CN213631861U - Position degree and profile degree measuring tool - Google Patents
Position degree and profile degree measuring tool Download PDFInfo
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- CN213631861U CN213631861U CN202022442916.6U CN202022442916U CN213631861U CN 213631861 U CN213631861 U CN 213631861U CN 202022442916 U CN202022442916 U CN 202022442916U CN 213631861 U CN213631861 U CN 213631861U
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Abstract
The utility model provides a position degree and profile degree measuring tool, which comprises a datum positioning component, a workpiece pressing component and a workpiece positioning component, wherein the datum positioning component is used for positioning the datum of the workpiece on a horizontal plane and pressing and fixing the workpiece; the position degree measuring piece is positioned below the part to be measured of the workpiece and used for moving towards the part to be measured of the workpiece from the vertical direction and measuring the position degree of the part to be measured of the workpiece; and the profile tolerance measuring piece is positioned on the side edge of the part to be measured of the workpiece and used for moving up and down in the vertical direction and measuring the profile tolerance of the part to be measured of the workpiece. Adopt the benchmark locating component, position degree measurement piece and the profile tolerance measurement piece that separately set up, fix a position and fix the work piece the benchmark of work piece through benchmark locating component earlier, the measurement of position degree and profile tolerance is carried out to the portion to be measured of work piece respectively to rethread position degree measurement piece and profile tolerance measurement piece, whole measurement process is simple swift, can measure whether the straightness that hangs down of work piece is up to standard by the rapid survey, work efficiency is high, measurement accuracy is high, can realize mass production, guarantee product quality.
Description
Technical Field
The utility model relates to a measuring tool's technical field especially relates to a position degree and profile tolerance measuring tool.
Background
The position degree is usually measured using a three-coordinate measurement, and the profile degree measurement is measured using a projector or a imager. The position degree of the measured part is three-reference, but the measurement is difficult by the conventional method, and only three-coordinate measurement can be used. The conventional method of measuring the profile is to use a projector contrast measurement or a imager drawing measurement.
The three-coordinate imager has extremely low measurement efficiency, and the cost is very high because the part has large quantity and can not be sampled and inspected, and the measurement requirement can not be met within the specified time.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a position degree and profile tolerance measuring tool can solve the not enough problem of three-dimensional productivity, improves work efficiency, realizes mass production, guarantees product quality.
The utility model provides a position degree and profile tolerance measuring tool, include: the datum positioning assembly is used for positioning the datum of the workpiece on a horizontal plane and pressing and fixing the workpiece; the position degree measuring piece is positioned below the part to be measured of the workpiece and used for moving towards the part to be measured of the workpiece from the vertical direction and measuring the position degree of the part to be measured of the workpiece; and the profile tolerance measuring piece is positioned on the side edge of the part to be measured of the workpiece and used for moving up and down in the vertical direction and measuring the profile tolerance of the part to be measured of the workpiece.
By last, adopt the benchmark locating component, position degree measurement piece and the profile tolerance measurement piece that separately set up, fix a position and fix the work piece the benchmark of work piece through benchmark locating component earlier, the measurement of position degree and profile tolerance is carried out to the portion to be measured of work piece respectively to rethread position degree measurement piece and profile tolerance measurement piece, whole measurement process is simple swift, can measure whether the straightness that hangs down of work piece is up to standard by the rapid survey, work efficiency is high, measurement accuracy is high, can realize mass production, guarantee product quality.
Optionally, the datum positioning assembly includes a horizontally disposed base, and a positioning block for positioning a datum of the workpiece; the positioning block is vertical to the top surface of the base, and the top end of the positioning block is attached to the reference position of a workpiece; and the base is also provided with a pressing mechanism for pressing and attaching the horizontal reference surface of the workpiece to the top surface of the base.
By last, through the base that the level set up and the locating piece of vertical setting to fix the benchmark location of work piece at horizontal position, and fix the portion that awaits measuring of non-of work piece through hold-down mechanism, in order to prevent to carry out the straightness measuring in-process work piece displacement or skew that takes place to the portion that awaits measuring of work piece, influence the accuracy of the position degree and the profile tolerance measurement of work piece.
Optionally, the pressing mechanism includes a pressing plate for applying a downward acting force to the workpiece, a stud bolt penetrating through the pressing plate and in threaded connection with the base, and a lock nut in threaded connection with a top of the stud bolt.
Therefore, the part, not to be measured, of the workpiece is fixed between the pressing plate and the surface of the base through the pressing plate, and the workpiece is pressed tightly by applying locking force to the pressing plate through the provided stud bolt and the locking nut, so that the workpiece is prevented from rotating.
Optionally, the position degree measuring part comprises a calibration sleeve capable of moving up and down in a first vertical through hole arranged in the vertical direction of the base, and the vertical part of the part to be measured of the workpiece is located in the first vertical through hole; the calibration sleeve has a calibration hole for determining whether a vertical portion of the portion to be measured of the workpiece can be inserted thereinto.
By last, reciprocate in first vertical through-hole through the proofreading cover, as long as judge whether the vertical part of the portion of awaiting measuring of work piece enters into the proofreading hole of proofreading cover, can confirm whether the portion of awaiting measuring of work piece is the position degree qualified.
Optionally, the profile tolerance measuring part comprises a measuring mandrel capable of moving up and down in a second vertical through hole formed in the vertical direction of the base, the top of the measuring mandrel is formed into a measuring part used for judging whether a part to be measured of the workpiece blocks the measuring mandrel to move up and down, and the size of the measuring part is larger than the diameter of the second vertical through hole.
By the above, the measuring mandrel moves up and down in the second vertical through hole, and whether the profile of the part to be measured of the workpiece is qualified can be determined as long as whether the part to be measured of the workpiece blocks the up-and-down movement of the measuring mandrel is judged.
Optionally, the pressing plate is provided with a groove for avoiding the positioning block, and the bottom surface of the pressing plate is attached to the upper end surface of the workpiece.
By last, can guarantee through the setting of recess that the bottom surface of clamp plate and the up end of part are laminated, more stable compresses tightly the part.
Optionally, the utility model discloses still including be used for with the set screw of stud locking on the base.
From above, through holding screw lockable stud, prevent that stud from rotating.
Drawings
FIG. 1 is a schematic structural diagram of a workpiece to be tested;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic structural view of the position and profile measuring device of the present invention;
fig. 4 is a plan view of the position and profile measuring device of the present invention.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the application.
The position and profile measuring device of the present invention will be described in detail with reference to fig. 1 to 4, wherein the position is a position tolerance and is indicated by a symbol
And (4) showing. The position degree is an index for limiting the amount of variation of the actual position of the measured element from the ideal position. The degree of position, i.e. the extent to which the actual position of the axis or central plane of a body varies, is based on the desired position given on the pattern in assessing the accuracy of the actual element position. Surface profile is a form and position tolerance, symbolized
And (4) showing. The main index used to describe the dimensional accuracy of a surface is the profile error. The surface profile degree refers to the variation of the actual profile of the measured curved surface relative to the profile of the ideal curved surface.
Fig. 1 and 2 show the position and profile requirements of a workpiece (part) to be measured, wherein the measurement reference of the part is A, B, C, and reference B is the center line of the hole.
Fig. 3 shows the utility model discloses an overall schematic diagram of position degree and profile tolerance measuring tool, including the benchmark locating component, position degree measurement and the profile tolerance measurement that separately set up, wherein the benchmark locating component is used for fixing workpiece 60 (part)'s benchmark location at the horizontal plane and compressing tightly the work piece fixedly, and this benchmark locating component is including placing base 10 on the horizontal plane, the locating piece 50 that is used for fixing a position the benchmark of work piece, and locating piece 50 is placed perpendicular to the top surface of base 10, and the top of locating piece 50 fits in the benchmark position of work piece to fix a position the benchmark of work piece.
In addition, the base 10 is further provided with a pressing mechanism for pressing and attaching the horizontal reference surface of the workpiece to the top surface of the base 10, and the pressing mechanism includes a pressing plate 41 for applying a downward force to the workpiece, a stud bolt 42 penetrating through the pressing plate 41 and screwed to the base 10, and a lock nut 43 screwed to the top of the stud bolt 42. Wherein, the middle of the pressing plate 41 is provided with a groove to avoid the positioning block 50, so that the bottom surface of the pressing plate 41 is attached to the upper end surface of the part to press the part. In addition, a set screw 44 is arranged in the base 10 at the bottom of the stud 42, and the set screw 44 is used for locking the stud 42 to prevent the stud 42 from rotating, so that the pressing plate 41 is locked to press the workpiece better through the matching of the locking nut 43 and the stud 42.
The utility model provides a position degree measurement piece and profile tolerance measurement piece and the supporting use of benchmark locating component, position degree measurement piece is located the below of the portion of awaiting measuring of work piece, be used for from vertical direction towards the portion of awaiting measuring of work piece remove and carry out the position degree measurement to the portion of awaiting measuring of work piece, position degree measurement piece is including the proofreading cover 20 that can reciprocate in the first vertical through-hole of the vertical direction setting of base 10, the vertical part of the portion of awaiting measuring of work piece is located this first vertical through-hole, and proofreading cover 20 has the proofreading hole that whether the vertical part of the portion of awaiting measuring that is used for judging the work piece can insert it in. In an embodiment, for the workpiece 60 to be measured of the present invention, the diameter of the pin (vertical portion) of the portion to be measured of the workpiece is 4.31mm, the position degree is 0.254mm, when the position degree of the part is at the limit, the maximum distance of the inclination of the pin is 0.127mm, and the size of the measurement portion (calibration hole) of the calibration sleeve 20 is 4.5mm in consideration of the error of the measuring tool and the measurement0 +0.02(the difference between the diameter phi of the pin being 4.31mm and phi 4.5mm in the figure is the dimensional value of the position degree). The part is clamped according to the requirement, the part is pressed by the pressing plate 41, the locking nut 43 is locked, the reference A, B, C is attached to the base 10 and the positioning block 50 respectively, the reference positioning of the part is realized, the calibrating sleeve 20 is pushed to the position of the pin to be measured, and when the pin enters the calibrating hole of the calibrating sleeve 20 without blocking, the position degree is qualified.
Additionally, the utility model discloses a profile tolerance measuring part is located the side of the portion of awaiting measuring of work piece for reciprocate in vertical direction and carry out the profile tolerance to the portion of awaiting measuring of work piece and measure. The profile tolerance measuring part comprises a measuring mandrel 70 which can move up and down in a second vertical through hole arranged in the vertical direction of the base 10, the top of the measuring mandrel 70 is formed into a measuring part which is used for judging whether a part to be measured of the workpiece blocks the measuring mandrel 70 to move up and down, and the size of the measuring part is larger than the diameter of the second vertical through hole. In a specific embodiment, the diameter of the measuring portion of the measuring mandrel 70 is 11mm, the profile tolerance thereof is 0.254mm, and when the profile of the part is at the maximum limit, the measuring mandrel 70 can completely pass through without blocking, that is, the profile tolerance is qualified.
The utility model discloses a separately the benchmark locating component that sets up, position degree measurement piece and profile tolerance measurement piece, fix a position and fix the work piece through the benchmark locating component to the benchmark of work piece earlier, rethread position degree measurement piece and profile tolerance measurement piece carry out position degree and profile tolerance measurement to the portion of awaiting measuring of work piece, guarantee the horizontal benchmark laminating of work piece at the top surface of base at the measurement process, and adopt locating piece 50 to fix a position the position of work piece, rethread proofreading cover 20 and measurement dabber 70 can carry out position degree and profile tolerance measurement to the work piece, whole measurement process is simple swift, can measure the straightness that hangs down of work piece fast whether up to standard, high work efficiency, the measuring accuracy is high, can realize mass production, guarantee product quality.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. A position and profile measuring tool, comprising:
the datum positioning assembly is used for positioning the datum of the workpiece on a horizontal plane and pressing and fixing the workpiece;
the position degree measuring piece is positioned below the part to be measured of the workpiece and used for moving towards the part to be measured of the workpiece from the vertical direction and measuring the position degree of the part to be measured of the workpiece;
and the profile tolerance measuring piece is positioned on the side edge of the part to be measured of the workpiece and used for moving up and down in the vertical direction and measuring the profile tolerance of the part to be measured of the workpiece.
2. The apparatus of claim 1, wherein the datum-locating assembly comprises a horizontally disposed base, a datum-locating block for locating a datum of the workpiece;
the positioning block is vertical to the top surface of the base, and the top end of the positioning block is attached to the reference position of a workpiece;
and the base is also provided with a pressing mechanism for pressing and attaching the horizontal reference surface of the workpiece to the top surface of the base.
3. The apparatus of claim 2, wherein the pressing mechanism comprises a pressing plate for applying a downward force to the workpiece, a stud bolt passing through the pressing plate and threadedly coupled to the base, and a lock nut threadedly coupled to a top of the stud bolt.
4. The tool of claim 2, wherein the position degree measuring member includes a proof sleeve movable up and down in a first vertical through hole provided in a vertical direction of the base, and a vertical portion of the portion to be measured of the workpiece is located in the first vertical through hole;
the calibration sleeve has a calibration hole for determining whether a vertical portion of the portion to be measured of the workpiece can be inserted thereinto.
5. The apparatus according to claim 2, wherein the profile measuring member comprises a measuring mandrel that can move up and down in a second vertical through hole provided in the vertical direction of the base, a top portion of the measuring mandrel is formed as a measuring portion for determining whether the portion to be measured of the workpiece blocks the up and down movement of the measuring mandrel, and the measuring portion has a size larger than a diameter of the second vertical through hole.
6. The apparatus of claim 3, wherein the pressing plate has a groove for avoiding the positioning block, and a bottom surface of the pressing plate is disposed to fit with an upper end surface of the workpiece.
7. The apparatus of claim 3, further comprising a set screw for locking the stud to the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022442916.6U CN213631861U (en) | 2020-10-28 | 2020-10-28 | Position degree and profile degree measuring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022442916.6U CN213631861U (en) | 2020-10-28 | 2020-10-28 | Position degree and profile degree measuring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213631861U true CN213631861U (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022442916.6U Active CN213631861U (en) | 2020-10-28 | 2020-10-28 | Position degree and profile degree measuring tool |
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|---|---|
| CN (1) | CN213631861U (en) |
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2020
- 2020-10-28 CN CN202022442916.6U patent/CN213631861U/en active Active
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