JPH0441207A - drilling machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention is applicable to thin plate-shaped parts, such as films, unsintered ceramics, and other soft parts that are difficult to hold. This relates to a drilling machine that drills holes after fixing parts.

BACKGROUND OF THE INVENTION In recent years, techniques for making holes in ceramics before sintering are required to be smaller and more precise.Hereinafter, an example of a conventional technique for making holes in ceramics will be described with reference to the drawings.

FIG. 6 shows a cross-sectional view of the structure and operation of a conventional drilling machine. The lower mold 2 is fixed to a lower mold holder 3 so as to be centered with the upper mold 1. The ceramic sheet 5 is fixed to the frame 4. Here, y is the moving distance of the upper mold 1.

The operation of the drilling machine configured as described above will be explained below.

First, in FIG. 6, the upper mold 1 and the lower mold 2 have a distance y1 at which they do not come into contact with each other when the ceramic sheet 5 fixed to the frame 4 moves from the right side in the direction of the arrow as shown by the one-point imaginary line. In other words, the moving distance of the upper die is maintained.

When the frame 4 and the ceramic sheet 5 move to a predetermined position, they descend in the direction of the solid arrow and are held at a position where the upper surface of the lower mold 2 and the lower surface of the ceramic sheet 5 abut. Next, the upper mold 1 descends by a moving distance y to make a hole in the ceramic sheet 5. At this time, the scraps of the ceramic sheet 5 are discharged from the lower hole, but are sucked and discharged in the direction of the bold line arrow. Fig. 7 is the same as Fig. 6 except that the ceramic sheet 5 is fixed to the lower surface of the frame 4, but by bringing the gap between the lower mold 2 and the ceramic sheet 5 as close as possible, the ceramic sheet 5 can be moved up and down. There will be no need. Figure 8 is a cross-sectional view of the lower mold 2, and the punched hole 6 requires a dimension t, but if the diameter of the hole is 0.3 mm or less, it is extremely difficult to increase t, which is 2 to 3 times the diameter. It is said that it is sufficient to have the dimensions of Here, FIG. 9 is a plan view and a sectional view showing a state in which the ceramic sheet 17 is fixed to the frame 16.

Problems to be Solved by the Invention However, in the above structure, the frame 4 and the ceramic sheet 5 need to be moved laterally and vertically before drilling is performed. Furthermore, the distance y until the upper die comes into contact with the lower die 2 also increases, and the time required for drilling becomes longer. Furthermore, in the method of fixing the ceramic sheet 5 to the lower surface of the frame 4, the fixation must be performed reliably to prevent it from falling off. Alternatively, it is also necessary to prevent parts from peeling off and hanging down. The lower mold 2 is
Even if it is polished and used as necessary, there is a problem in that it is expensive to make a structure like the one shown in the figure.

Means for Solving the Problems In order to solve the above problems, the drilling machine of the present invention has a structure in which the lower die is movable up and down, and the cutting die part of the lower die has a separate structure and is fixed by suction or It is equipped with a magnetic structure.

Effect of the present invention With the above-described structure, the distance between the upper mold and the lower mold can be reduced by eliminating the vertical movement of the ceramic sheet, and the moving distance of the upper mold can be shortened, and maintenance and inspection of the mold can be facilitated, making work easier. This reduces man-hours and contributes to cost reduction.

Embodiment Hereinafter, a drilling machine according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows the vertical movement of the lower mold of a drilling machine in a first embodiment of the present invention. In the same figure, the upper mold 7
is fixed in alignment with the center of the lower mold 8, and the lower mold holder 9
is provided with a hole large enough to fit the lower mold 8 and allow it to be moved up and down.
A lower mold 8 is inserted into the hole so that the dimensions can be raised or lowered as required. FIG. 2 shows a state in which the lower mold 8 is lowered and the ceramic sheet 11 fixed to the frame 10 is moved in the direction of the arrow.

FIG. 3 shows a state in which the lower die 8 is raised and a hole can be drilled. The lower mold 8 is placed in the hole of the lower mold receiver 9 at a distance Y from the upper mold 7.
The ceramic sheet 11, which is fixed to the frame 10, is positioned in between. FIG. 4 shows the cutting die 13 attached and fixed to the lower die 8,
FIG. 3 is a cross-sectional view showing that a dregs punching hole and a punching hole 14 are provided in the lower die 8. FIG. FIG. 5 is a cross-sectional view of the cutting die 13 attached and fixed to the lower die 8 using the magnet 15. The magnet 15 contacts the lower die 8 and at the same time also attracts the cutting die 13,
The lower die 8 and the cutting die 13 are integrated.

The operation of the drilling machine constructed as described above will be explained below with reference to FIGS. 1, 2, 3, 4, and 5.

In FIG. 1, the lower mold 8 is placed in the lower mold receiver 9 in the arrow direction (up and down).
It can be installed smoothly and without rattling and can be moved by a dimension of X. A structure for raising and lowering the lower mold 8 is not shown.

When drilling holes, the lower mold 8 in FIG. 2 is in a lowered state,
The ceramic sheet 11 fixed to the frame 10 passes over the lower mold and moves to a predetermined position. When the movement is finished, as shown in FIG.
It will rise to a position where it almost touches the bottom surface of the , and will be fixed. Next, the upper mold 7 is lowered to a position where it touches or slightly enters the punched hole 14 of the lower mold 8, thereby punching a hole in the ceramic sheet 11.

In this case, it goes without saying that the diameter of the punched hole 14 is larger than the diameter of the upper die 7. The scraps are discharged through the scrap removal hole 12.

With the structure and operation described above, the ceramic sheet 11 fixed to the frame 10 is attached to the upper mold 7.
It is only necessary to set the dimension Y to be the minimum dimension that does not cause contact, and it is obvious at a glance that y>Y, compared to the conventional case. When the prescribed hole drilling is completed, the frame 10.
Ceramic sheet 11 is taken out.

As described above, the lower mold 8 is made vertically movable, and when the frame 10 and the ceramic sheet 11 pass over the lower mold 8 before and after the drilling operation, the lower mold 8 is made to be on the same level as the upper surface of the lower mold receiver 9. By setting the upper mold 7 and lower mold 8 to be less than that,
The distance between the holes can be reduced, and the moving distance of the upper mold 7 during drilling can be shortened, thereby improving the efficiency of the drilling work. Moreover, since the ceramic sheet 11 is fixed to the upper side of the frame 16 with this method, it is sufficient to fix the ceramic sheet 11 to the extent that it does not shift laterally, and a relatively simple fixation is sufficient. Next, the structure of the lower mold 8 will be explained.

FIG. 4 shows a method of using suction force to fix the cutting die 13. Cut out the area around the hole in the lower mold 8 to the specified dimensions,
A cutting die 13 having a punching hole 14 is removably attached to the part, and is finished and installed to a size without rattling. The thickness t of the punching die 13 at this time may be approximately the same as the thickness of the conventional punching hole portion.

The dregs removal hole 12 only needs to be larger than the removal hole 14.

Next, when the ceramic sheet 11 is punched with the upper die and the lower die, the scraps of the ceramic sheet 11 that are generated are discharged through the scrap punch hole 12, but at this time, it is more effective to suck them in the direction of the arrow. At the same time, the cutting die 13 is also suctioned, and the lower die 8 and the cutting die 13 can be fixed more reliably. At this time, the material of the cutting die 13 is not particularly limited. FIG. 5 shows a method of fixing the cutting die 13 using a magnet. A hole of a predetermined size is provided in the lower mold 8, and a magnet 15 is fitted and fixed into the hole. If the same cutting die as explained in FIG. 4 is attached thereon, the cutting die 13 will be fixed to the lower die 7 by magnetic force.

At this time, the material of the cutting die 13 must be magnetic.

Effects of the Invention As described above, the present invention has a structure in which the lower die can be moved up and down, thereby reducing the distance between the upper die and the lower die, shortening the moving distance of the upper die, and improving the work efficiency of drilling. By creating a structure in which the cutting die can be attached and detached from the lower die, the shape is simple, it can be produced at low cost if made in large quantities, and even if a large part of the cutting die is damaged, maintenance can be done by simply replacing it. The trouble of having to remove the cutting die, repair it, and then reinstall it can be greatly reduced, and maintenance work efficiency can also be improved. Furthermore, when the ceramic sheet is fixed to the bottom of the frame, it must be securely fixed to prevent the ceramic sheet from sagging. However, in the present invention, the ceramic sheet is fixed on the frame, so there is no fear of the ceramic sheet hanging from the frame. It suffices to fix it to the extent that it does not come off, and the fixing method can be simplified.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a drilling machine in an embodiment of the present invention;
Figures 2 and 3 are cross-sectional views showing the operating state of the drilling machine shown in Figure 1, Figures 4 and 5 are cross-sectional views showing the relationship between the lower mold and the cutting die, and Figures 6 and 7 are FIG. 8 is a sectional view of the lower die of the conventional drilling machine, and FIG. 9(a) and ibl are a plan view and a sectional view of a ceramic sheet fixed to a frame. 7...Top mold, 8...Bottom mold, 9...
・・Lower mold holder, ] 0 ・・・・ Frame, 11 ・・・・・
Ceramic sheet, 12... Drag removal hole, 13...
... Cutting die, 14... Punching hole, 15...
··magnet. Name of agent: Patent attorney Shigetaka Awano

Claims (3)

[Claims] (1) A drilling machine uses an upper die and a lower die to make holes in a ceramic sheet attached to a frame.The structure of the machine is such that the lower die can move up and down, and the parts to be drilled are placed in the specified position. When the work is completed, the lower mold moves up and the upper mold lowers to drill the specified hole.When the work is completed, the lower mold moves down and returns to its original position, allowing the part to be taken out. Features of this drilling machine. (2) To make the cutting die part of the lower mold detachable and fix it,
2. The drilling machine according to claim 1, having a structure that utilizes a suction force used when discharging the punched dregs. (3) To make the cutting die part of the lower mold detachable and fix it,
2. The drilling machine according to claim 1, wherein the drilling machine uses a magnet attached to the lower die and a suction force for ejecting the punched dregs.