JP2010131708A - Machine tool system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a machine tool system capable of stably receiving and delivering tools and suppressing the lowering of the machining accuracy of a workpiece and the occurrence of noise. <P>SOLUTION: This machine tool system 10 includes a machining spindle 36 which allows tools T for machining the workpiece W to be attached thereto and detached therefrom and machines the desired portion of the workpiece W through a swing arm 32, main stockers 80a, 80b which hold the plurality of tools T attachable to and detachable from the machining spindle 36 and index the tools by the rotating operation, a sub stocker 100 for holding the tools T so as to be able to receive and deliver the tools between the main stockers 80a, 80b, and a tool receiving and delivering mechanism 140 for receiving and delivering the tools between the main stockers 80a, 80b and the sub stocker 100. The turning center C1 of the machining spindle 36, the rotating center C2 of the main stockers 80a, 80b, and the receiving and delivering position for the tools T between the sub stocker 100 and the tool receiving and delivering mechanism 140 are substantially positioned within the same vertical plane YZ. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a machine tool system including a tool stocker that holds a plurality of tools that can be attached to and detached from a machining spindle that performs machining on a workpiece.

  In general, a machine tool system that includes a tool stocker that holds a plurality of detachable tools and performs various types of machining on a workpiece while exchanging the tool mounted on the machining spindle is used. In such a machine tool system, it is preferable that the occupied area is small from the viewpoint of improving the efficiency of the installation space and conveying the workpiece to the adjacent machine tool. In particular, considering the relationship with other devices in the factory or the like, it is preferable that the width in the front view is small, but naturally the size of the tool stocker and the number of stored tools must be sufficiently and sufficiently secured.

  Patent Document 1 discloses a machine tool system including a main tool stocker and a sub tool stocker having a smaller number of storages in order to increase the number of tool storages without increasing the installation space. In this case, in order to change the tool from the main tool stocker to the machining spindle, after turning the tool pot of the main tool stocker by 90 degrees, the tool is pulled out by the swivel arm and turned by 180 degrees to be inserted (attached) to the machining spindle. It is carried out. Similarly, the tool is transferred to and from the machining spindle from the sub tool stocker.

Japanese Patent No. 2007-125642

  By the way, in the apparatus described in Patent Document 1, when transferring from the main tool stocker or the sub tool stocker to the machining spindle, at least three actions of pulling out from the tool pot, turning by a turning arm, and insertion into the machining spindle are performed. The operation which becomes is required.

  For this reason, since the operation related to the delivery of the tool is complicated and the above-mentioned turning operation is required, even a machine tool having a sufficient weight causes rolls and vibrations due to the turning operation. There is a possibility that the processing accuracy of the workpiece is reduced and noise is generated. In particular, in a space-saving system in which the width in front view is reduced, it is desirable to suppress the influence of the roll or the like as much as possible.

  The present invention has been made in consideration of the above-described conventional problems, and provides a machine tool system capable of stably delivering a tool and suppressing reduction in workpiece machining accuracy and generation of noise. The purpose is to do.

  A machine tool system according to the present invention includes a machining spindle for machining a desired part of the workpiece via a swivel arm to which a tool for machining the workpiece is attached, and a plurality of tools attachable to and detachable from the machining spindle. A first tool stocker for holding and indexing the tool by a rotating operation; a second tool stocker for holding a plurality of the tools so that the tool can be transferred between the first tool stocker; the first tool stocker and the second tool; A tool delivery mechanism for delivering the tool to and from the stocker, and the tool of the turning center of the machining spindle, the rotation center of the first tool stocker, and the tool delivery mechanism in the second tool stocker. The delivery position is substantially in the same vertical plane.

  According to such a configuration, the turning center, the rotation center, and the delivery position are set in substantially the same vertical plane, so that the delivery of the tool is stably performed linearly in the vertical plane. In addition, since the central axes of the rotating element and the turning element are not laterally shifted, it is possible to suppress the rolling and vibration of the entire apparatus and to suppress the generation of noise. Furthermore, since the influence of the rolling or the like on the workpiece machining by the machining spindle can be suppressed, machining accuracy can be ensured.

  Furthermore, if the delivery position of the first tool stocker with the tool delivery mechanism is within the same vertical plane, the occurrence of the roll or the like can be more reliably suppressed.

  Further, when the delivery position of the second tool stocker with the tool delivery mechanism is higher than the delivery position of the first tool stocker with the tool delivery mechanism, the installation space of the entire system is effectively reduced. be able to. In this case, although the center of gravity of the apparatus is increased by installing the second tool stocker above, since the roll or the like is prevented as described above, the stability of the entire system can be ensured.

  Furthermore, when the rotational drive source that rotationally drives the tool mounted on the machining spindle is arranged coaxially with the pivot center of the pivot arm, the occurrence of the roll or the like can be more reliably suppressed. it can.

  Furthermore, the first tool stocker is provided with a plurality of first holders that extend radially from the rotation center and hold the tool, and the second tool stocker has a second holder that holds the tool. When a plurality of tools are provided, the first holder and the second holder hold the tool of the second holder and the direction of the opening for holding the tool of the first holder. By disposing the opening so as to face each other in the same vertical plane, it is possible to easily transfer the tool by the tool transfer mechanism in the vertical plane while suppressing the occurrence of the rolling or the like. it can.

  According to the present invention, the turning center of the machining spindle, the rotation center of the first tool stocker, and the tool delivery position with the tool delivery mechanism in the second tool stocker are set in substantially the same vertical plane. As a result, the delivery of the tool can be performed linearly and stably in the vertical plane, and the center axis of the rotating element and swiveling element is not displaced laterally. And the generation of noise can be suppressed. Furthermore, since the influence of the rolling or the like on the workpiece machining by the machining spindle can be suppressed, machining accuracy can be ensured.

  Hereinafter, preferred embodiments of a machine tool system according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a partially cutaway perspective view of a machine tool system 10 according to an embodiment of the present invention. FIG. 2 is a front view of the machine tool system 10 shown in FIG. FIG. 3 is a side view of the machine tool system 10 shown in FIG. The machine tool system 10 performs drilling, boring, honing and the like on the workpiece W. Hereinafter, in order to specify the direction of the machine tool system 10, the left-right direction in FIG. 2 is the X direction (X1, X2 direction), the height direction is the Y direction (Y1, Y2 direction), and the X direction and the Y direction are The orthogonal depth direction is defined as the Z direction (Z1, Z2 direction) (see FIG. 3). The X direction and the Y direction are predetermined one direction in the horizontal plane and are orthogonal to each other.

  The machine tool system 10 includes a first machine tool 10a on the left side (arrow X1 side), a second machine tool 10b on the right side (arrow X2 side), and the first machine tool 10a and the first machine tool 10a and the first 2 A controller 12 that controls the machine tool 10b in an integrated and cooperative manner, and a tool stocker 11 that holds a plurality of detachable tools T. The first machine tool 10a and the second machine tool 10b are adjacently provided in parallel, and the surface plate 13, the workpiece moving device 14, and the frame 15 are shared. The surface plate 13, the workpiece moving device 14, and the frame 15 may be dedicated to the first machine tool 10a and the second machine tool 10b. In the present embodiment, the first machine tool 10a and the second machine tool 10b have the same structure, and the first machine tool 10a will be representatively described below.

  The first machine tool 10a is configured based on a surface plate 13 fixed to the floor. The surface plate 13 is narrow in the X direction and low in the Y direction. A workpiece moving device 14 and a frame 15 are attached to the upper surface of the surface plate 13.

  The workpiece moving device 14 includes workpiece tables 19a to 19c provided on the front side (arrow Z1 side) of the upper surface of the surface plate 13. Above the workpiece moving device 14, workpiece pressing and fixing devices 17a and 17b (see FIG. 3) for pressing and fixing the workpiece W placed on the workpiece tables 19a to 19c from above are provided. In the case of this embodiment, the work tables 19a to 19c are configured as rotating tables arranged at intervals of 120 °. 1, 2, and 5, the work pressing and fixing devices 17 a and 17 b are omitted from the illustration so that a support body 22, a turning arm 32, and the like described later can be visually recognized.

  As shown in FIG. 1, the frame 15 has a main stocker (first tool stocker) 80a and 80b corresponding to the first machine tool 10a and the second machine tool 10b, respectively, as a tool stocker 11 for storing a plurality of tools T. A sub stocker (second tool stocker) 100 disposed above the Z2 side of these main stockers 80a and 80b is supported.

  Such a frame 15 has four support columns 15a extending upward from both ends of the surface plate 13 in the arrow Z direction, and a plate 15b supported by the upper portions of the support columns 15a. The sub stocker 100 is supported by a leg portion 105 standing on the Z2 side of the plate 15b, and has a rectangular shape (elliptical shape) slightly longer in the Z direction. In addition, two sets of two support columns 15a in the Z direction constituting the frame 15 are provided, and a shutter 107 is provided between the two support columns 15a, and the shutter 107 is provided in each set. When the workpiece W is processed, the shutter 107 prevents cutting waste and cutting oil from scattering left and right outside the apparatus. The shutter 107 is opened during maintenance of the machining spindle 36 that performs machining on the workpiece W with the tool T.

  The first machine tool 10a includes a pair of Z rails 16 and 16 provided on the upper surface of the surface plate 13 and extending in the Z direction, a column 18 guided by the Z rail 16 and slid in the Z direction, It has a pair of Y rails 20 and 20 that extend in the Y direction on the front surface, and a support body 22 that is guided by the Y rails 20 and slides in the Y direction (see FIG. 2). The Z-direction position of the column 18 on the Z-rail 16 is detected by the Z-position sensor 16a, and the Y-direction position of the support 22 on the Y-rail 20 is detected by the Y-position sensor 20a and is supplied to the controller 12, respectively. .

  The column 18 reciprocates in the Z direction via a ball screw mechanism 26 under the action of a Z motor 24 provided behind the surface plate 13 (see FIG. 3). A rotary encoder (not shown) is attached to the Z motor 24, and the rotary encoder detects the rotation angle of the ball screw of the ball screw mechanism 26. The detected rotation angle of the ball screw is determined as the Z-direction position of the column 18. , It may be configured to be transmitted to each controller 12.

  The support 22 reciprocates in the Y direction via the ball screw mechanism 30 under the action of the Y motor 28 disposed inside the surface plate 13 (see FIG. 2). Further, a rotary encoder (not shown) is attached to the Y motor 28, the rotation angle of the ball screw of the ball screw mechanism 30 is detected by the rotary encoder, and the detected rotation angle of the ball screw is detected as the Y-direction position of the support 22. May be transmitted to each controller 12. The column 18 and the Y rail 20 have an appropriately long shape in the Y direction, and can move the support 22 for a relatively long distance.

  As shown in FIG. 4, the support 22 includes a revolving arm 32 that revolves (rotates) in a vertical plane (XY plane) facing the workpiece W facing in the Z1 direction, and an arm motor 34 that revolves the revolving arm 32. The machining main shaft 36 provided near the end in the centrifugal direction of the swivel arm 32 and rotatably supported with respect to the swivel arm 32 and oriented in the Z1 direction, and a spindle motor (rotation drive source) for rotating the machining main shaft 36 38. The arm motor 34 is, for example, a direct motor. The support body 22 is configured based on a frame body 40, and an arm motor 34 is provided inside the frame body 40. The arm motor 34 has a stator 34a fixed to the frame body 40 and a hollow rotor 34b provided inside the stator 34a.

  The turning arm 32 is fixed to the end of the rotor 34b on the arrow Z1 side, and turns under the action of the arm motor 34. The angle of the turning arm 32 with respect to the support 22 is measured by an angle sensor 41 (see FIG. 1) and supplied to the controller 12.

  As is clear from FIG. 4, the turning arm 32 can turn endlessly as long as it can turn at least once (360 degrees). The machining main shaft 36 is provided at a position separated from the turning center C1 of the turning arm 32 by a distance R.

  In the revolving arm 32, a balancer 42 is provided on the side opposite to the side on which the machining main shaft 36 is provided (upper side in FIG. 4). The balancer 42 is a liquid tank containing a liquid such as coolant, and can balance by changing the amount of liquid inside according to the tool attached to the machining spindle 36. The balancer 42 may be a metal weight. The inside of the swivel arm 32 other than the place where the balancer 42 is provided has a hollow structure. The swivel arm 32 is considerably lighter than the support body 22, and does not impair the stability of the support body 22 and the first machine tool 10a when swung.

  The spindle motor 38 protrudes in the direction of the arrow Z2, and is fixed to the rear surface of the frame body 40 in the support body 22 so as to be coaxial with the arm motor 34. In this way, the spindle motor 38 and the arm motor 34 are arranged coaxially, that is, by making the turning center C1 of the turning arm 32 and the rotation center of the spindle motor 38 coaxial, the support 22 is configured as a compact unit. can do. Thus, if the spindle motor 38 does not exist on the axis of the machining spindle 36 and the spindle motor 38 is located near the center of the swivel arm 32, the mass and size of the balancer 42 can be reduced and supported. The body 22 can be made compact overall.

  The shaft 44 is provided through the hollow portion of the rotor 34 b, one end is fixed to the rotation shaft of the spindle motor 38, and the other end protrudes from the frame body 40 and reaches the side plate on the arrow Z <b> 1 side of the turning arm 32. . The shaft 44 is pivotally supported by bearings 45a, 45b, and 45c in this order at three locations, the arrow Z1 side end and the arrow Z2 side end of the swivel arm 32, and the arrow Z2 side end of the frame body 40.

  The pulley mechanism 46 includes a drive pulley 46a fixed to the shaft 44 between the bearing 45a and the bearing 45b, a driven pulley 46b fixed to the end of the machining main shaft 36 in the direction of the arrow Z2, and the drive pulley 46a and the driven pulley. The belt 46c is stretched between the belt 46b and the belt 46b. Thus, the drive mechanism using a pulley is preferable because the swivel arm 32 can be reduced in weight. In addition to the drive mechanism using a pulley, for example, the drive pulley 46a may be replaced with a gear, and the driven pulley 46b may be replaced with a pinion, and a drive transmission mechanism using a silent chain may be used. In this case, the driving force may be transmitted between the gear and the pinion via a plurality of gears.

  The pulley mechanism 46 is provided in a hollow portion in the turning arm 32, and the tension of the belt 46c is adjusted by a predetermined tension mechanism. With such a structure, the rotation of the spindle motor 38 is transmitted to the machining spindle 36 via the shaft 44 and the pulley mechanism 46.

  The machining spindle 36 is accommodated in a spindle cover 48 provided integrally with the turning arm 32, and a tool head 50 to which a tool T is attached is provided at the tip in the arrow Z1 direction. In addition, an unclamp lever 52 that releases the tool T from the tool head 50 and allows the tool T to be detached is provided at the end in the direction of the arrow Z2. The unclamp lever 52 has a shape that protrudes slightly outward as viewed from the turning center C1, and is operated by being pressed in the direction of the rotation center C by the unclamp block 53 (see FIG. 6), thereby unclamping the tool T. Can be clamped. Further, the unclamping lever 52 is returned to the original position by an elastic body (not shown) when the unclamping block 53 is separated, and the tool T in the tool head 50 can be clamped. Of course, the clamping and unclamping of the tool T by the tool head 50 may be a mechanism for clamping the tool T electrically.

  On the back side (the arrow Z2 side) of the swivel arm 32, a fixing device 64 is provided for holding the swivel arm 32 at a predetermined position by sandwiching a disk 62 made of a leaf spring or the like with a screw 60. The fixing device 64 includes a receiving seat 66 that contacts the back side of the disc 62, and a pressing piece 68 that holds the disc 62 between the receiving seat 66. The pressing piece 68 is provided at the tip of a rod 72 that is biased in the clamping direction by a disc spring 70. By pushing the rod 72 forward against the disc spring 70, the clamping state of the disc 62 is released, and the swivel arm 32 turns are possible. In the case of the present embodiment, since the disk 62 is configured by a leaf spring, the turning arm 32 does not fall down while the disk 62 is held, and the turning of the turning arm 32 can be reliably prevented.

  Returning to FIG. 1, the main stocker 80 a that accommodates the plurality of tools T that can be attached to and detached from the machining spindle 36 is provided on the upper and slightly left side (X1 side) of the plate 15 b corresponding to the first machine tool 10 a. . In the frame 15, a main stocker 80b having the same mechanism as the main stocker 80a is provided corresponding to the second machine tool 10b on the upper right side (X2 side) of the plate 15b. Hereinafter, the main stocker 80a will be described as a representative.

  As shown in FIG. 1 and FIG. 6, the main stocker 80a is viewed from the front with the rotating shaft 82 extending in the arrow Z direction, the magazine motor 83 that drives the rotating shaft 82, and the rotating shaft 82 as the center (FIG. 2). And a holding arm 84 provided radially in a range of about 270 degrees. A substantially C-shaped grip (first holder) 85 that holds the tool T is provided at the tip of each holding arm 84. The grip 85 is an elastic body. When the tool T is pushed into the C-shaped opening, the grip 85 is elastically expanded so that the tool T can be inserted. After the insertion, the grip 85 is closed to hold and hold the tool T. Can do. The held tool T can be pulled out from the C-shaped opening. The number of holding arms 84 is preferably about 16, for example. The grip 85 can be directly gripped through a bowl-shaped groove formed in the tool T, and a tool pot 126 described later is not interposed.

  In the main stocker 80a, a portion at about 90 degrees (excluding the range of 270 degrees where the holding arm 84 is provided) where the holding arm 84 is not provided is set to face downward during normal operation (during processing or when not in use) (see FIG. 2). Since the whole is above the plate 15b, the operation of the column 18 and the support 22 is not hindered. On the other hand, when exchanging the tool T of the machining spindle 36, the main stocker 80a is rotated to direct a predetermined holding arm 84 downward from the end of the plate 15b (see FIG. 5).

  Specifically, an empty holding arm 84 that does not hold the tool T is directed downward, and after adjusting the position of the column 18 in the Z direction, the support 22 is raised. As a result, as shown in FIG. 6, the tool T is held by the holding arm 84, and the unclamp lever 52 is operated in contact with the unclamp block 53 suspended from the upper part of the column 18, whereby the tool T is moved to the tool head. Unclamped to 50. Therefore, the tool T is extracted from the tool head 50 by retracting the column 18 in the direction of the arrow Z2.

  Next, the main stocker 80a is rotated, the holding arm 84 holding the tool T to be used from now on is directed downward, and the column 18 is advanced in the arrow Z1 direction. As a result, the target tool T is inserted into the tool head 50, and the unclamp lever 52 can be separated from the unclamp block 53 to clamp the tool T by lowering the support 22. Thereafter, the main stocker 80a is rotated so that all the holding arms 84 are arranged above the plate 15b as shown in FIG.

  As described above, there is no mechanism interposed between the main stocker 80a and the machining spindle 36 for delivering the tool T in the middle, and the holding arm 84 directly grips the tool T. And the attachment / detachment operation of the tool T can be performed directly under the action of the swivel arm 32. Therefore, since a dedicated attaching / detaching mechanism or the like is unnecessary, the structure is simplified, and the time required for attaching / detaching the tool is shortened.

  As shown in FIGS. 1 to 3, the sub stocker 100 is supported on the Z2 side of the main stocker 80a, 80b by a leg portion 105 standing from the plate 15b, and above the holding arm 84 of the main stocker 80a, 80b. Holds the tool T. In other words, the sub stocker 100 is a rectangular (elliptical) rotating magazine that can be simultaneously applied to the two main stockers 80a and 80b by being provided so as to straddle both the main stockers 80a and 80b in a front view of FIG. Yes, it rotates in a horizontal plane (XZ plane), and the tool T is indexed.

  Such a sub stocker 100 includes a base frame 110 that is a substantially rectangular frame fixed to the leg portion 105, a chain (moving mechanism) 112 wound around the outer surface of the base frame 110, and A rail (tool moving rail) 114 is provided below the chain 112 (in the Y2 direction) and fixed so as to go around the outer surface of the base frame 110 in parallel with the chain 112.

  Of the four corners of the rectangular shape, the chain 112 meshes with a drive gear 122 driven by a motor (drive source) 120 at one corner and meshes with a driven gear 124 at the other three corners. Thus, it can be circulated along the outer surface of the base frame 110.

  Furthermore, a plurality of holding arms 118 are juxtaposed and fixed to the chain 112 along the extending direction thereof. The holding arm 118 has a substantially Y shape substantially the same shape as the holding arm 84, but indirectly holds the tool T mounted on the tool pot 126 by engaging with the tool pot 126. .

  The holding arm 118 has a narrow rod-like portion on one end side fixed to the chain 112 and opens downward (Y2 direction) with a fork (second holder) 116 on the other end hanging (see FIG. 1 and 8). Unlike the grip 85 of the holding arm 84, the fork 116 is a bifurcated member that does not have an elastic mechanism or a movable part. That is, the holding arm 118 holds the tool pot 126 (tool T) by surrounding the tool pot 126 (tool T) inserted in the forked portion of the fork 116 with the rail 114. It is. Thereby, the sub stocker 100 can store a plurality of tools T. The number of holding arms 118 may be about 80, for example, and the tool pot 126 and the tool T in the holding arms 118 may be exchanged by, for example, providing a movable portion (not shown) on the rail 114 on the system back side (Z2 side) An operator may perform manually through this movable part.

  As described above, in the sub stocker 100, using the motor 120 as a drive source, the drive gear 122, the chain 112, and the driven gear 124 are moved through the holding arm 118 while sliding the tool pot 126 (tool T) against the rail 114. Functions as a moving mechanism. The drive mechanism may be, for example, a configuration using a belt / pulley mechanism instead of the chain 112, a configuration using a linear motor as a drive source, or the like. In short, a configuration in which the holding arm 118 can be moved smoothly. If it is.

  As shown in FIG. 7, the tool pot 126 is a substantially cylindrical container in which a flat portion 126 a along the axial direction is formed on the upper, lower, left, and right surfaces in a posture held by the fork 116, and its end surface (front surface). Is provided with a mounting hole 128 into which the tool T is attached and detached. In addition, a pair of left and right groove portions 130 and 132 extending in the Y direction perpendicular to the axial direction are provided on the left and right side plane portions 126a.

  Therefore, as can be understood from FIGS. 6 and 7, the fork 116 of the holding arm 118 is inserted along the extending direction (Y2 direction) of the pair of grooves 130, 130. The left and right side surfaces are held, and the lower surface is in contact with the rail 114, so that the entire tool pot 126 (tool T) is securely held. In this state, when the chain 112 is circulated and driven by the motor 120, the tool pot 126 (tool T) engaged between the forks 116 has its lower surface side flat portion 126a in sliding contact with the rail 114, and the chain Move with 112. Therefore, the rail 114 is preferably made of a material that allows the tool pot 126 to be smoothly slidably contacted. For example, a resin material such as nylon (polyamide) or a fluororesin is suitable.

  As shown in FIGS. 2 and 8, the rail 114 with which the tool pot 126 is slidably contacted as described above is formed with a pair of notches 134a and 134b at Z1 positions corresponding to the main stockers 80a and 80b, respectively. Yes.

  In the front view shown in FIG. 8, the notches 134a and 134b are aligned with the rotation shafts 82 of the main stockers 80a and 80b in the X direction. That is, the rotation center C2 of the main stockers 80a and 80b and the center position C4 in the width direction (X direction) of the notches 134a and 134b coincide with each other in the Y direction. Therefore, since the notches 134a and 134b and the rotary shaft 82 are both in the same vertical plane (YZ plane in FIG. 22), the holding arms 84 of the main stockers 80a and 80b are at the highest positions along the Y direction. When it is determined, it corresponds to the notches 134a and 134b. In this state, the holding arm 118 of the sub stocker 100 is indexed to a position corresponding to the notches 134a and 134b, so that the holding arm 118 and the holding arm 84 are opposed to each other in the Y direction across the notches 134a and 134b. it can.

  As described above, in the tool stocker 11, the openings of the grip 85 and the fork 116 can be set to face each other in the vertical direction (Y direction) in the front view shown in FIG.

  Therefore, in the tool stocker 11, a tool delivery having an operation center C3 corresponding to the notches 134a and 134b, that is, as shown in FIG. 8, is coincident with the center position C4 of the notches 134a and 134b in the Y direction. A mechanism (tool changer) 140 is provided. In FIG. 8, for simplification of the drawing, the center position C4 of the notches 134a and 134b is shown in a slightly lowered position, but naturally the center position C4 has a height position in the Y direction that is the same as that of the rail 114. It is the same position. Accordingly, the tool delivery mechanism 140 is driven and controlled in a state where the openings of the grip 85 and the fork 116 face each other, so that delivery of the tool T between the main stockers 80a and 80b and the sub stocker 100 can be performed easily and stably. Can be done.

  9 is a perspective view of the tool delivery mechanism 140, FIG. 10A is a side view of the tool delivery mechanism 140 shown in FIG. 9, and FIG. 10B shows the hand 146 of the tool delivery mechanism 140 from the state shown in FIG. 10A. It is a side view which shows the state lowered | hung. 9, 10A and 10B show the tool delivery mechanism 140 corresponding to one main stocker 80b and the notch 134b, but the mechanism corresponding to the other main stocker 80a and the notch 134a is substantially bilaterally symmetric. Since the configuration is basically the same except for the points described above, detailed description is omitted.

  As shown in FIGS. 9 and 10, the tool delivery mechanism 140 extends upward (in the Y1 direction) and has a substantially U-shape having a pair of claw portions 142 and 142 that can be engaged with a pair of groove portions 132 of the tool pot 126. Engaging member (second moving member) 144 and a substantially flat C-shaped hand (first moving member) 146 arranged between the claw portions 142 and 142 in a side view, which are supported by a frame 148. Has been.

  The engaging member 144 can be advanced and retracted in the Z direction by a pair of guide rods 154 connected to the rod 152 of the cylinder mechanism 150 that advances and retracts in the Z direction.

  The hand 146 includes an upper plate 156 that is parallel to a horizontal plane (XZ plane), and a lower plate 158 that is provided in parallel to the Y2 side of the upper plate 156 and protrudes in the Z1 direction from the upper plate 156. It is a flat C-shape. The distance between the upper plate 156 and the lower plate 158 is set to a distance suitable for the tool pot 126 moved by the holding arm 118 to be inserted and held from the X direction (see FIG. 10A).

  For the inner surfaces of the upper plate 156 and the lower plate 158 facing each other, for example, a material made of a material with which the tool pot 126 can smoothly slide in the same manner as the rail 114 is selected. ) And a resin material such as a fluororesin, and sliding members 156a and 158a made of a copper alloy, an aluminum alloy, or the like are disposed. On the other hand, a slider 160 is fixed to the back surface along the vertical direction (Y direction) connecting the upper plate 156 and the lower plate 158. The slider 160 is engaged with a rail 159 fixed to the frame 148 and extending in the Y direction so as to be movable up and down.

  A shaft 162 extending in the X1 direction protrudes from the side surface (X1 side in FIG. 9) of such a hand 146, and a link 164 having a bent shape in a side view shown in FIG. 10A is disposed. In the link 164, a through hole formed in a substantially central bent portion is pivotally supported by a hinge pin 166 protruding from the frame 148, and a shaft 162 is inserted into a long hole 168 formed on one end side, while the other end On the side, a pin 170 extending in the X1 direction is projected. The pin 170 is supported by the through hole of the lever member 175 at the tip of the rod 174 that can be advanced and retracted in the Z direction by the cylinder mechanism 172. A stopper 176 is provided on the back surface (Z2 side) of the bent portion of the link 164, and a stopper bolt 178 corresponding to the stopper 176 protrudes from the frame 148.

  Therefore, when the cylinder mechanism 172 is driven and the lever member 175 is moved back and forth in the Z2 direction, the link 164 swings around the hinge pin 166 and the shaft 162 moves up and down in the Y direction while moving in the long hole 168. That is, the hand 146 moves in the Y direction via the slider 160. Specifically, as shown in FIG. 10A, when the rod 174 is advanced in the Z1 direction, the link 164 swings upward and the hand 146 moves up in the Y1 direction. On the other hand, when the rod 174 is retracted in the Z2 direction from the state shown in FIG. 10A, as shown in FIG. 10B, the link 164 swings downward (arrow θ direction), and the hand 146 descends in the Y2 direction. The vertical position (Y direction position) of the shaft 162 due to the swing of the link 164 is detected by sensors (proximity sensors) 179a and 179b installed at the upper limit position and the lower limit position. The upper limit position of the hand 146 is also regulated by the contact between the stopper 176 and the stopper bolt 178, and the lower limit position of the hand 146 is also regulated by the retracted position of the rod 174.

  Such a tool delivery mechanism 140 is set so that the upper surface side (sliding contact member 158a) of the lower plate 158 of the hand 146 is substantially flush with the rail 114 when the hand 146 is at the upper limit position in the Y1 direction. The frame 148 is fixed so as to be suspended from the lower surface (Y2 side) of the base frame 110 (see FIGS. 3, 6, 8, and 10A). For this reason, in a state where the tool T is not delivered normally, the hand 146 is set at the upper limit position in the Y1 direction as shown in FIG. 8, so that the gap between the upper plate 156 and the lower plate 158 is set. The tool pot 126 (tool T) moved by the chain 112 can pass smoothly in the X direction. That is, the lower plate 158 (sliding contact member 158a) complements the notches 134a and 134b and functions as a part of the rail 114.

  Next, in the machine tool system 10 basically configured as described above, the transfer operation of the tool T between the main stocker 80a and the sub stocker 100 constituting the tool stocker 11 is mainly shown in FIGS. This will be described with reference to FIG. In addition, since the delivery operation | movement of the tool T between the other main stocker 80b and the sub stocker 100 is also substantially the same, description is abbreviate | omitted below.

  FIGS. 11 to 21 are explanatory diagrams showing states of operations for transferring the tool T between the main stocker 80 a and the sub stocker 100 under the control of the controller 12. 11A is a plan view schematically showing the vicinity of the notch 134a of the tool stocker 11, FIG. 11B is a front view of FIG. 11A, FIG. 11C is a side view of FIG. 11A, and FIG. The same applies to FIG.

  In FIG. 11 to FIG. 21, each component is schematically shown in comparison with FIG. 1 or the like for easy understanding. For example, the cylinder mechanism 172 that constitutes the tool delivery mechanism 140 is shown in FIG. In contrast to the placement (the axial direction is the arrow Z direction), FIG. 11C shows the vertical placement (the axial direction is the arrow Y direction) to clarify the function. Moreover, in FIG. 11A etc., the reference signs A to D are given to the respective tool pots 126 held in the sub stocker 100 for convenience, and may be referred to as tool pots 126A to 126D in the following description. In FIG. 11C and the like, the hatched area is an area (machining section) where the workpiece W is machined by the machining spindle 36, and the area of the tool stocker 11 is defined by the plate 15b (see FIG. 1). It is partitioned and prevents cutting waste and cutting oil from entering the tool stocker 11 side.

  First, an operation of transferring (returning) an unnecessary tool T (replacement target tool T) of the main stocker 80a to the sub stocker 100 will be described with reference to FIGS. Hereinafter, the tool T is held in advance by all the holding arms 84 of the main stocker 80a, and the tool pot 126 held by at least one holding arm 118 of the sub stocker 100 is empty without the tool T mounted thereon. It is assumed that this is the state. In the main stocker 80a and the sub stocker 100, a desired tool T can be easily and quickly determined under the control of the controller 12 by an identification address (not shown) written on the tool T.

  In this case, as shown in FIGS. 11A to 11C, first, the main stocker 80a is rotated, and the above-mentioned portion of about 90 degrees without the holding arm 84 (other than the range of about 270 degrees where the holding arm 84 is provided). Is set upward (Y1 side) to correspond to the notch 134a. At the same time, the chain 112 of the sub stocker 100 is driven to circulate, and the empty tool pot 126B to which the tool T is not mounted is indexed to correspond to the notch 134a. As a result, a desired tool pot 126B is disposed in the hand 146 of the tool delivery mechanism 140 (between the upper plate 156 and the lower plate 158).

  In FIG. 11C, reference numerals 180, 182, and 184 are sensors (proximity sensors) for detecting the presence or absence of the tool T. The sensor 180 detects that the desired tool T has been indexed to the position corresponding to the notch 134a in the sub stocker 100 and that the desired tool T has been received from the main stocker 80a side. The sensor 182 detects that the desired tool T has been indexed to a position corresponding to the notch 134a by the main stocker 80a. The sensor 184 indicates that the desired tool T is indexed to the delivery position (see FIGS. 5 and 6) with the machining spindle 36 by the main stocker 80a, or when the tool T is mounted on the machining spindle 36, the tool It is detected that T has detached from the holding arm 84 or the like.

  Subsequently, as shown in FIGS. 12A to 12C, the cylinder mechanism 172 of the tool delivery mechanism 140 is driven to lower the hand 146. As a result, the tool pot 126B held between the upper plate 156 and the lower plate 158 of the hand 146 is first engaged with the groove portion 130 and the fork 116, and then the groove portion 132 and the claw portion 142. Is lowered while being guided smoothly in the direction of arrow Y2.

  Then, as shown in FIGS. 12B and 12C, the empty tool pot 126B passes through the notch 134a and completely comes out of the holding arm 118, and is held by the hand 146 and the engaging member 144 of the tool delivery mechanism 140. It becomes a state.

  Next, as shown in FIGS. 13A to 13C, the cylinder mechanism 150 of the tool delivery mechanism 140 is driven, and the engaging member 144 in a state where the claw 142 is engaged with the groove 132 of the tool pot 126B is moved in the direction of the arrow Z2. With this, the tool pot 126B is retracted.

  In FIG. 13C, for ease of understanding, the tool pot 126B is shown to be retracted together with the hand 146 by the cylinder mechanism 150. However, as understood from FIG. The hand 146 is not displaced in the Z direction, the U-shaped engaging member 144 is displaced in the Z direction, and the tool pot 126B slides back in the hand 146. In this respect, since the upper plate 156 and the lower plate 158 of the hand 146 are provided with sliding contact members 156a and 158a made of substantially the same material as the rail 114, the tool pot 126B can be moved more smoothly. Of course, the hand 146 may be moved together with the engaging member 144 by the cylinder mechanism 150.

  Next, as shown in FIGS. 14A to 14C, the main stocker 80 a is rotated to index the holding arm 84 that holds the tool T to be replaced, and corresponds to the notch 134 a and the tool delivery mechanism 140. Then, as understood from FIGS. 14A and 14C, the axes of the tool T to be replaced and the empty tool pot 126 </ b> B coincide with each other. At the same time, as understood from FIG. 14B, the opening direction of the grip 85 of the holding arm 84 of the main stocker 80a and the opening direction of the fork 116 of the holding arm 118 of the sub stocker 100 are along the vertical direction (Y direction). That is, they face each other in a vertical plane.

  Therefore, as shown in FIGS. 15A to 15C, the cylinder mechanism 150 is driven to advance the engagement member 144 in the Z1 direction, and the tool pot 126B is advanced. As a result, the tool T to be exchanged and the tool pot 126B whose axes are aligned as described above are easily and reliably mounted.

  Subsequently, as shown in FIGS. 16A to 16C, the cylinder mechanism 172 is driven to raise the hand 146. As a result, the tool pot 126B whose upper and lower surfaces are held by the hand 146 and the tool T to be replaced attached thereto are guided by the groove portion 132 by the claw portion 142 and further by the groove portion 130 by the fork 116, and the arrow Y1. It rises smoothly in the direction.

  At this time, in the tool stocker 11, as shown in FIG. 16C, the tip of the fork 116 (lower end on the Y2 side) of the holding arm 118 that constitutes the sub stocker 100 and the claw portion 142 of the engaging member 144 that constitutes the tool delivery mechanism 140. An interval YC in the vertical direction (Y direction) from the tip (upper end on the Y1 side) is set to be shorter than the vertical direction (Y direction) length of the grooves 130 and 132. As a result, the tool pot 126 is always engaged with at least one of the fork 116 and the claw 142 by the grooves 130 and 132 during the raising and lowering operations by the hand 146. Accordingly, the hand 146 can stably move the tool pot 126 up and down by holding only the upper and lower surfaces, and the same applies to the transfer of the empty tool pot 126 shown in FIGS.

  In other words, since the tool delivery mechanism 140 has such a structure, it is not necessary to provide a member for holding the left and right side surfaces of the tool pot 126 in the hand 146, and in a state in which the tool T is not delivered. The hand 146 disposed in the notches 134 a and 134 b can be easily used as a part of the rail 114. Further, when the holding arm 118 and the holding arm 84 are set to the delivery position of the tool T (tool pot 126) shown in FIG. 16C, the tip end of the grip 85 of the holding arm 84 (the Y1 side upper end) is also the tip of the claw portion 142. Therefore, the tool T can be guided smoothly as in the case of the tool pot 126.

  When the raising of the tool pot 126B and the tool T is completed, the tool pot 126B is held by the holding arm 118 of the sub stocker 100 with the tool T mounted thereon, as shown in FIGS. 17A to 17C. In the tool stocker 11, the tool T can be easily transferred from the main stocker 80a to the sub stocker 100 using the empty tool pot 126B.

  Next, with reference to FIGS. 18-21, the operation | movement which transfers the desired tool T from the sub stocker 100 to the empty holding arm 84 of the main stocker 80a from which the unnecessary tool T was removed as mentioned above is demonstrated. .

  In this case, as shown in FIGS. 18A to 18C, first, the sub stocker 100 is driven to determine the tool pot 126C on which the desired tool T is mounted, and correspond to the notch 134a. That is, the tool pot 126 </ b> C on which the desired tool T is mounted is placed in the hand 146 of the tool delivery mechanism 140. 18A to 18C illustrate the state following the operation of FIGS. 17A to 17C described above, the empty holding arm 84 is already in the predetermined delivery position corresponding to the notch 134a in the main stocker 80a. Of course, the indexing operation may be performed on the main stocker 80a side if necessary.

