CN220438021U

CN220438021U - Plate forming test machine

Info

Publication number: CN220438021U
Application number: CN202321399498.4U
Authority: CN
Inventors: 董智博; 刘波; 黄建超; 刘俊峰
Original assignee: Tianjin Taiga Ruixiang Apparatus Equipment Co ltd
Current assignee: Tianjin Taiga Ruixiang Apparatus Equipment Co ltd
Priority date: 2023-05-30
Filing date: 2023-05-30
Publication date: 2024-02-02
Anticipated expiration: 2033-05-30

Abstract

The utility model relates to a plate molding testing machine, which comprises a box body and a molding assembly; the molding assembly comprises a supporting shell, a concentric hydraulic cylinder, a female die, a male die and a blank holder; the concentric hydraulic cylinder comprises a cylinder barrel, and a rod-shaped piston rod and an annular piston rod which are concentrically arranged; the support shell is of a cylindrical structure with two open ends, the support shell is fixedly arranged on a top plate of the box body, the upper end of the cylinder barrel is connected with the lower end of the support shell, the female die is connected with the upper end of the support shell, and the male die and the blank holder are respectively connected with the tops of the rod-shaped piston rod and the annular piston rod. According to the plate forming testing machine provided by the utility model, the concentric hydraulic oil cylinder is arranged, the blank holder and the male die are respectively connected to the annular piston rod and the rod-shaped piston rod which are concentrically arranged, so that the testing force can be uniformly distributed during the plate forming test, the testing machine is more compact in structure and small in size and light in weight.

Description

Plate forming test machine

Technical Field

The utility model relates to the technical field of testing machines, in particular to a plate molding testing machine.

Background

The metal plate forming product has wide application, such as a rocket aluminum plate skin of an airplane, and a stainless steel vacuum cup, which is formed by plate forming.

Before the plate is molded and processed into a product, the molding process during the plate molding and processing needs to be simulated by a plate molding testing machine, so that data is provided for the practical application of the plate. However, when the existing plate forming test machine is used for edge pressing and stamping of the plate, two sets of hydraulic mechanisms are generally used for respectively performing edge pressing and stamping forming actions, so that the plate forming test machine is complex in structure and large in size and weight.

Disclosure of Invention

Accordingly, the present utility model is directed to a sheet molding testing machine, which solves the problems of the prior art.

According to the present utility model, there is provided a panel forming tester comprising a box and a forming assembly; wherein,

the molding assembly comprises a supporting shell, a concentric hydraulic cylinder, a female die, a male die and a blank holder;

the concentric hydraulic cylinder comprises a cylinder barrel, and a rod-shaped piston rod and an annular piston rod which are concentrically arranged, wherein an inner cavity and an outer cavity are arranged in the cylinder barrel, and the rod-shaped piston rod and the annular piston rod are respectively and movably connected in the inner cavity and the outer cavity;

the supporting shell is of a cylindrical structure with two open ends, the supporting shell is fixedly arranged on a top plate of the box body, the upper end of the cylinder barrel is connected to the lower end of the supporting shell, the female die is connected to the upper end of the supporting shell, and the male die and the blank holder are respectively connected to the tops of the rod-shaped piston rod and the annular piston rod;

a male die force value sensor for measuring the pressure value when the male die punches the plate is arranged between the male die and the rod-shaped piston rod, and a blank holder force value sensor for measuring the pressure value when the blank holder compresses the plate is arranged between the blank holder and the annular piston rod.

Preferably, a female die mounting seat is arranged at the top of the support shell, and the female die is detachably connected to the female die mounting seat.

Preferably, the top of the rod-shaped piston rod is sequentially connected with a first connecting flange, the male die force value sensor, a male die mounting seat and the male die from bottom to top;

the top of annular piston rod from bottom to top has connected gradually second flange, blank holder section of thick bamboo blank holder force value sensor, blank holder mount pad with the blank holder.

Preferably, a circular through hole is formed in the center of the second connecting flange, the second connecting flange is sleeved outside the rod-shaped piston rod, and the second connecting flange is positioned at the lower part of the first connecting flange;

the diameter of the circular through hole is smaller than the outer diameter of the first connecting flange.

Preferably, the blank holder force sensor, the blank holder mounting seat and the blank holder are all of annular structures, and the blank holder force sensor, the blank holder mounting seat and the blank holder are all sleeved outside the male die.

Preferably, the male die force value sensor and the blank holder force value sensor are spoke type pressure sensors.

Preferably, the support housing is further provided with a first displacement sensor for measuring the displacement of the male die and a second displacement sensor for measuring the displacement of the blank holder.

Preferably, the first displacement sensor and the second displacement sensor are both stay cord displacement sensors;

the outer side wall of the support shell is provided with two mounting seats, the fixed ends of the two stay rope displacement sensors are respectively and fixedly connected to the two mounting seats, and the stay rope ends of the two stay rope displacement sensors are respectively connected to the first connecting flange and the edge pressing barrel.

Preferably, a guiding optical axis is further arranged on the support shell, a guiding hole is correspondingly arranged on the blank holder mounting seat, and the guiding optical axis penetrates through the guiding hole.

Preferably, the support housing comprises an upper shell and a lower shell, the upper shell and the lower shell are detachably connected together, and the lower shell is fixedly connected to the top plate of the box body.

According to the plate forming testing machine provided by the utility model, the concentric hydraulic oil cylinder is arranged, the blank holder and the male die are respectively connected to the annular piston rod and the rod-shaped piston rod which are concentrically arranged, so that the testing force can be uniformly distributed during the plate forming test, the testing machine is more compact in structure and small in size and light in weight.

Drawings

The above and other objects, features and advantages of the present utility model will become more apparent from the following description of embodiments of the present utility model with reference to the accompanying drawings.

Fig. 1 is a schematic perspective view showing a sheet forming tester according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram showing a front view of a forming assembly in a sheet forming tester according to an embodiment of the present utility model.

Fig. 3 is a schematic side view of a forming assembly in a sheet forming tester according to an embodiment of the present utility model.

Fig. 4 is a cross-sectional view at A-A in fig. 3.

In the figure: 1. a case; 2. a support housing; 21. an upper case; 211. a first through opening; 22. a lower case; 221. a second through opening; 222. a third through opening; 3. a concentric hydraulic cylinder; 31. a cylinder; 311. the first rodless cavity oil port; 312. the first rod cavity oil port is formed; 313. the second rodless cavity oil port; 314. the second oil port of the rod cavity is formed; 32. a rod-shaped piston rod; 33. an annular piston rod; 34. a front cover; a. an inner cavity; b. an outer cavity; 41. a female die; 42. a female die mounting seat; 51. a male die; 52. a male die mounting seat; 53. a male die force value sensor; 54. a first connection flange; 55. a first pull rope connecting rod; 61. edge pressing rings; 62. a blank holder mounting seat; 621. a guide sleeve; 63. a blank holder force value sensor; 64. a blank holder; 65. a second connection flange; 66. a second pull rope connecting rod; 71. a first displacement sensor; 72. a second displacement sensor.

Detailed Description

Various embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts. For clarity, the various features of the drawings are not drawn to scale.

The utility model provides a plate forming test machine, which comprises a box body 1 and a forming assembly, and is shown in fig. 1 to 4. Wherein the forming assembly comprises a support shell 2, a concentric hydraulic cylinder 3, a female die 41, a male die 51 and a blank holder 61; the concentric hydraulic cylinder 3 comprises a cylinder 31, and a rod-shaped piston rod 32 and an annular piston rod 33 which are concentrically arranged, an inner cavity a and an outer cavity b are arranged in the cylinder 31, and the rod-shaped piston rod 32 and the annular piston rod 33 are respectively movably connected in the inner cavity a and the outer cavity b. The supporting shell 2 is of a cylindrical structure with two open ends, the supporting shell 2 is fixedly arranged on a top plate of the box body 1, the upper end of the cylinder 31 is connected with the lower end of the supporting shell 2, the female die 41 is connected with the upper end of the supporting shell 2, and the male die 51 and the blank holder 61 are respectively connected with the tops of the rod-shaped piston rod 32 and the annular piston rod 33. A punch force sensor 53 for measuring a pressure value when the punch 51 punches a plate is arranged between the punch 51 and the rod-shaped piston rod 32, and a blank holder force sensor 63 for measuring a pressure value when the blank holder 61 presses a plate is arranged between the blank holder 61 and the annular piston rod 33.

Specifically, the support housing 2 includes an upper case 21 and a lower case 22, the upper case 21 and the lower case 22 are detachably connected together, and the lower case 22 is fixedly connected to the top plate of the case 1. In this embodiment, the lower end of the upper shell 21 and the upper end of the lower shell 22 are respectively provided with a connecting flange protruding outwards, a mounting hole is formed in the top plate of the box body 1, and the connecting flange at the upper end of the lower shell 22 is clamped at the edge of the mounting hole of the top plate of the box body 1, and the connecting flanges of the top plate of the box body 1, the lower shell 22 and the connecting flange of the upper shell 21 are fixedly connected together in sequence through screws. The majority of the lower shell 22 and the concentric hydraulic cylinder 3 are located below the top plate of the tank 1, i.e. inside the tank 1. The box 1 is used for arranging related components such as a hydraulic pipeline and an electric control, and the box door is arranged on the box 1, so that the maintenance of equipment inside the box 1 is facilitated.

Referring to fig. 4, the cylinder 31 of the concentric hydraulic cylinder 3 includes an inner cylinder and an outer cylinder, the inner cylinder is an inner cavity a, a rod-shaped piston rod 32 is movably connected in the inner cavity a, a front cover 34 is disposed at the upper end of the inner cylinder, the upper end of the rod-shaped piston rod 32 passes through a central hole on the front cover 34, a piston is disposed at the lower end of the rod-shaped piston rod 32, the piston at the lower end of the rod-shaped piston rod 32 divides the inner cavity a into a first rodless cavity and a first rodless cavity, an oil port 311 communicating with the lower part of the inner cavity a and a first rodless cavity oil port 312 communicating with the upper part of the inner cavity a are disposed at the bottom of the cylinder 31, an oil duct is vertically disposed in the inner cylinder, an opening communicating with the upper part of the inner cavity a is disposed at the upper part of the oil duct, and the lower end of the oil duct is communicated with the first rodless cavity oil port 312. The rod-shaped piston rod 32 is extended when the first rod-free cavity oil port 311 is filled with oil, and the rod-shaped piston rod 32 is retracted when the first rod-free cavity oil port 312 is filled with oil. An outer cavity b is arranged between the inner cylinder and the outer cylinder, an annular piston rod 33 is movably connected in the outer cavity b, an annular flange protruding inwards is arranged at the upper end of the outer cylinder, the upper end of the annular piston rod 33 penetrates through an annular opening between the inner cylinder and the annular flange of the outer cylinder, an annular piston is arranged at the lower end of the annular piston rod 33, the annular piston at the lower end of the annular piston rod 33 divides the outer cavity b into a second rodless cavity and a second rod cavity, a second rodless cavity oil port 313 communicated with the lower part of the outer cavity b and a second rod cavity oil port 314 communicated with the upper part of the outer cavity b are arranged on the side wall of the outer cylinder. The annular piston rod 33 is extended when the second rod-less chamber oil port 313 is filled with oil, and the annular piston rod 33 is retracted when the second rod-less chamber oil port 314 is filled with oil. According to the plate forming testing machine, through the concentric hydraulic oil cylinder 3, the blank pressing and the stamping forming of the plate can be realized through one oil cylinder, so that the testing machine is more compact in structure. The concentric hydraulic cylinder 3 provides hydraulic power through a hydraulic power device. In this embodiment, the upper end of the cylinder 31 is provided with an external thread, the lower end of the lower shell 22 of the support housing 2 is provided with an internal thread matching with the external thread, and the upper end of the cylinder 31 is screwed to the lower end of the lower shell 22.

In order to facilitate the installation of the female die 41, a female die mounting seat 42 is provided at the top of the support housing 2, and the female die 41 is detachably connected to the female die mounting seat 42. In specific implementation, the female die mounting seat 42 is fixedly connected to the top of the support casing 2 through a plurality of screws circumferentially arranged, a female die mounting hole is formed in the center of the female die mounting seat 42, a plug-in portion matched with the female die mounting hole is arranged on the female die 41, and the female die 41 realizes centering by inserting the plug-in portion into the female die mounting hole. The female die 41 may be connected to the female die mount 42 by threaded or screw connection. The female die 41 is detachably connected with the female die mounting seat 42, so that different female dies 41 can be conveniently replaced to perform different plate forming tests.

Further, a first connecting flange 54, the punch force sensor 53, a punch mounting seat 52 and the punch 51 are sequentially connected to the top of the rod-shaped piston rod 32 from bottom to top. The top of the annular piston rod 33 is sequentially connected with a second connecting flange 65, a blank holder 64, the blank holder force sensor 63, a blank holder mounting seat 62 and the blank holder 61 from bottom to top.

Specifically, in this embodiment, the first connecting flange 54 is fixedly connected to the top of the rod-shaped piston rod 32 by a plurality of screws; the male die force value sensor 53 is a spoke type pressure sensor, and the male die force value sensor 53 is fixedly connected to the top of the first connecting flange 54 through a plurality of screws; the male die mounting seat 52 is in a cylindrical structure, a threaded column is convexly arranged at the bottom of the male die mounting seat 52, a threaded hole is formed in the center of the male die force value sensor 53, and the male die mounting seat 52 is in threaded connection with the male die force value sensor 53 through the threaded column; the top of the male die mounting seat 52 is provided with a butt joint blind hole, the bottom of the male die 51 is provided with a butt joint shaft, and the butt joint shaft of the male die 51 is inserted into the butt joint blind hole of the male die mounting seat 52 and is fixedly connected through a pin shaft. The male die 51 and the male die mounting seat 52 are detachably connected together, so that different male dies 51 can be conveniently replaced to perform different plate forming tests. In this embodiment, the second connection flange 65 is fixedly connected to the top of the annular piston rod 33 through a plurality of screws, a circular through hole is provided in the center of the second connection flange 65, and the second connection flange 65 is sleeved on the outside of the rod-shaped piston rod 32; the edge pressing cylinder 64 is of a cylindrical structure with two open ends, the edge pressing cylinder 64 is sleeved outside the first connecting flange 54, the male die force sensor 53, the male die mounting seat 52 and the male die 51, and the lower end of the edge pressing cylinder 64 is fixedly connected to the top of the second connecting flange 65 in a welding, clamping or threaded connection mode; the blank holder force sensor 63 is a spoke type pressure sensor, and the blank holder force sensor 63 is fixedly connected to the top of the blank holder cylinder 64 through a plurality of screws; the blank holder mounting seat 62 is fixedly connected to the top of the blank holder force sensor 63 through a plurality of screws; the center of blank holder mount pad 62 is equipped with the blank holder mounting groove, and blank holder 61 bottom be provided with blank holder mounting groove assorted grafting boss, blank holder 61 is through with grafting boss inserts establish realize centering in the blank holder mounting groove, blank holder 61 accessible threaded connection or screw connection's mode is connected on the blank holder mount pad 62. The blank holder 61 is detachably connected with the blank holder mounting seat 62, so that different blank holders 61 can be conveniently replaced to perform different sheet forming tests. The blank holder force sensor 63, the blank holder mounting seat 62 and the blank holder 61 are all in annular structures, and the blank holder force sensor 63, the blank holder mounting seat 62 and the blank holder 61 are all sleeved outside the male die 51. In this embodiment, a first through opening 211 is transversely formed on a side wall of the upper shell 21 of the support housing 2, and the first through opening 211 is used for placing a plate and facilitating observation of a plate forming process; a third through opening 222 is transversely formed in the side wall of the lower shell 22 of the support housing 2, and a through opening is also transversely formed in the side wall of the blank holder 64, so as to facilitate connection and fixation between the male die 51 and the male die mounting seat 52.

Further, the second connection flange 65 is located at a lower portion of the first connection flange 54, and a circular through hole in the center of the second connection flange 65 has a diameter smaller than an outer diameter of the first connection flange 54. So set up, when needs carry out the blank holder to panel when panel shaping test, control cyclic annular piston rod 33 stretches out and rises, drives blank holder 61 and rises and remove along with blank holder mount pad 62, blank holder force value sensor 63, blank holder section of thick bamboo 64 and second flange 65, and when second flange 65 risees to the butt when being connected to first flange 54 bottom, it rises to drive first flange 54 simultaneously, promptly drives terrace die 51 simultaneously and rises. After the blank holder 61 compresses the plate, the rod-shaped piston rod 32 is controlled to extend and rise continuously, and the male die 51 is driven to punch and form the plate. After the plate is formed, the piston rod is controlled to retract and descend, the male die 51, the male die mounting seat 52, the male die force sensor 53 and the first connecting flange 54 are driven to descend together, and when the first connecting flange 54 descends to be abutted to the top of the second connecting flange 65, the second connecting flange 65 is driven to descend, namely the blank holder 61 is synchronously driven to descend. By the arrangement, part of time is synchronously performed in the moving process of the blank holder 61 and the male die 51, so that the time is saved and the efficiency is improved.

Further, the support housing 2 is further provided with a first displacement sensor 71 for measuring the displacement of the punch 51 and a second displacement sensor 72 for measuring the displacement of the bead 61. Wherein, the first displacement sensor 71 and the second displacement sensor 72 are both stay cord displacement sensors; two mounting seats are arranged on the outer side wall of the support shell 2, the fixed ends of the two stay rope displacement sensors are respectively and fixedly connected to the two mounting seats, and the stay rope ends of the two stay rope displacement sensors are respectively connected to the first connecting flange 54 and the blank holder 64. Specifically, a first pull rope connecting rod 55 is transversely fixed on the first connecting flange 54, a second through opening 221 is transversely formed on the side wall of the lower shell 22 of the support shell 2, a through opening is correspondingly formed on the blank holder cylinder 64, and the first pull rope connecting rod 55 sequentially penetrates through the through opening on the blank holder cylinder 64 and the second through opening 221 on the lower shell 22 and extends to the outside of the support shell 2; a second stay cord connecting rod 66 is transversely fixed on the blank holder cylinder 64, and the second stay cord connecting rod 66 passes through a second through opening 221 on the lower shell 22 and extends to the outside of the support shell 2. The pull rope ends of the two pull rope displacement sensors are respectively and correspondingly connected to the first pull rope connecting rod 55 and the second pull rope connecting rod 66. In the present embodiment, the first displacement sensor 71 and the second displacement sensor 72 are disposed 180 degrees apart in the circumferential direction of the support housing 2.

In order to prevent the blank holder 61 from rotating during lifting, a guiding optical axis is further provided on the support housing 2, and a guiding hole is correspondingly provided on the blank holder mounting seat 62, and the guiding optical axis is inserted into the guiding hole. In this embodiment, two guide optical axes are provided, and both the two guide optical axes are fixed on the die mounting seat 42 by screws, and the two guide optical axes are arranged at 180-degree intervals along the circumferential direction of the die mounting seat 42; the guide sleeve 621 is arranged in the guide hole, so that the guide optical axis slides in the guide hole more smoothly, and the friction force during sliding is reduced.

The sheet forming tester is further provided with a controller, and the punch force value sensor 53, the blank holder force value sensor 63, the first displacement sensor 71 and the second displacement sensor 72 are electrically connected with the controller. The top of the box body 1 is also provided with a display, the display is electrically connected with a controller, and when the board is formed and tested, the controller receives various data information measured by the male die force value sensor 53, the blank holder force value sensor 63, the first displacement sensor 71 and the second displacement sensor 72, and the controller processes the various data information and then displays the processed data information through the display.

In summary, the plate forming testing machine provided by the utility model has the advantages that the concentric hydraulic oil cylinder is arranged, the blank holder and the male die are respectively connected to the annular piston rod and the rod-shaped piston rod which are concentrically arranged, the uniform distribution of testing force in the plate forming test is ensured, the structure of the testing machine is more compact, and the body is small and light. Meanwhile, the plate forming testing machine measures the male die force value by arranging the male die force value sensor and the blank holder force value by arranging the blank holder force value sensor, and compared with the existing testing machine, the force value data calculated by adopting hydraulic oil pressure and oil cylinder area are more accurate.

It should be noted that in this document relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: it is apparent that the above examples are only illustrative of the present utility model and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims

1. The plate molding testing machine is characterized by comprising a box body and a molding assembly; wherein,

2. The sheet forming tester of claim 1, wherein the top of the support housing is provided with a die mount, the die being removably attached to the die mount.

3. The board forming test machine according to claim 1, wherein the top of the rod-shaped piston rod is sequentially connected with a first connecting flange, the male die force value sensor, a male die mounting seat and the male die from bottom to top;

4. The plate forming test machine according to claim 3, wherein a circular through hole is formed in the center of the second connecting flange, the second connecting flange is sleeved outside the rod-shaped piston rod, and the second connecting flange is located at the lower part of the first connecting flange;

5. The sheet molding machine of claim 3, wherein the blank holder force sensor, the blank holder mounting seat and the blank holder are all of annular structure, and the blank holder force sensor, the blank holder mounting seat and the blank holder are all sleeved outside the male die.

6. A sheet forming tester as claimed in claim 3 wherein the punch force sensor and the blank holder force sensor are spoke type pressure sensors.

7. A sheet forming tester as claimed in claim 3, wherein the support housing is further provided with a first displacement sensor for measuring displacement of the punch and a second displacement sensor for measuring displacement of the bead ring.

8. The sheet forming tester of claim 7, wherein the first and second displacement sensors are pull-cord displacement sensors;

9. The sheet molding testing machine of claim 3, wherein the support housing is further provided with a guide optical axis, the blank holder mounting seat is correspondingly provided with a guide hole, and the guide optical axis is inserted into the guide hole.

10. The sheet forming tester of claim 1, wherein the support housing includes an upper shell and a lower shell, the upper shell and the lower shell being detachably connected together, the lower shell being fixedly connected to a top plate of the box.