CN208534485U - Hob fixing device and hob measurement device - Google Patents
Hob fixing device and hob measurement device Download PDFInfo
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- CN208534485U CN208534485U CN201821032792.0U CN201821032792U CN208534485U CN 208534485 U CN208534485 U CN 208534485U CN 201821032792 U CN201821032792 U CN 201821032792U CN 208534485 U CN208534485 U CN 208534485U
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- knife rest
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Abstract
The utility model relates to a kind of Hob fixing device and hob measurement devices.Hob fixing device includes: fixing seat, including fixed part and the shaft connecting with fixed part；Cutter holder assembly, more than two knife rests of the cutter shaft setting of the hobboing cutter including corresponding different model, more than two knife rests are replaceably mounted in fixed part, and each knife rest respectively with fixed part detachable connection；Each knife rest includes integrally formed plug division and socket part, the plug division of each knife rest is coupled with fixed part, the socket part of each knife rest is different, the cutter shaft of the hobboing cutter for accommodating different model, so that the cutter shaft of the hobboing cutter of corresponding model and shaft are coaxially fixable to fixing seat.Hob fixing device provided by the utility model is capable of fixing various types of hobboing cutters, and assembles, dismantles simply.In addition, hob measurement device use the Hob fixing device, can simply, quickly and accurately replace hobboing cutter, improve the detection efficiency of hobboing cutter.
Description
Technical field
The utility model relates to hobboing cutter detection technique fields, fill more particularly to a kind of Hob fixing device and hob measurement
It sets.
Background technique
Rock tunnel(ling) machine, such as shield machine or hard rock mole (Tunnel Boring Machine, TBM), it is main to use
Tunnel excavation in lithostratigraphy, hobboing cutter are considered as the core component of rock tunnel(ling) machine because of its efficient broken rock performance.It is applying
During work, broken rock power that hobboing cutter is born is big and rock in containing a large amount of abrasion resistant particles etc. due to, cause hobboing cutter
It wears extremely serious, causes to need constantly to shut down replacement cutter in work progress.If the abrasion loss of certain hobboing cutter reaches specified
Value is replaced not in time, can cause the violent increase for the load for closing on hobboing cutter, and then causes the sharp wear for closing on hobboing cutter, is caused not
Necessary economic loss.Hob measurement device can accurately detect hobboing cutter in the abrasion loss of different geological environments, Jin Ergen
Suitable hobboing cutter is selected according to different geological conditions, provides certain reference for hobboing cutter design and project construction.
In order to reduce the testing cost of hobboing cutter, it is various types of to detect to generally use a set of hob abrasion amount detection systems
Hobboing cutter.Since the weight of every kind of hobboing cutter is about 100kg~400kg, if replacement hobboing cutter requires to dismantle hobboing cutter survey completely every time
Device is measured, operation can be more time-consuming, and detection efficiency is lower.
Utility model content
One purpose of the utility model is to provide a kind of Hob fixing device, can fix various types of hobboing cutters,
And assembling, disassembly are simply.
Another purpose of the utility model is to provide a kind of hob measurement device, can be simple, quickly and accurately more
Change hobboing cutter.
On the one hand, the utility model embodiment proposes a kind of Hob fixing device comprising: fixing seat, including fixation
Portion and the shaft being connect with fixed part；Cutter holder assembly, the cutter shaft of the hobboing cutter including corresponding different model are arranged more than two
Knife rest, more than two knife rests are replaceably mounted in fixed part, and each knife rest respectively with fixed part detachable connection；Often
A knife rest includes integrally formed plug division and socket part, and plug division and the fixed part of each knife rest are coupled, each knife rest
Socket part is different, the cutter shaft of the hobboing cutter for accommodating different model, so that the cutter shaft of the hobboing cutter of corresponding model and shaft are coaxially
It is fixed on fixing seat.
According to the one aspect of the utility model embodiment, fixed part has pockets, and more than two knife rests are inserted
Socket part has outer profile compatible with pockets, and plug division can be detachably inserted into pockets, so that plug division
It is coupled with fixed part.
According to the one aspect of the utility model embodiment, fixed part is at least provided in the axial direction of shaft recessed with receiving
First opening of slot connection, so that plug division is detachably inserted into pockets by the first opening.
