CN211346752U - High-precision center distance calibration test device for linear moving bent arm - Google Patents
High-precision center distance calibration test device for linear moving bent arm Download PDFInfo
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- CN211346752U CN211346752U CN202020380676.9U CN202020380676U CN211346752U CN 211346752 U CN211346752 U CN 211346752U CN 202020380676 U CN202020380676 U CN 202020380676U CN 211346752 U CN211346752 U CN 211346752U
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Abstract
The utility model discloses a high-precision center distance calibration test device for a linear moving bent arm, which comprises a base, a base connected with the upper end surface of the base, and a clamping device arranged on the side wall of the hollow cavity of the base, wherein the base has an open frame structure at the upper end and any side wall; the clamping device comprises a fixed structure and a movable structure, wherein the fixed structure is provided with an image detection device, and the movable structure and the fixed structure move relatively to each other to clamp and position the fixed shaft of the bending arm, so that the image detection device can calibrate the center distance between the head of the bending arm and the center line of the fixed shaft. The test device only needs one-time clamping, and the positions of the central point of the fixed shaft and the center of the bent arm relative to the same calibration reference are respectively detected through different high-precision measuring devices, so that the high-precision measuring result of the center distance is obtained finally.
Description
Technical Field
The utility model belongs to the technical field of precision machinery and measurement, especially, relate to a center distance calibration test device of high accuracy rectilinear movement curved boom.
Background
The fluid machinery equipment rotating at high speed mainly comprises a rotating drum rotating at high speed and a fixed shaft. When the rotating drum rotates at high speed, the fluid is mainly concentrated on the side wall of the rotating drum and is distributed in layers, and the distribution density of the fluid is higher closer to the side wall of the rotating drum. The fixed shaft is provided with a bent arm perpendicular to the axis direction, and the bent arm is mainly used for adjusting the distribution condition of the flow field in the rotary drum. The center distance of the bent arm head from the fixed axis has obvious influence on the mechanical performance of the fluid mechanical equipment, and is an important parameter related to the overall performance of the fluid mechanical equipment. Because the structural parameters of the head of the bent arm are small, the position of the central point of the head of the bent arm is difficult to measure by adopting a conventional detection method, and the measurement of the central distance of the bent arm can be carried out only by adopting an image detection method. However, due to the limitation of the measurement stroke of the image detection equipment, it is difficult to measure the positions of the axis of the fixed shaft and the center point of the head of the curved arm by using the image detection equipment, so the measurement of the center distance of the curved arm is always a difficult point of fluid mechanical inspection. In order to further optimize the overall performance of the mechanical equipment, the center distance of the bent arm can be made into an adjustable structure. Based on the requirements of improving the precision of the equipment and the production efficiency, the center distance of the bent arm needs to be calibrated with higher precision. The calibration test device for the center distance of the bent arm needs to meet the requirements of high precision and simple and convenient operation.
The detection device of the center distance of the bent arm of the high-speed rotating fluid machine in the prior art mainly has the technical defects that: in the prior art, the position of the central point of the fixed shaft of the high-speed rotating fluid machine is determined by measuring the gauge blocks with the same cylindrical structure by an image method, then the fixed shaft with the bent arm is replaced to perform image measurement aiming at the position of the center of the head of the bent arm, and finally the center distance of the head of the bent arm is determined. Because the measuring block and the fixed shaft of the cylindrical structure have uncertainty of processing errors, the measurement can only consider that the center of the cylindrical measuring block is coincided with the center of the fixed shaft, so that the method has certain errors in the measurement principle, the measurement errors are increased due to frequent assembly and disassembly, and the operation is complicated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a center-to-center distance calibration test device of high accuracy linear movement curved boom to solve the problem of background art.
In order to achieve the above object, the utility model discloses a test device is markd to centre-to-centre spacing of high accuracy rectilinear movement curved boom's concrete technical scheme as follows:
a high-precision center distance calibration test device for a linear moving bent arm comprises a base, a base connected with the upper end surface of the base, and a clamping device arranged on the side wall of a hollow cavity of the base, wherein the base is of a frame structure with openings at the upper end and any one side wall;
the clamping device comprises a fixed structure and a movable structure, a calibration reference is mounted on the fixed structure, the movable structure and the fixed structure move relatively to each other to clamp and position the fixed shaft with the bent arm, the positions of the center point of the fixed shaft and the center of the bent arm relative to the same calibration reference are detected through different high-precision measuring equipment, and finally a high-precision measuring result of the center distance is obtained.
Furthermore, a fixing structure in the clamping device is a fixed special-shaped positioning block, and two ends of the fixed special-shaped positioning block are detachably connected to the side wall of the hollow cavity of the base.
Further, the movable structure in the clamping device comprises: the adjustable special-shaped positioning block is slidably arranged between the fixed special-shaped positioning block and the side wall of the base, and the self-locking type telescopic adjusting device is connected with the adjustable special-shaped positioning block.
Furthermore, the self-locking type telescopic adjusting device is a screw rod, the screw rod is in threaded connection with the base, one end of the screw rod penetrates out of the base, and the other end of the screw rod is rotatably connected to the side wall of the adjustable special-shaped positioning block.
Further, the movable structure in the clamping device further comprises: the guide mechanism is connected with the side wall of the adjustable special-shaped positioning block, and the guide structure ensures that the adjustable special-shaped positioning block does not deflect when moving relative to the fixed special-shaped positioning block.
Furthermore, the guide structure is a guide rod, one end of the guide rod is fixed on the side wall of the adjustable special-shaped positioning block, and the other end of the guide rod is inserted into a through hole formed in the fixed special-shaped positioning block in a sliding mode.
Further, guide structure includes the slider and sets up the bar spout on the base inner chamber lateral wall, slider fixed connection in the both ends of adjustable dysmorphism locating piece, and slider sliding connection realizes the direction in the bar spout.
Furthermore, V-shaped grooves are formed in opposite side walls between the fixed special-shaped positioning blocks and the adjustable special-shaped positioning blocks, and the fixed shaft is clamped in the V-shaped grooves through the matched relative motion of the fixed special-shaped positioning blocks and the adjustable special-shaped positioning blocks.
Further, the base is of a rectangular frame structure.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model aims to provide a simple structure, convenient operation and the higher curved boom centre-to-centre spacing calibration test device of precision to the detection problem of the high-speed rotatory fluid machinery curved boom centre-to-centre spacing. The test device only needs one-time clamping, and the positions of the central point of the fixed shaft and the center of the bent arm relative to the same calibration reference are respectively detected through different high-precision measuring devices, so that the high-precision measuring result of the center distance is obtained finally. The testing device can effectively avoid the influence on the measuring result caused by machining error and frequent assembly and disassembly, can be used for calibrating the structure with the adjustable center distance of the bent arm, and has the advantages of simple structure, convenient operation and higher precision.
Drawings
FIG. 1 is a schematic view of the structure of the fixing shaft with a bent arm of the present invention;
fig. 2 is a top view of fig. 1.
The reference numbers in the figures illustrate: the device comprises a base 1, a hollow cavity 11, a calibration standard 2, a fixed special-shaped positioning block 3, an adjustable special-shaped positioning block 4, a fixed shaft 5, a bent arm 6, a screw 7 and a guide rod 8.
Detailed Description
For a better understanding of the objects, structure and function of the invention, reference should be made to the drawings, FIGS. 1-2, which are included to illustrate the invention.
As shown in the figure, a high-precision center distance calibration test device for a linear moving bent arm is designed, and comprises a base, a base 1 connected with the upper end surface of the base, and a clamping device arranged on the side wall of a hollow cavity 11 of the base 1, wherein the base 1 is a frame structure with openings at the upper end and any side wall; the base 1 has a rectangular frame structure.
The clamping device comprises a fixed structure and a movable structure, wherein the fixed structure is provided with a calibration reference 2, and the movable structure and the fixed structure move relatively to clamp and position a fixed shaft 5 with a bent arm 6; v-shaped grooves are formed in opposite side walls between the fixed special-shaped positioning blocks 3 and the adjustable special-shaped positioning blocks 4, and the fixed shaft 5 is clamped in the V-shaped grooves through the matching relative motion of the fixed special-shaped positioning blocks 3 and the adjustable special-shaped positioning blocks 4.
The base mainly provides stable support to whole test device, and the bottom surface of base needs to have better plane degree, has cavity 11 on the base, can be used to the detection of image detection equipment to 6 heads of curved boom. The fixed special-shaped positioning block 3 is fixed on the base, and the special-shaped surface of the fixed special-shaped positioning block needs to keep higher verticality with the bottom surface of the base so as to ensure that the axis of the fixed shaft 5 after positioning has higher verticality with the bottom surface. The adjustable special-shaped positioning block 4 is connected with the fixed special-shaped positioning block 3 through a screw 7 and is mainly used for locking the fixed pipe on the fixed special-shaped positioning block 3. The calibration reference 2 is located on the base at a position convenient for detection by various high-precision equipment and is used for forming the characteristics of the calibration reference 2.
The fixing structure is a fixed special-shaped positioning block 3, and two ends of the fixed special-shaped positioning block 3 are detachably connected to the side wall of the hollow cavity 11 of the base 1.
The movable structure includes: the adjustable special-shaped positioning block 4 is slidably arranged between the fixed special-shaped positioning block 3 and the side wall of the base 1, and the self-locking type telescopic adjusting device is connected with the adjustable special-shaped positioning block 4. Further, the self-locking type telescopic adjusting device is a screw rod 7, the screw rod 7 is in threaded connection with the base 1, one end of the screw rod 7 penetrates out of the base 1, and the other end of the screw rod 7 is rotatably connected to the side wall of the adjustable special-shaped positioning block 4.
