A brush box improved wire cutting tool

Abstract

The invention provides an improved type wire-electrode cutting tool of a brush box. The improved type wire-electrode cutting tool of the brush box comprises a base. The top of the base is transverselyprovided with through holes. Bolts and material release rods are inserted into the holes. The outer ends of the bolts and the material release rods are provided with a pull plate. The bolts are sleeved with springs. The fixed face of the base is detachably covered by a left pressing plate and a tightly-pressing cover plate which are arranged side by side. The left pressing plate is located on theside close to the pull plate. A handle bolt perpendicularly penetrates through the tightly-pressing cover plate. According to the improved type wire-electrode cutting tool of the brush box, the pressing plate assists in pressing, so that a workpiece is tightly attached to the tool, the phenomenon that discharge erosion happens and the workpiece falls off and is damaged by cutting are avoided, andthe machining quality and machining efficiency are improved; under the condition of not changing the precision of locating holes of the tool, an automatic pressing mechanism, a semi-automatic limiting mechanism and a discharging device are additionally arranged, the problems that discharge erosion is caused due to poor contact, the workpiece falls off and is damaged by cutting, and the dimensionexceeds tolerance are solved; according to equipment conditions, a corresponding manner of connecting the improved type wire-electrode cutting tools into a row is adopted to improve machining efficiency; and the improved type wire-electrode cutting tool of the brush box can be applied and popularized to machining of parts with similar low form and location tolerance precision requirements.

Description

technical field [0001] The invention relates to an improved brush box wire cutting tool. Background technique [0002] Such as Figure 4 to Figure 6 The brush box with a side window structure shown is a typical structure commonly used by our factory’s micro motors. The structure is formed by sheet metal, and the side window is processed by wire cutting. [0003] Due to the thin wall and low strength, the window cannot be formed after the window is processed before forming, so the window can only be processed after forming. Milling is not conducive to clamping, the milling force is large, the workpiece is easy to deform, and it does not meet the size requirements of the design drawing. Therefore, the side window can only be processed by wire cutting. [0004] Specifically, due to the tolerance range in part processing, there is a gap in assembly. Before the improvement, when the tooling was used for clamping, due to the existence of gaps, the contact was poor during process...

AI Technical Summary

Problems solved by technology

Before the improvement, when the tooling was used for clamping, due to the existence of gaps, the contact was poor during processing, and the discharge between the tooling and the parts caused local burns on the surface of the workpiece. At the same time, the workpiece had no fixing device, and the workpiece fell under the impact of the cutting fluid. Injured, the tooling is not positioned, the alignment is only based on visual inspection, and the consistency of processing quality is poor

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