Working machinery

Abstract

This design achieves space savings in machine tools while maintaining the functionality of the mist collector. [Solution] A machine tool in one embodiment has a partition wall that divides the space above the base inside the housing into a machining chamber where machining is performed by a tool and a housing chamber that houses the headstock. This machine tool includes a work spindle rotatably supported on the headstock with its tip exposed to the machining chamber, a coolant discharge unit located in the machining chamber that discharges coolant when machining a workpiece supported by the work spindle, a mist collector located in the space above the headstock in the housing chamber and having an outlet that opens to the side of the housing, a mist intake port provided in the partition wall and opening toward the machining chamber, and piping arranged in the housing chamber that connects the intake port of the mist collector and the mist intake port.

Description

Technical Field

[0001] The present invention relates to a machine tool, and particularly to an arrangement configuration of a mist collector for collecting coolant mist.

Background Art

[0002] When machining a workpiece in a machine tool, coolant is supplied for cooling the tool and the workpiece and removing chips. Since this coolant becomes mist in the machining chamber, if it is discharged outside the machine as it is, it will cause pollution in the factory. Therefore, a mist collector for collecting coolant mist is provided (see Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] Such a mist collector is generally installed separately from the machine tool or attached to the outer surface of the housing (splash guard) of the machine tool. In the former case, it is necessary to secure an installation space for the mist collector outside the machine tool. Also, space for piping connecting the machining chamber and the mist collector is required. On the other hand, in the latter case as well, it is necessary to secure space for the mist collector outside the machine, and interference with other structures must be prevented.

Means for Solving the Problems

[0005] One aspect of the present invention is a machine tool having a partition wall that divides the space above the base inside the housing into a machining chamber where machining is performed with a tool and a housing chamber that houses the headstock. This machine tool comprises a work spindle rotatably supported on the headstock with its tip exposed to the machining chamber, a coolant discharge unit located in the machining chamber that discharges coolant when machining a workpiece supported by the work spindle, a mist collector located in the space above the headstock in the housing chamber and having an outlet that opens to the side of the housing, a mist intake port provided in the partition wall and opening toward the machining chamber, and piping arranged in the housing chamber that connects the intake port of the mist collector and the mist intake port. [Effects of the Invention]

[0006] According to the present invention, it is possible to reduce the space required for machine tools while maintaining the function of the mist collector. [Brief explanation of the drawing]

[0007] [Figure 1] This is a perspective view showing the external appearance of the machine tool according to this embodiment. [Figure 2] This is a hardware configuration diagram of a machine tool. [Figure 3] This is a perspective view showing the internal structure of a machine tool. [Figure 4] This is a front view showing the internal structure of the containment chamber. [Figure 5] Figure 4 is a cross-sectional view taken along the arrow AA, showing the configuration of the mist collector. [Figure 6] This is a view taken in the direction of arrow B in Figure 4. [Figure 7] This is a cross-sectional view taken along the CC arrow in Figure 6. [Figure 8] This diagram shows the arrangement configuration of the mist collector. [Figure 9] This is a diagram illustrating the maintenance structure of the mist collector. [Figure 10] This is a diagram illustrating the maintenance structure of the mist collector. [Figure 11] This diagram illustrates the filter replacement structure of the mist collector. [Figure 12]This diagram illustrates the filter replacement structure of the mist collector. [Modes for carrying out the invention]

[0008] One embodiment of the present invention will be described below with reference to the drawings. Figure 1 is a perspective view showing the external appearance of a machine tool according to this embodiment. For convenience, the vertical, horizontal, and left-right directions, as viewed from the front of machine tool 1, will be described as the X, Y, and Z directions, respectively.

[0009] Machine tool 1 is a turning center that processes a workpiece into a desired shape by changing tools as needed. A processing chamber 4 is provided inside the housing 2 of machine tool 1. Processing equipment for processing the workpiece is installed in the processing chamber 4. An operation panel 6 for operating the processing equipment is provided on the side of the housing 2.

[0010] A coolant tank 8 for storing coolant supplied to the machining chamber 4 is provided adjacent to the housing 2 of the machine tool 1 (see Figure 3). The machine tool 1 is also equipped with a mist collector 10 for recovering the coolant (also called "oil mist") that has been atomized in the machining chamber 4. In this embodiment, the machine tool 1 is made more space-saving by devising the arrangement of the mist collector 10. The details are described below.

