CN114291291A - Method for controlling high-low temperature time error performance of automatic unlocking device - Google Patents
Method for controlling high-low temperature time error performance of automatic unlocking device Download PDFInfo
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- CN114291291A CN114291291A CN202111472450.7A CN202111472450A CN114291291A CN 114291291 A CN114291291 A CN 114291291A CN 202111472450 A CN202111472450 A CN 202111472450A CN 114291291 A CN114291291 A CN 114291291A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 238000005259 measurement Methods 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims 5
- 230000001105 regulatory effect Effects 0.000 claims 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 10
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000005476 soldering Methods 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 12
- 238000007689 inspection Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011009 performance qualification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention belongs to the technical field of unlocking devices, and discloses a method for controlling the high-low temperature time error performance of an automatic unlocking device, which is used for testing the high-low normal temperature time error of the automatic unlocking device, selecting unqualified automatic unlocking devices and recording the time error value; and decomposing the unqualified automatic unlocking device, carrying out dynamic balance measurement on the adjusting swing sheet and the balance wheel in the automatic unlocking device, carrying out balance repair on the unbalance amount after finding out the unbalance amount, and carrying out time error test at high and low normal temperatures again after returning the automatic unlocking device until the test is passed. The invention integrates tin absorption and heating, and can be used for completing the work which needs two persons to use two devices to cooperate by a single person and a single device in the past; the tin soldering device can achieve uniform integral heating, the force can be kept consistent, pins cannot be deformed, devices cannot be damaged, tin particles can be cleaned quickly after the desoldering tool is dismounted, and the tin soldering device is very convenient and fast to use.
Description
Technical Field
The invention belongs to the technical field of unlocking devices, relates to a control method of an automatic unlocking device of an airplane, and particularly relates to a method for controlling high and low temperature time error performance of the automatic unlocking device.
Background
In order to ensure that a lifesaving system on an airplane can normally work under extreme environmental conditions, an automatic lock opener on an airplane ejection seat is required to be qualified in time error performance under the conditions of low temperature of minus 55 +/-2 ℃, high temperature of plus (70 +/-2) DEG C and normal temperature of plus (25 +/-10) DEG C. After the automatic unlocking device is assembled, the high-low temperature and normal temperature time errors of a product need to be tested, the conventional assembling and debugging method of the automatic unlocking device can only debug and control the normal temperature time errors of the automatic unlocking device, the normal temperature time errors of the automatic unlocking device meet requirements, the high-low temperature time errors of the automatic unlocking device cannot be debugged and controlled, no effective solution is provided for the problems that the normal temperature time errors of the automatic unlocking device are debugged to be qualified, and the high-low temperature time errors of the automatic unlocking device are unqualified, only the automatic unlocking device which is scrapped and unqualified can be adopted, and the automatic unlocking device which is qualified in high-low temperature and normal temperature errors is selected to be used by an airplane.
The automatic unlocking device is long in production and assembly period, relates to more than one hundred kinds of components, is scrapped only due to unqualified high-low temperature time errors in the final product debugging stage, is a great waste of manpower and material resources, and seriously affects the production delivery efficiency of the automatic unlocking device.
Disclosure of Invention
The purpose of the invention is as follows:
in order to solve the problems, the invention provides a method for controlling the high-low temperature time error performance of an automatic unlocking device, which can obviously improve the product yield.
The technical scheme of the invention is as follows:
a method for controlling the high and low temperature time error performance of an automatic unlocking device comprises the steps of testing the time error of the automatic unlocking device at high, low and normal temperature, selecting unqualified automatic unlocking devices, and recording the time error value; and decomposing the unqualified automatic unlocking device, carrying out dynamic balance measurement on the adjusting swing sheet and the balance wheel in the automatic unlocking device, carrying out balance repair on the unbalance amount after finding out the unbalance amount, and carrying out time error test at high and low normal temperatures again after returning the automatic unlocking device until the test is passed.
Further, the method specifically comprises the following steps:
step one, testing the time errors of high temperature, low temperature and normal temperature of the automatic unlocking device, and adjustingSelecting unqualified automatic unlocking device, recording certain high temperature time measurement value X of the automatic unlocking device1And likewise the low-temperature time measurement X2Calculating the measured value variable delta ═ X of the time test point of the product under the conditions of high temperature and low temperature1-X2；
Step two, the automatic unlocking device is disassembled, and the adjusting swing sheet and the balance wheel are taken out;
measuring the adjusting swing sheet and the balance wheel through a dynamic balancing machine, and recording the angle alpha of gravity center offset and the first unbalance amount delta displayed on the dynamic balancing machine;
step four, after the measurement is finished, taking down the adjusting swinging sheet and the balance wheel, placing the adjusting swinging sheet and the balance wheel on the V-shaped iron, finding a part with an angle of alpha +180 degrees on the adjusting swinging sheet and the balance wheel, and adjusting the weight of the part to reduce the weight of the part by a certain amount less than delta;
step five, after drilling holes, putting the adjusting balance piece and the balance wheel on the dynamic balancing machine again, measuring again, if the second unbalance amount lambda of the adjusting balance piece and the balance wheel is reduced to a value which is smaller than the first unbalance amount delta and is in a certain proportion with the measured value variable delta, carrying out the next step, and if the requirement is not met, redoing the step three to the step four;
step six: and (4) loading the adjusting swing sheet and the balance wheel into the automatic unlocking device, rechecking the time errors of high temperature, low temperature and normal temperature, and if the time errors are not qualified, repeating the steps from two to five until the time errors are qualified.
Further, the time period in step one is 6.5 s.
Furthermore, in the fourth step, the weight is adjusted by drilling the blind hole phi 2 +/-0.2, and the depth is determined according to the first unbalance amount delta.
Further, the amount in step four is 0.8 Δ.
Further, in step five, the value is smaller than a certain proportion of the first unbalance amount Δ to the measured variable δ, specifically < (0.2 Δ/δ) g.
Further, in the third step, the specific method for measuring the adjusting swinging sheet and the balance wheel through the dynamic balancing machine is as follows: and erecting the adjusting swinging sheet and the balance wheel on the upper surface of the dynamic balancing machine through a bracket and fixing the adjusting swinging sheet and the balance wheel, and then carrying out dynamic balance test on the adjusting swinging sheet and the balance wheel.
Further, the dynamic balance device used in the third step comprises a dynamic balancing machine (1), a support (2) and a fixing screw (3), wherein the dynamic balancing machine (1) is a test platform, the cross section of the support (2) is of a U-shaped structure, holes and grooves for installing and adjusting the balance pieces and the balance wheels (4) are formed in two sides of an opening, the bottom of the support (2) is a plane, the support is installed and fixed on the dynamic balancing machine (1) through the fixing screw (3), the balance wheels (4) are placed on the support (2) through the adjusting balance pieces, and the dynamic balance performance of the dynamic balancing machine is measured through the dynamic balancing machine (1).
The invention has the advantages that:
1. the invention integrates tin absorption and heating, and can be used for completing the work which needs two persons to use two devices to cooperate by a single person and a single device in the past;
2. the invention designs various desoldering tools, which correspond to desoldering of different types of pin elements, can be simply completed by selecting a proper tool, the integral heating is uniform, the force can be kept consistent, the deformation of the pins can not be caused, and the damage of devices can not be caused;
3. the method of the invention enables the tin generated by desoldering to be easier to clean, the tin can not be solidified due to the higher temperature of the whole desoldering tool when the tin is in the desoldering tool section, but the tin can be immediately changed into solid due to the sudden drop of the temperature after entering the desoldering conversion device, and then the tin can be cleaned quickly after the desoldering tool is detached, which is very convenient.
Drawings
FIG. 1 is a schematic structural diagram of an adjusting pendulum plate and a balance wheel;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic view of a stand-off structure;
FIG. 4 is a top view of FIG. 3;
fig. 5 is a schematic structural diagram for adjusting the dynamic balance performance of the balance piece and the balance wheel.
Wherein, 1-dynamic balancing machine, 2-support, 3-fixing screw, 4-adjusting swing sheet and balance wheel.
Detailed Description
This section is an example of the present invention and is provided to explain and illustrate the technical solutions of the present invention.
In order to ensure normal operation under extreme environmental conditions, an automatic unlocking device on an airplane needs to be capable of meeting time error performance qualification under the conditions of low temperature of minus 55 plus or minus 2 ℃, high temperature of plus (70 plus or minus 2) DEG C and normal temperature of plus (25 plus or minus 10) DEG C.
As shown in fig. 1 to 3, a high and low temperature time error performance debugging system comprises a dynamic balancing machine 1, a support 2, a fixing screw 3, and an adjusting swing sheet and balance wheel 4. The dynamic balancing machine consists of a test platform, a display screen and a test host.
