CN220063692U - In-situ mechanical loading device for industrial CT - Google Patents
In-situ mechanical loading device for industrial CT Download PDFInfo
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- CN220063692U CN220063692U CN202321215845.3U CN202321215845U CN220063692U CN 220063692 U CN220063692 U CN 220063692U CN 202321215845 U CN202321215845 U CN 202321215845U CN 220063692 U CN220063692 U CN 220063692U
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- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 230000009467 reduction Effects 0.000 claims description 31
- 230000003287 optical effect Effects 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims 1
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- 239000000463 material Substances 0.000 abstract description 10
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000012937 correction Methods 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 2
- 238000009864 tensile test Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
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- 238000004458 analytical method Methods 0.000 description 2
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- 238000011160 research Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
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Abstract
The utility model discloses an in-situ mechanical loading device for industrial CT, comprising: a housing assembly; the upper clamping assembly is fixed at the top of the shell assembly; the transmission assembly is arranged at the bottom of the shell assembly; the lower clamping assembly is connected with the transmission assembly, and the transmission assembly drives the lower clamping assembly to move up and down relative to the upper clamping assembly; the device can be placed in industrial CT, is mainly used for the tensile test of nonmetallic materials and metallic materials, reduces the difficulty of curve correction, and further improves the measurement accuracy.
Description
Technical Field
The utility model relates to an in-situ mechanical loading device for industrial CT, and belongs to the technical field of analytical test instruments.
Background
The materials can be subjected to the combined action of various forces in the using process, so that the materials can be invalid, and huge economic loss is caused. In order to reduce economic loss and harm, people are required to continuously and deeply study the failure reason of the material, but the traditional test method has a single form and cannot meet the requirement of scientific researchers on continuous exploration of the material field. In recent years, scientific researchers pay more attention to the micro-deformation damage mechanism of materials, and knowledge of microstructure is considered to further improve the analysis capability of material failure.
The micro-deformation damage mechanism of materials is studied by using industrial CT, and most researchers can only observe the damage effect of samples in a natural state by using industrial CT due to the lack of a proper loading device. Fewer instruments are required for detection under industrial CT where the sample is subjected to the required mechanical loading. Since most industrial CT is not large in size, a small-sized material in-situ mechanical loading device for industrial CT is needed for scientific research test. The existing in-situ tester for industrial CT has the problems of imperfect structure, lower measurement precision and poor reliability, and can not completely meet the scientific research requirements.
Disclosure of Invention
The utility model aims to provide an in-situ mechanical loading device for industrial CT, which can be placed in industrial CT and is mainly used for tensile test of nonmetallic materials and metallic materials.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
an in situ mechanical loading device for industrial CT, comprising:
a housing assembly;
the upper clamping assembly is fixed at the top of the shell assembly;
the transmission assembly is arranged at the bottom of the shell assembly;
the lower clamping assembly is connected with the transmission assembly, and the transmission assembly drives the lower clamping assembly to move up and down relative to the upper clamping assembly.
Preferably, the shell component comprises a bottom plate, a bottom shell, a middle seat, an outer cylinder and an upper seat, wherein the bottom shell is fixed on the bottom plate through screws, the middle seat is fixed on the bottom shell through screws, the outer cylinder is fixed on the top of the middle seat in an adhesive mode, the upper seat is fixed on the top of the outer cylinder in an adhesive mode, and at least one operation groove is formed in the side wall of the outer cylinder.
Preferably, the upper clamping assembly comprises an upper screw rod, an upper lock nut, an upper clamp and an upper pressing sheet, wherein the top of the upper screw rod penetrates through the upper seat and then is fixed through the upper lock nut, the upper clamp is arranged at the bottom of the upper screw rod, and the upper pressing sheet is detachably fixed on the upper clamp through a screw.
