processing machine

Abstract

To provide a processing machine that can be made as compact as possible. [Solution] The device comprises a spline shaft 15 to which rotational force is input, a base 3 that rotatably supports the spline shaft 15, a movable part 6 that is slidably mounted on the base 3 along the axial direction of the spline shaft 15, a spline boss 22 that is rotatably supported on the movable part 6 and receives rotational force from the spline shaft 15, a disc holder 25 for holding a disc 7 on the spline boss 22, and an air cylinder part 41 for sliding the movable part 6 relative to the base 3 and pressing the disc 7 against the workpiece.

Description

Technical Field

[0001] The present invention relates to a processing machine capable of appropriately maintaining a pressing force in a polishing machine, a grinding machine, or the like.

Background Art

[0002] Conventionally, various types of such processing machines have been proposed.

[0003] For example, Patent Document 1 discloses a polishing machine mounting device for a robot in which a polishing machine is mounted to the tip of an articulated arm via an air cylinder so as to appropriately maintain the pressing force of the polishing machine.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, since the entire polishing machine is supported by an air cylinder, there is a problem of increased size.

[0006] The present invention has been made based on the above circumstances, and an object thereof is to provide a processing machine that can be made as compact as possible.

Means for Solving the Problems

[0007] To solve the above problems, the machining machine according to the present invention is characterized by comprising: an input-side rotating shaft to which rotational force is input; a base portion that rotatably supports the input-side rotating shaft; a movable portion that is slidably provided on the base portion along the axial direction of the input-side rotating shaft; an output-side rotating shaft that is rotatably supported on the movable portion and to which rotational force is transmitted from the input-side rotating shaft; a holding portion for holding a machining tool on the output-side rotating shaft; and an air cylinder portion for sliding the movable portion relative to the base portion and pressing the machining tool against the workpiece. [Effects of the Invention]

[0008] The processing machine according to the present invention can be made as compact as possible. [Brief explanation of the drawing]

[0009] The drawings illustrate specific embodiments of the present invention, including not only essential components of the invention but also optional and preferred embodiments. [Figure 1] A perspective view showing a processing machine according to one embodiment of the present invention. [Figure 2] A side view showing a portion of the processing machine in cross-section. [Figure 3] A perspective view showing a cross-section of the main part of the processing machine. [Figure 4] An exploded perspective view showing the same processing machine. [Figure 5] An exploded perspective view showing the same processing machine. [Figure 6] An exploded perspective view showing the same processing machine. [Figure 7] An exploded perspective view showing the same processing machine. [Figure 8] A cross-sectional view showing the base and movable parts of the processing machine. [Figure 9] A cross-sectional view showing the base and movable parts of the processing machine. [Modes for carrying out the invention]

[0010] One embodiment of the present invention will be described below with reference to the drawings.

[0011] In FIG. 1, reference numeral 1 indicates a polishing machine as a processing machine according to an embodiment of the present invention.

[0012] This polishing machine 1 includes a base portion 3 attached to the tip of an arm of an industrial robot via an attachment member 2. A motor 5 is attached to one side of the base portion 3, and a movable portion 6 is attached to the other side.

[0013] And a disk (processing tool) 7 for performing polishing is attached to the movable portion 6.

[0014] As shown in FIGS. 2 to 5, the base portion 3 includes an annular cylinder block 11.

[0015] A spline joint 13 is attached to the inner peripheral side of the cylinder block 11 via an angular bearing 12.

[0016] This spline joint 13 is connected to the motor shaft 14 of the motor 5.

[0017] Also, a spline shaft (input-side rotating shaft) 15 is fixed to the spline joint 13 by bolts 16 so that a rotational force is input from the motor 5.

[0018] Furthermore, the cylinder block 11 has a cylindrical outer peripheral portion 17, and the movable portion 6 includes a stroke block 19 having an inner peripheral portion 18 that slidably fits over the outer peripheral portion 17.

[0019] As also shown in FIGS. 6 and 7, a spline nut holder 21 is attached to the inner peripheral side of the stroke block 19 via a radial bearing 20, and a spline boss (output-side rotating shaft) 22 that slidably fits onto the spline shaft 15 is held by the spline nut holder 21.

[0020] The radial bearing 20 is secured to the stroke block 19 by a decorative cover 23 and bolts 24.

[0021] Furthermore, a disc holder (holding part) 25 is fixed to the spline boss 22, and the disc 7 is fixed to this disc holder 25 by disc fixing screws 26.

[0022] Furthermore, as shown in Figure 8, a tubular linear bush 27 is embedded in the cylinder block 11, and a shaft 28 that can slide freely on the linear bush 27 is attached to the stroke block 19 by bolts 29, thereby guiding the sliding of the stroke block 19.

[0023] Furthermore, as shown in Figure 9, a stop bolt 30 is attached to the cylinder block 11.

[0024] On the other hand, the stroke block 19 has a stepped hole 33 having a large diameter portion 31 and a small diameter portion 32.

[0025] The stop bolt 30 is then screwed into the cylinder block 11 by inserting its small diameter portion 32 through it so that its head 34 is positioned on the large diameter portion 31, thereby preventing the stroke block 19 from coming out of the cylinder block 11.

[0026] The polishing machine 1 configured in this way is further provided with an air cylinder section 41 for sliding the movable section 6 relative to the base section 3 and pressing the disc 7 against the workpiece.

[0027] In other words, an annular end plate 42 is fixed to the motor 5 side of the cylinder block 11 by bolts 43.

[0028] This end plate 42 has a first air inlet hole 44 formed therein for introducing air.

[0029] Furthermore, an annular groove 45 with a concave cross-section is formed in the end plate 42, and by overlapping the open portion of this annular groove 45 with the cylinder block 11 to close it, an annular air passage 46 is formed for the air introduced from the first air inlet hole 44.

[0030] Furthermore, the cylinder block 11 is provided with a cylinder chamber 47 that communicates with an air passage 46, and this cylinder chamber 47 is formed by a tubular bush 48 embedded in the cylinder block 11.

[0031] Meanwhile, a piston 49, which fits into the cylinder chamber 47, is fixed to the inside of the stroke block 19.

[0032] Then, air is introduced into the cylinder chamber 47 through the air passage 46 from the first air inlet hole 44, which pushes the piston 49, causing the stroke block 19 to slide and the disc 7 to press against the workpiece, ensuring that the pressing force of the disc 7 against the workpiece is properly maintained.

[0033] Furthermore, the end plate 42 of the base unit 3 and the cylinder block 11 are formed with a second air introduction hole 50 that introduces air between the cylinder block 11 and the stroke block 19, thereby enabling air purging to prevent dust from entering between the cylinder block 11 and the stroke block 19.

[0034] With the above configuration, the tip of the polishing machine 1 is made movable, and the air cylinder section 41 maintains the appropriate pressing force of the disc 7 against the workpiece, thus making it as compact as possible.

[0035] The disclosure relating to the present invention described above can be summarized to at least the following:

[0036] In other words, the machining machine according to the present invention is characterized by comprising: an input-side rotating shaft to which rotational force is input; a base portion that rotatably supports the input-side rotating shaft; a movable portion that is slidably provided on the base portion along the axial direction of the input-side rotating shaft; an output-side rotating shaft that is rotatably supported on the movable portion and to which rotational force is transmitted from the input-side rotating shaft; a holding portion for holding a machining tool on the output-side rotating shaft; and an air cylinder portion for sliding the movable portion relative to the base portion and pressing the machining tool against the workpiece.

[0037] The present invention described above may include at least the following embodiments. These embodiments may be adopted separately or in combination with each other.

[0038] (1) The air cylinder section preferably comprises a cylinder chamber formed in the base section and a piston fixed to the movable section and fitted inside the cylinder chamber.

[0039] (2) The air cylinder section is preferably configured to include a first air inlet hole formed in the base section and an annular air passage that guides the air introduced from the first air inlet hole into the cylinder chamber.

[0040] (3) Preferably, the base portion has an outer circumference and the movable portion has an inner circumference that is slidably fitted onto the outer circumference.

[0041] (4) The air cylinder portion is preferably formed in the base portion and has a second air introduction hole for introducing air between the base portion and the movable portion. [Explanation of Symbols]

[0042] 1 Processing machine 3. Base part 6 Moving parts 7. Processing tools (discs) 15 Input side rotation axis (spline axis) 17 Outer perimeter 18 Inner circumference 22 Output side rotating shaft (spline boss) 25. Holding part (disc holder) 41 Air cylinder section 44 First air inlet 46 Airflow channels 47 Cylinder chamber 49 Pistons 50 Second air inlet

Claims

1. The input side rotation shaft to which rotational force is applied, A base portion that rotatably supports the input side rotating shaft, A movable part is provided on the base portion so as to be slidable along the axial direction of the input side rotation shaft, The movable part is rotatably supported and has an output rotating shaft that receives rotational force from the input rotating shaft, The output side rotating shaft includes a holding part for holding a workpiece, An air cylinder section for sliding the movable part relative to the base section and pressing the workpiece against the workpiece, A processing machine characterized by being equipped with the following.

2. The processing machine according to claim 1, characterized in that the air cylinder portion comprises a cylinder chamber formed in the base portion and a piston fixed to the movable portion and fitted inside the cylinder chamber.

3. The processing machine according to claim 2, characterized in that the air cylinder portion comprises a first air inlet hole formed in the base portion and an annular air passage that guides the air introduced from the first air inlet hole into the cylinder chamber.

4. The processing machine according to claim 1, characterized in that the base portion comprises an outer circumference portion, and the movable portion comprises an inner circumference portion that is slidably fitted onto the outer circumference portion.

5. The processing machine according to claim 4, characterized in that the air cylinder portion is formed in the base portion and has a second air introduction hole for introducing air between the base portion and the movable portion.

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