JP2007307603A - Forming processing unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a forming processing unit capable of performing various forming processings different in forming processing extent. <P>SOLUTION: A cam follower 16 is provided on a slide plate 15 with a forming punch 18 mounted thereon, the cam follower 16 is urged and abutted on a cam curve formed on an outer circumferential surface of a rocking cam 11, and the rocking cam 11 is turned by a servo motor 10. The slide plate 15 and the forming punch 18 are moved straight, and a metal frame is formed by the forming punch 18. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a forming unit for forming a metal frame.

  Conventionally, when an electronic component or the like is manufactured, a metal member is often used as one of its constituent members. FIG. 2 is a perspective view showing the manufacturing process of the electronic component. As shown in FIG. 2, the metal members constituting the electronic component 101 are supplied in the form of a metal frame 102, and are formed in a predetermined pattern before forming as shown on the left side of FIG. Yes. Then, as shown on the right side of FIG. 2, the forming process is performed, and other components are attached to the formed metal frame 102 by various methods, and the electronic component 101 is manufactured. The electronic component 101 is separated from the metal frame 102 to form a single piece of electronic component 101.

  The forming process of the metal frame 102 as described above is performed by a multi-forming machine 111 as shown in FIG. FIG. 3 is a perspective view showing an outline of the multi-forming machine. As shown in FIG. 3, a forming unit mounting plate 112 is provided on the front side of the multi-forming machine 111, and a forming unit 113 is provided at the center thereof. As shown in FIG. 3, on the side of the forming portion 113, a metal frame supply portion 114 for supplying the metal frame 102 shown in FIG. 2 to the forming portion 113 shown in FIG. A metal frame extraction part 115 for extracting the frame 102 is provided. Further, as shown in FIG. 3, processing punch slide units 116 are provided above and below the forming processing unit 113, respectively. A plurality of forming unit attachment holes 117 are provided around the forming unit 113, and the forming unit 118 is attached to these positions.

  As a conventional forming unit, there is one as described in Patent Document 1. FIG. 4 is a cross-sectional view showing a main part of a conventional forming unit described in Patent Document 1.

  As shown in FIG. 4, the conventional forming unit 118 has a support 122 that moves linearly along the slide guide 121. The support 122 abuts on a cam 123 shown in the upper part of FIG. 4 and is driven by the rotation of the cam 123 to reciprocate linearly. And this cam 123 is rotationally driven by rotation of the cam drive shaft 124 connected with the drive source which is not shown in figure.

  As shown in FIG. 4, a machining punch 125 is incorporated in the support 122, and the machining punch 125 can move linearly along the machining punch slide guide 126 inside the support 122. The biasing body 127 is biased upward in FIG. The processing punch 125 has a lower end portion shown in FIG. 4, that is, a processing end portion 125a protruding from the support 122, and the metal frame 102 (see FIG. 2) is formed at the processing end portion 125a. Is done. The upper end portion of the processing punch 125 shown in FIG. 4, that is, the contact end portion 125b has a predetermined inclined surface, and this inclined surface contacts the lower inclined surface of the wedge 128 shown in FIG. It touches.

  The wedge 128 is movable in the left-right direction within the support body 122 shown in FIG. A plurality of engaging recesses 128a are formed on the upper plane of the wedge 128 shown in FIG.

  As shown in FIG. 4, a drive body 129 is provided at a position facing the engagement recess 128 a of the wedge 128. The driving body 129 is movable by a distance P in the left-right direction from the center position shown in FIG. The movement of the driving body 129 in the left-right direction is performed by driving the cylinder 130 or the cylinder 131. When the driving force of the cylinder 130 or 131 is not working, the driving body 129 is positioned at the center position by the left and right springs 132 and the spring 133 shown in FIG. Further, as shown in FIG. 4, the driving body 129 has an engaging convex portion 129 a that can be protruded and retracted downward, and this engaging convex portion 129 a has a shape that engages with the engaging concave portion 128 a of the wedge 128. It has become.

  The forming unit 118 configured as described above operates as follows.

