CN114055047A - Rigid fixing anti-deformation device and method for welding thin plate - Google Patents
Rigid fixing anti-deformation device and method for welding thin plate Download PDFInfo
- Publication number
- CN114055047A CN114055047A CN202111300563.9A CN202111300563A CN114055047A CN 114055047 A CN114055047 A CN 114055047A CN 202111300563 A CN202111300563 A CN 202111300563A CN 114055047 A CN114055047 A CN 114055047A
- Authority
- CN
- China
- Prior art keywords
- positioning
- thin plate
- ejection
- welding
- deformation
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000002265 prevention Effects 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 8
- 238000004021 metal welding Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000012937 correction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to the technical field of welding of sheet parts of rail transit equipment, in particular to a rigid fixing anti-deformation device for welding a sheet. According to the invention, the rigid fixing method is adopted, the constraint force on the sheet weldment is increased through the positioning device to reduce the welding deformation, and meanwhile, the ejection device is adopted to improve the production efficiency of the product and reduce the working strength. The invention also discloses an anti-deformation method for welding the thin plate.
Description
Technical Field
The invention relates to a rigid fixing anti-deformation device and method for welding a thin plate, and belongs to the technical field of welding of thin plate parts of rail transit equipment.
Background
With the development of socio-economic and the improvement of the manufacturing level, the requirements on products are higher and higher. Welding is an important manufacturing means, and has become one of the main processing methods of metal components, and thin plates have the advantages of light weight, easy processing, easy forming, convenient connection and the like, so that the thin plates are widely applied to industrial production and social life. When the longitudinal shrinkage of the welding seam and the pressure of the edge of the thin plate exceed a certain ratio, severe wavy deformation can be generated, and the welding quality, the structural performance, the safety reliability, the manufacturing process performance and the like of the thin plate are directly influenced.
In the prior art, the following methods are mainly used for preventing the welding deformation of the thin plate:
1. pre-welding prevention: the method for preventing the thin plate before welding is a reverse deformation method, which means that a proper deformation amount in the opposite direction is added to a welding component before welding, has certain effect on reducing the deformation of the thin plate welding component, but the reverse deformation of the component with larger external dimension is difficult, the deformation amount is difficult to control, special equipment is required, and the processing cost is increased.
2. And (3) postweld correction: the post-welding correction method for the welding deformation of the sheet mainly comprises a mechanical correction method and a flame heating correction method
1) The mechanical straightening method mainly comprises a hammering method, a rolling method, a point-by-point extrusion method, a mechanical stretching method and the like. These methods all reduce the welding deformation to some extent, but all have certain disadvantages and shortcomings. For example, the hammering method is to perform proper hammer impact on the weld and the metal near the weld deformation region, and eliminate the welding deformation by extending the thin plate, and has the disadvantages of high labor intensity, uncontrollable hammering force and poor surface quality of the thin plate caused by rough hammering surface; the rolling method is to roll the weld seam or the metal near the weld seam by using a disc-shaped roller to roll and expand the weld seam so as to eliminate the instability deformation, but because the rolling force is often 10-20T to obtain larger plastic deformation amount when the weld seam is rolled, the direct rigid transmission of the roller with small diameter is difficult to realize under large pressure.
2) The flame heating method is to utilize flame to locally heat to generate compression deformation, and after cooling, the metal at the part generates shrinkage to achieve the effect of correcting the deformation, but the quality of the effect has a great relationship with the technical level of an operator, and the deformation cannot be completely eliminated.
In addition, special process equipment is needed for correcting the deformation after welding, so that the manufacturing cost is increased, the production working hour is prolonged, and the production efficiency is reduced.
Disclosure of Invention
The invention provides a rigid fixing anti-deformation device for welding a thin plate, which comprises an ejection part and a positioning part, wherein the positioning part is fixedly arranged between the ejection part and the thin plate, the constraint force of a thin plate welding piece is increased through the positioning part to reduce the welding deformation, and meanwhile, the ejection device is adopted to eject the thin plate from the positioning part after the welding of the thin plate is finished, so that the production efficiency of products is improved, and the working strength is reduced. The invention also provides a deformation prevention method for welding the thin plate.
In order to achieve the purpose, the invention provides the following technical scheme:
a rigid fixing anti-deformation device for welding a thin plate comprises an ejection part and a positioning part, wherein the positioning part is arranged between the ejection part and the thin plate and can stretch up and down above the ejection part.
