Tools and wire processing machines

Abstract

To provide a tool and a wire processing machine capable of stabilizing the position of a wire.SOLUTION: A tool can be attached and detached to a rotating shaft of a spindle device used in a wire processing machine for processing a wire, and includes a pin arranged coaxially with respect to the rotating shaft, a conversion unit that converts the rotational motion of the rotating shaft into linear motion along the radial direction of the rotating shaft, and a contact / separation unit that is arranged radially of the pin so as to face the outer peripheral surface of the pin and moves toward or away from the pin by the linear movement converted by the conversion unit.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present technology relates to a tool that can be attached to and detached from a rotation shaft of a spindle device used in a wire processing machine that processes wire, and to the wire processing machine. [Background technology]

[0002] A spring manufacturing machine having a spindle device has been proposed. A tool is detachably attached to the rotation axis of the spindle device. A spring is manufactured by processing a wire rod with the tool (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5948572 Summary of the Invention [Problem to be solved by the invention]

[0004] If an unnecessary gap occurs between the tool and the wire, the position of the wire will not be stable.

[0005] The present disclosure has been made in view of the above circumstances, and aims to provide a tool and a wire processing machine that can stabilize the position of a wire. [Means for solving the problem]

[0006] A tool according to one embodiment of the present disclosure is a tool that can be attached to and detached from a rotating shaft of a spindle device used in a wire processing machine that processes wire, and comprises a pin arranged coaxially with respect to the rotating shaft, a conversion unit that converts the rotational motion of the rotating shaft into linear motion along the radial direction of the rotating shaft, and a contact / separation unit that is arranged radially opposite the outer peripheral surface of the pin and moves toward or away from the pin by the linear movement converted by the conversion unit.

[0007] In the present disclosure, when a wire is held between the contact-separation portion and the pin, the position of the contact-separation portion is adjusted to a position corresponding to the width of the wire.

[0008] In the tool according to one embodiment of the present disclosure, a first holding groove for holding the wire is formed on the outer peripheral surface of the pin.

[0009] In the present disclosure, when a wire is held, the wire is inserted into the first holding groove.

[0010] In the tool according to one embodiment of the present disclosure, a second holding groove for holding the wire is formed in the contact and separation portion.

[0011] In the present disclosure, when a wire is held, the wire is inserted into the second holding groove.

[0012] In a tool according to one embodiment of the present disclosure, the conversion portion has an eccentric cam mechanism, and the approaching and separating portion is connected to the eccentric cam mechanism.

[0013] In the present disclosure, the movement of the contact and separation part can be achieved by an eccentric cam mechanism.

[0014] A wire processing machine according to one embodiment of the present disclosure is a wire processing machine comprising: a spindle device having a sleeve rotatable around an axis and a rotating shaft arranged inside the sleeve; a tool detachable from the rotating shaft; and a control device that controls the drive of the sleeve and the rotating shaft, wherein the tool comprises: a base connected to the sleeve; a pin provided on the base and arranged coaxially with respect to the rotating shaft; a conversion unit provided on the base and converting the rotational motion of the rotating shaft into linear motion along the radial direction of the rotating shaft; and a contact and separation unit arranged opposite the outer peripheral surface of the pin in the radial direction of the pin, which approaches or moves away from the pin by the linear movement converted by the conversion unit, and the control device controls the rotation of the rotating shaft to control the distance between the pin and the contact and separation unit, and controls the rotation of the rotating shaft and the sleeve to control the movement of the pin around its axis in the contact and separation unit.

[0015] In the present disclosure, the rotation of the rotating shaft is controlled to control the distance between the pin and the contact / separation portion, and the position of the contact / separation portion is adjusted to a position corresponding to the width of the wire. Therefore, unnecessary gaps are not generated between the wire and the contact / separation portion or between the wire and the pin, and the position of the wire can be stabilized. Furthermore, by controlling the rotation of the rotating shaft and the sleeve, the movement of the pin around the axis at the contact / separation portion can be controlled, and the wire can be bent into a desired shape. [Effects of the Invention]

[0016] In the tool and wire processing machine according to an embodiment of the present disclosure, when a wire is held between the contact-separation part and the pin, the position of the contact-separation part is adjusted to a position corresponding to the width of the wire, so that unnecessary gaps do not occur between the wire and the contact-separation part or between the wire and the pin, and the position of the wire can be stabilized. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a schematic front view of a wire processing machine according to a first embodiment. [Figure 2] FIG. [Figure 3] 10 is a partially enlarged front cross-sectional view schematically illustrating a lower end portion of a tool holding portion to which a spindle tool is attached when a contact / separation portion approaches a pin. FIG. [Figure 4] FIG. 10 is a bottom view schematically illustrating the spindle tool attached to the tool holding portion when the contact / separation portion approaches the pin. [Figure 5] 10 is a partially enlarged front cross-sectional view schematically illustrating the lower end portion of the tool holding portion to which the spindle tool is attached when the contact / separation portion is separated from the pin. FIG. [Figure 6] FIG. 10 is a bottom view schematically illustrating the spindle tool attached to the tool holding portion when the contact / separation portion is separated from the pin. [Figure 7] FIG. 10 is an explanatory diagram illustrating a step of extracting the wire from the spindle tool. [Figure 8]FIG. 10 is a reference explanatory view illustrating a step of extracting a wire rod from a spindle tool in another wire rod processing machine having a different configuration from that of the first embodiment. [Figure 9] 10 is an enlarged partial front cross-sectional view schematically showing a lower end portion of a spindle tool according to a second embodiment. FIG. [Figure 10] FIG. 11 is an enlarged partial front cross-sectional view schematically showing a lower end portion of a spindle tool according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0018] (Embodiment 1) The present invention will be described below based on the drawings showing a wire processing machine according to a first embodiment. In the following description, up / down, left / right, and front / rear indicated by arrows in the drawings will be used. The front and back correspond to the front and rear, respectively. Note that up / down, front / rear, left / right are used merely to facilitate understanding of the invention and do not limit the scope of the present invention. Figure 1 is a simplified front view of the wire processing machine, and Figure 2 is a simplified right side view of the wire processing machine.

[0019] The wire processing machine comprises a rectangular parallelepiped base 1 and a front wall 2 erected on the base 1. An opening 2a penetrating in the front-to-rear direction is provided in the center of the front wall 2. A wire feed unit 4 is provided on the rear side of the front wall 2 to feed the wire to the front. The wire feed unit 4 comprises a plurality of wire feed rollers that clamp and feed the wire, a wire feed unit motor, and an axial motor (all not shown). When the wire feed unit motor is driven, the wire feed rollers rotate and the wire is fed forward. When the axial motor is driven, the wire feed unit 4 can rotate the wire clamped by the wire feed rollers around the axis of the wire. The wire is, for example, a rectangular wire.

[0020] A wire rod guide 5 is provided inside the opening 2a to guide the wire rod delivered from the wire rod delivery unit 4. The wire rod guide 5 is semi-cylindrical with its axial length in the front-to-rear direction and has a groove in its axial center. The wire rod guide 5 can rotate around its axis. The wire rod delivered from the wire rod delivery unit 4 is guided forward through the groove.

[0021] A tool device 70 is supported on the front right side of the front wall 2. The tool device 70 comprises a movable plate 70a that is approximately parallel to the front wall 2, and a plurality of upper and lower rails 70b that are disposed on the front right side of the front wall 2 and extend in the vertical direction. The movable plate 70a faces the upper and lower rails 70b in the front-rear direction. A slider (not shown) is provided on the rear surface of the movable plate 70a, and the slider is slidably attached to the upper and lower rails 70b. The tool device 70 comprises a vertical motor 70f. The vertical motor 70f is fixed to the front wall 2 with its axial direction in the vertical direction. The drive shaft of the vertical motor 70f is connected to the movable plate 70a. When the vertical motor 70f is driven, the movable plate 70a moves in the vertical direction.

[0022] Left and right rails 70c extending in the left-right direction are provided on the front surface of the movable plate 70a. The tool device 70 is provided with a tool holding portion 70d. The tool holding portion 70d extends in the left-right direction, and a slider (not shown) is provided on the rear side of the tool holding portion 70d. The tool holding portion 70d is slidably connected to the left and right rails 70c via the slider. The tool device 70 is provided with a left-right motor (not shown). The left-right motor is fixed to the movable plate 70a. The drive shaft of the left-right motor is connected to the tool device 70. When driven by the left-right motor, the tool device 70 moves in the left-right direction along the left and right rails 70c. A tool T1 is removably attached to the left end of the tool holding portion 70d. The tool T1 is a tool for bending, for example, wire.

[0023] A tool device 71 is supported on the front left side of the front wall 2. The tool device 71 includes a moving plate 71a, upper and lower rails 71b, left and right rails 71c, a tool holder 71d, a left and right motor (not shown), and a up and down motor 71f. The tool device 71 is arranged so as to be bilaterally symmetrical with the tool device 70. The moving plate 71a, upper and lower rails 71b, left and right rails 71c, tool holder 71d, left and right motor, and up and down motor 71f have the same configuration as the moving plate 70a, upper and lower rails 70b, left and right rails 70c, tool holder 70d, left and right motor, and up and down motor 70f described above, except that their left and right positions are reversed, and therefore detailed description thereof will be omitted.

[0024] A tool device 73 is supported on the lower left front of the front wall 2. The tool device 73 includes a tool holding portion 73d. The tool holding portion 73d extends obliquely upward to the right, and a tool T2 is attached to the upper end of the tool holding portion 73d. The tool T2 is, for example, a cutter. Hereinafter, the tool T2 will also be referred to as cutter T2. The tool holding portion 73d is movable obliquely upward to the right and obliquely downward to the left.

[0025] A tool device 74 is supported on the lower front side of the front wall 2. The tool device 74 has a tool holding portion 74d. The tool holding portion 74d extends in the vertical direction, and a tool can be attached to the upper end of the tool holding portion 74d. In FIG. 1, no tool is attached to the tool holding portion 74d.

[0026] A tool device 75 is supported on the lower right front of the front wall 2. The tool device 75 has a tool holding portion 75d. Upper left The tool T3 is attached to the upper end of the tool holding portion 75d. The tool T3 is a tool for bending, for example, a wire rod.

[0027] Front of front wall 2 aboveA spindle device 20 is supported on the side of the tool holder 19. The spindle device 20 includes a tool holding section 19 that holds a spindle tool T4, a first tool driving motor 20a and a second tool driving motor 20b that are connected to the tool holding section 19 and drive the spindle tool T4, and a mechanism that moves the tool holding section 19 up and down, left and right, and forward and backward. The tool holding section 19 extends in the vertical direction, and the spindle tool T4 is detachably attached to the lower end of the tool holding section 19. The first tool driving motor 20a is connected to a rotating shaft 50 (see FIG. 3) that will be described later, and the second tool driving motor 20b is connected to a sleeve 52 (see FIG. 3) that will be described later.

[0028] The mechanism includes a lower plate 10 disposed above the front wall 2. The lower plate 10 is fixed to the front wall 2 and the upper portion of the wire rod feed unit 4. The lower plate 10 extends in the front-rear and left-right directions. Two left and right rails 11 extending in the left-right direction are provided on the upper surface of the lower plate 10. The two left and right rails 11 are provided at the front and rear edges of the lower plate 10, respectively. The mechanism includes a moving plate 13. The moving plate 13 is disposed above the lower plate 10, and one surface (lower surface) of the moving plate 13 faces the upper surface of the lower plate 10. A plurality of sliders 13a are provided on the lower surface of the moving plate 13, and the sliders 13a are slidably connected to the left and right rails 11. The mechanism includes a left-right motor 12. The left-right motor 12 is fixed to the lower plate 10 with its axial direction aligned in the left-right direction. The drive shaft of the left-right motor 12 is connected to the moving plate 13. The moving plate 13 moves left and right when driven by the left-right motor 12.

[0029] The mechanism includes a movable table 15. The movable table 15 is arranged above the movable plate 13. The movable table 15 includes a lower plate portion 15a and a front plate portion 15b protruding at a substantially right angle from one edge of the lower plate portion 15a. The movable table 15 is arranged so that one surface (lower surface) of the lower plate portion 15a faces the upper surface of the movable plate 13 and the front plate portion 15b is located on the front side. A front-rear rail 15c extending in the front-rear direction is provided on the lower surface of the lower plate portion 15a. A plurality of sliders 14 are provided on the upper surface of the movable plate 13. The sliders 14 are slidably connected to the front-rear rails 15c. The mechanism includes a front-rear motor 16. The front-rear motor 16 is fixed to the movable plate 13 with the front-rear direction as its axial direction. The drive shaft of the forward / backward motor 16 is connected to the lower plate portion 15a, and when the forward / backward motor 16 is driven, the lower plate portion 15a, that is, the moving table 15, moves forward / backward along the forward / backward rails 15c.

[0030] The mechanism includes a moving plate 17. The moving plate 17 is disposed in front of the front plate portion 15b. One surface (rear surface) of the moving plate 17 faces the front surface of the front plate portion 15b. An up-down rail 15d extending in the vertical direction is provided in front of the front plate portion 15b. A slider 17a is provided on the rear surface of the moving plate 17. The slider 17a is slidably connected to the up-down rail 15d. The mechanism includes a vertical motor 18. The vertical motor 18 is fixed to the front plate portion 15b with the vertical direction as its axial direction. The drive shaft of the vertical motor 18 is connected to the moving plate 17. When the vertical motor 18 is driven, the moving plate 17 moves in the vertical direction along the up-down rail 15d.

[0031] A tool holding part 19, a first tool driving motor 20a, and a second tool driving motor 20b are fixed to the front surface of the moving plate 17. Driven by the left-right motor 12, the front-rear motor 16, and the up-down motor 18, the moving plate 17, i.e., the tool holding part 19, the first tool driving motor 20a, and the second tool driving motor 20b, moves up and down, forward and backward, left and right.

[0032] The wire processing machine includes a control device 60. The control device 60 includes a control unit 61, a main memory unit 62, an auxiliary memory unit 63, a display unit 64, an operation unit 65, etc. The control unit 61 includes, for example, a processor. The processor includes, for example, a CPU, an MPU, or a GPU. The control unit 61 may also include a logic circuit. The logic circuit includes, for example, an FPGA or an ASIC. The main memory unit 62 includes, for example, a RAM. The auxiliary memory unit 63 includes, for example, a ROM, a rewritable storage medium such as an EEPROM, a Flash ROM, or a hard disk. A control program for controlling the operation of the wire processing machine is stored in the auxiliary memory unit 63. The control unit 61 reads the control program from the auxiliary memory unit 63 to the main memory unit 62 and executes it. The control program may be installed in the auxiliary memory unit 63 from a recording medium 66, for example, an optical disk or a portable flash memory. The control program may also be downloaded from a server to the auxiliary memory unit 63 via a communication network N.

[0033] The display unit 64 has, for example, a display panel. The control unit 61 displays information on the display unit 64 based on a control program. The operation unit 65 has, for example, a keyboard, switches, or a touch panel. The operation unit 65 accepts operations from the user and transmits a signal corresponding to the accepted operation to the control unit 61.

[0034] FIG. 3 is a partially enlarged front cross-sectional view schematically showing the lower end of the tool holding unit 19 to which the spindle tool T4 is attached when the contact / separation unit 90 approaches the pin 87, and FIG. 4 is a bottom view schematically showing the spindle tool T4 attached to the tool holding unit 19 when the contact / separation unit 90 approaches the pin 87. The tool holding unit 19 includes a rotary shaft 50 that rotates about its axis and a sleeve 52 that also rotates about its axis. The rotary shaft 50 is inserted coaxially into the sleeve 52. A gap is provided between the rotary shaft 50 and the sleeve 52. An oil bush 50d is provided in this gap coaxially with the rotary shaft 50 and the sleeve 52. The oil bush 50d prevents the rotation of the rotary shaft 50 from being transmitted to the sleeve 52, and prevents the rotation of the sleeve 52 from being transmitted to the rotary shaft 50. The rotating shaft 50 includes a mounting shaft 50a to which an eccentric rotating unit 80 (described later) is attached, and a rotating cylinder 50c into which the mounting shaft 50a is inserted and which rotates about its axis. A male thread 50b is formed at the lower end of the mounting shaft 50a.

[0035] The spindle tool T4 includes an eccentric rotation unit 80 that is detachably connected to the rotation shaft 50. The eccentric rotation unit 80 is cylindrical with its axial direction extending vertically, and has a female thread 80a formed at its upper end. A roller 81 with its axial direction extending vertically is formed on the underside of the eccentric rotation unit 80. The axis of the roller 81 and the axis of the eccentric rotation unit 80 are offset radially. The male thread 50b of the mounting shaft 50a is threadedly engaged with the female thread 80a. In other words, the roller 81 is positioned offset radially from the center of rotation of the mounting shaft 50a (the center of rotation of the rotation shaft 50).

[0036] The mounting shaft 50a is inserted into the rotatable barrel 50c. The eccentric rotating part 80, which is threaded onto the mounting shaft 50a, is fitted into the tip of the rotatable barrel 50c and is integrated with the rotatable barrel 50c. The rotatable barrel 50c is connected to the first tool driving motor 20a. The rotation of the first tool driving motor 20a rotates the rotatable barrel 50c and the eccentric rotating part 80.

[0037] The lower end of the rotating cylinder 50c and the eccentric rotating portion 80 protrude from the lower end of the sleeve 52. A plurality of female threads 52a are formed radially penetrating the circumferential surface of the lower end of the sleeve 52. A base 82 is connected to the sleeve 52. The base 82 includes a first cylindrical portion 83, a second cylindrical portion 84, and a pin holding portion 85. The axial direction of the first cylindrical portion 83 is the up-down direction. The lower end of the sleeve 52 is inserted into the first cylindrical portion 83. A plurality of through holes 83a are formed radially penetrating the circumferential surface of the first cylindrical portion 83. The through holes 83a are stepped holes. The positions of the female threads 52a correspond to the positions of the through holes 83a. The oil bushing 50d is positioned opposite the female threads 52a. A bolt 100 is inserted into the through hole 83a and connected to the female threads 52a. The head of the bolt 100 engages with the step of the through hole 83a, and the tip of the bolt 100 contacts the oil bushing 50d. Therefore, tightening the bolt 100 does not prevent the rotation of the rotary shaft 50 and the sleeve 52.

[0038] The second cylindrical portion 84 has an axial direction extending in the vertical direction, and has a larger outer diameter and a smaller inner diameter than the first cylindrical portion 83. The second cylindrical portion 84 is coaxially connected to the lower end of the first cylindrical portion 83. A passage 84a is formed at the lower end of the second cylindrical portion 84, penetrating radially. A pin holding portion 85 is fixed to the lower end of the second cylindrical portion 84. The pin holding portion 85 is cylindrical, with the axial direction extending in the vertical direction. The pin holding portion 85 is arranged coaxially with the rotating shaft 50 and the sleeve 52. A recess 85a is formed on the outer periphery of the pin holding portion 85. The recess 85a penetrates in the vertical direction. In a plan view or bottom view, the recess 85a is U-shaped, with the axial center of the pin holding portion 85 at the bottom. A cylindrical pin 87 is held in the center of the pin holding portion 85. The pin 87 protrudes downward from the pin holding portion 85. A ring-shaped first holding groove 87a is formed on the outer circumferential surface of the lower end of the pin 87. A wire 101 is held in the first holding groove 87a.

[0039] The eccentric rotating part 80 is inserted inside the second cylindrical part 84. The eccentric rotating part 80 is rotatable inside the second cylindrical part 84. A slider 86 is provided in the passage 84a, and is movable radially of the second cylindrical part 84. A cylindrical storage chamber 86a with a bottom is formed in the slider 86. The storage chamber 86a is open at the top. The roller 81 is inserted into the storage chamber 86a from above. A stepped internal thread 86a is provided in the slider 86, which penetrates radially through the second cylindrical part 84. A bolt 86b is connected to the internal thread 86a. The head of the bolt 86b engages with the step of the internal thread 86a, and the tip of the shaft of the bolt 86b is disposed within the storage chamber 86a. The roller 81 is disposed between the tip of the shaft of the bolt 86b and a side surface of the storage chamber 86a (the side surface of the storage chamber 86a facing the bolt 86b). That is, the roller 81 is sandwiched between the bolt 86b and the side surface of the storage chamber 86a, and is fixed to the slider 86.

[0040] The recess 85a is located below the portion of the slider 86 opposite the bolt 86b in the radial direction of the second cylindrical portion 84. A contact / separation portion 90 is connected to the portion of the slider 86 opposite the bolt 86b. The contact / separation portion 90 includes a connecting portion 91 that connects to the slider 86 and a holding portion 92 that holds the wire 101. The connecting portion 91 extends vertically, and an upper portion of the connecting portion 91 is connected to the slider 86 by a bolt 100. A lower portion of the connecting portion 91 is inserted inside the recess 85a. The lower end of the connecting portion 91 is located below the pin holding portion 85.

[0041] The holding portion 92 protrudes at approximately a right angle from the lower end of the connecting portion 91. The protruding end of the holding portion 92 faces the lower surface of the pin holding portion 85 in the vertical direction, and faces the pin 87 in the radial direction of the pin holding portion 85. A second holding groove 92a is formed on the upper surface of the protruding end of the holding portion 92. The second holding groove 92a is stepped and open on the upper side and on the pin 87 side. The second holding groove 92a holds the wire 101. The portion of the holding portion 92 where the second holding groove 92a is formed is thinner than other portions.

[0042] A cover 88 is provided on the outside of the first cylindrical portion 83 and the second cylindrical portion 84. The cover 88 is plate-shaped. The rotating shaft 50, the sleeve 52, the first cylindrical portion 83, and the second cylindrical portion 84 are inserted into the cover 88. The cover 88 is removable.

[0043] The eccentric rotation unit 80, roller 81, base 82 (first cylindrical portion 83, second cylindrical portion 84, and pin holding portion 85), slider 86, and contact / separation unit 90 constitute a spindle tool T4. By removing a bolt 100 attached to the first cylindrical portion 83, the spindle tool T4 can be removed from the rotary shaft 50 and sleeve 52, and another tool can be attached to the rotary shaft 50 and sleeve 52 instead of the spindle tool T4. The eccentric rotation unit 80, roller 81, and slider 86 constitute a conversion unit, i.e., an eccentric cam mechanism. The eccentric cam mechanism converts the rotational motion of the rotary shaft 50 into linear motion along the radial direction of the rotary shaft 50. In this embodiment, as an example, the rotational motion of the rotary shaft 50 refers to rotational motion around the up-down axis, and the linear motion along the radial direction of the rotary shaft 50 refers to left-right motion.

[0044] When, for example, a rectangular wire 101 is held by the spindle tool T4, the control unit 61 rotates the first tool driving motor 20a in the forward direction. The eccentric rotation unit 80 rotates, and the roller 81 moves to one end of the passage 84a (the left side in FIGS. 3 and 5). The contact / separation unit 90 approaches the pin 87. The wire 101 is inserted into the first holding groove 87a and the second holding groove 92a, and the wire 101 is held by the contact / separation unit 90 and the pin 87.

[0045] When bending the wire 101, the control unit 61 synchronously rotates the first tool driving motor 20a and the second tool driving motor 20b. The rotating shaft 50 and the sleeve 52 rotate synchronously around their axes, and the contact-separation portion 90 and the pin 87 rotate around the axis of the pin 87. The contact-separation portion 90, particularly the connecting portion 91, contacts the wire 101, and the wire 101 is bent around the pin 87. By repeatedly bending the wire 101, it is possible to manufacture, for example, a transformer coil. By arranging the contact-separation portion 90 at an appropriate position corresponding to the width of the wire 101, unnecessary gaps are prevented from occurring between the wire 101 and the contact-separation portion 90 and between the wire 101 and the pin 87, and the position of the wire 101 can be stabilized. If unnecessary gaps are generated, the coil may be unnecessarily deformed during the bending process, which may result in reduced coil quality and yield.

[0046] When bending wire 101 having low rigidity, wrinkles tend to form on the inside of bent wire 101. By inserting wire 101 into first holding groove 87a of pin 87, it is possible to prevent wrinkles from forming on the inside of bent wire 101.

[0047] As described above, the portion of the holding portion 92 where the second holding groove 92a is formed is thin. Hereinafter, this portion will be referred to as the thin portion. During coil manufacturing, the thin portion is inserted into the gaps (between the wires) of the coil. Because the thin portion is thin, it is possible to prevent the gaps of the coil from widening unnecessarily. Note that if a coil is not manufactured, the portion of the holding portion 92 where the second holding groove 92a is formed may be thick.

[0048] Figure 5 is a partially enlarged front cross-sectional view showing the lower end of the tool holding part 19 to which the spindle tool T4 is attached when the contact / separation part 90 has separated from the pin 87, and Figure 6 is a bottom view showing the spindle tool T4 attached to the tool holding part 19 when the contact / separation part 90 has separated from the pin 87.

[0049] For example, when the control unit 61 releases the wire 101 from the spindle tool T4, it reverses the rotation of the first tool drive motor 20a. The eccentric rotation unit 80 rotates, and the roller 81 moves to the other end of the passage 84a (the right side in FIGS. 3 and 5). The contact / separation unit 90 moves away from the pin 87. The wire 101 is released from the second holding groove 92a, and the contact / separation unit 90 and the pin 87 release the wire 101 from their holding.

[0050] 7A and 7B are explanatory views illustrating a process of extracting the wire rod 101 from the spindle tool T4. As shown in Fig. 7A, in an initial state, the contact / separation portion 90 is located to the left of the pin 87, and the wire rod 101 is held by the contact / separation portion 90 and the pin 87. The wire rod 101 is inserted into the first holding groove 87a and the second holding groove 92a.

[0051] The control unit 61 reverses the first tool drive motor 20a, causing the contact / separation unit 90 to move away from the wire 101 (see FIG. 7B). The control unit 61 drives the left-right motor 12 to move the spindle tool T4 to the right. The wire 101 is released from the first holding groove 87a. That is, the wire 101 is released from the first holding groove 87a and the second holding groove 92a. The wire 101 is positioned between the holding unit 92 and the pin 87, and there is no object below the wire 101 that may interfere with it (see FIG. 7C). The control unit 61 drives the up-down motor 18 to move the spindle tool T4 upward. The spindle tool T4 moves away from the wire 101. In other words, the wire 101 is relatively removed downward from between the holding unit 92 and the pin 87 (see FIG. 7D). According to this embodiment, the wire 101 is released from the holding state of FIG. 7A through three steps (FIGS. 7B to 7D) and then removed from the spindle tool T4.

[0052] FIG. 8 is a reference explanatory diagram illustrating a process of extracting a wire 101 from a spindle tool T4 in another wire processing machine having a configuration different from that of the first embodiment. As shown in FIG. 8A, the other wire processing machine includes a pin holding unit 201, a pin 202 held by the pin holding unit 201, and a roller 203. The pin 202 is cylindrical and passes through the pin holding unit 201 from top to bottom. The lower end of the pin 202 protrudes downward from the lower surface of the pin holding unit 201. A thin disk 202a having a larger diameter than the pin 202 is coaxially provided at the lower end of the pin 202. The upper surface of the disk 202a faces the lower surface of the pin holding unit 201. A stepped holding groove 202b is formed by the upper surface of the disk 202a and the outer peripheral surface of the pin 202. The pin 202 is movable axially, i.e., vertically.

[0053] The roller 203 is disposed adjacent to the pin holding portion 201, and in FIG. 8, is disposed immediately to the left of the pin holding portion 201. The axial direction of the roller 203 is the up-down direction, and the lower end of the roller 203 protrudes downward from the lower surface of the pin holding portion 201. A stepped holding groove 204 is formed by the peripheral surface of the lower end of the roller 203 and the lower surface of the pin holding portion 201. As shown in FIG. 8A, in the initial state, the wire 101 is inserted into and held in the two holding grooves 202b, 204. The wire 101 is held between the upper surface of the disk 202a and the lower surface of the pin holding portion 201.

[0054] The control device of the other wire processing machine moves the pin 202 downward. The wire 101 is released from the holding groove 202b (see FIG. 8B). Next, the control device moves the pin holding unit 201, the pin 202, and the roller 203 upward. The wire 101 is released from the holding groove 204 (see FIG. 8C). Next, the control device moves the pin holding unit 201, the pin 202, and the roller 203 to the right. The wire 101 is positioned below the roller 203 and above the disk 202a (see FIG. 8D). Next, the control device moves the pin holding unit 201, the pin 202, and the roller 203 upward. The wire 101 is positioned below the roller 203 and the disk 202a. In other words, the wire 101 is released downward from the two holding grooves 202b, 204 (see FIG. 8E). As described above, according to the other wire processing machine, the wire 101 is released from the holding state of FIG. 8A through four steps (FIGS. 8B to 8E) to be released from the pin 202 and the roller 203.

[0055] In this way, in the wire processing machine according to the embodiment, the number of steps required to remove the wire 101 from the spindle tool T4 can be reduced compared to other wire processing machines that do not have the contact / separation unit 90.

[0056] In the wire processing machine according to the first embodiment, the rotation of the rotary shaft 50 is controlled to control the distance between the pin 87 and the contact / separation portion 90, and the position of the contact / separation portion 90 is adjusted to a position corresponding to the width of the wire rod 101. Therefore, no unnecessary gap is generated between the wire rod 101 and the contact / separation portion 90 or between the wire rod 101 and the pin 87, and the position of the wire rod 101 can be stabilized. In addition, the rotation of the rotary shaft 50 and the sleeve 52 is controlled to control the movement of the pin 87 around its axis in the contact / separation portion 90, and the wire rod 101 can be bent into a desired shape.

[0057] Furthermore, the wire 101 can be held by inserting it into the first holding groove 87a and the second holding groove 92a.

[0058] Furthermore, the eccentric cam mechanism can realize the movement of the contact / separation portion 90, that is, the movement toward the pin 87 and the movement away from the pin 87.

[0059] (Embodiment 2) The present invention will be described below with reference to the drawings of a wire processing machine showing a second embodiment. Among the components of the second embodiment, the same components as those of the first embodiment are given the same reference numerals, and detailed description thereof will be omitted. FIG. 9 is a partially enlarged front cross-sectional view schematically showing the lower end of the spindle tool T4. The second embodiment has the same configuration as the first embodiment, except that the pin 87 does not have the first holding groove 87a. When bending a wire 101 with high rigidity, wrinkles are unlikely to occur on the inside of the bent wire 101. Therefore, when bending a wire 101 with high rigidity, it is not necessary to provide the first holding groove 87a on the pin 87, as shown in the second embodiment.

[0060] (Embodiment 3) The present invention will be described below with reference to drawings of a wire processing machine showing a third embodiment. Among the components of the third embodiment, the same components as those of the first or second embodiment are given the same reference numerals, and detailed descriptions thereof will be omitted. FIG. 10 is a partially enlarged front cross-sectional view schematically illustrating the lower end of the spindle tool T4. In the third embodiment, the wire is a round wire 102, not a rectangular wire. A second holding groove 92b having an arc-shaped cross section is formed on the protruding end surface of the holding portion 92. The curvature of the second holding groove 92b corresponds to the outer peripheral shape of the round wire 102. By forming the second holding groove 92b to have an arc-shaped cross section, the round wire 102 can be held by the second holding groove 92b, even when the round wire 102 is used as the wire.

[0061] It should be noted that a computer program can be deployed to be executed on a single computer or on multiple computers that are located at one site or distributed across multiple sites and interconnected by a communications network.

[0062] The embodiments disclosed herein are illustrative in all respects and should not be considered limiting. The scope of the present invention is intended to include all modifications within the scope of the claims and the scope equivalent to the claims. The features described in each embodiment can be mutually combined. Furthermore, independent claims and dependent claims described in the claims can be mutually combined in any and all combinations, regardless of the reference format. Furthermore, although the claims use a format in which a claim references two or more other claims (multiple claim format), this is not limiting. A multiple claim (multi-multi claim) that references at least one other multiple claim may also be used. [Explanation of symbols]

[0063] 101 Wire rod 20 Spindle device 50 Rotational Axis 52 Sleeve 60 Control device 80 Eccentric rotating part (conversion part, eccentric cam mechanism) 81 Roller (conversion part, eccentric cam mechanism) 82 base 86 Slider (conversion part, eccentric cam mechanism) 87 pins 87a 1st retaining groove 90 Contact section 92a 2nd retaining groove T4 Spindle Tool

Claims

1. A tool detachable from a sleeve of a spindle device used in a wire processing machine for processing a wire, and a rotary shaft coaxially inserted into the sleeve, a base coupled to the sleeve; a pin provided on the base and arranged coaxially with respect to the rotation shaft; a conversion unit provided on the base and converting the rotational motion of the rotation shaft into linear motion along a radial direction of the rotation shaft; a contact / separation portion that is disposed to face the outer peripheral surface of the pin in the radial direction of the pin and that approaches or moves away from the pin by linear movement converted by the conversion portion; Equipped with a first holding groove for holding the wire rod is formed on the outer peripheral surface of the pin; a second holding groove for holding the wire rod is formed in the contact / separation portion; The wire is configured to be inserted into the first holding groove and the second holding groove. tool.

2. The conversion unit a cylindrical portion having one end connected to the rotary shaft and arranged coaxially with the rotary shaft; a shaft body provided at the other end of the cylindrical portion at a position radially offset from the axis of the rotating shaft, the shaft body having an axis parallel to the axis of the rotating shaft; a slider that is movable in a radial direction of the rotation shaft; and The shaft is connected to the slider, The contact portion is connected to the slider. The tool of claim 1 .

3. A wire processing machine comprising: a spindle device having a sleeve rotatable around an axis and a rotary shaft disposed inside the sleeve; a tool detachable from the rotary shaft; and a control device that controls driving of the sleeve and the rotary shaft, The tool may include: a base coupled to the sleeve; a pin provided on the base and arranged coaxially with respect to the rotation shaft; a conversion unit provided on the base and converting the rotational motion of the rotation shaft into linear motion along a radial direction of the rotation shaft; a contact / separation portion that is disposed to face the outer peripheral surface of the pin in the radial direction of the pin and that approaches or moves away from the pin by linear movement converted by the conversion portion; Equipped with a first holding groove for holding a wire rod is formed on the outer peripheral surface of the pin; a second holding groove for holding the wire rod is formed in the contact / separation portion; The wire is configured to be inserted into the first holding groove and the second holding groove, The control device controlling the rotation of the rotary shaft to control the distance between the pin and the contact / separation portion; The rotation of the rotary shaft and the sleeve is controlled to control the movement of the pin around its axis in the contact and separation portion. Wire processing machine.

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