Parameter
| Material | 40CrMo |
| Weight | 86KG |
| Process | Forging + Machining + QT |
| Heat Treatment | QT (normalizing Treatment） |
| Tolerance | H7 |
| Packaging | Cartons packed in fumigation-free wooden cases |
| Delivery Time | 35-40 days after sample approval and deposit arrive |
| Delivery Term | FOB, CIF, CPT & more |
Quality Control
Gear parts accuracy related content
(1) Dimensional accuracy
Refers to the degree of conformity between the actual size of the machined part and the tolerance zone center of the part size.
(2) Shape accuracy
It refers to the degree of conformity between the actual geometry of the machined part surface and the ideal geometry.
(3) Position accuracy
Refers to the difference in actual position accuracy between the relevant surfaces of machined parts.
(4) Mutual relationship
Usually, when designing machine parts and specifying the machining accuracy of parts, attention should be paid to controlling the shape error within the position tolerance, and the position error should be less than the dimensional tolerance. That is, the shape accuracy requirements of precision parts or important surfaces of parts should be higher than the position accuracy requirements, and the position accuracy requirements should be higher than the dimensional accuracy requirements.
In order to ensure the quality of gear parts, we control gear precision from many aspects.
Quality Influence Reason
The quality influence reason of gear parts:
(1) Machining principle error
Machining principle error refers to the error caused by using the approximate cutting edge profile or the approximate transmission relationship for machining. Machining principle error occurs in the machining of thread, gear and complex surface. Do not want to engage in low-level work, want to get rid of the status quo, want to learn UG programming, you can find a point crown education teacher to learn CNC technology.
In processing, approximate processing is generally used to improve productivity and economy under the premise that the theoretical error can meet the processing accuracy requirements.
(2) Adjustment error
The adjustment error of the machine tool refers to the error caused by inaccurate adjustment.
(3) Machine tool error
Machine tool error refers to the manufacturing error, installation error and wear of the machine tool. It mainly includes the guiding error of the machine tool guide rail, the rotation error of the machine tool spindle and the transmission error of the machine tool transmission chain.
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