CN108788955A - Live cone grinding machine that is a kind of compact-sized and can accurately adjusting taper - Google Patents
Live cone grinding machine that is a kind of compact-sized and can accurately adjusting taper Download PDFInfo
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- CN108788955A CN108788955A CN201810764999.5A CN201810764999A CN108788955A CN 108788955 A CN108788955 A CN 108788955A CN 201810764999 A CN201810764999 A CN 201810764999A CN 108788955 A CN108788955 A CN 108788955A
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- Prior art keywords
- rack
- centrum
- compact
- sized
- live
- Prior art date
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- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000003028 elevating effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011152 fibreglass Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
-
- 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
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
-
- 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
- B24B5/35—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention discloses a kind of compact-sized and can accurately adjust the live cone grinding machine of taper, belong to cutting technique field comprising rack is characterized in that：Lifting and tilt adjustment device are installed in the rack, motor is installed in lifting and tilt adjustment device, cone grinding tool is installed in the shaft of motor；Horizontally disposed benchmark reference plate is also installed, benchmark reference plate is located at the top of centrum mold, tension mechanism is arranged below centrum mold, and tension mechanism is mounted on by tensioner control device in rack in rack.This cone grinding machine can be by lifting and tilt adjustment device come the height and gradient of adjustment cone grinding tool, and by horizontal positioned benchmark reference plate as reference, the angle of inclination of centrum grinding tool outer wall can accurately be measured, the gradient of centrum grinding tool outer wall is set to reach angle to be required, and tension mechanism carrys out tensioner and fixes tube end portion, to realize the automatic grinding core processing of tube body.
Description
Technical field
The invention belongs to cutting technique fields, and in particular to live grinding core that is a kind of compact-sized and can accurately adjusting taper
Machine.
Background technology
Fiberglass pressure piping is a kind of lightweight, high-strength, corrosion resistant nonmetal pipeline.In-site installation and tube body injury are more
When changing, needs to carry out grinding core processing to the connecting pin of tube body, could realize and require the conical surface in handling with the connection of connector, grinding core
It is smooth, without groove, and taper is required to meet between 0.0599 ~ 0.0677, and required precision is high, the requirement of constructing operation process technology
It is high.
Chinese utility model patent 201420362573.4 provides a kind of high-pressure fiberglass pipe numerical control grinding core cutting dress
It sets, tensioner vent plug motor, feeding motor and cutter motor, socket end Cutting platform is laterally set on female end Cutting platform
It is equipped with cutting two sets of motors of grinding core and mating feeding motor and cutter motor, socket Cutting platform can be by switching gas
Cylinder switching position.Such cutter device can complete cutting and the grinding core of fiberglass tube body, and but its structure is complex, bulky,
And powerful electric energy is needed, its skill can not be put to good use at the narrow scene of construction space.
Therefore, it is necessary to research and develop a compact-sized, cone grinding machine that occupies little space and can flexibly control taper, to assist to carry
High engineering efficiency reduces construction cost, carrys out application of the further genralrlization GRP pipe in engineering field with this.
Invention content
Technical problem to be solved by the invention is to provide a kind of compact-sized and can accurately adjust the live grinding core of taper
Machine occupies little space and can control taper.
In order to solve the above technical problems, the technical scheme is that：Design is a kind of compact-sized and can accurately adjust cone
The live cone grinding machine of degree, including rack, it is characterised in that：Lifting and tilt adjustment device be installed in the rack, lifting and
Motor is installed on tilt adjustment device, cone grinding tool is installed in the shaft of motor；Horizontally disposed benchmark ginseng is also installed in rack
According to plate, benchmark reference plate is located at the top of centrum mold, tension mechanism is arranged below centrum mold, tension mechanism passes through tensioner control
Device processed is mounted in rack.
Preferably, the mounting bracket that the lifting and tilt adjustment device include elevating lever and be fixed on elevating lever, installation
Adjustment for angle of inclination is connected on frame, motor is mounted in adjustment for angle of inclination.
Preferably, the adjustment for angle of inclination includes fixed frame and crane, the axial direction of fixed frame and crane along motor
Arrangement setting, one end of motor is mounted in fixed frame, the other end is mounted in crane.
Preferably, the elevating lever is threaded rod, and the first nut is fixed in the upper end of rack, or opens up in rack the
One internal thread, threaded rod are fitted in the first nut or the first internal thread.
Preferably, two or more guide posts are also set up in the rack, fixed guide cylinder on mounting bracket, guide cylinder suit
In guide post.
Preferably, the benchmark reference plate is mounted on mounting bracket.
Preferably, the tension mechanism includes elastic cylinder, and the inner cavity of elastic cylinder is equipped with conical cavity, is equipped in conical cavity
Centrum block, tensioner control device is connected on centrum block, and tensioner control device can make centrum block generate opposite axis with elastic cylinder
To movement.
Preferably, the tensioner control device includes the connecting tube being fixed on the rack, and centrum is fixed in one end of connecting tube
Block, connecting tube is interior to be arranged push-pull rod, axial movement of the push-pull rod energy band dynamic elasticity cylinder along centrum block.
Preferably, two or more cutting seams are opened up on the side wall of the elastic cylinder, cutting seam divides elastic cylinder
At cylinder block, cylinder block is connect with two adjacent cylinder blocks successively by the first connecting pin and second connection end, the first connecting pin
It is staggered with second connection end.
Preferably, the push-pull rod is the second threaded rod, fixes the second nut in rack, or second is opened up in rack
Internal thread, the second threaded rod are fitted in the second nut or the second internal thread.
Compared with prior art, the beneficial effects of the invention are as follows：
1, the present invention can be by lifting and tilt adjustment device come the height and gradient of adjustment cone grinding tool, and by level
The benchmark reference plate of placement can accurately measure the angle of inclination of centrum grinding tool outer wall as reference, make centrum grinding tool outer wall
Gradient reaches angle to be required, and tension mechanism carrys out tensioner and fixes tube end portion, to realize that the automatic grinding core of tube body adds
Work.
2, due to the mounting bracket for being provided with elevating lever in lifting and tilt adjustment device and being fixed on elevating lever, mounting bracket
Upper connection adjustment for angle of inclination, motor are mounted in adjustment for angle of inclination so that elevating lever drives adjustment for angle of inclination to rise together
Drop, under the premise of not changing cone grinding tool outer wall gradient, adjust centrum grinding tool between pipe fitting at a distance from, facilitate the peace of pipe fitting
Dress and dismounting.
3, since adjustment for angle of inclination includes fixed frame and crane, fixed frame and crane are set along the axial arranging of motor
It sets, one end of motor is mounted in fixed frame, the other end is mounted in crane, can only be grown by changing the elongation of crane
Degree achieves that the adjustment of cone grinding tool gradient, easy to operation.
4, since elevating lever selects threaded rod, the first nut is fixed in the upper end of rack, or first is opened up in rack
Internal thread, threaded rod are fitted in the first nut or the first internal thread, convenient for the stroke of control elevating lever, and can be with hand
It is dynamic to complete, save the consumption of required power source.
5, due to also setting up two or more guide posts in rack, fixed guide cylinder on mounting bracket, guide cylinder, which is sleeved on, leads
To on column, the lifting direction of mounting bracket is constrained, and ensure that the variable quantity that not will produce other directions during lifting.
6, since benchmark reference plate is mounted on mounting bracket so that benchmark reference plate lifts together in company with mounting bracket, can be with
Reduce benchmark reference plate between cone grinding tool outer wall at a distance from, be conducive to the two between angle measurement, so as to accurately control cone
The gradient of body grinding tool outer wall.
7, the structure of centrum block is equipped in elastic cylinder due to tension mechanism selection, can be changed by tensioner control device
Relative position of the centrum block in elastic cylinder conical cavity so that elastic cylinder generates radial deformation, to which expansion sleeve is mounted in bullet
Pipe fitting on property cylinder, convenient for pipe fitting pick and place and fixed operation.
8, since the cutting for opening up two or more on the side wall of elastic cylinder is stitched so that divided cylinder block was both connected as
One, and the space that elastic cylinder generates radial deformation is increased, the pipe fitting for being suitable for larger inner diameter range is processed.
9, since push-pull rod selects the second threaded rod, can be existed to change centrum block by the threaded adjusting of the second threaded rod
Relative position in conical cavity can equally be manually operated, and save the consumption of required power source.
10, the configuration of the present invention is simple is compact, more suitable for construction site, and can basis of reference reference plate, accurate cone governor
The gradient of shape grinding tool, consequently facilitating the grinding core degree of control pipe fitting, convenient in industry promoting and applying.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the present invention；
Fig. 2 is the A direction views of Fig. 1；
Fig. 3 is the B direction views of Fig. 2；
Fig. 4 is C-C sectional views in Fig. 3；
Fig. 5 is the three-dimensional structure diagram of elastic cylinder.
It is marked in figure：1, rack；2, the first nut；3, the first threaded rod；4, the first operation handle；5, motor；6, it installs
Frame；7, crane；8, benchmark reference plate；9, cone grinding tool；10, fixed frame；11, the second operation handle；12, connecting tube；13, bullet
Property cylinder；14, cutting seam；15, guide post；16, guide cylinder；17, cylinder block；18, the first connecting pin；19, second connection end；
20, the second threaded rod；21, the second nut；22, centrum block.
Specific implementation mode
Present invention is further described in detail with specific implementation mode below in conjunction with the accompanying drawings.
When the present invention will be in use state, one end far from ground is defined as upper end or top；Correspondingly it will be close to
The one end on ground is defined as lower end or bottom end.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present invention fixes the first nut 2 in the upper end of rack 1, matches in the first nut 2
Filling the first threaded rod 3, the first operation handle 4, lower end fixing and mounting bracket 6 are fixed in the upper end of the first threaded rod 3, and the one of mounting bracket 6
Hold reference for installation reference plate 8, setting fixed frame 10 and crane 7 on mounting bracket 6, one end of motor 5 is mounted in fixed frame 10,
The other end is mounted in crane 7, and fixed frame 10 and crane 7 install cone in the shaft of motor 5 along the axial arranging of motor 5
Body grinding tool 9, centrum grinding tool are located at the lower section of benchmark reference plate 8, elastic cylinder 13 are arranged in the lower section of centrum grinding tool, such as Fig. 5 institutes
Show, two or more cutting seams 14 are opened up on the side wall of elastic cylinder 13, and elastic cylinder 13 is divided into cylinder block by cutting seam 14
17, cylinder block 17 is connect with two adjacent cylinder blocks 17 successively by the first connecting pin 18 and second connection end 19, the first connection
End 18 is staggered with second connection end 19.The inner cavity of elastic cylinder 13 is equipped with conical cavity, and centrum block 22, vertebra are equipped in conical cavity
The second threaded rod 20 is arranged in connecting tube 12 for the connecting tube 12 being fastened on body block 22 in rack 1, and the is fixed in rack 1
Two nuts 21, the second threaded rod 20 are fitted in the second nut 21, and the other end of the second threaded rod 20 fixes the second operation handle
11。
In order to constrain mounting bracket 6 lifting direction and installation stability, two pieces are also set up in rack 1 and is laterally arranged
Guide post 15, fixed guide cylinder 16 on mounting bracket 6, guide cylinder 16 are sleeved in guide post 15.
The course of work of the present invention is as follows：
Pipe fitting to be processed is set on elastic cylinder 13, the second operation handle 11 of rotation makes under the action of the second nut 21
Obtaining the second threaded rod 20 drives elastic cylinder 13 to be moved to the butt end of centrum block 22, and centrum block 22 is constrained by conical cavity so that
Elastic cylinder 13 generates radial deformation, and thicker and tensioner is on the inner wall of pipe fitting, to fix pipe fitting.It is rotated further by the first operation
Handle 4, under the action of the first nut 2, the first threaded rod 3 moves down, drive benchmark reference plate 8 and mounting bracket 6 together under
It moves, when cone grinding tool 9 is close to pipe fitting outer wall, between the outer wall and benchmark reference plate 8 of the apparatus measures pipe fitting of measurement angle
Angle adjusts the length of crane 7 if the size of angle is improper, to change the gradient of centrum grinding tool outer wall, directly
Meet the taper of processing request to the angle between 9 outer wall of outer wall and cone grinding tool of pipe fitting.It is rotated further the first operation handle 4,
Make cone grinding tool 9 move down to be pressed on the outer wall of pipe fitting.
Motor 5 is opened, motor 5 drives cone grinding tool 9 to rotate, and carries out grinding core processing to the outer wall of pipe fitting, and in processing
Process gradually rotates the first operation handle 4, and cone grinding tool 9 is made gradually to move down, and completes to process the grinding core of pipe fitting.Is rotated again
One operation handle 4 so that cone grinding tool 9 moves up, and is detached from the outer wall of pipe fitting；The second operation handle 11 is rotated, elastic cylinder 13 is made
It is moved to the taper end of centrum block 22, elastic cylinder 13 resiles, lose the tensioner effect to pipe fitting inner wall, unloads and processes
Pipe fitting, to complete a pipe fitting process operation.
During above-mentioned grinding core is processed, benchmark reference plate 8 also acts the effect of protective cover, prevents the abrasion dust from spattering.
Above-mentioned tension mechanism can also select other devices that radial deformation is generated by spring or by air, such as
Air spring or air ring etc. are not specifically limited its structure as long as can generate radial deformation realizes tensioner function；Together
Reason, elevating lever and adjustment for angle of inclination are also such.First threaded rod 3 may be mounted at the first nut 2 being fixed in rack 1
Interior, this mode is relatively simple, certainly can also be in rack 1 as long as matched first nut 2 is fixed corresponding position
Corresponding position open up the first internal thread, the first threaded rod 3 is fitted in the first internal thread；The installation of second threaded rod 20
Mode is also such.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But it is every without departing from technical solution of the present invention content, according to the technical essence of the invention to above example institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.
Claims (10)
1. live cone grinding machine that is a kind of compact-sized and can accurately adjusting taper, including rack, it is characterised in that：In the rack
Lifting and tilt adjustment device are installed, motor is installed on lifting and tilt adjustment device, Cone crusher is installed in the shaft of motor
Tool；Horizontally disposed benchmark reference plate is also installed, benchmark reference plate is located at the top of centrum mold, centrum mold lower section in rack
Tension mechanism is set, and tension mechanism is mounted on by tensioner control device in rack.
2. live cone grinding machine that is according to claim 1 compact-sized and can accurately adjusting taper, it is characterised in that：It is described
Lifting and tilt adjustment device include elevating lever and the mounting bracket that is fixed on elevating lever, and tilt adjustment machine is connected on mounting bracket
Structure, motor are mounted in adjustment for angle of inclination.
3. live cone grinding machine that is according to claim 2 compact-sized and can accurately adjusting taper, it is characterised in that：It is described
Adjustment for angle of inclination includes fixed frame and crane, and fixed frame and crane are arranged along the axial arranging of motor, one end of motor
In fixed frame, the other end be mounted on crane in.
4. live cone grinding machine that is according to claim 3 compact-sized and can accurately adjusting taper, it is characterised in that：It is described
Elevating lever is the first threaded rod, fixes the first nut in the upper end of rack, or the first internal thread is opened up in rack, the first spiral shell
Rasp bar is fitted in the first nut or the first internal thread.
5. live cone grinding machine that is according to claim 4 compact-sized and can accurately adjusting taper, it is characterised in that：It is described
Also set up two or more guide posts in rack, fixed guide cylinder on mounting bracket, guide cylinder is sleeved in guide post.
6. according to any live cone grinding machine that is compact-sized and can accurately adjusting taper of claim 2 to 5, feature exists
In：The benchmark reference plate is mounted on mounting bracket.
7. live cone grinding machine that is according to any one of claims 1 to 5 compact-sized and can accurately adjusting taper, feature exist
In：The tension mechanism includes elastic cylinder, and the inner cavity of elastic cylinder is equipped with conical cavity, centrum block, centrum are equipped in conical cavity
Tensioner control device is connected on block, tensioner control device can make centrum block generate axially opposite movement with elastic cylinder.
8. live cone grinding machine that is according to claim 7 compact-sized and can accurately adjusting taper, it is characterised in that：It is described
Tensioner control device includes the connecting tube being fixed on the rack, and one end of connecting tube fixes centrum block, push-and-pull is arranged in connecting tube
Bar, axial movement of the push-pull rod energy band dynamic elasticity cylinder along centrum block.
9. live cone grinding machine that is according to claim 8 compact-sized and can accurately adjusting taper, it is characterised in that：It is described
Two or more cutting seams are opened up on the side wall of elastic cylinder, elastic cylinder is divided into cylinder block, cylinder block to pass through by cutting seam
First connecting pin and second connection end are connect with two adjacent cylinder blocks successively, and the first connecting pin is staggeredly set with second connection end
It sets.
10. live cone grinding machine that is according to claim 9 compact-sized and can accurately adjusting taper, it is characterised in that：Institute
It is the second threaded rod to state push-pull rod, fixes the second nut in rack, or the second internal thread is opened up in rack, the second threaded rod
It is fitted in the second nut or the second internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810764999.5A CN108788955A (en) | 2018-07-12 | 2018-07-12 | Live cone grinding machine that is a kind of compact-sized and can accurately adjusting taper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810764999.5A CN108788955A (en) | 2018-07-12 | 2018-07-12 | Live cone grinding machine that is a kind of compact-sized and can accurately adjusting taper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108788955A true CN108788955A (en) | 2018-11-13 |
Family
ID=64076296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810764999.5A Pending CN108788955A (en) | 2018-07-12 | 2018-07-12 | Live cone grinding machine that is a kind of compact-sized and can accurately adjusting taper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108788955A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109822434A (en) * | 2019-03-29 | 2019-05-31 | 陈均响 | A kind of Portable glass steel conduit electrodynamic type makes cone machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201380408Y (en) * | 2009-03-26 | 2010-01-13 | 大庆汉维长垣高压玻璃钢管道有限公司 | Hand-operated cone grinding machine of fiberglass reinforced plastic pipes |
| CN201419343Y (en) * | 2009-03-11 | 2010-03-10 | 大庆汉维长垣高压玻璃钢管道有限公司 | Large-diameter pipeline cone grinding machine |
| CN105751274A (en) * | 2016-04-25 | 2016-07-13 | 濮阳市金盾密封管材有限公司 | Portable cone grinding machine for high-pressure fiberglass pipe and application method of portable cone grinding machine |
| CN208409401U (en) * | 2018-07-12 | 2019-01-22 | 中材金晶玻纤有限公司 | Live cone grinding machine that is a kind of compact-sized and can accurately adjusting taper |
-
2018
- 2018-07-12 CN CN201810764999.5A patent/CN108788955A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201419343Y (en) * | 2009-03-11 | 2010-03-10 | 大庆汉维长垣高压玻璃钢管道有限公司 | Large-diameter pipeline cone grinding machine |
| CN201380408Y (en) * | 2009-03-26 | 2010-01-13 | 大庆汉维长垣高压玻璃钢管道有限公司 | Hand-operated cone grinding machine of fiberglass reinforced plastic pipes |
| CN105751274A (en) * | 2016-04-25 | 2016-07-13 | 濮阳市金盾密封管材有限公司 | Portable cone grinding machine for high-pressure fiberglass pipe and application method of portable cone grinding machine |
| CN208409401U (en) * | 2018-07-12 | 2019-01-22 | 中材金晶玻纤有限公司 | Live cone grinding machine that is a kind of compact-sized and can accurately adjusting taper |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109822434A (en) * | 2019-03-29 | 2019-05-31 | 陈均响 | A kind of Portable glass steel conduit electrodynamic type makes cone machine |
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