Machine tool systems

Abstract

[Question] To suppress the reduction in workpiece machining accuracy caused by the vibration of the transport device and to suppress the deviation in the relative position of the transport device and the machine tool. [Solution] The machine tool system (10) comprises: a machine tool (20), which has a processing section (220) for processing a workpiece (W) through a tool (226), and a base (210) for carrying the processing section (220); a conveying device (30), which has two left and right legs (31) separated from the base (210), conveys the workpiece (W) and supplies the workpiece (W) to the processing section (220) or discharges the workpiece (W) from the processing section (220); and an elastically deformable plate (60), which connects the base (210) and the legs (31), the plate (60) being arranged upright with the plate surface (62) along the front-to-back direction, and the connection portion (66A) of the plate (60) with the base (210) and the connection portion (66B) with the legs (31) are offset in the front-to-back direction.

Description

Technical Field

[0001] The present invention relates to a machine tool system. Background Art

[0002] A machine tool system is known, comprising: a machine tool having a processing portion for processing a workpiece using a tool and a bed for mounting the processing portion; and a conveying device having a plurality of legs for conveying the workpiece and supplying the workpiece to the processing portion or discharging the workpiece from the processing portion (see Patent Document 1). In Patent Document 1, as Figure 9 As shown in FIG, a structure is disclosed in which the legs of the transport device are independently provided on the ground relative to the base of the machine tool. Figure 8 As shown, a structure is disclosed in which the legs of a transport device are placed on a base of a machine tool.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent No. 5708825 Summary of the Invention

[0006] In Patent Document 1 Figure 9 In the machine tool system shown, since the legs of the transport device are independently provided relative to the base of the machine tool, the vibrations during the operation of the transport device are less likely to be transmitted to the base, and the machining accuracy of the workpiece is less affected. However, since the base and the legs are independent, there is a possibility of relative deviation between the transport device and the machine tool, which may cause obstacles in the transfer of the workpiece between the transport device and the machine tool. In addition, in Patent Document 1, Figure 8 In the machine tool system shown, since the legs of the conveying device are placed on the base of the machine tool, it is difficult for the conveying device and the machine tool to deviate relative to each other. However, the vibration when the conveying device is driven is easily transmitted to the base (processing part), which may have a great impact on the processing accuracy of the workpiece.

[0007] An object of the present invention is to provide a machine tool system capable of suppressing a decrease in the machining accuracy of a workpiece due to vibration of a transport device and suppressing a deviation in the relative position of the transport device and the machine tool.

[0008] The machine tool system of the solution of the present invention comprises: a machine tool, which has a processing part that processes a workpiece by a tool, and a base on which the processing part is mounted; a conveying device, which has two left and right legs separated from the base, conveys the workpiece and supplies the workpiece to the processing part or discharges the workpiece from the processing part; and an elastically deformable plate that connects the base and the legs, the plate being uprightly arranged with the plate surface along the front-to-back direction, and the connection part of the plate with the base and the connection part with the legs are staggered in the front-to-back direction.

[0009] Effects of the Invention

[0010] The machine tool system of the aforementioned embodiment suppresses the transmission of vibrations of the transport device generated during workpiece transport or discharge to the base (processing unit), thereby preventing a decrease in workpiece processing accuracy. Furthermore, since the legs of the transport device are connected to the base via a plate, relative deviation between the transport device and the machine tool is limited, allowing for smooth transfer of workpieces between the two.

[0011] In the above-mentioned machine tool system, the processing unit may include a spindle that rotates while holding a workpiece, and the tool's cutting depth into the rotating workpiece may be determined by moving the tool in the left-right direction. This configuration can suppress a decrease in the positional accuracy of the tool's cutting depth into the workpiece. In the above-mentioned machine tool system, the legs may be arranged in contact with the loading surface of the loading base. This configuration allows the load of the transport device to be released onto the loading surface, while the plate maintains the left-right positional relationship between the legs and the base. In the above-mentioned machine tool system, the legs may be arranged vertically spaced from the loading surface of the loading base. This configuration allows the plate to support the load of the transport device and suppresses transmission of left-right vibrations to the base. In the above-mentioned machine tool system, the plate may have sufficient rigidity to support the load of the transport device in the vertical direction. This configuration allows the plate to reliably support the load of the transport device. In the above-mentioned machine tool system, the base may include a support portion that contacts the loading surface, and the legs may be arranged directly above or near the support portion, separated from the base. With this structure, since the load of the conveying device is applied directly above or near the supporting portion, the vibration of the leg can be transmitted to the loading surface as quickly as possible, and the generation of bending moments and the like on the base of the machine tool can be suppressed. In addition, in the above-mentioned machine tool system, a second leg may be respectively arranged behind the left and right legs, and a plate may connect the leg and the second leg arranged in the front-to-back direction to the base. With this structure, the leg and the second leg can be connected to the base by a plate. In addition, in the above-mentioned machine tool system, the connection portion of the plate to the base may be set between the connection portion to the leg and the connection portion to the second leg. With this structure, the vibration of the second leg in the left-right direction can be suppressed from being transmitted to the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A front view showing an example of the machine tool system according to the first embodiment.

