JP2838657B2 - Press die processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for processing a press die in which a specific portion of a die is formed of a material different from that of the die body.

[0002]

2. Description of the Related Art Conventionally, as a press die, for example, a trim die having a blade portion for cutting a blank, a blade member formed of a material having a hardness higher than that of a die body is known. When manufacturing the trim mold, profile processing is performed on the trim mold material, and an edge portion of the mold material corresponding to the trim blade portion is chamfered and cut to form a cutout portion. The material for forming the blade is overlaid by arc welding or the like,
The overlaid portion is processed into a predetermined shape to form a blade portion. In this case, it is a general practice to transfer the mold material from the processing machine to the welding machine after forming the underfilled portion to perform the overlaying work, and then return the mold material to the processing machine again to process the overlaying portion.

[0003]

In the above-described method, it takes time and effort to transfer the mold material between the processing machine and the welding machine.
There was a problem that production efficiency decreased. In view of the above, an object of the present invention is to provide a press die processing method with high production efficiency that does not require transfer of a die material.

[0004]

In order to achieve the above object,
The present invention is a method for processing a press die in which a specific portion of a die is formed of a material different from that of the die main body, wherein a press die material is set on a table of the processing machine, and a processing head of the processing machine is provided. While performing profile processing on the mold material by the attached processing tool, a step of cutting a portion corresponding to the specific portion of the mold material to form a notched portion, and replacing a tool for overlaying on the processing head, It is characterized by comprising a step of overlaying the material on the underfilled section and a step of replacing a processing tool with a processing head to finish processing the overlay on a predetermined shape.

[0005]

[Function] By replacing the tool for the overlay on the processing head and overlaying on the underfill, all operations including the overlay can be performed while the mold material is set on the table of the processing machine. It is not necessary to transfer the mold material.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, reference numeral 1 denotes a bed of a processing machine, which has a front-rear direction as an X-axis direction, a left-right direction as a Y-axis direction, and a vertical direction as a Z-axis direction. Table 2 movable in the X-axis direction via screws 2b
And a movable frame 4 movable in the Z-axis direction by a motor 4a via a ball screw 4b on a gate-shaped frame 3 arranged so as to straddle the bed 1, and a ball screw is mounted on the movable frame 4 by a motor 5a. A processing head 5 that is movable in the Y-axis direction is mounted on the processing head 5 via the base 5b, and the processing head 5 can be moved relative to the table 2 in three X, Y, and Z directions.
An axis NC processing machine was configured. Then, a press die, for example, a trim type die material W for a side panel of an automobile is set on the table 2, and profile processing, overlaying and finishing of the overlay are performed.

The machining head 5 is provided with a spindle 5d which is rotated and driven by a spindle motor 5c, and the machining tool 6 and the overlay 7 can be interchanged on the spindle 5d.

The overlaying tool 7 is supported by a stock table 8 attached to the end of the table 2. After the processing tool 6 is delivered to a tool changing device (not shown), the processing head 5 is moved to a position immediately above the stock table 8. By moving and lowering, the overlaying device 7 can be automatically mounted on the spindle 5d.

On the side of the bed 1, there is disposed a supply device 9 for a material necessary for the build-up such as a build-up material, cooling water, gas and the like and electric power. The conduit cable 11 was connected to the cladding device 7, and the material and the electric power were supplied to the cladding device 7 via the cable 11. In the present embodiment, a plasma spraying torch is used as the overlaying tool 7, and a hopper 12 for supplying a powder overlay is provided on the supply device 9, but an arc welding torch is used as the overlaying tool 7. In this case, a wire supply reel made of a build-up material is provided instead of the hopper 12.

A cable guide 13 is provided at an end of the table 2. The cable guide 13 includes a tension pulley 13d attached to a column 13a erected on the table 2 via a bracket 13b and urged by a spring 13c as shown in FIG. 2, and a vertical portion of the upper end of the column 13a via a bearing 13e. A guide pulley 13f is provided so as to be rotatable around the axis, and prevents the conduit cable 11 from hanging down and interfering with the mold material W or the like when the overlaying tool 7 is mounted on the processing head 5 and moved. ing.

At the time of machining the mold material W, first, a machining tool 6 is attached to the machining head 5 to perform profile machining on the mold material W, and then an edge portion of the mold material W serving as a trim-type blade is machined into the machining tool 6. As shown in FIG. 3A, the undercut portion Wa is formed.

Next, the overlaying tool 7 is replaced with the processing head 5, and a material suitable for the blade portion is overlaid on the underfilled portion Wa as shown in FIG. 3 (b). In this case, an arc welding torch may be used as the overlaying device 7, but in the arc welding, the overlaying material is overlaid in multiple layers in the form of beats, which tends to cause blow holes and cracks. The use of a plasma spraying torch as described above is advantageous because a build-up material can be built up substantially in a single layer by plasma spraying, and a high-quality build-up portion free from defects such as cracks can be obtained.

After the build-up, the machining tool 5 is again attached to the machining head 5.
, And the overlaid portion Wb is formed by the machining tool 6 in FIG.
As shown in (c), finish processing to a predetermined blade shape.

The above-mentioned machining tool 6 is not limited to one kind, and a tool suitable for profile machining, cutting of the underfilled portion Wa, and finishing of the overlaid portion Wb may be replaced by a tool changer. It can be used properly. Further, in the above-described embodiment, the embodiment in which the trim-type blade portion is formed of the build-up material has been described. However, in the other press molds such as the draw type, the high-pressure portion that strongly acts on the forming load is formed of the high-hardness build-up material. The present invention can be similarly applied to the case of forming.

[0015]

As is apparent from the above description, according to the present invention, all operations including overlaying can be performed while the mold material is set on the table of the processing machine. Is unnecessary, and the production efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an example of a processing machine used for carrying out the present invention.

FIG. 2 is a side view of a main part of a cable guide provided in a processing machine.

FIGS. 3A, 3B, and 3C are diagrams showing a processing procedure of a mold material. FIGS.

[Explanation of symbols]

 Reference Signs List 5 processing head 6 processing tool 7 overlaying tool W-shaped material Wa underfilled section Wb overlaying section

Claims (1)

(57) [Claims] 1. A method of processing a press die in which a specific portion of a die is formed of a material different from that of a die body, wherein a press die material is set on a table of a processing machine.
Performing profile processing on the mold material with a processing tool attached to the processing head of the processing machine, and cutting a portion corresponding to the specific portion of the mold material to form a notched portion; A step of replacing the tool of the above, and overlaying the material on the underfill, and a step of replacing a processing tool on the processing head, and finishing the overlay to a predetermined shape. Press die processing method.