JPH0493147A - Slide cover - Google Patents

Abstract

PURPOSE:To drop a chip, etc., with its induction forcibly to the side part of the obliquely rear part of a cover by an inclined front end edge, by angling an inclination at obliquely rear part in the extension direction of a cover element on the front end edge of the upper plate part of each cover element with the almost center part in the width direction as an apex. CONSTITUTION:An inclination theta is angled at the obliquely rear part to the extension direction of a cover element with the almost center part in the width direction as an apex 21 on the front end edge 20 of the upper plates 8 of each cover element 6a-6c. At the advance time of each cover elements 6a-6c, the chip, etc., gathered on the cover upper face are straddled to the front end edge 20 inclined to the right and left obliquely rear part with the apex 21 of the almost center part in the width direction of the front end edge of an upper plate 8, and the chip, etc., are forcibly dropped through the induction to the side part of obliquely rear part of the cover with this front end edge 20 inclined to obliquely rear part. The chip, etc., gathered on the upper plate of the cover can be discharged thus with their dropping to the side of obliquely rear part of the cover, and the inconvenience of the chip being accumulated in the gap between the bed front end and a work table, etc., is eliminated, even in case of this gap being narrow.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a dustproof slide cover for machine tools and the like.

<Conventional technology> In order to prevent chips, etc. from falling and adhering to the bed guide surface in machine tools, a dustproof slide cover is installed that expands and contracts on the bed guide surface following the forward and backward movement of the spindle head saddle. are doing.

As shown in FIG. 3, this slide cover has a plurality of cover elements arranged on the guide surface 3 of the bed 1, including a frontmost innermost cover element 6a, an intermediate cover guide 6b, and a rearmost outermost cover element 6C. As shown in FIG. 4, the locking plate 13 and the sliding contact plate 14 are attached to the rear end of each cover element, and the locking plate 1 is attached to the front end of each cover element.
The frontmost innermost cover element 6a is attached to the front end of the bed 1, and the rearmost outermost cover element 6C is attached to the front end of the spindle head saddle 2. It is a structure. In particular, in the hole machining unit, the tip of the cutting tool protrudes the required amount from the front end of the bed.
In addition, it is not preferable to configure the spindle head to have a large overbank amount in terms of hole machining accuracy. Therefore, as shown in FIG. 3, the frontmost and innermost cover element 6a is supported by a bracket 7 provided so as to protrude from the front end of the bed 1, and the dustproof awning plate 10 at the front end of the cover element 6a is attached to the bracket 7. It is fixed to the front end surface.

<Problems to be Solved by the Invention> As shown in FIG. 5, the front edges 20 of each of the cover elements 6b and 6C are perpendicular to the advancing and retreating direction of the slide cover, so that chips that accumulate on the cover 1 can be removed. When each cover element 6b, 6C moves forward, it is pushed forward by the front end edge 20 of each cover element 6b, 6C. Therefore, if there is an obstacle on the front side, it is not a good idea to eliminate the chips by just pressing the chips that are pushed out to the front side and compacting them. In particular, when the frontmost innermost cover element 6a is provided to protrude from the front end of the bed 1 as shown in FIG. 3, the gap with the workpiece table 5 is narrow.
There is a problem that chips accumulate in this gap.

Means for Solving the Problems> The present invention aims to solve the above problems, and has a structure in which the front edge of the upper plate portion of each cover element is formed so that approximately the center in the width direction The apex is inclined rearward with respect to the direction of extension of the cover element.

With the above configuration, when each cover element moves forward, chips, etc. accumulated on the upper surface of the cover are removed from the front edge of the upper plate section at the apex at the approximate center in the width direction of the front edge that slopes diagonally backward to the left and right. The front edge, which slopes diagonally backward, forcibly guides the chips and the like to fall to the diagonally rear side of the cover.

<Example> Hereinafter, an example of the present invention will be described based on FIGS. 1 and 2. Note that the telescopic structure of each cover element and its attachment to the bed and spindle head saddle are the same as the conventional structure shown in FIG. 3, and are therefore not shown.

In FIG. 1, 6a is the frontmost innermost cover element, 6b
is a through cover element, 6c is the rearmost outermost cover element, 2 is the spindle head saddle, 8 is the upper plate part of each cover element 6a to 6c, 9 is a side plate, 1o is the frontmost innermost cover element 6a
This is a dustproof awning plate.

In the present invention, the front end edge 20 of the upper plate part 8 of each of the cover elements 6a to 6c is inclined at an angle θ diagonally rearward with respect to the extending direction of the cover element, with the apex 21 being approximately at the center in the width direction. .

In the case of Fig. 1, the L plate portion 8 is planar, but as shown in Fig. 2, it forms a sloped surface that slopes left and right with the apex approximately at the center in the width direction, just like the roof of a house. You can.

Since the present invention has the structure as described above, each cover element 6
When moving forward of a to 6C, the chips and the like accumulated on the upper surface of the cover are distributed to the front edge 20 which is inclined diagonally backward to the left and right at the apex 21 of the front edge of the upper plate part 8 at the approximate center in the width direction. The front edge 20, which is not inclined backward, forcibly guides chips and the like to fall to the diagonally rear side of the cover. In addition, if the upper plate part 8 is formed with a horizontally inclined sloped surface as shown in FIG. 2, the falling of chips and the like to the diagonally rear side part is further promoted.

<Effects of the Invention> As described above, according to the present invention, a plurality of cover elements are telescopically superposed and connected, and the frontmost and innermost cover elements are connected to the front end of the fixed base via the support bracket, and the last The outermost end cover elements are each attached to the front end of the movable base, and in the slide cover formed by the top plate part and the side plate, cover the front edge of the top plate part of each cover element with the apex at the approximate center in the width direction. Since the structure is tilted diagonally rearward with respect to the direction of extension of the element, chips etc. accumulated on the upper plate of the cover can be discharged by falling to the side diagonally rearward of the cover, and the front end of the bed and Even if the gap between the workpiece table and the like is narrow, the inconvenience of chips accumulating in this gap is eliminated6.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the present invention, Fig. 2 is a perspective view showing another embodiment of the invention, Fig. 3 is a vertical sectional view of a conventional slide cover installed on the bed of a machine tool, and Fig. 4 is a perspective view of the present invention. FIG. 5 is a sectional view of a connecting portion of each cover element, and a perspective view of a conventional slide cover. 6a... Frontmost innermost cover element, 6b... Intermediate cover element, 6C... Rearmost outermost cover element, 8...
- Upper plate portion, 20...front edge, 21...apex.

Claims (1)

[Claims] A plurality of cover elements are telescopically and overlappingly connected, and the frontmost innermost cover element is attached to the front end of the fixed base via a support bracket, the rearmost outermost cover element is attached to the front end of the movable base, and the uppermost cover element is attached to the front end of the movable base via a support bracket. In a slide cover formed of a plate part and a side plate, the front end edge of the upper plate part of each cover element is tilted diagonally rearward with respect to the extending direction of the cover element with the apex at approximately the center in the width direction. A slide cover.