JP3674352B2 - Portal machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a portal machine having a VV rolling guide on a cross rail.
[0002]
[Prior art]
A conventional portal machine will be described with reference to FIGS. 3 and 4. The portal machine 1 includes a portal column 4 that straddles a table 3 that moves a workpiece 2 and moves left and right (X direction) in the figure. is there. A cross rail 5 is attached to the column 4 in the Y direction (perpendicular to the drawing) of the upper portion of the table 3, and the cross rail 5 is attached to a saddle 6 moving in the Y direction in the vertical direction (Z A spindle head 7 provided with a tool moving in the direction) is attached. Conventionally, in order to guide the saddle 6 on the cross rail 5 in the Y direction, an endless track type roller guide in which linear guides 8 are arranged in the lateral direction as shown in FIG.
[0003]
[Problems to be solved by the invention]
However, the saddle that moves in the Y direction encounters "rollers" and the like that are not good in accuracy with the movement, and each time there is mechanical undulation or impact, which hinders precise machining.
[0004]
An object of the present invention is to eliminate the disadvantage that the saddle moving in the Y direction has mechanical undulations or impacts and hinders precise machining.
[0005]
[Means for Solving the Problems]
Cross rail having a saddle for the accomplishment of the foregoing the present invention is mounted a second spindle head to the other end surface attached to the first spindle head on one end face, the V-V rolling guide with fitting the saddle And the second spindle head is weight-balanced with the first spindle head via the saddle .
[0006]
Also these first spindle head and second spindle head is optimal if chromatic respectively different functions.
[0007]
According to this apparatus, the saddle fitted to the VV rolling guide acts as an appropriate preload for the VV rolling guide when the VV rolling guide is in a plane extending in the lateral direction. The function of rolling guidance can be sufficiently exerted, and therefore “swell” or the like does not occur for the saddle moving on the cross rail.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below. FIG. 1 shows a portal processing machine 10 using the present invention. The portal processing machine 10 is provided with a portal column 12 across a table 11 that moves in the X direction, and a cross rail 13 is attached to the portal column 12 in the upper Y direction of the table 11. This cross rail 13 is provided with a V-V rolling guide 14, which is guided by the V-V rolling guide 14 to attach a spindle head 16 which can be moved in the Z direction with a spindle 15 attached to one end face, and others. A saddle 18 with a balance weight 17 attached to the end face moves in the Y direction.
[0009]
Here, an example in which the spindle head 16 and the balance weight 17 are respectively attached to both end faces of the saddle 18 has been described, but in FIG. 2 of the embodiment of the present invention , a spindle head having a spindle having a different function on each end face, an example the horizontal axis spindle 19 as the first spindle head on one eg to have attached a vertical spindle shaft 20 as a second spindle head to the other.
[0010]
Since it is configured as described above, the saddle to which the spindle head is attached can move stably in the VV rolling guide.
[0011]
【The invention's effect】
The conventional cross rail saddle guide that was initially raised has an endless track shape, which eliminates the disadvantage that precision machining has been hindered, and a cross rail that does not cause “swell” or the like can be obtained.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a portal type processing machine using the present invention.
FIG. 2 is an explanatory view of a portal machine showing an embodiment of the present invention.
FIG. 3 is an explanatory diagram of a conventional portal machine.
4 is an explanatory view of a conventional portal machine, and is a cross-sectional view taken along line AA of FIG.
[Explanation of symbols]
10 Portal Machine 11 Table 12 Portal Column 13 Cross Rail 14 V-V Rolling Guide 15 Spindle 16 Spindle Head 17 Balance Weight 18 Saddle 19 Horizontal Spindle 20 Vertical Spindle Spindle

Claims (1)

A saddle mounted a second spindle head to the other end surface attached to the first spindle head on one end surface, the cross rail having a V-V rolling guide with fitting the saddle, the provided, the second spindle A portal-type processing machine characterized in that the head is weight-balanced with the first spindle head via the saddle .

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