Vertical pull-up external broaching machine

Abstract

The invention relates to a vertical pull-up external broaching machine, and belongs to the field of broaching machines. The external broaching machine comprises an external broaching machine body, a slide carriage connected to the external broaching machine body in a sliding mode, a transmission device arranged between the external broaching machine body and the slide carriage and used for driving the slide carriage to ascend and descend, a tool clamp fixedly arranged on the slide carriage, a broaching tool detachably connected to the tool clamp, a workbench fixedly arranged on the external broaching machine body, a machining base abuts against the workbench and used for containing a workpiece, a clamping mechanism arranged on the workbench and used for clamping the workpiece, and a lifting mechanism arranged between the machining base and the workbench and used for driving the machining base to ascend and descend; a guide hole is formed in the machining base, and the broaching tool can slide in the guide hole; and the clamping mechanism comprises two clamping plates, two linkage assemblies arranged between the two clamping plates, a self-locking driving assembly arranged on one side of one linkage assembly and a guiding piece arranged between the clamping plates and the workbench. According to the vertical pull-up external broaching machine, the machining quality of the workpiece is improved.

Description

technical field [0001] The present application relates to the field of broaching machines, in particular to a vertical pull-up external broaching machine. Background technique [0002] Broaching machine is a machine tool that uses a broach as a tool to process through holes, planes and formed surfaces of workpieces. Broaching can obtain high dimensional accuracy and small surface roughness, high productivity, and is suitable for mass production. [0003] At present, the external broaching machine includes a frame, a slide, a transmission device, a tool holder, and a broach. The transmission device is used to drive the slide to slide up and down, thereby driving the broach installed on the tool holder to process the workpiece; When the bed is in use, the broach and the part to be processed are huge. If the workpiece is affected by an external force during the processing, the workpiece will be unstable, so that the center of the hole on the workpiece to be processed will devia...

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Problems solved by technology

[0003] At present, the external broaching machine includes a frame, a slide, a transmission device, a tool holder, and a broach. The transmission device is used to drive the slide to slide up and down, thereby driving the broach installed on the tool holder to process the workpiece; When the bed is in use, the broach and the part to be processed are huge. If the workpiece is affected by an external force during the processing, the workpiece will be unstable, so that the center of the hole on the workpiece to be processed will deviate from the center line of the broach, which will affect the processing of the workpiece. Accuracy, which in turn affects the quality of the workpiece, and even causes damage to the broach

[0004] In view of the above-mentioned related technologies, the inventor believes that there is a defect that the hole position is easily deflected when the external broaching machine processes the holes on the workpiece, which affects the processing quality of the workpiece

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