CN202083296U - Micrometer for measuring external diameter of breakable member - Google Patents
Micrometer for measuring external diameter of breakable member Download PDFInfo
- Publication number
- CN202083296U CN202083296U CN2011202014797U CN201120201479U CN202083296U CN 202083296 U CN202083296 U CN 202083296U CN 2011202014797 U CN2011202014797 U CN 2011202014797U CN 201120201479 U CN201120201479 U CN 201120201479U CN 202083296 U CN202083296 U CN 202083296U
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- China
- Prior art keywords
- measuring
- external diameter
- gauge head
- breakable member
- contact chip
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- Expired - Fee Related
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
A micrometer for measuring the external diameter of a breakable member comprises an arc-shaped meter support and measuring heads arranged on two ends of the arc-shaped meter support. Each measuring head is provided with a contact sheet, wherein the surface area of the contact sheet is greater than that of the cylinder of each measuring head. Each contact sheet is circular and is concentric with the cylinder of each measuring head. The adoption of the contact sheets enables the contact area between the measuring heads and an object to be increased, prevents pressure of the measuring heads from damaging a to-be-measured object, and enables the accommodating space formed between the two measuring heads for the object to be enlarged, thereby improving the measuring precision for a heterotype object. The micrometer for measuring the external diameter of a breakable member can serve as a standard external diameter micrometer, and is especially suitable for measuring the powder metallurgy pressed compact of an intermediate product formed during powder metallurgy production and other production.
Description
Technical field
The utility model relates to a kind of survey instrument, relates in particular to a kind of measurement breakable member external diameter milscale.
Background technology
At external diameter to article, when highly measuring, milscale is its common tool, in the prior art, milscale generally is to contact with the outside surface of article by gauge head to obtain data, in measuring process, gauge head unavoidably will apply certain pressure to article surface, article surface pressure size is relevant with the contact area size of gauge head and article surface, and for the measurement of breakable member, should avoid of the damage of gauge head institute applied pressure to article as far as possible, especially for article in irregular shape, because of the contact area of outside surface and gauge head may be very little, and its gauge head size of the milscale of standard shape is generally less, the contact area of itself and article surface is less, and formed containing space to article is less relatively between two gauge heads, be used for accurately measuring the external diameter of special-shaped article, height etc., there is the very big problem of resultant error, " H " article shown in figure one, as adopt the nominal outer diameter milscale can't measure its height or the resultant error measured very big, especially for this breakable member of powder metallurgy pressed compact, its measuring operation has been proposed very high requirement, require operating personnel when measuring, to make every effort to steady, gauge head is contacted gently with article, just be unlikely to damage product, on the other hand, because the gauge head diameter dimension of nominal outer diameter milscale only is Φ 6.5mm, the insufficient space that forms between two gauge heads can't place on the gauge head article to contain article reposefully, can't finish measurement.
Summary of the invention
The purpose of this utility model is to provide a kind of measurement breakable member external diameter milscale, and it can make measures accurately, and can avoid measuring the damage to article.
A kind of measurement breakable member external diameter milscale comprises arc chi frame and the gauge head that is arranged at arc chi frame two ends, and described gauge head is provided with the contact chip of surface area greater than the gauge head cylinder.
As to further improvement of the utility model, described contact chip is circular, is provided with the gauge head cylinder is concentric.
As to further improvement of the utility model, the ratio of described contact chip external diameter and gauge head column diameter is 3:1 ~ 5:1.
As to further improvement of the utility model, described contact chip is to be made by Hardmetal materials.
As to further improvement of the utility model, the diameter of described contact chip is 20-30mm, and thickness is 3-5 mm.
The utility model can increase the contact area of gauge head and article owing to be provided with contact chip, avoids gauge head pressure to damage tested article, also makes formed containing space increasing to article between two gauge heads, can improve the measuring accuracy of special-shaped article.
The utility model can be used as the nominal outer diameter milscale and uses, and is particularly useful for the measurement of formed intermediate product powder metallurgy pressed compact in the production run such as powder metallurgy.
Description of drawings
Below in conjunction with accompanying drawing the utility model is made further supplementary notes.
Fig. 1 is tested article structural representation;
Fig. 2 is the structural representation of milscale in the prior art;
Fig. 3 is a structural representation of the present utility model.
Among the figure: 1, arc chi frame, 201, go up gauge head, 202, gauge head down, 301, go up contact chip, 302, contact chip down, 4, control device.
