CN215725512U - High-precision gauge - Google Patents
High-precision gauge Download PDFInfo
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- CN215725512U CN215725512U CN202121877493.9U CN202121877493U CN215725512U CN 215725512 U CN215725512 U CN 215725512U CN 202121877493 U CN202121877493 U CN 202121877493U CN 215725512 U CN215725512 U CN 215725512U
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Abstract
The utility model discloses a high-precision gauge which comprises micrometer measuring rods formed by splicing a plurality of connecting rods; one end of the micrometer measuring rod is provided with a fixed end measuring head; and a dial indicator measuring head which is positioned on the same horizontal line with the fixed end measuring head is arranged at the other end of the micrometer measuring rod. According to the utility model, by the micrometer measuring rod, the fixed end measuring head and the dial indicator measuring head which are respectively oppositely or reversely arranged at two ends of the micrometer measuring rod, the inner diameter and the outer diameter of the multi-groove high-precision part with different sizes can be effectively measured, and the measuring precision is high.
Description
Technical Field
The utility model relates to the technical field of detection tools, in particular to a high-precision detection tool for measuring the inner diameter and the outer diameter of a groove.
Background
In the mechanical parts, the dimension of the inner diameter and the outer diameter of a groove are too different to influence the assembly of a customer.
Typically, we will measure the inside and outside diameters of the grooved part using an outside micrometer and an inside micrometer. However, as shown in fig. 1, the multi-groove high-precision part cannot be measured by using a conventional outside micrometer and a conventional inside micrometer. Therefore, it is one of the problems that the skilled person needs to solve at present that the inner and outer diameter measurement problem of the multi-groove high-precision part can be solved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high-precision gauge which can effectively measure the inner diameter and the outer diameter of a multi-groove high-precision part.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows.
A high-precision gauge comprises micrometer measuring rods formed by splicing a plurality of connecting rods; one end of the micrometer measuring rod is provided with a fixed end measuring head; and a dial indicator measuring head which is positioned on the same horizontal line with the fixed end measuring head is arranged at the other end of the micrometer measuring rod.
Preferably, one of the micrometer measuring rods is a fine adjustment connecting rod with adjustable length and high precision.
Preferably, the top of the fixed end measuring head is perpendicular to the micrometer measuring rod and is fixedly connected with the end of the micrometer measuring rod through a fastening screw, a first measuring pin is arranged at the bottom of the fixed end measuring head under the fastening screw, and the detection end face of the first measuring pin is tightly attached to the vertical end face of the measured workpiece and is perpendicular to the micrometer measuring rod during measurement.
Preferably, the dial indicator measuring head comprises an adjustable measuring head and a high-precision dial indicator arranged on the adjustable measuring head; the top of the adjustable measuring head is perpendicular to the micrometer measuring rod and is fixedly connected with the end of the micrometer measuring rod through a fastening screw, and a second measuring pin connected with a high-precision dial indicator is arranged at the bottom of the adjustable measuring head right below the fastening screw.
Preferably, the head of the first measuring probe and the head of the second measuring probe are located on the same horizontal line, the head of the first measuring probe and the head of the second measuring probe are arranged symmetrically in a splayed manner when the inner diameter is measured, and the head of the first measuring probe and the head of the second measuring probe are arranged symmetrically in a splayed manner when the outer diameter is measured.
Due to the adoption of the technical scheme, the technical progress of the utility model is as follows.
According to the utility model, by the micrometer measuring rod, the fixed end measuring head and the dial indicator measuring head which are respectively oppositely or reversely arranged at two ends of the micrometer measuring rod, the inner diameter and the outer diameter of the multi-groove high-precision part with different sizes can be effectively measured, and the measuring precision is high.
Drawings
FIG. 1 is a longitudinal cross-sectional view of a multi-grooved high precision part;
FIG. 2 is a schematic structural view of an outer diameter groove inspection tool of the present invention;
FIG. 3 is a schematic view of an inner diameter groove inspection tool of the present invention;
FIG. 4 is a schematic measurement view of an outer diameter groove inspection tool of the present invention;
FIG. 5 is a schematic view of the inner diameter groove inspection tool of the present invention.
Wherein: 1. micrometer measuring rod, 2, fixed end measuring head, 3, dial indicator measuring head, and 4, fastening screw.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a utensil is examined to high accuracy, combines fig. 2 to fig. 3 to show, includes micrometer measuring staff 1, stiff end gauge head 2 and percentage table gauge head 3, and wherein, stiff end gauge head 2 and percentage table gauge head 3 are fixed at micrometer measuring staff 1's both ends through fastening screw 4 respectively, and stiff end gauge head 2 and percentage table gauge head 3 are located same water flat line.
The micrometer measuring rod 1 is formed by splicing a plurality of connecting rods according to the principle of the connecting rods of the inside micrometer, wherein one connecting rod is a fine adjustment connecting rod, the adjustment length is 0-25mm, and the adjustment precision can reach 0.005 mm. The length of the micrometer measuring rod 1 is L1, L1 is the distance between the axle centers of two fastening screws 4 of the fixed end measuring head 2 and the dial indicator measuring head 3, the range of L1 is 100-2000mm, and the precision is 0.005 mm.
The fixed end measuring head 2 is made of high-strength wear-resistant alloy steel, the top of the fixed end measuring head is perpendicular to the micrometer measuring rod 1, and the fixed end measuring head is fixedly connected with the end part of the micrometer measuring rod 1 through a fastening screw 4; the bottom of the fixed end measuring head 2 which is positioned under the fastening screw 4 is of an inverted U-shaped structure, and a first measuring needle is clamped in the inverted U-shaped structure through a matched bolt and nut. The first measuring pin is positioned right below the fastening screw 4, and the detection end face of the first measuring pin is in contact with the vertical end face of the measured workpiece and is perpendicular to the micrometer measuring rod 1 during measurement.
The dial indicator measuring head 3 comprises a high-precision dial indicator and an adjustable measuring head, wherein the high-precision dial indicator is arranged on the adjustable measuring head, the adjustable measuring head is made of high-strength wear-resistant alloy steel, the adjusting range is 0-1.5mm (similar to a lever indicator), and the adjusting precision is 0.002 mm. The top of the adjustable measuring head is perpendicular to the micrometer measuring rod 1 and is fixedly connected with the end part of the micrometer measuring rod 1 through a fastening screw 4; the bottom of the dial indicator measuring head 3 which is positioned under the fastening screw 4 is of an inverted U-shaped structure, and a second measuring pin is clamped in the inverted U-shaped structure through a matched bolt and nut. The second measuring pin is located under the fastening screw 4, and through a mechanical transmission system and a high-precision dial indicator, the detection end face of the second measuring pin is in contact with the vertical end face of the measured workpiece and is perpendicular to the micrometer measuring rod 1 during measurement, and the tightness of the contact of the second measuring pin and the measured workpiece is measured through the dial indicator.
When the gauge for measuring the outer diameter of the groove is manufactured, the needle head part of the first measuring needle and the needle head part of the second measuring needle are positioned on the same horizontal line and symmetrically arranged in a splayed manner, the vertical distance between the needle head part of the first measuring needle and the axis of the corresponding fastening screw 4 is L3, and L3 is 20mm +/-0.001 mm; the vertical distance between the needle head of the second measuring needle and the axle center of the corresponding fastening screw 4 is L2, and L2 is 20mm +/-0.001 mm.
When the gauge for measuring the inner diameter of the groove is manufactured, the needle head part of the first measuring needle and the needle head of the second measuring needle are positioned on the same horizontal line and symmetrically arranged in an inverted splayed shape, the vertical distance between the needle head part of the first measuring needle and the axis of the corresponding fastening screw 4 is L3, and L3 is 20mm +/-0.001 mm; the vertical distance between the needle head of the second measuring needle and the axle center of the corresponding fastening screw 4 is L2, and L2 is 20mm +/-0.001 mm.
When the utility model is used, as shown in fig. 4, a measuring needle inclined plane of a fixed end measuring head 2 of an outer diameter groove detection tool is attached to the outer diameter side wall of a groove; the measuring needle inclined surface of the measuring head 3 of the dial indicator is attached to the side wall of the outer diameter of the groove by adjusting the measuring rod 1 of the micrometer; the detection tool rotates and reciprocates along the outer diameter of the groove, and the maximum value of the length L1 of the micrometer measuring rod 1 is determined by adjusting a fine adjustment connecting rod of the micrometer measuring rod 1; summing L1, L2, and L3 is the outer diameter length of the groove.
As shown in fig. 5, a probe inclined plane of a fixed end measuring head 2 of the inner diameter groove detection tool is attached to an inner diameter side wall of a groove; the measuring needle inclined surface of the measuring head 3 of the dial indicator is attached to the side wall of the inner diameter of the groove by adjusting the measuring rod 1 of the micrometer; the detection tool rotates and reciprocates along the inner diameter of the groove, and the maximum value of the length L1 of the micrometer measuring rod 1 is determined by adjusting a fine adjustment connecting rod of the micrometer measuring rod 1; the values of L1-L2-L3 are calculated to be the length of the inner diameter of the groove.
Claims (5)
1. The utility model provides a utensil is examined to high accuracy which characterized in that: comprises a micrometer measuring rod (1) formed by splicing a plurality of connecting rods; one end of the micrometer measuring rod (1) is provided with a fixed end measuring head (2); and a dial indicator measuring head (3) which is positioned on the same horizontal line with the fixed end measuring head (2) is arranged at the other end of the micrometer measuring rod (1).
2. The high-precision gauge according to claim 1, characterized in that: one connecting rod in the micrometer measuring rod (1) is a fine adjustment connecting rod with adjustable length and high precision.
3. The high-precision gauge according to claim 1, characterized in that: the top of the fixed end measuring head (2) is perpendicular to the micrometer measuring rod (1) and is fixedly connected with the end of the micrometer measuring rod (1) through a fastening screw (4), a first measuring needle is arranged at the bottom of the fixed end measuring head (2) which is positioned under the fastening screw (4), and the detection end face of the first measuring needle is tightly attached to the vertical end face of a workpiece to be measured and is perpendicular to the micrometer measuring rod (1) during measurement.
4. A high accuracy testing fixture according to claim 3, characterized in that: the dial indicator measuring head (3) comprises an adjustable measuring head and a high-precision dial indicator arranged on the adjustable measuring head; the top of the adjustable measuring head is perpendicular to the micrometer measuring rod (1) and is fixedly connected with the end of the micrometer measuring rod (1) through a fastening screw (4), and a second measuring pin connected with a high-precision dial indicator is arranged at the bottom of the adjustable measuring head right below the fastening screw (4).
5. The high-precision gauge according to claim 4, characterized in that: the needle head part of the first measuring needle and the needle head part of the second measuring needle are positioned on the same horizontal line, the needle head part of the first measuring needle and the needle head part of the second measuring needle are symmetrically arranged in a splayed manner when the inner diameter is measured, and the needle head part of the first measuring needle and the needle head part of the second measuring needle are symmetrically arranged in a reverse splayed manner when the outer diameter is measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121877493.9U CN215725512U (en) | 2021-08-12 | 2021-08-12 | High-precision gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121877493.9U CN215725512U (en) | 2021-08-12 | 2021-08-12 | High-precision gauge |
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| Publication Number | Publication Date |
|---|---|
| CN215725512U true CN215725512U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121877493.9U Active CN215725512U (en) | 2021-08-12 | 2021-08-12 | High-precision gauge |
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| CN (1) | CN215725512U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118089494A (en) * | 2024-04-17 | 2024-05-28 | 成都新成量工具有限公司 | Special gauge for detecting offset of measuring surface of outside micrometer and detection method |
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2021
- 2021-08-12 CN CN202121877493.9U patent/CN215725512U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118089494A (en) * | 2024-04-17 | 2024-05-28 | 成都新成量工具有限公司 | Special gauge for detecting offset of measuring surface of outside micrometer and detection method |
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