CN206492954U - Self-centering hydraulic pressure chuck based on annular forging piece - Google Patents
Self-centering hydraulic pressure chuck based on annular forging piece Download PDFInfo
- Publication number
- CN206492954U CN206492954U CN201620994230.9U CN201620994230U CN206492954U CN 206492954 U CN206492954 U CN 206492954U CN 201620994230 U CN201620994230 U CN 201620994230U CN 206492954 U CN206492954 U CN 206492954U
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- Prior art keywords
- chuck
- tooth plate
- claw
- teeth groove
- fluid pressure
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- 238000005242 forging Methods 0.000 title claims abstract description 19
- 210000000078 claw Anatomy 0.000 claims abstract description 66
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 230000033001 locomotion Effects 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 239000003921 oil Substances 0.000 claims description 22
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 230000000295 complement effect Effects 0.000 claims description 5
- 239000011796 hollow space material Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 11
- 230000006872 improvement Effects 0.000 description 7
- 230000005611 electricity Effects 0.000 description 4
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 241000826860 Trapezium Species 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Gripping On Spindles (AREA)
Abstract
The utility model discloses a kind of self-centering hydraulic pressure chuck based on annular forging piece, the oild chuck includes chuck, some tooth plates angularly extended outward centered on chuck, the base of fixed tooth plate and chuck, fluid pressure drive device on chuck, some claws on tooth plate, and the transmission device for being connected with fluid pressure drive device and driving tooth plate to move, the transmission device includes the guiding trestle being connected with fluid pressure drive device, and the lever boosting mechanism of connection guiding trestle and tooth plate, guiding trestle is connected with fluid pressure drive device for the up and down motion of fluid pressure drive device to be changed into horizontal axis motion, and driving force is amplified by lever boosting mechanism, to control the axial movement of tooth plate and claw.The utility model has the advantages that compact conformation, easy to maintenance, clamping range are big, easy to adjust, chucking power is adjustable.
Description
Technical field
The utility model belongs to annular forging piece technical field, and in particular to a kind of self-centering hydraulic pressure card based on annular forging piece
Disk.
Background technology
International community is to the concern more and more higher of environmental protection in recent years, and thermal power generation will be gradually by hydroelectric generation, the sun
It can generate electricity, nuclear energy power generation and wind-power electricity generation are replaced, present wind-power electricity generation project is just in industrialization, scale.Wind-power electricity generation
On floating bearing as a kind of annular forging piece, also with industrialization, scale.
But the annular forging piece of such as floating bearing etc in process people to operating efficiency and crudy
It is required that also more and more higher, has gradually adopted oild chuck to replace hand chuck, to improve operating efficiency, but in oild chuck
In exist workpiece centre be difficult it is coaxial with main shaft rotation center, the adjustment of each Clamping Center all must by from car claw come real
It is existing, it is very inconvenient, also have when cutting force is larger, clamping jaw chucking power not enough, causes waste product or even occurs accident, clamping jaw chucking power
When excessive, workpiece can be caused to deform.
Therefore, it is necessary to provide a kind of self-centering hydraulic pressure chuck based on annular forging piece in view of the above problems.
Utility model content
The purpose of this utility model is to provide a kind of self-centering hydraulic pressure chuck based on annular forging piece, to improve hydraulic pressure card
The operating efficiency of disk and the crudy of annular forging piece.
To achieve these goals, the technical scheme that the utility model embodiment is provided is as follows：
A kind of self-centering hydraulic pressure chuck based on annular forging piece, the oild chuck includes chuck, centered on chuck etc.
The base of some tooth plates, fixed tooth plate and chuck that angle is extended outward, the fluid pressure drive device on chuck, located at tooth
Some claws on plate and the transmission device for being connected with fluid pressure drive device and driving tooth plate to move, the transmission device bag
Include the guiding trestle being connected with fluid pressure drive device and the lever boosting mechanism for being connected guiding trestle and tooth plate, guiding trestle
It is connected with fluid pressure drive device for the up and down motion of fluid pressure drive device to be changed into horizontal axis motion, and is increased by lever
Force mechanisms are amplified to driving force, to control the axial movement of tooth plate and claw.
