Working machinery

Abstract

Provided is a machine tool capable of executing control with respect to a motor of a drive source, the control being in accordance with the connected state of a bed and the separated state of a bed.　This machine tool includes: a first machining device and a second machining device that execute machining of a workpiece; a first bed on which the first machining device is placed; and a second bed on which the second machining device is placed. The machine tool comprises: a bed changeable between a connected state in which the first bed and the second bed are connected to each other by a connection member, and a separated state in which the connection member is removed and the first bed and the second bed are separated; a motor that functions as a drive source of the first machining device; a receiving device that receives a selection of the connected state or the separated state; and a control device that sets a parameter corresponding to the state selected by the receiving device from between the connected state and the separated state, drives the motor in accordance with the set parameter at a time of machining of the second machining device, and controls the first machining device.

Description

[Technical Field]

[0001] The present disclosure relates to a machine tool in which a plurality of processing devices are mounted on a bed. [Background technology]

[0002] Various machine tools have been proposed in the past in which multiple processing devices are mounted on a bed. For example, the machine tool disclosed in Patent Document 1 below is a so-called parallel twin-axis lathe, in which two independent beds are arranged side by side in the left-right direction, and a processing device is mounted on each of the two beds. Each of the two processing devices has a spindle for holding a workpiece and a tool rest for holding a tool. The two beds are connected to each other by a vibration suppression device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2010 / 110030 Summary of the Invention [Problem to be solved by the invention]

[0004] In a machine tool like the one described above, in which processing devices are mounted on two beds, the operations of the two processing devices may affect each other. For example, vibrations generated by driving a slide device or the like of one processing device may propagate through the bed to the other processing device, potentially affecting the processing accuracy of the other processing device. In the machine tool described in Patent Document 1, the propagation of vibrations is suppressed by a vibration suppression device.

[0005] Incidentally, if the two beds described above are installed in a separate state without being connected by a connecting member such as a vibration suppression device, the propagation of vibrations caused by the drive described above can be reduced. However, if the two beds are separated, the bed installation work, such as adjusting the positions of the two beds, may become complicated, or the labor required for relocation of the beds may increase. For this reason, whether the beds are connected or separated is changed depending on the user's requests, etc. Therefore, there is a demand for a machine tool that can optimally control the drive source depending on whether the beds are in a separate state or a connected state.

[0006] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide a machine tool that can execute control of a drive source motor according to the connected and separated states of a bed. [Means for solving the problem]

[0007] In order to solve the above problems, this specification discloses a machine tool having a first processing device and a second processing device that perform processing on a workpiece, a first bed on which the first processing device is placed, and a second bed on which the second processing device is placed, the bed being changeable between a connected state in which the first bed and the second bed are connected to each other by a connecting member and a separated state in which the first bed and the second bed are separated by removing the connecting member, a motor that functions as a drive source for the first processing device, a reception device that receives a selection of the connected state or the separated state, and a control device that sets parameters used to control the motor to the parameters corresponding to the state selected by the reception device from the connected state and the separated state, and drives the motor and controls the first processing device using the parameters that were set when the second processing device is processing. [Effects of the Invention]

[0008] According to the machine tool of the present disclosure, the control device sets parameters used to control the motor of the first processing device to parameters corresponding to the state selected by the reception device. During processing by the second processing device, the control device drives the motor using the set parameters to control the first processing device. This allows the motor, which functions as the drive source for the first processing device, to be controlled using parameters corresponding to a separated state in which the beds are separated or a connected state in which the beds are connected via a connecting member. Therefore, in the connected state, the impact of vibrations generated in response to the drive of the first processing device on processing by the second processing device can be reduced. Furthermore, in the separated state, the impact of vibration propagation is smaller than in the connected state. Therefore, the production efficiency of the first processing device can be improved by, for example, increasing the acceleration of the motor in the separated state compared to the connected state. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a front view of a machine tool according to this embodiment. [Figure 2] Block diagram of a machine tool. [Figure 3] FIG. 2 is a perspective view of a first processing device, a second processing device, and a bed. [Figure 4] FIG. [Figure 5] An enlarged view of the area enclosed by the dashed line in Figure 4. [Figure 6] A rear view of the beds in the connected state and an enlarged view of a portion thereof. [Figure 7] FIG. 2 is a front view of the bed in a separated state and an enlarged view of a portion thereof. [Figure 8] A rear view of the bed in a separated state and an enlarged view of a portion thereof. [Figure 9] FIG. 10 is a diagram showing a screen for accepting selection of a connected state or a separated state in another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] An embodiment of a machine tool according to the present disclosure will be described below with reference to the drawings. FIG. 1 shows a front view of a machine tool 10 according to this embodiment. FIG. 2 shows a block diagram of the machine tool 10. FIG. 3 shows a perspective view of a first processing device 11, a second processing device 12, and a bed 18 provided on the machine tool 10. FIG. 3 also shows a schematic illustration of the bed 18. The detailed configuration of the bed 18 will be described with reference to FIGS. 4 to 8. In the following description, the direction of the machine tool 10 as viewed from the front, as shown in FIG. 1, will be used as a reference, and the machine width direction of the machine tool 10 will be referred to as the left-right direction, a direction parallel to an installation surface 71 of the machine tool 10 and perpendicular to the left-right direction will be referred to as the front-rear direction, and a direction perpendicular to the left-right direction and the front-rear direction will be referred to as the up-down direction.

[0011] As shown in Figures 1 to 3, machine tool 10 is equipped with first processing device 11, second processing device 12, loader 13, operation panel 15, control device 17, bed 18, etc. The first and second processing devices 11, 12 are devices that perform processing on a workpiece (not shown). A user can access the processing spaces of the first and second processing devices 11, 12 by opening a front door 19A provided in front of an equipment cover 19 of machine tool 10, and can check the processing status of the workpiece, change tools, etc. The first and second processing devices 11, 12 will be described in detail later.

[0012] The loader 13 is, for example, a gantry-type workpiece transport device, and is provided on the top of the machine tool 10. The loader 13 has a rail base 13A fixed to the top of a frame member (not shown) provided inside the device cover 19, an elevator device 13B attached to the rail base 13A, and a head (not shown) that grips the workpiece. The loader 13 slides the head in the left-right, up-down, and front-back directions using the rail base 13A and the elevator device 13B. The loader 13 changes the position of the head in the left-right direction, etc., and transfers the workpiece between the first and second processing devices 11, 12, etc.

[0013] The operation panel 15 is a user interface and includes a touch panel 15A, operation switches 15B, etc. The operation panel 15 receives operation input from the user via the touch panel 15A and operation switches 15B, and outputs a signal corresponding to the received operation input to the control device 17. The operation panel 15 also changes the display content of the touch panel 15A, etc., based on the control of the control device 17. The operation panel 15 is an example of a reception device of the present disclosure. Note that the reception device of the present disclosure is not limited to the configuration described above. For example, the reception device may include a liquid crystal panel and operation switches, and may be configured to select a connection state, etc., described below, from items displayed on the liquid crystal panel.

[0014] (Regarding the first and second processing devices 11 and 12) As shown in FIGS. 2 and 3 , the first and second machining devices 11, 12 are placed on a bed 18 and arranged side by side in the left-right direction. The bed 18 is, for example, a cast iron structure and includes a first bed 41 and a second bed 43. The first machining device 11 is placed on the first bed 41. The second machining device 12 is placed on the second bed 43. When the bed 18 is viewed from the front, for example, the first machining device 11 and the first bed 41 are structured symmetrically with the second machining device 12 and the second bed 43 with respect to a line passing through the center of the bed 18 in the left-right direction and extending in the up-down direction. That is, the machine tool 10 includes a pair of first and second machining devices 11, 12 symmetrically arranged side by side in the left-right direction, and a pair of first and second beds 41, 43 symmetrically arranged side by side in the left-right direction. Therefore, in the following description, the first bed 41 and the first processing device 11 will be mainly described, and the description of the second bed 43 and the second processing device 12 will be omitted as appropriate.

[0015] The first and second machining devices 11 and 12 are so-called parallel two-axis lathes with the front-to-rear direction as the main axis direction (Z-axis direction). The first machining device 11 includes a first main spindle device 21, a first turret device 22, a first X-axis slide device 24, and a first Z-axis slide device 25. Similarly, the second machining device 12 includes a second main spindle device 31, a second turret device 32, a second X-axis slide device 34, and a second Z-axis slide device 35. The first bed 41 includes a first base 51, a first turret mounting portion 52, and a first main spindle mounting portion 53. Similarly, the second bed 43 includes a second base 61, a second turret mounting portion 62, and a second main spindle mounting portion 63.

[0016] Here, the bed 18 of this embodiment can be changed between a connected state in which the first bed 41 and the second bed 43 are connected, and a separated state in which the first bed 41 and the second bed 43 are separated. Figures 4 to 6 show the bed 18 in which the connecting member 80 is attached to connect the first and second beds 41, 43. Figures 7 and 8 show the bed 18 in which the connecting member 80 is removed to separate the first and second beds 41, 43. First, the first and second processing devices 11, 12 and the bed 18 will be described using Figures 2 to 6. The connected state and separated state will be described in detail later.

[0017] (First and second turret devices 22, 32) As shown in FIGS. 2 to 6 , the first base 51 of the first bed 41 has, for example, a substantially rectangular parallelepiped shape that is long in the front-rear direction and has a predetermined thickness in the up-down direction. Legs 45 are attached to the underside of the first base 51 at each corner in the front-rear and left-right directions. The first base 51 is placed via the legs 45 on an installation surface 71 on which the machine tool 10 is installed. The first base 51 is capable of adjusting the level of the first processing device 11 by adjusting the height of the four legs 45. The first turret placement unit 52 is placed on the first base 51 and fixed to the first base 51. The first turret placement unit 52 has a substantially rectangular parallelepiped shape that is long in the front-rear direction, has approximately the same thickness as the first base 51 in the up-down direction, and is shorter in the left-right direction than the first base 51. The length of the first turret placement unit 52 in the front-rear direction is approximately the same as the length of the first base 51 in the front-rear direction.

[0018] The first turret unit 22, the slide mechanism of the first X-axis slide unit 24, and the slide mechanism of the first Z-axis slide unit 25 are mounted on a first turret mounting portion 52. The first X-axis slide unit 24 is a device that moves the first turret unit 22 in the left-right direction (sometimes referred to as the X-axis direction). The first Z-axis slide unit 25 is a device that moves the first turret unit 22 in the front-rear direction. The first Z-axis slide unit 25 includes, for example, a first Z-axis motor 25A (see FIG. 2), a Z-axis guide rail 25B arranged on the first turret mounting portion 52, and a Z-axis slide 25C that is slidable relative to the Z-axis guide rail 25B. The Z-axis guide rail 25B is disposed in a direction parallel to the front-rear direction (sometimes referred to as the Z-axis direction) and holds the Z-axis slide 25C slidable in the Z-axis direction. The first Z-axis slide device 25 transmits the rotation output of the first Z-axis motor 25A to the Z-axis slide 25C via a transmission mechanism (for example, a ball screw mechanism), and moves the Z-axis slide 25C in the Z-axis direction.

[0019] The control device 17 (see FIG. 2) is connected to the first Z-axis motor 25A via a drive circuit 20. The drive circuit 20 includes, for example, an amplifier circuit that controls the power supplied to each motor, such as the first Z-axis motor 25A. The first Z-axis slide device 25 also includes a Z-axis encoder (not shown) that outputs encoder information, such as the rotational position of the first Z-axis motor 25A. The control device 17 performs feedback control, controlling the rotational speed and other parameters of the first Z-axis motor 25A via the drive circuit 20, based on the encoder information (such as rotational position information) from the Z-axis encoder. The control device 17 controls the first Z-axis motor 25A to move the Z-axis slide 25C to any position in the Z-axis direction.

[0020] The first X-axis slide device 24 also includes, for example, a first X-axis motor 24A (see FIG. 2) and an X-axis guide rail 24B provided on a Z-axis slide 25C. In the following description of the first X-axis slide device 24, the description of components similar to those of the first Z-axis slide device 25 will be omitted as appropriate. The X-axis guide rail 24B is disposed in a direction parallel to the X-axis direction and holds the first turret device 22 so that it can slide in the X-axis direction. The first X-axis slide device 24 moves the first turret device 22 in the X-axis direction in response to the driving of the first X-axis motor 24A. The control device 17 controls the first X-axis motor 24A via the drive circuit 20 based on encoder information from an X-axis encoder (not shown) of the first X-axis slide device 24, thereby moving the first turret device 22 to any position in the X-axis direction. Therefore, the control device 17 can move the first turret device 22 (tool) to any position in the front-rear and left-right directions by controlling the first X-axis slide device 24 and the first Z-axis slide device 25. The second processing device 12, like the first processing device 11, can move the second turret device 32 to any position in the front-rear and left-right directions by controlling the second X-axis motor 34A (see FIG. 2) of the second X-axis slide device 34 and the second Z-axis motor 35A (see FIG. 2) of the second Z-axis slide device 35.

