JP6979124B2 - Mobile work module - Google Patents

Description

In the present invention, the work machine is mounted so that the center of gravity is located at the front of the traveling bed moving on the rail, and in addition to the front and rear wheels, an intermediate wheel that functions when the vehicle is pulled out to the rear is provided. Regarding mobile work modules that have been made.

When a predetermined machining is performed on a work through a plurality of processes, a machining machine line is used in which a plurality of working machines including a machine tool are arranged and the work is conveyed to each working machine by an autoloader. .. In the processing machine line disclosed in Patent Document 1 below, a plurality of working machines are mounted on a base and arranged so as to be arranged in the width direction of the machine body. And since the work machines are arranged at narrow intervals, maintenance and parts replacement cannot be performed as they are, but since the modular work machines are configured to move on the base, the work It is easier for people to perform maintenance and other work.

Specifically, the work machine is mounted on a traveling bed having four wheels on the front, back, left and right. In particular, each work machine such as a lathe, a machining center, or an inspection device is mounted on a standardized running bed and is configured as a mobile work module. Rails of a certain width are laid on the base, and the arrangement of any mobile work module can be arbitrarily selected, and a processing machine line of any combination can be configured. Therefore, as described above, the mobile work module can be pulled out in the front-rear direction of the machine body orthogonal to the arrangement direction at the time of maintenance or parts replacement.

International Publication WO2015 / 307147 Japanese Unexamined Patent Publication No. 2009-52631

The drawer of the mobile work module in the processing machine line needs to be moved to a position where the inside of the work machine does not overlap with the adjacent mobile work module so that the work such as maintenance by the operator can be easily performed. Therefore, the rails laid on the base had to be lengthened to accommodate the range of movement of the mobile work module. That is, the rail needs to have a length that allows the mobile work module to be moved to the drawer position as well as the normal position where the work is processed. However, while this makes it easier for workers to perform maintenance and other work, providing rails that are not normally used has caused an increase in the cost of the processing machine line.

Therefore, an object of the present invention is to provide a mobile work module for shortening the rail length in order to solve such a problem.

The mobile work module according to one aspect of the present invention has a traveling bed provided with a pair of left and right front wheels, intermediate wheels and rear wheels that can roll on two rails, and the center of gravity is located on the front wheel side. anda onboard working machine on the traveling bed, said intermediate wheel, be one that supports the working machine in place of the rear wheel which deviates from the rail, said between said front wheel It is arranged so that the center of gravity of the work machine is located.

According to the above configuration, when the work machine mounted on the traveling bed moves along the rail and is in the normal position on the rail to perform a predetermined work, the rear wheel supports a part of the whole. When the vehicle is moved to the rear side drawer position for maintenance or the like, the front wheel and the intermediate wheel support the entire vehicle, so that a rail for moving the rear wheel to the drawer position becomes unnecessary.

It is a perspective view which showed an example of a processing machine line. It is a side view of the internal structure which showed the mobile work module which is a machine tool. It is a side view of the internal structure which showed the state which the mobile work module which is a machine tool is in a drawer position. It is a figure which showed the position of the center of gravity of the mobile work module which is a machine tool. It is a perspective view which showed the two mobile work modules arranged on the base.

Next, an embodiment of the mobile work module according to the present invention will be described below with reference to the drawings. In this embodiment, as a mobile work module, a machine tool constituting a machining machine line will be described as an example. FIG. 1 is a perspective view showing an example of the processing machine line. In the processing machine line 1 of the present embodiment, six mobile work modules 3 are arranged side by side. The mobile work module 3 is assembled on a standardized traveling bed for each work machine such as a machine tool, and is covered with an exterior cover 5 having a unified overall shape and dimensions.

In the processing machine line 1, a machine tool such as a lathe, an inspection machine for measuring the dimensions of a work, a washing machine, or the like is configured as a mobile work module 3, and is arbitrarily combined according to the processing content of the work. FIG. 2 is a side view of an internal structure showing a mobile work module 3 of a machine tool, which is one of them. The machine tool 10 is a turret lathe provided with a rotary tool such as an end mill or a drill, or a cutting tool such as a tool bit. Specifically, a spindle device 11 having a spindle chuck 16 that grips and holds the work W, a turret device 12 provided with a tool 32, and a Z-axis drive device that moves the turret device 12 in the Z-axis direction or the X-axis direction. It is composed of 13 and an X-axis drive device 14, and a control device 15 for driving and controlling each device.

The machine tool 10 is assembled so that the rotation axis (spindle) of the spindle device 11 for rotating the work W is in the front-rear direction of the machine and is horizontal. Therefore, in the present embodiment, the Z-axis direction is the horizontal direction parallel to the main axis of the spindle device 11, the X-axis is the vertical direction of the machine body orthogonal to the Z-axis, and the Y-axis direction is the Z-axis and X. The width direction of the aircraft is orthogonal to the axis. The machine tool 10 has a compact design in which the Z-axis and the X-axis are machining axes for moving the tool 32 with respect to the work W, and the dimensions in the Y-axis direction in which the tool 32 does not move, that is, in the machine width direction are reduced. ing.

In the machine tool 10, a column 26 is erected adjacent to the spindle device 11, and a turret device 12 and a drive device for moving the turret device 12 in the machining axis direction are configured above the spindle device 11. The spindle device 11 is configured such that a spindle chuck 16 is integrally formed with a spindle supported rotatably, and the rotation of the spindle motor 21 for the spindle is transmitted. The turret device 12 is integrally configured with the Z-axis slide 23 that slides in the Z-axis direction, and is mounted on the X-axis slide 27 that slides in the X-axis direction together with the Z-axis slide 23.

In the Z-axis drive device 13, a support frame is fixed to the Z-axis guide 24, a screw shaft 25 is attached to the support frame via a bearing, and the screw shaft 25 is screwed into a non-rotating nut in the Z-axis slide 23. A ball screw mechanism is configured. The rotation of the Z-axis servomotor 22 is transmitted to the screw shaft 25, and the Z-axis slide 23 is horizontally moved via the ball screw mechanism. On the other hand, an X-axis drive device 14 is assembled to a column 26 installed next to the spindle device 11, and a Z-axis guide 24 is fixed to the X-axis slide 27.

In the X-axis drive device 14, the X-axis slide 27 is slidably assembled in the vertical direction via a guide formed in the column 26. A screw shaft 28 arranged in the vertical direction is rotatably supported on the column 26, and the screw shaft 28 is screwed into a non-rotating nut in the X-axis slide 27 to form a ball screw mechanism. The rotation of the X-axis servomotor 29 is transmitted to the screw shaft 28, and the X-axis slide 27 is moved up and down via the ball screw mechanism. As described above, the machine tool 10 has a configuration in which the turret device 12, the Z-axis drive device 13, and the X-axis drive device 14 are supported by the column 26 located next to the spindle device 11.

In the machine tool 10, the spindle device 11, the turret device 12, the Z-axis drive device 13, the X-axis drive device 14, and the control device 15 are assembled to a traveling bed 18 running on a rail 201 having a constant width laid on the base 2. , Is configured as the mobile work module 3 shown in FIG. By modularizing in this way, a work machine such as a machine tool 10 is compactly configured, and as shown in FIG. 1, a machine tool line 1 in which mobile work modules 3 are arranged close to each other is also compact. On the other hand, since the mobile work module 3 has a configuration in which the traveling bed 18 moves in the front-rear direction of the machine along the rail 201, maintenance and parts replacement are performed for the worker even though the distance from the neighbor is narrow. It is easier (see Fig. 5).

As shown in FIG. 2, the machine tool 10 has a position where the turret device 12 is separated from the column 26 in front of the machine body (right side in the drawing) as an evacuation position (swivel indexing position of the turret device 12), and the turret device 12 and the spindle thereof. The space 20 between the chuck 16 and the chuck 16 is configured as a processing chamber. The movable machine tool 10 has a position on the base 2 shown in FIG. 2 as a normal position for executing workpiece machining. The rail 201 has a structure in which each part of the traveling bed 18 in contact with the front wheel 31 and the rear wheel 32 is partially replaceable according to the normal position of the machine tool 10. This is because the vibration during processing causes more wear than other parts.

The base 2 provided with such a rail 201 is desired to be reduced in size in order to reduce the cost. The base 2 of the present embodiment is configured to have a size suitable for the mobile work module 3. Therefore, in the case of the machine tool 2, since the machining of the work W is performed in front of the machine tool (right side in FIG. 2), the traveling bed 18 can be moved forward by the space 20 constituting the machining chamber. On the other hand, since the base 2 is not formed in a size that allows movement on the rear side, it cannot move to the rear side as it is.

