CN216399353U - Test tooling - Google Patents

Abstract

The utility model relates to a test tool, which comprises: the first clamping assembly comprises a first clamping sleeve, and a first clamping channel is arranged in the first clamping sleeve; and the second clamping sleeve assembly comprises a second clamping sleeve and a second elastic piece, the second clamping sleeve is connected in the first clamping channel in a matching mode and provided with a second clamping channel used for clamping the to-be-tested piece, and the second elastic piece is located in the second clamping channel and clamped between the to-be-tested piece and the inner wall of the second clamping channel. The test tool provided by the utility model can reduce the damage rate of the piece to be tested.

Description

Test tooling

technical field

The utility model relates to the technical field of testing, in particular to a testing tool.

Background technique

Silicon nitride spherical plain bearing is a kind of special bearing with simple structure, large load capacity, strong impact resistance, which can perform swing motion and has a self-aligning effect. It is widely used in automobiles, ships, aerospace and other fields.

After the production of the silicon nitride spherical plain bearing, the radial static load test of the silicon nitride spherical plain bearing is required to check whether it meets the production standard. However, the existing test tool for the silicon nitride spherical plain bearing is easy to collide with the silicon nitride spherical plain bearing and cause damage to the silicon nitride spherical plain bearing during the test.

Utility model content

Based on this, it is necessary to provide a test tool that can reduce the damage rate of the test piece in view of the problem that the test piece is easily damaged.

A test tool, the test tool includes:

a first clamping assembly, comprising a first jacket with a first clamping channel disposed in the first jacket; and

The second jacket assembly includes a second jacket and a second elastic member, the second jacket is matched in the first clamping channel, and a second clip for clamping the test piece is opened on the second jacket A holding channel, the second elastic member is located in the second holding channel, and is held between the to-be-tested piece and the inner wall of the second holding channel.

In one embodiment, the second elastic member is a cylindrical structure with two ends open and extends along the axial direction of the second clamping channel, and the to-be-tested member is along the axis of the second clamping channel The direction is penetrated through the second elastic piece and is clamped with the second elastic piece.

In one embodiment, the piece to be tested is completely located in the second elastic piece.

In one embodiment, the second clamping channel includes a first section and a second section that communicate with each other, and the diameter of the first section is larger than that of the second section;

The second elastic member includes a first cylindrical section and a second cylindrical section that are connected to each other, the diameter of the first cylindrical section is larger than the diameter of the second cylindrical section, and the first cylindrical section is The diameter of the cylinder matches the diameter of the first section, and the diameter of the second cylindrical section matches the diameter of the second section.

In one embodiment, the first jacket is provided with an assembly hole that communicates with the first clamping channel, one side of the first jacket is located in the first clamping channel, the The other side of the second jacket protrudes out of the first clamping channel through the assembling hole.

In one embodiment, the first clamping assembly further includes a fixed shaft, and the fixed shaft passes through the sidewall of the first jacket, the first a clamping channel and the central hole of the test piece;

Wherein, the radial direction of the first clamping channel coincides with the axial direction of the second clamping channel.

In one embodiment, the first clamping assembly further includes a first elastic member, and the first elastic member is clamped between the hole wall of the central hole of the test piece and the outer peripheral surface of the fixed shaft between.

In one embodiment, the first elastic member completely covers the outer peripheral surface of the fixed shaft.

In one of the embodiments, an intermediate connecting piece is further included, the intermediate connecting piece is matched with the second jacket, and is configured to be used for connecting to the second clamping channel along the radial direction of the second clamping channel. The jacket applies radial force.

In one embodiment, the second jacket is screwed with the intermediate connecting piece.

In the above-mentioned test tool, during testing, the piece to be tested is located in the second clamping channel, and the second elastic piece is clamped between the piece to be tested and the inner wall of the second clamping channel. Due to the arrangement of the second elastic piece, the piece to be tested can be prevented from being damaged due to collision with the second jacket, thereby effectively reducing the damage rate of the piece to be tested.

Description of drawings

1 is a schematic structural diagram of the cooperation between a test piece and a test tool in an embodiment of the present utility model;

Fig. 2 is the structural representation of the first jacket in the test tool shown in Fig. 1;

FIG. 3 is a schematic structural diagram of the cooperation between the first elastic member and the fixed shaft in the test tool shown in FIG. 1;

FIG. 4 is a schematic structural diagram of the second jacket in the test tool shown in FIG. 1 .

Reference number:

100, test tool; 11, first jacket; 112, first clamping channel; 114, assembly hole; 115, first bracket; 116, second bracket; 117, connecting frame; 118, first fixing hole; 119 12, the first elastic member; 13, the fixed shaft; 21, the second jacket; 212, the second clamping channel; 214, the first segment; 216, the second segment; 218, the threaded hole; 22. The second elastic piece; 30, the intermediate connecting piece; 31, the main body of the transmission; 33, the pull ring; 200, the piece to be tested.

Detailed ways

In order to make the above objects, features and advantages of the present utility model more clearly understood, the specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not subject to the specific embodiments disclosed below. limit.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated A device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connected, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication between two elements or the interaction relationship between the two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and defined, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or the first and second features through an intermediary indirect contact. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or an intervening element may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Referring to FIG. 1, the present application provides a test fixture 100, which can be used to perform a radial static load test on a test piece 200 to detect whether it meets production standards. Specifically, the test piece 200 may be a silicon nitride spherical plain bearing.

Please refer to FIG. 2 and FIG. 4 together, the test tool 100 includes a first clamping assembly and a second clamping assembly, the first clamping assembly includes a first jacket 11 , and a first clamping element is disposed in the first jacket 11 The channel 112, the second jacket 21 assembly includes a second jacket 21 and a second elastic member 22, the second jacket 21 is matched in the first clamping channel 112, and is provided with a hole for clamping the test piece 200 The second clamping channel 212 , the second elastic member 22 is located in the second clamping channel 212 and is clamped between the test piece 200 and the inner wall of the second clamping channel 212 .

In the prior art, the test piece 200 is directly inserted into the second clamping channel 212 and has a gap with the inner wall of the second clamping channel 212 . In the process of testing, due to external force, the test piece 200 is easily shaken and rigidly collides with the inner wall of the second clamping channel 212 , resulting in damage to the test piece 200 . In the present application, since the second elastic member 22 is clamped between the member to be tested 200 and the inner wall of the second clamping channel 212 during the test, the elastic force provided by the second elastic member 22 can carry out the operation of the member to be tested 200. The buffer is used to prevent damage to the test piece 200 due to collision with the second jacket 21 , thereby effectively reducing the damage rate of the test piece 200 .

The second elastic member 22 is a cylindrical structure with two ends open and extends along the axial direction of the second clamping channel 212 . The test piece 200 is inserted through the second elastic member 22 along the axial direction of the second clamping channel 212 . and is clamped with the second elastic member 22 . That is to say, the installation of the test piece 200 and the second elastic piece 22 can be realized by passing the test piece 200 through the second elastic piece 22 . In this way, the space between the test piece 200 and the second elastic piece 22 can be effectively raised. assembly efficiency.

The specific assembly process of the second elastic member 22 , the member to be tested 200 and the second jacket 21 is as follows: firstly, the second elastic member 22 is assembled in the second clamping channel 212 , and then the member to be tested 200 is clamped along the second clamping channel 212 . The axial direction of the channel 212 is synchronously penetrated into the second elastic member 22 , so that the installation between the test piece 200 and the second jacket 21 can be realized. Alternatively, the second elastic member 22 can also be sleeved on the test piece 200 first, and then the second elastic member 22 and the test piece 200 can be simultaneously inserted into the second clamp along the axial direction of the second clamping channel 212. channel 212.

Further, the piece to be tested 200 is completely located in the second elastic piece 22 . In this way, the test piece 200 can be completely protected in the second elastic member 22 , thereby effectively preventing the test piece 200 from colliding with the second jacket 21 and being damaged.

Preferably, the second clamping channel 212 includes a first section 214 and a second section 216 that communicate with each other, and the diameter of the first section 214 is larger than that of the second section 216 . The second elastic member 22 includes a first cylindrical section and a second cylindrical section connected to each other, the diameter of the first cylindrical section is larger than the diameter of the second cylindrical section, and the diameter of the first cylindrical section is the same as that of the first section 214 The diameter of the second cylindrical section matches the diameter of the second section 216 .

It can be understood that if the diameter of the first section 214 is larger than that of the second section 216, a first step can be formed at the connection between the first section 214 and the second section 216, and the diameter of the first cylindrical section is larger than that of the second cylindrical section. the diameter of the segment, the first step will be formed at the connection between the first cylindrical segment and the second cylindrical segment. Then, when the first cylindrical section is fitted in the first section 214 and the second cylindrical section is fitted in the second section 216, the first step and the second step are matched, and the second elastic member 22 can be limited relative to the first step. The two clamping channels 212 slide along the axial direction of the second clamping channel 212 , so that the second elastic member 22 and the second jacket 21 have better assembly reliability.

In some embodiments, the first jacket 11 is provided with an assembly hole 114 , and the assembly hole 114 communicates with the first clamping channel 112 to form a U-shaped first jacket 11 . One side of the first jacket 11 is located in the first clamping channel 112 , and the other side of the second jacket 21 protrudes out of the first clamping channel 112 through the mounting hole 114 . By providing the assembly hole 114 , the second jacket 21 , the test piece 200 and the second elastic member 22 , which are assembled to form a whole, can be easily assembled and disassembled from the assembly hole 114 , thereby making the assembly of the test tool 100 easier.

It is worth mentioning that after the first clamping assembly, the second clamping assembly and the test piece 200 are assembled, the axial direction of the second clamping channel 212 coincides with the radial direction of the first clamping channel 112 .

Please refer to FIG. 3 together. In addition, the first clamping assembly further includes a fixing shaft 13 , and the fixing shaft 13 penetrates through the side wall of the first jacket 11 and the first clamping passage along the axial direction of the second clamping passage 212 . 112 and the center hole of the test piece 200. The radial direction of the first clamping channel 112 coincides with the axial direction of the second clamping channel 212 . Understandably, the fixing shaft 13 can be used to fix the DUT 200 and the second jacket 21 . By arranging the fixed shaft 13 , the first jacket 11 , the second jacket 21 and the test piece 200 can all form a unified whole, so that the subsequent test of the test piece 200 can be facilitated.

Further, the first clamping assembly further includes a first elastic member 12 , and the first elastic member 12 is clamped between the hole wall of the central hole of the test piece 200 and the outer peripheral surface of the fixed shaft 13 . By arranging the first elastic member 12 , the fixed shaft 13 can be prevented from being damaged due to rigid collision between the fixed shaft 13 and the test piece 200 , so that the damage rate of the test piece 200 can be further reduced.

Optionally, both the first elastic member 12 and the second elastic member 22 may be made of rubber, silicone, sponge or other materials.

Furthermore, the first elastic member 12 completely covers the outer peripheral surface of the fixed shaft 13 . Understandably, the second elastic member 22 is a tubular structure, and the second elastic member 22 extends along the axial direction of the second clamping channel 212 and is sleeved on the fixed shaft 13 . In this way, rigid contact between the fixed shaft 13 and the first jacket 11 can also be prevented, so that the service life of the test tool 100 can be prolonged.

Preferably, the first jacket 11 has a U-shaped structure, and the first jacket 11 includes a first bracket 115 and a second bracket 116 spaced along the axial direction of the second clamping channel 212 , and further includes a second bracket along the second clamping channel 212 . The axial direction of the channel 212 is connected to the connecting frame 117 between the first bracket 115 and the second bracket 116 , and the first bracket 115 , the second bracket 116 and the connecting frame 117 together form the first clamping channel 112 . The first bracket 115 and the second bracket 116 are respectively provided with a first fixing hole 118 and a second fixing hole 119 , and both the first fixing hole 118 and the second fixing hole 119 are connected to the first clamping channel 112 . During assembly, the first elastic member 12 is sleeved on the fixed shaft 13, and the whole formed by connecting the first elastic member 12 and the fixed shaft 13 is sequentially penetrated through the first fixing hole 118, the first clamping channel 112, and the waiting The center hole of the test piece 200 and the second fixing hole 119 can complete the assembly of the first elastic piece 12 , the fixing shaft 13 , the first jacket 11 and the piece to be tested 200 . In addition, the first elastic member 12 is also clamped between the hole wall of the first fixing hole 118 and the outer peripheral surface of the fixing shaft 13 , and between the hole wall of the second fixing hole 119 and the outer peripheral surface of the fixing shaft 13 .

In some embodiments, the test fixture 100 further includes an intermediate connector 30 mated to the second jacket 21 and configured to extend radially from the second clamping channel 212 to the second jacket 21 . 21 Apply radial force. When the intermediate connector 30 applies a radial force to the first jacket 11, since the first jacket 11 and the test piece 200 are connected by the second elastic member 22, the radial force can also act on the test piece 200 and treat the test piece 200. The test piece 200 was subjected to radial static load testing.

Preferably, there are two intermediate connecting pieces 30 , and the two intermediate connecting pieces 30 are disposed opposite to each other and are respectively connected to opposite sides of the second jacket 21 . By applying two opposite radial forces respectively to the two intermediate connecting pieces 30 by the external force applying device, the piece to be tested 200 can be pressed, so as to test the radial static load performance of the piece to be tested 200 in the pressed state. By applying two opposite radial forces to the two intermediate connecting pieces 30 by the external force applying device, the piece to be tested 200 can be stretched, so as to test the radial static load performance of the piece to be tested 200 in the tensile state .

Further, the second jacket 21 has an opposite first side and a second side, the first side protrudes out of the first clamping channel 112 through the assembling hole 114 , and the second side is located in the second clamping channel 212 and is connected to the second clamping channel 212 . The connecting frame 117 abuts. One of the intermediate connecting pieces 30 is passed through the first side of the second jacket 21 and connected to the second jacket 21 , and the other intermediate connecting piece 30 is passed through the connecting frame 117 and the other side of the second jacket 21 in sequence. And connected with the second jacket 21 , so that radial force can be applied to the second jacket 21 from both sides of the second jacket 21 .

In some other embodiments, the connection method between the two intermediate connecting pieces 30 and the second jacket 21 is not limited to the above one, and the two intermediate connecting pieces 30 may also be respectively penetrated along the axial direction of the first clamping channel 112 . Apply force to the second jacket 21 on opposite sides of the second jacket 21 .

Wherein, further, the second jacket 21 is screwed with the intermediate connecting piece 30, so that the reliability of the connection between the intermediate connecting piece 30 and the second jacket 21 can be improved, so that the external force-applying device can stably pass through the intermediate connection The member 30 exerts a radial force on the second jacket 21 .

Specifically, the first side and the second side of the second jacket 21 are respectively provided with threaded holes 218, and each intermediate connecting piece 30 is provided with an external thread structure, and the two intermediate connecting pieces 30 are respectively connected with the first side and the The threaded holes 218 on the second side are screwed together. In this way, the attachment and detachment of the intermediate connecting piece 30 and the second jacket 21 can be facilitated.

It is worth mentioning that when the intermediate connecting piece 30 is matched with the threaded hole 218, in order to prevent the intermediate connecting piece 30 from penetrating the second jacket 21 and the second elastic piece 22 and being in rigid contact with the test piece 200, it is necessary to ensure that the second clip The threaded holes 218 on the sleeve 21 are all blind holes.

Specifically, each intermediate connector 30 includes a transmission main body 31 and a pull ring 33 matched to the transmission main body 31 , the transmission main body 31 of each intermediate connector 30 is screwed with the corresponding threaded hole 218 respectively, and the pull ring 33 is provided At the end of the transmission main body 31 away from the second jacket 21 , it is convenient for the external force applying device to be fixed to itself, so that force can be applied to the intermediate connecting piece 30 .

In the above-mentioned test tool 100 , during the test, the piece to be tested 200 is located in the second clamping channel 212 , and the second elastic member 22 is clamped between the piece to be tested 200 and the inner wall of the second clamping channel 212 . Due to the arrangement of the second elastic member 22 , the damage to the member to be tested 200 due to collision with the second jacket 21 can be prevented, thereby effectively reducing the damage rate of the member to be tested 200 .

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present utility model, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, some modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for this utility model shall be subject to the appended claims.

Claims (10)

1. The utility model provides a test fixture which characterized in that, test fixture includes:

the first clamping assembly comprises a first clamping sleeve, and a first clamping channel is arranged in the first clamping sleeve; and

and the second clamping sleeve assembly comprises a second clamping sleeve and a second elastic piece, the second clamping sleeve is matched and connected in the first clamping channel, a second clamping channel for clamping the piece to be tested is arranged on the second clamping sleeve, and the second elastic piece is positioned in the second clamping channel and clamped between the piece to be tested and the inner wall of the second clamping channel.

2. The test tool according to claim 1, wherein the second elastic member is a cylindrical structure with openings at two ends and extends in the axial direction of the second clamping channel, and the to-be-tested member penetrates through the second elastic member in the axial direction of the second clamping channel and is clamped with the second elastic member.

3. The test tool according to claim 2, wherein the piece to be tested is located completely within the second elastic piece.

4. The test tool according to claim 2, wherein the second clamping channel comprises a first section and a second section which are communicated with each other, and the caliber of the first section is larger than that of the second section;

the second elastic piece comprises a first cylindrical section and a second cylindrical section which are connected with each other, the diameter of the first cylindrical section is larger than that of the second cylindrical section, the diameter of the first cylindrical section is matched with the caliber of the first section, and the diameter of the second cylindrical section is matched with the caliber of the second section.

5. The test tool according to claim 1, wherein the first jacket is provided with an assembling hole communicated with the first clamping channel, one side of the first jacket is positioned in the first clamping channel, and the other side of the second jacket extends out of the first clamping channel through the assembling hole.

6. The test tool according to claim 1, wherein the first clamping assembly further comprises a fixed shaft, and the fixed shaft axially penetrates through the side wall of the first jacket, the first clamping channel and the central hole of the to-be-tested piece along the second clamping channel;

wherein a radial direction of the first clamping channel coincides with an axial direction of the second clamping channel.

7. The test tool according to claim 6, wherein the first clamping assembly further comprises a first elastic piece, and the first elastic piece is clamped between the hole wall of the central hole of the piece to be tested and the outer peripheral surface of the fixing shaft.

8. The test tool according to claim 7, wherein the first elastic member completely covers the outer peripheral surface of the fixed shaft.

9. The test fixture of claim 1, further comprising an intermediate connector coupled to the second collet and configured to apply a radial force to the second collet in a radial direction of the second clamping channel.

10. The test fixture of claim 9, wherein the second collet is threaded with the intermediate connector.

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