inner cutterhead cannot realize the reset action due to the lack of a reset mechanism of the inner cutterhead.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide a rough and fine integrated milling head, and the stability of the inner cutter head is higher when the inner cutter head is used for rough milling.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the milling head comprises a connecting taper shank, an outer cutter disc and an inner cutter disc, wherein the diameter of the outer cutter disc is larger than that of the inner cutter disc, the outer cutter disc is positioned at the periphery of the inner cutter disc, and the axes of the outer cutter disc and the inner cutter disc are overlapped; the inner cutter head is fixed at the lower end of the connecting taper shank, and the outer cutter head can move up and down relative to the inner cutter head. The principle of the utility model is as follows: when the milling cutter is used for rough milling, the outer cutter disc moves upwards, the rough milling blade on the inner cutter disc is lower than the finish milling blade on the outer cutter disc, the inner cutter disc is a working cutter disc, and the position of the inner cutter disc is not influenced by the supporting force of rough milling because the inner cutter disc is directly and fixedly connected with the connecting taper shank; when the outer cutter disc is used for finish milling, the outer cutter disc moves downwards, the finish milling cutter blade on the outer cutter disc is lower than the rough milling cutter blade on the inner cutter disc, and the outer cutter disc is used as a working cutter disc.
As an improvement, the outer cutter head includes the sliding sleeve and establishes the cutter mount pad at the sliding sleeve outer wall, the inner wall of sliding sleeve is equipped with the flange ring, connect the taper shank including the taper shank with establish the annular slab at the taper shank outer wall, the annular slab sets up the sliding sleeve and is located the top of flange ring, the lower extreme of taper shank inserts in the through-hole that the flange ring formed, form sealed pressure chamber between annular slab and the flange ring, be equipped with the passageway with the pressure chamber intercommunication in the connection taper shank, the below of flange ring is equipped with the reset spring that drives the sliding sleeve and upwards reset, the sliding sleeve links with the inner cutter head.
As an improvement, an upper groove is formed above the flange ring in the sliding sleeve, a lower groove is formed below the flange ring in the sliding sleeve, the annular plate is arranged in the upper groove, and the inner cutter head extends into the lower groove and is connected with the lower end of the taper shank.
As an improvement, a connecting seat is arranged in the lower groove and fixed at the lower end of the taper shank through a bolt, and the inner cutter head is fixed on the connecting seat through a bolt.
As an improvement, the reset spring is arranged between the connecting seat and the flange ring, a transmission part is arranged between the connecting seat and the flange ring, and the sliding sleeve is linked with the inner cutter head through the transmission part.
As an improvement, the top surface of connecting seat is equipped with the first mounting hole that is used for installing reset spring and is used for installing the second mounting hole of drive unit, the bottom surface of flange ring is equipped with the third mounting hole, drive unit is the driving pin, the lower extreme of driving pin is established in the second mounting hole, the upper end of driving pin is established in the third mounting hole.
As an improvement, a first inclined plane is arranged on the upper portion of the outer wall of the connecting seat, and a second inclined plane matched with the first inclined plane is arranged on the inner wall of the sliding sleeve.
As an improvement, be equipped with first seal groove between the outer wall of annular plate and the inner wall of slip cap, be equipped with first sealing washer in the first seal groove, be equipped with the second seal groove between the outer wall of taper shank and the inner wall of flange ring, be equipped with the second sealing washer in the second seal groove.
As an improvement, the width of the first sealing groove is larger than the diameter of the first sealing ring, and the width of the second sealing groove is larger than the diameter of the second sealing ring; when the sliding sleeve is located at the lower limit position, the first sealing ring is located at the bottom of the first sealing ring, the second sealing ring is located at the top of the second sealing groove, and when the sliding sleeve is located at the upper limit position, the first sealing ring is located at the top of the first sealing ring, and the second sealing ring is located at the lower part of the second sealing groove.
As an improvement, the outer wall of the sliding sleeve is provided with two symmetrically arranged cutter mounting seats, each cutter mounting seat comprises a guide sleeve, a mounting plate fixed at the upper end of the guide sleeve and an adjusting mechanism arranged on the mounting plate, a cutter bar is arranged in the guide sleeve, and the adjusting mechanism acts on the cutter bar.
