JP2019069492A - Cover for machine tool and machine tool - Google Patents

Abstract

To achieve compactification of a machine width without affecting maintenance work etc. conducted by opening/closing of a front face door and a ceiling shutter to improve productivity.SOLUTION: A machine tool cover 10 includes a front plate part 11 having a front opening 13 and an upper plate part 12 having an upper opening 14. A front face door 15 which can open or close the front opening 13 and a ceiling shutter 16 which can open or close the upper opening 14 are formed as separate bodies and attached to the machine tool cover 10 so as to enable opening/closing operation. Further, a front guide 19 which guides the opening/closing operation of the ceiling shutter 16 at the front side is provided at the front face door 15 side. A rear guide 23 which guides the opening/closing operation at the rear side and an air cylinder 24 which opens or closes the ceiling shutter 16 are provided at the upper plate part 12 side.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a machine tool cover used for a machine tool such as an NC lathe, and a machine tool provided with the machine tool cover.

  A machine tool such as an NC lathe is provided with a machine tool cover (hereinafter simply referred to as a "cover") covering at least a front surface and an upper surface. A front opening and an upper opening are formed on the front and upper surfaces of the cover on the front surface and the upper surface for maintenance and the like of the work, and a front door capable of opening and closing the front opening and a ceiling capable of opening and closing the upper opening A shutter is provided. The front opening is used by a worker to perform setup replacement and maintenance, and the upper opening is used to load and unload a workpiece by an overhead traveling loader or the like.

FIG. 6 is a plan view of the biaxial lathe 1 provided with a conventional cover 30 and FIG. 7 is a perspective view of the cover 30. As shown in FIG. The cover 30 has a front plate portion 31 covering the front side of the biaxial lathe 1 and an upper plate portion 32 covering the upper side, and the front plate portion 31 includes a front opening 33 and a pair of left and right for opening and closing the front opening 33. Front doors 34, 34 are provided. Further, an upper opening 35 is provided in the upper plate portion 32. 2 is a bed of the biaxial lathe 1; 3 is a partition plate which divides the processing areas 4 and 4 into right and left; and 5 and 5 are headstocks.
An upper door portion 36 having a notch 37 is integrally provided at an intermediate portion in the vertical direction on the back surface of each front door 34, and on the upper door portion 36, a ceiling shutter 38 is provided. The guide 40 and the guide 40 are provided slidably in the left and right directions. Further, an air cylinder 41 for sliding the ceiling shutter 38 on the upper door 36 is provided on the upper door 36 behind the rear guide 40.

Here, in the closed position of the front door 34, 34 closing the front opening 33, the notch 37 of the upper door portion 36 is located on the upper opening 35, and the upper opening is opened by the upper ceiling shutters 38, 38. The part 35 is closed. From here, when the front doors 34, 34 are slid to the open position where the front opening 33 is opened, the ceiling shutters 38, 38 on the upper door portion 36 are also moved integrally to the open position. Thus, with the front opening 33 and the upper opening 35 opened, as shown in FIG. 8, the operator M can perform setup replacement and maintenance. In FIG. 8, reference numeral 7 denotes a loader. When each air cylinder 41 is driven at the closed position of the front doors 34, 34, the ceiling shutters 38, 38 slide outward, and the notch 37 and its lower side upper Only the opening 35 can be opened.
In Patent Document 1, as in FIGS. 6 and 7, the upper door is integrally provided on the back of the front door and has an opening corresponding to the upper opening, which is located on the upper surface of the cover. An open / close structure is disclosed in which a ceiling shutter capable of opening and closing the opening and a drive device for the ceiling shutter are provided.

JP, 2014-233823, A

  In the conventional cover 30 described above, since the ceiling shutter 38, the front guide 39, the rear guide 40, and the air cylinder 41 are provided in the upper door portion 36 integral with the front door 34, the position and the area of the upper opening 35 When the slide strokes of the ceiling shutters 38 and 38 become large due to the above, as shown in FIGS. 6 and 7, the upper side door portion 36 is protruded outward, and the front side guide 39, the rear side guide 40, and the air cylinder 41 are made outward. It will need to be placed. For this reason, the width of the cover 30 itself is determined in consideration of the overhangs S, S of the upper door portions 36, 36 when the front doors 34, 34 are opened, and the machine width W also becomes large. The overall compactness will be hindered. As a result, the layout of the plant and the number of installed units are limited to affect the productivity.

  Therefore, the present invention can provide a machine tool cover and a machine tool capable of achieving compactness of the machine width without affecting maintenance work by opening and closing the front door and the ceiling shutter, etc., leading to improvement in productivity. Purpose.

In order to achieve the above object, the invention according to claim 1 covers a front side of a machine tool and has a front plate portion having a front opening, and an upper plate portion covering an upper side of the machine tool and having an upper opening. A cover for a machine tool in which a front door capable of opening and closing the front opening is attached to the front plate side, and a ceiling shutter capable of opening and closing the upper opening on the upper plate side.
The front door and the ceiling shutter are separately mounted so as to be able to open and close separately, and a front guide for guiding the opening and closing operation of the ceiling shutter on the front side is provided on the front door side, and a rear guide for guiding on the rear side And actuators for opening and closing the ceiling shutter are provided on the upper plate portion side.
The invention according to claim 2 is characterized in that, in the configuration according to claim 1, the front side guide is a rod-like body provided on the back side of the front door and on which the guided portion provided on the front end of the ceiling shutter is placed. Do.
In order to achieve the above object, the invention according to claim 3 is a machine tool, wherein at least the front side and the upper side are covered with the machine tool cover according to claim 1 or 2. .

According to the invention described in claims 1 and 3, the front door and the ceiling shutter are separately attached so as to be able to open and close separately, and the front guide guiding the opening and closing operation of the ceiling shutter on the front side is on the front door side The slide guide of the ceiling shutter is increased due to the position and the area of the upper opening, etc., because the rear guide guiding on the rear side and the actuator for opening and closing the ceiling shutter are respectively provided on the upper plate side. The arrangement can be coped with by changing the arrangement of the rear side guide and the actuator provided on the upper plate portion of the machine tool cover, and an outward projecting portion does not occur on the front door side. Therefore, the compactness of the machine width can be achieved without affecting the maintenance work by opening and closing the front door and the ceiling shutter, and improvement in productivity can be expected.
According to the second aspect of the invention, in addition to the above effects, the front side guide is a rod-like body provided on the back side of the front door and on which the guided portion provided on the front end of the ceiling shutter is placed Even if the front door and the ceiling shutter can be separately opened and closed, the guide on the front side of the ceiling shutter on the front door side can be maintained.

It is a top view of the biaxial lathe using the cover for machine tools (a front door and a ceiling shutter are closed positions). It is an exploded perspective view of a left half of a machine tool cover. It is a top view of the 2 axis lathe which used the cover for machine tools (a front door is a closed position, and a ceiling shutter is an open position). It is a top view of the biaxial lathe which used the cover for machine tools (a front door and a ceiling shutter are open positions). It is a top view of the 2 axis lathe which used the cover for machine tools (a front door is an open position, and a ceiling shutter is a closed position). It is a top view of the biaxial lathe using the conventional cover for machine tools (a front door and a ceiling shutter are open positions). It is a disassembled perspective view of the left half of the conventional machine tool cover. It is an explanatory view showing the work state of setup change etc.

Hereinafter, embodiments of the present invention will be described based on the drawings.
FIG. 1 is a plan view of a biaxial lathe 1 which is an example of a machine tool, on a bed 2, machining areas 4 and 4 (FIGS. 3 and 4) are respectively formed on the left and right by a central partition 3 A headstock 5 is provided in the area 4 respectively.
Further, a machine tool cover 10 is provided on the biaxial lathe 1. As shown in FIG. 2, the machine tool cover (hereinafter simply referred to as “cover” in the present embodiment) 10 also has a front plate 11 in the vertical direction that covers the front side of the biaxial lathe 1 and a horizontal that covers the upper side. In the front plate portion 11, a front opening portion 13 for opening the front surface of the processing area 4 is formed. On the upper plate portion 12, the upper surface of the processing area 4 is opened. An opening 14 is formed. The front opening 13 and the upper opening 14 are divided by the partition plate 3 into right and left.

On the front of the cover 10, front doors 15 and 15 capable of opening and closing the front opening 13 and ceiling shutters 16 and 16 capable of opening and closing the upper opening 14 are provided in pairs on the left and right sides of the partition plate 3 There is. In addition, since the structure is left-right symmetrical, it demonstrates centering on the front door 15 and ceiling shutter 16 of the left side of the cover 10 shown in FIG. However, in the drawings after FIG. 2 (including the conventional example), the rear portion of the bed extending rearward with respect to the cover is omitted, and only the planar view range of the cover is shown.
The front door 15 has a height projecting upward than the upper plate portion 12 of the cover 10, and has a width capable of closing the left half of the front opening 13 partitioned by the partition plate 3. The guide portion 6 provided on the front side of the bed 2 is slidable to the left and right along the front surface of the front plate portion 11. Windows 17 and 17 are provided at the top and bottom of the front door 15 for visually recognizing the processing area 4 from the outside.

  Further, on the back of the front door 15, a horizontally long plate-like support plate 18 located on the upper plate portion 12 is integrally protruded backward, and on the support plate 18, the front guide 19 is provided on the front door 15. Installed in parallel with The front guide 19 is a rod-like body having a length such that the left end protrudes slightly to the outside of the support 18, and an inclined surface 20 is formed on the right upper surface so that the upper and lower thickness decreases toward the right end. There is.

The ceiling shutter 16 has a rectangular shape in a plan view and has a size capable of closing the left half of the upper opening 14 partitioned by the partition plate 3 and rests on the front edge 19 provided on the front door 15 at the front edge A pair of left and right cam followers 21 and 21 are provided as guided portions. On the other hand, a pair of left and right support portions 22 and 22 is integrally protruded rearward at the end edge on the rear side.
Further, in the upper plate portion 12 of the cover 10, a rod-shaped rear side guide 23 is fixed to the upper plate portion 12 at both ends thereof through the support portions 22 and 22 of the ceiling shutter 16 behind the upper opening portion 14. Is supported in parallel with the front guide 19.
Accordingly, the front edge of the ceiling shutter 16 is guided by the front guide 19 via the cam followers 21 and 21 and the rear edge is guided by the rear guide 23 via the support portions 22 and 22. It is supported slidably in the direction.

  An air cylinder 24 as an actuator is fixed on the upper plate 12 and behind the rear guide 23 in parallel with the rear guide 23 in a sideways posture in which the piston rod 25 is directed to the left. The tip of the piston rod 25 is connected to a fixing plate 26 fixed on the supports 22, 22 of the ceiling shutter 16. Accordingly, the ceiling shutter 16 slides along with the expansion and contraction of the piston rod 25 of the air cylinder 24, and at the contracted position of the piston rod 25, it becomes a closed position closing the left half of the upper opening 14 as shown in FIG. In the extended position of the piston rod 25, as shown in FIG. 3, the left half of the upper opening 14 is opened.

In the cover 10 and the biaxial lathe 1 configured as described above, at the time of normal processing, as shown in FIG. 1, the front doors 15, 15 are slid to the closed position closing the half of the front opening 13 respectively. The piston rod 25 of each air cylinder 24 is contracted to slide the ceiling shutters 16, 16 into the closed position closing the half of the upper opening 14, respectively.
When the loader (not shown) is made to enter from the upper opening 14 to load and unload the work from here, as shown in FIG. 3, the piston rods 25 of each air cylinder 24 are extended to open the ceiling shutters 16 and 16 respectively. Can slide the upper opening 14. Therefore, the work can be taken in and out from the upper opening 14.
Even when only the ceiling shutters 16 and 16 slide to the open position with the front doors 15 and 15 closed, the cam followers 21 and 21 of the ceiling shutters 16 are mounted on the front guides 19 of the front doors 15. The length of the front guide 19 and the positions of the cam followers 21 and 21 are set so as to be maintained.

Then, when the operator performs setup replacement or maintenance from the front opening 13, as shown in FIG. 4, if the front doors 15, 15 are slid to the open position together with the ceiling shutters 16, 16, the upper opening The front opening 13 can also be opened with the part 14. Therefore, as shown in FIG. 8, setup change etc. can be performed by the worker M.
In the open position of the front door 15, the end of the front guide 19 is slightly protruded to the outside of each front door 15. Therefore, the left and right ends of the cover 10 can be shortened to the vicinity thereof. Therefore, the machine width W can be made into a compact size close to the outside of the front doors 15, 15.

  On the other hand, here, since the front door 15 and the ceiling shutter 16 can be opened and closed separately from each other, as shown in FIG. 5, only the front doors 15 and 15 are kept with the ceiling shutters 16 and 16 kept in the closed position respectively. Each can be slid to the open position to open only the front opening 13. At this time, the front guides 19 slide outward integrally with the front doors 15 so as to separate from the cam followers 21 and 21 of the ceiling shutter 16. However, when the front door 15 slides to the closed position (or when the ceiling shutter 16 slides to the open position), the cam followers 21 and 21 ride on the inclined surface 20 of the front guide 19, so It can be returned onto the front side guide 19.

  As described above, according to the cover 10 and the biaxial lathe 1 of the above embodiment, the front door 15 and the ceiling shutter 16 are attached separately so as to be able to open and close, and the opening and closing operation of the ceiling shutter 16 is front side A front guide 19 for guiding at the front door 15 side is provided, and a rear side guide 23 for guiding at the rear side and an air cylinder 24 for opening and closing the ceiling shutter 16 are respectively provided at the upper plate portion 12 side Therefore, even if the slide stroke of the ceiling shutter 16 is increased due to the position, area, etc. of the upper opening 14, the arrangement of the rear guide 23 and the air cylinder 24 provided on the upper plate 12 of the cover 10 is changed. It can be coped with and there is no protrusion on the front door 15 side. Therefore, the compactness of the machine width W can be achieved without affecting the maintenance work and the like by the opening and closing of the front door 15 and the ceiling shutter 16, and improvement in productivity can be expected.

  In particular, here, since the front guide 19 is a rod-like body provided on the back side of the front door 15 and on which the cam followers 21 and 21 provided on the front end of the ceiling shutter 16 are mounted, the front door 15 and the ceiling shutter 16 are separately provided. Even if it can be opened and closed by the body, the guide on the front side of the ceiling shutter 16 on the front door 15 side can be maintained.

The actuator for opening and closing the ceiling shutter is not limited to the air cylinder, but may be a hydraulic cylinder, a ball screw, a rodless cylinder, or the like.
Also, the guide structure before and after the ceiling shutter is not limited to the above, and the number of cam followers is increased on the front side, and the front guide is a long slot or long hole in which the projection provided on the front end of the ceiling shutter fits. It is possible to change as appropriate.
Furthermore, although the above embodiment is an example provided with a pair of left and right front doors and a ceiling shutter, the present invention is also applicable to a cover provided with one front door and one ceiling shutter. There may be a cover provided with a side plate portion and the like in addition to the front plate portion and the upper plate portion. Therefore, the machine tool is not limited to the two-axis lathe.

  1 ·· Two-axis lathe, 2 ··· Bed, 3 ··· Partition plate, 4 ··· Machining area, 5 ·· Headstock, 6 ·· Guide section, 7 · Loader, 10 ··· Machine tool cover, 11 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Front door, 16 · · · · · · · · · · · · · · · · · · · · · · · · 20: inclined surface 21: cam follower 22: support portion 23: rear side guide 24: air cylinder 25: piston rod 26: fixed plate W: mechanical width.

Claims (3)

At least a front plate portion covering the front side of the machine tool and having a front opening portion, and an upper plate portion covering the upper side of the machine tool and having an upper opening portion, and the front opening portion on the front plate portion side The front cover which can be opened and closed is a cover for a machine tool in which a ceiling shutter capable of opening and closing the upper opening is attached to the upper plate portion side,
The front door and the ceiling shutter are separately mounted so as to be able to open and close separately, and a front guide for guiding the opening and closing operation of the ceiling shutter on the front side is provided on the front door side, and the guide on the rear side A cover for a machine tool, wherein a rear side guide and an actuator for opening and closing the ceiling shutter are respectively provided on the upper plate portion side.   The cover for a machine tool according to claim 1, wherein the front guide is a rod-like body provided on the back side of the front door and on which a guided portion provided on the front end of the ceiling shutter is placed.   A machine tool comprising at least a front side and an upper side covered with the machine tool cover according to claim 1 or 2.

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