Multifunctional quick-change plate drawing friction coefficient measurement die

Abstract

The utility model provides a multifunctional quick-change plate drawing friction coefficient measurement die, comprising: a die base and a quick-change test module, the die base is provided with a mounting structure, the mounting structure is used to connect with a testing machine, the die base is provided with a first clamping mechanism, the quick-change test module is provided with a second clamping mechanism, the second clamping mechanism is connected with the first clamping mechanism to achieve a locking connection between the die base and the quick-change test module. The utility model has the advantages of simple operation, rapid replacement, easy maintenance, and improved accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and in particular to a multifunctional quick-change plate drawing friction coefficient measuring mold. Background Art

[0002] Friction behavior is a comprehensive reflection of the interaction between sheet metal and die during the stamping process, which directly affects the quality of stamping parts. The dynamic friction coefficient of sheet metal is a quantitative reflection of friction behavior.

[0003] In the field of simulation experiments, there are three main types of existing simulation experimental devices for measuring plate deep drawing friction: (1) flat plate sliding friction test method; (2) bending friction test method; (3) drawing forming friction test method.

[0004] The patent document with announcement number CN101493402B discloses a sheet forming drawing friction performance testing machine, which can complete the friction coefficient test test, drawbead constraint resistance test test and coating peeling test of coated plate (including high temperature test) in the metal sheet forming process. The testing machine is composed of three major parts: a frame, a chuck, and a testing device. Its advantage is that it is highly versatile and can complete three types of tests in different aspects of the metal sheet plastic forming process, and can perform high temperature tests for comparison. The disadvantage is that the male and female dies in its experimental device have a single function and are inconvenient to disassemble and replace.

[0005] Therefore, it is necessary to design a measuring mold that can realize different measurement functions and is convenient and quick to disassemble and replace. Utility Model Content

[0006] In response to the technical problems raised above, a multifunctional quick-change plate drawing friction coefficient measuring die is provided.

[0007] The technical means adopted by the utility model are as follows:

[0008] A multifunctional quick-change plate drawing friction coefficient measuring die comprises: a die base and a quick-change test module, the die base is provided with a mounting structure, the mounting structure is used to connect with a testing machine, the die base is provided with a first clamping mechanism, the quick-change test module is provided with a second clamping mechanism, the second clamping mechanism is connected with the first clamping mechanism to realize a locking connection between the die base and the quick-change test module.

[0009] Furthermore, the mold base includes a mold base body, the first clamping mechanism includes a locking structure, an assembly groove opened on one side of the mold base body, and a mounting hole opened on the mold base body, the mounting hole is connected to the assembly groove, the quick-change test module is slidably clamped in the assembly groove, the locking structure is provided with at least one group, the mounting hole is provided with at least one, and each locking structure is respectively placed in each mounting hole for cooperating with the second clamping mechanism.

[0010] Furthermore, the locking structure includes a screw plug, a spring and a push pin placed in the mounting hole, the push pin and the mounting hole are slidingly connected, one end of the spring is connected to the push pin, and the other end is connected to the screw plug, the screw plug is fixed to the mold base body, and the push pin and the spring are fixed inside the mounting hole by the screw plug; in the non-working state, the push pin extends out of the mounting hole into the assembly groove under the action of the spring.

[0011] Furthermore, the axis of the mounting hole is perpendicular to the assembly slot or forms a certain angle with the assembly slot.

[0012] Furthermore, the second clamping mechanism includes a three-way second assembly surface on the quick-change test module and a push pin clamping hole opened on the quick-change test module, and at least one push pin clamping hole is opened for mating and connecting with the push pin; the assembly groove has a three-way first assembly surface, and the three-way second assembly surface is in contact and connected with the three-way first assembly surface.

[0013] Furthermore, a quick-change operating hole is provided on the quick-change test module, and the quick-change operating hole is communicated with the ejector pin clamping hole.

