CN107477037B - A kind of heavy type aluminium stretching-machine bit synchronous clamping device and method - Google Patents
A kind of heavy type aluminium stretching-machine bit synchronous clamping device and method Download PDFInfo
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- CN107477037B CN107477037B CN201710864233.XA CN201710864233A CN107477037B CN 107477037 B CN107477037 B CN 107477037B CN 201710864233 A CN201710864233 A CN 201710864233A CN 107477037 B CN107477037 B CN 107477037B
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- Prior art keywords
- drive cylinder
- cylinder
- upper jaw
- bit
- jaw
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more servomotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
Abstract
The present invention provides a kind of heavy aluminium stretching-machine bit synchronous clamping device and methods, stretching-machine includes stretching head and the jaw on stretching head, jaw includes upper jaw and lower jaw, including upper jaw drive cylinder, lower jaw drive cylinder, syncmotor and hydraulic system, the cylinder body of the upper jaw drive cylinder is connected with stretching head, piston rod is connected with upper jaw, and the cylinder body of the lower jaw drive cylinder is connected with stretching head, and piston rod is connected with lower jaw.The present invention passes through the integrated application of syncmotor, make-up valve, sequence valve and overflow valve, realizes the synchronous clamping of heavy aluminum profile seven-roll Abramsen machine bit, guarantees that aluminum profile is not easily to fall off when stretching.
Description
Technical field
The invention belongs to technical field of metallurgical equipment, and in particular to a kind of heavy type aluminium stretching-machine bit synchronous clamping
Device and method.
Background technique
The tilting jaw that domestic offline seven-roll Abramsen machine uses at present is before the stretching clamped aluminum profile, generally
That bit acts respectively, thus exist bit clamp aluminum profile length it is different, when stretching, is easy for falling off
Aluminum profile.
Summary of the invention
The purpose of the present invention is overcome the prior art can not bit simultaneously operation clamp profile the technical issues of.
For this purpose, the present invention provides a kind of heavy aluminium stretching-machine bit synchronous clamping device, stretching-machine includes drawing
Extension head and the jaw on stretching head, jaw include upper jaw and lower jaw, including upper jaw drive cylinder, lower jaw drive
Dynamic oil cylinder, syncmotor and hydraulic system, the cylinder body of the upper jaw drive cylinder are connected with stretching head, piston rod and upper jaw
Connection, the cylinder body of the lower jaw drive cylinder are connected with stretching head, and piston rod is connected with lower jaw；
Both the upper jaw drive cylinder and lower jaw drive cylinder oil circuit are in parallel, and the hydraulic system includes clamping up and down
Mouth drive cylinder plunger shaft liquid feed valve, bit drive cylinder plunger shaft tapping valve, bit drive cylinder rod end chamber
Liquid feed valve and bit drive cylinder rod end chamber tapping valve, the bit drive cylinder plunger shaft liquid feed valve, synchronization
Motor outlet, upper jaw drive cylinder and lower jaw drive cylinder parallel connection oil circuit, bit drive cylinder rod end chamber drain
Valve is sequentially communicated forming circuit, the piston cylinder of the piston cylinder of the upper jaw drive cylinder and lower jaw drive cylinder with it is synchronous
The outlet of motor, the bit drive cylinder rod end chamber liquid feed valve, upper jaw drive cylinder and lower jaw driving
Oil cylinder parallel connection oil circuit, syncmotor and bit drive cylinder plunger shaft tapping valve are sequentially communicated forming circuit.
The hydraulic system further includes upper jaw drive cylinder piston rod cylinder sequence valve, set on the oil of upper jaw drive cylinder
It is in parallel with the oil circuit of lower jaw drive cylinder after road.
It is equipped between the piston cylinder of the jaw drive cylinder and the piston cylinder and syncmotor of lower jaw drive cylinder
It is also connected with by pipeline after the piston cylinder end of both make-up valve, the upper jaw drive cylinder and lower jaw drive cylinder is in parallel
Overflow valve.
