JPH088053Y2 - Guide face protection cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a guide face protection cover for a lathe having two or more sets of vertical feed guide faces.

2. Description of the Related Art In a compound lathe, at least two front and rear turrets or one or two headstocks are respectively configured to be movable on a vertical feed guide surface, and a guide surface protective cover is a telescopic cover type. Often used, the ends of the top and bottom plates are fixed between the tool post or headstock and the bed, respectively. As such a cover, for example, Jitsuko Sho 63-250
No. 76 is known.

The problem to be solved by the invention is that, in Japanese Utility Model No. Sho 63-25076, as shown in FIG. 4, the front cover of the vertical feed guide surface is formed as a step-down shape and is a protective cover for the vertical feed guide surface that is offset due to the step drop. Since the rear edge of the cover is fitted in the rail groove in the same direction as the cover of the chip invasion control tool, the vertical feed guide surface must be deviated into a paragraph shape, and the guide is guided from the center of the spindle. There is a problem that the distance to the surface increases and the rigidity decreases. In addition, there is an increase in manufacturing cost and a saving in manufacturing. Further, since the cover groove is parallel to the cover surface and a flat cover trailing edge is fitted and slides, there is a problem that fine chips and cutting fluid may enter. Furthermore, the guideability of the telescopic cover is poor, and the wiper mounting side of the cover may come off from the groove and hang down, resulting in a problem in strength.

The present invention has been made in view of the above problems of the prior art. The purpose of the present invention is to improve the guideability and sealability of the cover to reliably prevent the ingress of cutting fluid and chips. It is intended to provide a face protection cover.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides a protective cover on at least two sets of left and right guide surfaces on the same inclined surface in the front-rear direction formed on a base. The mutual protective covers are positioned at a step in the front-rear direction at adjacent portions and are engaged in an overlapping state. Further, at least one movable table is movably mounted on at least two frontwardly inclined vertical feed guide surfaces provided on the bed, and a telescopic cover or one guide surface protection cover is provided on the movable table. In this machine tool, each of the guide surface protection covers is inclined with respect to the longitudinal feed guide surface, and the cover and the cover are formed in a step downward to the front and brought into engagement with each other, and the guide rail is attached to the bed via the guide rail. It was supported.

Action According to the first aspect, when water is made to flow to the cover of the upper portion, the water flows to the cover of the lower portion through the step due to the inclination. At the step, the upper and lower covers overlap, so there will be no leak on the guide surface.

According to claim 2, the cover sequentially moves on the vertical feed guide surface and the guide rail in accordance with the movement of the movable table, and the chips and cutting fluid dropped on the cover midway flow down the upper surface of the inclined upper portion and travel through the step. It flows down to the upper surface of the cover at the lower part,
The guide rail and the stepped portion in the engaged state allow the material to flow down without entering the inside.

EXAMPLE An explanation will be given below with reference to FIGS. 1 to 3.

On the slant type bed 1 of the compound lathe, two sets of vertical feed guide surfaces 1a and 1b are formed on the same inclined surface which is lowered frontward. On a vertical feed guide surface 1a in the upper part, a headstock (included in a moving table) 2 rotatably supporting a spindle having a chuck 3 fitted at its tip is movably mounted, and an NC device (not shown) is provided.
Longitudinal feed (Z axis) by feed screw 4 rotated by a motor
The position is controlled in the direction. And the headstock 2 is 2 if necessary
Pieces are placed opposite.

On the vertical feed guide surface 1b at the lower portion, the position of the movable table 6 is controlled in the Z-axis direction by the NC device and the feed screw 7 rotated by the motor. The position of the turret tool post 9 is controlled on the guide surface 6a of the moving table 6 in the cutting direction (X axis) by an NC device and a feed screw rotated by a motor. A plurality of tools T are attached to the turret 8.

A guide 11 is fixed to the back of the bed 1 behind the vertical feed guide 1a, and a turret tool rest 12 is movably mounted on the upper X-axis direction guide 11a and rotated by a motor 13. The position is controlled in the X-axis direction by the feed screw. Turret
A plurality of tools T are mounted on the 14.

Next, regarding the protective cover of the present invention, the L-shaped cover 21 for stopping chips and cutting fluid scattered to the rear side of the bed is located at a position above the vertical feed guide surface 1a by the bracket 22 whose lower end is attached to the upper rear part of the bed 1. It is fixed. A guide rail 23 is fastened to the lower surface of the lower end of the cover 21, and a plurality of rail grooves 23a are formed stepwise downward in the Z-axis direction to the bed length.

An uppermost plate 25a of a telescopic cover 25 that covers the vertical feed guide surface 1a is fixed to both sides of the headstock 2 in the Z axis direction.
The bottom plate 25c is fixed to both ends of the bed 1. The uppermost plate 25a of the telescopic cover 25 has an L shape in which the lower end edge is bent at a substantially right angle to the lower side, and the second and lower sheets 25b and 25c are bent at a substantially right angle at the upper edge and the lower edge. The Z-shaped bent portion of the upper edge is sequentially slidably fitted in the rail groove 23a of the guide rail 23, and is sequentially accommodated under the upper plate. On the back side of the telescopic cover 25, two guide rods 26, 27 parallel to the vertical feed guide surface 1a and having a bed length are arranged in parallel and fixed to the bed at both ends. Then, support brackets 28 and 29, which are respectively mounted on guide rods 26 and 27, are attached to the ends of the second and lower 25b and 25c of the telescopic cover 25 near the headstock 2, respectively, to assist and guide the telescopic cover 25 up and down. Is prevented. Further, the bent end of the lower end edge of the telescopic cover 25 is on the same plane, and a sealing material 25b for eliminating a gap between the covers is attached to the side surface of the end, which is fixed to the middle of the vertical feed guide surfaces 1a, 1b. It is received and guided by the upper surface of an L-shaped pressing plate 32 attached to the upper surface of the table 31.

More importantly, the telescopic cover 25 inclines more gently to the front with respect to the vertical feed guide surface 1a inclined forward, and a step is formed with the protective cover 35 of the vertical feed guide surface.

Guide surface protection covers 35 that cover the vertical feed guide surfaces 1b are fastened to both sides of the movable table 6 in the Z-axis direction. This cover 35 is a single cover in this example because the moving range of the moving table 6 is small, and the upper end edge is a groove formed between the receiving table 31 and the pressing plate 32.
It is slidably fitted to 31a, and its lower end is bent to the back side of the guide surface so as to wrap around the vertical feed guide surface 1b at the lower portion. The guide surface protection cover 35 is inclined more gently downward than the vertical feed guide surface 1b. The inclination angle may be the same as or different from the inclination angle of the telescopic cover 25.

When the movable range of the movable table 6 is large, a telescopic type is used instead of the single cover, and the upper edge of each is similarly bent upward by approximately 90 °, while the guide rail is provided below the pressing plate 32. The same thing as 23 is attached and the bent ends are sequentially fitted in the downward rail groove.

 The operation of the present invention thus constructed will be described.

The workpiece is gripped by the chuck 3 and the turrets 8 and 14 index a predetermined tool to a machining position. First, the turret turret 9 is X
The outer diameter of the workpiece is cut by controlling the axis and Z axis. The guide surface protection cover 35 slides in the rail groove 31a by the movement of the movable table 6.

After cutting the outer periphery of the first step, cut the turret 14
The rotary tool T is rotated to feed the headstock 2 in the Z-axis to cut the key groove in the outer peripheral axial direction of the workpiece. In the telescopic cover 25 on the side where the headstock 2 is fed, the uppermost step 25a moves so that the upper edge moves on the lower surface of the cover 21 and overlaps the second sheet. Next, the second sheet moves and the upward bending end moves in the rail groove 23a and overlaps the third sheet. And telescopic cover 25
Is lifted by being supported by the guide rods 26 and 27, and is prevented from falling, and does not move so as to widen the gap at the end of the cover.

The cutting chips and cutting water generated by the tool T are applied to the entire surface of the cover, but those flying to the cover 21 flow down the inclined surface and flow from the lower end onto the telescopic cover 25. Also, what flies to the telescopic cover 25 tries to enter the upper edge as well, but since the rail groove 23a is directed downward and the bent end is fitted upward, it flows backward and flows down on the surface. Further, it flows down onto the guide surface protection cover 35. What has scattered and entered the pressing plate 32 from the upper end of the cover 35 is stopped by the L portion of the pressing plate 32 and flows backward. The lower side bent portion of the telescopic cover 25 is blocked by the sealing material 25b.

EFFECTS OF THE INVENTION Since the present invention is configured as described above, the present invention has the following effects.

The guide surface protection cover is slightly tilted with respect to the vertical feed guide surface, and a step is formed between the upper cover and the lower cover to overlap and engage them, so the sealing structure at the cover end is reliable and chips are removed. Also, it becomes an inexpensive cover with good drainage. In addition, since it is not necessary to deviate the bed particularly in a paragraph shape, the manufacture is easy and the cost is reduced.

Further, it is possible to prevent the cover edge from being slanted downward, and particularly to prevent the wiper sides on both outer sides from being slanted downward when the telescopic cover is contracted.

[Brief description of drawings]

FIG. 1 is a cross sectional explanatory view of the present invention, FIG. 2 is an explanatory side view mainly showing a telescopic cover, FIG. 3 is an enlarged view of a guide rail portion, and FIG. 4 is a view showing a conventional example. 1 …… Bed 1a, 1b …… Vertical feed guide surface 2 …… Spindle base, 6 …… Movement base 23 …… Guide rail, 23a …… Rail groove 25 …… Telescopic cover 26,27 …… Guide rod 35 …… Guide surface protection cover, 32 ...... Presser plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Keizo Yamakawa 1-32 Tsujimachi, Kita-ku, Nagoya-shi, Aichi Prefecture Okuma Iron Works Co., Ltd. (56) References Actual Development Sho 60-167648 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. A protective cover is provided on each of at least two sets of left and right guide surfaces on the same inclined surface in the front-rear direction formed on a base, and the protective covers have a step in the front-rear direction at an adjacent portion. The guide surface protection cover is characterized in that the guide surface is positioned and is engaged in an overlapping state. 2. A telescopic cover or a guide surface protection cover is movably mounted on at least two longitudinal feed guide surfaces inclined on the front side provided on the bed, and the movable table is provided with the telescopic cover. In the machine tool installed in
Each of the guide surface protection covers is inclined with respect to the vertical feed guide surface, and the cover and the cover are formed in a step of a front downward direction and are in an engaged state, and are supported by the bed via the guide rails. Protective cover for the guide surface.