China's lock industry market standard lock test method
Test methods of the locks
UDC 683.3:001.4 GB 8384-87
This standard applies to iron (copper) padlocks, marble drawer locks, single (double) tongue marble door locks, bicycle locks for density, robustness, flexibility and surface quality testing.
1, the density
1.1 Key different teeth number
1.1.1 Definition
According to the number of marble holes and the length of the round head, the number of different numbers of teeth is composed.
1.1.2 Test Method
Look at the thin teeth and see if the number of different teeth meets the requirements.
Check the actual object, whether the number of marble holes and the length of the round head marble meet the requirements of the dental book.
Where: N - the maximum number of teeth of the key;
A——round head marble difference;
b - the number of marble holes.
1.2 Key tooth arrangement rationality
1.2.1 Definition
Whether the tooth flower is reasonable when the tooth book is arranged.
In the tooth book, it should be grouped and sorted out to remove the poorly-contained tooth. Any two key knives in each group of teeth are numbered, not less than two marbles. At the same time, pay attention to avoid the opening of the tooth and the same size of the tooth.
1.2.2 Test method
Check if the denim book meets the definition requirements.
A random check of 50 objects, according to the definition requirements.
1.3 round head marble differential
1.3.1 Definition
The length difference between the round heads of each level.
1.3.2 Test method
Measure the size of the round head marbles of different lengths and determine the step difference of the round head marbles.
In the absence of dissent, the level of the bottom of the tooth can also be measured instead of measuring the difference in the level of the ball.
1.3.3 Test Tools
0~125mm vernier caliper (engraved value 0.02mm), 0~25mm first-order precision outer diameter micrometer (scale value 0.01mm) or fixture 0~10mm first-class accuracy dial indicator (scale value 0.01mm).
1.4 Interoperability rate
1.4.1 Definition
The percentage of times that were opened and the total number of trials opened.
1.4.2 Test Method
When testing, take the specified number of samples, grouped by five people, and open the trial number (the total test time does not exceed forty-five minutes).
1.4.3 Calculation method of mutual opening rate
X=R/T(T-1)×100%
(2)
Where: X - mutual opening rate, %;
R - the number of times it was turned on;
T - the number of samples.
1.5 Safety facilities
1.5.1 Definition
The lock should have structural means to enhance safety.
1.5.2 Test method
a. Pull out: the lock should have anti-pull measures to increase the pull-out performance;
b. Anti-smashing: the locking tongue is extended, and after the operation knob is insured, it is pressurized with the specified mass. Under the condition of ensuring the effective length of the locking tongue, the mechanism should not fail;
c. Anti-saw: After the bolt is extended, the lock body is clamped, the bow is cut by hand, and the new steel saw blade is used to cut the tongue at the mouth of the lock tongue, which is not easy to be sawed;
d. Anti-drilling: Fix the lock on the 6mm platform drill, and use the φ6mm high-speed steel drill bit to drill from the key position, which should not be drilled;
e. Anti-unloading: The key is installed on the door, and the lock cannot be removed normally after the door is locked;
f. Safety chain: When the chain is not taken, the outside person cannot be removed and can withstand the specified static tension.
1.6 lock core slot closed center degree
1.6.1 Definition
The grooved portion of the key cylinder keyway should approach or exceed the centerline of the keyway.
1.6.2 Test Method
Use a 0.2mm standard feeler gauge to test the plug parallel to the centerline of the lock cylinder slot.
1.7 Shake the lock should be free of marbles
1.7.1 Definition
When the lock is shaken, there should be no billows.
1.7.2 Test method
After the key is normally pulled out, hold all the floating parts of the lock head and swing in the direction of the bullet hole without the sound of a marble (except for other noises).
1.8 Key angle
1.8.1 Definition
When the lock is turned on, the key deflects the angle of the key position when the key is reset.
1.8.2 Test method
Install the lock on the tester, close the lock and then twist the key to open the lock. When the key is reset, measure the angle between the center line of the key and the position of the key.
2, firmness
2.1 Durability
2.1.1 Definition
Lock life
2.1.2 Test method
The lock is mounted on the lock life tester by means of a clamp to simulate the use test. Insert the key to realize the lock beam, the lock tongue, the lock ring open and close, and the key is pulled out for one cycle. The total number of cycles measured is the service life. The test speed and the number of cycles are as required by the standard (a small amount of lubricant is allowed before the test, and the lubricant is added once every 10,000 times in the middle). When the lock can no longer be turned on, the service life is reached. If there is no test machine, it can be replaced manually.
2.2 The tension between the two screw joints of the lock head
2.2.1 Definition
The internal thread of the lock is connected to the screw for tensile strength.
2.2.2 Test method
Install the lock on the tensile machine through the clamp. When testing, the screw and thread should avoid the three teeth, and the two screws should be stressed at the same time.
2.2.3 Test equipment
0~9800N tensile testing machine (accuracy 0%).
2.3 handle, knob pull
2.3.1 Definition
The handle (handle) knob connects part of the pull resistance.
