Powder metallurgy part crushing strength detection tool

Abstract

The utility model relates to the field of powder metallurgy part detection, and discloses a powder metallurgy part crushing strength detection tool. The device comprises a base table, a part containing plate and a part supporting seat, the part containing plate is fixedly installed on the base table, a disc is detachably installed on the part containing plate, the disc is suitable for being sleeved with a circular ring, and the part supporting seat is connected with the base table and suitable for supporting a cantilever arc plate on the lower portion. The outer wall face of the lower cantilever arc plate abuts against the top of the part supporting base. According to the scheme of the utility model, the to-be-tested part can be stably supported, so that the part is not easy to incline after being pressed in the test process, and the accuracy of the test value of the crushing strength is ensured; parts with different diameters are adapted by replacing the disc and adjusting the height of the part supporting seat, so that the application range is wider; when the part supporting seat is driven to ascend, only the driving screw needs to be rotated, and operation is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of powder metallurgy parts testing technology, and more specifically, to a tooling for testing the crushing strength of powder metallurgy parts. Background Technology

[0002] Powder metallurgy parts are metal parts manufactured by taking metal powder or using metal powder as raw material, and then forming and sintering them. A type of automotive part is manufactured using powder metallurgy technology. This part includes a circular ring and multiple cantilevered arc plates circumferentially spaced on the ring. The inner and outer arc surfaces of the cantilevered arc plates are concentric with the ring. The inner arc surface of the cantilevered arc plate is flush with the inner wall of the ring, but the outer diameter of the outer arc surface of the cantilevered arc plate is smaller than the outer diameter of the ring; that is, the cantilevered arc plates are spaced apart from the outer wall of the ring.

[0003] After the aforementioned automotive parts are formed, samples need to be selected for crush strength testing of their cantilever plates. In related technologies, the part is fixed on its side in a vise, with its axis horizontal. Then, a press is used to press down on the upper cantilever plate in this state while moving horizontally. However, because the cantilever plates and the outer wall of the ring are spaced apart, there is a gap between the bottom cantilever plate and the bottom of the vise after the part is clamped. Therefore, the part is prone to tilting under pressure during the test, leading to inaccurate crush strength measurements. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model provides a fixture for testing the crushing strength of powder metallurgy parts, comprising a base, a part placement plate, and a part support base. The part placement plate is fixedly mounted on the base, and a disc is detachably mounted on the part placement plate. The disc is suitable for being fitted with a ring. The part support base is connected to the base and is used to support a lower cantilevered arc plate, the outer wall of which abuts against the top of the part support base. The base has multiple discs, each detachably connected to the base, and the outer diameters of the discs are different. All discs can be mounted on the part placement plate. The base has two guide plates, located on opposite sides of the part support base. Guide posts are provided on the two opposite side walls of the part support base, and guide grooves are formed on both guide plates. The guide posts are inserted into the corresponding guide grooves and slide within them. The base has a lifting drive assembly adapted to drive the part support base to rise or fall.

[0005] Optionally, the top of the component support is provided with an arc surface, which is in contact with the outer wall surface of the cantilever arc plate.

[0006] Optionally, a threaded connecting post is provided on one side of the disk, the threaded connecting post being threadedly connected to the part placement plate, and a hexagonal drive hole for cooperating with a hexagonal wrench is provided on the side of the disk away from the threaded connecting post.

[0007] Optionally, the lifting drive assembly includes a drive block and a drive screw. The drive block is slidably mounted on the base, and the drive screw is threadedly connected to the base. One end of the drive screw abuts against the drive block. The bottom of the part support seat is provided with a first inclined surface, and the drive block is provided with a second inclined surface that fits against the first inclined surface. When the drive screw drives the drive block to move towards the part placement plate, the part support seat rises under the action of the first inclined surface and the second inclined surface.

[0008] Optionally, the bottom of the drive block is provided with a dovetail block, the base is provided with a dovetail groove, the dovetail block is inserted into the dovetail groove and can slide within the dovetail groove.

[0009] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0010] 1. After the part is placed on the disc on the part placement plate, the part support will provide stable support to the cantilevered arc plate below it in this state, so that the part is not easy to tilt under pressure during the test, thus ensuring the accuracy of the crush strength test value.

[0011] 2. The arc surface at the top of the part support seat allows the part support seat to fit more closely with the cantilever arc plate, further improving the stability when supporting the part.

[0012] 3. When inspecting different types of the part (different outer diameters, different lengths of cantilever arc plates), simply remove the disc on the part placement plate and replace it with a disc of the corresponding size. Then, the height of the part support can be adjusted by moving the drive block, so that the top surface of the part support can fit more closely with the corresponding part, making the tooling more widely applicable and convenient. Attached Figure Description

[0013] Figure 1 This is a diagram showing the clamping state of the detection tooling on the part in an embodiment of this utility model;

[0014] Figure 2 This is an exploded view of the base, parts placement plate, parts support base and lifting drive assembly in the embodiment of this utility model;

[0015] Figure 3 This is an exploded view of the lifting drive assembly in an embodiment of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Base; 11. Guide plate; 111. Guide groove; 12. Dovetail groove; 2. Part placement plate; 21. Disc; 211. Threaded connecting post; 212. Hexagonal drive hole; 3. Part support seat; 31. Arc surface; 32. Guide post; 33. First inclined surface; 4. Lifting drive assembly; 41. Drive block; 411. Second inclined surface; 42. Drive screw; 43. Mounting plate; 44. Dovetail block. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0019] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0020] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0021] This utility model embodiment provides a tooling for testing the crush strength of powder metallurgy parts, referring to... Figure 1 The fixture for testing the crushing strength of powder metallurgy parts includes a base 1, a part placement plate 2, and a part support 3. Both the part placement plate 2 and the part support 3 are mounted on the top of the base 1. The part placement plate 2 is fixedly mounted on the base 1, and a disc 21 is detachably mounted on the part placement plate 2. The disc 21 is suitable for the placement of a ring. The part support 3 is located on the side of the part placement plate 2 where the disc 21 is located. The part support 3 and the part placement plate 2 are arranged at intervals. The part support 3 is used to support the cantilevered arc plate below. The outer wall of the lower cantilevered arc plate abuts against the top of the part support 3 for support, thereby preventing the part from tilting under pressure during the test and ensuring the accuracy of the crushing strength test value.

[0022] Reference Figure 1 and Figure 2The parts placement plate 2 is welded to the base 1. A threaded hole is provided on the side of the parts placement plate 2 near the parts support 3. A threaded connecting post 211 is welded to the side of the disc 21 near the parts placement plate 2. The threaded connecting post 211 is threaded into the threaded hole, thus allowing the disc 21 to be mounted on the parts placement plate 2. A hexagonal drive hole 212 is provided on the side of the disc 21 away from the threaded connecting post 211. A hexagonal wrench can be inserted into the hexagonal drive hole 212 to drive the disc 21 to rotate, making it convenient to mount the disc 21 onto the parts placement plate 2.

[0023] Multiple threaded grooves are spaced apart on one side of the outer wall of the base 1. Each of the multiple threaded grooves has a disc 21 threadedly installed in it. However, the outer diameters of the multiple discs 21 on the outer wall of the base 1 are different. Therefore, when testing different models of the part, it is only necessary to remove the disc 21 installed on the part placement plate 2 and replace it with the corresponding model disc 21 on the base 1.

[0024] The top of the component support 3 is provided with an arc surface 31, which can fit against the outer wall of the cantilever arc plate, making the component support 3 more stable when supporting the cantilever arc plate.

[0025] Reference Figure 2 and Figure 3 Guide posts 32 are welded to the outer walls of the part support base 3 on both sides opposite to the part placement plate 2. Two guide plates 11 are welded to the top of the base 1, and the two guide plates 11 are located on both sides of the part support base 3 where the guide posts 32 are located. The two guide posts 32 are connected to the two guide plates 11 respectively, so that the part support base 3 is installed on the base 1.

[0026] The base 1 is equipped with a lifting drive assembly 4, which can drive the part support 3 to rise or fall. The part support 3 can stably support parts of different diameters, making the tooling widely applicable. Guide grooves 111 are provided on both guide plates 11, extending vertically and penetrating the top of the corresponding guide plate 11. The guide post 32 on the corresponding side of the part support 3 enters the guide groove 111 through the top opening of the guide groove 111, allowing the part support 3 to move directionally up and down along the opening direction of the guide groove 111 after being driven by the lifting drive assembly 4.

[0027] Reference Figure 2 and Figure 3The lifting drive assembly 4 includes a drive block 41, a drive screw 42, and a mounting plate 43. The mounting plate 43 is mounted on the base 1. One end of the drive screw 42 passes through the mounting plate 43 and is threadedly connected to the mounting plate 43. The drive block 41 can move towards the part placement plate 2 under the drive of the drive screw 42. After the drive block 41 moves, it can drive the part support 3 to rise and fall.

[0028] Reference Figure 2 and Figure 3 Specifically, the mounting plate 43 is located on the side of the part support base 3 opposite to the part placement plate 2, and is bolted to the outer wall of the base 1. The drive block 41 is located on the side of the mounting plate 43 near the part support base 3. The bottom of the drive block 41 is integrally formed with a dovetail block 44. The side of the base 1 where the mounting plate 43 is installed has a dovetail groove 12, which extends towards the part placement plate 2. The dovetail block 44 can be inserted into the dovetail groove 12 and slide within it, thereby causing the drive block 41 to slide in a directional manner. The end of the drive screw 42 near the drive block 41 abuts against the drive block 41. Therefore, rotating the drive screw 42 to move it towards the part placement plate 2 will drive the drive block 41 to move towards the part placement plate 2. The bottom of the part support base 3 is provided with a first inclined surface 33. The first inclined surface 33 gradually tilts towards the top of the base 1 along the direction in which the drive block 41 moves toward the part placement plate 2. The top of the drive block 41 is provided with a second inclined surface 411 that fits against the first inclined surface 33. The first inclined surface 33 is located within the range of the second inclined surface 411. Therefore, when the drive block 41 moves toward the part placement plate 2, the part support base 3 rises under the action of the first inclined surface 33 and the second inclined surface 411.

[0029] Because the drive screw 42 abuts against the drive block 41 to limit its movement towards the mounting plate 43, the drive block 41 is not easily moved towards the mounting plate 43 when the part support 3 is subjected to pressure. To drive the part support 3 down, simply rotate the drive screw 42 to move it away from the part placement plate 2, and then manually move the drive block 41 to abut against the drive screw 42. The part support 3 will then descend under its own weight.

[0030] The implementation principle of the powder metallurgy part crushing strength testing fixture in this application embodiment is as follows: after the part is placed on the disc 21 located on the part placement plate 2, the part support 3 will support the cantilever arc plate below it in this state. The outer wall of the cantilever arc plate will fit against the arc surface 31 at the top of the part support 3, so that the part is not easy to tilt after being subjected to pressure during the test, thereby ensuring the accuracy of the crushing strength test value.

[0031] In addition, when testing parts of different diameters, simply remove the disc 21 located on the part placement plate 2 and replace it with a disc 21 of the corresponding size. Then, the height of the part support 3 can be adjusted by moving the drive block 41 so that the top surface of the part support 3 can fit more closely with the corresponding part.

[0032] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. A tooling for testing the crushing strength of powder metallurgy parts, characterized in that: The system includes a base (1), a parts placement plate (2), and a parts support base (3). The parts placement plate (2) is fixedly installed on the base (1). A disc (21) is detachably installed on the parts placement plate (2). The disc (21) is suitable for a ring to be fitted. The parts support base (3) is connected to the base (1) and is suitable for supporting the lower cantilever arc plate. The outer wall of the lower cantilever arc plate abuts against the top of the parts support base (3). The base (1) is provided with multiple discs (21). All discs (21) are detachably connected to the base (1). The outer diameters of the multiple discs (21) are different. All discs (21) can be installed on the part placement plate (2); the base (1) is provided with two guide plates (11), the two guide plates (11) are respectively located on both sides of the part support (3), the two opposite side walls of the part support (3) are provided with guide posts (32), the two guide plates (11) are provided with guide grooves (111), the two guide posts (32) are respectively inserted into the corresponding guide grooves (111) and slide in the guide grooves (111); the base (1) is provided with a lifting drive assembly (4), the lifting drive assembly (4) is adapted to drive the part support (3) to rise or fall.

2. The tooling for testing the crushing strength of powder metallurgy parts according to claim 1, characterized in that: The top of the component support base (3) is provided with an arc surface (31), which is in contact with the outer wall surface of the cantilever arc plate.

3. The tooling for testing the crushing strength of powder metallurgy parts according to claim 1, characterized in that: The disc (21) has a threaded connecting post (211) on one side, which is threadedly connected to the part placement plate (2). The disc (21) has a hexagonal drive hole (212) for cooperating with a hexagonal wrench on the side away from the threaded connecting post (211).

4. A tooling for testing the crushing strength of powder metallurgy parts according to any one of claims 1-3, characterized in that: The lifting drive assembly (4) includes a drive block (41) and a drive screw (42). The drive block (41) is slidably mounted on the base (1). The drive screw (42) is threadedly connected to the base (1). One end of the drive screw (42) abuts against the drive block (41). The bottom of the part support seat (3) is provided with a first inclined surface (33). The drive block (41) is provided with a second inclined surface (411) that fits against the first inclined surface (33). When the drive screw (42) drives the drive block (41) to move closer to the part placement plate (2), the part support seat (3) rises under the action of the first inclined surface (33) and the second inclined surface (411).

5. The tooling for testing the crushing strength of powder metallurgy parts according to claim 4, characterized in that: The bottom of the drive block (41) is provided with a dovetail block (44), and the base (1) is provided with a dovetail groove (12). The dovetail block (44) is inserted into the dovetail groove (12) and can slide within the dovetail groove (12).

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