JP3619334B2 - Automatic chip removal device in machining center - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic chip removing device that automatically removes chips generated during machining of a workpiece, and more particularly to a technique for automating a chip removing operation in a machining center with a simple configuration.
[0002]
[Prior art]
Conventionally, a machining center has been used at a manufacturing site for the purpose of producing a product of stable quality according to a production plan regardless of the skill level of an operator. This machining center is equipped with an automatic tool changer (ATC) that automatically changes tools, and can perform various processes such as chamfering, drilling, boring, tapping, etc. with one machine tool. .
[0003]
[Problems to be solved by the invention]
However, since chips (chips) are generated during the processing of the workpiece, there is a possibility that a defect due to the chips may occur depending on the processing contents. For example, when chamfering is performed after drilling, if chips remain in the drilled part, the chamfering tool may be damaged by the chips, and the operator temporarily stops the machining center after drilling. Therefore, it was necessary to carry out a chip removal operation.
[0004]
For this reason, even if automation is promoted in the product production line, it is not possible to omit a dedicated worker who performs chip removal work of the machining center, and this chip removal work has become a bottleneck for labor saving. In addition, since the chip removal work is performed manually with the line temporarily stopped, the worker who performs the chip removal work cannot be assigned to other work, for example, monitoring work of other machine tools.
[0005]
Therefore, in view of the conventional problems as described above, the present invention automates the chip removal operation in the machining center, and thereby can improve the production efficiency of the production line and promote labor saving. The purpose is to provide.
[0006]
[Means for Solving the Problems]
For this reason, the invention described in claim 1 includes an automatic tool changer that has a spindle that can move in at least three directions of the X axis, the Y axis, and the Z axis, and that automatically changes a tool attached to the spindle. In a machining center for machining a workpiece based on a work instruction inputted in advance, a cylindrical permanent magnet and a cylinder made of a non-magnetic material in which the permanent magnet is slidably fitted in the axial direction and whose tip is closed A case having a shape, a handle attached on the substantially axial center of the permanent magnet, an enclosure for supporting the shaft portion of the handle so as to be slidable and surrounding the handle, and closing the base end portion of the case; a detachable element for attaching the opposite end of the enclosure freely detachable to the main axis of the machining center, is configured to include a, a utilizing magnetic force of the permanent magnet chip removal tool for removing chips from the workpiece, the Mashinin One tool used in the center, with the attachable to the machining center of the main shaft with its axis oriented vertically, while attaching a round bar wood shaft to the machining center extending in a substantially horizontal direction, the machining center The chip removal work from the workpiece by the chip removal tool, and after the chip removal work, the chip removal tool is moved to the round bar, and the handle of the chip removal tool is hooked on the round bar. The operation of moving the permanent magnet away from the bottom of the case is inputted in advance.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows an overall configuration diagram in which an automatic chip removing tool according to the present invention is mounted on a three-axis control vertical machining center (hereinafter referred to as “machining center”) equipped with an automatic tool changer (ATC).
[0010]
The machining center 1 has a configuration in which a spindle (main shaft) 2 is oriented in the vertical direction, and the relative motion between a tool and a workpiece can be moved in three directions, that is, an X axis, a Y axis, and a Z axis. Here, the X-axis, the Y-axis, and the Z-axis mean those in which the relative motion between the tool and the workpiece is in the left-right direction, the front-rear direction, and the up-down direction, respectively, standing in front of the machine. The position control of the X axis, the Y axis, and the Z axis is performed by software by numerical control based on a work instruction input in advance. Further, an automatic tool changer (not shown) is attached in the vicinity of the spindle 2, and the tool mounted on the spindle 2 is automatically changed according to the machining content of the workpiece.
[0011]
Further, a round bar 4 formed in an L shape is attached to the table 3 of the machining center 1 in an upside down state.
A feature of the present invention resides in that a chip removing tool 5 for removing chips from a workpiece is attached as one of the tools attached to the spindle 2.
As shown in FIG. 2, the chip removing tool 5 includes a chip removing unit 5a that actually removes chips and a mounting unit 5b that mounts the chip removing unit 5a on the spindle 2 freely. . The chip removing portion 5a includes a cylindrical permanent magnet (hereinafter referred to as “magnet”) 7 to which a T-shaped handle 6 is attached, and the magnet 7 is freely slidable in the axial direction and has a tip portion thereof. A cylindrical case 8 made of a non-magnetic material such as plastic to be closed, and an enclosure for supporting the shaft portion 6a of the handle 6 so as to slide freely and enclosing the periphery of the handle 6 while closing the base end portion of the case 8. 9. In addition, the thing of the structure demonstrated above is a commercial item which removes a chip from a workpiece | work using the magnetic force of a permanent magnet. Further, the handle 6 is not limited to the T-shape, and may have any shape as long as the magnet 7 moves by moving the handle 6.
[0012]
