Threading-free wire guide nozzle

Abstract

The invention discloses a threading-free wire guide nozzle comprising a cylinder. The middle of the cylinder is provided with a central round hole penetrating the top and bottom of the cylinder. Both ends of the central round hole are provided with wire positioners on the cylinder; the wire positioners are opposite and are fixed to the cylinder through an upper guard and a lower guard; each wire positioner comprises a positioning block and a one-way passage; one side of each positioning block is provided with a semicircular positioning hole; the upper guard and the lower guard on the central round hole are provided with clearance holes; an outer sleeve fixedly covers the cylinder and is provided with a circular water storage groove on one side of the upper guard; the top of the circular water storage groove is provided with a tapered guide groove; the bottom of the circular water storage groove is connected through a plurality of water holes; the outer wall of the outer sleeve is provided with a wire entry penetrating the central round hole from top to bottom. The threading-free wire guide nozzle is free of threading and allows molybdenum wires to be set quickly in a short time, productivity is guaranteed, and parts are replaced less frequently.

Description

technical field [0001] The invention relates to the field of wire cutting equipment, in particular to a thread-free guide wire nozzle. Background technique [0002] Wire EDM equipment is a cutting equipment that is commonly used today. Its manufacturing cost is low and maintenance difficulty is low, so it occupies a large share in the market. [0003] The wire guide nozzle used for positioning in wire electric discharge cutting equipment is a necessary and easy-to-wear device. There are mainly two structures in the market: [0004] One is directly made into a one-piece structure with a through hole in the middle. Molybdenum wire needs to pass through the hole when using it. It has high stability and low replacement frequency. However, due to the high fineness of the hole, it is difficult to pass through. Generally, it takes at least 2 minutes to complete on average, which has high requirements for the operator. [0005] Another way to make two halves of the structure is to...

AI Technical Summary

Problems solved by technology

[0004] One is directly made into a one-piece structure with a through hole in the middle. Molybdenum wire needs to pass through the hole when using it. It has high stability and low replacement frequency. However, due to the high fineness of the hole, it is difficult to pass through. Large, generally takes at least 2 minutes to complete on average, and has high requirements for the operator

[0005] Another way to make two halves of the structure is to directly clamp the molybdenum wire in the positioning hole in the middle by opening and closing. It is easy to operate and the use time is short. However, due to the , it is necessary to spray the machining fluid and wrap the molybdenum wire with the machining fluid before it can be used. When the machining fluid falls back freely, the machining fluid will bring the debris generated by the cutting parts and fall in the middle of the two halves of the structure, making the opening and closing structure unable to be completely closed. , so that the molybdenum wire is fixed in an elliptical structure, which leads to a decrease in processing accuracy, and also causes damage to the guide wire structure and the workpiece during operation, so that the guide wire nozzle has to be replaced, and its general use time is about 5 days. As a result, the replacement frequency of the wire guide nozzle is increased, and the workpiece is also damaged, which increases the manufacturing cost

[0006] None of the above guide wire structures can meet the high-efficiency production of existing equipment, and a new structure needs to be designed to meet the shortcomings

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