CN107442618B - Machining device for special-shaped fishplates - Google Patents
Machining device for special-shaped fishplates Download PDFInfo
- Publication number
- CN107442618B CN107442618B CN201710827883.7A CN201710827883A CN107442618B CN 107442618 B CN107442618 B CN 107442618B CN 201710827883 A CN201710827883 A CN 201710827883A CN 107442618 B CN107442618 B CN 107442618B
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- plate
- limiting
- shaped
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- limiting plate
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Classifications
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- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- 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
- B21D43/003—Positioning devices
Abstract
The invention provides a technical scheme of a processing device of a special-shaped fishplate, wherein a front limiting assembly and a rear limiting assembly for limiting and fixing the V direction of the special-shaped fishplate are respectively arranged at the front part and the rear part of a lower supporting plate, and an upper limiting assembly for limiting and fixing the U direction of the special-shaped fishplate is arranged at the upper part of the lower supporting plate; elastic pieces are respectively arranged on different sides in the front limiting assembly and the rear limiting assembly, and elastic pieces are arranged on one side in the upper limiting assembly. According to the invention, the front limiting assembly, the rear limiting assembly and the upper limiting assembly are adopted to position and compress the special-shaped fishplate to be processed, the elastic pieces are respectively arranged on different sides in the front limiting assembly and the rear limiting assembly, and the elastic piece is arranged on one side in the upper limiting assembly, so that the bidirectional forming of the workpiece can be completed by one-time positioning, the positioning accuracy is high, and the device can be used for mass rapid production.
Description
Technical Field
The invention relates to the technical field of metal processing, in particular to a processing device for a special-shaped fishplate.
Background
The fishplates (rail joint clamping plates) are commonly called rail clamping plates and play a role in connection at the rail joints. The light rail, the heavy rail and the overweight rail are classified. The fishplate is a connecting fastener used for connecting the rails. The special-shaped fishplate is different from a common fishplate, and is used for a rail joint part of a non-homogeneous rail type in a railway track system.
The special-shaped fishplates have the advantages of high number and large specification, are used for connecting different rail types, and the sizes of the special-shaped fishplates need to be correspondingly adjusted, and because of the application specificity of the special-shaped fishplates, the special-shaped fishplates have corresponding technical requirements on the safety of train operation, namely the special-shaped fishplates have good mechanical properties (superior to the steel rails connected with the special-shaped fishplates) and have good performance indexes such as shearing stress resistance, impact stress resistance, fatigue resistance, wear resistance and the like.
The structural form of the special-shaped fishplate is shown in fig. 7, and the special-shaped fishplate is different from the common road clamping plate in bending at the central part, and is divided into longitudinal bending and transverse bending, and the bending amount of the special-shaped fishplate is different according to the butt joint requirement of the rail. The standardized production is restricted, and in order to ensure the consistency and stability of the appearance and structure of the products in the same batch, a transmission local forging method is adopted, and repeated positioning, correction and inspection are often required. It is difficult to control effectively in terms of standardized production management, process and final quality control, etc. This is a disadvantage of the prior art.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a technical scheme of a processing device for the special-shaped fishplates aiming at the defects existing in the prior art.
The scheme is realized by the following technical measures: the processing device of the special-shaped fishplate comprises a main bottom plate, wherein a lower supporting plate matched with the lower surface of the special-shaped fishplate is arranged on the main bottom plate, a front limiting assembly and a rear limiting assembly for limiting and fixing the V direction of the special-shaped fishplate are respectively arranged at the front part and the rear part of the lower supporting plate, and an upper limiting assembly for limiting and fixing the U direction of the special-shaped fishplate is arranged at the upper part of the lower supporting plate; the front limiting component is driven by a first driving mechanism to move along the V direction, the rear limiting component is fixed on the main bottom plate, and the upper limiting component is driven by a second driving mechanism to move along the U direction; elastic pieces are respectively arranged on different sides in the front limiting assembly and the rear limiting assembly, and elastic pieces are arranged on one side in the upper limiting assembly.
