CN203672249U - Large-diameter inner and outer diameter measuring micrometer - Google Patents
Large-diameter inner and outer diameter measuring micrometer Download PDFInfo
- Publication number
- CN203672249U CN203672249U CN201420054977.7U CN201420054977U CN203672249U CN 203672249 U CN203672249 U CN 203672249U CN 201420054977 U CN201420054977 U CN 201420054977U CN 203672249 U CN203672249 U CN 203672249U
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- sounding rod
- straight
- bar
- measuring staff
- movement measuring
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Abstract
A large-diameter inner and outer diameter measuring micrometer comprises two straight rods, a right measuring rod, a left measuring rod and a middle movable measuring rod. The middle movable measuring rod is vertically fixed on the middle of the straight rods, and the right and left measuring rods are symmetrically fixed on the straight rods of two side of the middle activity measuring rod. The middle movable measuring rod driven by an external force can slide relative the straight rod, and a surface of the middle movable measuring rod is provided with scale value. The large-diameter inner and outer diameter measuring micrometer has the advantages that: combined with computer-aided design can quickly and accurately measure the large-diameter inner and outer diameter of a workpiece.
Description
Technical field
The utility model relates to a kind of major diameter inside and outside circle diameter measurement milscale.
Background technology
At present, in major diameter inside and outside circle diameter measurement, there is no good way.Particularly diameter exceedes the inside and outside circle diameter of 3 meters, all very inconvenient.Process the workpiece of 5 meters-20 meters of diameters on lathe time, when the diameter of the interior garden of special in-site measurement, first to adopt the outer garden of π chi measuring basis diameter, then by wall-thickness measurement, calculate interior garden diameter.Or measure by optical orientator, the time needing is long, and expensive.Straight line duration impact on workpiece is very large.
Summary of the invention
For above-mentioned technical matters, the utility model provides a kind of and has fast measured workpiece major diameter inside and outside circle diameter milscale in conjunction with computer-aided design (CAD).
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of major diameter inside and outside circle diameter measurement milscale comprises straight-bar, right sounding rod, left sounding rod, middle part movement measuring staff; Described middle part movement measuring staff is vertically movably fixed in the middle of straight-bar, on the straight-bar that is fixed on middle part movement measuring staff two sides of described right sounding rod and described left sounding rod symmetry;
Described middle part movement measuring staff straight-bar slip relatively under external force drives, movement measuring staff surface, middle part is provided with scale numerical value.
Further, on straight-bar, arrange and be provided with multiple fixed orifices taking middle part movement measuring staff center line as rotational symmetry, described right sounding rod and described left sounding rod can insert in fixed orifice fixing.
Further, right sounding rod and the each end of described left sounding rod are tapered end.
Further, milscale also comprises fixed support, and described fixed support comprises the support of U-shaped cell body and fixing U-lag body, and straight-bar can be put into U-shaped cell body.
All right, U-shaped cell body is connected with stent helix.
The beneficial effects of the utility model are, while needing precision measurement large diameter circular arc diameter, utilize right sounding rod (A point), between left sounding rod (B point), fixed range (AB) is chosen the chord length (X) of one section of regular length, measure the height (H) of chord length (X) middle part circular arc, in conjunction with utilizing cad technique, draw fixed range (AB) straight line (L), make circular arc with straight line (L) two end points again, make center of arc's point equal height (H) apart from straight line (L) central point length, read again circular arc dimensioning, can know arc diameter, its measuring method is quick, accurately.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is the front view of the utility model structure.
Fig. 2 is the vertical view of the utility model structure.
Fig. 3 uses the utility model to measure inner arc schematic diagram.
Fig. 4 uses the utility model to measure outer arc schematic diagram.
In figure: 1 straight-bar, 2 right sounding rods, 3 left sounding rods, 4 middle part movement measuring staffs, 5 fixed orifices.
Embodiment
As shown in Figure 1, Figure 2, a kind of major diameter inside and outside circle diameter measurement milscale comprises straight-bar 1, right sounding rod 2, left sounding rod 3, middle part movement measuring staff 4; Middle part movement measuring staff 4 is vertically movably fixed in the middle of straight-bar 1, on the straight-bar 1 that is fixed on middle part movement measuring staff 4 two sides of right sounding rod 2 and left sounding rod 3 symmetries;
Under external force drives, middle part movement measuring staff 4 can slide by relative straight-bar 1, and movement measuring staff 4 surfaces in middle part are provided with scale numerical value;
On straight-bar 1, arrange and be provided with four fixed orifices 5 taking middle part movement measuring staff 4 center lines as rotational symmetry, two, 4 left side of movement measuring staff, middle part fixed orifice 5, two, the right fixed orifice 5, right sounding rod 2 is fixed in rightmost fixed orifice 5, and left sounding rod 3 is fixed in Far Left fixed orifice 5;
Right sounding rod 2 bottoms and left sounding rod 3 bottoms are tapered end.
Preferably, a kind of major diameter inside and outside circle diameter measurement milscale also comprises fixed support, fixed support comprises the support of U-shaped cell body and fixing U-lag body, straight-bar 1 can be put into U-shaped cell body, U-shaped cell body is connected with stent helix, utilize fixed support to fix straight-bar 1, be convenient to right sounding rod 2, left sounding rod 3 is located.
Principle of work: as Fig. 3, utilize the major diameter inside and outside circle diameter measurement miking interior garden of diameter of work diameter method greatly
By middle part movement measuring staff 4 back to zeros qualified calibration; On workpiece, draw a contour line, length 400 with Steel Ruler and marking pen; Right sounding rod 2, left sounding rod 3 are positioned on level line; Mobile middle part movement measuring staff 4, until middle part movement measuring staff 4 touches workpiece, reads reading; Utilize CAD to draw three points arc, mark this arc diameter, be garden diameter in workpiece; In CAD, arc size precision will be set to 0.001mm the best.
as Fig. 4,utilize the major diameter inside and outside circle diameter measurement miking outer garden of diameter of work diameter method greatly
Qualified middle part movement measuring staff 4 backhauls of calibration are formed to maximal value to top; On workpiece, draw a contour line, length 400 with Steel Ruler and marking pen; Right sounding rod 2, left sounding rod 3 are positioned on level line; Mobile middle part movement measuring staff 4, until middle part movement measuring staff 4 touches workpiece, reads reading; Utilize CAD to draw three points arc, mark this arc diameter, be the outer garden of workpiece diameter; In CAD, arc size precision will be set to 0.001mm the best.
Structure in this example is only for for the illustrating and explaining of claim, so that popular reading comprehension should not be considered as the restriction for claim, scope and legal equivalent feature that protection domain of the present utility model should be recorded with claim be as the criterion.
Claims (5)
1. a major diameter inside and outside circle diameter measurement milscale, is characterized in that: described milscale comprises straight-bar (1), right sounding rod (2), left sounding rod (3), middle part movement measuring staff (4); Described middle part movement measuring staff (4) is vertically movably fixed in the middle of straight-bar (1), and what described right sounding rod (2) and described left sounding rod (3) were symmetrical is fixed on the straight-bar (1) of middle part movement measuring staff (4) two sides;
Described middle part movement measuring staff (4) straight-bar (1) slip relatively under external force drives, middle part movement measuring staff (4) surface is provided with scale numerical value.
2. a kind of major diameter inside and outside circle diameter measurement milscale according to claim 1, it is characterized in that: described straight-bar (1) is upper to be arranged and be provided with multiple fixed orifices (5) taking middle part movement measuring staff (4) center line as rotational symmetry, described right sounding rod (2) can insert in fixed orifice (5) fixing with described left sounding rod (3).
3. a kind of major diameter inside and outside circle diameter measurement milscale according to claim 1, is characterized in that: described right sounding rod (2) is tapered end with the each end of described left sounding rod (3).
4. a kind of major diameter inside and outside circle diameter measurement milscale according to claim 1, it is characterized in that: described milscale also comprises fixed support, described fixed support comprises the support of U-shaped cell body and fixing U-lag body, and straight-bar (1) can be put into U-shaped cell body.
5. a kind of major diameter inside and outside circle diameter measurement milscale according to claim 4, is characterized in that: described U-shaped cell body is connected with stent helix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420054977.7U CN203672249U (en) | 2014-01-28 | 2014-01-28 | Large-diameter inner and outer diameter measuring micrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420054977.7U CN203672249U (en) | 2014-01-28 | 2014-01-28 | Large-diameter inner and outer diameter measuring micrometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203672249U true CN203672249U (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420054977.7U Expired - Fee Related CN203672249U (en) | 2014-01-28 | 2014-01-28 | Large-diameter inner and outer diameter measuring micrometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203672249U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024033571A1 (en) * | 2022-08-09 | 2024-02-15 | Pjk Forest Tech Oy | A method for calibrating the log thickness measurement device of a forest harvester and an apparatus for measuring the diameter of a tree |
-
2014
- 2014-01-28 CN CN201420054977.7U patent/CN203672249U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024033571A1 (en) * | 2022-08-09 | 2024-02-15 | Pjk Forest Tech Oy | A method for calibrating the log thickness measurement device of a forest harvester and an apparatus for measuring the diameter of a tree |
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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: 20140625 Termination date: 20180128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |