CN224080898U - Impeller section height measurement gauge - Google Patents

Abstract

The utility model discloses a measuring gauge for the section height of an impeller, which comprises a workbench, wherein a rotatable base is arranged on the workbench, the base is used for fixing the impeller through a chuck, a threaded rod and a lock nut and driving the impeller to rotate, an adjusting component can adjust the position of a dial indicator in the direction X, Y, Z, a silicon nitride conical probe with a conical angle of 120 degrees and an outer edge thickness of 0.1mm is arranged at the end part of a probe of the dial indicator, and the outer edge of the probe is contacted with the impeller to measure the height. The circumferential array handles on the outer side of the base are convenient to circumferentially adjust, and the adjusting seat below the workbench is matched with a cushioning pad to ensure horizontal stability. The tool is matched with the three-way adjusting assembly through the rotatable base, so that the circumferential position of the section of the impeller is quickly adjusted, the dial indicator is accurately positioned, the conical probe is designed to eliminate the measurement angle deviation and the surface contact interference, and the silicon nitride material is improved in wear resistance. The whole structure is modularized, the cost is low, the operation is simple and convenient, and the requirements of workshop on-line detection on precision, efficiency and practicability are met.

Description

Impeller section height measurement gauge

Technical Field

The utility model relates to the technical field of impeller detection, in particular to a measuring gauge for the section height of an impeller.

Background

The impeller is used as a core component of the fluid machinery, and the geometric accuracy of the impeller directly influences the key performances such as the efficiency, noise, service life and the like of the equipment. In the field of impeller processing, accurate measurement of the height of a fixed section is a key procedure for guaranteeing the quality of impellers, and particularly in the production of open impellers, the traditional detection means are difficult to consider precision, efficiency and cost, and special detection equipment is needed to meet the online detection requirement of workshops.

Currently, impeller measurement techniques are mainly divided into two categories:

And the contact measurement is represented by a three-coordinate measuring machine, and data are acquired by contacting the surface of the impeller through a probe. The technology has higher precision, but expensive equipment and complex maintenance, has high requirements on working environment, and is difficult for small and medium enterprises to bear;

non-contact measurement, such as laser scanning, optical imaging and other technologies, although physical contact can be avoided, the equipment cost is higher and the operation threshold is complex;

Therefore, in order to solve the above problems, there is a need for a low-cost and high-practicability measuring tool for measuring the impeller section height, which is suitable for the requirements of workshop operation environments.

Disclosure of utility model

The utility model aims to overcome the defects, and the utility model aims to provide the impeller section height measurement gauge which realizes the rapid and accurate measurement of the impeller section height through the cooperative cooperation of the rotatable base and the multidirectional adjustment dial indicator, and meanwhile, the modularized adjustment assembly and the wear-resistant conical probe are adopted to remarkably reduce the equipment cost on the premise of ensuring the measurement precision and meet the practical requirement of workshop on-line detection.

The utility model provides a measuring gauge for the section height of an impeller, which comprises a workbench, wherein a rotatable base is arranged on the workbench, a chuck is arranged on the base, the impeller is clamped on the chuck, the base drives the impeller to rotate, an adjusting assembly and a dial indicator are arranged on the adjusting assembly, the adjusting assembly is used for adjusting the position of the dial indicator in the X, Y, Z direction, the dial indicator comprises a meter body and a probe, the probe extends out of the meter body and faces to the workbench, the probe can move in a telescopic manner in the Z direction, a probe is arranged at the end part of the probe far away from the meter body, the probe is conical, and the outer edge of the cone is in contact with the impeller and is used for measuring the height of a contact part. The workbench is provided with the rotatable base and the chuck, the impeller is fixed through the chuck and is driven to rotate by the base, the circumferential position adjustment of the section to be measured of the impeller is realized, the measurement requirements of the heights of sections at different angles are met, the probe can move in a telescopic manner along the Z axis, the probe is matched with the contact measurement of the conical probe, the height data of the specific part of the section of the impeller is directly obtained, and the impellers with different sizes can be installed in a replaceable manner.