Preferably, the ejection part comprises a bottom plate and a plurality of ejection pins uniformly distributed at the upper end of the bottom plate, and the positioning part comprises a positioning plate and a plurality of guide holes uniformly distributed on the positioning plate and matched with the ejection pins.
Preferably, the elastic piece is sleeved outside the ejection pin.
Preferably, the two sides of the positioning component are provided with mounting platforms, and the mounting platforms are provided with mounting interfaces.
Preferably, the positioning part is provided with a positioning hole for fixing the thin plate, and the positioning hole and the guide hole are arranged in a staggered manner; the thin plate is connected to the positioning plate right above the guide hole through the positioning hole.
Preferably, the thin plate is provided with a positioning pin which can extend into the positioning hole, the inner diameter N of the lower part of the positioning hole is matched with the outer diameter of the positioning pin, and the inner diameter M of the upper part of the positioning hole is larger than the inner diameter N of the lower part of the positioning hole.
Preferably, the ejection driving part is arranged below the bottom plate, and the lower end surface of the bottom plate is a loading surface of the ejection driving part.
The deformation preventing method for welding the thin plate adopts the rigid fixing deformation preventing device to prevent the thin plate from deforming in the welding process, and comprises the following steps of: the thin plate is arranged above the positioning plate, the positioning pin extends into the positioning hole, and the thin plate and the positioning plate are fixed by matching the lower end of the positioning pin with the lower end of the positioning hole
Preferably, the method further comprises the following steps: and (5) welding the thin plate, and ensuring the verticality of the positioning pin by the positioning hole.
Preferably, the method further comprises the following steps: starting an ejection driving piece, applying a loading force to the lower end face of the bottom plate by the ejection driving piece, and enabling the ejection device to move upwards along the guide hole through the ejection pin and eject the thin plate upwards so that the positioning pin is released from the positioning hole; and closing the ejection driving part, resetting the ejection device through the elastic part, and taking down the thin plate to complete the thin plate welding operation.
The technical effects are as follows:
1. the welding device comprises a positioning component and an ejection component, wherein the positioning component is used for positioning a thin plate weldment in the welding process, and the constraint force of the thin plate weldment is increased to reduce the welding deformation; the welded thin plate weldment is ejected out of the positioning component through the ejection component, so that the production efficiency of products is improved, and the working strength of workers is reduced; meanwhile, the device is low in cost and simple and convenient to assemble and operate.
2. The ejection pin is arranged on the ejection part, the guide hole matched with the ejection pin is arranged on the positioning part, the ejection pin is positioned through the guide hole and guided to freely move up and down, and ejection force is uniformly distributed on the surface of a welded product to prevent the product from being stuck or deformed; and the probability of product damage caused in the product shaping process after the welded product is deformed can be avoided, and the qualification rate of the product is improved.
3. According to the invention, the positioning hole is arranged on the positioning component, the positioning hole is in a counter bore form with a smaller lower part and a larger upper part, the inner diameter N of the lower part of the positioning hole is matched with the outer diameter of the lower part of the positioning pin, and the inner diameter M of the upper part of the positioning hole is larger than the inner diameter N of the lower part of the positioning hole, so that the ejection stroke is reduced and the release of a welded product is facilitated.
4. The invention adopts the positioning hole and the positioning pin to position the thin plate, can reduce the welding positioning difficulty and the positioning time before the welding of the thin plate and improve the processing efficiency.
Drawings
Fig. 1 is an overall perspective view of a rigid fixing deformation preventing device for welding thin plates.
Fig. 2 is a front view of a rigid fixing deformation preventing device for welding thin plates.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a schematic sectional view in the direction of a-a in fig. 3.
Fig. 5 is a schematic structural view of the positioning member.
The reference numerals include: 1. a thin plate; 2. positioning pins; 201. a pin head; 202. a pin rod; 3. a base plate; 4. ejecting a pin; 5. positioning a plate; 6. a guide hole; 7. a spring; 8. an installation table; 9. installing an interface; 10. positioning holes; 11. the upper part of the positioning hole; 12. the lower part of the positioning hole; 13. and (4) a loading surface.
Detailed Description
The invention is described in further detail below with reference to figures 1-5.
A rigid fixing anti-deformation device for welding a thin plate comprises an ejection part and a positioning part, wherein the positioning part is arranged between the ejection part and the thin plate 1 and can stretch up and down above the ejection part; specifically, the positioning member is positioned above the ejecting member, and the sheet 1 is positioned above the positioning member. The ejection part comprises a bottom plate 3 and a plurality of ejection pins 4 which are uniformly distributed at the upper end of the bottom plate 3, the positioning part comprises a positioning plate 5 and a plurality of guide holes 6 which are uniformly distributed on the positioning plate 5 and are matched with the ejection pins 4,
as shown in fig. 1, the number of the ejection pins 4 in this embodiment is 3, the number of the guide holes 6 is 3, the number of the ejection pins 4 is matched with that of the guide holes 6, the ejection pins 4 and the guide holes 6 are both in a cylindrical structure, the ejection pins 4 are guided and limited by the 3 guide holes 6, and uniform and stable triangular supporting force is provided for the bottom plate 3, and those skilled in the art can set the ejection pins 4 and the guide holes 6 in other numbers and shapes according to actual working conditions. An elastic part, specifically a spring 7, is sleeved on the outer side of the ejection pin 4, and the spring 7 provides a reset force for the ejection part after the welding of the thin plate 1 is completed so as to reset the bottom plate 3 and the ejection pin 4.
Wherein, the both sides of locating part are equipped with mount table 8, are equipped with installation interface 9 on the mount table 8, fix locating plate 5 through mount table 8 and installation interface 9. As shown in fig. 5, the positioning member is further provided with a positioning hole 10 for fixing the thin plate 1, and the positioning hole 10 is arranged to be staggered with the guide hole 6; the sheet metal 1 is located the top of locating plate 5, is equipped with the connecting hole on the sheet metal 1, is equipped with the locating pin 2 that can stretch into in the locating hole 10 in the connecting hole, and the sheet metal 1 passes through locating hole 10 to be connected directly over guiding hole 6 in locating plate 5. As shown in fig. 4, the positioning pin 2 includes a pin head 201 and a pin rod 202, before the thin plate 1 is subjected to the welding operation, the pin rod 202 is extended into the lower part of the thin plate 1 from the connecting hole of the thin plate 1, the outer diameter of the pin head 201 is larger than the inner diameter of the connecting hole, and the positioning pin 2 is clamped on the upper end surface of the thin plate 1 through the pin head 201.
As shown in fig. 4, the inner diameter N of the lower part 12 of the positioning hole is matched with the outer diameter of the positioning pin 2, and the inner diameter M of the upper part 11 of the positioning hole is larger than the inner diameter N of the lower part 12 of the positioning hole; the ejection stroke of the welded thin plate 1 is the height of the lower part 12 of the positioning hole, and after the lower part of the positioning pin 2 is ejected out of the lower part 12 of the positioning hole, the thin plate 1 is released, so that the ejection stroke of the thin plate 1 in the ejection process after welding is finished is reduced and the release of a welded product is facilitated by adopting a counter bore design form with a small lower part and a large upper part for the positioning hole 10. As shown in fig. 5, the number of the positioning holes 10 in this embodiment is 2 that are matched with the positioning pins 2 of the thin plate 1, and those skilled in the art can also set other corresponding number of positioning holes 10 on the positioning plate 5 according to the specific number of the positioning pins 2 required by the thin plate 1 in the actual working condition, so as to satisfy the rigid fixation of the thin plate 1 in the welding process and prevent the deformation of the thin plate 1.
The lower part of the bottom plate 3 in the ejection part is provided with an ejection driving part, the lower end surface of the bottom plate 3 is a loading surface 13 of the ejection driving part, the ejection driving part can be an air cylinder, a motor and the like, the ejection driving part in the embodiment is specifically an air cylinder, after the thin plate 1 is welded, an upward load is applied to the loading surface 13 through the air cylinder, so that the bottom plate 3 and the ejection pin 4 move upward, the ejection pin 4 moves upward along the guide hole 6 and extends upward out of the upper end surface of the positioning plate 5, and at the moment, the lower part of the positioning pin 2 is ejected out of the lower part 12 of the positioning hole, so that the thin plate 1 is ejected upward and released.
The deformation preventing method for welding the thin plate adopts the rigid fixing deformation preventing device to prevent the thin plate from deforming in the welding process, and comprises the following steps of:
the first step is as follows: placing the thin plate 1 above the positioning plate 5, aligning the connecting hole of the thin plate 1 with the positioning hole 10 of the positioning plate 5, installing the positioning pin 2 in the connecting hole and extending the positioning pin 2 into the positioning hole 10, and fixing the thin plate 1 and the positioning plate 5 by matching the lower end of the positioning pin 2 with the lower end of the positioning hole 10;
the second step is that: welding operation is carried out on the thin plate 1, the perpendicularity of the positioning pin 2 in the welding process is guaranteed through the positioning hole 10, the stress balance of the thin plate 1 in the welding process is further guaranteed, and the deformation of the thin plate 1 is prevented.
The third step: starting the air cylinder, applying a loading force to the lower end face, namely a loading face 13, of the bottom plate 3 through a power output rod of the air cylinder, enabling the ejection device to move upwards along the guide hole 6 through the ejection pin 4 and eject the thin plate 1 upwards, and releasing the positioning pin 2 from the positioning hole 10 at the moment;
the fourth step: and closing the cylinder, resetting the ejection device through the spring 7, and taking down the welded thin plate 1 to finish the welding operation of the thin plate 1.
The above examples are only illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments of the present invention as required without any inventive contribution thereto after reading the present specification, but all such modifications are intended to be protected by the following claims.
Claims (10)
1. The utility model provides a rigidity fixed anti-deformation device of sheet metal welding, includes ejecting part and locating part, the locating part is arranged in between ejecting part and sheet metal (1) and can stretch out and draw back from top to bottom above ejecting part.
2. The rigid fixing deformation prevention device and the deformation prevention method for thin plate welding according to claim 1, wherein the ejection part comprises a bottom plate (3) and a plurality of ejection pins (4) uniformly distributed at the upper end of the bottom plate (3), and the positioning part comprises a positioning plate (5) and a plurality of guide holes (6) uniformly distributed on the positioning plate (5) and matched with the ejection pins (4).
3. Rigid fixation deformation prevention device for thin plate welding according to claim 2, characterized in that the ejector pin (4) is sleeved with an elastic piece on the outside.
4. The rigid fixing deformation prevention device for thin plate welding of claim 3, wherein mounting platforms (8) are arranged on two sides of the positioning component, and mounting interfaces (9) are arranged on the mounting platforms (8).
5. The rigid fixing deformation prevention device for thin plate welding according to claim 4, wherein the positioning component is provided with a positioning hole (10) for fixing the thin plate (1), and the positioning hole (10) and the guide hole (6) are arranged in a staggered manner; the thin plate (1) is connected to the positioning plate (5) through the positioning hole (10) right above the guide hole (6).
6. The rigid fixing deformation-preventing device for thin plate welding according to claim 5, wherein the thin plate (1) is provided with a positioning pin (2) capable of extending into the positioning hole (10), the inner diameter N of the lower part (12) of the positioning hole is matched with the outer diameter of the positioning pin (2), and the inner diameter M of the upper part (11) of the positioning hole is larger than the inner diameter N of the lower part (12) of the positioning hole.
7. The rigid fixing deformation prevention device for sheet welding according to claim 6, wherein an ejection driving member is arranged below the bottom plate (3), and the lower end surface of the bottom plate (3) is a loading surface (13) of the ejection driving member.
8. A deformation preventing method for welding thin plates, which prevents deformation of thin plates during welding by using the rigid fixing deformation preventing device of claims 1-7, comprising the steps of: the thin plate (1) is placed above the positioning plate (5), the positioning pin (2) extends into the positioning hole (10), and the thin plate (1) is fixed with the positioning plate (5) through the matching of the lower end of the positioning pin (2) and the lower end of the positioning hole (10).
9. A deformation prevention method for thin plate welding according to claim 8, further comprising the steps of: welding operation is carried out on the thin plate (1), and the perpendicularity of the positioning pin (2) is ensured by the positioning hole (10).
10. A deformation prevention method for thin plate welding according to claim 9, further comprising the steps of: starting an ejection driving piece, applying a loading force to the lower end face of the bottom plate (3) by the ejection driving piece, and enabling the ejection device to move upwards along the guide hole (6) through the ejection pin (4) and eject the thin plate (1) upwards so that the positioning pin (2) is released from the positioning hole (10); and closing the ejection driving piece, resetting the ejection device through the elastic piece, and taking down the thin plate (1) to complete the welding operation of the thin plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111300563.9A CN114055047A (en) | 2021-11-04 | 2021-11-04 | Rigid fixing anti-deformation device and method for welding thin plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111300563.9A CN114055047A (en) | 2021-11-04 | 2021-11-04 | Rigid fixing anti-deformation device and method for welding thin plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114055047A true CN114055047A (en) | 2022-02-18 |
Family
ID=80273917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111300563.9A Pending CN114055047A (en) | 2021-11-04 | 2021-11-04 | Rigid fixing anti-deformation device and method for welding thin plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114055047A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107309839A (en) * | 2016-10-07 | 2017-11-03 | 顺德职业技术学院 | Multifunctional mold work operating desk |
| CN107592737A (en) * | 2017-09-11 | 2018-01-16 | 电信科学技术仪表研究所有限公司 | A kind of adjustable tool mould and pcb board fixing means |
| KR101941212B1 (en) * | 2018-08-17 | 2019-04-12 | (주)동방파스텍 | Jig plate for manufacturing panel door cover and manufacturing method of panel door cover using same |
| CN210549344U (en) * | 2019-07-18 | 2020-05-19 | 广东何氏协力机械制造股份有限公司 | Wheel hub locating pin moulding-die |
| CN210615651U (en) * | 2019-10-16 | 2020-05-26 | 陕西北方风力机电有限责任公司 | Welding assistive device for controlling welding deformation |
| CN212145132U (en) * | 2020-04-27 | 2020-12-15 | 中汽（天津）汽车装备有限公司 | Porous frame welding piece quick positioning device |
| FR3099072A1 (en) * | 2019-07-22 | 2021-01-29 | Kraftek | Precise and automatable clamping chuck for machine lathes or pallets |
| CN213672344U (en) * | 2020-11-20 | 2021-07-13 | 深圳锦邦达电子有限公司 | Overhauling, welding and fixing device capable of quickly assembling and disassembling PCB |
-
2021
- 2021-11-04 CN CN202111300563.9A patent/CN114055047A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107309839A (en) * | 2016-10-07 | 2017-11-03 | 顺德职业技术学院 | Multifunctional mold work operating desk |
| CN107592737A (en) * | 2017-09-11 | 2018-01-16 | 电信科学技术仪表研究所有限公司 | A kind of adjustable tool mould and pcb board fixing means |
| KR101941212B1 (en) * | 2018-08-17 | 2019-04-12 | (주)동방파스텍 | Jig plate for manufacturing panel door cover and manufacturing method of panel door cover using same |
| CN210549344U (en) * | 2019-07-18 | 2020-05-19 | 广东何氏协力机械制造股份有限公司 | Wheel hub locating pin moulding-die |
| FR3099072A1 (en) * | 2019-07-22 | 2021-01-29 | Kraftek | Precise and automatable clamping chuck for machine lathes or pallets |
| CN210615651U (en) * | 2019-10-16 | 2020-05-26 | 陕西北方风力机电有限责任公司 | Welding assistive device for controlling welding deformation |
| CN212145132U (en) * | 2020-04-27 | 2020-12-15 | 中汽（天津）汽车装备有限公司 | Porous frame welding piece quick positioning device |
| CN213672344U (en) * | 2020-11-20 | 2021-07-13 | 深圳锦邦达电子有限公司 | Overhauling, welding and fixing device capable of quickly assembling and disassembling PCB |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114055047A (en) | Rigid fixing anti-deformation device and method for welding thin plate | |
| CN104139107A (en) | Toothed rail punching shaping device and toothed rail punching shaping technology | |
| CN111946138A (en) | Punching press assembled guardrail and equipment thereof | |
| CN111571186B (en) | High-precision multi-station nut riveting machine | |
| CN215844994U (en) | Copper sleeve correcting press | |
| CN210547595U (en) | Safe wear-resisting five metals stamping device | |
| CN212070289U (en) | Forging and pressing device | |
| CN109332452B (en) | bending equipment for producing stamping die | |
| CN210080508U (en) | Buffering type traceless bending precision die | |
| CN112976424A (en) | Matched die hammering device of matched die machine | |
| CN219378861U (en) | Prevent squeeze riveter of hand | |
| CN220371946U (en) | Workpiece shaping device | |
| CN210524127U (en) | Automatic welding equipment | |
| CN220680148U (en) | Gantry type sizing machine | |
| CN212822178U (en) | Prevent mould of mechanism's driver striking limiting plate | |
| CN215200477U (en) | Assembling device for crankshaft connecting rod bushing | |
| CN211679861U (en) | Damping positioning mechanism | |
| CN216226425U (en) | Punching die for mounting fan-shaped corrugated plate | |
| CN218015524U (en) | Rod forging limiting device | |
| CN219309724U (en) | Battery tray shaping device | |
| CN220838826U (en) | Shell riveting jig | |
| CN210334057U (en) | Riveting assembly machine | |
| CN103506554A (en) | Riveting machine | |
| CN220574480U (en) | Metal pipe punching tool | |
| CN213496274U (en) | Forging die holder for press |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |