CN218837477U - Testing arrangement of part local static rigidity - Google Patents
Testing arrangement of part local static rigidity Download PDFInfo
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- CN218837477U CN218837477U CN202223186857.6U CN202223186857U CN218837477U CN 218837477 U CN218837477 U CN 218837477U CN 202223186857 U CN202223186857 U CN 202223186857U CN 218837477 U CN218837477 U CN 218837477U
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Abstract
The utility model discloses a testing arrangement of local quiet rigidity of part, include: the device comprises a loading device, a force transmission device, a supporting base for placing a piece to be tested and a fixing device for fixing the piece to be tested on the supporting base; the loading device comprises a loading mechanism and a push-pull dynamometer, and the loading mechanism can apply pushing force or pulling force to the push-pull dynamometer; the force transmission device comprises a transmission shaft, one end of the transmission shaft is detachably connected with the piece to be tested, the other end of the transmission shaft is fixedly connected with one end of the push-pull dynamometer, and one end, far away from the transmission shaft, of the push-pull dynamometer is fixedly connected with the loading mechanism. The problem that the existing testing device for local static rigidity only applies force in one direction generally and is not suitable for testing the local static rigidity of a part stressed in two directions is solved.
Description
Technical Field
The utility model relates to a lathe detects technical field, especially relates to a testing arrangement of local quiet rigidity of part.
Background
The local static rigidity of the part is embodied as the local static load resisting capacity of the part, and the part deforms in the using process due to the fact that the local static rigidity of the part does not reach the standard, so that the part cannot guarantee the self precision, and the precision of mechanical equipment for installing the part is further influenced. For example, the joint of the ram of the machine tool and the screw nut shell seat is a weak part in the machine tool, the screw nut shell is assembled on the screw nut shell seat, and the nut shell is matched with a ball screw of the machine tool to drive the ram to reciprocate, so that the local static rigidity of the joint of the ram and the screw nut shell seat influences the machining precision of a tool point of the machine tool, and further influences the quality of a machined part. Therefore, the local static stiffness of the component needs to be tested during the component manufacturing process to ensure the final product quality.
The joint of the screw nut shell seat and the machine tool ram is stressed in two directions along the axial direction, the existing testing device for local static rigidity only applies force in one direction generally and is not suitable for testing the local static rigidity of a part stressed in two directions, so that the local static rigidity of the part stressed in two directions cannot be accurately measured, and the delivery quality of the part is influenced.
Disclosure of Invention
The utility model provides a testing arrangement of the quiet rigidity of part to overcome the testing arrangement of the quiet rigidity of current part and only one-way application of force usually, be not suitable for the quiet rigidity test of part of two-way atress, influence the problem that the quality was delivered to the part.
In order to realize the purpose, the technical scheme of the utility model is that:
a device for testing local static stiffness of a component, comprising: the device comprises a loading device, a force transmission device, a supporting base for placing a piece to be tested and a fixing device for fixing the piece to be tested on the supporting base;
the loading device comprises a loading mechanism and a push-pull dynamometer, and the loading mechanism can apply pushing force or pulling force to the push-pull dynamometer;
the force transmission device comprises a transmission shaft, one end of the transmission shaft is detachably connected with the piece to be tested, the other end of the transmission shaft is fixedly connected with one end of the push-pull dynamometer, and one end, far away from the transmission shaft, of the push-pull dynamometer is fixedly connected with the loading mechanism.
Further, the loading mechanism comprises a loading bolt, a top block seat, a first adjusting nut and a second adjusting nut; the ejector block seat is provided with a loading bolt mounting hole, the loading bolt penetrates through the loading bolt mounting hole and is in sliding connection with the ejector block seat, the ejector block seat is fixed on the fixing device, one end of the loading bolt is fixedly connected with the push-pull force meter, and the first adjusting nut and the second adjusting nut are arranged on the loading bolt and are located on two sides of the ejector block seat.
Further, the axis of the transmission shaft and the axis of the loading bolt are in the same straight line.
Furthermore, the fixing device comprises a first fixing seat and a second fixing seat which are respectively arranged at two ends of the supporting base; the first fixing seat and the second fixing seat are fixedly connected with the supporting base, the first fixing seat and the second fixing seat are connected with a piece to be detected through bolts, and the top block seat is fixed on the first fixing seat.
Furthermore, the force transmission device further comprises a flange plate, the flange plate is fixed at one end of the transmission shaft, and the flange plate is connected with the piece to be tested through bolts.
Further, the supporting base comprises a fixing plate and a hanging ring; the fixed plate is used for supporting a to-be-detected piece, the plane where the fixed plate is located is parallel to the horizontal plane, and the hanging rings are arranged at four corners of the fixed plate.
Further, the device also comprises a detection device, and the detection device is used for detecting the displacement of the surface of the piece to be detected.
The utility model has the advantages that:
the piece that awaits measuring is placed and is fixed with fixing device on supporting the base, applys thrust or pulling force to the push-and-pull effort meter through loading mechanism, and exerted thrust or pulling force are transmitted for the piece that awaits measuring by the push-and-pull effort meter through the transmission axle, confirm the size and the direction of exerting force at present according to the reading of push-and-pull effort meter, the utility model discloses but two-way application of force in the piece that awaits measuring, the testing arrangement of having solved current local quiet rigidity only one-way application of force usually, be not suitable for the local quiet rigidity test of the part of two-way atress, influence the part and deliver the problem of quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram i of a device for testing local static stiffness of a component disclosed by the present invention;
fig. 2 is a schematic structural diagram ii of a device for testing local static stiffness of a component disclosed in the present invention;
fig. 3 is a schematic structural diagram of a loading device and a force transmission device of a testing device for local static stiffness of a component according to the present invention;
fig. 4 is a schematic structural diagram of a detection device of a testing device for local static stiffness of a component according to the present invention;
FIG. 5 is a view from direction D of FIG. 1;
FIG. 6 is a view taken along line C of FIG. 1;
in the figure: 1. the device comprises a supporting base, 1-1 parts, a fixing plate, 1-2 parts, a lifting ring, 2 parts, a fixing device, 2-1 parts, a first fixing seat, 2-2 parts, a second fixing seat, 3 parts, a loading device, 3-1 parts, a loading bolt, 3-2 parts, a top block seat, 3-3 parts, a push-pull force meter, 3-4 parts, a first adjusting nut, 3-5 parts, a second adjusting nut, 4 parts, a force transmission device, 4-1 parts, a flange plate, 4-2 parts, a transmission shaft, 5 parts, a detection device, 5-1 parts, an inductance measuring head, 5-2 parts, a reading meter, an A part, a ram part, a B part and a lead screw nut shell seat.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The embodiment provides a device for testing local static stiffness of a component, as shown in fig. 1, including: the device comprises a loading device 3, a force transmission device 4, a supporting base 1 for placing a piece to be tested and a fixing device 2 for fixing the piece to be tested on the supporting base 1, wherein in the embodiment, the piece to be tested is divided into two parts, one part is a ram A, the other part is a screw nut shell seat B assembled on the ram A, and in the embodiment, the local static stiffness at the joint of the ram A and the screw nut shell seat B is to be tested;
as shown in fig. 3, the loading device 3 comprises a loading bolt 3-1, a top block seat 3-2, a push-pull force gauge 3-3, a first adjusting nut 3-4 and a second adjusting nut 3-5;
the ejector block seat 3-2 is provided with a loading bolt mounting hole, the loading bolt 3-1 penetrates through the loading bolt mounting hole and is in sliding connection with the ejector block seat 3-2, the ejector block seat 3-2 is fixed on the fixing device 2 through a bolt and is convenient to replace after being damaged, one end of the loading bolt 3-1 is fixedly connected with the push-pull force meter 3-3, and the first adjusting nut 3-4 and the second adjusting nut 3-5 are arranged on the loading bolt 3-1 and are positioned on two sides of the ejector block seat 3-2;
as shown in fig. 3, the force transmission device 4 includes a transmission shaft 4-2, one end of the transmission shaft 4-2 is connected to a lead screw nut housing B assembled on the ram a through a bolt, the other end of the transmission shaft 4-2 is connected to one end of a push-pull force meter 3-3 through a thread, and one end of the push-pull force meter 3-3 away from the transmission shaft 4-2 is connected to the loading bolt 3-1 through a thread.
The ram A is placed on a supporting base 1 and fixed by a fixing device 2, a top block seat 3-2 is fixed on the fixing device 2, the top block seat 3-2 is static relative to the ram A, a loading bolt 3-1 penetrates through the top block seat 3-2, the loading bolt 3-1 is in sliding connection with the top block seat 3-2, the loading bolt 3-1 can move in two directions along the axial direction of the loading bolt, the position of the loading bolt 3-1 relative to the top block seat 3-2 is adjusted by rotating a first adjusting nut 3-4 and a second adjusting nut 3-5, the loading bolt 3-1 is close to or far away from the ram A, further thrust or tension is applied to a lead screw nut shell seat B, the applied force is transmitted to a push-pull force meter 3-2 through a push-pull force meter 3-3, the received force is transmitted to the lead screw nut shell seat B through a transmission shaft 4-2, an operator confirms the magnitude and direction of the current applied force according to the reading of the push-pull force meter 3-pull force meter to simulate the working condition that the lead screw nut shell seat B is subjected to the bidirectional force along the axial direction of a ball screw;
when tension needs to be applied to the lead screw nut shell seat B, an operator rotates the first adjusting nut 3-4 to enable the first adjusting nut to rotate towards one end close to the lead screw nut shell seat B along the loading bolt 3-1, and simultaneously rotates the second adjusting nut 3-5 towards the same direction, so that the position of the loading bolt 3-1 can be adjusted conveniently, after the first adjusting nut 3-4 is adjusted to a proper position according to the reading of the push-pull dynamometer 3-3, the second adjusting nut 3-5 is rotated to enable the second adjusting nut to be close to the top block seat 3-2, and self-locking is formed;
when thrust needs to be applied to the lead screw nut shell seat B, an operator rotates the second adjusting nut 3-5 to enable the second adjusting nut to rotate towards one end far away from the lead screw nut shell seat B along the loading bolt 3-1, meanwhile, the first adjusting nut 3-4 rotates towards the same direction, so that the position of the loading bolt 3-1 can be adjusted conveniently, after the second adjusting nut 3-5 is adjusted to a proper position according to the reading of the push-pull dynamometer 3-3, the first adjusting nut 3-4 is rotated to enable the second adjusting nut to be close to the ejector block seat 3-2, and self-locking is achieved.
In a specific embodiment, the axis of the transmission shaft 4-2 and the axis of the loading bolt 3-1 are in the same straight line, so that the problem that the measurement accuracy of subsequent deformation is influenced due to the fact that the reading of the push-pull force meter 3-3 is inconsistent with the actual stress of the transmission shaft 4-2 due to force decomposition caused by angle deviation is avoided.
In a specific embodiment, as shown in fig. 2, the fixing device 2 includes a first fixing seat 2-1 and a second fixing seat 2-2 respectively disposed at two ends of the supporting base 1;
as shown in fig. 5 and 6, the first fixing seat 2-1 and the second fixing seat 2-2 are fixedly connected with the supporting base 1, the first fixing seat 2-1 and the second fixing seat 2-2 are connected with the ram a through bolts, and the top block seat 3-2 is fixed on the first fixing seat 2-1;
the first fixing seat 2-1 and the second fixing seat 2-2 are respectively arranged at two ends of the ram A to fix the ram A, so that the ram A is prevented from integrally displacing after the screw nut shell seat B is stressed, and the measuring precision of subsequent deformation is prevented from being influenced.
In a specific embodiment, as shown in fig. 3, the force transmission device 4 further includes a flange plate 4-1, the flange plate 4-1 is fixed at one end of the transmission shaft 4-2, the flange plate 4-1 is connected with the lead screw nut shell seat B through a bolt, and the flange plate 4-1 can increase the contact area with the lead screw nut shell seat B, so as to avoid surface damage caused by too concentrated local stress on the lead screw nut shell seat B.
In a specific embodiment, as shown in fig. 2, the supporting base 1 comprises a fixed plate 1-1 and a hanging ring 1-2;
the fixed plate 1-1 is used for supporting the ram A, the plane where the fixed plate 1-1 is located is parallel to the horizontal plane, and the hanging rings 1-2 are arranged at four corners of the fixed plate 1-1, so that convenience is brought to lifting and carrying of the supporting base 1.
In a particular embodiment, as shown in fig. 1, the support base 1 is provided with criss-cross reinforcing ribs, ensuring that the support base 1 has sufficient strength to carry the ram a.
