CN213081190U - Positioning tool for expansion cylinder precision measurement - Google Patents
Positioning tool for expansion cylinder precision measurement Download PDFInfo
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- CN213081190U CN213081190U CN202021247380.6U CN202021247380U CN213081190U CN 213081190 U CN213081190 U CN 213081190U CN 202021247380 U CN202021247380 U CN 202021247380U CN 213081190 U CN213081190 U CN 213081190U
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- expansion cylinder
- precision measurement
- positioning tool
- cylindrical column
- cylinder precision
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Abstract
The utility model discloses a positioning tool for expansion cylinder precision measurement, which comprises a cylindrical column, wherein N waist-shaped through grooves are longitudinally and uniformly formed on the outer circumferential surface of the cylindrical column, and N ribs are correspondingly formed; n is a multiple of 3 or 4. The utility model discloses a location frock for expansion cylinder precision measurement can be used to the location frock of transition clamping, and this location frock cooperation six-jaw chuck or four-jaw chuck use, not only fix a position accurate, convenient to use moreover. The utility model discloses a reducible expanding cylinder's measuring time reduces because of the measuring error that the clamping location produced.
Description
Technical Field
The utility model relates to a location frock technical field, concretely relates to location frock for expansion cylinder precision measurement.
Background
When a cylindrical instrument is used for precisely measuring a thin-wall expansion cylinder, two V-shaped irons are often used for positioning and clamping the outer circular surface at the lower end of a flange of the expansion cylinder, but the method has poor positioning, and during detection, the leveling and centering are slow or the centering cannot be performed, so that the detection time is too long, and the measurement result is inaccurate.
SUMMERY OF THE UTILITY MODEL
The utility model provides a location frock for expansion cylinder precision measurement can solve above-mentioned technical defect.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a positioning tool for precision measurement of an expansion cylinder comprises a cylindrical column, wherein N waist-shaped through grooves are uniformly formed in the outer circumferential surface of the cylindrical column in the longitudinal direction, and N ribs are correspondingly formed; n is a multiple of 3 or 4.
Further, the cylindrical column is made of aluminum alloy.
Furthermore, the outer circle and the inner hole coaxiality error of the cylindrical column are in a micron level, the roughness of the inner hole and the outer circle of the cylindrical column is Ra0.8, and the size precision of the inner hole of the cylindrical column is within the IT7 level.
According to the above technical scheme, the utility model discloses a location frock for expansion cylinder precision measurement can be used to the location frock of transition clamping, and this location frock cooperation six-jaw chuck or four-jaw chuck use, not only fix a position accurate, convenient to use moreover. The utility model discloses a reducible expanding cylinder's measuring time reduces because of the measuring error that the clamping location produced.
Drawings
Fig. 1 is a schematic structural view of the utility model comprising six waist-shaped grooves;
fig. 2 is a schematic structural view of the utility model comprising eight waist-shaped grooves;
fig. 3 is a schematic view of the structure of the usage state of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
As shown in fig. 1 and 2, the positioning tool for the expansion cylinder precision measurement is a cylindrical column 1, six or eight waist-shaped through grooves 2 are uniformly distributed on the outer circular surface, and six or eight ribs 3 are formed on the outer circular surface and used for clamping a six-jaw chuck or a four-jaw chuck.
The number of the kidney-shaped through grooves 2 is 3 or 4 times, for example, 12 positions can also be adopted.
The cylindrical column 1 is made of aluminum alloy.
The coaxiality error between the outer circle and the inner hole of the cylindrical column 1 is in a micron level, the roughness of the inner hole and the outer circle is Ra0.8, and the size precision of the inner hole is within the IT7 level, so that the influence of the size error and the form and position error on the positioning of a measured workpiece is reduced.
As shown in figure 3, because the expansion cylinder is a thin-wall part, the outer circle of the thin wall is designed with an inclined plane close to the flange end, when the cylindricity error of the inner hole is accurately measured, the positioning tool is used for positioning, specifically, a six-jaw chuck or a four-jaw chuck is used for clamping on the rib of the positioning tool, the rib is clamped tightly, the thin-wall end of the expansion cylinder is placed into the inner hole of the positioning tool, the outer circle of the thin-wall end is positioned through the inner hole, and the rib holds the inclined plane tightly for positioning. The positioning tool is reliable in use, accurate in positioning and convenient to operate.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. The utility model provides a location frock for expansion cylinder precision measurement which characterized in that: the device comprises a cylindrical column (1), wherein N waist-shaped through grooves (2) are uniformly formed in the outer circumferential surface of the cylindrical column (1) in the longitudinal direction, and N ribs (3) are correspondingly formed;
n is a multiple of 3 or 4.
2. The positioning tool for the expansion cylinder precision measurement according to claim 1, characterized in that: n is 6.
3. The positioning tool for the expansion cylinder precision measurement according to claim 1, characterized in that: n is 8.
4. The positioning tool for the expansion cylinder precision measurement according to claim 1, characterized in that: n is 12.
5. The positioning tool for the expansion cylinder precision measurement according to claim 1, characterized in that: the cylindrical column (1) is made of aluminum alloy.
6. The positioning tool for the expansion cylinder precision measurement according to claim 1, characterized in that: the coaxiality error between the outer circle and the inner hole of the cylindrical column (1) is in a micron level.
7. The positioning tool for the expansion cylinder precision measurement of claim 6, characterized in that: the roughness of the inner hole and the outer circle of the cylindrical column (1) is Ra0.8.
8. The positioning tool for the expansion cylinder precision measurement according to claim 7, characterized in that: the inner hole size precision of the cylindrical column (1) is within IT7 level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021247380.6U CN213081190U (en) | 2020-06-30 | 2020-06-30 | Positioning tool for expansion cylinder precision measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021247380.6U CN213081190U (en) | 2020-06-30 | 2020-06-30 | Positioning tool for expansion cylinder precision measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213081190U true CN213081190U (en) | 2021-04-30 |
Family
ID=75622863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021247380.6U Active CN213081190U (en) | 2020-06-30 | 2020-06-30 | Positioning tool for expansion cylinder precision measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213081190U (en) |
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2020
- 2020-06-30 CN CN202021247380.6U patent/CN213081190U/en active Active
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