  Next, as shown in FIGS. 19A to 19C, the cylinder mechanism 172 is driven to lower the hand 146. As a result, in the tool pot 126C (and the desired tool T attached thereto) held by the hand 146, the groove portion 130 is guided by the fork 116, and the groove portion 132 is further guided by the claw portion 142. It is lowered smoothly in the Y2 direction.

  When the lowering of the tool pot 126C and the tool T is completed, as shown in FIGS. 20A to 20C, the tool pot 126C is completely detached from the holding arm 118 and is held by the engaging member 144 via the groove 132. On the other hand, the desired tool T attached to the tool pot 126C is held by the grip 85 of the holding arm 84 constituting the main stocker 80a.

  Therefore, as shown in FIGS. 21A to 21C, the cylinder mechanism 150 is driven to retract the engaging member 144 in the Z2 direction, and the tool pot 126C is retracted. Then, while the tool T held by the holding arm 84 is detached from the tool pot 126C, only the tool pot 126C is retracted in the direction of the arrow Z2, thereby completing the delivery of the desired tool T to the main stocker 80a.

  Subsequent operations are substantially the same as described above, and the empty tool pot 126C from which the tool T has been detached is returned to the sub stocker 100, and other tools T of the main stocker 80a can be replaced as necessary. And so on.

  FIG. 22 is an explanatory diagram schematically showing the positional relationship between the axis centers and the operation centers of the elements constituting the machine tool system 10 according to the present embodiment.

  As shown in FIG. 22, in the machine tool system 10, the turning center C1 of the turning arm 32 for turning the machining spindle 36, the rotation center C2 of the main stockers 80a and 80b, the operation center C3 of the tool delivery mechanism 140, the rail The center positions C4 of the notches 134a and 134b provided in 114 are arranged in the same vertical plane YZ.

  That is, the turning center C1 is the turning center of the turning arm 32 and the rotation center of the machining spindle 36 (the rotation center of the spindle motor 38). The turning arm 32 is moved in the Y direction within the vertical plane YZ by the support 22 and the column 18. And operate in the Z direction. The rotation center C2 is the rotation center of the main stockers 80a and 80b, and the delivery position of the tool T between the holding arm 84 and the machining spindle 36 and the delivery position of the tool T between the holding arm 84 and the tool delivery mechanism 140 are vertical. It is set in the plane YZ. The operation center C3 is the center of the width of the hand 146 and the engagement member 144, and the hand 146 and the engagement member 144 operate in the Y direction and the Z direction, respectively, within the vertical plane YZ. The center position C4 is the width center of the notches 134a and 134b, and the delivery position between the holding arm 118 and the tool delivery mechanism 140 via the notches 134a and 134b is set in the vertical plane YZ.

  As described above, in the machine tool system 10, there is substantially no element that operates in the width direction (X direction) of the apparatus, and the axis center, operation center, and operation direction of each element are set in the same vertical plane YZ. Therefore, it is possible to effectively suppress rolling, vibration and noise in the X direction. Therefore, for example, even when the tool T is transferred between the sub stocker 100 and the main stocker 80a during machining of the workpiece W by the machining spindle 36, there is no influence of the rolling or the like on the machining spindle 36. Therefore, highly accurate processing can be performed. In the machine tool system 10, the operation in the X direction is complemented by the turning of the machining spindle 36 by the turning arm 32, thereby making it possible to perform appropriate machining on a desired part of the workpiece W.

  Furthermore, in this embodiment, the sub stocker 100 is installed in the rear upper part so as to straddle the main stockers 80a and 80b. For this reason, for example, compared with the case where the sub stocker 100 is installed on the side of the main stockers 80a, 80b, etc., an extremely large number of tools are stored without impairing the narrow installation space in the X direction of the machine tool system 10. be able to. As described above, since all the operations related to the delivery of the tool T are basically performed in the vertical plane YZ, even the machine tool system 10 having the sub-stocker 100 on the upper part and having a slightly vertical configuration. It is possible to effectively prevent rolling during tool delivery. In other words, in the machine tool system 10 in which the sub stocker 100 is disposed above, the center of gravity tends to be slightly higher. However, the operations of the elements are aggregated in the same vertical plane YZ as shown in FIG. Therefore, it is possible to effectively suppress rolling or the like and sufficiently ensure the stability of the entire system.

  In the machine tool system 10, when the tool T is transferred between the main stocker 80 a (80 b) and the sub stocker 100 constituting the tool stocker 11, the opening of the grip 85 of the holding arm 84 and the opening of the fork 116 of the holding arm 118 are communicated. Are arranged so as to face each other in the vertical plane YZ across the notch 134a (134b), and a tool delivery mechanism 140 is provided corresponding to the notch 134a (134b). In the sub stocker 100, the tool T is held in a tool pot 126 which is a moving container, while in the main stocker 80a (80b), the tool T is directly held without the tool pot 126 interposed.

  Therefore, the tool T can be delivered between the main stocker 80a (80b) and the sub stocker 100 only by moving the tool pot 126 vertically in the vertical direction by the tool delivery mechanism 140 (for example, FIG. 18). To FIG. 20). For example, the pulling-out operation of the tool pot 126 (tool T) from the holding arm 118 of the sub stocker 100 becomes the mounting (insertion) operation of the tool T to the holding arm 84 of the main stocker 80a (80b) as it is. The tool T can be transferred by a linear action. For this reason, compared with the operation | movement which consists of three actions of extraction, rotation, and insertion like the said conventional structure, delivery of a tool can be performed rapidly and reliably by simple operation | movement.

  That is, in the tool stocker 11, by providing the notch 134a in the rail 114 of the sub stocker 100, the tool T moved and held along the rail 114 by the sub stocker 100 is moved from the rail 114 by a turning operation or the like. And can be directly transferred between the main stockers 80a and 80b. Accordingly, since no turning motion is involved when the tool T is delivered, it is possible to prevent a delivery failure such as a positional shift or dropout, and the tool T can be delivered stably.

  More specifically, the tool delivery mechanism 140 that delivers the tool T moves the tool pot 126 in the delivery direction (Y direction) of the tool T, and is arranged in the notches 134a and 134b to displace the rail 114. It has a hand 146 that functions as a moving member to be complemented, and an engaging member 144 that functions as a moving member that moves the tool pot 126 along the attachment / detachment direction (Z direction) of the tool T with respect to the tool pot 126. The tool T can be transferred only with a simple operation. As a result, the tool stocker 11 does not require a mechanism for performing a turning operation when the tool T is delivered, and thus the mechanism can be simplified as much as possible, and as a result, reliability and durability can be improved. it can.

  In this case, for example, a predetermined tool T used for the workpiece W being processed is held in the main stockers 80a and 80b, and a tool T not used for the workpiece W being processed is held in the sub stocker 100. Thus, the main stockers 80a and 80b can be configured to the minimum necessary size. That is, since the number of tools held in the main stockers 80a and 80b can be set to a necessary and sufficient value, the tool selection speed in the main stockers 80a and 80b can be increased. The time required for automatic tool change between the two can be shortened.

  In addition, the tool can be automatically and quickly exchanged between the main stockers 80a and 80b and the sub stocker 100 via the tool delivery mechanism 140. For this reason, for example, even during processing of a workpiece of a model that is currently in lot production, a plurality of tools scheduled to be used for a workpiece of a model that is scheduled to be produced next time are transferred between the main stocker 80a, 80b and the sub stocker 100. Can be replaced sequentially.

  As described above, the present invention is not limited to the above-described embodiments, and various configurations can be adopted without departing from the gist of the present invention.

  For example, there may be one main stocker that delivers the sub stocker 100 and the tool T, and of course, there may be one machine tool. Further, for example, the number of main stockers that deliver the tool T may be three or more. Naturally, it may be one in which three or more machine tools are arranged, for example, a transfer machine.

1 is a partially cutaway perspective view of a machine tool system equipped with a tool stocker according to an embodiment of the present invention. It is a front view of the machine tool system shown in FIG. It is a side view of the machine tool system shown in FIG. It is a cross-sectional side view of the support body and the process spindle which comprise the machine tool system shown in FIG. In the machine tool system shown in FIG. 1, it is a partial cross-sectional perspective view which shows the state which performs tool replacement by the main stocker. FIG. 6 is an enlarged side view of a column, a main stocker, and a peripheral portion thereof when the tool change shown in FIG. 5 is performed. It is a perspective view of a tool pot. It is the front view which expanded the tool stocker concerning this embodiment. It is a perspective view of the tool delivery mechanism shown in FIG. 10A is a side view of the tool delivery mechanism shown in FIG. 9, and FIG. 10B is a side view showing a state where the hand of the tool delivery mechanism is lowered from the state shown in FIG. 10A. 11A is a plan view schematically showing the vicinity of the notch of the tool stocker, FIG. 11B is a front view of FIG. 11A, and FIG. 11C is a side view of FIG. 11A. 12A is a plan view schematically showing the vicinity of a notch in the tool stocker, FIG. 12B is a front view of FIG. 12A, and FIG. 12C is a side view of FIG. 12A. 13A is a plan view schematically showing the vicinity of the notch of the tool stocker, FIG. 13B is a front view of FIG. 13A, and FIG. 13C is a side view of FIG. 13A. 14A is a plan view schematically showing the vicinity of the notch of the tool stocker, FIG. 14B is a front view of FIG. 14A, and FIG. 14C is a side view of FIG. 14A. 15A is a plan view schematically showing the vicinity of a notch in the tool stocker, FIG. 15B is a front view of FIG. 15A, and FIG. 15C is a side view of FIG. 15A. 16A is a plan view schematically showing the vicinity of the notch of the tool stocker, FIG. 16B is a front view of FIG. 16A, and FIG. 16C is a side view of FIG. 16A. 17A is a plan view schematically showing the vicinity of a notch in the tool stocker, FIG. 17B is a front view of FIG. 17A, and FIG. 17C is a side view of FIG. 17A. 18A is a plan view schematically showing the vicinity of a notch in the tool stocker, FIG. 18B is a front view of FIG. 18A, and FIG. 18C is a side view of FIG. 18A. 19A is a plan view schematically showing the vicinity of the notch of the tool stocker, FIG. 19B is a front view of FIG. 19A, and FIG. 19C is a side view of FIG. 19A. 20A is a plan view schematically showing the vicinity of the notch of the tool stocker, FIG. 20B is a front view of FIG. 20A, and FIG. 20C is a side view of FIG. 20A. 21A is a plan view schematically showing the vicinity of a notch in the tool stocker, FIG. 21B is a front view of FIG. 21A, and FIG. 21C is a side view of FIG. 21A. It is explanatory drawing which shows typically the arrangement | positioning relationship of the axis center of each element which comprises the machine tool system which concerns on this embodiment, and an operation center.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Machine tool system 11 ... Tool stocker 12 ... Controller 36 ... Processing spindle 80a, 80b ... Main stocker 84, 118 ... Holding arm 85 ... Grip 100 ... Sub stocker 116 ... Fork 120 ... Motor 126 ... Tool pot 130, 132 ... Groove part 134a 134b ... Notch 140 ... Tool delivery mechanism 142 ... Claw 144 ... Engagement member 146 ... Hand 150, 172 ... Cylinder mechanism C1 ... Center of rotation C2 ... Center of rotation C3 ... Center of operation C4 ... Center position

Claims (5)

A machining spindle for machining a workpiece, to which a tool for machining the workpiece is attached and detached, and machining the desired part of the workpiece via a swivel arm,
A first tool stocker for holding a plurality of detachable tools with respect to the machining spindle, and for indexing the tools by a rotating operation;
A second tool stocker for holding a plurality of the tools so that they can be delivered to and from the first tool stocker;
A tool delivery mechanism for delivering the tool between the first tool stocker and the second tool stocker;
With
The turning center of the machining spindle, the rotation center of the first tool stocker, and the tool delivery position of the tool delivery mechanism in the second tool stocker are substantially in the same vertical plane. A machine tool system. The machine tool system according to claim 1,
Furthermore, the delivery position with the said tool delivery mechanism in the said 1st tool stocker exists in the said same vertical plane, The machine tool system characterized by the above-mentioned. The machine tool system according to claim 1 or 2,
The machine tool system, wherein a delivery position with the tool delivery mechanism in the second tool stocker is above a delivery position with the tool delivery mechanism in the first tool stocker. The machine tool system according to any one of claims 1 to 3,
A machine tool system, wherein a rotational drive source for rotationally driving the tool mounted on the machining spindle is disposed coaxially with a pivot center of the pivot arm. In the machine tool system according to any one of claims 1 to 4,
The first tool stocker is provided with a plurality of first holders that extend radially from the rotation center and hold the tool.
The second tool stocker is provided with a plurality of second holders for holding the tool,
When delivering the tool, the first retainer and the second retainer have an orientation of an opening for retaining the tool of the first retainer and an orientation of an opening for retaining the tool of the second retainer. Are arranged so as to face each other in the same vertical plane.

Images