Furthermore, the application relates to an impeller section height measurement gauge, wherein the taper angle of the probe is 120 degrees, the thickness of the outer edge is 0.1mm, and the gauge is made of silicon nitride. Through the conical structure of specific angle, when making the probe outward flange contact with the impeller surface, the contact line is along the conical busbar direction, ensure that measuring force perpendicular to impeller cross section waits the tangential direction of measurement point, realize the uniformity of probe axis and measuring direction, avoid the cosine error (namely the projection error that measuring direction is not perpendicular to cause) that leads to because of the angle deviation, 0.1mm extremely thin edge design reduces the contact area to the single point or the little line section of impeller surface, eliminate "face contact" interference because of the probe terminal surface area is too big, accurate capture impeller cross section's local height characteristic. Silicon nitride has better pressure resistance. When contacting softer materials, silicon nitride will exhibit better ability in terms of wear resistance, avoiding the problem of sticking aluminum dust.

Further, the application relates to an impeller section height measurement gauge, which comprises four upright posts, a pair of cross bars, a longitudinal bar, a connecting rod and a connecting piece, wherein the upright posts are vertically arranged on a workbench, the pair of cross bars are vertically arranged with the upright posts, the two cross bars are arranged in parallel and connected with the upright posts through the connecting piece, the cross bars can move in an adjustable mode along the Z-axis direction along the upright posts, the longitudinal bar is arranged between the pair of cross bars, connected through the connecting piece and perpendicular to the cross bars, the longitudinal bar can move in an adjustable mode along the X-axis direction along the cross bars, one end of the connecting rod is connected with the longitudinal bar through the connecting piece, the other end of the connecting rod is connected with a dial indicator through the connecting piece, and the connecting rod can move in an adjustable mode along the Y-axis direction along the longitudinal bar. X, Y, Z shaft adjustment is realized by sliding the cross rod, the longitudinal rod and the connecting rod on the guide rails respectively, and the adjustment in any direction does not affect the positioning in other directions.

Furthermore, according to the impeller section height measurement gauge, a group of handles are arranged on the outer side of the base in a circumferential array, and the handles are rotated to be matched with the probes to measure the height of the corresponding parts of the impeller. The circumferential array of handles allows an operator to complete the full section measurement of the circumference of the impeller without moving about the table.

Furthermore, in the impeller section height measurement gauge, the center of the base is provided with the threaded rod upwards, the threaded rod penetrates through the chuck and the impeller and extends out of the impeller, and the impeller is screwed on the chuck through the locking nut. The threaded rod is vertically arranged at the center of the base and used as an axial reference for impeller installation, the axis of the threaded rod is completely coincident with the rotating axis of the base, the rotating center of the section to be measured after the impeller is installed is ensured to be consistent with the theoretical geometric center, and the circumferential height measurement deviation caused by eccentricity is avoided. The lock nut is axially clamped, so that the impeller is prevented from moving along the Z-axis direction in the measuring process.

Furthermore, the application relates to an impeller section height measurement gauge, wherein a group of adjusting seats are arranged below a workbench, the group of adjusting seats are used for adjusting the horizontal height of the workbench, and a damping cushion is arranged at the bottom of each adjusting seat. The 4 adjusting seats are distributed at four corners of the workbench, independent lifting is realized through screw thread pairs, and the cushioning pad is made of nitrile rubber-aluminum alloy.

The technical scheme can be seen that the utility model has the following beneficial effects:

1. according to the impeller section height measurement gauge, the rotatable base is matched with the chuck to fix and drive the impeller to rotate, and the adjustment assembly is combined to accurately adjust the position of the dial indicator in the X, Y, Z direction, so that flexible adjustment of the circumferential position of the section to be measured of the impeller and quick positioning of the dial indicator probe are realized, the measurement requirements of section heights of different angles can be met, an expensive three-coordinate measuring machine or non-contact measuring equipment is not needed, the equipment cost is obviously reduced, the operation is simple and convenient, and the gauge is suitable for the practical requirements of workshop on-line detection.

2. According to the impeller section height measurement gauge, the probe is designed into the conical structure with the conical angle of 120 degrees and the outer edge thickness of 0.1mm, and is made of the silicon nitride material, so that the measurement force is vertical to the tangential direction of a to-be-measured point of the impeller section, cosine errors are avoided, meanwhile, the contact area is reduced to a single point or a micro-line section, the 'surface contact' interference is eliminated, the accurate capture of the local height characteristics of the impeller section is realized, the silicon nitride material has good wear resistance, the problems of adhesion of aluminum scraps and the like are avoided, the measurement precision is improved, the service life of the gauge is prolonged, the modularized adjusting assembly is convenient to maintain and adjust, and the use cost is further reduced.

Drawings

FIG. 1 is a schematic view of a structure of an impeller section height measurement gauge of the present utility model;

FIG. 2 is an enlarged schematic view of area A of FIG. 1;

fig. 3 is a diagram of a standard block example.

Description of the specification reference numerals:

1-a workbench;

2-a base;

3-chuck;

4-adjusting components, 41-upright posts, 42-cross bars, 43-longitudinal bars, 44-connecting bars and 45-connecting pieces;

5-dial gauge, 51-gauge body, 52-probe and 53-probe;

6-adjusting seat and 61-cushioning pad.

Detailed Description

The utility model is further elucidated below in connection with the drawings and the specific embodiments.

Example 1

The impeller section height measurement gauge shown in fig. 1-3 comprises a workbench 1, wherein a rotatable base 2 is arranged on the workbench 1, a chuck 3 is arranged on the base 2, and the chuck 3 is used for fixing an impeller. Three handles 21 are arranged on the outer circumferential array of the base 2, so that the base 2 can be manually rotated to adjust the angle of the impeller. The center of the base 2 is provided with a threaded rod 22 upwards, the threaded rod 22 penetrates through the chuck 3 and the impeller and extends out of the impeller, and the impeller is screwed on the chuck 3 through a locking nut 23, so that the impeller is stably installed.

A group of adjusting seats 6 are arranged below the workbench 1, and a cushioning pad 61 is arranged at the bottom of each adjusting seat 6 and is used for adjusting the horizontal height of the workbench 1 and reducing vibration interference. The adjusting assembly 4 is mounted on the table 1 and comprises four uprights 41, a pair of cross bars 42, a longitudinal bar 43, a connecting bar 44 and a connecting piece 45. The upright 41 is vertically fixed on the workbench 1, and the cross bar 42 is connected with the upright 41 through a connecting piece 45 and can be adjusted and moved in the Z-axis direction. The vertical bar 43 is provided between the pair of cross bars 42, is connected by a connecting member 45, and is slidable along the cross bars 42 in the X direction. One end of a connecting rod 44 is connected with the longitudinal rod 43 through a connecting piece 45, the other end of the connecting rod 44 is connected with the dial indicator 5 through the connecting piece 45, and the connecting rod 44 can slide along the longitudinal rod 43 in the Y direction, so that accurate positioning of the dial indicator 5 in the X, Y, Z directions is realized.

The dial indicator 5 is an electronic display type and comprises a meter body 51 and a probe 52, the probe 52 extends out of the meter body 51 and faces the workbench 1, and the probe 52 can move in a telescopic mode along the Z direction. The end of the probe 52 is provided with a probe 53, the probe 53 is conical, the conical angle is 120 degrees, the thickness of the outer edge is 0.1mm, and the probe is made of silicon nitride, so that the measurement accuracy and the wear resistance are ensured.

