CN206445679U - Mill apparatus in mill bar mechanism and tube wall high speed - Google Patents
Mill apparatus in mill bar mechanism and tube wall high speed Download PDFInfo
- Publication number
- CN206445679U CN206445679U CN201720139089.9U CN201720139089U CN206445679U CN 206445679 U CN206445679 U CN 206445679U CN 201720139089 U CN201720139089 U CN 201720139089U CN 206445679 U CN206445679 U CN 206445679U
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- sleeve
- high speed
- rotating shaft
- spring bearing
- bearing
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Abstract
The utility model is related to inside pipe wall reconditioning technical field, it is a kind of mill bar mechanism and tube wall interior mill apparatus at a high speed, its sleeve for including at least two sections, rotating shaft, high speed self-aligning bearing, flexible positioning sleeve, high speed spring bearing and support tube, adjacent sleeve are fixedly installed togather.The utility model is rational in infrastructure; it is easy to use; by the different parts in rotating shaft, high speed self-aligning bearing is set; the rotating speed of rotating shaft can be effectively improved; by setting flexible positioning sleeve, rigid vibrations, protection sleeve and high speed self-aligning bearing can be slowed down; the service life of bearing is not only increased, rotating speed also improves 2 to 3 times than existing inwall polishing device reconditioning rotating speed.Mill bar is in a fixed position by the cooperation of balancing weight and pressurized cylinder, be operated, pressurized cylinder is easy to adjust pressure, rotating shaft is quickly and easily reached specified location and is positioned, so as to improve ground effect.By setting screw-threaded shaft elevator stop sleeve, the situation fluctuated is reduced, grinding quality is improved.
Description
Technical field
The utility model is related to inside pipe wall reconditioning technical field, is a kind of mill bar mechanism and tube wall interior mill apparatus at a high speed.
Background technology
Cast iron pipe inner wall after cement coated lining, easily forms uneven thickness, the impurity for having high point, adhering to cement residue,
Inwall reconditioning smooth even is needed, and existing inwall polishing device causes reconditioning effect poor because rotating speed is low, and reconditioning process
In due to rotating shaft it is longer, two ends weight is inconsistent, so as to cause emery wheel in rotating shaft to enter after cast iron pipe inner wall because rotating shaft is held
Easily fluctuate, stability of equilibrium is poor, and do not reach good reconditioning effect.There is no good polishing device, most of production
Producer can only lean in process of production manpower tube wall mouthful or people can contact to position hand grinding tool reconditioning, not only work effect
Rate is extremely low, and the big influence workman of flying dust is healthy.
The content of the invention
The utility model provide a kind of mill bar mechanism and tube wall at a high speed in mill apparatus, overcome above-mentioned prior art no
Foot, it, which can effectively solve existing inwall polishing device, causes the problem of reconditioning effect is poor because rotating speed is low.
The utility model causes not reaching good reconditioning during also further solving reconditioning because of stability of equilibrium difference
The problem of effect.
One of the technical solution of the utility model：A kind of mill bar mechanism, including at least two sections sleeve, rotating shaft, high velocity modulation
Heart bearing, flexible positioning sleeve, high speed spring bearing and support tube, adjacent sleeve is fixedly installed togather, provided with extremely in sleeve
Lack two sections of rotating shafts being sequentially fixed together, emery wheel 1, at least four are installed with the rotating shaft on the outside of the sleeve of the leftmost side
The inner ring of individual high speed self-aligning bearing is fixed together with rotating shaft, and outer ring and the sleeve of at least four high speed self-aligning bearings are fixed on one
Rise, the right-hand member of rightmost side sleeve is installed with support tube, and the right-hand member of rotating shaft is through support tube and on the outside of support tube, in branch
The high speed aligning that outer ring and support tube are fixed together and inner ring is fixed together with rotating shaft is respectively equipped with the inside of the two ends for supportting cylinder
Bearing, flexible positioning sleeve is installed between every section of sleeve and rotating shaft by high speed spring bearing.
Following proposal is the preferred scheme of one of the technical solution of the utility model：
Above-mentioned flexible positioning sleeve includes interior flexible positioning sleeve and outer flexible positioning sleeve, and rotating shaft is fixedly mounted on spring bearing
In inner ring, outer flexible positioning sleeve is installed between the outer ring of spring bearing and sleeve, being mounted in spring bearing both sides can be right
The spacing interior flexible positioning sleeve of high speed spring bearing.
Above-mentioned sleeve includes left sleeve, branch sleeve and right sleeve；Rotating shaft turns including left section of rotating shaft, stage casing rotating shaft and right section
Axle；Spring bearing is included on the outside of the first spring bearing and the second spring bearing, the left end of branch sleeve and in the right-hand member of left sleeve
Side, which is threadably secured, to be installed together, and installation is threadably secured on the outside of the right-hand member of branch sleeve and on the inside of the left end of right sleeve
Together, the first high speed self-aligning bearing that outer ring is fixed together with left sleeve inwall is installed on the inside of the left end of left sleeve,
First shaft coupling is installed in branch sleeve, be separately installed with the branch sleeve of the first shaft coupling left and right sides outer ring with
The second high speed self-aligning bearing and the 3rd high speed self-aligning bearing that branch sleeve inwall is fixed together, in the right part and branch of right sleeve
Second shaft coupling is installed in the left part for supportting cylinder, outer ring and right sleeve lining are installed in the right sleeve on the left of second shaft coupling
The 4th high speed self-aligning bearing being fixed together, the left end and right-hand member of the support tube on the right side of second shaft coupling are separately installed with outside
The 5th high speed self-aligning bearing and the 6th high speed self-aligning bearing that circle is fixed together with support tube inwall, it is solid in first shaft coupling
Dingan County stretches out left section of rotating shaft of left sleeve equipped with left end, and the left end of left section of rotating shaft is installed with emery wheel, in first shaft coupling and
Stage casing rotating shaft is installed between second shaft coupling, right section turn that right-hand member stretches out support tube is fixed with second shaft coupling
Axle, left section of rotating shaft between the first high speed self-aligning bearing and branch sleeve left end is fixedly mounted on the inner ring of the first spring bearing
In, outer flexible boot is installed, in the first spring bearing and the first high velocity modulation between the outer ring of the first spring bearing and branch sleeve
The spacing interior flexible positioning sleeve of the first spring bearing, stage casing rotating shaft can be fixed by being separately installed between heart bearing and branch sleeve
In the inner ring of the second spring bearing, outer flexible boot is installed between the outer ring of the second spring bearing and right sleeve,
Being separately installed between two spring bearings and first shaft coupling and second shaft coupling can be by the spacing interior flexibility of the second spring bearing
Positioning sleeve.
Above-mentioned first spring bearing and the second spring bearing are at least two, and adjacent first spring bearing and second
Interior flexible positioning sleeve is mounted between support bearing.
Above-mentioned branch sleeve includes a pair has internal thread and externally threaded joint respectively, and two joints are fixedly mounted on one
Rise.
Above-mentioned adjacent sleeve, which is threadably secured, to be installed together.
Above-mentioned sleeve is provided with the lubricating cup communicated with barrel bore.
The two of the technical solution of the utility model：A kind of tube wall at a high speed in mill apparatus, including mill bar mechanism, frame, dolly,
Pivoting support and pressurized cylinder, are provided with the dolly that can be moved along frame left and right horizontal in frame, are fixedly mounted on dolly
There is pivoting support, sleeve is hingedly mounted on pivoting support and can be solid at the top of the left end of sleeve along pivoting support left-right rotation
Surely there is balancing weight, pressurized cylinder below sleeve and corresponding with balancing weight is fixed with dolly, it is fixed on sleeve
The actuating unit of axis of rotation can be driven by being provided with.
Following proposal is two preferred scheme of the technical solution of the utility model：
The lifting body of energy jack-up mill bar mechanism is installed with above-mentioned dolly.
It is provided with the left of above-mentioned frame on screw-threaded shaft elevator, the leading screw of the screw-threaded shaft elevator and is installed with support bar, sleeve
Seat is on support bar.
Above-mentioned to be additionally provided with spray equipment, spray equipment includes shower and magnetic valve, electricity is installed with shower
Magnet valve, is provided with the hole for water spraying corresponding with sleeve on shower.
The utility model is rational in infrastructure, easy to use, sets high speed self-aligning bearing by the different parts in rotating shaft, can have
Effect improves the rotating speed of rotating shaft, by setting flexible positioning sleeve, can slow down rigid vibrations, protection sleeve and high speed self-aligning bearing, no
The service life of bearing is improve only, rotating speed also improves 2 to 3 times than existing inwall polishing device reconditioning rotating speed.Pass through counterweight
The cooperation of block and pressurized cylinder and mill bar is in fixed position, be operated, pressurized cylinder is easy to adjust pressure, make
Rotating shaft can quickly and easily reach specified location and position, so as to improve ground effect.By setting screw-threaded shaft elevator support set
Cylinder, reduces the situation fluctuated, improves grinding quality.
Brief description of the drawings
Fig. 1 amplifies broken section structural representation for the main view of the utility model embodiment 1.
Fig. 2 is the main structure diagram of the utility model embodiment 2.
Fig. 3 is mill bar mechanism and the cooperation principle schematic of pivoting support in the utility model embodiment 2.
Coding in figure is respectively：1 is emery wheel, and 2 be lubricating cup, and 3 be interior flexible positioning sleeve, and 4 be outer flexible positioning sleeve, and 5 are
Left sleeve, 6 be branch sleeve, and 7 be right sleeve, and 8 be right sleeve, and 9 be frame, and 10 be the first high speed self-aligning bearing, and 11 be first
Shaft coupling, 12 be the second high speed self-aligning bearing, and 13 be the 3rd high speed self-aligning bearing, and 14 be second shaft coupling, and 15 be four high velocity modulations
Heart bearing, 16 be the 5th high speed self-aligning bearing, and 17 be the 6th high speed self-aligning bearing, and 18 be left section of rotating shaft, and 19 be stage casing rotating shaft, 20
It is the first spring bearing for right section of rotating shaft, 21,22 be the second spring bearing, and 23 be dolly, and 24 be pivoting support, and 25 be pressurization gas
Cylinder, 26 be screw-threaded shaft elevator, and 27 be balancing weight, and 28 be actuating unit, and 29 be lifting body, and 30 be spray equipment.
Embodiment
Embodiment 1：As shown in Figure 1, the mill bar mechanism includes at least two sections of sleeve, rotating shaft, high speed self-aligning bearing, soft
Property positioning sleeve, high speed spring bearing and support tube 8, adjacent sleeve is fixedly installed togather, in sleeve provided with least two sections according to
The rotating shaft that sequence is fixed together, is installed with emery wheel 1, at least four high velocity modulations in the rotating shaft on the outside of the sleeve of the leftmost side
The inner ring of heart bearing is fixed together with rotating shaft, and the outer ring of at least four high speed self-aligning bearings is fixed together with sleeve, most right
The right-hand member of side sleeve is installed with support tube 8, and the right-hand member of rotating shaft is through support tube 8 and positioned at the outside of support tube 8, in support tube
Outer ring and support tube is respectively equipped with the inside of 8 two ends to be fixed together and high speed aligning axle that inner ring is fixed together with rotating shaft
Hold, flexible positioning sleeve is installed by high speed spring bearing between every section of sleeve and rotating shaft.By in the different portions of rotating shaft
Position sets high speed self-aligning bearing, can effectively improve the rotating speed of rotating shaft, by setting flexible positioning sleeve, can slow down rigid vibrations, protect
Pretective sleeve pipe and high speed self-aligning bearing, not only increase the service life of bearing, and rotating speed also turns than existing inwall polishing device reconditioning
Speed improves 2 to 3 times.
As shown in Figure 1, flexible positioning sleeve includes interior flexible positioning sleeve 3 and outer flexible positioning sleeve 4, and rotating shaft is fixedly mounted on
In the inner ring of spring bearing, outer flexible positioning sleeve 4 is installed between the outer ring of spring bearing and sleeve, it is equal in spring bearing both sides
Be provided with can be spacing to high speed spring bearing interior flexible positioning sleeve 3.It so can further improve and slow down rigidity vibrations and protect
Effect of sleeve and high speed self-aligning bearing.
As shown in Figure 1, preferably, sleeve includes left sleeve 5, branch sleeve 6 and right sleeve 7；Rotating shaft includes
Left section of rotating shaft 18, stage casing rotating shaft 19 and right section of rotating shaft 20；Spring bearing includes the first spring bearing 21 and the second spring bearing 22,
It is threadably secured on the outside of the left end of branch sleeve 6 and on the inside of the right-hand member of left sleeve 5 and is installed together, the right-hand member of branch sleeve 6
Be threadably secured and be installed together on the inside of the left end of outside and right sleeve 7, be provided with the inside of the left end of left sleeve 5 outer ring with
The first high speed self-aligning bearing 10 that the inwall of left sleeve 5 is fixed together, is provided with first shaft coupling 11 in branch sleeve 6,
Be separately installed with that outer ring and the inwall of branch sleeve 6 be fixed together in the branch sleeve 6 of the left and right sides of first shaft coupling 11 the
Two high speed self-aligning bearings 12 and the 3rd high speed self-aligning bearing 13, are provided with the right part of right sleeve 7 and the left part of support tube 8
Two shaft couplings 14, be provided with that outer ring and the right inwall of sleeve 7 be fixed together in the right sleeve 7 in the left side of second shaft coupling 14 the
Four high speed self-aligning bearings 15, outer ring and support are separately installed with the left end and right-hand member of the support tube 8 on the right side of second shaft coupling 14
The 5th high speed self-aligning bearing 16 and the 6th high speed self-aligning bearing 17 that 8 inwalls of cylinder are fixed together, it is solid in first shaft coupling 11
Dingan County stretches out left section of rotating shaft 18 of left sleeve 5 equipped with left end, and the left end of left section of rotating shaft is installed with emery wheel 1, in the first shaft coupling
Stage casing rotating shaft 19 is installed between device 11 and second shaft coupling 14, right-hand member is fixed with second shaft coupling 14 and stretches out support
Right section of rotating shaft 20 of cylinder 8, left section of rotating shaft 18 between the first high speed self-aligning bearing 10 and the left end of branch sleeve 6 is fixedly mounted on the
In the inner ring of one spring bearing 21, outer flexible boot 4 is installed between the outer ring of first spring bearing 21 and branch sleeve 6,
The first spring bearing 21 can be limited by being separately installed between one spring bearing 21 and the first high speed self-aligning bearing 10 and branch sleeve 6
The interior flexible positioning sleeve 3 of position, stage casing rotating shaft 19 is fixedly mounted in the inner ring of the second spring bearing 22, the second spring bearing 22
Outer flexible boot 4 is installed, in the second spring bearing 22 and first shaft coupling 11 and second shaft coupling 14 between outer ring and right sleeve 7
Between be separately installed with can be by the spacing interior flexible positioning sleeve 3 of the second spring bearing 22.It is such rational in infrastructure compact, can more it enter
One step improves the effect for slowing down rigidity vibrations and protection sleeve and high speed self-aligning bearing, and branch sleeve 6 can be using existing known
Twin adapter technology, twin adapter is that the internal thread that two ends are connected through a screw thread is constituted, and is so easily installed and dismantles.
As shown in Figure 1, for the ease of installation and removal, branch sleeve 6 includes a pair has internal thread and outer spiral shell respectively
The joint of line, two joints are fixedly installed togather.
As shown in Figure 1, the first spring bearing 21 and the second spring bearing 22 are at least two, and adjacent first support
Interior flexible positioning sleeve 3 is mounted between the spring bearing 22 of bearing 21 and second.
As shown in Figure 1, it is threadably secured and is installed together between adjacent sleeve, dimension so easy for removal and installation
Shield.
As shown in Figure 1, sleeve is provided with the lubricating cup 2 communicated with barrel bore.By setting lubricating cup 2 can be periodically at a high speed
Self-aligning bearing and rotating shaft are lubricated, and improve its service life.
Embodiment 2：As shown in accompanying drawing 2,3, a kind of tube wall at a high speed in mill apparatus, including mill bar mechanism, frame 9, dolly 23,
Pivoting support 24 and pressurized cylinder 25, are provided with the dolly 23 that can be moved along the left and right horizontal of frame 9, in dolly 23 in frame 9
On be installed with pivoting support 24, sleeve be hingedly mounted on pivoting support 24 and can along the left-right rotation of pivoting support 24,
Balancing weight 27 is fixed with the top of the left end of sleeve, is fixed with dolly 23 below sleeve and corresponding with balancing weight 27
Pressurized cylinder 25, the actuating unit 28 of axis of rotation can be driven by being installed with sleeve.
The mode of the left and right horizontal of dolly 23 movement can use existing rack pinion mode, when resting, balancing weight 27
Due to Action of Gravity Field, the left and right sides of mill bar is in horizontality, when operating, emery wheel 1 is put into pipe fitting, regulation pressurization
The pressure of cylinder, makes its jack-up mill bar, and coordinates with balancing weight and mill bar is in a fixed position, is operated, plus
Air cylinder is easy to adjust pressure, rotating shaft is quickly and easily reached specified location and is positioned, so as to improve ground effect.Power
Transmission device 28 uses existing known technology, and such as high-speed electric expreess locomotive drives pulley drive.
As shown in accompanying drawing 2,3, the lifting body 29 of energy jack-up mill bar mechanism is installed with dolly 23.Lifting body 29
Using existing known technology, the equipment such as hydraulic cylinder.
As shown in accompanying drawing 2,3, the left side of frame 9 is provided with fixed peace on screw-threaded shaft elevator 26, the leading screw of the screw-threaded shaft elevator 26
Equipped with support bar, receiver is on support bar.Because rotating shaft is longer, easily there is the situation fluctuated during work, cause mill
Effect reduction is cut, and screw-threaded shaft elevator 26 has been mainly support and adjustment mill bar mechanism centre-height and cushioning effect, so as to drop
The low situation fluctuated, improves grinding quality.
As shown in accompanying drawing 2,3, spray equipment 30 is additionally provided with, spray equipment includes shower and magnetic valve, on shower
Magnetic valve is installed with, the hole for water spraying corresponding with sleeve is provided with shower.By using cooperatively for spray equipment 30,
The a large amount of dust of high speed reconditioning appearance is solved, while also solving the heating problem during mill bar mechanism high-speed cruising.
Claims (10)
1. a kind of mill bar mechanism, it is characterised in that including at least two sections of sleeve, rotating shaft, high speed self-aligning bearing, flexible positioning sleeve,
High speed spring bearing and support tube, adjacent sleeve are fixedly installed togather, and are sequentially fixedly connected provided with least two sections in sleeve
Rotating shaft together, is installed with emery wheel in the rotating shaft on the outside of the sleeve of the leftmost side, at least four high speed self-aligning bearings it is interior
Circle is fixed together with rotating shaft, and the outer ring of at least four high speed self-aligning bearings is fixed together with sleeve, the right side of rightmost side sleeve
End is installed with support tube, and the right-hand member of rotating shaft divides through support tube and on the outside of support tube on the inside of the two ends of support tube
Not She You outer ring and support tube be fixed together and high speed self-aligning bearing that inner ring is fixed together with rotating shaft, every section of sleeve with
Flexible positioning sleeve is installed by high speed spring bearing between rotating shaft.
2. mill bar mechanism according to claim 1, it is characterised in that flexible positioning sleeve includes interior flexible positioning sleeve and outer soft
Property positioning sleeve, rotating shaft is fixedly mounted in the inner ring of spring bearing, and outer flexibility is provided between the outer ring of spring bearing and sleeve
Positioning sleeve, be mounted in spring bearing both sides can be spacing to high speed spring bearing interior flexible positioning sleeve.
3. mill bar mechanism according to claim 2, it is characterised in that sleeve includes left sleeve, branch sleeve and right sleeve；
Rotating shaft includes left section of rotating shaft, stage casing rotating shaft and right section of rotating shaft；Spring bearing includes the first spring bearing and the second spring bearing, even
Be threadably secured and be installed together on the outside of the left end of female connector cylinder and on the inside of the right-hand member of left sleeve, on the outside of the right-hand member of branch sleeve and
It is threadably secured and is installed together on the inside of the left end of right sleeve, is provided with the inside of the left end of left sleeve in outer ring and left sleeve
The first high speed self-aligning bearing that wall is fixed together, is provided with first shaft coupling, in first shaft coupling or so in branch sleeve
The second high speed self-aligning bearing that outer ring and branch sleeve inwall be fixed together and the are separately installed with the branch sleeve of both sides
Three high speed self-aligning bearings, second shaft coupling is provided with the right part of right sleeve and the left part of support tube, left in second shaft coupling
The 4th high speed self-aligning bearing that outer ring is fixed together with right sleeve lining is installed in the right sleeve of side, it is right in second shaft coupling
The left end and right-hand member of the support tube of side are separately installed with the 5th high speed self-aligning bearing that outer ring is fixed together with support tube inwall
With the 6th high speed self-aligning bearing, the left section of rotating shaft that left end stretches out left sleeve, left section of rotating shaft are installed with first shaft coupling
Left end be installed with emery wheel, stage casing rotating shaft is installed between first shaft coupling and second shaft coupling, second
The right section of rotating shaft that right-hand member stretches out support tube, left section between the first high speed self-aligning bearing and branch sleeve left end are fixed with axle device
Rotating shaft is fixedly mounted in the inner ring of the first spring bearing, is provided between the outer ring of the first spring bearing and branch sleeve outer soft
Property set, being separately installed between the first spring bearing and the first high speed self-aligning bearing and branch sleeve can be by the first spring bearing
Spacing interior flexible positioning sleeve, stage casing rotating shaft is fixedly mounted in the inner ring of the second spring bearing, the outer ring of the second spring bearing
Outer flexible boot is installed between right sleeve, is respectively mounted between the second spring bearing and first shaft coupling and second shaft coupling
Having can be by the spacing interior flexible positioning sleeve of the second spring bearing.
4. mill bar mechanism according to claim 3, it is characterised in that the first spring bearing and the second spring bearing be to
It is few two, and interior flexible positioning sleeve is mounted between adjacent first spring bearing and the second spring bearing.
5. mill bar mechanism according to claim 4, it is characterised in that branch sleeve include respectively having for a pair internal thread and
Externally threaded joint, two joints are fixedly installed togather.
6. the mill bar mechanism according to any one of claim 1 to 5, it is characterised in that adjacent sleeve is threadably secured installation
Together, or/and, sleeve is provided with the lubricating cup that is communicated with barrel bore.
7. a kind of use mill apparatus, its feature in the tube wall high speed of mill bar mechanism as described in claim 1 or 2 or 3 or 4 or 5 or 6
It is to include mill bar mechanism, frame, dolly, pivoting support and pressurized cylinder, being provided with frame can be along frame left and right horizontal
Mobile dolly, is installed with pivoting support on dolly, and sleeve is hingedly mounted on pivoting support and can be along pivoting support
Left-right rotation, balancing weight is fixed with the right-hand member of sleeve, is fixed with dolly below sleeve and corresponding with balancing weight
Pressurized cylinder, the actuating unit of axis of rotation can be driven by being installed with sleeve.
8. mill apparatus in tube wall high speed according to claim 7, it is characterised in that being installed with dolly can jack-up mill
The lifting body of linkage.
9. mill apparatus in tube wall high speed according to claim 8, it is characterised in that screw-threaded shaft elevator is provided with the left of frame, should
Support bar is installed with the leading screw of screw-threaded shaft elevator, receiver is on support bar.
10. mill apparatus in the tube wall high speed according to claim 7 or 8 or 9, it is characterised in that be additionally provided with spray equipment, spray
Shower device includes shower and magnetic valve, and magnetic valve is installed with shower, provided with relative with sleeve on shower
The hole for water spraying answered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720139089.9U CN206445679U (en) | 2017-02-16 | 2017-02-16 | Mill apparatus in mill bar mechanism and tube wall high speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720139089.9U CN206445679U (en) | 2017-02-16 | 2017-02-16 | Mill apparatus in mill bar mechanism and tube wall high speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206445679U true CN206445679U (en) | 2017-08-29 |
Family
ID=59665079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720139089.9U Withdrawn - After Issue CN206445679U (en) | 2017-02-16 | 2017-02-16 | Mill apparatus in mill bar mechanism and tube wall high speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206445679U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106863121A (en) * | 2017-02-16 | 2017-06-20 | 德阳瀚龙科技发展有限公司 | Mill apparatus in mill bar mechanism and tube wall high speed |
| CN110682193A (en) * | 2019-08-31 | 2020-01-14 | 浙江深澳机械工程有限公司 | Internal grinding machine and working method thereof |
-
2017
- 2017-02-16 CN CN201720139089.9U patent/CN206445679U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106863121A (en) * | 2017-02-16 | 2017-06-20 | 德阳瀚龙科技发展有限公司 | Mill apparatus in mill bar mechanism and tube wall high speed |
| CN110682193A (en) * | 2019-08-31 | 2020-01-14 | 浙江深澳机械工程有限公司 | Internal grinding machine and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170829 Effective date of abandoning: 20181204 |
|
| AV01 | Patent right actively abandoned |