The invention discloses a method for controlling high and low temperature time error performance of an automatic unlocking device, which comprises the following specific steps:
step 1: testing the time errors of high and low temperature and normal temperature of the automatic unlocking device, selecting unqualified products, and recording the 6.5S high-temperature time measurement value X of the products1And 6.5S time measurement X of low temperature2And calculating a measured value variable delta ═ X of the 6.5S time test point of the product under the conditions of high temperature and low temperature1-X2；
Step 2: decomposing the product, and taking out the adjusting swinging piece and the balance wheel 4;
and step 3: the method comprises the following steps of installing and fixing a support 2 on a dynamic balancing machine 1 through a fixing screw 3, placing an adjusting swing sheet and a balance wheel 4 on the support 2, measuring through the dynamic balancing machine 1, and recording the angle alpha of gravity center offset and the unbalance amount delta displayed on the dynamic balancing machine 1;
and 4, step 4: after the measurement is finished, the adjusting swing piece and balance wheel 4 is taken down from the support 2 and placed on the V-shaped iron, a part with an angle of alpha +180 degrees is found on the adjusting swing piece and balance wheel 4, and a blind hole phi 2 +/-0.2 is drilled at the part by a drill bit, so that the weight of the part is reduced by 0.8 delta;
and 5: after drilling, the adjusting swinging piece and balance wheel 4 are placed on the dynamic balancing machine 1 again, re-measurement is carried out, if the unbalance amount lambda of the adjusting swinging piece and balance wheel is reduced to less than (0.2 delta/delta) g, the next step is carried out, and if the unbalance amount lambda does not meet the requirement, the steps 2-4 are carried out again;
step 6: and (5) installing the adjusting swing sheet and the balance wheel 4 into the automatic unlocking device, and rechecking time errors of high temperature, low temperature and normal temperature.
Example (b):
when the high-low temperature and normal temperature time error performance of the automatic unlocking device is tested at a certain time, the inspection results of three time test points of the automatic unlocking device, namely normal temperature 4S, normal temperature 6S and normal temperature 6.5S, are found to be 4.05S, 6.08S and 6.50S, the normal temperature time error requirement is met (see table 1), the normal temperature time error is qualified, the high temperature time error inspection results are 4.20S, 6.41S and 6.93S, the low temperature time error inspection results are 3.81S, 5.53 and 6.09S, the high-low temperature time error performance is unqualified, and the product is debugged according to the following steps:
step 1: the product has 6.5S high temperature time measurement value X1Is 6.93, 6.5S low temperature time measurement value X2The measured value variable delta of the 6.5S time test point of the product under the high and low temperature conditions is calculated to be 0.84;
step 2: decomposing the product, and taking out the adjusting swinging piece and the balance wheel 4;
and step 3: the method comprises the following steps of installing and fixing a support 2 on a dynamic balancing machine 1 through a fixing screw 3, placing an adjusting swing sheet and a balance wheel 4 on the support 2, measuring the dynamic balancing performance of the dynamic balancing machine 1, wherein the unbalance magnitude delta of the dynamic balancing machine is 0.305g, and the gravity center offset angle alpha is 74.47 degrees;
and 4, step 4: after the measurement is finished, the adjusting swing piece and balance wheel 4 is taken down from the support 2 and placed on a V-shaped iron, a part with an angle of 254.47 degrees is found on the adjusting swing piece and balance wheel 4 according to the gravity center offset angle and offset displayed on the dynamic balancing machine 1, and a blind hole phi 2 +/-0.2 is drilled at a position 2.8 +/-0.2 away from the end face of the adjusting swing piece and balance wheel 4 by using a drill bit, so that the weight of the part is reduced by 0.244 g;
and 5: after drilling, the adjusting swinging piece and the balance wheel 4 are placed on the dynamic balancing machine 1 again, the balance is measured again, the unbalance amount lambda is checked to be 0.057g and less than 0.072g, and the gravity center offset angle is 21.35 degrees;
step 6: and (3) installing the adjusting swing sheet and the balance wheel 4 into the automatic unlocking device, rechecking the time errors of high and low temperature and normal temperature, wherein the checking result is shown in a table 2, the requirements are met, and the time errors of the high and low temperature and the normal temperature of the product are debugged to be qualified.