[0014] Furthermore, the processing accuracy of the first assembly surface is less than IT6, and the roughness is lower than Ra0.8; the processing accuracy of the second assembly surface is less than IT6, and the roughness is lower than Ra0.8.

[0015] Furthermore, the mounting structure is a slot arranged on the other side of the mold base body.

[0016] Furthermore, the quick-change test module is at least a plane quick-change test module or a curved surface quick-change test module, the outer side surface of the plane quick-change test module away from the mold base is a plane, and the outer side surface of the curved surface quick-change test module away from the mold base is a curved surface.

[0017] The utility model also provides a method for using a multifunctional quick-change plate drawing friction coefficient measuring die, comprising the following steps:

[0018] S1. Install the measuring mold on the measuring device of the testing machine: prepare two mold bases when using, install the two mold bases on the left and right bases of the testing machine through the slots, and fix them with bolts;

[0019] S2. Install two quick-change test modules on two mold bases, with the flat quick-change test module installed on the left and the curved quick-change test module installed on the right;

[0020] S3. When installing each quick-change test module, squeeze the ejector pin and push the quick-change test module from the assembly slot into the mold base. When the ejector pin in the mold base pushes into the ejector pin hole of the quick-change test module, the quick-change test module is locked with the mold base.

[0021] S4. During operation, the testing machine drives the right measuring mold to move to the left, so that the measuring mold clamps the tested sample and provides a constant clamping force;

[0022] S5. After the work is completed, the testing machine drives the right measuring mold to detach, and uses the ejector tool to probe into the quick-change test module through the quick-change operation hole, squeeze the ejector pin on the mold base, gently push the quick-change test module to separate it from the mold base, and pull out the quick-change test module.

[0023] Compared with the prior art, the utility model has the following advantages:

[0024] 1. The utility model can conduct various types of experimental tests by quickly switching various test modules, which improves the experimental efficiency and avoids the experimental result errors caused by repeated disassembly and assembly. At the same time, the processing and preparation of the quick-change module is simpler and the cost is lower.

[0025] 2. Compared with the original test mold, the utility model has the advantages of simple operation, quick replacement, easy maintenance and improved precision.

[0026] Based on the above reasons, the utility model can be widely promoted in the fields of testing and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 It is a structural schematic diagram of the measuring mold of the utility model.

[0029] Figure 2 It is a schematic diagram of the connection between the flat quick-change test module and the mold base of the utility model.

[0030] Figure 3 It is a schematic diagram of the connection between the arc surface quick-change test module and the mold base of the utility model.

[0031] Figure 4 It is a structural schematic diagram of the mold base of the utility model.

[0032] Figure 5 It is a structural schematic diagram of the quick-change test module of the utility model.

[0033] Figure 6 This is a schematic diagram of the quick-change operation of the utility model.

[0034] In the figure: 1. Die base; 2. Quick-change test module; 3. Flat surface quick-change test module; 4. Arc surface quick-change test module;

[0035] 11. Die base body; 12. Screw plug; 13. Spring; 14. Ejector pin; 15. Slot; 16. Assembly slot; 17. First assembly surface;

[0036] 21. Second assembly surface; 22. Quick-change operation hole; 23. Ejector pin hole. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] The utility model provides a multifunctional quick-change plate drawing friction coefficient measuring die, which is a measuring die based on a plate drawing friction performance testing machine, capable of realizing different measurement functions and having a quick disassembly and replacement effect. It relates to the field of inspection and testing, and the field of plate drawing friction coefficient detection. The purpose of the utility model is to improve the efficiency of measurement experiments, improve experimental accuracy and facilitate the maintenance of experimental equipment. At the same time, the main advantage of the utility model is that different contact effects and experimental tests under different rough conditions can be quickly realized by quickly changing different test modules.

[0039] like Figure 1 As shown, a multifunctional quick-change plate drawing friction coefficient measuring die of the utility model comprises a die base 1 and a quick-change test module 2.

[0040] As a preferred embodiment, the mold base 1 is composed of a mold base body 11, a push pin 14, a spring 13, a screw plug 12 and other structures. Figure 2 and Figure 3, an assembly groove 16 is provided on one side of the mold base body 11, and a mounting hole is also provided on the mold base body 11. The ejector pin 14, the spring 13, and the screw plug 12 are placed in the mounting hole. There is at least one set of ejector pin 14, the spring 13, and the screw plug 12, and at least one mounting hole is provided. The axis of the mounting hole forms a certain angle with the elongation direction of the assembly groove 16, and the mounting hole is connected to the assembly groove 16. The quick-change test module 2 is connected in the assembly groove 16 by a sliding card connection. One end of the spring 13 is connected to the ejector pin 14, and the other end is connected to the screw plug 12. The screw plug 12 is fixedly connected to the mold base body 11. The ejector pin 14 is in a sliding relationship with the mold base body 11, and is supported by the spring 13. At the same time, the ejector pin 14 and the spring 13 are fixed inside the mold base body 11 by the screw plug 12. In the non-working state, the ejector pin 14 extends out of the mounting hole to the assembly groove 16 under the action of the spring 13.

[0041] As a preferred embodiment, the mold base 1 includes a slot 15 and a first assembly surface 17. Figure 4 The slot 15 structure of the mold base 1 is connected to the experimental machine, and the slot 15 structure can be designed differently according to different experimental equipment. The mold base 1 has a three-way first assembly surface 17. To ensure a good match, the processing accuracy of the first assembly surface 17 should be less than IT6, and the roughness should be less than Ra0.8.

[0042] The quick-change test module 2 can be prefabricated into different shapes according to different working conditions, such as Figure 1 As shown, it includes but is not limited to a plane type, a curved surface type, etc. That is, the quick-change test module 2 can be a plane quick-change test module 3, a curved surface quick-change test module 4, or a quick-change test module of other shapes, wherein the outer side surface of the plane quick-change test module 3 away from the mold base 1 is a plane, and the outer side surface of the curved surface quick-change test module 4 away from the mold base 1 is a curved surface.

[0043] As a preferred embodiment, the quick-change test module 2 has a three-way second assembly surface 21, see Figure 5 The three-way second assembly surface 21 is in contact with the three-way first assembly surface 17. To ensure a good match, the machining accuracy of the second assembly surface 21 should be below IT6, and the roughness should be lower than Ra0.8.

[0044] As a preferred embodiment, the quick-change test module 2 has a connected quick-change operation hole 22 and a top pin clamping hole 23, and the quick-change operation hole 22 is inclined. Figure 6 The ejector pin 14 in the ejector pin clamping hole 23 can be operated through the quick-change operation hole 22 using a tool such as an ejector pin.

[0045] The mold base 1 and the quick-change test module 2 are in a sliding fit relationship. During operation, the ejector pin 14 is squeezed and the quick-change test module 2 is pushed into the mold base 1 through the assembly groove 16. When the ejector pin 14 in the mold base 1 is pushed into the ejector pin hole 23 of the quick-change test module 2, the quick-change test module 2 and the mold base 1 are locked.

[0046] When disassembling the quick-change, a tool such as an ejector pin is used to penetrate through the quick-change operation hole 22 to squeeze the ejector pin 14 and simultaneously pull out the quick-change test module 2 .

[0047] The utility model also provides a method for using a multifunctional quick-change plate drawing friction coefficient measuring die, comprising the following steps:

[0048] S1. The measuring mold of the utility model needs to work with the testing machine, and the measuring mold needs to be installed on the measuring device of the testing machine. When using it, two mold bases 1 need to be prepared, and the two mold bases 1 are respectively installed on the left and right bases of the testing machine and fixed with bolts.

[0049] S2, when working, install two quick-change test modules 2, and select the appropriate type of quick-change test module 2 according to the experimental content, such as Figure 2 and Figure 3 As shown, the flat quick-change test module 3 is selected on the left, and the curved quick-change test module 4 is selected on the right. At the same time, the roughness of the module can also be selected according to actual needs.

[0050] S3, when installing each quick-change test module 2, squeeze the ejector pin 14 and push the quick-change test module 2 from the assembly groove 16 into the mold base 1. When the ejector pin 14 in the mold base 1 is pushed into the ejector pin hole 23 of the quick-change test module 2, the quick-change test module 2 is locked with the mold base 1.

[0051] S4. During operation, the testing machine drives the right measuring mold to move to the left, so that the measuring mold clamps the tested sample and provides a constant clamping force.

[0052] S5. After the work is completed, the testing machine drives the right measuring mold to detach, and uses a tool such as an ejector pin to probe into the quick-change test module 2 through the quick-change operation hole 22, squeezes the ejector pin 14 on the die base 1, gently pushes the quick-change test module 2 to separate it from the die base 1, and pulls out the quick-change test module 2.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A multifunctional quick-change plate drawing friction coefficient measurement die, characterized in that: include: A mold base (1) and a quick-change test module (2), wherein the mold base (1) is provided with a mounting structure, the mounting structure is used to be connected to a testing machine, the mold base (1) is provided with a first clamping mechanism, the quick-change test module (2) is provided with a second clamping mechanism, the second clamping mechanism is connected in cooperation with the first clamping mechanism to achieve a locking connection between the mold base (1) and the quick-change test module (2); The mold base (1) comprises a mold base body (11), the first clamping mechanism comprises a locking structure, an assembly groove (16) provided on one side of the mold base body (11), and a mounting hole provided on the mold base body (11), the mounting hole is connected to the assembly groove (16), the quick-change test module (2) is slidably clamped in the assembly groove (16), at least one group of locking structures is provided, at least one mounting hole is provided, and each locking structure is respectively placed in each mounting hole for being matched with the second clamping mechanism for connection; The locking structure comprises a screw plug (12), a spring (13) and a push pin (14) placed in the mounting hole, the push pin (14) and the mounting hole are connected by sliding fit, one end of the spring (13) is connected to the push pin (14), and the other end is connected to the screw plug (12), the screw plug (12) is fixedly connected to the mold base body (11), and the push pin (14) and the spring (13) are fixed inside the mounting hole by the screw plug (12); in a non-working state, the push pin (14) extends out of the mounting hole to the assembly groove (16) under the action of the spring (13); The second clamping mechanism comprises a three-way second assembly surface (21) on the quick-change test module (2) and a push pin clamping hole (23) provided on the quick-change test module (2), wherein at least one push pin clamping hole (23) is provided for being matched and connected with the push pin (14); a three-way first assembly surface (17) is provided in the assembly groove (16), and the three-way second assembly surface (21) is in contact and connected with the three-way first assembly surface (17).

2. The multifunctional quick-change plate drawing friction coefficient measuring die according to claim 1 is characterized in that: The axis of the mounting hole is perpendicular to the assembly groove (16) or forms a certain angle with the assembly groove (16).

3. The multifunctional quick-change plate drawing friction coefficient measuring die according to claim 1 is characterized in that: The quick-change test module (2) is also provided with a quick-change operation hole (22), and the quick-change operation hole (22) is connected to the ejector pin clamping hole (23).

4. The multifunctional quick-change plate drawing friction coefficient measuring die according to claim 3 is characterized in that: The machining accuracy of the first assembly surface (17) is below IT6, and the roughness is lower than Ra0.8; the machining accuracy of the second assembly surface (21) is below IT6, and the roughness is lower than Ra0.

8.

5. The multifunctional quick-change plate drawing friction coefficient measuring die according to claim 1 is characterized in that: The mounting structure is a slot (15) arranged on the other side of the mold base body (11).

6. The multifunctional quick-change plate drawing friction coefficient measuring die according to claim 1, characterized in that: The quick-change test module (2) is at least a plane quick-change test module (3) or a curved surface quick-change test module (4); the outer side surface of the plane quick-change test module (3) away from the mold base (1) is a plane, and the outer side surface of the curved surface quick-change test module (4) away from the mold base (1) is a curved surface.

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