[0013] Figure 2 yes Figure 1 Right side view of the machine tool system shown.

[0014] Figure 3This is a perspective view showing an example of a machine tool.

[0015] Figure 4 It is a perspective view of the lower right portion of the machine tool system according to the first embodiment.

[0016] Figure 5 It is a plan view showing an example of the arrangement of the base, legs, and connecting plates.

[0017] Figure 6 This is a diagram for explaining a workpiece processing operation, and shows a state where a workpiece is received from a workpiece supply unit by a conveying device.

[0018] Figure 7 This is a diagram for explaining the machining operation of a workpiece, and shows a state where the workpiece is being transported in the left-right direction by a transport device.

[0019] Figure 8 This is a diagram for explaining the machining operation of a workpiece, and shows a state where the workpiece is transported to the main spindle by the transport device.

[0020] Figure 9 This is a diagram for explaining the processing operation of a workpiece, and shows a state in which the workpiece is delivered to the workpiece discharge portion by the conveying device.

[0021] Figure 10 This is a schematic diagram showing a path through which vibration generated by the transport device is transmitted to the mounting surface in the machine tool system according to the first embodiment.

[0022] Figure 11 It is a perspective view of the lower right portion of the machine tool system according to the second embodiment.

[0023] Figure 12 This is a schematic diagram showing a path through which vibration generated by a transport device is transmitted to a mounting surface in a machine tool system according to a second embodiment. DETAILED DESCRIPTION

[0024] The following describes an embodiment. In the drawings referred to in the following description, for ease of description, each component may be described with a size different from its actual size, described larger than other components, described to emphasize other components, etc., or the scale may be appropriately changed. In addition, in the drawings, the directions of each component are described using an XYZ orthogonal coordinate system. The X direction represents the left and right direction of the machine tool system 10, with the +X direction being the right side when the machine tool system 10 is viewed from the front, and the -X direction being the left side. The Y direction represents the up and down direction of the machine tool system 10, with the +Y direction being the upper side and the -Y direction being the lower side. The Z direction is a direction orthogonal to the X and Y directions, and represents the front and back direction of the machine tool system 10, with the +Z direction being the front side when the machine tool system 10 is viewed from the front, and the -Z direction being the rear side.

[0025] <First embodiment>

[0026] The first embodiment will be described with reference to the accompanying drawings. Figures 1 to 3 The configuration and functions of the machine tool system 10 according to this embodiment will be described. Figure 1 This is a front view showing an example of the machine tool system 10 according to the first embodiment. Figure 2 yes Figure 1 A right side view of machine tool system 10 is shown. Figure 3 1 is a perspective view of an example of a machine tool 20 constituting the machine tool system 10. Figure 3 The description of the tool 226 described later is omitted.

[0027] like Figure 1 and Figure 2 As shown, the machine tool system 10 includes a machine tool 20, a loader (transporting device) 30, a workpiece supply unit 40, a workpiece discharge unit 50, a connecting plate (plate material) 60, and a control device 70. The machine tool system 10 is installed on the floor (loading surface) FS of a building such as a factory. The machine tool system 10 uses the control device 70 to control the machine tool 20 and the loader 30, and uses the machine tool 20 to process the workpiece W transported by the loader 30. In this embodiment, the workpiece W is cylindrical, but the shape of the workpiece W is arbitrary, for example, it can also be a disc-shaped workpiece. In addition, the workpiece W can also be a long rod.

[0028] like Figure 1 and Figure 2 As shown in FIG. 2 , the machine tool 20 includes a first processing device 21, a second processing device 22, and a turning device 23. The machine tool 20 processes a workpiece W transported by a loader 30. Figure 1 and Figure 3 As shown, the first processing device 21 includes a bed 210 and a processing unit 220. The first processing device 21 performs a first processing on the workpiece W using the processing unit 220, for example.

[0029] The base 210 includes a main body 212 and a plurality of leveling screws (supporting portions) 214. The main body 212 is, for example, a rectangular parallelepiped and is supported by the plurality of leveling screws 214, allowing it to rest on the floor surface FS. The leveling screws 214 are attached near the four corners of the lower surface of the main body 212, each of which contacts the floor surface FS. In other words, the base 210 rests on the floor surface FS.

