Plate bending performance detection device

Abstract

The utility model relates to the technical field of manual press machines, in particular to a plate bending performance detection device which comprises a base, an installation pipe is fixedly installed at the upper end of the base, a positioning groove is formed in the side wall of the installation pipe, a pressure rod is slidably installed in the installation pipe, and a zero position pipe is slidably installed on the side wall of the installation pipe in the axial direction. A zero setting knob is rotatably mounted at the lower end of the mounting pipe and is in threaded connection with the outer side of the zero-position pipe, a fixing screw is in threaded connection with the end face of the zero setting knob, one end of the fixing screw abuts against the mounting pipe, a positioning bolt is in threaded connection with the inner side of the zero-position pipe, and a scale plate is fixedly mounted at the upper end of the zero-position pipe and is slidably mounted in the positioning groove; positioning plates are fixedly installed on the side faces of the pressure rods. Through zero adjustment of the zero position pipe and position limitation of the positioning bolt and the positioning plate, the distance is enabled to be adaptive to the thickness of the to-be-detected plate, and the possibility of forming shearing on the to-be-detected plate by die edges is reduced.

Description

Technical Field

[0001] This application relates to the technical field of manual presses, and in particular to a device for testing the bending performance of sheet metal. Background Technology

[0002] Testing the bending performance of sheet metal can examine its fracture resistance, springback, and bending strength. Currently, a simple test of sheet metal bending performance mainly involves using a manual press with appropriate dies to fold the sheet in half or into V-shapes, M-shapes, etc., to test its relevant properties. However, existing manual presses cannot effectively control the degree of bending during pressing, which may cause some sheet metal to break under the shear force created by the high pressure and the die edges, resulting in distorted experimental results. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this application is to provide a sheet metal bending performance testing device that improves the above-mentioned problems.

[0004] The above-mentioned objective of this application is achieved through the following technical solution:

[0005] A sheet metal bending performance testing device, comprising:

[0006] A base, wherein a mounting groove is provided on the upper surface of the base;

[0007] A support arm, which is fixedly connected to the upper end of the base;

[0008] The mounting tube is fixedly installed on the support arm, with its axis facing the mounting groove and a positioning groove provided on its side wall.

[0009] A pressure rod, which is slidably mounted inside the mounting tube, and a rack is provided on one side of the pressure rod;

[0010] A drive handwheel is rotatably mounted on the support arm, and a drive gear is fixedly connected to the output shaft of the drive handwheel, the drive gear meshing with the rack;

[0011] A zero-position tube is slidably mounted on the side wall of the mounting tube along the axial direction of the mounting tube, and the upper end of the zero-position tube is located in the positioning groove;

[0012] A zero-adjustment knob is rotatably mounted on the lower end of the mounting tube, and the zero-adjustment knob is threaded to the outside of the zero-position tube;

[0013] A fixing screw is threaded onto the end face of the zero-adjustment knob, and one end of the fixing screw abuts against the mounting tube;

[0014] A positioning bolt, which is threadedly connected to the inside of the zero-position tube;

[0015] A ruler plate is fixedly installed on the upper end of the zero-position tube, and the ruler plate is slidably installed in the positioning groove;

[0016] A positioning plate is fixedly installed on the side of the pressure rod, and the positioning plate passes through the positioning groove.

[0017] Optionally, an installation part is fixedly installed on the outside of the installation tube, and the zero-position tube and positioning groove are disposed in the installation part.

[0018] Optionally, the side wall of the positioning groove is provided with a sliding groove, and the scale plate is slidably installed in the sliding groove.

[0019] Optionally, a pointer is rotatably mounted on the upper end of the positioning bolt, and both ends of the pointer are slidably mounted on the scale plate.

[0020] Optionally, the pressure rod includes a drive section mounted on the mounting tube, and an adjustment section is threadedly connected to the lower end of the drive section.

[0021] Optionally, a constant force spring is fixedly connected to the lower end of the pressure rod, a constant force rod is fixedly connected to the lower end of the constant force spring, a constant force tube is threadedly connected to the constant force rod, and a limit ring is fixedly connected to the outer side of the pressure rod.

[0022] Optionally, an axial rod is slidably mounted on the lower end of the pressure rod, and the lower end of the axial rod is fixedly connected to the constant force rod.

[0023] Optionally, leveling screws are provided at the bottom corners of the base.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] By adjusting the zero position tube and limiting the position of the positioning bolt and positioning plate, the downward distance of the pressure rod is made to be the extension length of the positioning bolt from the top of the zero position tube. This controls the downward distance of the pressure rod so that it is adapted to the thickness of the plate to be inspected, reducing the possibility of shearing by the mold edges.

[0026] By setting a constant force tube and a limiting ring, the pressure rod and the constant force rod can only compress a fixed distance. A constant force spring is set between the pressure rod and the constant force rod. Since the compression distance between the pressure rod and the constant force rod is constant, the elastic force of the constant force spring is a fixed value. By rotating the constant force tube to change the compression distance between the pressure rod and the constant force rod, the downward pressure can be controlled by the constant force spring. When the limiting ring is in contact with the upper end of the constant force tube, the maximum downward pressure is reached. Attached Figure Description

[0027] Figure 1This is a schematic diagram of the overall structure of an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of the installation part in an embodiment of this application;

[0029] Figure 3 This is a schematic diagram of the constant force spring portion in an embodiment of this application.

[0030] Reference numerals: 1. Base; 11. Mounting slot; 12. Leveling screw;

[0031] 2. Support arm;

[0032] 3. Mounting pipe; 31. Positioning groove; 32. Mounting part;

[0033] 41. Pressure rod; 411. Drive section; 412. Adjustment section; 413. Force spring; 414. Force rod; 415. Force tube; 416. Limiting ring; 417. Axial rod; 42. Drive handwheel;

[0034] 51. Zero-position tube; 52. Zero-adjustment knob; 53. Fixing screw; 54. Positioning bolt; 541. Pointer; 55. Scale plate; 56. Positioning plate. Detailed Implementation

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] Please see Figures 1-2 This application discloses a sheet metal bending performance testing device, comprising a base 1, an mounting groove 11 on the upper surface of the base 1, a support arm 2 fixedly mounted on the upper end of the base 1, and a mounting tube 3 fixedly mounted on the support arm 2. The axis of the mounting tube 3 is directly opposite to the mounting groove 11, and a positioning groove 31 is formed on the side wall of the mounting tube 3. A pressure rod 41 is slidably mounted inside the mounting tube 3, and a rack is provided on one side of the pressure rod 41. A drive handwheel 42 is rotatably mounted on the support arm 2, and a drive gear is fixedly connected to the output shaft of the drive handwheel 42. The drive gear meshes with the rack, and the side wall of the mounting tube 3 is aligned with the axis of the drive handwheel 42. A zero-position tube 51 is slidably installed, with its upper end located in the positioning groove 31. A zero-adjustment knob 52 is rotatably installed at the lower end of the mounting tube 3. The zero-adjustment knob 52 is threaded to the outside of the zero-position tube 51, and a fixing screw 53 is threaded to the end face of the zero-adjustment knob 52. One end of the fixing screw 53 abuts against the mounting tube 3. A positioning bolt 54 is threaded to the inside of the zero-position tube 51. A scale plate 55 is fixedly installed at the upper end of the zero-position tube 51 and is slidably installed in the positioning groove 31. A positioning plate 56 is fixedly installed on the side of the pressure rod 41 and passes through the positioning groove 31.

[0037] Specifically, a positioning groove 31 is set in the installation pipe 3, and a zero-position pipe 51 is set at the bottom of the positioning groove 31. By adjusting the zero-position pipe 51 to abut against the positioning plate 56 at the initial position, the positioning bolt 54 is adjusted to extend a fixed length, and the positioning plate 56 is restricted at this height.

[0038] In this way, by adjusting the zero position tube 51 and limiting the position of the positioning bolt 54 and the positioning plate 56, the pressure rod 41 is lowered by a distance equal to the extension length of the positioning bolt 54 from the top of the zero position tube 51. This controls the lowering distance of the pressure rod 41, making the distance suitable for the thickness of the plate to be inspected and reducing the possibility of shearing by the mold edges.

[0039] In some feasible methods, the mounting groove 11 is a T-shaped groove, which is used to install the mold used for testing. The pressure rod 41 is a cylindrical rod, and the support arm 2 fixes the mounting tube 3 to the base 1. The base 1, mounting groove 11, mounting tube 3, pressure rod 41, drive handwheel 42, rack and drive gear are existing technologies and will not be described in detail here. To facilitate stable placement, leveling screws 12 are provided at the bottom corner of the base 1.

[0040] The mounting slot 11 is a rectangular slot. The zero-position tube 51 has threaded round tubes on both the inner and outer sides. The scale plate 55 is a rectangular plate with a rectangular hole in the center. The scale plate 55 has a scale and is slidably connected to both sides of the mounting slot 11. The zero adjustment knob 52 is an I-shaped wheel. The bottom side of the mounting slot 11 is locked in the middle of the zero adjustment knob 52, so that the zero adjustment knob 52 is rotated and installed on the bottom side of the mounting slot 11. When the zero adjustment knob 52 is rotated, the zero-position tube 51 slides along the axial direction. The fixing screw 53 is tightened to fix the position of the zero adjustment knob 52 after the zero adjustment knob 52 is rotated to the position.

[0041] The positioning bolt 54 is installed inside the zero-position tube 51, and the upper end of the positioning bolt 54 is marked with a scale plate 55.

[0042] In use, after installing the experimental mold in the mounting slot 11 and the lower end of the pressure rod 41, press down the pressure rod 41 to make the two parts of the mold fit together. Rotate the positioning bolt 54 to make the pointer 541 fit against the upper end of the zero tube 51. Rotate the zero adjustment knob 52 to make the zero tube 51 move the positioning plate 56 on the upper end of the positioning bolt 54 to the lower side. Fix the position of the zero adjustment knob 52 with the fixing screw 53 to reset the pressure rod 41. Rotate the positioning bolt 54 to adjust to a suitable height. When pressing down the pressure rod 41 again, the positioning plate 56 will be restricted to the position of the upper end of the positioning bolt 54, reducing the possibility of excessive pressure on the pressure rod 41.

[0043] As one specific embodiment of the sheet metal bending performance testing device provided in the application, please refer to Figure 2 An installation part 32 is fixedly installed on the outside of the installation tube 3, and the zero position tube 51 and the positioning groove 31 are set in the installation part 32.

[0044] Overall, by setting The mounting section 32 increases the wall thickness of the part of the mounting tube 3 with the positioning groove 31, which facilitates the installation of parts such as the zero-position tube 51.

[0045] In some feasible embodiments, the mounting part 32 is a rectangular block, the side wall of the positioning groove 31 is provided with a sliding groove, and the scale plate 55 is slidably mounted in the sliding groove.

[0046] Furthermore, a pointer 541 is rotatably mounted on the upper end of the positioning bolt 54, and both ends of the pointer 541 are slidably mounted on the scale plate 55.

[0047] It should be understood that by setting pointer 541, the scale of the ruler plate 55 can be clearly indicated.

[0048] As provided in the application A sheet metal bending performance testing device Another specific implementation method, Please see Figure 1 The pressure rod 41 includes a drive section 411 installed on the mounting tube 3, and an adjustment section 412 is threadedly connected to the lower end of the drive section 411.

[0049] Depending on the specific application scenario, the length of the pressure rod 41 can be adjusted by setting the threaded connection adjustment section 412, making it suitable for test molds of different heights.

[0050] As provided in the application A sheet metal bending performance testing device One specific implementation method, Please see Figure 3 A constant force spring 413 is fixedly connected to the lower end of the pressure rod 41, a constant force rod 414 is fixedly connected to the lower end of the constant force spring 413, a constant force tube 415 is threadedly connected to the constant force rod 414, and a limit ring 416 is fixedly connected to the outer side of the pressure rod 41.

[0051] It should be understood that by setting the constant force tube 415 and the limiting ring 416, the pressure rod 41 and the constant force rod 414 can only compress a fixed distance. A constant force spring 413 is set between the pressure rod 41 and the constant force rod 414. Since the compression distance between the pressure rod 41 and the constant force rod 414 is constant, the elastic force of the constant force spring 413 is a fixed value. By rotating the constant force tube 415 to change the compression distance between the pressure rod 41 and the constant force rod 414, the downward pressure can be controlled by the constant force spring 413. When the limiting ring 416 is in contact with the upper end of the constant force tube 415, the maximum downward pressure is reached.

[0052] In some feasible embodiments, the lower end of the pressure rod 41 is threaded with a connecting rod, which is fixedly connected to the upper end of the constant force spring 413, allowing for disassembly when the constant force spring 413 is no longer needed.

[0053] Furthermore, an axial rod 417 is slidably mounted on the lower end of the pressure rod 41, and the lower end of the axial rod 417 is fixedly connected to the constant force rod 414.

[0054] It should be understood that by setting the axial rod 417, the radial fixation of the pressure rod 41 and the constant force rod 414 at the connection position of the constant force spring 413 is increased, reducing the possibility of bending during the downward pressing process.

[0055] In some feasible embodiments, the force bar 414 is a threaded bar, and the force tube 415 is threaded to its outer side.

[0056] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for testing the bending performance of sheet metal, characterized in that, The utility model provides a kind of pressure gauge, including: Base (1), the upper end surface of the base is provided with mounting groove (11); Supporting arm (2), the supporting arm (2) is fixedly connected to the upper end of the base (1); Mounting pipe (3), the mounting pipe (3) is fixedly installed on the supporting arm (2), the mounting pipe (3) axis is opposite the mounting groove (11), the side wall of the mounting pipe (3) is equipped with positioning groove (31); Pressure rod (41), the pressure rod (41) is slidably installed in the mounting pipe (3), one side of the pressure rod (41) is provided with rack; Driving hand wheel (42), the driving hand wheel (42) is rotatably installed on the supporting arm (2), the output shaft of the driving hand wheel (42) is fixedly connected with driving gear, and the driving gear is engaged with the rack; Zero position pipe (51), the zero position pipe (51) is slidably installed in the side wall of the mounting pipe (3) along the axial direction of the mounting pipe (3), and the upper end of the zero position pipe (51) is located in the positioning groove (31); Zero adjustment knob (52), the zero adjustment knob (52) is rotatably installed on the lower end of the mounting pipe (3), and the zero adjustment knob (52) is threadedly connected to the outside of the zero position pipe (51); Fixing screw (53), the fixing screw (53) is threadedly connected to the end face of the zero adjustment knob (52), and one end of the fixing screw (53) abuts on the mounting pipe (3); Positioning bolt (54), the positioning bolt (54) is threadedly connected to the inside of the zero position pipe (51); Scale plate (55), the scale plate (55) is fixedly installed on the upper end of the zero position pipe (51), and the scale plate (55) is slidably installed in the positioning groove (31); Positioning plate (56), the positioning plate (56) is fixedly installed on the side of the pressure rod (41), and the positioning plate (56) penetrates the positioning groove (31).

2. The plate bending performance detection device according to claim 1, characterized in that: The mounting pipe (3) is fixedly installed with mounting portion (32) outside, and the zero position pipe (51) and the positioning groove (31) are arranged in the mounting portion (32).

3. The plate bending performance detection device according to claim 2, characterized in that: The side wall of the positioning groove (31) is provided with a sliding groove, and the scale plate (55) is slidably installed in the sliding groove.

4. The plate bending performance detection device according to claim 3, characterized in that: The upper end of the positioning bolt (54) is rotatably provided with a pointer (541), and the two ends of the pointer (541) are slidably installed in the scale plate (55).

5. The plate bending performance detection device according to claim 1, characterized in that: The pressure rod (41) includes a driving segment (411) mounted to the mounting pipe (3), and the driving segment (411) is threadedly connected with an adjusting segment (412) at the lower end.

6. The plate bending performance detection device according to claim 1, characterized in that: The lower end of the pressure rod (41) is fixedly connected with a constant force spring (413), the lower end of the constant force spring (413) is fixedly connected with a constant force rod (414), the constant force rod (414) is threadedly connected with a constant force pipe (415), and the outer side of the pressure rod (41) is fixedly connected with a limiting ring (416).

7. The plate bending performance detection device according to claim 6, characterized in that: The lower end of the pressure rod (41) is slidably installed with an axial rod (417), and the lower end of the axial rod (417) is fixedly connected to the constant force rod (414).

8. The plate bending performance detection device according to claim 1, characterized in that: The lower corners of the base (1) are provided with leveling screws (12).

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