US20030183635A1 - Sealing structure - Google Patents
Sealing structure Download PDFInfo
- Publication number
- US20030183635A1 US20030183635A1 US10/392,974 US39297403A US2003183635A1 US 20030183635 A1 US20030183635 A1 US 20030183635A1 US 39297403 A US39297403 A US 39297403A US 2003183635 A1 US2003183635 A1 US 2003183635A1
- Authority
- US
- United States
- Prior art keywords
- cover
- sealing structure
- column
- seal member
- inspection window
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000007789 sealing Methods 0.000 title claims description 27
- 238000007689 inspection Methods 0.000 claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000003754 machining Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/08—Protective coverings for parts of machine tools; Splash guards
- B23Q11/085—Flexible coverings, e.g. coiled-up belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/08—Protective coverings for parts of machine tools; Splash guards
- B23Q11/0825—Relatively slidable coverings, e.g. telescopic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/30392—Milling with means to protect operative or machine [e.g., guard, safety device, etc.]
Definitions
- the present invention relates to a sealing structure for closing a gap defined between a surface of an object and a member movable on the surface of the object by a seal member attached to the movable member in sliding contact with the surface of the object.
- a machine tool including a plurality of members movable in different directions generally includes various covers which are provided to isolate guide ways for guiding the respective movable members and ball threads for driving the respective movable members from a machining region for protection of these members from chips and the like.
- Some of these covers are provided in relatively movable manner, so that a gap is defined therebetween. Therefore, a sealing structure for closing a gap defined between two associated covers is employed which includes a seal member (e.g., a lip seal) attached to one of the covers in sliding contact with a surface of the other cover.
- the cover is too large to be formed of a single steel plate or the like, the cover is formed by combining a plurality of steel plates with each other with their opposed end faces abutting against each other. In this case, a thin abutment groove is present in the large cover along a juncture between the steel plates.
- a sealing structure comprising: an object having a surface having a thin groove; a member movable on the surface of the object with a gap defined between the movable member and the surface of the object; and a seal member attached to the movable member and having a flexible edge portion kept in sliding contact with the surface of the object for closing the gap by the flexible edge portion; wherein the seal member, which is moved in sliding contact with the surface of the object as the movable member is moved, is disposed as intersecting the thin groove present in the surface of the object.
- the seal member moved in sliding contact with the surface of the object is disposed as intersecting the thin groove present in the surface of the object as described above. Hence, there is no possibility that the edge portion of the seal member enters the thin groove when the seal member passes over the thin groove present in the surface of the object. With this sealing structure, the breakage or deformation of the seal member can assuredly be prevented, leading to more reliable sealing performance.
- the present invention may be embodied as a sealing structure for a machine tool, which comprises a saddle movable laterally on a bed, a column movable back and forth on the saddle, a front cover attached to the column as covering a front surface of the column, a side cover having a surface having a thin groove and provided upright on the saddle along a direction of movement of the column with a gap defined between the side cover and a side edge of the front cover, and a seal member attached to the front cover and having a flexible edge portion kept in sliding contact with the surface of the side cover for closing the gap by the flexible edge portion.
- the seal member which is moved in sliding contact with the surface of the side cover as the column is moved, is disposed as intersecting the thin groove present in the surface of the side cover.
- FIG. 1 is a perspective view illustrating a vertical machining center which employs a sealing structure according to the present invention
- FIG. 2 is a front view illustrating the vertical machining center
- FIG. 3 is a schematic side view illustrating a positional relationship between side covers and a front cover in the vertical machining center;
- FIG. 4 is a schematic plan view illustrating the positional relationship between the side covers and the front cover in the vertical machining center;
- FIG. 5 is a schematic front view illustrating the positional relationship between the side covers and the front cover in the vertical machining center
- FIGS. 6A to 6 C are perspective views illustrating the movement of the front cover relative to the side covers in the vertical machining center;
- FIG. 7 is a partially enlarged perspective view illustrating a seal member attached to the front cover
- FIG. 8 is a diagram illustrating a positional relationship between the seal member and an inspection window provided in the side cover, which is observed when the seal member passes over the inspection window;
- FIG. 9 is a diagram for explaining a problem associated with a prior art sealing structure.
- FIGS. 1 to 5 illustrate a vertical machining center 1 which employs a sealing structure according to the present invention.
- the vertical machining center 1 includes a table 12 fixed to a front portion of a bed 11 , a saddle 13 movable laterally of the table 12 (along an X-axis) on guide ways 11 a provided on a rear portion of the bed 11 , a column 14 movable back and forth (along a Y-axis) on guide ways 13 a provided on an upper surface of the saddle 13 , and a spindle head 15 movable up and down (along a Z-axis) on guide ways 14 a provided on a front surface of the column 14 .
- the spindle head 15 is covered with a head cover 21 .
- a pair of side covers 22 each formed of a steel plate are provided upright on the saddle 13 on opposite sides of the column 14 with respect to the X-axis as extending along the Y-axis.
- the side covers 22 are each formed with a rhomboidal inspection window 22 a having anteroposteriorly inclined longitudinal edges.
- An open/close door 22 b having a slightly smaller size than the inspection window 22 a and openable for inspection is removably fitted in the inspection window 22 a . Therefore, a fitting groove 22 c is present in the surface of the side cover 22 between the open/close door 22 b and the peripheral edge of the inspection window 22 a.
- a pair of cover units 23 are provided at opposite ends of the bed 11 with respect to the X-axis.
- the cover units 23 respectively accommodate cover sheets 23 a which are wound to be paid out as biased in a winding direction.
- the cover sheets 23 a paid out of the respective cover units 23 are connected to front edges of the paired side covers 22 via cover connectors 24 each formed of a steel plate.
- a front cover 25 for covering the spindle head guide ways 14 a and a ball thread (not shown) as a spindle head driving mechanism is attached to the column 14 below the head cover 21 surrounding the spindle head 15 .
- the front cover 25 includes an extendible portion 25 a which extends and contracts in accordance with the up-and-down movement of the spindle head 15 .
- An extendible cover 26 for covering the column guide way 13 a and a ball thread (not shown) as a column moving mechanism is attached to a lower edge of the front cover 25 .
- the extendible cover 26 extends and contracts in accordance with the back-and-forth movement of the column 14 (see FIGS. 6A, 6B and 6 C).
- FIGS. 6A, 6B and 6 C small gaps are defined between surfaces of the side covers 22 and opposite side edges of the front cover 25 movable back and forth along the Y-axis together with the column 14 .
- elongate seal members 27 are respectively attached to the opposite side edges of the front cover 25 as extending perpendicularly to the Y-axis.
- structural elements such as the column 14 , the spindle head 15 and the head cover 21 are not shown for easier understanding of the movement of the front cover 25 relative to the side covers 22 .
- the seal members 27 each include a generally rigid support portion 27 a supported by the associated side edge of the front cover 25 , and a lip-shaped flexible edge portion 27 b connected to the support portion 27 a .
- the edge portion 27 b projecting from the support portion 27 a at a predetermined angle is kept in press contact with the surface of the side cover 22 . Therefore, the seal member 27 is slidable on the surface of the side cover 22 as the front cover 25 is moved back and forth along the Y-axis together with the column 14 .
- the fitting groove 22 c defined between the peripheral edge of the inspection window 22 a and the open/close door 22 b fitted in the inspection window 22 a is present in the surface of the side cover 22 on which the seal member 27 is slide.
- the inspection window 22 a has a rhomboidal shape having anteroposteriorly inclined longitudinal edges as described above, whereas the seal member 27 is supported by the front cover 25 as extending perpendicularly to the Y-axis.
- the edge of the seal member 27 intersects parts of the fitting groove 22 c extending along the inclined longitudinal edges of the inspection window 22 a as shown in FIG. 8, when the seal member 27 passes over the inspection window 22 a.
- the inspection window 22 a has a rhomboidal shape having anteroposteriorly inclined longitudinal edges, so that the seal member 27 attached to the front cover 25 as extending perpendicularly to the Y-axis intersects the fitting groove 22 c present in the surface of the side cover 22 between the peripheral edge of the inspection window 22 a and the open/close door 22 b .
- the present invention is not limited to this arrangement.
- the inspection window provided in the side cover 22 may have a rectangular or square shape having a pair of vertically extending opposite edges.
- the seal member 27 attached to the front cover 22 is inclined with respect to the Y-axis. This arrangement also allows the seal member 27 to intersect the fitting groove present in the surface of the side cover 22 .
- the embodiment described above is directed to the case where the fitting groove is present between the peripheral edge of the inspection window 22 a and the open/close door 22 b in the surface of the side cover 22 on which the seal member 27 is slid.
- the present invention is not limited to the case.
- the present invention is also applicable to a case, for example, where the side cover is formed by combining a plurality of steel plates with each other with their end faces abutting against each other and, hence, has an abutment groove along a juncture between the steel plates. Even in this case, the same effect can be provided by allowing the seal member to intersect the abutment groove.
- the embodiment described above is directed to the vertical machining center 1 employing the sealing structure in which the gaps defined between the surfaces of the side covers 22 and the side edges of the front cover 25 are closed by the seal members 27 respectively attached to the side edges of the front cover 25 .
- the present invention is not limited to this sealing structure, but is applicable to various types of sealing structures for closing a gap defined between a surface of an object having a thin groove such as a fitting groove or an abutment groove and a member movable on the surface of the object by a seal member attached to the movable member in sliding contact with the surface of the object.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Bearings For Parts Moving Linearly (AREA)
Abstract
In a vertical machining center, side covers (22) are provided upright on a saddle on opposite sides of a column. The side covers (22) each have a surface having a fitting groove (22 c) defined between an open/close door (22 b) and an inspection window (22 a) of a rhomboidal shape having anteroposteriorly inclined longitudinal edges. A front cover (25) is attached to the column. Elongate seal members (27) are respectively provided along opposite side edges of the front cover (25) as vertically extending in sliding contact with the surfaces of the side covers (22) for closing small gaps defined between the side edges of the front cover (25) and the surfaces of the side covers (22).
Description
- 1. Field of the Invention
- The present invention relates to a sealing structure for closing a gap defined between a surface of an object and a member movable on the surface of the object by a seal member attached to the movable member in sliding contact with the surface of the object.
- 2. Description of Related Art
- A machine tool including a plurality of members movable in different directions (e.g., a machining center having a saddle, a column and a spindle head which are movable along an X-axis, a Y-axis and a Z-axis, respectively) generally includes various covers which are provided to isolate guide ways for guiding the respective movable members and ball threads for driving the respective movable members from a machining region for protection of these members from chips and the like. Some of these covers are provided in relatively movable manner, so that a gap is defined therebetween. Therefore, a sealing structure for closing a gap defined between two associated covers is employed which includes a seal member (e.g., a lip seal) attached to one of the covers in sliding contact with a surface of the other cover.
- Since such a cover is provided for isolating the inside of the machine from the machining region as described above, it is often necessary to provide an inspection window in the cover for inspecting the inside of the machine. In general, an open/close door having a slightly smaller size than the inspection window provided in the cover and openable for inspection is removably fitted in the inspection window to close the inspection window. Therefore, a thin fitting groove is present in the surface of the cover between the open/close door and the peripheral edge of the inspection window.
- Where the cover is too large to be formed of a single steel plate or the like, the cover is formed by combining a plurality of steel plates with each other with their opposed end faces abutting against each other. In this case, a thin abutment groove is present in the large cover along a juncture between the steel plates.
- As shown in FIG. 9, when a seal member (e.g. lip seal)60 is slid on a surface of a
cover 50 having athin groove 51 such as the fitting groove or the abutment groove to pass over thethin groove 51 present in the surface of thecover 50, aflexible edge portion 61 of theseal member 60 kept in press contact with the surface of the cover may enter thethin groove 51. When theseal member 60 is repeatedly moved in and out of thethin groove 51, theflexible edge portion 61 of theseal member 60 is liable to be broken or deformed. This makes it impossible to keep theseal member 60 into contact with the surface of the cover, deteriorating the sealing performance. - It is therefore an object of the present invention to provide a sealing structure for closing a gap defined between a surface of an object and a member movable on the surface of the object by a seal member attached to the movable member in sliding contact with the surface of the object, the seal member being unlikely to enter a thin groove present in the surface of the object.
- In accordance with a first aspect of the present invention to achieve the aforesaid object, there is provided a sealing structure comprising: an object having a surface having a thin groove; a member movable on the surface of the object with a gap defined between the movable member and the surface of the object; and a seal member attached to the movable member and having a flexible edge portion kept in sliding contact with the surface of the object for closing the gap by the flexible edge portion; wherein the seal member, which is moved in sliding contact with the surface of the object as the movable member is moved, is disposed as intersecting the thin groove present in the surface of the object.
- In this sealing structure, the seal member moved in sliding contact with the surface of the object is disposed as intersecting the thin groove present in the surface of the object as described above. Hence, there is no possibility that the edge portion of the seal member enters the thin groove when the seal member passes over the thin groove present in the surface of the object. With this sealing structure, the breakage or deformation of the seal member can assuredly be prevented, leading to more reliable sealing performance.
- Particularly, the present invention may be embodied as a sealing structure for a machine tool, which comprises a saddle movable laterally on a bed, a column movable back and forth on the saddle, a front cover attached to the column as covering a front surface of the column, a side cover having a surface having a thin groove and provided upright on the saddle along a direction of movement of the column with a gap defined between the side cover and a side edge of the front cover, and a seal member attached to the front cover and having a flexible edge portion kept in sliding contact with the surface of the side cover for closing the gap by the flexible edge portion. In this case, the seal member, which is moved in sliding contact with the surface of the side cover as the column is moved, is disposed as intersecting the thin groove present in the surface of the side cover.
- The foregoing and other objects, features and effects of the present invention will become more apparent from the following description of the preferred embodiments with reference to the attached drawings.
- FIG. 1 is a perspective view illustrating a vertical machining center which employs a sealing structure according to the present invention;
- FIG. 2 is a front view illustrating the vertical machining center;
- FIG. 3 is a schematic side view illustrating a positional relationship between side covers and a front cover in the vertical machining center;
- FIG. 4 is a schematic plan view illustrating the positional relationship between the side covers and the front cover in the vertical machining center;
- FIG. 5 is a schematic front view illustrating the positional relationship between the side covers and the front cover in the vertical machining center;
- FIGS. 6A to6C are perspective views illustrating the movement of the front cover relative to the side covers in the vertical machining center;
- FIG. 7 is a partially enlarged perspective view illustrating a seal member attached to the front cover;
- FIG. 8 is a diagram illustrating a positional relationship between the seal member and an inspection window provided in the side cover, which is observed when the seal member passes over the inspection window; and
- FIG. 9 is a diagram for explaining a problem associated with a prior art sealing structure.
- Preferred embodiments of the present invention will hereinafter be described with reference to the drawings. FIGS.1 to 5 illustrate a
vertical machining center 1 which employs a sealing structure according to the present invention. As shown, thevertical machining center 1 includes a table 12 fixed to a front portion of abed 11, asaddle 13 movable laterally of the table 12 (along an X-axis) onguide ways 11 a provided on a rear portion of thebed 11, acolumn 14 movable back and forth (along a Y-axis) onguide ways 13 a provided on an upper surface of thesaddle 13, and aspindle head 15 movable up and down (along a Z-axis) onguide ways 14 a provided on a front surface of thecolumn 14. Thespindle head 15 is covered with ahead cover 21. - A pair of side covers22 each formed of a steel plate are provided upright on the
saddle 13 on opposite sides of thecolumn 14 with respect to the X-axis as extending along the Y-axis. As shown in FIGS. 6A, 6B, 6C and 8, the side covers 22 are each formed with arhomboidal inspection window 22 a having anteroposteriorly inclined longitudinal edges. An open/close door 22 b having a slightly smaller size than theinspection window 22 a and openable for inspection is removably fitted in theinspection window 22 a. Therefore, afitting groove 22 c is present in the surface of theside cover 22 between the open/close door 22 b and the peripheral edge of theinspection window 22 a. - Further, a pair of
cover units 23 are provided at opposite ends of thebed 11 with respect to the X-axis. Thecover units 23 respectively accommodatecover sheets 23 a which are wound to be paid out as biased in a winding direction. Thecover sheets 23 a paid out of therespective cover units 23 are connected to front edges of the paired side covers 22 viacover connectors 24 each formed of a steel plate. - Therefore, a region where the saddle guide
ways 11 a and a ball thread (not shown) as a saddle driving mechanism are disposed is completely isolated from a machining region by thecover sheets 23 a paid out of thecover units 23, thecover connectors 24 and the side covers 22, whereby the saddle guide ways and the ball thread are protected from chips and the like. - A
front cover 25 for covering the spindlehead guide ways 14 a and a ball thread (not shown) as a spindle head driving mechanism is attached to thecolumn 14 below thehead cover 21 surrounding thespindle head 15. Thefront cover 25 includes anextendible portion 25 a which extends and contracts in accordance with the up-and-down movement of thespindle head 15. - An
extendible cover 26 for covering thecolumn guide way 13 a and a ball thread (not shown) as a column moving mechanism is attached to a lower edge of thefront cover 25. Theextendible cover 26 extends and contracts in accordance with the back-and-forth movement of the column 14 (see FIGS. 6A, 6B and 6C). - As shown in FIGS. 6A, 6B and6C, small gaps are defined between surfaces of the side covers 22 and opposite side edges of the
front cover 25 movable back and forth along the Y-axis together with thecolumn 14. For closing the gaps,elongate seal members 27 are respectively attached to the opposite side edges of thefront cover 25 as extending perpendicularly to the Y-axis. In FIGS. 6A, 6B and 6C, structural elements such as thecolumn 14, thespindle head 15 and thehead cover 21 are not shown for easier understanding of the movement of thefront cover 25 relative to the side covers 22. - As shown in FIG. 7, the
seal members 27 each include a generallyrigid support portion 27 a supported by the associated side edge of thefront cover 25, and a lip-shapedflexible edge portion 27 b connected to thesupport portion 27 a. Theedge portion 27 b projecting from thesupport portion 27 a at a predetermined angle is kept in press contact with the surface of theside cover 22. Therefore, theseal member 27 is slidable on the surface of theside cover 22 as thefront cover 25 is moved back and forth along the Y-axis together with thecolumn 14. - As described above, the
fitting groove 22 c defined between the peripheral edge of theinspection window 22 a and the open/close door 22 b fitted in theinspection window 22 a is present in the surface of theside cover 22 on which theseal member 27 is slide. However, theinspection window 22 a has a rhomboidal shape having anteroposteriorly inclined longitudinal edges as described above, whereas theseal member 27 is supported by thefront cover 25 as extending perpendicularly to the Y-axis. In the sealing structure, therefore, the edge of theseal member 27 intersects parts of thefitting groove 22 c extending along the inclined longitudinal edges of theinspection window 22 a as shown in FIG. 8, when theseal member 27 passes over theinspection window 22 a. - Therefore, there is no possibility that the
flexible edge portion 27 b of theseal member 27 enters the parts of the fitting groove extending along the inclined longitudinal edges of theinspection window 22 a when theseal member 27 passes over theinspection window 22 a. Therefore, the breakage or deformation of theflexible edge portion 27 b of theseal member 27 can assuredly be prevented, leading to more reliable sealing performance. - In the embodiment described above, the
inspection window 22 a has a rhomboidal shape having anteroposteriorly inclined longitudinal edges, so that theseal member 27 attached to thefront cover 25 as extending perpendicularly to the Y-axis intersects thefitting groove 22 c present in the surface of theside cover 22 between the peripheral edge of theinspection window 22 a and the open/close door 22 b. However, the present invention is not limited to this arrangement. For example, the inspection window provided in theside cover 22 may have a rectangular or square shape having a pair of vertically extending opposite edges. In this case, theseal member 27 attached to thefront cover 22 is inclined with respect to the Y-axis. This arrangement also allows theseal member 27 to intersect the fitting groove present in the surface of theside cover 22. - Further, the embodiment described above is directed to the case where the fitting groove is present between the peripheral edge of the
inspection window 22 a and the open/close door 22 b in the surface of theside cover 22 on which theseal member 27 is slid. However, the present invention is not limited to the case. The present invention is also applicable to a case, for example, where the side cover is formed by combining a plurality of steel plates with each other with their end faces abutting against each other and, hence, has an abutment groove along a juncture between the steel plates. Even in this case, the same effect can be provided by allowing the seal member to intersect the abutment groove. - Further, the embodiment described above is directed to the
vertical machining center 1 employing the sealing structure in which the gaps defined between the surfaces of the side covers 22 and the side edges of thefront cover 25 are closed by theseal members 27 respectively attached to the side edges of thefront cover 25. However, the present invention is not limited to this sealing structure, but is applicable to various types of sealing structures for closing a gap defined between a surface of an object having a thin groove such as a fitting groove or an abutment groove and a member movable on the surface of the object by a seal member attached to the movable member in sliding contact with the surface of the object. - While the present invention has been described in detail by way of the embodiment thereof, it should be understood that the foregoing disclosure is merely illustrative of the technical principles of the present invention but not limitative of the same. The spirit and scope of the present invention are to be limited only by the appended claims.
Claims (9)
1. A sealing structure comprising:
an object having a surface having a thin groove;
a member movable on the surface of the object with a gap defined between the movable member and the surface of the object; and
a seal member attached to the movable member and having a flexible edge portion kept in sliding contact with the surface of the object for closing the gap by the flexible edge portion;
wherein the seal member, which is moved in sliding contact with the surface of the object as the movable member is moved, is disposed as intersecting the thin groove present in the surface of the object.
2. A sealing structure for a machine tool comprising:
a saddle movable laterally on a bed;
a column movable back and forth on the saddle;
a front cover attached to the column as covering a front surface of the column;
a side cover having a surface having a thin groove, and provided upright on the saddle along a direction of movement of the column with a gap defined between the side cover and a side edge of the front cover; and
a seal member attached to the front cover and having a flexible edge portion kept in sliding contact with the surface of the side cover for closing the gap by the flexible edge portion;
wherein the seal member, which is moved in sliding contact with the surface of the side cover as the column is moved, is disposed as intersecting the thin groove present in the surface of the side cover.
3. A sealing structure as set forth in claim 2 ,
wherein the side cover has an inspection window,
wherein an open/close door having a slightly smaller size than the inspection window is removably fitted in the inspection window,
wherein the thin groove is a fitting groove defined when the open/close door is fitted in the inspection window.
4. A sealing structure as set forth in claim 3 ,
wherein the seal member extends vertically,
wherein the inspection window has a rhomboidal shape having four edges inclined with respect to a vertical line.
5. A sealing structure as set forth in claim 3 ,
wherein the seal member is inclined toward a front or rear side with respect to a vertical line,
wherein the inspection window has a rectangular or square shape having a pair of vertically extending opposite edges.
6. A sealing structure as set forth in claim 2 ,
wherein the side cover comprises a plurality of steel plates combined with each other with opposed end faces thereof abutting against each other.
wherein the thin groove is an abutment groove defined along a juncture between the steel plates as extending vertically.
7. A sealing structure as set forth in claim 2 ,
wherein the column comprises a spindle head movable up and down on the front surface thereof,
wherein the front cover comprises an extendible portion which extends and contracts in accordance with the up-and-down movement of the spindle head.
8. A sealing structure as set forth in claim 2 , further comprising cover units provided at laterally opposite ends of the bed,
wherein the cover units respectively accommodate cover sheets which are wound so as to be paid out as biased in a winding direction,
wherein the cover sheets paid out of the cover units are each connected to a front edge of the side cover via a cover connector.
9. A sealing structure as set forth in claim 2 , further comprising an extendible cover attached to a lower edge of the front cover, the extendible cover being adapted to extend and contract in accordance with the back-and-forth movement of the column.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2002-090174 | 2002-03-28 | ||
JP2002090174A JP2003287027A (en) | 2002-03-28 | 2002-03-28 | Seal structure |
Publications (1)
Publication Number | Publication Date |
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US20030183635A1 true US20030183635A1 (en) | 2003-10-02 |
Family
ID=28035851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/392,974 Abandoned US20030183635A1 (en) | 2002-03-28 | 2003-03-21 | Sealing structure |
Country Status (3)
Country | Link |
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US (1) | US20030183635A1 (en) |
EP (1) | EP1350595A2 (en) |
JP (1) | JP2003287027A (en) |
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US20180065224A1 (en) * | 2016-09-02 | 2018-03-08 | O-M Ltd. | Machine tool |
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USD843423S1 (en) * | 2017-09-26 | 2019-03-19 | Wfl Millturn Technologies Gmbh & Co. Kg | Door of a machine tool |
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EP1900476B1 (en) * | 2006-09-18 | 2009-04-29 | Chiron-Werke GmbH & Co. KG | Machine tool with a working chamber |
CN106425675A (en) * | 2016-12-21 | 2017-02-22 | 嘉善津隈精密机械有限公司 | Machining machine tool capable of protecting protective covers against accidental damage |
CN108032137B (en) * | 2017-11-06 | 2020-01-24 | 珠海格力电器股份有限公司 | Door and window seal structure and have its lathe |
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US4635699A (en) * | 1984-04-06 | 1987-01-13 | Covenant Manufacturing Co. | Retractable safety shield |
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US6749495B2 (en) * | 1999-11-26 | 2004-06-15 | Stama Maschinenfabrik Gmbh | Machine tool with roof covering bellow |
-
2002
- 2002-03-28 JP JP2002090174A patent/JP2003287027A/en active Pending
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2003
- 2003-03-13 EP EP03005409A patent/EP1350595A2/en not_active Withdrawn
- 2003-03-21 US US10/392,974 patent/US20030183635A1/en not_active Abandoned
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US3824890A (en) * | 1971-01-22 | 1974-07-23 | Giddings & Lewis | Chip guard for machine tools |
US4635699A (en) * | 1984-04-06 | 1987-01-13 | Covenant Manufacturing Co. | Retractable safety shield |
US5156195A (en) * | 1989-08-28 | 1992-10-20 | Kabelschlepp Gesellschaft Mit Beschrankter Haftung | Telescopic covering |
US6260439B1 (en) * | 1998-09-30 | 2001-07-17 | P.E.I. Protezioni Elaborazioni Industriali S.R.L. | Protective cover which can be attached to a machining part which is mobile at least according to a plane |
US6749495B2 (en) * | 1999-11-26 | 2004-06-15 | Stama Maschinenfabrik Gmbh | Machine tool with roof covering bellow |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6987241B2 (en) | 2003-11-01 | 2006-01-17 | Trumpf Werkzeugmaschin Gmbh + Co. Kg | Machine tool installation including gated enclosure |
US20050095074A1 (en) * | 2003-11-01 | 2005-05-05 | Michael Hacker | Machine tool installation including gated enclosure |
US8084714B2 (en) * | 2004-09-14 | 2011-12-27 | Trumpf Laser-Und Systemtechnik Gmbh | Protection device of a laser processing unit |
US20060076322A1 (en) * | 2004-09-14 | 2006-04-13 | Thomas Brauchle | Protection device of a laser processing unit |
US20070042882A1 (en) * | 2005-08-19 | 2007-02-22 | Mikron Agie Charmilles Ag | Machine tool, in particular a drilling and milling machine |
US7226403B2 (en) * | 2005-08-19 | 2007-06-05 | Mikron Agie Charmilles Ali | Machine tool, in particular a drilling and milling machine |
US7183484B1 (en) * | 2006-02-27 | 2007-02-27 | Rom Acquisition Corporation | Bulkhead assembly with seal for storage compartments |
US20120214387A1 (en) * | 2011-02-17 | 2012-08-23 | Kadia Produktion Gmbh + Co. | Honing machine comprising a device for the mechanical surface machining of workpieces |
US9126296B2 (en) * | 2011-02-17 | 2015-09-08 | Kadia Produktion Gmbh + Co. | Honing machine comprising a device for the mechanical surface machining of workpieces |
US20150050096A1 (en) * | 2013-08-16 | 2015-02-19 | Fanuc Corporation | Machine tool having protective cover |
US20180065224A1 (en) * | 2016-09-02 | 2018-03-08 | O-M Ltd. | Machine tool |
US10239174B2 (en) * | 2016-09-02 | 2019-03-26 | O-M Ltd. | Machine tool |
CN107791090A (en) * | 2017-09-04 | 2018-03-13 | 宁夏共享机床辅机有限公司 | A kind of horizontal machining center machine protects vertical clamshell doors |
USD843423S1 (en) * | 2017-09-26 | 2019-03-19 | Wfl Millturn Technologies Gmbh & Co. Kg | Door of a machine tool |
Also Published As
Publication number | Publication date |
---|---|
JP2003287027A (en) | 2003-10-10 |
EP1350595A2 (en) | 2003-10-08 |
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