Bending experiment device for flat wire
By using the combination of base, downward part, limit ring and roller shaft in the bending experimental device, the problem of side slippage of flat wire during bending is solved, and the bending performance and angle of flat wire is accurately measured. Improves the accuracy and cost-effectiveness of the experiment.
Patent Information
- Application Number
- CN202323558797.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-25
AI Technical Summary
Existing bending machines are difficult to accurately measure the bending performance and bending angle of flat wires, because flat wires are prone to slip sideways during bending and cannot effectively apply pressure to the wide surface, resulting in inaccurate measurement results.
A bending experiment device including a base, a downward part, a limit ring and a roller shaft was designed. By setting downward part and a limit ring on the tensile tester, the narrow surface of the flat wire is always subjected to force and limit position. The ring is fixed to the outer circumference of the roller shaft to prevent side slipping and simulate the bending state in actual use.
It improves the accuracy of the bending experiment, can accurately measure the bending performance and maximum bending angle of the flat wire, and reduces the experimental cost.
Smart Images
Figure CN222166771U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bending machinery, in particular to a bending experimental device for flat wires. Background Art
[0002] In the piston ring production industry, it is necessary to conduct bending experiments on wires to measure the bending performance of the experimental wires. Bending is the elastic deformation of the wires under the pressure of the upper or lower die of the bending machine, followed by plastic deformation. During the plastic deformation process, the wires are first bent freely. As the upper or lower die applies pressure to the material, the bending angle of the wires becomes larger and larger, while the radius of curvature and the bending arm gradually decrease. The pressure is continued until the stroke ends or the wire breaks. At this time, the wires complete a V-shaped bend. By measuring the bending angle of the wires, it is measured whether the maximum bending angle and bending performance of the wires can meet the requirements.
[0003] Most existing bending machines are for round tubes. For rectangular flat wires with a cross-section of approximately 4mmX2mm, such as piston rings, and wires with narrow bending surfaces, it is not possible to perform bending experiments well and obtain accurate measurement results. When existing bending machines bend the narrow side of flat wires, the existing fixtures cannot apply pressure to the wide side of the flat wires, making it easy for the flat wires to slide sideways during the bending process, changing the bending surface of the flat wires from narrow to wide, and failing to accurately simulate the bending state of the flat wires during use, resulting in the inability to accurately measure the bending performance and bending angle of the flat wires. Utility Model Content
[0004] In order to solve the problem that flat wires are prone to side slipping during the bending process and the bending state of the flat wires cannot be accurately measured during actual use, the utility model provides a flat wire bending test device. The specific technical solution is as follows:
[0005] A flat wire bending test device, characterized in that it includes a base, the support surface of the base is placed on the test platform of a tensile testing machine, and the opposite surface of the base is formed with a groove; a pressing piece is arranged above the groove; at least four limit rings are symmetrically arranged on both sides of the groove, and the limit rings are arranged in parallel in pairs and the axes are parallel to the length direction of the groove.
[0006] Preferably, when the pressing member moves toward the groove, the free end of the pressing member can be placed in the groove, and the axis of the pressing member is perpendicular to the surface opposite to the support surface of the base.
[0007] Preferably, the utility model further comprises at least two fixed platforms arranged on opposite sides of the base support surface and symmetrically arranged on both sides of the groove, and the fixed platforms comprise roller shafts, and the length direction of the roller shafts is parallel to the length direction of the grooves.
[0008] Preferably, at least two limiting rings are symmetrically arranged on the outer peripheral side of the roller shaft.
[0009] It can be seen from the above technical solution that the utility model has the following beneficial effects:
[0010] The utility model arranges a pressing piece at the telescopic end of the stretching machine and places the flat wire on a fixed platform, so that the stretching machine can be directly used to reduce the experimental cost when performing a bending experiment. At the same time, a limiting ring is arranged to limit the force-bearing surface of the flat wire to always be a narrow surface, and the limiting ring is fixedly connected to the outer peripheral side of the rotatable roller shaft, so that the flat wire can release the length stretched by the bending when being bent by the pressing piece, thereby accurately simulating the bending state of the flat wire such as the piston ring in actual use, thereby improving the accuracy of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the front view structure of an embodiment of the utility model;
[0012] Figure 2 It is a partial side view structural schematic diagram of an embodiment of the utility model.
[0013] In the picture: 1. Base, 2. Pressing piece, 3. Fixed platform, 4. Limiting ring, 5. Flat wire
[0014] 11. Groove, 31. Bearing seat, 32. Roller shaft. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.
[0016] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0017] like Figure 1As shown, an embodiment of the utility model includes a base 1, which is formed with a groove 11, and the cross-section of the groove 11 is V-shaped. A pressing piece 2 is arranged directly above the groove 11. The fixed end of the pressing piece 2 is connected to the free end of the stretching machine by bolts. The shape of the free end of the pressing piece 2 matches the groove 11, and the axis of the pressing piece 2 is perpendicular to the top surface of the base 1, so that the free end of the pressing piece 2 can be embedded in the groove 11 when the pressing piece 2 moves downward.
[0018] Secondly, two fixed platforms 3 are fixedly connected to the top surface of the base 1, and the fixed platform 3 includes a roller shaft 32 and a bearing seat 31 rotatably connected to its two ends. The axis of the roller shaft 32 is parallel to the length direction of the groove 11 and is symmetrically placed on both sides of the groove 11. The outer peripheral side surface of the roller shaft 32 is smooth and is placed with a flat wire 5.
[0019] like Figure 2 As shown, the embodiment of the utility model also includes a limit ring 4 placed on the outer peripheral side of the roller shaft 32, and the limit ring 4 is formed with threaded holes at radial equal angles, which is used to fix itself on the outer peripheral side of the roller shaft 32 by bolts, and a limit ring 4 is connected to a roller shaft 32, and the limit rings 4 are placed in parallel in pairs, and the gap between them is used to place a flat wire 5. The wide side of the flat wire 5 is in contact with the axial end face of the limit ring 4, so that the narrow side of the flat wire 5 can be fixed on the roller shaft 32.
[0020] When the stretching machine presses down the pressing piece 2, the pressing piece 2 whose axis is perpendicular to the top surface of the base 1 moves downward, and its free end adopts a shape similar to the shape of the groove 11. When the free end surface of the pressing piece 2 contacts the narrow surface of the flat wire 5, the limiting ring 4 limits the position of the flat wire 5 to prevent it from sliding sideways, so that its wide surface is subjected to force. When the pressing piece 2 continues to press down the narrow surface of the flat wire 5, its narrow surface is slidably connected with the roller shaft 32, and the roller shaft 32 is driven to rotate under the action of friction, so that the flat wire 5 can be bent smoothly until the flat wire 5 is completely fitted with the groove 11 or the flat wire 5 is broken, thereby measuring the bending performance of the tested flat wire 5.
[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A flat wire bending experimental device, It is characterized in that include A base (1), the support surface of the base (1) being placed on a test platform of a tensile testing machine, and a groove (11) being formed on the opposite surface of the base; A pressing member (2) disposed above the groove (11); At least four limiting rings (4) are symmetrically arranged on both sides of the groove (11); the limiting rings (4) are arranged in pairs in parallel and their axes are parallel to the length direction of the groove (11).
2. A bending test device according to claim 1, Features: When the pressing member (2) moves toward the groove (11), the free end of the pressing member (2) can be placed in the groove (11).
3. A bending test device according to claim 2, Features: The axis of the pressing member (2) is perpendicular to the surface opposite to the supporting surface of the base (1).
4. A bending test device according to claim 1, Features: It also comprises at least two fixed platforms (3) arranged on opposite sides of the support surface of the base (1) and symmetrically arranged on both sides of the groove (11); the fixed platform (3) comprises a roller shaft (32); the length direction of the roller shaft (32) is parallel to the length direction of the groove (11).
5. A bending test device according to claim 4, Features: At least two of the limiting rings (4) are symmetrically arranged on the outer peripheral side of the roller shaft (32).
6. A bending test device according to claim 1, Features: The groove (11) has a V-shaped cross section.