JP4400011B2 - Machine Tools - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a machine tool having two processing devices, such as a two-axis lathe, and more particularly to a partition cover provided in the machine.
[0002]
[Prior art]
In an automatic operation machine tool such as an NC machine tool, a machine body cover surrounding a machining area is provided. In the case of a parallel twin-axis lathe, the machine body cover is provided with a partition cover that partitions the left and right machining areas from each other. In such a machine tool, in order to make it easier for the operator to perform maintenance work, the partition cover is made swingable by a hinge, and the work is performed by swinging to a machining area opposite to the working area. The thing which made space wide is proposed (for example, actual fair 1-8276).
[0003]
[Problems to be solved by the invention]
Since the swing type partition cover in the above conventional example is attached to the drive unit cover that spans the left and right machining areas via hinges, the drive unit cover and the partition cover serve as a vibration transmission medium and vibrate each other. May be adversely affected on machining accuracy. When precision machining is performed or when machining that generates large vibrations is performed on either the left or right machining equipment, the above-described vibration transmission has a great influence on machining accuracy.
[0004]
An object of the present invention is generated in each processing machine while providing a partition cover for preventing chips generated by machining from scattering outside the machining area in a single machine tool having two machining machines. This is to prevent vibrations from being transmitted to each other through the partition cover and the body cover.
Another object of the present invention is to facilitate maintenance.
[0005]
[Means for Solving the Problems]
The machine tool according to the present invention is a single machine tool having a separation type bed separated into right and left, and two left and right processing devices respectively installed on the left and right bed portions of the separation type bed. A left body cover and a right body cover that are supported by the bed portion and the right bed portion, respectively, and surround the processing area are provided, and the left body cover and the right body cover are respectively processed regions by the left and right processing devices. A left partition cover and a right partition cover.
According to this configuration, the left machine cover and the right machine cover that respectively surround the left and right machining areas are provided, and the left machine cover and the right machine cover cover the left and right machining areas, respectively. Since it has a parting cover, it is possible to prevent the chips and coolant generated by the processing equipment in each processing area from scattering outside the machine, and the chips and coolant to be scattered in the other processing area. Prevented by a partition cover. The left and right airframe covers are separately installed on the left and right bed portions of the separate bed separated into left and right, and the partition covers are also provided separately on the left and right airframe covers. The cover and the partition cover serve as a vibration transmission medium, and vibrations generated by the left and right processing devices are prevented from being transmitted to each other. Therefore, it is possible to perform high-precision and high-quality machining without deterioration of machining accuracy and machining quality due to vibration transmission.
The above-mentioned meaning of “one machine tool” means a machine tool that apparently becomes one machine tool.
[0006]
The left portion partition cover and the right portion the partition cover is Ru der those pivotable to spread the work area for the processing equipment of the partition side.
In this configuration, airframe covers are provided separately on the left and right sides, and the partition covers can be swiveled while the airframe covers are provided on each airframe cover, ensuring the prevention of chips from scattering between the left and right machining areas and outside the machine. In addition, while ensuring avoidance of vibration transmission, it is possible to widen the work area for maintenance and the like for the left and right processing devices.
[0007]
When the left and right partition covers can be turned as described above, there are provided fixing means for fixing the left partition cover and the right partition cover at the central position which is the closed position, and the fixing means are fixed by the fixing means. The left partition cover and the right partition cover may not be in contact with each other in the state.
As described above, since the left and right partition cover fixing means are provided, the partition cover can be turned to the other processing region side, and in the closed state, the interval between the two partition covers is secured, and the partition covers are brought into contact with each other. Vibration transmission between the left and right processing equipment is prevented. Therefore, the vibration transmission between the left and right processing devices is further reliably prevented.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. 1 and 2 show a front view and a plan view of the machine tool of this embodiment, respectively. As shown in FIG. 3, this machine tool has two processing devices 1A and 1B arranged side by side, and the left and right processing portions 2A and 2B in the separated bed 2 separated from left and right are processed to the left and right. The devices 1A and 1B are mounted. The left bed portion 2A and the right bed portion 2B are installed separately from each other on the floor surface. It should be noted that the left and right bed portions 2A and 2B need only be installed so as not to be able to transmit vibrations when installed on the floor surface. For example, the left and right bed portions 2A and 2B are connected to transport the machine. A member (not shown) may be left in a disconnected state after installation. Independently of the left and right bed portions 2A and 2B, as shown in the front view and the plan view in FIGS. 5 and 6, the support columns 3 and 3 are installed apart on the left and right sides of the arrangement of both bed portions 2A and 2B. A portal frame 6 is configured by connecting the upper ends of both supports 3 with a horizontal frame member 5. A machine control panel 7 is installed at the rear of the portal frame 6 as shown in FIG. As shown in the left side view of FIG. 9, the left and right columns 3 of the portal frame 6 are composed of two front and rear column members 3A and 3B, and a beam member 4 is interposed between the upper ends of both column members 3A and 3B. It is connected.
[0009]
This machine tool is a turret type parallel twin-axis lathe. As shown in FIG. 3, each processing apparatus 1A, 1B has a main shaft 8 and a turret 9 corresponding thereto. The turret 9 is a frontal polygonal drum-shaped tool support with each peripheral surface station serving as a tool station, and can be moved back and forth (in the Z-axis direction) and left and right (in the X-axis direction) and can be indexed and rotated. It has been. Above both the processing machines 1A and 1B, a loader 11 (FIGS. 1 and 2) that runs in the left-right direction is installed along a rail 10 provided on the horizontal frame member 5 of the portal frame 6. . The loader 11 is of a gantry type, and is provided with a front / rear moving base 13 on a traveling body 12 traveling on the rail 10, and an elevating rod 14 is provided on the front / rear moving base 13 so as to be movable up and down (Y-axis direction). A loader head 15 for gripping a workpiece is provided at the lower end of the rod 14. The moving range of the loader 11 is covered with a loader cover 30.
[0010]
On one side of the machine tool, a rotary type work feeder 18 is installed for rotating a pallet 16 on which a workpiece is placed on a rotary circuit 17 in a predetermined circulation path. The loader 11 supplies the workpiece from the pallet 16 of the workpiece feeder 18 to the spindle 8 of the processing equipment 1A, 1B and unloads the workpiece from the spindle 8 to an unloading position (not shown).
[0011]
As shown in FIG. 1, the installation parts of both processing devices 1 </ b> A and 1 </ b> B are covered with a machine body cover 19 and a lower cover 20. The machine body cover 19 includes independent left and right machine body covers 19A and 19B that respectively cover the left and right processing devices 1A and 1B. Each machine body cover 19A, 19B is composed of an upper fixing portion 21, a lower fixing portion 22, and a slide door 23. The processing areas 24A, 24B corresponding to both processing devices 1A, 1B as shown in FIG. It can be opened and closed. The airframe covers 19A and 19B are supported by the left and right bed portions 2A and 2B via support members 25 and 26, respectively, as shown in a plan view in FIG. Specifically, the lower fixing portions 22 of the body covers 19A and 19B are supported by the bed portions 2A and 2B. The upper fixing portion 21 is a driving portion cover that covers the driving chambers adjacent to the processing regions 24A and 24B, and is supported by the left and right bed portions 2A and 2B, respectively. The lower cover 20 is an integral cover member that covers the installation portions of the left and right bed portions 2A and 2B, and is installed on the floor surface.
[0012]
As shown in FIG. 5, transportation frame support jigs 27 and 27 are installed on the left and right bed portions 2A and 2B, respectively. The carrying frame support jigs 27, 27 are columnar members. The horizontal frame member 5 of the portal frame 6 is coupled to the upper end of the frame support jig 27 with fasteners such as bolts when the machine tool is transported as shown in FIG. Thereby, at the time of conveyance, the portal frame 6 is supported by the left and right bed portions 2A and 2B via the frame support jig 27. After the machine tool is installed, the upper end of the frame support jig 27 is released from the horizontal frame member 5 of the portal frame 6 as shown in FIG. In the figure, a gap d is formed below the horizontal frame member 5. Thereby, the portal frame 6 is completely separated from the left and right bed portions 2A, 2B. When the machine tool is installed, a shim for height adjustment is inserted between the lower end of the support column 3 of the portal frame 6 and the floor surface, so that the thickness of the shim is as shown in FIG. The horizontal frame member 5 is slightly lifted from the upper end of the separated frame support jig 27.
The frame support jig 27 is composed of front and rear column members 27A and 27B and beam members 28 that connect the upper ends of both column members 27A and 27B, as in the column 3 of the portal frame 6. As shown in the rear view in FIG. 7, the beam member 4 of the support column 3 and the beam member 28 of the frame support jig 27 include a bracket 31 fixed to the beam member 4 and the beam member 28 when the machine tool is transported. It is integrated by connecting the bracket 32 fixed to the bracket 32 with a fastener such as a bolt, and after installation, the connection between the brackets 31 and 32 is canceled. By removing this connection and releasing the connection with the horizontal frame material 5 at the upper ends of the column members 27A and 27B of the frame support jig 27 described above, the frame support jig 27 can be separated from the portal frame 6 described above. Become.
[0013]
As shown in FIG. 4A and FIG. 13, the left partition cover 29A and the right cut cover 29B that partition the left and right processing devices 1A and 1B are rotated at the rear edges at the center positions of the processing regions 24A and 24B. A hinge member 33 such as a hinge is installed at the center so as to be able to turn left and right. Each partition cover 29A, 29B is installed by the hinge member 33 at a fixed portion (for example, the upper fixed portion 21) of the corresponding left and right body cover 19A, 19B. The swivel ranges of the left and right partition covers 29A and 29B are swung from the processing areas 24A and 24B on the side where the body covers 19A and 19B are closed by the partition covers 29A and 29B to the other processing areas 24B and 24A. It is possible.
[0014]
For each of the left partition cover 29A and the right partition cover 29B, as shown in FIGS. 4 and 12, fixing means 34 and 34 for fixing at the center position as the closed position are left and right machine body covers 19A and 19B. Is provided. These fixing means 34 and 34 are provided in the lower fixing part 22, for example. In the state of being fixed by the fixing means 34, 34, the left partition cover 29A and the right partition cover 29B are kept spaced so as not to contact each other.
As shown in an enlarged view in FIG. 14, each fixing means 34 is provided at an engaged portion 35 provided on each partition cover 29 </ b> A, 29 </ b> B, and a fixed portion of the body cover 19 </ b> A, 19 </ b> B, and is engaged at 35 And an engaging portion 36 that can be engaged and disengaged. The engaged portion 35 is made of a member having a locking hole 35a. The engaging portion 36 includes a locking pin 36a that is detachably engaged with the locking hole 35a, and is installed on the pin support member 36b so as to be able to advance and retract. The locking pin 36a is an urging force of a spring member or the like. The member 37 is biased in a direction to engage with the locking hole 35a. FIG. 14 shows a state in which the locking pin 36 a is pulled out against the biasing member 37.
[0015]
As shown in FIG. 13, with respect to the partition covers 29A and 29B, the slide door 23 is in contact with the side surfaces of the partition covers 29A and 29B in the closed state.
[0016]
According to the machine tool having this configuration, the left machine cover 19A and the right machine cover 19B are provided so as to surround the left and right machining areas 24A and 24B, and the left and right machine areas 19A and 19B are respectively provided with the left and right machining areas 24A and 24B. Since the left partition cover 29A and the right partition cover 29B are provided, the chips and coolant generated by the processing devices 1A and 1B in each processing region 24A and 24B are prevented from being scattered outside the machine, Each of the partition covers 19A and 19B prevents chips and coolant from being scattered in the other processing regions 24A and 24B. Therefore, the left and right processing devices 1A and 1B can be operated in an independent state.
The left and right machine body covers 19A and 19B are separately installed on the left and right bed parts 2A and 2B of the separated bed 2 separated into left and right, respectively, and the partition covers 29A and 29B are also provided on the left and right machine bodies. Since the covers 19A and 19B are provided separately, the machine body covers 19A and 19B and the partition covers 29A and 29B serve as a vibration transmission medium to prevent vibrations generated by the left and right processing devices 1A and 1B from being transmitted to each other. Is done. Therefore, it is possible to perform high-precision and high-quality machining without deterioration of machining accuracy and machining quality due to vibration transmission.
[0017]
Further, since the left and right partition covers 29A and 29B can be swiveled, two points are shown in FIG. 13 when maintenance is performed with one of the processing devices 1A and 1B, for example, when the chuck of the spindle 8 is replaced. As indicated by the chain line, by rotating both the partition covers 29A and 29B toward the other processing regions 24A and 24B, it is possible to secure a sufficient space for the operator to replace the spindle chuck. In FIG. 13, a two-dot chain line indicates a state where the two-dot chain line is rotated to the processing region 24 </ b> A side for maintenance of the processing device 1 </ b> B (FIGS. 3 and 4A). When performing maintenance of the processing equipment 1A, it is turned to the opposite side.
As described above, the partition covers 29A and 29B are separately provided on the left and right sides, and can be turned. Therefore, it is possible to reliably prevent chips and coolant from scattering between the left and right machining areas 24A and 24B, and to prevent scattering outside the machine and transmit vibrations. The work area for each of the left and right processing devices 1A and 1B can be expanded while ensuring avoidance of the above.
[0018]
The left and right partition covers 29A and 29B are pivotable, but are provided with a fixing means 34 that is fixed at the central position that is the closed position. In the closed state, the distance between the partition covers 29A and 29B (the state shown by the solid line in FIG. 13) Therefore, vibration transmission between the left and right processing devices 1A and 1B due to mutual contact of the partition covers 29A and 29B is prevented. Therefore, the vibration transmission between the left and right processing devices 1A and 1B is further reliably prevented.
[0019]
In this machine tool, the columns 3 and 3 are installed separately on the left and right sides of the arrangement of the two beds 2 independently of the left and right beds 2 and 2 installed separately from each other on the left and right. A gate frame 6 is formed by connecting the upper ends with a horizontal frame member 5, and a machine control panel 7 is installed on the portal frame 6. Therefore, the machine control panel 7 serves as a vibration transmission medium and is processed on one side. The vibration of the device 1 can be prevented from being transmitted to the other processing device 1. Further, since the rail 10 of the loader 11 is also installed on the horizontal frame material 5 of the portal frame 6, the rail 10 of the loader 11 is also prevented from being a vibration transmission medium.
Of the machine body covers 19 and 20 that cover both the processing devices 1 and 1, the upper machine body cover 19 is constituted by independent partial covers 19A and 19B that respectively cover the left and right processing devices 1 and 1, respectively. Since the machine body cover 20 is directly installed on the floor surface, vibration of one processing device 1 is also prevented from being transmitted to the other processing device 1 via the body cover 19, 20.
[0020]
【The invention's effect】
The machine tool according to the present invention is a single machine tool having a separation type bed separated into right and left, and two left and right processing devices respectively installed on the left and right bed portions of the separation type bed. A left body cover and a right body cover that are supported by the bed portion and the right bed portion, respectively, and surround the processing area are provided, and the left body cover and the right body cover are respectively processed regions by the left and right processing devices. Since it has the left part partition cover and the right part partition cover which partition each other, in a single machine tool having two processing devices, a partition for preventing chips generated by processing from scattering outside the processing regions While providing a cover, vibrations generated by individual processing equipment should not be transmitted to each other via the partition cover or machine cover. It can be.
The left portion the partition cover and the right portion the partition cover, because of the pivotable to spread the work area for the processing equipment of the partition side, respectively, sufficient working area is obtained, thereby facilitating the maintenance.
Fixing means for fixing the left partition cover and the right partition cover at a central position as a closed position is provided, and the left partition cover and the right partition cover are not in contact with each other when fixed by the fixing means. In this case, while the partition cover can be turned to the other processing area side, the space between the two partition covers is secured in the closed state, and the vibration between the left and right processing devices due to the mutual contact of the partition cover. Transmission is prevented.
[Brief description of the drawings]
FIG. 1 is a front view of a machine tool according to an embodiment of the present invention.
FIG. 2 is a plan view of the machine tool.
FIG. 3 is a perspective view showing a processing device and a bed of the machine tool.
4A is an external perspective view showing a sliding door open state of the machine tool, and FIG. 4B is an external perspective view showing a closed state of the machine tool.
FIG. 5 is a front view showing a configuration of a portal frame in the machine tool.
FIG. 6 is a plan view of the same type frame.
FIG. 7 is a rear view showing the support beam material of the same type frame and the beam material of the carrying frame supporting jig.
FIG. 8 is a right side view of the loader cover.
FIG. 9 is a left side view of the portal frame.
10A is an enlarged view of a portion A in FIG. 5, and FIG. 10B is an enlarged view showing a gate-type frame coupling release state in the same portion.
FIG. 11 is a plan view showing a mounting structure of a lower fixing portion in the body cover.
FIG. 12 is a cross-sectional view of an airframe cover.
FIG. 13 is a cutaway plan view of the partition cover.
FIG. 14 is an enlarged cutaway side view of the fixing means.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1A, 1B ... Processing part 2 ... Separation type bed 2A ... Left bed part 2B ... Right bed part 3 ... Post 7 ... Machine control board 11 ... Loader 19 ... Airframe cover 19A ... Left partition cover 19B ... Right partition cover 20 ... Lower cover 23 ... Slide door 24A ... Left machining area 24B ... Right machining area 29A ... Left machine cover 29B ... Right machine cover 30 ... Loader cover 33 ... Hinge member 34 ... Fixing means 35 ... Engaged part 36 ... Joint

Claims (2)

In a single machine tool having a separate bed separated into left and right, and two left and right processing devices respectively installed on the left and right bed portions of the separate bed, the left and right bed portions A left body cover and a right body cover that are respectively supported and enclose a processing area are provided, and the left body cover and the right body cover are each a left partition cover that partitions each processing area by the two right and left processing devices. and have a right portion the partition cover, the left portion the partition cover and the right portion the partition cover is machine tool pivotable to spread the work area for the processing equipment of each partition side. Fixing means for fixing the left partition cover and the right partition cover at a central position as a closed position is provided, and the left partition cover and the right partition cover are not in contact with each other when fixed by the fixing means. The machine tool according to claim 1, which is configured as described above.

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