JP2007000985A - Fixture and manufacturing method for workpiece and sewing machine head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately position a sewing machine head on a base while ensuring a wide work area without causing quality deterioration such as deformation and damage or the like. <P>SOLUTION: The fixture 1 positions the sewing machine head to be machined as a workpiece. A Z-axis movable reference pin 11 and a Z-axis fixed reference pin 21 are provided opposing to each other on a fixture base 60, and the Z-axis movable reference pin 11 is moved to the Z-axis direction by a Z-axis slider 10. A first X-axis movable reference pin 31 and a second X-axis movable reference pin 32 are provided in parallel on the fixture base 60 in the X-axis direction, and moved to the X-axis direction by an X-axis slider 30. The sewing machine head mounted on the fixture base 60 is pivotally supported by the Z-axis movable reference pin 11 and the Z-axis fixed reference pin 21 in the Z-axis direction, is pivotally supported by the first X-axis movable pin 31 and the second X-axis movable pin 32 in the Z-axis direction, and is machined by a work head 90. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a jig for positioning and processing various workpieces on a base, a method for manufacturing a workpiece, and a method for manufacturing a sewing head, and more particularly, manufacturing a sewing head subjected to arbitrary processing. About things.

  Conventionally, in a manufacturing process of a sewing machine, a sewing machine head constituting a head of the sewing machine, which is a workpiece, is fixed with a jig and processed using an NC machine or the like. The jig is required to accurately position the workpiece on the base in order to accurately process the workpiece. For example, there is an automatic machine jig in which a locate pin (positioning pin) is inserted into a reference hole formed in a workpiece, and then the workpiece is pressed by a clamper to accurately position the workpiece. It is known (see, for example, Patent Document 1).

Similarly, when machining a sewing head with an NC machine or the like, a positioning pin is inserted into a reference hole formed on the face plate side of the sewing head in the vertical direction and pressed with a clamp, and the pulley side of the sewing head is used. It is known that the sewing machine head is fixed on the base by gripping and pressing it horizontally with a clamp.
Japanese Utility Model Publication No. 55-120440

  However, in the above prior art, since a strong pressing force is applied to the sewing machine head, which is a workpiece, in the vertical and horizontal directions, distortion occurs in a portion where the pressing force is concentrated or a portion where durability is weak. Has occurred, resulting in quality deterioration such as deformation and damage of the sewing head. In addition, for example, when cutting or laser processing is performed on a workpiece, the work area of the workpiece is widened, such as the work area that can be irradiated with laser light becomes narrow due to the presence of the clamp. There was a problem that it was difficult to secure.

  The present invention has been made to solve the above-described problems, and can accurately position a workpiece on a base without causing quality deterioration such as deformation or damage and ensuring a wide work area. The purpose is to provide a jig that can be used. It is another object of the present invention to provide a manufacturing method of a workpiece that can be manufactured without being deteriorated in quality such as deformation and damage and that has been processed accurately.

  In order to achieve the above object, a jig of the invention according to claim 1 is a jig for positioning and processing a workpiece on a base, and provided to face each other on the base. Conveying at least one of the first reference pin and the second reference pin and the first reference pin and the second reference pin in a direction in which the first reference pin and the second reference pin are formed; A reference pin conveying means for fitting the first reference pin and the second reference pin into the first reference hole and the second reference hole formed in the workpiece placed on the base; The first movable pin and the second movable pin provided in parallel on the base, and the first movable pin and the second movable pin are conveyed in the other direction toward another direction orthogonal to the first direction. Formed on the workpiece placed on the base. Movable pin conveying means for fitting the first movable pin and the second movable pin into the first fixed hole and the second fixed hole, respectively, and the workpiece includes the first reference hole and the second reference hole. The first movable pin pivotally supported in the one direction by the first reference pin and the second reference pin respectively inserted into the hole, and respectively inserted into the first fixed hole and the second fixed hole; The second movable pin is pivotally supported in the other direction and positioned on the base.

  In addition to the configuration of the invention according to claim 1, the jig of the invention according to claim 2 is configured so that a tip end portion fitted into the first fixed hole in the first movable pin has the first fixed hole. While having substantially the same shape and size as the opening surface, the tip portion fitted into the second fixed hole in the second movable pin has a shape different from the opening surface of the second fixed hole, and It is smaller than the opening surface of the second fixing hole.

  In addition to the configuration of the invention according to claim 2, the jig of the invention according to claim 3 has only a longitudinal diameter at a tip portion inserted into the second fixed hole in the second movable pin. It has a substantially rhombic cross-sectional shape having the same diameter as the opening surface of the second fixing hole.

  According to a fourth aspect of the present invention, in addition to the structure of the first aspect of the present invention, the workpiece is a sewing head that forms a head of a sewing machine, The first reference hole and the second reference hole are formed on a side face of the sewing machine head.

  Moreover, in addition to the structure of the invention of Claim 4, the jig | tool of the invention which concerns on Claim 5 is for the said 1st reference hole and the said 2nd reference hole to insert the cloth holding member which hold | suppresses cloth The presser bar hole is formed in communication with the sewing machine head.

  According to a sixth aspect of the present invention, in addition to the configuration of the fifth aspect of the invention, the first fixing hole and the second fixing hole include a main shaft hole for arranging a main shaft in the sewing machine head. It is formed in the peripheral part in the one side surface in which was formed.

  According to a seventh aspect of the present invention, there is provided a method for manufacturing a workpiece, wherein the workpiece is positioned and processed on a base to manufacture a workpiece subjected to any processing. A method, wherein at least one of a first reference pin and a second reference pin provided opposite to each other on the base is conveyed in one direction in which the first reference pin and the second reference pin are formed. Then, a reference pin transporting step of inserting the first reference pin and the second reference pin into the first reference hole and the second reference hole formed in the workpiece placed on the base, respectively. And the first movable pin and the second movable pin provided in parallel on the base are transported in another direction orthogonal to the one direction, and formed on the workpiece placed on the base. The first movable pin and the second movable pin are inserted into the first fixed hole and the second fixed hole. A movable pin conveying step for inserting each of the first and second reference pins and the first reference pin and the second reference pin respectively inserted in the first reference hole and the second reference hole; and A state in which the workpiece, which is pivotally supported in the other direction by the first movable pin and the second movable pin respectively inserted into the first fixed hole and the second fixed hole, is positioned on the base. And a processing step of processing with.

  A manufacturing method of a sewing head according to an eighth aspect of the invention is a manufacturing method of a workpiece according to claim 7, wherein the workpiece is a sewing head that forms a head of a sewing machine, The first reference hole and the second reference hole are presser bar holes formed in communication with a face plate side portion of the sewing machine head in order to insert a cloth presser member that presses down the cloth, and the first fixing hole The second fixing hole is formed at a peripheral edge portion on one side surface in which a main shaft hole for disposing a main shaft in the sewing head is formed.

  In the jig of the invention according to claim 1, the first reference pin and the second reference pin provided to face each other in one direction are respectively fitted into the first reference hole and the second reference hole of the workpiece, By inserting the first movable pin and the second movable pin provided in parallel to the other direction into the first fixed hole and the second fixed hole of the workpiece, the workpiece is moved in one direction and the other direction. To be positioned on the base. Therefore, the workpiece can be accurately positioned on the base without causing quality deterioration such as deformation or damage to the workpiece and ensuring a wide work area.

  In the jig of the invention according to claim 2, in addition to the effect of the invention of claim 1, the tip portion of the first movable pin has substantially the same shape and size as the opening surface of the first fixing hole. On the other hand, the tip of the second movable pin has a shape different from the opening surface of the second fixing hole and is smaller than the opening surface of the second fixing hole. Therefore, the first movable pin and the second movable pin provided in parallel can be securely fitted into the first fixed hole and the second fixed hole of the workpiece, and the workpiece can be reliably fitted in the other direction. Can be pivotally supported.

  Moreover, in the jig of the invention according to claim 3, in addition to the effect of the invention of claim 2, the tip of the second movable pin has the same diameter as the opening surface of the second fixed hole only in the longitudinal direction. The cross-sectional shape has a substantially rhombus shape. Therefore, the second movable pin can be easily fitted into the second fixed hole, and distortion and deflection of the workpiece can be prevented.

  In the jig of the invention according to claim 4, in addition to the effect of the invention according to any one of claims 1 to 3, the workpiece is a sewing head, and the first reference hole and the second reference hole are It is formed on the face plate side of the sewing head. Therefore, even if the workpiece is a sewing head, the present invention can be applied, and the sewing head can be positioned more appropriately by pivotally supporting the sewing head on the side of the highly durable face plate.

  In the jig of the invention according to claim 5, in addition to the effect of the invention of claim 4, the first reference hole and the second reference hole are presser bar holes formed in communication with the sewing machine head. Therefore, the present invention can be applied to processing various types of sewing heads by using the presser bar holes of the sewing head.

  In addition, in the jig of the invention according to claim 6, in addition to the effect of the invention of claim 5, the first fixing hole and the second fixing hole are formed at the peripheral edge on one side surface where the main shaft hole is formed. Yes. Therefore, while supporting the sewing machine head on the side surface in which the main shaft hole of the sewing machine head is formed, a wider work area can be secured on the side surface.

  In the method for manufacturing a workpiece of the invention according to claim 7, the first reference pin and the second reference pin provided to face each other in one direction are used as the first reference hole and the second reference pin of the workpiece. The first movable pin and the second movable pin provided in parallel in the other directions are respectively inserted into the first fixed hole and the second fixed hole of the workpiece, so that the workpiece is one. Machining was carried out in a state where it was axially supported in the direction and other directions and positioned on the base. Therefore, it is possible to manufacture a workpiece that is not subjected to quality deterioration such as deformation and damage and is subjected to accurate processing.

  In the sewing head manufacturing method according to the eighth aspect of the present invention, the workpiece is a sewing head, and the first reference hole and the second reference hole are formed by communicating with the side of the face plate of the sewing head. It is a rod hole, and the first fixing hole and the second fixing hole are formed at the peripheral edge on one side surface where the main shaft hole is formed. Therefore, it is possible to manufacture a sewing head that is not subjected to quality deterioration such as deformation or damage and is subjected to accurate processing.

  Hereinafter, an embodiment of a jig 1 embodying the present invention will be described with reference to the drawings. In this embodiment, a sewing machine head 100 (see FIGS. 5 to 9) that forms the head of a sewing machine described later is fixed by the jig 1, and the sewing machine head 100 is processed using an NC machine tool. FIG. 1 is a front view showing the positional relationship with the machining head and viewing the jig 1 from the front. FIG. 2 is a left side view of the jig 1. FIG. 3 is a right side view of the jig 1. FIG. 4 is a plan view of the jig 1.

  First, the overall configuration of the jig 1 according to the present embodiment will be described. As shown in FIGS. 1 to 4, the jig 1 according to the present embodiment moves the sewing machine head 100 in the Z-axis direction and the X-axis direction on the jig base 60 on which the sewing machine head 100 that is a workpiece is placed. , And a mechanism for arbitrarily processing the sewing head 100 by positioning and fixing from three directions in the Y-axis direction. In the present embodiment, the vertical direction in FIGS. 1 to 3 is the Z-axis direction corresponding to the vertical direction (vertical direction) in the jig 1. Moreover, the horizontal direction of FIG.1 and FIG.4 is the X-axis direction corresponded in the left-right direction (horizontal direction) in the jig | tool 1. FIG. 2 and 3 and the vertical direction in FIG. 4 are the Y-axis direction corresponding to the front-rear direction in the jig 1.

  First, the jig base 60 is a substantially rectangular plate-like member in plan view (FIG. 4), and the lower surface thereof is fixed to the box-shaped housing support part 99. The housing support unit 99 supports the entire housing of the jig 1 and incorporates a circuit board and a power supply unit (not shown) that control the operation of the jig 1. The circuit board and the power supply unit are connected to an external controller (not shown), and the user operates the controller to position the sewing machine head 100 at an arbitrary position or perform an arbitrary process. be able to.

  Next, on the upper surface of the jig base 60, a reference pin base 20 having a substantially quadrangular pyramid shape with a flat surface formed at the head is provided. The upper end surface of the reference pin base 20 is provided with a Z-axis fixed reference pin 21 for positioning the sewing machine head 100 placed on the jig base 60 from the lower side. The Z-axis fixed reference pin 21 is a protrusion protruding upward.

  A Z-axis slider 10 for conveying the Z-axis movable reference pin 11 in the Z-axis direction is provided on the left side of the reference pin base 20 as viewed from the left side (FIG. 2). The Z-axis slider 10 includes a Z-axis movable reference pin 11, a clamp 12, a rod connecting portion 13, a slider substrate 14, a first Z-axis guide rail 15, and a second Z-axis guide rail 16. The slider substrate 14 is a rectangular plate-like member that is parallel to the Z-axis direction and the X-axis direction and has the Z-axis direction as a longitudinal direction.

  As viewed from the left side (FIG. 2), a clamp 12 for pressing and fixing the sewing head 100 mounted on the jig base 60 from the upper side protrudes from the upper edge of the slider substrate 14 to the right. Has been. The clamp 12 is a plate-like member having a substantially isosceles triangular shape in a plan view (FIG. 4) that is parallel to the X-axis direction and the Y-axis direction and has a joint surface with the slider substrate 14 as a base. A Z-axis movable reference pin 11 for positioning the sewing head 100 placed on the jig base 60 from the upper side is provided on the lower surface of the clamp 12. The Z-axis movable reference pin 11 is a protrusion protruding downward.

  The Z-axis movable reference pin 11 and the Z-axis fixed reference pin 21 are configured to face each other on the same axis parallel to the Z-axis direction. That is, the Z-axis movable reference pin 11 and the Z-axis fixed reference pin 21 are at the same position in the plan view and the XY plane, and have the same axial direction at different heights in the front view and the Z-axis direction. So as to face each other.

  On the other hand, when viewed from the left side (FIG. 2), a rod connecting portion 13 to which a rod 71 described later is connected and fixed is formed protruding from the upper end edge of the slider substrate 14 to the left. The rod connecting portion 13 is a substantially square plate-like member that is parallel to the X-axis direction and the Y-axis direction and is a plan view (FIG. 4). Further, on the left side surface of the slider substrate 14 in FIG. 2, in other words, on the back surface of the slider substrate 14 (FIG. 4), two rail-shaped members of the first Z-axis guide rail 15 and the second Z-axis guide rail 16 are provided. It is formed parallel to the Z-axis direction.

  In the left side view (FIG. 2), on the left side of the slider substrate 14, the first Z-axis guide rail 15 and the second Z-axis guide rail 16 are connected to the first guide connection portion 75 and the second guide connection portion 76 in the Z-axis direction. Each is engaged so as to be slidable (see FIGS. 2 and 4). The first guide connection portion 75 and the second guide connection portion 76 are prismatic members having a U-shaped cross-sectional shape opened downward in FIG. 4 and having a longitudinal direction in the Z-axis direction. That is, the first Z-axis guide rail 15 and the second Z-axis guide rail 16 are respectively engaged with the concave portions formed in the first guide connecting portion 75 and the second guide connecting portion 76, and can slide along the concave portions. It has become.

  In addition, an air cylinder 70 is provided on the left side of the slider substrate 14 in a left side view (FIG. 2). The air cylinder 70 moves the rod 71 back and forth in the Z-axis direction by air pressure. The rod 71 is a connecting member formed upward from the air cylinder 70, and its tip is fixed to the rod connecting portion 13. With such a configuration, when the air cylinder 70 moves the rod 71 forward and backward in the Z-axis direction, the Z-axis slider 10 is conveyed in the Z-axis direction accordingly.

  In addition, between the reference pin base 20 and the slider substrate 14 on the upper surface of the jig base 60, the face plate side temporary contact for guiding the sewing machine head 100 placed on the jig base 60 to an appropriate fixing position. A block 40 is provided. The face plate-side temporary contact block 40 is formed by bending a metal plate and is erected upward from the jig base 60. Then, the face plate-side temporary contact block 40 is placed so that the face plate side portion 110 (see FIG. 5 and the like) of the sewing head 100 placed from an obliquely rightward direction can be temporarily placed in front view (FIG. 1). It has flexibility with respect to the weight of the sewing head 100, and the upper end portion of the face plate side temporary contact block 40 is bent slightly to the left as viewed from the left side (FIG. 2).

  Next, in a front view (FIG. 1), a temporary placement base 50 having a substantially rectangular parallelepiped shape is provided in the right direction of the reference pin base 20 on the upper surface of the jig base 60 of the jig 1. A temporary contact block fixing portion 53 to which the first pulley side temporary contact block 51 and the second pulley side temporary contact block 52 are fixed is fixed to the upper surface of the temporary placement base 50. The temporary contact block fixing portion 53 has a substantially rectangular parallelepiped shape that is long in the Y-axis direction in plan view, but the upper surface is inclined so that the thickness gradually increases in the right direction in FIG. A pulley side portion 120 (see FIG. 5 and the like) of the sewing machine head 100 is placed on the inclined surface.

  Similarly to the face plate-side temporary contact block 40, the first pulley-side temporary contact block 51 and the second pulley-side temporary contact block 52 are also formed by bending a metal plate. The first pulley-side temporary contact block 51 is fixed to the left side surface of the temporary contact block fixing portion 53 (see FIG. 1), and the second pulley-side temporary contact block 52 is fixed to the back surface of the temporary contact block fixing portion 53 ( 3), each of them is erected upward from the jig base 60. Then, the first pulley-side temporary contact block 51 and the second pulley-side temporary contact block 51 are arranged so that the pulley side portion 120 (see FIG. 5 and the like) of the sewing head 100 placed from the diagonally upper right side can be temporarily applied. The pulley-side temporary contact block 52 has flexibility with respect to the weight of the machine head 100 to be placed. Further, the vicinity of the upper end portion of the first pulley-side temporary contact block 51 is bent slightly to the left when viewed from the front (FIG. 1), and the vicinity of the upper end portion of the second pulley-side temporary contact block 52 is viewed from the right side (see FIG. 1). 3) Slightly bent to the right.

  Further, an X-axis slider 30 for conveying the first X-axis movable pin 31 and the second X-axis movable pin 32 in the X-axis direction is provided on the right side of the temporary placement base 50 as viewed from the right side (FIG. 3). . The X-axis slider 30 includes a first X-axis movable pin 31, a second X-axis movable pin 32, a clamp 33, a rod connecting portion 34, a slider substrate 35, a first X-axis guide rail 36, and a second X-axis guide rail 37. . The slider substrate 35 is a rectangular plate-like member that is parallel to the Z-axis direction and the X-axis direction and has the X-axis direction as a longitudinal direction.

  When viewed from the right side (FIG. 3), a clamp 33 for projecting and fixing the sewing head 100 placed on the jig base 60 from the side is projected from the slider substrate 35 to the left. . The clamp 33 is a substantially rectangular plate-like member that is parallel to the Z-axis direction and the Y-axis direction and has the Z-axis direction as a longitudinal direction. A first X-axis movable pin 31 and a second X-axis movable pin 32 projecting leftward are provided on the left side surface of the clamp 33 in front view (FIG. 1).

  The first X-axis movable pin 31 and the second X-axis movable pin 32 are protrusions for positioning the sewing machine head 100 placed on the jig base 60 from the right side when viewed from the front (FIG. 1). The first X-axis movable pin 31 is formed at the upper edge of the clamp 33, while the second X-axis movable pin 32 is formed at the lower edge of the clamp 33. The first X-axis movable pin 31 and the second X-axis movable pin 32 are arranged along the vertical direction (Z-axis direction), and the first X-axis movable pin 31 and the second X-axis movable pin 32 are in the respective axial directions. Is parallel to the horizontal direction (X-axis direction). That is, the first X-axis movable pin 31 and the second X-axis movable pin 32 are at the same position in the plan view and the XY plane, and the respective axial directions are parallel at different heights in the front view and the Z-axis direction. Are arranged as follows.

  On the other hand, when viewed from the right side (FIG. 3), a rod coupling portion 34 to which a rod 81 (described later) is coupled and fixed protrudes from the slider substrate 35 to the right. The rod connecting portion 34 is a substantially square plate-like member that is parallel to the Z-axis direction and the Y-axis direction. 3 on the right side in FIG. 3 of the slider substrate 35, in other words, the back surface (FIG. 4) of the slider substrate 35, the first X-axis guide rail 36 on the upper end side and the second X-axis guide rail 37 on the lower end side. The rail-shaped member is formed in parallel with the X-axis direction.

  In the right side view (FIG. 3), on the right side surface of the slider substrate 35, the first X-axis guide rail 36 and the second X-axis guide rail 37 are connected to the first guide connecting portion 86 and the second guide connecting portion 87 in the X-axis direction. Each is engaged so as to be slidable (see FIGS. 3 and 4). The first guide connecting portion 86 and the second guide connecting portion 87 are prismatic members having a U-shaped cross-sectional shape opened leftward in FIG. 3 and having the X-axis direction as the longitudinal direction. That is, the first X-axis guide rail 36 and the second X-axis guide rail 37 are respectively engaged with the recesses formed in the first guide connection part 86 and the second guide connection part 87, and can slide along the recesses. It has become.

  In addition, an air cylinder 80 that moves the rod 81 forward and backward in the X-axis direction by air pressure is provided on the right side of the slider substrate 35 as viewed from the right side (FIG. 3). Since the tip end portion of the rod 81 is fixed to the rod connecting portion, when the air cylinder 80 advances and retracts the rod 81 in the X-axis direction, the X-axis slider 30 is conveyed in the X-axis direction accordingly.

  A processing head 90 for processing the sewing machine head 100 placed on the jig base 60 is disposed in the right direction of the jig base 60 when viewed from the front (FIG. 1). In the present embodiment, the machining head 90 is a machining head that cuts a workpiece with a cutting drill. The processing head 90 can be moved to an arbitrary position on the jig base 60 by a carriage (not shown), and the sewing head 100 can be processed into an arbitrary shape. The processing position and processing mode of the sewing head 100 by the processing head 90 can be arbitrarily designated by a user from a controller (not shown).

  Next, the sewing machine head 100 processed by the jig 1 will be described. FIG. 5 is a front view of the sewing head 100. FIG. 6 is a left side view of the sewing head 100. FIG. 7 is a right side view of the sewing head 100. FIG. 8 is a plan view of the sewing head 100. FIG. 9 is a bottom view of the sewing head 100.

  As shown in FIGS. 5 to 9, the sewing machine head 100 includes a face plate side portion 110 corresponding to the left side housing portion and a pulley side portion 120 corresponding to the right side housing portion. The sewing head 100 according to the present embodiment is a sewing head for a large industrial sewing machine and is a casting having excellent durability. Generally, in order to press the cloth during sewing, the sewing machine device is provided with a cloth presser bar attached to the lower end and capable of reciprocating in the vertical direction. Therefore, an upper presser bar hole 111 and a lower presser bar hole 112 which are through-holes communicating with the face plate side part 110 in the vertical direction (vertical direction) are formed in the sewing machine head 100 in order to fit the cloth presser bar. Yes. The upper presser bar hole 111 is formed on the upper surface of the sewing head 100 (see FIG. 8), while the lower presser bar hole 112 is formed on the lower surface of the sewing head 100 (see FIG. 9). Is formed. As will be described later, when the sewing machine head 100 is placed on the jig base 60, the Z-axis movable reference pin 11 is inserted into the upper presser bar hole 111, and the Z-axis fixed reference pin is inserted into the lower presser bar hole 112. 21 is inserted.

  Further, in the sewing machine, the power for driving the needle is supplied to the needle driving device built in the face plate side portion 110 by a motor (not shown) built in the pulley side portion 120, but the main shaft for supplying the power (Not shown) communicates from the pulley side portion 120 to the face plate side portion 110 and is incorporated. Therefore, the sewing head 100 has a first main shaft hole 130a formed in the face plate side portion 110 and a second main shaft hole 130b formed in the pulley side portion 120 as through holes for disposing the main shaft therein. . The first main shaft hole 130a is formed on the left side surface of the sewing head 100 (see FIG. 6), and the second main shaft hole 130b is formed on the right side surface of the sewing head 100 (see FIG. 7). It is formed on the axis.

  Further, on the right side surface of the sewing head 100, a top-discarding reference hole 121 and a bottom-discarding reference hole 122 that are holes for positioning and fixing with the jig 1 are formed. The upper and lower reference holes 121 and 122 are formed at the right edge of the right side surface of the sewing machine head 100 when viewed from the right side (FIG. 7). It should be noted that the interval between the upper and lower reference holes 121 and 122 is equal to the interval between the first X-axis movable pin 31 and the second X-axis movable pin 32, respectively. As will be described later, when the sewing machine head 100 is placed on the jig base 60, the first X-axis movable pin 31 is inserted into the upper-discarding reference hole 121, and the second X-axis movable pin is inserted into the lower-discarding reference hole 122. 32 is inserted.

  Next, various pins for positioning the sewing machine head 100 with the jig 1 will be described. FIG. 10 is an enlarged view for explaining the configuration of the Z-axis movable reference pin 11. FIG. 11 is an enlarged view for explaining the configuration of the second X-axis movable pin 32.

  As shown in FIG. 10, the maximum diameter of the Z-axis movable reference pin 11 is substantially equal to the diameter of the upper presser bar hole 111 so as to fit closely with the upper presser bar hole 111. Further, the Z-axis movable reference pin 11 has a cylindrical shape with a circular cross section perpendicular to the axial direction thereof, and its tip end portion has a narrowed and rounded shape. It is easy to fit in. The Z-axis fixed reference pin 21 has the same configuration as the Z-axis movable reference pin 11, and has a shape so as to be closely fitted to the lower presser bar hole 112 and to be easily fitted.

  Further, the first X-axis movable pin 31 also has a maximum diameter substantially equal to the diameter of the discarded reference hole 121 so that the first X-axis movable pin 31 can be closely fitted to the discarded reference hole 121, similarly to the Z-axis movable reference pin 11. In addition, since the distal end portion of the first X-axis movable pin 31 has a narrowed and rounded shape, it is easy to be fitted into the upper reference hole 121.

  On the other hand, as shown in FIG. 11, the second X-axis movable pin 32 has a hexagonal column shape in which the cross section perpendicular to the axial direction forms a substantially hexagonal shape, and its tip is narrowed and rounded. The substantially hexagonal cross-sectional shape is a substantially rhombus whose diameter in the Z-axis direction is smaller than the diameter of the discarded reference hole 122 and only the diameter in the Y-axis direction is substantially equal to the diameter of the discarded reference hole 122. The cross-sectional shape is made. Therefore, the second X-axis movable pin 32 fits tightly in the Y-axis direction with the discarded reference hole 122 and is fitted so that a gap is generated in the Z-axis direction. Even if it is slightly deviated, it is easy to fit into the discarded reference hole 122.

  Although not shown, a micro hole for ejecting air is formed at the tip of the Z-axis movable reference pin 11. Then, dust and dust in the upper presser bar hole 111 are removed by the air ejection hole, and the Z-axis movable reference pin 11 is inserted into the upper presser bar hole 111 by the change of the air ejection pressure in the jig 1. Whether or not it is specified. The Z-axis fixed reference pin 21, the first X-axis movable pin 31, and the second X-axis movable pin 32 are similarly formed with air ejection holes.

  Hereinafter, a process of manufacturing the sewing machine head 100 in the jig 1 will be described. FIG. 12 is a front view of the jig 1 on which the sewing head 100 is placed in the “Z-axis pin conveying step”. FIG. 13 is a front view of the jig 1 on which the sewing machine head 100 is placed in the “X-axis pin conveying step”. FIG. 14 is a front view of the jig 1 on which the sewing head 100 is placed in the “machining process”.

  As shown in FIG. 12, when the sewing machine head 100 is manufactured in the jig 1, the Z-axis slider 10 is retracted in the upward direction and the X-axis slider 30 is retracted in the right direction, so that the jig base is A work area on 60 is secured to be wide. Then, the user places the sewing head 100 on the jig base 60 from the upper right side (in the upper right direction in FIG. 12). At this time, the face plate side portion 110 of the sewing head 100 is moved downward along the face plate side temporary contact block 40, and the lower presser bar hole 112 is fitted into the Z-axis fixed reference pin 21. Note that the Z-axis movable fixed pin 21 having the above-described shape fits properly even if the cross-sectional center is slightly shifted from the cross-sectional center of the lower presser bar hole 112 in front view. On the other hand, the pulley side portion 120 of the sewing head 100 is moved downward along the first pulley side temporary contact block 51 and the second pulley side temporary contact block 52, and the pulley side portion 120 is moved to the temporary contact block fixing portion 53. Place.

  Thereafter, a “Z-axis pin conveyance step” is performed in which the Z-axis slider 10 is moved downward (see FIG. 12). Then, as shown in FIG. 13, the Z-axis movable reference pin 11 is fitted into the upper presser bar hole 111, and the sewing machine head 100 is gripped in the vertical direction by the pressing force of the clamp 12. Accordingly, the sewing machine head 100 is pivotally supported in the Z-axis direction by the Z-axis movable reference pin 11 and the Z-axis fixed reference pin 21. Note that the Z-axis movable reference pin 11 having the shape as described above fits properly even if the cross-sectional center is slightly shifted from the cross-sectional center of the upper presser bar hole 111 in front view.

  Further, an “X-axis pin conveyance process” is performed in which the X-axis slider 30 is moved leftward (see FIG. 13). Then, as shown in FIG. 14, the first X-axis movable pin 31 and the second X-axis movable pin 32 are respectively inserted into the upper discard reference hole 121 and the lower discard reference hole 122, and the sewing head 100 is moved by the pressing force of the clamp 33. It is gripped from the side. As a result, the sewing head 100 is pivotally supported in the X-axis direction by the first X-axis movable pin 31 and the second X-axis movable pin 32. The first X-axis movable pin 31 and the second X-axis movable pin 32 having the shapes as described above are slightly shifted in front view from the cross-sectional centers of the upper and lower reference holes 121 and 122, respectively. Even if the interval width between the first X-axis movable pin 31 and the second X-axis movable pin 32 is slightly different from the interval width between the upper-discarding reference hole 121 and the lower-discarding reference hole 122, it fits properly.

  Here, in this embodiment, since the sewing head 100 is pivotally supported by two spaced apart reference pins, the first X-axis movable pin 31 and the second X-axis movable pin 32, the sewing head 100 is supported in the Y-axis direction. Distortion and deflection are unlikely to occur. That is, the sewing head 100 placed on the jig 1 is accurately positioned and fixed in three dimensions in the Z-axis direction, the X-axis direction, and the X-axis direction by the above-described steps.

  In the conventional jig, when the workpiece is positioned and fixed by the clamp, a pressure of 200 to 250 kg in the Z-axis direction and about 200 kg in the X-axis direction is applied. On the other hand, in the jig 1 of the present embodiment, the clamp 12 applies a pressure of 100 to 150 kg in the Z-axis direction, and the clamp 33 applies a pressure of 30 to 40 kg in the Z-axis direction. That is, according to the jig 1 of this embodiment, it is possible to position and fix the sewing head 100 with a clamping pressure smaller than that of the conventional one. Therefore, quality deterioration such as deformation or damage does not occur in the sewing head 100.

  Then, after the sewing head 100 is positioned and fixed on the jig base 60, a “machining process” is performed in which the machining head 90 processes the sewing head 100 according to the content specified by the user from a controller (not shown). (See FIG. 14). Here, since the sewing head 100 is fixed by four pins such as the Z-axis movable reference pin 11, the work area that the processing head 90 can process is larger than the conventional method of gripping and fixing with a clamp. wide. Further, as shown in FIG. 14, since the first X-axis movable pin 31 and the second X-axis movable pin 32 are pivotally supported at the peripheral edge portion on the back surface of the sewing head 100, the second X-axis movable pin 32 is also provided on the right side surface of the sewing head 100. A wide work area around the spindle hole 130b is secured.

  As described above, according to the jig 1 according to the present embodiment, the Z-axis movable reference pin 11 and the Z-axis fixed reference pin 21 provided to face each other in the Z-axis direction are connected to the upper presser bar hole 111 and the lower The first X-axis movable pin 31 and the second X-axis movable pin 32 provided in parallel to the X-axis direction are respectively inserted into the presser bar holes 112, and are respectively inserted into the upper and lower reference holes 121 and 122 of the sewing machine head 100. By inserting the sewing head 100, the sewing machine head 100 is pivotally supported in the Z-axis direction and the X-axis direction and positioned on the jig base 60. Therefore, the sewing head 100 can be accurately positioned on the jig base 60 without causing quality deterioration such as deformation or damage to the sewing head 100 and securing a wide work area.

  Further, the tip end portion of the first X-axis movable pin 31 has substantially the same shape and size as the opening surface of the top-discarding reference hole 121, while the tip portion of the second X-axis movable pin 32 is the opening surface of the bottom-discarding reference hole 122. The shape is different from that of the reference hole 122 and is smaller than the opening surface of the discarded reference hole 122. Therefore, the first X-axis movable pin 31 and the second X-axis movable pin 32 can be reliably fitted into the upper and lower reference holes 121 and 122, respectively, and the sewing machine head 100 can be securely supported in the X-axis direction. can do. Furthermore, the tip end portion of the second X-axis movable pin 32 has a substantially rhombic cross-sectional shape in which only the diameter in the Y-axis direction has the same diameter as the opening surface of the discarded reference hole 122. Therefore, the second X-axis movable pin 32 can be easily fitted into the discarded reference hole 122, and distortion and deflection of the sewing head 100 can be prevented.

  The workpiece is a sewing head 100, and the upper presser bar hole 111 and the lower presser bar hole 112 are formed in the face plate side portion 110 of the sewing head 100. Therefore, the present invention can be applied to machining of various sewing heads by using the presser bar holes of the sewing head 100, and the sewing head 100 is pivotally supported on the highly durable face plate side portion 110. The sewing head 100 can be positioned more appropriately.

  Further, the upper discard reference hole 121 and the lower discard reference hole 122 are formed at the peripheral edge portion of the right side surface of the sewing machine head 100 in which the second main shaft hole 130b is formed. Therefore, a wider work area can be secured on the left and right side surfaces of the sewing head 100 by pivotally supporting the sewing head 100 on the right side surface of the sewing head 100 in which the second main shaft hole 130b is formed.

  Incidentally, in the above embodiment, the Z-axis movable reference pin 11 and the Z-axis fixed reference pin 21 correspond to the “first reference pin” and the “second reference pin” of the present invention. The rod hole 112 corresponds to the “first reference hole” and the “second reference hole” of the present invention. The first X-axis movable pin 31 and the second X-axis movable pin 32 correspond to the “first movable pin” and the “second movable pin” of the present invention, and the upper discard reference hole 121 and the lower discard reference hole 122 of the present invention. It corresponds to a “first fixing hole” and a “second fixing hole”. The Z-axis slider 10 corresponds to the “reference pin conveying means” of the present invention, and the X-axis slider 30 corresponds to the “movable pin conveying means” of the present invention. The “Z-axis pin transport process” corresponds to the “reference pin transport process” of the present invention, and the “X-axis pin transport process” corresponds to the “movable pin transport process” of the present invention.

  The present invention is not limited to the embodiment described in detail above, and it goes without saying that various modifications are possible. FIG. 15 is a front view of the jig 1 on which another sewing head 100 ′ is placed.

  For example, it goes without saying that the workpiece is not limited to a sewing head. That is, as a workpiece, pin holes for supporting in the Z-axis direction (upper presser bar hole 111 and lower presser bar hole 112) and pin holes for supporting in the X-axis direction (upper discarded reference hole) 121 and the discarded reference hole 122), various workpieces can be positioned and fixed by the jig 1 and processed arbitrarily.

  Furthermore, even when the workpiece is a sewing head, sewing heads of various shapes and sizes can be applied. As shown in FIG. 15, the sewing head 100 ′ has a larger sectional area in the YZ plane of the connecting portion of the face plate side part 110 and the pulley side part 120 than the sewing head 100, and the XY plane of the pulley side part 120. The cross-sectional area at is large. Therefore, the sewing head 100 ′ is placed on the temporary placement base 50 by removing the first pulley-side temporary contact block 51. Thus, the various sewing heads can be positioned and fixed by the jig 1 by changing the configuration of the various temporary contact blocks to the optimum one.

  Further, in the present embodiment, the sewing head 100 is pivotally supported in the Z-axis direction by using two pins, ie, the Z-axis movable reference pin 11 and the Z-axis fixed reference pin 21, and the first X-axis movable pin 31 and the first The sewing machine head 100 is supported in the X-axis direction by using two pins of the 2X-axis movable pin 32. The size, shape, quantity, and the like of the pins for positioning the sewing head 100 can be arbitrarily changed to an optimum one according to the workpiece or the processing purpose. For example, three or more X-axis movable pins may be provided on the clamp 33, or a pin for fixing the sewing machine head 100 from the Y-axis direction may be provided.

  Needless to say, the processing method executed by the processing head 90 is not limited to cutting processing, and other than precision processing such as electric discharge processing and plasma processing, cutting processing and polishing processing according to the processing purpose of the workpiece. Etc. may be executed arbitrarily.

  The jig, the method for manufacturing a workpiece, and the method for manufacturing a sewing head according to the present invention can be used as a jig for positioning and processing a workpiece.

It is the front view which looked at the jig | tool 1 from the front while showing the positional relationship with a process head. 3 is a left side view of the jig 1. FIG. 3 is a right side view of the jig 1. FIG. 2 is a plan view of the jig 1. FIG. 2 is a front view of the sewing head 100. FIG. 2 is a left side view of the sewing head 100. FIG. 2 is a right side view of the sewing head 100. FIG. 2 is a plan view of the sewing head 100. FIG. 2 is a bottom view of the sewing machine head 100. FIG. 4 is an enlarged view for explaining a configuration of a Z-axis movable reference pin 11. FIG. 4 is an enlarged view for explaining a configuration of a second X-axis movable pin 32. FIG. It is a front view of the jig 1 on which the sewing machine head 100 is placed in the “Z-axis pin conveying step”. FIG. 6 is a front view of the jig 1 on which the sewing head 100 is placed in the “X-axis pin conveying step”. FIG. 3 is a front view of the jig 1 on which the sewing head 100 is placed in the “machining process”. It is a front view of the jig | tool 1 which mounted other sewing machine head 100 '.

Explanation of symbols

1 Jig 10 Z-axis slider 11 Z-axis movable reference pin 12 Clamp 13 Rod connecting portion 14 Slider substrate 15 First Z-axis guide rail 16 Second Z-axis guide rail 20 Reference pin base 21 Z-axis movable fixed pin 30 X-axis slider 31 First 1X axis movable pin 32 2nd X axis movable pin 33 Clamp 34 Rod connecting portion 35 Slider substrate 36 1st X axis guide rail 37 2nd X axis guide rail 40 Face plate side temporary contact block 50 Temporary placement base 51 First pulley side temporary contact block 52 Second pulley side temporary contact block 53 Temporary contact block fixing portion 60 Jig base 70 Air cylinder 71 Rod 75 First guide connecting portion 76 Second guide connecting portion 80 Air cylinder 81 Rod 84 Rod connecting portion 86 First guide connecting portion 87 Second guide connecting portion 90 Processing head 99 Housing support portion 1 0,100' machine head 110 face plate side 111 on pressing Boana 112 under pressing Boana 120 pulley side 121 above discard reference hole 122 under discarded reference hole 130a first spindle hole 130b second spindle hole

Claims (8)

A jig for positioning and processing a workpiece on a base,
A first reference pin and a second reference pin provided opposite to each other on the base;
The work piece mounted on the base by transporting at least one of the first reference pin and the second reference pin in one direction in which the first reference pin and the second reference pin are formed. A reference pin conveying means for fitting the first reference pin and the second reference pin into the first reference hole and the second reference hole formed in the object,
A first movable pin and a second movable pin provided in parallel on the base toward another direction orthogonal to the one direction;
The first movable pin and the second movable pin are transported in the other direction, and the first fixed hole and the second fixed hole formed in the workpiece placed on the base, A movable pin conveying means for inserting the first movable pin and the second movable pin,
The workpiece is pivotally supported in the one direction by the first reference pin and the second reference pin that are respectively inserted into the first reference hole and the second reference hole, and the first fixing hole and A jig characterized in that the jig is pivotally supported in the other direction by the first movable pin and the second movable pin respectively fitted in the second fixed hole and positioned on the base.   The tip portion of the first movable pin that is inserted into the first fixed hole has substantially the same shape and size as the opening surface of the first fixed hole, while the second fixed hole of the second movable pin. 2. The jig according to claim 1, wherein a tip portion fitted into the second fixing hole has a shape different from an opening surface of the second fixing hole and is smaller than an opening surface of the second fixing hole.   The tip of the second movable pin that is inserted into the second fixed hole has a substantially rhombic cross-sectional shape in which only the diameter in the longitudinal direction is the same as the opening surface of the second fixed hole. The jig according to claim 2. The workpiece is a sewing head that forms a head of a sewing machine,
The jig according to any one of claims 1 to 3, wherein the first reference hole and the second reference hole are formed in a face plate side portion of the sewing head.   The first reference hole and the second reference hole are presser bar holes formed in communication with the sewing machine head in order to insert a cloth presser member for pressing the cloth. Jigs.   The said 1st fixing hole and the said 2nd fixing hole are formed in the peripheral part in the one side surface in which the main shaft hole for arrange | positioning a main shaft to the said sewing machine head was formed. jig. A workpiece manufacturing method for manufacturing a workpiece subjected to arbitrary processing by positioning and processing the workpiece on the base,
At least one of a first reference pin and a second reference pin provided opposite to each other on the base is conveyed in a direction in which the first reference pin and the second reference pin are formed, and the base A reference pin conveying step of inserting the first reference pin and the second reference pin into the first reference hole and the second reference hole formed in the workpiece placed on the workpiece,
The first movable pin and the second movable pin provided in parallel on the base are transported in another direction orthogonal to the one direction, and are formed on the workpiece placed on the base. A movable pin conveying step of inserting the first movable pin and the second movable pin into the first fixed hole and the second fixed hole,
The first reference pin and the second reference pin that are respectively inserted into the first reference hole and the second reference hole are pivotally supported in the one direction, and are connected to the first fixing hole and the second fixing hole. A machining step of machining the workpiece pivotally supported in the other direction by the first movable pin and the second movable pin that are respectively inserted in a state of being positioned on the base. A method of manufacturing a featured workpiece. A method of manufacturing a workpiece according to claim 7,
The workpiece is a sewing head that forms the head of a sewing machine,
The first reference hole and the second reference hole are presser bar holes formed in communication with a face plate side portion of the sewing machine head in order to insert a cloth presser member that presses the cloth,
The method of manufacturing a sewing head according to claim 1, wherein the first fixing hole and the second fixing hole are formed at a peripheral edge portion on one side surface where a main shaft hole for disposing a main shaft is formed in the sewing head.

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