CN212409534U

CN212409534U - Roller type vernier caliper

Info

Publication number: CN212409534U
Application number: CN202020809955.2U
Authority: CN
Inventors: 薛祥友; 孙捷夫
Original assignee: Shenyang Aircraft Industry Group Co Ltd
Current assignee: Shenyang Aircraft Industry Group Co Ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-01-26
Anticipated expiration: 2030-05-15

Abstract

The utility model belongs to the machining field relates to a roller type slide caliper, including fixed ruler, slip subassembly, reference column, vice chi, the installation and the operation mode with traditional ordinary slide caliper are the same. The four rollers are respectively hinged to the end parts of the four clamping jaws and can smoothly rotate around the shafts of the clamping jaws. The two lower rollers are fixed on the outer sides of the end parts of the two clamping jaws below the fixed ruler, and the two upper rollers are fixed on the inner sides of the end parts of the two clamping jaws above the fixed ruler. The roller type vernier caliper can measure various dimensions of mechanical parts, and particularly can accurately measure the distance from an arc to a plane and the size of an aperture; when the roller type vernier caliper is adopted, the clamping jaws can be quickly clamped at the lowest point or the maximum position of the circular arc under the rolling action of the rollers, and accurate numerical values can be quickly obtained without repeated measurement.

Description

Roller type vernier caliper

Technical Field

The utility model belongs to the machining field relates to a roller type slide caliper, especially relates to a roller type slide caliper for measuring distance and aperture, and its purpose can carry out the characteristic dimension measurement to the spare part after processing.

Background

In machining engineering, various measuring scales are needed for measuring various characteristic dimensions of products, wherein the vernier caliper is the most common vernier caliper. In the measuring and using process, the distance from a plane to the plane, the distance from the plane to an arc, the diameter of an excircle and the aperture are measured frequently, according to the structural characteristics of the traditional vernier caliper, when the diameters from the plane to the plane and the excircle are measured, the root part of a jaw of the vernier caliper can be used for clamping the measured surface, the jaw is in surface-to-surface contact with the measured surface, the diameters from the plane to the plane and the excircle can be measured well, and the measurement error is small; however, when measuring the distance from the plane to the arc and the diameter of the inner hole, the front end of the jaw of the vernier caliper is used for clamping the surface to be measured, and because the front end of the jaw is a relatively narrow plane and even is in edge contact, when measuring the distance from the arc to the plane and the diameter of the inner hole, finding the lowest point of the arc is very difficult due to the influence of friction between the jaw and the surface to be measured, and generally, an experienced operator can obtain an approximate value of the element to be measured through repeated measurement; especially when the front end of the jaw is a small plane, there is a principle error when measuring the inner hole, as shown in fig. 1, it is a principle diagram of the measurement error of the traditional vernier caliper in the measurement process, when measuring the position size in fig. 1, it is affected by the arc curvature, the holding force and the friction force in the operation process, when measuring, the sizes L0, L1, L2 can be obtained by the operation, wherein L0 is a theoretical value, while L1 and L2 have a larger measurement error, and the accurate value of the structural feature cannot be obtained.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can be used for geometric feature's of precision measurement machine part roller type slide caliper, the unable fine measuring circular arc of solution traditional slide caliper that can be fine reaches plane and internal diameter distance, its simple structure, convenient operation, low in production cost, the limited machining environment of specially adapted measuring condition.

In order to achieve the above object, the utility model discloses a technical scheme be:

a roller type vernier caliper can measure various dimensions of mechanical parts, particularly can accurately measure the distance from an arc to a plane and the size of an aperture, and comprises a fixed ruler 1, a sliding assembly 2, a positioning column 3, an auxiliary ruler 4 and rollers, wherein the rollers comprise a lower roller A5-1, a lower roller B5-2, an upper roller A5-3 and an upper roller B5-4. The utility model discloses well mounting scale 1, slip subassembly 2, reference column 3, vice chi 4 are the same with the installation and the operation mode of traditional ordinary slide caliper rule.

The fixed ruler 1 is an installation platform for all components, 0-150mm scales are arranged on the fixed ruler, and the graduation is 0.02; the fixed ruler 1 is provided with slide rails up and down.

The sliding assembly 2 is arranged on a sliding rail of the fixed ruler 1 and can slide on the sliding rail; the positioning column 3 is provided with threads, is screwed in through the sliding assembly 2, and the lower end of the positioning column is pressed against the upper side of the fixed ruler 1. The auxiliary ruler 4 is fixedly arranged on the sliding component 2 and is fixed with the sliding component 2 through a bolt.

The four rollers are respectively hinged at the end parts of the four clamping jaws, can rotate smoothly around the shaft of the clamping jaws and can flexibly rotate on the clamping jaws. Specifically, the lower rollers A5-1 and the lower rollers B5-2 are fixed on the outer sides of the two jaw ends below the fixed ruler 1, and the upper rollers A5-3 and the upper rollers B5-4 are fixed on the inner sides of the two jaw ends above the fixed ruler 1.

When the roller type vernier caliper is adopted, the clamping jaw can be quickly clamped at the lowest point or the maximum position of an arc under the rolling action of the roller, accurate numerical values can be quickly obtained without repeated measurement, the problem that the principle error or the operation error of the traditional vernier caliper is large when an inner hole is measured or the measurement of the relevant size of an arc surface is involved is solved, and the roller type vernier caliper can be widely applied to the field of machining.

The utility model has the advantages that: this roller type slide caliper simple structure only increases the roller structure on traditional slide caliper's jack catch, can the accurate measurement circular arc to plane distance and aperture size and dimension value, reduces the error, improves measurement accuracy, reduces the measurement number of times simultaneously, reduces operator's intensity of labour, also improves production efficiency.

Drawings

FIG. 1 is a schematic view of a roller-type vernier caliper;

FIG. 2 is a schematic view of roller installation of the roller-type vernier caliper;

FIGS. 3(a) and (b) are schematic diagrams of errors of a conventional vernier caliper in measuring different positions;

FIGS. 4(a) and (b) are schematic diagrams of the operation of the roller-type vernier caliper at different positions;

in the figure: 1, fixing a ruler; 2, a sliding component; 3, positioning the column; 4, auxiliary ruler; 5-1 lower roller A, 5-2 lower roller B, 5-3 upper roller A and 5-4 upper roller B.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

A roller type vernier caliper can measure various dimensions of mechanical parts, particularly can accurately measure the distance from an arc to a plane and the size of an aperture, and comprises a fixed ruler 1, a sliding assembly 2, a positioning column 3, an auxiliary ruler 4 and rollers, wherein the rollers comprise a lower roller A5-1, a lower roller B5-2, an upper roller A5-3 and an upper roller B5-4. The utility model discloses well mounting scale 1, slip subassembly 2, reference column 3, vice chi 4 are the same with the installation and the operation mode of traditional ordinary slide caliper rule. The fixed ruler 1 is a mounting platform for all parts, scales are arranged on the fixed ruler 1, and slide rails are arranged on the fixed ruler 1 up and down. The sliding assembly 2 is arranged on a sliding rail of the fixed ruler 1 and can slide on the sliding rail; the positioning column 3 is provided with threads, is screwed in through the sliding assembly 2, and the lower end of the positioning column is pressed against the upper side of the fixed ruler 1. The auxiliary ruler 4 is fixedly arranged on the sliding component 2 and is fixed with the sliding component 2 through a bolt. The four rollers are respectively hinged at the end parts of the four clamping jaws and can flexibly rotate on the clamping jaws.

Adopt the mode of this roller type slide caliper place usefulness when measuring the part the same with the operation mode that adopts traditional ordinary slide caliper the utility model discloses well fixed ruler 1, slip subassembly 2, reference column 3, vice chi 4 are the same with the installation and the operation mode of traditional ordinary slide caliper.

When the position as shown in fig. 4(a) is measured, the measured feature is clamped by a lower jaw of the vernier caliper, at this time, because the lower roller A5-1 and the lower roller B5-2 can rotate smoothly around the axis of the jaw, when the surface of the measured feature is clamped, under the clamping force, the lower roller A5-1 and the lower roller B5-2 roll on the measured surface, the vernier caliper is driven to move to the lowest point of the arc, at this time, the lower roller A5-1 and the lower roller B5-2 are in line contact with the measured surface, and the accurate measured distance can be obtained.

When the position shown in fig. 4(B) is measured, the inner hole is clamped by the upper jaw of the vernier caliper, and similarly, the upper roller a5-3 and the upper roller B5-4 roll on the surface of the inner hole to drive the jaw of the vernier caliper to move to the maximum value of the inner hole, and the diameter of the inner hole at the moment is read, so that the measured value L0 can be obtained quickly.

The above-mentioned embodiments only represent the embodiments of the present invention, but can not be understood as the limitation of the scope of the present invention, and it should be noted that, for those skilled in the art, a plurality of variations and improvements can be made without departing from the concept of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. A roller type vernier caliper comprises a fixed ruler (1), a sliding assembly (2), a positioning column (3) and an auxiliary ruler (4), wherein the fixed ruler (1), the sliding assembly (2), the positioning column (3) and the auxiliary ruler (4) are the same as the traditional ordinary caliper in installation and operation modes, and the roller type vernier caliper is characterized by comprising rollers, wherein the rollers comprise a lower roller A (5-1), a lower roller B (5-2), an upper roller A (5-3) and an upper roller B (5-4);

the fixed ruler (1) is an installation platform for all components, and slide rails are arranged on the upper part and the lower part of the fixed ruler (1); the sliding assembly (2) is arranged on a sliding rail of the fixed ruler (1) and can slide on the sliding rail; the positioning column (3) is provided with threads and screwed into the sliding assembly (2), and the lower end of the positioning column is propped against the upper side of the fixed ruler (1); the auxiliary ruler (4) is fixedly arranged on the sliding assembly (2) and is fixed with the sliding assembly (2) through a bolt;

the four rollers are respectively hinged at the end parts of the four clamping jaws and can smoothly rotate around the shaft of the clamping jaws; the lower roller A (5-1) and the lower roller B (5-2) are fixed on the outer sides of the two jaw end parts below the fixed ruler (1), and the upper roller A (5-3) and the upper roller B (5-4) are fixed on the inner sides of the two jaw end parts above the fixed ruler (1).