JPH0520852U - Shatterproof cover for portal machine tools - Google Patents

Abstract

(57) [Abstract] [Purpose] In a gate-shaped machine tool, it is possible to follow the movement of the spindle head provided on the cross rail via the saddle, and to enclose the entire machining space. Provide a protective cover. [Structure] A cross rail 202 is laid across columns 201 on both sides of a bed 200, and a front moving cover 10 which is movable in the moving direction of the table is provided in front of the cross rail 202. The front of the bed 200 is provided with a front end fixing cover 30 surrounding the front end of the table, and the rear of the bed 200 is
A rear end fixed cover (40) surrounding the rear end of the table is provided. The cross rail 202 is provided with a horizontal movement cover 100 capable of following the movement of the saddle 203 supporting the spindle head 204, and these constitute the shatterproof cover 1 of the portal machine tool that surrounds the entire machining space above the table. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a shatterproof cover for a portal machine tool that surrounds the entire machining space of the portal machine tool.

[0002]

[Background technology]

 In order to meet the recent demands for high-mix low-volume production, improving the operating rate, and shortening the setup time, etc., a cross-rail is laid over a gate-type machine tool, that is, a column, and this cross-rail is connected via a saddle. A gate-shaped machine tool, in which the spindle head is movable along the cross rail (Y-axis direction), has come into wide use. However, these gate-shaped machine tools only perform cutting, so they did not have a cover for surrounding the entire table to prevent scattering.

[0003]

[Problems to be solved by the device]

 In addition, in order to make metal processing more complex and more efficient, it was necessary to develop machine tools capable of grinding as well as cutting. In such a machine tool, the rotation speed of the main spindle capable of performing grinding, such as plano mirror and gantry mirror, is higher than that of cutting, for example, 30,000 to 50,000 rotations per minute. In this case, the scattering of grinding fluid and chips is a big problem.

In such a gate-shaped machine tool, since the spindle head provided on the cross rail via the saddle moves in the Y-axis direction, it is difficult to surround the entire area in which the spindle head moves. .. Therefore, it is desired to develop a shatterproof cover for a gate-shaped machine tool that can follow the spindle head that moves in the Y-axis direction via a saddle and can surround the entire machining space.

An object of the present invention is to follow the movement of a spindle head provided on a cross rail via a saddle in a gate-shaped machine tool, and enclose the entire machining space. (EN) Provided is a gate-shaped machine tool shatterproof cover.

[0006]

[Means for Solving the Problems]

 In the first aspect of the present invention, a cross rail is bridged between two columns erected on both sides of the bed, and a spindle head that rotatably supports the spindle is moved to the cross rail via a saddle. In a scatter prevention cover of a gate-shaped machine tool that is freely installed and is installed in a gate-shaped machine tool configured to traverse the table on the bed and that prevents chips and abrasives from scattering. And a substantially tunnel-shaped front moving cover that is movable in the moving direction of the table and that surrounds the processing space above the table, and the front moving cover that is fixed on the bed. A front end fixing cover that is inscribed in and surrounds the front end of the table, a rear end fixing cover that is fixed on the bed and surrounds the rear end of the table, and the front moving cover. It is equipped with a telescopic horizontal moving cover that is capable of expanding and contracting in the horizontal direction following the movement of the spindle head along the entire length of the cross rail. A shatterproof cover for the gate-shaped machine tool that surrounds the machine was constructed.

According to a second aspect of the present invention, a cross rail is bridged between two columns erected on both sides of the bed, and a saddle head for rotatably supporting the main spindle is saddle-mounted on the cross rail. In the scattering prevention cover of the gate type machine tool, which is movably provided through the table and is provided in the gate type machine tool configured to traverse the table on the bed, and which prevents scattering of chips and abrasives. The horizontal movement cover provided on the portal machine tool and moving together with the spindle head includes fixed brackets fixed to both ends of the cross rail, a frame type frame fixed to the fixing brackets, and the frame type frame. A fixed cover that is provided inside and has a flat portion that is substantially parallel to the moving direction of the spindle head, and that has an opening through which the spindle head can pass in the vertical direction; A part of the peripheral edge of the portal machine tool is movably supported by the frame, and a plurality of slide covers formed in a similar cross-sectional shape to the fixed cover and connected to each other in a telescopic manner are provided. Configured a shatterproof cover.

According to a third aspect of the present invention, the lower end portion of the horizontal movement cover is used to move the saddle that supports the spindle head, and the lubricating oil that leaks during the movement is collected to collect oil tanks and the like. It is preferable that a lubricating oil processing means that circulates in the inside is provided.

[0009]

[Action]

 According to the first aspect of the present invention as described above, the front end portion of the table is surrounded by the front end fixing cover, and the front end fixing cover and the cross rail are surrounded by each other when performing various kinds of processing with various tools attached to the spindle. Is surrounded by a front moving cover. The rear end of the table is surrounded by the rear end fixed cover. Furthermore, the vicinity of the spindle head is surrounded by a horizontal moving cover.

As described above, since all the processing spaces on the table can be surrounded by the respective covers, the shatterproof cover according to the first aspect of the present invention has the cross rail and the spindle head through the saddle. It can also be used in a gate-shaped machine tool that is movable in the Y-axis direction along its cross rail and is capable of combined machining such as cutting and grinding.

Further, according to the second aspect of the present invention, the horizontal movement cover follows the movement of the spindle head during various types of machining with various tools mounted on the spindle. That is, the fixed cover is supported by the fixed bracket attached to the cross rail, and the fixed cover follows the movement of the spindle head supported by the saddle in the frame frame. At the same time, multiple slide covers also slide along the fixed cover in the frame.

As described above, since the shatterproof cover according to the second aspect of the present invention can follow the spindle head that moves during processing, it can surround the processing space on the table and perform cutting processing and grinding processing. It can also be used in a gate-shaped machine tool capable of complex machining such as.

Further, in the third aspect of the present invention, the lubricating oil that is used for horizontal movement of the spindle head supported by the saddle and leaks during the movement is the lubricating oil provided at the lower end of the horizontal movement cover. It is processed by the processing means.

[0014]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show an overall view of a plano mirror M which is a gate-shaped machine tool using the shatterproof cover 1 of the gate-shaped machine tool of this embodiment. With reference to these figures, the entire machine tool M will be described first.

In FIGS. 1 to 3, two columns 201 are erected on both sides of a bed 200, and a cross rail 202 is horizontally (Y-axis direction) bridged above the columns 201. The column 201 and the cross rail 202 form a gate shape. A saddle 203 is provided on the cross rail 202, and the saddle 203 is movable along the cross rail 202 in the Y-axis direction. The saddle 203 is provided with a spindle head 204 for rotatably supporting a spindle 208 so as to be vertically movable (Z axis direction). Further, the saddle 203 is provided with a rectangular tubular saddle cover 250, and a head cover 251 for protecting the spindle head 204 is provided in the saddle cover 250 so as to be vertically movable.

A table 205 is provided on the bed 200, and the table 205 is movable in a horizontal direction (X-axis direction) orthogonal to the Y-axis direction. Further, the machine tool M includes a tool magazine (not shown) and an automatic tool changer (ATC), and various cutting tools, grinding tools, etc. are stored in the tool magazine. As described above, the machine tool M is a gate-shaped compound machine tool capable of grinding as well as cutting. Then, between the tool magazine and the spindle 208, the tool corresponding to the machining is exchanged by the ATC. Here, in FIG. 2 showing the overall side view of the machine tool M, the left side is the front side and the right side is the rear side.

A front moving cover 10 is provided in front of the cross rail 202 of the gate-shaped machine tool M as shown in FIGS. The front moving cover 10 is provided with a cover 10A having a substantially home-base tunnel shape whose cross section along the Y-axis direction is open at the bottom. The cover 10A is movable in the X-axis direction. It is said that. Although this cover 10A is made of a thin iron plate, etc., it is appropriately reinforced over almost the entire circumference and has the same strength as the splash guard generally used in machine tools. Has been done.

Further, as shown in FIG. 4, a splash proof 12A is attached at an appropriate position inside the cover 10A so as to prevent the cutting chips, cutting agents and the like during processing from scattering to the outside of the machine M. ing.

As shown in FIG. 2, grips 13 are attached to the side surfaces of the cover 10A at predetermined positions before and after the cover 10A in the moving direction (X-axis direction). You can grab it and open and close it appropriately. At this time, the operator removes the locking mechanism (not shown) to open the cover 10A, and when the cover 10A is closed, the worker is fixed by the locking mechanism. Further, on the side surface of the cover 10A, a window 14 is formed of, for example, polycarbonate or the like, and the working state of the work on the table 205 can be seen from there as appropriate.

As shown in FIG. 4, on both side surfaces of the lower portion of the cover 10A, a cover plate 15 attached to both side surfaces of the lower portion of the cover 10A, an attachment plate 16, an intermediate plate 17 sandwiched therebetween, the attachment A guide mechanism 20 including guide rollers 18 and rollers 19 mounted above and below the plate 16 is provided.

On the other hand, on both outer side surfaces of the bed 200 along the X-axis direction, as shown in FIGS. A predetermined size is extended from the front end of the pad 200 to the front side. At this time, the rail 22 is positioned and fixed so that its upper and lower sides are engaged with the guide roller 18 and the roller 19, respectively. In this way, the front moving cover 10 is movable on the rail mechanism 23 via the guide mechanism 20. Then, here, the front moving cover 10 is constituted by the cover 10A, the guide mechanism 20, the rail mechanism 23, and the like.

As shown in FIGS. 2 and 4, the front end of the bed 200 is provided with a front end fixing cover 30 that surrounds the front end of the table 205. The front end fixed cover 30 has a fixed cover 30A, and the fixed cover 30A has a cross section along the Y-axis direction that is substantially the same as the home base shape of the front moving cover 10 and has a rear side surface. Is formed into a substantially box shape that has been released. The front end fixed cover 30 is in contact with the inner surface of the cover 10A of the front movable cover 10 in a nested manner.

Although the cover 30A is made of a thin iron plate or the like, it is appropriately reinforced over substantially the entire circumference and has a structure similar to a splash guard or the like generally used in machine tools and the like. Has been done. Further, windows 32 are formed on the both side surfaces, the front end surface, and the upper surface of the cover 30A along the X-axis direction by using, for example, polycarbonate or the like so that the working state of the work on the table can be appropriately seen. There is.

As shown in FIG. 4, a bracket 33 is attached to the lower inclined side surface of the fixed cover 30A. The bracket 33 is fixed to the bed 200 via the base 34, and the cover 30A is fixed to the bracket 33. Further, the lower portion of the cover 30A is in contact with the bed 200 at a position not shown and is attached and fixed by a bolt (not shown) or the like. Furthermore, in order to prevent chips, cutting agents and the like during processing from scattering outside the machine M, a splash avoiding unit 35A is appropriately attached at an appropriate position inside the fixed cover 30A. Here, the fixed cover 30A, the bracket 33, the base 34, and the like constitute the front fixed cover 30.

As shown in FIG. 2, a rear end fixing cover 40 that surrounds the rear end of the table 205 is provided on the rear side of the bed 200. The rear end fixed cover 40 includes a cover 40A, and the cover 40A is formed in a rectangular box shape with its lower portion and front side opened. The lower part is attached and fixed to the upper surface of the bed 200, and the both side faces along the Y-axis direction are attached and fixed to the side faces of the two columns 201 by bolts or the like not shown.

The cover 40A is also made of a thin iron plate or the like like the covers 10A and 30A. Further, the cover 40A is also appropriately reinforced with a square pipe shape over substantially the entire circumference, and has a structure similar to that of a splash guard generally used in machine tools and the like. Further, a door 41 is provided on the rear end surface of the cover 40A. Here, the cover 40A, the door 41 and the like constitute the rear end fixed cover 40.

As shown in FIGS. 1 to 3, a horizontal moving cover 100 is provided near the cross rail 202. The horizontal movement cover 100 encloses and seals the upper portion of the spindle head 204 that moves along the entire length of the cross rail 202.

As shown in FIGS. 5 to 7, the horizontal movement cover 100 includes a support member 109 which is a fixed bracket. The support member 109 has a rib 109A that comes into contact with the mounting plates 202A on both end surfaces of the cross rail 202 in the Y-axis direction, and is formed by bending the rib 109A into a substantially L-shaped cross section. As shown in FIG. 7, such a support member 109 has a substantially right-angled triangle shape with a long bottom portion when viewed from the side, and a rib 109A at a portion corresponding to the height of the triangle is mounted on the mounting plate 202A by a bolt. It is attached with 11 1. The tip of the support member 109A is bent downward from the hypotenuse, and the frame 106, which is a frame-type frame, is attached to this tip.

The frame 106 is composed of a front frame 107 (left side in FIG. 7) and side frames 108 provided at both ends of the front frame 107 in the Y-axis direction. As shown in detail in FIGS. 7 and 8, the front frame 107 has a rising portion corresponding to the tip of the support member 109 and is formed by sheet metal working into a substantially L-shaped section and extending in the Y-axis direction. The cross rail 202 is formed to have almost the entire length.

Further, as shown in FIGS. 5, 6 and 9, the side frame 108 has a horizontal portion having a predetermined length in the Y-axis direction, and has a substantially L-shaped cross section along the same direction. The rising portion of the substantially L-shape is the edge portion 108A. The height of the edge portion 108A is substantially the same as the rising portion of the front frame 107.

Further, the side surface frame 108 has an edge portion 108B which is continuous with the edge portion 108A on the front side and is orthogonal to the edge portion 108A. The edge portion 108B is fixed to the rising portion of the front surface frame 107. As shown in FIGS. 8 and 9, a part of the horizontal portion of the side frame 108 is fixed to the horizontal portion of the front frame 107 and has a shape extending rearward from the horizontal portion of the frame 107. There is. The cross-sectional shape of the side frame 108 is bent at a substantially right angle downward from the end of the horizontal part formed to the depth dimension of the saddle cover 250, passes through the vertical part of the predetermined size, and from there to the horizontal part to the rear side. It has a substantially crank shape that is formed by bending it.

A fixed cover 113 and a slide cover 112 are provided in the frame 106 so as to be slidable in the Y-axis direction. The fixed cover 113 has a horizontal surface as shown in FIGS. 5 and 6, and both edges orthogonal to the Y-axis direction and edge portions 113A and 113B are continuously formed on the front side. It has a relatively large area. Further, as shown in FIG. 6, an opening 113C into which the saddle cover 250 is inserted is formed in the central portion thereof.

A part of the fixed cover 113 is connected to the saddle cover 250. That is, as shown in detail in FIG. 10, around the opening 113C opened in the fixed cover 113, a bracket 117 bent into an L-shaped cross section is attached with a screw 119 or the like via the mounting plate 120. At the same time, it is fixed to the side surface of the saddle cover 250 with screws 119 or the like via the mounting plate 118.

As shown in FIGS. 5, 6 and 9, slide covers 112 are provided on both sides of the fixed cover 113 in the Y-axis direction with respect to the fixed cover 113. That is, the slide cover 112 includes a pair of first slide covers 114 symmetrically provided on both sides of the fixed cover 113, and a pair of second slide covers 115 provided on both sides of the first slide cover 114. , A pair of third slide covers 116 provided on both sides of the second slide cover 115, and the third slide cover 116 is slidably mounted on the side cover 108. There is.

That is, as shown in FIGS. 5, 6, 8 and 9, each slide cover 114 etc. has a horizontal portion parallel to the horizontal portion of the side frame, and in front of this horizontal portion, the front surface is Rising edges 114B, 115B and 116B parallel to the rising portion of the frame 107 are formed. Further, edge portions 114A, 115A, 116A continuous with the edge portions 114B, 115B, 166B are formed at both ends of the slide cover 114 and the like in the Y-axis direction. The cross-sectional shape of the slide cover 114 and the like is substantially the same as that of the side frame 108 described above, that is, it is bent at a substantially right angle downward from the end of the horizontal portion formed to the depth dimension of the saddle cover 250, and the predetermined shape is obtained. It has a substantially crank shape that passes through the vertical portion of the dimension and is then bent horizontally to the rear side.

In each slide cover having such a shape, the third slide cover 116 is placed on the side frame 108, and the second slide cover 115 is placed on the third slide cover 116. A first cover 114 and a fixed cover 113 are telescopically and slidably coupled to the first cover 114 and the first cover 114, respectively.

Therefore, the saddle 203, that is, the saddle cover 250 moves in the Y-axis direction, and the plurality of slide covers 114 and the like move in the Y-axis direction accordingly, so that the slides on either side of the saddle cover 250 are slid. Even if the cover 114 and the like move to the maximum in either direction, the respective ends of the fully extended cover are overlapped with each other with a predetermined size.

As shown in FIGS. 5 and 6, the fixed cover 113 and the first to third slide covers 114, 115 and 116 respectively have edge portions 113A, 114A, 115A and 116A which are orthogonal to the Y-axis direction. The stopper 121 is attached. The stopper 121 is formed of an elastic material such as rubber, and is attached by sandwiching the edge 113A and the like. Although not shown, stoppers are also attached to the edges 113B, 114B, 115B and 116B of the covers 113 to 116 to prevent rattling in the X-axis direction.

As shown in FIGS. 7 and 10, a roller 122 that engages with the lower surface of the front frame 107 is attached to the saddle cover 250. The rollers 122 support the fixed cover 113 and the like so that they can smoothly move in the Y-axis direction by following the movement of the saddle 203, and are provided to prevent the entire horizontal movement cover 100 from bending. is there.

That is, as shown in detail in FIG. 10, the bracket 123, which is bent to have an L-shaped cross section, is attached to the saddle cover 250 via the attachment plate 124 with the bolt 125. A side wall U-shaped support 126 is fixed to the bracket 123, and a shaft 127 is provided on the support 126 so as to be orthogonal to the Y-axis direction.

A roller 122 is brought into contact with the lower surface of the front frame 107 via a bearing 128 on the shaft 127, and a fixed cover 113 and the like follow the movement of the saddle 203 to smoothly move in the Y-axis direction. In addition, the horizontal movement cover 100 supports the substantially central portion of the whole.

Lubricating oil processing means 128 is provided in such a horizontal movement cover 100. In this lubricating oil processing means 128, when the spindle head 204 provided on the cross rail 202 via the saddle 203 moves in the Y-axis direction, the lubricating oil used for the slide guide, ball screw, etc. not shown flows out. It is for processing things and is provided under the slide cover 112 and the like.

That is, as shown in FIGS. 5 and 8, the lubricating oil processing means 128 includes a trough-shaped member 129 for collecting the leaked oil, a drain collection port 133 for collecting the collected oil, and a pipe 134. Is configured. The gutter-shaped member 129 has edge portions 129A that rise up on both sides along the Y-axis direction, and square and triangular reinforcements 130 and 131 are provided on both lower sides of the edge portion 129A. A trough 129B is formed between the reinforcements 130 and 131. As shown in FIGS. 5 and 7, both ends of the gutter-shaped member 129 are closed by end plates 132, and a drain extraction port 133 connected to a pipe 134 is fixed to one end side thereof.

The gutter-shaped member 129 is supported by the bracket 135 as shown in FIG. The bracket 135 has a substantially L-shaped cross section having a flange portion 135A which stands up from a horizontal plane which supports the lower surface of the trough-shaped member 129 and is further horizontally formed from the horizontal plane. The bracket 135 is attached to the cross rail 202 with bolts 138 with its flange portion 135A abutting against the lower surface of the cross rail 202.

Here, the gutter-shaped member 129, the drain extraction port 133, the pipe 134, the bracket 135 and the like constitute the lubricating oil processing means 128.

In this embodiment, when the front moving cover 10 moves to the cross rail 202 side, the side cover 50 covers a slight gap generated between the moving cover 10 and the column 201. That is, as shown in FIGS. 1 and 7, a part of the side cover 50 is fixed to the column 201, and an upper part thereof is in contact with the horizontal movement cover 100 in a telescopic manner. Further, one side is in contact with the front moving cover 10 in a telescopic manner, whereby the gap between the moving cover 10 and the column 201 can be almost completely sealed.

Here, the scattering prevention cover 1 for the portal machine tool is configured by including the front moving cover 10, the front fixed cover 30, the rear fixed cover 40, the horizontal moving cover 100, the side cover 50, and the like. ..

Next, the operation of this embodiment will be described. A cutting tool or a grinding tool stored in the tool magazine is appropriately selected, and the tool is inserted into the spindle 208 by the ATC. Prior to processing, the front end moving cover 10 is opened by an operator and a work is mounted on the table 205. When the attachment of the work is completed, the worker closes the front end moving cover 10 and fixes the moving cover 10 by the locking mechanism. Here, the front end of the table is surrounded by the front end fixing cover, and the rear end of the table is surrounded by the rear end fixing cover.

During machining, the saddle 203 supporting the spindle head 204 moves in the Y-axis direction, the spindle head 204 moves in the Z-axis direction, and the table 205 moves in the X-axis direction. The fixed cover 113 first follows the movement of the saddle 203 supporting the spindle head 204 in the Y-axis direction via the saddle cover 250.

The slide cover 112 moves as the fixed cover 113 moves. At this time, since the frame 106 is fixed to the cross rail 202 via the support 109, only the fixed cover 113 and the slide cover 112 move. Further, the fixed cover 113 moves smoothly because its lower surface is supported by the rollers 122 via the front frame 107.

Lubricating oil used for the sliding surface of the saddle 203 supporting the spindle head 204 and the ball screw for feeding is collected in the gutter groove 129 B of the gutter-shaped member 129 and taken from the gutter groove 129 B. It is circulated to an oil tank or the like through a port 133 and a pipe 134.

According to this embodiment as described above, there are the following effects. That is, according to the scattering prevention cover 1 of the portal machine tool of the present embodiment, the machining space above the table 205 of the machine tool M is provided with the front moving cover 10, the front end fixing cover 30, the rear end fixing cover 40, It can be surrounded almost completely by the horizontal movement cover 100 and the side cover 50. Therefore, even in a portal machine tool having the spindle head 204 supported by the saddle 203 which moves in the Y-axis direction along the cross rail 202, it can be used as the effective shatterproof cover 1.

Further, since the fixed cover 113 of the horizontal movement cover 100 is connected to the saddle 203 via the saddle cover 250, and the slide cover 112 is telescopically connected to the fixed cover 113, It is possible to follow the movement of the spindle head 204 supported by the saddle 203 in the Y-axis direction. Therefore, even a machine tool having a cross rail 202 or the like in a gate shape and having a spindle head 204 supported by a saddle movable along the cross rail 202 in the Y-axis direction scatters chips and the like. It is possible to enclose the upper part of the processing space without doing so.

Further, when the horizontally movable cover 100 is moved, the roller 122 is in contact with the lower surface of the cover 100, so that the roller 122 can be moved smoothly, and the roller 122 is at the center of the entire horizontally movable cover 100. Since it supports the parts, the entire cover 100 does not bend.

Further, the horizontal movement cover 100 is provided with a lubricating oil processing means 128, and by this processing means 128, the sliding surface of the saddle 203 supporting the spindle head 204 moving in the Y-axis direction along the cross rail 202. We are processing the lubricating oil used for the ball screw for feed. Therefore, those lubricating oils do not drip into the machining area near the spindle head 204.

It should be noted that the present invention is not limited to the above-described embodiments, but includes the following modifications and the like.

That is, in the above-described embodiment, the portal machine tool M is described as a planomira, and the scattering prevention cover 1 is used for the machine tool M. However, the present invention is not limited to this, and for example, the portal machine tool M. May be gantry mira.

In addition, the specific structure, shape, and the like when implementing the present invention may be other structures and the like as long as the object of the present invention can be achieved.

[0059]

[Effect of the device]

 As described above, according to the shatterproof cover of the portal machine tool of the first invention, the upper part of the table of the machine tool is surrounded by the front moving cover, the front end fixing cover and the rear end fixing cover. The vicinity of the spindle head is surrounded by a horizontal movement cover. In this way, since the entire machining space on the table can be surrounded by each cover, in a portal machine tool equipped with a cross rail and a spindle head supported by a saddle that moves along the cross rail. The effect is that the entire processing space can be enclosed. Further, according to the scattering prevention cover of the portal machine tool of the second invention, it is possible to follow the movement of the spindle head provided via the saddle, so that the machining space on the table can be enclosed. Also, it has an effect that it can be used in a gate-shaped machine tool capable of combined machining such as cutting and grinding. Further, according to the scattering prevention cover of the portal machine tool of the third aspect of the present invention, the lubricating oil that is used for moving the saddle that supports the spindle head and leaks during the movement is processed by the lubricating oil processing means. The leaked lubricating oil will not drip into the machining area near the spindle head.

[Brief description of drawings]

FIG. 1 is an overall front view of a portal machine tool that uses a shatterproof cover for a portal machine tool according to an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is an overall plan view of the same.

FIG. 4 is a detailed view of a lower cross section of the front moving cover and the front end fixed cover.

FIG. 5 is a partially sectional front view of the horizontal movement cover.

FIG. 6 is a plan view of a horizontal movement cover.

FIG. 7 is a right side view of the same.

8 is a sectional view taken along line XIII-XIII in FIG.

FIG. 9 is a perspective view of a main part of the horizontal movement cover.

FIG. 10 is a diagram showing a mounting state of the slide cover, the saddle cover and the roller.

[Explanation of symbols]

 1 Scatter prevention cover for portal machine tool 10 Front moving cover 30 Front end fixing cover 40 Rear end fixing cover 50 Side cover 100 Horizontal moving cover 200 Bed 202 Cross rail 203 Saddle 250 Saddle cover M Portal machine tool

Claims (3)

[Scope of utility model registration request] 1. A cross rail is bridged between two columns erected on both sides of a bed, and a spindle head for rotatably supporting a spindle is movably provided on the cross rail via a saddle. Provided in a portal machine tool configured to traverse the table on the bed, in a scattering prevention cover of the portal machine tool to prevent scattering of chips and abrasives, provided in the front of the cross rail, A substantially tunnel-shaped front moving cover that is movable in the moving direction of the table and surrounds the processing space above the table, and is fixed on the bed, and contacts the front moving cover in a nested manner. With a front end fixing cover surrounding the front end of the table, and fixed on the bed,
A rear end fixing cover surrounding the rear end of the table,
And a telescopic horizontal movable cover that is capable of abutting on the front movable cover and that is capable of expanding and contracting in the horizontal direction along with the movement of the spindle head along the entire length of the cross rail. A shatterproof cover for gate-shaped machine tools, characterized by enclosing the entire processing space above the table. 2. A cross rail is bridged between two columns erected on both sides of a bed, and a spindle head for rotatably supporting a spindle is movably provided on the cross rail via a saddle. A scatter preventive cover for a gate-shaped machine tool, which is installed in a gate-shaped machine tool configured so that a table traverses on a bed and prevents scattering of chips, abrasives, etc. The horizontal movement cover that moves together with the saddle that supports the head is provided with fixed brackets fixed to both ends of the cross rail, a frame type frame fixed to the fixed brackets, and the frame type frame. A fixed cover having a flat portion substantially parallel to the moving direction of the spindle head and provided with an opening through which the spindle head can pass in the vertical direction; and a part of the peripheral edge portion transferred to the frame-shaped frame. Scattering of a gate-shaped machine tool, which is movably supported and comprises a plurality of slide covers which are formed in a similar sectional shape to the fixed cover and are telescopically coupled to each other. Preventive cover. 3. The horizontal movement cover is provided at its lower end with a lubricating oil processing means used for moving a saddle for supporting the spindle head, collecting lubricating oil leaking during the movement, and circulating the lubricating oil in an oil tank or the like. Claim 1, characterized in that
Scatter prevention cover for the gate type machine tool described in 2.