CN113997138A - Coarse grinding machine for producing single-fiber round capillary and using method thereof - Google Patents
Coarse grinding machine for producing single-fiber round capillary and using method thereof Download PDFInfo
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- CN113997138A CN113997138A CN202111310575.XA CN202111310575A CN113997138A CN 113997138 A CN113997138 A CN 113997138A CN 202111310575 A CN202111310575 A CN 202111310575A CN 113997138 A CN113997138 A CN 113997138A
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- 239000000835 fiber Substances 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 230000009471 action Effects 0.000 claims abstract description 5
- 238000005498 polishing Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000009467 reduction Effects 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 2
- 239000013307 optical fiber Substances 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/38—Single-purpose machines or devices for externally grinding travelling elongated stock, e.g. wire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
Abstract
The invention relates to the technical field of single-fiber circular capillary tube production equipment, in particular to a rough grinding machine for producing a single-fiber circular capillary tube and a using method thereof. According to the invention, under the action of the processing mechanism, the single-fiber circular capillary tube can be subjected to all-around coarse grinding, so that the situation that the local part of the single-fiber circular capillary tube is not subjected to coarse grinding due to insufficient mechanical accuracy is prevented.
Description
Technical Field
The invention relates to the technical field of single-fiber circular capillary production equipment, in particular to a rough grinding machine for producing single-fiber circular capillaries and a using method thereof.
Background
The fine optical fiber is enclosed in a plastic sheath so that it can be bent without breaking. Generally, a transmitting device at one end of an optical fiber transmits light pulses to the optical fiber by using a light emitting diode or a laser beam, a receiving device at the other end of the optical fiber detects the pulses by using a photosensitive element, and a single-fiber circular capillary is mainly used for conducting optical fiber signals, namely conducting partial laser or light pulses through the single-fiber circular capillary;
the single-fiber circular capillary tube is produced on the production principle mainly through heating and drawing, and the diameter of the single-fiber circular capillary tube is smaller and is usually several millimeters, so that a rough grinding machine is required to perform accurate rough grinding, and the production requirement of the single-fiber circular capillary tube can be met.
Disclosure of Invention
The invention aims to provide a rough grinding machine for producing single-fiber circular capillaries and a using method thereof, so as to solve the problems in the background technology. In order to achieve the purpose, the invention provides the following technical scheme: the rough grinding machine for producing the single-fiber round capillary tube comprises an operation table, wherein a plurality of support legs are fixedly mounted at the bottom of the operation table, a power box is fixedly connected to one side of the top of the operation table, a grinding motor is fixedly connected to the inner wall of the power box, the output end of the grinding motor is fixedly connected to the power input end of a speed reducer, a transmission shaft is fixedly connected to the power output end of the speed reducer, the tail end of the transmission shaft sequentially rotates to penetrate through the side wall of the power box and the side wall of a machining mechanism and is arranged in the machining mechanism, and a traction mechanism is further mounted at one side, away from the power box, of the top of the operation table.
Preferably, processing mechanism is including processing case, traction tube, inlet pipe and drive bevel gear, processing case fixed connection is at the top of operation panel, the traction tube has been cup jointed to the lateral wall top that the headstock was kept away from to the processing case, and the inlet pipe has been cup jointed to the processing case below the lateral wall of installation headstock, the traction tube with the inlet pipe all extends to the inside cavity of processing case in the one end that is close to you headstock, and traction tube and inlet pipe are arranging the port of processing incasement inside cavity in the coincidence of the ascending axis of vertical side.
Preferably, the processing mechanism still includes driven bevel gear pipe, adjusting ring case, bearing, electric putter and polishing piece, the transmission shaft is arranging the one end fixedly connected with initiative bevel gear of processing incasement portion in, the driven bevel gear pipe of initiative bevel gear transmission connection, driven bevel gear pipe fixed connection is at the top of adjusting ring case, the inner wall at the processing case is cup jointed through the bearing rotation to the adjusting ring case, the inside of adjusting ring case is hollow structure, the inside symmetry fixedly connected with two the same electric putter of adjusting ring case, electric putter's output runs through the lateral wall and the fixedly connected with polishing piece of adjusting ring case.
