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A kind of surface hardening treatment method of material for eccentric shaft
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A technology of hardening treatment and treatment method, which is applied in the field of surface hardening of parts, can solve the problems of low surface hardness of eccentric shaft and large alternating load, etc., and achieve the effect of increasing contact surface area and high surface hardness
Active Publication Date: 2021-07-16
上海樱侬科技股份有限公司
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Problems solved by technology
Since the eccentric shaft has to bear not only severe friction and wear, but also a large alternating load, the hardness of the material of the eccentric shaft is relatively high, and the surface hardness of the eccentric shaft formed by the existing surface hardening treatment method is still very low
Method used
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example 1
[0044] The surface hardening method provided by this example includes the following steps:
[0045]S1, eccentric shaft cleaning, prepare pickling solution according to the following volume ratio, HCl: urotropine: H 2 O=12:1:87, put the prepared pickling solution in a glass cleaning tank, place a thermometer in the cleaning tank, place the eccentric shaft parts to be processed in the cleaning tank, take it out after 20 minutes, and clean it Rinse it with alcohol and leave it for 2.5 hours. During the cleaning process, the temperature range of the pickling solution is 21-37°C;
[0046] S2, surface treatment of eccentric shaft, sand blasting uses the following sand composition: SiO 2 : 98.2%, Fe 2 o 3 : 0.06%, the appearance of particles is uniform, the particle size range is 40-115 mesh, use the air compressor to aim the spray material at the surface of the mechanical workpiece to be treated for sandblasting, the air pressure of the air compressor is 0.7MPa, and the distance ...
example 2
[0054] The surface hardening method provided by this example includes the following steps:
[0055] S1, eccentric shaft cleaning, prepare pickling solution according to the following volume ratio, HCl: urotropine: H 2 O=12:1:87, put the prepared pickling solution in a glass cleaning tank, place a thermometer in the cleaning tank, place the eccentric shaft parts to be processed in the cleaning tank, take it out after 20 minutes, and clean it Rinse it with alcohol and leave it for 2.5 hours. During the cleaning process, the temperature range of the pickling solution is 20-39°C;
[0056] S2, surface treatment of eccentric shaft, sand blasting uses the following sand composition: SiO 2 : 99%, Fe 2 o 3 : 0.08%, the appearance of particles is uniform, the particle size range is 40-115 mesh, use the air compressor to aim the spray material at the surface of the mechanical workpiece to be treated for sandblasting, the air pressure of the air compressor is 0.8MPa, and the distance i...
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Abstract
The invention discloses a method for surface hardening treatment of materials for eccentric shafts, which comprises the following steps: S1, cleaning, first preparing a pickling solution, then placing the prepared pickling solution in a cleaning tank, and then putting the pickling solution to be treated Place the eccentric shaft in the cleaning tank and take it out after 20 minutes; S2, rinse with alcohol after cleaning, and place it for more than 2 hours; S3, surface treatment of the eccentric shaft, use an air compressor to align the spray material on the surface of the eccentric shaft for sandblasting; S4 , prepare No. 1 abrasive, No. 1 abrasive includes: silicon carbide 40%, aluminum oxide 30% and SiO 2 30%; S5, put the No. 1 abrasive prepared in S4 and the eccentric shaft in S3 in the No. 1 abrasive tank, and rotate and vibrate for 0.5h‑1h at the same time; S6, prepare No. 2 abrasive, and No. 2 abrasive includes: carbonization Silicon 60%, Aluminum Oxide 20% and SiO 2 20%; S7, put the No. 2 abrasive prepared in S6 and the eccentric shaft in S5 in the No. 2 abrasive tank, and rotate and vibrate for 1h-2h at the same time. The invention greatly improves the surface strength of the eccentric shaft.
Description
technical field [0001] The invention relates to the technical field of surface hardening of parts, in particular to a surface hardening treatment method for materials used for eccentric shafts. Background technique [0002] The RV reducer is composed of a cycloidal pin wheel and a planetary bracket. It is widely used in industrial robots and other fields due to its small size, strong impact resistance, large torque, high positioning accuracy, small vibration, and large reduction ratio. It has high fatigue strength, rigidity and life, and the hysteresis accuracy is stable. [0003] The eccentric shaft is the core component of the RV reducer. The quality and accuracy of the eccentric shaft have an important impact on the hysteresis of the reducer, and directly affect the transmission accuracy, transmission efficiency and service life of the reducer. Since the eccentric shaft has to bear not only severe friction and wear, but also a large alternating load, the hardness of the ...
Claims
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Application Information
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