CN111879212A - Method for detecting space size of part - Google Patents
Method for detecting space size of part Download PDFInfo
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- CN111879212A CN111879212A CN202010793919.6A CN202010793919A CN111879212A CN 111879212 A CN111879212 A CN 111879212A CN 202010793919 A CN202010793919 A CN 202010793919A CN 111879212 A CN111879212 A CN 111879212A
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention discloses a method for detecting the space size of a part, which comprises the steps of using a square ruler and a square ruler in a matching way when measuring the length size between a space point and an entity edge, respectively defining two included angle edges of the part, which are not included by 90 degrees, of the long ruler edge of the square ruler and the angle ruler edge of the square ruler, further constructing the extension lines of the two included angle edges and the space intersection point of the extension lines of the two included angle edges, simultaneously defining the entity edge of the part by using the short ruler edge of the square ruler, using a vernier caliper in a matching way to know the length size between the entity edge and the space point of the part, configuring a corresponding plug block for the entity hole and inserting the plug block into the entity hole in a sliding way when measuring the hole pitch size between the space point and the entity hole, constructing the hole axis of the entity hole, then using a straight ruler and a universal vernier caliper in a matching way, and respectively constructing the extension lines and the space intersection point of the two included angle edges, which are, and the hole distance size between the part solid hole and the space point can be known by matching with the vernier caliper.
Description
Technical Field
The invention relates to the field of machining measurement, in particular to a method for detecting the space size of a part.
Background
The parts need to be processed according to a design drawing and detection after processing. Then, in the actual processing and detection process, the dimensions marked on the individual design patterns cannot be directly detected, for example, in various special-shaped parts in aerospace and related industries, especially irregular sheet metal parts with non-90-degree included angles exist, after stamping or manual bending forming, various included angle structures exist, and space extended lines formed by the included angle structures intersect to form space points, and in the actual processing, the hole pitch dimensions between the space points and solid holes or the length dimensions between the space points and the solid edges need to be ensured and detected, but the space points and the space extended lines are virtually existed and cannot be used as actual measurement references in the detection process.
In order to solve the measurement problem of the relevant dimension of the spatial point, a traditional measuring device such as a vernier caliper can be used, but two persons must cooperate with each other, one person takes a steel plate or a measuring block to tightly attach to an included angle edge to obtain a measurement reference, and the other person holds the caliper by hand to measure the defined measurement reference.
The other method is to adopt a special angle caliper or a profile template for manufacturing for detection, but each specification part needs to be provided with a corresponding template, so the method is not suitable for measuring various parts with various specifications in medium and small batches, and meanwhile, the template detection is difficult to control in the measuring process, is influenced by the hand strength of a detector, the stress application part and the width of a measuring tool, has larger error of a detection result, needs to measure for multiple times to obtain an average value, and influences the measuring efficiency; and the detection precision of the sample plate is not high (usually 0.5-0.3 mm), and in the production and acceptance work of products with higher precision such as aerospace and Tiangong product connection angle piece parts, because the related space dimension precision of the parts is higher (the sheet metal tolerance is +/-0.1 mm), the sample plate can not be used for effective inspection.
And the other measurement method is to adopt three-coordinate measurement equipment for fitting detection, because the detection equipment is expensive and the detection operation is also complicated, meanwhile, the three-coordinate measurement equipment is usually used for detecting the first part of a batch product or detecting a single task part as a sheet metal part with poor consistency, if each product is inspected, the production efficiency is greatly weakened, and meanwhile, the three-coordinate measurement equipment with high manufacturing cost is wasted.
In summary, the prior art does not have an effective way to measure the relevant spatial dimension of a part with an included angle of not 90 °, so how to quickly and accurately detect the relevant dimension of a product spatial point becomes a current research direction.
Disclosure of Invention
Aiming at the defects in the prior art, the invention discloses a method for measuring the space size of a part, which comprises the steps of using a square ruler and a square ruler in a matching way when measuring the length size between a space point and a solid edge, respectively defining two included angle edges of the part, which are not included by 90 degrees, by using the long ruler edge of the square ruler and the angle ruler edge of the square ruler, further constructing extension lines of the two included angle edges and a space intersection point of the extension lines of the two included angle edges, simultaneously defining the solid edge of the part by using the short ruler edge of the square ruler, and using a vernier caliper in a matching way to know the length size between the solid edge and the space point of the part, configuring a corresponding plug block for the solid hole and inserting the plug block into the solid hole in a sliding way when measuring the hole pitch size between the space point and the solid hole, constructing the hole axis line of the solid hole, then using the straight ruler and a universal ruler in a matching way, and respectively constructing the extension lines of the two included angle edges, which are not included angle, and the hole distance size between the part solid hole and the space point can be known by matching with the vernier caliper.
The invention is realized by the following technical scheme:
a detection method of the space size of a part comprises the steps that the part is of a sheet metal structure, two sides of the part are bent to form a second included angle side located in the middle, and a first included angle side and a right-angle side located at two ends of the second included angle side; the second included angle edge and the right-angle edge are mutually vertical, and the included angle between the first included angle edge and the second included angle edge is not 90 degrees; the intersection of the first included angle edge, the second included angle edge and the right-angle edge is a rounding formed by bending; the first included angle edge, the second included angle edge and the right-angle edge are all provided with through holes which are arranged along the thickness direction of the part, and the through holes are provided with through hole axes; detecting that an angle ruler, an accessory ruler and a vernier caliper are needed; the angle ruler is provided with an angle ruler body edge; the detection method comprises the following steps:
step S100: defining space elements, specifically:
step S110: combining an angle ruler and an accessory ruler;
step S120: attaching the first included angle edge to the angle ruler body edge, and attaching the second included angle edge to the accessory ruler body edge;
the part of the side of the angle ruler body, which is not contacted with the first included angle side, is defined as a virtual extended side of the first included angle side;
and positioning a portion of the accessory ruler body edge not in contact with the second included angle edge as a virtual extended edge of the second included angle edge;
step S130: determining the intersection point of the virtual extending edge of the first included angle edge and the virtual extending edge of the second included angle edge as a space point;
step S200: defining a solid outline element;
step S300: the vernier caliper measures the space dimension, specifically the distance dimension between the space point and the solid contour element.
Further, the entity outline element is a right-angle side; the space dimension is specifically a space length dimension;
the accessory ruler body is a square ruler, the square ruler is provided with a long ruler and a short ruler which are perpendicular to each other, the long ruler is provided with a long ruler edge, and the short ruler is provided with a short ruler edge;
step S110 specifically includes: combining the long ruler parts of the angle ruler and the square ruler;
step S120 specifically includes: attaching the first included angle edge to the angle ruler body edge, and attaching the second included angle edge to the long ruler edge;
defining the part of the angle ruler body edge which is not contacted with the first included angle edge as a virtual extending edge of the first included angle edge;
and defining a portion of the long ruler edge not in contact with the second included angle edge as a virtual extended edge of the second included angle edge;
step S200 specifically includes: and (3) attaching the right-angle side and the short ruler side, so that the part in the short ruler side, which is in contact with the right-angle side, is defined as an entity outline element.
Further, step S300 specifically includes:
step S310: fixing the positions of the side of the body, the side of the long ruler and the side of the short ruler of the angle ruler;
step S320: removing the part from between the square and the square;
step S330: the distance between the space point and the short ruler edge is measured by a vernier caliper.
Further, step S330 specifically includes: the distance between the space point and the short ruler edge is measured by the inner jaw of the vernier caliper.
Another preferred, solid profile element is a through-hole axis; the space dimension is specifically the space pitch dimension; the detection also needs to use a plug gauge;
the plug gauge comprises a column part and a measuring part; the diameter of the column part is consistent with that of the through hole; the bottom surface of the measuring part is attached to the top surface of the upright post part, and the peripheral surface of the measuring part comprises a measuring surface; the measuring surface is vertical to the top surface of the upright part and is positioned on the same plane with the rotation center line of the upright part;
the accessory ruler body is a straight ruler; the square is provided with a square edge and a side edge which are vertical to each other;
step S110 specifically includes: combining a goniometer with a straight edge L2;
step S120 specifically includes: attaching the first included angle edge to the edge of the angle ruler body, and attaching the second included angle edge to the edge of the straight ruler;
the portion of the angle ruler body edge which is not contacted with the first included angle edge is defined as the virtual extending edge of the first included angle edge,
and positioning a portion of the straight edge not in contact with the second included angle edge as a virtual extended edge of the second included angle edge;
step S200: defining the outline elements of the entity specifically as follows:
step S210: plugging the column part into the through hole, wherein the end of the measuring part is positioned below the part;
step S220: attaching the side edge to the measuring surface to define the contact part of the side edge and the measuring surface as an entity outline element;
wherein the solid outline element is the position of the side edge at the moment.
Further, step S300 specifically includes:
step S310: fixing the positions of the body edge, the straight ruler edge and the side edge of the angle ruler at the moment;
step S320: removing the part together with the feeler gauge from between the angle rule and the straightedge;
step S330: the distance between the space point and the side was measured with a vernier caliper.
Further, step S330 specifically includes: the distance between the space point and the side edge is measured by a depth gauge of a vernier caliper.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1) the traditional angle ruler, the expected matched square, the ruler, the vernier caliper and the like are organically combined, the positions of the space points and the entity outline elements can be accurately established, the space size between the space points and the entity outline elements can be directly and accurately measured by the vernier caliper, the direct measurement mode is indirect and effective, the measurement precision of the vernier caliper is high (usually 0.01 or 0.02 mm), and the accuracy of the measurement result can be ensured for a high-precision product;
2) the used measuring tools are mutually matched, and can be completed by single person operation, so that the measurement convenience is improved;
3) compared with expensive three-coordinate measuring equipment, the cost of the angle ruler, the square ruler and the vernier caliper is low, and the economic applicability of the measuring method is reflected;
4) compared with the template measurement, the angle ruler, the square ruler and the vernier caliper are made of local materials in a factory and can be matched with each other to automatically adjust the measurement size according to the specification of the part, so that the measurement requirement is convenient, and the universality of the measurement method is reflected.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic view of a component structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of a square according to an embodiment of the present invention;
fig. 3 is a schematic view of a construction of a straightedge according to one embodiment of the present invention;
FIG. 4 is a schematic view of a bevel gauge according to an embodiment of the present invention;
FIG. 5 is a schematic view of a vernier caliper according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a plug gauge according to one embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating a method for determining relevant elements of a part during measurement of a spatial length dimension according to an embodiment of the present invention;
FIG. 8 is a schematic view of a spatial length dimension measurement in accordance with an embodiment of the present invention;
FIG. 9 is a schematic diagram illustrating a method for determining relevant elements of a part during space pitch dimension measurement according to an embodiment of the present invention;
FIG. 10 is a schematic view of a spatial pitch dimension measurement in accordance with an embodiment of the present invention;
FIG. 11 is a schematic view of the measurement of the included angle of the parts according to one embodiment of the present invention at an obtuse angle.
Reference numbers and corresponding part names in the drawings:
s-space dimension, S1-space length dimension, S2-space pitch dimension, 1000-part, 1000A-first included angle side, 1000B-second included angle side, 1000C-right angle side, 1000D-through hole, 1000D 1-through hole axis, V-angle ruler, Va-angle ruler body side, L-accessory ruler, L1-right angle ruler, L1 a-long ruler side, L1B-short ruler side, L2-straight ruler, L2 a-straight ruler side, L2B-side, P-vernier caliper, Q-feeler gauge, Q1-upright column part, Q2-measuring part, Q2 a-measuring surface and O-space point.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
In some embodiments, a method for detecting a spatial dimension of a part is provided, where the part 1000 is generally a sheet metal structure as shown in fig. 1, and is formed by bending in a stamping or manual manner, specifically, two sides of a rectangular sheet metal part are bent to form a second included angle edge 1000B located in the middle, and a first included angle edge 1000A and a right angle edge 1000C located at two ends of the second included angle edge 1000B. Second included angle edge 1000B and right-angle edge 1000C are perpendicular to each other, and the included angle between first included angle edge 1000A and second included angle edge 1000B is not 90 degrees. The intersection of the first included angle edge 1000A and the second included angle edge 1000B, and the second included angle edge 1000B and the right-angle edge 1000C will form a radius consistent with the contour of the punch due to the characteristics of stamping and bending. The first included angle edge 1000A, the second included angle edge 1000B and the right-angle edge 1000C are all provided with through holes 1000D formed in the thickness direction of the part 1000, and the through holes 1000D have through hole axes 1000D 1. The difficulty of processing and measuring the parts lies in the existence of the space dimension S, and because the corresponding bending part forms an inverted round structure after bending, actual intersection points do not exist between the first included angle edge 1000A and the second included angle edge 1000B, and only the intersection of the virtual extension edge of the first included angle edge 1000A and the virtual extension edge of the second included angle edge 1000B is a space point O. After the part 1000 is finally formed, some spatial dimensions S related to the spatial point O need to be ensured, such as a spatial length dimension S1, i.e., a distance between the spatial point O and a solid side, and a spatial pitch dimension S2, i.e., a distance between the spatial point S and a through hole axis 1000D1, and the like, so that the dimensions cannot be measured by using the existing measuring tool and measuring method.
The detection needs to use some existing measuring tools, specifically, the angle ruler V, the accessory ruler L and the vernier caliper P shown in fig. 2 to 5, wherein the accessory ruler L is an accessory of the angle ruler V, and the accessory ruler L and the angle ruler V are used in a matching manner when in use, and the instruments are all obtained in a tool room in a manufacturing factory, which is very convenient. The angle gauge V is a universal vernier angle gauge, and the vernier caliper P is a vernier caliper with the precision of 0.02mm or a vernier caliper with the precision of 0.01 mm. The detection is carried out by utilizing the mutual matching of the measuring instruments, and the detection method generally comprises the following steps: step S100: a spatial element is defined. Step S200: defining a solid outline element. Step S300: the vernier caliper P measures the spatial dimension S. The above is a general way of measuring the space dimension S, and the specific contents will be different according to the type of the space dimension S, which will be described in detail below.
As shown in fig. 7 and 8, when the space dimension S is a space length dimension S1, the solid profile elements are square edges 1000C, the optional accessory ruler L is a square edge L1 shown in fig. 2, the square edge L1 has a long ruler and a short ruler perpendicular to each other, the long ruler has a long ruler edge L1a, the short ruler has a short ruler edge L1b, the specific measurement method is as follows,
step S100: defining space elements, specifically:
step S110: the protractor sections of the V and L1 are insertedly combined in the manner of figure 7.
Step S120: as shown in fig. 7, the first angled edge 1000A is attached to the angle blade side Va, and the second angled edge 1000B is attached to the long blade side L1 a. The portion of the tape side Va not in contact with the first included angle side 1000A is defined as the virtual extended side of the first included angle side 1000A, and the portion of the tape side L1a not in contact with the second included angle side 1000B is positioned as the virtual extended side of the second included angle side 1000B.
Step S130: the intersection point of the virtual elongated edge of the first included angle edge 1000A and the virtual elongated edge of the second included angle edge 1000B is determined as a space point O. The space point O is the intersection of the angle scale body side Va and the long scale side L1 a.
Step S200: the solid outline element is defined by, specifically, as shown in fig. 7, fitting the perpendicular side 1000C to the short side L1b so that the portion of the short side L1b that contacts the perpendicular side 1000C is defined as the solid outline element. I.e. where the solid outline element is the short leg L1b for this time.
Step S300: the vernier caliper P measures the spatial dimension S. As shown in fig. 7 and 8, specifically, comprises
Step S310: fixing the positions of the angle ruler body side Va, the long ruler side L1a and the short ruler side L1 b;
step S320: removing part 1000 from between square V and square L1;
step S330: the distance between the point O and the short side L1b is measured with the inner jaw of the caliper P. The resulting distance dimension is the spatial length dimension S1.
As shown in fig. 9 and 10, when the space dimension S is a space pitch dimension S2, the solid outline element is a through-hole axis 1000D 1; the detection also requires the use of a plug gauge Q. The plug gauge Q includes a column portion Q1 and a measurement portion Q2 as shown in fig. 6; the pillar portion Q1 has a diameter identical to that of the through hole 1000D; the bottom surface of the measuring part Q2 is attached to the top surface of the upright post part Q1, and the peripheral surface of the measuring part Q2 comprises a measuring surface Q2 a; the measurement plane Q2a is perpendicular to the top surface of the upright section Q1 and is in the same plane as the center line of rotation of the upright section Q1. The accessory ruler L is specifically a straight ruler L2. L1 has a straight edge L2a and a side edge L2b perpendicular to each other, the side edge L2b may be a hypotenuse, and the intersection of the straight edge L2a and the side edge L2b forms a sharp point. The specific measurement method is as follows:
step S100: defining space elements, specifically:
step S110: the angle gauge V and the straight edge L2 are combined in a plug-in manner as shown in fig. 9.
Step S120: as shown in fig. 9, the first angled leg 1000A is attached to the angle blade leg Va and the second angled leg 1000B is attached to the straight leg L2a such that the portion of the angle blade leg Va not in contact with the first angled leg 1000A is defined as the virtual extended leg of the first angled leg 1000A and the portion of the straight leg L2a not in contact with the second angled leg 1000B is positioned as the virtual extended leg of the second angled leg 1000B;
step S130: the intersection point of the virtual elongated edge of the first included angle edge 1000A and the virtual elongated edge of the second included angle edge 1000B is determined as a space point O. The space point O is the intersection of the angle ruler body side Va and the straight side L2 a.
Step S200: defining a solid outline element. The method specifically comprises the following steps:
step S210: the column part Q1 is inserted into the through hole 1000D as shown in FIG. 9, and the end where the measurement part Q2 is located is below the component 1000; here, the plug gauge Q should be configured according to the size of the bore of the through hole 1000D such that the measuring part Q2 is clearance-fitted in the through hole 1000D and the amount of clearance is controlled to be less than 0.03mm on both sides, and the measuring part Q2 of the plug gauge Q is a semicircle for the convenience of manufacture.
Step S220: the side edge L2b is attached to the measuring surface Q2a, so that the contact part of the side edge L2b with the measuring surface Q2a is defined as a solid outline element, and the contact part is a sharp point where the side edge L2b and the straight edge L2a meet.
Step S300: the vernier caliper P measures the spatial dimension S, as shown in fig. 9 and 10:
step S310: fixing the positions of the angle ruler body side Va, the straight ruler side L2a and the side L2 b;
step S320: removing the part 1000 with the feeler gauge Q from between the angle gauge V and the straight edge L2;
step S330: and (3) measuring the distance between the space point O and the side L2b by using a depth ruler of the vernier caliper P, specifically measuring the distance between the space point O and a sharp point where the side L2b and the straight edge L2a meet by using the vernier caliper P.
It should be noted that, the above description is only for the application that the through hole 1000D is located on the second included angle side 1000B, and a person skilled in the art should be able to know how to measure the relevant space dimension S when the through hole 1000D is located on the first included angle side 1000A or other positions from the above description, and meanwhile, the above description is specifically a use manner when the included angle between the first included angle side 1000A and the second included angle side 1000B is an acute angle, and if the included angle is switched to the obtuse angle state shown in fig. 11, a person skilled in the art should also be able to know how to measure, that is, the measuring device used in the present application can measure the space relevant dimension of the included angle of 0 to 180 degrees.
As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural, unless the context clearly dictates otherwise.
The above embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A method for detecting the space size of a part comprises the steps that the part (1000) is of a sheet metal structure, two sides of the part (1000) are bent to form a second included angle edge (1000B) located in the middle, a first included angle edge (1000A) and a right-angle edge (1000C) located at two ends of the second included angle edge (1000B); the second included angle edge (1000B) and the right-angle edge (1000C) are mutually vertical, and the included angle between the first included angle edge (1000A) and the second included angle edge (1000B) is not 90 degrees; the intersection of the first included angle edge (1000A), the second included angle edge (1000B) and the right-angle edge (1000C) is a rounding formed by bending; the first included angle edge (1000A), the second included angle edge (1000B) and the right-angle edge (1000C) are all provided with through holes (1000D) formed in the thickness direction of the part (1000), and the through holes (1000D) are provided with through hole axis lines (1000D 1); the method is characterized in that:
detecting the need of using an angle ruler (V), an accessory ruler (L) and a vernier caliper (P); the angle ruler (V) is provided with an angle ruler body side (Va); the detection method comprises the following steps:
step S100: defining space elements, specifically:
step S110: combining an angle ruler (V) and an accessory ruler (L);
step S120: attaching the first included angle edge (1000A) to the angle ruler body edge (Va), and attaching the second included angle edge (1000B) to the accessory ruler body edge (L);
a part of the angle ruler body side (Va) which is not contacted with the first included angle side (1000A) is defined as a virtual extending side of the first included angle side (1000A);
and a portion of the body side of the accessory ruler (L) which is not in contact with the second included angle side (1000B) is positioned as a virtual extended side of the second included angle side (1000B);
step S130: determining an intersection point of the virtual extension side of the first included angle side (1000A) and the virtual extension side of the second included angle side (1000B) as a space point (O);
step S200: defining a solid outline element;
step S300: a vernier caliper (P) measures the spatial dimension (S), in particular the distance dimension between a spatial point (O) and a physical contour element.
2. The detection method according to claim 1, characterized in that: the entity outline element is a right-angle edge (1000C); the spatial dimension (S) is specifically a spatial length dimension (S1);
the fitting ruler (L) is specifically a square ruler (L1), the square ruler (L1) is provided with a long ruler and a short ruler which are perpendicular to each other, the long ruler is provided with a long ruler edge (L1 a), and the short ruler is provided with a short ruler edge (L1 b);
step S110 specifically includes: -combining the long-foot parts of the square (L1) and the angle (V);
step S120 specifically includes: attaching a first angle clamping edge (1000A) and an angle ruler body edge (Va), and attaching a second angle clamping edge (1000B) and a long ruler edge (L1 a);
defining the part of the angle ruler body side (Va) which is not contacted with the first included angle side (1000A) as a virtual extension side of the first included angle side (1000A);
and a portion of the long side (L1 a) which is not in contact with the second included angle side (1000B) is defined as a virtual extension side of the second included angle side (1000B);
step S200 specifically includes: the square edge (1000C) is attached to the short blade edge (L1 b) so that the part of the short blade edge (L1 b) in contact with the square edge (1000C) is defined as a solid outline element.
3. The detection method according to claim 2, characterized in that: step S300 specifically includes:
step S310: fixing the positions of the body side (Va), the long side (L1 a) and the short side (L1 b) of the angle ruler at the moment;
step S320: removing the part (1000) from between the square (V) and the L1;
step S330: the distance between the space point (O) and the short side (L1 b) is measured with a vernier caliper (P).
4. The detection method according to claim 3, characterized in that: step S330 specifically includes: the distance between the space point (O) and the short side (L1 b) is measured by the inner jaw of the vernier caliper (P).
5. The detection method according to claim 1, characterized in that: the solid outline element is a through-hole axis (1000D 1); the spatial dimension (S) is specifically a spatial pitch dimension (S2); the detection also requires the use of a plug gauge (Q);
the plug gauge (Q) comprises a column part (Q1) and a measuring part (Q2); the diameter of the pillar (Q1) is identical to that of the through hole (1000D); the bottom surface of the measuring part (Q2) is attached to the top surface of the upright part (Q1), and the peripheral surface of the measuring part (Q2) comprises a measuring surface (Q2 a); the measuring surface (Q2 a) is vertical to the top surface of the upright part (Q1) and is in the same plane with the rotation center line of the upright part (Q1);
the accessory ruler (L) is specifically a straight ruler (L2); the square (L1) is provided with a square edge (L2 a) and a side edge (L2 b) which are perpendicular to each other;
step S110 specifically includes: combining the angle gauge (V) with the straightedge L2;
step S120 specifically includes: attaching a first included angle side (1000A) and an angle ruler body side (Va) and attaching a second included angle side (1000B) and a straight ruler side (L2 a);
the part of the angle ruler body side (Va) which is not contacted with the first included angle side (1000A) is defined as a virtual extending side of the first included angle side (1000A),
and a portion of the straight side (L2 a) not in contact with the second clip corner side (1000B) is positioned as a virtual extended side of the second clip corner side (1000B);
step S200: defining the outline elements of the entity specifically as follows:
step S210: the upright part (Q1) is plugged into the through hole (1000D), and the end of the measuring part (Q2) is positioned below the part (1000);
step S220: attaching the side edge (L2 b) to the measuring surface (Q2 a) to define the contact part of the side edge (L2 b) and the measuring surface (Q2 a) as a solid outline element;
wherein the solid outline element is the position of the side edge (L2 b) at the moment.
6. The detection method according to claim 5, characterized in that: step S300 specifically includes:
step S310: fixing the positions of the body side (Va), the straight edge (L2 a) and the side edge (L2 b) of the angle ruler at the moment;
step S320: removing the part (1000) together with the plug gauge (Q) from between the angle gauge (V) and the straight edge (L2);
step S330: the distance between the point in space (O) and the side (L2 b) is measured with a vernier caliper (P).
7. The detection method according to claim 6, characterized in that: step S330 specifically includes: the distance between the space point (O) and the side (L2 b) is measured by a depth gauge of a vernier caliper (P).
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| CN202010793919.6A CN111879212A (en) | 2020-08-10 | 2020-08-10 | Method for detecting space size of part |
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| CN202010793919.6A CN111879212A (en) | 2020-08-10 | 2020-08-10 | Method for detecting space size of part |
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| CN111879212A true CN111879212A (en) | 2020-11-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267112A (en) * | 2021-03-29 | 2021-08-17 | 河北沧海核装备科技股份有限公司 | Method for measuring bending angle of induction heating bent pipe |
| US11497592B2 (en) * | 2017-04-28 | 2022-11-15 | Universidad De La Frontera | Instrument for in situ measurement of the angle of convergence in a dental preparation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5735701A (en) * | 1980-08-13 | 1982-02-26 | Shichiro Kato | Ruler |
| CN105021110A (en) * | 2015-07-17 | 2015-11-04 | 西安航空动力股份有限公司 | Measuring tool for measuring degree surface special point distances |
| CN108917546A (en) * | 2018-07-12 | 2018-11-30 | 优德精密工业（昆山）股份有限公司 | A kind of CRT fixing seat inclined hole checking tool and its method |
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2020
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5735701A (en) * | 1980-08-13 | 1982-02-26 | Shichiro Kato | Ruler |
| CN105021110A (en) * | 2015-07-17 | 2015-11-04 | 西安航空动力股份有限公司 | Measuring tool for measuring degree surface special point distances |
| CN108917546A (en) * | 2018-07-12 | 2018-11-30 | 优德精密工业（昆山）股份有限公司 | A kind of CRT fixing seat inclined hole checking tool and its method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11497592B2 (en) * | 2017-04-28 | 2022-11-15 | Universidad De La Frontera | Instrument for in situ measurement of the angle of convergence in a dental preparation |
| CN113267112A (en) * | 2021-03-29 | 2021-08-17 | 河北沧海核装备科技股份有限公司 | Method for measuring bending angle of induction heating bent pipe |
| CN113267112B (en) * | 2021-03-29 | 2022-08-19 | 河北沧海核装备科技股份有限公司 | Method for measuring bending angle of induction heating bent pipe |
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