CN214537743U

CN214537743U - Measuring tool for measuring symmetry degree of plane and reference

Info

Publication number: CN214537743U
Application number: CN202120010341.2U
Authority: CN
Inventors: 黄强; 王斌; 冯永星; 魏琛; 张磊; 冯全全; 李敏
Original assignee: Xi'an Xae Flying Aviation Manufacturing Technology Co ltd
Current assignee: Xi'an Xae Flying Aviation Manufacturing Technology Co ltd
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2021-10-29
Anticipated expiration: 2031-01-05

Abstract

The utility model relates to an aviation parts machining technical field, concretely relates to survey utensil of measuring plane and benchmark symmetry. The method directly measures the symmetry degree of the plane and the reference, has high measurement precision, can improve the measurement efficiency, avoids or reduces the measurement error caused by other measurement methods, and ensures that the measurement of the symmetry degree of the plane and the reference is more accurate and the detection is more efficient. The utility model discloses a technical scheme include the survey utensil base of rectangle, the base bilateral symmetry is provided with first L type piece and second L type piece, survey utensil base upper portion bilateral symmetry is provided with supporting screw one and supporting screw two, the top of supporting screw one and supporting screw two be provided with first clamp plate and second clamp plate respectively, the middle survey utensil base of first L type piece and second L type piece on be provided with the guide pin bushing, be provided with the measurement piece on the survey utensil base in the middle of supporting screw one and the supporting screw two, the measurement piece sets up on an axis with the guide pin bushing.

Description

Measuring tool for measuring symmetry degree of plane and reference

Technical Field

The utility model relates to an aviation parts machining technical field, concretely relates to survey utensil of measuring plane and benchmark symmetry.

Background

The aviation fuel switch piston type part is mainly applied to the connection between fuel oil in a combustion chamber of an aircraft engine and a swirl chamber, the symmetry degree of a plane of the fuel switch piston part and a reference is measured, no direct and effective measurement scheme exists at present, a three-coordinate reference establishing measurement method is generally adopted for measurement, due to the fact that the shape is irregular, line segments and arcs forming the shape are more, and the time consumption and the precision of the three-coordinate reference establishing angle and the positioning surface are long.

Therefore, in order to measure the symmetry degree of the plane of the part and the reference, a new measuring tool is designed to determine a reasonable positioning surface and a reasonable measuring surface of the part, so that the requirement of the symmetry degree of the measuring plane and the reference is met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a survey utensil of measuring plane and benchmark symmetry, its direct measurement plane and the symmetry of benchmark, measurement accuracy is high, can improve measurement of efficiency, avoids or reduces the measuring error who brings with other measuring method, makes the measurement of measuring plane and benchmark symmetry more accurate, detects more high-efficiently.

For solving the problems existing in the prior art, the technical scheme of the utility model is that: the utility model provides a survey utensil of measuring plane and benchmark symmetry, includes the survey utensil base of rectangle, its characterized in that: the measuring tool comprises a measuring tool base, a first L-shaped block, a second L-shaped block, a first guide sleeve, a second guide sleeve and a third L-shaped block, wherein the first L-shaped block and the second L-shaped block are arranged on the lower portion of the measuring tool base in a bilateral symmetry mode; the measuring tool comprises a guide sleeve, a spring is sleeved on the guide sleeve, a supporting block is arranged on the spring and extends out of the top of the guide sleeve, a first supporting screw and a second supporting screw are symmetrically arranged on the left and right of the upper portion of a measuring tool base, a first pressing plate and a second pressing plate are respectively arranged on the top of the first supporting screw and the top of the second supporting screw, the other ends of the first pressing plate and the second pressing plate are arranged on the upper portions of the high sides of a first L-shaped block and a second L-shaped block, a waist-shaped groove is respectively arranged on the first pressing plate and the second pressing plate, a first stud is arranged in the waist-shaped groove of the first pressing plate in a penetrating manner, a second stud is arranged in the waist-shaped groove of the second pressing plate in a penetrating manner, a first screw nut is arranged on the first stud on the first pressing plate, a second screw nut is arranged on the second stud on the second pressing plate, and a measuring block is arranged on the measuring tool base between the first supporting screw and the second supporting screw, the measuring block and the guide sleeve are arranged on the same axis.

Further, the axis of the first support screw and the axis of the second support screw are respectively in the same straight line with the axis of the high side of the first L-shaped block and the axis of the high side of the second L-shaped block.

Furthermore, a stop block is arranged on the left side of the first L-shaped block and connected with the first L-shaped block through a first screw.

Furthermore, gaskets are arranged on the first stud bolt and the second stud bolt under the first screw nut and the second screw nut.

Compared with the prior art, the utility model has the advantages as follows:

1) the utility model has the advantages that the first V-shaped block and the second V-shaped block are arranged, so that the positioning surfaces at two sides of the first V-shaped block are attached to the excircle of the big end of the part to be measured, the positioning surfaces at two sides of the second V-shaped block are attached to the excircle of the small end of the part to be measured, the V-shaped blocks are used for positioning, the repeated positioning precision of the part is high, and the positioning is convenient and fast;

2) the utility model discloses a set up mobilizable supporting shoe in the guide pin bushing, make the lower extreme locating surface of part and the laminating of the upper end locating surface of supporting shoe, through the little clearance precision fit of part locating surface and supporting shoe, guarantee that the part locating surface is on a parallel with the supporting shoe all the time, realized the part angular precision positioning;

3) the utility model discloses a set up the measuring block, when measuring the symmetry, as long as the part up end is located between the upper and lower measuring face of measuring block, can regard the symmetry qualified, the part detects convenience, high-efficient.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a schematic view of a base structure;

FIG. 5 is an enlarged schematic view at D;

FIG. 6 is a schematic view of the structure within the guide sleeve;

description of reference numerals: 1-measuring tool base, 2-threaded hole I, 3-threaded hole II, 4-positioning hole I, 5-threaded hole III, 6-positioning hole II, 7-positioning hole III, 8-first L-shaped block, 9-screw I, 10-stop block, 11-pin I, 12-screw II, 13-first pressure plate, 14-stud I, 15-screw nut I, 16-support screw I, 17-second pressure plate, 18-stud II, 19-screw nut II, 20-support screw II, 21-second L-shaped block, 22-pin II, 23-screw III, 24-guide sleeve, 25-support block, 26-plug screw 27-spring, 28-measuring block, 29-part, surface A-measuring plane, b-surface-big end positioning surface.

Detailed Description

The design is described in detail below with reference to the attached drawing figures:

the utility model provides a measuring tool for measuring the symmetry degree between a plane and a reference, which comprises a rectangular measuring tool base 1 as shown in figures 1-3; the lower part of the measuring tool base 1 is symmetrically provided with a first L-shaped block 8 and a second L-shaped block 21 from left to right, and the first L-shaped block 8 is connected with the clamp base 1 through a pin I11 and a screw II 12; the second L-shaped block 21 is connected with the clamp base 1 through a second pin 22 and a third screw 23; a stop block 10 is arranged on the left side of the first L-shaped block 8, the stop block 10 is connected with the first L-shaped block 8 through a first screw 9, and the stop block 10 is used for stopping the end face of the part and preventing the part from moving axially;

the top of the first L-shaped block 8 and the top of the second L-shaped block 21 are provided with V-shaped grooves, the depth of the V-shaped grooves of the first L-shaped block 8 is greater than that of the V-shaped grooves of the second L-shaped block 21, and a guide sleeve 24 is arranged on the middle measuring tool base 1 of the first L-shaped block 8 and the second L-shaped block 21; a plug screw 26 is arranged in the guide sleeve 24, a spring 27 is sleeved on the plug screw 26, a supporting block 25 is arranged on the spring 27, and the supporting block 25 extends out of the top of the guide sleeve 24.

The measuring tool base 1 is provided with a first support screw 16 and a second support screw 20 in bilateral symmetry at the upper part, the axes of the first support screw 16 and the second support screw 20 are respectively on the same straight line with the axes of the high sides of the first L-shaped block 8 and the second L-shaped block 21, the tops of the first support screw 16 and the second support screw 20 are respectively provided with a first pressing plate 13 and a second pressing plate 17, the other ends of the first pressing plate 13 and the second pressing plate 17 are arranged at the upper parts of the high sides of the first L-shaped block 8 and the second L-shaped block 21, the first pressing plate 13 and the second pressing plate 17 are respectively provided with a waist-shaped groove, a first stud 14 is arranged in the waist-shaped groove of the first pressing plate 13, a second stud 18 is arranged in the waist-shaped groove of the second pressing plate 17, a first screw nut 15 is arranged on the first stud 14 on the first pressing plate 13, and a second screw nut 19 is arranged on the second stud 18 on the second pressing plate 17, the measuring tool base 1 between the first support screw 16 and the second support screw 20 is provided with a measuring block 28, and the measuring block 28 and the guide sleeve 24 are arranged on the same axis.

And gaskets are arranged on the first stud bolt 14 and the second stud bolt 18 below the first screw nut 15 and the second screw nut 19.

A third positioning hole 7 is formed in the center of the lower portion of the measuring tool base 1, two sides of the third positioning hole 7 are respectively symmetrically and longitudinally provided with 2 groups of third threaded

holes

5 and 2 groups of second positioning holes 6, and the 2 groups of second positioning holes 6 are arranged in the middle of the 2 groups of third threaded holes 5; the upper part of the base 1 is provided with a first threaded hole 2 and a second threaded hole 3, and a first positioning hole 4 is arranged at the position, close to the first threaded hole 2, of the base 1, as shown in fig. 1.

The measuring block 28 penetrates through the first positioning hole 4 and is connected with the base 1, the guide sleeve 24 penetrates through the third positioning hole 7 and is connected with the base 1, the first two threaded holes 2 and the second two threaded holes 3 are respectively connected with the first supporting screw 16, the second supporting screw 20, the first stud 14 and the first stud 18, and the third 2 groups of threaded holes 5 and the second 2 groups of positioning holes 6 respectively connect the first L-shaped block 8 and the second L-shaped block 21 with the measuring base 1 through the second screw 12, the first pin 11, the third screw 23 and the second pin 22.

The first 2 threaded holes are provided with 2, the second 3 threaded holes are provided with 2, the third 5 threaded holes are provided with 4, and the second 6 positioning holes are provided with 4.

The number of the pins I11 is 2, the number of the screws II 12 is 2, the number of the pins II 22 is 2, and the number of the screws III 23 is 2.

A measuring method of a measuring tool for measuring the symmetry degree of a plane and a reference comprises the following steps:

the first step is as follows: placing the measuring tool base 1 on a flat workbench, placing a large end positioning circle of a measured part 29 in a V-shaped groove of a first L-shaped block 8, placing a small end positioning circle of the part 29 in a V-shaped groove of a second L-shaped block 21, enabling the large end positioning circle of the part to be attached to the V-shaped groove of the first L-shaped block 8, enabling the small end positioning circle of the part to be attached to the V-shaped groove of the second L-shaped block 21, pushing the part 29 to the first L-shaped block 8, and enabling the left end face of the part 29 to be attached to a stop block 10;

the second step is that: installing a first pressing plate 13, enabling one end of the first pressing plate 13 to press the large end positioning circle of the part 29, placing the other end of the first pressing plate 13 on a first supporting screw 16, and screwing a first screw nut 15 to enable the large end of the part 29 to be fixed on the first L-shaped block 8;

the third step: installing a second pressing plate 17, enabling one end of the second pressing plate 17 to press the small end positioning circle of the part 29, placing the other end of the second pressing plate 17 on a second supporting screw 20, screwing a second screw nut 19, enabling the small end of the part 29 to be fixed on a second L-shaped block 21, and enabling the large end positioning surface (B surface) of the part 29 to be automatically attached to the upper end surface of the supporting block 25;

the fourth step: the contrast measuring plane (A face, be the utility model the measuring plane) and measuring block 28's difference in height, be the symmetry of measuring plane and benchmark promptly.

The measurement results show that: the measuring plane (A surface) is higher than the a2 surface of the measuring block 28 and lower than the a1 surface of the measuring block 28, namely the symmetry of the measuring plane to the reference is qualified; if the measuring plane (A surface) is lower than the a2 surface of the measuring block 28, the symmetry of the measuring plane to the reference is unqualified; if the measuring plane (A surface) is higher than the a1 surface of the measuring block 28, the symmetry of the measuring plane to the reference is unqualified;

of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides a survey utensil of measuring plane and benchmark symmetry, includes the survey utensil base (1) of rectangle, its characterized in that: a first L-shaped block (8) and a second L-shaped block (21) are symmetrically arranged on the left and right of the lower portion of the measuring tool base (1), V-shaped grooves are formed in the tops of the first L-shaped block (8) and the second L-shaped block (21), the depth of each V-shaped groove of the first L-shaped block (8) is larger than that of each V-shaped groove of the second L-shaped block (21), and a guide sleeve (24) is arranged on the measuring tool base (1) between the first L-shaped block (8) and the second L-shaped block (21); a plug screw (26) is arranged in the guide sleeve (24), a spring (27) is sleeved on the plug screw (26), a supporting block (25) is arranged on the spring (27), the supporting block (25) extends out of the top of the guide sleeve (24), a first supporting screw (16) and a second supporting screw (20) are symmetrically arranged on the upper portion of the measuring tool base (1) in the left-right direction, a first pressing plate (13) and a second pressing plate (17) are respectively arranged on the top of the first supporting screw (16) and the top of the second supporting screw (20), the other ends of the first pressing plate (13) and the second pressing plate (17) are arranged on the upper portions of the high sides of the first L-shaped block (8) and the second L-shaped block (21), waist-shaped grooves are respectively arranged on the first pressing plate (13) and the second pressing plate (17), a first stud (14) is arranged in the waist-shaped groove of the first pressing plate (13) in a penetrating manner, a second stud (18) is arranged in the waist-shaped groove of the second pressing plate (17) in a penetrating manner, the measuring tool is characterized in that a first screw nut (15) is arranged on a first stud bolt (14) on the first pressing plate (13), a second screw nut (19) is arranged on a second stud bolt (18) on the second pressing plate (17), a measuring block (28) is arranged on the measuring tool base (1) between the first support screw (16) and the second support screw (20), and the measuring block (28) and the guide sleeve (24) are arranged on the same axis.

2. A measuring tool for measuring the symmetry of a plane with respect to a reference according to claim 1, wherein: the axial lines of the first support screw (16) and the second support screw (20) are respectively in the same straight line with the axial lines of the high sides of the first L-shaped block (8) and the second L-shaped block (21).

3. A measuring tool for measuring the symmetry of a plane with respect to a reference according to claim 1 or 2, characterized in that: a stop block (10) is arranged on the left side of the first L-shaped block (8), and the stop block (10) is connected with the first L-shaped block (8) through a first screw (9).

4. A measuring tool for measuring the symmetry of a plane with respect to a reference according to claim 3, wherein: and gaskets are arranged on the first stud (14) and the second stud (18) below the first screw nut (15) and the second screw nut (19).