CN112595281B - Method and medium for rapidly measuring surface profile of workpiece - Google Patents
Method and medium for rapidly measuring surface profile of workpiece Download PDFInfo
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- CN112595281B CN112595281B CN202011645298.3A CN202011645298A CN112595281B CN 112595281 B CN112595281 B CN 112595281B CN 202011645298 A CN202011645298 A CN 202011645298A CN 112595281 B CN112595281 B CN 112595281B
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- 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
- G01B21/20—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 contours or curvatures, e.g. determining profile
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Abstract
The invention discloses a method for quickly measuring the surface profile of a workpiece, which comprises the following steps: the workpiece is provided with a planar surface to be measured, and the datum comprises a first datum plane and a second datum; the angle between the surface to be measured and the first reference surface is a first angle; the distance between the surface to be measured and the second reference is the target distance of the profile tolerance. Placing an auxiliary detection tool on the horizontal measuring table, wherein the auxiliary detection tool comprises a first detection tool surface and a second detection tool surface which form a second angle with each other, the first detection tool surface is in a horizontal state, and the second angle is complementary with the first angle; and fixing the workpiece on the auxiliary checking fixture, so that the surface to be detected is in a horizontal state. The indirect distance is the distance between the surface to be detected and the first detection tool surface; and calculating an estimated value of the target distance according to the indirect distance, wherein the estimated value of the target distance is the profile tolerance value of the surface to be measured. The method for rapidly measuring the surface profile of the workpiece can rapidly measure the plane profile, is convenient for improving the detection quantity of mass products, and further improves the overall qualification rate of the products.
Description
Technical Field
The invention relates to the technical field of size detection, in particular to a method and a medium for rapidly measuring the surface profile of a workpiece.
Background
In the inspection of parts, measurement and inspection of surface profile is often involved, the surface profile is a geometric element which is difficult to define, and the surface profile can not be accurately defined by a small number of parameters like a general regular geometric element, so that the inspection of the machining precision of the free-form surface is complicated, and a CMM three-coordinate measuring machine is often adopted for measurement in order to ensure the accuracy of the inspection.
Although the CMM has a high precision in three-coordinate measurement, because of its complicated operation, it involves that the part must be first subjected to point acquisition and alignment, and then the position of the reference surface is measured after the alignment is completed, and finally the element to be measured can be measured. The process of aligning and measuring the datum plane needs long time, and the requirement on measuring personnel is high, so that the method is only suitable for measuring the sampling profile of a small quantity of batch parts at present and is difficult to carry out rapid large-batch profile measurement. Especially in mass production, because the sample quantity that detects is difficult to promote, difficult to avoid having the defective products that omits the detection and flow out, influence the holistic qualification rate of product, bring not good use experience for the consumer easily.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a method and a medium for rapidly measuring the surface profile of a workpiece, which can rapidly measure the surface profile, is convenient for improving the detection amount of mass products and further improves the overall qualification rate of the products.
One of the purposes of the invention is realized by adopting the following technical scheme:
a method for rapidly measuring the surface profile of a workpiece comprises the following steps:
and (3) confirming the reference surface and the surface to be measured: the workpiece is provided with a planar surface to be measured, and the reference of the surface to be measured comprises a first reference surface and a second reference which are vertical to each other; the angle between the surface to be measured and the first reference surface is a first angle, and the value of the first angle is alpha; the distance between the surface to be measured and the second reference along the direction of the first reference surface is a target distance of the profile tolerance;
auxiliary positioning: placing an auxiliary detection tool on a horizontal measuring table, wherein the auxiliary detection tool comprises a first detection tool surface and a second detection tool surface which form a second angle with each other, the first detection tool surface is in a horizontal state, and the second angle is complementary with the first angle; fixing the workpiece on an auxiliary detection tool, so that a first reference surface of the workpiece is parallel to the second detection tool surface, and the surface to be detected is in a horizontal state;
measurement and calculation: acquiring indirect distances, wherein the indirect distances are distances between a plurality of different position points on the surface to be detected and the first detection tool surface; and calculating to obtain an estimated value of the target distance according to the indirect distance, wherein the estimated value of the target distance is the value of the profile degree of the surface to be measured.
Further, the method also comprises a qualification judging step, wherein the qualification judging step comprises the following steps:
if the ideal value of the target distance is a and the tolerance of the profile tolerance of the surface to be measured is +/-x, the theoretical value b of the indirect distance is a multiplied by sin alpha;
and when the indirect distance is in the range of b +/-x, judging that the profile tolerance of the surface to be measured is qualified.
Further, the step of qualification further comprises the step of filtering assembly errors as follows:
and when the indirect distance is b +/-0.01, judging that the profile degree of the surface to be detected is qualified.
Further, the method also comprises a qualification judging step, wherein the qualification judging step comprises the following steps:
the target distance is an estimate of the indirect distance/sin α;
if the ideal value of the target distance is a and the tolerance of the profile tolerance of the surface to be measured is +/-x, the tolerance value of the target distance is +/-x/sin alpha;
and when the estimated value of the target distance is within a range of a +/-x/sin alpha, judging that the profile degree of the surface to be detected is qualified.
Further, the step of qualification further comprises the step of filtering assembly errors as follows:
and when the estimated value of the target distance is in the range of a +/-x (x-0.01)/sin alpha, judging that the profile degree of the surface to be detected is qualified.
Further, in the auxiliary positioning step, the first reference surface of the workpiece is in contact with the second detection tool surface.
Furthermore, the auxiliary detection tool further comprises a containing hole, the containing hole is formed in the second detection tool surface, and the containing hole is used for containing a protrusion located on a second reference of the workpiece.
Further, in the measuring and calculating step, the indirect distance is a distance between two points on the surface to be measured in the front, rear, left and right directions and the first detection tool surface.
Further, the indirect distance is measured by a three-coordinate measuring machine.
Further, the first angle ranges from 0 ° to 90 °.
The second purpose of the invention is realized by adopting the following technical scheme:
a computer readable storage medium, the computer readable storage medium comprising a stored computer program; wherein the computer readable storage medium controls the apparatus where the computer readable storage medium is located to execute the measurement estimation step in the method for fast measuring the surface profile of the workpiece when running.
The method for measuring the surface profile degree in the prior art has some defects, and the scheme improves the defects. In the step of confirming the reference and the surface to be measured, the relation between the surface to be measured and the reference can be confirmed by directly reading a drawing of the workpiece, so that preparation is made for a subsequent auxiliary positioning step. According to the information obtained in the last step, in the auxiliary positioning step, by means of the auxiliary detection tool, no matter what direction and angle the surface to be detected is in under the ordinary state, the auxiliary detection tool finally enables the surface to be detected of the workpiece to be in a horizontal state, the surface in the horizontal state is horizontal relative to the inclined plane, the steps of point-sampling leveling and reference surface measurement in the existing ordinary measurement mode are avoided, and a large amount of time is saved. In addition, in the measurement calculation step, the estimated value of the target distance, that is, the value of the profile degree of the surface to be measured can be calculated by only measuring the indirect distance.
The method has the advantages that the relation between the surface to be detected of the workpiece and the first reference surface and the second reference is utilized, the auxiliary detection tool is used, the detection steps are greatly simplified, a large amount of operation time is saved, the reproducibility is high, the method is quite suitable for measuring the profile degree with a large number of samples when a certain product is produced in a large scale in an industrialized mode, the phenomenon of defective product outflow caused by a small amount of sampling is avoided, the control on the profile degree precision in the product production process is enhanced, and the qualification rate of the final finished product is higher.
Drawings
FIG. 1 is a block flow diagram of a method for rapidly measuring the surface profile of a workpiece according to the present invention;
FIG. 2 is a schematic view of a workpiece according to a first embodiment of the present invention;
FIG. 3 is a schematic view illustrating a workpiece mounted on an auxiliary fixture in a first embodiment of the invention;
FIG. 4 is a first schematic drawing with portions of the dimensions of FIG. 3 abstracted away;
fig. 5 is a second schematic diagram of fig. 3 with some dimensions abstracted.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specified.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Fig. 1 to 5 show a method for rapidly measuring the surface profile of a workpiece according to the present invention, which includes a reference and to-be-measured surface 11 confirmation step, an auxiliary positioning step, and a measurement calculation step:
the step of confirming the reference and the surface to be measured 11 comprises the following steps: the workpiece 1 is provided with a planar surface to be measured 11, and the reference of the surface to be measured 11 comprises a first reference surface A and a second reference B which are perpendicular to each other; an angle between the surface to be measured 11 and the first reference surface a is a first angle 12, a value of the first angle 12 is α, and a range of the value α of the first angle 12 is preferably an acute angle of 0 ° to 90 °; the distance between the surface to be measured 11 and the second reference B along the direction of the first reference surface A is a target distance 13 of the profile degree; in the actual measurement and detection, the workpiece 1 to be measured has corresponding drawings, and the sizes and the tolerances of the workpiece 1 to be measured can be marked on the drawings, so that the positions of the surface 11 to be measured, the first reference surface a and the second reference surface B and the relationship among the positions can be directly obtained by reading the drawings. The second reference B may be a reference plane or a reference axis, and does not affect the implementation of the method.
The auxiliary positioning step comprises: placing an auxiliary detection tool 2 on a horizontal measuring table, wherein the auxiliary detection tool 2 comprises a first detection tool face 22 and a second detection tool face 23 which form a second angle 21 with each other, the first detection tool face 22 is in a horizontal state, and the second angle 21 is complementary with the first angle 12; because the first angle 12 and the second angle 21 are complementary, when the workpiece 1 is fixed on the auxiliary detection tool 2, as long as the first reference plane a of the workpiece 1 is parallel to the second detection tool surface 23, the surface to be detected 11 is in a horizontal state; according to the information obtained in the step of confirming the reference and the surface to be measured 11, the auxiliary detection tool 2 is used in the auxiliary positioning step, no matter what direction and angle the surface to be measured 11 is in under the ordinary state, the auxiliary detection tool 2 can finally enable the surface to be measured 11 of the workpiece 1 to be in the horizontal state, the surface in the horizontal state is already horizontal relative to the inclined plane, the steps of point-taking leveling and reference surface measurement in the existing ordinary measuring mode are avoided, and a large amount of time is saved.
The measurement estimation step comprises the following steps: acquiring indirect distance 3, wherein the indirect distance 3 is the distance between the points at different positions on the surface to be measured 11 and the first detection tool surface 22, and the indirect distance 3 can be measured without leveling and by directly taking the first detection tool surface 22 as a reference; and calculating an estimated value of the target distance 13 according to the indirect distance 3, wherein the estimated value of the target distance 13 is a contour degree value of the surface to be measured 11, and in actual calculation, because the target distance 13 and the indirect distance 3 form a right triangle with an angle of alpha, the estimated value of the target distance 13 can be conveniently calculated by utilizing a trigonometric function on the premise of knowing the indirect distance 3. The measured value of the target distance 13 may be recorded as a product size, as a basis for determining whether the profile is acceptable, or for other purposes.
It can be seen that the scheme of the invention utilizes the relationship between the surface to be detected 11 of the workpiece 1 and the first reference surface A and the second reference surface B, and is assisted by the auxiliary checking fixture 2, so that the detection steps are greatly simplified, a large amount of operation time is saved, the reproducibility is strong, the method is very suitable for profile measurement with a large number of samples when a certain product is industrially produced in large scale, the phenomenon of defective product outflow caused by a small amount of sampling is avoided, the control on the profile precision in the production process of the product is enhanced, and the qualification rate of the final finished product is higher.
After the measurement and calculation step obtains the estimated values of the indirect distance 3 and the target distance 13, in order to be better applied to the sample inspection, a qualification judgment step is further included, and two qualification judgment modes are provided in the embodiment, so that the method is convenient to use under different conditions.
The first qualification judging method comprises the following steps:
if the ideal value of the target distance 13 is a and the tolerance of the profile tolerance of the surface 11 to be measured is ± x, the theoretical value b of the indirect distance 3 may be calculated as a × sin α due to the right triangle relationship between the target distance 13 and the indirect distance 3; and when the indirect distance 3 is within the range of b +/-x, judging that the profile tolerance of the surface to be measured 11 is qualified. In the judging mode, whether the measured indirect distance 3 is qualified or not is judged directly, the specified profile tolerance (which can be directly obtained from a drawing) of the target distance 13 is directly used as the tolerance of the indirect distance 3, the estimation value of the target distance 13 is not required to be considered in the aspect of judging the qualification, and whether the measured workpiece 1 is qualified or not can be obtained more quickly.
The second qualification judging method includes:
due to the right triangle relationship between the target distance 13 and the indirect distance 3, the estimate of the target distance 13 is equal to the indirect distance 3/sin α; if the ideal value of the target distance 13 is a and the tolerance 111 of the profile of the surface 11 to be measured is ± x, the tolerance 131 of the target distance 13 is ± x/sin α; and when the estimated value of the target distance 13 is within a range of a +/-x/sin alpha, judging that the profile degree of the surface to be detected 11 is qualified. This determination method uses the estimated value of the target distance 13 as the determination basis, but considering that the estimated value of the target distance 13 is estimated, the tolerance 131 of the target distance 13 should also be estimated and estimated as ± x/sin α according to the relationship of the right triangle when the estimated value is used as the determination basis. The data record obtained by the method is more biased to the existing method and more direct, and the data record is more convenient for general personnel to check and examine as an inspector and a data record.
Because the auxiliary detection tool 2 is needed in the method and has an assembly relation with the auxiliary detection tool 2, in order to avoid assembly errors existing in the assembly process of the workpiece 1 and the auxiliary detection tool 2, the qualification judgment step also comprises an assembly error filtering step.
The assembly error filtering step of the first qualification judgment step is as follows: and when the indirect distance 3 is in the range of b +/-0.01, judging that the profile degree of the surface to be detected 11 is qualified.
The assembly error filtering step of the second qualification judgment step comprises the following steps: and when the estimated value of the target distance 13 is in the range of a +/-x (x-0.01)/sin alpha, judging that the profile degree of the surface to be detected 11 is qualified.
In addition, in order to ensure the parallelism between the first reference surface A of the workpiece 1 and the second detection tool surface 23 of the auxiliary detection tool 2, in the auxiliary positioning step, the first reference surface A of the workpiece 1 is attached to the second detection tool surface 23, so that the defect that the parallelism is difficult to ensure when the first reference surface A of the workpiece 1 is not in contact with the second detection tool surface 23 is avoided.
Because the shape of the workpiece 1 may not be completely regular, in order to ensure that the first reference surface a can be in contact with the second gauge surface 23, the auxiliary gauge 2 further includes a receiving hole, the receiving hole is formed in the second gauge surface 23, and the receiving hole is used for receiving a protrusion located on the second reference B of the workpiece 1, so that the protrusion is prevented from being blocked between the first reference surface a and the second gauge surface 23.
In order to ensure the accuracy of profile detection and that the detected profile is a plane rather than a line, in the measuring and calculating step, the indirect distance 3 is a distance between two points in the front, rear, left and right directions on the surface 11 to be detected and the first detection tool surface 22, and covers each position of the surface 11 to be detected as much as possible so as to reflect the real situation of the surface 11 to be detected. And in order to guarantee the accuracy of the measurement, it is preferable to measure the indirect distance 3 by means of a three-coordinate measuring machine.
To further illustrate the present solution, based on the above description, a first embodiment as shown in fig. 2 to 5 is also provided for illustration:
fig. 2 shows the dimensions of the surface 11 to be measured of the workpiece 1, the first reference surface a, the second reference B and its profile requirements, wherein the angle between the surface 11 to be measured and the first reference surface a is a first angle 12, and the value α of the first angle 12 is 44 °; the profile tolerance x of the surface to be measured 11 is +/-0.5 mm if the profile tolerance of the surface to be measured 11 is 0.1 mm; the first datum plane A and the second datum plane B are perpendicular to each other, the distance between the surface to be measured 11 and the second datum plane B is a target distance 13, the ideal value of the target distance 13 is 10.15mm, and the number of the columns where the B datum planes are located is two, so that the workpiece 1 can be prevented from rotating and shifting after being fixed on the auxiliary checking fixture.
Fig. 3 shows a cross-sectional view of the workpiece 1 when the workpiece 1 is mounted on the auxiliary detection tool 2, a first reference plane a of the workpiece 1 is attached to a second detection tool surface 23 of the auxiliary detection tool 2 in parallel, and the surface to be detected 11 and the first detection tool surface 22 are both in a horizontal state; the angle of the first gauge face 22 and the second gauge face 23 of the auxiliary gauge 2 is a second angle 21, and the second angle 21 is 136 ° and is complementary to 44 ° of the first angle 12.
For easy understanding, fig. 4 abstracts the right triangle in fig. 3, wherein the target distance 13 and the indirect distance 3 form a right triangle, the target distance 13 is the hypotenuse of the right triangle, the indirect distance 3 is a straight side of the right triangle, and when the value of the indirect distance 3 is measured, the calculated value of the target distance 13 of the hypotenuse can be obtained through a trigonometric function.
In the step of judging the qualification, the judging step according to the first judging method is as follows:
in this embodiment, the ideal value of the target distance 13 is 10.15mm, and the tolerance of the profile tolerance of the surface 11 to be measured is ± 0.05mm, so that the theoretical value of the indirect distance 3 is 10.15 × sin44 ° -7.05 mm; if the measured value of the indirect distance 3 is 7.01mm, and the 7.01mm is within the range of 7.05 +/-0.05 mm, the value of the profile tolerance is judged to be qualified. Or in order to consider the assembly error between the workpiece 1 and the auxiliary checking fixture 2, a more accurate judgment standard is adopted, and 0.01mm is subtracted from the absolute value of +/-0.05 mm, namely the tolerance range is reduced to +/-0.04 mm; then it is only qualified if the indirect distance 3 is within the range of 7.05 + -0.04 mm.
In the step of judging the qualification, the step of judging according to the second judgment method is as follows:
as shown in fig. 5, in the present embodiment, the ideal value of the target distance 13 is 10.15mm, and the profile tolerance 111 of the surface 11 to be measured is ± 0.05mm, so that the tolerance value 131 of the target distance 13 is ± 0.05/sin44 ° mm ± 0.07 mm. When the measured indirect distance 3 is 7.01mm, the estimated value of the target distance 13 is 7.01/sin44 ° mm to 10.09mm, and 10.09mm falls within the range of 10.15 ± 0.07mm, and the value of the profile tolerance is judged to be acceptable. Similarly, in order to consider the assembly error between the workpiece 1 and the auxiliary gauge 2, a more accurate judgment standard can be adopted, and 0.01mm is subtracted from the absolute value of +/-0.07 mm, namely the tolerance range is reduced to +/-0.06 mm; then the target distance 13 is only qualified if the estimate is within the range of 10.15 + -0.06 mm.
Furthermore, the present invention also provides a computer-readable storage medium including a stored computer program; the computer readable storage medium controls the equipment where the computer readable storage medium is located to execute the measurement calculation step in the method for rapidly measuring the surface profile of the workpiece when running.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. A method for rapidly measuring the surface profile of a workpiece is characterized by comprising the following steps:
and (3) confirming the reference surface and the surface to be measured: the workpiece is provided with a planar surface to be measured, and the reference of the surface to be measured comprises a first reference surface and a second reference which are vertical to each other; the angle between the surface to be measured and the first reference surface is a first angle, and the value of the first angle is alpha; the distance between the surface to be measured and the second reference along the direction of the first reference surface is a target distance of the profile tolerance;
auxiliary positioning: placing an auxiliary detection tool on a horizontal measuring table, wherein the auxiliary detection tool comprises a first detection tool surface and a second detection tool surface which form a second angle with each other, the first detection tool surface is in a horizontal state, and the second angle is complementary with the first angle; fixing the workpiece on an auxiliary detection tool, so that a first reference surface of the workpiece is parallel to a second detection tool surface, an intersection point of the first reference surface and the second reference surface is located on a plane where the first detection tool surface is located, and the surface to be detected is in a horizontal state;
measurement and calculation: acquiring indirect distances, wherein the indirect distances are distances between a plurality of different positions on the surface to be detected and the first detection tool surface; and calculating to obtain an estimated value of the target distance according to the indirect distance, wherein the estimated value of the target distance is the value of the profile degree of the surface to be measured.
2. The method for rapidly measuring the surface profile of a workpiece according to claim 1, further comprising a qualification judgment step, the qualification judgment step comprising:
if the ideal value of the target distance is a and the tolerance of the profile tolerance of the surface to be measured is +/-x, the theoretical value b of the indirect distance is a multiplied by sin alpha;
and when the indirect distance is in the range of b +/-x, judging that the profile tolerance of the surface to be detected is qualified.
3. The method for rapidly measuring the surface profile of a workpiece according to claim 2, wherein the qualification judging step further comprises an assembly error filtering step of:
and when the indirect distance is in the range of b +/-0.01, judging that the profile degree of the surface to be detected is qualified.
4. The method for rapidly measuring the surface profile of a workpiece according to claim 1, further comprising a qualification judgment step, the qualification judgment step comprising:
the target distance estimate is the indirect distance/sin α;
if the ideal value of the target distance is a and the profile tolerance of the surface to be measured is +/-x, determining that the tolerance value of the target distance is +/-x/sin alpha;
and when the estimated value of the target distance is within the range of a +/-x/sin alpha, judging that the profile tolerance of the surface to be detected is qualified.
5. The method for rapidly measuring the surface profile of a workpiece according to claim 4, wherein the qualification step further comprises an assembly error filtering step of:
and when the estimated value of the target distance is in the range of a +/-x (x-0.01)/sin alpha, judging that the profile degree of the surface to be detected is qualified.
6. The method for rapidly measuring the surface profile of a workpiece according to any one of claims 1 to 5, wherein in the auxiliary positioning step, the first reference surface of the workpiece is in contact with the second gauge surface.
7. The method for rapidly measuring the surface profile of a workpiece according to claim 6, wherein the auxiliary gauge further comprises a receiving hole which is opened in the surface of the second gauge and is used for receiving a projection on a second reference of the workpiece.
8. The method for rapidly measuring the surface profile of a workpiece according to claim 7, wherein in the measurement and estimation step, the indirect distance is a distance between two points in four directions, namely front, back, left and right, on the surface to be measured and the first gauge surface.
9. The method for rapidly measuring the surface profile of a workpiece according to claim 1, wherein the indirect distance is measured by a three-coordinate measuring machine, a stylus of the three-coordinate measuring machine is coupled to an altimeter, and the stylus is set to zero on the first gauge surface during measurement.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a stored computer program; wherein the computer readable storage medium controls an apparatus in which the computer readable storage medium is located to perform the measurement estimation step in the method for fast measuring the surface profile of the workpiece according to any one of claims 1 to 9 when the computer readable storage medium is executed.
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| US4213245A (en) * | 1977-02-08 | 1980-07-22 | British Steel Corporation | Profile gauging |
| JP2005009917A (en) * | 2003-06-17 | 2005-01-13 | Mitsutoyo Corp | Surface copying measuring instrument, surface copying measuring method, surface copying measuring program, and recording medium |
| KR101294450B1 (en) * | 2005-07-27 | 2013-08-07 | 코닝 인코포레이티드 | Apparatus and method for measuring a glass sheet |
| EP2527785A1 (en) * | 2011-05-20 | 2012-11-28 | Tata Steel UK Limited | Method and device for flatness measurement |
| TWI512264B (en) * | 2014-12-31 | 2015-12-11 | Taiwan Green Point Entpr Co | Workpiece detecting method and the method used by an assisted detection fixture |
| CN107063060A (en) * | 2017-03-30 | 2017-08-18 | 北京正木激光设备有限公司 | A kind of method and device for determining surface planarity |
| CN206930258U (en) * | 2017-06-20 | 2018-01-26 | 上海拖拉机内燃机有限公司 | A kind of Quick measurement tool in quantitative measurment face |
| CN108458684B (en) * | 2018-02-26 | 2024-03-08 | 南京星乔威泰克汽车零部件有限公司 | Surface profile detection device |
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