Preformed armour rod hemispherical end forming tool bit and forming device applying tool bit

Abstract

The invention discloses a preformed armour rod hemispherical end forming tool bit and a forming device applying the tool bit, and belongs to the technical field of power fitting production and manufacturing. The problems that traditional preformed armour rod end forming machining is slow in speed or complex in machining equipment structure design are solved. The tool bit mainly comprises four metal strips which are identical and square in cross section, a sub-tool bit is arranged at the end head of each metal strip, and the forming device comprises a workbench, a power unit, a clamping unit and a guiding unit. According to the tool bit and the forming device applying the tool bit, the preformed armour rod end head forming machining problem is effectively and reliably solved at a very low cost, and the tool bit has important significance in the field of power fitting preformed armour rod forming.

Description

technical field [0001] The invention belongs to the technical field of electric power fittings production, manufacturing and processing. Specifically, it relates to a kind of ingenious design concept, fast forming speed of the pre-twisted wire hemispherical end, easy processing of the cutter head, effective avoidance of pre-twisted wire tip discharge phenomenon, and effective protection. Grid-safe pre-twisted hemispherical end forming head; the invention also relates to a forming device in particular using the same. Background technique [0002] Pre-twisted wire is a connecting fitting for overhead power conductors and power overhead optical cable terminals, suspensions, joints, etc. Pre-twisted wire generally includes aluminum wire pre-twisted wire and aluminum-clad steel pre-twisted wire. Among them, pre-twisted aluminum wires are widely used as mainstream wires. We know that on high-voltage lines of 110kV and above, uneven conductors or fittings produce uneven electric ...

AI Technical Summary

Problems solved by technology

[0003] At the beginning, the shape of the end of the pre-twisted wire is manually polished on the grinding wheel to obtain the desired shape based on the feel and experience. The forming speed is slow and the product consistency is relatively poor. For products that are not well polished, there will still be hidden dangers of corona.

There are also some molds that are pressed and formed by molds, but there will be edges, corners and burrs at the joint of the upper and lower molds, which require manual secondary grinding. The process cycle is long, the processing speed is slow, and the production cost is high.

Later, some companies also introduced automation equipment, but the design of automation equipment is very complicated, the manufacturing cost is high, and the maintenance cost is also high.

For example, the authorized announcement number is CN101695733B, the authorized announcement date is 2011.08.17, and the invention name is a Chinese patent for a parrot-shaped hanging pre-twisted wire forming equipment and its forming method. The fully formed automation equipment mainly includes "chassis, main motor, worm gear, worm, cutting, motor, contact switch, control cam, guide rail groove, tightening wheel, bracket and foot switch; worm gear and worm are installed on the On the upper part of one side of the chassis, four control cams are installed on the worm gear shaft, which are respectively the first control cam, the second control cam, the third control cam, and the fourth control cam; four contact switches are installed on the lower part of the control cam , are respectively the first contact switch, the second contact switch, the third contact switch, and the fourth contact switch, and the four control cams correspond to the four contact switches respectively; the main motor is installed on one side of the chassis, and the main motor A small pulley is installed on the output shaft, and a large pulley is installed at one end of the worm. The small pulley passes through the transmission belt, and the transmission worm and the worm wheel drive the four control cams on the worm shaft to run; the cutting motor is installed on the upper part of the case. The output shaft of the cutting motor is equipped with a cutting head. , one side of the motor output shaft is equipped with a guide rail groove, the front end of the guide rail groove has a limiter, and a tightening wheel is installed outside the guide rail groove, and the tightening wheel is installed on the other end of the worm gear shaft; the bracket is installed on the chassis, and the foot switch It can be seen that the technical solution is very complicated. For mechanical equipment, the complex structure will not only bring about high cost, but also a series of problems such as high failure rate and high maintenance cost.

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