[0021] The first turret unit 22 includes a first turret motor 22A (see FIG. 2) and a first turret 22B to which multiple tools (not shown) can be attached. The first turret 22B rotates about a rotation axis parallel to the front-to-rear direction based on the rotation of the first turret motor 22A. The first turret unit 22 drives the first turret motor 22A under the control of the control device 17 to index an arbitrary tool from among the multiple tools attached to the first turret 22B. The first turret unit 22 performs machining on a workpiece held by the first spindle unit 21 using the indexed tool. The second turret unit 32, like the first turret unit 22, drives a second turret motor 32A (see FIG. 2) to index a tool on the second turret 32B. The second turret unit 32 performs machining on a workpiece held by the second spindle unit 31 using the indexed tool. Furthermore, each of the first and second turret devices 22, 32 may use the first and second turret motors 22A, 32A as a driving source for rotating a rotary tool (such as an end mill) attached to the first and second turrets 22B, 32B.

[0022] (First and second spindle devices 21, 31) The first spindle mounting portion 53 of the bed 18 is attached to the right of the first turret mounting portion 52. The first spindle mounting portion 53 is disposed, for example, at a position rearward of the front position of the first turret mounting portion 52. The first spindle mounting portion 53 is disposed at a position spaced a predetermined distance above the installation surface 71, with the lower end of its left side supported by the first turret mounting portion 52 and the first base 51. Similarly, the second spindle mounting portion 63 of the second bed 43 is attached to the left of the second turret mounting portion 62, and disposed at a position spaced a predetermined distance above the installation surface 71 (at the same height as the first spindle mounting portion 53). The first and second spindle mounting portions 53, 63 are disposed close to each other with a small gap 73 (see FIG. 5) therebetween in the left-right direction.

[0023] The first spindle device 21 is placed above the first spindle mounting portion 53 and is fixed to the first spindle mounting portion 53. The first spindle device 21 is equipped with a first spindle motor 21A (see FIG. 2), and drives the first spindle motor 21A based on the control of the control device 17. The first spindle device 21 grips a workpiece with a chuck mechanism (not shown) provided in front of it and rotates the workpiece around a spindle extending parallel to the front-rear direction based on the driving of the first spindle motor 21A. Similar to the first spindle device 21, the second spindle device 31 rotates the workpiece around a spindle extending parallel to the front-rear direction, i.e., a spindle parallel to and at the same height as the spindle of the first spindle device 21, based on the driving of the second spindle motor 31A (see FIG. 2). Note that the configurations of the first and second machining devices 11, 12 and the bed 18 described above are merely examples. For example, the spindle of the first spindle device 21 and the spindle of the second spindle device 31 may be arranged at different heights.

[0024] (Control device 17) Control device 17 is a processing device equipped with CPU 17A and mainly composed of a computer, which executes numerical control and sequence control to comprehensively control the operation of machine tool 10. Control device 17 is electrically connected to each device of machine tool 10 (first spindle motor 21A, etc.) and is capable of controlling the operation of each device. Control device 17 also includes memory device 17B, which includes, for example, RAM, ROM, flash memory, a hard disk, etc. Various types of control data D1 are stored in memory device 17B.

[0025] The control data D1 includes, for example, programs for controlling the operation of the first and second spindle units 21, 31 and the first and second turret units 22, 32, the type of workpiece to be produced, the type of tool used for the operation, and the position of the tool relative to the workpiece during the operation. The programs referred to here include, for example, a sequence control program (ladder circuit) and an NC program. The control data D1 also includes time constant data D2 for setting the acceleration and deceleration of the first X-axis motor 24A and the first Z-axis motor 25A (described later). The control device 17 executes the program of the control data D1 using the CPU 17A and sets the time constants of the first X-axis motor 24A and the like based on the time constant data D2 in response to an operation input from the operation panel 15. Details of the time constant data D2 will be described later. In the following description, the control of each device by the control device 17 executing the program of the control data D1 may be referred to simply by the device name. For example, "the control device 17 controls the first X-axis motor 24A" means "the control device 17 executes the program of the control data D1 with the CPU 17A and controls the first X-axis motor 24A based on the program."

[0026] (Control of the first and second processing devices 11 and 12) The control device 17 controls each device using the above-described configuration to perform machining on the workpiece. For example, the control device 17 transfers the workpiece received by the loader 13 from the device in the previous process to the first spindle device 21 of the first machining device 11. The first machining device 11 rotates the first spindle motor 21A based on the control of the control device 17 to rotate the gripped workpiece. The control device 17 controls the first turret motor 22A to rotate the first turret 22B and index the tool. The control device 17 controls the first X-axis motor 24A to move the first turret 22B in the left-right direction. The control device 17 also controls the first Z-axis motor 25A to move the first turret 22B in the front-back direction. As a result, the control device 17 can change the left-right and front-back position of the indexed tool and machine the workpiece into a desired shape using the tool.

[0027] As described above, machine tool 10 controls various motors during machining operations, and executes acceleration to increase the rotational speed of the motors and deceleration to decrease the rotational speed. Machine tool 10 includes two machining devices, first and second machining devices 11 and 12, mounted on a single bed 18. Therefore, when bed 18 is coupled, for example, if the first X-axis motor 24A of first machining device 11 is accelerated or decelerated while machining is being performed by the second machining device 12, vibrations generated by the acceleration or deceleration may propagate through bed 18 to the second machining device 12, potentially reducing the machining accuracy of the second machining device 12. For this reason, the acceleration and deceleration of the first X-axis motor 24A and other motors in the coupled state are limited. On the other hand, when bed 18 is separated, vibrations are not propagated or are extremely small, eliminating or mitigating the above-described limitations on acceleration and deceleration. Therefore, the control device 17 receives information indicating whether the bed 18 is in a connected state or a separated state from the operation panel 15, and if the bed 18 is in a separated state based on the received information, increases the acceleration and deceleration compared to the connected state. As a result, in the separated state where the impact of vibration due to acceleration and deceleration is small, the first X-axis slide device 24 and the first Z-axis slide device 25 are controlled at larger acceleration and deceleration, thereby improving the processing speed and processing efficiency.

[0028] (connected state) First, the following description will explain the connected state of the bed 18. Fig. 4 is a front view of the bed 18 in the connected state. Fig. 5 is an enlarged view of the part surrounded by the dashed line in Fig. 4. Fig. 6 is a rear view of the bed 18 in the connected state and a partially enlarged view thereof. As shown in Figs. 4 to 6, the beds 18 are connected by a connecting member 80 in the connected state. The connecting member 80 includes a first connecting member 81, a second connecting member 82, and a plurality of spacers 83.

[0029] As shown in FIGS. 4 and 5, the first connecting member 81 has a metal plate 84 and a plurality of bolts 85. When the bed 18 is installed, the first bed 41 is disposed with the first spindle mounting portion 53 adjacent to the left side of the second spindle mounting portion 63 of the second bed 43. A flat portion 53A, to which the metal plate 84 is attached, is provided at the right end of the front surface of the first spindle mounting portion 53, approximately in the center in the up-down direction. The flat portion 53A is formed with, for example, flat surfaces parallel to the left-right and up-down directions, and threaded portions (female threaded portions) 55 (see FIG. 7) into which the bolts 85 are threaded. Two threaded portions 55 are formed side by side in the up-down direction. Similarly, the front surface of the second spindle mounting portion 63 is provided with a flat portion 63A, to which the metal plate 84 is attached. The flat portion 63A is formed with two threaded portions 56 (see FIG. 7) into which the bolts 85 are threaded. Metal plate 84 is, for example, a rectangular metal plate that is long in the left-right direction when viewed from the front, and has a plurality of (for example, four) bolts 85 inserted from the front. Metal plate 84 is fixed to flat portions 53A, 63A by screwing each of the four inserted bolts 85 into threaded portions 55, 56 formed on flat portions 53A, 63A, respectively. The left end of metal plate 84 is fixed to flat portion 53A by two bolts 85, and the right end is fixed to flat portion 63A by the remaining two bolts 85.

[0030] 6, the second connecting member 82 has a metal plate 88 and a plurality of (e.g., eight) bolts 89. A flat portion 53B to which the metal plate 88 is attached is provided at the lower end of the back surface of the first spindle mounting portion 53. Similar to the flat portion 53A, the flat portion 53B is formed with a flat surface and a threaded portion 57 (see FIG. 8) to which the bolt 89 is threadedly engaged. Similarly, a flat portion 63B to which the metal plate 88 is attached is provided at the back surface of the second spindle mounting portion 63. A threaded portion 58 (see FIG. 8) to which the bolt 89 is threaded is formed at the flat portion 63B. The metal plate 88 is, for example, a metal plate having a generally rectangular shape that is long in the left-right direction when viewed from the back, and is fixed to each of the flat portions 53B, 63B by screwing eight bolts 89 from the rear. The metal plate 88 has a greater width in the left-right direction than the metal plate 84, and its left portion is fixed to the flat portion 53B by four bolts 89, and its right portion is fixed to the flat portion 63B by four bolts 89.

[0031] The connecting member 80 also has a plurality of (e.g., two) spacers 83. The spacer 83 is, for example, a flat metal plate that is long in the front-rear direction and is sandwiched between the first and second spindle mounting portions 53, 63 with its plane facing the left-right direction. The two spacers 83 are arranged at positions spaced a predetermined distance apart in the up-down direction. For example, the upper spacer 83 is arranged above the position of the metal plate 84 (see FIG. 5), and the lower spacer 83 is arranged at the position of the metal plate 88. The first and second beds 41, 43 are arranged close to each other with the two spacers 83 sandwiched therebetween and a gap 73 provided between them. Therefore, in the connected state of the bed 18, the metal plates 84, 88 are fixed to the first and second beds 41, 43, respectively, with a plurality of bolts 85, 89, with the spacer 83 sandwiched between them. As a result, the spacer 83 ensures a predetermined gap 73 to reduce the propagation of vibration, while the metal plates 84, 88 provided on the front and rear surfaces firmly fix the first and second beds 41, 43.

[0032] For example, the user places the first and second beds 41, 43 close to each other and adjusts the height using the legs 45. The user adjusts the positions of the screwed portions 55, 56 of the flat portions 53A, 63B, etc. while sandwiching the spacer 83. The user checks the positions of the screwed portions 55, 56 of the flat portions 53A, 63B, etc. and the holes in the metal plate 84, and then fixes the two metal plates 84, 88 with bolts 85, 89. The front faces of the first and second beds 41, 43 are fixed by a first connecting member 81, and the rear faces are fixed by a second connecting member 82, preventing relative positional misalignment.

[0033] In addition, in the bed 18 of this embodiment, first and second spindle mounts 53, 63 are attached to the first and second turret mounts 52, 62, respectively. The first and second spindle mounts 53, 63 are disposed at positions spaced above the installation surface 71 and mount the first and second spindle units 21, 31 thereon. When the first and second beds 41, 43 are coupled, the first spindle mount 53 and the second spindle mount 63 are connected by a connecting member 80. In this configuration, the first and second spindle mounts 53, 63, disposed a certain distance above the installation surface 71, are connected by the connecting member 80 so as to butt against each other. By placing the heavy first and second spindle units 21, 31 on the coupled first and second spindle mounts 53, 63, the weight balance of the first and second beds 41, 43 is improved, allowing for more stable installation.

[0034] (Split state) Next, the separated state will be described with reference to Figures 7 and 8. As shown in Figures 7 and 8, when bed 18 is in the separated state, connecting member 80 shown in Figures 5 and 6 is removed, and first and second beds 41, 43 are separated. For example, as described above, in machine tool 10 of this embodiment, the acceleration and deceleration of the motor are changed depending on whether the bed is in the connected or separated state. For this reason, a user may select the connected state when prioritizing ease of installation and relocation, for example. Alternatively, a user may select the separated state when prioritizing machining accuracy or shortening of machining time.

[0035] As shown in Figs. 7 and 8, the bed 18 is in a state where the metal plates 84, 88 and the spacer 83 shown in Figs. 5 to 7 have been removed. Meanwhile, a position adjustment jig 90 is attached to the bed 18 in the separated state. The position adjustment jig 90 has a front side adjustment jig 91 attached to the front sides of the first and second spindle mounting portions 53, 63, and a rear side adjustment jig 92 attached to the rear sides of the first and second spindle mounting portions 53, 63. First, the front side adjustment jig 91 will be described. As shown in Fig. 7, the front side adjustment jig 91 has a first position adjustment jig 91A attached to the flat portion 53A of the first spindle mounting portion 53, and a second position adjustment jig 91B attached to the flat portion 63A of the second spindle mounting portion 63.

[0036] The first position adjustment jig 91A includes a first fixing member 93 and a plurality of (two in this embodiment) first adjustment members 94. The first fixing member 93 is, for example, a metal member having a substantially rectangular parallelepiped shape that has a predetermined thickness in the front-rear direction and is elongated in the up-down direction when attached. A threaded portion 65 is formed on the flat portion 53A in addition to the threaded portion 55 into which the bolt 85 of the first connecting member 81 is threaded (see FIG. 5 ). The threaded portion 65 is, for example, arranged vertically alongside the two threaded portions 55 and formed above the threaded portion 55. The first fixing member 93 is fixed to the flat portion 53A by the bolt 95 inserted from the front and threaded into the threaded portion 65. The bolt 95 that fixes the first fixing member 93 may be the same member as the bolt 85 that fixes the metal plate 84, or may be a different member. Furthermore, the threaded portion 65 onto which the bolt 95 is threaded may be the same as the threaded portion 55 onto which the bolt 85 is threaded. That is, the first fixing member 93 may be attached at the same position as the metal plate 84.

[0037] The first fixing member 93 has two holes formed therethrough in the left-right direction. Two first adjustment members 94 are inserted into each of the two holes. The first adjustment member 94 is, for example, a bolt having a male thread formed on its outer circumferential surface. The first adjustment member 94 may also be, for example, a cylindrical metal rod having a male thread formed on its outer circumferential surface without a head (headless screw). The two holes in the first fixing member 93 have female threads formed on their inner circumferential surfaces. The first adjustment member 94 is screwed into the first fixing member 93 from the left side, and a nut 96 is screwed onto the right end protruding from the first fixing member 93. The relative position of each of the two first adjustment members 94 with respect to the first fixing member 93 in the left-right direction is adjusted by adjusting the screw-engagement position of the first adjustment member 94 with respect to the hole in the first fixing member 93 and the nut 96. The length (protrusion amount) of the first adjustment member 94 protruding to the right from the first fixing member 93 is adjusted depending on the screw-engagement position.

[0038] Similarly, the second position adjustment jig 91B has a second fixing member 98 and a plurality of (two in this embodiment) second adjustment members 99. The second fixing member 98 is fixed to the flat portion 63A by threading a bolt 101 into the threaded portion 66 (see FIG. 5) of the flat portion 63A. Two second adjustment members 99 (bolts or headless screws) are threaded into two holes in the second fixing member 98 from the right side. By adjusting the position at which each of the two second adjustment members 99 is threaded into the second fixing member 98 or a nut 102, the relative position of each of the two second adjustment members 99 to the second fixing member 98 in the left-right direction is adjusted, and the length by which each of the second adjustment members 99 protrudes to the left is adjusted.

[0039] Each of the two second adjustment members 99 is attached at the same position as each of the two first adjustment members 94 in the up-down direction. Furthermore, for example, a flat surface is formed on the tip of each of the first and second adjustment members 94, 99. The flat surfaces at the tip of the two first adjustment members 94 are in partial contact or surface contact with the flat surfaces at the tip of the two second adjustment members 99. For example, if the first adjustment member 94 is screwed in more deeply and the screw-engagement position is shifted to the right, causing the first adjustment member 94 to protrude further to the right, the second adjustment member 99 is pushed to the right by the first adjustment member 94. Therefore, the gap 73 widens in accordance with the protrusion amounts of the first and second adjustment members 94, 99. In other words, the gap 73 between the first and second spindle mounting portions 53, 63 is adjusted in accordance with the fixed position of the first adjustment member 94 relative to the first fixed member 93 and the fixed position of the second adjustment member 99 relative to the second fixed member 98.

[0040] 8 has the same configuration as the front-side adjustment jig 91. Therefore, in the following description of the rear-side adjustment jig 92, descriptions of parts that are the same as those of the front-side adjustment jig 91 will be omitted as appropriate. As shown in FIG. 8, the rear-side adjustment jig 92 has a first position adjustment jig 92A attached to the flat portion 53B and a second position adjustment jig 92B attached to the flat portion 63B. The first position adjustment jig 92A has a substantially L-shaped first fixing member 103 and a first adjustment member 105 that is screwed into the first fixing member 103. The first fixing member 103 is fixed to the flat portion 53B by bolts 107. The first adjustment member 105 is, for example, a bolt or a headless screw, which is screwed into the first fixing member 103 from the left side (the right side in Figure 8), and by adjusting the position at which it screws into the hole in the first fixing member 103 or the nut 109, the relative position (amount of protrusion) to the first fixing member 103 in the left-right direction can be adjusted.

[0041] Similarly, the second position adjustment jig 92B has a second fixed member 111 and a second adjustment member 113 that is screwed into the second fixed member 111. The second fixed member 111 is fixed to the flat portion 63B by a bolt 115. The second adjustment member 113 is screwed into the second fixed member 111 from the right side, and its position in the left-right direction (amount of protrusion) is adjusted by adjusting the position at which it is screwed into the second fixed member 111 and a nut 117. The right tip surface of the first adjustment member 105 and the left tip surface of the second adjustment member 113 are in contact with each other. Therefore, the gap 73 between the first and second spindle mounting portions 53, 63 is adjusted according to the amount of screwing of the first and second adjustment members 105, 113. Furthermore, in the separated state, the first and second beds 41, 43 are arranged with a gap 73 between them, with only the first adjustment member 94 and the second adjustment member 99, and the first adjustment member 105 and the second adjustment member 113 of the position adjustment jig 90 in contact with each other, and with the other portions spaced apart. With this configuration, the gap 73 between the first and second beds 41, 43 in the separated state can be adjusted by the position adjustment jig 90 in the same way as in the connected state. Therefore, the first and second processing devices 11, 12 can be arranged in the same position regardless of whether the bed is in the connected or separated state. This eliminates the need to adjust the configuration of the machine tool 10 (such as the destination position of the loader 13) depending on whether the bed is in the connected or separated state.

[0042] (Parameter settings) As described above, the control device 17 receives a selection from the operation panel 15, for example, whether the bed 18 is in a connected state or a separated state, and changes the acceleration and deceleration according to the selected state. For example, the control device 17 sets the time constants of the motors' acceleration and deceleration in the separated state to half of the time constants in the connected state. The control device 17 changes the time constants of the first X-axis motor 24A, the first Z-axis motor 25A, the second X-axis motor 34A, and the second Z-axis motor 35A (hereinafter sometimes referred to as "each motor") as the motors whose time constants are to be changed. As a result, the first and second processing devices 11 and 12 move the first and second turret devices 22 and 32 in the front-rear and left-right directions at greater acceleration and deceleration in the separated state. For example, the time required for one acceleration or deceleration operation (slide feed operation) can be reduced by approximately several tenths of a second.

[0043] For example, when machine tool 10 is delivered from the manufacturer to a customer and the system is started for the first time, control device 17 receives a selection of the connected state or the separated state on operation panel 15. For example, as shown in screen 121 of FIG. 9 of another embodiment described later, control device 17 may display selection buttons 124, 125 for selecting the connected state or the separated state and an OK button 129 for confirming the selection on the touch panel of operation panel 15, and receive the selection of the state. Control device 17 executes control data D1 in CPU 17A and holds a value indicating the connected state or the separated state, for example, using a nonvolatile relay circuit (hold relay) of the ladder circuit. When the connected state is selected, control device 17 sets a value indicating 1 in the relay circuit, for example, and when the separated state is selected, sets a value indicating zero in the relay circuit.

[0044] When the control device 17 executes an NC program and starts machining, it references the value of this nonvolatile relay circuit and sets a time constant corresponding to the selected state. The time constant data D2 (see FIG. 2) in the memory device 17B contains, for example, time constants to be set for each motor in the connected state and the disconnected state. The control device 17 sets the time constant used to control each motor based on the time constant data D2. When a value of "1" is set in the relay circuit, the control device 17 sets, for example, a value of 120 as the time constant (e.g., a setting value in the NC program) to be used to control each motor. Therefore, the control device 17 uses the same time constant value for controlling the left-right movement of the first and second X-axis motors 24A and 34A. The same time constant value is also used for controlling the front-rear movement of the first and second Z-axis motors 25A and 35A. The first and second turret devices 22 and 32 move in the front-rear and left-right directions at the same acceleration and deceleration.

[0045] Furthermore, if the relay circuit is set to a value of "0," the control device 17 sets the time constant used to control each motor to, for example, 60. Therefore, the control device 17 sets the time constant in the separated state to half the time constant in the connected state. The time constant in the separated state is not limited to half the time constant in the connected state, but may be reduced by other factors, such as 1 / 3 or 3 / 5. This reduces (halves) the time constant used to control each motor in the separated state, shortening, for example, the time required for the current supplied to each motor to rise and shortening the response time of each motor to a speed command, thereby increasing acceleration or deceleration. This shortens the movement time of the first X-axis slide device 24 and the like, improving machining efficiency.

[0046] On the other hand, in the case of the coupled specification, the time constant used to control each motor becomes relatively large. For example, the time constant is set to a value that does not affect or has an extremely small effect on machining accuracy even if vibration propagates from one of the first and second machining devices 11, 12 to the other. This reduces vibrations generated by acceleration or deceleration of slide movement, and the first and second machining devices 11, 12 can reduce the impact of vibrations generated by their own acceleration or deceleration on the other device.

[0047] Therefore, the control device 17 uses time constants (setting values) that change the acceleration and deceleration of each motor as parameters of the present disclosure. When the separated state is selected on the operation panel 15, the control device 17 sets the time constant based on the time constant data D2, and makes the acceleration and deceleration of each motor larger than the acceleration and deceleration of each motor when the connected state is selected. As a result, when the user selects the separated state, which is less affected by vibration, the time required for the slide movement of the first and second turret devices 22, 32 can be shortened, and the time required for processing can be shortened.

[0048] The first X-axis slide device 24 moves the first turret device 22 in the left-right direction (an example of the first axis direction of the present disclosure). The first Z-axis slide device 25 slides the first turret device 22 in the front-rear direction (an example of the second axis direction of the present disclosure), which is perpendicular to the left-right direction. The motors of the present disclosure are the first X-axis motor 24A and the first Z-axis motor 25A, which are the driving sources of the slide devices. This reduces the impact of vibrations generated by the movement of the first turret device 22 on the machining accuracy of the second machining device 12 when they are connected. When they are separated, the movement time of the first turret device 22 is shortened, thereby shortening the machining time.

[0049] Furthermore, the control device 17 sets a time constant (an example of a first time constant in the present disclosure) that sets the acceleration of the first X-axis motor 24A and a time constant (an example of a second time constant in the present disclosure) that sets the acceleration of the first Z-axis motor 25A. When the separated state is selected on the operation panel 15, the control device 17 reduces the time constant of the first X-axis motor 24A from the value (120) used in the coupled state by a predetermined percentage (to 60), and reduces the time constant of the first Z-axis motor 25A from the value (120) used in the coupled state by the same percentage as the first time constant (to 60). This changes the time constants at the same rate in the front-rear direction and the left-right direction, thereby reducing the load on the control device 17 for setting the time constants and for processing using the time constants. Furthermore, the acceleration and deceleration can be increased or decreased in the same manner in both the front-rear direction and the left-right direction.

[0050] In the parameter setting process described above, the control device 17 changes both the acceleration and deceleration, but it may change only one of them. For example, the control device 17 may increase only the acceleration in the separated state compared to the connected state. Furthermore, the control device 17 increases the acceleration and deceleration by decreasing the time constant in the separated state compared to the connected state, but this is not limited to this. The control device 17 may decrease the time constant in the connected state compared to the separated state, thereby increasing the acceleration, etc. For example, in a bed 18 structure in which the vibrations generated by the two accelerations are canceled out by increasing the vibrations propagated in the connected state to a certain magnitude, the control device 17 may increase the acceleration, etc. in the connected state to reduce the vibration. Furthermore, although the control device 17 changes the acceleration, etc. of both the first and second processing devices 11 and 12, it may also change the acceleration, etc. of only one of the first processing device 11 or the second processing device 12 depending on the selected state.

[0051] Furthermore, in the parameter setting process described above, the acceleration and deceleration in both the forward / backward and left / right directions are changed, but the acceleration, etc., in only one of the directions may be changed. For example, the control device 17 may change the acceleration and deceleration in only the forward / backward direction (first and second Z-axis motors 25A, 35A). Furthermore, in the parameter setting process described above, the motors of the slide device, such as the first X-axis motor 24A, are set as the setting targets, but the motors of other devices placed on the bed 18 may also be set as the setting targets. For example, the control device 17 may change the acceleration, etc., of the first and second spindle motors 21A, 31A or the first and second turret motors 22A, 32A. Specifically, the control device 17 may increase the acceleration and deceleration of the first and second spindle motors 21A, 31A in the separated state compared to the connected state.

[0052] Furthermore, in the parameter setting process described above, only the selection of the connected state or the separated state is accepted from the user, but a change in the value of the time constant to be set may also be accepted. Fig. 9 shows an example of a screen 121 displayed on the operation panel 15 of another embodiment. For example, when the system is started up or a predetermined operation input is made to the operation panel 15, the control device 17 displays the screen 121 on the operation panel 15 to accept a change in the time constant. As shown in Fig. 9, the control device 17 displays, for example, a message 123 asking "Did you install the bed in the connected state or the separated state?", along with a selection button 124 for selecting the connected state and a selection button 125 for selecting the separated state on the screen 121.

[0053] The control device 17 also displays on the screen 121 a display field 127 displaying a recommended time constant and a change rate display section 128 displaying the change rates of acceleration and deceleration. The control device 17 displays the recommended time constant in the display field 127 depending on the state of the selected one of the selection buttons 124, 125. FIG. 9 shows, as an example, a state in which the selection button 124 (connected state) is selected (hatched in the figure). The recommended time constant in the X-axis direction (left-right direction) in the display field 127 indicates the value (e.g., 120) of the time constant used to control the first and second X-axis motors 24A, 34A. The recommended time constant in the Z-axis direction (front-back direction) in the display field 127 indicates the value (e.g., 120) of the recommended time constant for the first and second Z-axis motors 25A, 35A. When the selection button 125 for the separated state is selected, the control device 17 displays, for example, "60" as the recommended time constant in the X-axis direction and Z-axis direction.

[0054] The control device 17 also displays the rate of change of acceleration and deceleration when the time constant is changed, assuming that the recommended time constant for the coupled state (e.g., 120) is 100%, on the rate of change display unit 128. The control device 17 accepts a change to the value of the time constant displayed in the display field 127 in response to a touch operation or the like on the display field 127, and changes the rate of change in the rate of change display unit 128 in response to the change in the value in the display field 127. For example, when a time constant less than "120" is input, the control device 17 displays the rate of change of acceleration and deceleration that increases in accordance with the decrease in the time constant on the rate of change display unit 128. Note that the control device 17 may accept a single value (e.g., 120) as the time constant for one state, for example, the coupled state, and use the accepted value for both the X-axis and Z-axis directions. The control device 17 may also accept different time constants for each of the first and second X-axis motors 24A and 34A and the first and second Z-axis motors 25A and 35A.

[0055] The control device 17 also displays an OK button 129 and a cancel button 131 on the screen 121. When the OK button 129 is selected, the control device 17 sets the time constant displayed in the display field 127 as the time constant used to control each motor, and uses it in processing control, etc. When the cancel button 131 is selected, the control device 17 terminates the display of the screen 121. In this case, the control device 17 may display the screen 121 again and accept the time constant at the next system startup or in response to an operation input to the operation panel 15 after startup. Note that, when accepting only the selection of a state as in the above embodiment without accepting a change of the time constant as shown in FIG. 9 , the control device 17 may display, for example, only the selection buttons 124 and 125, the OK button 129, and the cancel button 131 on the operation panel 15. The control device 17 may accept the selection of a state using the selection buttons 124 and 125 and set the time constant based on the selection of the OK button 129.

[0056] In the above-described alternative embodiment, the control device 17 displays a screen 121 on the operation panel 15 for selecting the connected state or the separated state, and displays the recommended time constant value for the selected state (display field 127). The control device 17 accepts changes to the displayed recommended time constant value, and when the time constant value is changed, displays the rate of change in acceleration and deceleration of each motor compared to before the change (change rate display unit 128). In this way, if the recommended time constant in the connected state affects machining accuracy, the user can set the time constant while observing changes in acceleration, etc., to adjust it to a value that does not affect machining. Also, if the user wants to further improve machining efficiency in the separated state, they can change the time constant to increase acceleration, etc.

[0057] Incidentally, the operation panel 15 is an example of a reception device in the present disclosure. The first and second spindle devices 21, 31 are an example of a spindle device. The first and second spindle motors 21A, 31A, the first and second turret motors 22A, 32A, the first and second X-axis motors 24A, 34A, and the first and second Z-axis motors 25A, 35A are an example of motors in the present disclosure. The first and second turret devices 22, 32 are an example of a turret device. The first X-axis motor 24A is an example of a first motor. The first Z-axis motor 25A is an example of a second motor. The first X-axis slide device 24 and the first Z-axis slide device 25 are an example of a slide device. The bolts 85, 89 are an example of a fastening member. The left-right direction, or X-axis direction, is an example of a first axis direction. The front-rear direction, or Z-axis direction, is an example of a second axis direction.

[0058] As described above, the present embodiment provides the following effects. In one aspect of this embodiment, the control device 17 sets a time constant corresponding to the state selected on the operation panel 15, either the connected state or the separated state, and drives the first X-axis motor 24A and the first Z-axis motor 25A using the set time constant during machining by the second machining device 12 to control the first machining device 11. This reduces the impact of vibrations generated by driving the first X-axis motor 24A, etc. on machining by the second machining device 12 in the connected state. Furthermore, in the separated state, the acceleration and deceleration of the first X-axis motor 24A, etc. are increased compared to the connected state, thereby improving the production efficiency of the first machining device 11. This allows the user to select whether to use the bed 18 in the separated mode or the connected mode when installing the machine tool 10, and then to set appropriate acceleration and deceleration simply by operating the operation panel 15 after installation.

[0059] It goes without saying that the present disclosure is not limited to the above-described embodiments, and various improvements and modifications are possible within the scope of the present disclosure. For example, in the above embodiment, a member that secures the first and second beds 41, 43 is used as the connecting member 80, but this is not limited to this. For example, a vibration suppression device that reduces propagating vibrations, such as that disclosed in Patent Document 1 (International Publication No. 2010 / 110030), may be used as the connecting member. Therefore, the connecting member of the present disclosure is not limited to a metal plate, a bolt, or the like, and may include a vibration-damping member such as rubber. Furthermore, although the connecting member 80 is configured to fix both the front and rear surfaces of the bed 18, it may be configured to fix only one of them. That is, the connecting member 80 may be configured to include only one of the first connecting member 81 and the second connecting member 82. The connecting member 80 may also be configured to fix the front surface at two or more locations. The connecting member 80 does not need to include the spacer 83.

[0060] In the above embodiment, a time constant for changing the acceleration and deceleration of the motor is used as a parameter of the present disclosure, but this is not limiting. For example, the parameter may be the period of the current or voltage applied to the motor, or the maximum current or maximum voltage value. Alternatively, if a brake device is provided on the motor, a value for setting the strength of the brake during deceleration may be set as a parameter. Therefore, various setting values ​​used for controlling the motor can be used as parameters of the present disclosure. Furthermore, the number of processing devices mounted on the bed 18 is not limited to two, but may be three or more. Furthermore, the bed 18 may be configured to be divisible into three or more parts. Furthermore, the first and second machining devices of the present disclosure are not limited to lathes, but may be other machining devices, for example, machining centers. Therefore, the machine tool 10 may be equipped with a parallel two-axis machining center. Furthermore, various configurations can be used as the first and second machining devices, for example, horizontal lathes, vertical lathes, milling machines, drill presses, etc. [Explanation of symbols]

[0061] 10 machine tool, 11 first processing device, 12 second processing device, 15 operation panel (reception device), 17 control device, 18 bed, 21 first spindle device (spindle device), 21A first spindle motor (motor), 22 first turret device (turret device), 22A first turret motor (motor), 24 first X-axis slide device (slide device), 24A first X-axis motor (motor, first motor), 25 first Z-axis slide device (slide device), 25A first Z-axis motor (motor, second motor), 31 second spindle device (spindle device), 31A second spindle motor (motor), 32 second turret device (turret device), 32A second turret motor (motor), 34A second X-axis motor (motor), 35A second Z-axis motor (motor), 41 first bed, 43 second bed, 51 First base, 52 first turret mounting portion, 53 first spindle mounting portion, 61 second base, 62 second turret mounting portion, 63 second spindle mounting portion, 73 gap, 80 connecting member, 84, 88 metal plate, 83 spacer, 85, 89 bolt (fastening member), 91A, 92A first position adjustment jig, 91B, 92B second position adjustment jig, 93, 103 first fixing member, 94, 105 first adjustment member, 98, 111 second fixing member, 99, 113 second adjustment member, 121 screen.

Claims

1. a first processing device and a second processing device that perform processing on a workpiece; a bed having a first bed on which the first processing device is placed and a second bed on which the second processing device is placed, the bed being changeable between a connected state in which the first bed and the second bed are connected to each other by a connecting member and a separated state in which the first bed and the second bed are separated by removing the connecting member; a motor that functions as a drive source for the first processing device; a reception device that receives a selection of the connected state or the separated state; a control device that sets parameters used to control the motor to parameters corresponding to a state selected by the reception device from the connected state and the separated state, and drives the motor according to the set parameters during processing by the second processing device to control the first processing device; A machine tool equipped with:

2. The parameters are: a set value for changing the acceleration of the motor; The control device 2. The machine tool according to claim 1, wherein when the separated state is selected by the reception device, the parameters are set to increase the acceleration of the motor compared to the acceleration of the motor when the connected state is selected.

3. The first processing device is a spindle device that holds the workpiece and rotates the workpiece; a turret device that can be fitted with a plurality of tools and that performs machining on the workpiece held by the spindle device using the tools; a slide device that slides the turret device in a first axis direction and a second axis direction perpendicular to the first axis direction; and The motor 3. The machine tool according to claim 1, wherein the drive source is the slide device.

4. The slide device is a first motor that moves the turret device in the first axial direction; a second motor that moves the turret device in the second axial direction; and The parameters are: a first time constant that sets the acceleration of the first motor; a second time constant that sets the acceleration of the second motor; and The control device 4. The machine tool according to claim 3, wherein, when the separated state is selected by the reception device, the first time constant is reduced by a predetermined percentage from a value used in the connected state, and the second time constant is reduced by the predetermined percentage from a value used in the connected state.

5. The connecting member is A plate-shaped metal plate; a plurality of fastening members for fixing the metal plate; a spacer sandwiched between the first bed and the second bed; and The bed is 5. The machine tool according to claim 1, wherein in the connected state, with the spacer sandwiched between the first bed and the second bed, the metal plate is fixed to each of the first bed and the second bed by a plurality of the fastening members.

6. The bed is In the separated state, a first position adjustment jig is attached to the first bed, and a second position adjustment jig is attached to the second bed, The first position adjustment jig is a first fixing member fixed to the first bed; a first adjustment member whose position relative to the first fixed member is adjustable; and The second position adjustment jig is a second fixing member fixed to the second bed; a second adjustment member whose position relative to the second fixing member is adjustable; and Each of the first position adjustment jig and the second position adjustment jig includes: In the separated state, the first adjustment member and the second adjustment member are attached to the first bed and the second bed in a state in which they are in contact with each other, The first bed and the second bed are A machine tool as described in any one of claims 1 to 5, wherein the first adjustment member and the second adjustment member are arranged with a gap between them, and the gap is adjusted depending on the fixed position of the first adjustment member relative to the first fixed member and the fixed position of the second adjustment member relative to the second fixed member.

7. The first processing device is a first spindle device that holds the workpiece and rotates the workpiece around a spindle; a first turret device to which a plurality of tools can be attached and which performs machining on the workpiece held by the first spindle device using the tools; and The first bed is a first base placed on an installation surface of the machine tool; a first turret mounting portion mounted on the first base and configured to mount the first turret device thereon; a first spindle mounting portion attached to the first turret mounting portion, disposed at a position spaced above the installation surface, and configured to mount the first spindle device thereon; and The second processing device is a second spindle device that holds the workpiece and rotates the workpiece about a direction parallel to the spindle; a second turret device to which a plurality of tools can be attached and which performs machining on the workpiece held by the second spindle device using the tools; and The second bed is a second base placed on the installation surface; a second turret mounting portion mounted on the second base and configured to mount the second turret device thereon; a second spindle mounting portion attached to the second turret mounting portion, disposed at a position spaced above the installation surface, and configured to mount the second spindle device thereon; and The first bed and the second bed are The machine tool according to claim 1 , wherein in the coupled state, the first spindle mounting portion and the second spindle mounting portion are coupled by the coupling member.

8. The control device 8. A machine tool according to claim 1, wherein the reception device displays a screen for selecting the connected state or the separated state, displays recommended parameter values ​​for the selected state, accepts changes to the displayed recommended parameter values, and, when the parameter values ​​are changed, displays the rate of change in acceleration and deceleration of the motor compared to before the change.

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