CN219328383U - Vernier caliper for measuring inner diameter - Google Patents
Vernier caliper for measuring inner diameter Download PDFInfo
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- CN219328383U CN219328383U CN202320098120.4U CN202320098120U CN219328383U CN 219328383 U CN219328383 U CN 219328383U CN 202320098120 U CN202320098120 U CN 202320098120U CN 219328383 U CN219328383 U CN 219328383U
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- vernier
- cross arm
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Abstract
The vernier caliper comprises a main scale, wherein a vernier scale track and a cross arm track are arranged on the main scale, the vernier scale is in sliding fit with the vernier scale track and is locked through a fastening screw, and a positioning cross arm is in sliding fit with the cross arm track and is locked through the fastening screw; when the two ends of the positioning cross arm and one end of the main ruler are contacted with the inner wall of the die, the measuring axes of the main ruler and the vernier pass through the circle center of the cross section in the die. The vernier caliper for measuring the inner diameter can be placed in any section of the inside of a die to measure the inner diameter of the die.
Description
Technical Field
The utility model relates to a vernier caliper, in particular to an inner diameter measuring vernier caliper, through which the inner diameter size of each section of a cylindrical and frustum-shaped die can be measured.
Background
According to the requirements of the national standard DL/T5150 'hydraulic concrete test procedure', the inner diameter of concrete axle center compressive strength test mould, impervious test mould and other test moulds needs to be measured. The conventional vernier caliper or long claw vernier caliper can only measure the inner diameter of the upper section of the test die, but cannot measure the inner diameter of the lower section or middle section due to the limitation of the depth of the die.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an inner diameter measuring vernier caliper which can be placed at any position in a die to measure the inner diameter size of a corresponding section.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the vernier caliper comprises a main scale, wherein a vernier scale track and a cross arm track are arranged on the main scale, the vernier scale is in sliding fit with the vernier scale track and is locked through a fastening screw, and a positioning cross arm is in sliding fit with the cross arm track and is locked through the fastening screw; when the two ends of the positioning cross arm and one end of the main ruler are contacted with the inner wall of the die, the measuring axes of the main ruler and the vernier pass through the circle center of the cross section in the die.
Two ends of the positioning cross arm are provided with cross arm tips, and one end of the main ruler is provided with a main ruler tip.
The utility model discloses an inner diameter measuring vernier caliper, which has the following technical effects: through setting up vernier rail, xarm track along length direction from top to bottom at the main scale for vernier, location xarm are along main scale length direction directional movement and through fastening screw locking, the convenient adjustment is accomplished location and is measured like this. When the device is placed at any cross section position in a die, the positioning of the positioning cross arm enables the measuring axes of the main scale and the vernier to pass through the circle center of the cross section, so that the device can conveniently and accurately measure the inner diameter of the main scale and the vernier, and the data accuracy is improved.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a front view of the present utility model.
Fig. 2 is a cross-sectional view of the present utility model.
Fig. 3 is a top view of the locating cross arm of the present utility model.
Fig. 4 is a front view of the locating cross arm of the present utility model.
Fig. 5 is a top view of the main scale of the present utility model.
Fig. 6 is a side view of the main scale of the present utility model.
Fig. 7 is a front view of the main scale of the present utility model.
Fig. 8 is a top view of the vernier of the present utility model.
Fig. 9 is a side view of the vernier of the present utility model.
Fig. 10 is a front view of the vernier of the present utility model.
In the figure: the device comprises a main scale 1, a vernier 2, a positioning cross arm 3, a fastening screw 4, a die 5, a vernier track 1.1, a cross arm track 1.2, a main scale tip 1.3 and a cross arm tip 3.1.
Detailed Description
As shown in fig. 1, the vernier caliper for measuring the inner diameter comprises a main scale 1, a vernier scale 2, a positioning cross arm 3 and a fastening screw 4.
The main scale 1 is a main graduated scale for measuring the inner diameter, and is provided with a vernier rail 1.1 and a cross arm rail 1.2 for the vernier 2 and the positioning cross arm 3 to walk on, and simultaneously, the main axes of the main scale, the vernier and the positioning cross arm 3 are ensured to be in the same vertical plane. The initial scale of the main scale 1 is the length L of the main scale tip 1 Plus the effective length L of vernier 2 (axial distance of vernier 0 scale to vernier tip); the end point scale of the main scale is determined according to the required measuring range.
The vernier 2 is a secondary graduated scale for measuring the inner diameter, is arranged on a vernier track 1.1 on the main scale and moves on the vernier track, and is matched with the main scale 1 to read the final graduation. The scale distribution and the range of the vernier 2 are determined according to the required precision, and if the required precision is mm, the scale distribution of the vernier is as followsx-1) uniform distribution in the mm rangexThe scale of the parts.
The positioning cross arm 3 is arranged on the cross arm track 1.2 on the main scale 1, and when the cross arm tips at the two sides of the positioning cross arm are abutted against the inner wall of the die 5, the axes of the positioning cross arm necessarily pass through the circle center, and the positioning cross arm is used for positioning the main scale 1 and the vernier 2, so that the measuring axes are ensured to pass through the circle center.
The fastening screw 4 is used to fix the position of the positioning bridge 3 and vernier 2 on the main scale 1 in order to take out the calliper number.
Working principle and process:
step 1), sliding the positioning cross arm 3 to enable the cross arm tips 3.1 and the main rule tips 1.3 at two sides to simultaneously abut against the inner side of the die 5, and tightening the fastening screw 4 on the positioning cross arm 3;
step 2), sliding the vernier 2, enabling the tip of the vernier 2 to abut against the inner wall of the die 5, and tightening the fastening screw 4 on the vernier 2;
step 3), taking out the caliper, and reading the scale to obtain the inner diameter of the measured die 5.
Claims (2)
1. An inside diameter measurement slide caliper, its characterized in that: the vernier scale comprises a main scale (1), wherein a vernier scale track (1.1) and a cross arm track (1.2) are arranged on the main scale (1), the vernier scale (2) is in sliding fit with the vernier scale track (1.1) and is locked through a fastening screw (4), and a positioning cross arm (3) is in sliding fit with the cross arm track (1.2) and is locked through the fastening screw (4); when the two ends of the positioning cross arm (3) and one end of the main scale (1) are in contact with the inner wall of the die (5), the measuring axes of the main scale (1) and the vernier (2) pass through the center of the cross section of the die (5).
2. An inside diameter measuring vernier caliper as defined in claim 1, wherein: two ends of the positioning cross arm (3) are provided with cross arm tips (3.1), and one end of the main scale (1) is provided with a main scale tip (1.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320098120.4U CN219328383U (en) | 2023-02-01 | 2023-02-01 | Vernier caliper for measuring inner diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320098120.4U CN219328383U (en) | 2023-02-01 | 2023-02-01 | Vernier caliper for measuring inner diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219328383U true CN219328383U (en) | 2023-07-11 |
Family
ID=87066298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320098120.4U Active CN219328383U (en) | 2023-02-01 | 2023-02-01 | Vernier caliper for measuring inner diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219328383U (en) |
-
2023
- 2023-02-01 CN CN202320098120.4U patent/CN219328383U/en active Active
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