As further improvement of the utility model, the fluid pressure drive device includes the oil cylinder positioned at chuck central bottom
And the piston positioned at oil cylinder top, the hollow space by hydraulic oil cylinder driving piston in chuck moves up and down, and is filled by being driven
Put the axial movement that the up and down motion of piston is converted into tooth plate and claw.
As further improvement of the utility model, the tooth plate upper surface is evenly distributed with some first teeth groove, claw
Lower surface be correspondingly provided with the second teeth groove being meshed with the first teeth groove, the shape of the second teeth groove and the shape of the first teeth groove are mutual
Mend, pass through engaging so that claw is fixedly installed on tooth plate for the first teeth groove and the second teeth groove.
As further improvement of the utility model, the claw include being fixedly installed in master jaw on tooth plate and
The first claw and the second claw on master jaw are fixedly installed in, the first claw is located at one end of neighbouring chuck, the second claw position
In one end away from chuck.
As further improvement of the utility model, the oild chuck includes：
First state, during hydraulic oil cylinder driving piston upwards, guiding trestle drives tooth plate along card with lever boosting mechanism
The axis of disk is protruding, and the second clamping jaw props up workpiece inner ring；
Second state, when hydraulic oil cylinder driving piston is moved downward, guiding trestle drives tooth plate along card with lever boosting mechanism
The axis of disk clamps workpiece outer ring to contract, the first clamping jaw.
As further improvement of the utility model, under the first state, the chucking power of the second clamping jaw is：
FFolder=FTop(L1/L2) * h, FTop=PA=P* (D/2)2；
Wherein, P is the hydraulic fluid pressure of oil cylinder, and A is effective compression area, and D is cylinder diameter, L1、L2Respectively lever increases
Two brachiums in force mechanisms, h is transmission efficiency.
As further improvement of the utility model, under second state, the chucking power of the first clamping jaw is：
FFolder=FDraw(L1/L2) * h, FDraw=PA=P* ((D/2)2-(d/2)2)；
Wherein, P is the hydraulic fluid pressure of oil cylinder, and A is effective compression area, and D is cylinder diameter, and d is the piston in piston
Shank diameter, L1、L2Two brachiums respectively in lever boosting mechanism, h is transmission efficiency.
As further improvement of the utility model, the rectangle that the section of first teeth groove is equally arranged, first
The rectangle that the section of teeth groove is also equally arranged, the shape of the second teeth groove and the shape of the first teeth groove are complementary.
The beneficial effects of the utility model are：
Self-centering hydraulic pressure chuck clamping stroke and chucking power are larger, and work piece hoisting puts to the rear avoid the need in manually adjusting
The heart, self-centering clamping workpiece can be realized by oild chuck, and the big of clamping jaw chucking power can be changed by adjusting input hydraulic pressure oil pressure
It is small, have the advantages that compact conformation, easy to maintenance, clamping range are big, easy to adjust, chucking power is adjustable.
Brief description of the drawings
Fig. 1 is the structural representation of oild chuck in the utility model first embodiment；
Fig. 2 is the planar structure schematic diagram of chuck and tooth plate in the utility model first embodiment；
Fig. 3 is the dimensional structure diagram of chuck and tooth plate in the utility model second embodiment；
Fig. 4 is the transmission principle sectional view of chuck and tooth plate in the utility model second embodiment；
Fig. 5 is the dimensional structure diagram of chuck in the utility model second embodiment；
Fig. 6 is the configuration schematic diagram of chuck and tooth plate in the utility model second embodiment；
Fig. 7 is another visual angle configuration schematic diagram of chuck and tooth plate in the utility model second embodiment；
Fig. 8 is the mounting structure schematic diagram of tooth plate in the utility model second embodiment；
Fig. 9 is the partial structural diagram of tooth plate in the utility model second embodiment；
Figure 10 is the mounting structure schematic diagram of tooth plate and master jaw in the utility model second embodiment；
Figure 11 is the planar structure schematic diagram of master jaw in the embodiment of the utility model the 3rd；
Figure 12 is the mounting structure schematic diagram of master jaw and claw in the embodiment of the utility model the 3rd.
Embodiment
The utility model is described in detail below with reference to embodiment shown in the drawings.But these embodiment party
Formula is not intended to limit the utility model, structure that one of ordinary skill in the art is made according to these embodiments, method or
Conversion functionally is all contained in protection domain of the present utility model.
Join shown in Fig. 1, Fig. 2, self-centering hydraulic pressure chuck includes chuck 1, with chuck 1 in the utility model first embodiment
Centered on base 3, the hydraulic pressure on chuck 1 of some tooth plates 2, fixed tooth plate 2 and the chuck 1 that angularly extend outward drive
Dynamic device, some claws 4 on tooth plate 2 and the transmission dress for being connected with fluid pressure drive device and driving tooth plate 2 to move
Put, the structure and working principle of each part of oild chuck is elaborated below.
Tooth plate 2 in present embodiment is correspondingly arranged as six, circumferentially uniform point of six tooth plates 2 with corresponding claw 4
It is distributed in around chuck 1, the angle that correspondence is provided between a claw 4, the adjacent tooth plate 2 of each two on each tooth plate 2 is
60°.Certainly, the tooth plate 2 and claw 4 of other quantity can also be set in other embodiments, however it is not limited to present embodiment
In six, herein no longer one by one citing illustrate.
Set in the middle of chuck 1 in hollow, fluid pressure drive device is installed on the hollow space of chuck 1, specifically, hydraulic-driven
Device includes the oil cylinder 51 and the piston 52 positioned at oil cylinder top positioned at the central bottom of chuck 1, and piston is driven by oil cylinder 51
52 move up and down in the hollow space of chuck 1, and the up and down motion of piston are converted into tooth plate 2 and claw 4 by transmission device
Axial movement.
In present embodiment transmission device include with piston 52 be connected guiding trestle 61 and be connected guiding trestle 61 and
The lever boosting mechanism 62 of tooth plate 2, guiding trestle 61 is connected with piston 52 for the up and down motion of piston 52 to be changed into level
It is axially moved, and driving force is amplified by lever boosting mechanism 62, controls the axial movement of tooth plate 2 and claw 4.
The upper surface of tooth plate 2 in present embodiment is evenly distributed with some first teeth groove 201, the section of the first teeth groove 201
The rectangle equally arranged, accordingly, the lower surface of claw 4 are correspondingly provided with the second teeth groove being meshed with the first teeth groove 201
(not shown), the shape of the second teeth groove and the shape of the first teeth groove 201 are complementary, and the rectangle that its section is also equally arranged leads to
Cross the engaging so that claw 4 is fixedly installed on tooth plate 2 of the first teeth groove and the second teeth groove.
The first card that claw 4 includes the master jaw 41 being fixedly installed on tooth plate 2 and is fixedly installed on master jaw 41
The claw 43 of pawl 42 and second, the first claw 42 is located at one end of neighbouring chuck 1, and the second claw 43 is located remotely from the one of chuck 1
End.
The operation principle of self-centering hydraulic pressure chuck is specially in present embodiment：
When the driving piston 52 of oil cylinder 51 is moved upwards, guiding trestle 61 and lever boosting mechanism 62 drive tooth plate 2 along
The axis of chuck is protruding, and the second clamping jaw 43 props up workpiece inner ring；
When the driving piston 52 of oil cylinder 51 is moved downward, guiding trestle 61 and lever boosting mechanism 62 drive tooth plate 2 along
The axis of chuck clamps workpiece outer ring to contract, the first clamping jaw 42.