Embodiment
Embodiment 1
A kind of measurement breakable member external diameter milscale, as shown in Figure 3, comprise arc chi frame 1 and the gauge head that is arranged at arc chi frame 1 two ends, gauge head comprises the following gauge head 202 that is fixed on 1 one end points of arc chi frame, by control device 4 controls that are arranged on arc chi frame 1 another end points, can be with respect to the last gauge head 201 that descends gauge head 202 to relatively move, last gauge head 201 and following gauge head 202 all are that diameter is the right cylinder of 6.5mm, last gauge head 201 lower ends are provided with and are fixed with contact chip 301 with one heart, be provided with and be fixed with down contact chip 302 on the following gauge head 201 with one heart, last contact chip 301 and following contact chip 302 all are disks of being made by Hardmetal materials, the diameter of disk is 20mm, thickness is 3 mm, it is consistent with the outside dimension of following contact chip 302 to guarantee to go up contact chip 301 in the process, the concentricity of gauge head cylinder and contact chip, flatness meets the requirement of concerned countries standard.
Embodiment 2
A kind of measurement breakable member external diameter milscale, as shown in Figure 3, comprise arc chi frame 1 and the gauge head that is arranged at arc chi frame 1 two ends, gauge head comprises the following gauge head 202 that is fixed on 1 one end points of arc chi frame, by control device 4 controls that are arranged on arc chi frame 1 another end points, can be with respect to the last gauge head 201 that descends gauge head 202 to relatively move, last gauge head 201 and following gauge head 202 all are that diameter is the right cylinder of 6.5mm, last gauge head 201 lower ends are provided with and are fixed with contact chip 301 with one heart, be provided with and be fixed with down contact chip 302 on the following gauge head 201 with one heart, last contact chip 301 and following contact chip 302 all are disks of being made by Hardmetal materials, the diameter of disk is 30mm, thickness is 5 mm, it is consistent with the outside dimension of following contact chip 302 to guarantee to go up contact chip 301 in the process, the concentricity of gauge head cylinder and contact chip, flatness meets the requirement of concerned countries standard.
Claims (5)
1. measure breakable member external diameter milscale for one kind, comprise arc chi frame and the gauge head that is arranged at arc chi frame two ends, it is characterized in that: described gauge head is provided with the contact chip of surface area greater than the gauge head cylinder.
2. measurement breakable member external diameter milscale according to claim 1 is characterized in that: described contact chip is provided with the gauge head cylinder is concentric for circular.
3. measurement breakable member external diameter milscale according to claim 2, it is characterized in that: the ratio of the diameter of described contact chip external diameter and gauge head cylinder is 3:1 ~ 5:1.
4. measurement breakable member external diameter milscale according to claim 1, it is characterized in that: described contact chip is to be made by Hardmetal materials.
5. measurement breakable member external diameter milscale according to claim 1, it is characterized in that: the diameter of described contact chip is 20-30mm, thickness is 3-5 mm
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202014797U CN202083296U (en) | 2011-06-15 | 2011-06-15 | Micrometer for measuring external diameter of breakable member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202014797U CN202083296U (en) | 2011-06-15 | 2011-06-15 | Micrometer for measuring external diameter of breakable member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202083296U true CN202083296U (en) | 2011-12-21 |
Family
ID=45343922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202014797U Expired - Fee Related CN202083296U (en) | 2011-06-15 | 2011-06-15 | Micrometer for measuring external diameter of breakable member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202083296U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162591A (en) * | 2013-03-12 | 2013-06-19 | 徐州工业职业技术学院 | Tooth thickness micrometer and method measuring gear tooth thickness |
| CN105157500A (en) * | 2015-04-30 | 2015-12-16 | 北京航天控制仪器研究所 | Gyroscope frame part high-precision online measuring device and method |
-
2011
- 2011-06-15 CN CN2011202014797U patent/CN202083296U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162591A (en) * | 2013-03-12 | 2013-06-19 | 徐州工业职业技术学院 | Tooth thickness micrometer and method measuring gear tooth thickness |
| CN103162591B (en) * | 2013-03-12 | 2016-04-06 | 徐州工业职业技术学院 | A kind of method of gear tooth micrometer and prototype gear gear teeth transverse tooth thickness |
| CN105157500A (en) * | 2015-04-30 | 2015-12-16 | 北京航天控制仪器研究所 | Gyroscope frame part high-precision online measuring device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111221 Termination date: 20170615 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |