A destructive testing machine for disc springs

Abstract

The utility model discloses a disc spring destructive testing machine, including testing machine body, the inside installation of test cabin has by three -jaw chuck and servo motor's anti -rebound mechanism, the utility model relates to disc spring testing machine technical field, this disc spring destructive testing machine, through the pre -clamping of the clamping claw of three -jaw chuck from the bottom of disc spring, the process of three -jaw chuck to disc spring clamping, servo motor output fixed screw rod drive two chuck move in the moving groove of three -jaw chuck top, at this moment, two chuck provide the pressure of going out from the slot hole of disc spring center, further improve the stability and firmness of disc spring installation in three -jaw chuck top, prevent the elastic potential energy release of the remaining part after disc spring destructive test, and the elastic force of producing makes disc spring high -speed bounce, thereby avoid having the high -speed impact force disc spring to the measuring component of operator or testing machine body inside cause damage.

Description

Technical Field

[0001] This utility model relates to the technical field of disc spring testing machines, specifically a destructive testing machine for disc springs. Background Technology

[0002] Destructive testing of disc springs is a critical quality inspection aimed at evaluating their ultimate performance, verifying design reliability, and identifying failure modes. Disc spring destructive testing is typically performed on a universal testing machine or a dedicated servo-electric cylinder testing machine. The disc spring is loaded to a flattened state using the universal testing machine or servo-electric cylinder and held at a constant pressure for a certain period. Afterward, the universal testing machine or servo-electric cylinder is reset, the disc spring is allowed to recover, and its final height is measured.

[0003] After some disc springs are compressed, even if the disc springs undergo plastic deformation during destructive testing, the remaining elastic potential energy is still huge. At this time, the disc springs will suddenly bounce up or even fly out. The sudden bounce of the disc springs has a high impact speed and a large impact force, which can cause danger to the operators. At the same time, the fly-out disc springs can damage the testing machine body and its internal measuring equipment.

[0004] Therefore, this utility model provides a disc spring destructive testing machine to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a destructive testing machine for disc springs, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a disc spring destructive testing machine, comprising a testing machine body, a servo electric cylinder fixedly connected to the top of the testing machine body, a test pressure plate fixedly connected to the telescopic part of the servo electric cylinder, and a test chamber opened inside the testing machine body;

[0007] The test chamber is equipped with an anti-rebound mechanism consisting of a three-jaw chuck and a servo motor.

[0008] The anti-rebound mechanism includes a movable slot opened on the top of the three-jaw chuck, with chucks symmetrically slidably connected inside the movable slot, and a screw fixedly connected to the output end of the servo motor, with the screw and the two chucks threadedly connected.

[0009] The test chamber is equipped with a measuring mechanism.

[0010] Preferably, the inner sides of the jaws of the three-jaw chuck are arc-shaped.

[0011] Preferably, the screw has two sets of threads symmetrically arranged on its outer side, and the two sets of threads are arranged in opposite directions.

[0012] Preferably, a rubber pad is fixedly connected to the outer side of the clamp, and the rubber pad is threaded.

[0013] Preferably, the measuring mechanism includes support rods symmetrically fixedly connected inside the test chamber, positioning plates slidably connected to the outer sides of the two support rods, a support spring fixedly connected between the support rods and the positioning plates, an assembly clamp fixedly connected to the outer side of the positioning plates, and a reading head installed inside the assembly clamp.

[0014] Preferably, a hatch is hinged to the outer side of the testing machine body, the hatch and the testing chamber are positioned correspondingly, and protective nets are fixedly connected to the inner walls of both the testing chamber and the hatch.

[0015] Beneficial effects

[0016] This invention provides a destructive testing machine for disc springs. Compared with the prior art, it has the following advantages:

[0017] This destructive testing machine for disc springs uses a three-jaw chuck to pre-clamp the disc spring from the bottom. During the clamping process, a screw fixed to the output end of a servo motor drives two chucks to move in the moving slot at the top of the three-jaw chuck. At this time, the two chucks provide outward pressure from the slot in the center of the disc spring, further improving the stability and firmness of the disc spring mounted on the top of the three-jaw chuck. This prevents the disc spring from rebounding at high speed after the destructive test due to the release of residual elastic potential energy, thus avoiding injury to the operator from the high-speed impact of the disc spring and preventing damage to the measuring components inside the testing machine. Attached Figure Description

[0018] Figure 1 This is a perspective view of the external structure of this utility model;

[0019] Figure 2 This is a side view of the present invention;

[0020] Figure 3 This is a schematic diagram of the connection structure between the three-jaw chuck and the servo motor of this utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure between the chuck and the screw of this utility model;

[0022] Figure 5 This is a schematic diagram of the measuring mechanism of this utility model.

