CN108981989A - A kind of device and its application method of detection axle sleeve interference fit faying face pressure - Google Patents
A kind of device and its application method of detection axle sleeve interference fit faying face pressure Download PDFInfo
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- CN108981989A CN108981989A CN201811175476.3A CN201811175476A CN108981989A CN 108981989 A CN108981989 A CN 108981989A CN 201811175476 A CN201811175476 A CN 201811175476A CN 108981989 A CN108981989 A CN 108981989A
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- 238000001514 detection method Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 230000008878 coupling Effects 0.000 claims abstract description 32
- 238000010168 coupling process Methods 0.000 claims abstract description 32
- 238000005859 coupling reaction Methods 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 238000012360 testing method Methods 0.000 claims description 48
- 239000000523 sample Substances 0.000 claims description 33
- 239000007787 solid Substances 0.000 claims description 15
- 238000002310 reflectometry Methods 0.000 claims description 14
- 230000013011 mating Effects 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/25—Measuring force or stress, in general using wave or particle radiation, e.g. X-rays, microwaves, neutrons
- G01L1/255—Measuring force or stress, in general using wave or particle radiation, e.g. X-rays, microwaves, neutrons using acoustic waves, or acoustic emission
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/26—Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
A kind of device and its application method of detection axle sleeve interference fit faying face pressure, including water tank, water tank are fixed on the horizontal movement transverse slat of full-automatic three-axis platform machine；Mirror symmetry offers through-hole on the left and right side tank wall of the water tank, left side drive shafts are equipped with inside the PATENT left side via of the water tank, the right end of left side drive shafts extends to the inside of water tank and is fixedly connected with single-iris shaft coupling, and the first omnipotent index dial is provided on the left of left side drive shafts；Right side transmission shaft is equipped with inside the right side through-hole of the water tank, the left end of right side transmission shaft is fixedly connected with single-iris shaft coupling, the second omnipotent index dial is provided on the right side of the transmission shaft of right side；The single-iris shaft coupling of the left and right sides is respectively connected with empty set clamp.In short, improving detection accuracy present invention decreases detection error, structure of the detecting device is optimized, keeps its disassembly more convenient, improves detection efficiency.
Description
Technical field
The present invention relates to ultrasound examination fields, and in particular to a kind of device of detection axle sleeve interference fit faying face pressure
And its application method.
Background technique
In the development of machinery industry, the contact condition of axle sleeve faying face largely affects the performance of assembly,
So the detection of faying face pressure increasingly becomes particularly important and urgent, but due to the closure of axle sleeve faying face, cause very
Difficulty goes to detect the size of its pressure, and not only detection accuracy does not often reach requirement traditional thin film sensor, but also is detecting
The original contact condition of faying face can be changed in the process, cause error larger, on the other hand, the dress of past detection axle sleeve cooperation
It sets and mostly places axle sleeve vertically, the inconvenience when bias and device when this may also will lead to adjustment angle dismount.
Chinese patent CN103822968B discloses a kind of pressure-ultrasonic reflection rate curve towards the detection of faying face pressure
Construction method calculates the ultrasonic reflection rate of each scanning element under different pressure first；Then fitting acquires initial pressure-reflection
Rate relationship；According to the initial pressure-reflectance relationship acquired, all scanning element pressure of faying face at various pressures are calculated, are obtained
To total pressure F of entire faying face: F is calculated calibration coefficient with the actual pressure F0 measured using pressure sensor；So
The pressure values Pi for recalculating each scanning element afterwards obtains revised pressure values Pi ', calculates faying face center under different pressures
Pressure is distributed the mean value P α of the pressure Pi ' of flat site scanning element, utilizes resulting P α reflectivity mean value corresponding with the region
R0 is fitted again acquires new pressure-reflectance curve, and the present invention constructs pressure-reflectance curve using iterative manner, can
Accurate pressure-reflectance relationship is constructed, realizes the accurate detection of faying face footprint pressure.
