CN204603167U - A kind of hydraulic pressure multiway forging device - Google Patents
A kind of hydraulic pressure multiway forging device Download PDFInfo
- Publication number
- CN204603167U CN204603167U CN201520317159.6U CN201520317159U CN204603167U CN 204603167 U CN204603167 U CN 204603167U CN 201520317159 U CN201520317159 U CN 201520317159U CN 204603167 U CN204603167 U CN 204603167U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- oil
- piston
- piston bar
- inner frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Forging (AREA)
Abstract
The utility model provides a kind of hydraulic pressure multiway forging device, comprises bearing plate, rectangular frame and connects four confession oil cylinders of bearing plate and rectangular frame.Rectangular frame comprises outside framework, inner frame and four working cylinders, on the cross central line that four working cylinders are relatively arranged on rectangular frame between two and longitudinal centre line, small bore piston bar and enlarged bore piston bar that each working cylinder comprises cylinder body, is arranged in the piston of cylinder body, lays respectively at described piston two ends, and be positioned at the tup on described enlarged bore piston bar.Comprise cylinder body and the piston being arranged in cylinder body, the small bore piston bar that is positioned at the enlarged bore piston bar above piston and is positioned at below piston for oil cylinder, Oil Guide pipeline is arranged on between the oil supplying hole of oil cylinder and the oilhole of working cylinder.This forging apparatus realizes four tup real-time synchronization motions, and then makes workpiece deformation even, improves production efficiency.Utilize hydraulic pressure power transmission to effectively reduce frictional force and energy loss simultaneously, improve unit efficiency.
Description
Technical field
The utility model relates to metal material processing field, is specifically related to the multiway forging technical field in forging.
Background technology
Along with the requirement of development metal material processing field to FMT technique and product quality of technology is more and more higher.Constantly to the development trend reduced costs, the propelling of high efficiency direction is forging industry, therefore, multiway forging technology is arisen at the historic moment.The generation of multiway forging technology improves production efficiency and stock utilization to a certain extent, and can process the complex part that common die forging cannot complete with this.But along with being on the increase of various types of multidirectional open die forging equipment, the various problems existing for these equipment are also day by day obvious, wherein most distinct issues are that tup is uneven in different directions force, can not reach effectively synchronous, and then cause workpiece deformation uneven, affect forging process quality.
Existing four hammer forging device four tups control respectively, be difficult to accomplish that four tups synchronously apply pressure, the pressure of both direction applies usual life period interval, first the direction of the raw metal effect of being formerly under pressure deforms, another side upwards pressure and does not also apply, and can not form constraint very well to the distortion first occurred; Also there are four hammer forging devices realizing synchronous extruding in prior art, but usually adopt wedge block principle, power source half that the effective depressing force causing it to provide is not enough, and there is larger frictional force, increase energy loss.
Therefore, be out of shape although existing four hammer forging devices realize applying pressure to workpiece along four direction, solve stationary problem and the problem providing larger depressing force well, these problems are all urgently to be resolved hurrily.
Utility model content
For solving the force inequality that existing multiway forging equipment exists, can not be effectively synchronous, the problems such as friction loss energy is large, it is better that the utility model designs a kind of synchronism, can provide the hydraulic pressure multiway forging device of larger depressing force.
The technical scheme that the utility model provides is as follows:
A kind of hydraulic pressure multiway forging device, comprise bearing plate, be positioned at the rectangular frame below described bearing plate and connect four confession oil cylinders of described bearing plate and described rectangular frame, described rectangular frame comprises outside framework, inner frame and connects four working cylinders of described outside framework and described inner frame, on the cross central line that described four working cylinders are relatively separately positioned on described rectangular frame between two and longitudinal centre line
The tup that described each working cylinder comprises cylinder body respectively, be arranged in the piston of cylinder body, be arranged at the small bore piston bar at described piston two ends and enlarged bore piston bar respectively and be arranged on described enlarged bore piston bar;
Describedly eachly comprise cylinder body respectively for oil cylinder and be arranged in the piston of described cylinder body, be arranged at the enlarged bore piston bar above described piston and the small bore piston bar that is arranged at below described piston respectively; And
Described for oil cylinder and described working cylinder one_to_one corresponding, described each each working cylinder corresponding with it for oil cylinder is by Oil Guide pipeline connection, described Oil Guide pipeline is arranged between the described oil supplying hole for oil cylinder and the oilhole of described working cylinder, described each hydraulic oil for oil cylinder is entered and its working cylinder one to one by described Oil Guide pipeline under the effect of described bearing plate simultaneously, and the piston of described four working cylinders drives described tup to carry out work under the effect of oil pressure simultaneously.