2.3.2 Test method
Install the lock on the 0~9800N tensile machine (accuracy 0%) through the clamp to gradually increase the shaft pulling force to the specified value.
2.4 lock drive rod torque
2.4.1 Definition
The lock rotation bar is subjected to torque when it rotates.
2.4.2 Test method
Install the lock head on the torque machine through the clamp, pull out the key, twist the transmission rod, and gradually increase the force to the specified value (the clamping position is 6mm at the end of the transmission strip).
2.5 key button moment
2.5.1 Definition
The torque the key is subjected to.
2.5.2 Test method
Install the lock head on the torque machine through the clamp, insert the key into the lock cylinder, and then pull out the 1.5~2mm, so that the lock cylinder can't rotate, and gradually increase the force to the specified value. In the absence of a torque machine, the lever shackle code can be used instead.
2.6 Riveting parts, welded parts, and strong parts
2.6.1 Definition
The rivet, welding and solid parts of the lock are firm.
2.6.2 Test method
The riveted, welded and solid parts are mounted on the 0~9800N tensile machine through the clamp, and gradually increase to the specified value along the actual direction of the force.
2.7 axial static pressure after bolt safety
2.7.1 Definition
After the lock tongue is insured (internal protection), the force is gradually applied along the direction of the expansion and contraction of the bolt, and the pressure of the bolt and the tongue can withstand the pressure.
2.7.2 Test method
The lock body is mounted on the 0~9800N tensile machine or press (accuracy 1%) through the clamp, and gradually tightens the top of the bolt after the insurance to the specified value.
2.8 lock tongue lateral force
2.8.1 Definition
The force that the tongue can bear laterally (front and back).
2.8.2 Test method
Install the lock body on the 0~9800N tensile machine or press through the clamp, 2.5mm away from the plane of the lock body, and gradually increase the force on the side of the lock tongue to the specified value.
2.9 Lock beam tensile strength
2.9.1 Definition
The tensile strength of the lock beam after closing.
2.9.2 Test method
After the lock beam is closed, the lock is installed on the 0~9800N (accuracy 1%) tensile machine, and the lock beam is gradually applied to the specified value along the symmetrical center line of the lock beam.
2.10 lock connection torque
2.10.1 Definition
The torque that the lock and housing connections can withstand.
2.10.2 Install the lock and the cover on the torque machine through the clamp, and gradually increase the force on the lock to the specified value (the torque is 1%).
2.11 Cylinder Block Pulling Force
2.11.1 Definition
The lock core has a tensile strength.
2.11.2 Test method
Insert the key into the lock cylinder and rotate it by 90°, then install the lock and the key through the clamp on the 0~9800N (accuracy 1%) tensile machine, and gradually increase the force to the specified value.
2.12 casing two positioning feet torque
2.12.1 Definition
The two positioning feet of the casing are anti-twisting.
2.12.2 Test method
The lock head is mounted on the torque machine through the clamp, and the key is inserted into the lock cylinder slot to gradually increase the force of the key to the specified value (the torque machine accuracy is 1%).
2.13 sleeve pull force
2.13.1 Definition
The degree of fastening of the sleeve to the lock case.
2.13.2 Test method
Install the lock on the 0~9800N (accuracy 1%) tensile machine through the clamp, and gradually increase the force of the two sets of nozzles to the specified value in the direction of the tangential direction of the lock ring.
2.14 lock ring pull
2.14.1 Definition
Bicycle lock ring tensile strength.
2.14.2 Test method
Install the lock on the 0~9800N (accuracy 1%) tensile machine through the clamp, and gradually increase the force of the lock ring exposed to the lock casing along the symmetrical center line to the specified value.
2.15 board firmness
2.15.1 Definition
The ability to resist the bending of the board.
2.15.2 Test method
Tighten the inner and outer double-faced screws on the simulated door, and install the door on the 0~9800N (accuracy 1%) tensile machine through the clamp, and gradually increase the force to the specified value.
2.16 lock box (plate) pull
2.16.1 Definition
The locking box (plate) pull capacity.
2.16.2 Test method
Install the lock box (board) on the 0~9800N (accuracy 1%) tensile machine through the clamp, and gradually increase the force to the specified value at the outer edge of the lock tongue.
3, flexibility
3.1 Open flexibility
3.1.1 Definition
The key slides naturally in, the key rotates slowly along the lock core to the direction of the lock cylinder slot, and can be smoothly inserted into the lock cylinder slot; the lock core is flexible to rotate, the key should rotate without rotation in the working range, and the lock is opened. Closed freely; the key naturally bounces back, and the key is automatically returned to the key position after the straight-open lock is opened (the horizontal lock is closed and the bicycle lock is closed).
3.1.2 Test method
Hold the key along the lock core, turn the key and insert it smoothly into the key cylinder; use the key to turn the lock core without the feeling of rolling; after the lock core rotates, the lock tongue, lock beam and lock ring should jump out smoothly; When the lock is closed, the key can be naturally reset and the key can be removed smoothly.
3.1.3 Test Tools
Hand test or special equipment.
3.2 Key insertion force
3.2.1 Definition
The maximum force required to insert and remove the key into the lock cylinder slot.
3.2.2 Test methods
Install the lock on the key insertion force tester through the clamp, and correct the insertion and removal position of the key and the lock cylinder; then test and see the indicator value of the indicator (allowing to repeat three times, one standard is good).
3.3 Insurance is flexible and reliable
3.3.1 Definition
Locking mechanism, the force and reliability required for handling.
3.3.2 Test method
The insurance should be flexible by turning (or pulling) by hand; the simulated use case should be used for collision and shock test, and the insurance should have no failure.
3.3.3 Test Tools
Hand test or special equipment.
3.4 Locking tongue closing force
3.4.1 Definition
The force required to enter the lock box (plate) when the door is closed.
3.4.2 Test methods
Install the lock body and the lock box (board) on the test machine through the clamp. The installation clearance between the lock body and the lock box (board) should be 2.5±0.5mm. Press into the lock box (board) and see the indicator value.
3.5 lock tongue axial static pressure
3.5.1 Definition
The force required to press the bolt along the telescopic direction of the bolt to a predetermined position from the plane of the lock body.
3.5.2 Test method
The lock body is mounted on the axial force measuring machine of the bolt through the clamp, and the pressure is gradually applied to the middle of the top end of the bolt until the bolt is pressed to a predetermined position away from the plane of the lock body. Look at the indicator value.
3.6 Lock beam down pressure
3.6.1 Definition
The closing force required to press the lock beam into the lock beam hole.
3.6.2 Test method
After the lock beam is opened, the lock beam end is aligned with the lock beam hole, and placed on the test machine to gradually increase the force on the top center of the lock beam until the lock beam is closed, and the indicator value is displayed.
3.7 lock ring return
3.7.1 Definition
The bicycle lock lock ring opens and resets under the action of the tension spring.
3.7.2 Test method
When the lock is opened with a key, the lock ring should be able to reset to the specified position by itself. Allow to open three times. Take a good one as the standard.
4, appearance
4.1 Surface quality
4.1.1 Definition
Refers to the surface quality of the lock head, lock body, lock tongue, key, handle, knob, etc.
4.1.2 Test method
Painted parts: tested according to the 29th group of GB 1720 "Method for Measuring Adhesion of Paint Film". Electroplating parts: According to GB 5938 "Metal coating of light industrial products and chemical treatment layer corrosion resistance test method neutral salt spray test (NSS) method" test, evaluation method. According to GB 5944 "Evaluation of corrosion test results of metal coatings for light industrial products". Polishing, sanding, sandblasting, gold-cut workpieces, gold-cut sample plate point-of-sale readings comparison: shape geometry, with universal square, angle ruler and standard feeler projector.
4.2 Matching tongue and lock tongue fit clearance
4.2.1 Definition
The difference between the vertical and horizontal dimensions of the tongue and the cross-sectional dimension of the bolt.
4.2.2 Test method
The test bolt is retracted and protruded from both sides of the gap, and the plug is inserted from the middle of the lock tongue with a predetermined feeler gauge, and can be inserted into the plug feeler after being inserted into it.
4.3 Cylinder shoulder clearance
4.3.1 Definition
The lock cylinder hole shoulder of the lock head and the lock core shoulder fit the gap.
4.3.2 Test method
Measure the maximum diameter of the cylinder bore shoulder minus the minimum diameter of the cylinder shoulder, which is the lock shoulder clearance.
4.3.3 Test Tools
0~125mm vernier caliper (scale value 0.02mm)
4.4 Locking dimensions and installation center
4.4.1 Definition
Door lock, drawer lock lock shape diameter and edge to lock shaft size requirements.
4.4.2 Test methods
Use the depth vernier caliper to measure the distance from the lock tongue plane to the lock shaft center (the structure that separates the lock head and the lock body, and measure the center line distance from the lock tongue plane to the drive rod hole).
4.5 The height of the lock beam jumps out and the length of the lock tongue extends. Lock ring size
4.5.1 Definition
After the padlock lock beam jumps out, the distance between the end face of the lock beam and the plane of the lock body; the distance between the end of the lock tongue and the plane of the lock tongue; when the bicycle lock lock ring is locked, it is deep into the lock body and the exposed length dimension after opening.
4.5.2 Test method
Use a 0~125mm vernier caliper (scale value 0.02mm) to measure the distance between the end of the bolt and the plane of the tongue. After the lock beam jumps out, use the standard feeler to test the plug according to the specified value (after plugging, it can be dropped as a plug under the weight of the feeler. Progress). Lock the lock ring, use a stylus to mark the lock ring on the deep end, and then open the lock ring. Use a 0~125mm vernier caliper (scale value 0.02mm) to measure its in-depth dimensions and its exposed dimensions.
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