JP3684789B2 - On-board stairway device for machine tools - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stairway device that allows a machine tool operator or maintenance personnel to get on the machine from one side surface of a machine tool base for adjustment or maintenance work of the machine tool. In particular, the present invention relates to a stair apparatus suitable for use in a machining system in which a plurality of machine tools are arranged close to each other.
[0002]
[Prior art]
In general, a machine tool is configured by guiding a spindle head, on which a workpiece support device and a processing tool are mounted, on a base so as to be relatively movable. The base is given a height that normally reaches the level of the abdomen of the operator from the viewpoint of ensuring mechanical rigidity and improving the workability of the operator. When adjusting or inspecting the spindle head and various auxiliary equipment arranged on this base, the operator or maintenance personnel climb the stairs arranged on the side of the base to access the target equipment / equipment on the machine. It is like that.
[0003]
In addition, in a mass production processing system in which a plurality of main machine tools are arranged adjacent to each other, the workpiece is linearly moved in front of the tool of each machine tool from the viewpoint of reducing the floor space occupied by the system. In view of providing the workpiece conveying mechanism so as to cross, both sides of each machine tool in the workpiece conveying direction are arranged adjacent to the upstream and downstream process machine tools.
[0004]
Furthermore, in each machine tool constituting the machining system described above, an operation panel consisting of an input device and a display device for machining data and various commands is installed in front of the machine, but responds to various signals from the operation panel. The control box that houses the motor drive circuit, power supply unit, etc. that operate in the rear is located at the rear of the machine in line with today's technical trend of narrowing the front opening of the machine to reduce the installation space of the processing system The
[0005]
[Problems to be solved by the invention]
In the above-described type of machine tool, the stairs installed so that workers and maintenance personnel can always get on the machine tool become an obstacle when the operator passes around the machine tool. In addition, since it is always in a state where it is easy to climb on the stairs and get on the machine, there may occur a situation where an operator, a maintenance person or other person gets on the machine unconsciously or carelessly.
[0006]
Furthermore, in the case of the above-described machining system, the rear side of each machine tool is occupied by a control box, so that it is difficult to get on the machine from the rear side, and workers and maintenance personnel are not able to enter between adjacent machines. It was necessary to secure a passage.
Accordingly, it is a primary object of the present invention to provide a stair device that allows an operator or maintenance personnel to easily access the machine only when necessary for machine tool adjustment and inspection.
[0007]
Another object of the present invention is to provide a stairway device that also functions as a cover for partitioning the onboard and the outside of the stairway device.
Another object of the present invention is to provide a stair apparatus suitable for a machining system in which a plurality of machine tools are arranged adjacent to each other in the workpiece transfer direction.
[0008]
[Means for Solving the Problems]
The problems of the conventional apparatus and the object of the present invention are solved by means configured as follows.
[0010]
In the invention according to claim 1 , each machine tool is arranged in a rectangular parallelepiped base , a support device arranged at the front portion in the longitudinal direction of the base and supporting a work, and a longitudinal center portion of each base. a spindle head device for rotatably supporting the placed tool spindle, while composed of a control box located at the rear of the base in the longitudinal direction, so that adjacent the machine tool in a direction in which the base is perpendicular to the longitudinal direction in the machine tool providing a plurality so as to leave the access path can access the operator's machine between one corner portion and the side surface of the control box facing the corner portion of the rear of the base the site where the two sides of the right angle to the adjacent said control box is arranged close to the other corner of the base of the rear part of the corresponding machine tool, constituting the access path on the base , Spacing the lower end of the stair substrate from the rear side of the floor surface the upper end installing the base opens out side of the rear surface of the base and an upright position upstanding in pivotally attached to a rear portion of the base A flat plate element that is provided so as to be able to turn between an inclined position that is in an inclined state to be seated at the position and that closes an area occupied by the stair base material in the upright state of the stair base material is attached to the stair base material A step of closing the rear surface of each machine tool in cooperation with the control box and the stair base material and presenting a horizontal plane for walking upward in the inclined position state of the stair base material. a staircase function attached to stairs substrate, the staircase function by attaching a step exhibiting a horizontal surface for walking upward by the inclined position state of said stepped substrate on said stepped substrate, further, the upright the stairs substrate Hold in position Configure the holding means is provided that.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a plan view of a mass production processing system 10 in which three machine tools 11 to 13 having a stair device 60 according to the present invention are arranged adjacent to each other in the workpiece conveyance direction indicated by arrows in the drawing. The system 10 further includes a work loading / unloading device 14 disposed on the upstream side of the machine tool 11, a work transport transfer device 15 disposed on the downstream side of the machine tool 13, and a work transport mechanism 16 and a work return mechanism 17. Consists of.
[0013]
The transport mechanism 16 travels on the transport guide rail 16a and the transport guide rail 16a extending from the loading / unloading device 14 to the transport transfer device 15 across the workpiece support device 30 of each machine tool 11-13. It consists of a plurality of (preferably four) self-propelled devices with a pallet gripping mechanism, while the return mechanism 17 is installed in front of the transport guide rail 16a in parallel with the transport guide rail 16a. And a return guide rail 17a extending up to and a self-propelled device with a pallet gripping mechanism (not shown) for transporting the processed workpiece along the guide rail 17a from the transport transfer device 15 to the loading / unloading device 14.
[0014]
On each base 20 of the machine tools 11 to 13, a spindle head 21 is guided so as to be movable in a horizontal X direction parallel to the guide rail 16a and a horizontal Z direction perpendicular thereto. The spindle head 21 supports a tool spindle 22 extending in the Z direction so as to be rotationally driven, and a tool T is detachably mounted on the front end of the tool spindle 22 by a tool changer ATC.
[0015]
The workpiece support device 30 is disposed at the front portion of the base 20 of the machine tool, that is, at a position in front of the tool spindle 22, and includes a sliding body 31 that can be vertically fed in the Y direction perpendicular to the paper surface of FIG. A first swiveling body 32 is supported at the upper end of the sliding body 31 so as to be horizontally indexable around a swiveling axis extending in the Y direction. A work table (not shown) is placed on the vertical upright portion 32 a of the first swiveling body 32. The revolving unit 32 is supported so as to be indexable around a horizontal axis perpendicular to the swiveling axis. The work table can detachably attach a work pallet (not shown), and supports the work (not shown) on the pallet via the work pallet.
[0016]
As is clear from the plan view of FIG. 1, the base 20 of each of the machine tools 11 to 13 is formed in a substantially rectangular parallelepiped shape in which the Z direction is the longitudinal direction. The upper surface 20a of the base 20 that guides the spindle head 21 is at a height of about the waist of the operator, more specifically at a height of about 80 cm from the floor. On the rear surface of each base 20, an approximately cubic auxiliary base 40 having an iron plate welded structure formed as an extension of the base 20 is provided so as not to move integrally or relative to the base.
[0017]
The upper surface 40a of the auxiliary base 40 is at the same height as the position of the upper surface 20a of the base 20, but there is a level difference that makes it easy for an operator to walk from the auxiliary base 40 to the base 20 or vice versa. It does not matter even if they are on the upper surfaces 40a and 20a of both. Further, the lateral width of the auxiliary base 40 in the X direction in FIG. 1 is substantially the same as the lateral width of the base 20 in the same direction.
[0018]
The control box 50 is installed on the auxiliary base 40 by approaching one corner (upper left in FIG. 1) of the rear portion of the auxiliary base 40. As can be understood with reference to FIGS. 1 and 2, the control box 50 has a rectangular parallelepiped outer shape whose dimensions increase in the order of the vertical width in the Z direction, the horizontal width in the X direction, and the height in the Y direction. The rectangular parallelepiped is fixed on the auxiliary base 40 in an upright direction. Preferably, the left side surface 50a in FIG. 1 of the control box 50 is substantially aligned with the left side surface of the auxiliary base 40 in the vertical direction, and the rear surface of the control box 50, that is, the closed surface of the pair of doors 50b and 50c is auxiliary. It is substantially aligned with the rear surface of the base 40 in the vertical direction.
[0019]
The lateral width of the control box 50 in the X direction is narrower than the lateral width of the auxiliary base 40 so as to leave a space where an operator or the like can walk on the side of the right side surface 50d in FIG. A stairway device 60 for boarding on the aircraft is provided in a site for the worker walking space. As is apparent with reference to FIGS. 2 and 3, the stair device 60 has a width in the X direction in FIG. 1 that is about the same as the width of the walking space. The auxiliary base 40 is pivotally attached to the upper rear surface so as to be able to turn rearward and outward.
[0020]
The staircase base 61 is formed by bending both ends in the short direction of a generally rectangular flat iron plate at right angles so as to be parallel to each other. The stair base material 61 can be swung from an upright position indicated by a chain line in FIG. 3 to an inclined position of a solid line in which the upper end is seated on the floor surface in use, and a two-step step 63 that is horizontal at this inclined position is fixed. ing. The upper surface of these steps 63 is provided with means for preventing slippage.
[0021]
Furthermore, in order to hold the staircase base 61 in an upright position when not in use, a stopper 65 with a screw hole is fixed to the right side surface of the control box 50 in FIG. An unillustrated through hole is formed in the portion of the staircase base 61 corresponding to the screw hole, and the bolt 66 is screwed into the screw hole of the stopper 65 by inserting the through hole. Is held in an upright position.
[0022]
A U-shaped window shown in FIG. 2 is formed at the center of the upper end of the staircase base 61, and a pair of ears are formed at both ends of the window so as to be parallel to the both end edges. Both ends of the handle bar 67 are supported by the ears, and a pair of rubber rollers 68 are supported inside the ears. When the upper end of the staircase base 61 is seated on the floor surface, the rubber roller 68 functions as a buffer member by grounding to the floor surface, and also functions to absorb a step on an irregular surface of the floor surface that is not necessarily flat. .
[0023]
Note that the control box 50 contains control devices such as a servo amplifier and a power supply unit that feed and control the spindle head 21 and the work support device 30 as is well known.
Next, the operation of the embodiment having the above configuration will be described.
After the operator takes out the processed workpiece released from being fixed to the pallet (not shown) in the carry-in / out device 14, the unprocessed workpiece is placed on the pallet. The carry-in / carry-out device 14 waits after fixing an unprocessed workpiece on the pallet by a nut runner mechanism (not shown). The pallet gripping mechanisms of the four self-propelled devices of the transport device 16 simultaneously grip the work on the carry-in / out device 14 and the machine tools 11 to 13 and transport them to the downstream process. Upon completion of this conveyance, in the machine tools 11 to 13, after clamping the pallet to the work table of the work support device 30, the spindle head 21 is moved in the X and Z directions, and the work support device 30 is moved in the Y direction. Execute the machining operation.
[0024]
In parallel with this, the transfer transfer device 15 transfers the pallet transferred from the machine tool 13 to the return mechanism 17, and the return mechanism 17 returns the pallet to the carry-in / out device 14. In this case, the carry-in / carry-out device 14 operates the nutrunner mechanism to release the workpiece on the returned pallet from adhering to the pallet, and waits for unloading by the operator and loading of the next unprocessed workpiece.
[0025]
In such a machining system, it is necessary to access the back portion of the spindle head 21 that cannot be reached from the front of the machine tool for periodic inspection and troubleshooting when an abnormality occurs. In this case, an operator or maintenance personnel goes around the rear part of the machining system, particularly the rear part of the target machine tool, removes the bolt 66 with the other hand while holding the handle bar 67 of the stair apparatus 60 with one hand, and removes the stair base. The material 61 is swung outwardly from the auxiliary base 40 and the rubber roller 68 at the upper end is seated on the floor surface.
[0026]
As a result, an operator or maintenance personnel can walk up on the step 63 of the staircase device 60 and reach the auxiliary base 40 and the base 20 through the passage on the right side of the control box 50. Or, remove the abnormality.
In a normal non-use state, the base material 61 of the staircase device 60 is fixed to the clasp 65 by a bolt 66 and is held in an upright position indicated by a chain line in FIG. In such an upright position, the outer surface (the lower surface in the inclined state) of the staircase base 61 is substantially aligned with the surface of the closed doors 50b and 50c of the control box 50, so that workers, maintenance personnel, or other persons It also functions as a gate that prevents unintentional or inadvertent getting on the machine tool. Further, the staircase base 61 functions as a cover because it is formed of a flat iron plate, and cuts off the machine tool space and the external space of the machine tool, and the passage of chips and other impurities between these spaces. To prevent.
[0027]
Further, when the upper end of the staircase base 61 is seated on the floor surface, the pair of rubber rollers 68 acts as a buffer, and absorbs the roll of the staircase base 61 due to the uneven flatness of the floor surface.
In the above-described embodiment, the staircase base 61 is formed by bending a flat iron plate. However, the staircase base 61 may be formed by a ladder-like frame, and a thin flat cover may be attached to the frame.
[0028]
In the above-described embodiment, the auxiliary base 40 having an iron plate welded structure is disposed at the rear portion of the base 20 of each machine tool 11 to 13. However, the auxiliary base 40 and the base 20 are integrally formed of the same material (for example, Or a cast product). In this respect, the term “base” in the claims of the present invention is intended to comprehensively mean both a separate configuration and an integrated configuration.
[0029]
Furthermore, the form of the machine tool can be applied to various machine tools for various cutting, grinding or plastic working other than the above-described configuration.
[0030]
【The invention's effect】
As described above, according to the invention according to claim 1, the lower end of the stair base material constituting the staircase is pivotally attached to the upper part of one side surface of the base so that it can be swung between the upright position and the inclined position. Therefore, it is prevented that an operator etc. move with respect to a base during a walk like the conventional staircase set separately with respect to the base of a machine tool. In addition, since it is securely held by the holding means in the upright position, it is possible to prevent an operator or the like from getting on the machine tool unintentionally or carelessly.
[0032]
Further , when a plurality of machine tools are arranged adjacent to each other in the direction perpendicular to the longitudinal direction, the rear surface of each machine tool can be reliably closed by the cooperation of the control box and the stair device, and each machine tool can be closed. In the case of inspection, etc., it is possible to easily access the target machine tool on the machine. By securing this access path, the space between adjacent machine tools can be reduced. Furthermore, since the staircase base material is configured including the flat plate element, the staircase device can also be used as a cover function for blocking impurities such as chips.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of a machining system constituted by a plurality of machine tools provided with a stair device according to the present invention.
FIG. 2 is a partial rear view of the machine tool in FIG.
FIG. 3 is a rear side view of the machine tool showing a state in use of the stair device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Processing system 11-13 ... Machine tool 20, 40 ... Base 30 ... Work support device 21 ... Spindle head 50 ... Control box 60 ... Stair device 61 ... Stair base material 63 ... Step 65 ... Stopper

Claims (1)

Each machine tool has a rectangular parallelepiped base, a support device disposed at the front portion of the base in the longitudinal direction and supporting the workpiece, and a spindle disposed at the center portion of the base in the longitudinal direction and rotatably supporting the tool spindle. A machine tool comprising a head device and a control box arranged at a rear portion in the longitudinal direction of each base, and a plurality of machine tools arranged so that the bases are adjacent in a direction perpendicular to the longitudinal direction. The control box is placed at its adjacent right angle so as to leave an access passage allowing access to the operator's machine between one corner of the rear of the base and the side of the control box facing the corner. two sides are arranged close to the other corner of the base of the rear part of the corresponding machine tool, the parts constituting the access path on the base, the base and the lower end of the staircase base An upright position pivotally attached to the rear portion and an upright position that opens outward from the rear side surface of the base, and an inclined position that is in an inclined state in which an upper end is seated at a position separated from the rear side surface on the floor surface on which the base is installed; The control box and the staircase base are provided as a cover function by attaching to the staircase substrate a flat plate element that is provided so as to be pivotable between the plate and that closes a region occupied by the staircase base material in the upright state of the staircase base material. Closing the rear surface of each machine tool in cooperation with the material, and attaching the step of presenting a horizontal surface for walking upward in the inclined position state of the staircase base material to the staircase base material , An on-boarding stairway device for a machine tool, characterized in that holding means for holding the staircase base material in the upright position is provided.

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