[0030] In addition, the base 210 is equipped with a processing unit 220 on its upper surface side. The processing unit 220 has a main spindle 222, a turret 224 and a plurality of tools 226. The main spindle 222 is supported in a manner that can rotate around an axis parallel to the Z direction (front-back direction) and rotates by a rotation drive unit not shown in the figure. In addition, the main spindle 222 has a chuck mechanism not shown in the figure at the top end on the +Z side that can hold the workpiece W. The chuck mechanism has a plurality of gripping claws that can hold the end of the workpiece W. The main spindle 222 rotates the workpiece W held by the chuck mechanism around an axis parallel to the Z direction. The turret 224 is arranged on the -X side relative to the main spindle 222. The turret 224 is supported in a manner that can rotate around an axis parallel to the Z direction and rotates by a rotation drive unit not shown in the figure. A plurality of tool holding portions for holding tools 226 are provided on the outer peripheral surface of the turret 224. The plurality of tools 226 are, for example, cutting tools, end mills, etc., and are detachably mounted on the tool holding portion of the turret tool post 224. The plurality of tools 226 may be of the same type or different types.

[0031] The first machining device 21 rotates the turret tool post 224 to select a tool 226 to be used from a plurality of tools 226. While the workpiece W is being rotated about its axis along with the spindle 222, the turret tool post 224 is moved in the X direction (and the Z direction), thereby machining the workpiece W using the tool 226. In this case, the movement of the turret tool post 224 in the X direction is controlled by the control device 70. Furthermore, the movement position of the turret tool post 224 in the X direction (left-right direction) determines the depth of penetration into the workpiece W.

[0032] like Figure 1 and Figure 3 As shown, the second processing device 22 is arranged on the +X direction side relative to the first processing device 21 and has the same components as the first processing device 21. The second processing device 22 performs a second processing on the workpiece W that has been processed for the first time by the first processing device 21. The second processing device 22 is different from the first processing device 21 in that the spindle 222 and the turret tool post 224 are arranged oppositely in the X direction. In addition, the first processing device 21 and the second processing device 22 each have a base 210, but this is not limited to this form. For example, a single base 210 can be used to constitute the first processing device 21 and the second processing device 22. In addition, there are cases where the processing of the workpiece W by the second processing device 22 is different from the processing of the workpiece W by the first processing device 21. Therefore, the tool 226 used in the processing section 220 of the second processing device 22 can also be different from the tool 226 used in the processing section 220 of the first processing device 21.

[0033] like Figure 1 and Figure 2As shown, the turning device 23 is arranged on the +Y side (above) relative to the first processing device 21 and the second processing device 22. The turning device 23 is supported on the base 210 by, for example, a frame (not shown). The turning device 23 turns the workpiece W, which has been first processed by the first processing device 21, relative to the Z direction before transporting it to the second processing device 22.

[0034] like Figure 1 and Figure 2 As shown, the turning device 23 includes chucks 231 and 232 and a turning unit 234. The chucks 231 and 232 are arranged in an aligned manner along the X-direction. Each chuck 231 and 232 has a gripping claw (not shown) capable of gripping a workpiece W. The chuck 232 is mounted on the turning unit 234. The turning unit 234 moves the chuck 232 so that it faces the chuck 231. After the turning device 23 grips one end of the workpiece W using the chuck 231, the turning unit 234 moves the chuck 232 so that the chuck 232 grips the opposite end of the workpiece W. After the chuck 231 releases its grip on the workpiece W, the turning unit 234 returns the chuck 232 to its original position, thereby flipping the workpiece W in the Z-direction. The operation of the turning device 23 is controlled by the control device 70. The structure of the turning device 23 is arbitrary. Furthermore, if flipping the workpiece W is not necessary, the machine tool 20 may not include the turning device 23.

[0035] In addition, in the present embodiment, the structure having the first processing device 21 and the second processing device 22 is listed as the machine tool 20 for description, but the invention is not limited to this structure. For example, it may be a machine tool that only has one of the first processing device 21 and the second processing device 22. In addition, the machine tool 20 may also have other processing devices on the basis of the first processing device 21 and the second processing device 22. In addition, in the present embodiment, the form in which the tool 226 is installed on the turret tool post 224 is listed as an example for description, but the invention is not limited to this form. For example, the tool 226 may also be in the form of a comb-tooth-shaped tool rest that replaces the turret tool post 224. Even in this case, the comb-tooth-shaped tool rest determines the cutting depth of the tool 226 into the workpiece W by moving in the X direction (left and right direction).

[0036] The loader 30 has two left and right legs 31 and a beam 32 (see Figure 2 ), X guide 33, X slider 34, Z slider 35, lifting rod 36, loader head 37 and left and right second legs 131 (refer to Figure 2The loader 30 is a portal loader or a gantry loader. The loader 30 transports the workpiece W between the workpiece supply unit 40, the first processing device 21, the second processing device 22, and the workpiece discharge unit 50. For example, the loader 30 transports the workpiece W from the workpiece supply unit 40 and supplies it to the first processing device 21, transports the workpiece W processed in the first processing device 21 to the turning device 23, supplies the workpiece W turned in the turning device 23 from the turning device 23 to the second processing device 22, and transports the workpiece W processed in the second processing device 22 from the second processing device 22 to the workpiece discharge unit 50.

[0037] The left and right legs 31 are arranged on the +Z side (front side) of the machine tool 20, on either side of the machine tool 20. These legs 31 are arranged separately from the base 210 of the machine tool 20. Each leg 31 has a leg body 31A and a leveling screw 31B. The leveling screw 31B is attached to the lower end of the leg body 31A and contacts the ground surface FS. Furthermore, the left and right second legs 131 are arranged on the -Z side (rear side) of the machine tool 20, on either side of the machine tool 20. The two second legs 131 are each arranged on the rear side (-Z side) of the legs 31. These second legs 131 are arranged separately from the base 210 of the machine tool 20. Each second leg 131 has a leg body 131A and a leveling screw 131B. The leveling screw 131B is attached to the lower end of the leg body 131A and contacts the ground surface FS. That is, in this embodiment, both the two legs 31 and the two second legs 131 are in contact with the ground surface FS.

[0038] Figure 4 It is a perspective view of the lower right portion of the machine tool system 10 . Figure 5 2 is a top view showing an example of the arrangement of the base 210, the leg 31 and the connecting plate 60. Figure 4 and Figure 5 As shown in FIG. 2 , the leg portion 31 is disposed near the leveling screw 214 of the base 210. In addition, a gap D is formed between the leg portion 31 and the base 210 in the X direction (left-right direction). Figure 4 and Figure 5 , the +X side portion of the machine tool system 10 is shown, but the -X side portion is also similarly positioned. The leg 31 is positioned near the leveling screw 214 of the base 210, creating a gap D between the leg 31 and the base 210 in the X direction (left-right direction). Furthermore, the two second legs 131 are positioned to separate from the base 210 in the -Z direction behind each leg 31 (in the -Z direction).

[0039] like Figure 2 As shown, the beam 32 is provided along the Z direction, connecting the upper portion of the leg 31 with the upper portion of the second leg 131 to improve the rigidity of the loader 30. Figure 1 、 Figure 2 As shown in the figures, the X guide 33 extends in the X direction and is fixed to the upper ends of the left and right legs 31 (leg bodies 31A). The X slider 34 moves in the X direction (left-right direction) along the X guide 33 by a drive unit (not shown). The Z slider 35 moves in the Z direction (front-back direction) along a Z guide (not shown) provided on the X slider 34 by a drive unit (not shown). The lift rod 36 moves up and down in the Y direction (up and down direction) along a lift guide (not shown) provided on the Z slider 35 by a drive unit (not shown). The loader head 37 is provided at the lower end of the lift rod 36. The loader head 37 is equipped with a chuck mechanism (gripping claws) (not shown) and can grip the end of the workpiece W. Furthermore, the loader head 37 can switch the gripped workpiece W between facing downward (-Y direction) and facing sideways (-Z direction) using, for example, a rotary joint.

[0040] The workpiece supply unit 40 is located on the −X side relative to the machine tool 20 . The workpiece supply unit 40 places one or more workpieces W before being processed by the machine tool 20 . The workpiece discharge unit 50 is located on the +X side relative to the machine tool 20 . The workpiece discharge unit 50 places one or more workpieces W after being processed by the machine tool 20 .

[0041] like Figure 1 and Figure 2 As shown, the connecting plate 60 connects the lower portion of the leg 31 to the base 210. Separately, the connecting plate 60 connects the lower portion of the second leg 131 to the base 210. In other words, the leg 31 and the second leg 131 are connected to the base 210 via a single connecting plate 60. In the machine tool system 10 of this embodiment, two connecting plates 60 are used. One connecting plate 60 is used on the -X side of the first processing device 21 to connect the leg 31 and the second leg 131 to the base 210 of the first processing device 21. The other connecting plate 60 is used on the +X side of the base 210 of the second processing device 22 to connect the leg 31 and the second leg 131 to the base 210 of the second processing device 22. The two connecting plates 60 are identical or substantially identical, but may have different shapes.

[0042] like Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, the connecting plate 60 is arranged upright with the plate surface 62A along the Z direction (front-back direction). That is, the connecting plate 60 is arranged so that the plate surface 62A perpendicular to the plate thickness direction (left-right direction, X direction) includes the Y direction (up-down direction) and the Z direction (front-back direction). Figure 2 and Figure 4As shown, the connecting plate 60 has a shape that is symmetrical when viewed from the X direction, and has a main body 62 and two protrusions 64. The main body 62 is rectangular when viewed from the plate thickness direction. The protrusions 64 are provided to increase the connection strength with the leg 31 and the second leg 131. The two protrusions 64 are triangular when viewed from the plate thickness direction. The two protrusions 64 protrude upward from the upper end surface of the main body 62 at both end sides in the longitudinal direction (front-back direction, Z direction) of the main body 62 so that the inclined surfaces face each other, and are respectively provided to deviate from the two ends in the longitudinal direction of the main body 62 toward the central side. The plate thickness and the dimensions in the up-down direction of the connecting plate 60 can be set arbitrarily.

[0043] like Figure 4 and Figure 5 As shown, the connecting plate 60 is connected to the side of the base 210 via multiple screws 66 arranged in the Z and Y directions, forming a connecting portion 66A. Furthermore, the connecting plate 60 is connected to the leg body 31A of the leg 31 via screws (not shown), forming a connecting portion 66B. Furthermore, the connecting plate 60 is connected to the leg body 131A of the second leg 131 via screws (not shown), forming a connecting portion 166B. Connecting portion 66A is offset from the center of the length of the body 62 toward the +Z side. That is, in the Z direction (front-back direction), the distance between connecting portion 66A and connecting portion 66B is shorter than the distance between connecting portion 66A and connecting portion 166B. As a result, the support rigidity of the leg 31 in the X direction (left-right direction) and the Y direction (up-down direction) is higher than the support rigidity of the second leg 131 in the X and Y directions. The leg 31 has an X guide 33 at the upper end, so the load of the loader 30 is mostly applied to the leg 31 and is prone to vibration. As described above, the support rigidity of the leg 31 is high, so the loader 30 can operate stably. Figure 4 As shown, the two protrusions 64 are respectively disposed between the leg 31 and the second leg 131 .

[0044] The connecting plate 60 is, for example, a metal plate that can be elastically deformed in a direction perpendicular to the plate surface 62A (plate thickness direction). In addition, as mentioned above, the connecting plate 60 is arranged upright with the plate surface 62A along the Z direction (front-back direction). Therefore, the rigidity of the connecting plate 60 in the Y direction (up and down direction) and the Z direction (front-back direction) is higher than the rigidity in the X direction (left and right direction). That is, the connecting plate 60 has a rigidity that allows deflection (elastic deformation) in the X direction (left and right direction) and can withstand the load of the loader 30 in the Y direction (up and down direction). As a result, the connecting plate 60 withstands the load of the loader 30 and deflects when the leg 31 vibrates (sways) in the X direction, thereby suppressing the vibration in the X direction from being transmitted to the base 210.

[0045] The control device 70 controls the components of the machine tool 20 and the loader 30. The control of the operations of the components by the control device 70 will be described later.

[0046] Next, refer to Figures 6 to 9 The machining operation of the workpiece W performed by the machine tool system 10 according to the present embodiment will be described. Figures 6 to 9 The figures are used to explain the machining operation of the workpiece W by the machine tool system 10 according to the present embodiment, and are front views of the machine tool system 10 from the start of machining to the end of machining. The numbers in these figures are assigned in chronological order of the machining operation.

[0047] If the operator inputs the processing conditions of the workpiece W on the operation panel (interface) not shown, the control device 70 controls the machine tool system 10 according to the input information. Figure 6 As shown, at the start of processing, the loader head 37 of the loader 30 descends from above the workpiece supply unit 40, and lifts the workpiece W after gripping it (see FIG. Figure 6 ). As the loader head 37 is raised and lowered, the leg 31 and the second leg 131 vibrate in the vertical direction (Y direction). Then, after the loader head 37 is raised, the X slide 34 moves in the +X direction along the X guide 33 and stops above the main shaft 222 of the first processing device 21 (see Figure 7 ). As the X slider 34 moves and stops, the leg 31 and the second leg 131 vibrate in the left-right direction (X direction). Then, as the lifting rod 36 descends, the loader head 37 descends to a position opposite to the spindle 222 (a position overlapping in the Z direction), and after changing the workpiece W from facing downward to facing the -Z direction, the Z slider 35 moves in the -Z direction, thereby delivering the workpiece W to the spindle 222 (see Figure 8 ).

[0048] The first machining device 21 rotates the workpiece W held by the spindle 222 about its axis, moving the tool 226 mounted on the turret tool post 224 in the +X direction while machining the workpiece W. When machining is complete, the workpiece W held by the spindle 222 is transferred to the loader head 37. By moving the X-slide 34, Z-slide 35, and lift rod 36, the workpiece W from the loader head 37 is transferred to the chuck 231 (not shown) of the reversing device 23. The reversing device 23 transfers the workpiece W from the chuck 231 to the chuck 232, thereby reversing the workpiece W. After receiving the reversed workpiece W, the loader head 37 moves the X-slide 34, Z-slide 35, and lift rod 36 to transfer the workpiece W to the spindle 222 (not shown).

[0049] The second machining device 22 rotates the workpiece W held by the spindle 222 about its axis, while moving the tool 226 mounted on the turret tool post 224 in the -X direction, machining the workpiece W. When machining is completed, the workpiece W held by the spindle 222 is transferred to the loader head 37. During this transfer of the workpiece W between the spindle 222 and the reversing device 23, the legs 31 and second legs 131 vibrate in the left-right direction (X direction) due to the movement of the X slider 34, in the vertical direction (Y direction) due to the raising and lowering of the lift rod 36, and in the front-back direction (Z direction) due to the movement of the Z slider 35.

[0050] Next, the X slider 34 moves in the +X direction along the X guide 33 and stops above the workpiece discharge section 50. Due to the movement of the X slider 34, the leg 31 and the second leg 131 vibrate in the left-right direction (X direction). Next, the loader head 37 holding the processed workpiece W is lowered as the lifting rod 36 is lowered, and the workpiece W is placed on the workpiece discharge section 50 (see Figure 9 ). Due to the lifting and lowering of the lifting rod 36, the leg 31 and the second leg 131 vibrate in the vertical direction (Y direction). Through the above example of the operation, the processing of the workpiece W in this embodiment is completed. By repeating the above operation, multiple workpieces W are processed. As the workpieces W are processed, the leg 31 and the second leg 131 vibrate in the left-right direction (X direction), the vertical direction (Y direction), and the front-back direction (Z direction). In addition, while the first processing device 21 and the second processing device 22 are processing the workpiece W, the operation of the loader 30 is also continuously performed.

[0051] Next, the operation of the first embodiment will be described with reference to the accompanying drawings. As described above, the base 210 of the machine tool 20 and the leg 31 and second leg 131 of the loader 30 are connected to each other via the connecting plate 60. The connecting plate 60 is an elastically deformable plate, and the connection portion 66A with the base 210 and the connection portion 66B with the leg 31 are offset in the Z direction (front-back direction). Furthermore, the connection portion 66A with the base 210 and the connection portion 166B with the second leg 131 are offset in the Z direction (front-back direction).

[0052] Figure 10 This is a schematic diagram showing the path of the vibration generated by the loader 30 to the ground surface FS in the machine tool system 10 of this embodiment. The black arrows indicate the propagation direction of the vibration of the leg 31 generated by the loader 30, and the white arrows indicate the propagation direction of the vibration generated by the spindle 222 of the first processing device 21 and the second processing device 22. Figure 10As shown, the machine tool system 10 of this embodiment connects the leg 31 to the base 210 via a connecting plate 60. Therefore, the relative positions of the machine tool 20 and the loader 30 are less likely to deviate, and the workpiece W can be smoothly transferred between the machine tool 20 and the loader 30. In addition, a portion of the vibration generated by the operation of the loader 30 is transmitted to the base 210 of the machine tool 20 and is transmitted to the ground FS via the leveling screws 214 of the base 210. The connecting plate 60 has high rigidity in the vertical direction and the front-back direction, so the vibration of the leg 31 in the vertical direction and the front-back direction is transmitted from the connecting plate 60 to the ground FS via the leveling screws 214 of the base 210. In addition, the vibration generated in the spindle 222 and the tool 226 (turret tool post 224) of the machine tool 20 is transmitted to the ground FS via the leveling screws 214 of the base 210.

[0053] In addition, the connecting plate 60 can be elastically deformed in the X direction, and the connection portion 66A with the base 210 and the connection portion 66B with the leg 31 are offset in the Z direction (front-back direction). Therefore, even if the leg 31 vibrates in the X direction, part of the vibration is absorbed by its elastic deformation, thereby reducing the transmission of the vibration in the X direction to the base 210. The X direction (left-right direction) is the direction that specifies the cutting depth of the tool 226 into the workpiece W in the first processing device 21 and the second processing device 22. Therefore, since the vibration of the loader 30 (leg 31) in the X direction is difficult to be transmitted to the base 210, the variation of the cutting depth of the workpiece W is reduced, and the reduction in the processing accuracy of the workpiece W can be suppressed. In addition, Figure 10 Although not shown, the second leg portion 131 also vibrates in the X direction. The elastic deformation of the connecting plate 60 absorbs a portion of the vibration, thereby reducing the transmission of the vibration in the X direction to the base 210. In other words, in this embodiment, it is possible to suppress the relative positional deviation between the machine tool 20 and the loader 30, and to prevent a decrease in the machining accuracy of the workpiece W.

[0054] In addition, if Figure 1 and Figure 2 As shown, in the machine tool system 10 of this embodiment, the two legs 31 are in contact with the ground surface FS via leveling screws 31B. Furthermore, the two second legs 131 are in contact with the ground surface FS via leveling screws 131B. Therefore, a portion of the vibration generated by the loader 30 can be directly transmitted to the ground surface FS. This reduces the vibration absorbed by the connecting plate 60. In other words, by allowing some of the vibration generated by the loader 30 to escape from the legs 31, the magnitude of the vibration transmitted to the base 210 can be adjusted.

[0055] In addition, the connecting plate 60 has a rigidity that can withstand the load of the loader 30 in the Y direction (up and down direction) and the Z direction (front and back direction) more than in the X direction (left and right direction). Therefore, when the connecting plate 60 receives the vibration of the loader 30, even if it elastically deforms in the X direction, it is difficult to deform or will not deform in the Y direction and the Z direction. Therefore, the machine tool system 10 of this embodiment suppresses the vibration of the leg 31 (second leg 131) in the X direction from being transmitted to the base 210, and the vibration of the leg 31 in the Y direction and the Z direction is transmitted to the base 210, so that the base 210 suppresses the vibration together. In most cases, the Y direction and the Z direction have little effect on the processing accuracy of the workpiece W. Therefore, by suppressing the vibration in the X direction, the reduction in the processing accuracy of the workpiece W can be suppressed.

[0056] Furthermore, in this embodiment, the legs 31 and second legs 131 are in contact with the ground surface FS via leveling screws 31B and 131B. This allows the majority of the load on the loader 30 to be released from the legs 31 and second legs 131 to the ground surface FS via the leveling screws 31B and 131B. As a result, the vertical load (Y-direction) on the connecting plate 60 is reduced, allowing the vertical rigidity of the connecting plate 60 to be lowered, thereby reducing the supply cost of the connecting plate 60 and preventing degradation of the connecting plate 60.

[0057] In addition, in this embodiment, Figure 2 、 Figure 4 and Figure 5 As shown, a single connecting plate 60 is connected to the leg 31 and the second leg 131. That is, a single connecting plate 60 serves both as a connection to the leg 31 and the second leg 131. Therefore, compared to a case where the leg 31 and the second leg 131 are each connected by a separate connecting plate 60, the number of connecting plates 60 used can be reduced, thereby reducing the manufacturing cost of the machine tool system 10. Furthermore, in this embodiment, the connection of the leg 31 and the second leg 131 to the base 210 is not limited to a single connecting plate 60. For example, the leg 31 and the second leg 131 may each be connected to the base 210 using a separate connecting plate 60.

[0058] <Second embodiment>

[0059] Next, refer to Figure 11 and Figure 12 A machine tool system 10A according to a second embodiment will be described. Figure 11 : is a perspective view of the lower right side portion of the machine tool system 10A of the second embodiment. In the following description, the same reference numerals are given to the same structures as those of the machine tool system 10 of the first embodiment, and their descriptions are omitted or simplified. In the following description, the parts that are different from the machine tool system 10 of the first embodiment are described. Figure 11As shown, the machine tool system 10A is different from the machine tool system 10 of the first embodiment (see Figure 1 Unlike the two legs 31 and the two second legs 131, which are spaced apart in the Y direction (vertical direction) relative to the floor FS, in the machine tool system 10A, the legs 31 are composed solely of the leg body 31A, and the second legs 131 are composed solely of the leg body 131A. The legs 31 and the second legs 131 do not have the leveling screws 31B and 131B, respectively.

[0060] The leg 31 (leg body 31A) is arranged near the top of the leveling screw 214 of the base 210 and is separated from the base 210. Here, "near" refers to a position offset from the top of the leveling screw 214, such as Figure 5 As shown, when viewed from the Y direction, the leg body 31A and the leveling screw 214 of the base 210 are adjacent in the X direction with a gap D therebetween. Furthermore, in this embodiment, the leg body 31A is positioned directly above the leveling screw 214, but this is not limiting. For example, the leg 31 (leg body 31A) may also be positioned directly above the leveling screw 214.

[0061] The connecting plate 60 has sufficient rigidity to withstand the load of the loader 30 in the vertical direction. In this embodiment, the load of the loader 30 is borne by the base 210 via the connecting plate 60. Furthermore, since the legs 31 are positioned near and directly above the leveling screws 214, the bending moment relative to the base 210 can be reduced compared to a case where the legs 31 are positioned further away from the leveling screws 214. Furthermore, vibrations transmitted from the legs 31 to the base 210 via the connecting plate 60 can be dissipated more quickly to the ground surface FS. In other words, the effects of the load or vibrations of the loader 30 on the base 210 can be reduced. This also applies to cases where the legs 31 are positioned directly above the leveling screws 214.

[0062] Next, refer to Figure 12 The function of this embodiment will be described. Figure 12 This is a schematic diagram showing the path of the vibration generated by the loader 30 to the ground surface FS in the machine tool system 10A of this embodiment. The black arrows indicate the propagation direction of the vibration generated by the loader 30, and the white arrows indicate the propagation direction of the vibration generated by the spindles 222 of the first processing device 21 and the second processing device 22. Figure 12As shown, the machine tool system 10A of this embodiment minimizes deviation in the relative position of the machine tool 20 and loader 30. The coupling plate 60 reduces the transmission of X-direction vibrations of the loader 30 (legs 31) to the base 210, thereby suppressing degradation in the machining accuracy of the workpiece W. Furthermore, the load of the loader 30 and the vertical and longitudinal vibrations of the legs 31 are transmitted from the coupling plate 60 to the floor surface FS via the leveling screws 214 of the base 210. In other words, similar to the first embodiment described above, this embodiment suppresses deviation in the relative position of the machine tool 20 and loader 30, thereby suppressing degradation in the machining accuracy of the workpiece W.

[0063] As described above, the present invention has been described using the aforementioned embodiment as an example, but the technical scope of the present invention is not limited to the forms described in the aforementioned embodiment. For example, in the present invention, there is also a situation where a part of the constituent elements described in the aforementioned embodiment is omitted. In addition, the multiple constituent elements described in the aforementioned embodiment can also be appropriately combined. In addition, as long as the law permits, the disclosure of all documents cited in the aforementioned embodiment will be cited as part of the description herein.

[0064] Furthermore, in the above-described embodiment, the distance between the connection portion 66A with the base 210 and the connection portion 66B with the leg 31 is shorter than the distance between the connection portion 66A and the connection portion 166B with the second leg 131. However, the present invention is not limited to this configuration. For example, the distance between the connection portion 66A and the connection portion 66B may be the same as the distance between the connection portion 66A and the connection portion 166B. For example, the distance between the connection portion 66A and the connection portion 66B may be longer than the distance between the connection portion 66A and the connection portion 166B.

[0065] In addition, one or more of the elements described in the above embodiments, etc. may be omitted. In addition, the elements described in the above embodiments, etc. may be appropriately combined. In addition, as long as the law permits, the disclosures of Japanese Patent Application No. 2020-086628 and all the documents cited in the above embodiments, etc. are incorporated herein by reference as part of the description.

[0066] Description of Reference Numerals

[0067] 10: Machine tool system

[0068] 10A: Machine tool system

[0069] 20: Machine tools

[0070] 21: First processing device

[0071] 22: Second processing device

[0072] 30: Loader (transportation device)

[0073] 31: Legs

[0074] 131: Second Leg

[0075] 60: Connecting plate (plate)

[0076] 62: Board

[0077] 66A: Connecting part

[0078] 66B: Connecting part

[0079] 210: Base

[0080] 214: Leveling screw (support part)

[0081] 220: Processing Department

[0082] 222: Spindle

[0083] 226: Tools

[0084] FS: Ground (loading surface)

[0085] W: workpiece

Claims

1. A machine tool system comprising: A machine tool having a processing portion for processing a workpiece using a tool and a base for mounting the processing portion; a conveying device having two left and right legs disposed separately from the base, for conveying the workpiece and supplying the workpiece to the processing section or discharging the workpiece from the processing section; and A plate capable of elastic deformation in the left-right direction, connecting the base and the legs, The plate is arranged upright with the plate surface along the front-back direction. The connection portion of the plate with the base and the connection portion of the plate with the legs are staggered in the front-to-back direction.

2. The machine tool system according to claim 1, wherein: The processing unit has a main shaft that holds a workpiece and rotates. The tool moves in the left-right direction to define a cutting depth into the rotating workpiece.

3. The machine tool system according to claim 1, wherein: The legs are arranged in contact with a placement surface on which the base is placed.

4. The machine tool system according to claim 2, wherein: The legs are arranged in contact with a placement surface on which the base is placed.

5. The machine tool system according to claim 1, wherein: The legs are disposed vertically apart from a placement surface on which the base is placed.

6. The machine tool system according to claim 2, wherein: The legs are disposed vertically apart from a placement surface on which the base is placed.

7. The machine tool system according to claim 5, wherein: The plate has rigidity capable of supporting a load of the conveying device in the vertical direction.

8. The machine tool system according to claim 6, wherein: The plate has rigidity capable of supporting a load of the conveying device in the vertical direction.

9. The machine tool system according to claim 5, wherein: The base has a supporting portion in contact with the mounting surface. The leg portion is disposed immediately above or in the vicinity of immediately above the support portion and is separated from the base.

10. The machine tool system according to claim 6, wherein: The base has a supporting portion in contact with the mounting surface. The leg portion is disposed immediately above or in the vicinity of immediately above the support portion and is separated from the base.

11. The machine tool system according to claim 7, wherein: The base has a supporting portion in contact with the mounting surface. The leg portion is disposed immediately above or in the vicinity of immediately above the support portion and is separated from the base.

12. The machine tool system according to claim 8, wherein: The base has a supporting portion in contact with the mounting surface. The leg portion is disposed immediately above or in the vicinity of immediately above the support portion and is separated from the base.

13. The machine tool system according to any one of claims 1 to 12, wherein: A second leg is disposed behind the left and right legs respectively. One of the plates connects the leg portion and the second leg portion arranged in the front-rear direction to the base.

14. The machine tool system according to claim 13, wherein: The connection portion of the plate to the base is set between the connection portion to the leg and the connection portion to the second leg.

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