The upper jaw and lower jaw are tilting jaw, are 20-25 ° with horizontal direction angle.
The upper jaw drive cylinder is two, respectively the first upper jaw drive cylinder and the second upper jaw driving oil
Cylinder is set side by side along upper jaw width direction, and the lower jaw drive cylinder is two, respectively the first lower jaw drive cylinder
With the second lower jaw drive cylinder, it is set side by side along lower jaw width direction.
The clamping face of the upper jaw and lower jaw is the rectangle flank of tooth.
The present invention also provides a kind of heavy aluminium stretching-machine bit synchronous clamping methods, are stretched using heavy aluminium
Machine bit synchronous clamping device, when the aluminium that is stretched is sent to jaw, bit drive cylinder plunger shaft liquid feed valve and
Bit drive cylinder rod end chamber tapping valve is opened, and then the oil sources of hydraulic system passes through bit drive cylinder piston
Chamber liquid feed valve, synchronized motor are averagely allocated to the piston cylinder of upper jaw drive cylinder and the piston of lower jaw drive cylinder
Cylinder, meanwhile, the rod end chamber of upper jaw drive cylinder and the rod end chamber of lower jaw drive cylinder drive oil by bit
The cylinder piston rod cavity tapping valve oil extraction, respectively drives upper jaw and lower jaw 2, synchronizes jaw and be clamped.
Upper jaw drive cylinder piston rod when the aluminium that is stretched is sent to jaw, on upper jaw drive cylinder oil circuit
Cylinder sequence valve is opened, and the self weight for being adjusted to pressure value with upper jaw by oil inlet is equal.
After jaw clamps, stretching-machine starts to stretch, bit drive cylinder plunger shaft liquid feed valve, bit driving oil
The cylinder piston chamber tapping valve, bit oil cylinder piston rod cavity liquid feed valve, bit oil cylinder piston rod cavity tapping valve are turned off,
At this point, the aluminium that is stretched is outside to the active force of jaw, upper jaw drive cylinder and lower jaw drive cylinder are in passive and clamp
State, for the plunger shaft of the two by make-up valve fluid infusion, rod end chamber is by upper jaw drive cylinder piston rod cylinder sequence valve and overflows
Flow valve drain.
The beneficial effects of the present invention are: the present invention is answered by the synthesis of syncmotor, make-up valve, sequence valve and overflow valve
With, realize the synchronous clamping of heavy aluminum profile seven-roll Abramsen machine bit, guarantee stretch when aluminum profile it is not easily to fall off.
It is described in further details below in conjunction with attached drawing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of tilting jaw；
Fig. 2 is tilting jaw motion principle figure.
In figure: 1, upper jaw；2, lower jaw；3, the first upper jaw drive cylinder；4, the second upper jaw drive cylinder；5,
One lower jaw drive cylinder；6, the second lower jaw drive cylinder；7, stretching head；8, bit drive cylinder plunger shaft feed liquor
Valve；9, bit drive cylinder plunger shaft tapping valve；10, bit oil cylinder piston rod cavity liquid feed valve；11, bit oil
The cylinder piston rod cavity tapping valve；12, syncmotor；13, syncmotor control of export valve block；14, make-up valve；15, the first upper jaw
Drive cylinder piston rod cylinder sequence valve；16, the second upper jaw drive cylinder piston rod cylinder sequence valve；17, syncmotor oil return is carried on the back
Pressure valve；18, overflow valve.
Specific embodiment
Embodiment 1:
A kind of heavy aluminium stretching-machine bit synchronous clamping device is present embodiments provided, stretching-machine includes stretching head
7 and the jaw on stretching head 7, jaw includes upper jaw 1 and lower jaw 2, including upper jaw drive cylinder, lower jaw drive
Dynamic oil cylinder, syncmotor 12 and hydraulic system, cylinder body and stretching head 7 connection of the upper jaw drive cylinder, piston rod and upper
Jaw 1 connects, and cylinder body and stretching head 7 connection of the lower jaw drive cylinder, piston rod and lower jaw 2 connect；
Both the upper jaw drive cylinder and lower jaw drive cylinder oil circuit are in parallel, and the hydraulic system includes clamping up and down
Mouth drive cylinder plunger shaft liquid feed valve 8, bit drive cylinder plunger shaft tapping valve 9, bit drive cylinder piston rod
Chamber liquid feed valve and bit drive cylinder rod end chamber tapping valve, it is the bit drive cylinder plunger shaft liquid feed valve 8, same
Walk the outlet of motor 12, upper jaw drive cylinder and lower jaw drive cylinder parallel connection oil circuit, bit drive cylinder rod end chamber
Tapping valve is sequentially communicated forming circuit, the piston cylinder of the piston cylinder of the upper jaw drive cylinder and lower jaw drive cylinder with
The outlet of syncmotor 12, the bit drive cylinder rod end chamber liquid feed valve, upper jaw drive cylinder and lower pincers
Mouth drive cylinder parallel connection oil circuit, syncmotor 12 and bit drive cylinder plunger shaft tapping valve 9 are sequentially communicated forming circuit.
Upper jaw drive cylinder and two control oil cylinders of lower jaw drive cylinder are in parallel, bit drive cylinder plunger shaft
The outlet of liquid feed valve 8 connects 12 import of syncmotor, and the synchronized motor 12 of oil sources is averagely allocated to four oil cylinder piston chambers, on guaranteeing
2 synchronous clamping of jaw 1 and lower jaw.
Embodiment 2:
On the basis of embodiment 1, a kind of heavy aluminium stretching-machine bit synchronous clamping dress is present embodiments provided
It sets, the hydraulic system further includes upper jaw drive cylinder piston rod cylinder sequence valve, on the oil circuit of upper jaw drive cylinder
It is in parallel with the oil circuit of lower jaw drive cylinder later.Upper jaw drive cylinder piston rod cylinder sequence valve is for balancing upper jaw 1
Self weight.
It is all provided between the piston cylinder of the jaw drive cylinder and the piston cylinder of lower jaw drive cylinder and syncmotor 12
There is a make-up valve 14, also passes through pipeline company after the piston cylinder end of both the upper jaw drive cylinder and lower jaw drive cylinder is in parallel
It is connected to overflow valve 18.
The upper jaw 1 and lower jaw 2 are tilting jaw, are 20-25 ° with horizontal direction angle.Jaw tilting
Installation, gravity, frictional force are different to the function and effect of bit 2, cause jaw easily to occur asynchronous.As shown in Figure 1, pincers
The guiding pattern of mouth is V-groove structure.
The clamping face of the upper jaw 1 and lower jaw 2 is the rectangle flank of tooth.The rectangle flank of tooth has anti-slip function.
In the present embodiment, the upper jaw drive cylinder is two, respectively the first upper jaw drive cylinder 3 and second
Upper jaw drive cylinder 4 is set side by side along 1 width direction of upper jaw, the lower jaw drive cylinder be two, respectively first
Lower jaw drive cylinder 5 and the second lower jaw drive cylinder 6, are set side by side along 2 width direction of lower jaw.
As shown in Figure 1, upper jaw drive cylinder piston rod cylinder sequence valve includes the first upper jaw drive cylinder piston rod cylinder
Sequence valve 15 and the second upper jaw drive cylinder piston rod cylinder sequence valve 16, are respectively arranged on the oil circuit of two upper jaw drive cylinders
On.The cylinder body and stretching head 7 of upper jaw drive cylinder are hinged, and piston rod and upper jaw 1 are hinged, the lower jaw drive cylinder
Cylinder body and stretching head 7 are hinged, and piston rod and lower jaw 2 are hinged.The stretcher jaw drive cylinder of different tonnages is of different sizes, shape
At the clamping force of different tonnages.