TABLE 1 automatic unlocking device time error (S)
TABLE 2 automatic unlocking device time error checking result (S)
| |
4 | 6 | 6.5 |
| Normal temperature (25 +/-10) DEG C | 4.02 | 6.05 | 6.49 |
| Low temperature (-55 +/-2) deg.C | 3.95 | 5.91 | 6.44 |
| High temperature (70 +/-2) DEG C | 4.12 | 6.19 | 6.58 |
The above-mentioned embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (8)
1. A method for controlling the high and low temperature time error performance of an automatic unlocking device is characterized in that the time error of the automatic unlocking device at high, low and normal temperature is tested, an unqualified automatic unlocking device is selected, and the time error value is recorded; and decomposing the unqualified automatic unlocking device, carrying out dynamic balance measurement on the adjusting swing sheet and the balance wheel in the automatic unlocking device, carrying out balance repair on the unbalance amount after finding out the unbalance amount, and carrying out time error test at high and low normal temperatures again after returning the automatic unlocking device until the test is passed.
2. The method for controlling the high and low temperature time error performance of the automatic unlocking device according to claim 1, which is characterized by comprising the following steps:
step one, testing the time errors of high and low temperature and normal temperature of the automatic unlocking device, selecting the unqualified automatic unlocking device, and recording the certain high temperature time measurement value X of the automatic unlocking device1And likewise the low-temperature time measurement X2Calculating the measured value variable delta ═ X of the time test point of the product under the conditions of high temperature and low temperature1-X2；
Step two, the automatic unlocking device is disassembled, and the adjusting swing sheet and the balance wheel are taken out;
measuring the adjusting swing sheet and the balance wheel through a dynamic balancing machine, and recording the angle alpha of gravity center offset and the first unbalance amount delta displayed on the dynamic balancing machine;
step four, after the measurement is finished, taking down the adjusting swinging sheet and the balance wheel, placing the adjusting swinging sheet and the balance wheel on the V-shaped iron, finding a part with an angle of alpha +180 degrees on the adjusting swinging sheet and the balance wheel, and adjusting the weight of the part to reduce the weight of the part by a certain amount less than delta;
step five, after drilling holes, putting the adjusting balance piece and the balance wheel on the dynamic balancing machine again, measuring again, if the second unbalance amount lambda of the adjusting balance piece and the balance wheel is reduced to a value which is smaller than the first unbalance amount delta and is in a certain proportion with the measured value variable delta, carrying out the next step, and if the requirement is not met, redoing the step three to the step four;
step six: and (4) loading the adjusting swing sheet and the balance wheel into the automatic unlocking device, rechecking the time errors of high temperature, low temperature and normal temperature, and if the time errors are not qualified, repeating the steps from two to five until the time errors are qualified.
3. The method of claim 2, wherein the time period in step one is 6.5 s.
4. The method for controlling the high and low temperature time error performance of the automatic unlocking device according to claim 2, wherein in the fourth step, the weight is adjusted by drilling a blind hole phi 2 +/-0.2, and the depth is determined according to the first unbalance amount delta.
5. The method of claim 2, wherein the amount in step four is 0.8 Δ.
6. The method as claimed in claim 2, wherein the value of step five that is smaller than a certain ratio of the first unbalance amount Δ to the measured variable δ, specifically < (0.2 Δ/δ) g.
7. The method for controlling the high and low temperature time error performance of the automatic unlocking device according to claim 2, wherein in the third step, the specific method for measuring the regulating swing sheet and the balance wheel through the dynamic balancing machine is as follows: and erecting the adjusting swinging sheet and the balance wheel on the upper surface of the dynamic balancing machine through a bracket and fixing the adjusting swinging sheet and the balance wheel, and then carrying out dynamic balance test on the adjusting swinging sheet and the balance wheel.
8. The method for controlling the high and low temperature time error performance of the automatic lock opener according to claim 7, wherein the dynamic balancing device used in the third step comprises a dynamic balancing machine (1), a support (2) and a fixing screw (3), the dynamic balancing machine (1) is a test platform, the support (2) is a structure with a U-shaped section, holes and grooves for installing the adjusting swing sheet and the balance wheel (4) are formed in two sides of the opening, the bottom of the support (2) is a plane and is fixedly installed on the dynamic balancing machine (1) through the fixing screw (3), the adjusting swing sheet and the balance wheel (4) are placed on the support (2), and the dynamic balancing performance of the automatic lock opener is measured through the dynamic balancing machine (1).
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