Cleaning tools for multi-tasking machines

Abstract

To make it possible to suitably remove scraps in a composite processor without provision of a plurality of nozzles, to avoid large-sizing of the composite processor, and to achieve reduction in cost of manufacture.SOLUTION: A cleaning tool (a cleaning tool 100) for a composite processor includes: a tool holder 110 which can be attached / detached to / from a tool spindle 210, and in which a coolant flow channel 114 is formed; and a case 120 which is arranged continuously with the tool holder. The case 120 comprises: a spherical internal space 122 which communicates with the flow channel 114; two discharge nozzles (a first discharge nozzle 124a, a second discharge nozzle 124b) which are formed at different positions in the internal space and communicate with the exterior of the case; recesses (a first recess 126a, a second recess 126b) which are respectively formed in an opening on the internal space side of each discharge nozzle; and a spherical body 130 which is accommodated in the internal space, fits in any recess, and functions as a plug of the discharge nozzle.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a cleaning tool for a multi-tasking machine, which is attached to a tool spindle of the multi-tasking machine.

Background Art

[0002] In a multi-tasking machine, chips are generated when a workpiece is machined by a tool. If these chips remain inside the multi-tasking machine, they may enter between the workpiece and the chuck of the workpiece spindle when replacing the workpiece, which leads to a reduction in machining accuracy. For this reason, it is desirable to clean the tools and the inside of the multi-tasking machine to remove the chips before replacing the workpiece.

[0003] For example, Patent Document 1 discloses "a machine tool comprising: a side wall defining a machining chamber; a pedestal disposed inside the machining chamber; a spindle holding a tool; a discharge trough extending in the front-rear direction at the center of the machining chamber; a table disposed above the discharge trough and movable in the front-rear direction; a first nozzle disposed below the table and ejecting a cleaning fluid downward; a pump connected to the first nozzle and supplying the cleaning fluid; and a control device configured to control ejection of the cleaning fluid".

[0004] Further, in the configuration where the cleaning fluid is ejected using the first nozzle arranged downward as described above, chips can be suitably removed in the lower region of the machining chamber of the machine tool, but it is difficult to remove chips in other regions. For this reason, Patent Document 1 additionally provides a right second nozzle, a right third nozzle, a left second nozzle, and a left third nozzle.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0006] However, as shown in Patent Document 1, providing multiple nozzles in the processing chamber complicates the device configuration, increases the manufacturing cost of the device, and leads to a larger device size.

[0007] In view of these problems, the present invention aims to provide a cleaning tool for a multi-tasking machine that can suitably remove chips inside the machine without providing multiple nozzles, thereby avoiding an increase in the size of the multi-tasking machine and reducing manufacturing costs. [Means for solving the problem]

[0008] To solve the above problems, a typical configuration of the cleaning tool for a multi-tasking machine according to the present invention includes a tool holder that is detachably attached to the tool spindle of the multi-tasking machine and has a coolant flow path formed inside, and a case arranged continuously with the tool holder, the case comprising a spherical internal space communicating with the flow path, two discharge nozzles formed at different locations in the internal space and communicating with the outside of the case, recesses formed in each of the openings on the internal space side of each discharge nozzle, and a sphere housed in the internal space that fits into one of the recesses and functions as a plug for the discharge nozzle.

[0009] The two discharge nozzles described above should be formed at locations where they have different inclination angles with respect to the central axis of the tool holder. Furthermore, one of the two discharge nozzles should be formed on the central axis of the tool holder. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a cleaning tool for a multi-tasking machine that can suitably remove chips inside the machine without providing multiple nozzles, thereby avoiding an increase in the size of the multi-tasking machine and reducing manufacturing costs. [Brief explanation of the drawing]

[0011] [Figure 1]This is a perspective view illustrating the configuration of a multi-tasking machine in which the cleaning tool for the multi-tasking machine of this embodiment is detachable. [Figure 2] This diagram illustrates a cleaning tool for a multi-tasking machine according to this embodiment. [Figure 3] Figure 2 illustrates how the cleaning tool is used. [Figure 4] This figure illustrates a different usage scenario of the cleaning tool shown in Figure 2 compared to Figure 3. [Modes for carrying out the invention]

[0012] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. The dimensions, materials, and other specific numerical values ​​shown in these embodiments are merely illustrative to facilitate understanding of the invention and do not limit the present invention unless otherwise specified. In this specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals to avoid redundant explanations, and elements not directly related to the present invention are omitted from the illustrations.

[0013] Figure 1 is a perspective view illustrating the configuration of a multi-tasking machine in which a cleaning tool for the multi-tasking machine of this embodiment is detachable. As illustrated in Figure 1, the multi-tasking machine 200 has a column 204 mounted on a wall 202a so as to be able to travel in the Z-axis direction (left-right direction) by rail 230a. A rotary table 206 is mounted on the column 204 so as to be able to move in the Y-axis direction (up-down direction).

[0014] A tool spindle 210 is mounted on the rotary table 206, and the angle (position) of the tool spindle 210 can be set by rotating the rotary table 206 in the R direction. A tool (not shown) can be interchangeably mounted on the tool spindle 210 (Figure 1 shows it with the cleaning tool 100, which will be described later, attached). The tool spindle 210 has a built-in motor and can rotate the tool to perform machining such as cutting.

[0015] The workpiece spindle 220 is movable in the X-axis direction (forward and backward direction) by rails 230b formed on the wall 202b. The workpiece spindle 220 has a built-in motor and can rotate a replaceably mounted workpiece (not shown). Hereinafter, the space in the multi-tasking machine 200 where the tool spindle 210 and workpiece spindle 220 are located will be referred to as the machining chamber 200a.

[0016] Figure 2 is a diagram illustrating a cleaning tool for a multi-tasking machine according to this embodiment (hereinafter referred to as the cleaning tool 100), illustrating a schematic cross-section of the cleaning tool shown in Figure 1. As shown in Figure 1, the cleaning tool 100 of this embodiment is attached to the tool spindle 210 of the multi-tasking machine 200 and cleans the machining chamber 200a by spraying coolant.

[0017] As shown in Figure 2, the 100 of this embodiment comprises a tool holder 110 and a case 120. The tool holder 110 has an ATC groove 112 used when changing tools. This allows the tool holder 110 to be attached to and detached from the tool spindle 210 of the multi-tasking machine 200. A flow path 114 for coolant is formed inside the tool holder 110, and coolant is supplied through the tool spindle 210 (so-called center-through coolant).

[0018] The case 120 is positioned in conjunction with the tool holder 110 and has a spherical internal space 122 that communicates with the flow path 114 of the tool holder 110. Two discharge nozzles (first discharge nozzle 124a and second discharge nozzle 124b) are formed in different locations within the internal space 122, communicating from the internal space 122 to the outside, i.e., the machining chamber 200a. Spherical recesses (first recess 126a and second recess 126b) are formed at the openings of the first discharge nozzle 124a and second discharge nozzle 124b on the internal space 122 side.

[0019] A spherical body 130 is accommodated in the internal space 122 of the case 120. This spherical body 130 fits into either one of the first recess 126a and the second recess 126b, and functions as a plug for one of the first discharge nozzle 124a and the second discharge nozzle 124b.

[0020] Specifically, the first discharge nozzle 124a and the second discharge nozzle 124b (the two discharge nozzles) are formed at positions having different inclination angles with respect to the central axis S of the tool holder 110. Accordingly, by making the recess into which the spherical body 130 fits different, coolant can be discharged in a plurality of directions.

[0021] Particularly in the present embodiment, the first discharge nozzle 124a is formed on the central axis S of the tool holder 110, that is, at a position where the inclination angle with respect to the central axis S of the tool holder 110 is 0°. The second discharge nozzle 124b is formed at a position at an inclination angle θ (approximately 60° in the drawing) from the central axis S of the tool holder 110.

[0022] As shown in FIG. 2, when the tool spindle 210 is in a vertical state, the first discharge nozzle 124a is located at the lower part of the internal space 122, and the second discharge nozzle 124b is located at the side of the first discharge nozzle 124a. Then, the spherical body 130 is fitted into the first recess 126a by gravity. Since the spherical body 130 is not fitted in the second recess 126b, the second discharge nozzle 124b is in a state of communicating with the machining chamber 200a.

[0023] When coolant is supplied from the tool spindle 210 in this state, the coolant passes through the flow path 114 and flows into the internal space 122. The spherical body 130 is pressed against the first recess 126a by the internal pressure to close the first discharge nozzle 124a, and thus functions as a plug for the first discharge nozzle 124a. Therefore, the coolant is discharged only from the second discharge nozzle 124b. As a result, side chips in the machining chamber 200a are removed.

[0024] Figure 3 illustrates the usage of the cleaning tool 100 shown in Figure 2. As shown in Figure 2, when internal pressure is applied, the sphere 130 is fixed in the first recess 126a. When the rotary table 206 is rotated while the internal pressure is applied to change the tilt of the tool spindle 210, the cleaning tool 100 also tilts, as shown in Figure 3(a). This allows the direction of the coolant discharged from the second discharge nozzle 124b to be changed while the sphere 130 remains fitted in the first recess 126a.

[0025] Furthermore, by rotating the cleaning tool 100 by the tool spindle 210 from the state shown in Figure 3(a), the second discharge nozzle 124b can be directed upwards towards the first discharge nozzle 124a, or towards the front or rear of the machining chamber 200a, as shown in Figure 3(b). In this way, as long as internal pressure is applied, coolant can be discharged from the second discharge nozzle 124b in all directions that can be directed by the movable range of the tool spindle 210 (Y-axis, Z-axis, and R-axis rotation) and the rotation of the cleaning tool 100 by the tool spindle 210.

[0026] Figure 4 illustrates a different usage configuration of the cleaning tool 100 shown in Figure 2 compared to Figure 3. In Figure 4(a), the rotary table 206 is rotated to position the tool spindle 210 and the cleaning tool 100 horizontally. In Figure 4(a), the sphere 130 is fitted into the second recess 126b by positioning the second recess 126b downwards. When coolant is supplied to the internal space 122 in this state, the internal pressure presses the sphere 130 against the second recess 126b, blocking the second discharge nozzle 124b, so the sphere 130 functions as a plug for the second discharge nozzle 124b. Therefore, the coolant is discharged only from the first discharge nozzle 124a in the direction of the tip of the cleaning tool 100 (central axis S direction).

[0027] As shown in Figure 4(a), when the rotary table 206 is rotated while internal pressure is applied, tilting the tool spindle 210, the sphere 130 remains fitted into the second recess 126b even when the cleaning tool 100 is in an upright position, as shown in Figure 4(b). In this way, as long as internal pressure is applied, coolant can be discharged from the first discharge nozzle 124a in all directions that the first discharge nozzle 124a can be directed in, depending on the range of motion of the tool spindle 210 (Y-axis, Z-axis, and R-axis rotation).

[0028] As described above, with the cleaning tool 100 of this embodiment, the recess into which the sphere 130 fits can be changed by changing the posture of the cleaning tool 100 without applying internal pressure, and the position of the sphere 130 can be fixed by applying internal pressure. This makes it possible to appropriately change the communication and sealing with the internal space 122 of the first discharge nozzle 124a and the second discharge nozzle 124b, and makes it possible to discharge coolant in multiple directions with a single cleaning tool 100.

[0029] Furthermore, by forming the two discharge nozzles at different inclination angles with respect to the central axis S of the tool holder 110 of the tool spindle 210, a wide area within the machining chamber 200a can be covered. Therefore, chips within the device (machining chamber 200a) can be effectively removed without the need for multiple nozzles, thus avoiding an increase in the size of the device and reducing its cost.

[0030] Furthermore, in this embodiment, instead of fixing the cleaning nozzle inside the processing chamber 200a, the cleaning tool 100 is attached to the tool spindle 210 in place of the tool. Therefore, it is possible to make the device smaller compared to the case where the cleaning nozzle is fixedly installed.

[0031] Preferred embodiments of the present invention have been described above with reference to the attached drawings, but it goes without saying that the present invention is not limited to such examples. It will be obvious to those skilled in the art that various modifications or alterations can be conceived within the scope of the claims, and these will naturally also fall within the technical scope of the present invention. [Industrial applicability]

[0032] This invention can be used as a cleaning tool for a multi-tasking machine, which is attached to the tool spindle of the multi-tasking machine. [Explanation of Symbols]

[0033] 100...Cleaning tool, 110...Tool holder, 112...Groove for ATC, 114...Flow path, 120...Case, 122...Internal space, 124a...First discharge nozzle, 124b...Second discharge nozzle, 126a...First recess, 126b...Second recess, 130...Sphere, 200...Multi-tasking machine, 200a...Machining chamber, 202a...Wall, 202b...Wall, 204...Column, 206...Rotary table, 210...Tool spindle, 220...Work spindle, 230a...Rail, 230b...Rail, S...Central axis

Claims

1. A cleaning tool comprising a tool holder that is detachably attached to the tool spindle of a multi-tasking machine and has a coolant flow path formed inside, and a case arranged continuously with the tool holder, The case comprises a spherical internal space that communicates with the flow path, The aforementioned internal space is provided with recesses at the lower ends when the cleaning tool is changed to two different positions, and a sphere is placed in one of the recesses due to the action of gravity. Each recess is equipped with a discharge nozzle that communicates with the outside of the case. A cleaning tool for a multi-tasking machine, characterized in that the sphere is pressed against the recess by the internal pressure generated when coolant is supplied to the internal space, thereby blocking the nozzle.

2. The cleaning tool for a multi-tasking machine according to Claim 1, characterized in that one of the two recesses is formed on the central axis of the tool holder.

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