Further preferably, the movable structure further comprises: the guide mechanism is connected with the side wall of the adjustable special-shaped positioning block 4, and the guide mechanism is arranged to ensure that the adjustable special-shaped positioning block 4 does not deflect when moving relative to the fixed special-shaped positioning block 3. Wherein, the guide structure is guide bar 8, and the one end of guide bar 8 is fixed on the adjustable dysmorphism locating piece 4 lateral wall, and the other end of guide bar 8 slides and inserts in the through-hole of seting up on the fixed dysmorphism locating piece 3. Or, guide structure includes the slider and sets up the bar spout on 1 inner chamber lateral wall of base, slider fixed connection in the both ends of adjustable dysmorphism locating piece 4, and slider sliding connection realizes the direction in the bar spout. When adjustable dysmorphism locating piece 4 moves for fixed dysmorphism locating piece 3, but parallel translation because guide structure's setting, can not incline when adjustable dysmorphism locating piece 4 moves to it is more accurate to press from both sides tight fixed axle 5.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.
Claims (9)
1. The utility model provides a center distance calibration test device of high accuracy rectilinear movement curved boom which characterized in that: the clamping device comprises a base, a base (1) connected with the upper end surface of the base and a clamping device arranged on the side wall of a hollow cavity (11) of the base (1), wherein the base (1) is of a frame structure with an opening at the upper end and any side wall;
the clamping device comprises a fixed structure and a movable structure, a calibration reference (2) is mounted on the fixed structure, the movable structure and the fixed structure move relatively to each other to clamp and position a fixed shaft (5) with a bent arm (6), the positions of the center point of the fixed shaft (5) and the center of the bent arm (6) relative to the same calibration reference (2) are detected through different high-precision measuring devices, and finally a high-precision measuring result of the center distance is obtained.
2. The testing device for calibrating the center distance of the high-precision linear moving curved arm according to claim 1, wherein the fixing structure in the clamping device is a fixed special-shaped positioning block (3), and two ends of the fixed special-shaped positioning block (3) are detachably connected to the side wall of the hollow cavity (11) of the base (1).
3. The device for calibrating and testing the center distance of the high-precision linear moving curved arm according to claim 2, wherein the movable structure in the clamping device comprises: the adjustable special-shaped positioning block (4) is slidably arranged between the fixed special-shaped positioning block (3) and the side wall of the base (1), and the self-locking type telescopic adjusting device is connected with the adjustable special-shaped positioning block (4).
4. The testing device for calibrating the center distance of the high-precision linear moving curved arm according to claim 3, wherein the self-locking type telescopic adjusting device is a screw rod (7), the screw rod (7) is in threaded connection with the base (1), one end of the screw rod (7) penetrates out of the base (1), and the other end of the screw rod (7) is rotatably connected to the side wall of the adjustable special-shaped positioning block (4).
5. The device for calibrating and testing the center distance of the high-precision linear moving curved arm according to claim 3, wherein the movable structure in the clamping device further comprises: the guide mechanism is connected with the side wall of the adjustable special-shaped positioning block (4), and the guide structure is arranged to ensure that the adjustable special-shaped positioning block (4) does not deflect when moving relative to the fixed special-shaped positioning block (3).
6. The device for calibrating and testing the center distance of the high-precision linear moving curved arm according to claim 5, wherein the guide structure is a guide rod (8), one end of the guide rod (8) is fixed on the side wall of the adjustable special-shaped positioning block (4), and the other end of the guide rod (8) is slidably inserted into a through hole formed in the fixed special-shaped positioning block (3).
7. The device for calibrating and testing the center distance of the high-precision linear moving curved arm according to claim 5, wherein the guide structure comprises a sliding block and a strip-shaped sliding groove formed in the side wall of the inner cavity of the base (1), the sliding block is fixedly connected to two ends of the adjustable special-shaped positioning block (4), and the sliding block is slidably connected in the strip-shaped sliding groove to realize guiding.
8. The center distance calibration test device of the high-precision linear moving curved arm according to claim 7, wherein V-shaped grooves are formed in opposite side walls between the fixed special-shaped positioning block (3) and the adjustable special-shaped positioning block (4), and the fixed shaft (5) is clamped in the V-shaped grooves through the matching relative motion of the fixed special-shaped positioning block (3) and the adjustable special-shaped positioning block (4).
9. The high-precision straight-line moving bent arm center distance calibration test device according to any one of claims 1 to 8, characterized in that the base (1) is of a rectangular frame structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020380676.9U CN211346752U (en) | 2020-03-24 | 2020-03-24 | High-precision center distance calibration test device for linear moving bent arm |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020380676.9U CN211346752U (en) | 2020-03-24 | 2020-03-24 | High-precision center distance calibration test device for linear moving bent arm |
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| CN211346752U true CN211346752U (en) | 2020-08-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116214409A (en) * | 2023-05-08 | 2023-06-06 | 河北沃德阀业有限公司 | Valve automatic processing frock |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116214409A (en) * | 2023-05-08 | 2023-06-06 | 河北沃德阀业有限公司 | Valve automatic processing frock |
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