JP2008212951A - Spring manufacturing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spring manufacturing machine where a plurality of tools are fitted to one tool fitting fixture, and a required tool(s) is selected from the plurality of tools, thus a turret provided with a plurality of tool fixing fixtures and a driving source of the turret are reduced, and the number of the tool fitting fixtures can be reduced. <P>SOLUTION: The front face of a table T2 is provided with rails 31, 31, an operating apparatus storage body T3 provided with a plurality of slider parts slid on the rails 31, 31 is arranged on a Y axis, and the operating apparatus storage body T3 is fitted with a spindle 41, a bending die 52a for right bending, a bending die 52b for left bending along the X-axis direction, thus the operating apparatus storage body T3 is moved to the X-ray direction, and a tool(s) required for the production of a spring is selected. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a spring manufacturing machine in which a plurality of tools for processing a wire rod into a spring can be attached, and the wire rod can be processed by selecting the tool.

  In order to process the wire fed by the wire feed roller into a torsion spring having bent portions at both ends of the coil portion, a plurality of tools such as a bending die for forming the wire into a coil shape and a spindle for bending the wire are used. Needed.

  A conventional spring manufacturing machine has a movable part having three tables movable in three directions of XYZ orthogonal directions, a movable turret, a rotatable turret, a radial turret, and a tool. And a plurality of tool mounting jigs for mounting.

  A driving source is connected to the turret and the movable part via a transmission member, respectively, and the turret and the movable part are moved by driving of each driving source. Moreover, one tool was attached to the tool attachment jig.

In a conventional spring manufacturing machine, by providing a plurality of the tool mounting jigs on the turret, the tool can be selected by rotating the turret as necessary, and a wire rod can be processed into the torsion spring ( Patent Document 1).
JP 2000-61736 A

  In the conventional spring manufacturing machine, a turret and a turret drive source are provided for selecting a tool, and there is a problem that the manufacturing cost of the spring manufacturing machine increases.

  The present invention has been made in view of such circumstances, and a tool mounting jig is arranged on the Y axis (or X axis), and a plurality of tools are placed on the tool mounting jig on the X axis (or Y axis). By mounting along the direction, move the movable part in the X-axis (or Y-axis) direction, select the necessary tools from multiple tools attached to one tool mounting jig, reduce the turret It is another object of the present invention to provide a spring manufacturing machine that can reduce the number of drive sources and tool mounting jigs.

  The tool mounting jig is provided with a bending die for forming a wire into a coil shape and a spindle for bending the wire, so that the coil portion is formed using the bending die and the bending portion is formed using the spindle. Then, it aims at providing the spring manufacturing machine which can manufacture a torsion spring.

  Further, the wire feed roller is supported by a housing, and a drive source is connected to the housing via a transmission member, thereby driving the drive source and rotating the wire feed roller around the axis. The wire rod is rotated, the portion processed into the spring of the wire rod is taken out of the wire processing space where the wire rod is processed, and the tool or the cutter cutting the wire rod against the portion processed into the spring is avoided. It is an object of the present invention to provide a spring manufacturing machine that can perform the above.

  In addition, the movable unit is configured to have three tables arranged along the XYZ orthogonal three-axis directions, and three driving sources are connected to each table via a transmission member, thereby driving each driving source. It is an object of the present invention to provide a spring manufacturing machine capable of positioning a tool by moving each table in each axial direction and moving the movable portion in the three axial directions.

  In the spring manufacturing machine according to the present invention, the wire feed roller provided on the back side of the front wall in which the through hole is opened, and the movement range of the wire fed to the front side through the through hole by the wire feed roller are Z In a spring manufacturing machine, comprising: a movable part that moves in an XYZ orthogonal three-axis direction as an axis; and a tool attachment jig that is provided on the movable part and attaches a tool for processing a wire rod into a spring. A mounting jig is arranged on the Y-axis (or X-axis) on the front wall, and the Z-axis side portion of the tool mounting jig is a plurality of tools along the X-axis (or Y-axis) direction. It is characterized in that it can be attached.

  In the present invention, by attaching a plurality of tools to the Z-axis side portion along the X-axis (or Y-axis) direction, the movable part is moved in the X-axis (or Y-axis) direction. A necessary tool is selected from a plurality of tools mounted on one tool mounting jig, and the wire is processed into a spring.

  The spring manufacturing machine according to the present invention is characterized in that the Z-axis side portion can be attached with a bending die for forming a wire into a coil shape and a spindle for bending the wire.