According to the invention, a left baffle plate and a right baffle plate are fixed at the front part of the main bottom plate, an oil cylinder fixing plate is fixedly connected between the left baffle plate and the right baffle plate, a hydraulic cylinder is fixedly arranged on the oil cylinder fixing plate, an output shaft of the hydraulic cylinder is fixedly connected with an L-shaped sliding plate, and the L-shaped sliding plate is positioned at the upper part of the main bottom plate.
The invention further improves, the front limiting assembly comprises a front left limiting plate, a core block IV, a rubber mat III, a front right limiting plate and a core block III, wherein the front left limiting plate is fixed on the left side of the front end of the L-shaped sliding plate, the core block IV is fixedly embedded in the front part of the front left limiting plate, the rubber mat III is positioned between the front left limiting plate and the L-shaped sliding plate, the front right limiting plate is arranged on a guide column II in a sliding manner, the guide column II is fixedly arranged on the right side of the front end of the L-shaped sliding plate, a return spring II is sleeved on the guide column II positioned between the front right limiting plate and the L-shaped sliding plate, and the core block III is fixedly embedded in the front part of the front right limiting plate.
According to a further improvement of the invention, the rear limiting assembly comprises a rear left limiting plate, a core block II, a rear right limiting plate, a core block I and a rubber cushion II, wherein the rear left limiting plate is fixed on the main bottom plate, the core block II is embedded and fixed at the rear part of the rear left limiting plate, the rear right limiting plate is arranged on a guide column I in a sliding mode, the guide column I is fixed on the main bottom plate, a return spring I is arranged on the guide column I between the rear right limiting plate and the main bottom plate, the core block I is embedded and fixed at the rear part of the rear right limiting plate, and the rubber cushion II is arranged between the rear right limiting plate and the core block I.
The invention further improves, the upper limiting assembly comprises an upper limiting plate, a pressing die and an upper oil cylinder connecting plate, wherein one ends of the upper limiting plate and the pressing die are in butt joint and fixed, the upper limiting plate and the pressing die are embedded and fixed in the upper oil cylinder connecting plate, and a rubber cushion I is arranged between the upper limiting plate and the upper oil cylinder connecting plate.
The invention further improves that an adjusting gasket is arranged between the pressing die and the upper oil cylinder connecting plate.
According to the invention, a proximity switch is arranged on the outer side of the left baffle plate, and a limit bar matched with the proximity switch is arranged on the left side of the L-shaped sliding plate.
According to a further improvement of the invention, a guide key is fixedly arranged on the inner side of the left baffle plate.
The beneficial effect of this scheme is:
(1) The front limiting assembly, the rear limiting assembly and the upper limiting assembly are adopted to position and compress the special-shaped fishplates to be processed, elastic pieces are respectively arranged on different sides in the front limiting assembly and the rear limiting assembly, and the elastic pieces are arranged on one side in the upper limiting assembly, so that the bidirectional forming of workpieces can be completed by one-time positioning, the positioning accuracy is high, and the device can be used for mass rapid production;
(2) When the special-shaped fishplate is used, the special-shaped fishplate can be matched and processed according to different offset parameters of the special-shaped fishplate in actual production requirements so as to adapt to the same or similar specification models, and the universality is strong;
(3) The invention has simple operation, safe and reliable use and low repair rate.
It can be seen that the present invention has outstanding substantial features and significant advances over the prior art, as well as the benefits of its implementation.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a left side view of fig. 1.
FIG. 3 is a schematic view of the cross-sectional structure A-A of FIG. 2.
Fig. 4 is a schematic view of the cross-sectional structure of B-B of fig. 3.
Fig. 5 is a schematic view of the D-D cross-sectional structure of fig. 3.
Fig. 6 is a schematic view of the partial cross-sectional structure of fig. 1.
Fig. 7 is a schematic structural view of the special-shaped fishplate of the invention.
In the figure, 1 is a main bottom plate, 2 is a lower supporting plate, 3 is an upper limiting plate, 4 is a fishplate blank, 5 is a rear right limiting plate, 6 is a rear left limiting plate, 7 is a core block I, 8 is an L-shaped sliding plate, 9 is a right baffle, 10 is a left baffle, 11 is a front left limiting plate, 12 is a core block IV, 13 is a front right limiting plate, 14 is a core block III, 15 is an upper cylinder connecting plate, 16 is a cylinder fixing plate, 17 is a hydraulic cylinder, 18 is a bolt, 19 is a pressing die, 20 is a core block II, 21 is a guide post I, 22 is a return spring I, 23 is a guide post II, 24 is a small round nut, 25 is a rubber pad I, 27 is a guide key, 28 is a bolt, 29 is a rubber pad II, 30 is a rubber pad III, 31 is a proximity switch support, 32 is a proximity switch, 33 is a limit bar, 34 is a screw, 35 is a return spring II, 36 is a vertical (U-direction) hydraulic pressure device, and 37 is an adjusting gasket.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is described below by means of a specific embodiment in combination with the accompanying drawings.
The processing device of the special-shaped fishplates comprises a main bottom plate 1, wherein a lower supporting plate 2 matched with the lower surface of the special-shaped fishplates is arranged on the main bottom plate 1, a front limiting component and a rear limiting component for limiting and fixing the V direction of the special-shaped fishplates are respectively arranged at the front part and the rear part of the lower supporting plate 2, and an upper limiting component for limiting and fixing the U direction of the special-shaped fishplates is arranged at the upper part of the lower supporting plate 2; the front limiting component is driven by a first driving mechanism to move along the V direction, the rear limiting component is fixed on the main bottom plate 1, and the upper limiting component is driven by a second driving mechanism to move along the U direction; elastic pieces are respectively arranged on different sides in the front limiting assembly and the rear limiting assembly, and elastic pieces are arranged on one side in the upper limiting assembly.
The front portion of the main bottom plate is fixedly provided with a left baffle plate 10 and a right baffle plate 9, an oil cylinder fixing plate 16 is fixedly connected between the left baffle plate 10 and the right baffle plate 9, a hydraulic cylinder 17 is fixedly arranged on the oil cylinder fixing plate 16, an output shaft of the hydraulic cylinder 17 is fixedly connected with an L-shaped sliding plate 8, and the L-shaped sliding plate 8 is positioned on the upper portion of the main bottom plate 1.
The front limiting assembly comprises a front left limiting plate 11, a core block IV 12, a rubber cushion III 30, a front right limiting plate 13 and a core block III 14, wherein the front left limiting plate 11 is fixed on the left side of the front end of the L-shaped sliding plate 8, the core block IV 12 is fixedly embedded in the front portion of the front left limiting plate 11, the rubber cushion III 30 is positioned between the front left limiting plate 11 and the L-shaped sliding plate 8, the front right limiting plate 13 is slidably arranged on a guide post II 23, the guide post II 23 is fixed on the right side of the front end of the L-shaped sliding plate 8, a return spring II 35 is sleeved on the guide post II 23 between the front right limiting plate 13 and the L-shaped sliding plate 8, and the core block III 14 is fixedly embedded in the front portion of the front right limiting plate 13.
The back spacing subassembly includes back left limiting plate 6, pellet II 20, back right limiting plate 5, pellet I7 and cushion II 29, back left limiting plate 6 is fixed on main bottom plate 1, the pellet II 20 is built-in to be fixed in the rear portion of back left limiting plate 6, back right limiting plate 5 slides and sets up on guide post I21, guide post I21 is fixed on main bottom plate 1, is provided with return spring I22 on the guide post I21 between back right limiting plate 5 and main bottom plate 1, the pellet I7 is built-in to be fixed in the rear portion of back right limiting plate 5, cushion II 29 is located between back right limiting plate 5 and the pellet I7.
The upper limiting assembly comprises an upper limiting plate 3, a pressing die 19 and an upper oil cylinder connecting plate 15, one ends of the upper limiting plate and the pressing die 19 are in butt joint and fixed, the upper limiting plate 3 and the pressing die 19 are embedded and fixed in the upper oil cylinder connecting plate 15, and a rubber mat I25 is arranged between the upper limiting plate 3 and the upper oil cylinder connecting plate 15. An adjusting gasket 37 is arranged between the pressing die 19 and the upper oil cylinder connecting plate 15.
The left side of the left baffle plate 10 is provided with a proximity switch 32, and the left side of the L-shaped sliding plate 8 is provided with a limit bar 33 matched with the proximity switch 32. A guide key 27 is fixedly arranged on the inner side of the left baffle plate 10. The left part of the whole device is constant in the horizontal direction, and the right part limiting plates (the front right limiting plate 13 and the rear right limiting plate 5) are provided with return springs, and float up and down during the stamping operation. At this time, the leftmost guide key 27 serves as a guide for the assembly in the direction of the hydraulic cylinder.
In the practical use process, the upper end of the upper oil cylinder connecting plate 15 is fixedly connected with the vertical hydraulic pressure device 36, and as the compatibility and universality of the design mechanism, the vertical hydraulic pressure device 36 can be a hydraulic press working in the vertical direction or a hydraulic cylinder lifting combination, is not limited by constraint, and can meet the pressure downward output and lifting in the vertical direction, namely, the requirement is considered to be met.
The connection and fixation between the workpieces can be realized by hot-set inlaying, standard part connection and fixation or welding and the like, and the connection and fixation are not taken as constraint conditions for restricting the structure of the invention, so that the production function of the workpiece is realized as the final purpose.
Working principle:
in the first stage, the vertical hydraulic pressure device 36 drives the upper limiting plate 3 and the pressing die 19 to lift, and the hydraulic cylinder 17 drives the front left limiting plate 11, the front right limiting plate 13, the core block III 14, the core block IV 12 and other parts of accessories to integrally retreat through the L-shaped sliding plate 8 synchronously, so that a feeding space of the workpiece is reserved. The locally preheated fishplate blank 4 is placed on the lower supporting plate 2 through Y-direction discharging, and the grooves on the lower supporting plate 2 are in radian fit with the fishplate blank 4, so that quick pre-positioning is realized.
In the second stage, after the hydraulic cylinder 17 confirms that the workpiece blank 4 is in place, an output shaft of the hydraulic cylinder 17 pushes the L-shaped sliding plate 8, the core block II 6, the core block IV 12 and the core block III 14 are firstly contacted with the workpiece blank 4, and similarly, the vertical hydraulic pressure device 36 drives the upper limiting plate 3 and the lower pressing die 19 to press downwards, and the fishplate blank 4 is contacted with the lower supporting plate 2 and the upper limiting plate 3, so that the instantaneous positioning of the workpiece in three directions is realized;
the second stage is synchronous, the vertical hydraulic pressure device 36 is pressed downwards, the upper end of the workpiece blank 4 is tightly contacted with the upper limiting plate 3, the upper part of the upper limiting plate 3 is provided with a rubber pad I25 for buffering stress when the workpiece is instantaneously contacted, and the upper end of the workpiece in the U direction is limited and fixed together;
when the output shaft of the hydraulic cylinder 17 pushes the L-shaped sliding plate 8 to work, the limit bar 33 is in contact with the proximity switch 32, so that the limit and stop of the stroke are realized, and the position adjusting groove is arranged on the proximity switch 32, so that the limit position of the hydraulic cylinder can be adjusted according to the dislocation specification of different products, the dislocation amount can be effectively achieved, the overtravel damage of the oil cylinder to the workpiece is ensured, and the safety protection effect is realized.
In the third stage, the U direction and the V direction synchronously apply pressure, the cylinder piston of the hydraulic cylinder 17 continues to push, the rubber pad II 29 elastically deforms under the action of stress, the core block III 14 applies thrust, and the workpiece realizes the dislocation deformation of the V direction;
in the third stage, the lower stamping die 19 is in contact with the fishplate blank 4 for forging and pressing, so that U-direction offset is realized. The rubber pad I25 at the upper end of the upper limiting plate 3 elastically deforms to buffer pressure, and the offset is accurately adjusted through the adjusting gasket 37 between the pressing die 19 and the upper oil cylinder connecting plate 15;
the adjusting gasket 37 is a group of thin steel plates formed by special-shaped fishplates, the width is based on the width of the inner groove of the upper oil cylinder connecting plate 15, and different thicknesses are selected according to different displacement amounts.
And in the fourth stage, rolling and forming are carried out, the first stage is repeated, the vertical hydraulic pressure device 36 is lifted, the hydraulic cylinder 17 drives accessories thereof to retreat, the formed workpiece blank 4 is withdrawn, the next workpiece is assembled, and the cyclic production is realized.
While the foregoing description of the embodiments of the invention has been presented in conjunction with the drawings, it will be appreciated by those skilled in the art that variations or modifications may be made without the benefit of the teachings of the present invention.
Claims (7)
1. A processing device of a special-shaped fishplate is characterized in that: the special-shaped fishplate comprises a main bottom plate, wherein a lower supporting plate matched with the lower surface of the special-shaped fishplate is arranged on the main bottom plate, a front limiting assembly and a rear limiting assembly for limiting and fixing the V direction of the special-shaped fishplate are respectively arranged at the front part and the rear part of the lower supporting plate, and an upper limiting assembly for limiting and fixing the U direction of the special-shaped fishplate is arranged at the upper part of the lower supporting plate; the front limiting assembly is driven by a first driving mechanism to move along the V direction, the rear limiting assembly comprises a rear left limiting plate, the rear left limiting plate is fixed on the main bottom plate, and the upper limiting assembly is driven by a second driving mechanism to move along the U direction; the front limiting assembly is characterized in that elastic pieces are arranged on different sides in the front limiting assembly and the rear limiting assembly respectively, an elastic piece is arranged on one side in the upper limiting assembly, a left baffle and a right baffle are fixed on the front portion of the main bottom plate, and a guide key is fixedly arranged on the inner side of the left baffle.
2. The processing device for the special-shaped fishplates of claim 1, wherein: an oil cylinder fixing plate is fixedly connected between the left baffle and the right baffle, a hydraulic cylinder is fixedly arranged on the oil cylinder fixing plate, an output shaft of the hydraulic cylinder is fixedly connected with an L-shaped sliding plate, and the L-shaped sliding plate is positioned on the upper portion of the main bottom plate.
3. The processing device for the special-shaped fishplates of claim 2, wherein: the front limiting assembly comprises a front left limiting plate, a core block IV, a rubber mat III, a front right limiting plate and a core block III, wherein the front left limiting plate is fixed on the left side of the front end of the L-shaped sliding plate, the core block IV is embedded and fixed in the front part of the front left limiting plate, and the rubber mat III is positioned on the front left limiting plate
And the front right limiting plate is arranged on the guide post II in a sliding manner, the guide post II is fixed on the right side of the front end of the L-shaped sliding plate, a return spring II is sleeved on the guide post II between the front right limiting plate and the L-shaped sliding plate, and the core block III is embedded and fixed on the front part of the front right limiting plate.
4. A device for processing a profiled fishplate as claimed in claim 3, wherein: the rear limiting assembly further comprises a core block II, a rear right limiting plate, a core block I and a rubber cushion II, wherein the core block II is internally embedded and fixed at the rear part of the rear left limiting plate, the rear right limiting plate is arranged on a guide column I in a sliding mode, the guide column I is fixed on a main bottom plate, a return spring I is arranged on the guide column I between the rear right limiting plate and the main bottom plate, the core block I is internally embedded and fixed at the rear part of the rear right limiting plate, and the rubber cushion II is positioned between the rear right limiting plate and the core block I.
