CN202041177U - Novel mirror and scale group - Google Patents
Novel mirror and scale group Download PDFInfo
- Publication number
- CN202041177U CN202041177U CN2010206260828U CN201020626082U CN202041177U CN 202041177 U CN202041177 U CN 202041177U CN 2010206260828 U CN2010206260828 U CN 2010206260828U CN 201020626082 U CN201020626082 U CN 201020626082U CN 202041177 U CN202041177 U CN 202041177U
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- CN
- China
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- vernier caliper
- caliper
- telescope
- vernier
- plane reflecting
- Prior art date
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- Expired - Fee Related
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- Length Measuring Devices By Optical Means (AREA)
Abstract
A novel mirror and scale group is mainly composed of a plane reflecting mirror, a support platform, a vernier caliper, a telescope, a plane reflecting mirror, an upright, a telescope mounting rack, a vernier caliper mounting rack and a base, wherein the vernier caliper and the telescope are arranged at the two sides of the upright through respective mounting racks respectively; the upright is arranged on the base; the plane reflecting mirrors are arranged on the support platform; a main caliper of the vernier caliper is fixed on the vernier caliper mounting rack; an auxiliary caliper of the vernier caliper is arranged in middle of the main caliper of the vernier caliper; a zero scale line of the auxiliary caliper, the centers of the plane reflecting mirrors and an optical axis of the telescope are positioned at the visual inspection equal altitude position; in the telescope, a transverse line of a crossed wire is aligned to the zero scale line of the auxiliary caliper of the vernier caliper, so that an accurate reading can be directly read from the vernier caliper to be a measured value, the tension is increased or decreased, and multiple measurement is performed so as to calculate the elongation indicator and Young modulus of a steel wire according to the optical lever principle; and since the scale mark of the vernier caliper is higher than that of the ordinary ruler, the measurement precision can be effectively improved.
Description
Affiliated technical field:
The utility model relates to a kind of pulling method optical lever Young modulus measurement mechanism.
Background technology:
It is one of many colleges and universities Fundamental Physics Experiments of offering that the pulling method optical lever is surveyed steel wire Young's modulus of elasticity (Young's modulus of elasticity is a kind of material property specific term), invar silk Young bullet modulus is big, be subjected to the elongation behind the pulling force very small, the method that adopts optical lever to amplify is now measured.This optical lever amplification system often is called as mirror chi group, the used common scale label line of mirror chi group is thicker, and its minimum scale only is 1mm, and this is big with steel wire Young bullet modulus, the experiment condition that stressed back elongation is very small is not in tune, makes whole measuring accuracy not high.
Summary of the invention:
The low problem of measuring accuracy that causes in order to solve pulling method optical lever survey Young's modulus of elasticity Yin Putong scale divisions low precision, the utility model has designed a kind of novel mirror chi group, can overcome the low problem of this measuring accuracy well.
The utility model solves Yin Putong scale divisions low precision and the scheme of the low problem of measuring accuracy that causes is: adopting calibration is that the vernier caliper of 0.02mm replaces that calibration is the common scale of 1mm in original mirror chi group, forms a kind of novel lens chi group.This novel lens chi group is mainly by plane mirror, saddle, vernier caliper, telescope, column, the telescope erecting frame, vernier caliper erecting frame and base constitute, and vernier caliper and telescope are installed in the both sides of column respectively by erecting frame separately, and column is installed on the base, plane mirror places on the saddle, the vernier caliper main scale is fixed on the vernier caliper erecting frame, and the secondary chi of vernier caliper places the middle part of vernier caliper main scale, secondary chi zero graduation line, plane mirror center and telescopical optical axis are in the range estimation isometry position, and all the other are identical with original mirror chi group mounting means.In adjustment process, at first add the heavy counterweight of 2000g so that stretching steel wire, adjusting steel wire active chuck is in and does not have the sassafras state that rubs, earlier from telescope, see vernier caliper clearly by plane mirror, regulate plane mirror or telescopical luffing angle, make the zero graduation line of the secondary chi of " ten " word cross hair horizontal line aligning vernier caliper in the telescope, directly read accurate reading as the starting point of measuring from vernier caliper, 1000g counterweight of every increase, steel wire just has a corresponding elongation, " ten " word cross hair horizontal line in the telescope will move a corresponding distance, regulating the secondary chi of vernier caliper makes its zero graduation move to new " ten " word cross hair horizontal line place, directly read this new reading again from vernier caliper, the difference of these two readings is exactly the variable quantity of the optical lever reading of steel wire elongation correspondence under the effect of 1000g pulling force, just can calculate corresponding steel wire elongation according to optical lever constant and plane mirror to the distance of vernier caliper, and and then calculate the Young's modulus of elasticity of steel wire.
The advantage of this method is that to adopt calibration be that the vernier caliper of 0.02mm replaces that calibration is the common scale of 1mm in original mirror chi group, forms a kind of novel lens chi group, and measuring accuracy is greatly improved.
Description of drawings:
The utility model is described in further detail below in conjunction with accompanying drawing and example
Fig. 1 is a primary structure synoptic diagram of the present utility model.
Fig. 2 is a level crossing system architecture synoptic diagram of the present utility model.
Fig. 3 is that the A of structural representation of the present utility model is to view.
Among the figure, 1, the steel wire active chuck, 2, steel wire, 3, saddle, 4, plane mirror., 5, telescope, 6, vernier caliper erecting frame, 7, column, 8, vernier caliper erecting frame set screw, 9, base, 10, the telescope erecting frame, 11, telescope erecting frame sleeve, 12, vernier caliper gib screw, 13, the vernier caliper main scale, 14, the secondary chi of vernier caliper, 15, vernier caliper erecting frame gib screw, 16, vernier caliper erecting frame sleeve.
Specific embodiments:
In Fig. 1, vernier caliper and telescope (5) are installed in the both sides of column (7) respectively by erecting frame separately, column (7) is installed on the base (10), plane mirror (4) places on the saddle (3), vernier caliper main scale (13) is fixed on the vernier caliper erecting frame (6) by vernier caliper gib screw (12), the secondary chi of vernier caliper (14) places the middle part of vernier caliper main scale (13), secondary chi zero graduation line, plane mirror center and telescopical optical axis are in the range estimation isometry position, and all the other are identical with original mirror chi group mounting means.
Claims (2)
1. novel lens chi group, mainly by plane mirror, saddle, vernier caliper, telescope, column, the telescope erecting frame, vernier caliper erecting frame and base constitute, and it is characterized in that vernier caliper and telescope are installed in the both sides of column respectively by erecting frame separately, column is installed on the base, and plane mirror places on the saddle.
2. novel lens chi group according to claim 1, it is characterized in that the vernier caliper main scale is fixed on the vernier caliper erecting frame, the secondary chi of vernier caliper places the middle part of vernier caliper main scale, secondary chi zero graduation line, and plane mirror center and telescopical optical axis are in the range estimation isometry position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206260828U CN202041177U (en) | 2010-11-26 | 2010-11-26 | Novel mirror and scale group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206260828U CN202041177U (en) | 2010-11-26 | 2010-11-26 | Novel mirror and scale group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202041177U true CN202041177U (en) | 2011-11-16 |
Family
ID=44968616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206260828U Expired - Fee Related CN202041177U (en) | 2010-11-26 | 2010-11-26 | Novel mirror and scale group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202041177U (en) |
-
2010
- 2010-11-26 CN CN2010206260828U patent/CN202041177U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20121126 |