CN2156470Y - Excircle instrument - Google Patents
Excircle instrument Download PDFInfo
- Publication number
- CN2156470Y CN2156470Y CN 93227669 CN93227669U CN2156470Y CN 2156470 Y CN2156470 Y CN 2156470Y CN 93227669 CN93227669 CN 93227669 CN 93227669 U CN93227669 U CN 93227669U CN 2156470 Y CN2156470 Y CN 2156470Y
- Authority
- CN
- China
- Prior art keywords
- excircle
- instrument
- measuring
- workpiece
- slide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an excircle instrument, which is composed of a slide ruler, a slide way and a measuring cavity body, wherein, the slide ruler 1 is arranged in the slide way 2; the measuring cavity body 3 is arranged below the slide way 2. A revolving body workpiece is placed in the measuring cavity body; the circular diameter, the sphere diameter and the non-roundness of the revolving body workpiece can be accurately measured. The utility model has the characteristics of feasible, reasonable design, simple structure, low cost, easy fabrication, convenient operation, rapidity, etc. Errors caused by improper clamping and measuring position can not occur. The utility model has high measuring precision, and is the ideal replacing product of calipers, micrometers and clamping plates. The excircle instrument is suitable for measuring various revolving bodies.
Description
The utility model relates to Excircle instrument, particularly detects the general measurer of solid of revolution diameter, out-of-roundness.
At present, existing measurer: slide calliper rule, milscale, clamp and similar various special measuring tool, can detect cylinder diameter and sphere diameter; The bearing detector that measuring accuracy is higher also is the diameter that is used for detecting right cylinder and spheroid, and in these commonly used measurements, clamp is that special-purpose comparison expression is measured, and other are several all can directly to record size, and can be in the hope of its out-of-roundness by multimetering.Taking a broad view of existing various measuring tools, all is the diameter of directly measuring right cylinder and spheroid, because card amount position is improper, occurs error unavoidably, can not satisfy measurement requirement preferably.
The purpose of this utility model provides a kind of Excircle instrument with the survey cavity, determines the measured piece excircle dimension with its geometric configuration, and the improper error that produces when avoiding owing to the operation of use measurer is easy to be easy-to-use, has satisfied measuring accuracy.
The purpose of this utility model realizes by following structure, and it comprises slide rule 1, slideway 2, surveys cavity 3, it is characterized in that slide rule 1 is set in the slideway 2, can have on the slide rule 1 scale or on put the measurement gauge outfit; Slideway is provided with for 2 times surveys cavity 3, surveys cavity 3 and can be triangle, inverted V-shaped, taper, back taper; Can on slide rule 2, add a spring 5 in case of necessity, accelerate slide rule 1 return.
The utility model does not adopt the direct method of measurement, and its ultimate principle is (referring to an accompanying drawing 3):
When radius when to be the circle of R with the both sides of any interior angle tangent,
R=PASin(α/2)/1-Sin(α/2) ］ or
R＝PBSin（α／2）／［1＋Sin（α／2）］
When as long as α angle one regularly records size PA or PB then can try to achieve its radius of circle R.
When selected α=60 °, R=PA=PB/3 then, measure PA and can directly draw the R value this moment.
If want measuring accuracy higher, can select less α angle for use, as select α=2arcsin for use
-11/3, R=PB/4=PA/2 then.
When the measured workpiece diameter hour, can select the method for surveying the PB value for use.
The utility model principle is feasible, reasonable in design, simple in structure, cost is low, makes easily, easy to use, quick, improper and the error that produces in card amount position can not occur, the measuring accuracy height is the desirable substitute products of slide calliper rule, milscale, clamp, be suitable for various solid of revolution and measure, be suitable for penetration and promotion.Its principal feature is:
1. directly do not measure the diameter of circle (or ball), but utilize not 3 principle measurement circles that determine a circle of conllinear, Excircle instrument contacts with 3 of workpiece, calculates radius; Utilize the outer not principle that a bit determines a sphere of coplane of circle and circle, one section circle of spheroid instrument and sphere a bit contacts with circle is outer, calculates radius.
When workpiece be fan-shaped or during the part spheroid, or workpiece is in and installs and the base has only part to expose when putting state, all can realize accurate measurement.
3. when the spheroid instrument uses, to any big or small spheroid, without the centering alignment, quick, easy, precision is high.
4. measuring tool rotates around workpiece, or turning of work piece, all can measure change in size continuously, accurately measures out-of-roundness, and the size that slide calliper rule, milscale can only the discontinuous measurement diverse locations.
To the measuring tool of big workpiece when selecting for use measured angular α big, the size of Excircle instrument and spheroid instrument can than existing measure much smaller.
6. when having spring compression on workpiece, a manual manipulation can be realized when slide rule (or table), also telemeasurement can be realized, when measured workpiece accessibility difference, the most apparent its advantage.
7. to the workpiece of slow rotation, can realize the measurement of not stopping.
The utility model accompanying drawing is a structural representation.Wherein Fig. 1 surveys interposed structure synoptic diagram on the cavity, and Fig. 2 is for surveying cavity underlying structural representation, and Fig. 3 is a principle schematic, and Fig. 4 is that the tapered opening groove is surveyed the cavity body structure synoptic diagram, wherein slide rule 1, slideway 2, survey cavity 3, measured piece 4, spring 5.
Embodiment:
Excircle instrument can be made the measuring tool (referring to accompanying drawing 1,2) of two class citation forms, and Fig. 1 records the PA value, and Fig. 2 records the PB value, and slide rule or clock gauge can be selected for use on demand.Can engrave the datum line and the vernier scale of slide rule on the chi that is connected as a single entity with the workpiece chamber (or table) slide rail, scale length scale on the chi.Be elected to when using α angle, workpiece chamber any, scale can be made in proportion, so that directly read workpiece radius R value.Chi and slide rail outer end can be made into ' slide calliper rule version or be with pit gauge when adopting slide rule, can measure other length dimensions or depth dimensions, also can measure internal orifice dimension, formation multi-usage measurer.When the workpiece chamber is the angle gauge form, can measure cylinder and spheroid, when measuring spheroid, need make the spheroid maximum gauge, Here it is Excircle instrument object staff (table).
The spheroid instrument is (referring to the Fig. 4) that measures the spheroid special use, and its basic structure is identical with Excircle instrument, and just the workpiece chamber is not the angle gauge formula, is the cone type structure, no matter be to survey PA value or PB value, chi (table) all is on the center line in cone workpiece chamber.The workpiece chamber can be orthopyramid or normal cone shape, if adopt orthopyramid shape.The inscribe normal cone cone angle of pressing the workpiece chamber when calculating its radius R calculates and gets final product.Convenient for workpiece turnover workpiece chamber when measuring, do not influence measurement result again, the workpiece chamber needn't make whole awl, can cut one not a half.What the workpiece chamber of spheroid instrument was the easiest is to be made into the four sides right circular cone, and can only make three faces, and another side empty (splitting the shape open slot) gives over to and picks and places workpiece usefulness, and the two sides adjacent with empty face extended one section, and detecting operation is more convenient.
Claims (5)
1, a kind of Excircle instrument comprises slide rule 1, slideway 2, surveys cavity 3, it is characterized in that being provided with in the slideway 2 slide rule 1, and slideway is provided with for 2 times surveys cavity 3.
2, Excircle instrument according to claim 1 is characterized in that surveying cavity 3 and can be triangle, inverted V-shaped, taper, back taper type.
3, Excircle instrument according to claim 1, it is characterized in that can having on the slide rule 1 scale or on put the measurement gauge outfit.
4,, it is characterized in that to be provided with on the slide rule 1 spring 5 according to claim 1 or 3 described Excircle instruments.
5, Excircle instrument according to claim 1 and 2 is characterized in that surveying cavity 3 for splitting the shape open slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93227669 CN2156470Y (en) | 1993-03-24 | 1993-03-24 | Excircle instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93227669 CN2156470Y (en) | 1993-03-24 | 1993-03-24 | Excircle instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2156470Y true CN2156470Y (en) | 1994-02-16 |
Family
ID=33804889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93227669 Expired - Fee Related CN2156470Y (en) | 1993-03-24 | 1993-03-24 | Excircle instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2156470Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781704A (en) * | 2010-03-19 | 2010-07-21 | 上海旗春热处理有限公司 | Process for shaping out-of-round internal gear parts |
| CN109731959A (en) * | 2019-01-14 | 2019-05-10 | 南通理工学院 | A kind of simulation veneer reeling machine based on increases material manufacturing technology |
-
1993
- 1993-03-24 CN CN 93227669 patent/CN2156470Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781704A (en) * | 2010-03-19 | 2010-07-21 | 上海旗春热处理有限公司 | Process for shaping out-of-round internal gear parts |
| CN109731959A (en) * | 2019-01-14 | 2019-05-10 | 南通理工学院 | A kind of simulation veneer reeling machine based on increases material manufacturing technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |