JPS59169352A - Coil shaping machine - Google Patents

Abstract

PURPOSE:To accurately shape a flatwise coil in an isosceles trapezoidal shape by sequentially automatically operating functions of end clamping the coil, clamping the linear portion, turning, open shaping, shaping the end and correcting, by preparatory planning directly from a coil shaping drawing. CONSTITUTION:A frame 18 is secured onto a trestle 17, and various shaping mechanisms are placed. First, the linear portions a-b, c-d of a coil 1 before shaping are respectively clamped to clamping mechanisms C1, C2, and end portions (l), (f) are clamped by a clamp 27. Then, the linear portion a-b is raised by a cylinder 44b in a direction of an arrow Alla, and the linear portion c-d is lowered in a direction of an arrow A11b by a cylinder 44a, opened and shaped. Subsequently, the linear portions a-b and c-d are turned in directions of arrows A14a, 14b by cylinders 34a, 34b at the fulcra O, P as centers. Thereafter, it is corrected in a direction of an arrow A12 by a cylinder 50, the end portions (l), (f) are then shaped by a heading machine in a direction of arrow A13 by a cylinder 25, thereby completing the shaping.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a coil forming machine for forming coils mainly used in rotating electric machines.

[Technical background of the invention]

Coils for rotating electric machines are generally made into a planar shape as shown in Figure 1, that is, a flat, almost isosceles trapezoid shape, and are flat-wound into a flat plate to form coil 1.) A coil forming machine as shown in Figure 2 is used. Then, Fig. 2(a).

A coil is produced by molding according to the order shown in (b) and (c).

To explain in detail, Fig. 3 (,) shows the state in which the fill 1 is clamped when viewed from the side, and it is almost the same as the straight part a-b on the upper base side of the equilateral trapezoid in Fig. 1. Grasp the two sides of the lower bottom side straight portion (center) c-d with clamps 77''2 and 3, respectively, and clamp the two ends of end portions t and f with clamps 4.
Hold at 5. The entire cross section taken along line I-I' in FIG. 3(a) is shown in FIG. 3(d). Fig. 3(b) shows the state in which the straight part a-1> is being tension-formed in the direction of arrow A1, and the coil ends t and f are gradually approaching the center of the coil, and the The overall length is shorter than that in Figure 3(a). A cross section taken along the line n-n' in FIG. 3(b) is shown in FIG. 3(e). Figure 3(c) shows the completed tension forming in the direction of arrow A1 of the straight part a-b'6, and Figure 3(f)
shows the state of the coil viewed from the side. After forming the coil, the end portion is straight as shown by the solid line, and the coil is slotted into the stator core as shown by the phantom line in FIG. 4(b).

When putting it in your mouth, use the radius shown in R1 and R2 (Fig. 3 (f)
It is necessary to add a radius (as shown by the dotted line). The worker used a wooden hammer and a batten to correct the shape of the coil end from below, shaping it to the radius shown by the dotted line in Figure 3(f).

As shown in Fig. 2, the conventional coil forming machine grasps the straight parts a-b of the coil 1 with clamps 2, and the straight parts c-d.
′! It is gripped by the il-clamp 3, fitted and held by the end portions t and ff clamps 7''4 and 5, and formed. First, the coil straight portion clamp 2 is pulled in the direction of arrow A1). In other words, it is supported by the bearing 7. Centering around the fulcrum pin 8, the links 9 and 10 are pulled downward in the direction of arrow A1.At this time, the end clamps 4,
5 are arrows A2.5 as the coil 1 deforms. You will be drawn to the A3 direction. Clamp 3 remains fixed and does not move.

As described above, in the conventional coil forming machine, when the coil length, coil cross-sectional dimension, and coil opening angle θ are changed, the coil forming machine requires the following setup change.

The coil opening angle θ was changed by changing the position of the bearing 7 of the fulcrum pin 8, and the coil cross-sectional dimension and length dimension were changed by replacing the entire coil clamp 2.3. The final position of the fulcrum pin 8 is the coil pitch dimension Q shown in Figure 4.
While correcting the position of bottle 8 to obtain the opening angle θ, I tried opening the coil and molding it to obtain the coil dimensions. For this reason, the rounding of the coil is not only a complicated operation, but also requires a lot of setup time for the forming itself.

Furthermore, if the dimensions of the coil are not accurate, there is a risk of damaging the insulation when the core is inserted into the slot, and the assembly process takes a lot of time.

[Purpose of the invention]

The purpose of the present invention is to create a structure in which the setup dimensions of the forming machine can be determined immediately from the coil forming drawings shown in Figures 4(a) and (b), thereby shortening the setup time by 9 hours and improving the precision of the coil forming dimensions. The object of the present invention is to provide a coil forming machine that can be realized and has good workability.

The present invention provides an end clamping mechanism that clamps both ends of the lower bottom of a coil with unevenly-equal-leg trapezoid shape corresponding to the coil end after molding, and an end portion clamping mechanism that clamps both ends of the lower bottom of the coil with unevenly-equal-leg trapezoid shape corresponding to the straight part of the coil after molding. first and second straight portion clamping mechanisms that clamp portions of the upper and lower soles facing the upper base at a plurality of locations whose intervals are adjustable;
, and these first straight section clamp mechanisms.
and first and second turning mechanisms that relatively rotate the second straight part flange mechanism in first and second directions that are different from each other with respect to respective separate axes parallel to the straight part;
The first and second rotating mechanisms are supported respectively, and the first and second rotating mechanisms are connected to third and fourth rotating mechanisms that are perpendicular to the 1,000-turn plane of the coil before forming and that are oriented oppositely to each other.
The first and second opening forming mechanisms are moved relative to each other in the direction of the first and second opening forming mechanisms, and the end section crank mechanism is supported, and the end section crank mechanism is moved along the flat winding surface of the coil before forming and along the eccentric leg. 5th along the height direction of the trapezoid
an end portion forming mechanism that relatively moves in the direction of
Embodiments of the Invention The invention is characterized by comprising a turning mechanism or a correction forming mechanism that relatively moves the first opening forming mechanism in a sixth direction opposite to the fifth direction. The structure of one embodiment is shown in FIGS. 5 to 7.

In FIGS. 5(a) and (b), 17 is a pedestal, 18
is a frame fixed on the pedestal 17. frame 1
8 is equipped with end part forming mechanisms Zl and Z2 that perform so-called overhead forming of the end part, and a slider 21 is provided on a guide rail 19 fixed to the frame 18 so as to be movable in the direction of arrow A4. There is. The slider 21 is the first
The shape of the pre-forming coil as shown in the figure is fixed during molding by simply adjusting the movement each time the overall length changes. A guide rail 22 is fixed on the slider 21 in a state perpendicular to the guide rail 19. A grate 24 is attached to the guide rail 22 so as to be movable in the direction of arrow A5. Yoshi1 is driven. A bearing 26 is fixed on the plate 24, and supports a mounting part 28 of a crank fzv which holds and clamps the coil end portion A and f'i so as to be movable in the direction of arrow A4.

FIGS. 6(a) and 6(b) show a mechanism for turning and opening the coil straight portion c-d, and the clamping mechanism C2 that clamps the coil straight portion c-d is connected to a link mechanism (
(not shown). Although the crunno part is fixed to the arm par 29, it can be adjusted by moving it on the arm par 29 in the direction of arrow A6 each time the length E of the straight coil section (see Fig. 4) changes. The arm par 29 includes two guide plates 31 and a plurality of guide rollers 3.
The cylinder 34a is fixed to the holder 33 supported by the cylinder 34a.
It is possible to move and turn in the direction of arrow A7 with the virtual center at point Ip. One end of the cylinder 34a is supported by a fulcrum pin 35, and the other end on the rod side is connected to the holder 33 by a fulcrum pin 36. The cylinder 34a is provided with a mounting plate 37, and the holder 33 is rotated in the direction of arrow A7 using two guide bars 38 fitted into the mounting plate 37 as a guide, and the stopper 39 can be completely replaced with one touch. The swing opening angle θ can be freely selected. A slide main body 40a is fixed to the guide plate 31, and the slide main body 40a is provided with a guide roller 41 to prevent displacement in the front-back direction and a guide roller 42 to prevent misalignment in the left-right direction.
These guide rollers 41 and 42 are guided by a guide plate 43a fixed to the frame 18. The cylinder 44a fixed to the slide body 40a allows the slide body 40a, the coil clamp mechanism C2, and the entire turning mechanism to be moved in the direction of arrow A8. The rod end of the cylinder 44a is fixed to the frame 17, and the rod end of the cylinder 44a is fixed to the frame 17.
6 is provided with a stopper 42-.
The opening dimension of the coil straight portion can be adjusted by the height dimension 7.

Fig. 7 shows a mechanism for turning and opening forming the straight part a-b of the coil, and the mechanical parts that differ from Fig. 6 are the same operations as in Fig. 6, where the straight part a-b is forming the opening and turning. A detailed explanation of the parts is omitted, but the coil straight part a-bl
) r Clamping mechanism C1 and slide body 40
The entire slide frame 49 to which the guide plate 43b and the guide plate 43b are fixed is provided with a correction mechanism S that moves toward the center of the machine by a cylinder 50. That is, frame 18
Attach the slide base 51 to the slide base 5.
A slider 52 is attached to the cylinder 1 so that the slider 52 can be moved in the direction of arrow A9 by the entire cylinder 50.

The slider 52 is provided with a strike mark A53 and an arrow A9.
The amount of movement in the direction can be adjusted freely, and the scale is engraved so that it can be set to the setup value immediately.

A slide frame 49 is fixed to the slide end 52, and a turning mechanism (6 for shaping the coil to an opening angle θ by turning the holder 33 supported by the cylinder 34b, the guide plate 31 and the guide roller 32) and the coil straight line. Part a-
b'i Mechanism for opening and forming by raising in the direction of arrow AIO (
The cylinder 44b is fixed to the slide body 40b, and the rod tip 46b is fixed to the slide frame 49. By operating the cylinder 44b, the guide roller 40b fixed to the slide body 40b is guided by the guide plate 43b via the guide roller 42 and the slide body 40b rises, and the coil straight portion Open and mold. The degree of opening can be changed easily by providing a stop horn (-55) and a stop horn block 57, and by replacing the short horn or the block 56.

) is fully equipped.

Next, the coil forming operation of the coil forming machine having such a configuration will be explained.

As shown in FIG. 5, the operator clamps the coil straight portions a - b r c - d 'Fr- of the coil 1 before forming by the clamp mechanisms CI and C2, respectively, and the end portions t and f with the clamps 27, respectively. Clamp it. Next, when a push button switch (not shown) is pressed, a predetermined molding process is automatically performed according to a pre-assembled program.

The basic molding sequence will be explained with reference to FIG.

Clamp the coil straight parts a-b and c-d, and close the end part t.
, f are clamped, the first operation is to raise the coil straight part a-b'i in the direction of the arrow A11a by the cylinder 44b, and move the coil straight part c-d to the cylinder 44a, ? It is lowered in the direction of the rainbow arrow 11b to open and form.

The second operation is the coil straight part a-b and the coil straight part c-d.
Each cylinder 34a is centered around virtual fulcrums O and P.

34b in the direction of arrow A 14 a + 14 b to form the coil at an opening angle θ. When the opening forming of the first operation is performed, the end portions t and f contract in the longitudinal direction of the coil (direction shown in FIG. 4F) and are drawn toward each other. The third operation is to perform correction shaping in the direction of the arrow AI2 by the cylinder 50 while keeping the coil straight portion a-b turned.The fourth operation is for each cylinder 25 at the left and right end portions t and 1f shown in the figure. Overhead molding is performed in the direction of arrow A13 to complete molding with the machine. For the R type, repair work is done from the front (left side of section 8) using a wooden hammer and a batten to form and finish the coil into the specified shape, then remove each clamp 7'' and remove the coil mechanically. When the removal is completed, each operation cylinder returns to its original position in sequence, completing the cycle of the coil forming process.The formed coil is formed into a predetermined size and shape as shown in FIG.

This eliminates the need for clamping jigs for each coil cross-sectional dimension in conventional coil forming machines.
The simple clamp clamp can be used for all types of clamps, and the rounded coil end allows correction work to be done from the front in a comfortable position, whereas previously work had to be done from below in an awkward position. The work is much easier and even unskilled workers can do the work, and a molding moving part is configured for each molding dimensional element, and the molding moving part of each of these parts is equipped with 4 removable and replaceable stock horn blocks. Molding dimensions can be easily set and adjusted, shortening setup time, improving coil forming processing accuracy, and improving work efficiency, as well as improving worker safety and reducing fatigue.

〔Effect of the invention〕

According to the present invention, since the operating mechanism is divided for each molding dimension element, the setup dimensions of the molding machine can be easily determined from the coil molding drawing, reducing the setup time and improving the precision of the molding dimensions. A coil forming machine with good workability can be provided.

[Brief explanation of the drawing]

Figure 1 is a plan view showing the planar shape of the coil before molding;
The figure is a perspective view showing the main parts of an example of a conventional coil forming machine, and Figs. 3(a) to 3(f) show the forming order on the same side, respectively. ) is a front view, (d) and (e) are 1-1', U-II'
Arrow sectional view (f) is a side view, Fig. 4 (a),
(b) is a dimensional diagram of the coil in the completed state of molding, and Figure 5 (a)
, (b) are diagrams showing the configuration of an embodiment of the present invention, respectively (,) are top views, FIGS. 6(b) are front views, and FIGS. 6(a) and 6(b) are views showing the same implementation. This figure shows the details of the main part of the mechanism for opening and forming the straight part of the coil in Example 1 and giving the turning angle. FIG. 8 is a front view showing the details of a main part of a mechanism for opening and forming the other coil straight diverting part in the embodiment, turning and corrective forming, and FIG. 8 is a diagram for explaining the forming order of the same embodiment. 1... Coil, 17... Frame, 18... Frame, 21... Slider, 25... Cylinder, 27...
・Kushinpu, 29...Arm par, 31...Guide plate, 32...Guide roller, 34&, 34b...Cylinder, 37...Mounting plate, 39...Stopper, 40a
...Slide body, 43a...Guide plate, 44a.
...Cylinder, 47...Stock horn (,49...Slide frame, 5θ...Cylinder, 51...Slide body, 52...Slider, 53...Stopper, 56...Stock horn or block. 1st factor 2nd figure 3rd figure (a) (b) (c)
(f) Figure 4 (a) (b) Factor 5 (a) (b) 1 Figure 6 (a) (b) Figure 7 Figure 8

Claims (1)

[Claims] In a coil forming machine for forming a flat-wound coil into a predetermined shape into a flat substantially isosceles trapezoid shape, both ends of the lower bottom of the rectangular trapezoid shape of the coil correspond to the coil ends after forming. and an end clamping mechanism that clamps the coil part, and parts of the upper and lower bases of the unevenly legged trapezoid shape of the coil corresponding to the straight part of the coil after molding, each having a plurality of space-adjustable positions. The first and second straight section flange mechanisms are clamped, and the first and second straight section clamp mechanisms are supported, respectively, and the first and second straight section clamp mechanisms are separated from each other parallel to the straight section. a first and a second turning mechanism that respectively rotate relative to each other in first and second directions that work differently with respect to the axis of the and first and second opening forming mechanisms that relatively move the second turning mechanism in third and fourth directions that are perpendicular to the flat winding surface of the coil before forming and opposite to each other, respectively, and the end portion clamping mechanism. an end portion forming mechanism that supports the end portion clamping mechanism and relatively moves the end portion clamping mechanism in a fifth direction along the flat winding surface of the coil before forming and along the height direction of the unevenly legged trapezoidal shape; A coil forming machine comprising: a correction forming mechanism that relatively moves the rotation mechanism or the first opening forming mechanism in a sixth direction opposite to the fifth direction.