WO2019124560A1

WO2019124560A1 - Rotary tool device and machine tool

Info

Publication number: WO2019124560A1
Application number: PCT/JP2018/047388
Authority: WO
Inventors: 恭太小竹
Original assignee: シチズン時計株式会社; シチズンマシナリー株式会社
Priority date: 2017-12-22
Filing date: 2018-12-21
Publication date: 2019-06-27
Also published as: JP7311428B2; JPWO2019124560A1; TW201927441A

Abstract

This rotary tool device has: a power transmission mechanism which has a plurality of gears arranged so as to be engaged with a power source and to mesh with one another and to which power is transmitted from the power source; a rotary shaft that is rotated by the power transmitted from the power transmission mechanism and that is provided with a tool mounting part which attachably/detachably holds a rotary tool for machining a workpiece; and a locking member that, when restricting rotation of the rotary shaft, locks any one of the gears in a state where the power transmission mechanism is engaged with the power source.

Description

Rotary tool device and machine tool

The present invention relates to a rotary tool device and a machine tool having the rotary tool device.

Patent Document 1 describes a machine tool having a rotary tool device that uses a power tool to rotate a tool shaft having a rotary tool mounted at one end by power, and processes a workpiece with the rotary tool.

FIG. 1 (a) is a partially enlarged perspective view of the tool rest described in Patent Document 1, and FIG. 1 (b) is a diagram showing the engagement state of the tool axis when the turret is in the pivotable position, FIG. 1C is a view showing the engagement state of the tool shaft when the turret is in the fixed position.

By moving the turret 960 in the extending direction of the drive shaft 930, the tool rest 900 switches between a pivotable position where the turret 960 can pivot and a fixed position where the turret 960 is fixed.

When the turret 960 is in the pivotable position, the turret 960 rotates in response to the rotation of the turret pivot 962 as the

couplings

912 and 961 are separated. Further, the tooth groove of the gear 967 is engaged with and fixed to a projecting portion 953 which is an end of the locking member 952. The gear 967 is rotatably disposed at the non-pivoting member 940 via a bearing 964 a and disposed at one end of the rotating tool shaft 964. The rotating tool axis 964 rotatably holds the rotating tool 990. The locking member 952 is inserted and fixed in a pivoting plate 950 rotatably held by the non-pivoting member 940 via a bearing 950a. The pivoting plate 950 pivots with the turret 960 as the turret 960 pivots. The pivoting plate 950 pivots with the turret 960 so that the rotary tool 990 connected to the gear 967 is fixed relative to the turret 960 while the turret 960 pivots.

When the turret 960 is in the fixed position, the turret 960 is fixed to the holding member 911 by the

couplings

912 and 961 being engaged. Further, the gear 967 is separated from the protrusion 953 and meshes with a gear 943 that rotates in response to the rotation of the drive shaft 930. The gear 943 is disposed at one end of an intermediate drive shaft 942 rotatably disposed on the non-pivot member 940 via a bearing 942a. When the turret 960 is in the fixed position, the gear 967 meshes with the gear 943, whereby the rotary tool 990 rotates via the gear 967 and the gear 943 in response to the rotation of the drive shaft 930.

Further, the gear 967 disposed at one end of the rotary tool shaft 966 which is not indexed is the turret 960 by the projection 955 or the like of the locking member 954 even when the turret 960 is in either the pivotable position or the fixed position. Fixed against

The machine tool described in Patent Document 1 prevents rotation of the rotating tool shaft easily with a simple structure by inserting the projection 953 in the tooth groove of the gear 967 when the turret 960 is in the pivotable position. be able to.

Patent No. 5269632 gazette

However, in the tool post described in Patent Document 1, when the turret 960 is in the pivotable position, it is connected to the gear 967 connected to the rotary tool engaged and fixed to the projection 953, and to the power source The gear 943 is spaced apart. In the tool post described in Patent Document 1, it is not easy to keep the phase relationship on the power source side and the phase relationship of the rotary tool constant because the gear 967 to be fixed and the gear 943 are separately disposed. .

An object of the present disclosure is to provide a rotary tool device capable of keeping constant the phase relationship between the drive shaft of the power source and the rotary shaft that rotates the rotary tool when the rotation of the rotary tool is stopped.

The rotary tool device according to the embodiment includes a power transmission mechanism having a plurality of gear wheels engaged with a power source and disposed in mesh with each other and to which power is transmitted from the power source, and a rotary tool for processing a workpiece. A tool mounting portion for detachably holding is provided, and the power transmission mechanism is engaged with the power source when restricting the rotation of the rotation shaft rotated by the power transmitted by the power transmission mechanism and the rotation shaft And a locking member for locking any of the plurality of gears in the state.

Furthermore, in the rotary tool device according to the embodiment, the locking member is engaged with one of the tooth grooves of the plurality of gears by moving in the movement direction orthogonal to the axial direction in which the rotation axis extends, and rotates. It is preferable to regulate the rotation of the shaft.

Furthermore, in the rotary tool device according to the embodiment, the plurality of gear wheels are preferably arranged along the moving direction, and the locking member is engaged with the gear wheels located at the end.

Furthermore, in the rotary tool device according to the embodiment, the rotation restriction mechanism includes a cylinder including a piston having a groove extending in the axial direction and extending in a direction different from the axial direction and the moving direction, The locking member preferably further includes a connecting member fixed to the stopper and the other end inserted in the groove, and the locking member moves in the moving direction in response to the axial movement of the cylinder.

In addition, the machine tool according to the embodiment has a plurality of gear wheels engaged with the power source and disposed in mesh with each other, and a power transmission mechanism to which power is transmitted from the power source, and a rotary tool for processing a workpiece Is provided, and the power transmission mechanism is engaged with the power source when the rotation shaft rotated by the power transmitted by the power transmission mechanism and the rotation of the rotation shaft are restricted. Control device that has a locking member that locks any of a plurality of gears in a locked state, and a control that outputs a rotation restriction command that indicates that the rotation of the rotation shaft is restricted when the rotary tool is replaced And an apparatus.

The rotary tool device and the machine tool according to one embodiment can keep the phase relationship between the power source side and the rotary tool constant when the rotation of the rotary tool is stopped.

It is a figure which shows a prior art. It is a perspective view of a machine tool concerning a 1st embodiment. (A) is a front view of the rotary tool shown in FIG. 2, (b) is a rear view of the rotary tool shown in FIG. (A) is a top view of the rotary tool shown in FIG. 2, (b) is a bottom view of the rotary tool shown in FIG. (A) is a left side view of the rotary tool shown in FIG. 2, (b) is a right side view of the rotary tool shown in FIG. FIG. 4 is a cross-sectional view taken along a line AA shown in FIG. 3 (b). (A) is a cross-sectional view taken along the line EE 'shown in FIG. 5 (b), (b) is a partially enlarged view of a region indicated by arrow G in (a), (c) is (a) FIG. 3D is a partial enlarged view of a region indicated by arrow H, and FIG. 3D is a cross-sectional view taken along the line BB ′ shown in FIG. FIG. 6 is a cross-sectional view taken along the line FF ′ shown in FIG. 5 (b). FIG. 5B is a cross-sectional view taken along the line DD 'shown in FIG. 5 (a). It is a functional block diagram of the machine tool shown in FIG. It is a flowchart of the rotation tool exchange process performed by the NC apparatus shown in FIG. It is a figure which shows the state of the rotary tool apparatus before the process of S103 is performed, (a) is sectional drawing and partial expanded sectional view of a rotary tool apparatus, (b) is AA shown to (a) It is sectional drawing in alignment with a line, and a partial expanded sectional view. It is a figure which shows the state of the rotary tool apparatus after the process of S103 was performed, (a) is sectional drawing and partial expanded sectional view of a rotary tool apparatus, (b) is AA shown to (a) It is sectional drawing in alignment with a line, and a partial expanded sectional view. It is a figure which shows the state of the rotary tool apparatus after the process of S104 was performed, (a) is sectional drawing and partial expanded sectional view of a rotary tool apparatus, (b) is AA shown to (a) It is sectional drawing in alignment with a line, and a partial expanded sectional view. It is a figure which shows the state of the rotary tool apparatus after the process of S105 was performed, (a) is sectional drawing and partial expanded sectional view of a rotary tool apparatus, (b) is AA shown to (a) It is sectional drawing in alignment with a line, and a partial expanded sectional view. It is a figure which shows the state of the rotary tool apparatus after the process of S107 was performed, (a) is sectional drawing and partial expanded sectional view of a rotary tool apparatus, (b) is AA shown to (a) It is sectional drawing in alignment with a line, and a partial expanded sectional view. It is a figure which shows the state of the rotary tool apparatus after the process of S108 was performed, (a) is sectional drawing and a partial expanded sectional view of a rotary tool apparatus, (b) is AA shown to (a) It is sectional drawing in alignment with a line, and a partial expanded sectional view. It is a figure which shows the state of the rotary tool apparatus after the process of S109 was performed, (a) is sectional drawing and partial expanded sectional view of a rotary tool apparatus, (b) is AA shown to (a) It is sectional drawing in alignment with a line, and a partial expanded sectional view. It is a perspective view of a machine tool concerning a 2nd embodiment. It is a functional block diagram of the machine tool shown in FIG. FIG. 21 is a partial side view of the machine tool shown in FIG. 20 including a rotary tool device and an automatic tool changer. FIG. 21 is a transparent perspective view of the automatic tool changer shown in FIG. 20. It is a functional block diagram of the automatic tool changer shown in FIG. (A) is a perspective view of the rotary tool holding device shown in FIG. 22, (b) is a front view of the rotary tool holding device shown in FIG. 22, (c) is a partial side view of the rotary tool holding device (D) is an enlarged view of the part shown by arrow A of (b). FIG. 24 is a flowchart of machining processing and rotary tool replacement processing executed by the NC device shown in FIG. It is a figure which shows the state of the rotary tool apparatus and automatic tool change apparatus before the process of S201 is performed, (a) is a 1st perspective view, (b) is a side view, (c) is a figure. It is a 2nd perspective view. It is a figure which shows the state of the rotary tool apparatus after performing the process of S201, and an automatic tool changer, (a) is a 1st perspective view, (b) is a side view, (c) is a figure. It is a 2nd perspective view. It is a figure which shows the state of the rotary tool apparatus and automatic tool changer after the process of S202 is performed, (a) is a 1st perspective view, (b) is a side view, (c) is a figure. It is a 2nd perspective view. It is a figure which shows the state of the rotary tool apparatus and automatic tool changer after the process of S203 is performed, (a) is a 1st perspective view, (b) is a side view, (c) is a figure. It is a 2nd perspective view. It is a figure (the 1) showing the state of a rotary tool device and an automatic tool change device when processing of S208 is performed, (a) is a 1st perspective view, (b) is a side view, (C) is a second perspective view. It is a figure (the 2) showing the state of a rotary tool device and an automatic tool change device when processing of S208 is performed, (a) is a 1st perspective view, (b) is a side view, (C) is a second perspective view. It is a figure (the 3) showing the state of a rotary tool device and an automatic tool change device when processing of S208 is performed, (a) is a 1st perspective view, (b) is a side view, (C) is a second perspective view. It is a figure (the 1) showing the state of a rotary tool device and an automatic tool change device when processing of S210 is performed, (a) is a 1st perspective view, (b) is a side view, (C) is a second perspective view. It is a figure (the 2) showing the state of a rotary tool device and an automatic tool change device when processing of S210 is performed, (a) is a 1st perspective view, (b) is a side view, (C) is a second perspective view. It is a figure (the 1) showing the state of a rotary tool device and an automatic tool change device when processing of S212 is performed, (a) is a 1st perspective view, (b) is a side view, (C) is a second perspective view. It is a figure (the 2) showing the state of a rotary tool device and an automatic tool change device when processing of S212 is performed, (a) is a 1st perspective view, (b) is a side view, (C) is a second perspective view. It is a figure (the 1) showing the state of rotary tool device and automatic tool change device when processing of S214 and S215 is performed, (a) is a 1st perspective view, (b) is a side view. (C) is a second perspective view. It is a figure (the 2) showing the state of rotary tool device and automatic tool change device when processing of S214 and S215 is performed, (a) is a 1st perspective view, (b) is a side view. (C) is a second perspective view. It is a figure (the 3) showing the state of rotary tool device and automatic tool changer when processing of S214 and S215 is performed, (a) is a 1st perspective view, (b) is a side view. (C) is a second perspective view. It is a figure (the 4) showing the state of rotary tool device and automatic tool changer when processing of S214 and S215 is performed, (a) is a 1st perspective view, (b) is a side view. (C) is a second perspective view. It is a figure (the 5) showing the state of rotary tool device and automatic tool changer when processing of S214 and S215 is performed, (a) is a 1st perspective view, (b) is a side view. (C) is a second perspective view. It is a figure (the 6) showing the state of rotary tool device and automatic tool changer when processing of S214 and S215 is performed, (a) is a 1st perspective view, (b) is a side view. (C) is a second perspective view. It is a figure which shows the state of the rotary tool apparatus and automatic tool change apparatus after the process of S218 is performed, (a) is a 1st perspective view, (b) is a side view, (c) is a figure. It is a 2nd perspective view.

Hereinafter, a rotary tool device and a machine tool according to the embodiment will be described in detail with reference to the attached drawings. However, the technical scope of the present invention is not limited to those embodiments. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals and redundant description will be omitted. The scale and the like of the drawings are appropriately changed for the sake of explanation.

(Configuration and Function of Rotary Tool Device and Machine Tool According to First Embodiment)
The configurations and functions of the rotary tool device and the machine tool according to the first embodiment will be described with reference to FIGS. Moreover, in FIG. 10, the air piping is shown by a broken line, and the electrical wiring is shown by a dashed dotted line.

The machine tool 100 has a front main spindle 110 and a back main spindle 130 facing each other in the left and right direction, and is provided with a tool post 120 and a back tool holding portion 140 in the front and back.

The right front main spindle 110 rotatably supports the front main spindle. The left back spindle 130 rotatably supports the back spindle. The front main spindle and the rear main spindle integrally hold the work via the chuck. The rear side tool post 120 holds a tool for processing a work held on the front main spindle. The tool rest 120 has a rotary tool device 1 which rotatably holds a rotary tool including the first rotary tool 261 and the second rotary tool 262. The front side rear surface tool holding portion 140 holds a tool for processing a workpiece held by the rear surface main shaft. The machine tool 100 processes the workpiece held on the front spindle by the tool held on the cutter platform 120 by moving the front spindle 110, the back spindle 130 and the tool post 120, and the workpiece held on the back spindle Can be processed by the tool held by the back surface tool holder 140. With respect to the machine tool 100, the axial direction of the front main spindle and the back main shaft is defined as the Z direction, the vertical direction orthogonal to the Z direction is defined as the Y direction, and the horizontal direction orthogonal to the Z direction and the Y direction is defined as the X direction. The configurations and functions of the front main spindle unit 110, the back main spindle unit 130, and the back tool holding unit 140 are conventionally known, and the detailed description will be omitted.

The rotary tool device 1 is rotatably supported by a rotary device 121 for supplying power to the rotary tool held by the rotary tool device 1 with the Y direction as an axis. The rotation device 1 is integrally attached to the XY table 122. A turning motor 123 for supplying power for turning the rotary tool device 1 is provided in the rotating device 121.

As shown in FIGS. 3 to 6, in the case of the rotary tool device 1, the drive shaft 20, the first rotation shaft 21, the second rotation shaft 22 and the power transmission mechanism 23 are housed in the housing 10.

The drive shaft 20 is a shaft member extending in the X direction, and is rotatably supported by the housing 10 via the bearing 103. One end of the drive shaft 20 is connected to a transmission member 104 (see FIG. 10) for transmitting the power generated by the motor 161 (see FIG. 10) as a power source to the drive shaft 20 via a bevel gear. Is connected to the power transmission mechanism 23. The power of the motor 161 is transmitted to the power transmission mechanism 23 via the drive shaft 20.

The first rotation shaft 21 is provided with a first tool mounting portion 21 b at one end of a first shaft portion 21 a and is rotatably supported by the housing 10 via a bearing 103. The first shaft portion 21 a is a shaft member extending in the X direction, and the first tool mounting portion 21 b holds the first rotary tool 261.

As shown in FIG. 7, the second rotation shaft 22 has a shaft portion 22 a. The shaft portion 22a has a hollow penetrating in the axial direction, and the tool holding portion 22b, the elastic member 22c, and the fixing member 22d are disposed in the hollow interior. The shaft portion 22 a is provided with a tool mounting portion 22 f at one end, and the other end protrudes into the cylinder chamber 265. The shaft 22a holds the second rotary tool unit 263 by the tool mounting portion 22f. The second rotary tool 262 is detachably provided to the second rotary tool unit 263. The second rotary tool 262 protrudes from one end of the second rotary tool unit 263 and the anchor 264 protrudes from the other end. The tool holding portion 22b is provided with an air hole 22e penetrating therethrough, and is engaged with the anchor 264 at one end on the tool side, and the other end is engaged with the fixing member 22d. An elastic member 22c is externally fitted to the tool holding portion 22b between the fixing member 22d and the shaft portion 22a. The fixing member 22d is a member having two cylindrical portions with different diameters, and the circumferential surface of the large-diameter cylindrical portion is in frictional contact with the inner surface of the shaft portion 22a.

The first air supply unit 11, the second air supply unit 12, the third air supply unit 13, and the fourth air supply unit 14, the fifth air supply unit 15, and the sixth air supply unit 16 are provided on the side surface of the housing 10. Is placed.

The piston 266 is accommodated in the cylinder chamber 265, and the first air supply unit 11 is in communication with the opposite side of the shaft 22 a sandwiching the piston 266 in the cylinder chamber 265. The second air supply unit 12 communicates with the shaft 22 a in the cylinder chamber 265. When air is supplied from the first air supply unit 11, the fixing member 22d is moved in the X direction via the piston 266, whereby the second rotary tool unit 263 is opened (unlocked). The elastic member 22c contracts in response to the pressure of the tool holding portion 22b and the fixing member 22d. Further, when air is supplied from the second air supply unit 12, the piston returns in the X direction, the fixing member 22d returns by the elastic force of the elastic member 22c, and the second rotary tool unit 263 is locked (locked). During movement of the piston 266 by the supply of air to the first air supply unit 11, the air supply passage formed in the piston 266 communicates with the third air supply unit 13 and abuts on the fixing member 22d to supply the air. The passage communicates with the air hole 22e. When the air is supplied from the third air supply unit 13 while the second rotary tool unit 263 is opened, the inside of the second rotary shaft 22 is blown by the air supplied via the inside of the air hole 22e. Removes chips and the like attached to the tool mounting location by being done.

The second rotary tool unit 263 is normally mounted on the tool mounting portion 22f by supplying air from the sixth air supply portion 16 into the tool mounting portion 22f and detecting the pressure of air inside the tool mounting portion 22f. May be configured to confirm that the

As shown in FIG. 8, the power transmission mechanism 23 includes a first gear 23 a, a second gear 23 b engaged with the first gear 23 a, a third gear 23 c engaged with the second gear 23 b, and a third gear And a fourth gear 23d engaged with the gear 23c. The first gear 23a to the fourth gear 23d are disposed along the Y direction. The first gear 23a is engaged with the drive shaft 20 via an engagement member 23e such as a key. The third gear 23c is engaged with the first rotation shaft 21 via the engagement member 23e. The fourth gear 23d is engaged with the second rotation shaft 22 via the engagement member 23e.

The first gear 23 a rotates in response to rotation of the engaged drive shaft 20 by power from the motor 161. The second gear 23b rotates in response to the rotation of the first gear 23a. The third gear 23c rotates in response to the rotation of the second gear 23b. The rotation of the third gear 23c causes the first rotation shaft 21 to rotate, and the rotation of the first rotation shaft 21 causes the first rotation tool 261 to rotate. The fourth gear 23d rotates in response to the rotation of the third gear 23c. As the fourth gear 23d rotates, the second rotation shaft 22 rotates, and as the second rotation shaft 22 rotates, the second rotation tool 262 rotates.

The piston 24a is inserted into a cylinder chamber 24f formed in the X direction and formed below the fourth gear 23d. The piston 24a is formed with a groove 24d extending in a direction intersecting with the X direction and the Y direction. The groove 24 d is formed to be inclined downward toward the tip of the tool.

The locking member 24b is slidably accommodated in an accommodation chamber formed immediately below the fourth gear 23d so as to intersect the cylinder chamber 24f. The locking member 24b has a protruding locking portion 24e at its upper end, and is inserted into the piston. A connecting member 24c whose both ends are inserted in the groove 24d penetrates the locking member 24b. The extending direction of the locking member 24 b and the connecting member 24 c are orthogonal to each other.

The casing 10 is provided with a first cylinder pipe 24h connecting the fourth air supply unit 14 and the opposite tool side of the cylinder chamber 24f across the piston 24a, and the tool side across the piston 24a of the cylinder chamber 24f A second cylinder pipe 24i connecting to the fifth air supply unit 15 is formed. When air is supplied from the fourth air supply unit 14, the piston 24a moves in the cylinder chamber 24f to the tool side, and moves the locking member 24b to the fourth gear 23d side via the connection member 24c. In addition, when air is supplied from the fifth air supply unit 15, the piston 24a moves in the cylinder chamber 24f to the side opposite to the tool, and separates the locking member 24b from the fourth gear 23d via the connecting member 24c. Move in the direction.

The rotational position of the fourth gear 23d is positioned so that the tooth groove of the fourth gear 23d and the locking portion 24e face each other, and the locking member 24b is moved to the fourth gear 23d side to obtain the locking portion 24e. Can be engaged with the tooth spaces of the fourth gear 23d. The rotational position of the fourth gear 23d is fixed by meshing the locking portion 24e with the tooth groove of the fourth gear 23d and locking the locking member 24b to the fourth gear 23d. By moving the locking member 24b in a direction away from the fourth gear 23d side, the locking portion 24e meshed with the tooth groove of the fourth gear 23d can be separated from the tooth groove of the fourth gear 23d. The rotation of the fourth gear 23d is permitted by separating the locking portion 24e from the tooth groove of the fourth gear 23d.

As shown in FIG. 10, the machine tool 100 includes a motor 161 for rotating the drive shaft 20, an air supply device 170, an automatic tool changer 180, and an NC (Numerical Control) device 190, also called a control device. Furthermore, it has. The motor 161 rotates according to the power supplied from the power supply circuit, and the rotation shaft 162 of the motor 161 rotates according to the rotation of the motor 161 to transmit the power generated by the motor 161 to the transmission member 104 and the drive shaft 20. The power is transmitted to the power transmission mechanism 23 via the power transmission mechanism 23. A phase detection sensor 163 for detecting the phase of the rotation shaft 162 of the motor 161 is provided. The phase detection sensor 163 is an encoder, and outputs a phase signal indicating the phase of the rotating shaft 162 to the NC device 190 via the electrical wiring 105.

