JP6837595B1 - Work bucket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work bucket which prevents a work from adhering to an inner wall of a bucket body. SOLUTION: A work bucket has an inner wall 56, and a bucket main body 51 in which a work is thrown into a space 53 surrounded by the inner wall 56 and an air ejection provided in the inner wall 56 to eject air toward the space 53. A unit 60 is provided. [Selection diagram] Fig. 4

Description

The present invention relates to a work bucket.

For example, Japanese Patent Application Laid-Open No. 2016-144850 (Patent Document 1) describes a bucket that is arranged on a turret and receives a work gripped by a spindle, and a shooter that uses the rotation of the turret to shoot the work in the bucket. A machine tool with a containment box for accommodating via is disclosed.

Japanese Unexamined Patent Publication No. 2016-144850

As disclosed in Patent Document 1 described above, work buckets used for collecting workpieces in machine tools are known. In such a work bucket, depending on the shape or size of the work, the work may stick to the inner wall of the bucket body via the coolant adhering to the work. In this case, the work cannot be smoothly discharged from the work bucket.

Therefore, an object of the present invention is to solve the above-mentioned problems, and to provide a work bucket that prevents the work from adhering to the inner wall of the bucket body.

The work bucket according to one aspect of the present invention has an inner wall, a bucket body in which the work is put into a space surrounded by the inner wall, and an air ejection portion provided on the inner wall and ejecting air toward the space. And. The air ejection portion has a covering member provided so as to cover the inner wall. The covering member is provided with a first air passage through which air flows and an opening for opening the first air passage toward the space.
A work bucket according to another aspect of the present invention has an inner wall, a bucket body in which the work is put into a space surrounded by the inner wall, and an air ejection portion provided on the inner wall and ejecting air toward the space. And. The bucket body is rotatably supported around a predetermined axis. A space is opened in the bucket body, and a slot for loading the work is provided. The inner wall has a bottom portion facing the inlet with a predetermined shaft, a first side portion and a second side portion rising from the bottom portion and facing each other across a predetermined shaft, and rising from the bottom portion with each other in the axial direction of the predetermined shaft. It has a third side portion and a fourth side portion that face each other. Air ejection portions are provided at least on the bottom portion, the first side portion, and the second side portion of the bottom portion, the first side portion, the second side portion, the third side portion, and the fourth side portion.
The work bucket according to still another aspect of the present invention has an inner wall, a bucket body in which the work is put into a space surrounded by the inner wall, and an air ejection provided on the inner wall to eject air toward the space. It includes a portion, a support that rotatably supports the bucket body about a predetermined axis, and a shaft that is connected to the support. The shaft body is provided with a second air passage for introducing air toward the air ejection portion.
The work bucket according to still another aspect of the present invention has an inner wall, a bucket body in which the work is put into a space surrounded by the inner wall, and an air ejection provided on the inner wall to eject air toward the space. It has a part.

According to the work bucket configured in this way, it is possible to prevent the work from sticking to the inner wall of the bucket body by ejecting air from the inner wall side of the bucket body toward the space by the air ejection portion.

Further, preferably, the air ejection portion has a covering member provided so as to cover the inner wall. The covering member is provided with a first air passage through which air flows and an opening for opening the first air passage toward a space.

According to the work bucket configured in this way, it is possible to prevent the work from sticking to the inner wall of the work bucket by ejecting the air flowing through the first air passage toward the space through the opening.

Further, preferably, the covering member is provided with a plurality of openings at intervals from each other.

According to the work bucket configured in this way, it is possible to prevent the work from sticking to a wider area of the inner wall.

Further, preferably, the covering member is made of resin.

According to the work bucket configured in this way, the first air passage and the opening are easily provided in the resin covering member while appropriately protecting the work to be put into the bucket body by the resin covering member. Can be done.

Also preferably, the covering member has a surface that defines the space. The surface has a concavo-convex shape in which concave portions recessed toward the inner wall and convex portions projecting toward the space and having a top surface at the tip protruding toward the space are alternately arranged. The plurality of openings include an opening that opens at the top surface.

