CN215909789U - High-precision spherical height gauge - Google Patents
High-precision spherical height gauge Download PDFInfo
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- CN215909789U CN215909789U CN202121958721.5U CN202121958721U CN215909789U CN 215909789 U CN215909789 U CN 215909789U CN 202121958721 U CN202121958721 U CN 202121958721U CN 215909789 U CN215909789 U CN 215909789U
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Abstract
The utility model discloses a high-precision spherical height gauge which comprises a base, a gauge stand, a dial indicator and a measuring device, wherein the gauge stand is arranged on the upper end surface of the base and is rigidly connected with the base; the dial gauge rod penetrates through the through hole on one side of the gauge stand and is rigidly connected with the gauge stand, so that the axial position of the dial gauge and the measuring device is relatively stable and firm; the measuring device penetrates through the through hole in one side of the base and is in clearance fit with the through hole in one side of the base, the measuring columns with different lengths can be replaced according to the actual heights of different measured parts, and the inspection range of the inspection device is enlarged. The gauge disclosed by the utility model ensures the measurement accuracy, has a simple structure, is convenient to apply, is suitable for mass production, and solves the technical problems of large measurement error, high waste frequency, low efficiency and the like in the prior art.
Description
Technical Field
The utility model belongs to the technical field of measuring devices and relates to a high-precision spherical height gauge.
Background
In the machining process of the measuring and detecting tool, some special high-precision detection requirements are often met. For example, after a steel ball roller in the digital gear span gauge is assembled with a small support, the height deviation from the top end of the steel ball roller to the bottom surface of the small support is required to be not more than 0.005mm, otherwise, the detection result is influenced by the reference deviation. Because the steel ball roller is spherical, the height dimension after the assembly with the small support adopts the conventional measuring methods such as a height gauge, an outside micrometer, a micrometer and the like, the defects of the measuring tool such as precision limitation, difficulty in detecting the highest point of the spherical shape of the steel ball roller and the like exist, the error of the measuring result is large, and waste products are caused; moreover, the conventional measurement method has high requirements on professional quality of measurement personnel, the field measurement needs multiple times of multi-point measurement to obtain a more accurate result, and the measurement efficiency is very low.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems in the prior art and provides a high-precision spherical height gauge.
In order to achieve the purpose, the utility model adopts the following technical scheme to realize the purpose:
a high-precision spherical height gauge comprises a base, a gauge stand, a dial indicator and a measuring device;
the gauge stand is arranged on the upper end face of the base and is rigidly connected with the base, and corresponding through holes are respectively arranged at the coaxial positions of the gauge stand and the base;
the dial gauge rod of the dial gauge penetrates through the through hole on one side of the gauge stand and is rigidly connected with the gauge stand;
the measuring device penetrates through the through hole on one side of the base and is in clearance fit with the through hole on one side of the base.
The utility model is further improved in that:
the measuring device comprises a measuring column and an O-shaped ring for fixing the measuring column, wherein the measuring column penetrates through a through hole on one side of the base and is in clearance fit with the through hole of the base; the O-shaped ring is sleeved on the outer side of the measuring column.
The measuring column consists of an excircle and an end face which are in circular arc transition.
The cylindricity of the measuring column is less than or equal to 0.002mm, and the verticality of the end face and the excircle of the measuring column is less than or equal to 0.002 mm.
The inside of gauge stand one side through-hole installs C type bush, and C type bush is in the outside of amesdial gauge rod.
And the meter seat is provided with a screw hole which is axially vertical to the through hole and is used for installing a butterfly screw for clamping the dial indicator rod on the end surface close to the through hole.
The base and the gauge stand are connected through bolts.
The cylindricity of the base through hole is less than or equal to 0.002 mm.
The base and the gauge stand are L-shaped.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model provides a high-precision spherical height gauge which comprises a base, a gauge stand, a dial gauge and a measuring device, wherein through holes are respectively formed in the same sides of the base and the gauge stand and used for installing the dial gauge and the measuring device; the measuring column is in clearance fit with the through hole of the base, the measuring columns with different lengths can be replaced conveniently according to the actual heights of different measured parts, the inspection range of the inspection device is enlarged, the measurement efficiency is improved, and the inspection device is simple in structure, convenient to use and suitable for mass production.
Furthermore, the measuring device of the checking fixture consists of a measuring column and an O-shaped ring, the measuring column converts the contact between points which are difficult to measure into the contact between points which are easy to measure and surfaces, the highest point of the measured part is ensured to be accurately measured, and the measuring precision and efficiency are improved; the O-shaped ring is sleeved on the outer side of the measuring column to prevent the measuring column from falling off, and meanwhile, the O-shaped ring can adjust the gap between the dial indicator and the upper end face of the measuring column by adjusting the axial position of the measuring column.
Furthermore, the end face and the excircle of the measuring column adopt circular arc transition design, so that a measured part can be pushed in smoothly without clamping stagnation; the cylindricity of the measuring column is less than or equal to 0.002mm, and the verticality between the end face and the excircle is less than or equal to 0.002mm, so that the height precision of the measuring column is ensured; the corresponding through hole on one side of the base is matched with the measuring column in a grinding mode, the cylindricity of the through hole is less than or equal to 0.002mm, the measuring column is guaranteed to be pushed in smoothly, and unsmooth plugging feeling is avoided.
Furthermore, a C-shaped bushing is arranged in a through hole of the dial gauge seat and located on the outer side of the dial gauge rod, meanwhile, a screw hole which is vertical to the axial direction is formed in the side face of the through hole and used for installing a butterfly screw, the C-shaped bushing deforms under the stress of the butterfly screw, the C-shaped opening contracts, the dial gauge can be clamped, and therefore the dial gauge can be located.
Furthermore, the gauge stand and the base are L-shaped, the dial indicator and the measuring device are both positioned at the opening part, the structure is simple, and the measurement is convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a diagram of the calibration state of the present invention;
FIG. 3 is a schematic view of the detection structure of the present invention;
FIG. 4 is a diagram of the detection state of the present invention.
Wherein: 1-a base; 2-bolt; 3-a gauge stand; 4-dial indicator; 5-a thumb screw; 6-C type bush; 7-O-shaped ring; 8-measuring the column; 9-a calibration piece; 10-measured part.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "horizontal", "inner", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience and simplicity, but the indication or suggestion that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the term "horizontal", if present, does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The utility model is described in further detail below with reference to the accompanying drawings:
referring to fig. 1-4, the embodiment of the utility model discloses a high-precision spherical height gauge, which comprises a base 1, a gauge stand 3, a dial indicator 4 and a measuring device, wherein the gauge stand 3 is arranged on the base; the gauge stand 3 is arranged on the upper end face of the base 1 and is rigidly connected with the base 1, and through holes are respectively formed in the same sides of the gauge stand 3 and the base 1, so that the dial gauge 4 and the measuring device are kept in the same axial direction, and the measuring accuracy is ensured; the gauge rod of amesdial 4 runs through the through-hole of gauge stand 3 one side to with 3 rigid connection of gauge stand, guarantee the stability of amesdial 4 installation, reduce error, measuring device runs through the through-hole of base 1 one side, and with base 1 one side through-hole clearance fit, can be according to the actual height of measurand part 10 change not measurement post 8 of length.
The measuring device comprises a measuring column 8 and an O-shaped ring 7 for fixedly clamping the measuring column 8, wherein the measuring column 8 penetrates through a through hole in one side of the base 1 and is in clearance fit with the through hole in the base 1; the O-shaped ring 7 is sleeved on the outer side of the measuring column 8, the axial position of the O-shaped ring 7 relative to the measuring column 8 is adjusted, and the gap between the side head of the dial indicator 4 and the upper end face of the measuring column 8 can be adjusted. The measuring column 8 adopts the excircle and the end face of arc transition, the end face of the measuring column converts the point contact which is difficult to measure into the point contact with the face, and the highest point of the measured part is ensured to be accurately measured. The cylindricity of the measuring column 8 is less than or equal to 0.002mm, and the verticality of the end face and the excircle of the measuring column 8 is less than or equal to 0.002 mm. The inside of the through hole on one side of the dial gauge seat 3 is provided with a C-shaped bushing 6, and the C-shaped bushing 6 is positioned on the outer side of the dial gauge 4 gauge rod. And one side of the through hole of the gauge stand 3 is provided with an axial vertical screw hole for installing a butterfly screw 5 for clamping a gauge rod of the dial gauge 4. The base 1 and the watch base 3 are connected by bolts 2. The base 1 is formed by grinding a measuring column 8 matched with a through hole, and the cylindricity of the through hole is less than or equal to 0.002 mm. The base 1 and the gauge stand 3 are L-shaped.
The working principle of the utility model is as follows:
(1) placing the checking fixture on a platform, wherein the lower end face of the base 1 is in contact with the platform;
(2) according to the nominal size of the part height, the dial indicator 4 is paired with '0' by the calibration piece 9, and the specific operation is as follows:
firstly, the calibration piece 9 is placed at the lower end of the measuring column 8;
secondly, the pressure of the measuring head of the dial indicator 4 relative to the upper end face of the measuring column 8 is adjusted, the pointer is rotated to be not more than 0.03mm (the value is larger than the deviation amount of the measured dimension and is not too large, the situation that the pointer does too much invalid movement to influence the measuring precision is avoided), the butterfly screw 5 is screwed, and the dial indicator 4 is paired with 0.
Then, the calibrating piece 9 is removed, the axial position of the O-shaped ring 7 relative to the measuring column 8 is adjusted, and a certain gap is formed between the upper end surface of the measuring column 8 and a measuring head of the dial indicator 4 and is not larger than 1 mm.
During measurement, the part 10 to be measured is slightly pushed to the lower end of the measuring column 8, so that the top point of the spherical surface of the part 10 to be measured is in full contact with the lower end surface of the measuring column 8, the pointer of the dial indicator 4 rotates, the part is qualified within a tolerance range, and the part is not qualified.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A high-precision spherical height gauge is characterized by comprising a base (1), a gauge stand (3), a dial indicator (4) and a measuring device;
the gauge stand (3) is arranged on the upper end face of the base (1) and is rigidly connected with the base (1), and corresponding through holes are respectively arranged at the coaxial positions of the gauge stand (3) and the base (1);
the gauge rod of the dial gauge (4) penetrates through the through hole on one side of the gauge stand (3) and is rigidly connected with the gauge stand (3);
the measuring device penetrates through the through hole on one side of the base (1) and is in clearance fit with the through hole on one side of the base (1).
2. The high-precision spherical height gauge according to claim 1, wherein the measuring device comprises a measuring column (8) and an O-ring (7) for fixing the measuring column (8), wherein the measuring column (8) penetrates through a through hole on one side of the base (1) and is in clearance fit with the through hole of the base (1); the O-shaped ring (7) is sleeved on the outer side of the measuring column (8).
3. A high accuracy sphere height gauge according to claim 2, characterized in that said measuring column (8) is composed of circular arc transition outer circle and end surface.
4. A high-precision spherical height gauge according to claim 3, wherein the cylindricity of the measuring column (8) is less than or equal to 0.002mm, and the perpendicularity of the end face and the outer circle of the measuring column (8) is less than or equal to 0.002 mm.
5. The high-precision spherical height gauge according to claim 1, wherein a C-shaped bushing (6) is installed inside a through hole on one side of the gauge stand (3), and the C-shaped bushing (6) is sleeved on the outer side of a gauge rod of the dial gauge (4).
6. The high-precision spherical height gauge according to claim 5, wherein a screw hole which is axially perpendicular to the through hole is formed in the end surface of the gauge stand (3) close to the through hole and used for installing a thumb screw (5) for clamping a gauge rod of the dial gauge (4).
7. The high-precision spherical height gauge according to claim 1, wherein the base (1) and the gauge stand (3) are connected through a bolt (2).
8. The high-precision spherical height gauge according to claim 1, wherein the cylindricity of the through hole of the base (1) is less than or equal to 0.002 mm.
9. The high-precision spherical height gauge according to any one of claims 1 to 8, wherein the base (1) and the gauge stand (3) are L-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121958721.5U CN215909789U (en) | 2021-08-19 | 2021-08-19 | High-precision spherical height gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121958721.5U CN215909789U (en) | 2021-08-19 | 2021-08-19 | High-precision spherical height gauge |
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| Publication Number | Publication Date |
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| CN215909789U true CN215909789U (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121958721.5U Active CN215909789U (en) | 2021-08-19 | 2021-08-19 | High-precision spherical height gauge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117739777A (en) * | 2024-02-21 | 2024-03-22 | 成都航利航空科技有限责任公司 | Quick measurement device and measurement method for aeroengine honeycomb assembly |
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2021
- 2021-08-19 CN CN202121958721.5U patent/CN215909789U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117739777A (en) * | 2024-02-21 | 2024-03-22 | 成都航利航空科技有限责任公司 | Quick measurement device and measurement method for aeroengine honeycomb assembly |
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