  In the present invention, by providing a bending die for forming the wire into a coil shape and a spindle for bending the wire on the Z-axis side portion, the coil portion is formed using the bending die, and the spindle is mounted. A torsion spring is manufactured by forming a bent portion using the same.

  In the spring manufacturing machine according to the present invention, the wire feed roller is supported by a housing, and a drive source is connected to the housing via a transmission member, and the wire feed roller is driven by the drive source. Is rotated around the axis and the wire is rotated.

  In the present invention, the wire feed roller is supported by a housing, and a drive source is connected to the housing via a transmission member to drive the drive source, and the wire feed roller is moved to the shaft. The wire rod is rotated around the core to rotate the wire rod, and the portion of the wire rod that is processed into a spring is taken out of the wire rod processing space where the wire rod is processed.

  In the spring manufacturing machine according to the present invention, the movable portion has three tables arranged along the XYZ orthogonal triaxial directions, and three driving sources are respectively connected to the tables via a transmission member. It is connected, each table is moved by driving each drive source, and the movable part is moved in the XYZ orthogonal three-axis directions.

  In the present invention, the movable part is configured to have three tables arranged along the XYZ orthogonal three-axis directions, and three drive sources are connected to each table via a transmission member. Then, each table is moved in each axial direction by driving each drive source, and the movable portion is moved in the three axial directions, thereby positioning the tool.

  In the spring manufacturing machine according to the present invention, by attaching a plurality of tools to the Z-axis side portion along the X-axis (or Y-axis) direction, the movable part is moved in the X-axis (or Y-axis) direction. It is possible to move and select a necessary tool from a plurality of tools attached to one tool mounting jig to reduce the number of turrets and the number of drive sources and tool mounting jigs.

  In the spring manufacturing machine according to the present invention, a bending die for forming a wire rod into a coil shape and a spindle for bending the wire rod are provided on the Z-axis side portion, thereby forming the coil portion using the bending die. Further, the torsion spring can be manufactured by forming a bent portion using a spindle.

  Further, in the spring manufacturing machine according to the present invention, the wire feed roller is supported by a housing, and the drive source is driven by connecting the drive source to the housing via a transmission member. Rotating the roller around the shaft core to rotate the wire rod, and taking the portion processed into the spring of the wire rod from the wire processing space where the wire rod is processed, and the tool or wire rod to the portion processed into the spring Can be avoided.

  Further, in the spring manufacturing machine according to the present invention, the movable part is configured to have three tables arranged along the XYZ orthogonal three-axis directions, and three driving sources are connected to each table via a transmission member. By doing so, each table can be moved in each axial direction by driving each driving source, and the movable portion can be moved in the three axial directions, thereby positioning the tool.

  Hereinafter, a spring manufacturing machine according to the present invention will be described in detail with reference to the drawings illustrating embodiments. 1 is a schematic front view showing a spring manufacturing machine according to the embodiment, FIG. 2 is a schematic right side view, FIG. 3 is a schematic plan view, FIG. 4 is a spindle attached to the spring manufacturing machine, and a right-handed bending die. FIG. 6 is a schematic bottom view showing a left-handed bending die.

  In the figure, reference numeral 1 denotes a base of a spring manufacturing machine, and a front wall 2 is provided above the base 1. On the rear side of the front wall 2, the wire rod is narrowly pressed between two rollers 3a and 3a arranged above and below, the upper roller 3a is rotated clockwise, and the lower roller 3a is rotated counterclockwise. Two pairs of wire feed rollers 3 and 3 which are rotated and fed to the front side are provided. A through hole 4 (see FIG. 5) is formed in a portion of the front wall 2 facing the wire rod feed rollers 3 and 3, and a wire rod guide 5 for guiding the wire rod is provided in front of the through hole 4. .

  The base 1 has a box shape, and accommodates a bobbin (not shown) around which the wire supplied to the wire feed rollers 3 and 3 is wound. The wire rod is supplied from the bobbin to the wire rod feed rollers 3 and 3 via a capstern (not shown), and is guided by the wire rod feed rollers 3 and 3 through the through hole 4 to the wire rod guide 5. Is sent to the wire processing space 6 at the outlet.

  A top plate 7 is provided on the upper side of the front wall 2, and a movable portion T having tables T1 and T2, which will be described later, and an actuator housing T3 is provided on the top plate 7. A block-shaped motor fixing portion 8 for fixing a servo motor M1 described later is provided at the rear of the top surface of the top plate 7. The motor fixing portion 8 has a fitting hole formed in the center thereof that penetrates in the front-rear direction and fits the servo motor M1. Two rails 9 and 9 are provided along the left and right ends of the top surface of the top plate 7, respectively.

  A table T1 of the movable part T is arranged on the upper side of the rails 9, 9, and four sliders 10, 10,... That slide on the rails 9, 9 at the four corners of the lower surface of the table T1.・ ・ Is provided. The sliders 10, 10... Are substantially rectangular parallelepiped, and grooves are formed on the surfaces facing the rails 9, 9, and the rails 9, 9 are fitted into the grooves and slide. It has become. A support plate 11 that supports a rail fixing plate 14 to be described later is connected to the front end portion of the table T1 so as to stand up vertically with respect to the table T1. At the center of the rear end portion of the upper surface of the table T1, a nut portion 12 for screwing a male screw 13 described later is provided. The table T1 and the support plate 11 have the axis of the wire as the Z axis, the horizontal axis perpendicular to the Z axis as the X axis, and the vertical axis perpendicular to the Z axis and the X axis as the Y axis. In the three XYZ orthogonal axes, the position is above the Z axis and on the Y axis.

  A servo motor M1 capable of rotating in the forward and reverse directions is fitted and fixed in the fitting hole of the motor fixing portion 8, and a male screw 13 is connected to the rotating shaft of the servo motor M1. The male screw 13 is screwed into the nut portion 12, and a ball (not shown) is fitted to the groove portion of the male screw 13 and the nut portion 12 so as to be able to roll, thereby constituting a ball screw mechanism.

  The forward / reverse rotation of the servo motor M1 is converted into a linear motion by the male screw 13 and the nut portion 12, and when the servo motor M1 rotates forward, the sliders 10, 10,. 9, the table T1 and the support plate 11 move to the front side along the Z-axis direction, and move to the rear side when the servo motor M1 rotates in the reverse direction.

  A rail fixing plate 14 to which the two rails 21 and 21 are fixed is overlapped and attached from the center of the front surface of the support plate 11 to the lower portion, and the rail fixing plate 14 is supported vertically. On the front surface of the rail fixing plate 14, the rails 21 and 21 are fixed along the left and right ends of the rail fixing plate 14, respectively. A block-shaped motor fixing portion 22 for fixing a servo motor M2 to be described later is provided on the upper portion in front of the support plate 11. The motor fixing portion 22 is formed with a fitting hole in the center that penetrates in the vertical direction and engages the servo motor M2.

  A table T2 of the movable part T is arranged on the front side of the rails 21, 21. At the four corners on the back of the table T2, the rails 21, 21 are placed on the rails 21, 21 at positions facing the rails 21, 21. Four sliding elements 23, 23,... Are provided. The sliders 23, 23,... Have a substantially rectangular parallelepiped shape, and a groove is formed on the surface facing the rails 21, 21, and the rails 21, 21 are fitted into the grooves and slide. It has become. In the upper center of the back surface of the table T2, a nut portion 24 for screwing a male screw 25 described later is provided.

  A servo motor M2 capable of rotating in the forward and reverse directions is fitted and fixed in the fitting hole of the motor fixing portion 22, and a male screw 25 is connected to the rotating shaft of the servo motor M2. The male screw 25 is screwed into the nut portion 24, and a ball (not shown) is fitted in a groove portion of the male screw 25 and the nut portion 24 so as to be able to roll, thereby constituting a ball screw mechanism.

  The forward / reverse rotation of the servo motor M2 is converted into a linear motion by the male screw 25 and the nut portion 24. When the servo motor M2 rotates forward, the sliders 23, 23,. 21, the table T2 moves downward along the Y-axis direction, and moves upward when the servo motor M2 rotates in the reverse direction.

  On the front surface of the table T2, two rails 31, 31 are fixed along the upper and lower ends of the table T2. A block-shaped motor fixing portion 32 for fixing a servo motor M3, which will be described later, is provided at the center on the right side of the front surface. In the motor fixing portion 32, a fitting hole that penetrates in the left-right direction and fits the servo motor M3 is formed in the center.

  On the front side of the rails 31, 31, an actuator housing T3 for the movable part T is provided. The actuating device accommodating body T3 includes a square-shaped accommodating portion T31 for accommodating a spindle actuating device 40 to be described later, and the accommodating portion T31 is a cylindrical accommodating chamber formed by penetrating an axial center portion. Have The actuating device housing T3 includes two elongate flange portions T32 and T32 which are continuous along the longitudinal both sides of the entire surface of the housing portion T31, and the one surface faces the front side of the rails 31 and 31. Are arranged.

  Four sliders 33, 33,... Sliding on the rails 31, 31 are provided at both ends of the flanges T32, T32 at positions facing the rails 31, 31. The sliders 33, 33,... Have a substantially rectangular parallelepiped shape, and grooves are formed on the surfaces facing the rails 31, 31, and the rails 31, 31 are fitted into the grooves and slide. It has become. The flange T32 on the motor fixing part 32 side is provided with a nut part 34 for screwing a male screw 35 described later.

  A servo motor M3 capable of forward and reverse rotation is fitted and fixed in the fitting hole of the motor fixing portion 32, and a male screw 35 is connected to the rotation shaft of the servo motor M3. The male screw 35 is screwed into the nut portion 34, and a ball (not shown) is fitted in a groove portion of the male screw 35 and the nut portion 34 so as to be able to roll, thereby constituting a ball screw mechanism.

  The forward / reverse rotation of the servo motor M3 is converted into a linear motion by the male screw 35 and the nut portion 34. When the servo motor M3 rotates forward, the sliders 33, 33,. 31, the actuator device body T3 moves to the right side toward the front wall 2 along the X-axis direction, and moves to the left side when the servo motor M3 rotates in the reverse direction.

  A cylindrical spindle actuator 40 is accommodated in the accommodating chamber of the accommodating portion T31. The spindle operating device 40 includes an operating device main body 40a and a spindle mounting portion 40b provided at the lower end of the operating device main body, and the spindle mounting portion 40b extends from the accommodating portion T31, A spindle 41 is attached to the spindle attachment portion 40b. A servo motor M4 is connected to the side surface of the spindle operating device 40.

  The spindle 41 includes an inner cylinder 41a and an outer sleeve 41c provided around the inner cylinder 41a, and a linear groove 41b that engages a wire rod is formed on the tip surface of the inner cylinder 41a. A protrusion 41d for bending the wire is provided at the tip of the outer sleeve 41c. The outer sleeve 41c rotates counterclockwise when the servo motor M4 rotates forward, and the outer sleeve 41c rotates clockwise when the servo motor M4 rotates backward.

  A support cylinder 50 for supporting a bending die attachment jig 51 is disposed around the spindle attachment portion 40b, and the support cylinder 50 is fixed to the actuator main body 40a. Two bending die mounting jigs 51, 51 are supported on the left and right sides of the support cylinder 50. A right-handed bending die 52 a is attached to the right-hand bending die attachment jig 51, and a left-handed bending die 52 b is attached to the left-hand bending die attachment jig 51.

  When the spindle 41 is mounted on the spindle mounting portion 40b and the right-handed bending die 52a and the left-handed bending die 52b are mounted on the two bending die mounting jigs 51 and 51, the spindle 41, the right-handed bending die 52a and the left The winding bending die 52b is disposed along the X-axis direction.

  On the front wall 2, two cutter mounting slides 65, 65 are provided on both the left and right sides of the wire guide 5, and the cutter mounting slides 65, 65 are located on the X axis. Two cutter motors M5 and M5 are connected to each cutter mounting slide 65 and 65, respectively, and the wire guide 5 side portion of each cutter mounting slide 65 and 65 makes it possible to mount two cutters 66 and 66, respectively. It is. As the servo motors M5 and M5 rotate, the cutter mounting slides 65 and 65 move to the left and right, and the wire rod fed into the wire rod machining space 6 is sandwiched between the two cutters 66 and 66 and cut.

  FIG. 5 is a schematic enlarged cross-sectional view showing a main part configuration around the wire feed roller 3.

  An intermediate wall 80 is provided behind the front wall 2, and a back wall 81 is provided behind the intermediate wall 80. A penetrating intermediate hole 82 is formed in the intermediate wall 80, and a hole 81 a is formed in the back wall 81. The through hole 4, the intermediate hole 82, and the hole 81a are centered on the Z axis. Between the front wall 2 and the intermediate wall 80, there are provided a plurality of transmission gears (not shown) that transmit the rotation of a servo motor M6, which will be described later, to the wire feed rollers 3, 3. It is housed in a housing 70.

  Two windows 70 a and 70 a are opened on the side surface of the housing 70. A pair of upper and lower shafts that transmit the rotation of the transmission gear extends from the windows 70 a and 70 a to the outside of the housing 70 for an appropriate length. The rollers 3 a, 3 a,... Are connected to the extended end portions of the respective shafts, and the wire rod feeding rollers 3, 3 are arranged along the side surface of the housing 70. Further, three guide blocks 71, 71,... Provided with a groove for guiding the wire on the side surface are provided between the wire feed rollers 3, 3 on the upstream side and the downstream side, A fitting hole 70c that fits into a protrusion 92b described later is formed on the back surface.

  An annular gear 74 having a fitting hole 74a into which a passage cylinder 75 described later is fitted is provided at the rear of the casing 70. A rear window 70b is provided at the rear side of the side surface of the housing 70, and the annular gear 74 is exposed from the rear window 70b. The annular gear 74 is arranged with the Z axis as a central axis. The annular gear 74 meshes with the transmission gear, and the rotation of the annular gear 74 is transmitted to the transmission gear.

  One end portion of the passage cylinder 75 through which the wire passes is inserted into the insertion hole 74a, the passage cylinder 75 is inserted into the intermediate hole 82, and the other end portion of the passage cylinder 75 has a bearing in the hole portion 81a. It is inserted through.

  Between the intermediate wall 80 and the back wall 81, a driven gear 91 that meshes with the main driving gear 90 is fitted around the other end portion of the passage cylinder 75. On the upper side of the passage cylinder 75, a servo motor M6 is attached to the back wall 81. A main driving gear 90 is fitted to the shaft core of the servo motor M6, and the main driving gear 90 meshes with the driven gear 91. Yes. The rotation of the servo motor M6 is transmitted to the driven gear 91 via the main driving gear 90, so that the passage cylinder 75 rotates.

  The passage cylinder 75 is rotated by the rotation of the servo motor M6, the annular gear 74 fitted with the passage cylinder 75 is rotated, and the wire feeding roller 3 is rotated through the transmission gear. The configuration is such that the wire is sent out.

  A hub 92 for transmitting the rotation of a servo motor M7, which will be described later, to the housing 70 is provided on the back surface of the housing 70. The hub 92 has a cylindrical portion 92a, a flange portion 92b connected to one end portion of the cylindrical portion 92a, and is raised from the flange portion 92b to the opposite side of the cylindrical portion 92a. And a fitting portion 92c fitted to 70c. The fitting portion 92c is fitted into the fitting hole 70c, and the flange portion 92b is brought into close contact with the back surface of the casing 70, and the cylindrical portion 92a is rotatable with respect to the passage cylinder 75 via a bearing. And is inserted through the intermediate hole 82.

  A driven gear 94 is provided on the cylindrical portion 92a. The driven gear 94 has a gear part and a boss part protruding to one surface side. The boss portion is fitted on the cylindrical portion 92a and is rotatably supported by the intermediate hole 82 via a bearing. The gear portion is disposed near the intermediate wall 80 between the intermediate wall 80 and the back wall 81.

  A servo motor M7 is attached to the back wall 81 below the passage cylinder 75, and a main driving gear 93 that meshes with the driven gear 94 is fitted to the axis of the servo motor M7. The rotation of the servo motor M7 is transmitted to the driven gear 94 through the main driving gear 93, the casing 70 rotates about the Z axis, the wire rod feeding roller 3 rotates, and the wire rod rotates about the Z axis. I have to do it.

  Next, the operation of the spring manufacturing machine when manufacturing the torsion spring will be described. FIG. 6 is a block diagram showing a configuration of a control circuit for controlling the rotation of each servo motor and a drive circuit of each servo motor connected to the control circuit, and FIGS. 7 to 9 are flowcharts showing a manufacturing process of the torsion spring. 10 to 18 are explanatory views for explaining the movement of the spindle 41, the right-handed bending die 52a, and the left-handed bending die 52b.

  The spring manufacturing machine includes an operation unit 110, and by the operation unit 110, the length of the right leg, the length of the right-handed coil, the length of the intermediate part, the length of the left-handed coil, and the left leg Information necessary for manufacturing the spring, such as the dimensions of the torsion spring to be manufactured such as the length of the part, the type of tool used for manufacturing the torsion spring, and the mounting position of the tool, is input. The operation unit 110 includes a switch (not shown) for inputting start and stop of spring manufacture. A control circuit 100 for controlling forward / reverse rotation of each of the servo motors M1 to M7 is connected to the operation unit 110. The control circuit 100 includes a CPU that outputs a rotation signal to a drive circuit, which will be described later, and servo motors M1 to M1. It has a ROM that stores a control program for controlling forward and reverse rotation of M7, a RAM that temporarily stores information input from the operation unit, and the like. A table T1 driving circuit 101, a table T2 driving circuit 102, a container driving circuit 103, a sleeve driving circuit 104, a cutter driving circuit 105, a roller driving circuit 106, and a housing driving circuit 107 are connected to the control circuit 100. The servo motors M1 to M7 are connected to the drive circuits 101 to 107, respectively, a rotation signal is output from the control circuit 100 to the drive circuits 101 to 107, and a predetermined number of the servo motors M1 to M7 are output. It is configured to rotate.

  The spindle 41 is attached to the spindle attachment portion 40b, and the left-handed bending die 52b and the right-handed bending die 52a are attached to the left and right bending die attachment jigs 51 and 51, respectively.

  The control circuit 100 determines whether or not all information necessary for manufacturing the spring, such as the dimensions of the torsion spring, the type of tool used for manufacturing the torsion spring, and the mounting position of the tool, has been input by the operation unit 110 ( Step S1). When all the information necessary for manufacturing the spring has not been input (step S1: NO), the process returns to step S1. When all the information necessary for manufacturing the spring has been input (step S1: YES), it is determined whether or not the switch is on (step S2). When the switch is not turned on (step S2: NO), the process returns to step S2. When the switch is on (step S2: YES), a rotation signal is output from the control circuit 100 to the table T1 drive circuit 101, the table T2 drive circuit 102, and the container drive circuit 103, and the servo motors M1 to M3 are activated. The spindle 41, the right-handed bending die 52a, and the left-handed bending die 52b are moved in the XYZ directions, and are disposed almost directly above the wire guide 5 (step S3).

  Then, a rotation signal is output from the control circuit 100 to the roller drive circuit 106, the servo motor M6 is rotated a predetermined number of times, the wire is sent to the wire processing space 6, and a straight right leg is formed (step S4, FIG. 10). reference).

  Next, a reverse rotation signal is output from the control circuit 100 to the container drive circuit 103, the servo motor M3 is rotated in reverse by a predetermined number, and the actuator device container T3 is moved in the left direction along the X-axis direction. The winding bending die 52a is arranged right above the wire, the right winding bending die 52a is selected (step S5), a positive rotation signal is output to the table T2 drive circuit 102, and the servo motor M2 is set to a predetermined number of positive. The table T2 is rotated to move downward along the Y-axis direction, the right-handed bending die 52a is brought into contact with the wire (step S6), and the wire is bent downward. Then, a rotation signal is output from the control circuit 100 to the roller driving circuit 106, the servo motor M6 is rotated a predetermined number of times, the wire is sent to the wire processing space 6, and the wire is formed in the right-handed bending die 52a. To bend and deform to form a right-handed coil portion (see step S7, FIG. 11).

  When the right-handed coil portion is formed, a reverse rotation signal is output from the control circuit 100 to the table T2 drive circuit 102, the servomotor M2 is reversely rotated by a predetermined number, and the right-handed bending die 52a is moved upward along the Y-axis direction. To move away from the wire (step S8). Then, a rotation signal is output from the control circuit 100 to the roller drive circuit 106, the servo motor M6 is rotated a predetermined number of times, and the wire forming the right intermediate portion is sent out (see step S9, FIG. 12).

  When the wire forming the right intermediate portion is sent out, a positive rotation signal is output from the control circuit 100 to the container driving circuit 103, and the servo motor M3 is rotated in the positive direction by a predetermined number to accommodate the operating device along the X-axis direction. The body T3 is moved in the right direction, the spindle 41 is disposed right above the wire, the spindle 41 is selected (step S10), a positive rotation signal is output to the table T2 drive circuit 102, and a predetermined number of servo motors M2 are output. By rotating forward, the spindle 41 is moved downward along the Y-axis direction, and the wire rod is engaged with the groove portion 41b in the inner cylinder 41a (step S11). Then, a positive rotation signal is output from the control circuit 100 to the sleeve drive circuit 104, the servomotor M4 is rotated forward by a predetermined number, the outer sleeve 41c is rotated counterclockwise, and the protrusion 41d is brought into contact with the wire, The wire is bent to the right at the corner at the end of the groove 41b (see step S12, FIG. 13).

  When the wire is bent, a reverse rotation signal is output from the control circuit 100 to the sleeve drive circuit 104, the servo motor M4 is rotated in reverse by a predetermined number, the outer sleeve 41c is rotated clockwise, and the protrusion 41d is separated from the wire. (Step S13), a rotation signal is output from the control circuit 100 to the roller drive circuit 106, the servo motor M6 is rotated a predetermined number of times, and a wire forming the left intermediate portion is sent along the groove 41b (Step S14). FIG. 14).

  When the wire forming the left intermediate portion is sent out, a positive rotation signal is output from the control circuit 100 to the sleeve drive circuit 104, the servomotor M4 is rotated forward by a predetermined number of times, and the outer sleeve 41c is rotated counterclockwise. The protrusion 41d is brought into contact with the wire, and the wire is bent to the right at the corner of the groove 41b to form a U-shaped intermediate portion (see step S15 and FIG. 15).

  When the intermediate portion is formed, a reverse rotation signal is output from the control circuit 100 to the table T2 drive circuit 102, the servo motor M2 is rotated in reverse by a predetermined number, and the spindle 41 is moved upward along the Y-axis direction. The groove 41b is separated from the wire (step S16). Then, a positive rotation signal is output to the container driving circuit 103, the servo motor M3 is rotated a predetermined number of times, the actuator device T3 is moved in the right direction along the X-axis direction, and the left-handed bending die 52b is arranged right above the wire, the left-handed bending die 52b is selected (step S17), a positive rotation signal is output from the control circuit 100 to the table T2 drive circuit 102, and the servo motor M2 is rotated forward. The left-handed bending die 52b is moved downward along the Y-axis direction, the left-handed bending die 52b is brought into contact with the wire (step S18), and the wire is bent downward. A rotation signal is output to the drive circuit 106, the servo motor M6 is rotated a predetermined number of times to send out the wire, the wire is brought into contact with a groove formed in the left-handed bending die 52b, and the left-handed coil is deformed. Forming part That (step S19, see FIG. 16).

  When the left-handed coil portion is formed, a reverse rotation signal is output from the control circuit 100 to the table T2 drive circuit 102, the servomotor M2 is rotated reversely by a predetermined number, and the left-handed bending die 52b is moved along the Y-axis direction. The left turn bending die 52b is moved away from the wire (step S20), a rotation signal is output from the control circuit 100 to the roller drive circuit 106, the servo motor M6 is rotated a predetermined number of times, and the wire is sent out. Then, a straight left leg is formed (see step S21, FIG. 17).

  When the left leg is formed, a positive rotation signal is output from the control circuit 100 to the housing drive circuit 107, the servomotor M7 is rotated a predetermined number of times to twist the wire counterclockwise (step S22), and the right The winding coil part is rotated and moved downward, is taken out of the wire processing space 6, a rotation signal is output from the control circuit 100 to the cutter driving circuit 105, the servo motors M5 and M5 are rotated a predetermined number of times, and the two cutters 66 are output. , 66 are moved to the wire processing space 6 to cut the wire to form a torsion spring (see step S23, FIG. 18).

  Then, a reverse rotation signal is output from the control circuit 100 to the casing drive circuit 107, the servo motor M7 is reversely rotated a predetermined number of times to rotate the wire rod clockwise, and the twist of the wire rod is returned (step S24). Next, the control circuit 100 determines whether or not the switch is off (step S25). When the switch is not turned off (step S25: NO), the process returns to step S3. When the switch is off (step S25: YES), the torsion spring manufacturing operation is terminated. The right-handed bending die 52a and the left-handed bending die 52b are not shown in some drawings.

  In the spring manufacturing machine according to the embodiment, the actuator housing T3 that moves in the XYZ orthogonal triaxial directions with the axis of the wire fed by the wire feed roller 3 as the Z axis is disposed on the Y axis, and the spindle The actuating device 40 is provided with two bending die attachment jigs 51, 51, the spindle 41 is attached to the spindle attachment portion 40b, and the right-handed bending die 52a and the left-handed bending die are attached to the bending die attachment jigs 51, 51. 52b is attached, and the spindle 41, the right-handed bending die 52a, and the left-handed bending die 52b are arranged along the X-axis direction to move the operating device housing T3 in the X-axis direction. The necessary tools are selected from the spindle 41, the right-handed bending die 52a, and the left-handed bending die 52b that are attached to the two tool mounting jigs. Reduce the door, also it is possible to reduce the number of servo motors and the tool mounting fixture.

  Further, a torsion spring can be manufactured by forming a coil portion using the right-handed bending die 52a and the left-handed bending die 52b and forming a bent portion using the spindle 41.

  Further, the wire rod feed roller 3 is supported by a housing 70, and the servo motor M7 is connected to the housing 70 via a transmission member to drive the servo motor M7, and the wire rod feed roller 3 is moved to the shaft. The wire rod is rotated by rotating it around the core, and the portion of the wire rod processed into the torsion spring is taken out of the wire rod processing space 6 to avoid contact of the cutter 66 with the portion processed into the torsion spring. be able to.

  Further, the tables T1, T2 and the actuator housing body T3 are arranged along the XYZ orthogonal three-axis directions, and the three servo motors M1, M2, M3 are arranged on the tables T1, T2 and the actuator housing body T3 via the transmission member. By connecting them, the spindle mounting part 40b and the two bending die mounting jigs 51, 51 are moved in the XYZ orthogonal three-axis directions by driving each servo motor, and the spindle 41, right-handed and left-handed bending The dies 52a and 52b can be positioned.

  The actuator housing T3 is disposed on the X axis, and two bending die mounting jigs 51 and 51 are provided on the spindle actuator 40 accommodated in the actuator housing T3. Winding and left-handed bending dies 52a and 52b may be attached along the Y-axis direction, and the spindle 41 may be attached to the spindle attachment portion 40b.

It is a typical front view which shows the spring manufacturing machine which concerns on embodiment. It is a typical right view which shows the spring manufacturing machine which concerns on embodiment. It is a typical top view which shows the spring manufacturing machine which concerns on embodiment. It is a typical bottom view showing a spindle, a right-handed bending die, and a left-handed bending die attached to the spring manufacturing machine according to the embodiment. It is a typical expanded sectional view which shows the principal part structure around the wire rod feeding roller of the spring manufacturing machine which concerns on embodiment. It is a block diagram which shows the structure of the drive circuit of each servomotor connected to the control circuit which controls rotation of each servomotor of the spring manufacturing machine which concerns on embodiment, and a control circuit. It is a flowchart which shows the manufacturing process of the torsion spring which uses the spring manufacturing machine which concerns on embodiment. It is a flowchart which shows the manufacturing process of the torsion spring which uses the spring manufacturing machine which concerns on embodiment. It is a flowchart which shows the manufacturing process of the torsion spring which uses the spring manufacturing machine which concerns on embodiment. It is explanatory drawing explaining the movement of the spindle of the spring manufacturing machine which concerns on embodiment, the right-handed bending die, and the left-handed bending die. It is explanatory drawing explaining the movement of the spindle of the spring manufacturing machine which concerns on embodiment, the right-handed bending die, and the left-handed bending die. It is explanatory drawing explaining the movement of the spindle of the spring manufacturing machine which concerns on embodiment, the right-handed bending die, and the left-handed bending die. It is explanatory drawing explaining the movement of the spindle of the spring manufacturing machine which concerns on embodiment, the right-handed bending die, and the left-handed bending die. It is explanatory drawing explaining the movement of the spindle of the spring manufacturing machine which concerns on embodiment, the right-handed bending die, and the left-handed bending die. It is explanatory drawing explaining the movement of the spindle of the spring manufacturing machine which concerns on embodiment, the right-handed bending die, and the left-handed bending die. It is explanatory drawing explaining the movement of the spindle of the spring manufacturing machine which concerns on embodiment, the right-handed bending die, and the left-handed bending die. It is explanatory drawing explaining the movement of the spindle of the spring manufacturing machine which concerns on embodiment, the right-handed bending die, and the left-handed bending die. It is explanatory drawing explaining the movement of the spindle of the spring manufacturing machine which concerns on embodiment, the right-handed bending die, and the left-handed bending die.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Front wall 3 Wire feed roller 5 Wire guide 6 Wire processing space 9, 21, 31 Rail 10, 23, 33 Slider 40 Spindle actuator 40b Spindle attachment part 51 Bending die attachment jig 70 Case 74 Annular gear 75 Passage Cylindrical 90, 93 Main drive gear 91, 94 Driven gear 92 Hub T1, T2 Table T3 Actuator housing (table)
M1 to 7 Servo motor

Claims (4)

A wire feed roller provided on the back side of the front wall in which the through hole is opened, and a movement range of the wire fed to the front side through the through hole by the wire feed roller in the XYZ orthogonal triaxial directions with the Z axis as the Z axis In a spring manufacturing machine including a movable part that moves, and a tool attachment jig that is provided in the movable part and attaches a tool for processing a wire into a spring,
The movable part and the tool attachment jig are arranged on the Y axis (or X axis) on the front wall, and the Z axis side portion of the tool attachment jig is the X axis (or Y axis). A spring making machine characterized in that a plurality of tools can be attached along a direction.   2. The spring manufacturing machine according to claim 1, wherein the Z-axis side portion can be attached with a bending die for forming the wire into a coil shape and a spindle for bending the wire. 3.   The wire feed roller is supported by a housing, a drive source is connected to the housing via a transmission member, and the wire feed roller rotates around the axis by driving the drive source, The spring manufacturing machine according to claim 1 or 2, wherein the wire is rotated.   The movable portion has three tables arranged along the XYZ orthogonal three-axis directions, and three driving sources are connected to each table via a transmission member. 4. The spring manufacturing machine according to claim 1, wherein each table is moved by driving, and the movable portion is moved in an XYZ orthogonal triaxial direction. 5.

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