A) basic concepts: test force: objects acted upon by an external force, make it happen the deformation of the size of its force, P = K · △ H, F, said. Remaining height: the height of the object after deformation occurs in the object in the external force, denoted by H. Deformation: object deformation occurs in the external force, the deformation of the height (height of the object - the remaining height), △ H. Stiffness: K = (F2-F1) / (H2-H1) in units of N / mm. 2) Uses: The following description of the two spring tension and compression testing machine is based on the People's Republic of China machinery industry standard JB / T 7796-1995 JB / T 7796-2005 "spring tension and compression testing machine test methods standards and JIS B7738- 1993 "coil spring pressure, tensile testing machine under technical requirements. Of the extension spring, compression spring, disc spring, tower spring, leaf spring, circlip, leaf springs, composite springs, gas springs, die springs, shaped springs precision spring tension, stress, displacement, stiffness and strength testing and analysis : 1, by the amount of deformation of the spring △ H, or pressure to the value of the force F corresponding to the height H measured to determine the spring is qualified. 2, through the value of the force F of the spring, to measure the amount of deformation of the corresponding spring △ H, or to determine the height H of the spring is qualified. 3 point or multi-point test judgment springs eligibility. 4, can be segmented measurement, and can calculate the K, and the average stiffness of the stiffness (elastic modulus) of each segment. 5, product sampling inspection, can also batch test (mechanical parts of a batch test tooling). Model TLY-S500N The TLY-S1000N, The TLY-S2000N market price guide Yuan Price structure gear rack drive work manually load Display LCD screen display data processing can save, print parameters: 1, range 0-100% 2 tranche full test force, regardless of file the test force precise value 500N/0.01N; 1000N, 2000N/0.1N 4 Test Force showed the error of ≤ ± 1% 5, displacement precise value of 0.01mm 6, indicated displacement value error (microns) ≤ ± (50 +0.15 λ), a test machine level, stretching space 270mm 9, compressed space 270mm 10 experimental stroke 250mm 11 110mm 12, of the diameter of the pressure plate displacement speed manual 13 testing machine size of 520 × 350 × 930 mm 15 testing machine weight about 70kg 16 Power supply AC220V ± 10% 50HZ 17 protection function program to protect 18 noise 0dB (A) 19, assembly quality meets national standards GB/T2611 20 packaging in line with the Department of Mechanical standard JB / T 614 configuration, the host produced a set of 2 drive assembly gear rack drive 1 set the machine casing spray 1 set, the servo motor speed control system 6 precision ball screw, high precision weighing sensor 1 8, a high-precision displacement sensor, control the electrical produced a set of 10 printer 1 11 stretching accompanied by a set of 12 compression accompanied by a sets of 14, Manual 1 15 1 part 16 certificate, packing list 1 part 17 1 part 13 warranty detect quantities suitable warranty the aftermarket warranty period Warranty Services, 2, during transport the damaged supply-side is responsible for 3 in the process of using human damage to be responsible for 4, the use of the machine itself reason for the party responsible for 5, the response time of 2 hours 6 processing time within 24 hours, 48 ??hours outside the province, the principle of service due to The machine is small, can be back to the factory service tenet: Baotui seven days, 15 days replacement, one year warranty, lifetime service. Service commitment: If the machine fails, given within one hour telephone answer site service within 48 hours in the province, outside the province 72 hours door service. "Integrity, pragmatic, efficient, professional" to provide you with the most complete test system solutions