CN212253911U

CN212253911U - Axial dimension measuring tool

Info

Publication number: CN212253911U
Application number: CN202021165335.6U
Authority: CN
Inventors: 季寅泽; 范骏鹏; 郑广昇
Original assignee: AECC Commercial Aircraft Engine Co Ltd
Current assignee: AECC Commercial Aircraft Engine Co Ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2020-12-29
Anticipated expiration: 2030-06-22

Abstract

The present disclosure relates to an axial dimension measuring tool, comprising: positioning blocks; the measuring rod is used for extending into the shaft hole of the piece to be measured; the measuring rod comprises a main rod and a radial extension piece, the axis direction of the main rod is perpendicular to the end face of the positioning block, and the radial extension piece is arranged at one end, far away from the positioning block, of the main rod and extends along the radial direction of the main rod. This is disclosed sets up the radial extension piece along the radial extension of mobile jib through the one end of keeping away from the locating piece at the mobile jib of measuring staff, and radial extension piece can be convenient for with some measured component contact that the reachability is not good to conveniently realize the axial dimension and measure, have higher commonality.

Description

Axial dimension measuring tool

Technical Field

The disclosure relates to the technical field of aircraft engines, in particular to an axial dimension measuring tool.

Background

Aircraft engines require a series of measurements during assembly for checking the quality of the assembly, where the axial dimensions are particularly important, especially in areas where accessibility is poor.

At present, the axial dimension in the assembly process of the aeroengine is mainly measured by general measuring tools (such as a depth gauge, a vernier caliper and the like) or special measuring tools. For some poorly accessible measurements (such as depth measurements in small holes, deep cavities, stepped holes, and large inside diameter conditions), the universal gauge may be inadequate, while making a dedicated gauge results in higher cost and longer cycle time.

SUMMERY OF THE UTILITY MODEL

The purpose of this disclosure is to provide an axial dimension measuring tool, can realize the measurement to aeroengine part different axial dimensions, possess certain convenience and commonality.

Some embodiments of the present disclosure provide an axial dimension measurement tool, comprising:

positioning blocks; and

the measuring rod is used for extending into the shaft hole of the piece to be measured;

the measuring rod comprises a main rod and a radial extension piece, the axis direction of the main rod is perpendicular to the end face of the positioning block, and the radial extension piece is arranged at one end, far away from the positioning block, of the main rod and extends along the radial direction of the main rod.

In some embodiments, the stylus further comprises a probe disposed at the free end of the radially extending member, the axial direction of the probe being coincident with the axial direction of the main shaft.

In some embodiments, the device further comprises a guide sleeve fixedly arranged with the positioning block, and the main rod is movably arranged in the guide sleeve.

In some embodiments, the main rod is removably disposed within the guide sleeve.

In some embodiments, a spring disposed within the guide sleeve is further included for urging the main rod.

In some embodiments, the positioning device further comprises a positioning pin arranged on the end face of the positioning block close to the measuring rod, and the axis of the positioning pin is perpendicular to the end face of the positioning block.

In some embodiments, the positioning device further comprises a dial indicator arranged on the end face of the positioning block far away from the measuring rod and used for measuring the height difference between the top of the measuring rod and the top of the positioning block.

Based on above-mentioned technical scheme, this disclosure sets up the radial extension piece along the radial extension of mobile jib through the one end that the locating piece was kept away from to the mobile jib at the measuring staff, and radial extension piece can be convenient for with some measured component contact that reachability is not good to conveniently realize the axial dimensions and measure, have higher commonality.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural view of some embodiments of an axial dimension measurement tool of the present disclosure in use;

FIG. 2 is a schematic structural view of a locating block and guide sleeve in some embodiments of the axial dimension measuring tool of the present disclosure;

FIG. 3 is a schematic structural view of a spindle in some embodiments of the axial dimension measuring tool of the present disclosure;

FIG. 4 is a schematic view of a spindle and guide sleeve assembly configuration of some embodiments of the axial dimension measuring tool of the present disclosure;

FIG. 5 is a schematic structural view of a dial indicator in some embodiments of an axial dimension measuring tool of the present disclosure;

FIG. 6 is a schematic structural view of some embodiments of an axial dimension measurement tool of the present disclosure;

FIG. 7 is a schematic view of some embodiments of the axial dimension measurement tool of the present disclosure in actual measurement.

Description of the reference numerals

1. Positioning blocks; 2. a measuring rod; 3. a guide sleeve; 4. a dial indicator; 5. a spring; 11. positioning pins; 21. a main rod; 22. a radially extending member; 23. a probe; x, a piece to be detected.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.

The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, the particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.

All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, devices, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

As shown in fig. 1-3, some embodiments of the present disclosure provide an axial dimension measuring tool, comprising: locating piece 1 and measuring staff 2, measuring staff 2 is used for stretching into the shaft hole of the X that awaits measuring, and wherein, measuring staff 2 includes mobile jib 21 and radial extension piece 22, and the axis direction of mobile jib 21 is perpendicular with the terminal surface of locating piece 1, and radial extension piece 22 sets up the radial extension of keeping away from the one end of locating piece 1 and along mobile jib 21 at mobile jib 21.

As shown in fig. 1 to 3, by providing the radially extending member 22 extending along the radial direction of the main rod 21 at the end of the main rod 21 of the measuring rod 2 away from the positioning block 1, the radially extending member 22 can be conveniently contacted with some components to be measured with poor accessibility, such as the stepped groove of the component to be measured X shown in fig. 1, and the axial dimension measurement can be conveniently realized by rotating the main rod 21, and the axial dimension can be more conveniently measured under the condition of poor accessibility of measurement, so that the measuring device has high versatility.

To ensure contact reliability, in some embodiments, the stylus 2 further comprises a probe 23 disposed at the free end of the radially extending member 22, the axial direction of the probe 23 being coincident with the axial direction of the main shaft 21, as shown in figure 3. The probe 23 can make the user accurately sense whether the contact end surface of the tested component is contacted with the tested component, and the practicability is high.

As shown in fig. 1 and 2, in some embodiments, the axial dimension measuring tool further includes a guide sleeve 3, the guide sleeve 3 is fixedly disposed with the positioning block 1, and the main rod 21 is movably disposed in the guide sleeve 3. The guide sleeve 3 is used for limiting the measuring rod 2, so that the main rod 21 is always parallel to the axis of the X-shaped workpiece to be measured in the measuring process, and the accuracy of axial dimension measurement is guaranteed.

In order to increase the range of applicability, in some embodiments the main rod 21 is detachably arranged in the guide sleeve 3, so that measurements can be performed by exchanging measuring rods 2 of different lengths depending on the value to be measured.

As shown in fig. 4, in some embodiments, the axial dimension measuring tool further comprises a spring 5 disposed inside the guide sleeve 3 for urging the main rod 21. The spring 5 is arranged in the guide sleeve 3 and connected with the guide sleeve 3 and the measuring rod 2, so that the probe 23 is always pressed on the measuring surface in the measuring process.

To ensure the measurement stability, as shown in fig. 2, in some embodiments, the axial dimension measuring tool further includes a positioning pin 11 disposed on an end surface of the positioning block 1 near the measuring rod 2, and an axis of the positioning pin 11 is perpendicular to the end surface of the positioning block 1. The locating pin 11 guarantees that the locating piece 1 is perpendicular to the axis of the piece X to be measured, guarantees simultaneously that the locating piece 1 can not take place relative movement with the piece X to be measured, and can realize carrying out blind survey to the position that can't be inspected visually through the locating pin. The positioning pin 11 may be designed according to the measured spatial condition, and the fixing manner includes, but is not limited to, a contact fixing manner, a screw fixing manner, and the like.

For how to obtain the measured value, in some embodiments, as shown in fig. 5 to 7, the axial dimension measuring tool further includes a dial indicator 4 disposed on an end surface of the positioning block 1 away from the measuring rod 2, for measuring a height difference between the top of the measuring rod 2 and the top of the positioning block 1, thereby calculating the axial dimension.

The following description of the measurement process of the axial dimension measuring tool of the present disclosure is made by taking the embodiment shown in fig. 6 and 7 as an example:

a) the required measured dimension is a;

b) measuring the size of a tool in advance, and as shown in fig. 6, when the upper end surface of the measuring rod 2 is flush with the upper end surface of the positioning block 1, measuring the axial distance H from the lower end surface of the measuring rod 2 to the lower end surface of the positioning block 1;

c) using a tool, as shown in fig. 7, the positioning block 1 is reliably fixed, the lower end of the measuring rod 2 contacts the measured surface, the upper end surface of the measuring rod 2 protrudes out of or is recessed into the upper end surface of the positioning block 1, and the dial indicator 4 is used for measuring the protruding or recessed length B;

d) when the upper end face of the measuring rod 2 protrudes out of the upper end face of the positioning block 1, calculating the size A to be H-B;

when the upper end surface of the measuring rod 2 is concave to the upper end surface of the positioning block 1, the calculated size A is H + B.

Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. An axial dimension measuring tool, comprising:

a positioning block (1); and

the measuring rod (2) is used for extending into the shaft hole of the piece to be measured (X);

wherein, measuring staff (2) include mobile jib (21) and radial extension piece (22), the axis direction of mobile jib (21) with the terminal surface of locating piece (1) is perpendicular, radial extension piece (22) set up mobile jib (21) are kept away from the one end of locating piece (1) and along the radial extension of mobile jib (21).

2. An axial dimension measuring tool according to claim 1, characterized in that the measuring rod (2) further comprises a probe (23) arranged at the free end of the radially extending member (22), the axial direction of the probe (23) coinciding with the axial direction of the main rod (21).

3. The axial dimension measuring tool according to claim 1, further comprising a guide sleeve (3) fixedly arranged with the positioning block (1), the main rod (21) being movably arranged within the guide sleeve (3).

4. Axial dimension measuring tool according to claim 3, characterized in that the main rod (21) is detachably arranged within the guide sleeve (3).

5. The axial dimension measuring tool according to claim 3, further comprising a spring (5) disposed in the guide sleeve (3) for urging the main rod (21).

6. The axial dimension measuring tool according to claim 1, further comprising a positioning pin (11) disposed on an end surface of the positioning block (1) near the spindle (2), wherein an axis of the positioning pin (11) is perpendicular to the end surface of the positioning block (1).

7. The axial dimension measuring tool according to claim 1, further comprising a dial indicator (4) arranged on an end surface of the positioning block (1) remote from the measuring bar (2) for measuring a height difference between the top of the measuring bar (2) and the top of the positioning block (1).