The chucking power of six claws 4 is identical and the self-centering that is synchronized with the movement, and work piece hoisting, which is put, to the rear avoids the need for artificial tune
Whole center, can clamping workpiece by six pawl hydraulic self-centerings.
The first clamping jaw 42 or the second clamping jaw can be changed by inputting the hydraulic fluid pressure of oil cylinder 51 in present embodiment by adjusting
The size of 43 chucking powers, be specially：
When the driving piston 52 of oil cylinder 51 is moved upwards, the power output of oil cylinder 51 is：
FTop=PA=P* (D/2)2；
Wherein, P is the hydraulic fluid pressure of oil cylinder, and A is effective compression area, and D is cylinder diameter；
Now the chucking power of the second clamping jaw 43 is：
FFolder=FTop(L1/L2)*h；
Wherein, L1、L2Two brachiums respectively in lever boosting mechanism, h is transmission efficiency.
When the driving piston 52 of oil cylinder 51 is moved downward, the power output of oil cylinder 51 is：
FDraw=PA=P* ((D/2)2-(d/2)2)；
Wherein, P is the hydraulic fluid pressure of oil cylinder, and A is effective compression area, and D is cylinder diameter, and d is the piston in piston
Shank diameter；
Now the chucking power of the first clamping jaw 42 is：
FFolder=FDraw(L1/L2)*h；
Wherein, L1、L2Two brachiums respectively in lever boosting mechanism, h is transmission efficiency.
Join shown in Fig. 3-Fig. 7, tooth plate 2 is coordinated by line slideway with chuck 1 in the utility model second embodiment
Install, elaborate below.
Join shown in Fig. 5, the chuck 1 in present embodiment is circumferentially correspondingly arranged on some installation portions 11 and spacer portion 12,
Installation portion 11 is set in inclined-plane, and its vertical direction with chuck 1 is in a certain angle, and the angle preferably may be configured as 30 °~60 °
Between angle, such as in the present embodiment the vertical direction of installation portion 11 and chuck in 45 ° of settings, and the top of installation portion 11 away from
Excentric distance is less than the distance at distance from bottom center, and installation portion 11 is from top to bottom tilted towards outer setting.
Join shown in Fig. 6, Fig. 7, the first fixture 13 is installed with installation portion 11, the first fixture 13 passes through bolt
It is fixedly installed on inclined installation portion 11, the first fixture 13 is provided with solid in the first fixing groove 131, the first fixing groove 131
Dingan County is equipped with the first guide rail 14, and one end of the first guide rail 14 and connector 15 is slidably connected.In addition, the other end of connector 15 with
Tooth plate 2 is fixedly connected.
With reference to shown in Fig. 8, the lower section of tooth plate 2 is installed with some second fixtures 21, the lower section of the second fixture 21
The second fixing groove 211 is provided with along the bearing of trend of tooth plate 2, in addition, being installed with the immediately below tooth plate 2 on base
Two guide rails 22, the both sides of the second guide rail 22 are correspondingly arranged on accepting groove 221, the second fixing groove that the second fixture 21 passes through lower section
211 are mutually clamped with the accepting grooves 221 of the both sides of the second guide rail 22, to realize that the second fixture 21 is slided on the second guide rail 22.
Because tooth plate 2 is fixedly mounted with the second fixture 21, the second guide rail 22 then can as tooth plate 2 rail plate, to drive tooth plate 2
Stretching or contraction.
Ginseng Fig. 4 show the schematic diagram of oild chuck in present embodiment, and piston up-down is driven by oil cylinder 51, living
The up and down motion of piston is changed into the transverse movement of tooth plate 2 by plug, the first guide rail 14 and transmission device (not shown), and then adjusts
The stretching or contraction of whole tooth plate 2, to clamp workpiece to be processed.
