Abrading – Abrading process – With critical temperature modification or control of work or...
Reexamination Certificate
1999-01-05
2001-01-30
Butler, Rodney A. (Department: 3725)
Abrading
Abrading process
With critical temperature modification or control of work or...
C451S449000, C451S450000
Reexamination Certificate
active
06179692
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a work machining method such as machine cutting and grinding.
2. Description of the Prior Art
In machine cutting or grinding with a machine tool, it is a conventional practice to supply or feed coolant to a position where the machine tool makes contact with a workpiece. A coolant feeder for this purpose is proposed as TOKKAIHEI (Japanese Provisional Publication) No.
8-197311
, the coolant feeder being used for a multispindle automatic lathe. In the disclosed coolant feeder, coolant passages
52
a
,
53
a
, which are connected, are made in an x-axis slide
52
and a tool rest
53
, respectively, of a cross slide
51
for holding a cutting tool
50
, as shown in FIG.
21
. In addition, one end opening of the coolant passage
52
a
of the x-axis slide
52
is connected via a distribution passage
54
(which is made of a tube or the like so as to be able to follow the tool rest
53
) with a coolant supplier (not shown) while one end opening of the coolant passage
53
a
of the tool rest
53
is provided with a coolant supply pipe
55
. In machining a workpiece
56
, a coolant is fed through the distribution passage
54
and the coolant passages
52
a
,
53
a
, into the coolant supply pipe
55
, and is ejected to a contacting point between the cutting tool
50
and the workpiece
56
from the tip at the open end of the coolant supply pipe
55
. Further, this apparatus is designed in such a manner that a coolant is supplied to a tool on a tool slide (not shown). In the figure,
57
is a spindle carrier and
58
is a main axis.
However, in the above coolant feeder, only one kind of coolant is supplied to the contacting point between the cutting tool
50
and the workpiece
56
from one direction, which results in an insufficient cooling effect and insufficient lubricity. For this reason, there are problems of insufficient durability of the cutting tool
50
and poor finishing accuracy of the machined surface on the workpiece
56
. Further, there is another problem from an environmental viewpoint in the case of using liquids like cooling water or oil cutting fluid as a coolant, because there is a necessity for the disposal of waste liquids.
Accordingly, it is an object of the present invention to provide a work machining method whereby the durability of a machining tool and the finishing accuracy of a machined surface on a work are superior and no environmental problem is caused.
SUMMARY OF THE INVENTION
To accomplish the above object, a work machining method according to the present invention includes providing two ejection devices for each ejecting a mist of liquid mounted on a machining apparatus, whereby different mists of liquids are ejected to a machining point from each of the ejection devices, respectively, in the work machining method.
According to the work machining method of the present invention, different mists of liquids are ejected from two ejection devices mounted on the machining apparatus to a machining point. For this reason, one mist of a liquid superior in cooling effect is ejected from one of the ejection devices, while the other mist of a liquid superior in lubricity is ejected from the other ejection device, whereby sufficient cooling effect as well as sufficient lubricity can be obtained for a machining tool and a workpiece, resulting in an improvement in durability of the machining tool as well as an improvement in the finishing accuracy of the machined surface. Further, since a mist of the two liquids are ejected from the ejection devices, there is no necessity of disposal of waste liquid, resulting in no environmental problems. In the present invention, the phrase “a face side of a machining tool” means not only a face side of a machining tool and its adjacent portion, but also cuttings of a workpiece, or all together of the face side, its adjacent portion and cutting. In addition, in the present invention, the phrase “a flank side of a machining tool” means not only a flank side of a machining tool and its adjacent portion, but also a machined surface of a workpiece, or all together of the flank side, its adjacent portion and the machined surface of a workpiece.
In the present invention, if the machining apparatus includes a turret, the turret can effectively be utilized.
In the present invention, in the case that a mist of cooling water is ejected from one of the ejection devices to a face side of a machining tool, while a mist of oil liquid is from the other ejection device to a flank side of a machining tool, sufficient cooling effect on the face side can be obtained by the mist of cooling water and also sufficient lubricity on the flank side can be obtained by the mist of oil liquid, resulting in improvement in durability of the machining tool as well as an improvement in the finishing accuracy of the machined surface.
REFERENCES:
patent: 5524465 (1996-06-01), Kajiwara et al.
patent: 5678466 (1997-10-01), Wahl
patent: 8-197311 (1996-08-01), None
Armstrong, Westerman Hattori, McLeland & Naughton
Butler Rodney A.
Ecoreg Ltd.
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