JP2551316Y2 - Vertical telescopic cover - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical telescopic cover which separates a machining area from an X-axis movable saddle on which a spindle ram of a horizontal machining center is mounted.

[0002]

2. Description of the Related Art Conventionally, a vertically movable telescopic cover which vertically separates a work area of a workpiece and a saddle capable of moving an X axis, which is equipped with a spindle ram capable of moving a Z axis, is provided with two telescopic covers as shown in FIGS. There is a method. In the telescopic cover shown in FIG. 6, a plurality of guide rollers 102 are attached to the back side of the processing area of the moving cover 101 fixed to the saddle, and the fixed cover 103, the intermediate covers 104A and 104B are provided with elongated holes whose upper surfaces are in contact with the guide rollers. Each is provided. In the telescopic cover of FIG.
A, 108B, guide rollers 10
9 is provided.

[0003]

In the telescopic cover of FIG. 6 described in the prior art, the moving cover 101 and the intermediate covers 104A and 104B do not always move at the same time.
There is a case where the roller and the cover do not come into rolling contact but come into sliding contact. For this reason, there is a problem that the change in resistance is large, and the resistance changes each time the number of moving covers changes, which adversely affects the accuracy of positioning the saddle in the X-axis. Since the guide roller 102 is received in the width, the surface pressure applied to the guide roller 102 is high, and there is also a problem that abrasion is large.

[0004] The telescopic cover shown in FIG.
Since 06 is on the processing area side, chips and the like are easily deposited,
There is a problem that the lubricating oil of the guide roller 109 is washed away and the rotation of the roller is likely to be uneven. The present invention has been made in view of such problems of the prior art, and the purpose thereof is to prevent chips and cutting fluid from being applied to the guide portion and to maintain a smooth operation for a long time. The aim is to provide a vertical telescopic cover.

[0005]

In order to achieve the above object, a vertical telescopic cover according to the present invention is provided with an X-axis movable saddle on which a main shaft ram of a horizontal machining center is mounted so as to be movable in a Z-axis and a machining area. In the vertical telescopic cover, a guide rail is provided on the back side of the processing area along the first elongated hole in the X-axis direction formed in the upper part of the fixed cover, and the second elongated part in the X-axis direction is provided on the upper part. A plurality of first support roller members are provided on both sides of the second elongated hole on both sides of the second elongated hole on the guide rail so as to roll on the guide rail on the back side of the processing area of at least one intermediate cover having a hole. Rolling on the guide rail through the first and second long holes behind the processing area of the moving cover fixed to the front end surface of the saddle and having the entrance and exit of the spindle ram at the center. A plurality of second support rollers The provided the main shaft ram and windows through which the saddle substantially in the center of the fixed cover and the intermediate cover is made by respectively.

[0006]

When, for example, the saddle at the right end in the X-axis direction moves to the left, only the moving cover first moves to the left together, and the roller base of the second support roller member contacts the left end of the second elongated hole of the intermediate cover. Slightly before, the abutment plate on the moving cover side contacts the stopper on the intermediate cover side, and the intermediate cover moves leftward together. Then, slightly before the roller base of the first support roller member contacts the left end of the first elongated hole of the fixed cover, the saddle is positioned at the left moving end.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below with reference to the drawings. In the horizontal machining center shown in FIG. 1, a saddle 2 is movably mounted on a guide in the X-axis direction provided on the rear side of the bed 1, and a spindle ram 3 is placed on the guide in the Z-axis direction on the saddle 2. Are mounted so that they can be moved and positioned, and the main shaft 4 is rotatably supported on the main shaft ram 3. The front side of the bed 1 is a processing area on which a work mounting device (not shown), which can be rotated and indexed on an XY plane, is placed, for example, so as to be in close contact with the front side of the saddle 2 on which the spindle ram 3 is mounted. The telescopic cover 5 of the present invention is erected, and an NC device 10 is installed beside the bed 1.

The rearmost fixed cover 6 of the telescopic cover 5 is fixed to a frame plate 7 fixed to the bed 1, and a guide rail 8 is fixed in the X-axis direction to the back of the upper processing area. The guide rail 8 is formed with a long hole over substantially the entire length, and the lower surface of the long hole is formed on the guide surface 8a. The fixed cover 6 has a first long hole 6a formed at the same position as the long hole, and a window 6b through which the saddle 2 and the main shaft ram 3 pass is formed substantially at the center. The frontmost movable cover 9 of the telescopic cover 5 is attached to the front side surface of the saddle 2 via a support 11 and a front plate 12, and the movable cover 9 and the front plate 12 of the main spindle ram 3 having a roof-shaped cover 13 are provided. An entrance 9a is provided.

The two intermediate covers 14 and 15 between the fixed cover 6 and the movable cover 9 are provided with second elongated holes 14a and 15a and windows 14b and 15b having different lengths, respectively. Stoppers 16 to 18 each having a soft material such as rubber adhered thereto are fixed to inner sides of both ends of the windows 6 a, 14 a and 15 a, respectively, and contact plates 19 are fixed to the moving cover 9 on both sides of the front plate 12. Further, scrapers 24 are fixed to both ends of the movable cover 9 and the intermediate covers 14 and 15 on the side of the processing area, and a plurality of stepped plates 25 formed stepwise so that chips are not easily deposited on the lower end processing area of the fixed cover 6.
A guide rail 25 having a is provided.

[0010] moving the cover 9 is the roller stand 26 are two fixed within second slot 14a to the distance L ₁ by movable with a margin pitch, the roller table 26 second long hole 14
a, 15a and the first elongated hole 6a, a support roller 27 is pivotally supported at the tip. The support roller 27 abuts on the guide surface 8a to movably support the movable cover 9. The intermediate covers 14 and 15 have second elongated holes 14 a and 15
roller table 28 and 29 near both ends position of a are respectively fixed, the roller base 28 of the intermediate cover 14 is movable with a margin of the second slot 15a by a distance L _2,
The roller table 9 of the intermediate cover 15 is movable with a margin within the first elongated hole 6a by a distance L _3. The roller base 28 penetrates the second elongated hole 15a and the first elongated hole 6a, and the roller base 29 penetrates the first elongated hole 6a, and a support roller 27 is pivotally supported at the tip.
The intermediate covers 14 and 15 are movably supported in contact with the guide surface 8d, and the maximum X-axis movement amount L ₁ + L ₂ + L of the saddle 2 is provided.
₃ are secured.

Next, the operation of the embodiment will be described. When the seat 2 being positioned in the right end position of the X axis is moved to the left, moving cover 9 is moved together by a distance L ₁ where the left row, the roller table 26 approaches the left end of the slot, caul 19 Abuts the stopper 18 at the left end of the window 14b, and the intermediate cover 14 moves leftward together with the movable cover 9. Left row further distance L ₂ in this state, the roller base 28 elongated hole 15
close to the left edge of a, the intermediate cover 15 is intermediate the cover 14 stopper 18 abuts against the stopper 17, and left row with mobile cover 9, when only the moving distance L _3, the roller base 29
Approaches the left end of the slot 6a, and the stopper 17
Saddle 2 is positioned at the left end of the X-axis by lightly contacting the soft material 6.

[0012]

[Effects of the Invention] The present invention is configured as described above and has the following effects. The guide rail is provided on the back side of the processing area, and the supporting roller members that roll on the guide rail are provided on the back side of the moving cover and the intermediate cover.
There is no intrusion of chips and cutting fluid into the guide part, and lubricating oil of the rolling bearings of the support rollers does not flow out due to the chip fluid, and chips do not accumulate on the guide surface, reducing slide resistance. As a result, the X-axis positioning accuracy of the saddle is stabilized, and the bearing life of the support roller is extended. Further, since the fulcrum of each cover by the support roller is located at an eccentric position where the scraper is pressed, it is possible to prevent the intrusion of chips.

[Brief description of the drawings]

FIG. 1 is a perspective view of a horizontal machining center with a vertical telescopic cover according to the present embodiment.

FIG. 2 is a cross-sectional view of a vertical telescopic cover side surface.

FIG. 3A is a front view of a vertical telescopic cover,
(B) is a partial front view showing a state in which the moving cover is removed from (a), (c) is a partial front view showing a state in which one moving cover and one intermediate cover are removed from (a), and (d) is a front view. It is a front partial view showing the state where two movable covers and two intermediate covers were removed from a).

FIG. 4 is a vertical cross-sectional view of the vertical telescopic cover.

FIG. 5 is an explanatory diagram of a support roller member.

FIG. 6 is a diagram illustrating an example of a vertical telescopic cover according to the related art.

FIG. 7 is a diagram showing another example of a vertical telescopic cover according to the related art.

[Explanation of symbols]

1 Bed 2 Saddle 3 Main shaft ram 4 Main shaft 6 Fixed cover 6a First elongated hole 8 Guide rail 8a Guide surface 9 Moving cover 12 Front plate 14,15 Intermediate cover 14a, 15a
2nd long hole 26 roller stand 27 support roller

Claims (1)

(57) [Scope of request for utility model registration] 1. A vertical telescopic cover for separating a machining area from an X-axis movable saddle on which a spindle ram of a horizontal machining center is mounted so as to be movable in the Z-axis, and an X-axis drilled above a fixed cover. A guide rail is provided on the back side of the processing area along the first long hole in the direction, and the second long hole is provided on the back side of the processing area of at least one intermediate cover having a second long hole in the X-axis direction on the upper side. A movable cover having a plurality of first support roller members that penetrate the first elongated hole and roll on the guide rail on both sides of the saddle; A plurality of second support roller members that pass through the first and second long holes and roll on the guide rail are provided on the back side of the processing area;
A vertical telescopic cover, wherein a window through which the spindle ram and the saddle pass is provided substantially at the center of the fixed cover and the intermediate cover, respectively.