CN105547206A - Workpiece size measurement method - Google Patents
Workpiece size measurement method Download PDFInfo
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- CN105547206A CN105547206A CN201510923897.XA CN201510923897A CN105547206A CN 105547206 A CN105547206 A CN 105547206A CN 201510923897 A CN201510923897 A CN 201510923897A CN 105547206 A CN105547206 A CN 105547206A
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- workpiece
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to a workpiece size measurement method. The method comprises the following steps: a measurement coordinate system is built for the workpiece; and the size of the workpiece is measured with the measurement coordinate system as a base. The step of building the measurement coordinate system for the workpiece comprises the following sub steps: a base straight line is built on the workpiece; according to form and position features on the workpiece, a reference straight line vertically intersected with the base straight line is built on the workpiece; and with the base straight line as an X axis, the reference straight line as a Y axis and the intersection point between the base straight line and the reference straight line as a coordinate origin, and the measurement coordinate system is built. In the workpiece size measurement method of the invention, as the reference straight line is built according to the form and position features on the workpiece, the operation for putting the workpiece straight is simple, automatic straight putting by adopting instrument software is facilitated, and the repeatability is good.
Description
Technical field
The present invention relates to a kind of measuring method, particularly relate to a kind of measuring method of workpiece size.
Background technology
Often need in the industrial production to measure various sizes such as length, width and the grooved position equidimension of workpiece.Need during measuring workpieces first workpiece to be ajusted, and then measure.But, for some workpiece, due to the complicacy of its shape, often cause measuring repeatability to be guaranteed.
Summary of the invention
Based on this, be necessary to provide the measuring method of the workpiece size that a kind of measuring repeatability is good.
A measuring method for workpiece size, comprises the following steps:
For surving coordinate system set up by workpiece, comprise the following steps:
Reference line is set up on workpiece;
On workpiece, the consult straight line intersected vertically with described reference line is set up according to the morpheme feature on workpiece; And
Using described reference line as X-axis, using described consult straight line as Y-axis, using the intersection point of described reference line and described consult straight line as true origin, and then set up surving coordinate system; And
Be that benchmark is measured workpiece size with described surving coordinate.
Wherein in an embodiment, the step setting up reference line on workpiece is set up reference line along the geometric center of workpiece.
Wherein in an embodiment, the step setting up reference line on workpiece is set up reference line along the physical centre of workpiece.
Wherein in an embodiment, the step setting up reference line on workpiece is set up reference line along edge the longest on workpiece.
Wherein in an embodiment, described morpheme is characterized as point, line, circle or circular arc.
Wherein in an embodiment, when described morpheme is characterized as, described consult straight line is by described point.
Wherein in an embodiment, when described morpheme is characterized as bowlder, described consult straight line is by the center of circle of described circle.
Wherein in an embodiment, when described morpheme is characterized as circular arc, described consult straight line is by the center of circle of described circular arc.
Wherein in an embodiment, the step setting up reference line on workpiece is: by the circle center line connecting of two circles on workpiece, set up reference line;
Set up on workpiece according to the morpheme feature on workpiece and with the step of the consult straight line that described reference line intersects vertically be: extend the consult straight line vertical with described reference line from the center of circle of one of them circle.
Wherein in an embodiment, the step setting up reference line on workpiece is: by the circle center line connecting of two circles on workpiece, set up reference line;
The step setting up the consult straight line intersected vertically with described reference line according to the morpheme feature on workpiece on workpiece is: by the circle center line connecting of two other circle on workpiece, set up consult straight line, and described consult straight line and described reference line intersect vertically.
In the measuring method of workpiece size of the present invention, owing to being set up consult straight line with the morpheme feature on workpiece, making the operation ajusting workpiece comparatively simple, be convenient to adopt instrument software automatically to ajust, reproducible.
Accompanying drawing explanation
Fig. 1 is the flow chart of steps of the measuring method of the workpiece size of an embodiment.
The measuring method that Fig. 2 is workpiece size shown in Fig. 1 sets up the schematic diagram of surving coordinate system.
Fig. 3 is the schematic diagram setting up surving coordinate system of another embodiment.
Fig. 4 is the schematic diagram setting up surving coordinate system of another embodiment.
Fig. 5 is the schematic diagram setting up surving coordinate system of another embodiment.
Fig. 6 is the schematic diagram setting up surving coordinate system of another embodiment.
Fig. 7 is the schematic diagram setting up surving coordinate system of another embodiment.
Fig. 8 is the schematic diagram setting up surving coordinate system of another embodiment.
Fig. 9 is the schematic diagram setting up surving coordinate system of another embodiment.
Embodiment
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.Better embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make to disclosure of the present invention understand more thorough comprehensively.
Refer to Fig. 1 and Fig. 2, the measuring method of the workpiece size of an embodiment, it comprises the following steps:
In step S101, for surving coordinate system set up by workpiece; Particularly, comprise the following steps:
In step S1011, on workpiece, set up reference line L1; Such as, first fixation workpiece, then sets up reference line L1 along the geometric center of workpiece or physical centre.In the present embodiment, reference line L1 is set up along edge the longest on workpiece.Such as, workpiece is fixed on image measurer or three-coordinates measuring machine.
In step S1012, on workpiece, set up the consult straight line L2 intersected vertically with reference line L1 according to the morpheme feature M on workpiece; Such as, extend from the morpheme feature M of the contiguous reference line L1 end of workpiece the consult straight line L2 intersected vertically with reference line L1.In the present embodiment, morpheme feature M is a little.Refer to Fig. 3 and Fig. 4, such as, morpheme feature M can be also line (see Fig. 3), circle (see Fig. 4) or circular arc, and such as morpheme feature M is the dowel hole on workpiece.
In step S1013, using reference line L1 as X-axis, using consult straight line L2 as Y-axis, using the intersection point of reference line L1 and consult straight line L2 as true origin O, and then set up surving coordinate system.
In step s 102, be that benchmark is measured workpiece size with described surving coordinate.
Such as, refer to Fig. 5, in step S101, by the circle center line connecting of two round C1, C2 on workpiece, set up reference line L1; In step S1012, extend the consult straight line L2 vertical with reference line L1 from the center of circle of circle C1; In step S1013, using reference line L1 as X-axis, using consult straight line L2 as Y-axis, using the intersection point of reference line L1 and consult straight line L2 as true origin O, and then set up surving coordinate system.
Such as, refer to Fig. 6, in step S1011, set up reference line L1 along edge the longest on workpiece; In step S1012, the edge along workpiece extends consult straight line L2, L3 and L4, and wherein consult straight line L2 is parallel with benchmark L1, and consult straight line L3 is parallel with consult straight line L4 and vertical with consult straight line L1; In step S1013, with the center line M1 of reference line L1 and consult straight line L2 for X-axis, using the center line M2 of consult straight line L3 and consult straight line L4 as Y-axis, using the intersection point of center line M1 and center line M2 as true origin O, and then set up surving coordinate system.
Such as, refer to Fig. 7, in step S1011, by the circle center line connecting of two round C1, C2 on workpiece, set up reference line L1; In step S1012, by the circle center line connecting of two other circle C3, C4 on workpiece, set up consult straight line L2, and consult straight line L2 and reference line L1 intersects vertically; In step S1013, using reference line L1 as X-axis, using consult straight line L2 as Y-axis, using the intersection point of reference line L1 and consult straight line L2 as true origin O, and then set up surving coordinate system.
Such as, refer to Fig. 8, in step S1011, by the circle center line connecting of two round C1, C2 on workpiece, set up reference line L1; In step S1012, extend from the some M of the contiguous reference line L1 end of workpiece the consult straight line L2 intersected vertically with reference line L1; In step S1013, using reference line L1 as X-axis, using consult straight line L2 as Y-axis, using the intersection point of reference line L1 and consult straight line L2 as true origin O, and then set up surving coordinate system.
Such as, refer to Fig. 9, in step S1011, by the circle center line connecting of two round C1, C2 on workpiece, set up reference line L1; In step S1012, by reference line L1 translation after the center of circle of circle C1 rotates predetermined angle, overlap with the center of circle of circle C2 away from the end points of circle C1 to make the reference line L1 after translation, thus obtain consult straight line L1 ', and extend the consult straight line L2 vertical with reference line L1 from the center of circle of circle C2; In step S1013, using consult straight line L1 ' as X-axis, using consult straight line L2 as Y-axis, using the intersection point of consult straight line L1 ' and consult straight line L2 as true origin O, and then set up surving coordinate system.Such as, a=-25 degree (being wherein negative value clockwise).
In the measuring method of workpiece size of the present invention, owing to being set up consult straight line with the morpheme feature on workpiece, making the operation ajusting workpiece comparatively simple, be convenient to adopt instrument software automatically to ajust, reproducible.And due to instrument software can be adopted to ajust, without personal error and fast and easy.In addition, owing to being with the longest for reference line on workpiece, make the operation of setting up reference line more simple.The data ocular and clear that the measuring method of described workpiece size is measured, very clear, can interact with workpiece drawing, and can ensure accurate, error is less.
Preferably, be, after benchmark is measured workpiece size, also can comprise the following steps the method being formed by numerically-controlled machine processing work with described surving coordinate: draw workpiece profile figure; Arc-shaped edges outline line in described workpiece profile figure and the outline line that is connected with described arc-shaped edges outline line are broken into many line segments; According to described workpiece profile graphic hotsopt digital control processing file; And numerically-controlled machine reads digital control processing file according to described digital control processing file processing work.Above-mentioned steps is specific as follows:
Draw workpiece profile figure.Particularly, the appearance profile curve of workpiece can be drawn in the CNC programming softwares such as CAD (ComputerAidedDesign, computer-aided design (CAD)).In the present embodiment, workpiece is rectangular housing, such as handset shell.Workpiece comprises four straight flanges and four arc-shaped edges.Article four, straight flange surrounds the structure of substantially rectangular shape, and namely four straight flanges are vertical between two, and adjacent two straight flanges are mutually vertical.The two ends of each arc-shaped edges connect the end points that adjacent two straight flanges are close to mutually respectively.Such as, the diameter of a circle corresponding to arc-shaped edges is 1 centimetre.Arc-shaped edges and straight flange smooth connection, the tangent line at end points place that namely arc-shaped edges is connected with straight flange overlaps with straight flange.
Arc-shaped edges outline line in described workpiece profile figure and the outline line that is connected with described arc-shaped edges outline line are broken into many line segments; Such as, the non-rectilinear in described workpiece profile figure is broken into many line segments; And for example, the maximum length of described line segment is set, such as according to the radian of arc-shaped edges outline line, both are inversely proportional to, and such as, radian is larger, then the maximum length of described line segment is shorter, and for example, the maximum length 80 microns of the corresponding described line segment of 1 radian, is broken into many line segments by arc-shaped edges outline line and the outline line that is connected with described arc-shaped edges outline line, its length is 80 microns, the length of remainder is less than 80 microns, corresponding 40 microns of 2 radians, by that analogy.Particularly, the outline line be connected with arc-shaped edges outline line can be broken into many line segments in whole or in part.In CAD, the junction of arc-shaped edges and straight flange and arc-shaped edges is broken into many line segments, such as, non-straight edges is divided the combination intending into multi-line section, comprise and arc-shaped edges and straight flange are punished with the connection of arc-shaped edges the combination intending into multi-line section; Such as, wherein the length of every bar line segment is 0.06 millimeter.Such as, the length of every bar line segment is 0.06 millimeter, and the length of last residue line segment is less than 0.06 millimeter.And for example, 1 centimetre length part of straight flange and arc-shaped edges junction is broken into line segment.Be appreciated that the length of every bar line segment can be 0.03-0.07 millimeter.Preferably, pre-set the relation of the maximum length of radian and line segment, such as, the maximum length being less than or equal to the corresponding line segment of 0.5 radian is 100 microns, the maximum length of 0.5 to 1 radian (containing 1 radian) corresponding line segment is 80 microns, the maximum length of 1 to 1.5 radian (containing 1.5 radians) corresponding line segment is 60 microns, and the maximum length of 1.5 to 2 radians (containing 2 radians) corresponding line segment is 40 microns, and the maximum length of more than 2 radians corresponding line segment is 30 microns; Further, the maximum length of described line segment is set respectively according to the radian of arc-shaped edges outline line.Such design, arc limit can be divided into many parts of line segments, straight line tool path pattern is easy to accurate control, thus is convenient to cutter and processes, and is also conducive to design of simplifying procedures.
According to described workpiece profile graphic hotsopt NC processed file; Such as, coding in the Autolisp developing instrument in CAD also generates NC processed file, and wherein tool path pattern is set to linear mode.In addition, also by adding CAM (computer-aidedmanufacturing, computer-aided manufacturing) module in CAD, then NC processed file can be generated by CAM related command.
Numerically-controlled machine reads NC processed file according to described NC processed file processing work.Particularly, NC processed file is imported in numerically-controlled machine, copy in numerically-controlled machine by NC processed file; The systematic parameter such as F parameter (speed of feed) of numerically-controlled machine is set, makes numerically-controlled machine read described NC processed file and perform processing order.Numerically-controlled machine is according to the whole outline line of F parameter processing work evenly.
In the method for above-mentioned employing numerically-controlled machine processing work, owing to the outline line of arc-shaped edges outline line and connected component thereof being all broken into many line segments in contour pattern, thus numerically-controlled machine is added can process according to the state modulator cutter of every bar line segment man-hour, make the workpiece fillet place after processing smooth, be not easy to workpiece be formed crest line and salient point, improve the machining precision of workpiece.In addition, the appearance of the workpiece that the method for above-mentioned employing numerically-controlled machine processing work processes is good, and fillet place is without the need to polishing.
Such as, the measuring method of the workpiece size that the mutual combination that other embodiments of the measuring method of workpiece size of the present invention also comprise the respective embodiments described above is formed.
Such as, the method for the employing numerically-controlled machine processing work that the mutual combination that other embodiments of the method for employing numerically-controlled machine processing work of the present invention also comprise the respective embodiments described above is formed.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a measuring method for workpiece size, is characterized in that, comprises the following steps:
For surving coordinate system set up by workpiece, comprise the following steps:
Reference line is set up on workpiece;
On workpiece, the consult straight line intersected vertically with described reference line is set up according to the morpheme feature on workpiece; And
Using described reference line as X-axis, using described consult straight line as Y-axis, using the intersection point of described reference line and described consult straight line as true origin, and then set up surving coordinate system; And
Be that benchmark is measured workpiece size with described surving coordinate.
2. the measuring method of workpiece size as claimed in claim 1, it is characterized in that, the step setting up reference line on workpiece is set up reference line along the geometric center of workpiece.
3. the measuring method of workpiece size as claimed in claim 1, is characterized in that, the step setting up reference line on workpiece is set up reference line along the physical centre of workpiece.
4. the measuring method of workpiece size as claimed in claim 1, it is characterized in that, the step setting up reference line on workpiece is set up reference line along edge the longest on workpiece.
5. the measuring method of workpiece size as claimed in claim 4, it is characterized in that, described morpheme is characterized as point, line, circle or circular arc.
6. the measuring method of workpiece size as claimed in claim 5, is characterized in that, when described morpheme is characterized as, described consult straight line is by described point.
7. the measuring method of workpiece size as claimed in claim 5, is characterized in that, when described morpheme is characterized as bowlder, described consult straight line is by the center of circle of described circle.
8. the measuring method of workpiece size as claimed in claim 5, is characterized in that, when described morpheme is characterized as circular arc, described consult straight line is by the center of circle of described circular arc.
9. the measuring method of workpiece size as claimed in claim 1, it is characterized in that, the step setting up reference line on workpiece is: by the circle center line connecting of two circles on workpiece, set up reference line;
Set up on workpiece according to the morpheme feature on workpiece and with the step of the consult straight line that described reference line intersects vertically be: extend the consult straight line vertical with described reference line from the center of circle of one of them circle.
10. the measuring method of workpiece size as claimed in claim 1, it is characterized in that, the step setting up reference line on workpiece is: by the circle center line connecting of two circles on workpiece, set up reference line;
The step setting up the consult straight line intersected vertically with described reference line according to the morpheme feature on workpiece on workpiece is: by the circle center line connecting of two other circle on workpiece, set up consult straight line, and described consult straight line and described reference line intersect vertically.
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Cited By (5)
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| CN107598673A (en) * | 2017-08-11 | 2018-01-19 | 太原科技大学 | The method that plane blank dimension benchmark based on shortest path determines |
| CN108037599A (en) * | 2017-11-27 | 2018-05-15 | 江西合力泰科技有限公司 | A kind of backlight module and detection method |
| CN109341612A (en) * | 2018-11-05 | 2019-02-15 | 西安飞机工业（集团）有限责任公司 | A method of illegally to establishing coordinate system on the basis of slotted hole |
| CN109668534A (en) * | 2017-10-17 | 2019-04-23 | 亚亚科技股份有限公司 | Detect the localization method of open pore steel plate |
| CN113091673A (en) * | 2021-03-23 | 2021-07-09 | 深圳市华星光电半导体显示技术有限公司 | Line width measuring method and line width measuring device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107598673A (en) * | 2017-08-11 | 2018-01-19 | 太原科技大学 | The method that plane blank dimension benchmark based on shortest path determines |
| CN107598673B (en) * | 2017-08-11 | 2019-07-05 | 太原科技大学 | The method determined based on the plane blank dimension benchmark of shortest path |
| CN109668534A (en) * | 2017-10-17 | 2019-04-23 | 亚亚科技股份有限公司 | Detect the localization method of open pore steel plate |
| CN109668534B (en) * | 2017-10-17 | 2021-04-30 | 亚亚科技股份有限公司 | Positioning method for detecting perforated steel plate |
| CN108037599A (en) * | 2017-11-27 | 2018-05-15 | 江西合力泰科技有限公司 | A kind of backlight module and detection method |
| CN108037599B (en) * | 2017-11-27 | 2023-10-13 | 江西合力泰科技有限公司 | Backlight module and detection method |
| CN109341612A (en) * | 2018-11-05 | 2019-02-15 | 西安飞机工业（集团）有限责任公司 | A method of illegally to establishing coordinate system on the basis of slotted hole |
| CN113091673A (en) * | 2021-03-23 | 2021-07-09 | 深圳市华星光电半导体显示技术有限公司 | Line width measuring method and line width measuring device |
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Application publication date: 20160504 |