CN216385345U

CN216385345U - Hand-operated radial run-out measuring device

Info

Publication number: CN216385345U
Application number: CN202121066962.9U
Authority: CN
Inventors: 豆亚锋; 陈涛; 王艳芳; 郑晓迪; 王磊; 马文斌; 赵浩; 刘颖; 侯肖飞
Original assignee: State Owned 803 Factory
Current assignee: State Owned 803 Factory
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2022-04-26
Anticipated expiration: 2031-05-18

Abstract

The utility model provides a hand-operated radial runout measuring device, belongs to the technical field of machining and manufacturing of empennage parts, and particularly relates to a detecting device for measuring empennage radial runout errors through an indicating meter. A hand-operated radial run-out measuring device comprises a bottom plate, a box body, a hand-operated mechanism, a rotation measuring mechanism and a positioning joint; the hand-operated mechanism comprises a rotating shaft, a front gland, a short shaft sleeve, a bushing, a bearing, a rear gland and an L-shaped handle; the rotation measuring mechanism comprises a shaft, a long shaft sleeve and a handle rod; the inner taper hole of the large end face of the positioning joint is matched and connected with the outer taper surface of the rotating shaft, and the positioning joint is fixed on the rotating shaft through a screw. The radial runout error measurement of the empennage is quickly realized through a hand-cranking mode. The design of the hand-operated mechanism and the rotary measuring mechanism enables the product to be quickly and conveniently assembled and disassembled, the positioning is stable and reliable, the measured data is accurate and consistent, and the detection efficiency is effectively improved.

Description

Hand-operated radial run-out measuring device

Technical Field

The utility model relates to the technical field of machining and manufacturing of empennage parts, in particular to a detection device for measuring empennage radial run-out errors through an indicator.

Background

The inner shape of the empennage part generally comprises a conical surface, threads and a light hole, and the conical surface, the threads and the light hole have higher coaxiality requirements. In order to ensure the service performance of the tail wing, the radial run-out error on the excircle of the tail wing fin is measured by taking a part inner type liner as a reference (namely reference K), as shown in figure 1.

In scientific research and production, a pendulum error meter is generally adopted for measurement. The structure of the pendulum error meter is shown in figure 2, wherein a limiting rod II and two bearing seats VI are fixed with a base plate I through screws, a limiting bearing III is fixed at the top of the limiting rod, a meter frame VIII is arranged in a T-shaped groove of the base plate and is fixed according to the measured position, and an indicator VII is fixed on the meter frame through a clamping rod. Before measurement, the indicating gauge is calibrated by using a standard product, the standard product is taken down after calibration, a part to be measured is screwed to the joint position of the measuring rod IV, the measuring rod is stably placed on the four bearings V, the tail part of the measuring rod is tightly propped against the limiting bearings, and the part is detected by rolling the measuring rod.

The detection method can meet the requirements of small-batch production, but has the following defects in the large-batch production:

1. the replaceability is not good; the measuring tool needs to be redesigned and manufactured aiming at the empennages of different models of products, and the universality and the replaceability are not strong.

2. The measuring rod has high processing precision; the measuring rod is a key part for realizing measurement, and the conical surfaces, threads and optical axes of the measuring reference rod and the head part of the measuring rod have to meet higher coaxiality requirements, so that the requirements on the machining size and the precision of the measuring rod are high.

3. The assembly and disassembly of parts are inconvenient; during the measurement, the part needs manual the screwing to the measuring stick, and it is harder when the too tight of screwing is unloaded, and too loose can influence measuring effect. Therefore, for mass production, the detection efficiency is not high and the labor intensity is high.

4. The reference surface is easy to damage; the measuring rod can be randomly placed under the condition of nonuse except that certain abrasion exists between the measuring rod and the bearing when in use, and damages which influence the measuring precision such as collision, fouling and the like are caused to the reference part and the positioning part.

5. The stability is poor; during detection, the limit bearing is tightly jacked by hand, and when the measuring rod is rolled, axial movement sometimes occurs, so that the detection result is unstable.

In order to meet the requirement of mass production, improve the detection efficiency and ensure the stability of detection, the measuring device is innovatively designed.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a hand-operated radial run-out measuring device, which can quickly realize the measurement of the radial run-out error of an empennage in a hand-operated mode. The design of the hand-operated mechanism and the rotary measuring mechanism enables the product to be quickly and conveniently assembled and disassembled, the positioning is stable and reliable, the measured data is accurate and consistent, and the detection efficiency is effectively improved.

The technical scheme of the utility model is as follows: a hand-operated radial run-out measuring device is characterized by comprising a bottom plate, a box body, a hand-operated mechanism, a rotation measuring mechanism and a positioning joint; the hand-operated mechanism comprises a rotating shaft, a front gland, a short shaft sleeve, a bushing, a bearing, a rear gland and an L-shaped handle; a rotating shaft is arranged in a round hole at the lower left of the box body, and the short shaft sleeve, the bush and the bearing are positioned in the box body; the rotating shaft is provided with a front gland, a first bearing, a bushing and a second bearing in sequence from a step surface close to the large end of the rotating shaft to the small end in the axial direction; the short shaft sleeve is positioned outside the bushing; the rear gland compresses the end part of the second bearing, and the L-shaped handle is positioned at the small end part of the rotating shaft; the rotation measuring mechanism comprises a shaft, a long shaft sleeve and a handle rod; a long shaft sleeve is arranged between the threaded end of the shaft and the middle step surface of the shaft; the middle step surface is connected with a handle rod through threads; the extending part of the shaft is fixed with an upper meter frame; the shaft penetrates through the small round hole at the upper right of the box body, and the long shaft is sleeved on the small round hole at the upper right of the box body; the inner taper hole of the large end face of the positioning joint is matched and connected with the outer taper surface of the rotating shaft, and the positioning joint is fixed on the rotating shaft through a screw.

Further, the positioning joint is in threaded connection with the inner hole of the product.

Furthermore, an L-shaped stop lever is arranged in a threaded hole at the top of the box body close to the rotation measuring mechanism and is fixed through a nut.

Furthermore, the hand-operated mechanism and the rotary measuring mechanism are fixed on the box body and are fixedly connected with the bottom plate through four screws.

Furthermore, a hand-cranking mechanism is arranged in a round hole at the lower left of the box body, and a rotary measuring mechanism is arranged in a small round hole at the upper right.

Further, a front gland, a first bearing, a bushing, a second bearing, a washer and a nut are sequentially arranged from the step surface close to the large end of the rotating shaft to the small end in the axial direction of the rotating shaft.

Further, a long shaft sleeve, a washer and a nut are sequentially arranged on the threaded end of the driven shaft and the middle step surface of the shaft.

Furthermore, the box body is provided with a limit screw and an L-shaped stop lever, so that the rotation range of the watch frame is controlled between 0 and 90 degrees.

Furthermore, the positioning joint is used for fixing the part to be measured, and the external thread, the conical surface and the optical axis of the positioning joint are matched with the internal shape of the part to be measured for positioning.

Further, the handle ball is connected with the handle rod.

The detection device has the advantages that:

1. the structure is simple, and the operation is convenient; the detection device has simple and compact integral structure and simple assembly mode, only needs to shake the handle when in use,

2. the parts can be assembled and disassembled quickly and conveniently; the part is placed on the positioning joint to be held tightly, the handle is shaken, the part is fastened through anticlockwise rotation, and the part is loosened through clockwise rotation. After the parts are fastened, the handle is shaken reversely for one circle, and then the detection of the parts can be completed.

3. The detection consistency is good; when the standard product is used for checking, the position of the meter frame is adjusted to be fixed, the position of the meter frame is kept unchanged during each measurement, the measuring points can be basically located at the same position after the parts are positioned and fixed, and the measurement consistency is good.

4. The core piece is convenient to process; the positioning joint is short and small, and only the conical surface, the threads and the unthreaded hole are coaxial, so that the machining difficulty is relatively low.

5. The replaceability is good, and the universality is strong; for the empennages of different products, only the positioning connector and the standard product need to be replaced, and the other parts can be used as universal parts after being assembled.