As an improvement, adjustment mechanism includes thread bush and threaded rod, be equipped with first screw hole on the mounting panel, the upper end of cutter arbor is equipped with the second screw hole, the thread bush is with first screw hole cooperation and stretch into in the direction sleeve, the threaded rod passes behind the internal thread hole of thread bush and is connected with the second screw hole.
As an improvement, the rough milling cutter is arranged on the inner cutter head, and the fine milling cutter is arranged on the outer cutter head
Compared with the prior art, the utility model has the beneficial effects that:
1. when the rough milling is performed, the pressure is not introduced into the pressure chamber, the outer cutter disc is at the upper limit position under the action of the reset spring, the rough milling blade on the inner cutter disc is lower than the finish milling blade on the outer cutter disc, the inner cutter disc is a working cutter disc, and the position of the inner cutter disc is not influenced by the supporting force of the rough milling due to the fact that the inner cutter disc is directly fixedly connected with the connecting taper shank; when the milling cutter is used for finish milling, the pressure is introduced into the pressure chamber and is larger than the elastic force of the reset spring, the pressure forces the sliding sleeve to move downwards together with the whole outer cutter disc, when the outer cutter disc moves to the lower limit position, the finish milling cutter on the outer cutter disc is lower than the rough milling cutter on the inner cutter disc, and the outer cutter disc is used as a working cutter disc, and the supporting force generated by finish milling on the outer cutter disc is smaller, so that the processing position of the outer cutter disc is not influenced, and the processing precision is ensured;
2. the hydraulic pressure or the air pressure enters the pressure chamber through a channel in the connecting taper shank, so that a rotary joint is eliminated, and the tightness of the pressure chamber is improved;
3. the sliding sleeve of the inner cutter disc and the connecting taper shank form a power cylinder, and the flange ring is used as a piston of the power cylinder, so that the power structure is compact;
4. the width of the sealing groove is larger than the diameter of the sealing ring, and when the sliding sleeve moves up and down, the sealing ring rolls along with the sliding sleeve, so that the resistance of the sliding sleeve is reduced;
5. the fine milling blade of the outer cutter head can be subjected to height fine adjustment through an adjusting mechanism;
6. the sliding sleeve is matched with the connecting seat through an inclined plane, so that the outer cutter head can be positioned more accurately after moving.
Drawings
Fig. 1 is a perspective view of the present utility model.
Fig. 2 is a side view of the present utility model.
Fig. 3 is a cross-sectional view of the outer cutterhead of the present utility model in an operational state.
Fig. 4 is a cross-sectional view of the inner cutterhead of the present utility model in an operational state.
Fig. 5 is a cross-sectional view from another perspective of the present utility model.
Fig. 6 is a sectional view of the sliding sleeve.
Fig. 7 is an enlarged view at a of fig. 3.
Description of the embodiments
The utility model is further described below with reference to the drawings.
As shown in fig. 1 to 5, a rough and fine milling head comprises a connecting taper shank 1, an outer cutter head 2, an inner cutter head 3 and a connecting seat 5; the diameter of the outer cutter disc 2 is larger than that of the inner cutter disc 3, the outer cutter disc 2 is positioned at the periphery of the inner cutter disc 3, and the axes of the outer cutter disc 2 and the inner cutter disc 3 are overlapped.
The connecting taper shank 1 comprises a taper shank 11 and an annular plate 12 arranged on the outer wall of the taper shank 11, the taper shank 11 and the annular plate 12 are of an integrated structure, the upper end of the taper shank 11 is connected with a main shaft through threads, a lower end connecting seat 5 of the taper shank 11 is connected through bolts, the inner cutter disc 3 is fixed on the connecting seat 5 through bolts, and the inner cutter disc 3, the connecting seat 5 and the connecting taper shank 1 are connected into an integrated synchronous rotation; the connecting taper shank 1 is internally provided with a channel 13, one end of the channel 13 is communicated with the channel in the main shaft, the other end of the channel 13 is communicated with the pressure chamber 6, and externally introduced gas or hydraulic pressure enters the pressure chamber 6 through the channel of the connecting taper shank 1, so that a rotary joint is omitted, and the tightness of the pressure chamber 6 is improved.
