Workpiece processing equipment

Abstract

To provide a workpiece processing device capable of easily processing even a large-diameter workpiece or a deformed workpiece.SOLUTION: This workpiece processing device comprises: workpiece holding means 4 in a base column 2; a swing shaft 6 and a swing shaft drive motor 7 for driving the swing shaft 6 in the base column 2; and a turret drive motor for attaching a swing arm 8 swingably to the swing shaft 6 and a turret turn shaft 9 to the tip of the swing arm 8 and driving the turret turn shaft 9. A turret 10 is attached to the turret turn shaft 9; a first processing tool 11 of a large diameter and a first processing tool drive motor for driving the first processing tool 11 are attached to the turret 10; a second processing tool smaller in diameter than the first processing tool 11 and a second processing tool drive motor for driving the second processing tool are attached to the turret 10; and the axis of the swing shaft 6 and the processing points of the first and second processing tools 11 and 12 are offset.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present invention relates to a workpiece processing apparatus that processes a workpiece using a plurality of processing tools such as grinding tools. [Background technology]

[0002] A workpiece processing device suitable for deburring castings by grinding is described in Patent Document 1. In order to enable grinding of fine structural parts that cannot be ground with a large, disk-shaped grinding tool, the workpiece processing device uses three types of grinding tools to enable grinding of fine structural parts, and is equipped with a first processing tool with a large diameter, a second processing tool with a smaller diameter than the first processing tool, and a third processing tool with a smaller diameter than the first processing tool, with the second processing tool and third processing tool being rotatable around the rotation axis of the first processing tool. This workpiece processing device can process even the finest structural parts by using three different types of processing tools.

[0003] However, because the second and third processing tools are rotatably mounted around the rotation axis of the large first processing tool, the distance between the rotation axis of the first processing tool and the rotation axes of the second and third processing tools cannot be made large in order to reduce the size of the workpiece processing device, which limits the machining of large-diameter workpieces or recessed areas of curved parts of irregularly shaped workpieces. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5658799 Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a workpiece machining device that can easily machine large-diameter workpieces and irregular-shaped workpieces. [Means for solving the problem]

[0006] In order to solve the above problems, a workpiece machining device according to claim 1 comprises a base column having a workpiece holding means, a swing shaft and a swing shaft drive motor for driving the swing shaft on the base column, a swing arm swingably attached to the swing shaft, a turret rotation shaft attached to the tip of the swing arm and a turret drive motor for driving the turret rotation shaft, a turret attached to the turret rotation shaft, a large-diameter first machining tool attached to the turret and a first machining tool drive motor for driving the first machining tool, and a large-diameter first machining tool attached to the turret. A second processing tool having a smaller diameter than the tool and a second processing tool drive motor for driving the second processing tool are respectively attached, and the axis of the swing shaft and the processing point of the first processing tool and the processing point of the second processing tool are offset in the axial direction of the rotation axes of the first processing tool and the second processing tool, the axis of the turret rotation shaft has an axis parallel to the axis of the swing shaft, the axes of the first processing tool and the second processing tool extend radially from the axis of the turret rotation shaft, and the axis of the second processing tool is positioned closer to the base column than the axis of the first processing tool. forward The offset is in the separation direction. The invention according to claim 2 is such that at least one additional processing tool having an axis extending radially from the axis of the turret rotation shaft is attached to the turret. The invention according to claim 3 is such that at least one auxiliary processing tool having an axis parallel to the axis of the turret rotation shaft is attached to the turret. The invention of claim 4 has a structure in which the swing axis and turret rotation axis are hollow shafts, wiring and piping are housed within the hollow shafts, and a partition wall is provided to separate the workpiece processing area from other areas. [Effects of the Invention]

[0007] According to the invention of claim 1, since the first processing tool and the second processing tool are attached to the turret, when a large-diameter workpiece or an odd-shaped workpiece is processed with the first processing tool, the second processing tool does not interfere with the processing. Also, when a workpiece is processed with the second processing tool, the first processing tool does not interfere with the processing. The turret rotation shaft has an axis parallel to the axis of the swing shaft, the axes of the first processing tool and the second processing tool extend radially from the axis of the turret rotation shaft, and the axis of the second processing tool is positioned closer to the base column than the axis of the first processing tool. forward Since it is offset in the separation direction, the second processing tool, which is a small-diameter processing tool, is further separated from the base column, making it easier to process deeper areas of the workpiece by increasing the depth of the tool. According to the invention of claim 2, at least one additional processing tool having an axis extending radially from the axis of the turret rotation axis is attached to the turret, so that the additional processing tool enables workpiece processing work to be carried out more efficiently. According to the invention of claim 3, at least one auxiliary processing tool having an axis parallel to the axis of the turret rotation shaft is attached to the turret, so that a wider variety of processing operations can be performed. According to the invention of claim 4, the swing shaft and the turret rotation shaft are hollow shafts, wiring and piping are housed inside the hollow shafts, and a partition wall is provided to separate the workpiece processing area from the other area. Therefore, even if sparks fly during machining in the work area, they will not affect the electrical wiring, allowing for safe operation. Also, even if chips or dust fly into the machining area during machining, they will not have a negative effect on the area on the base column outside the machining area. Cleaning work can also be done easily by limiting it to the work area. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 10 is a perspective view showing a state in which a large workpiece is machined by a first machining tool. [Figure 2] FIG. 2 is a plan view of FIG. [Figure 3] FIG. 10 is a perspective view showing a state in which a large workpiece is machined by a second machining tool. [Figure 4] FIG. 4 is a left side view of FIG. 3. [Figure 5] FIG. 10 is a perspective view showing a state in which a large workpiece is machined by a third machining tool. [Figure 6] FIG. 6 is a right side view of FIG. 5. [Figure 7] FIG. 10 is a perspective view showing a state in which an irregularly shaped workpiece is machined by a third machining tool. [Figure 8] FIG. 8 is a right side view of FIG. 7. [Figure 9] FIG. 2 is a perspective view of the main part of the workpiece processing device as seen from the rear side. [Figure 10] FIG. 10 is a plan view of the entire device with the ceiling cover and a partial cover of the swing arm removed. [Figure 11] FIG. 2 is a perspective view of the processing unit with a part of the cover removed. [Figure 12] FIG. 12 is a plan view of FIG. [Figure 13] FIG. 12 is a front view of FIG. [Figure 14] FIG. 10 is a perspective view showing a state in which a large workpiece is machined with an auxiliary machining tool. [Figure 15] FIG. 15 is a plan view of FIG. [Figure 16] FIG. 10 is a perspective view of a main part showing a state in which an irregular-shaped workpiece is machined in a conventional example. [Figure 17] FIG. 17 is a side view of the main part of FIG. 16. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. A workpiece machining device 1 according to an embodiment of the present invention includes a base column 2 (workpiece support base 3) equipped with a workpiece holding means 4, a base column 2 (oscillating shaft base 5) equipped with an oscillating shaft 6 and an oscillating shaft drive motor 7 that drives the oscillating shaft 6, an oscillating arm 8 attached to the oscillating shaft 6 so as to be able to oscillate (turn), a turret rotating shaft 9 attached to the tip of the oscillating arm 8, a turret 10 attached to the turret rotating shaft 9, and a first processing tool 11, a second processing tool 12, and a third processing tool 13 attached to the turret 10.

[0010] The axis (axial center) 14 of the swing shaft 6 is oriented horizontally and in the front-to-rear direction (the direction toward and away from the center axis of the base column) (Figs. 12 and 13). The swing arm 8 swings in the direction of arrow A in Fig. 13 within a vertical plane (a plane perpendicular to the axis 14 of the swing shaft 6) around the axis 14 of the swing shaft 6. The turret rotation shaft 9 has an axis 22 parallel to the axis 14 of the swing shaft 6.

[0011] The turret 10 is fitted with a large-diameter, disk-shaped first processing tool 11 and a first processing tool drive motor 15 that drives the first processing tool 11, a second processing tool 12 that is smaller in diameter than the first processing tool 11 and a second processing tool drive motor 16 that drives the second processing tool 12, and a third processing tool 13 that is smaller in diameter than the first processing tool 11 and a third processing tool drive motor 17 that drives the third processing tool 13. By using these three types of processing tools 11, 12, and 13 appropriately, even the finer details of the workpiece W can be processed.

[0012] Of the first processing tool 11 to the third processing tool 13, the large-diameter first processing tool 11 and the second processing tool 12 smaller in diameter than the first processing tool 11 are essential, but the third processing tool 13 is an additional processing tool that can be added as needed. In the drawing, the second processing tool 12 is shown as having a diameter slightly larger than the third processing tool 13, but this is not limited to this, and the second processing tool 12 can also be a processing tool with a smaller diameter than the third processing tool 13.

[0013] The first processing tool 11 rotates around the axis 19 of its rotation shaft. Similarly, the second processing tool 12 rotates around the axis 20 of its rotation shaft. The third processing tool 13 rotates around the axis 21 of its rotation shaft. The axis 20 of the rotation shaft of the second processing tool 12 and the axis 21 of the rotation shaft of the third processing tool 13 are the same axis. However, they may be different axes. The axes 19 , 20 , 21 of the first processing tool, the second processing tool, and the third processing tool extend radially relative to the axis 22 of the turret rotation shaft 9 .

[0014] 11 to 13 show a state in which a part of the cover of the turret section has been removed, and show how the drive motors 15, 16, 17, and 18 and the wiring and piping are housed within the cover.

[0015] 13 in a vertical plane (a plane perpendicular to the axis 22 of the turret rotation shaft 9) about the axis 22 of the turret rotation shaft 9. The rotation of the turret 10 is driven by a turret drive motor 18.

[0016] The angle formed by the axis 19 of the first processing tool 11 and the axis 20 of the second processing tool 12 is 90°, the angle formed by the axis 19 of the first processing tool 11 and the axis 21 of the third processing tool 13 is 90°, and the angle formed by the axis 20 of the second processing tool 12 and the axis 21 of the third processing tool 13 is 180°. Note that the angles formed by the processing tools 11, 12, and 13 are not limited to these, and for example, they may each be attached at an angle of 120°. Any attachment angle may be used as long as it does not cause interference with other processing tools and hinder the processing operation when any of the first to third processing tools 11, 12, and 13 is used. The above shows three processing tools, the first to third processing tools, attached to the turret 10, but it is also possible to attach additional processing tools (a fourth processing tool, a fifth processing tool, etc.) having axes extending radially from the axis 22 of the turret rotation shaft 9.

[0017] The axis 20 of the rotation shaft of the second processing tool 12 and the axis 21 of the rotation shaft of the third processing tool 13 are offset (23) forward (away from) the base column 2 (oscillating shaft base 5) or the swing arm 8 from the axis 19 of the rotation shaft of the first processing tool 11 (see Figure 12, etc.). This allows the second processing tool 12 and the third processing tool 13, which are small-diameter processing tools, to be further spaced from the base column 2 (oscillating shaft base 5), deepening the recess and making it easier to process deeper areas of the workpiece.

[0018] The axial distances from the axis (turret rotation center) 22 of the turret rotation shaft 9 to the machining point of the first processing tool 11, the machining point of the second processing tool 12, and the machining point of the third processing tool 13 are approximately the same. This makes it easy to teach the processing program.

[0019] The axis 14 of the swing shaft 6 is offset (24) (for example, about 10 mm) from the machining point of the first processing tool 11, the machining point of the second processing tool 12, and the machining point of the third processing tool 13 (FIG. 12). FIGS. 12 and 13 show the state in which the axis 14 of the swing shaft 6 is offset (24a) from the machining point of the first processing tool 11. Regarding the offset with the second processing tool 12, if the turret 10 is rotated 90° to the right in FIG. 13, it can be seen that the axis 14 of the swing shaft 6 is offset (24b) from the machining point of the second processing tool 12. Similarly, regarding the offset with the third processing tool 13, if the turret 10 is rotated 90° to the left in FIG. 13, it can be seen that the axis 14 of the swing shaft 6 is offset (24c) from the machining point of the third processing tool 13.

[0020] The swing shaft 6 and the turret rotation shaft 9 are hollow shafts that house wiring and piping 25. The swing arm 8 is also hollow, with the wiring and piping 25 passing through it (Figs. 9 and 10). Note that the wiring and piping 25 is shown representatively with a thick line, but in reality, multiple wires and piping pass through the hollow shafts 6, 9 and the hollow swing arm 8. The wiring and piping 25 are connected to a control device 26 and the like at the rear.

[0021] The drive motor housings of the processing tools 11, 12, and 13 are covered with covers, as are the arms and drive motors of the workpiece holding means 4.

[0022] As shown in Figures 9 and 10, partition walls (partition plates) 27 are provided between the oscillating shaft 6 and the oscillating arm 8, and between the workpiece holding means 4 and the workpiece support base 3, separating the workpiece processing area 28 from other areas (the area on the base column 2 side, and the area accommodating the base column 2 and the control device 26). This partition wall 27 protects the equipment and control device 26 on the base column 2 side from sparks, chips, etc. generated during workpiece machining, thereby enhancing the safety of the device. The workpiece processing device 1 performs processing work by sealing the processing work area 28 with side walls 30, a door 31, and a ceiling (not shown). The processing work can be observed through a transparent window.

[0023] The workpiece holding means 4 has a first arm 33, a second arm 34 connected to the first arm 33, and a workpiece clamping portion 35 at the tip of the second arm 34, and holds the workpiece W to be machined. The first arm 33 is driven by a first arm drive motor 36, and the second arm 34 is driven by a second arm drive motor 37. The workpiece W clamped by the workpiece clamping portion 35 can be rotated by a workpiece drive motor 38. The workpiece holding means 4 is attached to the workpiece support base 3 so as to be movable up and down. Reference numeral 39 denotes a vertical movement drive motor. The workpiece holding means 4 has a first arm 33 and a second arm 34 that move in a horizontal plane, are moved up and down by a vertical movement mechanism 40, and the workpiece W is rotated at any angle by the workpiece clamping portion 35, thereby positioning and holding the workpiece W at any position.

[0024] When the first processing tool 11 processes the workpiece W (large workpiece W1), the other second processing tool 12 and third processing tool 13 are sufficiently far away from the workpiece W1 so as not to interfere with the processing of the workpiece W1 (Figures 1 and 2). When the second processing tool 12 processes the workpiece W (large workpiece W1), the other first processing tool 11 and third processing tool 13 are sufficiently far away from the workpiece W1 so as not to interfere with the processing of the workpiece W1 (Figures 3 and 4). When the workpiece W (large workpiece W1) is processed with the third processing tool 13, the other first processing tool 11 and second processing tool 12 are sufficiently far away from the workpiece W1 so as not to interfere with the processing of the workpiece W1 (Figures 5 and 6).

[0025] Furthermore, when the third processing tool 13 processes the recessed V-shaped portion of the irregular-shaped workpiece W2, the other first processing tool 11 and second processing tool 12 do not interfere with the processing work (FIGS. 7 and 8). Similarly, when the second processing tool 12 processes the recessed V-shaped portion of the irregular-shaped workpiece W2, the other first processing tool 11 and third processing tool 13 do not interfere with the processing work. As described above, the workpiece machining apparatus 1 according to this embodiment can easily perform machining of a large workpiece W1 or an irregularly shaped workpiece W2. When machining an irregularly shaped workpiece W2, machining can be performed up to the center of the clamper (reference numeral 41).

[0026] In contrast, in the conventional workpiece machining device 50, it is not possible to provide a large distance between the rotation axis 52 of the large-diameter first machining tool 51 and the rotation axis 54 of the small-diameter second machining tool 53 (or third machining tool). For this reason, as shown in Figures 16 and 17, when attempting to machine a recessed portion of the V-shape of the irregular-shaped workpiece W2 with the small-diameter second machining tool 53, the large-diameter machining tool 51 interferes with the workpiece W2, making it impossible to proceed with the machining operation.

[0027] 14 and 15 show a workpiece machining apparatus 1 according to another embodiment of the present invention, which is the same as described above in that a first machining tool 11 and a second machining tool 12 having axes extending radially from the axis 22 of the turret rotating shaft 9 are attached to the turret 10, but an auxiliary machining tool 43 having an axis 42 parallel to the axis 22 of the turret rotating shaft 9 is attached to the turret 10. By attaching such an auxiliary machining tool 43, it is possible to perform machining operations on an even more diverse range of workpieces. It is also possible to add further auxiliary machining tools having axes parallel to the axis 22 of the turret rotating shaft 9. [Explanation of symbols]

[0028] 1 Workpiece processing equipment 2 base columns 3 Work support base 4 Workpiece holding means 5 Swing axis base 6 Oscillating shaft 7. Oscillating shaft drive motor 8 Swing Arm 9 Turret rotation axis 10 Turrets 11 1st processing tool 12 2nd processing tool 13 3rd processing tool (additional processing tool) 14 Axis of swing shaft 15 First tool drive motor 16 Second tool drive motor 17 Third tool drive motor 18 Turret drive motor 19 Axis of the rotation axis of the first processing tool 20 Axis of the rotation shaft of the second processing tool 21 Axis of the rotation axis of the third processing tool 22 Axis of turret rotation axis 23 offset 24(24a,24b,24c) offset 25 Wiring and piping 26 Control device 27 Partition 28 Machining work area 30 side wall 31 Door 33 First Arm 34 Second Arm 35 Work clamping part 36 First arm drive motor 37 Second arm drive motor 38 Work drive motor 39 Vertical drive motor 40 Vertical movement mechanism 41 Clamper 42 Axis of auxiliary processing tool 43 Auxiliary processing tools double work W1 Large workpiece W2 irregular shaped workpiece

Claims

1. The base column is provided with a workpiece holding means, the base column is provided with a swing shaft and a swing shaft drive motor for driving the swing shaft, a swing arm is swingably attached to the swing shaft, a turret rotation shaft is attached to the tip of the swing arm and a turret drive motor for driving the turret rotation shaft, a turret is attached to the turret rotation shaft, a first processing tool with a large diameter is attached to the turret and a first processing tool drive motor for driving the first processing tool, a second processing tool with a diameter smaller than the first processing tool is attached to the turret and a second processing tool drive motor for driving the second processing tool, a turret pivot shaft having an axis parallel to the axis of the pivot shaft, the axes of the first and second processing tools extending radially from the axis of the turret pivot shaft, and the axis of the second processing tool being offset forward relative to the base column from the axis of the first processing tool.

2. 2. The workpiece machining device according to claim 1, wherein at least one additional machining tool having an axis extending radially relative to the axis of the turret rotation shaft is attached to the turret.

3. 3. A workpiece machining apparatus according to claim 1, wherein at least one auxiliary machining tool having an axis parallel to the axis of the turret rotation shaft is attached to the turret.

4. A workpiece processing device according to any one of claims 1 to 3, wherein the swing shaft and the turret rotation shaft are hollow shafts, wiring and piping are housed within the hollow shafts, and a partition wall is provided to separate the workpiece processing area from other areas.

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