CN108489438B - Contact type hole making quality detection method - Google Patents
Contact type hole making quality detection method Download PDFInfo
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- CN108489438B CN108489438B CN201810226879.XA CN201810226879A CN108489438B CN 108489438 B CN108489438 B CN 108489438B CN 201810226879 A CN201810226879 A CN 201810226879A CN 108489438 B CN108489438 B CN 108489438B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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Abstract
The invention discloses a contact type hole making quality detection method, which comprises the steps of detecting the quality of a hole to be detected by extending a detection device into the hole to be detected, recording the stroke value and the deformation of the detection device extending into the hole to be detected, and calculating the aperture, the hole depth, the dimple depth and the dimple radius of the hole to be detected; the detection device comprises a detection unit, a connector, a first bushing, a second bushing and a mounting seat, wherein the detection unit comprises a probe, a conductor and a displacement sensor which are sequentially arranged in the connector from left to right. The deformation value of the detection device is detected and recorded through the displacement sensor; the stroke value and the deformation obtained by detection can be used for calculating the aperture, the hole depth, the dimple depth and the dimple radius of the hole to be detected; the invention has less test parameters and effectively reduces errors; the hole making quality detection method has high precision and stability, improves the detection efficiency of the hole making quality, can realize the on-line detection of the hole making quality, and has good practicability.
Description
Technical Field
The invention belongs to the technical field of hole making quality detection, and particularly relates to a contact type hole making quality detection method.
Background
The rivet is the indispensable connected mode in the aircraft assembly, consequently need process thousands of rivet holes when spare part is processed, the quality of rivet hole will be closely relevant with the quality, the life-span of aircraft spare part, therefore the detection of rivet hole is vital. The conventional mode at present for detecting the rivet hole is to detect through a plug gauge (go-no-go gauge), one end with small size can pass through, and one end with large size can not pass through, namely, the rivet hole is qualified. This kind of mode needs the manual work to operate, and work load is big, and the result that detects moreover has very big relation with people's operation dynamics, mode, detects the precision low, poor stability, influences hole measuring precision and efficiency. Therefore, the problem of hole quality detection needs to be solved.
Disclosure of Invention
The invention aims to provide a contact type hole making quality detection method, which detects the quality of a hole to be detected by extending a detection device into the hole to be detected, records the stroke value and the deformation of the detection device extending into the hole to be detected, and is used for calculating the aperture, the hole depth, the dimple depth and the dimple radius of the hole to be detected; the hole making quality detection method has high precision and stability, improves the detection efficiency of the hole making quality, can realize the on-line detection of the hole making quality, and has good practicability.
The invention is mainly realized by the following technical scheme: a contact type hole making quality detection method comprises the steps of detecting the quality of a hole to be detected by extending a detection device into the hole to be detected, recording the stroke value and the deformation of the detection device extending into the hole to be detected, and calculating the aperture, the hole depth, the dimple depth and the dimple radius of the hole to be detected; the detection device comprises a detection unit, a connector, a first bushing, a second bushing and a mounting seat, wherein the detection unit comprises a probe, a conductor and a displacement sensor which are sequentially arranged in the connector from left to right; the two ends of the outer side of the connector are respectively connected with a first bushing and a second bushing, the first bushing penetrates through the connector to be connected with the conductor, the conductor can be driven by the first bushing to slide relative to the connector, and the second bushing is connected with the mounting seat; a deformable block is arranged in the free end of the probe, penetrates through the outer wall of the probe and protrudes out of the free end of the probe, the deformable block is connected with the bottom of the probe, and the radial deformation of the deformable block is converted into the axial deformation of the probe; the probe is arranged in the probe and is connected with the conductor, the probe is connected with the displacement sensor through the conductor, and the probe and the conductor are both provided with return springs.
The power supply is supplied by the working power supply, and the power supply mode of the working power supply is the prior art, so the details are not repeated. The probe, the conductor and the displacement sensor are all the prior art and are not improvement points of the invention, so the details are not repeated. The connector is used for installing the detection unit, and the connector is the prior art and is not an improvement point of the invention, so the description is omitted. The method for recording the stroke of the detection device can calculate the stroke of the detection device by laser detection, setting the movement speed of the detection device and recording the detection time, and the recording method of the movement stroke of the detection device is the prior art and is not an improvement point of the invention, so the description is omitted.
In order to better implement the invention, further, the method for detecting the contact type hole making quality mainly comprises the following steps:
step E1: the method comprises the following steps that a probe extends into a hole to be detected along the axial direction of the hole to be detected, a deformable block is compressed by the wall of the hole to be detected, the deformable block extrudes a probe to generate axial deformation of the hole to be detected, the probe is transmitted to a displacement sensor through a transmitter, and the displacement sensor detects the deformation of the probe; when the deformable block of the probe passes through the hole to be detected, the deformable block, the probe, the transmitter and the displacement sensor in the detection device are restored to the original positions; recording the maximum deformation quantity DeltaS 1 of the deformable block passing through the hole to be detected and the stroke value L1 of the detection device;
step E2: the detection device continuously extends into the hole to be detected, the first bushing is in contact with the hole to be detected, the first bushing drives the conductor to move upwards relative to the connector along the axial direction of the hole to be detected, displacement is generated, and the displacement sensor records the deformation; recording the stroke value H1 of the detection device when the deformable block is completely compressed by the hole wall to be detected until the first bushing is just contacted with the hole to be detected;
step E3: when the first bushing cannot move relative to the connector, the detection device retracts to the hole to be detected according to an opposite route, and the displacement sensor records a stroke value H2 of the detection device from the moment the corresponding first bushing leaves the hole to be detected to the moment the corresponding deformable block leaves the hole to be detected in the retraction process of the detection device, a deformation amount S2 of the deformable block passing through the hole to be detected and a stroke parameter L2 of the movement of the detection device when the deformable block is in a fully compressed state and passes through the hole to be detected; and when the detection device exits the detection hole, the test is finished.
In order to better implement the invention, further, the detection process of the detection device entering and exiting the hole to be detected is subjected to mirror image processing, and the deformable block passes through the deformation quantity of the hole to be detected
The stroke value of the detection device when the deformable block is completely compressed to the point that the first bushing is just contacted with the hole to be detected by the hole wall to be detected
Stroke parameter of the movement of the detection device during the passage of the deformable block through the hole to be detected
In order to better implement the present invention, further, the compression amount of the deformable block is in a linear relationship with the axial deformation amount of the probe, so that the deformation amount of the displacement sensor is in a linear relationship with the compression amount of the deformable block; the pore diameter of the hole to be measured is as follows:
D＝k×ΔS+b (1)
wherein k and b are calibrated specific parameters.
In order to better implement the present invention, further, the process of the deformable block receiving the maximum amount of compression is the process of the detection device contacting the inner surface of the hole to be detected, so that the hole depth of the hole to be detected is L.
In order to better implement the invention, further, the dimple depth H of the hole to be measured is H0-H1, wherein H0 is the distance from the deformable block to the first bushing.
In order to better implement the invention, further, the aperture of the to-be-detected hole dimple is as follows:
wherein alpha is the dimple angle.
In the detection process, the detection device is moved to the position above the surface of the hole to be detected, so that the axis of the detection device is perpendicular to the surface of the hole to be detected, and the axis of the detection device is overlapped with the axis of the hole to be detected as much as possible; the measurement process can be divided into three parts: the detection device advances along the axis of a hole, a probe enters the inner surface of the hole to be detected, when a deformable part on the probe is pressed to generate radial deformation, the radial compression can be converted into axial displacement of the probe through a conical surface of the probe, the probe transmits displacement to a displacement sensor through a gasket and a conductor, the displacement sensor records the generated deformation, after the deformable part on the probe passes through the hole, the pressed state is relieved, and the probe, the gasket, the conductor, the displacement sensor and the deformable part on the probe recover to the original position; secondly, the detection device continues to advance until the bushing presses the outer surface of the hole to be detected, the bushing is pressed to drive the conductor to generate axial displacement and transmits the axial displacement to the displacement sensor to record the deformation, and when the compression reaches a specified value, the detection device stops moving and retreats until the bushing is separated from the outer surface of the hole to be detected; thirdly, the detection device continues to retreat until the hole is retreated for a certain distance, and the measurement principle is the same as that of the first part; during the whole measuring process, the feeding amount of the real-time recording detection device is transmitted to a system display.