Further, the mounting portion 5b is a pair of side plate portions that sandwich one side portion of the enclosure 9 while the plate surface extends in a substantially vertical direction and restricts the rotation of the handle 6 in order to mount the chip removal portion 5a on the spindle 2. 10, a pair of side plate portions 11 with the plate surface extending in a substantially vertical direction and sandwiching the upper end of the other end of the enclosure 9, a plate surface extending in a substantially horizontal direction, and the upper end portions of the side plate portions 10 and 11 are fixed by welding or the like. The horizontal plate portion 12, the columnar portion 13 extending substantially in the vertical direction, and fixed to the upper surface of the horizontal plate portion 12 by welding or the like, and the cylindrical portion 13 is fitted and attached to the spindle 2. The detachable part 14 which becomes a part, and the volt | bolt 15 fastened by the internal thread part formed in the detachable part 14 in order to fix the cylindrical part 13 and the detachable part 14 are comprised. In addition, the mounting part 5b is good also as a structure which fixes the desorption part 14 directly to the upper end part of the enclosure 9 of the chip removal part 5a by welding etc. FIG.
[0013]
The mounting portion 5b is sandwiched between the side plate portions 10 and 11, and is fastened by bolts (not shown) inserted through bolt insertion holes 10a and 11a provided in the side plate portions 10 and 11.
The chip removal operation in the present embodiment will be described. When removing chips from the workpiece, the automatic tool changer is used to mount the chip removal tool 5 on the spindle 2 and move the X axis and the Y axis. The workpiece is positioned vertically below the spindle 2. When the Z-axis is moved vertically downward, the chip removal tool 5 approaches the workpiece while the magnet 7 is in contact with the bottom of the case 8 as shown in FIG. Then, the magnetic force of the magnet 7 acts on the chips 21 attached to the workpiece 20 via the case 8, and the chips 21 are attracted to the lower outer surface of the case 8.
[0014]
On the other hand, when removing the chip 21 from the chip removing tool 5, as shown in FIG. 4, the X axis, the Y axis, and the Z axis are moved and below the handle 6 of the chip removing tool 5, The horizontal bar 4a of the round bar 4 attached to the machining center 1 is positioned. As shown in FIG. 3B, when the Z-axis is moved downward, the handle 6 is lifted upward by the horizontal bar 4a, and the magnet 7 is moved away from the bottom of the case 8. Then, the magnetic force acting on the chip 21 is weakened, and the chip 21 falls from the lower outer surface of the case 8.
[0015]
That is, a chip removing tool is prepared as one of the machining center tools, the chip removing tool is attached as a machining center processing instruction, and the above operation is performed with the chip removing tool attached. The chip removal work can be automated simply by placing it. This automation is a very useful technique because it can be realized by slightly modifying a commercially available chip removal tool and changing the work instruction content. Moreover, in order to remove the chips adsorbed by the chip removing tool, a means for moving the handle of the chip removing tool, that is, a round bar attached to the machining center and a handle of the chip removing tool are hooked on the round bar. Since it is only necessary to input an instruction to move the handle, the suction force of the chip removing tool can be easily maintained at a constant level.
[0016]
And by providing such a chip removing tool, an operator for the chip removing work in the machining center becomes unnecessary, saving one person, improving production efficiency and reducing production cost. Is possible.
Note that the present invention is not limited to a 3-axis control vertical machining center, for example, a process of machining a workpiece using a 4-axis control or more vertical machining center, a 3-axis control or more horizontal machining center, or a multi-axis robot. Needless to say, this is applicable.
[0017]
【The invention's effect】
As described above, according to the first aspect of the present invention, the chip removal tool is prepared as one of the machining center tools, and the chip removal operation from the workpiece by the chip removal tool is input in advance. Only then can the chip removal work be automated. This eliminates the need for an operator for chip removal work at the machining center, saving one person, improving production efficiency, and reducing production costs.
[0018]
At this time, it is possible to make one of the tools that can be used in the machining center by slightly modifying a commercially available chip removal tool. Moreover, since the chip can be automatically removed from the chip removing tool after the chip removing operation, the adsorption force of the chip removing tool can be easily maintained at a constant level.
[Brief description of the drawings]
FIG. 1 is an overall view showing an embodiment of an automatic chip removing device according to the present invention. FIG. 2 is a detailed view of the chip removing tool. FIG. 3 is an operation explanatory view of the chip removing tool. (A) Operation diagram when removing chips from the workpiece, (b) Operation diagram when removing chips from the chip remover. [Fig. 4] When removing chips from the chip remover. Machining center operation diagram 【Explanation of symbols】
DESCRIPTION OF SYMBOLS 1 Machining center 2 Spindle 4 Round bar 5 Chip removal tool 6 Handle 7 Permanent magnet 8 Case 9 Enclosure 14 Mounting part

Claims (1)

It has a spindle that can move in at least three directions, X-axis, Y-axis, and Z-axis, and is equipped with an automatic tool changer that automatically changes the tool mounted on the spindle, and works based on pre-input work instructions In machining centers that process
A cylindrical permanent magnet, a cylindrical case made of a nonmagnetic material in which the permanent magnet is slidably fitted in the axial direction and whose tip is closed, and a handle attached on the substantially axial center of the permanent magnet The shaft portion of the handle is slidably supported, and the case is closed so that the base end portion of the case is closed while surrounding the handle, and the end portion of the enclosure opposite to the case is attached to the spindle of the machining center so as to be detachable. A chip removing tool that is configured to include a desorption part and removes chip from a workpiece using the magnetic force of a permanent magnet, and one of the tools used in the machining center has an axis oriented vertically. The mounting shaft can be mounted on the spindle of the machining center, and a round bar extending in a substantially horizontal direction is attached to the machining center,
In the machining center, the chip removal work from the workpiece by the chip removal tool, and after the chip removal work, the chip removal tool is moved to the round bar, and the handle of the chip removal tool is changed to a round bar. An automatic chip removing device for a machining center, wherein an operation of hooking a permanent magnet in a case away from the bottom of the case is input in advance.

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