JP2005040888A - Working device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a working device with a simple structure which has a relative positional relation between an object to be worked and a tool varying in three-dimensional directions to be capable of reducing the number of components, has a small number of various adjustment operations and is inexpensive. <P>SOLUTION: The working device has a table 14 to be placed rotatably on a rotary plane having a center region aligning with the direction of the XY plane as the center of rotation on a base member 12, on which the object to be worked can be mounted on the upper surface, and a rotary member rotatably placed on the rotary plane having one of ends aligning with the direction of the XY plane as the center of rotation, while both ends are placed to fix to the rotary member. The working device further has a wire 66 extending from one of ends fixedly provided on the rotary member to a first pulley, extending from the first pulley to a second pulley and extending from the second pulley to the other end fixedly provided on the rotary member across the other end of the rotary member, and a tool provided on the rotary member to be movable along the Z-axis direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a processing apparatus, and more particularly, to a processing apparatus suitable for use as a processing means, for example, when a predetermined processing is performed on a workpiece using a predetermined tool.
[0002]
In this specification, “tool” refers to a tool such as a cutter or a pen that performs predetermined processing such as cutting, cutting, or drawing on a workpiece by contacting the workpiece, ink, or the like. It means an instrument that performs a predetermined process such as printing on a workpiece without contacting the workpiece, such as a jet nozzle.
[0003]
[Prior art]
Conventionally, a microcomputer, a table on which a workpiece is placed, a tool for cutting the workpiece, and a driving device such as a motor that moves the table and the tool in a predetermined direction under the control of the microcomputer. And driving the driving device by the control of the microcomputer based on the predetermined data to move the relative positional relationship between the workpiece placed on the table and the tool in a three-dimensional direction. There is known a three-dimensional cutting apparatus that can cut out a three-dimensional shape based on predetermined data from (see, for example, Patent Document 1 and Patent Document 2).
[0004]
[Patent Document 1]
JP-A-8-106311
[0005]
[Patent Document 2]
Japanese Patent Laid-Open No. 10-34461
In such a three-dimensional cutting apparatus, for example, two parallel shafts that extend linearly in the X-axis direction, the Y-axis direction, and the Z-axis direction are arranged, and slide on the two parallel axes. In some cases, a tool or a table is movably disposed via a member.
[0006]
Then, the table on which the workpiece is placed and the tool are moved by the drive device along two parallel axes extending in the predetermined directions, for example, the tool is moved in the X-axis direction and the Z-axis direction. When the table on which the workpiece is placed is moved in the Y-axis direction, the relative positional relationship between the workpiece and the tool is changed in the X-axis direction, the Y-axis direction, and the Z-axis direction. It is made to change in the three-dimensional direction.
[0007]
However, in the conventional three-dimensional cutting apparatus, since it is necessary to arrange two parallel axes in each of the three-dimensional directions, the number of parts increases, the assembly efficiency decreases, and the size of the apparatus increases. There has been a problem of incurring cost and cost increase.
[0008]
In addition, in a conventional three-dimensional cutting apparatus, in order to smoothly move a tool such as a cutter or a table along two parallel axes, the two parallel axes are properly arranged with high accuracy. There was a need to be done.
[0009]
For example, it is indispensable to secure a clearance when two parallel shafts are arranged. However, if the clearance is too large, play will occur and the quality of cutting will deteriorate. On the other hand, if the clearance is too small, smooth movement cannot be achieved and the operation may be stopped.
[0010]
For this reason, in the conventional three-dimensional cutting apparatus, high part accuracy is required, and various adjustments such as reducing assembly errors or making the clearance appropriate are necessary. was there.
[0011]
Furthermore, in a conventional three-dimensional cutting apparatus, for example, a ball screw can be used instead of two parallel shafts. However, since the ball screw is a high-grade component, a new increase in cost is required. It will cause problems.
[0012]
Further, in the conventional three-dimensional cutting apparatus, the tool performs cutting or the like while linearly reciprocating within the processing area of the workpiece, so that the tool scans the entire area of the processing area and performs cutting or the like. It takes a long time to complete the machining, and there has been a demand for a method that can complete the machining in a short time and realize high-quality machining.
[0013]
[Problems to be solved by the invention]
The present invention has been made in view of the various problems of the conventional techniques as described above. The object of the present invention is to have a simple configuration and a relative positional relationship between a workpiece and a tool. Therefore, it is possible to reduce the number of parts, to reduce the number of various adjustment operations, and to provide an inexpensive processing apparatus.
[0014]
Another object of the present invention is to provide a machining apparatus that can perform machining of a workpiece with high accuracy in a short time.
[0015]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 of the present invention is a processing apparatus for processing a workpiece based on predetermined data, wherein a fixed base member and a center on the base member are arranged. A table that can be freely rotated on a rotation plane that coincides with the XY plane direction of the XYZ Cartesian coordinate system with the part as the rotation center, and on which the workpiece can be placed on the upper surface, and one end side as the rotation center A rotating member rotatably arranged on a rotation plane coinciding with the XY plane direction, a first pulley rotated by a driving force of a driving device, and a second arranged to face the first pulley. Both of the pulleys and both ends thereof are fixedly disposed on the rotating member, one end portion fixedly disposed on the rotating member leads to the first pulley, and the first pulley to the above To the second pulley, A wire extending from the second pulley to the other end of the rotating member that intersects the other end of the rotating member, and moves to the rotating member along the Z-axis direction. A tool that is freely arranged and has a tool whose tip is positioned so as to face the central portion of the table as the rotary member rotates on a rotation plane that coincides with the XY plane direction. It is.
[0016]
Therefore, according to the first aspect of the present invention, the table and the rotating member can be simply configured by rotating on the rotation plane coinciding with the XY plane direction and moving the tool along the Z-axis direction. By changing the relative positional relationship between the workpiece and the tool in a three-dimensional direction, the workpiece is three-dimensionally processed in a short time.
[0017]
In addition, it is not necessary to dispose two parallel shafts extending in each of the three-dimensional directions, which are essential for the conventional three-dimensional cutting apparatus described in the above-mentioned section “Prior Art”. Therefore, it is possible to reduce the amount of various adjustment operations and to provide an inexpensive processing apparatus. Further, since the wires are arranged on the rotating member so as to intersect, the rotation of the rotating member by the wire on the rotation plane coinciding with the XY plane direction can be performed very smoothly and with high accuracy. Processing of the workpiece is of high quality.
[0018]
Moreover, invention of Claim 2 among this invention is the end surface formed in the invention of Claim 1 in the other end part side of the said rotation member where the said wire cross | intersects by the curved surface of predetermined | prescribed curvature The wire crosses along the curved surface of the end face.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment of a processing apparatus according to the present invention will be described in detail with reference to the accompanying drawings.
[0020]
In the embodiment described below, a case will be described in which the processing apparatus according to the present invention is implemented as a three-dimensional cutting apparatus that cuts a workpiece using a cutter as a tool.
[0021]
FIG. 1 is a schematic configuration explanatory view (perspective view) of an example of an embodiment of a three-dimensional cutting apparatus according to the present invention. FIG. 2 is a schematic view corresponding to a view taken in the direction of arrow A in FIG. FIG. 3 is an explanatory diagram of the configuration (left side view), and FIG. 3 is an explanatory diagram of the schematic configuration (top view) corresponding to the view taken along arrow B in FIG. In FIGS. 1 and 3, for easy explanation, the upper end portion of the rear member 16 to be described later is shown in an open state.
[0022]
The three-dimensional cutting apparatus 10 is a vertical base member 12, a table 14 rotatably disposed on the upper surface 12 a of the base member 12, and a rear side 12 b of the base member 12 that stands vertically to the upper surface 12 a. The rear member 16, the support shaft 18 standing vertically to the upper surface 12a on the front side 12c of the base member 12, the arm 20 rotatably disposed on the upper end portion 18a of the support shaft 18, and the blade portion The cutter 22 is arranged on the arm 20 so that the upper surface 14a of the table 14 faces the upper surface 14a.
[0023]
The three-dimensional cutting apparatus 10 described above is such that the microcomputer 100 controls the entire operation including drive control of motors 34, 42, 48, and 56 described later. The cutting data used in the three-dimensional cutting apparatus 10 indicates a predetermined three-dimensional shape, and the predetermined three-dimensional data within a predetermined processing region (see the broken line region in FIG. 1) of the workpiece 200. The shape is cut out.
[0024]
Here, the base member 12 is extended in the XY plane direction in an XYZ orthogonal coordinate system (refer to reference diagrams showing coordinate systems in FIGS. 1 to 4), and has a substantially trapezoidal upper surface 12a. It has. Note that a leg portion (not shown) is formed on the lower surface 12d side of the substantially rectangular base member 12, and the three-dimensional cutting apparatus 10 is disposed so that the leg portion contacts a predetermined grounding surface. .
[0025]
The table 14 disposed at a substantially central portion of the upper surface 12a of the base member 12 has a substantially disc-like shape. A three-dimensional workpiece 200 is fixedly placed on the substantially circular upper surface 14 a of the table 14.
[0026]
Then, a support shaft 30 is erected vertically on the upper surface 12a of the base member 12 via a bearing (not shown) disposed on the upper surface 12a of the base member 12 (see FIG. 4). The table 14 is rotatably disposed on the upper end portion 30 a of the support shaft 30, and the central portion 14 </ b> P of the table 14 is positioned in the extending direction of the support shaft 30. Further, a gear 32 is disposed on the support shaft 30 located in the interior 12 e of the base member 12.
[0027]
On the other hand, a table rotating motor 34 is disposed in the interior 12 e of the base member 12. A motor gear 36 is fixed to the rotating shaft 34a of the motor 34, and the motor 34 is arranged so that the motor gear 36 and the gear 32 are engaged with each other. Therefore, the rotation of the rotating shaft 34 a of the motor 34 is transmitted to the support shaft 30 after the rotation speed is reduced (to ensure torque) via the motor gear 36 and the gear 32, and the motor 34 is driven. The support shaft 30 is rotated around the axis.
[0028]
Here, when the support shaft 30 rotates around the axis at the rotational force of the motor 34, that is, the speed and direction according to the rotational speed and the rotation direction of the motor 34, the support shaft 30 is rotated along with the rotation of the support shaft 30. The table 14 disposed on the rotating shaft rotates around the support shaft 30 (that is, the central portion 14P) as a rotation center (see arrows F and G shown in FIG. 4).
[0029]
In this embodiment, when the rotation direction of the table rotation motor 34 is a predetermined direction (for example, right rotation), the table 14 rotates counterclockwise (see FIG. 4) with the central portion 14P as the rotation center. Rotate in the direction indicated by arrow F).
[0030]
On the other hand, when the rotation direction of the motor 34 for rotating the table is the direction opposite to the predetermined direction (for example, counterclockwise rotation), the table 14 rotates in the clockwise direction about the rotation portion 14P (shown in FIG. 4). Rotate in the direction of arrow G).
[0031]
In addition, the upper surface 14a of the table 14 is located in parallel with the upper surface 12a of the base member 12, and the rotation plane in which the table 14 rotates around the central portion 14P coincides with the XY plane direction. Further, the rotational speed of the table 14 performed by rotating the support shaft 30 by the driving force of the table rotating motor 34 is set so as to correspond to the progressing speed of cutting of the workpiece 200 by the cutter 22. .
[0032]
The arm 20 is generally plate-shaped, and is supported by the upper end 18a of the support shaft 18 on the front side 20a, supported by the rear member 16 on the rear side 20b, and drilled in the central portion 20c. A cutter 22 as a tool is disposed in the through hole 20d.
[0033]
The front side 20 a of the arm 20 is rotatably disposed on the upper end side 18 a of the support shaft 18 via a bearing (not shown) disposed on the arm 20.
[0034]
A carriage base 40 is mounted at the central portion 20c of the arm 20 so as to be held at a certain height from the upper surface 14a of the table 14 and to be positioned in the through hole 20d.
[0035]
A motor 42 for raising and lowering the cutter is disposed on the upper surface 40a of the carriage base 40, and a screw 44 driven by the rotational force of the motor 42 is disposed on the side surface 40b in a state where its axial direction coincides with the Z-axis direction. Thus, the carriage base 40 is positioned and disposed at a predetermined height position in the Z-axis direction. The thread of the screw 44 is engaged with a thread groove formed in the carriage 46, and the carriage 46 is movably disposed on the side surface 40 b of the carriage base 40.
[0036]
The carriage 46 is provided with a motor 48 for rotating the cutter and a cutter holder 23 that supports the cutter 22. The cutter holder 23 includes a main shaft 24 formed in a substantially cylindrical body, a rotation shaft 26 rotatably supported on the inner peripheral side of the main shaft 24 via a bearing (not shown), and a tip end portion. The cutter 22 includes a blade portion 22a and is fixedly disposed on the rotating shaft 26, and a pulley 28 that is positioned above the main shaft 24 and is fixedly disposed on the rotating shaft 26. Yes.