As shown in fig. 3 to 6, the outer cutter head 2 includes a sliding sleeve 21 and a cutter mount 22 provided on an outer wall of the sliding sleeve 21. The inner wall of the sliding sleeve 21 is provided with a flange ring 211, the flange ring 211 and the sliding sleeve 21 are integrally formed, an upper groove 212 is formed above the flange ring 211 in the sliding sleeve 21, a lower groove 213 is formed below the flange ring 211 in the sliding sleeve 21, a through hole 214 is formed in the flange ring 211, and the upper groove 212 is communicated with the lower groove 213 through the through hole 214. The annular plate 12 is arranged in the upper groove 212, the lower end of the taper shank 11 is inserted into a through hole 214 formed by the flange ring 211, and the connecting seat 5 is arranged in the lower groove 213; the sealed pressure chamber 6 is formed between the annular plate 12 and the flange ring 211, the sliding sleeve 21 of the inner cutter disc 3 and the connecting taper shank 1 form a power cylinder, the flange ring 211 is a piston of the power cylinder, and the power structure is combined with the milling head structure and integrated into a whole, so that the whole structure is more compact. A first sealing groove 61 is arranged between the outer wall of the annular plate 12 and the inner wall of the sliding sleeve 21, a first sealing ring 62 is arranged in the first sealing groove 61, a second sealing groove 63 is arranged between the outer wall of the taper shank 11 and the inner wall of the flange ring 211, and a second sealing ring 64 is arranged in the second sealing groove 63; the width of the first sealing groove 61 is larger than the diameter of the first sealing ring 62, and the width of the second sealing groove 63 is larger than the diameter of the second sealing ring 64; when the sliding sleeve 21 is positioned at the lower limit position, the first sealing ring 62 is positioned at the bottom of the first sealing ring 62, the second sealing ring 64 is positioned at the top of the second sealing groove 63, and when the sliding sleeve 21 is positioned at the upper limit position, the first sealing ring 62 is positioned at the top of the first sealing ring 62, and the second sealing ring 64 is positioned at the lower part of the second sealing groove 63; the width of seal groove is greater than the diameter of sealing washer, and when sliding sleeve 21 reciprocated, the sealing washer follows the roll, reduces the resistance that sliding sleeve 21 received, and can play the effect to pressure chamber 6 seal. An upper dust ring 65 is arranged on the upper portion of the inner wall of the sliding sleeve 21 corresponding to the outer wall of the annular plate 12, and a lower dust ring 66 is arranged on the lower portion of the inner wall of the sliding sleeve 21 corresponding to the outer wall of the connecting seat 5. The upper portion of the outer wall of the connecting seat 5 is provided with a first inclined plane 51, the inner wall of the sliding sleeve 21 is provided with a second inclined plane 215 matched with the first inclined plane 51, and the sliding sleeve 21 is matched with the connecting seat 5 through the inclined plane, so that the outer cutter head 2 can be positioned more accurately after moving.
As shown in fig. 2 to 4, in the present embodiment, two symmetrically arranged tool mounting seats 22 are provided on the outer wall of the sliding sleeve 21, and the tool mounting seats 22 may be fixed by bolts or may be integrally formed with the sliding sleeve 21; the cutter mounting seat 22 comprises a guide sleeve 221, a mounting plate 222 fixed at the upper end of the guide sleeve 221 and an adjusting mechanism 223 arranged on the mounting plate 222, wherein a cutter bar 224 is arranged in the guide sleeve 221, the adjusting mechanism 223 acts on the cutter bar 224, and the cutter bar 224 is driven to move up and down together with the cutter blade through the adjusting mechanism 223. As shown in fig. 7, the adjusting mechanism 223 includes a threaded sleeve 2232 and a threaded rod 2231, a first threaded hole is formed in the mounting plate 222, a second threaded hole is formed in the upper end of the cutter bar 224, the threaded sleeve 2232 is matched with the first threaded hole and extends into the guide sleeve 221, and the threaded rod 2231 passes through the internal threaded hole of the threaded sleeve 2232 and then is connected with the second threaded hole; the upper end of the threaded sleeve 2232 and the upper end of the threaded rod 2231 are respectively provided with a hexagonal head part, the hexagonal head parts are arranged outside the guide sleeve 221, so that the tool is convenient to operate and rotate, and after the position adjustment of the cutter bar 224 is finished, the cutter bar is locked by the bolts 4 extending into the guide sleeve 221; the side of the cutter bar 224 is provided with a positioning inclined plane for fixing the angle, so that the correct installation angle of the cutter bar is ensured.
As shown in fig. 4 and 5, a positioning protrusion and a mounting plane arranged at the periphery of the positioning protrusion are arranged in the middle of the top of the connecting seat 5, a positioning groove is arranged at the lower end of the taper shank 11, the positioning protrusion is inserted into the positioning groove, and the periphery of the positioning protrusion is locked at the lower end of the taper shank 11 through a plurality of bolts. A plurality of return springs 7 and transmission parts are arranged between the bottom of the flange ring 211 and the top mounting plane of the connecting seat 5; the top surface of the connecting seat 5 is provided with a first mounting hole for mounting the return spring 7 and a second mounting hole for mounting a transmission component, the bottom surface of the flange ring 211 is provided with a third mounting hole, the transmission component is a transmission pin 8, the lower end of the transmission pin 8 is arranged in the second mounting hole, and the upper end of the transmission pin 8 is arranged in the third mounting hole; the return spring 7 has upward elasticity to the flange ring 211, and the connecting seat 5 drives the sliding sleeve 21 to rotate through the transmission part, so that the outer cutter 2 and the inner cutter 3 synchronously rotate.
In this embodiment, the rough milling cutter is mounted on the inner cutter 3, and the fine milling cutter is mounted on the outer cutter 2. When the milling cutter is used for rough milling, the pressure is not introduced into the pressure chamber 6, the outer cutter head 2 is at the upper limit position under the action of the reset spring 7, the rough milling blade on the inner cutter head 3 is lower than the finish milling blade on the outer cutter head 2, the inner cutter head 3 is a working cutter head, and the position of the inner cutter head 3 is not influenced by the supporting force of rough milling because the inner cutter head 3 is directly and fixedly connected with the connecting taper shank 1; when the milling cutter is used for finish milling, the pressure chamber 6 is filled with pressure which is larger than the elastic force of the reset spring 7, the sliding sleeve 21 and the whole outer cutter 2 are forced to move downwards by the pressure, when the outer cutter 2 moves to the lower limit position, the finish milling cutter on the outer cutter 2 is lower than the rough milling cutter on the inner cutter 3, and the outer cutter 2 is used as a working cutter, and the machining position of the outer cutter 2 is not influenced due to smaller supporting force generated by finish milling on the outer cutter 2, so that the machining precision is ensured.
Claims (12)
1. The milling head comprises a connecting taper shank, an outer cutter disc and an inner cutter disc, wherein the diameter of the outer cutter disc is larger than that of the inner cutter disc, the outer cutter disc is positioned at the periphery of the inner cutter disc, and the axes of the outer cutter disc and the inner cutter disc are overlapped; the method is characterized in that: the inner cutter head is fixed at the lower end of the connecting taper shank, and the outer cutter head can move up and down relative to the inner cutter head.
2. A rough and fine milling head according to claim 1, wherein: the outer cutter head comprises a sliding sleeve and a cutter mounting seat arranged on the outer wall of the sliding sleeve, a flange ring is arranged on the inner wall of the sliding sleeve, the connecting taper shank comprises a taper shank and an annular plate arranged on the outer wall of the taper shank, the annular plate is arranged in the sliding sleeve and is positioned above the flange ring, the lower end of the taper shank is inserted into a through hole formed by the flange ring, a sealed pressure chamber is formed between the annular plate and the flange ring, a channel communicated with the pressure chamber is arranged in the connecting taper shank, a reset spring for driving the sliding sleeve to reset upwards is arranged below the flange ring, and the sliding sleeve is linked with the inner cutter head.
3. A rough and fine milling head according to claim 2, wherein: an upper groove is formed above the flange ring in the sliding sleeve, a lower groove is formed below the flange ring in the sliding sleeve, the annular plate is arranged in the upper groove, and the inner cutter head stretches into the lower groove and is connected with the lower end of the taper shank.
4. A rough and fine milling head according to claim 3, wherein: the lower groove is internally provided with a connecting seat, the connecting seat is fixed at the lower end of the taper shank through a bolt, and the inner cutter head is fixed on the connecting seat through a bolt.
5. A rough and fine milling head according to claim 4, wherein: the reset spring is arranged between the connecting seat and the flange ring, a transmission part is arranged between the connecting seat and the flange ring, and the sliding sleeve is linked with the inner cutter head through the transmission part.
6. A rough and fine milling head according to claim 5, wherein: the top surface of connecting seat is equipped with the first mounting hole that is used for installing reset spring and is used for installing the second mounting hole of drive unit, the bottom surface of flange ring is equipped with the third mounting hole, drive unit is the drive pin, the lower extreme of drive pin is established in the second mounting hole, the upper end of drive pin is established in the third mounting hole.
7. A rough and fine milling head according to claim 4, wherein: the upper part of the outer wall of the connecting seat is provided with a first inclined plane, and the inner wall of the sliding sleeve is provided with a second inclined plane matched with the first inclined plane.
8. A rough and fine milling head according to claim 2, wherein: a first sealing groove is formed between the outer wall of the annular plate and the inner wall of the sliding sleeve, a first sealing ring is arranged in the first sealing groove, a second sealing groove is formed between the outer wall of the taper shank and the inner wall of the flange ring, and a second sealing ring is arranged in the second sealing groove.
9. The rough and fine milling head of claim 8, wherein: the width of the first sealing groove is larger than the diameter of the first sealing ring, and the width of the second sealing groove is larger than the diameter of the second sealing ring; when the sliding sleeve is located at the lower limit position, the first sealing ring is located at the bottom of the first sealing ring, the second sealing ring is located at the top of the second sealing groove, and when the sliding sleeve is located at the upper limit position, the first sealing ring is located at the top of the first sealing ring, and the second sealing ring is located at the lower part of the second sealing groove.
10. A rough and fine milling head according to claim 2, wherein: the outer wall of the sliding sleeve is provided with two symmetrically arranged cutter mounting seats, each cutter mounting seat comprises a guide sleeve, a mounting plate fixed at the upper end of the guide sleeve and an adjusting mechanism arranged on the mounting plate, a cutter bar is arranged in the guide sleeve, and the adjusting mechanism acts on the cutter bar.
11. The rough and fine milling head according to claim 10, wherein: the adjusting mechanism comprises a thread sleeve and a threaded rod, a first threaded hole is formed in the mounting plate, a second threaded hole is formed in the upper end of the cutter rod, the thread sleeve is matched with the first threaded hole and stretches into the guide sleeve, and the threaded rod penetrates through the inner threaded hole of the thread sleeve and then is connected with the second threaded hole.
12. A rough and fine milling head according to claim 1, wherein: the rough milling cutter blade is arranged on the inner cutter disc, and the finish milling cutter blade is arranged on the outer cutter disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321666729.3U CN220216849U (en) | 2023-06-28 | 2023-06-28 | Rough and fine integrated milling head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321666729.3U CN220216849U (en) | 2023-06-28 | 2023-06-28 | Rough and fine integrated milling head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220216849U true CN220216849U (en) | 2023-12-22 |
Family
ID=89179301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321666729.3U Active CN220216849U (en) | 2023-06-28 | 2023-06-28 | Rough and fine integrated milling head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220216849U (en) |
-
2023
- 2023-06-28 CN CN202321666729.3U patent/CN220216849U/en active Active
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| GR01 | Patent grant |