In a specific embodiment, as shown in fig. 4, the detection device 5 is further included, the detection device 5 is used for detecting a displacement amount of the surface of the ram a, the detection device 5 includes an inductance measuring head 5-1 and a reading meter 5-2, the inductance measuring head 5-1 is fixed through a support structure and then is in mechanical contact with the ram a, the inductance measuring head 5-1 is preferably a mare inductance measuring head P2004M, the measurement precision is high, the measurement range is wide, an operator measures a displacement amount of the surface of the ram a after the screw nut housing B is stressed by using the inductance measuring head 5-1, and reads the displacement amount by using the reading meter 5-2, so that a deformation amount at a connection position between the ram a and the screw nut housing B is known, and further, a local static stiffness at the connection position between the ram a and the screw nut housing B can be obtained.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. A testing arrangement of local static rigidity of part, its characterized in that includes: the device comprises a loading device (3), a force transmission device (4), a supporting base (1) for placing a piece to be tested and a fixing device (2) for fixing the piece to be tested on the supporting base (1);
the loading device (3) comprises a loading mechanism and a push-pull dynamometer (3-3), and the loading mechanism can apply pushing force or pulling force to the push-pull dynamometer (3-3);
the force transmission device (4) comprises a transmission shaft (4-2), one end of the transmission shaft (4-2) is detachably connected with the piece to be tested, the other end of the transmission shaft (4-2) is fixedly connected with one end of a push-pull force meter (3-3), and one end, far away from the transmission shaft (4-2), of the push-pull force meter (3-3) is fixedly connected with a loading mechanism.
2. The testing device for the local static rigidity of the component according to claim 1, wherein the loading mechanism comprises a loading bolt (3-1), a top block seat (3-2), a first adjusting nut (3-4) and a second adjusting nut (3-5); the ejector block seat (3-2) is provided with a loading bolt mounting hole, the loading bolt (3-1) penetrates through the loading bolt mounting hole and is in sliding connection with the ejector block seat (3-2), the ejector block seat (3-2) is fixed on the fixing device (2), one end of the loading bolt (3-1) is fixedly connected with the push-pull force meter (3-3), and the first adjusting nut (3-4) and the second adjusting nut (3-5) are arranged on the loading bolt (3-1) and located on two sides of the ejector block seat (3-2).
3. A test device for local static stiffness of components according to claim 2, wherein the axis of the conductive shaft (4-2) and the axis of the loading bolt (3-1) are in the same straight line.
4. A device for testing the local static stiffness of a component according to claim 2, wherein the fixing device (2) comprises a first fixing seat (2-1) and a second fixing seat (2-2) respectively arranged at two ends of the supporting base (1);
the first fixing seat (2-1) and the second fixing seat (2-2) are fixedly connected with the supporting base (1), the first fixing seat (2-1) and the second fixing seat (2-2) are connected with a piece to be tested through bolts, and the top block seat (3-2) is fixed on the first fixing seat (2-1).
5. The device for testing the local static rigidity of the component according to claim 1, wherein the force transmission device (4) further comprises a flange (4-1), the flange (4-1) is fixed at one end of the transmission shaft (4-2), and the flange (4-1) is connected with the component to be tested through bolts.
6. The testing device for the local static rigidity of the component according to the claim 1, wherein the supporting base (1) comprises a fixed plate (1-1) and a lifting ring (1-2);
the fixed plate (1-1) is used for supporting a to-be-detected piece, the plane of the fixed plate (1-1) is parallel to the horizontal plane, and the hanging rings (1-2) are arranged at four corners of the fixed plate (1-1).
7. The device for testing the local static stiffness of the component according to claim 1, further comprising a detection device (5), wherein the detection device (5) is used for detecting the displacement of the surface of the component to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223186857.6U CN218837477U (en) | 2022-11-29 | 2022-11-29 | Testing arrangement of part local static rigidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223186857.6U CN218837477U (en) | 2022-11-29 | 2022-11-29 | Testing arrangement of part local static rigidity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218837477U true CN218837477U (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223186857.6U Active CN218837477U (en) | 2022-11-29 | 2022-11-29 | Testing arrangement of part local static rigidity |
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| CN (1) | CN218837477U (en) |
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- 2022-11-29 CN CN202223186857.6U patent/CN218837477U/en active Active
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