Machining device

Abstract

To provide a small-sized machining machine.SOLUTION: A machining device includes: a spindle 11 for gripping a tool 12 to perform machining; a tool magazine 70 for storing a plurality of tools 12; and moving means 200 for moving the spindle 11 in a spindle direction and a direction orthogonal to the spindle direction. In the tool magazine 70, a plurality of slits 71 are formed to be opened up to a top face in the spindle direction corresponding to the plurality of tools 12. The length of the slit 71 may be shorter than the whole length of the tool 12.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a processing device capable of processing a dental material as a processing object. [Background technology]

[0002] Dental processing devices that rotate a spindle to which a tool is attached to perform cutting or other processing on a workpiece have been conventionally known. In recent years, there has been a demand for installing such processing devices in dental clinics and other facilities. However, compared to conventional dental laboratories, installation space for devices for use in clinics is limited, so compact devices are required. To achieve this, a tool holder that holds a tool in a U-shape is known, which can reduce the tool change stroke, in order to reduce the size of the device (see, for example, Patent Document 1).

[0003] In the configuration of Patent Document 1, the tool gripper that grips the tool holder holding the tool is U-shaped, and is configured to press and hold the tool with an elastic member made of rubber. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-073121 Summary of the Invention [Problem to be solved by the invention]

[0005] Here, a tool such as that described in Patent Document 1 generally moves upward after gripping the tool and starts machining, so it needs to be large in the height direction. [Means for solving the problem]

[0006] In order to solve the above problems, the processing device of the present invention comprises a spindle for gripping and processing a tool, a tool magazine for storing a plurality of tools, and a moving means for moving the spindle in the spindle direction and in a direction perpendicular to the spindle direction, and is characterized in that the tool magazine has a plurality of slits formed therein that open to the top surface in the spindle direction to correspond to the plurality of tools. [Effects of the Invention]

[0007] According to the present invention, it is possible to reduce the size of the device. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is an external perspective view of a processing device according to an embodiment. [Figure 2] FIG. 1 is a perspective view of a processing device according to an embodiment. [Figure 3] FIG. 2 is a control block diagram of the processing device according to the embodiment. [Figure 4] 1A is a right perspective view of a holding member for holding a disk-shaped workpiece according to an embodiment of the present invention attached to a mounting plate, and FIG. 1B is a right perspective view of a holding member for holding a block-shaped workpiece according to an embodiment of the present invention attached to a mounting plate. [Figure 5] FIG. 10 is a perspective view of a tool holder according to another embodiment. [Figure 6] FIG. 10 is a perspective view of a tool holder according to another embodiment. [Figure 7] 10A and 10B are a perspective view and a cross-sectional view of a tool holder according to another embodiment; [Figure 8] FIG. 10 is a perspective view of a tool holder according to another embodiment. [Figure 9] FIG. 10 is a perspective view of a tool holder according to another embodiment. [Figure 10] FIG. 10 is a perspective view of a tool holder according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] The embodiment will be described with reference to Figures 1 to 10. First, the overall configuration of a processing apparatus 100 of the present embodiment will be described with reference to Figures 1 and 2.

[0010] [Processing equipment] FIG. 1 is an external perspective view of a processing apparatus 100 according to this embodiment. As shown in FIG. 1, the processing apparatus 100 houses the processing apparatus main body in an exterior cover 101 serving as a housing. That is, the exterior cover 101 houses a spindle, a tool magazine, and the like, which will be described later, and forms a machining space for tools. The exterior cover 101 is provided with an openable / closable door 102. When the openable door 102 is open, the interior of the housing, i.e., the machining space, can be accessed, allowing for the replacement of workpieces and manual tool replacement. Furthermore, the openable door 102 is closed during workpiece machining.

[0011] The door 102 is provided with a light-transmitting window 103. An opening / closing rod 104 is connected to a portion of the door 102 where the window 103 is not provided. A tray 105 is provided below the light-transmitting window 103. The opening and closing of the door 102 is detected by an opening / closing detection sensor 110 serving as an opening / closing detection means. The opening / closing detection sensor 110 has a magnet 111 provided on one of the door 102 and the main body 106 of the exterior cover 101, and a magnetic sensor 112 provided on the other of the door 102 and the main body 106 as a magnetic detection means capable of detecting the magnetism of the magnet 111 when the door 102 is closed. In this embodiment, the magnet 111 is provided on the door 102 side, and the magnetic sensor 112 is provided on the main body 106 side. Note that the opening / closing detection sensor that detects the opening and closing of the door 102 may have any configuration other than the above, as long as it is capable of detecting the opening and closing of the door 102. For example, electrical contacts may be provided on each of the opening / closing door 102 and the main body 106, and electricity may be applied when the opening / closing door 102 is closed, or a photointerrupter and flag may be used, and the photointerrupter may detect the flag when the opening / closing door 102 is closed.

[0012] 2, the processing apparatus 100 includes a frame 1 as a moving mechanism support member, a first moving mechanism 10, a second moving mechanism 20, and a third moving mechanism 30 each supported by the frame 1, a support mechanism 40 that supports a workpiece W as an object to be processed, a first rotation mechanism (rotating device) 50 and a second rotation mechanism 60 as rotation means capable of rotating the support mechanism 40, a tool magazine 70, and an electrical unit 80. The first moving mechanism 10, the second moving mechanism 20, and the third moving mechanism 30 form a moving device 200 as moving means that relatively moves a spindle 11 and a holding device 41 (described later) in three axial directions, i.e., X, Y, and Z.

[0013] The frame 1 is placed on a stand 2 having an internal cavity, and as shown in Fig. 2, is composed of a first frame portion 3 and a second frame portion 4 bent at a right angle from an end of the first frame portion 3. In this embodiment, the first frame portion 3 is arranged along the vertical direction, and the second frame portion 4 is arranged along the horizontal direction.

[0014] The first movement mechanism 10 is supported on the first surface 3a of the first frame portion 3 of the frame 1 via the second movement mechanism 20, and is capable of moving the spindle 11 in the Z-axis direction (vertical direction, first direction). A tool 12 is detachably attached to the spindle 11 via a tool holder. In other words, the spindle 11 is capable of gripping the tool 12. The spindle 11 is rotationally driven by a motor 13. The first movement mechanism 10 has a motor 14 and a guide shaft (not shown) arranged in the Z-axis direction, and is driven by the motor 14 to reciprocate (raise and lower) the spindle 11 along the guide shaft in the Z-axis direction. The spindle 11 is movably supported on the guide shaft via a Z-axis support member (not shown). The guide shaft and the Z-axis support member are covered by a cover 17.

[0015] The second movement mechanism 20 is supported on the first surface 3a of the first frame portion 3 of the frame 1, and is capable of moving the main shaft 11 together with the first movement mechanism 10 in the X-axis direction (horizontal direction, second direction) perpendicular to the Z-axis direction. The second movement mechanism 20 has a motor 21 and a guide shaft (not shown) arranged in the X-axis direction, and is driven by the motor 21 to move the first movement mechanism 10 back and forth in the X-axis direction along the guide shaft.

[0016] The third movement mechanism 30 is supported on the second surface 4a of the second frame portion 4 of the frame 1, and is capable of moving the support mechanism 40 in the Y-axis direction (horizontal direction, third direction) perpendicular to the Z-axis direction and the X-axis direction. The third movement mechanism 30 has a motor (not shown) and a guide shaft (not shown) arranged in the Y-axis direction, and is driven by the motor to move the support mechanism 40 back and forth in the Y-axis direction along the guide shaft.