Preferably, ginseng Fig. 9 shown in, in present embodiment on tooth plate 2 section of first teeth groove 201 equally arrange it is straight
Angle is trapezoidal to be set, accordingly, and the shape of the second teeth groove of the lower surface of claw 4 and the shape of the first teeth groove 201 are complementary, also in straight
Angle is trapezoidal to be set.Section for right-angled trapezium teeth groove compared with the teeth groove of rectangular cross-section, the distance between teeth groove top increase,
The inclined-plane of right-angled trapezium can play guide effect during assembling, so that the first teeth groove and the second teeth groove are at a fully engaged, it is smart during assembling
Degree requires relatively low, improves efficiency of assembling.
In addition, tooth plate 2 ranked first teeth groove 201 provided with two in present embodiment, and two ranked first and set between teeth groove 201
There are the fitting recess 202 that section is in " convex " type, with reference to shown in Figure 10, the assembling that the bottom of master jaw 41 passes through " convex " type in claw 4
Portion 411 is fixedly mounted with tooth plate 2, and the second teeth groove is located at the both sides of department of assembly 411., first will assembling when tooth plate is installed with claw
Portion 411 is installed into the fitting recess 202 of tooth plate 2 from side, then claw 4 is fixedly mounted with department of assembly 411, you can by claw
4 are fixedly installed on tooth plate 2.
Join shown in Figure 11, Figure 12, in the 3rd embodiment of the present utility model, the top of master jaw 41 is provided with some cards
Provided with four claw installation portions, including two neighbouring chucks on four angles of master jaw 41 in pawl installation portion, present embodiment
The first claw installation portion 401 and the second claw installation portion 402 away from chuck, the first claw 42 is fixedly installed in first respectively
In claw installation portion 401, the second claw 43 is fixedly installed in the second claw installation portion 402 respectively.
Specifically, in the present embodiment, the edge of the master jaw 41 between two the first claw installation portions 401 is arc
Face, the first claw 42 is being cambered surface towards the one side of chuck, when the first claw 42 is installed in the first claw installation portion 401,
Cambered surface in the cambered surface of first claw 42, master jaw 41 can be bonded to each other with the rounded outer surface of annular forging piece, to ensure
One claw 42 can have sufficiently large chucking power.
In addition, the second claw 43 is cambered surface in the one side of dorsad chuck, installed when the second claw 43 is installed on the second claw
When in portion 402, the cambered surface of the second claw 43 can be bonded to each other with the rounded internal surface of annular forging piece, to ensure the second claw 43
There can be sufficiently large chucking power.
Further, the corner of the first claw installation portion 401 is provided with the first circular chamfering in the present embodiment
4011, the corner of the second claw installation portion 402 is fallen provided with the second circular chamfering 4021 by the first chamfering 4011 and second
The setting at angle 4021, can make the first claw 42 or the corner of the second claw 43 have appropriate displacement space, to ensure the first card
The cambered surface and the inner surface of workpiece of the claw 43 of pawl 42 or second or outer surface are brought into close contact, it is ensured that the steadiness of claw clamping.
It should be understood that, although the present specification is described in terms of embodiments, but not each embodiment only includes one
Individual independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art will should say
Bright book is as an entirety, and the technical scheme in each embodiment may also be suitably combined to form those skilled in the art can
With the other embodiment of understanding.
The a series of tool described in detail only for feasibility embodiment of the present utility model of those listed above
Body illustrates that they are simultaneously not used to limit protection domain of the present utility model, all to be made without departing from the utility model skill spirit
Equivalent implementations or change should be included within protection domain of the present utility model.
Claims (6)
1. a kind of self-centering hydraulic pressure chuck based on annular forging piece, it is characterised in that the oild chuck includes chuck, with chuck
Centered on angularly extend outward some tooth plates, fixed tooth plate and chuck base, on chuck hydraulic-driven dress
Put, some claws on tooth plate and be connected with fluid pressure drive device and drive tooth plate move transmission device, the biography
Dynamic device includes the guiding trestle being connected with fluid pressure drive device and the lever boosting mechanism for being connected guiding trestle and tooth plate,
Guiding trestle is connected with fluid pressure drive device for the up and down motion of fluid pressure drive device to be changed into horizontal axis motion, and leads to
Cross lever boosting mechanism to be amplified driving force, to control the axial movement of tooth plate and claw.
2. the self-centering hydraulic pressure chuck according to claim 1 based on annular forging piece, it is characterised in that the hydraulic-driven
Device includes the oil cylinder and the piston positioned at oil cylinder top positioned at chuck central bottom, by hydraulic oil cylinder driving piston in chuck
Hollow space is moved up and down, and the up and down motion of piston is converted into by transmission device the axial movement of tooth plate and claw.
3. the self-centering hydraulic pressure chuck according to claim 1 based on annular forging piece, it is characterised in that the tooth plate upper table
Face is evenly distributed with some first teeth groove, and the lower surface of claw is correspondingly provided with the second teeth groove being meshed with the first teeth groove, second
The shape of the shape of teeth groove and the first teeth groove is complementary, passes through engaging so that claw to be fixedly installed in for the first teeth groove and the second teeth groove
On tooth plate, the claw includes the master jaw being fixedly installed on tooth plate and the first claw being fixedly installed on master jaw
With the second claw, the first claw is located at one end of neighbouring chuck, and the second claw is located remotely from one end of chuck, oild chuck bag
Include：
First state, during hydraulic oil cylinder driving piston upwards, guiding trestle drives tooth plate along chuck with lever boosting mechanism
Axis is protruding, and the second clamping jaw props up workpiece inner ring；
Second state, when hydraulic oil cylinder driving piston is moved downward, guiding trestle drives tooth plate along chuck with lever boosting mechanism
Axis clamps workpiece outer ring to contract, the first clamping jaw.
4. the self-centering hydraulic pressure chuck according to claim 3 based on annular forging piece, it is characterised in that the first state
Under, the chucking power of the second clamping jaw is：
FFolder=FTop(L1/L2) * h, FTop=PA=P* (D/2)2；
Wherein, P is the hydraulic fluid pressure of oil cylinder, and A is effective compression area, and D is cylinder diameter, L1、L2Respectively lever booster
Two brachiums in structure, h is transmission efficiency.
5. the self-centering hydraulic pressure chuck according to claim 4 based on annular forging piece, it is characterised in that second state
Under, the chucking power of the first clamping jaw is：
FFolder=FDraw(L1/L2) * h, FDraw=PA=P* ((D/2)2-(d/2)2)；
Wherein, P is the hydraulic fluid pressure of oil cylinder, and A is effective compression area, and D is cylinder diameter, and d is that the piston rod in piston is straight
Footpath, L1、L2Two brachiums respectively in lever boosting mechanism, h is transmission efficiency.
6. the self-centering hydraulic pressure chuck according to claim 3 based on annular forging piece, it is characterised in that first teeth groove
The rectangle that equally arranges of section, the rectangle that the section of the first teeth groove is also equally arranged, the shape of the second teeth groove with
The shape of first teeth groove is complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620994230.9U CN206492954U (en) | 2016-08-30 | 2016-08-30 | Self-centering hydraulic pressure chuck based on annular forging piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620994230.9U CN206492954U (en) | 2016-08-30 | 2016-08-30 | Self-centering hydraulic pressure chuck based on annular forging piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206492954U true CN206492954U (en) | 2017-09-15 |
Family
ID=59800736
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620994230.9U Expired - Fee Related CN206492954U (en) | 2016-08-30 | 2016-08-30 | Self-centering hydraulic pressure chuck based on annular forging piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206492954U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106238763A (en) * | 2016-08-30 | 2016-12-21 | 江苏荣程锻造股份有限公司 | Self-centering hydraulic pressure chuck based on annular forging piece |
-
2016
- 2016-08-30 CN CN201620994230.9U patent/CN206492954U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106238763A (en) * | 2016-08-30 | 2016-12-21 | 江苏荣程锻造股份有限公司 | Self-centering hydraulic pressure chuck based on annular forging piece |
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Granted publication date: 20170915 Termination date: 20200830 |