The specific use flow is as follows:

1. And (3) calibrating the dial indicator, namely installing the standard block on the chuck 3 and locking the standard block by a locking nut 23. The adjustment assembly 4 is manually adjusted to move the cross bar 42, the longitudinal bar 43 and the connecting bar 44 so that the probe 53 of the dial indicator 5 contacts the outer edge of the standard block. And pressing a return-to-zero key of the electronic digital display dial indicator 5 to finish calibration.

2. And (3) installing the impeller, namely taking down the standard block, installing the impeller to be tested on the chuck 3, and locking the impeller by using the locking nut 23. The handle 21 on the base 2 was rotated to adjust the impeller to the target cross-sectional position, and it was confirmed that the movement path of the probe 53 was not interfered.

3. And (3) data acquisition, namely lowering the probe 52 to enable the probe 53 to contact the curved surface of the impeller, displaying the current height value by the electronic digital display dial indicator 5, and recording the value. The base 2 is rotated by the handle 21, the height values of other sections of the impeller are measured and recorded one by one, and the full circumferential section height measurement is completed.

The above embodiments are illustrative for the purpose of illustrating the technical concept and features of the present utility model so that those skilled in the art can understand the contents of the present utility model and implement the same, and the scope of the present utility model is not limited thereto. All equivalent changes or modifications made according to the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims (6)

1. The impeller section height measurement gauge is characterized by comprising:

The workbench (1), a rotatable base (2) is arranged on the workbench (1), a chuck (3) is arranged on the base (2), an impeller is clamped on the chuck (3), and the base (2) drives the impeller to rotate;

The utility model provides a dial indicator, including adjusting part (4), amesdial (5) are installed on adjusting part (4), adjusting part is used for adjusting the position of amesdial (5) in X, Y, Z directions, amesdial (5) are including table body (51) and probe (52), probe (52) extend table body (51) and just to workstation (1), probe (52) can follow Z direction upward flexible removal, probe (52) keep away from the tip of table body (51) and are equipped with probe (53), probe (53) are the toper, toper outward flange and impeller contact for the height of measurement contact position.

2. The impeller section height measurement gauge according to claim 1, wherein,

The taper angle of the probe (53) is 120 degrees, the thickness of the outer edge is 0.1mm, and the probe is made of silicon nitride.

3. The impeller section height measurement gauge according to claim 1, wherein,

The adjusting component (4) comprises four upright posts (41), a pair of cross rods (42), a longitudinal rod (43), a connecting rod (44) and a connecting piece (45), wherein the upright posts (41) are vertically arranged on the workbench (1), the cross rods (42) are vertically arranged, the two cross rods (42) are arranged in parallel and are connected with the upright posts (41) through the connecting piece (45), the cross rods (42) are arranged between the pair of cross rods (42) in an adjustable mode along the Z-axis direction, the connecting piece (45) is connected, the connecting rod (44) is perpendicular to the cross rods (42), the longitudinal rod (43) is arranged along the cross rods (42) in an adjustable mode in the X-direction, one end of each connecting rod (44) is connected with the longitudinal rod (43) through the connecting piece (45), the other end of each connecting rod (44) is connected with the dial indicator (5), and the connecting rod (44) is arranged along the longitudinal rod (43) in an adjustable mode along the Y-axis direction.

4. The impeller section height measurement gauge according to claim 1, wherein,

A group of handles (21) are arranged on the outer side of the base (2) in a circumferential array, and the height of the corresponding part of the impeller is measured by rotating the handles (21) to be matched with the probes (53).

5. The impeller section height measurement gauge according to claim 1, wherein,

The center of the base (2) is provided with a threaded rod (22) upwards, the threaded rod (22) penetrates through the chuck (3) and the impeller and extends out of the impeller, and the impeller is screwed on the chuck (3) through a locking nut (23).

6. The impeller section height measurement gauge according to claim 1, wherein,

A group of adjusting seats (6) are arranged below the workbench (1), the group of adjusting seats (6) are used for adjusting the horizontal height of the workbench (1), and a damping cushion (61) is arranged at the bottom of the adjusting seats (6).