[0017] The third movement mechanism 30 also includes a support plate 31 that supports the second rotation mechanism 60, and the support plate 31 moves back and forth in the Y-axis direction along a guide shaft. As shown in Fig. 2, the side of the gantry 2 facing the support mechanism 40 in the Y-axis direction is open. The third movement mechanism 30, as will be described in detail later, can move the support mechanism 40 in the Y-axis direction together with the second rotation mechanism 60 and the first rotation mechanism 50.

[0018] The support mechanism 40 supports a workpiece W, such as a dental prosthesis, as an object to be machined by the tool 12. The support mechanism 40 has a holding device 41 as a holding part that holds the workpiece W, and a support part 42 whose both ends are connected to the rotating part 51 of the first rotating mechanism 50 and that supports the workpiece W via the holding device 41.

[0019] The first rotation mechanism 50, which serves as a rotation device, can rotate the support mechanism 40 around an a-axis, which serves as a rotation axis perpendicular to the Z-axis direction. In this embodiment, the a-axis is parallel to the X-axis direction. The first rotation mechanism 50 includes a support frame 53 that rotatably supports the rotating units 51 and 52, and a motor that rotates the rotating unit 51. The support frame 53 is formed in a generally U-shape so as to surround the periphery of the support mechanism 40, and is composed of a first support unit 53a that supports the motor and the rotating unit 51 on one side (the driving side), a second support unit 53b that supports the rotating unit 52 on the other side (the driven side), and a connecting unit 53c that connects the first support unit 53a and the second support unit 53b.

[0020] The rotating part 51 supported by the first support part 53a and the rotating part 52 supported by the second support part 53b are arranged to face each other in the a-axis direction and to be rotatable around the a-axis as a rotation axis. Both ends of the support mechanism 40 in the a-axis direction are supported by the rotating parts on both sides. As a result, the first rotating mechanism 50 supports the support mechanism 40 rotatably around the a-axis (X-axis).

[0021] The first rotation mechanism 50 can rotate at least 180° and can turn over the workpiece W supported by the support mechanism 40. In this embodiment, the first rotation mechanism 50 can rotate the support mechanism 40 360° around the a-axis. Note that, because an extension of the a-axis passes through the center of the thickness direction of the workpiece W supported by the support mechanism 40, the distance from the a-axis, which is the central axis of rotation, to the front surface is the same as the distance from the a-axis to the back surface. Therefore, even if the workpiece W is turned over, the positional relationship between the center of the thickness direction of the workpiece W and the tool 12 does not change.

[0022] The second rotation mechanism 60 can rotate the support mechanism 40 around the b-axis, which is another rotation axis perpendicular to the Z-axis direction and the a-axis. In this embodiment, the b-axis is parallel to the Y-axis direction. Such a second rotation mechanism 60 has a rotation unit to which the support frame 53 of the first rotation mechanism 50 is attached, and a motor that rotates the rotation unit. The rotation unit is attached to a connecting portion 53c of the support frame 53, and is rotated by the motor to rotate the support frame 53 around the b-axis. Therefore, the second rotation mechanism 60 supports the support mechanism 40 together with the first rotation mechanism 50 so that the support mechanism 40 can rotate around the b-axis (Y-axis).

[0023] The tool magazine 70, which serves as a tool holder, can store multiple tools. It is disposed adjacent to the first rotation mechanism 50 and is supported by a support member, which is supported by the support plate portion 31 of the third movement mechanism 30. Therefore, the tool magazine 70 can be moved in the Y-axis direction together with the support mechanism 40 and other components by the third movement mechanism 30. However, even if the support mechanism 40 rotates around the a-axis, the tool magazine 70 does not rotate, and even if the support mechanism 40 rotates around the b-axis, the tool magazine 70 does not rotate. In other words, the tool magazine 70 is supported by the support plate portion 31 so as to maintain a predetermined posture even when the support mechanism 40 rotates around the a-axis and the b-axis. The tool magazine 70 can be moved in the Y-axis direction together with the support mechanism 40 and other components by the third movement mechanism 30.

[0024] The tool magazine 70 holds a variety of tools, each formed integrally with a tool holder 12a, and is arranged along the Y-axis direction. The tools attached to the spindle 11 are changeable. The tool holder 12a is a part held by the spindle 11 and may be formed integrally with the tool or may be formed separately. In this embodiment, the tool 12 is attached to the tool holder 12a with a chuck, and the chuck portion of the spindle 11 holds the tool via the tool holder 12a, forming a double chuck. However, the tool may also be attached directly to the spindle 11. In this embodiment, the spindle 11 is configured to automatically grip and release the tool, enabling automatic tool replacement.

[0025] To automatically replace a tool, the second movement mechanism 20 and the third movement mechanism 30 move an empty space in the tool magazine 70 that does not contain a tool below the spindle 11. In other words, the spindle 11 is moved relative to the tool magazine 70 on the XY plane. Then, the first movement mechanism 10 lowers the spindle 11 (moves it in the Z-axis direction), and an attachment / detachment device, such as a chuck, provided on the spindle 11 is operated to remove the tool 12 attached to the spindle 11 and place it in an empty space in the tool magazine 70. Next, the first movement mechanism 10 raises the spindle 11, and the second movement mechanism 20 and the third movement mechanism 30 move the position in the tool magazine 70 where the tool 12 to be replaced is located below the spindle 11. Then, the first movement mechanism 10 lowers the spindle 11 again, and the attachment / detachment device is operated to attach the tool 12 to the spindle 11. The tool 12 is, for example, a drill or an end mill.

[0026] In this embodiment, before and after storing or removing a tool, the tip of the tool 12 is brought into contact with a touch sensor 96, which serves as tip detection means capable of detecting the tip of the tool 12 held by the spindle 11, to confirm (measure) whether or not the tool 12 is held by the spindle 11. That is, in a tool replacement operation in which the tool held by the spindle 11 is replaced with one of a plurality of tools stored in the tool magazine 70, the touch sensor 96 can be used to confirm whether or not the tool 12 is held by the spindle 11. At this time, the center of the workpiece in the Z direction (a-axis) is aligned with the tip of the tool. The touch sensor 96 is provided adjacent to the tool magazine 70, as shown in FIG. 2 . In particular, in this embodiment, the touch sensor 96 is disposed in the tool magazine 70. The tool replacement operation will be described in detail later.

[0027] The electrical unit 80 is attached to the inside of the frame 1. That is, the electrical unit 80 is disposed on the opposite side of the first surface 3a of the first frame portion 3 and on the opposite side of the second surface 4a of the second frame portion 4. Such an electrical unit 80 controls the processing device 100, and includes a control board that controls the drive of the spindle and the motors of each axis, and a plurality of control units that calculate pulses to be output to the motors from signals from the rotary encoders of the corresponding motors and appropriately control the rotation of the corresponding motors.

[0028] Furthermore, the machining apparatus 100 of this embodiment is an NC machining apparatus that performs automatic machining under computer control. Specifically, machining data is created by a CAD / CAM system using an external terminal such as a personal computer, and the workpiece W is machined by numerical control based on this data. For this purpose, an external terminal such as a personal computer that issues commands to the machining apparatus 100 is connected to the machining apparatus 100. Note that the machining apparatus 100 itself may be provided with a computer equipped with a CPU and memory capable of numerical control. The control means described below may be provided in either the machining apparatus or a computer connected to the machining apparatus.

[0029] For example, when a dental prosthesis is produced using the processing device 100, data of the dental prosthesis measured by a three-dimensional measuring device is transferred to a CAD / CAM system, and processing data is created by the CAD / CAM system. Then, based on this processing data, the processing device 100 is controlled to cut the workpiece W with the tool 12, thereby producing the dental prosthesis.

[0030] Next, the control configuration within the electrical component unit 80 will be described with reference to Fig. 3. The electrical component unit 80 includes a CPU 85 as control means, an input / output port (I / O) 86i, motor control units 84x, 84y, and 84z, a spindle control unit 84c, an a-axis control unit 84a, and a b-axis control unit 84b. The CPU 85 performs various calculations using a memory 86m based on input data and signals, and sends instructions on rotation speed and position to the connected control units 84x, 84y, 84z, 84a, 84b, and 84c, which serve as servo amplifiers.

[0031] The I / O 86i is connected to an air blow unit 87, a dust collector 88, and a touch sensor 96 of the processing machine body. The air blow unit 87 blows air onto the tool 12 attached to the spindle 11 to cool the tool 12 and remove chips adhering to the tool 12. Foreign matter such as chips removed from the tool 12 and chips present in the first rotation mechanism 50 serving as a workpiece holding device after machining is sucked by a chip suction unit 89 provided in the workpiece holding device and collected by the dust collector 88. The touch sensor (tool length sensor) 96 serving as a tip detecting means is used to confirm whether the tool 12 is held by the spindle 11 during a tool changing operation, as described above, and also detects the length of the tool 12 and sends a signal to the CPU 85.

[0032] Motor control units 84x, 84y, and 84z provided in the CPU 85 drive the X, Y, and Z motors based on commands from the CPU 85. Encoders 21a, 32a, and 14a are provided on the motors 21, 32, and 14, respectively, as position detection means. The encoders 21a, 32a, and 14a detect, for example, the number of rotations, rotation angle, and rotation direction of the rotation shaft of the motors 21, 32, and 14. The encoders 21a, 32a, and 14 then detect the amount of actual movement of each stage x, y, and z (actual position, the relative position of the spindle 11 with respect to the holding device 41) caused by the driving of the motors 21, 32, and 14.

[0033] The main shaft control unit 84c controls the rotation speed of the main shaft (spindle) by controlling a motor (not shown) that rotates the main shaft 11. Furthermore, the a- and b-axis control units 84a and 84b drive the a-axis and b-axis motors 54 and 62 based on commands from the CPU 85. These motors 54 and 62 are also provided with encoders 54a and 62a, which can detect the rotation angles of the support mechanism 40 around the a-axis and b-axis.

[0034] In this way, the CPU 85 controls each part of the machining device 100, thereby performing predetermined machining on the workpiece W held as described above. The CPU 85 loads a program into storage means such as the memory 86m and executes each operation and process described below.

[0035] [Tool change operation] As described above, in this embodiment, in the changing operation of changing the tool held by the spindle 11 to one of the plurality of tools stored in the tool magazine 70, the CPU 85 can execute an operation of checking whether or not the tool 12 is held by the spindle 11 using the touch sensor 96. That is, in the changing operation, after the replaced tool 12 is held by the spindle 11, the CPU 85 can execute a first mode in which the CPU 85 detects the tip of the tool 12 held by the spindle 11 using the touch sensor 96 and then starts machining using the tool 12. Furthermore, after the CPU 85 returns the tool 12 held by the spindle 11 to the tool magazine 70, the CPU 85 executes an operation of checking whether or not the tool 12 is held by the spindle 11 using the touch sensor 96.

[0036] [Workpiece holding part] In this embodiment, a plurality of single-crown blocks are fixed as the workpieces W by a dedicated jig (holding portion 51), and this is assembled to the workpiece holding device 50 for machining. The holding portion 51 for holding such a plurality of workpieces (blocks) W will be explained with reference to FIG. Reveal.

[0037] The holding unit 51 has a frame 51a, and multiple workpieces W are fixed to the frame 51a with fixing screws 51b. In this embodiment, there are 12 such fixing mechanisms for each workpiece W per holding unit 51. A workpiece number 51c is assigned to each of these fixing mechanisms. The holding unit 51 also has fixing screw holes 51d, and is fixed by inserting screws into these fixing screw holes 51d and screwing the screws into predetermined screw holes in the workpiece holding device 50 of the processing machine 100.

