JPH0718514Y2 - Telescopic cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial field of application The present invention relates to a protective cover for a sliding surface of a bed in which a column moves on a bed in a horizontal machining center or the like.

2. Description of the Related Art In machine tools, most sliding surfaces are protected from chips by a cover. The protective cover has a unique shape design depending on the type of machine, the shape of the sliding surface, and the state of cutting chips, and there are many telescoping types where there are moving parts.

Problems to be Solved by the Invention A telescopic cover has a plurality of cover plates whose widths are gradually narrowed. When the telescopic cover is extended, it is pulled out from the upper cover plate of a small width along with the moving body so that the sliding surfaces are not exposed by being linked with each other. Although covered, it is often necessary to provide side covers on both sides of the telescopic cover to prevent chips and the like from scattering. In this case, the side cover will be installed to the maximum width of the telescopic cover plate, and in the place where the width of the cover plate becomes narrower, there will be a gap that is not covered with the side cover, and chips and cuttings will be made from this gap. There was a problem that the liquid entered and the sufficient liquid-proof and dust-proof effects were not obtained.

The present invention has been made in view of the above problems of the prior art, and aims to provide a telescopic cover having a satisfactory liquid-proof effect by treating chips and cutting fluid that enter the gap. It is what

In a telescopic cover that protects the sliding surface, the gutter has a maximum width that is approximately equal to the length when the cover is extended and that has a width that can close the gap between the side covers on both sides of the minimum width cover plate. The cover plate is attached to both outer sides of the cover plate so as to close the gap from the side cover from below.

Action The gaps created on both sides of the cover plate with a narrow width due to the extension of the telescopic cover are closed below by the gutter member attached to the cover plate with the maximum width, and chips and cutting fluid are received by the gutter and discharged.

Embodiment An explanation will be given below based on FIG. 1 and FIG.

On the sliding surface of the bed 3 of the well-known horizontal machining center,
A column 1 which supports a tool-mounted main shaft 2 so as to be vertically movable and rotatable is mounted so as to be slidable in the front-rear direction. In addition, a telescopic cover 5 that protects the sliding surface of the bed from chips and cutting fluid generated by machining the workpiece on the table 4.
Is provided between the front end of the sliding surface of the bed 3 and the column 1,
Side covers (not shown) are also installed on the left and right side surfaces of the telescopic cover so that chips will not be blown to the accessory devices. Brackets 11 are fixedly installed outside the left and right front ends of the column sliding surface of the bed 3, respectively.
The mounting block 14 of the guide rod 13 is pivotally supported by 12 and the guide rod 13 can be swung in a vertical plane with the tip free. Support collars 15a, 15b, 15c, 15d in which two guide rods 13 on the left and right sides are made of DU metal on the sliding surface and rubber bushes are fitted as stoppers.
Are sequentially slid on the tip side. And support collar 15a,
15b, 15c have locking plates 16a, 16b, 16c whose tip side is gradually higher
Is attached at a right angle to the two guide rods 13, and a support collar 15d is provided with a mounting angle 16d of the uppermost telescopic cover described later. In this example, there are four telescopic covers 5, and the lowermost cover plate 17a has its lower end face fixed to the upper faces of the left and right mounting blocks 14 and its upper end at a position where the tip of the locking plate 16a of the support collar 15a projects. Installed. The second cover plate 17b is placed on the cover plate 17a with a rubber plate or felt attached to the entire width of the lower surface of the lower end portion, and the upper end is a position where the tip of the locking plate 16b of the support collar 15b projects. Installed on. Third cover plate 17
Similarly, for c, a rubber plate or felt is attached to the entire width of the lower end surface and is placed on the second cover plate 17b, and the upper end is attached to a position where the tip of the locking plate 16c of the support collar 15c projects. Has been. The uppermost cover plate 17d is placed on the third cover plate 17c by attaching a rubber plate to the entire width of the lower end surface, and the upper end is attached to the angle 16d of the support collar 15d.
Blocks 18 are attached to the lower surfaces near the upper ends on the left and right sides of the cover plate 17d, and brackets are attached to the left and right sides of the height at which the cover inclines at the lower front portion of the column 1.
It is pivoted at pin 20 to 19. Further, key-shaped rising portions are formed on the left and right sides of the respective cover plates 17a, 17b, 17c, 17d of the telescopic cover 5, and the rising of the bottom telescopic cover plate 17a is the outer side of the rising parts 17b, 17c, 17d.
Are formed so that the rising edges of the are sequentially inward.

Further, on the outside of both key-shaped rising parts of the cover 17a of the maximum width which becomes the outer side when laminated, the length is almost equal to the length when the cover is extended, and it covers the both lower sides of the cover plate 17d of the minimum width. A gutter 21a having a width and closing the gap between the side cover and the cover plates 17b, 17c, 17d of the telescopic cover from below.
To form The shaped plate 21 having a V-shaped cross section is placed on the ceiling key portion 21b and fixed by screws. The cross-sectional shape of the shaped plate 21 is Can also be

Reference numeral 22 denotes a chip conveyer which is provided on the front side of the bed 3 at a right angle and is for discharging chips and cutting fluid. Furthermore, when side covers are established on both sides of the telescopic cover 5,
When the wiper 23 for rubbing the side cover is provided on the top of the shaped plate 21, the liquid prevention becomes more complete.

In the thus configured column 1, the column 1 is assumed to be at the most forward end position. Bracket 19 attached to column 1
As a result, the top cover plate 17d is pushed forward and rises, and the guide rod 13 is also erected via the support collar 15d. When the column 1 retracts, the cover plate 17d is pulled out by the bracket 19 3
The support collar 15d slides on the guide bar 13 while sliding on the cover plate 17c. Along with this, the guide rod 13 further tilts rearward about the support shaft 12. When the uppermost cover plate 17d is pulled out, a rubber plate (not shown) at the front end hooks the protruding portion of the locking plate 16c of the third support collar 15c from below and pulls out the third cover plate 17c. The guide rod 13 further tilts accordingly. In this way, the second cover plate 17b is sequentially pulled out. At the retracted end of the column 1, the third cover plate 17b abuts on the locking plate 16a of the support collar 15a of the lowermost cover plate 17a to cover the entire sliding surface. The gutter portion 21a of the shaped plate 21 is inclined along with the inclination of the telescopic cover 5 and the gutter portion 21a is inclined.
The gutter portion 21a closes the gap on both sides of the narrow cover plate from which the cover plate is pulled out by the movement from the lower side. The cutting chips and cutting fluid scattered in the gaps on both sides of the cover plate are received by the gutter portion 21a, flowed by an inclination, and dropped onto the chip conveyor 22 on the front side.

Effects Since the present invention is configured as described above, the present invention has the following effects.

All the chips and cutting fluid scattered in the gaps on both sides due to the difference in the width of the cover plate of the telescopic cover can be received and discharged, and the liquid and dust prevention effect will be more reliable.

[Brief description of drawings]

FIG. 1 is a side view of the telescopic cover of the present invention, and FIG.
FIG. 3 is a view from the front end of the telescopic cover, and FIG. 3 is a view from the front end of the conventional telescopic cover. 1 …… Column, 3… Bed 5 …… Telescopic cover, 13 …… Guide bar 17a, 17b, 17c, 17d …… Cover plate 21 …… Shape plate, 21a …… Gutter 23 …… Wiper

Claims (1)

[Scope of utility model registration request] 1. In a telescopic cover for protecting a sliding surface, a gutter having a length substantially equal to a length when the cover is extended and having a width capable of closing a gap between side covers on both sides of a cover plate having a minimum width. The telescopic cover is attached to both outer sides of the cover plate having the maximum width so as to close the gap from the side cover from below.