Summary of the invention
The present invention provides the device and its application method of a kind of detection axle sleeve interference fit faying face pressure, to be solved
Technical problem are as follows: the pressure-ultrasonic reflections rate for accurately detecting axle sleeve interference fit faying face reduces detection error, optimization
Structure of the detecting device keeps its disassembly more convenient, improves detection efficiency.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme:
A kind of device of detection axle sleeve interference fit faying face pressure, including water tank, the top surface removal of the water tank, water tank
It is fixed on the horizontal movement transverse slat of full-automatic three-axis platform machine；Mirror symmetry on the left and right side tank wall of the water tank
Through-hole is offered, the through-hole includes first through hole, the second through-hole and third through-hole, and first through hole, the second through-hole and third are logical
In left-right direction, diameter is most in three kinds of coaxial circular apertures for the first through hole for the coaxial circular aperture and axis of Kong Weisan kind different-diameter
Small and first through hole one end extends to the inside of water tank, and the other end of first through hole is connected to the second through-hole, and described second is logical
Diameter is placed in the middle in Kong San kind coaxial circular aperture and the other end of the second through-hole extends to the outside of water tank, and the third through-hole is three
Diameter is maximum in kind coaxial circular aperture and third through-hole is located between the second through-hole or so end face；Inside the PATENT left side via of the water tank
Left side drive shafts are equipped with, the axis of left side drive shafts is overlapped with the axis of the through-hole and the diameter of axle of left side drive shafts is less than
Outside framework oil seal, the outer diameter of the outside framework oil seal are provided at the aperture of one through-hole, left side drive shafts and first through hole mating connection
It is coupled with the second through-hole, internal diameter and the left side drive shafts of outside framework oil seal are coupled, and left side drive shafts are matched with third through-hole
It closes junction and is equipped with circlip, the right end of left side drive shafts extends to the inside of water tank and is fixedly connected with single-iris shaft coupling
Device is provided with the first omnipotent index dial on the left of left side drive shafts, and the left end of the left side drive shafts is fixedly connected on the 10000th
On first scroll chuck of energy index dial, the first omnipotent index dial is fixed on the first portal trestle；The right side of the water tank
Right side transmission shaft is equipped with inside side through hole, the axis of right side transmission shaft is overlapped with right side through-bore axis and the axis of right side transmission shaft
Diameter is less than the aperture of first through hole, and the outer diameter of the outside framework oil seal is coupled with the second through-hole, outside framework oil seal internal diameter and right side
Transmission shaft is coupled, and is equipped with circlip, the left end of right side transmission shaft at right side transmission shaft and third through-hole mating connection
It is fixedly connected with single-iris shaft coupling, the second omnipotent index dial is provided on the right side of the transmission shaft of right side, the right side transmission shaft
Right end is fixedly connected on the second scroll chuck of the second omnipotent index dial, and the second omnipotent index dial is fixed at second shape
On bracket；The single-iris shaft coupling of the left and right sides is respectively connected with empty set clamp, the empty set clamp include solid cylinder,
Hollow cylinder and tapped through hole, solid cylinder and hollow cylinder are fixedly and coaxially connected and solid cylinder and hollow cylinder
The axis of body is overlapped with the axis of the first through hole, and the outer diameter 20~100 that hollow cylinder inner diameter is greater than test suite is micro-
Rice, solid cylinder and single-iris shaft coupling are cooperatively connected, tapped through hole be arranged on the outer surface of hollow cylinder end and
For tapped through hole axis perpendicular to the axis of hollow cylinder, tapped through hole is uniformly arranged four around the axis of hollow cylinder, spiral shell
Fastening screw is fitted on line through-hole；The top face of the water tank is provided with ultrasonic probe, the ultrasonic probe
Positioned at the surface of the axis extended line of single-iris shaft coupling, ultrasonic probe is fixed at the perpendicular of full-automatic three-axis platform machine
To on sliding rail；Water tank is provided with water when test, and the bottom of ultrasonic probe and axle sleeve flood in water always.
Preferably, the different empty set clamp of two kinds of hollow cylinder inner diameters alternately part, hollow cylinder are at least set
Internal diameter is determined according to the outer diameter of test suite.
Preferably, the upper surface of first portal trestle is provided with the groove of rectangle, and the first omnipotent indexing pan bottom is solid
Surely it is provided with rectangular preiection portion, rectangular preiection portion is embedded in the rectangular recess of the first portal trestle upper surface.
A method of using above-mentioned apparatus, comprising the following steps:
(1) suitable empty set clamp is selected according to the outer diameter of test suite, then empty set clamp is respectively installed to left side
On the single-iris shaft coupling on right side, then one end of test suite is fitted into the hollow cylinder of the empty set clamp in left side and is adjusted
The other end of test suite is fitted into the hollow cylinder of the empty set clamp on right side and adjusts fastening spiral shell by the position for saving fastening screw
The position of nail, then fills water in water tank, floods the bottom of ultrasonic probe and axle sleeve always in water, and it is empty to start detection
Set, i.e., the test suite not being coupled with axis；
(2) using the ultrasonic probe on full-automatic three-axis platform machine according to certain step pitch, first along the axial direction of test suite
A line is swept, the indexing dial of the first omnipotent indexing disc side is then rotated, universal dividing head is made to rotate by a certain angle,
The first scroll chuck is set to drive left side drive shafts rotation, left side drive shafts drive single-iris shaft coupling to rotate and then drive empty set folder
Body rotation, empty set clamp drive test suite rotation, and test suite drives empty set clamp, single-iris shaft coupling, the right side transmission on right side
Axis and the rotation of the second scroll chuck, then the inner surface for making the focus of ultrasonic probe fall in test suite, then along the axis of test suite
To a line is swept, then adjust the angle again, and so on, the ultrasonic echo signal of each point of inner surface of test suite is measured,
Obtain the ultrasonic echo signal of each point on inner surface, as reference signal；
(3) axle sleeve after interference fit is detected, the both ends coverlet diaphragm coupling that axis is tested in axle sleeve clamps, remaining each portion
It is consistent when part is with assembling process with previous step survey empty set, after the assembly is completed, find starting point and axial direction that previous step surveys empty set
Track makes ultrasonic probe focus remain unchanged and falls in the inner surface of test suite, highly identical as last time, i.e. ultrasonic probe and test
The relative position of set adjusts full-automatic three-axis platform machine and moves horizontally step pitch and above-mentioned survey as position when previous step survey empty set
It is identical when empty set, make path of the ultrasonic probe along above-mentioned survey empty set when, repeats the process of above-mentioned detection empty set, measure last time
Each of survey ultrasonic echo signal, as faying face signal；
(4) Fourier transformation is carried out to reference signal and faying face signal, and calculates each scanning element with following formula
Reflectivity:
Wherein, R is ultrasonic reflection rate amplitude, and Hi is faying face signal amplitude, and Ho is reference signal amplitude under identical frequency,
The reflectivity composition reflection rate matrix of faying face all the points, obtains reflectivity mean value Ro, then by the relationship of reflectivity and pressure song
Line computation goes out the pressure Po of the corresponding faying face of reflectivity mean value Ro of scanning element.
Compared with the existing technology, the invention has the benefit that detecting pressure using ultrasonic probe, detection accuracy is high,
Detection error is small；Outside framework oil seal prevents water from revealing from water tank；Index dial is set, is used cooperatively with full-automatic three-axis platform machine,
Keep the displacement of detection process easier to control, to keep testing result more accurate；Single-iris shaft coupling is easy for installation, convenient for tearing open
It unloads, to improve detection efficiency.In short, improving detection accuracy present invention decreases detection error, detection device is optimized
Structure keeps its disassembly more convenient, improves detection efficiency.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the partial schematic diagram when present invention surveys axle sleeve；
Fig. 3 is the schematic perspective view of water tank of the present invention；
Fig. 4 is the top view of water tank of the present invention；
Fig. 5 is cross-sectional view of the Fig. 4 along B-B；
Fig. 6 is the first portal trestle structural schematic diagram of the present invention；
Fig. 7 is the second portal trestle structural schematic diagram of the present invention；
Fig. 8 is the schematic perspective view of empty set clamp of the present invention；
Fig. 9 is the partial view when present invention surveys empty set.
In figure: 1, water tank, 2, left side drive shafts, the 3, first scroll chuck, the 4, first omnipotent index dial, 5, first shape branch
Frame, 6, full-automatic three-axis platform machine, 7, single-iris shaft coupling 8, the second portal trestle, the 9, second omnipotent index dial, the 10, the 2nd 3
Dog chuck, 11, right side transmission shaft, 12, ultrasonic probe, 13, test axis, 14, test suite, 15, probe gripper, 16, empty set folder
Body, 101, first through hole, the 102, second through-hole, 103, third through-hole, 161, solid cylinder, 162, hollow cylinder, 163,
Tapped through hole.
Specific embodiment
With reference to the accompanying drawing, the present invention will be further described.