[0038] The processing machine 100, with the above-described configuration, moves the spindle 5 and the holder 51 holding the workpiece W relatively in three directions, the X, Y, and Z axes, while rotating the holder 51, thereby performing a predetermined cutting process on the front or back surface of the workpiece W. That is, the processing machine 100 can process multiple workpieces (workpieces W) arranged in multiple processing areas. The processing areas are predetermined areas in the X-axis and Y-axis directions corresponding to the workpiece numbers. In this embodiment, there are a maximum of 12 processing areas. That is, the holder 51 can mount up to 12 workpieces W. Therefore, the processing machine 100 can process up to 12 workpieces W in a single processing operation.

[0039] Next, the reversing portion to which the fixing plate for processing in this embodiment is attached will be described.

[0040] In the disc clamp unit 400 shown in FIG. 4(a), other components are attached to a mounting plate 401 (reversing member) which is a lower-layer component that is supported at both ends and attached to the rotation support portion 19. When a disk-shaped workpiece is attached, the system is composed of a disk holder 402, which is a middle-layer part that holds the periphery of the disk-shaped workpiece, and a disk pressing plate 403, which is an upper-layer part that serves as a pressing member that presses down and fixes the disk-shaped workpiece from above. A mounting plate 401 is attached to the rotation support part 19, and functions as a reversing member that reverses the surface facing the tool from one side to the other side opposite the one side by the driving force of a motor (not shown). That is, the reversing member rotates the attached workpiece 180° to adjust the workpiece relative to the tool. The surface to be machined of the block is turned over.

[0041] 4(b) shows that a block fixing plate 500, which is a holding member that holds a plurality of block-shaped workpieces 504 (second workpieces), is attached to the mounting plate 401. The number engraved on the block fixing plate 500 indicates the number of workpieces that can be held, and the workpieces 504 are attached below that number. The workpieces are inserted into material mounting holes 502 and fixed from above with set screws 501. Anti-rotation pins 503 fit into recesses in the workpieces 504 to prevent the workpieces 504 from rotating during machining.

[0042] The tool exchange unit in the embodiment of the present invention will be described with reference to FIGS.

[0043] 5 is a perspective view of a four-axis processing machine according to another embodiment of the present invention. The four-axis processing machine does not have the first rotation axis 50 (a-axis) of the processing machine 100 described above, and a block fixing plate 600 is attached in the axial direction of a second rotation axis 60 (b-axis). The second rotation axis 60 can rotate at least 180 degrees, so that the workpiece 504 fixed to the block fixing plate 600 can be turned over.

[0044] In this embodiment, the second rotation mechanism 60 can rotate the block fixing plate 600 360° around the b-axis. Note that the center of rotation of the b-axis passes through the center of the workpiece 504 in the thickness direction, so the distance from the b-axis, which is the central axis of rotation, to the front surface is the same as the distance from the b-axis to the back surface. Therefore, even if the workpiece 504 is turned over, the positional relationship between the center of the workpiece W in the thickness direction and the tool 12 does not change.

[0045] Fig. 6 is a perspective view of a magazine according to an embodiment of the present invention. Also, Figs. 7(b) to (d) show cross-sectional views of the AA section shown in Fig. 7(a). As shown in Fig. 7(b), the tool magazine 70 described above has a through-hole 73 formed therein for storing the tool 12. Because the hole 73 is longer than the tool 12, when the tool 12 is stored inside the magazine 70 as shown in Fig. 7(b), the tool 12 is contained inside the tool magazine 70. Therefore, when cleaning the inside of the machining area, for example, the worker's hand will not come into contact with the cutting edge of the tool 12 and be injured. Further, a slit 71 is formed in the tool magazine 70, and the width of the slit 71 is larger than the shaft diameter of the tool 12. Therefore, the tool 12 can pass through the slit 71.

[0046] 7(b) to (d), the operation of removing tool 12a from tool magazine 70 according to the embodiment of the present invention will be described. Tool 12a is set in the device in the state shown in FIG. 7(b), and tool 12a is gripped by spindle 11 and raised to the state shown in FIG. 7(c) where the tip of tool 12a is above bottom surface 71a of slit 71. Since tool 12a can pass through slit 71, spindle 11 moves in the x-axis direction and reaches the position shown in FIG. 7(d) above touch sensor 96.

[0047] The slit 71 reduces the amount of movement in the Z-axis direction when removing a tool 12 stored in the tool magazine 70, thereby shortening the length of the first moving mechanism 10. This makes it possible to reduce the size of the device in the Z-axis direction. Furthermore, because the amount of movement during tool replacement is reduced, the time required for tool replacement can also be reduced. Furthermore, because the bottom surface 71a of the slit 71 is higher than the top surface 96a of the detection sensor 96, even if a tool 12 longer than the slit 71 is attached, the tool 12 will not damage the sensor 96 before it hits the slit 71.

[0048] FIG. 8 is a perspective view of a magazine according to an embodiment of the present invention. The brush 72 is shaped like a brush and is configured to be attached to the slit 71. The gap of the brush 72 attached to the slit 71 is narrower than the shaft diameter of the tool 12, so the brush 72 comes into contact with the tool 12 and can clean chips attached to the cutting edge of the tool 12. The brush 72 may be made of low-hardness rubber or a sponge-like material. The brush 72 also has the effect of preventing chips from entering the inside of the tool magazine 70 during machining.

[0049] 9 and 10 are perspective views of a rotary magazine according to another embodiment of the present invention. In this embodiment, the tool magazine is independent of the third movement mechanism 30. The tool magazine disc 74 rotates around a rotation axis 74b, and multiple tools 12a placed on the tool magazine disc 74 move to a tool change point P. The second movement mechanism 20 and the first movement mechanism 10 move the spindle 11 to the change point P to change the tools. Also, in this embodiment, a tool magazine cover 75 is installed below the tool magazine disc 74. The magazine cover 75 is fixed and does not rotate, and surrounds the tools 12 to prevent the user from touching the cutting edges of the tools 12.

[0050] Slits 74a and 75a are formed in the tool magazine disc 74 and the magazine cover 75, respectively, and the tool 12 passes between the notches 74a and 75a, thereby reducing the amount of movement of the spindle 11 in the z-axis direction. Also, because there is only one notch 75a, chips produced during cutting are less likely to enter the magazine.

[0051] This embodiment makes it possible to increase the number of exchangeable tools without increasing the amount of movement in the x, y and z directions. [Explanation of symbols]

[0052] 11...Spindle 12...Tools 41...Holding device (holding part) 70···Tool magazine 71 Slit 74 Tool magazine disc 75···Magazine cover 85 CPU (control means) 96 Touch sensor (tip detection means) 100...Processing equipment 101....Exterior cover (casing) 102···Opening and closing door 110 Open / close detection sensor (open / close detection means) 111···Magnet 112 Magnetic sensor (magnetic detection means) 120... Selection unit (selection means) 200....Moving device (moving means) 600···Block fixing plate W···Workpiece (object to be processed)

Claims

1. a spindle for gripping and processing a tool; a tool magazine for storing a plurality of tools; a moving means for moving the spindle in a spindle direction and in a direction perpendicular to the spindle direction; The machining device is characterized in that the tool magazine has a plurality of slits formed therein, each of which is open to the top surface in the spindle direction and corresponds to a plurality of tools.

2. 2. The processing machine according to claim 1, wherein the length of the slit is shorter than the overall length of the tool.

3. 2. The processing machine according to claim 1, further comprising a touch sensor for measuring the length of the tool between the workpiece to be processed by the tool and the tool magazine.

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