According to the work bucket configured in this way, the contact area between the surface of the covering member and the ground contact surface of the work with respect to the surface can be reduced by forming the surface of the covering member into an uneven shape. As a result, it is possible to more effectively prevent the work from sticking to the inner wall of the work bucket.

Also preferably, the bucket body is rotatably supported around a predetermined axis. A space is opened in the bucket body, and a slot for loading the work is provided. The inner wall has a bottom portion facing the input port across a predetermined shaft, a first side portion and a second side portion rising from the bottom portion and facing each other across a predetermined shaft, rising from the bottom portion, and each other in the axial direction of the predetermined shaft. It has a third side portion and a fourth side portion that face each other. Air ejection portions are provided at least on the bottom portion, the first side portion, and the second side portion of the bottom portion, the first side portion, the second side portion, the third side portion, and the fourth side portion.

According to the work bucket configured in this way, by providing air outlets at the bottom, the first side, and the second side, where it is assumed that the work is likely to stick due to the rotational movement of the bucket body. , It is possible to prevent the work from sticking to the inner wall of the work bucket more reliably.

Further, preferably, the work bucket further includes a support that rotatably supports the bucket body about a predetermined shaft, and a shaft that is connected to the support. The shaft body is provided with a second air passage for introducing air toward the air ejection portion.

According to the work bucket configured in this way, it is possible to prevent the air introduction path to the air ejection portion from being exposed to the outside.

As described above, according to the present invention, it is possible to provide a work bucket that prevents the work from adhering to the inner wall of the bucket body.

It is a perspective view which shows the machine tool using the work bucket in embodiment of this invention. It is a figure which shows the operation of a work bucket. It is a top view which shows the work bucket in FIG. It is sectional drawing which shows the work bucket seen in the direction of the arrow on the IV-IV line in FIG. It is sectional drawing which shows the work bucket seen in the direction of the arrow on the VV line in FIG. It is sectional drawing which shows the work bucket of the range surrounded by the alternate long and short dash line VI in FIG. It is a perspective view which shows the work. It is sectional drawing which shows the inside of the bucket body at the time of paying out a work. It is sectional drawing which shows the modification of the work bucket in FIG.

Embodiments of the present invention will be described with reference to the drawings. In the drawings referred to below, the same or corresponding members are given the same number.

FIG. 1 is a perspective view showing a machine tool using a work bucket according to an embodiment of the present invention. With reference to FIG. 1, the machine tool 100 is a lathe that processes a work by bringing a tool into contact with a rotating work. The machine tool 100 is an NC (Numerically Control) machine tool in which various operations for machining a work are automated by numerical control by a computer.

In FIG. 1, a Z-axis parallel to the horizontal direction and an X-axis orthogonal to the Z-axis direction and extending diagonally with respect to the vertical direction are shown. The diagonally lower right front side of the paper surface shown in FIG. 1 corresponds to the + Z axis direction, and the diagonally upper left back side of the paper surface shown in FIG. 1 corresponds to the −Z axis direction.

The machine tool 100 has a splash guard 21 and a door portion (not shown). The splash guard 21 forms a processing area 150 together with the door portion. The processing area 150 is a space in which the work is processed, and is sealed so that foreign matter such as chips or cutting oil accompanying the work processing does not leak to the outside of the processing area 150. When the door portion is opened, the processing area 150 is opened to the external space.

The machine tool 100 further includes a work spindle 26 and a tool post (not shown). The work spindle 26 rotates the work around a rotation center axis 110 extending in the Z-axis direction. The work spindle 26 has a chuck 27 for holding the work detachably. The chuck 27 is provided so as to project into the machining area 150 from the side surface 22 of the splash guard 21 orthogonal to the Z-axis direction.

