CN102865828A - Determination method of special profile part - Google Patents
Determination method of special profile part Download PDFInfo
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- CN102865828A CN102865828A CN2011101848457A CN201110184845A CN102865828A CN 102865828 A CN102865828 A CN 102865828A CN 2011101848457 A CN2011101848457 A CN 2011101848457A CN 201110184845 A CN201110184845 A CN 201110184845A CN 102865828 A CN102865828 A CN 102865828A
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Abstract
The invention relates to a determination method of a special profile part. The determination method comprises the following steps of: (1) drawing a curve or curve cluster close to a profile to be determined by using software capable of correctly drawing the curve of a special profile; (2) amplifying the drawn curve or curve cluster according to a certain multiplying power; outputting the curve or curve cluster on a printer or drawing instrument; manufacturing the curve or curve cluster into a profile template drawing; (3) putting a part to be determined on an objective table of a projector; displaying the projection of the profile to be determined, of the part on a display panel of the projector by regulating the multiplying power and the focusing effect of the projector; (4) spreading the manufactured profile template drawing on the display panel of the projector; finding out a curve closest to the projection of the profile to be determined with best coincidence, wherein parameters used in drawing the curve are the parameters of the profile to be determined; and (5) determining the offset between the projection of the profile of the part and the drawn curve by means of a universal measurement tool so as to determine measurement errors.
Description
Technical field
The present invention relates to a kind of assay method, particularly utilize mapping software, metering projector and the general measurer that accurately to draw the special type surface curve, the method for the special profile parameter of Accurate Determining part.
Background technology
In machine-building, often need to carry out reverse engineer, ready-made part is namely arranged on hand, need to measure according to these parts the parameters such as its shape, size.Measure common linear dimension ratio and be easier to, but want the special profile of Accurate Determining such as involute urve, cycloid, general cycloid etc., just much more difficult, even have no way of doing it.
Summary of the invention
1. the technical matters that will solve
In order to solve above-mentioned mensuration problem with special type surface parts, the invention provides a kind of mapping software, metering projector and general measurer of simply utilizing, the method of the special profile parameter of Accurate Determining part, the method is applicable to the occasion that part to be measured has involute urve, cycloid, general cycloid etc. special profile.
2. summary of the invention
The present invention is achieved in that
1. use any computer drawing software (such as CAXA, AutoCAD, UG etc.) that can accurately draw the special type surface curve, accurately draw out curve or the curve family of several different parameters that approach with profile to be measured;
2. according to actual needs, curve or the curve family of accurately drawing out amplified according to certain multiplying power, and use transparent or semitransparent paper, export at printer or plotting apparatus, be made into a profile template drawing;
3. part to be measured steadily is placed on metering with on the projector objective table, by regulating projector enlargement factor and focusing effect, the projection of part profile to be measured clearly is presented on the projector display panel, at this moment, the multiple that amplifies on projector of part profile to be measured should to amplify the employed enlargement factor of profile template drawing of making consistent with curve or curve family;
4. the profile template drawing of making is tiled on the projector display panel, find with profile projection to be measured the most approaching, i.e. a best curve of registration, the parameter of using when then drawing this curve is the parameter of profile to be measured.
5. by general measurer, can measure the side-play amount between the projection of part profile and the institute's curve plotting, thereby determine measuring error.This error thinks that then the special profile of part has obtained Accurate Determining during less than the measuring error that allows.
As fail to find approaching curve, illustrate that curve or the curve family span drawn out are not right, can adjust parameter, repeat said process, finally can both find the best curve of registration, that is very complicated profile by this way finally can both Accurate Determining out.
3. beneficial effect
The present invention utilizes the computer drawing software that generally uses at present, the metering of generally using in conjunction with machine industry is with projector and general measurer, realized the Accurate Determining of special profile, having solved often needs in the reverse engineer process to solve but insoluble special profile parametric measurement problem.
Embodiment
For the assay method of special profile of the present invention is described better, the existing involute gear that uses with certain type gear-type pump is illustrated as example.Because structural restriction, the parameters such as the modulus of this gear, the number of teeth are given and can not change, and what now need Accurate Determining is its pressure angle, and require the profile of tooth decided and the difference between the actual parts profile of tooth to be not more than 0.03mm.Be different from 20 ° of the involute gear pressure angles that use in the common mechanical drive, also be different from 30 ° of the pressure angles that common involute spline uses, its pressure angle of involute gear that this gear-type pump uses can be in value in larger, the unpredictable scope.The concrete steps of measuring this involute gear pressure angle are as follows:
1. at first use the CAXA mapping software to draw accurately and part equidimension profile of tooth figure: modulus m is 5, and number of teeth z is 9, and pressure angle is from 15.5 °～35 °, the 0.5 ° of drafting in every interval, one rooted tooth shape figure, have 40, be divided into 5～8 groups, every a series of paintings becomes an involute profile bunch.In order to make things convenient for the work of back, every bright its pressure angle actual value of teeth outline sidenote;
2. above-mentioned drawn curve family is amplified to 10 times (to mate with the demonstration multiplying power of intending selecting at projector), with draught machine or printer it is printed at detail paper, make tooth block figure;
3. stable gear to be measured is placed on the projector objective table, and enlargement factor is set to 10 times, regulates focusing on, the projection of the profile to be measured of gear clearly is presented on the projector display panel;
4. the tooth block figure that makes is tiled on the projector display panel, has found at an easy rate a tooth curve best with profile projection registration to be measured, this tooth curve indicates that pressure angle is 32 °.With the difference between the projection of vernier caliper measurement profile of tooth and this tooth curve of drawing out, be 0.2mm apart from maximum, illustrate that maximum error has been not more than 0.02mm, this error has satisfied the measuring accuracy requirement less than the measuring error 0.03mm that allows.Therefore, the Accurate Determining pressure angle that gone out this Involute gear is 32 ° in this way.
Claims (3)
1. the assay method of a special type surface parts is characterized in that, concrete operation step is:
1. use the software that accurately to draw the special type surface curve, draw out the curve or the curve family that approach with profile to be measured;
2. curve or the curve family of drawing out amplified according to certain multiplying power, export at printer or plotting apparatus, be made into a profile template drawing;
3. part to be measured is placed on the projector objective table, by regulating projector enlargement factor and focusing effect, the projection of part profile to be measured clearly is presented on the projector display panel;
4. the profile template drawing of making is tiled on the projector display panel, find with profile projection to be measured the most approaching, i.e. a best curve of registration, the parameter of using when drawing this curve is the parameter of profile to be measured;
5. by general measurer, measure the side-play amount between the projection of part profile and the institute's curve plotting, thereby determine measuring error.
2. the assay method of a kind of special type surface parts according to claim 1 is characterized in that: the multiple that part profile to be measured is amplified on projector should to amplify the employed enlargement factor of profile template drawing of making consistent with curve or curve family.
3. the assay method of a kind of special type surface parts according to claim 1, it is characterized in that: the curve of comparison usefulness or curve family use the computer drawing software (such as CAXA, AutoCAD or UG etc.) that can accurately draw the special type surface curve to draw, and export at transparent or semitransparent paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101848457A CN102865828A (en) | 2011-07-04 | 2011-07-04 | Determination method of special profile part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101848457A CN102865828A (en) | 2011-07-04 | 2011-07-04 | Determination method of special profile part |
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| Publication Number | Publication Date |
|---|---|
| CN102865828A true CN102865828A (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011101848457A Pending CN102865828A (en) | 2011-07-04 | 2011-07-04 | Determination method of special profile part |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207594A (en) * | 2019-05-31 | 2019-09-06 | 杭州美戴科技有限公司 | Customize the quality inspection method and device of glasses |
| CN112846638A (en) * | 2021-01-20 | 2021-05-28 | 广东韶钢松山股份有限公司 | Repairing method of crusher roller teeth |
Citations (5)
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| CN101458072A (en) * | 2009-01-08 | 2009-06-17 | 西安交通大学 | Three-dimensional contour outline measuring set based on multi sensors and measuring method thereof |
| CN101261114B (en) * | 2008-04-13 | 2010-06-16 | 徐春云 | Multi-lens measurement method |
| CN101782374A (en) * | 2010-03-16 | 2010-07-21 | 西安交通大学 | Gear and moulding structure outline measuring method based on template near-field light projection scanning |
| JP2010164377A (en) * | 2009-01-14 | 2010-07-29 | Sony Corp | Surface profile measurement device and surface profile measuring method |
| US7876454B2 (en) * | 2006-12-20 | 2011-01-25 | General Electric Company | Method and system for measurement of a cutting tool |
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2011
- 2011-07-04 CN CN2011101848457A patent/CN102865828A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7876454B2 (en) * | 2006-12-20 | 2011-01-25 | General Electric Company | Method and system for measurement of a cutting tool |
| CN101261114B (en) * | 2008-04-13 | 2010-06-16 | 徐春云 | Multi-lens measurement method |
| CN101458072A (en) * | 2009-01-08 | 2009-06-17 | 西安交通大学 | Three-dimensional contour outline measuring set based on multi sensors and measuring method thereof |
| JP2010164377A (en) * | 2009-01-14 | 2010-07-29 | Sony Corp | Surface profile measurement device and surface profile measuring method |
| CN101782374A (en) * | 2010-03-16 | 2010-07-21 | 西安交通大学 | Gear and moulding structure outline measuring method based on template near-field light projection scanning |
Non-Patent Citations (1)
| Title |
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| 付泽民等: "复杂曲面零件的反求工程和快速原型制造技术", 《设计与研究》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207594A (en) * | 2019-05-31 | 2019-09-06 | 杭州美戴科技有限公司 | Customize the quality inspection method and device of glasses |
| CN112846638A (en) * | 2021-01-20 | 2021-05-28 | 广东韶钢松山股份有限公司 | Repairing method of crusher roller teeth |
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Application publication date: 20130109 |