Preferably, the described cylinder body for oil cylinder divide into small bore piston bar oil pocket and enlarged bore piston bar oil pocket by its piston, described working cylinder cylinder body divide into small bore piston bar oil pocket and enlarged bore piston bar oil pocket by its piston, the mode of communicating of described Oil Guide pipeline is that the described enlarged bore piston bar oil pocket of oil cylinder that supplies is communicated with the enlarged bore piston bar oil pocket of described working cylinder, and the described small bore piston bar oil pocket of oil cylinder that supplies is communicated with the small bore piston bar oil pocket of described working cylinder.
Preferably, described outside framework comprises the outside framework upper plate, outside framework left plate, outside framework lower plate and the outside framework right plate that are connected successively, and described inner frame comprises the inner frame upper plate, inner frame left plate, inner frame lower plate and the inner frame right plate that are connected successively.
Preferably, described outside framework upper plate is provided with four the first through holes, also four the first through holes are provided with on described inner frame upper plate with on the correspondence position of four the first through holes of described outside framework upper plate, described through hole is used for installing described four cylinder bodies for oil cylinder respectively, the center of circle O of four the first through holes of described inner frame upper plate and four the first through holes of described outside framework upper plate lays respectively at in the center U of the described bearing plate same circumference that is the center of circle, and is distributed in four summits place of a rectangle respectively.
Preferably, the piston area of described working cylinder is greater than the described piston area for oil cylinder.
Preferably, the work area of the piston corresponding to enlarged bore piston bar oil pocket of described working cylinder is identical with the ratio of the work area of the piston corresponding to the small bore piston bar oil pocket for oil cylinder with the work area of the piston corresponding to described working cylinder small bore piston bar oil pocket with the ratio of work area of the piston corresponding to the enlarged bore piston bar oil pocket for oil cylinder, and this ratio is more than or equal to 2.
Preferably, the inner frame upper plate of the outside framework upper plate of described outside framework, outside framework left plate, outside framework lower plate and outside framework right plate and described inner frame, inner frame left plate, inner frame lower plate and inner frame right plate are all provided with second through hole respectively, and the cylinder body of described each working cylinder is inserted into second through hole being arranged in described outside framework and second through hole being positioned at inner frame respectively.
Preferably, the piston rod that the tup of described four working cylinders is arranged in described working cylinder respectively extend on one end of described inner frame, and transversely center line and longitudinal centre line are oppositely arranged between two.
Preferably, described for oil cylinder, adopt the mode of screw bolt and nut to be fixed between described working cylinder and described rectangular frame.
The utility model advantageously, the utility model is without the need to being equipped with hydraulic power system as being made up of the control element such as pumping plant, various valve bodies specially for completing multiway forging, and only the utility model multiway forging device need be installed to can to use between the moved cross beam of common hydraulic press and workbench and achieve four tups and to be synchronized with the movement effect, and then make workpiece deformation even, substantially increase production efficiency; Utilize hydraulic pressure power transmission greatly can reduce relative movement in other similar devices simultaneously and make formed frictional force, decrease energy loss, improve energy utilization rate.The utility model, owing to taking full advantage of the advantage of hydraulic pressure power transmission, can provide larger depressing force than other similar devices.
Accompanying drawing explanation
Fig. 1 is hydraulic pressure multiway forging device front view of the present utility model;
Fig. 2 is hydraulic pressure multiway forging device top view of the present utility model; And
Fig. 3 is the oil circuit connection diagram for oil cylinder and working cylinder in the utility model device.
Detailed description of the invention
The utility model provides a kind of hydraulic pressure multiway forging device 100, comprise rectangular frame 5 and the bearing plate 1 being located thereon portion, the tup 9 that the upper and lower, left and right four direction of rectangular frame 5 is arranged, four working cylinders 7 for driving tup 9 to work respectively, and four the confession oil cylinders 3 being respectively that four working cylinders 7 provide oil pressure.And can be preferably, working cylinder 7 and confession oil cylinder 3 all select dual-rod hydraulic cylinder, four working cylinder specifications are identical, four identical for oil cylinder specification, four working cylinders 7 and four are relation one to one for oil cylinder 3, each is for the corresponding working cylinder of oil cylinder, and provides hydraulic oil for the working cylinder corresponding with it.The diameter of piston rod at the piston two ends of each dual-rod hydraulic cylinder is different.Be further elaborated below in conjunction with accompanying drawing 1-Fig. 3.
It is the front view of the hydraulic pressure multiway forging device 100 be installed between the moved cross beam of common hydraulic press and workbench shown in Fig. 1.Multiway forging device 100 comprises a bearing plate 1, being positioned at top and is positioned at the rectangular frame 5 of below and multiple confession oil cylinder 3 bearing plate 1 and rectangular frame 5 linked together.Bearing plate 5 is connected with the moved cross beam of hydraulic press, rectangular frame 5 is connected with the workbench of hydraulic press, downwards and the upwards action of hydraulic press moved cross beam drives bearing plate 5 corresponding sports, each hydraulic oil for oil cylinder 3 is entered and its working cylinder 7 one to one by Oil Guide pipeline under the effect of bearing plate 5 simultaneously, the piston of four working cylinders 7 drives its tup 9 to carry out work under the effect of oil pressure simultaneously simultaneously, realizes multiway forging.
With reference to figure 1 and Fig. 2, rectangular frame 5 comprises the outside framework 51, inner frame 56 and the multiple working cylinder 7 be arranged between outside framework 51 and inner frame 56 that are set-located.Inner frame 56 and outside framework 51 as a whole, it is welded together by floor and panel etc., illustrated rectangular frame 5 is Welding Structure, but do not limit, in remaining embodiment, also can change the frame that rectangular solid bloom brill hydraulic cylinder installing hole is made into, or directly cast one frame out.
Outside framework 51 is connected in sequence by outside framework upper plate 52, outside framework lower plate 53, outside framework left plate 54 and outside framework right plate 55.Inner frame 56 also has the structure being similar to outside framework 51, comprises the inner frame upper plate 57, inner frame lower plate 58, inner frame left plate 59 and the inner frame right plate 60 that connect successively.As shown in Figure 1, outside framework 51 and all rectangular and each plate of correspondence of inner frame 56 are parallel to each other.Here, bearing plate 1 and piston rod 4 can adopt welding manner, also can adopt other affixed modes.
Working cylinder 7 comprises cylinder body 71, be arranged in the piston rod 8 of cylinder body 71 and be positioned at the tup 9 of piston rod 8 one end, piston rod 8 comprises piston 83 and lays respectively at small bore piston bar 81 and the enlarged bore piston bar 82 at piston 83 two ends, and tup 9 is connected on one end of enlarged bore piston bar 82.According to the difference of held piston rod 8 diameter, cylinder body 71 be divide into small bore piston bar oil pocket and such two oil pockets of enlarged bore piston bar oil pocket by piston 83.Working cylinder 7 is provided with 4 usually, on the cross central line X being separately positioned on rectangular frame 5 and longitudinal centre line Z, namely the specification size being respectively provided with a working cylinder 7, four working cylinders 7 between outside framework 51 and inner frame 56 along the center of upper and lower, left and right four direction is identical.The cylinder body 71 of four working cylinders 7 be inserted into respectively be arranged in outside framework 51 outside framework upper plate 52, outside framework lower plate 53, outside framework left plate 54 and outside framework right plate 55 on the second through hole 59 and the second through hole 591 of being positioned on the inner frame upper plate 57 of inner frame 56, inner frame lower plate 58, inner frame left plate 59 and inner frame right plate 60.4 tups 9 are all arranged in piston rod 8 and extend on one end of inner frame 56, and transversely center line X and longitudinal centre line Z is oppositely arranged between two.
Comprise cylinder body 31 for oil cylinder 3 and be arranged in the piston rod 4 of cylinder body 31, the small bore piston bar 41 that piston rod 4 comprises piston 43, is positioned at the enlarged bore piston bar 42 above piston 43 and is positioned at below piston 43.According to the difference of held piston rod 4 diameter, cylinder body 31 be divide into small bore piston bar oil pocket and such two oil pockets of enlarged bore piston bar oil pocket by piston 43.Usually 4 are provided with for oil cylinder 3.As shown in Figure 2, outside framework upper plate 52 is provided with four the first through holes 61, correspondingly, inner frame upper plate 57 is also provided with four the first through holes 62.The center of circle O of each through hole 61 and through hole 62 is positioned at in the center U of bearing plate 1 same circumference that is the center of circle, and is distributed in respectively on four angles of a rectangle.Four cylinder bodies 31 for oil cylinder 3 are inserted into respectively often to be organized in the first through hole 61 opposing upper and lower and the first through hole 62.Like this, four be centered around between outside framework upper plate 52 and inner frame upper plate 57 working cylinder 7 for oil cylinder 3 around and configure.Working cylinder 7, adopt bolt/nut fixed form or other fixed forms well known in the art between oil cylinder 3 and rectangular frame 5.
As shown in Figure 3, on the upper and lower of cylinder body 31, multiple oil supplying hole 2 is respectively equipped with for oil cylinder 3, working cylinder 7 is provided with the oilhole 6 communicated with small bore piston bar oil pocket and enlarged bore piston bar oil pocket respectively on cylinder body 71, between the oil supplying hole 2 that Oil Guide pipeline 10 is connected to confession oil cylinder 3 and the oilhole 6 of working cylinder 7.The mode of communicating of Oil Guide pipeline 10 is make to be communicated with the enlarged bore piston bar oil pocket of working cylinder 7 for the enlarged bore piston bar oil pocket of oil cylinder 3, is communicated with the small bore piston bar oil pocket of working cylinder 7 for the small bore piston bar oil pocket of oil cylinder 3.Comprising one for during oil cylinder 3 is connected with a group in a working cylinder 7, the work area of the piston 73 of working cylinder 7 is greater than the work area of the piston 43 of confession oil cylinder 3; And, the work area of the piston 73 corresponding to enlarged bore piston bar oil gun of working cylinder 7 is identical with the ratio of the work area of the piston 43 corresponding to the small bore piston bar oil pocket for oil cylinder 3 with the work area of the piston 73 corresponding to working cylinder 7 small bore piston bar oil pocket with the work area ratio of piston 43 corresponding to the enlarged bore piston bar oil pocket for oil cylinder 3, and this ratio is preferably not less than 2:1.The effect that four tups 9 are synchronized with the movement can be achieved like this.
When multiway forging device work of the present utility model, bearing plate 5 is affixed with the moved cross beam of common hydraulic press, rectangular frame and workbench affixed, the pressing action of hydraulic press moved cross beam drives bearing plate 5 to move downward, bearing plate 5 and then drive four supply the piston rods 4 of oil cylinder 3 to press down, now, each small bore piston bar oil pocket by the oil supplying hole 2 that is positioned at cylinder body 31 bottom, the fluid of its small bore piston bar oil pocket being entered relevant work cylinder 7 for oil cylinder 3 by Oil Guide pipeline 10, piston in working cylinder 7 is moved towards workpiece direction under the effect of high-voltage oil liquid, the tup 9 promoting to be positioned at piston rod 8 end completes extruding action.In like manner, when hydraulic press backhaul, the moved cross beam of hydraulic press drives four piston rods 41 for oil cylinder 3 to move upward by bearing plate 5, oil cylinder 3 is supplied by the oil supplying hole 2 on cylinder body 31 top, the fluid in its enlarged bore piston bar oil pocket to be entered the enlarged bore piston bar oil pocket of relevant work cylinder 7 by Oil Guide pipeline 10, the pressure reduction of piston both sides fluid provides enough reverberation matrix method for tup 9, completes the backhaul action of tup 9.
Last it is noted that above-described each embodiment is only for illustration of the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or to wherein partly or entirely technical characteristic carry out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the protection domain of each embodiment technical scheme of the utility model.
Claims (9)
1. a hydraulic pressure multiway forging device, comprise bearing plate, be positioned at the rectangular frame below described bearing plate and connect four confession oil cylinders of described bearing plate and described rectangular frame, it is characterized in that: described rectangular frame comprises outside framework, inner frame and connects four working cylinders of described outside framework and described inner frame, on the cross central line that described four working cylinders are relatively separately positioned on described rectangular frame between two and longitudinal centre line
The tup that described each working cylinder comprises cylinder body respectively, be arranged in the piston of cylinder body, be arranged at the small bore piston bar at described piston two ends and enlarged bore piston bar respectively and be arranged on described enlarged bore piston bar;
Describedly eachly comprise cylinder body respectively for oil cylinder and be arranged in the piston of described cylinder body, be arranged at the enlarged bore piston bar above described piston and the small bore piston bar that is arranged at below described piston respectively; And
Described for oil cylinder and described working cylinder one_to_one corresponding, described each each working cylinder corresponding with it for oil cylinder is by Oil Guide pipeline connection, described Oil Guide pipeline is arranged between the described oil supplying hole for oil cylinder and the oilhole of described working cylinder, described each hydraulic oil for oil cylinder is entered and its working cylinder one to one by described Oil Guide pipeline under the effect of described bearing plate simultaneously, and the piston of described four working cylinders drives described tup to carry out work under the effect of oil pressure simultaneously.
2. hydraulic pressure multiway forging device according to claim 1, it is characterized in that, the described cylinder body for oil cylinder divide into small bore piston bar oil pocket and enlarged bore piston bar oil pocket by its piston, described working cylinder cylinder body divide into small bore piston bar oil pocket and enlarged bore piston bar oil pocket by its piston, the mode of communicating of described Oil Guide pipeline is that the described enlarged bore piston bar oil pocket of oil cylinder that supplies is communicated with the enlarged bore piston bar oil pocket of described working cylinder, and the described small bore piston bar oil pocket of oil cylinder that supplies is communicated with the small bore piston bar oil pocket of described working cylinder.
3. hydraulic pressure multiway forging device according to claim 2, it is characterized in that, described outside framework comprises the outside framework upper plate, outside framework left plate, outside framework lower plate and the outside framework right plate that are connected successively, and described inner frame comprises the inner frame upper plate, inner frame left plate, inner frame lower plate and the inner frame right plate that are connected successively.
4. hydraulic pressure multiway forging device according to claim 3, it is characterized in that, described outside framework upper plate is provided with four the first through holes, also four the first through holes are provided with on described inner frame upper plate with on the correspondence position of four the first through holes of described outside framework upper plate, described through hole is used for installing described four cylinder bodies for oil cylinder respectively, the center of circle O of four the first through holes of described inner frame upper plate and four the first through holes of described outside framework upper plate lays respectively at in the center U of the described bearing plate same circumference that is the center of circle, and be distributed in four summits place of a rectangle respectively.
5. hydraulic pressure multiway forging device according to claim 2, is characterized in that, the piston area of described working cylinder is greater than the described piston area for oil cylinder.
6. hydraulic pressure multiway forging device according to claim 5, it is characterized in that, the work area of the piston corresponding to enlarged bore piston bar oil pocket of described working cylinder is identical with the ratio of the work area of the piston corresponding to the small bore piston bar oil pocket for oil cylinder with the work area of the piston corresponding to described working cylinder small bore piston bar oil pocket with the ratio of work area of the piston corresponding to the enlarged bore piston bar oil pocket for oil cylinder, and this ratio is more than or equal to 2.
