CN204963747U - Slide caliper of measuring aperture centre -to -centre spacing - Google Patents
Slide caliper of measuring aperture centre -to -centre spacing Download PDFInfo
- Publication number
- CN204963747U CN204963747U CN201520720426.4U CN201520720426U CN204963747U CN 204963747 U CN204963747 U CN 204963747U CN 201520720426 U CN201520720426 U CN 201520720426U CN 204963747 U CN204963747 U CN 204963747U
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- China
- Prior art keywords
- vernier
- fixed
- move
- knife
- sided edge
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Abstract
The utility model discloses a slide caliper of measuring aperture centre -to -centre spacing belongs to machining NULL instrument technical field. Main scale one end is fixed with fixed two -sided edge of a knife masuring jaw, sliding fit installs to move to left to move the vernier and move to right and moves the vernier on the main scale, it is equipped with fastening screw on moving the vernier to move to right, moves to right to move the vernier left end and be fixed with measuring claw in the right side, it also is equipped with fastening screw on moving the vernier to move to left, move to left move the vernier right -hand member be fixed with with measuring claw in the measuring claw complex left side in the right side, move to left move the vernier right -hand member still be fixed with with fixed two -sided edge of a knife masuring jaw complex removes two -sided edge of a knife masuring jaw. Measuring claw is used for the measuring aperture diameter in an interior measuring claw in the above -mentioned right side and the left side, following fixed two -sided edge of a knife masuring jaw is used for the precision measurement with the two -sided edge of a knife masuring jaw of removal, and (i) (i) the size can satisfy the more the large size measurement of hole centre -to -centre spacing for L1, L2. The utility model discloses simple structure, convenient operation is swift, and the methods of measurement degree of accuracy is high.
Description
Technical field
The utility model relates to a kind of machining accuracy survey instrument, specifically a kind of vernier caliper of center distance between holes.
Background technology
As shown in Figure 1, measure heart distance in hole on part and have three kinds of indirect measurement methods:
1st kind: measure two bore dia D1, D2 and inside dimension L1, its functional expression is: L=L
1-1/2*(D
1+ D
2);
2nd kind: measure two bore dia D1, D2 and outside dimension L2, its functional expression is: L=L
2+ 1/2*(D
1+ D
2);
3rd kind: measure inside dimension L2 and outside dimension L1, its functional expression is: L=1/2*(L
1+ L
2);
The error of the third method of hole centre distance indirect inspection is minimum, measuring accuracy is the highest.This is because the third method is measured, and only needs directly to measure two parameters
l 1 , L 2 , measurement parameter is few, and error source is few.
l 1 an inside dimension,
l 2 it is an outside dimension.Indirectly record gearbox shaft bearing hole centre distance
lerror be have directly to measure two parameters
l 1 , L 2 the accumulation of measuring appliance error is formed.Due to
l 1 an inside dimension,
l 2 an outside dimension, two parameters
l 1 , L 2 measuring appliance error itself can partial offset, and therefore, the third method is that hole centre distance indirect inspection precision is the highest, is the measuring method preferentially chosen.
Common vernier caliper a measuring jaw to be fixed on main scale another on vernier, when measuring with the measuring surface of left measuring claw for benchmark, the measuring jaw of the right band vernier carries out traverse measurement.Common vernier caliper measured hole and inside dimension not convenient also inaccurate.During center distance between holes, there is outside dimension to measure the measurement also having inside dimension, cannot measure for large-sized hole centre distance common calliper.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of vernier caliper operating the high center distance between holes of facility, measuring method accuracy.
The utility model is achieved through the following technical solutions: a kind of vernier caliper of center distance between holes, comprises main scale, and described main scale one end is fixed with fixed double-sided edge of a knife measuring jaw; Main scale is slidably installed and has moved left vernier and the vernier that moves right; The described vernier that moves right is provided with trip bolt, and the vernier left end that moves right is fixed with right inside measuring claw; Described moving left on vernier is also provided with trip bolt, moves left vernier right-hand member and is fixed with the left inside measuring claw coordinated with described right inside measuring claw; The described vernier right-hand member that moves left also is fixed with the two-sided edge of a knife measuring jaw of movement coordinated with described fixed double-sided edge of a knife measuring jaw.
It is further: a row dimension mark is respectively carved with on the both sides on described main scale surface, and described two row main scale dimension marks are from main scale difference end; A row dimension mark is respectively carved with on the both sides on the described vernier surface that moves right, and described two row move right vernier dimension mark from the vernier difference end that moves right; A row dimension mark is carved with on the described vernier surface that moves left.
Described fixed double-sided edge of a knife measuring jaw is identical with the end shape of mobile two-sided edge of a knife measuring jaw; Fixed double-sided edge of a knife measuring jaw end cross-sectional is isosceles trapezoid.
The utility model main scale has two moveable verniers, with measurement claw on each vernier, can move left and right and measure.Right inside measuring claw above and left inside measuring claw are used for measured hole diameter; Fixed double-sided edge of a knife measuring jaw below and mobile two-sided edge of a knife measuring jaw are used for accurately measuring
l 1 , L 2 size, can meet the measurement of hole centre distance large-size.The utility model structure is simple, and convenient to operation, measuring method accuracy is high.
Accompanying drawing explanation
Fig. 1 is measurement holes centre distance involved in background technology
lschematic diagram;
Fig. 2 is the utility model structural representation;
Fig. 3 be in Fig. 2 A-A to schematic diagram;
Fig. 4 is that the utility model is in measurement
l 1 time schematic diagram;
Fig. 5 is that the utility model is in measurement
l 2 time structure diagram;
In figure: 1, move left vernier; 2, main scale; 3, move right vernier; 4, trip bolt; 5, fixed double-sided edge of a knife measuring jaw; 6, right inside measuring claw; 7, left inside measuring claw; 8, two-sided edge of a knife measuring jaw is moved.
Embodiment
As shown in Figure 2, a kind of vernier caliper of center distance between holes, main scale 2 right-hand member is fixed with fixed double-sided edge of a knife measuring jaw 5; Main scale 2 is slidably installed and has moved left vernier 1 and the vernier 3 that moves right; The vernier 3 that moves right is provided with trip bolt 4, and vernier 3 left end that moves right is fixed with right inside measuring claw 6; Move left on vernier 1 and be also provided with trip bolt 4, move left vernier 1 right-hand member and be fixed with the left inside measuring claw 7 coordinated with described right inside measuring claw 6; Move left vernier 1 right-hand member and be also fixed with the two-sided edge of a knife measuring jaw 8 of movement coordinated with described fixed double-sided edge of a knife measuring jaw 5; Main scale 2 top is positioned at, for accurate measurement for the right inside measuring claw of measured hole diameter and left inside measuring claw
l 1 , L 2 it is following that the fixed double-sided edge of a knife measuring jaw of size and mobile two-sided edge of a knife measuring jaw are positioned at main scale 2.Again shown in composition graphs 3, fixed double-sided edge of a knife measuring jaw 5 is identical with the end shape of mobile two-sided edge of a knife measuring jaw 8; Fixed double-sided edge of a knife measuring jaw 5 end cross-sectional is isosceles trapezoid.
A row dimension mark is respectively carved with on the both sides on main scale 2 surface, and two row main scale 2 dimension marks are from main scale 2 difference end; A row dimension mark is respectively carved with on the move right both sides on vernier 3 surface, and two row move right vernier 3 dimension mark from the vernier 3 difference end that moves right; Move left vernier 1 surface and be carved with a row dimension mark.
The concrete using method of center distance between holes: as shown in Figure 4 and Figure 5, fixed double-sided edge of a knife measuring jaw 5 and mobile two-sided edge of a knife measuring jaw 8 are placed in the hole of two needs measurements, first measure
l 1 ; Then measure
l 2 ; By formula L=1/2*(L
1+ L
2) distance of holes centre distance can be learnt.
Claims (3)
1. a vernier caliper for center distance between holes, comprises main scale (2), it is characterized in that: described main scale (2) one end is fixed with fixed double-sided edge of a knife measuring jaw (5); Main scale (2) is slidably installed and has moved left vernier (1) and the vernier that moves right (3); The described vernier that moves right (3) is provided with trip bolt (4), and the vernier that moves right (3) left end is fixed with right inside measuring claw (6); Described moving left on vernier (1) is also provided with trip bolt (4), moves left vernier (1) right-hand member and is fixed with the left inside measuring claw (7) coordinated with described right inside measuring claw (6); Described vernier (1) right-hand member that moves left also is fixed with the two-sided edge of a knife measuring jaw (8) of movement coordinated with described fixed double-sided edge of a knife measuring jaw (5).
2. the vernier caliper of center distance between holes according to claim 1, is characterized in that: a row dimension mark is respectively carved with on the both sides on described main scale (2) surface, and described two row main scale (2) dimension marks are from main scale (2) difference end; A row dimension mark is respectively carved with on the both sides on the described vernier that moves right (3) surface, and described two row move right vernier (3) dimension mark from the vernier that moves right (3) difference end; A row dimension mark is carved with on described vernier (1) surface that moves left.
3. the vernier caliper of center distance between holes according to claim 1 and 2, is characterized in that: described fixed double-sided edge of a knife measuring jaw (5) is identical with the end shape of mobile two-sided edge of a knife measuring jaw (8); Fixed double-sided edge of a knife measuring jaw (5) end cross-sectional is isosceles trapezoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520720426.4U CN204963747U (en) | 2015-09-17 | 2015-09-17 | Slide caliper of measuring aperture centre -to -centre spacing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520720426.4U CN204963747U (en) | 2015-09-17 | 2015-09-17 | Slide caliper of measuring aperture centre -to -centre spacing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204963747U true CN204963747U (en) | 2016-01-13 |
Family
ID=55058804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520720426.4U Expired - Fee Related CN204963747U (en) | 2015-09-17 | 2015-09-17 | Slide caliper of measuring aperture centre -to -centre spacing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204963747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670158A (en) * | 2021-07-30 | 2021-11-19 | 中国十七冶集团有限公司 | Template interval positioning device and using method |
-
2015
- 2015-09-17 CN CN201520720426.4U patent/CN204963747U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670158A (en) * | 2021-07-30 | 2021-11-19 | 中国十七冶集团有限公司 | Template interval positioning device and using method |
| CN113670158B (en) * | 2021-07-30 | 2023-09-22 | 中国十七冶集团有限公司 | Template interval positioning device and use 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20160917 |