Large-tonnage helical broaching machine

Abstract

The invention discloses a large-tonnage helical broaching machine. The large-tonnage helical broaching machine comprises a lathe body, a base, a main clamp cutter body, a broaching tool, a main sliding plate, a tool magazine, an automatic discharging mechanism, an automatic feeding mechanism, a pushing device, a workpiece pressing device, a cutter receiving and conveying mechanism, a servo drivingdevice, an electrical control cabinet and a hydraulic system, wherein the tool magazine is arranged at the rear side of the lathe bed, and the tool magazine comprises a tool magazine frame body, at least two broaching cutters and a positioning tool matched with the broaching cutters; the positioning tool comprises a clamping jaw, a pressing ring and a positioning plate; the broaching cutters areplaced on a tool holder arranged on one side of the tool magazine frame body, and the other side of the tool magazine frame body is sequentially provided with a clamping jaw frame for containing the clamping jaw, the pressing ring and the positioning plate, a pressing ring frame and a positioning plate frame from bottom to top; and the tool holder, the clamping jaw frame, the pressing ring frame and the positioning plate frame are each provided with a proximity switch internally, and the proximity switches are electrically connected with an alarm device. According to the large-tonnage helicalbroaching machine, large inner spiral gear rings in various heavy machinery fields can be machined, the broaching force is up to more than 25 tons, the stroke length can reach 2000mm, automatic feeding and discharging can be achieved, and the phenomenon of errors caused by manual tool taking can be effectively avoided.

Description

Technical field [0001] The invention relates to a machine tool, in particular to a large-tonnage screw broaching machine. Background technique [0002] At present, the pull-up internal broaching machines are mostly small-tonnage spiral broaching machines of less than 20 tons. Due to the force of the main sliding plate and the torque, the worktable is deformed, and the transmission accuracy of the main screw and the feedback accuracy of the numerical control system are not high. , It directly affects the broaching accuracy of the workpiece, and cannot meet the machining accuracy requirements of the existing 5-level gear; and there is no automatic loading and unloading device, the manual labor intensity of the machine tool processing the workpiece is high, so the force on the workbench is below 20 tons, which is not suitable Used for processing large internal splines, internal gears, internal holes and special-shaped holes. [0003] CN 202461672 U discloses a large-tonnage double-cy...

AI Technical Summary

Problems solved by technology

This internal broaching machine is not suitable for the processing of workpieces such as large modulus and high-precision internal helical gear rings. The broaching force is ≤20 tons, the broaching stroke is short, and there is no automatic loading and unloading device. The degree of automation is low and the labor intensity is low. Large, and it does not have an intelligent tool selection system, and its broaching tools are prone to damage due to human factors.

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