Preferably, the driven bevel gear pipe is of a circular pipe type structure, a bevel gear is sleeved above the driven bevel gear pipe, and the bevel gear is meshed with the driving bevel gear.
Preferably, drive mechanism includes first support, draft roller and second support, the top of operation panel is keeping away from two the same first supports of one side symmetry fixedly connected with of headstock, two from the top down swivelling joint has two the same draft rollers between the first support top, the top of operation panel is keeping away from one side fixedly connected with second support of headstock, and from the top down rotates in proper order between the top of second support and is connected with two the same carry over pinch rolls, two the equal fixedly connected with driven gear in end of carry over pinch rolls, two intermeshing between the driven gear is located the top the driving gear is connected in driven gear meshing, driving gear fixed connection is at traction motor's output, traction motor fixed connection is at the top of second support.
Preferably, the center extension line of the horizontal section of the feeding pipe penetrates through the center point of the gap between the two drawing rollers, and the center extension line of the horizontal section of the drawing pipe penetrates through the center point of the gap between the two drawing rollers.
Preferably, the adjusting ring box, the vertical section of the traction pipe arranged in the processing box and the central axis of the feeding pipe in the vertical direction of the vertical section arranged in the processing box are coincident.
Preferably, a control panel is embedded in the side wall of the power box and is electrically connected with the grinding motor, the electric push rod and the traction motor.
The use method of the rough grinding machine for producing the single-fiber round capillary comprises the following steps:
firstly, assembling a workpiece, enabling a single-fiber circular capillary tube to be coarsely ground to penetrate between two polishing plates, inserting the single-fiber circular capillary tube into the processing box through a traction tube, then inserting the single-fiber circular capillary tube between the two polishing plates, finally inserting the single-fiber circular capillary tube into the traction tube and taking out the single-fiber circular capillary tube, enabling the tip of the single-fiber circular capillary tube coming out of the traction tube to penetrate between two traction rollers, and then starting the next step;
secondly, preparing before processing, controlling the two electric push rods to work through a control panel, and confirming the stroke quantity of the electric push rods according to the outer diameter of the single-fiber circular capillary tube so that the two polishing sheets are tightly attached to the surface of the single-fiber circular capillary tube;
and thirdly, processing, starting a grinding motor, indirectly driving a regulating ring box to rotate by the grinding motor, indirectly driving two grinding sheets to rotate by the regulating ring box, starting rough grinding on the outer surface of the single-fiber circular capillary by the two grinding sheets, simultaneously starting a traction motor through a control panel, indirectly driving two traction rollers to rotate by the traction motor, driving the single-fiber circular capillary to move under the action of the rotation of the two traction rollers, and coarsely grinding the outer surfaces of the single-fiber circular capillary to be different during rough grinding due to the movement of the single-fiber circular capillary.
Compared with the prior art, the invention has the beneficial effects that:
the single-fiber round capillary tube rough grinding machine can perform all-around rough grinding on the single-fiber round capillary tube under the action of the processing mechanism, so that the situation that the local part of the single-fiber round capillary tube is not subjected to rough grinding due to insufficient mechanical accuracy is prevented;
the single-fiber round capillary can be drawn out through the traction motor, the whole process is automatically and coarsely ground, and after the single-fiber round capillary is assembled, the processed single-fiber round capillary only needs to be drawn out by the traction mechanism;
the invention can adjust the grinding size according to the diameter of the processed single-fiber round capillary tube, thereby being suitable for most single-fiber round capillary tubes on the market, increasing the applicable direction of the equipment and being different from the prior rough grinding machine which can only process the single-fiber round capillary tube with specific size.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic diagram of the right-view structure of the present invention;
FIG. 3 is a schematic front view of the present invention;
FIG. 4 is a schematic cross-sectional view of FIG. 3 according to the present invention;
FIG. 5 is an enlarged view of a portion of the structure at A in FIG. 4 according to the present invention;
FIG. 6 is a rear view of the present invention;
FIG. 7 is a schematic top view of the present invention;
fig. 8 is a schematic view of a driven bevel gear structure of the present invention.