  That is, when forming the metal frame 102 (see FIG. 2), the support 122 moves linearly by the amount of displacement of the cam 123 by rotating the cam 123 in one direction shown in FIG. The machining end 125a of the machining punch 125 incorporated in the support 122 abuts on the metal frame 102 (see FIG. 2), and performs a predetermined forming process.

  Then, when it is desired to change the forming amount and perform a predetermined forming process, the contact position between the inclined surface on the lower side of the wedge 128 and the inclined surface of the contact end portion 125b of the processing punch 125 shown in FIG. By changing the two dead center positions (top dead center position and bottom dead center position) of the machining end portion 125a of the machining punch 125, the forming amount is changed.

At this time, the engaging convex portion 129a of the driving body 129 shown in FIG. 4 is engaged with the engaging concave portion 128a of the wedge 128, and in this state, the driving body 129 is moved in the left-right direction by the cylinder 130 or the cylinder 131. As a result, the wedge 128 is moved in the left-right direction, and the contact position between the inclined surface on the lower side of the wedge 128 shown in FIG.
JP-A-7-178478

  In the conventional configuration described above, the change in the amount of forming process is limited by the number of engaging recesses 128a of the wedge 128, making it difficult to perform various types of forming processes having different amounts of forming process.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a forming unit capable of performing various forming processes with different forming amounts.

  In order to achieve this object, the present invention provides a servo motor for rotating a swing cam, a slide plate that is driven by the swing of the swing cam and moves linearly, and a machining punch attached to the slide plate. It is set as the structure which has these.

  According to the forming processing unit of the present invention described above, by changing the rotation angle of the servo motor, various types of change of the dead center position (top dead center position and bottom dead center position) or the movement amount of the machining punch can be performed. Thus, various types of forming processing with different forming processing amounts can be performed.

(Embodiment 1)
Hereinafter, the forming unit in Embodiment 1 of the present invention will be described with reference to the drawings.

  FIG. 1 is a partial cross-sectional front view showing a forming unit in Embodiment 1 of the present invention.

  As shown in FIG. 1, the forming unit is attached to a forming unit mounting plate 1 of a multi-forming machine (not shown) via a mounting plate 2. A bearing block 3 and a reducer block 4 are attached to the attachment plate 2.

  As shown in FIG. 1, a bearing 5 and a bearing 6 are attached to both ends of the bearing block 3, and a shaft 7 is rotatably supported by the bearing 5 and the bearing 6. A reduction gear 8 is attached to the reduction gear block 4 on the left side of the shaft 7 shown in FIG. 1, and an output shaft 8 a of the reduction gear 8 is connected to the shaft 7 by a coupling 9. . Further, as shown in FIG. 1, a servo motor 10 is connected to the speed reducer 8.

  A swing cam 11 is attached to the right side of the shaft 7 shown in FIG. The swing cam 11 has a cam curve formed on the outer peripheral surface, and this cam curve is a constant velocity curve.

  Two struts 12 are provided so as to sandwich the swing cam 11 therebetween. In FIG. 1, only one support column 12 is shown. A linear guide holder 13 is attached to the end portions (right side in FIG. 1) of the two columns 12 so as to connect the two columns 12, and the linear guide 14 is attached to the linear guide holder 13. And a slide plate 15 is attached to the linear guide 14. The slide plate 15 is guided by a linear guide 14 and can move linearly.

  A cam follower 16 is attached to the slide plate 15, and an urging member 17 is provided between the slide plate 15 and the support column 12 so that the cam follower 16 contacts the outer peripheral surface of the swing cam 11. The cam follower 16 is always urged to the outer peripheral surface of the swing cam 11 by the urging force of the urging body 17.

  Further, as shown in FIG. 1, a processing punch 18 is attached to the lower end portion of the slide plate 15 shown in FIG. 1, and this processing punch 18 is guided by a processing punch slide unit 19 so that the straight line of the slide plate 15 is aligned. Along with the movement, it moves linearly with high accuracy.

  Next, the operation of this forming unit will be described.

  When the servo motor 10 shown in FIG. 1 rotates, the swing cam 11 rotates via the speed reducer 8, the coupling 9, and the shaft 7. The slide plate 15 is driven via the cam follower 16 biased to the outer peripheral surface of the moving cam 11 and is linearly moved by being guided by the linear guide 14. As the slide plate 15 moves linearly, the machining punch 18 attached to the slide plate 15 is guided by the machining punch slide unit 19 and linearly moves. The machining punch 18 performs a predetermined forming process on a metal frame (not shown).

  Next, the servo motor 10 rotates in the opposite direction by the same angle, and accordingly, the swing cam 11 rotates or swings in the opposite direction by a predetermined angle, thereby causing the machining punch 18 to be dead. A linear movement from the point position to the top dead center position completes a series of operations.

  More specifically, first, the machining punch 18 is at the upper dead center position (ie, the top dead center position) shown in FIG. 1, and the swing cam is arranged so that the machining punch 18 is disposed at this position. 11 is held at a predetermined angle.

  Next, the oscillating cam 11 is rotated or oscillated by a predetermined angle so that the machining punch 18 linearly moves to a position where a predetermined forming process is completed, that is, a bottom dead center position. This rotation drive (oscillation drive) is performed by the servo motor 10, and the servo motor 10 is rotated by an amount necessary for a predetermined rotation, that is, oscillation of the swing cam 11. As a result, the rotation of the servo motor 10 causes the machining punch 18 to linearly move to a predetermined position and form a metal frame (not shown) by a predetermined forming amount.

  Thus, the machining punch 18 moves linearly by the rotation angle of the rocking cam 11, that is, the rocking amount. Therefore, by controlling the rotation amount of the servo motor 10, the machining punch 18 is moved to a predetermined forming position. The position at which the machining is completed, that is, the bottom dead center position, can be easily changed, and various types of forming processing with different forming processing amounts can be realized with high accuracy.

  As described above, the forming unit of the present embodiment controls the rotation amount of the servo motor 10 to easily change the position where the processing punch 18 completes the forming process, that is, the bottom dead center position. Various types of forming processes with different amounts of forming process can be realized with high accuracy. Further, not only the bottom dead center position of the machining punch 18 but also the top dead center position can be easily changed, and the movement amount of the machining punch 18 can be easily changed.

  Further, the configuration for changing the amount of forming processing, that is, the bottom dead center position of the processing punch 18, becomes simple, and the forming processing unit can be configured compactly.

  Further, the swing cam 11 is used to drive the machining punch 18, and the operating angle of the swing cam 11 can be increased. As a result, the swing cam 11 has a small diameter. And the forming unit can be made more compact.

  Further, when the swing cam 11 is not reduced in diameter, the amount of displacement as the cam can be increased, so that the amount of movement of the machining punch 18 can be increased, and forming processing with a large amount of forming processing is realized. can do.

  Further, since the cam curve formed on the swing cam 11 is a constant velocity curve, the forming force can be made uniform over the entire moving stroke of the processing punch 18 and stable forming processing can be realized. .

  Since the forming unit according to the present invention can perform various forming processes with different forming amounts, it is useful as a forming unit for forming a metal frame.

Cutaway sectional view showing the forming unit in the first embodiment of the present invention. Perspective view showing the manufacturing process of electronic components Perspective view showing the outline of the multi-forming machine Sectional drawing which shows the principal part of the conventional forming unit

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Forming processing unit mounting plate 2 Mounting plate 3 Bearing block 4 Reducer block 5 Bearing 6 Bearing 7 Shaft 8 Reducer 8a Output shaft 9 Coupling 10 Servo motor 11 Oscillating cam 12 Strut 13 Linear guide holder 14 Linear guide 15 Slide plate 16 Cam follower 17 Biasing body 18 Processing punch 19 Processing punch slide unit

Claims (2)

A servo motor that rotates the swing cam;
A slide plate that is driven by the swing of the swing cam and moves linearly;
A forming unit having a processing punch attached to the slide plate. The cam curve formed on the swing cam is a constant velocity curve,
The forming unit according to claim 1.

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