JPS6234702A - Complex machining equipment changeable in machining system - Google Patents

Abstract

PURPOSE:To permit to cope with any change in a machining system in a complex machining equipment changeable in its machining system of small works such as electric parts etc. by installing work elements having respectively independent driving sources on a common bed and controlling them by one control device. CONSTITUTION:Press devices 3, 4, 7, 8 and a welding device 5 installed on the top face 1a of a common bed 1 are actuated by a operational panel 16. In machining a lead-wire for a lead switch relay, a wire material 9 serving as carrier is supplied by a feeder 2 from the right direction (arrow sign), a lead-wire 10 is supplied by a feeder 6 from the right angle direction. Sequential necessary machinings such as machin ing of a pilot hole 9a, a nib 9b and welding, cutting etc. of the lead-wire 10 are made by each press and welding devices respectively and thus sub-assembly of the lead-wire is completed. When the shape and size of a work are changed, fundamental action of each work element remains same, therefore it is possible to cope with the change by moving and fixing optionally each work element along the common bed 1. Further more, since each driving source is independent, unnecessary work elements can be paused optionally.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a composite machining system in which a plurality of work elements are combined and a machining system is variable.

More specifically, the present invention combines a plurality of work elements for performing operations such as punching, molding, assembly, and processing on plates, strips, or wires made of metal and non-metal materials. A multi-tasking machine with an extremely wide degree of freedom in selecting methods and a variable machining system that can quickly respond to changes in machining methods, and is particularly effective for machining small workpieces of a wide variety of products and produced in medium to small quantities. Regarding.

(Prior art) Conventionally, lead wires for capacitors, lead wires for light emitting diodes, wire wires for electron tubes, lead wires for reed switch relays, pin terminals for lead wire connectors for crystal resonators, contacts and contact pieces for switch relays, etc. There are many types of small workpieces, such as various electrical parts, and they vary in size and shape depending on the purpose and standard, so the production quantities vary widely, from large quantities to small and medium-sized identical products.

Conventionally, at production sites for small workpieces such as the various electrical components mentioned above, the following procedure is carried out.

That is, the production of large quantities of products is handled by a dedicated machine in which a plurality of work elements each having a preset function are fixedly installed. This special machine is equipped with a special mold.

The production of small and medium-sized products is handled by repurposing the above-mentioned dedicated filter and modifying and manufacturing a dedicated mold within the scope of its function according to the specifications of the workpiece.

[Problem that the invention seeks to solve]

However, when producing products produced by small and medium-sized enterprises using a special machine and a special mold, there are the following problems.

Because it uses a special machine with preset functions, fixedly installed working elements, and mechanically connected to each other, it can only be used to produce products with specific shapes and dimensions, and for workpieces produced in small quantities. If you install a dedicated
The operating rate of the dedicated machine is low and the efficiency of capital investment is low.

Since it is a special-purpose machine and is basically designed to be mechanically coupled to suit the production of a specific product, there is little freedom for each machine and it is not easy to make detailed changes to the specifications according to the product specifications. . Therefore, even when trying to handle a wide variety of workpieces, the degree of freedom of the machine is limited, which limits the degree of freedom of mold design, making it impossible to select the optimal system, which may reduce product reliability. This leads to increased costs.

In the design of conventional dedicated machines, special molds are required for each workpiece, so as the number of products increases, the number of molds increases accordingly, the cost of preparing molds increases, and the cost of molds increases. Management becomes complicated, and the setup change time associated with changes in workpieces becomes longer.

[Means for solving problems]

In the present invention, when processing a plurality of work elements in combination, each work element is equipped with an independent drive source, and each work element is moved arbitrarily along one common bed common to the Kaloe machine. It is configured so that it can be fixed.
The driving source for each work element is one control 1 common to the processing machine.
A multi-tasking machine having a variable machining system, which is electrically connected to one unit and in which the operation of each of the work elements fixed at arbitrary positions on the common bed is controlled by the control device. This solves the problems associated with the above-mentioned conventional techniques.

[Effect]

As mentioned above, we manufacture various products such as lead wires for capacitors, lead wires for light emitting diodes, wire wires for electron tubes, lead wires for reed switch relays, pin terminals for crystal resonator lead wire connectors, contacts and contact pieces for switch relays, etc. There are many types of small workpieces such as electrical parts, and their sizes and shapes vary depending on the application and standard, so the production volume varies widely from large items to small and medium-sized concave items, making it difficult for conventional multitasking machines to do so. In this case, a plurality of work elements are combined to perform operations such as punching, forming, assembling, and processing on plates, strips, or wires made of metal and non-metallic materials.

As a typical example, let's consider the processing of reed switches.

FIG. 3 is a structural diagram of a reed switch to be produced by a multi-tasking machine. When producing this switch, a contact portion 12 is plated on a lead wire 11 having a wire diameter of dφ and a wire length of f. After the two lead wires 11 are sealed in a glass tube 13 with their contact portions 12 facing each other, an inert gas 14 is filled in the glass tube 13.

In the manufacturing process of lead wires for reed switch relays, in order to reliably seal the glass tube 13, the end portion 11a of the lead wire 11 is attached to a carrier 15 having a length C shown in FIG.
welded with rJAe for a predetermined period, and the opposite end 11b
crush. (The processed portion of the tip 11b is hereinafter referred to as the 0 part in this specification.) Note that the 0 part may be bent if necessary.

Thereafter, the contact portions 12 are plated to form the lead wire subassembly shown in FIG. Note that a pilot hole 15a is already formed in the carrier 15 at a predetermined interval starting from a distance 11a from the end.

The lead wire subassembly thus obtained is transferred to the next process. In the next step, two sets of lead wire sub-assemblies are inserted into the pilot holes 1 of the carrier 15, respectively.
5a as a reference point, the glass tube 13 is sealed and an inert gas 14 is filled using a special mold and a special machine, thereby producing a completed reed switch as shown in FIG.

There are many kinds of reed switches, and they have different sizes and shapes, so the production volume varies widely, from the largest products to the same products.

However, according to the study of the present inventor, the changes in dimensions and shape during processing of the lead wire for a reed switch relay are mainly the dimensional changes a to f in FIG. 4 and the shape change in the 0 part. Therefore, even if the specifications such as the dimensions and shape of the reed switch change, the material supply of the work element, except for the changes in the dimensions a to f and the change in the shape of part 0,
It was found that the basic operations such as punching, bending, and welding remain unchanged.

Therefore, in the present invention, a series of processing is separated into each work element, a multi-tasking machine is formed by a collection of independent single work elements, and each work element can be mounted at any position on the common bed. possible.

By doing this, it becomes possible to easily respond to the changes a to g in FIG. 4 by moving the work element with respect to the set mold.

In order to be able to drive each work element without any problem even when it moves on the common bed, each work element is driven by an independent drive source.

Further, the drive source of each work element is electrically connected to one control device common to processing and transportation, and the operation of each work element fixed at an arbitrary position on the common bed is controlled by the control device. controlled. In addition, in order to make the multi-tasking machine match the target work and perform systematic operations such as simultaneous and continuous operation of each work element or a series of sequential operations,
Preferably, the drive source is a servo motor that can be controlled by a computer or the like.

(Example) As one practical BFi example of the present invention, processing of lead wires for a reed switch relay is taken up, and a plan view of the mechanical device is shown in the first example.
The front view is shown in FIG. 2, and the processed drawing is shown in FIG. 5, and the structure thereof will be explained below.

In FIG. 1, the bed upper surface 1a of the common bed 1 is sufficiently smooth so that each working element can be installed securely, firmly and quickly, and the upper surface of the bed 1 has a cross section of T.
A mold guide groove 1b is formed.

In Figs. 1 and 2, from right to left, the feeder 2 for intermittent feeding of strips with a variable feeding port, the press device 3 for punching pilot holes in the strips, and the lead l1fi
Press equipment for doweling [4] Welding lead wires to strips [5] Feeder for lead wires 6, Press device 7 for crushing lead wires, Press device 8 for cutting strips
Working elements such as the above are provided so as to be movable as desired along the guide groove 1b on the upper surface of the common bed 1 and fixed by known means.

Each working element such as the feeder 2.6, press device 3.4.7.8, welding device 5, etc. is equipped with an independent drive source as shown in FIG. As the drive source, it is preferable to use a servo motor as it is easy to perform feedback control, but for the drive source of work elements such as hole drilling where the timing of operation is not so important, it is recommended to use an induction motor instead of a servo motor. Good too. A controller of known type is connected to the drive source of each work element, and the controller is connected to a CPU such as a microcomputer via an axis selection interface.

The CPU is the control device of the present invention, and its settings can be easily changed.

Based on the input signal from the operation panel 16 (Fig. 2)
□A fixed pattern of pulses is generated from a pulse oscillator in response to a command from the CPU, and among the controllers, only the axis-selected controller receives the pulses, and the work elements connected to the controllers that have received the pulses operate. Additionally, signals from each work element are processed by the CPU to detect abnormalities.

The welding current to the electrode 5a of the welding device 5 flows from the welding controller under the command of the CPU.

In Fig. 5, from the right direction (arrow), the intermittent feed feeder 2 with a variable feed rate feeds the strip 9 that will become the carrier 15 (Fig. 4) to a fixed size, and the press M3 makes pilot holes in the strip 9. Punch out 9a.

Next, feeder 2 feeds the strip 9 at a constant rate, and press device 4
Dowel 9b for lead wire welding is taken out.

On the other hand, the lead wire 10 is fed from the feeder 6 from a direction perpendicular to the feeding direction of the strip material, and is merged with the strip material 9 to the welding device 5.
The lead wire 10 is welded to the strip 9 using the electrode 5a, and at the same time, the lead wire 10 is cut to a fixed size using a cutting device attached to the welding equipment W15. The above-mentioned operations are repeated one after another to weld the lead wires onto the carrier at predetermined pitches.

Next, the ends of the lead wires welded to the strips 9 are crushed using a press machine @7, and if necessary, the strips 9 are cut using a press machine 8 to complete the sub-assembly of the lead wires. Note that a winder may be installed at the rear end (left end in FIGS. 1 and 2) of the processing machine of the present invention to wind up the carrier together.

When carrying out the present invention, a forming machine that performs bending in multiple directions, which is conventionally known as a multi-forming machine, multi-slide, punching and forming machine, etc., may be employed as a working element. This is effective when performing complicated bending work such as for lead wires. The molding machine may be installed instead of the press device 7. Further, a forming machine may be provided between the welding device M5 and the press device 7. Furthermore, a forming machine equipped with a welding device may be used instead of the welding device.

Even if the specifications such as the dimensions and shape of the workpiece change, the basic operations of the work elements such as material feeding, punching, bending, welding, etc. do not change as described above, and the feeder of the present invention 2.6
, press device 3.4.7.8, welding device 5, etc. are arranged in one common bed 1 common to the processing machine and are configured to be movable and fixed at will, as shown in Fig. 4. If the dimensions of a to f shown or the shape of part 9 change, feeder 2.6, press device 3.4.7.8, welding device 5
This can be handled by arbitrarily moving and fixing each work element such as along the common bed 1. And the feeder 2.6 of the present invention, the press device 3.4.7.8,
Each work element such as the welding device 5 is equipped with an independent drive source, and the drive source of each work element is electrically connected to one control device common to the processing machine, so the feeder 2.6
, press device 3.4.7.8, welding 'vRw15, etc., even if each work element is arbitrarily moved along the common bed 1, the operations of each work element can be correlated with each other. In addition, since the drive sources are independent of each other, unnecessary work elements can be stopped or removed, and work elements can be added as appropriate when machining more complex workpieces. Processing system can be selected arbitrarily.

〔Effect of the invention〕

The present invention uses working elements that are movably installed on a common bed and are electrically coupled to each other, so it can easily accommodate changes in the shape and dimensions of the workpiece, and when producing workpieces in small quantities. The operating rate is also high and the efficiency of capital investment is high.

The present invention has a high degree of mechanical freedom, allows for easy detailed specification changes according to product specifications, is compatible with many types of workpieces, and does not require complicated molds, allowing selection of the optimal system. This makes the product more reliable and leads to lower costs.

Unlike conventional dedicated machines, the present invention does not require dedicated molds for each workpiece, so even if the number of products increases, the number of molds does not increase accordingly, and the cost of preparing molds in advance can be reduced. This simplifies the management of molds without having to update, and also shortens setup change time when changing workpieces.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a schematic front view of a reed switch produced according to the present invention, and FIG. 4 is a reed switch produced by a conventional method. Figure 5 is a plan view explaining the manufacturing method of the lead wire for
Diagram showing the operation of the embodiment shown in FIG.
The figure is a control system block diagram of the present invention. 1...Common bed, 2.6...Feeder,
3.4.7.8...Press device, 5...Welding device.

Claims (1)

[Claims] 1. In a processing machine that combines multiple work elements, each work element is equipped with an independent drive source, and each work element can be moved and fixed at will along one common bed common to the processing machine. The driving source of each of the work elements is electrically connected to one control device common to the processing machine, and the operation of each of the work elements fixed at any position on the common bed is controlled. A multi-tasking machine with a variable processing system, characterized in that the processing system is controlled by the control device.