CN218994366U - Horizontal calibration test fixture - Google Patents
Horizontal calibration test fixture Download PDFInfo
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- CN218994366U CN218994366U CN202222277525.2U CN202222277525U CN218994366U CN 218994366 U CN218994366 U CN 218994366U CN 202222277525 U CN202222277525 U CN 202222277525U CN 218994366 U CN218994366 U CN 218994366U
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Abstract
The utility model discloses a horizontal calibration test fixture which is nonmagnetic and comprises a base, a rotating plate for bearing a tested product and a through hole rotating shaft, wherein when the tested product is arranged on the rotating plate, a power line or a signal line of the tested product passes through the through hole passing through the rotating shaft, so that the tested product is prevented from influencing calibration when the rotating plate rotates or is tested; each marked scale is correspondingly provided with a contrast mark with a shape, the rotating plate is correspondingly provided with a mark positioning hole with the same shape as the contrast mark, when the rotating plate rotates to the position that the mark positioning hole is overlapped with the contrast mark, the calibration of a product on the marked scale position is realized, the overlapped state comprises the overlapped state of multiple points and multiple lines, the problem of scale deviation caused by the fact that the scale mark is opposite to the single point at the end part of an arrow in the prior art can be solved, the calibration error caused by the problem in the prior art is effectively solved, and the calibration efficiency and the calibration effect are improved.
Description
Technical Field
The utility model relates to the technical field of test auxiliary tools, in particular to a horizontal calibration test tool.
Background
And (3) calibrating an internal magnetic compass of a finished product after assembly in the production and delivery processes of the aviation display or other devices with the avionic module, acquiring data of the finished product after assembly in the directions of 0 degree, 45 degree, 90 degree, 135 degree, 180 degree, 225 degree, 270 degree and 315 degree in a plane, and performing calibration record. Some tools with metal materials or magnetic materials have larger influence on calibration data, in order to solve the problem, chinese patent document CN210664504U discloses a magnetic compass calibration device which has no magnetism and comprises a detachable connecting seat, a rotatable dial and a scale indicating seat which are sequentially arranged from top to bottom; the detachable connecting seat is detachably fixed on the rotatable dial, and is provided with a first connecting end, and when equipment to be calibrated is connected with the first connecting end, the magnetic compass of the equipment to be calibrated keeps a required pitching angle; the rotatable dial is rotatably held on the scale indication seat, the rotation shaft of the rotatable dial is vertical, the rotatable dial is provided with a second connecting end, and when the equipment to be calibrated is connected to the second connecting end, the magnetic compass of the equipment to be calibrated is horizontal; the scale indication seat is provided with a scale indication part, and the scale indication part is used for reading the scale value of the rotatable dial. In this technical apparatus, the calibration of the magnetic compass is performed after the scale indication part (in the example, the arrow indication) corresponds to the scale on the scale, but when the arrow indication corresponds to the scale, particularly when the manual operation is performed, the correspondence between the arrow indication and the scale is greatly deviated, and the calibration data is inaccurate.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a horizontal calibration test fixture which is nonmagnetic and comprises a base, a rotating plate for bearing a tested product and a through hole rotating shaft; a base through hole is formed in the base, scales which are combined into a circle are formed in the base, and the circle center of the scales is positioned on the central axis of the base through hole; a rotating plate through hole is formed in the rotating plate; each marked scale is correspondingly provided with a comparison mark with a shape, and meanwhile, the rotating plate is correspondingly provided with a mark positioning hole with the same shape as the comparison mark; the through hole rotating shaft is inserted into the rotating plate through hole and the base through hole, so that the rotating plate rotates, and when the rotating plate rotates to the condition that the mark positioning hole is overlapped with the contrast mark, the calibration of the product on the side at the marked scale position is realized.
Further, the control mark and the mark positioning hole are rectangular or square.
Further, the through hole rotating shaft is formed by two connected sections, wherein the diameter of the upper section or the diameter of the circumscribed circle is larger than the diameter of the through hole of the rotating plate.
Further, the rotating plate is also provided with an anti-slip pad.
Further, the rotating plate is made of transparent materials.
Further, the base is also formed with support legs.
Further, the control mark is a slotted hole with a shape, and the cross section of the slotted hole is the same as the cross section of the mark positioning hole in structure; the positioning block is identical to the slotted hole in cross section; when the rotating plate rotates to the position that the mark positioning hole is overlapped with the contrast mark, the positioning block is inserted into the contrast mark through the mark positioning hole, so that the calibration of the product on the side at the marked scale position is realized.
The utility model also provides another horizontal calibration test fixture based on the above, wherein a stepped structure is formed in the through hole of the base, and a bearing is arranged in the stepped structure; the through hole rotation shaft is a straight pipe, a clamping block is formed on the outer wall of the through hole rotation shaft, meanwhile, a clamping groove corresponding to the clamping block is formed on the side wall of the through hole of the rotation plate, the straight pipe penetrates through the through hole of the rotation plate to be installed on the bearing, and the clamping block is clamped with the clamping groove.
Further, a limiting piece is arranged at the upper end part of the straight pipe and used for limiting the rotating plate to be separated.
Further, the rotating plate is also provided with an anti-slip pad; and the rotating plate is made of transparent materials. Further, the base is also formed with support legs.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
(1) The horizontal calibration test fixture provided by the utility model has no magnetism, and comprises a base, a rotating plate for bearing a tested product and a through hole rotating shaft, wherein when the tested product is arranged on the rotating plate, a power line or a signal line of the tested product passes through the through hole passing through the rotating shaft, so that the tested product is prevented from influencing calibration when the rotating plate rotates or is tested; each marked scale is correspondingly provided with a contrast mark with a shape, the rotating plate is correspondingly provided with a mark positioning hole with the same shape as the contrast mark, when the rotating plate rotates to the position that the mark positioning hole is overlapped with the contrast mark, the calibration of a product on the marked scale position is realized, the overlapped state comprises the overlapped state of multiple points and multiple lines, the problem of scale deviation caused by the fact that the scale mark is opposite to the single point at the end part of an arrow in the prior art can be solved, the calibration error caused by the problem in the prior art is effectively solved, and the calibration efficiency and the calibration effect are improved. Furthermore, the comparison mark and the mark positioning hole are rectangular or square, and the shape can realize manual efficiency while realizing accurate positioning during manual operation, so that the problem of overlapping positioning efficiency caused by complex shapes is avoided.
(2) According to the horizontal calibration test fixture, the through hole rotating shaft is divided into two ends, and when the horizontal calibration test fixture is used, the through hole rotating shaft is directly inserted from the upper part of the rotating plate, so that the horizontal calibration test fixture is convenient to install, assemble and disassemble and simple to use. Further, by arranging the anti-slip pad on the rotating plate, the tested product can be stably arranged on the rotating plate, so that the existence of other fixing pieces is reduced, and the slipping phenomenon can be avoided.
(3) According to the horizontal calibration test tool, the comparison mark is a slotted hole with a shape, and the cross section of the slotted hole is the same as the cross section of the mark positioning hole in structure; the positioning block is identical to the slotted hole in cross section, and the rotating plate can be fixed when the mark positioning hole is overlapped with the contrast mark through the positioning block, so that the rotating plate is prevented from rotating, and errors in the calibration process are reduced.
(4) According to the horizontal calibration test tool, a stepped structure is formed in the through hole of the base, and a bearing is arranged in the stepped structure; the through hole rotation shaft is a straight pipe, a clamping block is formed on the outer wall of the through hole rotation shaft, meanwhile, a clamping groove corresponding to the clamping block is formed on the side wall of the through hole of the rotation plate, the straight pipe penetrates through the through hole of the rotation plate to be installed on the bearing, and the clamping block is clamped with the clamping groove. Through this structure, can realize when the rotor plate rotates, drive the through-hole axis of rotation and rotate to with the bearing cooperation, realize frictionless rotation, rotate more stably, make the demarcation result more effective, further reduce the demarcation error.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the horizontal calibration test fixture of embodiment 1 of the present utility model in a disassembled configuration;
FIG. 2 is a schematic structural diagram of a horizontal calibration test fixture according to embodiment 1 of the present utility model;
FIG. 3 is a schematic view of another construction of the through hole of the base of the present utility model;
FIG. 4 is a schematic view of another construction of the through-hole rotation shaft of the present utility model;
FIG. 5 is a schematic view of another construction of the through hole of the rotating plate of the present utility model;
the reference numerals in the drawings are as follows: 1-a base; 2-rotating plates; 3-a through hole rotation shaft; 4-a base through hole; 5-marking a scale; 6-rotating plate through holes; 7-a control label; 8-marking the positioning holes; 9-a non-slip mat; 10-supporting legs; 11-a bearing; 12-clamping blocks; 13-clamping grooves; 14-the product to be tested.
Detailed Description
The following is a clear and complete description of the present utility model, taken in conjunction with the accompanying drawings, and it is evident that the described embodiments are some, but not all, embodiments of the present utility model. Other embodiments of the utility model, which are encompassed by the present utility model, are within the scope of the utility model as would be within the skill of those of ordinary skill in the art without undue burden.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Example 1
As shown in fig. 1 and 2, the embodiment discloses a horizontal calibration test fixture, which adopts materials with non-magnetism, and specifically comprises a base 1, a rotating plate 2 for bearing a tested product 14 and a through hole rotating shaft 3; the structure of the base 1 is not particularly limited, as long as the base 1 can form a plane, a scale mark 5 capable of combining circumferences is formed on the plane, the scale mark 5 is a scale mark to be detected or marked on the tested product 14, generally 0 °, 45 °, 90 °, 135 °, 180 °, 225 °, 270 °, 315 ° 8, a cylindrical base through hole 4 is formed on the base 1, the circle center of the circumference surrounded by the scale mark 5 is located on the central axis of the base through hole 4, and in order to have a corresponding height, the base 1 is further formed with a supporting leg 10, and the structure of the base 1 can be only a supporting leg type in the prior art, can be detachable, can be non-detachable, and is particularly selected according to the needs; the structure of the rotating plate 2 is not particularly limited, and is generally made of a transparent material plate, in this embodiment, the rotating plate 2 is rectangular, and may further be provided with an anti-slip pad 9, and meanwhile, a rotating plate through hole 6 is formed in the rotating plate 2, and is generally formed in a position near one end of the rotating plate 2; in order to better reduce and avoid errors of calibration tests on a certain scale, each calibration mark 5 is correspondingly provided with a comparison mark 7 with a shape, a plurality of comparison marks 7 are symmetrically and uniformly distributed along the circumference, the shape of the comparison mark 7 is preferably at least provided with a combination of points and lines, in this embodiment, a rectangle is preferably adopted, meanwhile, the rotating plate 2 is correspondingly provided with a mark positioning hole 8 with the same shape (cross section) as the comparison mark 7, the structure of the mark positioning hole 8, particularly the structure of the cross section, is preferably consistent with the comparison mark 7, and is particularly rectangular, the through hole rotating shaft 3 is inserted into the rotating plate through hole 6 and the base through hole 4, so that the rotating plate 2 rotates, and when the rotating plate rotates to the end part of the mark positioning hole 8 is coincident with the comparison mark 7, the calibration of a product 14 on the position of the marked scale 5 is realized. The structure of the through-hole rotation shaft 3 is not particularly limited, and in the present embodiment, the through-hole rotation shaft 3 includes two sections connected to each other, wherein the diameter of the upper section or the diameter of the circumscribed circle is larger than the diameter of the rotation plate through-hole 6, and the diameter of the lower section or the diameter of the circumscribed circle is preferably the same as the diameters of the rotation plate through-hole 6 and the ground base through-hole 4.
When the anti-skid device is used, a tested product 14 is placed on an anti-skid pad, a power line or a signal line of the tested product 14 passes through a through hole of the through hole rotating shaft 3, then, for each marked scale 5, the rotating plate 2 is rotated to enable the mark positioning hole 8 to be overlapped with the contrast mark 7 on the base 1, and parameters of the tested product 14 under the marked scale 5 are calibrated.
Example 2
The embodiment discloses a horizontal calibration test fixture, which is a further improvement on the basis of embodiment 1, and is specifically distinguished as follows: the control mark 7 is a slotted hole with a shape, and the cross section of the slotted hole is the same as the cross section of the mark positioning hole 8 in structure; the positioning block (not shown in the figure) with the cross section identical to the cross section of the slotted hole is further included, and specifically, the slotted hole, the marking positioning hole and the positioning hole are cuboid with the same cross section; when the rotating plate 2 rotates to the point that the mark positioning hole 8 is overlapped with the contrast mark 7, the positioning block is inserted into the contrast mark 7 through the mark positioning hole 8, so that the rotating plate 2 is fixed and unstable, and the calibration of the product on the side at the marked scale 5 position is realized in a stable state.