Preferably, the transmission assembly comprises a servo motor, a speed reducing mechanism and a transmission mechanism; the speed reducing mechanism comprises a speed reducing shell, a worm wheel, an upper bearing, a lower bearing, a worm, a second gear and a ball screw;
the speed reducing shell is fixed on the bottom plate through a screw, the upper bearing, the worm wheel and the lower bearing are sleeved in a limit groove at the optical axis end of the ball screw from top to bottom, a first key groove is formed in the inner wall of the worm wheel, a second key groove is formed in the optical axis end of the ball screw, a key is inserted after the first key groove and the second key groove are oppositely arranged, and torque transmission between the worm wheel and the optical axis end of the ball screw is achieved through the key;
the optical axis end of the ball screw is vertically inserted into the speed reduction shell, and the outer ring of the upper bearing and the outer ring of the lower bearing are respectively matched with the inner wall of the speed reduction shell to realize positioning;
the worm is horizontally and rotatably arranged in the speed reduction shell, the worm is meshed with the worm wheel, and the input end of the worm penetrates through the speed reduction shell and is fixedly connected with the second gear;
the servo motor is fixed on the speed reduction shell, a first gear is arranged at the output end of the servo motor, and the first gear is meshed with the second gear;
the servo motor drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the worm to rotate, the worm wheel is driven to rotate when the worm rotates, and the worm wheel and the ball screw shaft end synchronously rotate through key connection;
the transmission mechanism comprises a supporting seat, a guide sleeve, a ball screw nut, an anti-rotation pin and an anti-rotation bearing;
the support seat is fixed on the speed reduction shell through a screw, the threaded end of the ball screw penetrates through the speed reduction shell and is arranged in the support seat, the inner ring of the ball screw nut is installed on the threaded end of the ball screw in a threaded fit mode, the outer ring of the ball screw nut is fixed at the bottom of the guide sleeve, the support seat is sleeved outside the guide sleeve, an inserting groove with an upward opening is formed in the side wall of the support seat, the anti-rotation pin is arranged on the outer wall of the guide sleeve, the anti-rotation bearing is sleeved on the anti-rotation pin, and the anti-rotation bearing and the anti-rotation pin are arranged in the inserting groove;
the anti-rotation bearing can prevent the guide sleeve from rotating, and due to the existence of the anti-rotation bearing, the ball screw rotates to enable the ball screw nut to move upwards or downwards, so that the guide sleeve is driven to move up and down.
Preferably, the lower clamping assembly comprises a force sensor, a lower clamp, a lower pressing sheet and a switching rod;
the force sensor is installed on the guide sleeve through a screw, the switching rod is installed at the top of the force sensor, the lower clamp is installed at the top of the switching rod, and the lower pressing sheet is detachably fixed on the lower clamp through the screw.
Preferably, a motor encoder is mounted on the servo motor.
Preferably, a threaded mounting groove is formed in the bottom of the switching rod, and the top of the force sensor is fixed in the threaded mounting groove in a threaded fit mode.
The working principle of the utility model is as follows:
the upper clamp is fixed with the upper pressing sheet through a screw, the upper end of the sample can be clamped, and the lower clamp is fixed with the lower pressing sheet through a screw, and the lower end of the sample can be clamped.
The servo motor drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the worm to rotate, the worm wheel is driven to rotate when the worm rotates, and the worm wheel and the optical shaft end of the ball screw are connected through a key to synchronously rotate; the ball screw rotates to enable the ball screw nut to move upwards or downwards, so as to drive the guide sleeve to move up and down;
the upper end of the specimen is stationary, so that displacement of the lower clamp is representative of elongation of the specimen. When the sample is elongated, the sample is acted by tensile force, and the force sensor can record the stress of the sample in real time;
an encoder is arranged behind the servo motor, the encoder can record the rotation angle of the servo motor in real time, and the displacement of the lower clamp can be calculated in real time through a reduction ratio.
The utility model has the technical effects and advantages that:
1. according to the utility model, the output torque is further increased through worm wheel and worm reduction, the worm wheel is sleeved at the optical axis end of the ball screw, a key groove is arranged in the worm wheel, the key groove is arranged at the optical axis end of the ball screw, and torque transmission between the worm wheel and the optical axis end of the ball screw is realized through keys.
2. The upper bearing and the lower bearing play roles in positioning the worm wheel and the ball screw; when the worm rotates, the worm wheel is driven to rotate, the worm wheel and the ball screw are synchronously rotated through key connection, and due to the existence of the anti-rotation stop block, the ball screw rotates to enable the ball screw nut to rotate upwards or downwards, so that the ball screw nut sleeve is driven to move up and down.
3. According to the loading device, by installing the independent force sensor, the force measurement links are reduced, and the force measurement precision is improved.
4. The utility model reduces the difficulty of curve correction and further improves the measurement precision through the high-rigidity transmission system.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
Fig. 2 is a cross-sectional view of the utility model.
FIG. 3 is a schematic view of the cross-sectional structure of FIG. 2 taken along the A-A direction in accordance with the present utility model.
Fig. 4 is a partial schematic view of the present utility model.
Fig. 5 is a cross-sectional view of the second embodiment of the present utility model.
Fig. 6 is a cross-sectional view III of the present utility model.
In the figure:
the device comprises a shell component 1, an upper clamping component 2, a transmission component 3 and a lower clamping component 4;
a bottom plate 111, an operation groove 112, a bottom case 113, a ball screw 115, a ball screw nut 116, and a sample 119;
upper seat 121, threaded mounting groove 124, force sensor 125, middle seat 129;
an outer cylinder 130;
a speed reduction shell 141, a worm wheel 142, a key 143, a worm 144, an input end 145 of the worm, a second gear 146, an output end 147 of a servo motor, a first gear 148 and a servo motor 149;
a motor encoder 150;
an optical axis end 161 of the ball screw;
an upper bearing 171, a lower bearing 172;
a support base 181;
guide sleeve 195, anti-rotation pin 196, anti-rotation bearing 197, slot 199;
a transfer rod 201, a lower clamp 202, a lower pressing piece 203, an upper clamp 204, an upper pressing piece 205, an upper lock nut 207 and an upper screw 208.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
The present embodiment provides an in situ mechanical loading device for industrial CT as shown in fig. 1-6, comprising: a housing assembly 1, an upper clamping assembly 2, a transmission assembly 3 and a lower clamping assembly 4;
the shell assembly comprises a bottom plate 111, a bottom shell 113, a middle seat 129, an outer cylinder 130 and an upper seat 121, wherein the bottom shell is fixed on the bottom plate through screws, the middle seat is fixed on the bottom shell through screws, the outer cylinder is adhered and fixed on the top of the middle seat, the upper seat is adhered and fixed on the top of the outer cylinder, and at least one operation groove 112 is formed in the side wall of the outer cylinder;
the upper clamping assembly is fixed at the top of the shell assembly; the upper clamping assembly comprises an upper screw rod 208, an upper lock nut 207, an upper clamp 204 and an upper pressing sheet 205, wherein the top of the upper screw rod passes through the upper seat and then is fixed through the upper lock nut, the upper clamp is arranged at the bottom of the upper screw rod, and the upper pressing sheet is detachably fixed on the upper clamp through a screw;
the transmission assembly is arranged at the bottom of the shell assembly; the transmission assembly comprises a servo motor 149, a speed reducing mechanism and a transmission mechanism; the speed reduction mechanism includes a speed reduction case 141, a worm wheel 142, an upper bearing 171, a lower bearing 172, a worm 144, a second gear 146, and a ball screw 115;
the speed reduction shell is fixed on the bottom plate through a screw, the upper bearing, the worm wheel and the lower bearing are sleeved in a limit groove at the optical axis end 161 of the ball screw from top to bottom, a first key groove is formed in the inner wall of the worm wheel, a second key groove is formed in the optical axis end of the ball screw, a key 143 is inserted after the first key groove and the second key groove are oppositely arranged, and torque transmission between the worm wheel and the optical axis end of the ball screw is realized through the key;
the optical axis end of the ball screw is vertically inserted into the speed reduction shell, and the outer ring of the upper bearing and the outer ring of the lower bearing are respectively matched with the inner wall of the speed reduction shell to realize positioning;
the worm is horizontally and rotatably arranged in the speed reduction shell, the worm is meshed with the worm wheel, and the input end 145 of the worm penetrates through the speed reduction shell and is fixedly connected with the second gear;
the servo motor is fixed on the speed reduction shell, a first gear 148 is arranged on an output end 147 of the servo motor, and the first gear is meshed with the second gear;
the servo motor drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the worm to rotate, the worm wheel is driven to rotate when the worm rotates, and the worm wheel and the ball screw shaft end synchronously rotate through key connection;
the transmission mechanism comprises a supporting seat 181, a guide sleeve 195, a ball screw nut 116, an anti-rotation pin 196 and an anti-rotation bearing 197;
the support seat is fixed on the speed reduction shell through a screw, the threaded end of the ball screw penetrates through the speed reduction shell and is arranged in the support seat, the inner ring of the ball screw nut is installed on the threaded end of the ball screw in a threaded fit mode, the outer ring of the ball screw nut is fixed at the bottom of the guide sleeve, the support seat is sleeved outside the guide sleeve, an upward opening slot 199 is formed in the side wall of the support seat, the anti-rotation pin is arranged on the outer wall of the guide sleeve, the anti-rotation bearing is sleeved on the anti-rotation pin, and the anti-rotation bearing and the anti-rotation pin are arranged in the slot;
the anti-rotation bearing can prevent the guide sleeve from rotating, and due to the existence of the anti-rotation bearing, the ball screw rotates to enable the ball screw nut to move upwards or downwards so as to drive the guide sleeve to move up and down;
the lower clamping assembly is connected with the transmission assembly, and the transmission assembly drives the lower clamping assembly to move up and down relative to the upper clamping assembly; the lower clamping assembly comprises a force sensor 125, a lower clamp 202, a lower pressing piece 203 and an adapter rod 201;
the force sensor is installed on the guide sleeve through a screw, the switching rod is installed at the top of the force sensor, the lower clamp is installed at the top of the switching rod, and the lower pressing sheet is detachably fixed on the lower clamp through the screw.
Example two
As shown in fig. 3, an in-situ mechanical loading device for industrial CT according to the first embodiment is different in that the servo motor is mounted with a motor encoder 150.
Example III
As shown in fig. 6, an in-situ mechanical loading device for industrial CT according to the first embodiment is different in that the bottom of the adapter rod is provided with a threaded mounting groove 124, and the top of the force sensor is screwed and fixed in the threaded mounting groove.
The working principle of the utility model is as follows:
the upper clamp is fixed with the upper pressing sheet through a screw, the upper end of the sample 119 can be clamped, and the lower clamp is fixed with the lower pressing sheet through a screw, and the lower end of the sample can be clamped.
The servo motor drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the worm to rotate, the worm wheel is driven to rotate when the worm rotates, and the worm wheel and the optical shaft end of the ball screw are connected through a key to synchronously rotate; the ball screw rotates to enable the ball screw nut to move upwards or downwards, so as to drive the guide sleeve to move up and down;
the upper end of the specimen is stationary, so that displacement of the lower clamp is representative of elongation of the specimen. When the sample is elongated, the sample is acted by tensile force, and the force sensor can record the stress of the sample in real time;
an encoder is arranged behind the servo motor, the encoder can record the rotation angle of the servo motor in real time, and the displacement of the lower clamp can be calculated in real time through a reduction ratio.
According to the utility model, the output torque is further increased through worm wheel and worm reduction, the worm wheel is sleeved at the optical axis end of the ball screw, a key groove is arranged in the worm wheel, the key groove is arranged at the optical axis end of the ball screw, and torque transmission between the worm wheel and the optical axis end of the ball screw is realized through keys. The upper bearing and the lower bearing play roles in positioning the worm wheel and the ball screw; when the worm rotates, the worm wheel is driven to rotate, the worm wheel and the ball screw are synchronously rotated through key connection, and due to the existence of the anti-rotation stop block, the ball screw rotates to enable the ball screw nut to rotate upwards or downwards, so that the ball screw nut sleeve is driven to move up and down. The loading device reduces force measurement links and increases force measurement accuracy by installing an independent force sensor. The device reduces the difficulty of curve correction and further improves the measurement accuracy through the high-rigidity transmission system.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Claims (7)
1. An in situ mechanical loading device for industrial CT, comprising:
a housing assembly (1);
the upper clamping assembly (2) is fixed on the top of the shell assembly (1);
the transmission assembly (3) is arranged at the bottom of the shell assembly (1);
the lower clamping assembly (4), lower clamping assembly (4) with drive assembly (3) are connected, drive assembly (3) drive lower clamping assembly (4) is relative to last clamping assembly (2) reciprocates.
2. An in-situ mechanical loading device for industrial CT as in claim 1 wherein said housing assembly (1) comprises a bottom plate (111), a bottom shell (113), a middle base (129), an outer cylinder (130) and an upper base (121), said bottom shell (113) being fixed to said bottom plate (111) by screws, said middle base (129) being fixed to said bottom shell (113) by screws, said outer cylinder (130) being adhesively fixed to the top of said middle base (129), said upper base (121) being adhesively fixed to the top of said outer cylinder (130), at least one operating slot (112) being provided on the side wall of said outer cylinder (130).
3. An in-situ mechanical loading device for industrial CT as in claim 2 wherein said upper clamping assembly (2) comprises an upper screw (208), an upper lock nut (207), an upper clamp (204) and an upper press piece (205), wherein the top of said upper screw (208) is fixed by said upper lock nut (207) after passing through said upper seat (121), said upper clamp (204) is mounted on the bottom of said upper screw (208), and said upper press piece (205) is detachably fixed to said upper clamp (204) by a screw.
4. An in situ mechanical loading device for industrial CT as in claim 3 wherein said drive assembly (3) comprises a servo motor (149), a reduction mechanism and a drive mechanism; the speed reducing mechanism comprises a speed reducing shell (141), a worm wheel (142), an upper bearing (171), a lower bearing (172), a worm, a second gear (146) and a ball screw (115);
the speed reduction shell (141) is fixed on the bottom plate (111) through screws, the upper bearing (171), the worm wheel (142) and the lower bearing (172) are sleeved in a limit groove of an optical axis end (161) of the ball screw from top to bottom, a first key groove is formed in the inner wall of the worm wheel (142), a second key groove is formed in the optical axis end (161) of the ball screw, a key (143) is inserted after the first key groove and the second key groove are oppositely arranged, and torque transmission between the worm wheel (142) and the optical axis end (161) of the ball screw is achieved through the key (143);
the optical axis end (161) of the ball screw is vertically inserted into the speed reduction shell (141), and the outer ring of the upper bearing (171) and the outer ring of the lower bearing (172) are respectively matched with the inner wall of the speed reduction shell (141) to realize positioning;
the worm is horizontally and rotatably arranged in the speed reduction shell (141), the worm is meshed with the worm wheel (142), and an input end (145) of the worm passes through the speed reduction shell (141) and is fixedly connected with the second gear (146);
the servo motor (149) is fixed on the reduction gearbox (141), a first gear (148) is arranged on the output end (147) of the servo motor, and the first gear (148) is meshed with the second gear (146);
the servo motor (149) drives the first gear (148) to rotate, the first gear (148) drives the second gear (146) to rotate, the second gear (146) drives the worm to rotate, the worm wheel (142) is driven to rotate when the worm rotates, and the worm wheel (142) and the ball screw optical shaft end are connected to synchronously rotate through the key (143);
the transmission mechanism comprises a supporting seat (181), a guide sleeve (195), a ball screw nut (116), an anti-rotation pin (196) and an anti-rotation bearing (197);
the supporting seat (181) is fixed on the speed reduction shell (141) through a screw, the threaded end of the ball screw penetrates through the speed reduction shell (141) and is arranged in the supporting seat (181), the inner ring of the ball screw nut (116) is installed on the threaded end of the ball screw through threaded fit, the outer ring of the ball screw nut (116) is fixed at the bottom of the guide sleeve (195), the supporting seat (181) is sleeved outside the guide sleeve (195), an inserting groove (199) with an upward opening is formed in the side wall of the supporting seat (181), the anti-rotation pin (196) is arranged on the outer wall of the guide sleeve (195), the anti-rotation bearing (197) is sleeved on the anti-rotation pin (196), and the anti-rotation bearing (197) and the anti-rotation pin (196) are arranged in the inserting groove (199);
the ball screw (115) rotates to enable the ball screw nut (116) to move upwards or downwards, and then the guide sleeve (195) is driven to move up and down.
5. An in situ mechanical loading device for industrial CT as described in claim 4 wherein said lower clamp assembly (4) includes a force sensor (125), a lower clamp (202), a lower compression plate (203) and an adapter rod (201);
the force sensor (125) is installed on the guide sleeve (195) through a screw, the switching rod (201) is installed at the top of the force sensor (125), the lower clamp (202) is installed at the top of the switching rod (201), and the lower pressing sheet (203) is detachably fixed on the lower clamp (202) through the screw.
6. An in situ mechanical loading device for industrial CT as described in any of claims 4-5 wherein said servo motor (149) is mounted with a motor encoder (150).
7. An in-situ mechanical loading device for industrial CT as in claim 5 wherein the bottom of said adapter rod (201) is provided with a threaded mounting groove (124) and the top of said force sensor (125) is threadedly secured in said threaded mounting groove (124).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321215845.3U CN220063692U (en) | 2023-05-19 | 2023-05-19 | In-situ mechanical loading device for industrial CT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321215845.3U CN220063692U (en) | 2023-05-19 | 2023-05-19 | In-situ mechanical loading device for industrial CT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220063692U true CN220063692U (en) | 2023-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321215845.3U Active CN220063692U (en) | 2023-05-19 | 2023-05-19 | In-situ mechanical loading device for industrial CT |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220063692U (en) |
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2023
- 2023-05-19 CN CN202321215845.3U patent/CN220063692U/en active Active
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