JPH0314247Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a chip removal device particularly used in drilling a pilot hole that does not penetrate, such as drilling a tap pilot hole with a drill.

For example, when drilling a pilot hole with a drill in a drilling machine or a vertical machining center, chips 1 generally swell up and accumulate on the opening edge of the hole 2, as shown in FIG. For this reason, when the drill 3 is pulled out after drilling is completed, the accumulated chips 1 crumble and fall into the hole 2, making it difficult to tap in the next step. 1' prevents the tap from entering, making it impossible to tap deep into the tap.

Therefore, in the past, the chips 1 accumulated on the opening edge of the hole 2 were sucked up with a dust vacuum device as disclosed in Japanese Utility Model Application No. 56-52654, or blown away with pressure air as another example. Otherwise, the chips 1' that have fallen into the hole 2 after the drill has been removed are manually adsorbed and removed using a magnetic rod. However, sucking up the chips with a dust suction machine or blowing them away with a compressor requires equipment and equipment costs, and the chips inside the hole cannot be completely removed.
Furthermore, removing chips inside the hole using a magnetic rod was inefficient and difficult to automate.

In view of the above-mentioned circumstances, the present invention aims to provide a chip removal device that can remove chips around a hole during drilling to improve workability in the next process, and can be unmanned. .

Therefore, in order to achieve the above object, the removing device according to the present invention is attached to a drilling tool for drilling a hole in a workpiece, and is detachably attached to the drilling tool. a holding member mounted so that its mounting position can be adjusted along the tool axis; and a holding member having a surface extending outward from an outer diameter portion of the drilling tool and substantially parallel to the tool axis of the drilling tool;
One end is close to the outer diameter part of this drilling tool, and the lower end is in contact with the surface of the workpiece over the entire width when drilling is completed, and chips are directed outward as the drilling tool rotates. It is constituted by an exclusion plate attached to the holding member so as to be excluded.

Embodiments of the present invention will be described in detail below with reference to the drawings.

In FIG. 2, 11 is a drill which is a drilling tool, and 12 is a removal plate. The drill 11 is a holding part 1 of a drill machine or a vertical machining center.
3 and rotates. Drill 11
An exclusion plate 12 is attached to the middle part of the holder, and the exclusion plate 12 is detachably attached via a retaining ring 14 which is a retaining member. As shown in FIG. 3, the retaining ring 14 has an inner hole 15 having a diameter slightly larger than the diameter of the drill 11, and is fixed to a predetermined position of the drill 11 by screwing after inserting the drill 11. The retaining ring 14 is fixed at a position such that the lower end of the exclusion plate 12 is at the standard pilot hole depth h of the drill 11.

The exclusion plate 12 is, for example, a rectangular plate made of an elastic material such as rubber, and is fixed with a screw 16 after being inserted into a notch in the retaining ring 14 . The exclusion plate 12
is vertically elongated so that one longitudinal side is close to the axial outer circumference of the drill 11, and is slightly eccentric in the rotational direction (arrow direction in the figure) with respect to the vertical plane l passing through the axis of the drill 11, and the vertical plane It is parallel to l and extends outward. Furthermore, the lower end of the exclusion plate 12 is installed so as to be in contact with the surface of the workpiece 17 when the drilling operation is completed.

In the rejecting device configured as described above, the approximate position of the rejecting plate 12 is determined by the movement of the retaining ring 14, and the rejecting plate 12 is also moved to a desired position by minute movements relative to the retaining ring 14. Can be set to After setting the exclusion plate 12, when the workpiece 17 is machined with the drill 11, chips are pushed up onto the surface of the workpiece 17. The chips 18 are swept outward by the lower end of the removal plate 12, which rotates together with the drill 11, as shown in FIG.

In the above embodiment, the exclusion plate 12 which is detachably attached to the retaining ring 14 has the advantage that it can be replaced when worn or damaged. Further, in the above embodiment, the removal plate 12 is eccentric and provided parallel to the vertical plane l, but chips can be removed by making it semicircular at an angle, even if it is not eccentric with respect to the vertical plane l. . In addition, chips can also be removed by making it eccentric with respect to the vertical plane l and forming an angle, or by making it semicircular or dogleg-shaped.

As is clear from the above explanation, according to the present invention, there is no need to manually remove the chips inside the hole using a magnetic rod, etc., and even after machining, the chips do not accumulate inside the hole and are transferred to the outside of the hole. Since it is discharged into
There is no need to scrape out chips inside the hole.

In addition, although it is expensive, if necessary, you can use a conventional post-processing dust remover, wind pressure machine, etc. to eliminate the dust.
Chips deposited on the workpiece can be completely removed, including chips inside the hole.

Therefore, by applying the device of the present invention, it is possible to automatically and continuously perform the tapping operation after the drilling process, and especially when this is applied to a dedicated machine or a vertical machining center, Unmanned continuous operation, including tapping work, is now possible in a more stable manner than before.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional hole drilling state, Fig. 2 is a perspective view of a chip removal device showing an embodiment of the present invention, Fig. 3 is a partially cutaway view of the mounting structure of the removal plate, and Fig. 4
The figure is a cross-sectional view of the hole being drilled with the exclusion plate attached. DESCRIPTION OF SYMBOLS 11...Drill serving as a drilling tool, 12...Exclusion plate, 13...Holding portion, 14...Holding ring serving as a holding member, 17...Workpiece, l...Vertical surface.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A device that is attached to a drilling tool for drilling a hole in a workpiece, and that is detachably attached to the drilling tool and at a mounting position along the tool axis of the drilling tool. a holding member that is adjustably mounted; and a holding member having a surface extending outwardly from the outer diameter of the drilling tool and substantially parallel to the tool axis of the drilling tool, one end of which extends outwardly from the outer diameter of the drilling tool; The holding member is arranged so that the lower end thereof is close to the diameter portion and contacts the surface of the workpiece over the entire width when the drilling process is completed, and so that chips are removed outwardly as the drilling tool rotates. A chip removal device consisting of a removal plate attached to the 2. The chip removal device according to claim 1, wherein the removal plate is made of an elastic material.