CN216399353U

CN216399353U - Test tool

Info

Publication number: CN216399353U
Application number: CN202122718561.3U
Authority: CN
Inventors: 许滔; 朱福林; 曾小锋; 肖立
Original assignee: Hengyang Kaixin Special Materials Technology Co ltd
Current assignee: Hengyang Kaixin Special Materials Technology Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-04-29
Anticipated expiration: 2031-11-08

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 tool

Technical Field

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

Background

The silicon nitride knuckle bearing is a special bearing which has the advantages of simple structure, high load capacity, high impact resistance, capability of swinging and centering, and is widely applied to the fields of automobiles, ships, aerospace and the like.

After the silicon nitride knuckle bearing is produced, a radial static load test needs to be carried out on the silicon nitride knuckle bearing so as to detect whether the silicon nitride knuckle bearing meets the production standard or not. However, the existing test tool for the silicon nitride oscillating bearing is easy to collide with the silicon nitride oscillating bearing in the test process and cause the silicon nitride oscillating bearing to be damaged.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a test tool capable of reducing the damage rate of a to-be-tested piece in order to solve the problem that the to-be-tested piece is easy to damage.

The utility model provides a test fixture, 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.

In one embodiment, the second elastic member is a cylindrical structure with openings at two ends and extends along the axial direction of the second clamping channel, and the test piece penetrates through the second elastic member along the axial direction of the second clamping channel and is clamped with the second elastic member.

In one embodiment, the test piece is completely located in the second elastic piece.

In one embodiment, 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.

In one embodiment, the first clamping channel is provided with a first clamping hole, the first clamping channel is communicated with the first clamping hole, one side of the first clamping channel is positioned in the first clamping channel, and the other side of the second clamping channel extends out of the first clamping channel through the first clamping hole.

In one embodiment, the first clamping assembly further comprises a fixed shaft, and the fixed shaft 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 axial direction of the second clamping channel;

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

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

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

In one embodiment, the clamping device further comprises 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.

In one embodiment, the second collet is screwed with the intermediate connector.

According to the test tool, during testing, the to-be-tested part is located in the second clamping channel, and the second elastic part is clamped between the to-be-tested part and the inner wall of the second clamping channel. Due to the arrangement of the second elastic piece, the damage of the piece to be tested due to collision with the second jacket can be prevented, and the damage rate of the piece to be tested can be effectively reduced.

Drawings

FIG. 1 is a schematic structural diagram of a test tool and a test piece to be tested according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a first jacket in the test fixture shown in FIG. 1;

FIG. 3 is a schematic structural view illustrating the first elastic member of the testing tool shown in FIG. 1 being engaged with the fixing shaft;

fig. 4 is a schematic structural view of a second jacket in the test tool shown in fig. 1.

Reference numerals:

100. testing the tool; 11. a first jacket; 112. a first clamping channel; 114. an assembly hole; 115. a first bracket; 116. a second bracket; 117. a connecting frame; 118. a first fixing hole; 119. a second fixing hole; 12. a first elastic member; 13. a fixed shaft; 21. a second jacket; 212. a second clamping channel; 214. a first stage; 216. a second stage; 218. a threaded hole; 22. a second elastic member; 30. an intermediate connecting member; 31. a transmission main body; 33. a pull ring; 200. and (5) testing the piece to be tested.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements 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 the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, the present application provides a testing tool 100, wherein the testing tool 100 can be used for performing a radial static load test on a to-be-tested piece 200 to detect whether the to-be-tested piece meets a production standard. Specifically, the piece to be tested 200 may be a silicon nitride spherical plain bearing.

Referring to fig. 2 and 4, the testing tool 100 includes a first clamping assembly and a second clamping assembly, the first clamping assembly includes a first clamping sleeve 11, a first clamping passage 112 is disposed in the first clamping sleeve 11, the second clamping sleeve 21 includes a second clamping sleeve 21 and a second elastic member 22, the second clamping sleeve 21 is coupled in the first clamping passage 112 and is provided with a second clamping passage 212 for clamping the to-be-tested device 200, and the second elastic member 22 is located in the second clamping passage 212 and is clamped between the to-be-tested device 200 and an inner wall of the second clamping passage 212.

In the prior art, the device under test 200 directly penetrates the second clamping channel 212, and a gap exists between the device under test and the inner wall of the second clamping channel 212. The piece to be tested 200 is easily shaken and rigidly collided with the inner wall of the second clamping channel 212 due to an external force during the test, resulting in damage to the piece to be tested 200. In the present application, because the second elastic member 22 is clamped between the to-be-tested member 200 and the inner wall of the second clamping channel 212 during testing, the elastic force provided by the second elastic member 22 can buffer the to-be-tested member 200, so as to prevent the to-be-tested member 200 from being damaged due to collision with the second clamping sleeve 21, thereby effectively reducing the damage rate of the to-be-tested member 200.

The second elastic member 22 is a cylindrical structure with two open ends and extends along the axial direction of the second clamping channel 212, and the test piece 200 penetrates 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 to-be-tested device 200 is inserted into the second elastic device 22, so that the to-be-tested device 200 and the second elastic device 22 can be mounted, and thus, the assembly efficiency between the to-be-tested device 200 and the second elastic device 22 can be effectively improved.

The specific assembling process of the second elastic piece 22, the to-be-tested piece 200 and the second jacket 21 is as follows: the second elastic member 22 is assembled in the second clamping channel 212, and then the to-be-tested piece 200 is synchronously inserted into the second elastic member 22 along the axial direction of the second clamping channel 212, so that the to-be-tested piece 200 and the second jacket 21 can be installed. Alternatively, the second elastic member 22 may be sleeved on the to-be-tested device 200, and then the second elastic member 22 and the to-be-tested device 200 are synchronously inserted into the second clamping channel 212 along the axial direction of the second clamping channel 212.

Further, the piece to be tested 200 is completely located within the second elastic member 22. Thus, the device under test 200 can be completely protected within the second elastic member 22, thereby effectively preventing the device under test 200 from being damaged by collision with the second collet 21.

Preferably, the second clamping channel 212 includes a first section 214 and a second section 216 that are in communication with each other, the first section 214 having a larger bore than 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 that of the second cylindrical section, the diameter of the first cylindrical section matches with the diameter of the first section 214, and the diameter of the second cylindrical section matches with the diameter of the second section 216.

It will be appreciated that the bore of the first section 214 is greater than the bore of the second section 216, a first step may be formed at the junction of the first section 214 and the second section 216, and the diameter of the first cylindrical section is greater than the diameter of the second cylindrical section, a first step will be formed at the junction of the first cylindrical section and the second cylindrical section. 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 is engaged with the second step and can limit the axial sliding of the second elastic member 22 relative to the second clamping channel 212 along the second clamping channel 212, so that the second elastic member 22 and the second jacket 21 have better assembling reliability.

In some embodiments, the first collet 11 defines a fitting hole 114, and the fitting hole 114 communicates with the first clamping channel 112 to form a U-shaped first collet 11. One side of the first collet 11 is positioned in the first clamping passage 112, and the other side of the second collet 21 is protruded out of the first clamping passage 112 through the fitting hole 114. By arranging the assembling hole 114, the second jacket 21, the to-be-tested piece 200 and the second elastic piece 22 which are integrally formed by operation and assembly can be conveniently assembled and disassembled from the assembling hole 114, so that the assembly of the test tool 100 is simpler.

It should be noted that, after the first clamping assembly, the second clamping assembly and the to-be-tested object 200 are assembled, the axial direction of the second clamping channel 212 coincides with the radial direction of the first clamping channel 112.

Referring to fig. 3, in addition, the first clamping assembly further includes a fixing shaft 13, and the fixing shaft 13 is disposed through the sidewall of the first clamping sleeve 11, the first clamping channel 112 and the central hole of the to-be-tested piece 200 along the axial direction of the second clamping channel 212. Wherein the radial direction of the first clamping channel 112 coincides with the axial direction of the second clamping channel 212. It is understood that the fixing shaft 13 may be used to fix the test piece 200 and the second collet 21. Through setting up fixed axle 13 for first clamp cover 11, second clamp cover 21 and treat test piece 200 homoenergetic form a unified whole, thereby can conveniently follow-up treat test piece 200 and test.

Further, the first clamping assembly further includes a first elastic member 12, and the first elastic member 12 is clamped between a hole wall of the central hole of the to-be-tested device 200 and the outer circumferential surface of the fixing shaft 13. By providing the first elastic member 12, the fixed shaft 13 can be prevented from being damaged by a rigid collision between the fixed shaft and the test object 200, so that the damage rate of the test object 200 can be further reduced.

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

Further, the first elastic member 12 completely covers the outer peripheral surface of the fixed shaft 13. It is understood that 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 fixing shaft 13. In this way, rigid contact between the fixed shaft 13 and the first jacket 11 can be prevented, and the service life of the test fixture 100 can be prolonged.

Preferably, the first clamping sleeve 11 is a U-shaped structure, the first clamping sleeve 11 includes a first bracket 115 and a second bracket 116 arranged along the axial direction of the second clamping channel 212 at intervals, and further includes a connecting bracket 117 connected between the first bracket 115 and the second bracket 116 along the axial direction of the second clamping channel 212, and the first bracket 115, the second bracket 116 and the connecting bracket 117 together enclose to 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 the first fixing hole 118 and the second fixing hole 119 are both connected with the first clamping channel 112. During assembly, the first elastic element 12 is sleeved on the fixed shaft 13, and the first elastic element 12, the fixed shaft 13, the first clamping channel 112, the central hole of the to-be-tested piece 200 and the second fixing hole 119 are sequentially arranged in a penetrating manner by operating the whole formed by connecting the first elastic element 12 and the fixed shaft 13, so that the assembly of the first elastic element 12, the fixed shaft 13, the first clamping sleeve 11 and the to-be-tested piece 200 can be completed. In addition, the first elastic member 12 is also sandwiched between the hole wall of the first fixing hole 118 and the outer circumferential surface of the fixing shaft 13, and between the hole wall of the second fixing hole 119 and the outer circumferential surface of the fixing shaft 13.

In some embodiments, the test fixture 100 further comprises an intermediate connector 30, the intermediate connector 30 being coupled to the second collet 21 and configured to apply a radial force to the second collet 21 in a radial direction of the second clamping channel 212. When the middle connector 30 applies a radial force to the first collet 11, since the first collet 11 and the test piece 200 are connected by the second elastic member 22, the radial force may also act on the test piece 200 and perform a radial static load test on the test piece 200.

Preferably, there are two intermediate connectors 30, and the two intermediate connectors 30 are oppositely disposed and respectively connected to opposite sides of the second jacket 21. Two radial forces which are arranged oppositely are respectively applied to the two middle connecting pieces 30 through an external force application device, and the piece 200 to be tested can be squeezed, so that the radial static load performance of the piece 200 to be tested in a squeezing state can be tested. The to-be-tested piece 200 can be stretched by applying two radial forces oppositely arranged to the two middle connecting pieces 30 through the external force application device, so as to test the radial static load performance of the to-be-tested piece 200 in a stretching state.

Further, the second clamping sleeve 21 has a first side and a second side opposite to each other, 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 abuts against the connecting frame 117. One of the intermediate connectors 30 is inserted through a first side of the second jacket 21 and connected to the second jacket 21, and the other intermediate connector 30 is inserted through the connecting frame 117 and the other side of the second jacket 21 in sequence and connected to the second jacket 21, so that a radial force can be applied to the second jacket 21 from both sides of the second jacket 21.

In other embodiments, the connection manner between the two intermediate connectors 30 and the second jacket 21 is not limited to the above-mentioned one, and the two intermediate connectors 30 may be respectively inserted through two opposite sides of the second jacket 21 along the axial direction of the first clamping passage 112 and apply force to the second jacket 21.

Further, the second jacket 21 is screwed with the intermediate connector 30, so that the reliability of the connection between the intermediate connector 30 and the second jacket 21 can be improved, and the external force applying device can stably apply a radial force to the second jacket 21 through the intermediate connector 30.

Specifically, the first side and the second side of the second jacket 21 are further respectively opened with a threaded hole 218, each intermediate connector 30 is provided with an external thread structure, and the two intermediate connectors 30 are respectively screwed with the threaded holes 218 of the first side and the second side. Thus, the intermediate connector 30 can be easily attached to and detached from the second jacket 21.

It should be noted that, when the middle connecting member 30 is engaged with the threaded hole 218, in order to prevent the middle connecting member 30 from penetrating through the second clamping sleeve 21 and the second elastic member 22 and being in rigid contact with the to-be-tested object 200, it is necessary to ensure that the threaded hole 218 on the second clamping sleeve 21 is a blind hole.

Specifically, each intermediate connector 30 comprises a transmission body 31 and a pull ring 33 coupled to the transmission body 31, the transmission body 31 of each intermediate connector 30 is screwed with the corresponding threaded hole 218, and the pull ring 33 is disposed at one end of the transmission body 31 far away from the second jacket 21 and facilitates the fixing of an external force application device to itself, so as to apply force to the intermediate connector 30.

In the test tool 100, during testing, the to-be-tested piece 200 is located in the second clamping channel 212, and the second elastic piece 22 is clamped between the to-be-tested piece 200 and the inner wall of the second clamping channel 212. Due to the arrangement of the second elastic member 22, the test piece 200 can be prevented from being damaged by collision with the second jacket 21, and thus the damage rate of the test piece 200 can be effectively reduced.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

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

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;

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;

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.