JPH0433736A - Method for bending piled conductors - Google Patents

Abstract

PURPOSE:To bend each conductor at a small bent radius and to lower the die cost by bending the conductor at the same time as fittings positioned by positioning pins are inserted in sequence with a shift between the conductors. CONSTITUTION:Piled conductors 1a-1e are placed on a lower die 4 and the respective fittings 6a-6d are positioned with a pin 7 and inserted between each conductor 1a-1e. Then, an upper die 5 is lowered and pressed and the conductors 1a-1e are bent at the same time. At this time, the bent radius of each conductor 1a-1e can be restrained by the fittings 6a-6d and the bent radius can be made small. Since bending can be completed at a stroke, the die cost is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a forming operation of an S coil of an exciter.

[Conventional technology]

Figure 2 is a front view showing the bent product shape, and Figure 3 is a front view showing the conventional bending method.
le is a product obtained by bending a straight conductor, and 2 and 3 are a lower die and an upper die for individually bending the conductors 1a to Ie.

Next, the bending work will be explained.Coil la.

The linear conductors laminated as lb, lc, and ld are shifted from the coil 1a in the order of molding, and the lower mold 2 of the conductor shape is
, an upper mold 3 is set, and pressure molding is performed using a press.

[Problem to be solved by the invention]

The conventional stepped bending method requires an upper die and a lower die for each shape of the conductor, and the bending operation must be performed one by one, resulting in problems such as a large amount of bending time.

This invention was made in order to solve the above-mentioned problems, and aims to provide a bending method that can reduce the number of mortar molds required for manufacturing and shorten the working time. .

[Means to solve the problem]

The bending method according to the present invention includes inserting a metal fitting positioned between stacked conductors, and bending the lower mold.

Bending is performed simultaneously using the upper die.

[Effect]

In this invention, the bending radius of each conductor is restrained by the metal fittings inserted during the bending process, so that a small bending radius process is possible, and the bending process can be performed all at once.

〔Example〕

An embodiment of the invention will be described with reference to FIG.

In the figure, 4 and 5 are a pair of lower and upper molds that shape the bending shape, 6a to 6d are metal fittings that are inserted between each conductor 1a to 1e and determine the bending position at the tip, and 7 is a Lower mold 4. Upper mold 5. These are positioning pins inserted into the metal fittings 6a to 6d.

Next, the operation will be explained. The laminated conductors are placed on the lower die 4, positioned between the conductors 1a-1e using pins 7, and the metal fittings 6a-6d are inserted. Next, the conductors 1a to 1e are simultaneously bent and formed by pressing down the upper die 5 fixed to the press. At this time, the bending R of each conductor is restrained by the metal fittings 6a to 6d, and the bending R of the conductor can be reduced.

〔Effect of the invention〕

As described above, according to the present invention, since the bending radius of each conductor is restricted by the metal fittings inserted during bending, it is possible to perform a small bending radius, eliminating the need for bending each conductor side, and Since bending can be done all at once, mold costs are low and machining is easy.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a front view showing a bent product, and FIG. 3 is a front view showing a conventional bending method. In the figure, Ia to 1e are conductors, 4 is a lower mold, 5 is an upper mold, and 6a to 1e are conductors.
6d is a positioning metal fitting, and 7 is a positioning pin. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] In the bending method for laminated conductors, which involves bending a straight conductor by pressure-forming it with an upper die and a lower die, metal fittings positioned by positioning pins are inserted between each conductor in a sequentially shifted manner. A method for bending laminated conductors, characterized by bending each conductor at the same time.