I. processing procedure
The main surface of guide column is inner cylinder and outer cylinder, and the processing procedure is as follows: inner cylinder: drilling - rough boring - semi-rough boring - rough grinding - fine grinding; For outer cylinder: rough - semi - fine - rough - fine grinding.
II. Hard chrome electroplating
After being treated with chromium electroplating, the molds and workpieces have the following advantages:
1, the surface is smooth, smooth, easy to demoulding, to ensure the smooth, smooth products.
2, will not rust, a little rust spots will not have.
3, the process of the original parts deformation is small, surface chromium plating can enhance the hardness (HR65 above), high temperature resistance up to 500, corrosion resistance, acid resistance, wear resistance.
4, if the part size is not in place, you can add a few C chromium to reach the size.
5, according to the characteristics of the product, to achieve visual, three-dimensional effect, to ensure the stable surface quality of the product.
III. Key technologies and measures taken
1. The main surface is inner cylinder with high dimensional tolerance and small Ra value of surface roughness. Measures taken: divide the processing stage, the process line: drilling - rough boring (expansion) - semi-fine boring (reaming) - rough grinding - fine grinding - grinding; Control cutting parameters; Let cool thoroughly.
2. Due to the high dimensional tolerance level of the outer cylinder and the small surface roughness Ra value, the measures adopted are as follows: the requirements for the division of processing stages, the selection of machine tools and the control of cutting parameters are the same as those for the inner cylinder.
In addition, the process line is: rough car - semi-fine car - rough grinding - fine grinding.
1. Mechanical part of hydraulic cutting machine: it is composed of fuselage, working mechanism and stroke adjusting device. Hydraulic cutting machine also includes sliding saddle moving feeding device and automatic feeding device.
2. Hydraulic system of cutting machine: composed of hydraulic pump, oil cylinder, pressure valve, direction valve, filter, oil tank and pressure gauge.
3, the cutting machine electrical control part: including switches, relays, contactors and other components of the electrical control circuit.