The invention has the beneficial effects that:
(1) the quality of the hole to be detected is detected by the detection device extending into the hole to be detected, and the stroke value and the deformation of the detection device extending into the hole to be detected are recorded and are used for calculating the aperture, the hole depth, the dimple depth and the dimple radius of the hole to be detected; the detection device comprises a detection unit, a connector, a first bushing, a second bushing and a mounting seat, wherein the detection unit comprises a probe, a conductor and a displacement sensor which are sequentially arranged in the connector from left to right; the two ends of the outer side of the connector are respectively connected with a first bushing and a second bushing, the first bushing can slide relative to the connector, and the second bushing is connected with the mounting seat; the probe is arranged in the probe and is connected with the conductor, and the probe and the conductor are both provided with return springs; a deformable block is arranged in the free end of the probe, penetrates through the outer wall of the probe and protrudes out of the free end of the probe, the deformable block is connected with the bottom of the probe, and the radial deformation of the deformable block is converted into the axial deformation of the probe; the hole making quality detection method has high precision and stability, improves the detection efficiency of the hole making quality, can realize the on-line detection of the hole making quality, and has good practicability.
(2) According to the detection method, the probe extends into the hole to be detected along the axial direction of the hole to be detected until the first bushing cannot move relative to the connector, the detection device returns to the hole to be detected according to an opposite route, the displacement sensor records a stroke value H2 of the detection device when the corresponding first bushing just leaves the hole to be detected and the corresponding deformable block just leaves the hole to be detected in the return process of the detection device, the deformation quantity S2 of the deformable block during passing through the hole to be detected and a stroke parameter L2 of the movement of the detection device during passing through the hole to be detected in a fully compressed state; when the detection device exits the detection hole, the test is finished; the invention detects the hole to be detected twice through the inlet and the outlet of the detection device, reduces the error of hole quality detection, improves the precision and the stability of hole quality detection, improves the detection efficiency of the hole quality, can realize the on-line detection of the hole quality, and has better practicability.
(3) The hole diameter, the hole depth, the dimple depth and the dimple radius of the hole to be detected are simple in calculation method, the detection parameters of the detection device are few, the hole making quality detection accuracy and stability are high, the hole making quality detection efficiency is improved, the hole making quality can be detected on line, and the hole making device has good practicability.
Drawings
FIG. 1 is a graph of the amount of deformation of the sensing device of the present invention as a function of the stroke of movement of the sensing device;
FIG. 2 is a schematic structural diagram of a detecting device according to the present invention;
FIG. 3 is a schematic cross-sectional view of the detecting device of FIG. 2;
fig. 4 is a schematic view of the detection process of the detection device.
Wherein: 1-a first bushing, 2-a compression spring, 3-a hole to be measured, 4-a second bushing, 5-a cylindrical pin, 6-a mounting seat, 7-a rear cover, 8-a buffer spring, 9-a deformable block, 10-a support nut, 11-a return spring, 12-a conductor, 13-a connector, 15-a gasket, 16-a probe, 17-a probe and 18-a displacement sensor.