The air supply device 170 includes first to sixth air pipes 171 to 176 and a main body 177. Each of the first air piping 171 to the third air piping 173 is connected to the first air supply unit 11, the second air supply unit 12, and the third air supply unit 13. Each of the fourth air piping 174 to the sixth air piping 176 is connected to the fourth air supply unit 14, the fifth air supply unit 15, and the sixth air supply unit 16. The main body portion 177 includes a compressor, an air valve, a control circuit, and the like, and each of the first air piping 171 to the sixth air piping 176 is responsive to an air control signal input from the NC device 190 via the electrical wiring 105. Supply air.

The NC device 190 includes an interface unit 191, a storage unit 192, an input unit 193, an output unit 194, and a processing unit 195.

The interface unit 191 communicates with the motor 161, the phase detection sensor 163, the air supply device 170, the automatic tool changer 180, and the like through the electrical wiring 105. The storage unit 192 includes, for example, a semiconductor storage device, and stores programs, data, and the like used for processing in the processing unit 195. For example, the storage unit 192 may have a rotary tool change program or the like for causing the processing unit 195 to execute a rotary tool change process of changing the second rotary tool unit 263 provided with the second rotary tool 262 by the automatic tool changer 180. Remember. The rotary tool change program may be installed in the storage unit 192 from a computer readable portable recording medium such as a CD-ROM using a known setup program or the like.

The input unit 193 may be any device as long as it can input data, generates a signal corresponding to the operation by the operator, and the generated signal is supplied to the processing unit 195 as an instruction of the operator. The output unit 194 may be any device as long as it can display a video, an image, and the like, and displays a video according to the video data supplied from the processing unit 195, an image according to the image data, and the like.

The processing unit 195 centrally controls the overall operation of the machine tool 100, and is, for example, a CPU. The processing unit 195 can execute a rotating tool replacement process of replacing the second rotating tool unit 263 based on the rotating tool replacement program stored in the storage unit 192.

The processing unit 195 includes a processing command unit 1950, a replacement command acquisition unit 1951, a stop command unit 1952, a tool lock command unit 1953, a tool replacement command unit 1954, a blow command unit 1955, and a stop release command unit 1956. Have. Each of these units is a functional module realized by a rotary tool replacement program executed by a processor included in the processing unit 195. Alternatively, these units may be mounted on the NC device 190 as firmware. The processing command unit 1950 can execute various processes for processing a workpiece. The machining command unit 1950 can output, to the replacement command acquisition unit 1951, a rotary tool replacement command indicating that the second rotary tool unit 263 should be replaced.

(Rotary tool change processing by NC device 190)
The rotating tool replacement process by the NC device 190 will be described with reference to FIGS. The rotating tool replacement process shown in FIG. 11 is executed mainly by the processing unit 195 in cooperation with each element of the NC device 190 based on a rotating tool replacement program stored in advance in the storage unit 192.

First, the replacement command acquisition unit 1951 acquires a rotating tool replacement command from the processing command unit 1950 (S101). Next, the stop command unit 1952 outputs a stop command indicating that the second rotary shaft 22 stops at a predetermined phase to the motor 161 (S102), and the motor 161 responds to the input of the stop command to the second rotary shaft. The rotating shaft 162 is stopped at a position where the phase of 22 becomes a predetermined phase. When the rotation shaft 162 is stopped at a position where the phase of the second rotation shaft 22 becomes a predetermined phase, the predetermined tooth groove of the fourth gear 23 d faces the locking portion 24 e. Next, the stop command unit 1952 outputs, to the air supply device 170, a rotation regulation command indicating regulation of the rotation of the second rotary shaft 22 (S103).

As shown in FIGS. 12 and 13, when the rotation restriction command is input in S103, the air supply device 170 supplies the air to the fourth air supply unit 14 through the fourth air pipe 174. By supplying air to the fourth air supply unit 14, the locking member 24b is engaged with the tooth groove of the fourth gear 23d. The engagement of the locking member 24b with the tooth groove of the fourth gear 23d restricts the rotation of the drive shaft 20, the first rotation shaft 21 and the second rotation shaft 22.

Next, the tool lock command unit 1953 outputs an open command indicating that the second rotary tool unit 263 is opened to the air supply device 170 (S104).

As shown in FIG. 14, in S104, the air supply device 170 supplies air to the first air supply unit 11 through the first air pipe 171. By supplying air to the first air supply unit 11, the second rotary tool unit 263 is opened.

Next, the tool change command unit 1954 outputs a pulling command indicating that the second rotary tool unit 263 is pulled out to the automatic tool changer 180 (S105).

In S105, as shown in FIG. 15, the second rotary tool unit 263 held by the second rotary shaft 22 is pulled out of the second rotary shaft 22 by the automatic tool changer 180.

Next, the blow command unit 1955 outputs a blow command indicating that the air supplied to blow the inside of the second rotary shaft 22 from which the second rotary tool unit 263 has been removed, to the air supply device 170 (S106). When a blow command is input in S106, the air supply device 170 supplies air to the third air supply unit 13 via the third air pipe 173. The air supplied from the third air supply unit 13 reaches the air holes 22e, and the inside of the second rotary shaft 22 is blown by the air.

Next, the tool change command unit 1954 outputs an insertion command indicating that the second rotary tool unit 263 ′ is to be inserted instead of the second rotary tool unit 263 to the air supply device 170 (S107). The automatic tool changer 180 and the rotary tool 1 cooperate to insert the second rotary tool unit 263 'into the second rotary shaft 22 in response to the input of the insertion command.

In S107, as shown in FIG. 16, the second rotary tool unit 263 'is inserted into the second rotary shaft 22 by the automatic tool changer 180, and the second rotary tool unit 263 is accommodated on the automatic tool changer 180 side. Be done.

Generally, the automatic tool changer holds the rotary tool unit at a predetermined phase, so that the second rotary tool unit 263 can be held by the automatic tool changer 180 at a phase of the second rotary shaft 22 By engaging the locking portion 24e with the tooth groove of the gear 23d, the rotary tool unit can be exchanged between the automatic tool changer 180 and the rotary tool unit 1.

Next, the tool lock command unit 1953 outputs a locking command indicating locking of the second rotary tool unit 263 ′ to the air supply device 170 (S108).

As shown in FIG. 17, when a tool lock command is input in S108, the tool lock command unit 1953 supplies air to the second air supply unit 12 via the second air pipe 172. When air is supplied to the second air supply unit 12, the second rotary tool unit 263 'is locked. As a result, the second rotary tool 262 is replaced with a second rotary tool 262 ′ different from the second rotary tool 262.

Then, the stop release instruction unit 1956 outputs a rotation regulation release instruction indicating that the second rotation shaft 22 can be rotated, to the air supply device 170 (S109).

As shown in FIG. 18, when the rotation regulation cancellation instruction is input in S109, the air supply device 170 supplies the air to the fifth air supply unit 15 through the fifth air pipe 175. By supplying air to the fifth air supply unit 15, the drive shaft 20, the first rotation shaft 21 and the second rotation shaft 22 become rotatable.

(Operation effect of the rotary tool device and the machine tool according to the first embodiment)
The rotary tool device 1 regulates the rotation of the second rotary shaft 22 in a state where the power transmission mechanism 23 is engaged with the rotary shaft 162 of the motor 161, so that while the rotation of the second rotary shaft 22 is regulated, The phase relationship between the rotating shaft 162 of the motor 161 and the second rotating shaft 22 is maintained.

Further, in the rotary tool device 1, the gear of the power transmission mechanism 23 is locked by the locking member 24b of the rotation regulating mechanism 24 having the piston 24a, the locking member 24b and the connecting member 24c. The rotary tool device 1 has a simple structure in which the locking member 24b meshes with the tooth groove of the gear of the power transmission mechanism 23 to restrict the rotation of the second rotary shaft 22, and ensures rotation of the second rotary shaft 22. Can be regulated.

Further, in the rotary tool device 1, the gear of the power transmission mechanism 23 is disposed along the moving direction of the locking member 24b, and the locking member 24b engages with the gear located at the end, so the rotation restricting mechanism 24 The size of the rotary tool device 1 can be reduced by downsizing.

Further, in the rotary tool device 1, the locking member 24 b is moved in the movement direction orthogonal to the axial direction according to the movement of the piston 24 a in the axial direction of the second rotation shaft 22. By locking the gear located at the end, the size of the rotation restricting mechanism 24 and the rotary tool device 1 can be further reduced.

(Configuration and Function of Rotary Tool Device and Machine Tool According to Second Embodiment)
The configurations and functions of the rotary tool device and the machine tool according to the second embodiment will be described with reference to FIGS. In FIG. 19, each of the X direction, the Y direction, and the Z direction is indicated by orthogonal arrows. In FIG. 20, the air piping is shown by a broken line, and the electrical wiring is shown by a dashed dotted line. In addition, in FIGS. 21 to 22, the X direction, the Y direction, and the Z direction are directions corresponding to the X direction, the Y direction, and the Z direction shown in FIG.

The machine tool 200 differs from the machine tool 100 in having an automatic tool changer 280 and an NC unit 290 instead of the automatic tool changer 180 and the NC unit 190. The configurations and functions of the components of the machine tool 200 other than the automatic tool changer 280 and the NC device 290 are the same as the configurations and functions of the components of the machine tool 100 having the same reference numerals. Do.

As shown in FIGS. 20 and 21, the automatic tool changer 280 is disposed behind the rotary tool 1 in the machine tool 200.

The automatic tool changer 280 has a housing 286, and the housing 286 is supported by the gantry 2800 so as to be movable back and forth in the X direction. In the housing 286, a rotary tool holding device 281 and a rotary tool removing device 282 are accommodated. The rotary tool holder 281 is driven by a holder drive 283. The rotary tool removing device 282 is driven by the removing device drive device 284. The holding device driving device 283 and the pulling and pulling device driving device 284 are supplied with power by the power supply device 285. When replacing the second rotary tool units 263a to 263j for replacement contained in the automatic tool changer 280 with respect to the rotary tool device 1, the housing 286 carries out the second rotary tool units 263a to 263j and A shutter 2860 that opens and closes for loading is disposed.

As shown in FIG. 24, the rotary tool holding device 281 has a circular first holding plate 2810, a first holding rotation shaft 2811, a second holding rotation shaft 2812, a shaft connection portion 2813, and a holding bottom plate portion 2814. , A second holding plate 2815, and a magazine 2816. The first holding rotary shaft 2811 and the second holding rotary shaft 2812 are connected via a shaft connection portion 2813. The first holding rotary shaft 2811 is rotatably supported by the holding bottom plate portion 2814 via the first holding plate 2810. The second holding rotary shaft 2812 is rotatably supported by the second holding plate 2815 via the second holding plate 2815. The first holding rotary shaft 2811 and the second holding rotary shaft 2812 are rotationally driven according to the power transmitted from the holding device driving device 283.

The magazine 2816 has a magazine base 2816 a and a lapping member 2816 b. The magazine base 2816a is a circular member integrally fixed to the end of the second holding rotary shaft 2812, and a recess for holding the second rotary tool units 263a to 263j is formed along the outer edge. The lapping member 2816b is a substantially circular member having a lasso 2616e formed at the outer edge, and is integrally fixed to the end surface of the magazine base 2816a. The second rotary tool units 263a to 263j are respectively held in the recess in a state where the groove 2630 is engaged with the pivot 2616e.

In the recess, a fixing fastener 2816d consisting of an elastic member fixed at one end to the magazine substrate 2816a is provided, and each fixing fastener 2816d presses each of the second rotary tool units 263a to 263j in the recess. . Each of the second rotary tool units 263a to 263j is resiliently held in the recess by means of a fixing fastener 2816d.

The rotary tool removal and insertion device 282 has a removal base 2820, a first arm 2821, and a second arm 2822. The pulling base 2820 is provided so as to be freely moveable in the X direction and the Y direction by the pulling device driving device 284. The first arm portion 2821 and the second arm portion 2822 are a pair of arm portions extending in the direction of the rotary tool device 1 from the pulling out base portion 2820, and by moving so as to approach each other, the second rotary tool unit By holding the H.263 and moving so as to separate, the holding of the second rotary tool unit 263 is released.

The holding device driving device 283 has a motor or the like, moves the housing 286 in the X direction together with the rotary tool holding device 281 and the rotary tool removal device 282, and the first holding rotary shaft 2811 and the second holding rotary shaft 2812 By rotating, the magazine 2816 is rotated. The drawing device driving device 284 has a motor or the like, and moves the rotary tool drawing device 282 in the X direction and the Y direction.

The NC device 290 is different from the NC device 190 in having a processing unit 295 instead of the processing unit 195. The processing unit 295 includes a processing command unit 2950, a replacement command acquisition unit 2951, a stop command unit 2952, a tool lock command unit 2953, a tool replacement command unit 2954, a blow command unit 2955, and a stop release command unit 2956. Have. These units are function modules realized by a processing program executed by a processor included in the processing unit 295 and a rotating tool replacement program. Alternatively, these units may be mounted on the NC device 290 as firmware.

(Processing and rotating tool change processing by NC device 290)
The rotating tool replacement process by the NC device 290 will be described with reference to FIGS. 25 to 43. The rotating tool replacement process shown in FIG. 25 is mainly executed by the processing unit 295 in cooperation with each element of the NC device 290 based on the machining program and the rotating tool replacement program stored in advance in the storage unit 292. .

First, the processing command unit 2950 moves the tool rest 120 disposed at the initial position shown in FIG. 26 to the processing start position shown in FIG. 27 by outputting the processing position movement command to the XY table 122 (S201) .

Next, the processing command unit 2950 outputs a processing command indicating that processing is to be performed to the motor 161 and the XY table 122 (S202), and a cutting tool fixedly mounted on the XY table 122 as shown in FIG. The workpiece is processed by 12X, and then the workpiece is processed by a rotating tool rotatably mounted on the XY table 122 as shown in FIG.

As shown in FIG. 29, the workpiece is processed by the first rotary tool 261 or the second rotary tool 262 of the rotary tool device 1 according to the processing command, and the second rotary tool unit 263 of the rotary tool device 1 is processed in the next process. In the case of replacement, the tool replacement command unit 2954 outputs a standby position movement command indicating that the housing 286 of the automatic tool changer 280 should be moved to the standby position to the holding device driving device 283 (S203). The holding device drive device 283 moves the housing 286 to the standby position as shown in FIG. 29 if it does not hinder the processing of the work by the second rotary tool 262 in response to the standby position movement command being input. .

Next, the processing command unit 2950 outputs a rotating tool replacement command indicating replacement of the second rotating tool unit 263 to the replacement command acquisition unit 2951 (S204), and the replacement command acquisition unit 2951 receives the rotation command from the processing command unit 2950. A tool change command is acquired (S205). Next, after the completion of processing by the second rotary tool 262, the stop instruction unit 2952 outputs a motor stop instruction to the motor 161 (S206) and outputs a rotation restriction instruction to the air supply device 170 (S207).

Next, the tool change command unit 2954 rotates the rotary tool device 1 in the B-axis direction and moves the tool change position command to move the rotary tool device 1 to a predetermined tool change position. It outputs to 123 (S208).

In S208, as shown in FIGS. 30 to 32, first, the swing motor 123 swings the rotary tool device 1 by 90 ° B counterclockwise as viewed from above in the Y-axis direction, as shown in FIG. Next, as shown in FIG. 31, the XY table 122 moves the rotary tool device 1 so as to approach the housing 286 in the X direction. Then, as shown in FIG. 32, the turning motor 123 further turns the rotary tool device 1 counterclockwise by 90 ° B axis, and the XY table 122 includes the second rotary tool unit 263 and the rotary tool removing device 282. The rotary tool device 1 is moved so that the second rotary tool unit 263 and the first arm 2821 and the second arm 2822 face each other at the same height. At this time, in the rotary tool device 1, the gear of the power transmission mechanism 23 is locked by the locking member 24b of the rotation restricting mechanism 24.

Next, the tool lock command unit 2953 outputs an open command indicating that the second rotary tool unit 263 is opened to the air supply device 170 (S209). The second rotary tool unit 263 is opened by the air supply device 170 executing the same process as the process of S103. Next, the tool change command unit 2954 outputs a pulling command indicating that the second rotary tool unit 263 is pulled out to the automatic tool changer 180 and the XY table 122 (S210).

In S210, as shown in FIG. 33, first, the shutter 2860 is opened, and the automatic tool changer 280 inserts the second rotary tool unit 263 between the first arm 2821 and the second arm 2822. The housing 286 is moved as described above, and the second rotary tool unit 263 is held between the first arm 2821 and the second arm 2822. Next, as shown in FIG. 34, the second rotary tool unit 263 moves the rotary tool removing and moving device 282 in the X direction with respect to the housing 286 and is held by the first arm portion 2821 and the second arm portion 2822. Is pulled out of the rotary tool device 1.

Next, the blow command unit 2955 outputs a blow command indicating blowing the inside of the second rotary shaft 22 from which the second rotary tool unit 263 is removed to the air supply device 170 (S211). Next, the tool change command unit 2954 outputs an insertion command indicating that the second rotary tool unit 263 c is to be inserted instead of the second rotary tool unit 263 to the air supply device 170 and the holding device drive device 283 (S 212).

In S212, as shown in FIG. 35, first, the magazine 2816 rotates so that the second rotary tool unit 263c (corresponding to the second rotary tool unit 263 ') is disposed on the top of the magazine 2816. On the other hand, the XY table 122 moves the rotary tool device 1 in the Y direction so that the height of the second rotary shaft 22 coincides with the height of the axis of the second rotary tool unit 263c arranged at the top of the magazine 2816 . Next, as shown in FIG. 36, the XY table 122 moves the rotary tool device 1 in the X direction, and inserts the second rotary tool unit 263c into the second rotary shaft 22.

Next, the tool lock command unit 2953 outputs a locking command indicating locking of the second rotary tool unit 263c to the air supply device 170 (S213). At this time, in the rotary tool device 1, the second rotary tool unit 263c is held, and the locking of the gear of the power transmission mechanism 23 by the locking member 24b of the rotation regulating mechanism 24 is released. Next, the tool change command unit 2954 outputs an initial position movement command indicating moving the rotary tool device 1 to the initial position to the XY table 122 and the swing motor 123 (S214). Next, the tool change command unit 2954 outputs a tool storage command indicating that the second rotary tool unit 263 is stored in the magazine 2816 to the automatic tool changer 280 (S215).

In S214, first, as shown in FIG. 37, the XY table 122 moves the rotary tool device 1 in the Y direction to resist the urging force of the fixing fastener 2816d from the magazine 2816 to the second rotary tool unit 263c. Remove it upwards. Next, as shown in FIG. 38, the automatic tool changer 280 and the tool rest 120 move in the X direction so as to be separated from each other to separate the second rotary tool unit 263c from the

automatic tool changer

280, and 2860 closes. Next, as shown in FIGS. 39 and 40, the turning motor 123 turns the rotary tool device 1 90 ° B-axis clockwise as viewed from the top in the Y-axis direction from the top, and then the XY table 122 rotates the rotary tool device 1. Move in the X direction towards the front main axis. Then, as shown in FIG. 41, the turning motor 123 further turns the rotary tool device 1 clockwise by 90 ° B axis and makes the rotary tool device 1 stand by at the initial position.

On the other hand, in S215, first, as shown in FIG. 39, the rotary tool removing and moving device 282 moves in the X direction so that the groove 2630 of the second rotary tool unit 263 faces the lapping 2616e. The second rotary tool unit 263 is stopped at a phase in which the groove 2630 faces the home 2616 e according to the motor stop command of S 206. Next, as shown in FIG. 40, the rotary tool removing and moving device 282 is moved in the Y direction to engage the groove 2630 of the second rotary tool unit 263 with the hos 2616e to make the second rotary tool unit 263 a magazine. Attach to the top of the 2816. Next, as shown in FIG. 41, the rotary tool drawing and removing apparatus 282 moves in the Y direction and separates from the top of the magazine 2816. Then, as shown in FIG. 42, the rotary tool device 1 moves in the X direction, and processes the workpiece by the replaced second rotary tool unit 263c. After the end of the machining by the second rotary tool unit 263c, as shown in FIG. 43, the movement of the XY table 122 cuts the workpiece for which the machining has been completed.

(Operation effect of the rotary tool device and the machine tool according to the second embodiment)
In the machine tool 200, the groove 2630 of the second rotary tool unit 263 is aligned in the. +-. Y direction, ie, the vertical direction, between the automatic tool changer 280 and the rotary tool device 1 in Since the two-rotation tool unit 263 is stopped, the housing 2616e of the magazine 2816 of the automatic tool changer 280 can be easily engaged with the groove 2630 of the second rotation tool unit 263.

Moreover, since the machine tool 200 exchanges tools by moving both the rotary tool device 1 and the automatic tool changer 280 in the direction in which they approach each other, the space required for tool exchange can be reduced.

In addition, since the machine tool 200 exchanges the second rotary tool unit 263 via the rotary tool distracting device 282 disposed movably inside the automatic tool changer 280, the automatic tool changer 280 is made compact. be able to. Furthermore, since the machine tool 200 can make the automatic tool changer 280 compact, the automatic tool changer 280 for the machine tool 200 can be easily mounted.

Claims

A power transmission mechanism having a plurality of gear wheels engaged with the power source and disposed in mesh with each other, to which power is transmitted from the power source;
A tool mounting portion for detachably holding a rotary tool for processing a work, and a rotary shaft rotated by power transmitted by the power transmission mechanism;
A locking member for locking any one of the plurality of gears in a state in which the power transmission mechanism is engaged with a power source when regulating rotation of the rotation shaft;
A rotary tool device characterized in that.
The locking member moves in a moving direction orthogonal to the axial direction in which the rotation axis extends, thereby meshing with any one tooth groove of the plurality of gears and restricting the rotation of the rotation axis. The rotary tool device according to claim 1.
The plurality of gears are disposed along the movement direction,
The rotary tool device according to claim 2, wherein the locking member engages a gear located at an end.
A cylinder comprising a piston having a groove extending in the axial direction and extending in a direction different from the axial direction and the moving direction, a cylinder having one end fixed to the locking member and the other end being the groove And further having an inserted connecting member,
The rotary tool device according to claim 2, wherein the locking member moves in the movement direction in response to the cylinder moving in the axial direction.
A power source that outputs power,
A power transmission mechanism having a plurality of gears engaged with a power source and disposed in mesh with each other, and a power transmission mechanism to which power is transmitted from the power source, and a tool mounting portion detachably holding a rotary tool for processing a workpiece And a plurality of rotating shafts that are rotated by the power transmitted by the power transmission mechanism, and the plurality of power transmission mechanisms being engaged with a power source when regulating the rotation of the rotating shaft. A locking member for locking any of the gears of
A control device that outputs a rotation restriction command indicating restriction of rotation of the rotation shaft when replacing the rotation tool;
A machine tool characterized by having: