JPH0429959Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a slide cover device. The present invention can be used, for example, in a slide cover device that protects a sliding surface provided on a machine tool.

[Prior Art] Conventionally, in the field of machine tools, slide cover devices that protect sliding surfaces have been provided. As shown in FIG. 4, this slide cover device consists of a base 100 having a sliding surface 101 extending in one direction and forming a headstock, etc.;
A tool mounting base 200 that is provided so as to be able to move forward and backward along the tool mounting base 200 and the base 10.
0 and is connected to the tool mount 200 and the base 100.
and a telescopic cover member 300 interposed between.

The extendable cover member 300 is formed by connecting a large number of cover plates 301 to 305 that cover the sliding surface 101 so that they can be overlapped with each other. Here, the cover plate 301 is locked to the fixed bracket 102 on the terminal end 101a side of the sliding surface 101, and the cover plate 305 is locked on the tool mount 200 on the starting end 101b side of the sliding surface 101.

In the slide cover device described above, when the tool mount 200 moves forward (in the direction of arrow E) or retreats (in the direction opposite to the direction of arrow E) along the slide surface 101, the plurality of cover plates 301 to 305 overlap each other. The amount changes in size, thereby expanding and contracting the length of the expandable cover member 300. Therefore, whenever the tool mount 200 is located on the sliding surface 101, the telescopic cover member 300 is placed on the sliding surface 101.
can be covered.

However, in the conventional slide cover device described above, the telescopic cover member 30 is always
Although the slip surface 101 can be covered with 0,
Due to the presence of a large number of cover plates 301 to 305,
The overlapping amount of the cover plates 301 to 305 becomes large, and the amount of protrusion of the expandable cover member 300 from the base 100 tends to become large. Therefore, the distance N between the base portion 100 and the jig main body 90 installed at a distance in front of the base portion 100 tends to become narrower. Therefore, defective removal of chips M through the interval N tends to occur.

[Problems to be Solved by the Invention] The present invention is an improvement over the conventional slide cover device.

An object of the present invention is to provide a slide cover device which is advantageous in terms of reducing the amount of protrusion of a telescopic cover member.

[Means for solving the problem] The present inventor believes that in a normal machining cycle,
If you do not use the stroke of the tool mount, but use a predetermined range of the forward position and lower the tool mount to the backward end, you can use the work characteristics of the tool change operation to move the tool on the tool mount. When the machine is not in use, the workpiece is not machined with tools, so no chips are generated, and this invention was developed based on the realization that there is no problem even if the sliding surface is exposed. .

That is, the slide cover device according to the present invention is
The tool mounting base has a base with a sliding surface extending in one direction, a tool mounting stand provided on the base so as to be able to advance and retreat along the sliding surface, and an extensible cover member formed by connecting at least two cover plates interposed between the tool mounting stand and the base and covering the sliding surface so that they can be superimposed on each other, one of the at least two cover plates of the extensible cover member is fixed to the tool mounting stand and the other is held in a free state on the sliding surface so as to be engageable with one of the cover plates, the base has a stopper projection at the end of the sliding surface in the forward direction of the tool mounting stand, and the tool mounting stand has a biasing member which biases the at least two cover plates constituting the extensible cover member in the direction in which they extend relative to each other and biases the other cover plate of the extensible cover member in the forward direction of the tool mounting stand to keep the other cover plate in contact with the stopper projection while the extensible cover member extends or contracts.

Here, in order to reduce the amount of protrusion of the cover member, it is preferable that the number of cover plates forming the expandable cover member covering the sliding surface be as small as possible. For example, it is preferable to use two sheets.

Preferably, the telescopic cover member has a wiper member attached to the other end of the telescopic cover member so as to face the sliding surface of the base and slidingly contact the sliding surface of the base as the tool mount moves forward and backward.

If the wiper member is provided in this way, as shown in the embodiment described later, when the tool mount advances toward the end of the sliding surface, the wiper member slides along the sliding surface and ends on the sliding surface. Since it moves toward the sliding surface, chips and dust on the sliding surface can be removed, which is advantageous for cleaning the sliding surface.

[Function] When the tool on the tool mount is not in use, for example when exchanging tools, the tool mount is moved back on the sliding surface. Although the sliding surface is exposed due to this retreat, since the tool is not in use, the workpiece is not being machined, and no new chips are generated, so there is no particular problem even if the sliding surface is exposed.

On the other hand, when a tool is used to generate chips, the tool mount is reciprocated within a predetermined stroke range. In this case, the other end of the extendable cover member is brought into contact with the stopper protrusion located at the terminal end of the sliding surface, thereby eliminating the exposed portion of the sliding surface.

[Embodiment] An embodiment in which a slide cover device according to the present invention is applied to a machine tool will be described with reference to FIGS. 1 to 3.

The slide cover device according to this embodiment has two flat sliding surfaces 10 extending in one direction, that is, the horizontal direction, and a sliding surface 11 between the sliding surfaces 10.
a base 1 with It is composed of a telescopic cover member 3 formed by connecting two cover plates 30 and 31 such that they can be overlapped with each other. Here, the sliding surface 10 is the base 1 as shown in FIG.
It is formed by the upper surface part of the guide rail 12 fixed to the guide rail 12. The sliding surface 11 is formed by the upper surface portion of a plate portion 13 fixed to the base portion 1. The cover plate 30 and the cover plate 31 are slidably fitted together. In this case, cover plates 30 and 3
There are almost no gaps between the lines.

The base 1 forms a support base and becomes a fixed part of the machine tool.

The tool mount 2 is a pedestal for supporting a shaft head on which a tool is replaceably mounted.

Cover plates 30 and 31 forming the extendable cover member 3 are for covering the sliding surfaces 10 and 11, and have similar gate shapes as shown in FIG. One end 31a of the cover plate 31 of the telescopic cover member 3 is fixed to the tool mount 2 by a fixture 31b, and the other end 30b of the cover plate 30 of the telescopic cover member 3 is in a free state. It functions as an occlusion plate that blocks the.

Now, in the slide cover device according to this embodiment, the base 1 has a sliding surface 1 as shown in FIG.
1, the forward direction of the tool mount 2, that is, the arrow A
It has two stopper protrusions 4 fixed to the end portion 11a of the direction. The tool mount 2 also has a biasing member 5 that urges the other end 30b of the cover plate 30 of the telescopic cover member 3 in the forward direction of the tool mount 2, that is, in the direction of arrow A, as shown in FIG. It is characterized by

As shown in FIG. 2, the biasing member 5 includes an elongated guide bar 50 connected between the cylindrical portion 30c of the cover plate 30 and the tool mount 2, and a brim that covers the guide bar 50. It consists of a coiled spring 51 interposed between the portion 30d and the fixture 50d. The spring 51 always biases the cover plates 30 and 31 of the telescopic cover member 3 in the direction of extension. Therefore cover plates 30 and 31
Assuming that the maximum amount of expansion is 100, the amount of expansion of the cover plates 30 and 31 is 100 due to the biasing force of the spring 51 in the state shown in FIG. Therefore, in this embodiment, the original cover area of the telescopic cover member 3 can be effectively utilized, and the covering efficiency of the telescopic cover member 3 is high. Here, one end 50a of the guide bar 50 is connected to the tool mount 2 by a fixture 50d. When the tool mount 2 moves forward along the sliding surfaces 10 and 11, that is, in the direction of arrow A, the spring 51 elastically contracts, and the guide bar 50 resists the biasing force of the spring 51 and moves inside the space 30d of the cylindrical portion 30c. can be moved.

As shown in FIG. 3, the telescoping cover member 3 has a wiper member 6 and a wiper member 7 attached to the other end 30b of the cover plate 30 of the telescoping cover member 3 with fixtures 60a and 70a.

The wiper member 6 and the wiper member 7 are
As shown in the figure, it is provided opposite the sliding surfaces 10 and 11 of the base 1. The wiper member 6 is moved from the base 1 by moving the tool mount 2 forward in the direction of arrow A.
It comes into sliding contact with the sliding surface 11 and cleans the sliding surface 11. Further, the wiper member 7 cleans the sliding surface 10 in the same manner. Note that 90 is a jig main body installed in front of the base 1 with a space therebetween.

Now, when machining a workpiece using the tool on the tool mount 2 and generating chips, etc., as shown in FIG. direction, and the other end 30b of the extendable cover member 3 is brought into contact with the stopper protrusion 4. In this state, the sliding surfaces 10 and 11 are covered by the expandable cover member 3, so the sliding surfaces 10 and 11 are not exposed, and therefore chips, etc. do not fall onto the sliding surfaces 10 and 11, and the sliding surfaces 10 and 11 are not exposed. 10 and 11 are protected. When machining the workpiece, the tool mount 2 reciprocates, and the machining cycle stroke S when the tool mount 2 reciprocates is within the range shown in FIG.
Therefore, even when the tool mount 2 is moved backward as shown by the solid line in FIG.
and protection of 11 is ensured.

On the other hand, when no tools are used and no chips are generated, such as when replacing the tool on the tool mount 2, the tool mount 2 is moved from the sliding surface 10 to the base 1, as shown in FIG. 11 is moved backward, that is, in the direction opposite to the direction of arrow A.
As a result, although the sliding surfaces 10 and 11 are exposed, there is no particular problem even if the sliding surfaces 10 and 11 are exposed because no new chips are generated when the tool is not used.

In the state shown in FIG. 2, the cover plates 30 and 31 are stretched to the maximum extent by the biasing force of the spring 51, so the exposed area of the sliding surfaces 10 and 11 can be kept as small as possible even when no tools are used. is obtained.

In this manner, in this embodiment, no chips or the like are generated when the tool is not in use, so there is no particular problem even if the sliding surfaces 10 and 11 are exposed. Therefore, the number of cover plates forming the telescopic cover member 3 can be reduced to two, which is advantageous because the amount of protrusion of the telescopic cover member 3 when the tool mounting base 2 moves forward can be reduced compared to the conventional method. . Therefore, the distance between the jig main body 90 provided in front of the base 1
A large N'' can be secured, which is advantageous for removing chips.

Note that even if old chips are placed on the sliding surfaces 10 and 11 during tool replacement, the tool mount 2 is moved forward again in the direction of arrow A during machining, so when moving it forward, the wiper member 6 and 7 allows the sliding surfaces 10 and 11 to be cleaned.

[Effects of the invention] According to the invention, the amount of protrusion of the extendable cover member can be reduced. Therefore, even if the jig body is located in front of the base, a large distance from the jig body can be ensured, which is advantageous for removing chips.

Further, according to the present invention, since a biasing member is provided that always biases at least two cover plates constituting the telescopic cover member in the direction of extension, the other cover plate of the telescopic cover member is attached to the tool mount. It can always be biased in the forward direction. Therefore, while the tool mount moves forward in the direction of the stopper protrusion, although the telescopic cover member contracts, the other cover plate of the telescopic cover member continues to abut against the stopper projection. As a result, the sliding surface of the base can be always covered when the tool mount is moved forward, and the problem of chips getting on the sliding surface can be avoided.

[Brief explanation of the drawing]

Figure 1 is a longitudinal cross-sectional view of the main parts of the slide cover device during machining using tools, Figure 2 is a vertical cross-sectional view of the main parts of the slide cover device when changing tools, and Figure 3 is the slide FIG. 3 is a perspective view of main parts of the cover device. FIG. 4 is a longitudinal sectional view of a conventional slide cover device. In the figure, 1 is a base, 10 is a sliding surface, 12 is a guide rail, 2 is a tool mount, 3 is a telescopic cover member, 30 and 31 are cover members, 31a is one end,
30b is the other end, 4 is a stopper projection, and 5 is a biasing member.

Claims (1)

[Claims for Utility Model Registration] (1) A base having a sliding surface extending in one direction, a tool mount provided on the base so as to be movable forward and backward along the sliding surface, and a telescopic cover member formed by connecting at least two cover plates interposed between the base and the sliding surface so as to be superimposed on each other, one of the at least two cover plates of the telescopic cover member being The base is fixed to the tool mount, and the other is held in a free state on the sliding surface so that it can be locked to the one cover plate, and the base is provided with a stop at the end of the sliding surface in the forward direction of the tool mount. The tool mount has a protrusion, and the tool mount urges at least two cover plates constituting the telescoping cover member in a direction in which they extend relative to each other, and urges the other cover plate of the telescoping cover member in the forward direction of the tool mount. A sliding cover device comprising: a biasing member that keeps the other cover plate in contact with the stopper protrusion while the expandable cover member expands and contracts. (2) The telescopic cover member has a wiper member attached to the other end of the telescopic cover member so as to face the sliding surface of the base, and comes into sliding contact with the sliding surface of the base as the tool mount advances and retreats. A sliding cover device according to claim 1 of the patent registration claim.