CN215296070U

CN215296070U - Length gauge

Info

Publication number: CN215296070U
Application number: CN202120401229.1U
Authority: CN
Inventors: 冯彦瑾; 张立勇; 徐皓珉; 王熔; 李齐
Original assignee: Avic Power Zhuzhou Aviation Parts Manufacturing Co ltd
Current assignee: Hunan Xingtu Aerospace And Spacecraft Manufacturing Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-12-24
Anticipated expiration: 2031-02-24

Abstract

The utility model discloses a length gauge for detect tube-shape class part, be provided with the part groove on the inner wall of tube-shape class part, the position measurement that length gauge is used for the part groove, include: the fixed measuring component is inserted into the cylindrical part and is abutted against one side of the cylindrical part for supporting; the movable measuring component is inserted into the cylindrical part and used in cooperation with the fixed measuring component, is used for detecting the position of the part groove, and has the effects of measuring batch products, shortening measuring time and facilitating operation of workers.

Description

Length gauge

Technical Field

The utility model relates to a technical field of measuring equipment, in particular to a length gauge.

Background

Three-coordinate measurement refers to an instrument capable of expressing measurement capabilities such as geometric shapes, lengths, circumferential division and the like in a hexahedral space range, and is also called as a three-coordinate measuring instrument or a three-coordinate scalar bed. A coordinate measuring machine can be defined as "an instrument having a three-axis displacement measuring system (e.g. optical ruler) which calculates coordinates (X, Y, Z) of each point of a workpiece and measures each function thereof by a data processor or a computer, and a three-direction movable probe which is movable on three mutually perpendicular guide rails and transmits signals in a contact or non-contact manner". The measurement functions of the three-coordinate measuring instrument include dimensional accuracy, positioning accuracy, geometric accuracy, contour accuracy and the like.

In the prior art, when the position of a part groove in a cylindrical part is measured, the position is measured by a three-coordinate measuring technology.

In the prior art, when the position and the width of a part groove in a cylindrical part are measured, the three-coordinate method is adopted for measurement, a large amount of time needs to be consumed, the production and the processing are not facilitated, and an improvement space is provided

SUMMERY OF THE UTILITY MODEL

The utility model provides a length gauge to solve and to become the technical problem that the inside part trench position of tube-shape class part carries out the rapid survey in batches.

According to the utility model discloses an aspect provides a length gauge for the position measurement in the part groove of tube-shape class part, the part groove is located on the inner wall of tube-shape class part, still be equipped with the face of leaning on that corresponds with the part groove in the tube-shape class part to the face of leaning on is as the position of location benchmark in order to measure the part groove, include: the fixed measuring component is inserted into the cylindrical part and abuts against the bearing surface of the cylindrical part for supporting; the movable measuring component is inserted into the cylindrical part and is matched with the fixed measuring component in a fit mode through the surface and the surface, and the movable measuring component is used for measuring the position of the part groove.

Through adopting above-mentioned technical scheme, stretch into tube-shape class part with fixed measuring subassembly inside, support through fixed measuring subassembly, stretch into tube-shape class part with moving measuring subassembly again inside, through moving measuring subassembly and fixed measuring subassembly cooperation measurement, accomplish and measure the part groove of tube-shape class part inside, simplified the measuring step, have and measure batch production for measuring time makes things convenient for the effect of workman's operation.

Further, fixed measuring unit includes fixed handle and fixed measuring block, fixed measuring block with fixed connection between the fixed handle.

Through adopting above-mentioned technical scheme, through with fixed measuring block and the integrative installation of fixed handle, make things convenient for the workman to operate, the condition that the fixed measuring block of workman operation can't be operated takes place in the part, through being fixed in a organic whole with fixed measuring block and fixed handle, makes things convenient for the workman to carry out the rapid survey to the part.

Further, the connecting piece includes the screw, screw thread wears to establish fixed measuring block with fixed handle threaded connection, the screw is kept away from fixed handle's one end with the tip of fixed measuring block flushes or accomodates in fixed measuring block.

Through adopting above-mentioned technical scheme, will fix the measuring block and connect in an organic whole with fixed handle through the screw, avoid among the measurement process fixed measuring block to drop and cause the damage and lead to the fact the damage to the part.

Furthermore, chamfers are arranged on two sides of the peripheral wall of the fixed measuring block.

Through adopting above-mentioned technical scheme, the perisporium both sides processing at fixed measuring block has the chamfer, through with fixed measuring block get into the part when inside, avoids the tip edges and corners of fixed measuring block and the inside butt scratch of part, causes the part to damage.

Further, the removal measuring subassembly is including removing measuring block and removal handle, remove the handle with fixed connection between the removal measuring block, the one end of removal measuring block towards tube-shape class part inner wall is provided with the ladder piece, and the other end of removal measuring block towards tube-shape class part inner wall is provided with straight piece, and the butt is in tube-shape class part to the removal measuring block fixed measuring block, the ladder piece with form the tip between the fixed measuring block, straight piece with form the main aspects between the fixed measuring block.

By adopting the technical scheme, the fixed measuring block and the fixed handle are integrally stretched into the part for measuring, the fixed measuring block is attached to the abutting surface, the movable measuring block and the movable handle are stretched into the part again, the movable measuring block and the abutting surface of the fixed measuring block are attached for measuring, the movable measuring block is stretched into the part for measuring the part groove by driving the movable handle, the small end is formed between the stepped block and the fixed measuring block, the large end is formed between the straight block and the fixed measuring block, the movable measuring block and the fixed measuring block are stretched into the part for measuring the part groove, if the small end can enter the part groove, the large end cannot enter the part groove, the part is qualified, and if not, the small end is unqualified.

Further, the radial height of the step block is less than 5 mm.

By adopting the technical scheme, the height of the step block along the radial direction is set to be less than 5mm, so that the step block is prevented from being too long and causing scratch when entering the interior of the cylindrical part, and the condition of inaccurate measurement precision is caused.

Further, the moving measuring block and the moving handle are provided with a stud therebetween, the stud thread penetrates through the moving measuring block and is connected with the moving handle thread, and one end of the stud, which is far away from the moving handle, is flush with the end of the moving measuring block or is accommodated in the moving measuring block.

Through adopting above-mentioned technical scheme, will remove the measuring block and be fixed in an organic whole with the removal handle through the double-screw bolt.

Furthermore, the outer wall of the movable handle and the outer wall of the fixed handle are both provided with roller grains.

Through adopting above-mentioned technical scheme, set up the roll line on the outer wall of moving handle and fixed handle, through the roll line section on gripping moving handle and the fixed handle, will remove measuring block and fixed measuring block and stretch into stable measurement in the part.

Further, the wall thickness of the straight block is smaller than the groove width of the part groove.

Through adopting above-mentioned technical scheme, the width setting of with straight piece is less than the groove width in part groove, avoids the width of straight piece too big, leads to the ladder piece can't get into the part inslot and measure tube-shape class part.

Furthermore, the roughness of the two end faces of the movable measuring block and the fixed measuring block along the axial direction is 0.1 micrometer.

By adopting the technical scheme, the two ends of the movable measuring block and the fixed measuring block are processed to be 0.1 micrometer, so that when the two end faces of the movable measuring block and the fixed measuring block are abutted, the rough error of contact of the two end faces is reduced, and the measuring precision of the movable measuring block and the fixed measuring block on the inner part groove of the cylindrical part is high.

The utility model discloses following beneficial effect has:

the utility model discloses a grip fixed handle will fix in the measuring piece stretches into the part, with the one end of the tip butt part of fixed measuring piece, will remove the measuring piece through gripping the removal handle and stretch into the part in, will remove the fixed measuring piece of measuring piece butt, remove the measuring piece through removing, peg graft into the part inslot respectively with ladder piece and straight piece, if the ladder piece gets into the part inslot, the straight piece can't get into the part inslot then the part qualified, otherwise is unqualified.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

FIG. 1 is a schematic diagram of the overall structure of the preferred embodiment of the present invention

Fig. 2 is a schematic structural diagram of the mobile measuring block according to the preferred embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the fixed measuring block according to the preferred embodiment of the present invention.

Fig. 4 is a detail view measured by the preferred embodiment of the present invention.

Illustration of the drawings:

1. fixing the measuring component; 11. fixing the measuring block; 111. chamfering; 12. fixing a handle; 13. a connecting member; 131. a screw; 2. a mobile measurement assembly; 21. moving the handle; 22. moving the measuring block; 221. a step block; 222. a straight block; 23. a stud; 3. a small end; 4. a large end.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered below.

Example 1

As shown in fig. 1 and fig. 2, the present embodiment discloses a length gauge, the length gauge is used for measuring the position of a part slot inside a cylindrical part, the length gauge includes a fixed measuring component 1 and a movable measuring component 2, the fixed measuring component 1 is placed inside the cylindrical part, the movable measuring component 2 is moved along the cylindrical part, the movable measuring component 2 is connected with the fixed measuring component 1, and the movable measuring component 2 is moved inside the cylindrical part to detect whether the size of the part slot position is correct or not.

Referring to fig. 1 and 3, the fixed measuring assembly 1 comprises a fixed measuring assembly 1 and a fixed measuring block 11, wherein the fixed measuring assembly 1 comprises a fixed handle 12 and the fixed measuring block 11, the fixed measuring block 11 is in a circular plate shape, and the width of the fixed measuring block 11 is determined according to the size from a part groove to the end of a cylindrical part. Chamfers 111 are formed at both ends of the peripheral wall of the fixed measuring block 11. The fixed measuring block 11 is connected with a fixed handle 12 through a connecting piece 13. The connecting piece 13 is a screw 131, and the screw 131 is threaded through the fixed measuring block 11 and is in threaded connection with the fixed handle 12. The driving end of the screw 131 is flush with the end of the fixed measuring block 11, and the defect of overlarge measuring error caused by ejection of the end of the screw 131 can be avoided when the fixed measuring block 11 is used for measuring.

Referring to fig. 1 and 2, the movable measuring assembly 2 includes a movable measuring block 22 and a movable handle 21, a step block 221 and a straight block 222 are integrally formed at the upper end and the lower end of the movable measuring block 22, the height of the step block 221 is 3mm, and the side walls of the movable handle 21 and the fixed handle 12 are both provided with a roll line, so that an operator can conveniently grip the length gauge when using the length gauge. The roughness of two symmetrical parallel end faces of the movable measuring block 22 and the fixed measuring block 11 in the direction of the part groove is 0.1, so that the situation that the measuring error is large due to the fact that the end parts of the movable measuring block 22 and the fixed measuring block 11 are rough is reduced. One side of the straight block 222, which is far away from the fixed measuring block 11, forms a large end 4 with the end of the fixed measuring block 11, the step side wall of the step block 221 forms a small end 3 with the end of the fixed measuring block 11, the movable measuring block 22 is fixedly connected with the movable handle 21 through the stud 23, the driving end of the stud 23 is flush with the end of the movable measuring block 22, and therefore when the position of the part groove is measured by the movable measuring block 22, the stud 23 extends out of the movable measuring block 22 to cause a gap to be formed between the movable measuring block 22 and the fixed measuring block 11, and the position measuring error of the part groove is large. When measuring the part groove in the cylindrical part, the fixed handle 12 drives the fixed measuring block 11 to integrally enter the cylindrical part, the end part of the fixed measuring block 11 is flush with the end part of the cylindrical part, the movable measuring block 22 is driven to enter the cylindrical part by the movable handle 21, the movable measuring block 22 is abutted against the fixed measuring block 11 by the movable measuring block 22, the movable measuring block 22 moves up and down, if the stepped block 221 enters the part groove and the straight block 222 cannot enter the part groove, the part groove of the cylindrical part is accurate in position, namely the small end 3 enters the part groove and the large end 4 cannot enter the part groove; and when the small end 3 and the large end 4 both enter the part groove or the small end 3 and the large end 4 both cannot enter the part groove, the position of the part groove is wrong, and the cylindrical part is unqualified.

Referring to fig. 4, the length dimension 8.2(+0.1,0) shown in the product is measured, as can be taken from fig. 2: l is 8.2(+0.1,0), i.e. Lmin is 8.2, Lmax is 8.3, and deviation value T is 0.1.

Small end 3 ═ 0.03T ═ 8.2+0.005 ±. 0.03 × 0.1 ═ 8.205 ± 0.003;

tip 3 ═ 0.05T ═ 8.2+0.005 ±. 0.05 × 0.1 ═ 8.205 ± 0.005 (wear limit);

big end 4 ═ (Lmax-0.05T) ± (0.03T) ═ 8.3-0.005) ± (0.03 × 0.1 ═ 8.295 ± 0.003;

big end 4 ═ (Lmax-0.05T) ± (0.05T) ═ 8.3-0.005) ± (0.05 × 0.1 ═ 8.295 ± 0.005 (wear limit);

the surface B of the movable measuring component 2 slides along the surface D of the fixed measuring component 1 to the part groove direction, when the small end 3 passes through and the large end 4 does not pass through, the measured dimension is qualified, the wear limit of the small end 3 is 8.205 +/-0.005, and the wear limit of the large end 4 is 8.295 +/-0.005.

Example 2

The difference between this embodiment and embodiment 1 is that the connecting member 13 can be a pin, and a tapered pin is inserted into the fixed handle 12 through the fixed measuring block 11, so as to fix the fixed measuring block 11 and the fixed handle 12 integrally under the action of friction force.

Example 3

The present embodiment is different from embodiment 1 in that a thread groove is formed at one end of the movement measuring block 22 close to the movement handle 21, a thread is formed at one end of the movement measuring block 21 close to the movement measuring block 22, and the movement handle 21 and the movement measuring block 22 are fixed integrally by screwing the thread groove of the movement handle 21 and the movement measuring block 22.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A length gauge is used for measuring the position of a part groove of a cylindrical part, the part groove is arranged on the inner wall of the cylindrical part, a supporting surface corresponding to the part groove is further arranged in the cylindrical part, and the position of the part groove is measured by taking the supporting surface as a positioning reference, and the length gauge is characterized in that: the method comprises the following steps:

the fixed measuring component (1) is inserted into the cylindrical part, abuts against the bearing surface of the cylindrical part and is used for supporting;

the movable measuring component (2) is inserted into the cylindrical part and is used by being attached to the fixed measuring component (1) through the surface, and is used for measuring the position of the part groove.

2. A length gauge according to claim 1, wherein: the fixed measuring component (1) comprises a fixed handle (12) and a fixed measuring block (11), and the fixed measuring block (11) is fixedly connected with the fixed handle (12).

3. A length gauge according to claim 2, wherein: fixed measuring block (11) with be provided with connecting piece (13) between fixed handle (12), connecting piece (13) include screw (131), screw (131) screw thread is worn to establish fixed measuring block (11) with fixed handle (12) threaded connection, screw (131) are kept away from the one end of fixed handle (12) with the tip of fixed measuring block (11) flushes or accomodates in fixed measuring block (11).

4. A length gauge according to claim 2, wherein: chamfers (111) are arranged on two sides of the peripheral wall of the fixed measuring block (11).

5. A length gauge according to claim 2, wherein: remove measuring subassembly (2) including removing measuring block (22) and removal handle (21), remove handle (21) with fixed connection between removal measuring block (22), removal measuring block (22) are provided with ladder piece (221) towards the one end of tube-shape class part inner wall, and removal measuring block (22) are provided with straight piece (222) towards the other end of tube-shape class part inner wall, and institute's removal measuring block (22) butt in tube-shape class part fixed measuring block (11), ladder piece (221) with form tip (3) between fixed measuring block (11), straight piece (222) with form main aspects (4) between fixed measuring block (11).

6. A length gauge according to claim 5, wherein: the radial height of the step block (221) is less than 5 mm.

7. A length gauge according to claim 5, wherein: remove measuring block (22) with be provided with double-screw bolt (23) between removal handle (21), double-screw bolt (23) screw thread is worn to establish remove measuring block (22) and with removal handle (21) threaded connection, double-screw bolt (23) are kept away from the one end of removal handle (21) with the tip of removal measuring block (22) flushes or accomodates in removal measuring block (22).

8. A length gauge according to claim 5, wherein: the outer wall of the movable handle (21) and the outer wall of the fixed handle (12) are both provided with roller grains.

9. A length gauge according to claim 5, wherein: the wall thickness of the straight block (222) is smaller than the groove width of the part groove.

10. A length gauge according to claim 5, wherein: the roughness of two end faces of the movable measuring block (22) and the fixed measuring block (11) along the axial direction is 0.1 micrometer.