5. A device for processing a profiled fishplate as claimed in claim 3, wherein: the upper limiting assembly comprises an upper limiting plate, a pressing die and an upper oil cylinder connecting plate, wherein one ends of the upper limiting plate and the pressing die are in butt joint and fixed, the upper limiting plate and the pressing die are embedded and fixed in the upper oil cylinder connecting plate, and a rubber cushion I is arranged between the upper limiting plate and the upper oil cylinder connecting plate.
6. The device for processing the special-shaped fishplate of claim 5, wherein: an adjusting gasket is arranged between the pressing die and the upper oil cylinder connecting plate.
7. The processing device for the special-shaped fishplates of claim 2, 4, 5 or 6, wherein the processing device is characterized in that: and a proximity switch is arranged on the outer side of the left baffle plate, and a limit strip matched with the proximity switch is arranged on the left side of the L-shaped sliding plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710827883.7A CN107442618B (en) | 2017-09-14 | 2017-09-14 | Machining device for special-shaped fishplates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710827883.7A CN107442618B (en) | 2017-09-14 | 2017-09-14 | Machining device for special-shaped fishplates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107442618A CN107442618A (en) | 2017-12-08 |
| CN107442618B true CN107442618B (en) | 2023-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710827883.7A Active CN107442618B (en) | 2017-09-14 | 2017-09-14 | Machining device for special-shaped fishplates |
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| Country | Link |
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| CN (1) | CN107442618B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108856398A (en) * | 2018-05-31 | 2018-11-23 | 宁波信泰机械有限公司 | A kind of automotive trim strip small bend angle apparatus for bending |
| CN108857895B (en) * | 2018-08-09 | 2023-05-12 | 中铁上海工程局集团有限公司 | Adjustable straightening steel rail clamping device and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06320220A (en) * | 1993-07-09 | 1994-11-22 | Amada Co Ltd | Hydraulic press brake |
| CN105537487A (en) * | 2016-01-27 | 2016-05-04 | 山东远大特材科技股份有限公司 | Manufacturing method for special-shaped fishplate and dies |
| CN205362317U (en) * | 2015-12-05 | 2016-07-06 | 天津市顺达汽车零部件有限公司 | Novel stabilizer bar thermoforming device |
| CN106946167A (en) * | 2017-05-09 | 2017-07-14 | 徐州建机工程机械有限公司 | A kind of New-type plate fish tail board component |
| CN207430985U (en) * | 2017-09-14 | 2018-06-01 | 山东远大特材科技股份有限公司 | A kind of processing unit (plant) of various shaped fishplate |
-
2017
- 2017-09-14 CN CN201710827883.7A patent/CN107442618B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06320220A (en) * | 1993-07-09 | 1994-11-22 | Amada Co Ltd | Hydraulic press brake |
| CN205362317U (en) * | 2015-12-05 | 2016-07-06 | 天津市顺达汽车零部件有限公司 | Novel stabilizer bar thermoforming device |
| CN105537487A (en) * | 2016-01-27 | 2016-05-04 | 山东远大特材科技股份有限公司 | Manufacturing method for special-shaped fishplate and dies |
| CN106946167A (en) * | 2017-05-09 | 2017-07-14 | 徐州建机工程机械有限公司 | A kind of New-type plate fish tail board component |
| CN207430985U (en) * | 2017-09-14 | 2018-06-01 | 山东远大特材科技股份有限公司 | A kind of processing unit (plant) of various shaped fishplate |
Non-Patent Citations (1)
| Title |
|---|
| 李远睿 ; 史兴华 ; 潘建成 ; 余延庆 ; .56Nb钢鱼尾板的热轧及热处理工艺.钢铁研究学报.2007,(05),全文. * |
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