Cam is one of the core parts of the circular knitting machine, its main role is to control the movement of the needle and sinker and the form of movement, can be divided into needle (into a circle) cam, half out of the needle (set circle) cam, flat needle (floating line) cam and sinker cam.
Cam of the overall quality of the high and low, circular knitting machines and fabrics will have a great impact, therefore, in the purchase of cams should pay special attention to the following points.
First of all, for different fabrics and fabric requirements to choose the corresponding cam curve. Because the designer of the fabric style pursuit of different, different emphasis, so the cam work surface curve will be different.
Due to the needle or sinker and cam long-term sign of high-speed sliding friction, individual process points at the same time also have to withstand high-frequency impact, so the cam selection of the national ticket Cr12MoV, the material is good hardenability, fire deformation, fire deformation, fire hardness, strength, toughness are more suitable for the cam's requirements. Cam quenching hardness is generally HRC63.5±1. cam hardness is too high or too low will have adverse effects.
Cam curve surface roughness is very important, it really determines whether the cam is good and durable. Cam curve surface roughness, is by the processing equipment, tools, processing technology, cutting and other comprehensive elements of the decision (individual manufacturers cam price is very low, usually in this link to do articles). cam curve work and roughness is generally determined as Ra ≤ 0.8um. work surface roughness is not done well will cause the grinding needle heel, hit the needle, a corner seat heating and other phenomena.
In addition, but also pay attention to the cam hole position, keyway, shape and curve of the relative position and accuracy, these attention is not may produce adverse effects.
Post time: May-23-2024