CN216205936U - Roundness measurement auxiliary clamp - Google Patents
Roundness measurement auxiliary clamp Download PDFInfo
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- CN216205936U CN216205936U CN202122640433.1U CN202122640433U CN216205936U CN 216205936 U CN216205936 U CN 216205936U CN 202122640433 U CN202122640433 U CN 202122640433U CN 216205936 U CN216205936 U CN 216205936U
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Abstract
The utility model provides a roundness measurement auxiliary clamp, which comprises: a profiling component and a limiting component; the limiting part is arranged on the profiling part and used for fixing a measuring rod of the dial indicator; the profiling component comprises a profiling contact portion for contacting a component to be measured having a spherical surface; the profiling contact part is positioned on a reference circumference; the profiling contact part is used for contacting the spherical surface of the part to be measured and moving along the spherical surface of the part to be measured, so that the dial indicator is abutted against the spherical surface of the part to be measured and moves along with the spherical surface of the part to be measured. Simple structure, the fixed reliable of amesdial, positioning accuracy is high, the simple operation, measurement of efficiency is high, is applicable to the multistation product detection of different specification models, can effectively solve the problem that the centre gripping is not firm, the location is inaccurate, detection efficiency is low in the product measurement process.
Description
Technical Field
The utility model relates to the technical field of mechanical tools, in particular to a roundness measurement auxiliary clamp.
Background
Currently, three-coordinate or roundness measuring instruments are mostly used for measuring roundness of spherical products, and the roundness of the spherical products measured by the three-coordinate or roundness measuring instruments needs to be measured after being clamped by a clamp; in addition, the positioning accuracy of the clamp is not high, the repeatability and the stability are poor, the clamp needs to be repeatedly positioned in the detection process, the number of components of the clamp is large, products with different specifications and models are detected, different clamps need to be used, the measurement efficiency is low, operators need to participate in the measurement process in real time, and the personnel waste is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a roundness measurement auxiliary clamp to solve the problems of low roundness detection precision, complex steps and low efficiency of the existing spherical products.
In order to solve the above technical problem, the present invention provides a roundness measurement auxiliary jig, which includes: a profiling component and a limiting component;
the limiting part is arranged on the profiling part and used for fixing a measuring rod of the dial indicator;
the profiling component comprises a profiling contact portion for contacting a component to be measured having a spherical surface; the profiling contact part is positioned on a reference circumference;
the profiling contact part is used for contacting the spherical surface of the part to be measured and moving along the spherical surface of the part to be measured, so that the dial indicator is abutted against the spherical surface of the part to be measured and moves along with the spherical surface of the part to be measured.
Optionally, the limiting component is used for limiting the extension of the measuring rod axis of the dial indicator along the limiting axis of the limiting component, and when the profiling contact part is in contact with the spherical surface of the component to be measured, the limiting axis extends along the normal direction of the spherical surface of the component to be measured.
Optionally, the contoured contact portion comprises contact points arranged on the reference circumference, and/or the contoured contact portion comprises a contact arc extending over the reference circumference.
Optionally, the contoured contact portion includes at least three of the contact points, or the contact arc extends annularly along an entire circumference of the reference circumference.
Optionally, the limiting component is configured to limit an axis of a measuring rod of the dial indicator to extend along a limiting axis of the limiting component, a plane where the reference circumference is located is perpendicular to the limiting axis, and a circle center of the reference circumference is located on the limiting axis.
Optionally, the profiling component has at least two profiling contact parts, and the at least two profiling contact parts are arranged at intervals along the direction of the limiting axis;
wherein a radius of a reference circumference of the contour contact portion near a center of a sphere of the part to be measured is larger than a radius of a reference circumference of the contour contact portion away from the center of the sphere of the part to be measured.
Optionally, at least two of the contoured contact portions are connected by a contoured surface transition, the contoured surface facing the component to be measured.
Optionally, the curved surface is a curved surface recessed towards the component to be measured.
Optionally, the limiting component is used for limiting the axis of the measuring rod of the dial indicator to extend along the limiting axis of the limiting component, the limiting component includes a through hole formed along the limiting axis and a screw hole formed along the radial direction of the through hole, and the screw hole is communicated with the through hole; the radial inner dimension of the through hole is matched with the outer diameter of the measuring rod of the dial indicator, and the through hole is used for the measuring rod of the dial indicator to penetrate through; the screw hole is used for screwing a fixing screw in so as to fix the measuring rod of the dial indicator.
Optionally, the limiting component includes at least two screw holes, and the at least two screw holes are circumferentially distributed around the through hole.
In summary, the present invention provides a roundness measurement auxiliary fixture, which includes: a profiling component and a limiting component; the limiting part is arranged on the profiling part and used for fixing a measuring rod of the dial indicator; the profiling component comprises a profiling contact portion for contacting a component to be measured having a spherical surface; the profiling contact part is positioned on a reference circumference; the profiling contact part is used for contacting the spherical surface of the part to be measured and moving along the spherical surface of the part to be measured, so that the dial indicator is abutted against the spherical surface of the part to be measured and moves along with the spherical surface of the part to be measured.
With the configuration, the limiting component can fix the measuring rod of the dial indicator, and then the copying contact part on the reference circumference is in contact with the spherical surface of the component to be measured and moves along the spherical surface of the component to be measured, so that the dial indicator can measure the roundness of the spherical surface of the component to be measured. Whole device simple structure, the fixed reliable of amesdial, positioning accuracy is high, the simple operation, measurement of efficiency is high, is applicable to the multistation product detection of different specification models, can effectively solve the problem that the centre gripping is not firm, the location is inaccurate, detection efficiency hangs down in the product measurement process, can solve the manpower waste of product clamping process simultaneously, reduces personnel's participation time.
Drawings
It will be appreciated by those skilled in the art that the drawings are provided for a better understanding of the utility model and do not constitute any limitation to the scope of the utility model. Wherein:
FIG. 1 is a schematic view of a part to be measured;
FIG. 2 is a schematic view of a roundness measurement assistance jig according to an embodiment of the present invention;
FIG. 3 is an exploded view of a roundness measurement assistance jig according to an embodiment of the present invention;
fig. 4 is a schematic view of an axial cross section of a roundness measurement auxiliary jig according to an embodiment of the present invention.
In the drawings:
01-a component to be measured; 02-spherical center; 10-a profiling member; 11-a contoured contact portion; 12-a profiling face; 20-a stop member; 21-a limit axis; 22-perforating holes; 23-screw holes; 24-a set screw; 30-dial gauge; 31-measuring rod; 32-header.
Detailed Description
To further clarify the objects, advantages and features of the present invention, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is to be noted that the drawings are in greatly simplified form and are not to scale, but are merely intended to facilitate and clarify the explanation of the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.
As used in this specification, the singular forms "a", "an" and "the" include plural referents, the term "or" is generally employed in its sense including "and/or," the terms "a" and "an" are generally employed in their sense including "at least one," the terms "at least two" are generally employed in their sense including "two or more," and the terms "first", "second" and "third" 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, features defined as "first", "second" and "third" may explicitly or implicitly include one or at least two of the features, "one end" and "the other end" and "proximal end" and "distal end" generally refer to the corresponding two parts, which include not only the end points, but also the terms "mounted", "connected" and "connected" should be understood broadly, e.g., as a fixed connection, as a detachable connection, or as an integral part; either directly or indirectly through intervening media, either internally or in any other relationship. Furthermore, as used in this specification, an element being disposed on another element generally only means that there is a connection, coupling, fit, or drive relationship between the two elements, and the connection, coupling, fit, or drive between the two elements may be direct or indirect through intermediate elements, and should not be understood as indicating or implying any spatial relationship between the two elements, i.e., an element may be in any orientation inside, outside, above, below, or to one side of another element, unless the content clearly dictates otherwise. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.
The utility model aims to provide a roundness measurement auxiliary clamp to solve the problems of low roundness detection precision, complex steps and low efficiency of the existing spherical products.
The following description refers to the accompanying drawings.
As shown in fig. 1, which shows a part 01 to be measured having a spherical surface, it should be understood that the part 01 to be measured having a spherical surface is not limited to the case where the entire outer surface of the part 01 to be measured has a complete spherical shape, and the part 01 to be measured has a spherical surface which may be a part or all of the outer surface thereof. For example, fig. 1 shows an exemplary component 01 to be measured, the outer surface of which is approximately hemispherical, which should be understood broadly as a component 01 to be measured having a spherical surface with a center of sphere 02.
Based on the description of the background art, the roundness detection precision and the complex steps and the low efficiency of the existing spherical products in the prior art are low. The inventor finds that the dial indicator 30 is commonly used for detecting the shape and position errors of a workpiece, and the dial indicator 30 comprises a measuring rod 31 and a gauge head 32, and can convert the axial linear displacement of a measuring head at the head part of the measuring rod 31 relative to the measuring rod 31 into the rotation of a pointer on the gauge head 32, so that the axial displacement of the measuring head relative to the measuring rod 31 can be known through reading. The dial indicator 30 is convenient to use and high in precision, but the dial indicator 30 is difficult to be directly applied to roundness detection of spherical products.
For this reason, the present embodiment provides a roundness measurement auxiliary jig. Referring to fig. 2 to 4, the roundness measurement auxiliary jig includes: a copying member 10 and a stopper member 20; the limiting part 20 is arranged on the profiling part 10 and is used for fixing a measuring rod 31 of the dial indicator 30; the copying member 10 comprises a copying contact portion 11, the copying contact portion 11 is used for contacting with a member to be measured 01 with a spherical surface; the contoured contact portion 11 is located on a reference circumference; the copying contact part 11 is used for contacting the spherical surface of the part to be measured 01 and moving along the spherical surface of the part to be measured 01, so that the dial indicator 30 abuts against the spherical surface of the part to be measured 01 and moves along with the spherical surface of the part to be measured 01.
With the configuration, the limiting component 20 can fix the measuring rod 31 of the dial indicator 30, and further, the profiling contact part 11 on the reference circumference is in contact with the spherical surface of the component 01 to be measured, and as the profiling contact part 11 is on the reference circumference, when the profiling contact part moves along the spherical surface of the component 01 to be measured, the relative distance between the profiling contact part and the spherical center 02 is kept unchanged, that is, the reference datum of the dial indicator 30 is formed, so that the dial indicator 30 is ensured to be measured at equal intervals in the measuring process, and the reference datum of a product does not need to be manually found and whether the product is horizontal or not is confirmed. Thereby, the dial gauge 30 can measure the roundness of the spherical surface of the member to be measured 01 by moving along the spherical surface of the member to be measured 01. Whole device simple structure, amesdial 30 fixed reliable, positioning accuracy is high, the simple operation, measurement of efficiency is high, is applicable to the multistation product testing of different specification models, can effectively solve the problem that the centre gripping is not firm, the location is inaccurate, detection efficiency hangs down in the product measurement process, can solve the manpower waste of product clamping process simultaneously, reduces personnel's participation time.
Optionally, the limiting part 20 is used for limiting the extension of the measuring rod axis of the dial indicator 30 along the limiting axis 21 of the limiting part 20. Preferably, when the contact portion 11 is in contact with the spherical surface of the component to be measured 01, the limit axis 21 extends in the normal direction of the spherical surface of the component to be measured 01. It can be understood that the limit axis 21 extends along the normal direction of the spherical surface of the part to be measured 01, and the measuring rod axis of the dial indicator 30 can be ensured to point to the spherical center 02 of the part to be measured 01, so that the measurement error of the dial indicator 30 can be reduced.
Referring to fig. 4, in an alternative example, the reference circle is located on a plane perpendicular to the limiting axis 21, and the center of the reference circle is located on the limiting axis 21. With such a configuration, the measuring rod 31 of the dial indicator 30 can be perpendicular to the contact portion between the copying contact portion 11 and the spherical surface of the part to be measured 01, and the axis of the measuring rod of the dial indicator 30 is ensured to point to the spherical center 02 of the part to be measured 01. Of course, in other embodiments, the reference circumference may not be perpendicular to the limit axis 21, but may form a certain angle with the limit axis 21, and the measuring rod 31 of the dial indicator 30 is inclined with respect to the contact portion of the profile contact portion 11 and the spherical surface of the component to be measured 01, but the same effect may be achieved as long as the axis of the measuring rod of the dial indicator 30 is ensured to point to the spherical center 02 of the component to be measured 01, and therefore, the embodiment is not limited thereto.
Optionally, the contoured contact portion 11 comprises contact points arranged on the reference circumference, and/or the contoured contact portion 11 comprises a contact arc extending on the reference circumference. In some embodiments, the contoured contact portion 11 may comprise at least three contact points, it being understood that three points may define a plane, and that at least three contact points arranged on the same reference circumference may contact the spherical surface of the component 01 to be measured, ensuring that the relative spacing of the contoured contact portion 11 from the spherical center 02 of the component 01 to be measured remains constant. In other embodiments, the contoured contact portion 11 comprises an arc of contact extending over a reference circumference, it being understood that the arc of contact may be viewed as a collection of points of contact, and thus the arc of contact may also achieve a similar effect as the points of contact. Of course, in other embodiments, the profiling contact portion 11 may include both a contact point and a contact arc, and the embodiment is not limited thereto.
In the example shown in fig. 4, the contact arc extends annularly along the entire circumference of the reference circumference, i.e. the profiled contact portion 11 forms a complete contact ring. Of course, in other embodiments, the contact arc may be segmented and not continuous into a ring, or used in combination with the contact point.
With continued reference to fig. 4, in an alternative example, the profile member 10 has at least two profile contact portions 11, and at least two profile contact portions 11 are spaced apart along the limiting axis 21; wherein a radius of a reference circumference of the copying contact portion 11 close to the center 02 of the member to be measured 01 is larger than a radius of a reference circumference of the copying contact portion 11 far from the center 02 of the member to be measured 01. The arrangement of at least two of the copying contact portions 11 can be adapted to roundness detection of a plurality of different specifications of components 01 to be measured. In the example shown in fig. 4, two copying contact portions 11 are included, and for convenience of description, the copying contact portion 11 close to the center 02 of the component to be measured 01 is referred to as an outer contact portion (the copying contact portion 11 located lower in fig. 4), and the copying contact portion 11 distant from the center 02 of the component to be measured 01 is referred to as an inner contact portion (the copying contact portion 11 located upper in fig. 4). In actual use, the spherical surface with a larger diameter can be measured by contacting the outer contact portion while deepening the insertion amount of the spindle 31 (i.e., appropriately moving the spindle 31 of the dial gauge 30 downward in fig. 4). The spherical surface of the ball having a smaller diameter can be measured by contacting the inner contact portion while reducing the insertion amount of the spindle 31 (i.e., appropriately moving the spindle 31 of the dial gauge 30 upward in fig. 4). It should be noted that the number of the copying contact portions 11 is not limited to two, and may be a larger number to fit more specifications of the component 01 to be measured.
Furthermore, at least two of the profile contact portions 11 are connected in a transition manner by a profile surface 12, and the profile surface 12 faces the component 01 to be measured. In some cases, the spherical surface of the component 01 to be measured may be between the outer contact and the inner contact, i.e. slightly larger than the inner contact, but slightly smaller than the outer contact, when the spherical surface of the component 01 to be measured may come into contact with the contoured surface 12.
As shown in fig. 4, preferably, the curved surface 12 is a concave surface facing the component to be measured 01 so as to be adapted to the spherical surface of the component to be measured 01. Of course, in other embodiments, the contoured surface 12 may also be a folded surface or a flat surface, which is not limited in this embodiment.
Preferably, the limiting component 20 includes a through hole 22 formed along the limiting axis 21 and a screw hole 23 formed along the radial direction of the through hole 22, and the screw hole 23 is communicated with the through hole 22; the radial inner dimension of the through hole 22 is matched with the outer diameter of the measuring rod 31 of the dial indicator 30, and the through hole 22 is used for the measuring rod 31 of the dial indicator 30 to penetrate; the screw hole 23 is used for screwing a fixing screw 24 in so as to fix the measuring rod 31 of the dial indicator 30. Here, the radially inner dimension of the through hole 22 refers to a width of the through hole 22 in the radial direction. If the through hole 22 is circular, its radially inner dimension is the diameter of the circle. If the through hole 22 is a polygon, the radial inner dimension thereof is the diameter of an inscribed circle of the polygon. The radial inner dimension of the through hole 22 is matched with the outer diameter of the measuring rod 31 of the dial indicator 30, that is, the radial inner dimension of the through hole 22 is slightly larger than the outer diameter of the measuring rod 31, so that the measuring rod 31 can movably penetrate along the axial direction, but the radial position of the measuring rod 31 can be limited. With such a configuration, the structure of the limiting part 20 is simple, and the process of fixing the dial indicator 30 is convenient.
In the example shown in fig. 2 to 4, the profiling component 10 comprises a substantially cylindrical base body, the profiling contact portion 11 is arranged on the side of the base body facing the component 01 to be measured, the through hole 22 can be formed on the side of the base body facing away from the component 01 to be measured, and the screw hole 23 can be formed on the side wall of the base body. After being screwed into the screw hole 23, the fixing screw 24 can gradually penetrate into the screw hole 23 in the axial direction until abutting against the measuring rod 31 to press and fix the measuring rod 31 in the through hole 22.
Preferably, the limiting member 20 comprises at least two screw holes 23, and at least two screw holes 23 are circumferentially distributed around the through hole 22. For example, in the example shown in fig. 2 to 4, the limiting member 20 includes 3 screw holes 23, so as to improve the reliability of fixing the measuring rod 31.
In summary, the present invention provides a roundness measurement auxiliary fixture, which includes: a profiling component and a limiting component; the limiting part is arranged on the profiling part and used for fixing a measuring rod of the dial indicator; the profiling component comprises a profiling contact portion for contacting a component to be measured having a spherical surface; the profiling contact part is positioned on a reference circumference; the profiling contact part is used for contacting the spherical surface of the part to be measured and moving along the spherical surface of the part to be measured, so that the dial indicator is abutted against the spherical surface of the part to be measured and moves along with the spherical surface of the part to be measured.
With the configuration, the limiting component can fix the measuring rod of the dial indicator, and then the copying contact part on the reference circumference is in contact with the spherical surface of the component to be measured and moves along the spherical surface of the component to be measured, so that the dial indicator can measure the roundness of the spherical surface of the component to be measured. Whole device simple structure, the fixed reliable of amesdial, positioning accuracy is high, the simple operation, measurement of efficiency is high, is applicable to the multistation product detection of different specification models, can effectively solve the problem that the centre gripping is not firm, the location is inaccurate, detection efficiency hangs down in the product measurement process, can solve the manpower waste of product clamping process simultaneously, reduces personnel's participation time.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. A roundness measurement auxiliary jig, comprising: a profiling component and a limiting component;
the limiting part is arranged on the profiling part and used for fixing a measuring rod of the dial indicator;
the profiling component comprises a profiling contact portion for contacting a component to be measured having a spherical surface; the profiling contact part is positioned on a reference circumference;
the profiling contact part is used for contacting the spherical surface of the part to be measured and moving along the spherical surface of the part to be measured, so that the dial indicator is abutted against the spherical surface of the part to be measured and moves along with the spherical surface of the part to be measured.
2. The roundness measurement auxiliary jig of claim 1 wherein the limit member is configured to limit an extension of a spindle axis of the dial gauge along a limit axis of the limit member, and the limit axis extends along a normal direction of the spherical surface of the part to be measured when the copying contact portion is in contact with the spherical surface of the part to be measured.
3. The roundness measurement auxiliary jig of claim 1 wherein the contoured contact portion comprises contact points arranged on the reference circumference, and/or the contoured contact portion comprises a contact arc extending on the reference circumference.
4. The roundness measurement auxiliary jig according to claim 3, wherein the copying contact portion includes at least three of the contact points, or the contact arc extends annularly along the entire circumference of the reference circumference.
5. The roundness measurement auxiliary clamp according to claim 1, wherein the limiting member is configured to limit an axis of a measuring rod of the dial indicator to extend along a limiting axis of the limiting member, a plane where the reference circumference is located is perpendicular to the limiting axis, and a center of the reference circumference is located on the limiting axis.
6. The roundness measurement auxiliary clamp according to claim 1, wherein the limiting member is configured to limit an extension of a spindle axis of a dial indicator along a limiting axis of the limiting member, the profiling member has at least two profiling contact portions, and the at least two profiling contact portions are arranged at intervals along a direction of the limiting axis;
wherein a radius of a reference circumference of the contour contact portion near a center of a sphere of the part to be measured is larger than a radius of a reference circumference of the contour contact portion away from the center of the sphere of the part to be measured.
7. The roundness measurement auxiliary jig of claim 6 wherein at least two of the contoured contact portions are connected at a contoured surface transition therebetween, the contoured surface facing the member to be measured.
8. The roundness measurement auxiliary jig of claim 7 wherein the contoured surface is a curved surface that is concave toward the part to be measured.
9. The roundness measurement auxiliary clamp according to claim 1, wherein the limiting member is configured to limit an axis of a measuring rod of a dial indicator to extend along a limiting axis of the limiting member, the limiting member includes a through hole formed along the limiting axis and a screw hole formed along a radial direction of the through hole, and the screw hole is communicated with the through hole; the radial inner dimension of the through hole is matched with the outer diameter of the measuring rod of the dial indicator, and the through hole is used for the measuring rod of the dial indicator to penetrate through; the screw hole is used for screwing a fixing screw in so as to fix the measuring rod of the dial indicator.
10. The roundness measurement auxiliary jig of claim 9 wherein the stopper member includes at least two of the screw holes, the at least two screw holes being circumferentially distributed around the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122640433.1U CN216205936U (en) | 2021-10-29 | 2021-10-29 | Roundness measurement auxiliary clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122640433.1U CN216205936U (en) | 2021-10-29 | 2021-10-29 | Roundness measurement auxiliary clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216205936U true CN216205936U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122640433.1U Active CN216205936U (en) | 2021-10-29 | 2021-10-29 | Roundness measurement auxiliary clamp |
Country Status (1)
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|---|---|
| CN (1) | CN216205936U (en) |
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2021
- 2021-10-29 CN CN202122640433.1U patent/CN216205936U/en active Active
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