Detailed Description
Example 1:
a contact type hole making quality detection method comprises the steps of detecting the quality of a hole 3 to be detected by extending a detection device into the hole 3 to be detected, recording the stroke value and the deformation of the detection device extending into the hole 3 to be detected, and calculating the aperture, the hole depth, the dimple depth and the dimple radius of the hole 3 to be detected; the detection device comprises a detection unit, a connector 13, a first bushing 1, a second bushing 4 and a mounting seat 6, wherein the detection unit comprises a probe 17, a probe 16, a conductor 12 and a displacement sensor 18 which are sequentially arranged in the connector 13 from left to right; the two ends of the outer side of the connector 13 are respectively connected with a first bushing 1 and a second bushing 4, the first bushing 1 penetrates through the connector 13 to be connected with the conductor 12, the first bushing 1 can drive the conductor 12 to slide relative to the connector 13, and the second bushing 4 is connected with the mounting seat 6; a deformable block 9 is arranged in the free end of the probe 17, the deformable block 9 penetrates through the outer wall of the probe 17 and protrudes out of the free end of the probe 17, the deformable block 9 is connected with the bottom of the probe 16, and the radial deformation of the deformable block 9 is converted into the axial deformation of the probe 16; the probe 16 is arranged in the probe 17, the probe 16 is connected with the conductor 12, the probe 16 is connected with the displacement sensor 18 through the conductor 12, and the probe 16 and the conductor 12 are both provided with return springs 11.
The invention detects the deformation value of the hole 3 to be detected through the probe 16 and obtains the deformation value through the detection of the displacement sensor 18; the travel value of the detection device is obtained by setting the detection movement speed of the detection device and recording the detection time; the stroke value and the deformation obtained by detection can be used for calculating the aperture, the hole depth, the dimple depth and the dimple radius of the hole 3 to be detected; the invention has less test parameters and effectively reduces errors; the hole making quality detection method has high precision and stability, improves the detection efficiency of the hole making quality, can realize the on-line detection of the hole making quality, and has good practicability.
Example 2:
the embodiment is further optimized on the basis of embodiment 1, and as shown in fig. 2, a compression spring 2 is arranged between the first bushing 1 and the second bushing 4, so that the first bushing and the second bushing can be conveniently restored to the original positions after being stressed and contacted; the second bushing 4 can slide relative to the mounting seat 6, an elliptical hole is formed in the mounting seat 6, a circular hole is correspondingly formed in the second bushing 4, the mounting seat 6 and the second bushing 4 are connected through a cylindrical pin 5, and the cylindrical pin 5 sequentially penetrates through the elliptical hole and the circular hole; the cylindrical pin 5 can move in the elliptical hole, so that the second bushing 4 can slide in the axial direction of the mounting seat 6;
as shown in fig. 3, through holes are symmetrically formed in the side wall of the free end of the probe 17, a deformable block 9 is arranged in each through hole, one end of the deformable block 9 penetrates through each through hole, the other end of the deformable block 9 is connected with the bottom of the probe 16, and the bottom of the probe 16 is a conical surface, so that the radial deformation of the deformable block 9 can be converted into the axial deformation of the probe 16; the fixed end of the probe 17 is in threaded connection with the connector 13, and the free end of the probe 17 sequentially penetrates through the connector 13 and the first bushing 1 and is used for being inserted into a hole; the probe 16 is arranged in the probe head 17, and the probe 16 is connected with one end of the conductor 12 through a gasket 15; one end of the connector 13 is sleeved in the first bushing 1, and the first bushing 1, the connector 13 and the conductor 12 are sequentially fixed through the cylindrical pin 5, so that the first bushing 1 drives the conductor 12 of the first connector 13 to move, and the cylindrical pin 5 can slide on the connector 13, so that the first bushing 1 drives the conductor 12 to slide in the axial direction of the connector 13; the connector further comprises a support nut 10 arranged inside the connector 13, and the support nut 10 is arranged between the displacement sensor 18 and the conductor 12; the fixed end of the displacement sensor 18 is arranged on the mounting seat 6, and a data transmission line is led out through a hole in the rear cover 7 of the mounting seat 6; a buffer spring 8 is arranged outside the fixed end of the displacement sensor 18; the measuring end of the displacement sensor 18 passes through the second bushing 4, the support nut 10 and contacts the conductor 12 in sequence.
As shown in fig. 1, the detection method mainly includes the following steps: step E1: a probe 17 extends into the hole 3 to be detected along the axial direction of the hole 3 to be detected, as shown in fig. 4(a), the deformable block 9 is compressed by the hole wall of the hole 3 to be detected, the deformable block 9 extrudes the probe 16 to generate the axial deformation of the hole 3 to be detected, the probe 16 is transmitted to a displacement sensor 18 through a transmitter 12, and the displacement sensor 18 detects the deformation of the probe 16; when the deformable block 9 of the probe 17 passes through the hole 3 to be detected, the deformable block 9, the probe 16, the conductor 12 and the displacement sensor 18 in the detection device are restored to the original positions; recording the maximum deformation Δ S1 of the deformable mass 9 during its passage through the hole 3 to be measured and the stroke value L1 of the detection device;
step E2: as shown in fig. 4(b), the detection device continues to extend into the hole 3 to be measured, the first bushing 1 contacts with the hole 3 to be measured, the first bushing 1 drives the conductor 12 to move upward relative to the connector 13 along the axial direction of the hole 3 to be measured, so as to generate a displacement, and the displacement sensor 18 records the deformation; recording the stroke value H1 of the detection device when the deformable block 9 starts to be completely compressed by the wall of the hole 3 to be detected until the first bushing 1 just contacts the hole 3 to be detected;
step E3: as shown in fig. 4(c), when the first bushing 1 cannot move relative to the connector 13, the detecting device retracts into the hole 3 to be detected according to the opposite route, and the displacement sensor 18 records a stroke value H2 of the detecting device from the moment when the corresponding first bushing 1 leaves the hole 3 to the moment when the corresponding deformable block 9 leaves the hole 3 to be detected, a deformation amount S2 during the time when the deformable block 9 passes through the hole 3 to be detected, and a stroke parameter L2 of the movement of the detecting device during the time when the deformable block 9 is in a fully compressed state and passes through the hole 3 to be detected; and when the detection device exits the detection hole, the test is finished.
The invention detects the deformation value of the hole 3 to be detected through the probe 16 and obtains the deformation value through the detection of the displacement sensor 18; the travel value of the detection device is obtained by setting the detection movement speed of the detection device and recording the detection time; the stroke value and the deformation obtained by detection can be used for calculating the aperture, the hole depth, the dimple depth and the dimple radius of the hole 3 to be detected; the invention has less test parameters and effectively reduces errors; the hole making quality detection method has high precision and stability, improves the detection efficiency of the hole making quality, can realize the on-line detection of the hole making quality, and has good practicability.
Other parts of this embodiment are the same as embodiment 1, and thus are not described again.
Example 3:
the embodiment is further optimized on the basis of the embodiment 2, the detection process of the detection device entering and exiting the hole 3 to be detected is subjected to mirror image processing, and the deformation quantity of the deformable block 9 during the process of passing through the hole 3 to be detected
The deformable block 9 begins to be completely compressed by the wall of the hole 3 to be measured to the first bush 1 and to be insertedStroke value of detecting device when measuring hole 3 just contacts
The stroke parameter of the movement of the detection device during the passage of the deformable block 9 through the hole 3 to be detected
In the detection method, the probe 17 extends into the hole 3 to be detected along the axial direction of the hole 3 to be detected until the first bush 1 cannot move relative to the connector 13, the detection device retracts to the hole 3 to be detected according to an opposite route, the displacement sensor 18 records a stroke value H2 of the detection device when the corresponding first bush 1 just leaves the hole 3 to be detected and the deformable block 9 just leaves the hole 3 to be detected in the retraction process of the detection device, a deformation amount S2 of the deformable block 9 passing through the hole 3 to be detected and a stroke parameter L2 of the movement of the detection device when the deformable block 9 is completely compressed and passes through the hole 3 to be detected; when the detection device exits the detection hole, the test is finished; according to the invention, the hole 3 to be detected is detected twice through the inlet and the outlet of the detection device, so that the error of hole quality detection is reduced, the precision and the stability of hole quality detection are improved, the detection efficiency of hole quality is improved, the online detection of hole quality can be realized, and the practicability is better.
The other parts of this embodiment are the same as those of embodiment 2, and thus are not described again.
Example 4:
the embodiment is further optimized on the basis of the embodiment 3, and the process that the deformable block 9 is subjected to the maximum compression amount is the process that the detection device is in contact with the inner surface of the hole to be detected 3, so that the hole depth of the hole to be detected 3 is L; the amount of compression of the deformable mass 9 is linear with the amount of axial deformation of the probe 16, and therefore the amount of deformation of the displacement sensor 18 is linear with the amount of compression of the deformable mass 9; the aperture of the hole to be detected 3 is as follows:
D＝k×ΔS+b (1)
k and b are specific calibrated parameters, so that the detailed description is omitted;
the dimple depth H of the hole to be measured 3 is H0-H1, wherein H0 is the distance from the deformable block 9 to the first bushing 1;
the aperture of the dimple of the hole to be detected 3 is as follows:
wherein alpha is a dimple angle which is a known parameter and is not described again.
The hole diameter, the hole depth, the dimple depth and the dimple radius of the hole 3 to be detected are simple in calculation method, the detection parameters of the detection device are few, the hole making quality detection accuracy and stability are high, the hole making quality detection efficiency is improved, the hole making quality can be detected on line, and the hole making device has good practicability.
The other parts of this embodiment are the same as those of embodiment 3, and thus are not described again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (6)
1. A contact type hole making quality detection method is characterized in that a detection device stretches into a hole (3) to be detected to detect the quality of the hole (3) to be detected, and the stroke value and the deformation of the detection device stretching into the hole (3) to be detected are recorded and are used for calculating the aperture, the hole depth, the dimple depth and the dimple radius of the hole (3) to be detected; the detection device comprises a detection unit, a connector (13), a first bushing (1), a second bushing (4) and a mounting seat (6), wherein the detection unit comprises a probe (17), a probe (16), a conductor (12) and a displacement sensor (18) which are sequentially arranged in the connector (13) from left to right; the two ends of the outer side of the connector (13) are respectively connected with a first bushing (1) and a second bushing (4), the first bushing (1) penetrates through the connector (13) to be connected with the conductor (12), the first bushing (1) can drive the conductor (12) to slide relative to the connector (13), and the second bushing (4) is connected with the mounting seat (6); a deformable block (9) is arranged in the free end of the probe (17), the deformable block (9) penetrates through the outer wall of the probe (17) and protrudes out of the free end of the probe (17), the deformable block (9) is connected with the bottom of the probe (16), and the radial deformation of the deformable block (9) is converted into the axial deformation of the probe (16); the probe (16) is arranged in the probe (17), the probe (16) is connected with the conductor (12), the probe (16) is connected with the displacement sensor (18) through the conductor (12), and the probe (16) and the conductor (12) are both provided with return springs (11);
the detection process of the detection device entering and exiting the hole to be detected (3) is subjected to mirror image processing, and the deformation amount of the deformable block (9) during the passing through of the hole to be detected (3)
The deformable block (9) begins to be completely compressed by the wall of the hole (3) to be measured to reach the stroke value of the detection device when the first bushing (1) is just contacted with the hole (3) to be measured
The stroke parameter of the movement of the detection device during the passage of the deformable block (9) through the hole (3) to be detected
Wherein:
Δ S1 is: the maximum deformation amount of the deformable block (9) when the deformable block (9) of the probe (17) passes through the hole (3) to be measured during the period that the deformable block (9) passes through the hole (3) to be measured;
Δ S2 is: the maximum deformation amount of the deformable block (9) passing through the hole (3) to be measured from the moment the corresponding first bushing (1) just leaves the hole (3) to be measured to the moment the deformable block (9) just leaves the hole (3) to be measured in the retraction process;
h1 is: the deformable block (9) starts to be completely compressed by the wall of the hole (3) to be measured to reach the stroke value of the detection device when the first bushing (1) is just contacted with the hole (3) to be measured;
h2 is: during the withdrawal process, the corresponding stroke value of the detection device is from the position where the first bushing (1) just leaves the hole (3) to be detected to the position where the deformable block (9) just leaves the hole (3) to be detected;
l1 is: when the deformable block (9) of the probe (17) passes through the hole (3) to be detected, detecting the stroke value of the device;
l2 is: and in the retracting process, the stroke value of the movement of the detection device is passed when the corresponding first bushing (1) just leaves the hole (3) to be detected to the state that the deformable block (9) is completely compressed when the deformable block (9) just leaves the hole (3) to be detected.
2. The contact type hole making quality detection method according to claim 1, characterized by mainly comprising the following steps:
step E1: the method comprises the following steps that a probe (17) extends into a hole (3) to be detected along the axial direction of the hole (3) to be detected, a deformable block (9) is compressed by the wall of the hole (3) to be detected, the deformable block (9) extrudes a probe (16) to generate axial deformation of the hole (3) to be detected, the probe (16) is transmitted to a displacement sensor (18) through a transmitter (12), and the displacement sensor (18) detects the deformation of the probe (16); when the deformable block (9) of the probe (17) passes through the hole (3) to be detected, the deformable block (9), the probe (16), the conductor (12) and the displacement sensor (18) in the detection device are restored to the original positions; recording the maximum deformation quantity DeltaS 1 of the deformable block (9) passing through the hole (3) to be detected and the stroke value L1 of the detection device;
step E2: the method comprises the following steps that a detection device continuously extends into a hole (3) to be detected, the detection device continuously extends into the hole (3) to be detected, a first bushing (1) is in contact with the hole (3) to be detected, the first bushing (1) drives a conductor (12) to move upwards relative to a connector (13) along the axial direction of the hole (3) to be detected to generate displacement, and a displacement sensor (18) records deformation; recording the stroke value H1 of the detection device when the deformable block (9) starts to be completely compressed by the wall of the hole (3) to be detected until the first bushing (1) is just contacted with the hole (3) to be detected;
step E3: when the first bushing (1) cannot move relative to the connector (13), the detection device retracts to the hole (3) to be detected according to an opposite route, the displacement sensor (18) records a stroke value H2 of the detection device when the corresponding first bushing (1) just leaves the hole (3) to be detected in the retraction process of the detection device to the deformable block (9) just leaves the hole (3) to be detected, a deformation amount S2 of the deformable block (9) passing through the hole (3) to be detected, and a stroke parameter L2 of the movement of the detection device when the deformable block (9) is in a fully compressed state and passes through the hole (3) to be detected; and when the detection device exits the detection hole, the test is finished.
3. A method for contact-based quality testing of holes made according to claim 2 wherein the maximum compression of the deformable block (9) is the contact of the testing device with the inner surface of the hole (3) being tested, whereby the hole depth of the hole (3) being tested is L.
4. A method of contact drilling quality as claimed in claim 2, characterised in that the amount of compression of the deformable mass (9) is linear with the amount of axial deformation of the probe (16), and hence the amount of deformation of the displacement sensor (18) is linear with the amount of compression of the deformable mass (9); the aperture of the hole (3) to be measured is as follows:
D＝k×ΔS+b (1)
wherein k and b are calibrated specific parameters.
5. A contact type hole making quality detection method according to claim 4, characterized in that the dimple depth H of the hole (3) to be detected is H0-H1, wherein H0 is the distance from the deformable block (9) to the first bushing (1).
6. The method for detecting the quality of the contact type hole-making according to claim 5, wherein the hole (3) to be detected is a dimple hole with the diameter:
wherein alpha is the dimple angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810226879.XA CN108489438B (en) | 2018-03-20 | 2018-03-20 | Contact type hole making quality detection method |
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| CN201810226879.XA CN108489438B (en) | 2018-03-20 | 2018-03-20 | Contact type hole making quality detection method |
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| CN108489438A CN108489438A (en) | 2018-09-04 |
| CN108489438B true CN108489438B (en) | 2021-03-30 |
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