CN204085369U - Geometric tolerances measuring instrument - Google Patents
Geometric tolerances measuring instrument Download PDFInfo
- Publication number
- CN204085369U CN204085369U CN201420538221.XU CN201420538221U CN204085369U CN 204085369 U CN204085369 U CN 204085369U CN 201420538221 U CN201420538221 U CN 201420538221U CN 204085369 U CN204085369 U CN 204085369U
- Authority
- CN
- China
- Prior art keywords
- web member
- geometric tolerances
- measuring instrument
- dial gauge
- guide rail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 description 10
- 238000005259 measurement Methods 0.000 description 9
- 230000001186 cumulative effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Abstract
The utility model discloses a kind of geometric tolerances measuring instrument, comprising: two measured object supports, bracing frame 2, dial gauge 1, guide rail 3, web members 6; Described two measured object stentplacements on surface level 7, and are provided with bracing frame 2 between the two; Support frame as described above 2 is provided with two guide rails be parallel to each other 3, and guide rail 3 is parallel with surface level 7; Be provided with web member 6 between described two guide rails 3, web member 6 can horizontal slip on guides 3; The two ends of described web member 6 are respectively equipped with dial gauge 1, and the side head of two dial gauges 1 is oppositely arranged.
Description
Technical field
The utility model relates to surveying instrument field, particularly a kind of geometric tolerances measuring instrument measuring different geometric tolerances.
Background technology
When finishing axial workpiece, the geometric tolerances of part must be known.The measuring method of existing axial workpiece mainly contains two kinds, one is that axial workpiece is measured immediately after finishing on lathe, because the axial workpiece measured is fixed, and the linearity of machine tool guideway is high, this measuring method precision comparison is high, but due to the existence of machining deformation, when axial workpiece takes off from lathe, also need double measurement to check.Therefore, this method is only applicable to the detection of production.Second method is fixed by axial workpiece, with dial gauge back and forth dragging obtain the numerical value of geometric tolerances.Because the method needs artificial dragging, without guide rail locking degree of freedom, the position of measurement can not be ensured on the same line, and artificial dragging can cause the level height of measurement uncontrollable.Although this method measure fairly simple, save time, measuring cost low, all there is larger measuring error in each link when measuring, and the cumulative errors measuring the geometric tolerances obtained is also very large.
Geometric tolerances measuring instrument should meet can measure different geometric tolerances.Containing the circularity that same xsect real profile and semidiameter are the distance f between minimum two concentric circless as measured, measuring and containing real surface and semidiameter is the cylindricity of the semidiameter f between minimum two coaxial circles cylinders, also having right alignment, symmetry etc.But all there is different technological deficiencies in above-mentioned two kinds of measuring methods, cannot meet the needs of measurement.Therefore, urgently a kind of geometric tolerances measuring instrument.
Summary of the invention
The purpose of this utility model is: in order to the measuring technique solving existing axial workpiece is complicated, cumulative errors is large, geometric tolerances measure the technical matterss such as kind is few, a kind of geometric tolerances measuring instrument is provided, adopt the measuring method of guide tracked upper and lower pair of dial gauge, its structure is simple, easy to use, the geometric tolerances kind measured is many and measuring accuracy is high, can be widely used in field of machining.
For achieving the above object, the technical solution adopted in the utility model is: provide a kind of geometric tolerances measuring instrument, comprising: two measured object supports, bracing frame 2, dial gauge 1, guide rail 3, web members 6; Described two measured object stentplacements on surface level 7, and are provided with bracing frame 2 between the two; Support frame as described above 2 is provided with two guide rails be parallel to each other 3, and guide rail 3 is parallel with surface level 7; Be provided with web member 6 between described two guide rails 3, web member 6 can horizontal slip on guides 3; The two ends of described web member 6 are respectively equipped with dial gauge 1, and the side head of two dial gauges 1 is oppositely arranged.
Wherein: support frame as described above 2 lower end is provided with height adjustment bolt.
Wherein: described measured object support is V-type frame 5.
Wherein: described web member 6 two ends are provided with pilot hole, and described dial gauge 1 is arranged on web member 6 by pilot hole.
The beneficial effects of the utility model are: two guide rail parallels of the present utility model are arranged on bracing frame, the depth of parallelism of guide rail and workpiece when ensure that measurement, two dial gauges are arranged on web member, and the side head of dial gauge is oppositely arranged, web member is arranged on guide rail, only measure on the axis of measuring workpieces, improve the precision of measurement, solve existing tolerance measurement instrument only with hand drag that dial gauge is measured, the linearity difference measured and the problem such as cumulative errors is larger.Meanwhile, volume of the present utility model is little, easy to use, and the geometric tolerances kind of measurement is many, has certain practical value and application prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model geometric tolerances measuring instrument.
Fig. 2 is the implementation schematic diagram of the utility model geometric tolerances measuring instrument.
Fig. 3 is the measuring for the coaxiality error schematic diagram of embodiment 1.
Accompanying drawing identifies: 1 one dial gauges, 2-bracing frame, 3-guide rail, 4-workpiece, 5-V type frame, 6-web member, 7-surface level.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
With reference to Fig. 1, a kind of geometric tolerances measuring instrument of the utility model, comprising: two measured object supports, bracing frame 2, dial gauge 1, guide rail 3, web members 6; Described two measured object stentplacements on surface level 7, and are provided with bracing frame 2 between the two; Support frame as described above 2 is provided with two guide rails be parallel to each other 3, and guide rail 3 is parallel with surface level 7; Be provided with web member 6 between described two guide rails 3, web member 6 can horizontal slip on guides 3; The two ends of described web member 6 are respectively equipped with dial gauge 1, and the side head of two dial gauges 1 is oppositely arranged.
Support frame as described above 2 lower end is provided with height adjustment bolt.
Described measured object support is V-type frame 5.
Described web member 6 two ends are provided with pilot hole, and described dial gauge 1 is arranged on web member 6 by pilot hole.
Workflow of the present utility model is: first, and the workpiece 4 measured is put on V-type frame 5, by the height of height adjustment bolt adjustment bracing frame 2, workpiece 4 is placed in the correct position between two dial gauges, makes dial gauge 1 show reading; Then, mobile link part 6, makes its smooth sliding on guides 3, and at this moment two dial gauges 1 can show reading change; Finally, rotational workpieces 4, selects some plain lines to measure.Also two dial gauges 1 can be still in a certain position, rotate measured workpiece 4, two dial gauges 1 and can show reading change equally, then move dial gauge 1, select some positions to measure.The reading change of two dial gauges 1 reflects tested part geometric tolerances.In actual use, the measuring method be applicable to should be selected according to the difference of geometric tolerances measured.
Support frame as described above 2 supporting guide 3, ensure that the depth of parallelism of two guide rails, and two pilot holes on web member 6 can ensure the right alignment of two dial gauge 1 gauge heads.By the connection of two guide rails 3 with web member 6, ensure that web member 6 can drive two dial gauges 1 to move on guides 3, limit five degree of freedom that dial gauge rotates along x-axis, moves rotation, moves rotation along z-axis along y-axis, two dial gauges 1 making gauge head coaxial are only smooth on two guide rails 3 to slide.
Embodiment 1
To the measurement of workpiece right alignment
With reference to Fig. 2-3, measured workpiece is certain Step Shaft, measures the coaxiality error of its interlude φ d to the common axis that two ends φ d1 axis forms.First Step Shaft is put on V-type frame 5, the height of adjustment bracing frame 2, Step Shaft is made to be placed in correct position between two dial gauges 1, dial gauge 1 shows reading, then the two plain lines up and down along vertical axis cross section are measured, record the absolute value of the difference of reading of two indication points, the maximal value of getting each measuring point difference of reading absolute value is the coaxiality error of this shaft section axis simultaneously.Rotate Step Shaft, measure several shaft sections as stated above, get the coaxiality error of wherein maximum error amount as this workpiece.
Above content is the further description done the utility model in conjunction with optimal technical scheme, can not assert that the concrete enforcement of invention is only limitted to these explanations.Concerning the utility model person of an ordinary skill in the technical field, under the prerequisite not departing from design of the present utility model, simple deduction and replacement can also be made, all should be considered as protection domain of the present utility model.
Claims (4)
1. a geometric tolerances measuring instrument, is characterized in that: comprising: two measured object supports, bracing frame (2), dial gauge (1), guide rail (3), web members (6); Described two measured object stentplacements on surface level (7), and are provided with bracing frame (2) between the two; Support frame as described above (2) is provided with two guide rails be parallel to each other (3), and guide rail (3) is parallel with surface level (7); Be provided with web member (6) between described two guide rails (3), web member (6) can in the upper horizontal slip of guide rail (3); The two ends of described web member (6) are respectively equipped with dial gauge (1), and the side head of two dial gauges (1) is oppositely arranged.
2. geometric tolerances measuring instrument according to claim 1, is characterized in that: support frame as described above (2) lower end is provided with height adjustment bolt.
3. geometric tolerances measuring instrument according to claim 1, is characterized in that: described measured object support is V-type frame (5).
4. geometric tolerances measuring instrument according to claim 1, is characterized in that: described web member (6) two ends are provided with pilot hole, and described dial gauge (1) is arranged on web member (6) by pilot hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420538221.XU CN204085369U (en) | 2014-09-11 | 2014-09-11 | Geometric tolerances measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420538221.XU CN204085369U (en) | 2014-09-11 | 2014-09-11 | Geometric tolerances measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204085369U true CN204085369U (en) | 2015-01-07 |
Family
ID=52178072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420538221.XU Expired - Fee Related CN204085369U (en) | 2014-09-11 | 2014-09-11 | Geometric tolerances measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204085369U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625115A (en) * | 2015-03-13 | 2015-05-20 | 佛山市南海区精鹰机械有限公司 | Method for determining principal plane of main shaft axis of machine tool by taper equality division as turning part |
| CN116718098A (en) * | 2023-08-09 | 2023-09-08 | 成都国营锦江机器厂 | Online measurement device for coaxiality of main stay bar of helicopter and application method |
-
2014
- 2014-09-11 CN CN201420538221.XU patent/CN204085369U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625115A (en) * | 2015-03-13 | 2015-05-20 | 佛山市南海区精鹰机械有限公司 | Method for determining principal plane of main shaft axis of machine tool by taper equality division as turning part |
| CN116718098A (en) * | 2023-08-09 | 2023-09-08 | 成都国营锦江机器厂 | Online measurement device for coaxiality of main stay bar of helicopter and application method |
| CN116718098B (en) * | 2023-08-09 | 2023-10-17 | 成都国营锦江机器厂 | Online measurement device for coaxiality of main stay bar of helicopter and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20150911 |
|
| EXPY | Termination of patent right or utility model |