JP2005118893A - Cover device for machine tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive cover device which has a simple constitution for preventing the scattering of chips and cutting oil or the like of a machine tool. <P>SOLUTION: Each longitudinal edge part on the center side of two plate-like rectangular members 25, 26 having the same length is arranged side by side in a slight gap. Both of the longitudinal edge parts on the center side are connected by an elastic member 27 so as to be openable/closable and in a sealed state. The outside longitudinal edge part of one plate-like rectangular member 25 is mounted to a movable body 4 of the machine tool with a hinge 28. The outside longitudinal edge part of the other plate-like rectangular member 26 is mounted to a fixed part 22 of the machine tool with a hinge 29. The lateral edge parts at both ends of the two plate-like rectangular members, which are opened/closed by the movement of the movable body, and both end closing members 3, 30, which are oppositely arranged in a slight gap respectively, are provided to the fixed part of the machine. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a machine tool cover device that prevents chips, cutting oil, and the like from scattering from a machining area of a machine tool.

Conventionally, in a machine tool, for example, an NC lathe, a spindle is rotatably supported on a spindle table, a workpiece is gripped on the spindle by a chuck, and a saddle mounted with a tool table is mounted so as to be movable in the axis direction of the spindle. Then, the tool attached to the tool table is cut into the workpiece while supplying the cutting oil to the processing point where the tool processes the workpiece, and the workpiece is processed by sending it in the axial direction of the spindle. In this case, in the inner cover device of the machine tool described in Patent Document 1 in order to prevent chips and cutting oil from entering the inside of the machine, the tool works in the side region where the headstock is located. A side cover is fixed to the front surface of the headstock in order to shield the workpiece from the machining area, and the side part is shielded from the machining area behind the saddle between the saddle and the headstock. A rear cover that is in sliding contact with the cover and extends in the direction of the main shaft axis in the side region is fixed to the side surface of the saddle on the main shaft side. Then, in order to shield the inside of the machine behind the saddle opposite to the main shaft from the machining area with the saddle interposed therebetween, a fixed cover extending in the main shaft axis direction is fixed to the side portion opposite to the main shaft of the saddle. Because the fixed cover protrudes from the side opposite to the main shaft of the machine due to the axial movement of the saddle, the machine becomes longer. A storage case containing a winding mechanism for fixing and winding the cover body is attached to a side end fixing portion on the opposite side to the main shaft of the machine.
JP 2002-66870 A (3rd and 4th pages, FIG. 4)

  In the above-described conventional apparatus, a plurality of metal pieces are connected by a rubber connecting member to form a cover body, and a cylindrical body that is rotatably supported on the housing case with the end of the cover body fixed is wound by a torsion coil spring. Since the winding mechanism is configured by urging in the take-up direction, a cover device for shielding the inside of the machine behind the saddle opposite to the main shaft from the machining area with the saddle interposed therebetween is expensive. In addition, the machining area on the opposite side of the spindle with respect to the saddle is away from the machining point where the tool works the workpiece, and there is also a saddle and a tool post between the machining points. Since it rarely flies, there has been a demand for an inexpensive cover device that prevents chips, cutting oil, and the like that occasionally fly from entering the inside of the machine.

  The present invention has been made in view of the above-described conventional problems, and it is an object of the present invention to provide an inexpensive cover device that has a simple structure for preventing chips and cutting oil of a machine tool from scattering. .

  In order to solve the above-described problem, a cover device for a machine tool according to claim 1 is configured such that two central rectangular edges of two plate-like rectangular members having the same length are juxtaposed with a slight gap therebetween. The vertical edge portion is hermetically connected so as to be openable and closable by an elastic member, the outer vertical edge portion of one plate-like rectangular member is attached to a moving body of a machine tool by a hinge, and the outer vertical edge portion of the other plate-like rectangular member is attached The horizontal edge portions at both ends of the two plate-like rectangular members attached to the fixed portion of the machine tool by hinges and opened / closed by the movement of the movable body are respectively opposed to the both-end closing members with a slight gap.

  According to a second aspect of the present invention, there is provided a machine tool cover device comprising: a tool mount on which a spindle on which a workpiece is mounted is fixed to a base and a tool for turning the workpiece is mounted; In a lathe in which a mounted saddle is mounted on the base so as to be movable in the axial direction of the spindle, a machining area on the spindle base side between the spindle base and an end portion of the saddle opposite to the spindle base is provided. A surrounding headstock cover is provided, and the center-side vertical edges of two plate-shaped rectangular members of the same length are juxtaposed with a slight gap, and both center-side vertical edges can be opened and closed by an elastic member. The outer vertical edge of one of the two plate-shaped rectangular members of the two sheets is hinged to the side wall of the headstock side cover, and is fixed to the end of the base opposite to the headstock. The outer vertical edge of the other plate-shaped rectangular member is attached to the side end fixing portion with a hinge, and the saddle is moved. The lower edge of the two plate-shaped rectangular members that are opened and closed by the front face are opposed to the slide surface with a slight gap, and the upper edge of the lateral edge is made to face the closing member attached to the fixed portion with a slight gap. It is surrounding the edge part side process area | region between the edge part on the opposite side to the said headstock, and the said side edge fixing | fixed part.

