WO2016203570A1

WO2016203570A1 - Tool magazine

Info

Publication number: WO2016203570A1
Application number: PCT/JP2015/067446
Authority: WO
Inventors: 浅川和哉; 森雅彦
Original assignee: 富士機械製造株式会社
Priority date: 2015-06-17
Filing date: 2015-06-17
Publication date: 2016-12-22
Also published as: JP6646664B2; JPWO2016203570A1

Abstract

A compact tool magazine (18) capable of detecting breakage inside a magazine main body (26) and having: tool displacement devices (33-36) that line up a plurality of tools (T) that are held in a standing posture, along an elliptical path, and cause same to follow said path; and breakage detection members (61, 72) for detecting the state of the tool tips, using as a detection position (601) the end section in the longitudinal direction of the ellipse at which the travel direction reverses during the orbital travel of the tools (T).

Description

Tool magazine

The present invention relates to a tool magazine capable of detecting tool breakage.

Machine tools such as machining centers are provided with a breakage detecting device for detecting breakage of a tool because a machining dimension may be distorted when breakage such as blade spilling occurs in the tool. Patent Document 1 below discloses a breakage detection device that detects breakage of a tool without mounting a tool on a spindle head. In general, tool breakage detection includes a breakage detection member such as a touch sensor installed at a predetermined position in the machine, and the state of the cutting edge is detected by bringing a tool attached to the spindle head into contact with the touch sensor. On the other hand, the breakage detection structure of the same document is configured such that breakage can be detected with respect to a tool stored in the tool magazine. In the tool magazine, an endless roller chain is rotatably installed in a box-shaped magazine body, and tools are stored in a plurality of storage pockets fixed to the roller chain. An optical sensor is installed on the path of the tool that moves around by the rotation of the roller chain, and the breakage of the tool is detected in the tool magazine.

JP 62-44337 A

In the conventional breakage detection device, a pair of support plates are arranged so as to sandwich the roller chain, and an optical sensor is attached to each support plate as a breakage detection member. That is, the support plate is arranged on the inner side and the outer side of the annular roller chain. Since such a breakage detection device must secure a space for mounting the optical sensor inside the roller chain, the roller chain is attached in a ring shape close to a circle, and the entire tool magazine becomes large. . And the machining center etc. which mount such a tool magazine will also become large sized, and a tool magazine will prevent miniaturization of a machine tool.

Therefore, an object of the present invention is to provide a small tool magazine capable of detecting breakage inside the magazine body in order to solve such a problem.

The tool magazine according to one aspect of the present invention includes a tool displacement device that moves a plurality of tools held in an upright posture in a line along an oval path, and a length in which the moving direction of the tool is reversed. A breakage detecting member for detecting the state of the tool tip with a circular longitudinal end as a detection position.

According to the tool magazine of the present invention, a predetermined tool is indexed by rotating a plurality of tools along an elliptical path, and an elliptical longitudinal end portion where the moving direction of the tool is reversed is provided. Breakage detection is performed as a detection position. Therefore, it is possible to reduce the size of the tool magazine in the width direction by making the moving path oval while accommodating many tools, and moving by making the longitudinal end of the oval the detection position A breakage detection member can be arranged outside the course, and does not hinder downsizing of the tool magazine.

It is the perspective view which showed the processing machine line comprised by the some machine tool. It is the perspective view which showed the processing module which comprises a machining center. It is the perspective view which showed the processing module which comprises a machining center. It is the perspective view which showed the tool magazine in the state where the opening-and-closing door was closed from the upper part. It is the perspective view which showed the tool magazine in the state where the opening-and-closing door was opened from the upper part. It is the perspective view which showed the tool magazine in the state where the opening-and-closing door was closed from the lower part. It is the perspective view which showed the tool magazine in the state where the opening-and-closing door was opened from the lower part. It is the perspective view which showed the opening part of the magazine main body provided with the breakage detection member. It is the top view which showed notionally the relationship between the position of the tool in a tool magazine, and a breakage detection position. It is the flowchart figure which showed an example of the processing process accompanied by breakage detection.

Next, an embodiment of a tool magazine according to the present invention will be described below with reference to the drawings. The tool magazine of the present embodiment will be described by taking as an example one incorporated in a machining center. FIG. 1 is a perspective view showing a processing machine line including a plurality of machine tools 5 including a machining center. In this processing machine line 1, a workpiece input module 6 is installed on the left side of the drawing, which is the workpiece carry-in side, and seven machine tools 5 are placed on the base as a base, and the workpiece stock module 7 is on the right side of the drawing, which is the workpiece discharge side. Is installed. The machine tool 5, the workpiece input module 6 and the workpiece stock module 7 are all uniform in appearance, and have the same outer shape and dimensions.

The processing machine line 1 is provided with a workpiece transfer device for delivering workpieces between the machine tools 5 arranged in the width direction, the workpiece input module 6 and the workpiece stock module 7, and performs a series of processing on the workpiece. Is called. The machine tool 5 is entirely covered with an exterior cover 3, and there is a front cover 4 on the front side of the drawing, and the exterior cover 3 and the front cover 4 are integrated. Various processing modules that perform processing such as cutting and drilling on the workpiece are mounted inside the exterior cover 3, and a processing chamber that is closed for each machine tool 5 is configured. On the other hand, the front cover 4 constitutes one conveyance space in the width direction of the processing machine line 1, and a conveyance device for conveying a workpiece to the machining chamber of each machine tool 5 is installed therein. .

The seven machine tools 5 constituting the processing machine line 1 are lathes, machining centers and the like, and FIGS. 2 and 3 are perspective views showing the processing module 10 for the machining center 5x. In the machining center 5x, the machining module 10 is covered with a machine body cover, and a machining chamber is formed inside the machining module 5x. The processing module 10 is movable on the base 8 in the front-rear direction, and is assembled on a movable bed 11 having wheels. In the present embodiment, the machine body longitudinal direction of the machining center 5x (processing module 10) is the Y-axis direction, the machine body width direction is the X-axis direction, and the machine body vertical direction is the Z-axis direction.

The machining module 10 is provided with a spindle head 12 for holding a tool at the front. The spindle head 12 includes a spindle chuck 13 to which a tool such as a drill or an end mill is detachably attached, and a spindle motor 14 that rotates the tool held by the spindle chuck 13 is provided. The rotation axis of the spindle head 12 that rotates the tool is the vertical direction (Z-axis direction). Under the spindle head 12, a work table 16 fixed to the rotating body 15 protrudes to the front side of the machine body.

The work table 16 is attached to a gantry 17 on the movable bed 11, and the spindle head 12 is movably attached in three axis directions by a machining drive unit configured on the gantry 17. A tool magazine 18 storing a plurality of tools is provided at a height between the gantry 17 and the machining drive unit, that is, between the work table 16 and the spindle head 12. Further, the machining module 10 has a control for driving and controlling the spindle motor 14 and the driving unit of the tool magazine 18 in addition to the spindle motor 14 and the driving motor of the rotating body 15 in addition to the movable bed 11. A device 19 is mounted.

The machining drive unit of the spindle head 12 moves the tool held by the spindle head 12 in the Z-axis direction, the X-axis drive mechanism for moving in the X-axis direction, and the Y-axis direction. A Y-axis drive mechanism is provided. That is, the machining module 10 is designed so that the drive mechanisms in the three axial directions are arranged in the longitudinal direction of the machine body and the width dimension of the machine body is reduced. Specifically, the Y-axis drive mechanism is such that the Y-axis slider 21 is mounted on the magazine body 26 so as to be movable in the Y-axis direction. The X-axis drive mechanism is such that the X-axis slider 22 is in the X-axis direction with respect to the Y-axis slider 21. It is mounted so that it can move freely. Further, in the Z-axis drive mechanism, a Z-axis slider 23 is mounted so as to be movable in the Z-axis direction with respect to the X-axis slider, and the spindle head 12 is mounted on the Z-axis slider 23.

Each of the Y-axis slider 21, the X-axis slider 22, and the Z-axis slider 23 is slidably fitted with a guide rail and a guide block, and is slidably assembled in each direction. In each drive mechanism, a nut fixed to each slider is screwed onto a screw shaft connected to a rotation shaft of a servo motor. Accordingly, the rotation of each servo motor is converted into a linear motion, and the Y-axis slider 21, the X-axis slider 22, and the Z-axis slider 23 move by a predetermined amount in each direction. Thereby, the position control with respect to the workpiece | work on the work table 16 is performed with respect to the tool hold | maintained at the spindle head 12. FIG.

Incidentally, the processing machine line 1 shown in FIG. 1 has a very compact design as a whole, in which a plurality of machine tools 5 including the machining center 5x are arranged close to each other in the width direction. In order to achieve the compactness of the machining center 5x as well, the Y-axis slider 21, the X-axis slider 22, and the Z-axis slider 23 are arranged so as to overlap in the Y-axis direction, and the width direction dimension that is the X-axis direction is small. It has become. And the tool magazine 18 arranged under such a processing drive part also has a compact design.

The tool magazine 18 is housed in a box-shaped magazine body 26 in a removable state, and the magazine body 26 is provided with a pair of opening / closing doors 28 at the opening on the spindle chuck 13 side. Normally, the open / close door 28 is closed as shown in FIG. 2 so that coolant, cutting waste, and the like scattered by machining of the workpiece do not adhere to the tool in the magazine body 26. When the tool is changed, the opening / closing door 28 is opened as shown in FIG. 3, and the tool magazine 18 is configured to be sent out in conjunction with opening / closing of the opening / closing door 28. That is, the front end portion of the tool magazine 18 protrudes from the opening so that the tool can be changed outside the magazine body 26 by the spindle head 12.

Here, FIGS. 4 to 7 are perspective views showing the relationship between the door 28 and the tool magazine 18. 4 and 5 are perspective views of the tool magazine 18 as viewed from above. FIG. 4 shows a state in which the tool magazine 18 is housed in the magazine body 26. FIG. A state in which the front end protrudes is shown. On the other hand, FIGS. 6 and 7 are perspective views of the tool magazine 18 as viewed from below, and show states corresponding to FIGS. 4 and 5, respectively. Note that various types of tools T are stored in the tool magazine 18, but in the drawings, specific shapes are omitted and all are expressed in a cylindrical shape. That is, it is simply a diagram in which the arrangement of a plurality of tools T can be understood.

The tool magazine 18 is provided with a plurality of tool holders 32 on which the tool T can be attached and detached. The tool holder 32 is configured such that the neck portion of the tool T is sandwiched between a pair of gripping claws, and the tool T stored in the tool magazine 18 is suspended in such a manner that its rotation axis is directed in the vertical direction. Retained. In the tool magazine 18, an endless roller chain 34 is stretched around a pair of sprockets 33. Therefore, the roller chain 34 has an oval shape, and a plurality of tool holders 32 are fixed to the roller chain 34 at a constant interval. The plurality of tools T are arranged close to each other and are arranged in order in the oval circumferential direction.

In the tool magazine 18, a tool displacement motor 35 is connected to the sprocket 33 on the door 28 side of the pair of sprockets 33. That is, the tool displacing motor 35 is horizontally placed so that its rotation axis faces the Y-axis direction, the rotation axis and the rotation axis of the sprocket 33 are orthogonal, and the bevel gear fixed to each rotation axis. 36 is engaged. Therefore, the rotation of the sprocket 33 is transmitted from the sprocket 33 to the roller chain 34 by the driving of the tool displacement motor 35, and the plurality of tools T travel around the elliptical path according to the roller chain 34.

The tool magazine 18 is configured such that the tool displacement device including the above-described tool displacement motor 35, roller chain 34, sprocket 33, tool holder 32, and the like is assembled to the movable table 38 and can move in the magazine body 26 in the front-rear direction. Has been. The movable table 38 is an oval shape corresponding to the circular movement of the tool T, and has a tray shape in which low side walls are formed on the inner periphery and outer periphery thereof, so that coolant and cutting waste falling from the tool T can be received. ing. A tool displacement motor 35 and a sprocket 33 are arranged inside the periphery of the movable table 38 having such a shape.

A guide block 41 is fixed to the lower surface of the movable table 38, and a guide rail 42 is laid on the inner bottom surface of the magazine body 26. The guide block 41 is slidably fitted to the guide rail 42, and the movable table 38 is configured to be movable in the front-rear direction (Y-axis direction). A nut 43 constituting a ball screw is fixed to the movable table 38, and a screw shaft 45 connected to the rotation shaft of the moving motor 46 is screwed to the nut 43. Therefore, the moving device of the tool magazine 18 is such that the moving motor 46 is fixed to the magazine body 26 side, and the moving motor 46 is driven to rotate the screw shaft 45, whereby the tool magazine 18 is moved via the nut 43. It is designed to move linearly, that is, move forward and backward.

Next, the open / close door 28 of the magazine body 26 is configured to open and close in conjunction with the forward and backward movement of the tool magazine 18. A pair of left and right open / close doors 28 is provided at the front opening of the magazine body 26 and is attached to the magazine body 26 by a hinge member 51 so as to be opened to the left and right. An opening / closing mechanism is assembled to the pair of left and right doors 28 with a symmetrical configuration. In the open / close mechanism, a door side bracket 52 fixed to the open / close door 28 and a drive side bracket 53 attached to the movable table 38 side are connected via a link bar 55 that is pin-coupled to each other.

Furthermore, the tool magazine 18 is provided with a breakage detection member for detecting breakage of the tool such as blade spillage. Here, FIG. 8 is a perspective view showing an opening of the magazine body 26 provided with the breakage detection member. In the present embodiment, as shown in the figure, the breakage detection of the tool is configured to be performed inside the magazine body 26, particularly in the vicinity of the opening 260 provided with the opening / closing door 28. FIG. 9 is a plan view conceptually showing the relationship between the position of the tool T and the breakage detection position in the tool magazine 18.

The plurality of tools T held by the tool holder 32 are arranged so as to move in the circumferential direction in an oval path in a row as shown in the figure. The tool magazine 18 is constituted by a linear portion on both the left and right sides and curved portions at both ends of the linear portion by an annular roller chain 34. For example, when the roller chain 34 rotates counterclockwise, the right straight portion moves to the opening 260 of the magazine main body 26 that is above the drawing, and the left straight portion is behind the magazine main body 26 that is below the drawing. Will move to. Then, the moving direction of the tool T is reversed when viewed in the Y-axis direction at the center position of the curved portion, that is, the position of the end of the oval in the longitudinal direction. The positions where the moving direction is reversed in this way are set as the reversed

positions

601 and 602. In addition, the oval of the dashed-dotted line shown in FIG. 9 shows the movement locus | trajectory of the rotating shaft of the tool T, and the inversion positions 601 and 602 show the inversion positions of the rotating shaft.

In the tool magazine 18, the position where the rotation axis overlaps the reverse position 601 is the foremost position of the tool T. Therefore, as shown in FIG. 5, when the tool magazine 18 is sent forward, the tool Tx to be exchanged at this position jumps out from the opening 260. Then, the gripping with the spindle head 12 is performed at the protruding position. Therefore, a position where the rotation axis of the tool T overlaps the reversal position 601 in the movement path in the tool magazine 18 along which the tool T moves is referred to as a tool T replacement preparation position 610. Further, as shown in FIG. 5, the tool holder 32 and the tool Tx at the replacement preparation position 610 are protruded, that is, the position outside the magazine main body 26 where the tool chuck T is replaced by the spindle chuck 13 is the tool replacement position. It is called 620.

In the present embodiment, breakage detection is performed on the tool T disposed at the replacement preparation position 610 in the tool holder 18 in the magazine body 26. Therefore, a breakage detection member is provided in the magazine body 26 in the vicinity of the opening 260. A transmissive fiber sensor is used as the breakage detection member, and a light projector 61 that projects light 60 from a built-in light source and a light receiver 62 that includes a light receiving element that receives the light 60 and converts it into an electrical signal are installed. .

The light projector 61 and the light receiver 62 are attached to the left and right sides of the opening 260 and are arranged opposite to each other in the X-axis direction. In particular, as shown in FIG. 9, in a plan view, the projector 61 and the light receiver 62 are installed so that the projected light 60 passes over the inversion position 601. This is because the cutting edge of the tool Tx does not overlap with another tool T when viewed in the X-axis direction at the reversal position 601. The arrangement of the light projector 61 and the light receiver 62 is positioned outside the annular roller chain 34 so that the structure of the tool magazine 18 is not affected.

The light 60 between the projector 61 and the light receiver 62 passes through the inversion position 601 and is projected in parallel with the X axis. However, since the light 60 projected horizontally passes only a certain height, it cannot correspond to the heights of different cutting edges of a plurality of tools T. Therefore, in this embodiment, a plurality of sets of transmission type fiber sensors (light projector 61 and light receiver 62) are provided so as to correspond to the cutting edge positions of the tools.

As shown in FIG. 8, a pair of adjustment plates 65 are fixed to the opening 260 of the magazine body 26. A lead groove 651 is formed in the adjustment plate 65 in the Z-axis direction, and a scale is displayed along the lead groove 651. A plurality of sets of light projectors 61 and light receivers 62 are attached so that the adjustment plate 65 can be moved up and down according to the lead groove 651 and positioned by bolting at a predetermined height. In this embodiment, three sets of light projectors 61 and light receivers 62 are attached, and alignment is performed by scales, and breakage detection corresponding to tools having different blade edge positions is possible.

Subsequently, workpiece machining by the machining center 5x of the present embodiment will be described. In the workpiece machining, the workpiece clamped on the workpiece table 16 is subjected to cutting with a tool such as a drill or an end mill attached to the spindle head 12. Rotation is given to the tool of the spindle head 12 by driving the spindle motor 14, and the rotating tool moves relative to the workpiece by movement control in the three axis directions with respect to the machining drive unit, and positioning for machining is performed. . On the other hand, the tool that directly performs machining on the workpiece is appropriately replaced according to the machining content of the workpiece.

In the tool change, first, indexing is performed in the magazine body 26. That is, since the tool T is exchanged with the spindle head 12, an empty holder 32 that does not hold the tool T is sent to the replacement preparation position 610 of the tool magazine 18. At this time, the roller chain 34 is rotated through the sprocket 33 by the drive control of the tool displacement motor 35, and the empty tool holder 32 is moved to the replacement preparation position 610. Then, the movable table 38 slides by the drive control of the moving motor 46 so that the tool magazine 18 moves forward, and at the same time, the open / close door 28 interlocked with the movement of the movable table 38 is opened.

The empty tool holder 32 pops out from the opening 260 where the open / close door 28 is opened, and the tool T is transferred from the spindle head 12 to the tool holder 32 at the tool change position 620. Thereafter, in the tool magazine 18, the tool Tx to be replaced moves around by the drive control of the tool displacement motor 35, and is indexed to the replacement preparation position 610 (tool replacement position 620). Then, the tool Tx is transferred to the spindle head 12 side by re-holding with the spindle chuck 13, and the tool magazine 18 is retracted by the drive control of the moving motor 46, and at the same time, the open / close door 28 is closed.