According to the one aspect of the utility model embodiment, fixed part is provided in the axial direction of shaft to be connected with pockets
The first logical opening, and the second opening being connected to pockets is provided on perpendicular to axial first direction, so that
Plug division is detachably inserted into pockets by the second opening.
According to the one aspect of the utility model embodiment, the socket part of knife rest is set as in the axial direction through cutter shaft extremely
The blind slot or through slot of a few side, so that the cutter shaft of hobboing cutter is contained in socket part.
According to the one aspect of the utility model embodiment, knife rest is further provided in a first direction to be connected with socket part
Logical third opening.
According to the one aspect of the utility model embodiment, Hob fixing device further comprises lid, the grafting of knife rest
Portion is greater than pockets along the depth dimensions of first direction along the height dimension of first direction, and lid is fixed on the second of fixed part
End face where being open, the knife rest for accommodating cutter shaft is packaged in pockets with interference.
According to the one aspect of the utility model embodiment, Hob fixing device further comprises elastic cushion, and elastic cushion is logical
The third opening for crossing knife rest is set between lid and cutter shaft.
According to the one aspect of the utility model embodiment, knife rest is further provided on the end face where third opening
Assembly technology hole.
On the other hand, the utility model embodiment proposes a kind of hob measurement device, including foregoing a pair of of rolling
Knife fixes device, and a pair of of Hob fixing device is set to the axial sides of the hobboing cutter to be measured of corresponding model, and the socket part of knife rest holds
Receive corresponding model hobboing cutter to be measured cutter shaft, the plug division of knife rest is detachably connectable to the fixed part of fixing seat, so that a pair of
The rotating shaft support of Hob fixing device simultaneously drives hobboing cutter to be measured to rotate；And detection device, be set to hobboing cutter to be measured it is radial with
It is detected in hobboing cutter rotation process to be measured.
Hob fixing device provided by the embodiment of the utility model can accommodate the knife of various types of hobboing cutters by being arranged
The cutter holder assembly of axis and Multiple Type can be realized with each of the cutter holder assembly detachably connected fixing seat of knife rest
The fixation of hobboing cutter, and assemble, dismantle simply.In addition, hob measurement device provided by the embodiment of the utility model is used as before
The Hob fixing device only needs replacing the knife rest connecting with the cutter shaft of hobboing cutter when replacing hobboing cutter, without dismantling
All components of fixed hobboing cutter, and the model of knife rest and hobboing cutter corresponds, can simply, quickly and accurately replace hobboing cutter,
Improve the detection efficiency of hobboing cutter.
Detailed description of the invention
The feature, advantage and technical effect of the utility model exemplary embodiment described below with reference to the accompanying drawings.
Fig. 1 is the exploded structure after a kind of Hob fixing device and hobboing cutter assembling provided by the embodiment of the utility model
Schematic diagram；
Fig. 2 is the structural schematic diagram of the cutter holder assembly of multiple knife rests composition in Hob fixing device shown in FIG. 1；
Fig. 3 is the longitudinally cutting structural schematic diagram of Hob fixing device shown in FIG. 1；
Fig. 4 is a kind of structural schematic diagram of hob measurement device provided by the embodiment of the utility model；
Fig. 5 is a kind of flow diagram of hobboing cutter replacing options provided by the embodiment of the utility model.
Wherein:
10- fixing seat；11- fixed part；11a- pockets；11b- first is open；11c- second is open；11d- screw thread
Hole；12- shaft；20- cutter holder assembly；20A, 20B, 20C, 20D, 20E- knife rest；The plug division 21-；The socket part 22-；22a- third
Opening；22b- assembly technology hole；30- lid；31- through-hole；32- fastener；
100- Hob fixing device；200- detection device；H- hobboing cutter；S- cutter shaft.
In the accompanying drawings, identical component uses identical appended drawing reference.The attached drawing is not drawn according to the actual ratio.
Specific embodiment
The feature and exemplary embodiment of the various aspects of the utility model is described more fully below.It is retouched in detail in following
In stating, many details are proposed, in order to provide the comprehensive understanding to the utility model.But for those skilled in the art
It will be apparent that the utility model can be implemented in the case where not needing some details in these details for member.
Below the description of embodiment is used for the purpose of providing by showing the example of the utility model to the more preferable of the utility model
Understanding.In the the accompanying drawings and the following description, at least part of known features and technology are not shown, to avoid to this reality
Unnecessary obscure is caused with novel；Also, for clarity, may be exaggerated the size of part-structure.In addition, hereinafter being retouched
Feature, the structure or characteristic stated can be incorporated in any suitable manner in one or more embodiments.
The noun of locality of middle appearance described below is direction shown in figure, is not to fix to the hobboing cutter of the utility model
The specific structure of device and hob measurement device is defined.In the description of the present invention, it should also be noted that, unless
Separately there is specific regulation and limit, term " installation ", " connection " shall be understood in a broad sense, can also be with for example, it may be fixedly connected
It is detachable connection, or is integrally connected；It can be directly connected, can also be indirectly connected.For the common skill of this field
For art personnel, visual concrete condition understands the concrete meaning of above-mentioned term in the present invention.
The utility model in order to better understand is fixed below with reference to hobboing cutter of the Fig. 1 to Fig. 5 to the utility model embodiment
Device and hob measurement device are described in detail.
Also referring to Fig. 1 and Fig. 2, the utility model embodiment proposes a kind of Hob fixing device 100, comprising: Gu
Reservation 10 and cutter holder assembly 20.
Fixing seat 10 includes fixed part 11 and the shaft 12 connecting with fixed part 11.Shaft 12 can be with 11 one of fixed part
Machine-shaping, or assembled and be integrated by the various modes such as screw, key, welding.
Cutter holder assembly 20 includes more than two knife rests of the cutter shaft S setting of the hobboing cutter H of corresponding different model, such as Fig. 2 institute
Show, cutter holder assembly 20 may include such as, but not limited to five knife rests of 20A, 20B, 20C, 20D, 20E, and more than two knife rests can
Be installed on fixed part 11 to replacement, and each knife rest respectively with 11 detachable connection of fixed part.
Each knife rest includes integrally formed plug division 21 and socket part 22, plug division 21 and the fixed part 11 of each knife rest
It is coupled, the socket part 22 of each knife rest is different, the cutter shaft S of the hobboing cutter H for accommodating different model, so that the rolling of corresponding model
The cutter shaft S and shaft 12 of knife H is coaxially fixable to fixing seat 10.Due to the shape and size of the cutter shaft S of the hobboing cutter H of every kind of model
Difference can be set on each knife rest and mark correspondingly with the model of hobboing cutter in actual use, such as Fig. 2 intermediate slide
A, B, C, D, E are marked on 20A, 20B, 20C, 20D, 20E respectively, prevents knife rest from being falsely dropped in use, leads to the knife of hobboing cutter
Axis assembly and disassembly are difficult.
Hob fixing device 100 provided by the embodiment of the utility model can accommodate various types of hobboing cutter H by setting
Cutter shaft S cutter holder assembly 20 and can with each of the cutter holder assembly 20 detachably connected fixing seat 10 of knife rest 21,
The fixation of Multiple Type hobboing cutter is realized, and assembles, dismantle simply.
The specific structure of each component of Hob fixing device 100 is described in detail with reference to the accompanying drawing.
Referring again to Fig. 1, the fixed part 11 of fixing seat 10 has pockets 11a, the plug division of more than two knife rests
21 have outer profile compatible with pockets 11a, and the cross-sectional shape of outer profile can be the various shapes such as rectangular, circular arc
Shape, pockets 11a are provided accordingly to square groove, arc groove etc., and plug division 21 can be detachably inserted into pockets
11a, so that plug division 21 is coupled with fixed part 11.
Exemplary embodiment according to the present utility model, plug division 21 are the whole of knife rest compatible with pockets 11a
A outer profile.It is understood that the part outer profile of plug division 21 or knife rest compatible with pockets 11a,
Herein with no restriction.
Further, fixed part 11 is at least provided with first be connected to pockets 11a in the axial direction of shaft 12 and opens
Mouth 11b, so that plug division 21 is detachably inserted into pockets 11a by the first opening 11b.
Exemplary embodiment according to the present utility model, it is detachably connected with a knife rest 20A in cutter holder assembly 20
To the fixed part 11 of fixing seat 10, it is preferable that fixed part 11 is provided in the axial direction of shaft 12 to be connected with pockets 11a
The first logical opening 11b, and the second opening being connected to pockets 11a is provided on perpendicular to axial first direction
11c, so that the plug division 21 of knife rest 20A is detachably inserted into pockets 11a by the second opening 11c.
The socket part 22 of knife rest 20A is set as running through the blind slot or through slot of at least one side of cutter shaft S in the axial direction, with
Make the cutter shaft S of hobboing cutter H along axial merging socket part 22.
Exemplary embodiment according to the present utility model, it is preferable that knife rest 20A be further provided in a first direction with
The third opening 22a that socket part 22 is connected to.Cutter shaft S can be open in 22a merging socket part 22 by third.Due to hobboing cutter H compared with
Hobboing cutter H, is usually horizontally arranged by weight, therefore relative to along axial direction in such a way that third is open 22a for cutter shaft merging socket part 22
It is placed in for the mode in socket part 22, it is more convenient for the assembly and disassembly of the cutter shaft S of hobboing cutter H.
Also referring to Fig. 1 and Fig. 3, for the cutter shaft S of easily assembly and disassembly hobboing cutter H, while guaranteeing the dress of hobboing cutter H
With precision, prevent cutter shaft S from rotating relative to fixed seat 10, Hob fixing device 100 provided by the embodiment of the utility model is further
Including lid 30, the plug division 21 of knife rest 20A is greater than pockets 11a along the depth of first direction along the height dimension of first direction
Size is spent, lid 30 is fixed on the end face where the second opening 11c of fixed part 11, will accommodate the knife rest 20A mistake of cutter shaft S
It is packaged in being full of in pockets 11a.For example, plug division 21 along first direction height dimension than pockets 11a along first
The depth dimensions in direction are higher by distance h, and distance h can generally be taken as 0.1~0.5mm.
It is arranged at intervals with multiple through-holes 31 on lid 30, is provided on the end face where the second opening 11c corresponding to through-hole
31 threaded hole 11d, lid 30 sequentially passes through through-hole 31 by fastener 32 and threaded hole 11d is fixed to the second opening 11c
The end face at place.Through-hole 31 is equal with the quantity of threaded hole 11c, such as 4.
Since the plug division 21 of knife rest 20A needs to be interference fitted with pockets 11a, and need often from pockets
Dismounting and change in 11a, it is preferable that the socket part 22 of knife rest 20A can be further arranged on the end face where third opening 22a
There is assembly technology hole 22b.It can be placed in extracting tool in the 22b of assembly technology hole, thus by external force convenient for knife rest 20A is calm
It receives and takes out in groove 11a or knife rest 20A is placed in pockets 11a.
In addition, cutter shaft S is contained between the socket part 22 of knife rest 20A and lid 30, cutter shaft S is in socket part 22 in order to prevent
Inside play, the Hob fixing device 100 that the utility model embodiment proposes can also include elastic cushion (in figure along a first direction
It is not shown), elastic cushion is set between lid 30 and cutter shaft S by the third opening 22a of knife rest 20A.On the one hand, it can prevent
Cutter shaft S influences assembly precision relative to 10 play of fixing seat, and on the other hand, the surface coverd part 30 for being also possible to prevent cutter shaft S is drawn
Wound.
When the cutter shaft S of hobboing cutter H being fixed in Hob fixing device 100 as a result, first the plug division 21 of knife rest 20A is led to
It crosses in the second opening 11c merging pockets 11a, then the cutter shaft S of hobboing cutter H is put into the socket part 22 of knife rest 20A, it will be elastic
Pad is placed on cutter shaft S by third opening 22a, and lid 30 is finally fixed to the second of fixed part 11 by fastener 32 and is opened
End face where mouth 11c.
Refering to Fig. 4, the utility model embodiment also proposed a kind of hob measurement device, comprising: foregoing a pair of
Hob fixing device 100 and detection device 200.
A pair of of Hob fixing device 100 is set to the axial sides of the hobboing cutter H to be measured of corresponding model, the socket part 22 of knife rest
The cutter shaft S of the hobboing cutter H to be measured of corresponding model is accommodated, the plug division 21 of knife rest is detachably connectable to the fixed part of fixing seat 10
11, so that the shaft 12 of a pair of of Hob fixing device 100 supports and hobboing cutter H to be measured is driven to rotate.
Detection device 200 is set to the radial to be detected in hobboing cutter H rotation process to be measured of hobboing cutter H to be measured.
Hob measurement device provided by the embodiment of the utility model uses foregoing Hob fixing device 100, more
The knife rest connecting with the cutter shaft S of hobboing cutter H to be measured is only needed replacing when changing hobboing cutter, all portions without dismantling fixed hobboing cutter
Part, and the model of knife rest and hobboing cutter correspond, can simply, quickly and accurately replace hobboing cutter, improve the detection of hobboing cutter
Efficiency.
It is understood that Hob fixing device provided by the embodiment of the utility model can be applied to any need often
Replace the occasion of different hobboing cutters, and the hob measurement device being not limited in the utility model embodiment.
Refering to Fig. 5, the utility model embodiment also proposed a kind of hobboing cutter for foregoing hob measurement device
Replacing options, comprising:
Step S1: providing one group of cutter holder assembly, and cutter holder assembly includes the N number of of the cutter shaft setting of the hobboing cutter of corresponding different model
Knife rest；
Step S2: choosing i-th of knife rest corresponding with the model of i-th of hobboing cutter to be measured from cutter holder assembly, wherein 1≤i <
N；
Step S3: i-th of knife rest is installed into the fixing seat of hob measurement device, and by the knife of i-th of hobboing cutter to be measured
Axis is installed to i-th of knife rest, to be detected；
Step S4: after detection, i-th of hobboing cutter to be measured and i-th of knife are removed from the fixing seat of hob measurement device
Frame；
Step S5: i+1 knife rest corresponding with the i+1 model of hobboing cutter to be measured is chosen from cutter holder assembly；
Step S6: i+1 knife rest is installed into the fixing seat of hob measurement device, and by i+1 hobboing cutter to be measured
Cutter shaft install to i+1 knife rest, to be detected.
Hobboing cutter replacing options provided by the embodiment of the utility model only need replacing when replacing hobboing cutter with hobboing cutter H's to be measured
The knife rest of cutter shaft S connection, all components without dismantling fixed hobboing cutter, and the model one of knife rest and hobboing cutter is a pair of
Answer, can simply, quickly and accurately replace hobboing cutter, improve the detection efficiency of hobboing cutter.
Although the present utility model has been described by reference to the preferred embodiments, but in the model for not departing from the utility model
In the case where enclosing, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as not depositing
In structural conflict, items technical characteristic mentioned in the various embodiments be can be combined in any way.The utility model
It is not limited to specific embodiment disclosed herein, but is included all technical solutions falling within the scope of the claims.
Claims (10)
1. a kind of Hob fixing device (100) characterized by comprising
Fixing seat (10), including fixed part (11) and the shaft (12) being connect with the fixed part (11)；
Cutter holder assembly (20), cutter shaft (S) setting of the hobboing cutter (H) including corresponding different model more than two knife rests (20A,
20B to 20E), (20A, 20B to 20E) are replaceably mounted in the fixed part (11) described two above knife rests, and each
Knife rest respectively with the fixed part (11) detachable connection；
Each knife rest include be integrally formed plug division (21) and socket part (22), the plug division (21) of each knife rest and
The fixed part (11) is coupled, and the socket part (22) of each knife rest is different, for accommodating the hobboing cutter of different model
(H) cutter shaft (S), so that the cutter shaft (S) of the hobboing cutter (H) of corresponding model and the shaft (12) are coaxially fixable to the fixation
Seat (10).
2. Hob fixing device (100) according to claim 1, which is characterized in that the fixed part (11), which has, to be accommodated
Groove (11a), (plug division (21) of 20A, 20B to 20E) have and the pockets described two above knife rests
(11a) compatible outer profile, the plug division (21) can be detachably inserted into the pockets (11a), so that institute
Plug division (21) is stated to be coupled with the fixed part (11).
3. Hob fixing device (100) according to claim 2, which is characterized in that the fixed part (11) is at least in institute
The first opening (11b) for being provided in the axial direction of shaft (12) and being connected to the pockets (11a) is stated, so that the plug division
(21) pockets (11a) is detachably inserted by first opening (11b).
4. Hob fixing device (100) according to claim 3, which is characterized in that the fixed part (11) perpendicular to
The second opening (11c) being connected to the pockets (11a) is provided on the axial first direction, so that the grafting
Portion (21) is detachably inserted into the pockets (11a) by second opening (11c).
5. Hob fixing device (100) according to claim 4, which is characterized in that the socket part of the knife rest
(22) it is set as extending upward through the blind slot or through slot of at least one side of the cutter shaft (S) in the axis, so that the hobboing cutter
(H) cutter shaft (S) is contained in the socket part (22).
6. Hob fixing device (100) according to claim 5, which is characterized in that the knife rest is in the first direction
On be further provided be connected to the socket part (22) third opening (22a).
7. Hob fixing device (100) according to claim 6, which is characterized in that the Hob fixing device is further
Including lid (30), the plug division (21) of the knife rest is greater than the fixed part along the height dimension of the first direction
(11) for the pockets (11a) along the depth dimensions of the first direction, the lid (30) is fixed on the fixed part
(11) the end face where second opening (11c), the knife rest for accommodating the cutter shaft (S) is packaged in interference
In the pockets (11a).
8. Hob fixing device (100) according to claim 7, which is characterized in that the Hob fixing device is further
Including elastic cushion, the elastic cushion is set to the lid (30) and institute by the third opening (22a) of the knife rest
It states between cutter shaft (S).
9. Hob fixing device (100) according to claim 6, which is characterized in that the knife rest is open in the third
Assembly technology hole (22b) is further provided on end face where (22a).
10. a kind of hob measurement device characterized by comprising
A pair of Hob fixing device (100) as described in any one of claim 1 to 9, the pair of Hob fixing device (100)
The axial sides of the hobboing cutter to be measured (H) of corresponding model are set to, the socket part (22) of the knife rest accommodates corresponding model
The cutter shaft (S) of hobboing cutter (H) to be measured, the plug division (21) of the knife rest are detachably connectable to the institute of the fixing seat (10)
Fixed part (11) are stated, so that the shaft (12) of the pair of Hob fixing device (100) supports and drives the rolling to be measured
Knife (H) rotation；With
Detection device (200), be set to the hobboing cutter to be measured (H) it is radial in hobboing cutter (H) rotation process to be measured into
Row detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821032792.0U CN208534485U (en) | 2018-07-02 | 2018-07-02 | Hob fixing device and hob measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821032792.0U CN208534485U (en) | 2018-07-02 | 2018-07-02 | Hob fixing device and hob measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208534485U true CN208534485U (en) | 2019-02-22 |
Family
ID=65380793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821032792.0U Active CN208534485U (en) | 2018-07-02 | 2018-07-02 | Hob fixing device and hob measurement device |
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| Country | Link |
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| CN (1) | CN208534485U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868804A (en) * | 2018-07-02 | 2018-11-23 | 中国水利水电第工程局有限公司 | Hob fixing device, hob measurement device and hobboing cutter replacing options |
| CN111632703A (en) * | 2020-05-29 | 2020-09-08 | 浙江中烟工业有限责任公司 | Rubbing crusher suitable for hypervelocity cigarette machine |
-
2018
- 2018-07-02 CN CN201821032792.0U patent/CN208534485U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868804A (en) * | 2018-07-02 | 2018-11-23 | 中国水利水电第工程局有限公司 | Hob fixing device, hob measurement device and hobboing cutter replacing options |
| CN111632703A (en) * | 2020-05-29 | 2020-09-08 | 浙江中烟工业有限责任公司 | Rubbing crusher suitable for hypervelocity cigarette machine |
| CN111632703B (en) * | 2020-05-29 | 2021-10-15 | 浙江中烟工业有限责任公司 | Rubbing crusher suitable for hypervelocity cigarette machine |
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