However, the mobile work module 3 that requires maintenance and parts replacement, such as the machine tool 10, must pull out a part of the machine tool to the rear side in order to enable the work. Therefore, among the plurality of mobile work modules 3 so far, the guide 7 is provided at the rear part of the base 2 as shown by the alternate long and short dash line for the corresponding one such as the machine tool 10, and the guide rail 701 laid there is used to rearward the guide 7. It was possible to withdraw to. However, in this case, although the size of the base 2 is suppressed for cost reduction, the cost is increased by the guide 7.

Therefore, the mobile work module 3 (machine tool 10) of the present embodiment has a configuration in which an intermediate wheel 33 is further added to a traveling bed 18 provided with a front wheel 31 and a rear wheel 32. More specifically, the traveling bed 18 is provided with a pair of left and right front wheels 31, rear wheels 32, and intermediate wheels 33 that roll on the two rails 201. Here, as shown in FIG. 2, when the machine tool 10 is arranged at a normal position where the machine tool 10 is executed, the traveling bed 18 is in contact with the rail 201 with the front wheels 31 and the rear wheels 32 in contact with the machine tool 10. It will support the whole.

Further, since the machine tool 10 is required to have machining accuracy in micron units, even if it is configured to be movable by the traveling bed 18, in the arrangement at the normal position shown in FIG. 2, vibration during machining is suppressed and stable. Is required. Therefore, the machine tool 10 is designed to be as large as possible between the front wheels 31 and the rear wheels 32, which receive the entire load, while being compact. On the other hand, maintenance and parts replacement performed by workers are not required to be as stable as when machining a workpiece if safety is ensured. Therefore, in the present embodiment, an intermediate wheel 33 that receives a load is provided instead of the rear wheel 32. That is, in the case of maintenance or the like, the machine tool 10 is supported by a short distance between the front wheel 31 and the intermediate wheel 33.

By the way, in the machine tool 10, since the column 26 supporting the spindle device 11 and the Z-axis drive device 13 is arranged unevenly on the front portion of the traveling bed 18, the entire center of gravity is located on the front portion of the traveling bed 18. positioned. In this regard, in the case of the processing machine line 1, since the autoloader moves inside the front cover 6 (see FIG. 1) to deliver the work, the center of gravity of the other mobile work modules 3 is in front of the traveling bed 18. It is located in the department. Therefore, as shown in FIG. 3, the center of gravity is located between the front wheel 31 and the intermediate wheel 33 having a narrow interval even when the entire is supported by the front wheel 31 and the intermediate wheel 33 (see FIG. 4). ..

The front wheels 31, the rear wheels 32, and the intermediate wheels 33 of the traveling bed 18 roll on the rail 201 to enable the machine tool 10 to move, and at a predetermined stop position, each function as a support member that receives a load. But it is also. The rear wheel 32 plays a role in the normal position where the work is processed (FIG. 2), and the intermediate wheel 33 plays a role in the drawer position where maintenance or the like is performed (FIG. 3).

Although it is not clear in the drawing, when the machine tool 10 is arranged in the normal position, the non-functional intermediate wheel 33 is in a non-contact state with the rail 201 so as not to receive a load. On the other hand, the rear wheel 32 does not function when the machine tool 10 is pulled out. Therefore, it becomes possible to omit the guide 7 (rail 701) shown in FIG. 2, which has been conventionally used, and the rear wheel 32 is in a state of being removed from the rail 201 at the drawer position shown in FIG.

Further, in the present embodiment, when the machine tool 10 is in the normal position shown in FIG. 2, the gap between the intermediate wheel 33 and the rail 201 is designed to be 1 mm or less. This means that the machine tool 10 moves between the normal position shown in FIG. 2 and the drawer position shown in FIG. 3 by pushing and pulling the operator, but at that time, the rear wheel 32 comes off the rail 201 and comes off. This is to ensure that the state change is smoothly performed when the wheel state is reached or when the rail 201 rides on the rail 201 and returns to the support state where the load is received.

Next, FIG. 4 is a diagram showing the position of the center of gravity of the machine tool 10 with a cross. Since the machine tool 10 in the drawer position is entirely supported by the front wheel 31 and the intermediate wheel 33, the center of gravity may be positioned between the front wheel 31 and the intermediate wheel 33 as indicated by a cross. Then, in order to facilitate maintenance and the like by the operator at the drawer position, it is preferable that the machine tool 10 moves to the rear side, that is, the drawer amount is large. In order to increase the withdrawal amount, it is necessary to shorten the distance between the front wheel 31 and the intermediate wheel 33. On the other hand, in order to maintain stability, a certain distance between the front wheel 31 and the intermediate wheel 33 is required.

Therefore, in the present embodiment, the intermediate wheel 33 is arranged so that the center of gravity is closer to the intermediate wheel 33 than the intermediate position S between the front wheel 32 and the intermediate wheel 33 while ensuring a certain distance between the front wheel 31 and the intermediate wheel 33. The position is designed. In the machine tool 10, the Z-axis drive device 13 is driven at the time of pulling out to the rear, the turret device 12 is moved to the intermediate wheel 33 side as shown in the figure, and the intermediate wheel 33 is based on the position of the center of gravity in that state. The position may be designed. The position of the intermediate wheel 33 is more specifically the position of the rotation axis of the intermediate wheel 33.

Next, FIG. 5 is a perspective view showing two mobile work modules 3 (machine tools 10A and 10B) arranged on the base 2. The base 2 has two sets of rails 201 laid in two sets, and two mobile work modules 3 can be mounted as shown in the figure. Therefore, the processing machine line 1 shown in FIG. 1 uses three bases 2. FIG. 5 shows a state in which the machine tool 10A is pulled out backward as shown in FIG. 2 and the adjacent machine tool 10B is further moved forward from the position shown in FIG.

In the present embodiment, the machine tools 10A and 10B move in the opposite directions in the front-rear direction, so that the inside of the target machine tool 10A is largely pulled out from the adjacent machine tool 10B, and maintenance and parts replacement by the operator Will be easier to do. At that time, since the machine tool 10A is supported by the front wheels 31 and the intermediate wheels 33, the rail 701 (see FIG. 2) for rolling the rear wheels 32 to the drawer position becomes unnecessary. That is, by providing the intermediate wheel 33 on the traveling bed 18, the role is divided between the intermediate wheel 33 and the rear wheel 32, and when the mobile work module 3 (machine tool 10A) moves to the drawer position. Since the rear wheel 32 does not function, it becomes possible to omit the guide 7 (rail 701), that is, to reduce the cost.

Although one embodiment of the present invention has been described above, the present invention is not limited to these, and various modifications can be made without departing from the spirit of the present invention.
For example, when the machine tool 10 is arranged in a normal position, the non-functional intermediate wheel 33 is in non-contact with the rail 201. Since this is in consideration of the configuration on the rail 201 side that receives the load, the intermediate wheel 33 may be in contact with the rail 201. Further, although the intermediate wheel 33 having a small diameter is shown in the drawing, it may be the same wheel as the front wheel 31 or the like.
Further, although the machine tool 10 (10A, 10B) has been described as an example, it is a working machine mounted on a traveling bed so that the center of gravity is located on the front wheel side, and it is necessary to pull it out to the rear. All you need is.

1 ... Machining machine line 2 ... Base 3 ... Mobile work module 7 ... Guide 10 (10A, 10B) ... Machine tool 11 ... Spindle device 12 ... Turret device 13 ... Z-axis drive device 14 ... X-axis drive device 15 ... Control device 18 ... Running bed 31 ... Front wheel 32 ... Rear wheel 33 ... Middle wheel 201 ... Rail 701 ... Guide rail

Claims (4)

A running bed with a pair of left and right front wheels, middle wheels and rear wheels that can roll on two rails.
A work machine mounted on the traveling bed so that the center of gravity is located on the front wheel side ,
Have,
The intermediate wheel supports the work machine in place of the rear wheel off the rail, and is a mobile work module arranged so that the center of gravity of the work machine is located between the middle wheel and the front wheel. .. The mobile work module according to claim 1, wherein the center of gravity of the work machine is located on the intermediate wheel side from an intermediate position between the intermediate wheel and the front wheel. The mobile work module according to claim 1 or 2, wherein the intermediate wheel is in a state of floating from the rail when the front wheel and the rear wheel are located on the rail. The mobile work module according to claim 3, wherein the intermediate wheel is formed in a state of being floated by a gap of 1 mm or less between the intermediate wheel and the rail.

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