By the way, although the breakage of the tool is detected as necessary in the machining center 5x, in this embodiment, the tool magazine 18 is stored in the magazine body 26. At that time, the tool T to be detected is arranged at the replacement preparation position 610, and the projector 61 and the light receiver 62 having the corresponding heights from the plurality of sets are used. In the breakage detection, the light 60 is projected from the light source of the projector 61, and the light receiver 62 converts the received light 60 into an electrical signal, and the detection signal is processed to detect the state of the blade edge. When the cutting edge of the tool blocks the light 60, the amount of light incident on the light receiver changes depending on the shape of the cutting edge. Therefore, the broken state is detected by checking the change.

In the present embodiment, such a break detection process can be performed in parallel with the machining process using other tools. FIG. 10 is a flowchart showing an example of a processing process with breakage detection. Here, a case where tapping is performed on a workpiece will be described. Therefore, first, in the tapping process, as a first process, a drill hole is drilled in the work, so that the tool T1 (drill) is held by the spindle chuck 13 from the tool magazine 18 (S101). Then, the drilling of the workpiece is performed by the rotating tool T1 by the drive control on the spindle head 12 (S102).

Next, female thread processing is performed on the pilot hole as the second processing. For example, if the cutting edge of the tool T1 is broken during the pilot hole processing, the workpiece becomes a defective product. turn into. Therefore, after the first machining of the tool T1, breakage detection is performed for the tool T1. However, in the present embodiment, the breakage detection process is not performed alone, but if there is another process other than the tapping process, it is performed in parallel with the other process. Therefore, after completion of the first machining with the tool T1, whether or not there is another machining is confirmed (S103). If there is another machining (for example, milling) (S103: YES), it is necessary for the machining. The tool T2 is replaced with a new one (S104). That is, the tool T2 is held on the spindle chuck 13, and the tool T1 is returned to the tool magazine 18.

Next, it is confirmed whether or not breakage detection is necessary for the tool T1 (S105). Since a drill with a pilot hole drilled as in this example requires breakage detection of the cutting edge (S105: YES), light 60 is projected between the projector 61 and the light receiver 62, and the above-described breakage detection is performed. Performed (S107). Further, such breakage detection of the tool T1 is performed in the magazine main body 26, but at this time, another processing is performed outside the magazine main body 26 by the tool T2 attached to the spindle head 12 (S107).

After the breakage detection (S107) of the tool T1 is performed, the breakage is confirmed (S108). If the breakage of the tool T1 cannot be confirmed (S108: NO), the tool T3 (tap) necessary for the second machining is performed. Is exchanged (S109). However, when a breakage is confirmed for the tool T1 (S108: YES), the operator is notified of the occurrence of breakage by lighting a signal tower provided in the machining center 5x without moving to the second machining of the tool T3. Notification is made (S110). On the other hand, unlike tapping, when breakage detection of the tool used for the first machining is not necessary (S105: NO), only machining with the tool T2 is performed (S106). Then, after the machining with the tool T2 is completed, the tool T3 (tap) necessary for the second machining is replaced (S109), and the tapping with the tool T3 is performed (S116).

On the other hand, when the machining by the machining center 5x1 is only the tap machining (S103: NO), after the pilot hole machining (first machining) with the tool T1 is finished, the female screw machining (second machining) is directly performed on the pilot hole. Will be done. That is, the tool T3 necessary for the machining is exchanged (S111), the tool T3 is held on the spindle chuck 13, and the tool T1 is returned to the tool magazine 18. In this case as well, whether or not breakage detection is necessary for the tool T1 is confirmed (S112). If necessary (S112: YES), the light 60 is transmitted between the projector 61 and the light receiver 62. The breakage is detected as described above (S113).

Further, such breakage detection of the tool T1 is performed in the magazine main body 26, but outside the magazine main body 26, preparation for the second processing by the tool T3 (tap) attached to the spindle head 12 is simultaneously performed (S113). ). In this case, since the result of the breakage detection of the tool T1 affects the processing of the tool T3, the tool T3 moves immediately before processing the workpiece, and preparation for processing is made to stand by on the spot. After the breakage detection of the tool T1 is performed (S113), the breakage is confirmed (S114). If the breakage of the tool T1 cannot be confirmed (S114: NO), tapping with the tool T3 is performed (S116). . However, when a breakage is confirmed for the tool T1 (S114: YES), the operator is notified of the occurrence of breakage by turning on the signal tower provided in the machining center 5x without moving to the second machining of the tool T3. Notification is made (S115). On the other hand, when the tool T1 does not require breakage detection (S112: NO), machining with the tool T3 is performed (S116).

According to the present embodiment described above, the endless roller chain 34 is used to make the moving path of the tool oval, and to detect the breakage of the cutting edge at the reversing position 601 where the moving direction of the tool is reversed. Therefore, the tool magazine 18 can suppress the dimension of the width direction (X-axis direction), although many tools can be accommodated by making the moving path of a tool oval. Since the projector 61 and the light receiver 62 are arranged outside the roller chain 34 to detect breakage of the tool, the tool magazine 18 is not hindered in size reduction. Further, the breakage detection using the projector 61 and the light receiver 62 may be performed at any of the two

reversal positions

601 and 602, but is performed at the opening 260 side of the magazine body 26 which is also the replacement preparation position 610. As a result, the time for breakage detection performed on a tool that requires replacement can be reduced.

In addition, since the tool magazine 18 is provided with a plurality of sets of light projectors 61 and light receivers 62 having different detection heights, the tool magazine 18 can accommodate a plurality of different types of stored tools. In addition, adjustment can be performed by simple handling in which the projector 61 and the light receiver 62 are moved up and down along the lead groove 651 with respect to the adjustment plate 65 with the scale and bolted at a predetermined position. And since it is provided in the opening part 260 side of the magazine main body 26, handling is easy. Furthermore, since breakage can be detected inside the magazine body 26, breakage can be detected simultaneously while machining with another tool.

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to these, A various change is possible in the range which does not deviate from the meaning.
For example, in the embodiment, the breakage detection is performed on the tool located at the reversal position 601, but the breakage detection may be performed at the reversal position 602 in the same magazine body 26.
Moreover, although the case where the transmissive | pervious fiber sensor was used was demonstrated in the said embodiment, for example, a reflective laser sensor etc. may be used as a breakage detection member.
Moreover, although the said embodiment demonstrated the structure which performs height adjustment of the light projector 61 and the light receiver 62 manually, you may make it perform automatically using an actuator etc.

DESCRIPTION OF SYMBOLS 1 ... Machining machine line 5 ... Machine tool 5x ... Machining center 10 ... Processing module 12 ... Spindle head 18 ... Tool magazine 19 ... Control device 26 ... Magazine body 28 ... Opening / closing door 32 ... Tool holder 33 ... Sprocket 34 ... Roller chain 35 ... Tool Displacement motor 36 ... Bevel gear 38 ... Movable table 41 ... Guide block 42 ... Guide rail 43 ... Nut 45 ... Screw shaft 46 ... Moving motor 60 ... Magazine body 61 ... Light projector 62 ... Light receiver 65 ...

Adjustment plate

601, 602 ... Inversion position 610 ... change preparation position 610 ... tool change position

Claims

A tool displacement device for moving a plurality of tools held in a standing posture in a line along an elliptical path,
A tool magazine comprising: a breakage detecting member for detecting the state of the tool tip using an elliptical longitudinal end portion whose movement direction is reversed among the circular movements of the tool as a detection position.
2. The tool magazine according to claim 1, wherein the breakage detection member includes one or more pairs of light projectors and light receivers arranged with the detection position interposed therebetween.
3. The tool magazine according to claim 2, wherein the projector and the light receiver are attached to an attachment member capable of adjusting a position in a direction parallel to the standing direction of the tool.
The tool displacement device and the breakage detection member are inside a magazine main body provided with an open / close door, and the breakage detection member has the end portion close to the open / close door as a detection position among the oblong longitudinal ends. The tool magazine according to any one of claims 1 to 3, wherein the tool magazine is formed.