Gear cutting – milling – or planing – Milling – With means to remove chip
Patent
1996-06-27
1998-08-11
Briggs, William R.
Gear cutting, milling, or planing
Milling
With means to remove chip
408 61, B23C 900, B23Q 1100
Patent
active
057918422
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a chip suction and disposal device for a machine tool having an automatic tool exchanging structure, wherein chips produced from a cutting tool such as a drill can be continuously attracted and removed during processing a work with the tool.
BACKGROUND OF THE INVENTION
For a machine tool having a rotatable shaving tool or boring cutter, there has been a chip attracting device for immediately and continuously attracting and removing chips produced during processing a work by means of air stream (see Japanese Utility Model Provisional Publication No. 104915 of 1990).
This chip attracting device can prevent the working environment from being aggravated by scattered chips, save a person's trouble of cleaning chips, as well as prevent precision of a work from being degraded by distortions of a work due to the heat of the chips.
A machine tool having an automatic tool exchaning structure also requires that chips produced during processing a work with a cutting tool such as a drill, reamer, or tap should be removed without a person's trouble.
A cutting tool such as a drill, however, produces chips at a relatively deep position of a work. Therefore, the conventional chip attracting device can hardly meet the above requirement. It is especially true for a work made of aluminum.
Therefore, objects of the present invention are to overcome the above problem, and to provide a chip suction and disposal device for a machine tool, wherein chips produced from a cutting tool such as a drill can be immediately and continuously removed by means of air stream without losing a function for exchaning a cutting tool.
SUMMARY OF THE INVENTION
This invention is characterized by a chip suction and disposal device for a machine tool having an automatic tool exchanging structure, wherein a cutting tool subassembly (U) is fit to and removed from a spindle; wherein a hooding means (13) is provided to form an air-tight space around a cutting tool mounted on the tip end of a cutting tool mounting member (7); wherein cylindrincal members (16, 19), parts of the hooding member, are retreatable and slidable relative to a work against spring (18) force toward the tip end of the cutting tool; wherein an opening is provided on the tip end face of the cylindrical members, said tip end to be in touch with the work; wherein air ducts (s1, s2) are provided to suck the air inside the hooding means; wherein an air hole (11a) is provided in a shaft of the cutting tool; wherein one end of the air hole is open to the tip end of the cutting tool, while the other end is connected to passages (p1, p2), said passages being open to the atomospheric area at the cutting tool mounting member (7); wherein a connecting opening for said air ducts (s1, s2) is provided on the end face of the hooding means on its spindle side; wherein an engaging means (26) is provided to regulate rotations of the cutting tool mounting member (7) to a fixed position; wherein said engaging means (26) is provided to protrude by means of a bar member (28) which is engaged with the spindle supporting member (1) in a same body; wherein rotating regulation of the cutting tool mounting member (7) is released by pushing movement of the bar member (28) against spring (27) force; and wherein an air suction pipe (15) is provided near the spindle supporting member (1) so as to closely connect the end face of a connecting opening of said air suction pipe (15) with the end face of the above connecting opening of the air ducts (s1, s2).
According to this invention, the cutting tool subassembly is suitably held and moved by a cutting tool exchanging arm of an automatic cutting tool exchanging machine so as to be mounted to or removed from the spindle.
When mounting the cutting tool subassembly, the cutting tool mounting member is properly moved to a fixed position on the spindle because of interaction between the engaging means and orientation function of the spindle. While the cutting tool subassembly is mounted, the bar member is engage
REFERENCES:
patent: 4563115 (1986-01-01), Abe et al.
patent: 5090849 (1992-02-01), Arai et al.
Briggs William R.
Horkos Corp.
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