Drawings

FIG. 1 is a drawing of a part to be tested

FIG. 2 is a structure diagram of a pendulum error meter

FIG. 3 is a right side view of the radial run-out measurement apparatus of the present invention

FIG. 4 is a front view of the radial run-out measuring device of the present invention

FIG. 5 is a sectional view of the hand-operated mechanism of the radial run-out measuring device of the present invention

FIG. 6 is a front view of a rotation measuring mechanism of the radial run-out measuring device of the present invention

FIG. 7 is a front view of a radial run-out measuring device positioning joint of the present invention

Detailed Description

The utility model relates to a hand-operated radial run-out measuring device which mainly comprises a bottom plate 1, a box body 2, an L-shaped stop rod 15, a hand-operated mechanism, a rotation measuring mechanism and a positioning joint, wherein the structural assembly relation is shown in a figure 3 and a figure 4.

1 structural composition

The box body 2 mainly plays a role in fixing the positions of the hand-operated mechanism and the rotary measuring mechanism and is fixedly connected with the bottom plate 1 through four screws. A hand-cranking mechanism is arranged in a round hole at the lower left of the box body 2, and a rotary measuring mechanism is arranged in a small round hole at the upper right. An L-shaped stop lever is arranged in a threaded hole at the top of the box body close to the rotary measuring mechanism and is fixed through a nut, and the L-shaped stop lever mainly plays a limiting role, as shown in fig. 3.

The hand-operated mechanism is shown in figure 5 and comprises a rotating shaft 17, a front gland 16, a bearing 11, a short shaft sleeve 14, a bushing 13, a bearing, a washer 10 and a nut 8; a rear gland 9 and an L-shaped handle 7.

A rotating shaft 17, a bearing 11, a short shaft sleeve 14, a bush 13, a bearing, a washer 10 and a nut 8 are arranged in a left lower round hole of the box body 2.

A front gland 16, a first bearing 11, a bushing 13, a second bearing, a washer 10 and a nut 8 are sequentially arranged from a step surface close to the large end of the rotating shaft to the small end in the axial direction of the rotating shaft 17, and a short shaft sleeve 14 is positioned outside the bushing 13.

The rear gland 9 compresses the second bearing end and the L-shaped handle 7 is located at the small end of the rotating shaft 17.

The nut is screwed down to lead the bearing, the bush and the short shaft sleeve to be sleeved on the rotating shaft and not to axially move, the bearing, the bush and the short shaft sleeve are arranged in a hole at the lower left corner of the box body 1 after being screwed down, then the rear gland 9 and the L-shaped handle 7 are arranged in the hole from the small end of the rotating shaft, the front gland, the rear gland and the box body are screwed down and fixed by screws, and the L-shaped handle is fixed at the small end of the rotating shaft by set screws.

The rotation measuring mechanism comprises a shaft 19, a long shaft sleeve 12, a handle lever 4 and a handle ball 3.

The long shaft sleeve 12, the washer and the nut are sequentially arranged on the threaded end of the driven shaft 19 and the middle step surface of the shaft; the middle step surface is connected with a handle rod 4 through threads; the extended portion of the shaft fixes the upper case 6.

The shaft 19 passes through a small round hole at the upper right of the box body, and the long shaft sleeve 12 is positioned in the small round hole at the upper right of the box body.

Rotation measuring mechanism referring to fig. 6, the long boss 12, washer and nut are installed in sequence from the threaded end of the shaft 19 axially and against the central step face of the shaft. The nut is screwed up to ensure that the long shaft sleeve cannot axially float on the shaft, but the shaft can radially rotate in the long shaft sleeve, the long shaft sleeve is arranged in a matching hole at the upper right corner of the box body after being screwed up, and the shaft is fixed on the box body through the interference fit of the excircle of the long shaft sleeve and the matching hole of the box body. After the fixing is finished, a handle rod 4 and a handle ball 3 are installed on the middle step surface of the shaft through threaded connection, and an upper meter frame 6 and an indicating meter 5 are fixed on the extension part of the shaft through screws according to the measurement requirement.

The positioning joint 18 is shown in fig. 7, and the inner taper hole of the large end face is matched and connected with the outer taper surface of the rotating shaft 17 and fixed on the rotating shaft 17 through three screws.

The positioning joint is in threaded connection with an inner hole of a product and is used for fixing the product.

2 method of use

In the radial run-out measuring apparatus, a hand-operated mechanism is used for quickly attaching and detaching a measured part and for performing circumferential rotation during detection. The rotary measuring mechanism is used for fixing the meter frame, so that the measuring head of the indicating meter is arranged at the same position of a measured part when measuring at each time, and the rotating range of the meter frame is controlled to be 0-90 degrees because the box body is provided with the limiting screw and the L-shaped stop rod, so that the indicating meter is prevented from being damaged due to the rotation of the meter frame. The positioning joint is used for fixing the part to be measured, the external thread, the conical surface and the optical axis of the positioning joint are matched and positioned with the internal shape of the part to be measured, and the requirements on size calculation and coaxiality are high.

Before the device is used, a standard product is used for zero calibration of the indicating meter. After screwing up the location with the standard substance on the attach fitting, wave the rotatory a week of L type handle and transfer the zero position with the instruction list table value, then take off the standard substance, will be surveyed the part and adorn, rotatory table pole is pressed the instruction list at surveyed the part surface, slowly wave the rotatory a week of L type handle and observe the instruction list value, judge whether qualified according to the numerical value size part.

Aiming at different tested parts, the structure of the device does not need to be redesigned and manufactured, only a new positioning joint needs to be replaced, and the device has good replaceability and strong universality.

Claims

1. A hand-operated radial run-out measuring device is characterized by comprising a bottom plate (1), a box body (2), a hand-operated mechanism, a rotation measuring mechanism and a positioning joint;

the hand-operated mechanism comprises a rotating shaft (17), a front gland (16), a short shaft sleeve (14), a bushing (13), a bearing, a rear gland (9) and an L-shaped handle (7); a rotating shaft (17) is arranged in a round hole at the lower left of the box body, and the short shaft sleeve (14), the bush (13) and the bearing are positioned in the box body; the rotating shaft (17) is provided with a front gland (16), a first bearing, a bushing (13) and a second bearing in sequence from the step surface close to the large end of the rotating shaft to the small end in the axial direction; the short shaft sleeve (14) is positioned outside the bushing (13); the rear gland (9) compresses the end part of the second bearing, and the L-shaped handle (7) is positioned at the small end part of the rotating shaft (17);

the rotary measuring mechanism comprises a shaft (19), a long shaft sleeve (12) and a handle rod (4); a long shaft sleeve (12) is arranged between the threaded end of the shaft (19) and the middle step surface of the shaft; the middle step surface is connected with a handle rod (4) through threads; the extending part of the shaft is fixed with an upper watch frame (6); the shaft (19) penetrates through the small round hole at the upper right of the box body, and the long shaft sleeve (12) is positioned in the small round hole at the upper right of the box body;

the inner taper hole of the large end face of the positioning joint is matched and connected with the outer taper surface of the rotating shaft (17), and the positioning joint is fixed on the rotating shaft (17) through a screw.

2. A hand-operated radial run-out measuring device as claimed in claim 1, wherein the locating nipple is in threaded connection with the inner bore of the product.

3. A hand-operated radial run-out measuring device as claimed in claim 1, characterized in that an L-shaped stop lever is arranged in a threaded hole in the top of the box body close to the rotation measuring mechanism and is fixed by a nut.

4. The hand-operated radial runout measuring device according to claim 1, wherein the hand-operated mechanism and the rotation measuring mechanism are fixed on the box body and are fixedly connected with the bottom plate through four screws.

5. A hand-operated radial run-out measuring device as claimed in claim 1, characterized in that a hand-operated mechanism is arranged in a round hole at the lower left of the box body, and a rotary measuring mechanism is arranged in a small round hole at the upper right.

6. A hand-operated radial run-out measuring device as claimed in claim 1, wherein the front gland, the first bearing, the bushing, the second bearing, the washer and the nut are arranged in this order from the step surface next to the large end of the rotating shaft to the small end in the axial direction of the rotating shaft.

7. The hand-operated radial run-out measuring device as claimed in claim 1, wherein the long shaft sleeve, the washer and the nut are sequentially arranged from the threaded end of the shaft to the middle step surface of the shaft.

8. The hand-operated radial run-out measuring device according to claim 1, wherein the case body is provided with a limit screw and an L-shaped stop rod, so that the rotation range of the watch frame is controlled to be 0-90 degrees.

9. A hand-operated radial run-out measuring device as claimed in claim 1, wherein the locating joint is used for fixing the measured part, and the external thread, the conical surface and the optical axis of the locating joint are matched with the internal shape of the measured part for location.

10. A hand-operated radial runout measuring device according to claim 1, further comprising a handle ball (3) connected to the handle shaft (4).