In the figure: 1. an operation table; 2. a support leg; 3. a power box; 4. polishing the motor; 5. a speed reducer; 6. a control panel; 7. a drive shaft; 8. a processing box; 9. a traction tube; 10. a feed pipe; 11. a drive bevel gear; 12. a driven bevel gear tube; 13. adjusting the ring box; 14. a bearing; 15. an electric push rod; 16. grinding the sheets; 17. a first bracket; 18. a drawing roller; 19. a second bracket; 20. a traction roller; 21. a driven gear; 22. a driving gear; 23. a traction motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by workers skilled in the art without any inventive work based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1 to 8, the present invention provides a technical solution: rough grinding machine is used in production of single fiber circular capillary, including operation panel 1, the bottom fixed mounting of operation panel 1 has a plurality of stabilizer blade 2, top one side fixed connection of operation panel 1 has headstock 3, the inner wall fixedly connected with grinding motor 4 of headstock 3, grinding motor 4's output fixed connection is at the power input end of reduction gear 5, the power output end fixedly connected with transmission shaft 7 of reduction gear 5, the end of transmission shaft 7 rotates the lateral wall that runs through headstock 3 and the lateral wall of processing agency in proper order and places processing agency's inside in, drive mechanism is still installed in one side of keeping away from headstock 3 at the top of operation panel 1.
In this embodiment, as shown in fig. 3, fig. 4 and fig. 5, the processing mechanism includes processing box 8, traction tube 9, inlet pipe 10 and drive bevel gear 11, processing box 8 fixed connection is at the top of operation panel 1, traction tube 9 has been cup jointed above the lateral wall that power box 3 was kept away from to processing box 8, processing box 8 has cup jointed inlet pipe 10 below the lateral wall of installation power box 3, traction tube 9 all extends to the inside cavity of processing box 8 with inlet pipe 10 in the one end that is close to your power box 3, and traction tube 9 coincides with inlet pipe 10 at the ascending axis of the port of arranging processing box 8 inside cavity in vertical direction.
In this embodiment, as shown in fig. 3, fig. 4, and fig. 5, the processing mechanism further includes a driven bevel gear pipe 12, an adjusting ring box 13, a bearing 14, an electric push rod 15, and a polishing piece 16, the transmission shaft 7 is fixedly connected with a driving bevel gear 11 at one end inside the processing box 8, the driving bevel gear 11 is in transmission connection with the driven bevel gear pipe 12, the driven bevel gear pipe 12 is fixedly connected at the top of the adjusting ring box 13, the adjusting ring box 13 is rotatably sleeved on the inner wall of the processing box 8 through the bearing 14, the inside of the adjusting ring box 13 is of a hollow structure, the inside of the adjusting ring box 13 is symmetrically and fixedly connected with two identical electric push rods 15, and the output end of the electric push rod 15 penetrates through the side wall of the adjusting ring box 13 and is fixedly connected with the polishing piece 16.
In this embodiment, as shown in fig. 5 and 8, the driven bevel gear pipe 12 has a circular pipe structure, and a bevel gear is sleeved on the driven bevel gear pipe 12 and engaged with the drive bevel gear 11.
In the present embodiment, as shown in fig. 1 and 2, as shown in fig. 3 and 4, the traction mechanism includes a first support 17, the drafting rollers 18 and a second support 19, two identical first supports 17 are symmetrically and fixedly connected to one side of the top of the operation table 1 far away from the power box 3, two identical drafting rollers 18 are rotatably connected between the top ends of the two first supports 17 from top to bottom, one side of the top of the operation table 1 far away from the power box 3 is fixedly connected with a second support 19, two identical drafting rollers 20 are sequentially and rotatably connected between the top ends of the second support 19 from top to bottom, driven gears 21 are fixedly connected to the tail ends of the two drafting rollers 20, the two driven gears 21 are engaged with each other, the driven gear 21 located above is engaged with a driving gear 22, the driving gear 22 is fixedly connected to the output end of a traction motor 23, and the traction motor 23 is fixedly connected to the top of the second support 19.
In this embodiment, as shown in fig. 3, the central extension line of the horizontal section of the feeding pipe 10 passes through the central point of the gap between the two drawing rollers 18, and the central extension line of the horizontal section of the drawing pipe 9 passes through the central point of the gap between the two drawing rollers 20.
In the present embodiment, as shown in fig. 5, the adjusting ring box 13, the traction pipe 9, and the feed pipe 10 are overlapped in the vertical direction at the vertical section disposed inside the processing box 8, and the central axis thereof is aligned with the central axis thereof at the vertical section disposed inside the processing box 8.
In this embodiment, as shown in fig. 1, a control panel 6 is embedded in the side wall of the power box 3, and the control panel 6 is electrically connected to the grinding motor 4, the electric push rod 15 and the traction motor 23.
The embodiment also provides a using method of the rough grinding machine for producing the single-fiber round capillary, which comprises the following steps:
firstly, assembling a workpiece, enabling a single-fiber circular capillary to be coarsely ground to penetrate between two polishing plates 16, inserting the single-fiber circular capillary into the interior of a processing box 8 through a traction tube 9, then inserting the single-fiber circular capillary between the two polishing plates 16, finally inserting the single-fiber circular capillary into the traction tube 9 and taking out the single-fiber circular capillary, enabling the tip of the single-fiber circular capillary coming out of the traction tube 9 to penetrate between two traction rollers 20, and then starting the next step;
secondly, preparing before processing, controlling the two electric push rods 15 to work through the control panel 6, and confirming the stroke quantity of the electric push rods 15 according to the outer diameter of the single-fiber circular capillary tube so that the two polishing sheets 16 are tightly attached to the surface of the single-fiber circular capillary tube;
and thirdly, processing, wherein the grinding motor 4 is started, the grinding motor 4 indirectly drives the adjusting ring box 13 to rotate, the adjusting ring box 13 indirectly drives the two grinding pieces 16 to rotate, the two grinding pieces 16 start to roughly grind the outer surface of the single-fiber circular capillary tube, the traction motor 23 is started through the control panel 6, the traction motor 23 indirectly drives the two traction rollers 20 to rotate, the single-fiber circular capillary tube is driven to move under the action of the rotation of the two traction rollers 20, and the different outer surfaces of the single-fiber circular capillary tube can be roughly ground during rough grinding due to the movement of the single-fiber circular capillary tube.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. Single fiber circular capillary production is with rough grinding machine, including operation panel (1), the bottom fixed mounting of operation panel (1) has a plurality of stabilizer blade (2), its characterized in that: top one side fixed connection of operation panel (1) has headstock (3), the inner wall fixedly connected with grinding motor (4) of headstock (3), the output fixed connection of grinding motor (4) is at the power input end of reduction gear (5), the power output end fixedly connected with transmission shaft (7) of reduction gear (5), the end of transmission shaft (7) rotates the lateral wall that runs through headstock (3) and the lateral wall of processing mechanism in proper order and places in the inside of processing mechanism, drive mechanism is still installed in one side of keeping away from headstock (3) at the top of operation panel (1).
2. The rough mill for producing single-fiber circular capillaries according to claim 1, wherein: processing mechanism is including processing case (8), traction tube (9), inlet pipe (10) and drive bevel gear (11), processing case (8) fixed connection is at the top of operation panel (1), traction tube (9) have been cup jointed to the lateral wall top of headstock (3) is kept away from in processing case (8), and processing case (8) have cup jointed inlet pipe (10) in the lateral wall below of installation headstock (3), traction tube (9) with inlet pipe (10) all extend to the inside cavity of processing case (8) in the one end that is close to your headstock (3), and traction tube (9) and inlet pipe (10) are arranging the port of processing case (8) inside cavity in the coincidence of the ascending axis of vertical side.
3. The rough mill for producing single-fiber circular capillaries according to claim 2, wherein: the processing mechanism further comprises a driven bevel gear pipe (12), an adjusting ring box (13), a bearing (14), an electric push rod (15) and a polishing piece (16), one end of the transmission shaft (7) inside the processing box (8) is fixedly connected with a driving bevel gear (11), the driving bevel gear (11) is in transmission connection with the driven bevel gear pipe (12), the driven bevel gear pipe (12) is fixedly connected to the top of the adjusting ring box (13), the adjusting ring box (13) is rotatably sleeved on the inner wall of the processing box (8) through the bearing (14), the inside of the adjusting ring box (13) is of a hollow structure, two identical electric push rods (15) are symmetrically and fixedly connected to the inside of the adjusting ring box (13), and the output end of each electric push rod (15) penetrates through the side wall of the adjusting ring box (13) and is fixedly connected with the polishing piece (16).
4. The rough mill for producing single-fiber circular capillaries according to claim 3, wherein: the driven bevel gear pipe (12) is of a circular pipe type structure, a bevel gear is sleeved above the driven bevel gear pipe (12), and the bevel gear is meshed with the driving bevel gear (11).
5. The rough mill for producing single-fiber circular capillaries according to claim 1, wherein: the traction mechanism comprises a first support (17), two identical first supports (17) which are symmetrically and fixedly connected with one side of the top of the operation platform (1) far away from the power box (3), two identical traction rollers (18) are rotatably connected between the top ends of the first supports (17) from top to bottom, one side of the top of the operation platform (1) far away from the power box (3) is fixedly connected with a second support (19), two identical traction rollers (20) are sequentially and rotatably connected between the top ends of the second supports (19) from top to bottom, the tail ends of the two traction rollers (20) are fixedly connected with driven gears (21) which are mutually meshed between the driven gears (21), the driven gears (21) positioned above are meshed with and connected with a driving gear (22), and the driving gear (22) is fixedly connected at the output end of a traction motor (23), the traction motor (23) is fixedly connected to the top of the second bracket (19).
6. The rough mill for producing single-fiber circular capillaries according to claim 2, wherein: the center extension line of the horizontal section of the feeding pipe (10) penetrates through the center point of a gap between two drawing rollers (18), and the center extension line of the horizontal section of the drawing pipe (9) penetrates through the center point of a gap between two drawing rollers (20).
7. The rough mill for producing single-fiber circular capillaries according to claim 3, wherein: the adjusting ring box (13) and the vertical section of the traction pipe (9) arranged in the processing box (8) are overlapped with the central axis of the feeding pipe (10) in the vertical direction of the vertical section arranged in the processing box (8).
8. The rough mill for producing single-fiber circular capillaries according to claim 1, wherein: the lateral wall of headstock (3) is embedded to be installed control panel (6), control panel (6) electric connection grinding motor (4), electric putter (15) and traction motor (23).
9. Use of a rough mill for the production of single-fiber round capillaries according to any of claims 1 to 7, characterized in that: the using method comprises the following steps:
firstly, assembling a workpiece, enabling a single-fiber circular capillary to be coarsely ground to penetrate between two polishing plates (16), inserting the single-fiber circular capillary into the interior of a processing box (8) through a traction tube (9), then inserting the single-fiber circular capillary between the two polishing plates (16), finally inserting the single-fiber circular capillary into the traction tube (9) and taking out the single-fiber circular capillary, enabling the tip of the single-fiber circular capillary coming out of the traction tube (9) to penetrate between two traction rollers (20), and then starting the next step;
secondly, preparing before processing, controlling the two electric push rods (15) to work through the control panel (6), and confirming the stroke quantity of the electric push rods (15) according to the outer diameter of the single-fiber circular capillary tube so that the two polishing sheets (16) are tightly attached to the surface of the single-fiber circular capillary tube;
and thirdly, processing, starting the grinding motor (4), the grinding motor (4) indirectly drives the adjusting ring box (13) to rotate, the adjusting ring box (13) indirectly drives the two grinding pieces (16) to rotate, the two grinding pieces (16) start to roughly grind the outer surface of the single-fiber circular capillary tube, and meanwhile, the traction motor (23) is started through the control panel (6), the traction motor (23) indirectly drives the two traction rollers (20) to rotate, under the rotating action of the two traction rollers (20), the single-fiber circular capillary tube is driven to move, and due to the movement of the single-fiber circular capillary tube, different outer surfaces of the single-fiber circular capillary tube can be roughly ground when the single-fiber circular capillary tube is roughly ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111310575.XA CN113997138A (en) | 2021-11-08 | 2021-11-08 | Coarse grinding machine for producing single-fiber round capillary and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111310575.XA CN113997138A (en) | 2021-11-08 | 2021-11-08 | Coarse grinding machine for producing single-fiber round capillary and using method thereof |
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| CN113997138A true CN113997138A (en) | 2022-02-01 |
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| CN202111310575.XA Pending CN113997138A (en) | 2021-11-08 | 2021-11-08 | Coarse grinding machine for producing single-fiber round capillary and using method thereof |
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