[0011] Figure 2 is a hardware configuration diagram of machine tool 1. The machine tool 1 includes an information processing device 100, a machining control device 102, and a machining device 104. The machining control device 102 functions as a numerical control unit and outputs control signals to the machining device 104 according to a machining program (NC program). The machining device 104 drives the workpiece spindle and moves the tool to machine the workpiece according to instructions from the machining control device 102.

[0012] The processing device 104 includes a workpiece spindle drive unit 110, a tool post drive unit 112, a coolant supply device 114, and a mist collector drive unit 116. In this embodiment, as will be described later, a first workpiece spindle and a second workpiece spindle are provided as workpiece spindles capable of holding a workpiece. The workpiece spindle drive unit 110 includes a first spindle drive unit 120 that drives the first workpiece spindle and a second spindle drive unit 122 that drives the second workpiece spindle. The tool post drive unit 112 drives a turret-type tool post, which will be described later.

[0013] The coolant supply device 114 supplies coolant to the processing chamber 4. The coolant is used as cutting oil for removing heat and lubricating the tool and workpiece during processing, but is also used as a cleaning liquid for removing chips scattered in the processing chamber 4. The coolant supply device 114 is configured by arranging, in a coolant circulation path not shown, the coolant discharge unit 124, the pump 126, and the control valve 128 in addition to the coolant tank 8 described above.

[0014] A plurality of coolant discharge units 124 are provided in the processing chamber 4. The coolant discharge unit 124 includes a nozzle that discharges coolant and an actuator that drives the nozzle, and discharges coolant toward a set target position. The pump 126 pumps up the coolant stored in the coolant tank 8 and supplies it to the coolant discharge unit 124. The control valve 128 includes a plurality of on-off valves and appropriately switches the coolant flow path in the coolant circulation path.

[0015] The mist collector drive unit 116 drives the mist collector 10 when coolant is discharged in the processing chamber 4. The mist collector drive unit 116 includes a motor 60 that drives the fan of the mist collector 10 (details will be described later).

[0016] The information processing device 100 includes an operation panel 6 and outputs a control command to the processing control device 102 based on an operator's operation input. The information processing device 100 also controls the screen displayed on the monitor of the operation panel 6 according to the operator's operation input.

[0017] Each component of the information processing device 100 is realized by hardware including arithmetic units such as a CPU (Central Processing Unit) and various coprocessors, memory and storage devices, and wired or wireless communication lines connecting them, as well as software stored in the storage devices that supplies processing instructions to the arithmetic units. The computer program may consist of device drivers, an operating system, various application programs located at a higher layer, and libraries that provide common functions to these programs.

[0018] Figure 3 is a perspective view showing the internal structure of machine tool 1. For ease of explanation, the front and left and right side covers (splash guards) of the housing 2 are shown removed. The machine tool 1 has a partition wall 12 that divides the space above the bed 3 (base) inside the housing 2 into a processing chamber 4 and a storage chamber 5.

[0019] The machining apparatus 104 is configured by mounting a first headstock 14, a second headstock 16, and a tool post 18, etc., on the bed 3. The first headstock 14 is housed in a storage chamber 5, and the second headstock 16 and tool post 18 are housed in a machining chamber 4. Since no moving parts are provided in the storage chamber 5, it is sized to be sufficient for housing the first headstock 14 and is considerably smaller than the machining chamber 4. The first headstock 14 rotatably supports the first workpiece spindle 20. The tip of the first workpiece spindle 20 penetrates the partition wall 12 and is exposed to the machining chamber 4. A chuck capable of holding a workpiece is attached to the tip of the first workpiece spindle 20. The first workpiece spindle 20 is rotationally driven by the first spindle drive unit 120 described above.

[0020] The second headstock 16 rotatably supports the second work spindle 22. The second headstock 16 is covered with a dedicated cover 17 to prevent the ingress of chips and coolant. The second work spindle 22 is exposed from the cover 17. A chuck capable of holding a workpiece is attached to the tip of the second work spindle 22. The second work spindle 22 is rotationally driven by the second spindle drive unit 122 described above. The second work spindle 22 can be replaced with a tailstock (not shown) as needed.

[0021] The first work spindle 20 and the second work spindle 22 are arranged to face each other coaxially in the Z direction. The first headstock 14 and the second headstock 16 each have built-in spindle motors for rotating the work spindles. The second headstock 16 is movable in the Z direction by driving a moving mechanism (not shown). That is, the second headstock 16 can move the second work spindle 22 closer to or further away from the first work spindle 20, thereby adjusting the distance between the first work spindle 20 and the second work spindle 22. This moving mechanism is, for example, a screw feed mechanism using a ball screw.

[0022] The tool post 18 is located in the machining chamber 4, further back in the depth direction than the second spindle head 16, and functions as a "tool holder." The tool post 18 comprises a turret base 24 and a turret 26. The turret base 24 has a rotation axis extending in the Z direction and rotatably supports the turret 26. The turret base 24 is equipped with a spindle motor for rotationally driving the turret 26. The turret 26 is provided with a plurality of clamping / unclamping mechanisms (not shown) along its periphery. These clamping / unclamping mechanisms allow for the attachment and detachment of multiple different types of tools (not shown).

[0023] The turret base 24 is movable in the X, Y, and Z directions by driving a moving mechanism (not shown), allowing adjustment of the positional relationship between the workpiece held by each workpiece spindle and the tool held by the turret 26. This moving mechanism is, for example, a screw feed mechanism using a ball screw.

[0024] With this configuration, the turret 26 is movable in the X, Y, and Z directions. Furthermore, the turret 26 is rotatable around an axis extending in the Z direction, thereby allowing for the switching of the tool used for machining. In other words, the turret 26 moves relative to the workpiece supported by one or both of the first workpiece spindle 20 and the second workpiece spindle 22 in three orthogonal axial directions, enabling cutting or turning of the workpiece using the tool.

[0025] The coolant discharge unit 124 described above is provided at a predetermined location in the machining chamber 4 (not shown). The coolant discharge unit 124 discharges coolant toward the tool when machining the workpiece, and also discharges coolant to wash away chips scattered in the machining chamber 4. Some or all of the tools supported by the turret 26 may also be equipped with the function of a so-called through-spindle coolant system. That is, an internal passage for circulating coolant may be provided in the tool, and this internal passage may be connected to a coolant circulation path. An outlet for discharging coolant is provided at the tip of the tool, forming one end of the internal passage. By discharging coolant from the tip of the tool in this way during machining, it is possible to improve machining accuracy, shorten machining time, extend tool life, and improve chip evacuation performance.

[0026] The coolant discharged from the coolant discharge section 124 becomes a mist within the machining chamber 4, and if it is discharged outside the machine as is, it will cause contamination of the factory. For this reason, the machine tool 1 is equipped with a mist collector 10 to collect this oil mist. The mist collector 10 is located in the space above the first spindle head 14 in the containment chamber 5. The partition wall 12 is provided with a mist intake port 28 that opens toward the machining chamber 4. A pipe 30 is installed in the containment chamber 5 that connects the intake port 10a of the mist collector 10 to the mist intake port 28.

[0027] A cover 32 is provided on the side of the partition wall 12 to cover the mist intake port 28 from above. The cover 32 opens downwards to restrict the direct entry of coolant discharged from the coolant discharge port 124 into the mist intake port 28. When the mist collector 10 is driven, oil mist in the processing chamber 4 is taken in by the mist intake port 28 and guided through the piping 30 to the intake port 10a. The oil mist is collected inside the mist collector 10, and the purified air is discharged from the exhaust port 10b.

[0028] Figure 4 is a front view showing the internal structure of containment chamber 5. In the containment chamber 5, a support column 40 is erected on the bed 3 separately from the first spindle head 14. A table 42 is provided at the upper end of the support column 40, and the mist collector 10 is placed on the table 42. The first spindle head 14 is located on the front side in the depth direction of the containment chamber 5, and the support column 40 is located on the back side in the depth direction. Because the table 42 is provided so as to extend from the upper end of the support column 40 toward the front, the mist collector 10 is cantilevered by the support column 40 and is located in front of the support column 40 in the depth direction.

[0029] The mist collector 10 is positioned relatively further back than the first headstock 14. The outlet 10b of the mist collector 10 communicates with the outside of the machine through an opening 34 provided in the housing 2. That is, the opening 34 is provided in the housing 2 at a position corresponding to the outlet 10b. The piping 30 extends from the intake port 10a of the mist collector 10, curves slightly towards the front, and connects to the mist intake port 28. The piping 30 is positioned above the first headstock 14. In this way, the mist collector 10 and the piping 30 are positioned to make effective use of the space above the first headstock 14 in the housing chamber 5.

[0030] Figure 5 is a cross-sectional view taken along the AA arrow in Figure 4, showing the configuration of the mist collector 10. The mist collector 10 is constructed by housing a fan 52, a first filter 54, and a second filter 56 in a case 50. An airflow passage 58 is formed inside the case 50 for air introduced from the intake port 10a. The airflow passage 58 connects the intake port 10a and the outlet port 10b. The first filter 54, fan 52, and second filter 56 are arranged from the upstream side of the airflow passage 58. The second filter 56 is positioned near the outlet port 10b. A motor 60 that rotates the fan 52 is installed in the case 50. The fan 52 and the first filter 54 are coaxially mounted on the rotating shaft 62 of the motor 60.

[0031] The first filter 54 and the second filter 56 each have a mesh of a predetermined coarseness and sequentially collect oil mist contained in the air introduced from the mist collector 10. The second filter 56 has a finer mesh than the first filter 54 and collects oil mist with a smaller particle size that could not be captured by the first filter 54. A hood 64 (exhaust port cover) is detachably attached to the case 50 so as to surround the outlet 10b. Note that the configuration of such a mist collector 10 is publicly known, as described in, for example, Patent Document 2 (Japanese Patent No. 7144631), so a detailed explanation is omitted.

[0032] When the motor 60 is driven to operate the mist collector 10, the fan 52 and the first filter 54 rotate around their axes. As a result, air containing oil mist from the machining chamber 4 is drawn in through the mist intake port 28 (see Figure 4) and guided through the piping 30 to the intake port 10a of the mist collector 10. At this time, the air introduced into the case 50 through the intake port 10a has the oil mist separated as it passes through the first filter 54 and is guided downstream via the fan 52 (see dashed arrow). The oil mist separated by the first filter 54 is returned to the machining chamber 4 through a drain (not shown) and then collected in the coolant tank 8.

[0033] The air that has passed through the first filter 54 passes through the second filter 56 to remove any remaining oil mist. The purified air, free from oil mist, is then discharged outside the machine through the outlet 10b.

[0034] Figure 6 is a view in the direction of arrow B in Figure 4, showing the location of the mist intake port 28 in the processing chamber 4. The mist intake port 28 is located on the front side in the depth direction of the processing chamber 4. That is, the mist intake port 28 is provided on the upper front side in the depth direction (Y direction) of the partition wall 12. The mist intake port 28 is located above (directly above) the first workpiece spindle 20 that is exposed in the processing chamber 4.

[0035] The cover 32 is large enough to cover the mist intake port 28 and is positioned to avoid interference with the tool post 18 (the area enclosed by the dashed line). A concave space 70 is formed in the partition wall 12 so as not to interfere when the tool post 18 moves in the X direction (see Figure 3).

[0036] As shown in Figure 4, the intake port 10a of the mist collector 10 is positioned relatively higher than the mist intake port 28. As a result, the piping 30 curves slightly downward from the intake port 10a towards the mist intake port 28. Consequently, it becomes easier to return the liquefied coolant in the piping 30 to the machining chamber 4. In other words, coolant droplets flow more easily from the mist intake port 28 into the machining chamber 4.

[0037] Figure 7 is a cross-sectional view taken along the CC arrow in Figure 6. The tip of the pipe 30 penetrates the opening 72 of the partition wall 12. The tip of the pipe 30 is slightly enlarged in diameter and protrudes into the processing chamber 4, with its open end forming the mist intake port 28. The cover 32 has a cover body 80 that covers the mist intake port 28 from above and the side, and a shielding portion 82 provided inside the cover body 80. The shielding portion 82 extends diagonally downward from the surface of the cover body 80 facing the mist intake port 28. This prevents coolant that has splashed in the lower part of the processing chamber 4 from bouncing back and directly entering the mist intake port 28.

[0038] The upper surface of the cover body 80 is an inclined surface that slopes downward, allowing coolant droplets adhering to the upper surface to fall downward into the machining chamber 4. The cover body 80 opens downward, and a slit 84 of an appropriate size is also provided on the base end side of its side. The slit 84 is located on the base end side of the piping 30, closer to the mist intake port 28. This prevents the direct inflow of coolant into the mist intake port 28 while ensuring sufficient area for the inlet to guide the oil mist.

[0039] Figure 8 shows the arrangement of the mist collector 10. Figure 8(A) shows the state with the hood 64 attached, and Figure 8(B) shows the state with the hood 64 removed. For ease of explanation, the figure also shows the state with the front cover of the housing 2 removed.

[0040] As shown in Figure 8(A), the main body of the mist collector 10 (i.e., the functional parts such as the fan 52 and filters 54, 56) is housed in the housing chamber 5, and only the hood 64 protrudes from the outside of the housing 2. The hood 64 regulates the direction of air discharged from the mist collector 10 within the factory, preventing, for example, the air from being directed towards workers. By making only the hood 64 protrude in this way, the part that protrudes from the housing 2 can be made small.

[0041] Depending on the installation location and configuration at the factory, the hood 64 can also be removed. As shown in Figure 8(B), removing the hood 64 reduces the number of structures protruding from the surface of the housing 2, thereby saving space.

[0042] Figures 9 and 10 illustrate the maintenance structure of the mist collector 10. Figure 9 shows the support structure of the mist collector 10. Figures 9(A) and (B) are perspective views from above, and Figures 9(C) and (D) are perspective views from below. Figures 10(A) to (C) show how to remove the mist collector 10 during maintenance.

[0043] As shown in Figures 9(A) and (B), the table 42 is constructed by assembling a bracket 42a and an oil pan 42b vertically. The bracket 42a is cantilevered by a support column 40. The bracket 42a functions as a "fixed table" fixed to the upper end of the support column 40, while the oil pan 42b functions as a "movable table" that can slide in the Z direction relative to the bracket 42a.

[0044] As shown in Figures 9(C) and (D), the bracket 42a has three rows of guide holes 43 extending in the Z direction. Multiple screw holes 44 are provided on the lower surface of the oil pan 42b at positions opposite to the guide holes 43 (Figure 9(D)). The bracket 42a and the oil pan 42b are fastened together by attaching multiple screws 45 from the lower surface side of the bracket 42a (Figure 9(C)). In this embodiment, one screw 45 is provided on the leading end side in the sliding direction and two screws 45 are provided on the base end side in the sliding direction along each guide hole 43. These multiple guide holes 43 and multiple screws 45 constitute a "slide mechanism".

[0045] Specifically, by removing the screw 45 on the leading end in the sliding direction and loosening the screw 45 on the base end in the sliding direction, the oil pan 42b can be slid relative to the bracket 42a (Figure 9(D)). The oil pan 42b can move in the Z direction with the mist collector 10 mounted on it. When the oil pan 42b moves to the end of the sliding direction, the tip of the guide hole 43 acts as a stopper, locking the screw 45 on the base end in the sliding direction, and the oil pan 42b stops. Therefore, the oil pan 42b and the mist collector 10 will not fall off.

[0046] As shown in Figures 10(A) to (C), when removing the mist collector 10, the worker first removes the cover 11 located on the lower half of the side cover 2b (splash guard), then removes the piping 30 from the mist collector 10, and then removes and loosens some of the aforementioned screws 45.

[0047] Next, the oil pan 42b on which the mist collector 10 is mounted is slid out through the opening 34 in the side cover 2b (splash guard) to the outside of the housing 2, and the mist collector 10 can be removed to perform maintenance. At this time, it is not necessary to remove the entire front cover 2a (splash guard) of the housing 2, so the work can be easily performed. In the modified version, the upper part of the front cover 2a (including the opening 34) may be removed to allow the oil pan 42b to be pulled out.

[0048] Figures 11 and 12 illustrate the filter replacement structure of the mist collector 10. Figures 11(A) to (C) show the mounting structure between the case 50 and the hood 64. Figures 12(A) and (B) show the opening and closing structure of the outlet 10b by the hood 64.

[0049] As shown in Figure 11(A), the hood 64 is attached to the case 50 so as to surround the outlet 10b. As shown in Figure 11(B), the hood 64 is attached near the outlet 10b via a hinge 64a, allowing the outlet 10b to be opened and closed in the manner of an opening and closing door. The hood 64 has a plurality of rectifier plates 64b above and below. The air discharged from the mist collector 10 is rectified by these rectifier plates 64b so as to be directed diagonally upward and discharged outside the machine.

[0050] As shown in Figure 11(C), the outlet 10b is opened by opening the hood 64. The second filter 56 can be removed from this state. In other words, this opening and closing structure of the hood 64 makes it easy to replace the second filter 56.

[0051] As shown in Figures 12(A) and (B), the mist collector 10 is exposed through the opening 34 in the side cover 2b, allowing the hood 64 to be easily opened and closed from outside the housing 2.

[0052] In this embodiment, the hood 64 is shown to be attached to the case 50 in a way that allows it to be opened and closed, but a configuration in which the hood 64 is attached to the case 50 in a way that allows it to be detachably attached may also be adopted.

[0053] The machine tool has been described above based on the embodiments. In this embodiment, a first headstock 14 and a second headstock 16 are provided as headstocks to support the workpiece spindle. The space above the bed 3 inside the housing 2 is divided into a machining chamber 4 and a storage chamber 5 by a partition wall 12, with the first headstock 14 positioned in the machining chamber 4 and the second headstock 16 positioned in the storage chamber 5. Since chips and coolant from the machining chamber 4 do not scatter into the storage chamber 5, there is no need to provide a dedicated cover for the first headstock 14.

[0054] Since the first headstock 14 is fixed to the bed 3, the housing chamber 5 is made to be of a size that is necessary and sufficient for the installation of the first headstock 14, but there is empty space above the first headstock 14. In this embodiment, this empty space is effectively utilized to house the mist collector 10 inside the housing 2. By arranging the mist collector 10 and piping 30 in the space above the first headstock 14 and reducing the number of structures installed outside the machine or protruding from it, it is possible to save space in the machine tool 1 while maintaining the function of the mist collector 10.

[0055] In particular, by erecting a support column 40 at the back of the storage chamber 5 and supporting the mist collector 10 in a cantilevered manner toward the front, the mist collector 10 can be positioned above the first headstock 14 without interfering with it. Because the mist collector 10 and the first headstock 14 are separated, vibrations from the operation of the mist collector 10 can be prevented or suppressed from being transmitted to the first headstock 14. Therefore, the operation of the mist collector 10 does not affect the machining accuracy of the workpiece.

[0056] Meanwhile, in the machining chamber 4, the mist intake port 28 is positioned by making effective use of the space above the first workpiece spindle 20. This also prevents interference between the cover 32 of the mist intake port 28 and the tool post 18.

[0057] [Differentiation] In the above embodiment, an example was shown in which a first work spindle 20 and a second work spindle 22 are provided as work spindles, and the two are arranged opposite each other in the axial direction. In a modified example, a configuration without the second work spindle 22 may be adopted. A tailstock may be provided instead of the second work spindle 22.

[0058] In the above embodiment, the machine tool 1 was described as a turning center, but it may also be a combined machining center that combines the functions of both a turning center and a machining center. It may also be a turning center-based combined machining center capable of milling and turning.

[0059] When machine tool 1 is a multi-tasking machine, a tool spindle is provided instead of a turret (tool post). The tool spindle functions as a "tool holder" and is rotatably supported on the spindle head. The spindle head is driven in the X, Y, and Z directions by a moving mechanism. The multi-tasking machine is further provided with a tool storage unit and a tool changing unit. The tool storage unit includes a magazine for storing tools. The tool changing unit includes an ATC (Automatic Tool Changer) and, according to a change instruction from the machining control device 102, retrieves a tool from the tool storage unit and replaces it with the tool on the tool spindle.

[0060] It should be noted that the present invention is not limited to the embodiments and modifications described above, and the components can be modified and implemented without departing from the spirit of the invention. Various inventions may be formed by appropriately combining the multiple components disclosed in the embodiments and modifications described above. In addition, some components may be deleted from all the components shown in the embodiments and modifications described above. [Explanation of symbols]

[0061] 1 Machine tool, 2 Enclosure, 3 Bed, 4 Machining chamber, 5 Storage chamber, 6 Control panel, 8 Coolant tank, 10 Mist collector, 12 Partition wall, 14 First spindle, 16 Second spindle, 17 Cover, 18 Tool post, 20 First work spindle, 22 Second work spindle, 26 Turret, 28 Mist intake, 30 Piping, 32 Cover, 40 Support column, 42 Table, 50 Case, 52 Fan, 54 First filter, 56 Second filter, 58 Flow passage, 60 Motor, 64 Hood, 82 Shielding section, 100 Information processing device, 102 Machining control device, 104 Machining device, 124 Coolant discharge section.

Claims

1. A machine tool having a partition wall that divides the space above the base inside the housing into a machining chamber where machining is performed with tools and a housing chamber that houses the headstock, A workpiece spindle, rotatably supported on the headstock and with its tip exposed to the machining chamber, A coolant discharge unit is located in the machining chamber and discharges coolant when machining a workpiece supported by the workpiece spindle, A mist collector is positioned in the space above the spindle head in the aforementioned housing chamber and has an outlet that opens to the side of the housing, A mist intake port is provided in the partition wall and opens toward the processing chamber, A pipe is installed in the aforementioned containment chamber and connects the intake port of the mist collector to the mist intake port, A machine tool equipped with the following features.

2. In the aforementioned storage chamber, a support column is erected on the base separately from the main shaft base, The machine tool according to claim 1, wherein the mist collector is supported by the support column.

3. The support column is provided on the rear side in the depth direction of the storage chamber. The machine tool according to claim 2, wherein the mist collector is cantilevered to the support column and positioned in front of the support column in the depth direction.

4. The machine tool according to claim 1 or 2, wherein the mist intake port is provided above the workpiece spindle which is exposed to the processing chamber.

5. The machine tool according to claim 4, wherein a cover is provided on the side of the partition wall in the processing chamber to cover the mist intake port from above and restrict the direct ingress of coolant discharged from the coolant discharge section.

6. The first headstock, which serves as the headstock, The first work spindle, which serves as the work spindle, In the aforementioned machining chamber, a second work spindle is positioned opposite the first work spindle, A second spindle head is positioned in the machining chamber and rotatably supports the second workpiece spindle, and is movable in a direction that brings the second workpiece spindle closer to or further away from the first workpiece spindle, In the aforementioned machining chamber, a tool holder is positioned further back in the depth direction than the second headstock and is capable of holding a tool, Equipped with, The machine tool according to claim 4, wherein the mist intake port is located on the front side in the depth direction of the processing chamber.

7. The mist collector is positioned further back in the depth direction than the first headstock. The machine tool according to claim 6, wherein the piping is located above the first headstock.

8. The machine tool according to claim 7, wherein the intake port of the mist collector is positioned at a relatively higher position than the mist intake port.

9. The mist collector is placed on a table provided at the upper end of the support column. The aforementioned table is, A fixed table that is fixed to the aforementioned support column, A movable table on which the mist collector is placed, A sliding mechanism formed between the fixed table and the movable table, Includes, The machine tool according to claim 2, wherein the mist collector is mounted on the movable table and is configured to be slidable to the outside of the housing.

10. An opening is provided in the housing at a position corresponding to the outlet of the mist collector. The aforementioned mist collector is In the case where a flow passage is formed connecting the intake port and the discharge port, A fan arranged in the aforementioned flow path, A filter positioned near the outlet in the flow passage, A hood is attached to the case so as to surround the aforementioned discharge port, Includes, The hood is attached to the case so that the discharge port can be opened and closed. The machine tool according to claim 1, wherein the filter is configured to be replaceable when the outlet is open.

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