The inner hole of die parts is usually processed in the following ways
Drilling in the mold parts with a bit drilling there are mainly two ways: one is a bit rotation, parts fixed not rotation, such as in the common bench drilling machine, rocker arm drilling, boring machine drilling; Another way is to turn the part but not the bit, such as drilling a hole in a lathe. The errors caused by these two different drilling methods are not the same. When drilling on a drilling machine or boring machine, the bit with weak rigidity is easy to be deflected due to the bit rotation, and the center line of the processed hole is offset, but the aperture will not change.
The diameter of the bit is generally no more than 75mm. If the hole diameter is larger than 30mm, it is usually used to drill twice. That is to say, a bit with a smaller diameter (0.5~0.7 times of the hole diameter required) is used to drill first, and then a bit with a suitable aperture is used to drill again until it is machined to the required diameter, so as to reduce the feed force.
The machining accuracy of drill hole can reach IT11~IT13, and the surface roughness Ra is 5.0~12.5um.
Reaming is a machining method of enlarging the aperture of parts with reaming drill. It can be used either as a pre-machining before finishing (reaming, boring) or as a final machining of a less demanding aperture. The machining accuracy of reaming can reach IT10~IT13, and the surface roughness Ra is 0.3~3.2um.
Reaming is a method of machining the aperture of unquenched hole with a reamer. The machining accuracy of reaming hole can reach IT6~IT10, and the surface roughness Ra is 0.4~0.2um. CNC precision die drilling machine: the use of CNC control, user-friendly user interface, easy to operate! Vertical gun drilling is used to achieve accurate aperture and clean hole wall.
Contact person: ma sheng
Mobile phone: 13544053951 (shenzhen)
E-mail: 2424823775 @qq.com
Address: workshop 101, building B6, no.33, xinxia avenue, shanxia community, pinghu street, longgang district, shenzhen city