As shown in Fig. 2, totally four control oil cylinder parallel connections connect for two upper jaw drive cylinders and two lower jaw drive cylinders
It connects, when the aluminium that is stretched is sent to jaw, the first upper jaw drive cylinder piston rod cylinder sequence valve 15 and the driving of the second upper jaw
The pressure of cylinder piston rod cylinder sequence valve 16 is adjusted to desired value, to balance the self weight of upper jaw 1.Bit drive cylinder is living
Chamber liquid feed valve 8, the electrification opening of bit oil cylinder piston rod cavity tapping valve 11 are filled in, hydraulic system oil sources passes through bit and drives
To the plunger shaft of four control oil cylinders, it is oily that rod end chamber passes through bit for oil cylinder piston chamber liquid feed valve 8,12 fuel feeding of syncmotor
11 oil extraction of the cylinder piston rod cavity tapping valve, jaw are clamped.
In the process, the first upper jaw drive cylinder piston rod cylinder sequence valve 15 and the second upper jaw drive cylinder piston
Bar cylinder sequence valve 16 balances the self weight of upper jaw 1 and can increase certain back pressure, makes the piston cavity pressure of four control oil cylinders
Identical, syncmotor 12 keeps four control Flow of Cylinder identical, pressure and flow under the same conditions, four control oil cylinders are same
Step clamps, and realizes that jaw moves synchronously.
In addition, 17 collective effect of syncmotor control of export valve block 13 and syncmotor return oil pressure valve, in jaw oil cylinder
Four the asynchronous of clamping cylinder can be compensated when stroke end, improve net synchronization capability.Bit drive cylinder piston
The effect of the overflow valve 18 of the 2 oil cylinder piston rod cavity of make-up valve 14 and bit of chamber: after jaw clamps, stretching-machine starts to draw
It stretches, bit drive cylinder plunger shaft liquid feed valve 8, bit drive cylinder plunger shaft tapping valve 9, bit oil
The cylinder piston rod cavity liquid feed valve 10, bit oil cylinder piston rod cavity tapping valve 11 are turned off, and be stretched effect of the aluminium to jaw
Power is outside, and jaw oil cylinder is in passive clamped condition, and plunger shaft passes through the first upper jaw by 14 fluid infusion of make-up valve, rod end chamber
Drive cylinder piston rod cylinder sequence valve 15 and the second upper jaw drive cylinder piston rod cylinder sequence valve 16 and 18 drain of overflow valve.
Embodiment 3:
On the basis of previous embodiment, a kind of heavy aluminium stretching-machine bit synchronous clamping is present embodiments provided
Method, when the aluminium that is stretched is sent to jaw, bit drive cylinder plunger shaft liquid feed valve 8 and bit drive cylinder are living
Stopper rod chamber tapping valve is opened, and then the oil sources of hydraulic system passes through bit drive cylinder plunger shaft liquid feed valve 8, synchronized horse
The piston cylinder of the piston cylinder and lower jaw drive cylinder that are averagely allocated to upper jaw drive cylinder up to 12, meanwhile, upper jaw drives
The rod end chamber of dynamic oil cylinder and the rod end chamber of lower jaw drive cylinder pass through bit drive cylinder rod end chamber tapping valve
Oil extraction respectively drives upper jaw 1 and lower jaw 2, synchronizes jaw and is clamped.
Upper jaw drive cylinder piston rod when the aluminium that is stretched is sent to jaw, on upper jaw drive cylinder oil circuit
Cylinder sequence valve is opened, and is adjusted to pressure value by oil inlet equal with the self weight of upper jaw 1.
After jaw clamps, stretching-machine starts to stretch, bit drive cylinder plunger shaft liquid feed valve 8, bit driving
Oil cylinder piston chamber tapping valve 9, bit oil cylinder piston rod cavity liquid feed valve 10, bit oil cylinder piston rod cavity tapping valve 11
It is turned off, at this point, the aluminium that is stretched is outside to the active force of jaw, upper jaw drive cylinder and lower jaw drive cylinder are in quilt
Dynamic clamped condition, for the plunger shaft of the two by 14 fluid infusion of make-up valve, rod end chamber is suitable by upper jaw drive cylinder piston rod cylinder
18 drain of sequence valve and overflow valve.
The part that above embodiments do not specifically describe belongs to the common knowledge and well-known technique of the art, herein
No longer it is described in detail one by one.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.
Claims (3)
1. a kind of heavy type aluminium stretching-machine bit synchronous clamping method, it is characterised in that: the heavy aluminium of this method stretches
Machine bit synchronous clamping device, stretching-machine includes stretching head (7) and the jaw on stretching head (7), jaw include
Upper jaw (1) and lower jaw (2), including upper jaw drive cylinder, lower jaw drive cylinder, syncmotor (12) and hydraulic pressure system
System, cylinder body and stretching head (7) connection of the upper jaw drive cylinder, piston rod and upper jaw (1) connection, the lower jaw drive
The cylinder body of dynamic oil cylinder and stretching head (7) connection, piston rod and lower jaw (2) connection；
Both the upper jaw drive cylinder and lower jaw drive cylinder oil circuit are in parallel, and the hydraulic system includes that bit drives
Dynamic oil cylinder piston chamber liquid feed valve (8), bit drive cylinder plunger shaft tapping valve (9), bit drive cylinder piston rod
Chamber liquid feed valve and bit drive cylinder rod end chamber tapping valve, the bit drive cylinder plunger shaft liquid feed valve (8),
Syncmotor (12) outlet, upper jaw drive cylinder and lower jaw drive cylinder parallel connection oil circuit, bit drive cylinder piston
Rod cavity tapping valve is sequentially communicated forming circuit, the piston cylinder of the upper jaw drive cylinder and the piston cylinder of lower jaw drive cylinder
With the outlet of syncmotor (12), the bit drive cylinder rod end chamber liquid feed valve, upper jaw drive cylinder
Successively connect with lower jaw drive cylinder parallel connection oil circuit, syncmotor (12) and bit drive cylinder plunger shaft tapping valve (9)
Logical forming circuit；
The hydraulic system further includes upper jaw drive cylinder piston rod cylinder sequence valve, on the oil circuit of upper jaw drive cylinder
It is in parallel with the oil circuit of lower jaw drive cylinder later；
It is equipped between the piston cylinder of the jaw drive cylinder and the piston cylinder and syncmotor (12) of lower jaw drive cylinder
Also connected by pipeline after the piston cylinder end of both make-up valve (14), the upper jaw drive cylinder and lower jaw drive cylinder is in parallel
It is connected to overflow valve (18)；
The upper jaw (1) and lower jaw (2) are tilting jaw, are 20-25 ° with horizontal direction angle；
The upper jaw drive cylinder is two, respectively the first upper jaw drive cylinder (3) and the second upper jaw drive cylinder
(4), along upper jaw (1), width direction is set side by side, and the lower jaw drive cylinder is two, the driving of respectively the first lower jaw
Oil cylinder (5) and the second lower jaw drive cylinder (6), along lower jaw (2), width direction is set side by side；
The clamping face of the upper jaw (1) and lower jaw (2) is the rectangle flank of tooth；
When the aluminium that is stretched is sent to jaw, bit drive cylinder plunger shaft liquid feed valve (8) and bit drive cylinder
Rod end chamber tapping valve is opened, and then the oil sources of hydraulic system is by bit drive cylinder plunger shaft liquid feed valve (8), through same
Step motor (12) is averagely allocated to the piston cylinder of upper jaw drive cylinder and the piston cylinder of lower jaw drive cylinder, meanwhile, upper pincers
The rod end chamber of mouth drive cylinder and the rod end chamber of lower jaw drive cylinder pass through bit drive cylinder rod end chamber and arrange
Liquid valve oil extraction respectively drives upper jaw (1) and lower jaw (2), synchronizes jaw and be clamped.
2. a kind of heavy aluminium stretching-machine bit synchronous clamping method according to claim 1, it is characterised in that: when
When the aluminium that is stretched is sent to jaw, the upper jaw drive cylinder piston rod cylinder sequence valve on upper jaw drive cylinder oil circuit is beaten
It opens, is adjusted to pressure value by oil inlet equal with the self weight of upper jaw (1).
3. a kind of heavy aluminium stretching-machine bit synchronous clamping method according to claim 1, it is characterised in that: pincers
After mouth clamps, stretching-machine starts to stretch, bit drive cylinder plunger shaft liquid feed valve (8), bit drive cylinder piston
Chamber tapping valve (9), bit oil cylinder piston rod cavity liquid feed valve (10), bit oil cylinder piston rod cavity tapping valve (11) close
It closes, at this point, the aluminium that is stretched is outside to the active force of jaw, upper jaw drive cylinder and lower jaw drive cylinder are in passive folder
Tight state, for the plunger shaft of the two by make-up valve (14) fluid infusion, rod end chamber passes through upper jaw drive cylinder piston rod cylinder sequence
Valve and overflow valve (18) drain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710864233.XA CN107477037B (en) | 2017-09-22 | 2017-09-22 | A kind of heavy type aluminium stretching-machine bit synchronous clamping device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710864233.XA CN107477037B (en) | 2017-09-22 | 2017-09-22 | A kind of heavy type aluminium stretching-machine bit synchronous clamping device and method |
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| Publication Number | Publication Date |
|---|---|
| CN107477037A CN107477037A (en) | 2017-12-15 |
| CN107477037B true CN107477037B (en) | 2019-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710864233.XA Active CN107477037B (en) | 2017-09-22 | 2017-09-22 | A kind of heavy type aluminium stretching-machine bit synchronous clamping device and method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594239B (en) * | 2020-12-24 | 2022-07-01 | 天津市天锻压力机有限公司 | Hydraulic control system for jaw of skin stretching hydraulic machine |
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|---|---|---|---|---|
| JPS5527570A (en) * | 1978-05-30 | 1980-02-27 | Bos Kalis Westminster | Hydraulic synchronous driving mechanism |
| CN101905242A (en) * | 2010-07-09 | 2010-12-08 | 太原重工股份有限公司 | Roller-lifting proportional and synchronous hydraulic control system |
| CN202673808U (en) * | 2012-07-05 | 2013-01-16 | 中冶赛迪工程技术股份有限公司 | Multi-cylinder diffluence motor synchronous compensation hydraulic system |
| CN103195764A (en) * | 2013-04-01 | 2013-07-10 | 中南大学 | Two-stage bi-directional high-precision hydraulic synchronous control system |
| CN205702168U (en) * | 2016-05-18 | 2016-11-23 | 吕文平 | The inclination clamped-in style clamp of super-huge aluminium section bar seven-roll Abramsen machine |
| CN206092552U (en) * | 2016-09-13 | 2017-04-12 | 福州大学 | Hydraulic circuit of loosing core in step |
-
2017
- 2017-09-22 CN CN201710864233.XA patent/CN107477037B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5527570A (en) * | 1978-05-30 | 1980-02-27 | Bos Kalis Westminster | Hydraulic synchronous driving mechanism |
| CN101905242A (en) * | 2010-07-09 | 2010-12-08 | 太原重工股份有限公司 | Roller-lifting proportional and synchronous hydraulic control system |
| CN202673808U (en) * | 2012-07-05 | 2013-01-16 | 中冶赛迪工程技术股份有限公司 | Multi-cylinder diffluence motor synchronous compensation hydraulic system |
| CN103195764A (en) * | 2013-04-01 | 2013-07-10 | 中南大学 | Two-stage bi-directional high-precision hydraulic synchronous control system |
| CN205702168U (en) * | 2016-05-18 | 2016-11-23 | 吕文平 | The inclination clamped-in style clamp of super-huge aluminium section bar seven-roll Abramsen machine |
| CN206092552U (en) * | 2016-09-13 | 2017-04-12 | 福州大学 | Hydraulic circuit of loosing core in step |
Non-Patent Citations (1)
| Title |
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| 拉伸矫直机夹紧装置及其液压系统的改进;吴伟等;《山西冶金》;20141105;49-51、55 * |
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