CN210741416U - Positioning fixture for workpiece measurement - Google Patents
Positioning fixture for workpiece measurement Download PDFInfo
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- CN210741416U CN210741416U CN201921997053.XU CN201921997053U CN210741416U CN 210741416 U CN210741416 U CN 210741416U CN 201921997053 U CN201921997053 U CN 201921997053U CN 210741416 U CN210741416 U CN 210741416U
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Abstract
The utility model discloses a work piece is positioning fixture for measurement, include the base plate and install the fixed block on the base plate, still have a supporting shoe, this supporting shoe is located between work piece and the fixed block, the lower surface of supporting shoe and the upper surface contact of fixed block to with fixed block fixed connection, this supporting shoe upper surface has two at least bellyings, thereby forms a plurality of depressed part on the supporting shoe, the bellyings upper surface is connected with the work piece contact, the depressed part supplies the work piece embedding, be located the fixed block both sides on the base plate and be provided with a plurality of erection columns respectively, install a spacing clamp plate on the erection column, it has a plurality of spacing holes to open on the supporting shoe, and this spacing downthehole has inserted a spacer pin. The utility model discloses a clamping can be examined the three face of work piece, has both improved the efficiency that detects, has practiced thrift the time, has still realized the three-dimensional location to the work piece, avoids the work piece to take place the skew, further strengthens precision and stability to the work piece detection.
Description
Technical Field
The utility model relates to a work piece is positioning fixture for measurement belongs to the machining and measures the field.
Background
The checking tool is a special measuring tool specially made by industrial production enterprises for controlling various mechanical sizes of products, and is suitable for mass production of products, such as automobile parts and the like. At present, a three-coordinate measuring instrument is a commonly used measuring instrument for an automobile checking fixture, can quickly and conveniently measure part size parameters which cannot be measured by some common measuring instruments, and the existing three-coordinate measuring machine enables a measuring head to move in three coordinate directions simultaneously through three main bodies which vertically move in an X axis, a Y axis and a Z axis, so that the size parameters such as the shape, the outline and the like of an object can be accurately detected through coordinates of a plurality of points.
The existing clamping jig matched with the three-coordinate measuring instrument is only used for upwards positioning the surface to be detected of a workpiece and simply positioning the surface, however, the existing workpiece is usually required to be detected on two surfaces or a plurality of surfaces, so that the workpiece is required to be clamped for many times, time is wasted, and the detection accuracy is reduced due to errors among multiple clamping.
Disclosure of Invention
The utility model aims at providing a work piece is positioning fixture for measurement, this work piece is positioning fixture for measurement has realized that a clamping can inspect the three face of work piece, has both improved the efficiency that detects, has practiced thrift the time, has still realized the three-dimensional location to the work piece, avoids the work piece to take place the skew, further strengthens precision and stability to the work piece detection.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a positioning clamp for workpiece measurement comprises a substrate and a fixed block arranged on the substrate, wherein the lower surface of the fixed block is in contact connection with the upper surface of the substrate and is fixedly connected with the substrate;
the support block is positioned between the workpiece and the fixed block, the lower surface of the support block is in contact with the upper surface of the fixed block and is fixedly connected with the fixed block, the upper surface of the support block is provided with at least two convex parts, so that a plurality of concave parts are formed on the support block, the upper surfaces of the convex parts are in contact connection with the workpiece, and the concave parts are used for the workpiece to be embedded;
a plurality of mounting columns are respectively arranged on the base plate and positioned on two sides of the fixed block, a limiting pressure plate is mounted on each mounting column, one end of each limiting pressure plate is connected with the corresponding mounting column, and the other end of each limiting pressure plate is embedded into a notch part on the workpiece and is in abutting contact with the workpiece positioned above the corresponding protruding part;
the end of the limiting pressure plate, which is contacted with the workpiece, is provided with a cylindrical pressure head part, the arc surface of the cylindrical pressure head part is contacted and connected with the workpiece, the supporting block is provided with a plurality of limiting holes, a limiting pin is inserted into the limiting holes, and one side surface of the limiting pin is contacted and connected with the workpiece.
The further improved scheme in the technical scheme is as follows:
1. in the above scheme, the cylindrical head pressing part is coated with a rubber layer.
2. In the scheme, the number of the limiting pins is 2-5, and the limiting pins are located on the same side of the workpiece.
3. In the scheme, the base plate is provided with a plurality of threaded holes at equal intervals, and the bottom surface of the fixed block is provided with mounting holes corresponding to the threaded holes.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:
1. the utility model discloses work piece is positioning fixture for measurement, it has realized that a clamping can be to the three face of work piece inspect, has both improved the efficiency that detects, has practiced thrift the time, avoids the error that the repeated many times clamping of work piece brought again, has improved the precision and the accuracy that detect, has still saved the calibration process after the clamping at every turn simultaneously, has further practiced thrift the time that detects, has improved detection efficiency.
2. The utility model discloses positioning fixture for workpiece measurement, it still has a supporting shoe, and this supporting shoe is located between work piece and the fixed block, the lower surface of supporting shoe and the upper surface contact of fixed block, and with fixed connection of fixed block, this supporting shoe upper surface has at least two bellyings, thereby form a plurality of depressed parts on the supporting shoe, the bellyings upper surface is connected with the work piece contact, the depressed part supplies the work piece embedding, the setting of supporting shoe and its upper surface depressed part, bellyings, both convenient to dismantle the installation, provide the support of high matching degree for the work piece again, guaranteed the stability and the precision of work piece clamping, be convenient for to the detection of work piece and guarantee the precision of detection; in addition, a plurality of mounting columns are respectively arranged on the substrate and positioned at two sides of the fixed block, a limiting pressure plate is mounted on each mounting column, one end of each limiting pressure plate is connected with the corresponding mounting column, the other end of each limiting pressure plate is embedded into the notch part on the workpiece and is in abutting contact with the workpiece positioned above the corresponding bulge part, and the limiting pressure plates and the bulge parts on the supporting blocks are matched to act, so that the workpiece is prevented from being damaged due to overlarge clamping force while the workpiece clamping stability is ensured; furthermore, one end of the limiting pressure plate, which is contacted with the workpiece, is provided with a cylindrical pressure head part, the arc surface of the cylindrical pressure head part is contacted and connected with the workpiece, and the arrangement of the cylindrical pressure head part further ensures the elastic clamping of the limiting pressure plate on the workpiece, so that the workpiece is prevented from being damaged due to overlarge clamping force; in addition, a plurality of limiting holes are formed in the supporting block, a limiting pin is inserted into each limiting hole, one side surface of each limiting pin is in contact connection with the workpiece, and the limiting pins are arranged and matched with the pressing plate, so that the three-dimensional positioning of the workpiece is realized, the workpiece is prevented from being deviated, and the precision and the stability of workpiece detection are further enhanced.
Drawings
FIG. 1 is a schematic structural view of a positioning fixture for workpiece measurement according to the present invention;
FIG. 2 is a schematic view of a local structure of the positioning fixture for measuring workpieces of the present invention;
fig. 3 is the utility model discloses the work piece is positioning fixture local structure enlarged view for measurement.
In the above drawings: 1. a substrate; 2. a fixed block; 4. a support block; 401. a boss portion; 402. a recessed portion; 5. a workpiece; 6. mounting a column; 7. a limiting pressure plate; 701. a cylindrical press head portion; 8. a spacing pin; 11. a threaded bore.
Detailed Description
Example 1: a positioning fixture for workpiece measurement is used for a workpiece, the workpiece is provided with four surfaces, the area of the upper surface and the area of the lower surface are far smaller than the area of the left surface and the right surface, the positioning fixture comprises a substrate 1 and a fixed block 2 arranged on the substrate 1, and the lower surface of the fixed block 2 is in contact connection with the upper surface of the substrate 1 and is fixedly connected with the substrate 1;
the supporting block 4 is positioned between the workpiece 5 and the fixed block 2, the lower surface of the supporting block 4 is in contact with the upper surface of the fixed block 2 and is fixedly connected with the fixed block 2, the upper surface of the supporting block 4 is provided with at least two convex parts 401, so that a plurality of concave parts 402 are formed on the supporting block 4, the upper surfaces of the convex parts 401 are in contact connection with the workpiece 5, and the concave parts 402 are used for the workpiece 5 to be embedded;
a plurality of mounting columns 6 are respectively arranged on the substrate 1 and positioned at two sides of the fixed block 2, a limiting pressure plate 7 is arranged on each mounting column 6, one end of each limiting pressure plate 7 is connected with the corresponding mounting column 6, and the other end of each limiting pressure plate 7 is embedded into the corresponding notch 501 in the workpiece 5 and is in abutting contact with the workpiece 5 positioned above the corresponding protruding portion 401;
the end of the limiting pressure plate 7 contacting the workpiece 5 is provided with a cylindrical pressure head part 701, the arc surface of the cylindrical pressure head part 701 contacts and is connected with the workpiece 5, the supporting block 4 is provided with a plurality of limiting holes, a limiting pin 8 is inserted into the limiting holes, and one side surface of the limiting pin 8 contacts and is connected with the workpiece 5.
The cylindrical press head part 701 is coated with a rubber layer; the number of the limiting pins 8 is 2, and the limiting pins are all positioned on the same side of the workpiece 5.
Example 2: a positioning fixture for workpiece measurement is used for a workpiece, the workpiece is provided with four surfaces, the area of the upper surface and the area of the lower surface are far smaller than the area of the left surface and the right surface, the positioning fixture comprises a substrate 1 and a fixed block 2 arranged on the substrate 1, and the lower surface of the fixed block 2 is in contact connection with the upper surface of the substrate 1 and is fixedly connected with the substrate 1;
the supporting block 4 is positioned between the workpiece 5 and the fixed block 2, the lower surface of the supporting block 4 is in contact with the upper surface of the fixed block 2 and is fixedly connected with the fixed block 2, the upper surface of the supporting block 4 is provided with at least two convex parts 401, so that a plurality of concave parts 402 are formed on the supporting block 4, the upper surfaces of the convex parts 401 are in contact connection with the workpiece 5, and the concave parts 402 are used for the workpiece 5 to be embedded;
a plurality of mounting columns 6 are respectively arranged on the substrate 1 and positioned at two sides of the fixed block 2, a limiting pressure plate 7 is arranged on each mounting column 6, one end of each limiting pressure plate 7 is connected with the corresponding mounting column 6, and the other end of each limiting pressure plate 7 is embedded into the corresponding notch 501 in the workpiece 5 and is in abutting contact with the workpiece 5 positioned above the corresponding protruding portion 401;
the end of the limiting pressure plate 7 contacting the workpiece 5 is provided with a cylindrical pressure head part 701, the arc surface of the cylindrical pressure head part 701 contacts and is connected with the workpiece 5, the supporting block 4 is provided with a plurality of limiting holes, a limiting pin 8 is inserted into the limiting holes, and one side surface of the limiting pin 8 contacts and is connected with the workpiece 5.
The number of the limiting pins 8 is 4, and the limiting pins are all positioned on the same side of the workpiece 5; a plurality of threaded holes 11 are arranged on the base plate 1 at equal intervals, and mounting holes corresponding to the threaded holes 11 are formed in the bottom surface of the fixing block 2.
When the positioning fixture for workpiece measurement is adopted, three surfaces of a workpiece can be inspected by one-time clamping, so that the detection efficiency is improved, the time is saved, errors caused by repeated clamping of the workpiece are avoided, the detection precision and accuracy are improved, meanwhile, the calibration process after each clamping is also omitted, the detection time is further saved, and the detection efficiency is improved;
in addition, the supporting block, the concave part and the convex part on the supporting block are convenient to disassemble and assemble, and provide high-matching-degree support for the workpiece, so that the stability and the precision of workpiece clamping are ensured, and the workpiece is convenient to detect and the detection precision is ensured;
in addition, the limiting pressure plate and the protruding parts on the supporting block are matched to act, so that the workpiece is prevented from being damaged due to overlarge clamping force while the workpiece clamping stability is ensured; furthermore, the arrangement of the cylindrical pressure head part further ensures the elastic clamping of the limiting pressure plate on the workpiece, and avoids the damage to the workpiece caused by overlarge clamping force; in addition, the arrangement of the limiting pin is matched with the pressing plate, so that the three-dimensional positioning of the workpiece is realized, the workpiece is prevented from deviating, and the precision and the stability of workpiece detection are further enhanced.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (4)
1. The utility model provides a positioning fixture for workpiece measurement which characterized in that: the device comprises a substrate (1) and a fixed block (2) arranged on the substrate (1), wherein the lower surface of the fixed block (2) is in contact connection with the upper surface of the substrate (1) and is fixedly connected with the substrate (1);
the workpiece fixing device is characterized by further comprising a supporting block (4), the supporting block (4) is located between the workpiece (5) and the fixing block (2), the lower surface of the supporting block (4) is in contact with the upper surface of the fixing block (2) and is fixedly connected with the fixing block (2), the upper surface of the supporting block (4) is provided with at least two protruding parts (401), so that a plurality of concave parts (402) are formed in the supporting block (4), the upper surfaces of the protruding parts (401) are in contact connection with the workpiece (5), and the workpiece (5) is embedded into the concave parts (402);
a plurality of mounting columns (6) are respectively arranged on the substrate (1) and positioned on two sides of the fixing block (2), a limiting pressing plate (7) is mounted on each mounting column (6), one end of each limiting pressing plate (7) is connected with each mounting column (6), and the other end of each limiting pressing plate is embedded into a notch part (501) on the workpiece (5) and is in abutting contact with the workpiece (5) positioned above the protruding part (401);
one end of the limiting pressure plate (7) in contact with the workpiece (5) is provided with a cylindrical pressure head part (701), the arc-shaped surface of the cylindrical pressure head part (701) is in contact connection with the workpiece (5), the supporting block (4) is provided with a plurality of limiting holes, a limiting pin (8) is inserted into each limiting hole, and one side surface of each limiting pin (8) is in contact connection with the workpiece (5).
2. The positioning jig for workpiece measurement according to claim 1, characterized in that: the cylindrical press head part (701) is coated with a rubber layer.
3. The positioning jig for workpiece measurement according to claim 1, characterized in that: the number of the limiting pins (8) is 2-5, and the limiting pins are located on the same side of the workpiece (5).
4. The positioning jig for workpiece measurement according to claim 1, characterized in that: a plurality of threaded holes (11) are arranged on the base plate (1) at equal intervals, and mounting holes corresponding to the threaded holes (11) are formed in the bottom surface of the fixing block (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921997053.XU CN210741416U (en) | 2019-11-19 | 2019-11-19 | Positioning fixture for workpiece measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921997053.XU CN210741416U (en) | 2019-11-19 | 2019-11-19 | Positioning fixture for workpiece measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210741416U true CN210741416U (en) | 2020-06-12 |
Family
ID=71111914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921997053.XU Active CN210741416U (en) | 2019-11-19 | 2019-11-19 | Positioning fixture for workpiece measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210741416U (en) |
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2019
- 2019-11-19 CN CN201921997053.XU patent/CN210741416U/en active Active
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