Example 3
As shown in fig. 3-5, this embodiment discloses a horizontal calibration test fixture, which is a further improvement on the basis of embodiment 1, and the specific differences are as follows: a step structure is formed in the base through hole 4, and a bearing 11 is arranged in the step structure; the through hole rotation shaft 3 is a straight pipe, the outer wall of the through hole rotation shaft is provided with a clamping block 12, meanwhile, the side wall of the rotation plate through hole 6 is provided with clamping grooves 13 corresponding to the clamping blocks 12, the straight pipe passes through the rotation plate through hole 6 and is installed on the bearing, the clamping blocks 12 are clamped with the clamping grooves 13, the structures and the number of the clamping blocks 12 and the clamping grooves 13 are not particularly limited, and in the embodiment, 2 symmetrical clamping grooves are preferable.
Further, a limiting member (not shown in the drawings) is provided at the upper end of the straight pipe to limit the detachment of the rotating plate 2, and the structure of the limiting member is not particularly limited, as long as the rotating plate 2 is not detached from the upper end of the straight pipe, specifically, for example, the upper end of the straight pipe is formed with an external thread, and at this time, the limiting member is a nut engaged with the external thread.
Example 4
The embodiment discloses a horizontal calibration test fixture, which is a further improvement on the basis of embodiment 3, and the specific differences are as follows: the control mark 7 is a slotted hole with a shape, and the cross section of the slotted hole is the same as the cross section of the mark positioning hole 8 in structure; the positioning block (not shown in the figure) with the cross section identical to the cross section of the slotted hole is further included, and specifically, the slotted hole, the marking positioning hole and the positioning hole are cuboid with the same cross section; when the rotating plate 2 rotates to the point that the mark positioning hole 8 is overlapped with the contrast mark 7, the positioning block is inserted into the contrast mark 7 through the mark positioning hole 8, so that the rotating plate 2 is fixed and unstable, and the calibration of the product on the side at the marked scale 5 position is realized in a stable state.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (10)
1. The horizontal calibration test fixture is characterized by comprising a nonmagnetic base, a rotating plate for bearing a tested product and a through hole rotating shaft; a base through hole is formed in the base, scales which are combined into a circle are formed in the base, and the circle center of the scales is positioned on the central axis of the base through hole; a rotating plate through hole is formed in the rotating plate; and each marked scale is correspondingly provided with a contrast mark with a shape, and meanwhile, the rotating plate is correspondingly provided with a mark positioning hole with the same shape as the contrast mark.
2. The horizontal calibration test fixture of claim 1, wherein the control mark and the mark positioning hole are rectangular or square.
3. The horizontal calibration test fixture according to claim 1 or 2, wherein the through hole rotating shaft is formed by two connected sections, and the diameter of the upper section or the diameter of the circumscribed circle is larger than the diameter of the through hole of the rotating plate.
4. The horizontal calibration test fixture of claim 3, wherein the rotating plate is further provided with a non-slip mat.
5. The horizontal calibration test fixture of claim 4, wherein the rotating plate is made of a transparent material.
6. The horizontal calibration test fixture of claim 5, wherein the base is further formed with support legs.
7. The horizontal calibration test fixture of claim 6, wherein the control mark is a slot having a shape, the cross section of the slot being the same as the cross section of the mark positioning hole; the positioning block is identical to the slotted hole in cross section.
8. The horizontal calibration test fixture according to claim 1 or 2, wherein a stepped structure is formed in the through hole of the base, and a bearing is installed in the stepped structure; the through hole rotation shaft is a straight pipe, a clamping block is formed on the outer wall of the through hole rotation shaft, meanwhile, a clamping groove corresponding to the clamping block is formed on the side wall of the through hole of the rotation plate, the straight pipe penetrates through the through hole of the rotation plate to be installed on the bearing, and the clamping block is clamped with the clamping groove.
9. The horizontal calibration test fixture of claim 8, wherein the upper end of the straight tube is provided with a limiting member for limiting the turning plate from being disengaged.
10. The horizontal calibration test fixture of claim 9, wherein the rotating plate is further provided with an anti-slip pad; the rotating plate is made of transparent materials; the base is also formed with support legs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222277525.2U CN218994366U (en) | 2022-08-29 | 2022-08-29 | Horizontal calibration test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222277525.2U CN218994366U (en) | 2022-08-29 | 2022-08-29 | Horizontal calibration test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218994366U true CN218994366U (en) | 2023-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222277525.2U Active CN218994366U (en) | 2022-08-29 | 2022-08-29 | Horizontal calibration test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218994366U (en) |
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2022
- 2022-08-29 CN CN202222277525.2U patent/CN218994366U/en active Active
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