  A cover device for a machine tool according to a third aspect is the cover device according to the first or second aspect, wherein the elastic member is an oil-resistant resin.

  In the machine tool cover device according to claim 1, the outer vertical edge portions of the two plate-like rectangular members that are sealingly connected so as to be openable and closable are respectively attached to the moving body and the fixed portion of the machine tool by hinges. Since the lateral edges of both ends of the two plate-shaped rectangular members that are opened and closed by the movement of the moving body are made to face the both-end closing members with a slight gap, the work for preventing the scattering of cutting chips and cutting oil, etc. The machine cover device can be provided at a low cost with a simple configuration.

  In the machine tool cover device according to claim 2, the outer vertical edge of one rectangular member of the two plate-like rectangular members connected so as to be openable and closable is hinged to the side wall of the headstock side cover. The lower edge of the two plate-shaped rectangular members that are opened and closed by the movement of the saddle by attaching the outer vertical edge of the other rectangular member to a side end fixing portion fixed to the end opposite to the headstock of the base. The horizontal edge is opposed to the slide surface on which the saddle is movably mounted with a slight gap, and the upper edge of the upper edge is opposed to the closing member attached to the side end fixing part with a slight gap to leave the lathe headstock. Since the end side machining area is enclosed, the tool is separated from the machining point where the workpiece is machined, and the configuration surrounding the rear side machining area where chips and cutting oil rarely fly is provided. A simple and inexpensive cover device can be provided.

  In the machine tool cover device according to the third aspect, since the elastic member for sealingly connecting the two plate-like rectangular members so as to be openable and closable is made of an oil-resistant resin, it may be deteriorated even if the cutting oil adheres. It is possible to provide a cover device that has a simple structure and is inexpensive.

  An embodiment of a machine tool cover device according to the present invention will be described below with reference to the drawings. FIG. 1 is a front view along an inclined surface 2 formed on the upper surface of a bed 1 which is a base of an NC lathe, and FIG. 2 is a partial cross-sectional view taken along line AA in FIG. is there. On the upper surface of the bed 1, a horizontal surface and an inclined surface 2 inclined upward by 30 degrees from the rear end of the horizontal surface are formed so as to extend in parallel to the left and right Z-axis directions. A slide surface 3 is formed on the inclined surface 2, and a saddle 4 is mounted on the slide surface 3 so as to be movable in the Z-axis direction. A guide surface 5 is formed on the upper surface of the saddle 4, and a tool post 6 is mounted on the guide surface 5 so as to be movable in the front and rear X-axis directions. A turret 8 in which a plurality of tool mounting positions 7 are formed at equiangular intervals is supported on the tool post 6 so as to be indexed and rotated, and a tool 9 attached to the plurality of tool mounting positions is sequentially allocated to a machining position. It has come out. A headstock 10 is fixed to the horizontal surface of the upper surface of the bed 1, and a tailstock 11 is fixed so as to be capable of adjusting the position in the Z-axis direction so as to face the headstock 10. A spindle 12 is supported by the spindle stock 10 so as to be rotationally driven, and a chuck 13 for gripping and rotating the workpiece W is provided at the tip of the spindle 12. A ram 14 is slidably fitted to the tailstock 11 so as to be slidable in the axial direction of the spindle, a center 15 is fitted to the tip of the ram 14, the ram 14 is advanced, and the center 15 is fitted into the center hole of the workpiece W. The rear end of the workpiece W is supported. Reference numeral 16 denotes a nozzle that supplies cutting oil to a processing point where the cutting tool 9 cuts the workpiece W.

  A side cover 19 is fixed to the front surface of the headstock 10 in order to shield the side area 17 where the headstock 10 is located from the machining area 18 where the tool 9 processes the workpiece W. An enclosing cover 20 is fixed to the saddle 5 so as to surround an end portion, a rear side portion, and an upper side portion of the saddle 4 and the tool rest 6 opposite to the spindle stock 10 and shield the slide surface 3 from the processing region 18. The open end of the cover 20 on the headstock 10 side extends in the direction of the main shaft axis, and is in sliding contact with the outer peripheral edge of the side cover 19 via the seal member 21 and enters the side region 17. The side cover 19 and the surrounding cover 20 constitute a headstock-side cover 31 that surrounds the headstock-side processing area 18 a on the headstock 10 side from the saddle 4 of the processing area 18.

  An end side machining area 18b between the end of the saddle 4 and the tool rest 6 on the side opposite to the head stock 10 and the side end fixing part 22 on the opposite side of the machine head stock 10 is located behind the saddle 4 and tool rest 6. In order to shield from the side and upper region 23 and the lower region of the slide surface 3, the bending cover 23 is provided between the side wall 20 a opposite to the headstock 10 of the surrounding cover 20 and the side end fixing portion 22. . Reference numeral 32 denotes an entire cover fixed on the bed 1 and covering the entire machine. A side end wall of the entire cover 32 opposite to the headstock 10 forms a side end fixing portion 22.

  As shown in FIG. 2, in the bending / extending cover 24, the center-side vertical edges of the two plate-like rectangular members 25, 26 having the same length are juxtaposed with a slight gap, and both the center-side vertical edges are oil resistant. An elastic member 27 such as resin is hermetically connected so as to be openable and closable, and the outer vertical edge of one plate-like rectangular member 25 is attached to the side wall 20a of the surrounding cover 20 by two hinges 28, and the other An outer vertical edge portion of the plate-like rectangular member 26 is attached to the side end fixing portion 22 by two hinges 29. The lower lateral edges of the two plate-like rectangular members 25 and 26 that are opened and closed by the movement of the saddle 4 in the Z-axis direction are opposed to the slide surface 3 with a slight gap, and the upper lateral edges are attached to the upper portion of the entire cover 32 and slide. It is opposed to the closing member 30 extending parallel to the surface 3 with a slight gap.

  The operation of the embodiment configured as described above will be described. The workpiece W is mounted on the spindle 12 by the chuck 13 and is driven to rotate with the center 15 of the tailstock 11 fitted in the center hole at the rear end. Cutting oil is supplied from the nozzle 16 to the tip of the cutting tool 9, the tool table 6 is advanced in the X direction, the cutting tool 9 is cut into the workpiece W, and the saddle 4 is fed and moved in the Z-axis direction. W is turned by a tool 9. At this time, the spindle side machining region 18a is reliably surrounded by the spindle base side cover 31 in which the surrounding cover 20 is in sliding contact with the side cover 19, so that chips, cutting oil, etc. scatter and enter the machine. Is prevented. In the end side processing region 18b, the bending cover 24 is opened and closed as the saddle 4 moves, and is surrounded by the bending cover 24, the closing member 30, and the slide surface 3, so that chips, cutting oil, and the like are scattered inside the machine. There is no invasion. The end side processing region 18b is separated from the processing point where the cutting tool 9 processes the workpiece W, and the flying of cutting chips and cutting oil or the like is rare, so the bending cover 24, the closing member 30 and the like having a simple configuration are used. It is possible to prevent chips and cutting oil from entering the machine. Further, the bending / extending cover 24 bends and stretches as the saddle 4 moves, and does not protrude from the side end fixing portion 22.

The figure which looked at the NC lathe equipped with the cover apparatus of the machine tool which concerns on this invention from the front along the inclined surface formed in the bed upper surface. AA sectional drawing of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Bed (base), 3 ... Sliding surface, 4 ... Saddle (moving body), 6 ... Tool stand, 9 ... Bit (tool), 10 ... Spindle base, 11 ... Tailstock, 12 ... Spindle, 13 ... Chuck, 16 ... nozzle, 17 ... side region, 18 ... machining region, 18a ... headstock side machining region, 18b ... end side machining region, 19 ... side cover, 20 ... enveloping cover, 20a ... side wall, 22 ... Side end fixing part, 23 ... rear side and upper side area, 24 ... bending cover, 25, 26 ... two plate-like rectangular members, 27 ... elastic member, 28, 29 ... hinge, 30 ... closing member, 31 ... headstock Side cover, 32 ... overall cover, W ... workpiece.

Claims (3)

The center-side vertical edges of two plate-shaped rectangular members of the same length are juxtaposed with a slight gap, and both the center-side vertical edges are connected in an openable and closable manner by an elastic member. The outer vertical edge portion of the member is attached to a moving body of the machine tool by a hinge, the outer vertical edge portion of the other plate-like rectangular member is attached to the fixed portion of the machine tool by a hinge, and is opened and closed by the movement of the movable body. A machine tool cover device characterized in that lateral edge portions of both ends of a plate-like rectangular member are opposed to both end closing members with a slight gap. A spindle on which a workpiece is mounted is fixed to a base that is supported so as to be rotationally driven, and a saddle equipped with a tool base on which a tool for turning the workpiece is mounted is attached to the base. In a lathe mounted so as to be movable in the axial direction, a headstock side cover is provided that surrounds a headstock side machining area between the headstock and an end portion of the saddle opposite to the headstock, and has the same length. Of the two plate-like rectangular members are arranged side by side with a small gap, and both the central side vertical edge portions are hermetically connected by an elastic member so as to be openable and closable. The outside vertical edge of the plate-shaped rectangular member is attached to the side wall of the headstock side cover with a hinge, and the other plate-shaped rectangular member is fixed to the side end fixing portion fixed to the end of the base opposite to the headstock. The two plate-like rectangular members that are attached to the outer vertical edge by a hinge and that are opened and closed by the movement of the saddle The lower edge of the saddle is opposed to the slide surface with a slight gap, and the upper edge of the horizontal edge is opposed to the closing member attached to the fixed portion with a slight gap. A machine tool cover device that surrounds an end side machining area between the end fixing portion and the end fixing portion. 3. The machine tool cover device according to claim 1, wherein the elastic member is an oil-resistant resin.

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