A device for machining arcs and slopes at the root of deep inner holes on a lathe

Abstract

The invention discloses a device for processing an arc and a slope at a root of a deep inner hole in a lathe. The device comprises a main body (2), a knife box (3) and a support ring (4), which are assembled together from right to left in sequence and are coaxial, and a copying lathe tool (5), wherein a clamping part (2-0) connected to a lathe carriage is arranged at the right side of the main body, the axial length from the left end of the clamping part of the main body to the left end of the knife box is equal to or greater than the depth of the processed deep inner hole, the copying lathe tool comprises a lathe tool body (5-0) and a tool bit (5-1), wherein the shape and the size of the part, which is positioned at the outer end of the lathe tool body, of the tool bit are the same as the shapes and the sizes of the arc and the slope at the root of the processed deep inner hole, the lathe tool body (5-0) of the copying lathe tool is axially vertical to the knife box (3) and is adjustably assembled at the inner side of the left end of the knife box, the tool bit (5-1) extends out of the knife box (3), and the support ring is assembled on the left end of the knife box and extends outwards. The device has the advantage of higher processing precision.

Description

technical field [0001] The invention relates to a mechanical manufacturing device, in particular to a device for processing arcs and slopes at the root of deep inner holes on a lathe. Background technique [0002] There is a deep bore in parts in some special machines, see figure 1 and figure 2 , the depth L of the deep inner hole 10 is greater than or equal to 650mm, and the ratio of the depth L to the diameter d is L / d>5. The left root of the deep inner hole 10 is formed by an arc R and an inclined plane P connected to the arc R. A positioning hole 11 communicating with the deep inner hole and having a smaller diameter than the deep inner hole is provided at the left end of the left root of the deep inner hole 10 . Due to the large depth L of the deep inner hole 10 and the large area of ​​the arc R at the left bottom and the inclined plane P, when a general deep hole machining tool is used for processing, the rigidity of the cutter bar of the tool is not enough, causin...

AI Technical Summary

Problems solved by technology

Due to the large depth L of the deep inner hole 10 and the large area of ​​the arc R at the left bottom and the inclined plane P, when a general deep hole machining tool is used for processing, the rigidity of the cutter bar of the tool is not enough, causing the tool to be deflected and cut. The vibration is large, the amount of cutting is difficult to control, chip breaking and chip removal are difficult, thermal conductivity is poor, cooling and lubrication are not easy, and the tool rigidity is poor, easy to shake, vibrate, deform, break, etc., and the deep hole is also prone to damage due to vibration. When the diameter becomes larger and the taper appears, the machining accuracy of the arc R at the bottom and the slope P is not easy to be guaranteed, resulting in unqualified machining

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