A kind of device of detection axle sleeve interference fit faying face pressure, including water tank 1, as shown in figure 3, the water tank 1
Top surface removal, water tank 1 is fixed on the horizontal movement transverse slat of full-automatic three-axis platform machine 6, i.e., before and after the bottom of water tank 1
A cuboid is respectively arranged in direction, opened on cuboid block there are three equidistant conllinear distance between counterbore, counterbore etc. with
The spacing through threaded hole on full-automatic 6 transverse slat of three-axis platform machine, and the unthreaded hole diameter of counterbore lower part is slightly larger than on transverse slat
Then cabinet is connect by the diameter of threaded hole by three perforative counterbores with screw with the transverse slat on full-automatic three-axis platform machine 6
At one piece；As shown in Figure 4 and Figure 5, mirror symmetry offers through-hole, the through-hole on the left and right side tank wall of the water tank 1
Including first through hole 101, the second through-hole 102 and third through-hole 103, first through hole 101, the second through-hole 102 and third through-hole 103
For three kinds of different-diameters coaxial circular aperture and axis in left-right direction, the first through hole 101 diameter in three kinds of coaxial circular apertures
Minimum and first through hole 101 one end extends to the inside of water tank 1, and the other end of first through hole 101 extends and the second through-hole 102
Connection, diameter is between two parties in three kinds of coaxial circular apertures and the other end of the second through-hole 102 extends to water tank 1 for second through-hole 102
Outside, the third through-hole 103 diameter in three kinds of coaxial circular apertures is maximum and third through-hole 103 is located at 102 left side of the second through-hole
Between right side.
As shown in Figure 1, being equipped with left side drive shafts 2, the axis of left side drive shafts 2 inside the PATENT left side via of the water tank 1
It is overlapped with the axis of the through-hole and the diameter of axle of left side drive shafts 2 is less than the aperture of first through hole 101, left side drive shafts 2 and the
Outside framework oil seal is provided at two through-holes, 102 mating connection, the outer diameter of the outside framework oil seal and the second through-hole 102 interference fit are pacified
Dress, outside framework oil seal internal diameter and the interference fit of left side drive shafts 2 are installed, and are worn at left side drive shafts 2 and 103 mating connection of third through-hole
Equipped with circlip, the right end of left side drive shafts 2 extends to the inside of water tank 1 and is fixedly connected with single-iris shaft coupling 7, left side
The left side of transmission shaft 2 is provided with the first omnipotent index dial 4, and the left end of the left side drive shafts 2 is fixedly connected on first omnipotent point
On first scroll chuck 3 of scale 4, the first omnipotent index dial 4 is fixed on the first portal trestle 5, as shown in fig. 6, institute
The upper surface for stating the first portal trestle 5 is provided with the groove of rectangle, and the first omnipotent 4 bottom of index dial is fixedly installed rectangular preiection
Portion, rectangular preiection portion are embedded in the rectangular recess of 5 upper surface of the first portal trestle.
As shown in Figure 1, being equipped with right side transmission shaft 11, the axis of right side transmission shaft 11 inside the right side through-hole of the water tank 1
Line is overlapped with right side through-bore axis and the diameter of axle of right side transmission shaft 11 is less than the aperture of first through hole 101, the outside framework oil seal
Outer diameter and the second through-hole 102 interference fit are installed, and internal diameter and right side transmission shaft 11 interference fit of outside framework oil seal are installed, and right side passes
It is equipped with circlip at moving axis 11 and 103 mating connection of third through-hole, the left end of right side transmission shaft 11 is fixedly connected with monofilm
Piece shaft coupling 7, the right side of right side transmission shaft 11 are provided with the second omnipotent index dial 9, and the right end of the right side transmission shaft 11 is fixed
It is connected on the second scroll chuck 10 of the second omnipotent index dial 9, the second omnipotent index dial 9 is fixed at the second portal trestle
On 8, as shown in fig. 7,8 top of the second portal trestle is provided with each two of two column symmetrically through threaded hole, the second omnipotent index dial 9
Bottom rectangular block be provided with two column through-holes along center line two sides, by screw by the second omnipotent 9 bottom platform through-hole of index dial with
The connection through threaded hole on 8 top of the second portal trestle.
The single-iris shaft coupling 7 of the left and right sides is respectively connected with empty set clamp 16, as shown in figure 8, the empty set clamp
16 include solid cylinder 161, hollow cylinder 162 and tapped through hole 163, and solid cylinder 161 and hollow cylinder 162 are same
Axis is fixedly connected and axis weight of the axis of solid cylinder 161 and hollow cylinder 162 with the first through hole 101
It closes, solid cylinder 161 and single-iris shaft coupling 7 are cooperatively connected, and 162 end of hollow cylinder is arranged in tapped through hole 163
On outer surface and 163 axis of tapped through hole is perpendicular to the axis of hollow cylinder 162, and tapped through hole (163) is around hollow cylinder
(162) axis is uniformly arranged four, and fastening screw is fitted on tapped through hole 163, and two kinds of hollow cylinders are at least arranged
Alternately part, 162 internal diameter of hollow cylinder are true according to the outer diameter of test suite 14 for the different empty set clamp 16 of 162 internal diameter of body
Fixed, i.e., 162 internal diameter of hollow cylinder is greater than 20~100 microns of outer diameter of test suite 14.
As shown in Fig. 2, the top face of the water tank 1 is provided with ultrasonic probe 12, Olympic bar is used in the present embodiment
This V319 type 15MHz immersion type focusing probe, the ultrasonic probe 12 are being located at the axis extended line of single-iris shaft coupling 7 just
Top, ultrasonic probe 12 are fixed in the vertical rails of full-automatic three-axis platform machine 6 by probe gripper 15, Ke Yishi
The movement of existing left-right and front-back and up and down direction.
A kind of device of detection axle sleeve interference fit faying face pressure provided by the invention, it is in actual use, first
Suitable empty set clamp 16 is first selected according to the outer diameter of test suite 14, then empty set clamp 16 is respectively installed to left side and the right side
On the single-iris shaft coupling 7 of side, then one end of test suite 14 is fitted into the hollow cylinder 162 of the empty set clamp 16 in left side
And the position of fastening screw is adjusted, the other end of test suite 14 is fitted into the hollow cylinder 162 of the empty set clamp 16 on right side
And the position of fastening screw is adjusted, water then is filled in water tank 1, the bottom of ultrasonic probe 12 and axle sleeve is made to be submerged in water always
In, start detect empty set, i.e., the test suite 14 not being coupled with axis, as shown in Figure 9.
Then as shown in figure 9, using the ultrasonic probe 12 on full-automatic three-axis platform machine 6 according to certain step pitch, first
A line is swept along the axial direction of test suite 14, the indexing dial of the first omnipotent 4 side of index dial is then rotated, makes omnipotent point
Degree head rotates by a certain angle, and makes the first scroll chuck 3 that left side drive shafts 2 be driven to rotate, and left side drive shafts 2 drive single-iris shaft coupling
Device 7 rotates and then empty set clamp 16 is driven to rotate, and empty set clamp 16 drives test suite 14 to rotate, and test suite 14 drives the sky on right side
Clamp 16, single-iris shaft coupling 7, right side transmission shaft 11 and the rotation of the second scroll chuck 10 are covered, then makes the coke of ultrasonic probe 12
Point falls in the inner surface of test suite 14, and then the axial direction along test suite 14 sweeps a line, then adjusts the angle again, and so on,
The ultrasonic echo signal of each point of inner surface of test suite 14 is measured, utilizes Olympus V319 type 15MHz in the present embodiment
Immersion type focusing probe is scanned test suite 14, and sharp 5072PR type ultrasonic pulse generation/receiver emits and receives super
Sound wave pulse is carried out receiving display waveform and be saved on computer, obtains using TEKTRONIX digital oscilloscope TBS 1052B
The ultrasonic echo signal of each point, as reference signal on inner surface.
Then starting the axle sleeve after detection is interference fitted, the both ends coverlet diaphragm coupling 7 that axis 13 is tested in axle sleeve clamps,
It is consistent when remaining each component is with assembling process with above-mentioned survey empty set, after the assembly is completed, find the starting point and axis of above-mentioned survey empty set
To track, so that 12 focus of ultrasonic probe is remained unchanged and fall in the inner surface of test suite 14, highly identical as last time, i.e., ultrasonic wave is visited
First 12 with the relative position of test suite 14 with above-mentioned survey empty set when position as, adjust full-automatic three-axis platform machine 6 and move horizontally
It is identical when step pitch is with above-mentioned survey empty set, make path of the ultrasonic probe 12 along above-mentioned survey empty set when, repeats above-mentioned detection empty set
Process, measure last time survey each of ultrasonic echo signal, as faying face signal.
Next Fourier transformation is carried out to reference signal and faying face signal, and calculates each scanning with following formula
The reflectivity of point.
Wherein, R is ultrasonic reflection rate amplitude, and Hi is faying face signal amplitude, and Ho is reference signal amplitude under identical frequency,
The reflectivity composition reflection rate matrix of faying face all the points, obtains reflectivity mean value Ro.
Finally pressure-ultrasonic reflection rate towards the detection of faying face pressure according to disclosed in Chinese patent CN103822968B
Pressure-reflectance curve made from curve construction method calculates the pressure of the corresponding faying face of reflectivity mean value Ro of scanning element
Po。
In short, the present invention accurately detects pressure-ultrasonic reflections rate of axle sleeve interference fit faying face, detection is reduced
Error optimizes structure of the detecting device, keeps its disassembly more convenient, improves detection efficiency.
Claims (4)
1. a kind of device of detection axle sleeve interference fit faying face pressure, it is characterised in that: including water tank (1), the water tank (1)
Top surface removal, water tank (1) is fixed on the horizontal movement transverse slat of full-automatic three-axis platform machine (6)；The water tank (1)
Mirror symmetry offers through-hole on left and right side tank wall, the through-hole include first through hole (101), the second through-hole (102) and
Third through-hole (103), first through hole (101), the second through-hole (102) and third through-hole (103) are the coaxial of three kinds of different-diameters
Circular hole and axis is in left-right direction, the first through hole (101) diameter in three kinds of coaxial circular apertures is minimum and first through hole (101)
One end extend to the inside of water tank (1), the other end of first through hole (101) is connected to the second through-hole (102), and described second is logical
Hole (102) diameter in three kinds of coaxial circular apertures is placed in the middle and the other end of the second through-hole (102) extends to the outside of water tank (1), institute
Stating third through-hole (103), diameter is maximum in three kinds of coaxial circular apertures and third through-hole (103) is located at the second through-hole (102) left and right end
Between face；Be equipped with left side drive shafts (2) inside the PATENT left side via of the water tank (1), the axis of left side drive shafts (2) with it is described
The axis of through-hole is overlapped and the diameter of axle of left side drive shafts (2) is less than the aperture of first through hole (101), left side drive shafts (2) and the
Outside framework oil seal is provided at one through-hole (101) mating connection, the outer diameter of the outside framework oil seal and the second through-hole (102) cooperation are pacified
Dress, internal diameter and the left side drive shafts (2) of outside framework oil seal are coupled, and left side drive shafts (2) and third through-hole (103) are cooperatively connected
Place is equipped with circlip, and the right end of left side drive shafts (2) extends to the inside of water tank (1) and is fixedly connected with single-iris shaft coupling
Device (7) is provided with the first omnipotent index dial (4) on the left of left side drive shafts (2), and the left end of the left side drive shafts (2) is fixed
It is connected on the first scroll chuck (3) of the first omnipotent index dial (4), the first omnipotent index dial (4) is fixed at first
On shape bracket (5)；Right side transmission shaft (11), the axis of right side transmission shaft (11) are equipped with inside the right side through-hole of the water tank (1)
Line is overlapped with right side through-bore axis and the diameter of axle of right side transmission shaft (11) is less than the aperture of first through hole (101), the skeleton oil
The outer diameter of envelope is coupled with the second through-hole (102), and outside framework oil seal internal diameter is coupled with right side transmission shaft (11), right side transmission
It is equipped with circlip at axis (11) and third through-hole (103) mating connection, the left end of right side transmission shaft (11) is fixedly connected with
Single-iris shaft coupling (7) is provided with the second omnipotent index dial (9), the right side transmission shaft on the right side of right side transmission shaft (11)
(11) right end is fixedly connected on the second scroll chuck (10) of the second omnipotent index dial (9), and the second omnipotent index dial (9) is solid
It is fixed to be arranged on the second portal trestle (8)；The single-iris shaft coupling (7) of the left and right sides is respectively connected with empty set clamp (16),
The empty set clamp (16) includes solid cylinder (161), hollow cylinder (162) and tapped through hole (163), solid cylinder
(161) it is fixedly and coaxially connected with hollow cylinder (162) and the axis of solid cylinder (161) and hollow cylinder (162) is equal
Be overlapped with the axis of the first through hole (101), hollow cylinder (162) internal diameter be greater than test suite (14) outer diameter 20~
100 microns, solid cylinder (161) and single-iris shaft coupling (7) are cooperatively connected, and tapped through hole (163) is arranged in hollow cylinder
On the outer surface of body (162) end and axis of tapped through hole (163) axis perpendicular to hollow cylinder (162), tapped through hole
(163) axis around hollow cylinder (162) is uniformly arranged four, and tapped through hole is fitted with fastening screw on (163)；Institute
The top face for stating water tank (1) is provided with ultrasonic probe (12), and the ultrasonic probe (12) is located at single-iris shaft coupling (7)
Axis extended line surface, ultrasonic probe (12) is fixed in the vertical rails of full-automatic three-axis platform machine (6)；
Water tank (1) is provided with water when test, and the bottom of ultrasonic probe (12) and axle sleeve flood in water always.
2. a kind of device of detection axle sleeve interference fit faying face pressure according to claim 1, it is characterised in that: at least
Two kinds of different empty set clamps (16) of hollow cylinder (162) internal diameter alternately part, hollow cylinder (162) internal diameter are set
It is determined according to the outer diameter of test suite (14).
3. a kind of device of detection axle sleeve interference fit faying face pressure according to claim 1 or 2, it is characterised in that:
The upper surface of first portal trestle (5) is provided with the groove of rectangle, and the first omnipotent index dial (4) bottom is fixedly installed square
Shape lug boss, rectangular preiection portion are embedded in the rectangular recess of the first portal trestle (5) upper surface.
4. a kind of method using above-mentioned apparatus, comprising the following steps:
(1) suitable empty set clamp (16) is selected according to the outer diameter of test suite (14), then empty set clamp (16) is pacified respectively
It is attached on the single-iris shaft coupling (7) of left and right side, one end of test suite (14) is then packed into the empty set clamp in left side
(16) in hollow cylinder (162) and the position of fastening screw is adjusted, the other end of test suite (14) is packed into the sky on right side
It covers in the hollow cylinder (162) of clamp (16) and the position for adjusting fastening screw makes ultrasound then in water tank (1) built-in water
The bottom of wave probe (12) and axle sleeve flood in water always, start to detect empty set, i.e., the test suite not being coupled with axis
(14)；
(2) using the ultrasonic probe (12) on full-automatic three-axis platform machine (6) according to certain step pitch, first along test suite (14)
Axial direction sweep a line, then rotate the first omnipotent index dial (4) side indexing dial, rotate universal dividing head
Certain angle, makes the first scroll chuck (3) to drive left side drive shafts (2) rotation, and left side drive shafts (2) drive single-iris shaft coupling
(7) empty set clamp (16) rotation is rotated and then drives, empty set clamp (16) drives test suite (14) rotation, and test suite (14) drives
Empty set clamp (16), single-iris shaft coupling (7), right side transmission shaft (11) and the second scroll chuck (10) rotation on right side, then make
The focus of ultrasonic probe (12) falls in the inner surface of test suite (14), and then the axial direction along test suite (14) sweeps a line, so
It adjusts the angle again afterwards, and so on, the ultrasonic echo signal of each point of inner surface of test suite (14) is measured, inner surface is obtained
The ultrasonic echo signal of upper each point, as reference signal；
(3) axle sleeve after interference fit is detected, the both ends coverlet diaphragm coupling (7) that axis (13) are tested in axle sleeve clamps, remaining
It is consistent when each component is with assembling process with previous step survey empty set, after the assembly is completed, find starting point and axis that previous step surveys empty set
To track, so that ultrasonic probe (12) focus is remained unchanged and fall in the inner surfaces of test suite (14), it is highly identical as last time, i.e., it is ultrasonic
Wave pops one's head in (12) and the relative position of test suite (14) as position when previous step survey empty set, adjusts full-automatic three-axis platform machine
(6) identical when moving horizontally step pitch with above-mentioned survey empty set, make path of the ultrasonic probe (12) along above-mentioned survey empty set when, repeats
The process of above-mentioned detection empty set measures each of last time survey ultrasonic echo signal, as faying face signal；
(4) Fourier transformation is carried out to reference signal and faying face signal, and calculates the anti-of each scanning element with following formula
Penetrate rate:
Wherein, R is ultrasonic reflection rate amplitude, and Hi is faying face signal amplitude, and Ho is reference signal amplitude under identical frequency, in conjunction with
The reflectivity composition reflection rate matrix of face all the points, obtains reflectivity mean value Ro, then the relation curve meter by reflectivity and pressure
Calculate the pressure Po of the corresponding faying face of reflectivity mean value Ro of scanning element.
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| CN108981989B (en) | 2024-01-26 |
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