Borehole processing method of long-range parts

Abstract

The invention discloses a method for processing an internal boring for a long-distance part, which comprises the following steps: clamping two bent plates provided with central holes on the front and the back side surfaces of a bored part, passing a spotting spindle through the central holes of the part and the bent plates to cause the center of the part and the centers of the bent plates to coincide, and pressing and fixing the bent plates; rounding the four main shaft of a boring lathe by using a dial test indicator after detaching the part and the spotting spindle, adjusting the four main shafts of the lathe to be coaxial with the central holes of the two bent plates, and tightly fixing the four main shafts; placing a part to be bored on the boring lathe and positioning through the bent plates, using a second spotting spindle to pass through the bent plates and the part, pressing the part tightly after positioning the part, removing the spotting spindle, and starting boring. The front hole and the back hole of a processed part are coaxial, the hole distance is consistent, the functions of the four shafts of the lathe are brought into full play, the product quality is improved, the boring time is saved, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a boring processing method for long-distance parts. Background technique [0002] Long-distance parts such as the 3.5m connecting rod used in the hydraulic support, which connect the base of the support and the cover beam and support the cover beam, are one of the main force-bearing parts. If the bore center distance of the connecting rod is too large or too small, it will affect The movement track of the bracket; the concentricity of the front and rear holes and the size difference between the hole distances exist in the processing of the long bracket connecting rod. If a group of holes are not concentric, it will affect the assembly and cause uneven force during use. The main reason is that the combined boring machine used for boring long-distance parts has four spindles, but the spindle is too short and the platform is small, so it is impossible to use one boring bar to complete a group of holes, resulting in poor concentric...

AI Technical Summary

Problems solved by technology

[0002] Long-distance parts such as the 3.5m connecting rod used in the hydraulic support, which connect the base of the support and the cover beam and support the cover beam, are one of the main force-bearing parts. If the bore center distance of the connecting rod is too large or too small, it will affect The movement track of the bracket; the concentricity of the front and rear holes and the size difference between the hole distances exist in the processing of the long bracket connecting rod. If a group of holes are not concentric, it will affect the assembly and cause uneven force during use.

The main reason is that the combined boring machine used for boring long-distance parts has four spindles, but the spindle is too short and the platform is small, so it is impossible to use one boring bar to complete a group of holes, resulting in poor concentricity of the holes. Boring bar, machine travel is not enough

And because the platform is too small, it is a waste of time to adjust the spacing of the four axes, and the hole spacing error is large.