[0037]
The position at which the cutter holder 23 is disposed on the carriage 46 is dimensioned so that the blade portion 22a of the cutter 22 supported by the cutter holder 23 can face the central portion 14P of the table 14. Is.
[0038]
When the rotational force of the motor 48 is transmitted to the pulley 28 via the belt 50 to rotate the pulley 28, the rotating shaft 26 rotates with the rotation of the pulley 28, and the cutter 22 rotates along the axis line with the rotation of the rotating shaft 26. Rotate around.
[0039]
Further, when the screw 44 rotates about the axis by the rotational force of the motor 42, the carriage 46 in which the thread groove is engaged with the thread of the screw 44 moves axially (that is, in the Z-axis direction) on the thread of the screw 44. ) Will move along. As a result, the carriage 46 moves in the vertical direction perpendicular to the surface 14a of the table 14, and the height position of the cutter 22 moves upward in the Z-axis direction according to the rotation of the motor 42 (in the direction indicated by the arrow H in FIG. 2). ) Or downward (in the direction of arrow I shown in FIG. 2).
[0040]
In this way, when the cutter 22 is rotated and the cutter 22 is moved in the Z-axis direction and the blade portion 22a of the cutter 22 contacts the workpiece 200, the workpiece 200 is cut by the blade portion 22a of the cutter 22. The
[0041]
A guide member 52 is disposed on the upper surface 20e of the rear side 20b of the arm 20, and the protruding portion 20g is disposed on the lower surface 20f of the rear side 20d so as to contact a plate 54 of the rear member 16 described later. (See FIG. 1) is formed.
[0042]
The guide member 52 includes an end surface 52a formed as a curved surface with a predetermined curvature, and a locking portion 52d formed on the back side 52b of the end surface 52a and having a hole 52c (see FIG. 5). The curved surface of the end surface 52a is symmetrical with respect to the range from the center position 52ac to the left end 52aL and the range from the center position 52ac to the right end 52aR.
[0043]
In this embodiment, the guide member 52 is made of cast iron, has a predetermined thickness, and the height H in the Z-axis direction (see FIG. 6B) is set to approximately 22 mm. Further, the radius of curvature of the end face 52a of the guide member 52 is set to about 250 mm.
[0044]
On the other hand, the rear member 16 on which the rear side 20b of the arm 20 is supported has an opening 16b in the front surface 16a corresponding to the height position of the arm 20 in the Z-axis direction. A plate 54 having an upper surface 54a coinciding with the XY plane direction is disposed in the interior 16c of the rear member 16. A protrusion 20g on the rear side 20d of the arm 20 located on the inner surface 16c of the rear member 16 with respect to the upper surface 54a of the plate 54 abuts on the upper surface 54a.
[0045]
Furthermore, in the interior 16c of the rear member 16, a swinging motor 56 in which a motor gear 58 is disposed on a rotating shaft 56a, a pulley 62 in which a gear 60 meshing with the motor gear 58 is disposed coaxially, A pulley 64 disposed so as to face the pulley 62 and a wire 66 stretched between the pulley 62 and the pulley 64 are positioned. In addition, as the wire 66, various wires can be used, and a wire whose surface is coated can also be used.
[0046]
Here, the wire 66 intersects along the curved surface of the end surface 52a of the guide member 52 disposed on the rear side 20d of the arm 20, and one end portion 66a is fixedly disposed on the guide member 52, and the other The end 66b is attached to the rear side 20b of the arm 20 and is fixedly disposed. That is, the wire 66 reaches the pulley 62 from the end portion 66 a fixedly disposed on the guide member 52, reaches the pulley 64 from the pulley 62, and intersects the curved surface of the end surface 52 a of the guide member 52 from the pulley 64. To the end 66b of the arm 20 which is fixedly disposed.
[0047]
FIGS. 5 and 6A, 6B, and 6C are explanatory views schematically showing the attachment state of the wire 66. One end portion 66a of the wire 66 is connected to the guide member 52. Along the end surface 52a, the left end portion 52aL side passes through the central position 52ac to the right end portion 52aR side, and is fixed to the hole 52c of the locking portion 52d by the attachment member 68. On the other hand, the other end 66b of the wire 66 extends along the end surface 52a of the guide member 52 from the right end 52aR side to the left end 52aL side through the center position 52ac. It is fixed to.
[0048]
At this time, in the end surface 52a of the guide member 52 having the height H, the wire 66 intersects so that the side reaching the end 66a of the wire 66 is positioned higher than the side reaching the end 66b. ing.
[0049]
Then, the rotation of the rotating shaft 56a due to the rotation of the swinging motor 56 is transmitted to the pulley 62 through the motor gear 58 and the gear 60 to cause the pulley 62 to rotate, and the pulley 62 rotates. As the wire 66 moves, the guide member 52 to which the end portion 66a of the wire 66 is fixed and the arm 20 to which the end portion 66b of the wire 66 is fixedly disposed are arranged on the support shaft 18. Rotate around the center of rotation.
[0050]
More specifically, when the rotation shaft 56a of the swinging motor 56 rotates in the arrow J direction, the pulley 62 rotates in the arrow K direction. Then, since the end portion 66a of the wire 66 is fixed to the guide member 52 disposed on the rear side 20b of the arm 20, the arm 20 is moved to the arrow by the wire 66 that moves as the pulley 62 and the pulley 64 rotate. Pulled in the L direction, the arm 20 rotates counterclockwise in the XY plane direction (the direction of the arrow L shown in FIGS. 3 and 5) about the support shaft 18 on the front side 20a of the arm 20 as the rotation center.
[0051]
On the other hand, when the rotating shaft 56a of the swinging motor 56 rotates in the arrow M direction, the pulley 62 rotates in the arrow N direction. Then, since the end portion 66 b of the wire 66 is fixed to the rear side 20 b of the arm 20, the arm 20 is pulled in the arrow Q direction by the wire 66 that moves as the pulley 62 and the pulley 64 rotate, and the arm 20 The arm 20 rotates clockwise in the XY plane direction (the direction of the arrow Q shown in FIGS. 5 and 7) with the support shaft 18 on the front side 20a as the center of rotation.
[0052]
Note that the speed of rotation of the arm 20 in the XY plane direction (see arrows L and Q shown in FIG. 5) performed by the movement of the wire 66 by the driving force of the swinging motor 56 is the workpiece by the cutter 22. It is set so as to correspond to the cutting speed of 200 cuttings.
[0053]
In the above configuration, the operation of the above-described three-dimensional cutting apparatus 10 will be described with reference to FIGS. 1 to 7.
[0054]
First, the workpiece 200 is placed on the table 14 of the three-dimensional cutting apparatus 10 in the state shown in FIGS.
[0055]
In the following description, the case where the position of the arm 20 of the three-dimensional cutting apparatus 10 in the XY plane direction is in the state shown in FIGS. 1 to 3 will be described as the initial state of the three-dimensional cutting apparatus 10. And
[0056]
In the initial state, the arm 20 of the three-dimensional cutting apparatus 10 rotates in a rotation plane coinciding with the XY plane direction in the XY plane direction (see an arrow Q shown in FIG. 7). Is located. On the other hand, in the Z-axis direction, the extending direction of the arm 20 coincides with the XY plane at a predetermined height position in the Z-axis direction and is positioned in a horizontal state (the state shown in FIG. 2).
[0057]
In such an initial state, the workpiece 200 placed on the table 14 of the three-dimensional cutting apparatus 10 is an object having a three-dimensional spatial extent, and the object has a predetermined shape. To do.
[0058]
In this embodiment, it is assumed that the workpiece 200 having a substantially disk shape is placed on the table 14. At this time, the workpiece 200 may be positioned by the vise 70 attached to the upper surface of the table 14. The processing area of the workpiece 200 is a circular area centered on the center 200P of the upper surface 200a of the workpiece 200 (see the broken line area in FIGS. 1, 3 and 4).
[0059]
Then, the operator faces the lower surface side of the workpiece 200 to the upper surface 14a of the table 14 so that the center 200P of the processing area of the upper surface 200a of the workpiece 200 coincides with the central portion 14P of the table 14. Then, the workpiece 200 is placed on the upper surface 14 a of the table 14. As a result, when the arm 20 moves to the left in the XY plane, the center 200P of the processing region of the workpiece 200 comes to face the blade portion 22a of the cutter 22.
[0060]
As described above, when the workpiece 200 is placed on the table 14 of the three-dimensional cutting apparatus 10 in the initial state, the microcomputer 100 performs the table rotation motor 34 and the cutter lifting / lowering operation based on the cutting data. The driving of the motor 42, the cutter rotating motor 48, and the swinging motor 56 are controlled.
[0061]
Specifically, the arm 20 is driven from the initial state (the state shown in FIG. 1) from the right side to the left side in FIG. (See arrow L shown in FIG. 3).
[0062]
At this time, the table 14 on which the workpiece 200 is placed is rotated about the support shaft 30 by the drive of the table rotation motor 34 (see arrow G shown in FIG. 4).
[0063]
Further, the cutter 22 that rotates about the axis by driving the motor 48 for rotating the cutter moves up and down in the Z-axis direction by driving the motor 42 for raising and lowering the cutter (see arrows H and I shown in FIG. 2).
[0064]
As a result, the cutter 22 moves in a three-dimensional direction in a circular processing region of the workpiece 200 that faces the cutter 22 along a spiral moving path from the outer peripheral side of the processing region toward the center 200P.
[0065]
At this time, when the cutter 22 rotated by the drive of the motor 48 comes into contact with the machining area of the workpiece 200, the workpiece 200 is cut by the blade portion 22 a of the cutter 22, and cutting is performed from the machining area of the workpiece 200. The three-dimensional shape indicated by the data is cut out.
[0066]
Then, the rotation from the right side to the left side in FIG. 3 on the rotation plane coinciding with the XY plane direction of the arm 20 (see the arrow L shown in FIG. 3) proceeds and reaches the radius of the circular machining region. Then, the blade portion 22a of the cutter 22 comes to face the center 200P of the processing area (see the state shown in FIG. 7). Thereby, cutting is completed in the entire processing region, and a series of cutting operations in the three-dimensional cutting device 10 is completed.
[0067]
After the series of cutting operations in the three-dimensional cutting apparatus 10 is completed, the cutter 22 is moved upward (see arrow H in FIG. 2), and the arm 20 is moved to the XY plane by driving the motor 56 for swinging. When rotating from the left side to the right side in FIG. 3 on the rotation plane coinciding with the direction (see arrow Q shown in FIG. 7), the initial state shown in FIGS. 1 to 3 is changed from the state shown in FIG. Return to.
[0068]
Thus, the rotation of the arm 20 in the XY plane direction (see arrow L shown in FIG. 3 or arrow Q shown in FIG. 7) and the rotation of the table 14 in the XY plane direction (see arrow F or arrow G shown in FIG. 4). The position of the workpiece 200 that the blade 22a of the cutter 22 faces changes in the X-axis direction and the Y-axis direction.
[0069]
Further, the amount of the blade 22a of the cutter 22 cut into the workpiece 200 by the driving force of the cutter lifting motor 42, that is, the position of the blade 22a of the cutter 22 relative to the workpiece 200 in the Z-axis direction changes. (See arrow H or arrow I shown in FIG. 2).
[0070]
That is, in the three-dimensional cutting apparatus 10, the drive of the motors 34, 42, 48, and 56 is controlled according to a predetermined resolution by the control of the microcomputer 100, and the cutter 22 that can move in the Z-axis direction is controlled. Since the workpiece 200 placed on the table 14 can move in the X-axis direction and the Y-axis direction, the relative positional relationship between the cutter 22 and the workpiece 200 changes in a three-dimensional direction. Thus, the workpiece 200 is three-dimensionally processed by the cutter 22.
[0071]
As described above, in the three-dimensional cutting apparatus 10 according to the present invention, the arm 20 rotates about the support shaft 18 in the XY plane direction, and the table 14 uses the support shaft 30 as the rotation center in the XY plane direction. Since the cutter 22 is arranged so as to rotate and move up and down in the Z-axis direction, the relative positional relationship between the workpiece 200 and the cutter 22 as a tool can be changed in a three-dimensional direction with a simple configuration.
[0072]
Therefore, according to the three-dimensional cutting apparatus 10 according to the present invention, two parallel extended in each of the three-dimensional directions essential to the conventional three-dimensional cutting apparatus described in the above-mentioned section “Prior Art”. Since it is not necessary to provide a special shaft, the number of parts can be reduced.
[0073]
For this reason, in the three-dimensional cutting apparatus 10 according to the present invention, the assembly efficiency is improved by reducing the complexity in the assembly process, and the entire three-dimensional cutting apparatus 10 is reduced in size and space. This can be realized and the cost can be reduced.
[0074]
In the three-dimensional cutting apparatus 10 according to the present invention, high accuracy is not required for various parts, and various adjustment operations such as reducing assembly errors or making the clearance appropriate. Since strictness is not required, workability and yield in the manufacturing process can be improved.
[0075]
Furthermore, since the three-dimensional cutting apparatus 10 according to the present invention has a simple configuration, it is possible to easily ensure rigidity by increasing the diameters of the support shafts 18 and 30, for example.
[0076]
Furthermore, in the three-dimensional cutting apparatus 10 according to the present invention, when the cutter 24 cuts the processing area of the workpiece 200 according to the cutting data, the cutter 22 has a spiral shape from the outer peripheral side of the processing area toward the center 200P. Since it moves in the three-dimensional direction according to the movement path, cutting in the entire machining area can be completed with high quality and in a short time.
[0077]
For example, in a conventional three-dimensional cutting apparatus, a tool as a tool performs cutting while linearly reciprocating within the processing area, or performs roughing and finishing, so that the tool is in the processing area. The entire area is scanned at least twice.
[0078]
However, according to the three-dimensional cutting apparatus according to the present invention, since it is not necessary to perform roughing and finishing twice separately, the tool does not scan the entire processing area twice, and the conventional cutting time is eliminated. Compared to, cutting can be completed in a very short time.
[0079]
Moreover, in the three-dimensional cutting apparatus 10 according to the present invention, the wire 66 is attached to cross the rear side 20b of the arm 20, and the guide member 52 having the arcuate end surface 52a is also disposed. The rotation of the arm 20 in the XY plane direction about the support shaft 18 of the arm 20 is performed very smoothly and with high accuracy, and the processing of the workpiece by the tool such as the cutter 22 is further improved in quality. be able to.
[0080]
For example, as shown in FIGS. 8C and 8D, when the guide member is not disposed on the arm and both ends of the wire are simply fixed to the guide member without crossing the wire, the arm in the XY plane direction As the wire rotates, a fleet angle is generated and the wire has an angle, making it difficult for the arm to rotate smoothly.
[0081]
On the other hand, as shown in FIGS. 8A and 8B, in the three-dimensional cutting apparatus 10 according to the present invention, the wires intersect along the arcuate end surface of the guide member, and both ends thereof are guides. Since it is fixed to the member, regardless of the position of the arm rotating in the XY plane direction, the wire is always drawn stably in the direction of the rotation tangent of the arm. Thus, according to the present invention, the generation of the fleet angle is suppressed, and the rotation of the arm 20 by the wire 66 is very smooth because it is different from the rotation on the rotation shaft that requires a very large output. In addition, it is highly accurate and can realize high-quality processing efficiently in a short time.
[0082]
The embodiment described above may be modified as described in the following (1) to (5).
[0083]
(1) In the above-described embodiment, the motor is used as the drive means. However, the present invention is not limited to this, and various drive sources may be used. Various changes may be made as the transmission means for the driving force.
[0084]
(2) In the above-described embodiment, the wires 66 are mounted so as to cross each other as shown in FIGS. 6A, 6B, and 6C. However, the present invention is not limited to this. For example, in the end surface 52a of the guide member 52 having the height H, the wire 66 is crossed so that the side reaching the end 66b of the wire 66 is positioned higher than the side reaching the end 66a. Alternatively, the place where the ends 66a and 66b of the wire 66 are attached to the arm 20 and the fixing method thereof may be changed according to the positional relationship with the pulleys 62 and 64, and the like.
[0085]
(3) In the above-described embodiment, the guide member 52 is disposed on the rear side 20b of the arm 20. However, the guide member 52 and the arm 20 are not limited to this. May be formed integrally, and an end where the wires intersect may be formed on the rear side 20b of the arm 20. Furthermore, it is needless to say that the arc-shaped end face guided by the crossing of the wire 66 may be appropriately changed in various dimensions such as the material and curvature.
[0086]
(4) In the above-described embodiment, the case where the processing apparatus according to the present invention is implemented as a three-dimensional cutting apparatus has been described. However, the present invention is not limited to this, and the type of tool is changed. For example, various processing apparatuses may be used. For example, a pen may be provided in place of the cutter 22 to draw on the workpiece, or an inkjet nozzle may be provided in place of the cutter 22 to print on the workpiece. Alternatively, a polishing tool may be provided instead of the cutter 22 to polish the workpiece.
[0087]
(5) You may make it combine the above-mentioned embodiment and the modification shown in said (1) thru | or (4) suitably.
[0088]
【The invention's effect】
Since the present invention is configured as described above, the relative positional relationship between the workpiece and the tool changes in a three-dimensional direction with a simple configuration, and the number of parts can be reduced. It is possible to provide an advantageous effect that it is possible to provide an inexpensive processing apparatus with a small number of adjustment operations.
[0089]
Moreover, according to this invention, there exists an outstanding effect that a workpiece can be processed now with high precision in a short time.
[Brief description of the drawings]
FIG. 1 is a schematic configuration explanatory view (perspective view) of an example of an embodiment of a three-dimensional cutting apparatus according to the present invention, and is a schematic configuration explanatory view (perspective view) showing a three-dimensional cutting apparatus in an initial state. .
FIG. 2 is a schematic configuration explanatory diagram (left side view) corresponding to the view along arrow A in FIG. 1;
FIG. 3 is a schematic configuration explanatory view (top view) corresponding to the view taken along arrow B in FIG. 1;
4 is an explanatory diagram (perspective view) showing an enlarged schematic configuration of a main part centering on the table of FIG. 1; FIG.
FIG. 5 is an explanatory view schematically showing a wire attachment state.
6A and 6B are explanatory views schematically showing the state of attachment of the wire, wherein FIG. 6A is an explanatory view corresponding to the C arrow view in FIG. 5, and FIG. 6B is the D arrow view in FIG. It is explanatory drawing corresponding, (c) is explanatory drawing corresponding to the E arrow directional view in FIG.
7 is a schematic configuration explanatory diagram (top view) corresponding to FIG. 3, and is a schematic configuration explanatory diagram (top view) showing a three-dimensional cutting apparatus in a state where the blade portion of the cutter is opposed to the center of the processing region. is there.
FIGS. 8A and 8B are explanatory views schematically showing the operation of the three-dimensional cutting apparatus according to the present invention, and FIGS. 8C and 8D schematically show the operation of the conventional three-dimensional cutting apparatus. It is explanatory drawing shown in figure.
[Explanation of symbols]
10 3D cutting machine
12 Base member
12a Top surface
12b rear side
12c front side
12d bottom
12e inside
14 tables
14a upper surface
14P central part
16 Rear member
16a front
16b opening
16c inside
18 Spindle
18a upper end
20 arms
20a front side
20b rear side
20c central part
20d through hole
20e top surface
20f bottom surface
20g protrusion
22 Cutter
22a Blade part
23 Cutter holder
24 Spindle
26 Rotating shaft
28 pulley
30 Spindle
30a Upper end
32 gear
34 motor
34a Rotating shaft
36 motor gear
40 Carriage base
40a Top view
40b side
42 motor
44 screw
46 Carriage
48 motor
50 belts
52 Guide member
52a end face
52ac center position
52aL left end
52aR right end
52b Back side
52c hole
52d Locking part
54 plates
54a upper surface
56a Rotating shaft
58 Motor gear
56 motor
60 gear
62, 64 pulley
66 wire
66a, 66b end
68, 69 Mounting member
70 vice
100 microcomputer
200 Workpiece
200a top surface
200P center

Claims (2)

In a processing device that processes a workpiece based on predetermined data,
A fixed base member;
On the base member, a table that is rotatably disposed on a rotation plane that coincides with the XY plane direction of the XYZ orthogonal coordinate system with a center portion as a rotation center, and on which an object can be placed on the upper surface;
A rotating member that is rotatably arranged on a rotation plane that coincides with the XY plane direction around one end side as a rotation center;
A first pulley rotated by a driving force of a driving device;
A second pulley disposed opposite the first pulley;
Both ends are fixedly disposed on the rotating member, one end portion fixedly disposed on the rotating member leads to the first pulley, and the first pulley to the second pulley. To the other end of the rotating member that crosses the other end of the rotating member and is fixedly disposed on the rotating member; and
A tip is disposed on the rotating member so as to be movable along the Z-axis direction, and a tip portion is arranged so as to face the central portion of the table as the rotating member rotates on a rotating plane that coincides with the XY plane direction. A processing apparatus having a positioned tool. The processing apparatus according to claim 1,
The other end side of the rotating member intersecting with the wire has an end surface formed by a curved surface having a predetermined curvature, and the wire intersects along the curved surface of the end surface.

Images