[0023] In the diagram: 1. Testing machine body; 2. Servo electric cylinder; 3. Testing pressure plate; 4. Testing chamber; 5. Three-jaw chuck; 6. Servo motor; 7. Anti-rebound mechanism; 701. Moving slot; 702. Clamp; 703. Screw; 8. Measuring mechanism; 801. Support rod; 802. Positioning plate; 803. Spring; 804. Assembly clamp; 805. Reading head; 9. Rubber pad; 10. Chamber door; 11. Protective net. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1:

[0026] Please see Figure 1-5 A disc spring destructive testing machine includes a testing machine body 1, a servo electric cylinder 2 fixedly connected to the top of the testing machine body 1, a test pressure plate 3 fixedly connected to the telescopic part of the servo electric cylinder 2, a test chamber 4 opened inside the testing machine body 1, and the test pressure plate 3 is located inside the test chamber 4.

[0027] The test chamber 4 is equipped with an anti-rebound mechanism 7 consisting of a three-jaw chuck 5 and a servo motor 6. The three-jaw chuck 5 is fixedly connected to the bottom of the inner cavity of the test chamber 4, and the servo motor 6 is fixedly connected to the back of the test machine body 1. The test pressure plate 3 and the three-jaw chuck 5 are positioned correspondingly. The output end of the servo motor 6 and the jaws of the three-jaw chuck 5 are not in a vertical or horizontal position.

[0028] The anti-rebound mechanism 7 includes a moving groove 701 opened on the top of the three-jaw chuck 5. The moving groove 701 is symmetrically slidably connected to the chuck 702. The output end of the servo motor 6 is fixedly connected to a screw 703. The screw 703 and the two chucks 702 are threadedly connected.

[0029] The inner sides of the jaws of the three-jaw chuck 5 are curved.

[0030] Two sets of threads are symmetrically arranged on the outer side of the screw 703, and the two sets of threads are arranged in opposite directions.

[0031] In this embodiment, during the destructive test of the disc spring, the disc spring is placed on top of the three-jaw chuck 5. The three-jaw chuck 5 consists of a bevel ring, a bevel gear, and jaws. When fixing the disc spring, the servo motor 6 drives the screw 703 fixed at its output end to rotate. At this time, the screw 703 drives the bevel gear to rotate inside the three-jaw chuck 5. Simultaneously, the outer side of the bevel ring is provided with a threaded groove. As the bevel gear on the outer side of the screw 703 rotates, the bevel ring meshing with the bevel gear rotates, thereby causing the jaws to move on top of the three-jaw chuck 5. The three sets of jaws moving towards the center of the three-jaw chuck 5 center and pre-clamp the bottom side of the disc spring. During the rotation of the screw 703 inside the three-jaw chuck 5, since the outer side of the screw 703 is provided with two sets of opposing threads, the two chucks 702 move in opposite directions in the moving groove 701 at the top of the three-jaw chuck 5. The two chucks 702 provide outward support to the slot at the center of the disc spring. To enhance the stability and firmness of the disc spring fixed to the top of the three-jaw chuck 5, after the disc spring is fixed to the top of the three-jaw chuck 5, the servo electric cylinder 2 drives the test pressure plate 3 fixed to the telescopic part to descend, thereby pressing the top of the three-jaw chuck 5 and flattening the disc spring. After the disc spring is flattened, the servo electric cylinder 2 drives the test pressure plate 3 to reset. After the disc spring has undergone destructive testing, the plastically deformed disc spring still stores some elastic potential energy. The three-jaw chuck 5 and the chuck 702 are used to double-clamp and fix the disc spring to prevent the spring force generated by the delayed rebound from causing the disc spring to suddenly bounce up. This avoids the disc spring with high-speed impact force from hitting the test personnel or the internal parts of the testing machine body 1. This prevents the bounced disc spring from injuring the test personnel and also prevents the ejected disc spring from damaging the testing machine body 1 and its internal parts. Since the inner side of the jaws at the top of the three-jaw chuck 5 is arc-shaped, the stability of the three-jaw chuck 5 in clamping the disc spring is improved.

[0032] A rubber pad 9 is fixedly connected to the outside of the chuck 702, and the rubber pad 9 is threaded.

[0033] In this embodiment, the threaded rubber pad 9 increases the friction between the chuck 702 and the central slot of the disc spring, and the rubber pad 9 further improves the firmness of the chuck 702 in clamping the disc spring.

[0034] The test chamber 4 is equipped with a measuring mechanism 8. The measuring mechanism 8 includes support rods 801 that are symmetrically fixedly connected inside the test chamber 4. Positioning plates 802 are slidably connected to the outside of the two support rods 801. A support spring 803 is fixedly connected between the support rods 801 and the positioning plates 802. An assembly clamp 804 is fixedly connected to the outside of the positioning plates 802. A reading head 805 is installed inside the assembly clamp 804. The reading head 805 is a Heidenhain LC101.

[0035] In this embodiment, before placing the disc spring on top of the three-jaw chuck 5, the positioning plate 802 on the outside of the sliding support rod 801 is positioned. At this time, the support spring 803 is in a compressed state. After raising the positioning plate 802 to a certain height, the disc spring is placed on top of the three-jaw chuck 5 and clamped and fixed. After releasing the positioning plate 802, the support spring 803 is released, causing the positioning plate 802 to press against the top of the disc spring. At the same time, the reading head 805 installed inside the assembly clamp 804 is flush with the bottom of the positioning plate 802. After the disc spring stabilizes inside the testing machine body 1, the reading head 805 detects the disc spring. The initial height of the spring is determined. Subsequently, the telescopic part inside the servo cylinder 2 drives the test pressure plate 3 to press down until the disc spring between the test pressure plate 3 and the three-jaw chuck 5 is flattened. Then, the servo cylinder 2 drives the test pressure plate 3, which is fixed by the telescopic part, to reset. At the same time, the rebounding disc spring drives the positioning plate 802 to reset again. After the disc spring stabilizes, the reading head 805 measures the height of the disc spring again. The height difference is calculated by using the initial height of the disc spring and the reset height after the destructive test of the disc spring to accurately detect the performance of the disc spring. The destructive test of the disc spring is accurate and fast.

[0036] A hatch 10 is hinged to the outside of the test machine body 1. The hatch 10 and the test chamber 4 are positioned correspondingly. Protective nets 11 are fixedly connected to the inner walls of both the test chamber 4 and the hatch 10.

[0037] In this embodiment, during destructive testing, especially when the disc spring is subjected to extreme fracture testing, the disc spring is prone to breakage, generating a large number of impact fragments. The high-speed ejected fragments can easily damage the testing machine body 1. Since the testing machine body 1 is mostly a one-piece structure, the inner wall of the testing chamber 4 is difficult to repair and has high repair costs after being damaged by the impact of the fragments, which can also damage the testing machine body 1. The protective net 11 installed on the inner wall of the testing chamber 4 and the door 10 plays a role in reducing the impact force of the fragments, thereby reducing the degree of damage to the testing machine body 1 caused by the high-speed fragments.

[0038] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A destructive testing machine for disc springs, comprising a testing machine body (1), characterized in that: A servo electric cylinder (2) is fixedly connected to the top of the main body (1) of the testing machine, and a test pressure plate (3) is fixedly connected to the telescopic part of the servo electric cylinder (2). A test chamber (4) is opened inside the main body (1) of the testing machine. The test chamber (4) is equipped with an anti-rebound mechanism (7) consisting of a three-jaw chuck (5) and a servo motor (6); The anti-rebound mechanism (7) includes a moving groove (701) opened on the top of the three-jaw chuck (5), and chucks (702) are symmetrically slidably connected inside the moving groove (701). A screw (703) is fixedly connected to the output end of the servo motor (6), and the screw (703) and the two chucks (702) are threadedly connected. The test chamber (4) is equipped with a measuring mechanism (8).

2. The disc spring destructive testing machine according to claim 1, characterized in that: The inner sides of the jaws of the three-jaw chuck (5) are arc-shaped.

3. The disc spring destructive testing machine according to claim 1, characterized in that: The screw (703) has two sets of threads symmetrically arranged on its outer side, and the two sets of threads are arranged in opposite directions.

4. The disc spring destructive testing machine according to claim 1, characterized in that: A rubber pad (9) is fixedly connected to the outside of the clamp (702), and the rubber pad (9) is threaded.

5. The disc spring destructive testing machine according to claim 1, characterized in that: The measuring mechanism (8) includes support rods (801) symmetrically fixedly connected inside the test chamber (4). Positioning plates (802) are slidably connected to the outer sides of the two support rods (801). Support springs (803) are fixedly connected between the support rods (801) and the positioning plates (802). An assembly clamp (804) is fixedly connected to the outer side of the positioning plates (802). A reading head (805) is installed inside the assembly clamp (804).

6. The disc spring destructive testing machine according to claim 1, characterized in that: The outer side of the test machine body (1) is hinged with a hatch (10), the hatch (10) and the test chamber (4) are in corresponding positions, and the inner walls of the test chamber (4) and the hatch (10) are fixedly connected with protective nets (11).

Images