Vertical external broaching machine for broaching internal tongues and grooves of circular workpieces

Abstract

The invention relates to a vertical external broaching machine for broaching inner mortise grooves of ring-shaped workpieces, comprising: a base; a broaching workbench for placing ring-shaped workpieces to be broached; The slide plate is provided with a tool; the broaching workbench includes: a fixed base with an arc-shaped notch, the inner wall of the arc-shaped notch is a cylinder with a C-shaped cross section and an upward opening On the surface, the inner wall of the arc-shaped notch has a first slide rail that is consistent with the bending direction of the arc-shaped notch; the arc-shaped slide seat is slidably connected to the first slide rail of the fixed base; the first driving mechanism, the power action The end is connected with the arc-shaped sliding seat, so that the arc-shaped sliding seat can be driven to slide back and forth along the first slide rail; the first locking mechanism is set between the fixed base and the arc-shaped sliding seat, and is used to lock the arc-shaped sliding seat on the When sliding to any angle position along the first slide rail, it is locked with the fixed base.

Description

technical field [0001] The invention relates to the technical field of broaching machines, in particular to a vertical external broaching machine used for broaching inner tongues and grooves of annular workpieces. Background technique [0002] Aviation parts such as disk workpieces (such as worm gear disks) or some annular thin-walled workpieces have special requirements such as high temperature resistance and corrosion resistance. processed material. The internal mortise and groove of annular thin-walled workpieces on aircraft engines are generally processed by traditional techniques such as slotting, planing and milling. However, slotting, planing and milling are single-tooth and single-edge cutting, and the tools are easy to wear. The loss of the tool is large, and there are frequent impacts on the workpiece, and the toughness of the workpiece is very strong, which results in a low pass rate of the workpiece. [0003] According to the characteristics of circular thin-wa...

AI Technical Summary

Problems solved by technology

The internal mortise and groove of annular thin-walled workpieces on aircraft engines are generally processed by traditional techniques such as slotting, planing and milling. However, slotting, planing and milling are single-tooth and single-edge cutting, and the tools are easy to wear. The loss of the tool is large, and there are frequent impacts on the workpiece, and the toughness of the workpiece is very strong, which results in a low pass rate of the workpiece

[0003] According to the characteristics of circular thin-walled workpieces, it is not suitable to use an internal broaching machine to broach the internal tenon groove of the workpiece, because the tools used for internal broaching are generally integral broaches, and the shape of the broaching hole will be relatively single, which is not suitable for broaching. Suitable for complex dovetail grooves, pine grooves and other complex internal tenon and groove processing

However, if an ordinary external broaching machine is used, although the tool is a combined broach, some workpieces have inclination angles and cone angles in the inner tenon grooves, and the inclination angles and cone angles of different specifications of workpieces are different. The internal mortise and groove workpieces cannot meet the requirements

[0004] Because the annular thin-walled workpiece itself is difficult to process, if the annular thin-walled workpiece cannot be effectively clamped, and is directly subjected to the high-speed impact of the broach, the annular thin-walled workpiece is easily deformed, resulting in a high rejection rate of the workpiece; secondly , the broaching tool directly broaches the annular thin-walled workpiece, which also causes high tool wear and greatly reduces the service life of the tool; moreover, for the broaching of the above-mentioned annular thin-walled workpiece, especially in high-speed broaching During the cutting process, many burrs are easily generated on the two end faces of the ring-shaped workpiece, which requires subsequent manual deburring, which takes up a lot of labor costs

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