Strength testing device for powder metallurgy component

Abstract

The utility model particularly relates to the field of metallurgical part detection equipment, and discloses a strength testing device for a powder metallurgical part, which comprises a base and a limiting die holder fixedly arranged at the top end of the base, a groove is formed in the top end of the limiting die holder, and supporting columns are fixedly arranged at four corners of the bottom end of the limiting die holder to form an integrated structure. The bottom ends of the supporting columns are fixedly connected to the surface of the base, an air cylinder is fixedly arranged in the middle of the bottom end of the limiting die holder, the output end of the air cylinder penetrates through the limiting die holder and is inserted into the groove, a tray is fixedly arranged in the groove, and the external size of the tray is matched with the internal size of the groove. Through the arrangement of the base, the limiting die holder, the supporting column, the groove, the air cylinder and the tray, the external size of the air cylinder is matched with the internal size of the groove, and when a metallurgical part is deformed and clamped in the groove and is difficult to take out, the tray can be pushed to vertically move upwards by starting the air cylinder, so that the convenience of cleaning the interior of the groove is improved.

Description

Technical Field

[0001] The utility model belongs to the field of metallurgical part testing equipment, and particularly relates to a strength testing device for powder metallurgy parts. Background Technique

[0002] Powder metallurgy is a process technology for producing metals or using metal powders as raw materials, through pressing and sintering to manufacture metal materials, composite materials and various types of products. Powder metallurgy related enterprises are mainly applicable to the production and research of spare parts in the fields of the automotive industry, equipment manufacturing industry, metal industry, instrumentation, hardware tools, electronic household appliances, etc. After the powder metallurgy parts are sintered and solidified, a strength testing device is required to detect the compressive strength of the metallurgical parts.

[0003] When the existing strength testing device for powder metallurgy parts is in use, the extrusion head outputs power through a hydraulic cylinder to extrude the metallurgical parts, which may cause the metallurgical parts to deform, so that the unqualified metallurgical parts are broken and clamped in the limit die base, thus increasing the difficulty of cleaning the limit die base. Content of the Utility Model

[0004] The utility model provides a strength testing device for powder metallurgy parts, aiming to solve the problem that when the existing strength testing device for powder metallurgy parts is in use, the extrusion head outputs power through a hydraulic cylinder to extrude the metallurgical parts, which may cause the metallurgical parts to deform, so that the unqualified metallurgical parts are broken and clamped in the limit die base, thus increasing the difficulty of cleaning the limit die base.

[0005] The utility model is realized as follows: a strength testing device for powder metallurgy parts includes a base and a limit die base fixed on the top end of the base. A groove is opened at the top end of the limit die base. Four corner positions at the bottom end of the limit die base are fixedly provided with support columns to form an integral structure. The bottom ends of the support columns are fixedly connected to the surface of the base. A cylinder is fixedly provided at the middle position of the bottom end of the limit die base. The output end of the cylinder penetrates through the limit die base and is inserted into the groove, and a tray is fixedly provided inside. The external dimensions of the tray are adapted to the internal dimensions of the groove.

[0006] Preferably, a support frame is fixedly provided on the surface of the base close to the limit die base. The support frame is L-shaped, and a hydraulic cylinder is fixedly provided at the top end of the support frame, improving the stability of the support of the hydraulic cylinder.

[0007] Preferably, a stress sensor is fixedly provided at the output end of the hydraulic cylinder penetrating through the support frame. An extrusion head is fixedly provided at the bottom end of the stress sensor. The extrusion head, the stress sensor, the hydraulic cylinder and the limit die base are located in the same vertical direction, facilitating the clamping and positioning of the metallurgical parts.

[0008] Preferably, two groups of upper limit components are symmetrically arranged on the side wall of the limit die base. Both of the two upper limit components include blocks inserted into the side wall of the limit die base. Two groups of notches two are symmetrically formed on the side wall of the limit die base for the blocks to be inserted. The external dimension of the block is adapted to the internal dimension of the notch two, which improves the stability during the testing of metallurgical parts.

[0009] Preferably, baffles are fixedly arranged at the ends of both groups of blocks, and pull rings are fixedly arranged on the side walls of the baffles away from the blocks, which improves the convenience of pulling out the blocks.

[0010] Preferably, a notch one is formed at the inner bottom of the groove, and the notch one penetrates through the limit die base for the output end of the air cylinder to be inserted, which facilitates the driving of the air cylinder.

[0011] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0012] Firstly, by providing a base, a limit die base, support columns, a groove, an air cylinder and a tray, the external dimension of the air cylinder is adapted to the internal dimension of the groove. When the metallurgical part is deformed and stuck in the groove and difficult to take out, starting the air cylinder can push the tray to move vertically upward, thus improving the convenience of cleaning the inside of the groove; Secondly, by providing an upper limit component, the upper limit component includes a block. When the block is inserted into the notch two, the displacement of the metallurgical part in the vertical direction can be restricted, which improves the stability during the testing of the metallurgical part. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a side view three-dimensional structure schematic diagram of the present utility model.

[0014] Figure 2 It is a side view installation structure schematic diagram of the limit die base of the present utility model.

[0015] Figure 3 It is a front view structure schematic diagram of the limit die base of the present utility model.

[0016] Reference numerals are: 1, base; 2, limit die base; 3, support column; 4, groove; 5, air cylinder; 6, support frame; 7, hydraulic cylinder; 8, stress sensor; 9, extrusion head; 10, upper limit component; 1001, block; 1002, baffle; 1003, pull ring; 11, tray; 12, notch one; 13, notch two. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification, claims or drawings of this application are used to distinguish different objects and not to describe a specific order.

[0018] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0019] Please refer to Figures 1-3, an embodiment provided by the present utility model: a strength testing device for powder metallurgy parts, comprising a base 1 and a limit die base 2 fixedly arranged at the top end of the base 1. A groove 4 is formed at the top end of the limit die base 2 for clamping the metallurgy part. A support frame 6 is fixedly arranged on the surface of the base 1 close to the limit die base 2 by welding. The support frame 6 is in an L shape. A hydraulic cylinder 7 is fixedly arranged at the top end of the support frame 6 by bolts, improving the stability of the support of the hydraulic cylinder 7. The output end at the bottom end of the hydraulic cylinder 7 penetrates through the support frame 6 and is fixedly arranged with a stress sensor 8 through a coupling. A pressing head 9 is fixedly arranged at the bottom end of the stress sensor 8 by bolts. Starting the hydraulic cylinder 7 can drive the stress sensor 8 and the pressing head 9 to move vertically downward. The bottom end of the pressing head 9 acts on the surface of the metallurgy part, thus forming a reaction force on the stress sensor 8. The magnitude of the acting stress can be measured through the stress sensor 8. By observing the deformation of the metallurgy part under different stress states, the strength test can be realized. The pressing head 9, the stress sensor 8, the hydraulic cylinder 7 and the limit die base 2 are located in the same vertical direction, facilitating the clamping and positioning of the metallurgy part. Support columns 3 are fixedly arranged at the four corner positions at the bottom end of the limit die base 2 to form an integral structure. The bottom ends of the support columns 3 are all fixedly connected to the surface of the base 1 by bolts, thus improving the stability of the support of the limit die base 2. A cylinder 5 is fixedly arranged at the middle position at the bottom end of the limit die base 2. The output end of the cylinder 5 penetrates through the limit die base 2 and is inserted into the groove 4 and fixedly arranged with a tray 11. A notch one 12 is formed at the inner bottom of the groove 4. The notch one 12 penetrates through the limit die base 2 for the output end of the cylinder 5 to be inserted, facilitating the driving of the cylinder 5. The external dimensions of the tray 11 are adapted to the internal dimensions of the groove 4. When the tested metallurgy part is deformed and clamped in the groove 4 and is difficult to take out, starting the cylinder 5 can push the tray 11 to move vertically upward. The tray 11 can push the metallurgy part to move vertically upward, thus pushing the metallurgy out of the groove 4, thereby improving the convenience of cleaning inside the groove 4.

[0020] Two groups of upper limit components 10 are symmetrically arranged on the side wall of the limit die base 2. Both upper limit components 10 include clamping blocks 1001 inserted on the side wall of the limit die base 2. Two groups of notches two 13 are symmetrically formed on the side wall of the limit die base 2 for the clamping blocks 1001 to be inserted. The external dimensions of the clamping blocks 1001 are adapted to the internal dimensions of the notches two 13. The clamping blocks 1001 can limit the displacement of the metallurgy part in the vertical direction, improving the stability of the metallurgy part during testing. Baffles 1002 are fixedly arranged at the ends of both groups of clamping blocks 1001. Pulling rings 1003 are fixedly arranged on the side walls of the baffles 1002 away from the clamping blocks 1001, improving the convenience of pulling out the clamping blocks 1001.

[0021] Working principle: When this strength testing device for powder metallurgy parts is in use, the operator first connects an external power supply, places the metallurgy part to be tested inside the groove 4, and then inserts the two clamping blocks 1001 into the notch two 13 in sequence to limit the displacement of the metallurgy part in the vertical direction, improving the stability of the clamping of the metallurgy part. Then, starting the hydraulic cylinder 7 can drive the stress sensor 8 and the extrusion head 9 to move vertically downward. The bottom end of the extrusion head 9 acts on the surface of the metallurgy part, thereby forming a reaction force on the stress sensor 8. The magnitude of the acting stress can be measured through the stress sensor 8, and the strength test can be realized by observing the deformation of the metallurgy part under different stress states. When the tested metallurgy part is deformed and clamped inside the groove 4, the operator first lifts the two pull rings 1003, which facilitates the extraction of the clamping blocks 1001 to release the limit on the top of the metallurgy part. Then, starting the air cylinder 5 can push the tray 11 to move vertically upward, and the tray 11 can push the metallurgy part to move vertically upward, thereby pushing the metallurgy part out of the groove 4, thus improving the convenience of cleaning inside the groove 4.

[0022] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without creative efforts, combine, add or delete the features in the embodiments of the present invention according to the situation, or make other adjustments, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention. These technical solutions also belong to the scope of protection of the present invention.

Claims

1. A strength testing device for powder metallurgy parts, characterized in that: The invention comprises a base (1) and a limiting mold base (2) fixedly arranged at the top of the base (1): a groove (4) is provided at the top of the limiting mold base (2); support columns (3) are fixedly arranged at the four corner positions of the bottom end of the limiting mold base (2) to form an integrated structure; the bottom ends of the support columns (3) are fixedly connected to the surface of the base (1); a cylinder (5) is fixedly arranged at the middle position of the bottom end of the limiting mold base (2); the output end of the cylinder (5) passes through the limiting mold base (2) and is inserted into the groove (4); a tray (11) is fixedly arranged inside the groove; and the outer dimensions of the tray (11) are matched with the inner dimensions of the groove (4).

2. A strength testing device for powder metallurgy parts according to claim 1, characterized in that: A support frame (6) is fixedly provided on the surface of the base (1) close to the limiting mold base (2); the support frame (6) is L-shaped, and a hydraulic cylinder (7) is fixedly provided on the top of the support frame (6).

3. A strength testing device for powder metallurgy parts according to claim 2, characterized in that: The output end of the hydraulic cylinder (7) passes through the support frame (6) and is fixedly provided with a stress sensor (8); the bottom end of the stress sensor (8) is fixedly provided with an extrusion head (9); and the extrusion head (9), the stress sensor (8), the hydraulic cylinder (7) and the limiting die seat (2) are located in the same vertical direction.

4. A strength testing device for powder metallurgy parts according to claim 3, characterized in that: Two groups of upper limit assemblies (10) are symmetrically arranged on the side wall of the limit mold base (2), and both of the two upper limit assemblies (10) include a clamping block (1001) plugged into the side wall of the limit mold base (2). Two groups of slots (13) are symmetrically opened on the side wall of the limit mold base (2) for the clamping block (1001) to be plugged in, and the external dimensions of the clamping block (1001) are compatible with the internal dimensions of the slots (13).

5. A strength testing device for powder metallurgy parts according to claim 4, characterized in that: The ends of the two groups of the clamping blocks (1001) are both fixedly provided with baffles (1002), and the side walls of the baffles (1002) away from the clamping blocks (1001) are both fixedly provided with pull rings (1003).

6. A strength testing device for powder metallurgy parts according to claim 1, characterized in that: The inner bottom of the groove (4) is provided with a notch (12), and the notch (12) penetrates the limiting mold base (2) for the output end of the cylinder (5) to be plugged in.

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