7. hydraulic pressure multiway forging device according to claim 4, it is characterized in that: the inner frame upper plate of the outside framework upper plate of described outside framework, outside framework left plate, outside framework lower plate and outside framework right plate and described inner frame, inner frame left plate, inner frame lower plate and inner frame right plate are all provided with second through hole respectively, and the cylinder body of described each working cylinder is inserted into second through hole being arranged in described outside framework and second through hole being positioned at inner frame respectively.
8. hydraulic pressure multiway forging device according to claim 1, it is characterized in that: the piston rod that the tup of described four working cylinders is arranged in described working cylinder respectively extend on one end of described inner frame, and transversely center line and longitudinal centre line are oppositely arranged between two.
9. hydraulic pressure multiway forging device according to claim 1, is characterized in that: described for oil cylinder, adopt the mode of screw bolt and nut to be fixed between described working cylinder and described rectangular frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317159.6U CN204603167U (en) | 2015-05-15 | 2015-05-15 | A kind of hydraulic pressure multiway forging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317159.6U CN204603167U (en) | 2015-05-15 | 2015-05-15 | A kind of hydraulic pressure multiway forging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204603167U true CN204603167U (en) | 2015-09-02 |
Family
ID=53955755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520317159.6U Withdrawn - After Issue CN204603167U (en) | 2015-05-15 | 2015-05-15 | A kind of hydraulic pressure multiway forging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204603167U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104841831A (en) * | 2015-05-15 | 2015-08-19 | 燕山大学 | Hydraulic multi-directional forging device |
| CN111633053A (en) * | 2020-06-10 | 2020-09-08 | 燕山大学 | Multidirectional extrusion strong-deformation die and process thereof |
-
2015
- 2015-05-15 CN CN201520317159.6U patent/CN204603167U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104841831A (en) * | 2015-05-15 | 2015-08-19 | 燕山大学 | Hydraulic multi-directional forging device |
| CN111633053A (en) * | 2020-06-10 | 2020-09-08 | 燕山大学 | Multidirectional extrusion strong-deformation die and process thereof |
| CN111633053B (en) * | 2020-06-10 | 2021-04-06 | 燕山大学 | Multidirectional extrusion strong-deformation die and process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104841831A (en) | Hydraulic multi-directional forging device | |
| CN204239372U (en) | A kind of thread rolling machine hydraulic valve controller | |
| CN204603167U (en) | A kind of hydraulic pressure multiway forging device | |
| CN109910324A (en) | A kind of buckle machine | |
| CN207593317U (en) | The big seam allowance holes at end surface of bell housing and cuttings fixture for processing | |
| CN205926985U (en) | Riveting punch suitable for plate nut | |
| CN103447449B (en) | Be applicable to the mechanism of off-line quick die change of multistage cold former | |
| CN208321717U (en) | A kind of CNC hydraulic press brake with shock-absorbing function | |
| CN202845524U (en) | Pneumatic edge overturning machine | |
| CN106089133B (en) | A kind of oil pipeline centralising device | |
| CN204934283U (en) | A kind of book joint setting machine | |
| CN205112449U (en) | Large -tonnage pillar press | |
| CN209520534U (en) | Air condition compressor reservoir steel adapter tube gets positioning device ready with cylinder assembly | |
| CN205166313U (en) | Portable multiple aligning gear of hydraulic pressure inspection machine | |
| CN205097335U (en) | Quick amalgamation anchor clamps of a plurality of wedge billets | |
| CN208895516U (en) | A kind of device of the Automated assembly for roller | |
| CN208879418U (en) | Mucking machine adjustable shelf crossbeam bending tool | |
| CN203451205U (en) | Multi-station buffering press | |
| CN201008898Y (en) | Heat extruder | |
| CN212634169U (en) | Forging equipment with high forging uniformity | |
| CN204685763U (en) | A kind of fluid pressure type apparatus for bending | |
| CN204546426U (en) | A kind of Pneumatic pressure pin assembly | |
| CN104551779A (en) | End face milling tool for engine cylinder block | |
| CN203536713U (en) | Mould for compressing non-standard cable joint | |
| CN203532402U (en) | High-pressure oil cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150902 Effective date of abandoning: 20161026 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |