CN114061529A - Aspheric surface measuring jig and aspheric surface measuring device - Google Patents
Aspheric surface measuring jig and aspheric surface measuring device Download PDFInfo
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- CN114061529A CN114061529A CN202111338531.8A CN202111338531A CN114061529A CN 114061529 A CN114061529 A CN 114061529A CN 202111338531 A CN202111338531 A CN 202111338531A CN 114061529 A CN114061529 A CN 114061529A
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- 230000000052 comparative effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000004441 surface measurement Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010063341 Metamorphopsia Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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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
- G01B21/22—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 angles or tapers; for testing the alignment of axes
- G01B21/24—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 angles or tapers; for testing the alignment of axes for testing alignment of axes
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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
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/02—Details
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Abstract
The application relates to an aspheric surface measuring jig and an aspheric surface measuring device. An aspheric surface measuring tool comprises: the jig main body is provided with a containing groove capable of containing a workpiece to be measured; and the limiting part is arranged on the jig main body, and one end of the limiting part can stretch into the accommodating groove or outwards displace relative to the accommodating groove along the radial displacement of the accommodating groove. When the aspheric surface measuring jig is used, a workpiece to be measured cannot move relative to the aspheric surface measuring jig, so that the measuring accuracy of the eccentric quantity is higher.
Description
Technical Field
The application relates to the technical field of aspheric surface measurement, in particular to an aspheric surface measuring jig and an aspheric surface measuring device.
Background
In aspheric surface is measurationed, place the lens that awaits measuring in the groove of establishing of inlaying of current tool usually, and then rotate this tool to utilize the eccentric appearance to carry out the measurement of eccentric volume, however, there is size error in the lens that awaits measuring of difference, and the lens that awaits measuring of placing in inlaying establishing the groove appears the interval because of the size error of the lens that awaits measuring and should inlaying between the lateral wall of establishing the groove easily, leads to appearing the displacement and forming great measurement error in aspheric surface measurement process.
Disclosure of Invention
Therefore, it is necessary to provide an aspheric surface measuring tool and an aspheric surface measuring device for solving the problem of large measurement error in the aspheric surface measuring process due to the size error of the lens to be measured.
According to an aspect of the present application, there is provided an aspheric surface measuring jig, including:
the jig main body is provided with a containing groove capable of containing a workpiece to be measured; and
the limiting part is arranged on the jig main body, and one end of the limiting part can stretch into the accommodating groove or outwards displace relative to the accommodating groove along the radial displacement of the accommodating groove.
In one embodiment, the jig main body comprises an annular main body part and at least two radial extension parts extending inwards in the radial direction of the annular main body part;
at least two of the radial extensions are circumferentially spaced around the annular main body portion.
In one embodiment, the radially extending portion has an abutment surface disposed opposite an outer peripheral surface of the annular main body portion.
In one embodiment, the abutment surface is arcuate.
In one embodiment, the radius of the abutment surface is 5-6 mm.
In one embodiment, at least one of the radial extending parts is provided with a through hole for the limiting part to penetrate through along the radial direction of the annular main body part;
the limiting component is arranged in the through hole;
the through hole is communicated with the accommodating groove.
In one embodiment, the spacing member comprises a microcatheter;
the central line of the micrometer head of the micrometer barrel is parallel to the radial direction of the annular main body part.
In one embodiment, the radial extension portion is capable of extending into the receiving groove or being outwardly displaced relative to the receiving groove along a radial displacement of the receiving groove.
In one embodiment, the radially extending portion is displaceable in a circumferential direction of the receiving groove.
In one embodiment, the aspheric surface measuring jig further includes a mounting member coaxial with the annular main body portion and detachably connected to the annular main body portion.
In one embodiment, the annular main body part is provided with a first mounting hole arranged along the axial direction of the annular main body part;
the mounting piece is provided with a second mounting hole;
the annular main body part and the mounting part are coaxially connected through the first mounting hole and the second mounting hole.
According to another aspect of the present application, an aspheric surface measuring device is provided, which includes the aspheric surface measuring fixture.
When the aspheric surface measuring jig and the aspheric surface measuring device are used, a workpiece to be measured can be placed in the accommodating groove, one end of the limiting part is extended into the accommodating groove along the radial displacement of the accommodating groove, so that the limiting part is abutted against the workpiece to be measured and is limited at the outer side of the workpiece to be measured, and the workpiece to be measured and the side wall of the accommodating groove are abutted against each other, thus the workpiece to be measured can be fixed in the accommodating groove, and the limiting part can be suitable for the workpieces to be measured with different size errors because one end of the limiting part can be radially displaced along the jig main body, the workpieces to be measured with different size errors can be limited and fixed by the aspheric surface measuring jig, so that the eccentricity can be measured by the eccentricity gauge, the workpiece to be measured can rotate together with the aspheric surface measuring jig, and the workpiece to be measured can not move relative to the aspheric surface measuring jig in the process, the measuring accuracy of the eccentricity is higher.
Drawings
Fig. 1 shows a schematic structural diagram (a first view angle) of a fixture main body and a workpiece to be tested in an embodiment of the present application;
fig. 2 is a schematic structural diagram illustrating an aspheric surface measuring tool and a workpiece to be measured according to an embodiment of the present application;
fig. 3 is a schematic structural diagram (second view angle) illustrating a fixture main body and a workpiece to be tested according to an embodiment of the present application;
fig. 4 is a top view of a jig main body and a workpiece to be measured according to an embodiment of the present application;
fig. 5 is a schematic structural diagram illustrating a jig main body and a workpiece to be tested in another embodiment of the present application;
fig. 6 is a top view of a jig main body and a workpiece to be measured in another embodiment of the present application.
In the figure: 10. an aspheric surface measuring tool; 110. a jig main body; 111. an annular main body portion; 1111. accommodating grooves; 1112. a notch; 1113. a first mounting hole; 1114. a first annular groove; 1115. a second annular groove; 112. a radial extension; 1121. an abutting surface; 1122. a through hole; 1123. a sub-abutting surface; 113. positioning the bolt; 120. a limiting component; 130. a workpiece to be tested; 140. and (4) a mounting piece.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, 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 at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" 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 also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
At present, the aspheric design of the aspheric mirror corrects images, solves the problems of distorted vision and the like, and simultaneously makes the lens lighter, thinner and flatter. Moreover, the aspheric mirror still maintains excellent impact resistance, and the advantages of the aspheric mirror make the application of the aspheric mirror more extensive.
The inventor has noticed that when a large number of lenses are fixed, adjusted and bonded, a large amount of center deviation will result in increased processing errors of the lenses, and thus, it is important to obtain a more precise eccentricity. In the measuring process of the eccentric amount, the lens to be measured is usually placed in the embedded groove of the existing jig, and then the jig is rotated, and the eccentric amount is measured by using the eccentric instrument, however, different lenses to be measured have dimension errors, the lens to be measured placed in the embedded groove is easy to displace in the measuring process of the eccentric amount due to the dimension error of the lens to be measured, that is, the lens to be measured placed in the embedded groove is placed in the embedded groove in an unadaptable manner due to the dimension error, and an interval exists between the lens to be measured and the jig, so that the lens to be measured can displace relative to the jig in the aspheric surface measuring process, and further a larger measuring error is formed.
In order to solve the problem that different lenses to be measured have size errors and have intervals with the jig, the applicant researches and discovers that a detachable limiting part can be arranged on the lens to be measured in design, the limiting part can be used for limiting the lenses to be measured with different size errors, the design can be used for limiting and fixing the lenses to be measured with different size errors, and then the lenses to be measured with different size errors can be subjected to aspheric surface measurement, such as eccentric measurement. In addition, in the process of measuring the aspheric surface of the lens to be measured, the lens to be measured cannot move relative to the limiting part because the lens to be measured is limited and fixed, so that the measurement error is small, and the measurement is more accurate.
Fig. 1 shows a schematic structural diagram of a fixture main body 110 and a workpiece 130 to be measured in an embodiment of the present application, and fig. 2 shows a schematic structural diagram of an aspheric surface measuring fixture 10 and a workpiece 130 to be measured in an embodiment of the present application.
Referring to fig. 1 and 2, an aspheric surface measuring tool 10 according to an embodiment of the present disclosure includes a tool main body 110 and a limiting component 120.
The fixture main body 110 has a receiving groove 1111 for receiving the workpiece 130 to be measured, the limiting component 120 is disposed on the fixture main body 110, and one end of the limiting component 120 can move along the radial direction of the receiving groove 1111 and extend into the receiving groove 1111 or move outward relative to the receiving groove 1111. When the aspheric surface measuring tool 10 is used, the tool main body 110 can be fixed in the region to be measured of the eccentricity instrument, the workpiece 130 to be measured can be placed in the receiving groove 1111, one end of the limiting part 120 can be displaced along the radial direction of the receiving groove 1111 and extend into the receiving groove 1111, so that the limiting part 120 is abutted against the workpiece 130 to be measured and is limited at the outer side of the workpiece 130 to be measured, and the side walls of the workpiece 130 to be measured and the receiving groove 1111 are abutted against each other, so that the workpiece 130 to be measured can be fixed in the receiving groove 1111, and because one end of the limiting part 120 can be displaced along the radial direction of the tool main body 110, the limiting part 120 can be adapted to workpieces 130 to be measured with different dimensional errors, the aspheric surface measuring tool 10 can be used to limit and fix the workpieces 130 to be measured with different dimensional errors, so as to measure the eccentricity by the eccentricity instrument, and the workpiece 130 to be measured can rotate together with the measuring tool 10, in this process, the workpiece 130 to be measured does not move relative to the aspheric surface measuring fixture 10, so that the measurement accuracy of the eccentricity is higher.
Further, referring to fig. 1 and fig. 2 again, the jig main body 110 includes an annular main body 111, and at least two radial extending portions 112 extending radially inward along the annular main body 111, and the at least two radial extending portions 112 are disposed at intervals around the annular main body 111 in the circumferential direction.
It will be appreciated that the annular main body portion 111 and the at least two radial extensions 112 together enclose a receiving groove 1111, the radial direction of the receiving groove 1111 being parallel to the radial direction of the annular main body portion 111. At least two radially extending portions 112 are also provided at intervals around the circumference of the receiving groove 1111.
When the aspheric surface measuring tool 10 is used, the tool main body 110 can be fixed in the region to be measured of the eccentricity gauge, and the workpiece 130 to be measured is placed in the receiving groove 1111, so that when one end of the limiting part 120 is radially displaced along the receiving groove 1111 and extends into the receiving groove 1111 and abuts against the workpiece 130 to be measured, at least one radial extending part 112 can also abut against the workpiece 130 to be measured, so that the workpiece 130 to be measured can be well fixed in the receiving groove 1111, and the eccentricity can be measured by the eccentricity gauge.
Further, referring to fig. 1 again, and referring to fig. 3 in combination, the radial extension portion 112 has an abutting surface 1121 disposed opposite to the outer peripheral surface of the annular main body portion 111.
That is, the abutting surface 1121 of the at least one radial extending portion 112 can radially abut against the workpiece 130 to be measured along the annular main body portion 111, so that, on one hand, one end of the limiting member 120 can radially displace along the jig main body 110 and extend into the receiving groove 1111, so that one end of the limiting member 120 radially abuts against the workpiece 130 to be measured along the annular main body portion 111, and on the other hand, the abutting surface 1121 of the at least one radial extending portion 112 can radially abut against the workpiece 130 to be measured along the annular main body portion 111, so that the workpiece 130 to be measured can be better fixed in the receiving groove 1111.
Optionally, a buffer member is disposed on the abutting surface 1121, and the buffer member is disposed between the abutting surface 1121 and the workpiece 130 to be measured, so as to protect the workpiece 130 to be measured and prevent the workpiece 130 to be measured from being damaged in the fixing process of the aspheric surface measuring fixture 10. Of course, the buffer can also be disposed on a side of the limiting component 120 facing the workpiece 130 to be measured, for protecting the workpiece 130 to be measured.
Optionally, the buffer member may be a rubber gasket, a foam, a silica gel gasket, or other materials capable of buffering and protecting the workpiece 130 to be tested.
In some embodiments, referring to fig. 1 and fig. 3 again, when the abutting surface 1121 of the radial extending portion 112 radially abuts against the workpiece 130 to be measured along the annular main body portion 111, the abutting surface 1121 of the radial extending portion 112 has a larger contact area with the workpiece 130 to be measured, so that the abutting surface 1121 of the radial extending portion 112 radially abuts against the workpiece 130 to be measured along the annular main body portion 111, and the workpiece 130 to be measured can be better fixed in the receiving groove 1111.
Further, the radius of the abutting surface 1121 is 5-6mm, so that the abutting surface 1121 can better cooperate with the outer periphery of the workpiece 130 to be measured, so as to better fix the workpiece 130 to be measured by using the aspheric surface measuring jig 10.
In other embodiments, referring to fig. 4, the abutting surface 1121 includes two sub-abutting surfaces 1123 connected in an angle, so that the two sub-abutting surfaces 1123 of the abutting surface 1121 can abut against the outer periphery of the workpiece 130 to be measured, i.e., the two sub-abutting surfaces 1123 can be respectively tangent to the outer periphery of the workpiece 130 to be measured, so as to increase the contact area between the radial extending portion 112 and the workpiece 130 to be measured, and also enable the abutting surface 1121 to be suitable for workpieces to be measured with different sizes, particularly for workpieces 130 to be measured with different dimensional errors, so as to better fix the workpiece 130 to be measured by using the aspheric surface measuring tool 10.
Further, referring to fig. 2 again, at least one of the radial extending portions 112 has a through hole 1122 for the limiting member 120 to pass through along the annular main body portion 111 in the radial direction, the limiting member 120 is mounted in the through hole 1122, and the through hole 1122 is communicated with the receiving groove 1111, so that the limiting member 120 can pass through the through hole 1122 along the annular main body portion 111 in the radial direction, so that one end of the limiting member 120 can move along the jig main body 110 in the radial direction to extend into the receiving groove 1111 or move outward relative to the receiving groove 1111.
In some embodiments, referring to fig. 2 again, one of the radial extending portions 112 has a through hole 1122 for the limiting member 120 to pass through along the radial direction of the annular main body 111, and the limiting member 120 is installed in the through hole 1122.
In other embodiments, two of the radial extending portions 112 have through holes 1122 for the limiting members 120 to penetrate through along the radial direction of the annular main body portion 111, and the two limiting members 120 are correspondingly installed in the two through holes 1122, so that the workpiece 130 to be measured in the receiving groove 1111 can be better fixed by the two limiting members 120.
In some embodiments, each of the plurality of radial extending portions 112 has a through hole 1122 for the limiting member 120 to penetrate through along the radial direction of the annular main body portion 111, the number of the limiting members 120 is also plural, each limiting member 120 is installed in the corresponding through hole 1122, and the workpiece 130 to be measured in the receiving groove 1111 can be better fixed by using the plurality of limiting members 120.
Further, the position limiting part 120 includes a micrometer barrel, and a center line of a micrometer head of the micrometer barrel is parallel to the radial direction of the annular main body part 111.
It can be understood that the micrometer head of the micrometer barrel can displace along the radial direction of the annular main body portion 111 to abut against the workpiece 130 to be measured, that is, the micrometer head of the micrometer barrel can displace along the radial direction of the receiving groove 1111 to abut against the workpiece 130 to be measured.
When the aspheric surface measuring tool 10 is used, the tool main body 110 can be fixed in the region to be measured of the eccentric instrument, the workpiece 130 to be measured is placed in the accommodating groove 1111, and one end of the micrometer barrel far away from the micrometer head is rotated to enable the micrometer head of the micrometer barrel to displace along the radial direction of the annular main body part 111, that is, the micrometer head of the micrometer barrel can extend into the accommodating groove 1111 or displace outwards relative to the accommodating groove 1111 along the radial displacement of the accommodating groove 1111, so that the limiting part 120 abuts against the workpiece 130 to be measured, and the workpiece 130 to be measured with different size errors can be fixed in the accommodating groove 1111 in a limiting manner by using the micrometer barrel.
Further, referring to fig. 1 and fig. 2 again, the annular main body 111 is provided with a notch 1112 located on one side of the through hole 1122 away from the receiving groove 1111 and communicated with the through hole 1122, a size of an end of the notch 1112 facing the through hole 1122 is smaller than a size of an end of the notch 1112 away from the through hole 1122, a size of an end of the micrometer barrel away from the micrometer head is larger, so that the micrometer barrel can conveniently pass through the notch 1112 and be installed on the through hole 1122, and the micrometer head of the micrometer barrel can pass through the notch 1112 and the through hole 1122, so that the micrometer head of the micrometer barrel can conveniently displace along the radial direction of the annular main body 111.
Further, referring to fig. 5 and fig. 6, the radial extension portion 112 can extend into the receiving groove 1111 or outwardly displace relative to the receiving groove 1111 along the radial displacement of the receiving groove 1111. The radial extending portions 112 can be displaced along the radial direction of the receiving groove 1111 according to the workpieces 130 to be measured with different sizes, so that the abutting surface 1121 of at least one of the radial extending portions 112 can abut against the workpiece 130 to be measured, thereby improving the applicability of the aspheric surface measuring tool 10.
Further, referring to fig. 5 and fig. 6 again, the radial extending portion 112 can be displaced along the circumferential direction of the receiving groove 1111, so as to adjust the position of the radial extending portion 112 along the circumferential direction of the receiving groove 1111 according to different workpieces 130 to be measured, and further ensure that the abutting surface 1121 of the at least one radial extending portion 112 can abut against the workpieces 130 to be measured, for example, the position of the radial extending portion 112 along the circumferential direction of the receiving groove 1111 is adjusted according to the outer circumferential surface of the workpieces 130 to be measured, so that the abutting surface 1121 of the at least one radial extending portion 112 can be substantially matched with the outer circumferential surface of the workpieces 130 to be measured, the contact area between the abutting surface 1121 of the radial extending portion 112 and the workpieces 130 to be measured is increased, and the installation firmness of the workpieces 130 to be measured can also be improved.
Alternatively, referring to fig. 5, a first annular groove 1114 formed along the circumferential direction of the annular main body 111 is disposed on the inner circumferential surface of the annular main body 111, and the radial extending portions 112 are movably disposed in the first annular groove 1114 along the circumferential direction of the receiving groove 1111, referring to fig. 6, a second annular groove 1115 formed along the circumferential direction of the annular main body 111 is disposed on the top surface of the annular main body 111, each radial extending portion 112 can be fixed on the first annular groove 1114 by the positioning bolt 113, specifically, the outer diameter of the bolt head of the positioning bolt 113 is greater than the groove width of the second annular groove 1115, so that the thread section of the positioning bolt 113 can pass through the second annular groove 1115, but the bolt head of the positioning bolt 113 cannot pass through the second annular groove 1115. Each radial extension portion 112 is provided with a threaded hole matched with the positioning bolt 113, a threaded section of the positioning bolt 113 penetrates through the second annular groove 1115 along a direction perpendicular to the top surface of the annular main body portion 111 and is connected with the threaded hole of the corresponding radial extension portion 112, a bolt head of the positioning bolt 113 abuts against the top surface of the annular main body portion 111 along the direction perpendicular to the top surface of the annular main body portion 111, and therefore the corresponding radial extension portion 112 is positioned on the first annular groove 1114.
When the position of the radial extending portion 112 along the circumferential direction of the receiving groove 1111 needs to be adjusted, the corresponding positioning bolt 113 can be loosened, and after the radial extending portion 112 is displaced to a proper position along the circumferential direction of the receiving groove 1111, the corresponding positioning bolt 113 is tightened, so that the radial extending portion 112 is fixed at the proper position.
When it is necessary to displace the radially extending portion 112 along the receiving groove 1111 in the radial direction, the corresponding positioning bolt 113 may be loosened, the radially extending portion 112 may be displaced along the first annular groove 1114 and along the receiving groove 1111 in the radial direction, and after the displacement to the proper position, the corresponding positioning bolt 113 may be tightened to fix the radially extending portion 112 in the proper position.
Further, referring to fig. 1 and fig. 3 again, the aspheric surface measuring jig 10 further includes a mounting member 140 coaxially and detachably connected to the annular main body portion 111, when the aspheric surface measuring jig 10 is used, the annular main body portion 111 is connected to the annular main body portion 111 along the axial direction of the annular main body portion 111, then the workpiece 130 to be measured is fixed in the receiving groove 1111 with the top surface of the workpiece 130 to be measured facing upward, the side of the mounting member 140 away from the annular main body portion 111 is fixed in the region to be measured of the eccentricity meter, after the eccentricity meter is used to measure the eccentricity of the top surface of the workpiece 130 to be measured, the annular main body portion 111 is detached from the mounting member 140 (the workpiece 130 to be measured is still fixed on the annular main body portion 111), the annular main body portion 111 is turned over 180 degrees, and the bottom surface of the workpiece 130 to be measured faces upward, so as to measure the eccentricity of the bottom surface of the workpiece 130 to be measured, the eccentric quantity can be measured on the top surface and the bottom surface of the workpiece 130 to be measured respectively under the condition that the workpiece 130 to be measured is not disassembled, the measuring accuracy is improved, and the measuring accuracy of the eccentric quantity is prevented from being influenced by the assembling error caused by feeding and discharging.
Further, referring to fig. 1 and fig. 3 again, the annular main body 111 is provided with a first mounting hole 1113 axially disposed along the annular main body 111, the mounting member 140 is provided with a second mounting hole, and the annular main body 111 and the mounting member 140 are coaxially connected by means of the first mounting hole 1113 and the second mounting hole, so that the annular main body 111 and the mounting member 140 can be detachably connected.
Specifically, the first mounting hole 1113 and the second mounting hole are both threaded holes, and the annular main body portion 111 and the mounting member 140 can be connected by means of bolts and threads matched with the threaded holes, so that the annular main body portion 111 is conveniently mounted on and dismounted from the mounting member 140.
An aspheric surface measuring device provided in an embodiment of the present application includes the aspheric surface measuring tool 10, when the aspheric surface measuring tool 10 is used, the tool main body 110 can be fixed on the region to be measured of the eccentric instrument, the workpiece 130 to be measured is placed in the receiving groove 1111, and the at least two radial extending portions 112 are circumferentially spaced around the receiving groove 1111, and then the end of the micrometer barrel away from the micrometer head is rotated to displace the micrometer head of the micrometer barrel along the radial direction of the annular main body portion 111, that is, the micrometer head of the micrometer barrel can be displaced along the radial direction of the jig main body 110 to extend into the receiving groove 1111 or be displaced outward relative to the receiving groove 1111, so that the micrometer head of the micrometer cylinder can be abutted against the workpiece 130 to be measured, and at least one radial extension portion 112 can be abutted against the workpiece 130 to be measured, this allows the workpiece 130 to be measured to be well fixed in the receiving groove 1111, so that the eccentricity measurement can be performed by the eccentricity gauge.
In some embodiments, referring to fig. 1 and fig. 3 again, the number of the radial extending portions 112 is three, the micrometer cylinder radially penetrates through one of the radial extending portions 112 along the annular main body portion 111, and the micrometer head of the micrometer cylinder can radially move along the jig main body 110 to extend into the receiving groove 1111 or outwardly move relative to the receiving groove 1111, so that the micrometer head of the micrometer cylinder abuts against the workpiece 130 to be measured, and the other two radial extending portions 112 also abut against the workpiece 130 to be measured, thereby enabling the workpiece 130 to be measured to be well limited and fixed in the receiving groove 1111.
Optionally, the radial extending portion 112 has a vacuum absorption hole for absorbing the workpiece 130 to be measured, the vacuum absorption hole is disposed on the abutting surface 1121 of the radial extending portion 112, and a vacuum extractor is externally connected to the vacuum absorption hole, when the aspheric surface measuring jig 10 is used to fix the workpiece 130 to be measured, when the abutting surface 1121 of a certain radial extending portion 112 abuts against the workpiece 130 to be measured, the vacuum extractor can perform a vacuum extraction operation, so that the workpiece 130 to be measured is absorbed on the abutting surface 1121, thereby improving the fixing effect of the workpiece 130 to be measured, so as to better utilize the eccentricity meter to measure the eccentricity.
Further, the aspheric surface measuring device further includes a rotating mechanism, the rotating mechanism is in transmission connection with the fixture main body 110, the rotating mechanism is used for driving the fixture main body 110 to rotate around the central line of the fixture main body 110, the rotating mechanism can be used for driving the fixture main body 110 to rotate around the central line of the fixture main body 110, and in the rotating process, the eccentricity measurement is performed by using the eccentricity meter.
In some embodiments, the aspheric surface measuring tool 10 of the present application is used to fix the workpiece 130 to be measured, and the eccentricity and the inclination are measured by the eccentricity meter twice, and each measurement can obtain data of one eccentricity and one inclination. Then, the workpiece 130 to be measured is detached from the aspheric surface measuring jig 10, the aspheric surface measuring jig 10 of the present application is reused to fix the workpiece 130 to be measured, and the eccentricity and the inclination are measured twice by means of the eccentricity gauge; this was repeated 3 times.
Similarly, in the comparative example, the workpiece 130 to be measured is inserted into the insertion groove of the existing jig, and the eccentricity and the inclination are measured twice by the eccentricity meter, and data of one eccentricity and one inclination can be obtained every time the eccentricity and the inclination are measured. Then taking the workpiece 130 to be measured out of the existing jig, embedding the workpiece 130 to be measured in the embedding groove of the existing jig again, and measuring the eccentricity and the inclination twice by means of an eccentricity gauge; this was repeated 3 times.
Table 1 lists a data list of the measurement of the eccentricity by means of the eccentricity gauge using the aspheric surface measuring jig 10 of the present application and the existing jig in the comparative example.
In table 1 above, the nth feeding refers to fixing the workpiece 130 to be measured the nth time by using the aspheric surface measuring device 10 of the present application, or embedding the workpiece 130 to be measured in the embedding groove of the existing device for the nth time. In the nth feeding, the measurement is carried out twice, and the data of the eccentric amount of the two times can be respectively obtained. The total deviation of the eccentricity amounts is equal to the difference between the maximum value and the minimum value in all the data of the eccentricity amounts obtained by using the same jig in the above table 1.
As can be seen from table 1, compared with the total deviation of the eccentric amount obtained by using the existing jig, the total deviation of the eccentric amount obtained by using the aspheric surface measuring jig 10 of the present application is smaller, and the total deviation of the eccentric amount is reduced from about 18 μm to about 6 μm, obviously, the total deviation of the eccentric amount obtained by using the aspheric surface measuring jig 10 of the present application is significantly reduced, and thus, the accuracy of the eccentric amount obtained by using the aspheric surface measuring jig 10 of the present application is significantly improved.
Table 2 lists a data list of the measurement of the inclination by means of the eccentricity gauge using the aspheric surface measuring jig 10 of the present application and the existing jig in the comparative example.
In table 2 above, the nth feeding refers to fixing the workpiece 130 to be measured the nth time by using the aspheric surface measuring device 10 of the present application, or embedding the workpiece 130 to be measured in the embedding groove of the existing device for the nth time. In the nth feeding, the measurement is performed twice, and the data of the inclination of the two times can be respectively obtained. The total deviation of the inclination is equal to the difference between the maximum value and the minimum value of all the data of the inclination obtained by using the same jig in the above table 2.
As can be seen from table 2, compared to the total inclination deviation obtained by using the existing jig, the total inclination deviation obtained by using the aspheric surface measuring jig 10 of the present application is smaller, and the total inclination deviation is reduced from 0.0172 ° to 0.0092 °. Obviously, the total inclination deviation obtained by using the aspheric surface measuring jig 10 of the present application is significantly reduced, and then, the accuracy of the inclination obtained by using the aspheric surface measuring jig 10 of the present application is significantly improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (12)
1. An aspheric surface measuring jig is characterized by comprising:
the jig main body is provided with a containing groove capable of containing a workpiece to be measured; and
the limiting part is arranged on the jig main body, and one end of the limiting part can stretch into the accommodating groove or outwards displace relative to the accommodating groove along the radial displacement of the accommodating groove.
2. The aspheric surface measuring fixture of claim 1, wherein the fixture body includes an annular main body portion and at least two radial extension portions extending radially inward along the annular main body portion;
at least two of the radial extensions are circumferentially spaced around the annular main body portion.
3. The aspheric surface measuring fixture as claimed in claim 2, wherein the radial extension portion has an abutting surface disposed opposite to the outer peripheral surface of the annular main body portion.
4. The aspheric surface measuring device as claimed in claim 3, wherein the abutment surface is curved.
5. The aspheric surface measuring device as claimed in claim 4, wherein the radius of the abutting surface is 5-6 mm.
6. The aspheric surface measuring fixture according to claim 2, wherein at least one of the radial extending portions has a through hole for the limiting member to pass through along the radial direction of the annular main body portion;
the limiting component is arranged in the through hole;
the through hole is communicated with the accommodating groove.
7. The aspheric surface measuring fixture of claim 6, wherein the limiting member comprises a micrometer cylinder;
the central line of the micrometer head of the micrometer barrel is parallel to the radial direction of the annular main body part.
8. The aspheric surface measuring fixture of claim 2, wherein the radial extending portion is capable of extending into the receiving groove or outwardly displacing relative to the receiving groove along the radial displacement of the receiving groove.
9. The aspheric surface measuring fixture as claimed in claim 2 or 8, wherein the radial extension portion is capable of displacing along a circumferential direction of the receiving groove.
10. The aspheric surface measuring fixture of claim 2, further comprising a mounting member coaxial with the annular main body and detachably connected to the annular main body.
11. The aspheric surface measuring fixture according to claim 10, wherein the annular main body has a first mounting hole axially disposed along the annular main body;
the mounting piece is provided with a second mounting hole;
the annular main body part and the mounting part are coaxially connected through the first mounting hole and the second mounting hole.
12. An aspheric surface measuring device comprising the aspheric surface measuring tool according to any one of claims 1-11.
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| CN2021112843889 | 2021-11-01 | ||
| CN202111284388 | 2021-11-01 |
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Cited By (1)
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| CN114061529B (en) | 2023-08-08 |
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Effective date of registration: 20240108 Address after: 518109, Building E4, 101, Foxconn Industrial Park, No. 2 East Ring 2nd Road, Fukang Community, Longhua Street, Longhua District, Shenzhen City, Guangdong Province (formerly Building 1, 1st Floor, G2 District), H3, H1, and H7 factories in K2 District, North Shenchao Optoelectronic Technology Park, Minqing Road, Guangdong Province Patentee after: INTERFACE OPTOELECTRONICS (SHENZHEN) Co.,Ltd. Patentee after: Interface Technology (Chengdu) Co., Ltd. Patentee after: GENERAL INTERFACE SOLUTION Ltd. Address before: No.689 Hezuo Road, West District, high tech Zone, Chengdu City, Sichuan Province Patentee before: Interface Technology (Chengdu) Co., Ltd. Patentee before: INTERFACE OPTOELECTRONICS (SHENZHEN) Co.,Ltd. Patentee before: Yicheng Photoelectric (Wuxi) Co.,Ltd. Patentee before: GENERAL INTERFACE SOLUTION Ltd. |