The tool post is provided in the machining area 150. The tool post is configured so that a plurality of tools can be detachably held. The tool post is a turret type that can swivel around a swivel center axis extending in the Z-axis direction and moves a plurality of tools in the circumferential direction of the swivel center axis in accordance with the swivel operation. The tool post can be moved in the Z-axis direction and the X-axis direction.

FIG. 2 is a diagram showing the operation of the work bucket. With reference to FIGS. 1 and 2, the machine tool 100 further comprises a work bucket 10. The work bucket 10 is provided in the processing area 150. The work bucket 10 is a device for automatically collecting the machined work from the work spindle 26.

The work bucket 10 has a bucket body 51, a support 31, and a shaft 40. The bucket body 51 has a box shape that is open in one direction. The bucket body 51 is made of metal. The bucket body 51 forms a space 53 that can accommodate the work. The bucket body 51 is provided with a slot 52. The input port 52 includes an opening that opens the space 53 into the space within the processing area 150. The input port 52 has a rectangular opening surface.

The bucket body 51 is provided below the chuck 27 (rotation center axis 110). The bucket main body 51 is provided at a position closer to the + Z axis direction than the chuck 27 while having a range that overlaps with the chuck 27 in the Z axis direction. The work is charged into the space 53 through the input port 52.

The bucket body 51 is rotatably supported by a support 31 about a first rotation center axis 130 (predetermined axis). The first rotation center shaft 130 extends in the Z-axis direction. The first rotation center shaft 130 is located between the insertion port 52 and the position of the center of gravity of the bucket body 51 when viewed in the axial direction of the first rotation center shaft 130. The bucket main body 51 is in a posture in which the input port 52 opens upward when no external force is applied.

The support 31 has a base portion 32, a first arm portion 33, and a second arm portion 34. The first arm portion 33 and the second arm portion 34 are connected to the bucket main body 51 so as to be rotatable about the first rotation center shaft 130. The base portion 32 connects the first arm portion 33 and the second arm portion 34.

The base portion 32 extends in the axial direction of the first rotation center shaft 130. The first arm portion 33 extends inward in the radial direction of the first rotation center shaft 130 from the end portion of the base portion 32 in the + Z axis direction. The first arm portion 33 is connected to the bucket body 51 on the axis of the first rotation center shaft 130. The second arm portion 34 extends inward in the radial direction of the first rotation center shaft 130 from the end portion of the base portion 32 in the −Z axis direction. The second arm portion 34 extends in parallel with the first arm portion 33. The second arm portion 34 is connected to the bucket body 51 on the axis of the first rotation center shaft 130.

The shaft body 40 is connected to the support body 31. The shaft body 40 supports the bucket body 51 within the processing area 150.

The shaft body 40 has a first shaft body 41 and a second shaft body 46. The first shaft body 41 is connected to the support 31 (base 32). The first shaft body 41 is connected to the base portion 32 at an intermediate position of the base portion 32 in the Z-axis direction. The first shaft body 41 extends from the base portion 32 toward the outer side in the radial direction of the first rotation center shaft 130.

The second shaft body 46 connects the splash guard 21 and the first shaft body 41. The second shaft body 46 extends on the axis of the second rotation center shaft 120. The second rotation center axis 120 is parallel to the first rotation center axis 130 (Z axis). The second rotation center shaft 120 is located below the chuck 27 (rotation center shaft 110).

The end of the second shaft body 46 in the −Z axis direction is connected to the splash guard 21 (side surface 22). The second shaft body 46 is connected to the first shaft body 41 at a position separated from the splash guard 21 (side surface 22) in the + Z axis direction.

The work bucket 10 further includes an actuator 48. The actuator 48 includes a motor or the like that outputs a rotary motion. The actuator 48 is provided outside the machining area 150.

The actuator 48 is connected to the second shaft body 46. The second shaft body 46 can rotate in the forward direction or the reverse direction about the second rotation center shaft 120 by transmitting the rotational movement from the actuator 48. With the rotation operation of the second shaft body 46, the first shaft body 41 swings around the second rotation center shaft 120, and the bucket body 51 moves in the circumferential direction of the second rotation center shaft 120. ..

The work bucket 10 further has a work collection box 161. The work collection box 161 is provided outside the processing area 150. The work collection box 161 is provided below the second shaft body 46 (second rotation center shaft 120). The work collection box 161 is provided on the opposite side of the chuck 27 (rotation center shaft 110) with the second rotation center shaft 120 in between when viewed in the Z-axis direction.

The work collection box 161 is provided with a collection port 162. The collection port 162 is opened so as to face the horizontal direction orthogonal to the Z-axis direction. The collection port 162 opens toward the inside of the processing area 150.

The bucket body 51 has a first position (position shown in the bucket body 51A in FIG. 2) positioned directly below the chuck 27 (rotation center axis 110) as the second shaft body 46 rotates. It can be moved to and from a second position (position shown in the bucket body 51B in FIG. 2) which is positioned close to the work collection box 161.

After the machining of the work held on the work spindle 26 is completed, the bucket body 51 is positioned at the first position. The bucket main body 51 is in a posture in which the insertion port 52 opens upward. By releasing the holding of the work by the chuck 27, the work is charged into the space 53 in the bucket main body 51 through the charging port 52.

Next, the bucket body 51 is moved from the first position to the second position by rotating the second shaft body 46 around the second rotation center shaft 120. At this time, the bucket body 51 rotates around the first rotation center shaft 130 to maintain a posture in which the insertion port 52 faces upward and opens.

When the bucket body 51 approaches the second position, the attitude control mechanism (not shown) engages with the bucket body 51. By rotating around the first rotation center shaft 130, the bucket body 51 changes from a posture in which the insertion port 52 opens upward, to a posture in which the insertion port 52 opens in the horizontal direction. When the bucket body 51 is positioned at the second position, the loading port 52 of the bucket body 51 faces the collection port 162 of the work collection box 161. The work is discharged into the work collection box 161 from the space 53 in the bucket main body 51 through the input port 52 and the collection port 162 in order by its own weight.

The movement of the bucket body 51 with respect to the work spindle 26 is not limited to the above. For example, a linear actuator such as a piston may be used to move the bucket body 51 in the horizontal direction orthogonal to the Z-axis direction. Further, in the present embodiment, the work is dispensed from the bucket main body 51 by the rotational operation of the bucket main body 51 about the first rotation central shaft 130, but the present invention is not limited to this, and for example, The work in the bucket body 51 may be discharged by opening the bottom of the bucket body 51.

FIG. 3 is a top view showing the work bucket in FIG. FIG. 4 is a cross-sectional view showing a work bucket viewed in the direction of arrow on the IV-IV line in FIG. FIG. 5 is a cross-sectional view showing a work bucket viewed in the direction of arrow on the VV line in FIG. FIG. 6 is a cross-sectional view showing a work bucket in the range surrounded by the alternate long and short dash line VI in FIG.

With reference to FIGS. 3 to 6, the bucket body 51 has an inner wall 56. The space 53 is partitioned by a space surrounded by an inner wall 56. The inner wall 56 has a bottom portion 56T, a first side portion 56R, a second side portion 56S, a third side portion 56P, and a fourth side portion 56Q.

The bottom portion 56T faces the insertion port 52 with the first rotation center shaft 130 interposed therebetween. The bottom portion 56T is formed of a plane parallel to the first rotation center axis 130. The bottom portion 56T has a rectangular shape when viewed in a plan view. The bottom portion 56T faces upward when the bucket body 51 is in a posture in which the insertion port 52 faces upward and opens. The inclination of the bottom portion 56T changes as the bucket body 51 rotates about the first rotation center shaft 130.

The first side portion 56R and the second side portion 56S rise from the bottom portion 56T. The first side portion 56R and the second side portion 56S face each other with the first rotation center shaft 130 interposed therebetween. The first side portion 56R and the second side portion 56S are formed of a plane parallel to the first rotation center axis 130. When the bucket main body 51 is in a posture in which the insertion port 52 is opened upward, the first side portion 56R and the second side portion 56S are obliquely upward. The inclinations of the first side portion 56R and the second side portion 56S change as the bucket body 51 rotates about the first rotation center shaft 130.

The third side portion 56P and the fourth side portion 56Q rise from the bottom portion 56T. The third side portion 56P and the fourth side portion 56Q face each other in the axial direction of the first rotation center shaft 130. The third side portion 56P and the fourth side portion 56Q are formed of a plane orthogonal to the first rotation center axis 130. The third side portion 56P and the fourth side portion 56Q, together with the first side portion 56R and the second side portion 56S, define the opening edge of the input port 52. The third side portion 56P and the fourth side portion 56Q are oriented in the horizontal direction (Z-axis direction) regardless of the posture of the bucket body 51 centered on the first rotation center axis 130.

The fourth side portion 56Q is arranged on the front side of the third side portion 56P when viewed from the side surface 22 of the splash guard 21. When the bucket body 51 is positioned at the second position (the position shown in the bucket body 51B in FIG. 2), the second side portion 56S is arranged below the first side portion 56R.

The work bucket 10 further has an air ejection portion 60. The air ejection portion 60 is provided on the inner wall 56. The air ejection unit 60 is configured to eject air toward the space 53.

The air ejection portion 60 includes at least the bottom portion 56T, the first side portion 56R, and the second side portion of the bottom portion 56T, the first side portion 56R, the second side portion 56S, the third side portion 56P, and the fourth side portion 56Q. It is provided in 56S. The air ejection portion 60 is provided on the bottom portion 56T, the first side portion 56R, and the second side portion 56S.

The air ejection portion 60 has a covering member 61. The covering member 61 is made of a resin such as polypropylene or polyamide. The covering member 61 is provided so as to cover the inner wall 56. The covering member 61 has a flat plate shape in which the same direction as the thickness direction of the bucket body 51 at the portion covered by the covering member 61 is the thickness direction.

The coating member 61 has a coating bottom portion 61T, a first coating side portion 61R, a second coating side portion 61S, a third coating side portion 61P, and a fourth coating side portion 61Q. The covering bottom portion 61T is provided so as to cover the bottom portion 56T of the inner wall 56. The first covering side portion 61R is provided so as to cover the first side portion 56R of the inner wall 56. The second covering side portion 61S is provided so as to cover the second side portion 56S of the inner wall 56. The third coated side portion 61P is provided so as to cover the third side portion 56P of the inner wall 56. The fourth covering side portion 61Q is provided so as to cover the fourth side portion 56Q of the inner wall 56.

The covering member 61 is provided with a first air passage 66 and an opening 67. The first air passage 66 and the opening 67 are provided in the coating bottom portion 61T, the first coating side portion 61R, and the second coating side portion 61S.

Air flows through the first air passage 66. The opening 67 opens the first air passage 66 toward the space 53. The opening 67 is provided so as to communicate between the first air passage 66 and the space 53. The covering member 61 is provided with a plurality of openings 67. The plurality of openings 67 are arranged at intervals from each other.

A plurality of first air passages 66 are provided in each of the covering members 61 of the covering bottom portion 61T, the first coating side portion 61R, and the second coating side portion 61S. The plurality of first air passages 66 extend in parallel with the first rotation central axis 130. The plurality of first air passages 66 are provided in each covering member 61 at intervals in the direction orthogonal to the first rotation center axis 130.

The first air passage 66 is partitioned by an inner wall 56 and a concave surface of a covering member 61 that is recessed in a direction away from the inner wall 56. The covering member 61 may be provided with a hole extending in the axial direction of the first rotation center shaft 130, and the first air passage 66 may be provided inside the hole.

A plurality of openings 67 are provided in each of the covering members 61 of the covering bottom portion 61T, the first coating side portion 61R, and the second coating side portion 61S. The opening 67 is composed of a through hole that penetrates each covering member 61 in the thickness direction thereof and connects to the first air passage 66. The opening 67 has a circular opening shape. The plurality of openings 67 are provided in each covering member 61 at intervals between the axial direction of the first rotation central shaft 130 and the direction orthogonal to the axial direction of the first rotation central shaft 130. ..

The distance between the plurality of openings 67 may be different between the coating bottom portion 61T, the first coating side portion 61R, and the second coating side portion 61S. For example, the distance between the plurality of openings 67 in the coating bottom 61T is smaller than the distance between the plurality of openings 67 in the first coating side 61R, and the distance between the plurality of openings 67 in the second coating side 61S is the coating. The configuration may be even smaller than the distance between the plurality of openings 67 in the bottom 61T.

Further, the first air passage 66 and the opening 67 are provided in the third coated side portion 61P and the fourth coated side portion 61Q in addition to the coated bottom portion 61T, the first coated side portion 61R and the second coated side portion 61S. It may be a configuration.

A branch air passage 74 is provided in the third covering side portion 61P. When viewed in the axial direction of the first rotation center shaft 130, the branch air passage 74 has a coating bottom portion 61T, a first coating side portion 61R, and a second coating side portion from above the axis of the first rotation center shaft 130. It extends toward the three sides where the 61S is placed. The branch air passage 74 extends toward the coating bottom portion 61T and communicates with a plurality of first air passages 66 provided in the coating bottom portion 61T. The branched air passage 74 extends toward the first coated side portion 61R and communicates with a plurality of first air passages 66 provided in the first coated side portion 61R. The branched air passage 74 extends toward the second coated side portion 61S and communicates with a plurality of first air passages 66 provided in the second coated side portion 61S.

The work bucket 10 further includes a first boss portion 71 and a second boss portion 72. The first boss portion 71 and the second boss portion 72 have a cylindrical shape centered on the first rotation center shaft 130. The first boss portion 71 and the second boss portion 72 are provided outside the space 53. The first boss portion 71 is connected to the bucket main body 51 from the back side of the third side portion 56P. The second boss portion 72 is connected to the bucket main body 51 from the back side of the fourth side portion 56Q.

The support 31 is provided with a first insertion hole 35 and a second insertion hole 36. The first insertion hole 35 is provided in the first arm portion 33. The first insertion hole 35 includes a through hole that penetrates the first arm portion 33 in the axial direction of the first rotation center shaft 130. The second insertion hole 36 is provided in the second arm portion 34. The second insertion hole 36 is a through hole that penetrates the second arm portion 34 in the axial direction of the first rotation center shaft 130.

The first boss portion 71 is inserted into the first insertion hole 35, and the second boss portion 72 is inserted into the second insertion hole 36, so that the first arm portion 33 and the second arm portion 34 are inserted into the bucket body 51. On the other hand, they are connected so as to be rotatable around the first rotation center shaft 130.

The first boss portion 71 and the bucket main body 51 are provided with an air passage 73 in the boss. The first boss portion 71 and the bucket main body 51 are provided with holes extending on the axis of the first rotation center shaft 130, penetrating the first boss portion 71 and the bucket main body 51, and opening to the third side portion 56P. An air passage 73 in the boss is provided inside the hole. The air passage 73 in the boss communicates with the branch air passage 74.

The shaft body 40 is provided with a second air passage 80. The second air passage 80 introduces air toward the air ejection portion 60. The second air passage 80 is provided in the first shaft body 41 and the second shaft body 46. The first shaft body 41 has a tubular shape, and a second air passage 80 is provided inside the first shaft body 41. The second shaft body 46 is provided with a hole extending on the axis of the second rotation center shaft 120, and a second air passage 80 is provided inside the hole.

The work bucket 10 further includes a pipe 39. One end of the pipe 39 is connected to the first shaft body 41 via a joint 37. The other end of the pipe 39 is connected to the first boss portion 71 via a joint 38. The second air passage 80 and the air passage 73 in the boss are communicated with each other by a pipe 39.

A pipe from an air supply source such as a compressor is connected to the second air passage 80 outside the processing area 150. The air from the air supply source passes through the second air passage 80, the air passage 73 in the boss, and the branch air passage 74 in this order, and is provided in the coating bottom portion 61T, the first coating side portion 61R, and the second coating side portion 61S. It is supplied to a plurality of first air passages 66. Air is ejected from the plurality of openings 67 toward the space 53 while flowing through the plurality of first air passages 66 along the axial direction of the first rotation central shaft 130.

FIG. 7 is a perspective view showing the work. FIG. 8 is a cross-sectional view showing the inside of the bucket body at the time of paying out the work.

With reference to FIGS. 1 to 8, when the work W is dispensed into the work collection box 161 from the bucket body 51 positioned at the second position (the position shown in the bucket body 51B in FIG. 2), the work W A phenomenon may occur in which the bucket body 51 sticks to the inner wall of the bucket body 51 via the coolant adhering to the work W. For example, when the work W has the thin disk shape shown in FIG. 7, such a phenomenon becomes remarkable.

On the other hand, in the work bucket 10 of the present embodiment, the covering member 61 is provided so as to cover the inner wall 56 of the bucket body 51, and the first air passage 66 through which air flows through the covering member 61 and the first air By providing the opening 67 that opens the passage 66 toward the space 53, air is ejected from the side of the inner wall 56 toward the space 53. As a result, a thin-film air layer is interposed between the covering member 61 and the ground plane of the work W with respect to the covering member 61, and the work W can be prevented from sticking to the surface of the covering member 61.

Further, since the covering member 61 is made of resin, the first air passage 66 and the opening 67 can be easily provided in the covering member 61 while preventing the work W thrown into the bucket main body 51 from being damaged. ..

Further, in the bucket body 51 that rotates around the first rotation center shaft 130, the sticking phenomenon of the work W causes the coating bottom 61T and the first coating of the covering member 61 that covers the inner wall 56 of the bucket body 51. It tends to occur on the side portion 61R and the second coated side portion 61S. Therefore, by providing the first air passage 66 and the opening 67 in the coating bottom portion 61T, the first coating side portion 61R, and the second coating side portion 61S, the sticking phenomenon of the work W can be more reliably prevented.

Further, each of the covering members 61 of the covering bottom portion 61T, the first coating side portion 61R, and the second coating side portion 61S is provided with a plurality of openings 67 at intervals from each other. With such a configuration, it is possible to prevent the work W from sticking in a wider range in the plane direction of each of the covering members 61 of the covering bottom portion 61T, the first coating side portion 61R, and the second coating side portion 61S.

FIG. 9 is a cross-sectional view showing a modified example of the work bucket in FIG. With reference to FIG. 9, the covering member 61 has a surface 61a. The surface 61a defines a space 53 in the bucket body 51. The surface 61a has a concave-convex shape in which concave portions 68p recessed toward the inner wall 56 and convex portions 68q having a top surface 69 at the tip projecting toward the space 53 and projecting toward the space 53 are alternately arranged.

The recess 68p has a groove shape that extends linearly through the openings 67 adjacent to each other. The direction in which the recess 68p extends linearly may be the axial direction of the first rotation center axis 130 or the direction orthogonal to the first rotation center axis 130. The recesses 68p may be provided in a grid pattern in which a plurality of recesses 68p extending in the axial direction of the first rotation center axis 130 and a plurality of recesses 68p extending in a direction orthogonal to the first rotation center axis 130 intersect. ..

According to such a configuration, by forming the surface 61a of the covering member 61 into an uneven shape, it is possible to reduce the contact area between the surface 61a of the covering member 61 and the ground contact surface of the work W with respect to the surface 61a. As a result, the sticking phenomenon of the work W can be prevented more reliably.

Summarizing the structure of the work bucket 10 according to the embodiment of the present invention described above, the work bucket 10 according to the present embodiment has an inner wall 56, and the work is put into the space 53 surrounded by the inner wall 56. The bucket main body 51 and an air ejection portion 60 provided on the inner wall 56 and ejecting air toward the space 53 are provided.

According to the work bucket 10 according to the embodiment of the present invention configured as described above, the bucket main body 51 is formed by ejecting air from the side of the inner wall 56 of the bucket main body 51 toward the space 53 by the air ejection portion 60. It is possible to prevent the work sticking phenomenon.

In the present embodiment, the configuration in which the first air passage 66 and the opening 67 are provided in the covering member 61 covering the inner wall 56 of the bucket main body 51 has been described, but the configuration is not limited to such a configuration, and the first air passage and the first air passage and the opening 67 are provided. The opening may be provided directly in the bucket body 51.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and it is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

The present invention mainly applies to work buckets installed in machine tools.

10 Work bucket, 21 Splash guard, 22 Side surface, 26 Work spindle, 27 Chuck, 31 Support, 32 Base, 33 1st arm, 34 2nd arm, 35 1st insertion hole, 36 2nd insertion hole, 37 , 38 fittings, 39 pipes, 40 axles, 41 first axles, 46 second axles, 48 actuators, 51, 51A, 51B bucket bodies, 52 inlets, 53 spaces, 56 inner walls, 56P third side, 56Q 4th side, 56R 1st side, 56S 2nd side, 56T bottom, 60 air ejection part, 61 covering member, 61P 3rd covering side, 61Q 4th covering side, 61R 1st covering side , 61S 2nd coating side, 61T coating bottom, 61a surface, 66 1st air passage, 67 opening, 68p concave, 68q convex, 69 top surface, 71 1st boss, 72 2nd boss, 73 boss Inner air passage, 74 branch air passage, 80 second air passage, 100 machine tool, 110 rotation center shaft, 120 second rotation center shaft, 130 first rotation center shaft, 150 machining area, 161 workpiece recovery box, 162 Collection port.

Claims (6)

A bucket body having an inner wall and the work being put into the space surrounded by the inner wall,
Provided on the inner wall and provided with an air ejection portion for ejecting air toward the space .
The air ejection portion has a covering member provided so as to cover the inner wall.
A work bucket provided with a first air passage through which air flows and an opening for opening the first air passage toward the space. The work bucket according to claim 1 , wherein the covering member is provided with a plurality of the openings at intervals from each other. The work bucket according to any one of claims 1 or 2 , wherein the covering member is made of resin. The covering member has a surface that defines the space.
The surface has a concave-convex shape in which concave portions recessed toward the inner wall and convex portions protruding toward the space and having a top surface at the tip protruding toward the space are alternately arranged.
The work bucket according to any one of claims 1 to 3 , wherein the plurality of openings include the openings that open at the top surface. A bucket body having an inner wall and the work being put into the space surrounded by the inner wall,
Provided on the inner wall and provided with an air ejection portion for ejecting air toward the space.
The bucket body is rotatably supported around a predetermined axis.
The bucket body is provided with a slot for opening the space and loading a work.
The inner wall
A bottom portion facing the input port across the predetermined shaft, and
A first side portion and a second side portion that stand up from the bottom portion and face each other with the predetermined axis in between.
It has a third side portion and a fourth side portion that rise from the bottom portion and face each other in the axial direction of the predetermined axis.
The air is ejected to at least the bottom portion, the first side portion, and the second side portion of the bottom portion, the first side portion, the second side portion, the third side portion, and the fourth side portion. parts are provided, Wa Kubaketto. A bucket body having an inner wall and the work being put into the space surrounded by the inner wall,
An air ejection portion provided on the inner wall and ejecting air toward the space,
A support that rotatably supports the bucket body about a predetermined axis,
E Bei a shaft member connected to said support,
Wherein the shaft body, the second air passage for introducing air toward the air ejection portion is provided, Wa Kubaketto.

Images