WO2012042991A1

WO2012042991A1 - Shot treatment device

Info

Publication number: WO2012042991A1
Application number: PCT/JP2011/064578
Authority: WO
Inventors: 山下　恭司; ヨンギョジョン・; 鈴木　常俊; 山本　卓司
Original assignee: 新東工業株式会社
Priority date: 2010-09-30
Filing date: 2011-06-24
Publication date: 2012-04-05
Also published as: CN102985224A; TW201217100A; KR20130091254A; CN102985224B; KR101631683B1; JP5614455B2; TWI499484B; JPWO2012042991A1

Abstract

This shot treatment device (10) is provided with: a holding jig (14) that is capable of rotating and sliding, and that holds a workpiece (12) on the axis of rotation; and a pair of centrifugal projectors (22, 24). The pair of centrifugal projectors: (22, 24) each have a rotatable impeller (60), the axis of rotation (A) of each impeller (60) being parallel to each other; are positioned offset to each other in the direction of the axes of rotation of the impellers (60); and are capable of projecting a projection material in parallel towards the workpiece (12) according to the rotation of the impellers (60). Since the offsetting of the projection material from one centrifugal projector (22) and the project material from the other centrifugal projector (24) is minimized by this configuration, the projection efficiency can be improved even when the projection material is projected from the pair of centrifugal projectors (22, 24).

Description

Shot processing device

The present invention relates to a shot processing apparatus.

Patent Document 1 discloses a shot blasting device in which a centrifugal projector is provided at the upper and lower parts of a cabinet.

Patent Document 1: Japanese Patent No. 2868169

However, in the shot blasting device described in Patent Document 1, when the projection material is projected from each centrifugal projector, the projection material from the centrifugal projector provided in the upper part of the cabinet and the lower part of the cabinet are provided. There is a risk that the projection material from the centrifugal projector will cancel out and the projection efficiency will decrease.

The present invention has been made in view of the above problems, and an object thereof is to provide a shot processing apparatus capable of improving the projection efficiency.

In order to solve the above-described problem, the shot processing apparatus according to the first aspect of the present invention includes a holder that is rotatable and slidable, holds a workpiece on a rotation axis, and a rotatable impeller. The rotational axes of the impellers are parallel to each other, are offset from each other in the rotational axis direction of the impeller, and are parallel to the workpiece as the impellers rotate. A pair of centrifugal projectors capable of projecting the projection material.

In this shot processing apparatus, the holding tool rotates and slides while the work is held on the rotation axis of the holding tool. Then, by rotating the impellers provided in the pair of centrifugal projectors, the projection material is projected from each centrifugal projector onto the workpiece, thereby processing the workpiece.

Here, the pair of centrifugal projectors are arranged such that the rotation axes of the respective impellers are parallel to each other and are offset from each other in the direction of the rotation axis of the impeller. And thereby, a projection material is projected in parallel toward a workpiece | work from a pair of centrifugal projector. Therefore, even when a projection material is projected from each of the pair of centrifugal projectors, the projection material from one centrifugal projector and the projection material from the other centrifugal projector are suppressed from being offset. , Projection efficiency can be improved.

The shot processing apparatus of the invention according to the second aspect is the shot processing apparatus of the invention according to the first aspect, wherein the shot processing apparatus is arranged on the upper wall disposed above the holder and on the side of the holder. A cabinet having a side wall, and one of the pair of centrifugal projectors is provided on the upper wall and can project a projection material downward, and the other of the pair of centrifugal projectors is It is set as the structure which was provided in the said side wall and was able to project a projection material below.

According to this shot processing apparatus, since the pair of centrifugal projectors are provided on the upper wall and the side wall, respectively, for example, even if the workpiece has a complicated shape, it can cope with this ( Projection material can be properly projected onto the workpiece). Moreover, the pair of centrifugal projectors can project the projection material downward. Therefore, when a projection material is projected from a pair of centrifugal projectors, the projection material can be accelerated by the action of gravity, so that the projection efficiency can be further improved.

The shot processing apparatus of the invention according to a third aspect is the shot processing apparatus of the invention according to the first or second aspect, wherein the pair of centrifugal projectors are projected in a fan shape from each impeller. It is set as the structure arrange | positioned so that the spreading direction of the projection material on the holder may be orthogonal to the slide direction and the rotation axis direction of the holder.

According to this shot processing apparatus, in the pair of centrifugal projectors, the spreading direction of the projection material projected in a fan shape from each impeller is orthogonal to the sliding direction and the rotation axis direction of the holding tool, respectively. Are arranged to be. Therefore, for example, even when the workpiece is slid, it is possible to reduce the number of projection materials projected to a position off the workpiece as compared to the case where the above-described spreading direction is parallel to the sliding direction (of the projection material). Can reduce waste).

The shot processing apparatus of the invention according to a fourth aspect is the shot processing apparatus of the invention according to the third aspect, wherein the pair of centrifugal projectors are orthogonal to the slide direction and the rotation axis direction of the holder, respectively. When viewed from above, the rotating surface of each impeller is arranged to be inclined at a predetermined angle with respect to the rotation axis of the holder.

According to this shot processing apparatus, when viewed from a direction orthogonal to the sliding direction and the rotation axis direction of the holder, the pair of centrifugal projectors has a rotating surface of each impeller with respect to the rotation axis of the holder. Are arranged so as to be inclined at a predetermined angle. Therefore, since the projection material can be projected onto the workpiece from a direction oblique to the rotation axis of the holder, the projection material can be projected onto this portion even if the workpiece has a side surface or a shadow portion. In addition, the projection material can be projected over a wider area of the workpiece.

A shot processing apparatus according to a fifth aspect of the present invention is the shot processing apparatus according to the first to fourth aspects of the invention, wherein a rotation driving unit that rotates the holding tool, a slide driving unit that slides the holding tool, Driving the slide drive unit to stop the holder at a plurality of stop positions in the slide direction, and driving the rotation drive unit when the holder is stopped at each stop position. A control unit for rotating the holder and operating the pair of centrifugal projectors to project the projection material.

According to this shot processing apparatus, since the projection material can be projected onto the rotating workpiece while the holder is stopped at a plurality of stop positions in the sliding direction, projection unevenness can be suppressed.

The shot processing apparatus of the invention according to a sixth aspect is the shot processing apparatus of any one of the inventions according to the first to fifth aspects, wherein the pair of centrifugal projectors have the same configuration, A control unit for controlling the pair of centrifugal projectors is provided so that the impeller is rotated at the same rotational speed.

According to this shot processing apparatus, the pair of centrifugal projectors have the same configuration as each other, and each impeller is also rotated at the same rotational speed, so that the apparatus can be simplified. Cost can be reduced.

[The invention's effect]

As described above in detail, according to the present invention, the projection efficiency can be improved.

It is a front view of a shot processing device concerning a first embodiment of the present invention. It is a left view of the shot processing apparatus shown by FIG. It is a perspective view explaining the arrangement | positioning relationship of a pair of centrifugal projector shown by FIG. 1, a cabinet, and a holder. It is a top view explaining the sliding range of the holder shown by FIG. It is a front view of the shot processing apparatus which concerns on 2nd embodiment of this invention. FIG. 6 is a left side view of the shot processing apparatus shown in FIG. 5. It is a top view explaining the sliding range of the holder shown by FIG.

First, a first embodiment of the present invention will be described.

Note that arrows FR, UP, and LH shown in the drawings indicate the front side, the upper side, and the left side of the shot processing apparatus 10 described below.

As shown in FIG. 1, the shot processing apparatus 10 according to the first embodiment of the present invention is, for example, a shot blasting apparatus used to remove oxide scale attached to a workpiece 12 made of metal. The holder 14, the cabinet 16, the rotation driving unit 18, the slide driving unit 20, a pair of

centrifugal projectors

22 and 24, and a control unit 26 are provided.

The holder 14 is formed in a disk shape and provided horizontally. A shaft portion 28 extending downward along the height direction of the shot processing apparatus 10 is formed in the central portion on the back side of the holder 14. The holder 14 can be rotated about the height direction of the shot processing apparatus 10 as a central axis by the shaft portion 28 being rotatably supported by a support portion 52 provided in the rotation driving portion 18 described later. Has been.

The cabinet 16 is configured in a box shape and accommodates the holder 14. The cabinet 16 has an upper wall 30 disposed above the retainer 14 and a plurality of

side walls

32, 34, 36, 38 disposed on the side of the retainer 14.

The rotation driving unit 18 is for rotating the holder 14, and includes a motor 40, a roller 42, and a rotating member 44. The motor 40 is fixed to an arm 50 of the slide drive unit 20 described later, and the roller 42 is fixed to the rotating shaft of the motor 40. The rotating member 44 is arranged coaxially with the holder 14 and is fixed to the holder 14. The roller 42 is in contact with the rotating member 44 while being pressed. And in this autorotation drive part 18, when the roller 42 rotates, the holder 14 is made to autorotate with the rotation member 44. As shown in FIG.

The slide drive unit 20 is for sliding the holder 14 in the front-rear direction of the shot processing apparatus 10, and includes a motor 46, a rotation shaft 48, an arm 50, and a support unit 52. The motor 46 and the rotation shaft 48 are arranged such that the rotation axis coincides with the height direction of the shot processing apparatus 10. The motor 46 is fixed to the side wall 34, and the rotation shaft 48 is rotatably supported on the side wall 34.

A gear 54 is provided on the rotation shaft of the motor 46, and the gear 54 meshes with a gear 56 provided at the upper end of the rotation shaft 48. The arm 50 extends in the horizontal direction, and its length is set longer than the radius of the holder 14. A base end portion of the arm 50 is fixed to an intermediate portion in the longitudinal direction of the rotating shaft 48, and a support portion 52 is provided at the distal end portion of the arm 50. In this shot processing apparatus 10, the holder 14 can be slid in the horizontal direction (reciprocally movable) by rotating the rotating shaft of the motor 46 forward and backward and swinging the arm 50.

As shown in FIG. 2, the pair of

centrifugal projectors

22 and 24 are so-called centrifugal types having an impeller 60 and a motor 62, respectively, and have the same configuration. One centrifugal projector 22 is provided on an inclined portion 30 </ b> A formed on the side wall 32 side of the upper wall 30, and the other centrifugal projector 24 is provided on the upper wall 30 side of the side wall 32. . Each impeller 60 is fixed to the rotating shaft of the motor 62.

Further, the pair of

centrifugal projectors

22 and 24 are arranged such that the rotational axes A of the respective impellers 60 are parallel to each other and are offset from each other in the rotational axis direction of the impeller 60 (offset amount). Is α). In addition, the pair of

centrifugal projectors

22 and 24 have the rotation surface of each impeller 60 when viewed from the direction X (see FIG. 3) orthogonal to the sliding direction Y and the rotation axis direction Z of the holder 14. B (surface perpendicular to the rotation axis of the impeller 60) is inclined with respect to the rotation axis C of the holder 14 so as to have angles of θ1 and θ2, respectively. (See Figure 2)

In the shot processing apparatus 10, as shown in FIG. 3, the projection material 68 is projected in parallel toward the workpiece 12 as each impeller 60 rotates. That is, the projection material 68 is projected from one centrifugal projector 22 toward the first region S1 in the slide region S of the holder 14, and from the other centrifugal projector 24, the projection 14 of the holder 14 is projected. In the slide area S, the projection material 68 is projected toward the first area S1 and the second area S2 adjacent to the holder 14 in the sliding direction Y.

Further, in this pair of

centrifugal projectors

22 and 24, the spreading direction W of the projection material 68 projected from the impeller 60 in a fan shape on the holder 14 is the sliding direction Y and the rotation axis of the holder 14. They are arranged so as to be orthogonal to the direction Z. The pair of

centrifugal projectors

22 and 24 are disposed above the holder 14 so that the projection material 68 can be projected downward.

In the present embodiment, as shown in FIG. 2, as an example, the inclination angles θ1 and θ2 formed by the rotation surface B of each impeller 60 and the rotation axis C of the pair of

centrifugal projectors

22 and 24 are It is set to be greater than 0 ° and not more than 35 °, preferably 15 °. 4, the swing angle θ3 of the arm 50 is set to 40 ° or less, preferably 22 °, and the slide range L of the holder 14 is set to 500 mm or less, preferably 300 mm. ing. Further, the position of the holder 14 in the sliding direction is detected by detecting the number of rotations of the rotating shaft 48 with a sensor (not shown).

The control unit 26 shown in FIGS. 1 and 2 is electrically connected to the motor 40 of the rotation driving unit 18, the motor 46 of the slide driving unit 20, and the motors 62 of the pair of

centrifugal projectors

22 and 24. And is configured to control these operations. The details of the operation of the control unit 26 will be described together with the operation of the shot processing apparatus 10 later.

Further, the shot processing apparatus 10 includes a screw conveyor 80, a bucket elevator 82, a separator 84, a hopper 86, and a mechanism for reducing the projection material projected onto the workpiece 12 to the

centrifugal projectors

22 and 24. A pair of

introduction pipes

88 and 90 is provided.

The screw conveyor 80 is arranged at the lower part of the cabinet 16 and is configured to be able to collect the projected projection material at a location on the bucket elevator 82 side. The bucket elevator 82 is connected to the screw conveyor 80, The projection material collected by the screw conveyor 80 can be lifted upward.

The separator 84 is connected to the upper part of the bucket elevator 82 and has a dust collection duct flange (not shown). The hopper 86 is disposed below the separator 84 and is configured to temporarily store the projection material. The

introduction pipes

88 and 90 connect the hopper 86 and the

centrifugal projectors

22 and 24, respectively. It is connected.

Next, a method for shot blasting the workpiece 12 will be described together with the operation of the shot processing apparatus 10 described above.

First, as shown in FIGS. 1 and 2, the motor 40 is controlled by the control unit 26 in a state where the workpiece 12 is held on the rotation axis C of the holder 14, and the holder 14 is rotated. At this time, the holder 14 is maintained in a state stopped at the first stop position (position indicated by P1 in FIG. 4). Further, the motor 62 is controlled by the control unit 26 and the impeller 60 is rotated, whereby the projection material is projected from the

centrifugal projectors

22 and 24 onto the workpiece 12. Thereby, the polishing of the workpiece 12 is started while the holder 14 is rotated in a state of being stopped at the first stop position.

Subsequently, after the projection material is projected onto the workpiece 12 for a predetermined time, the motor 46 is controlled by the control unit 26, and the holder 14 is in the second stop position (the position indicated by P2 in FIG. For example, when the slide range of the holder 14 is 300 mm, the holder 14 is slid to a position 150 mm from the first stop position). Then, the polishing of the workpiece 12 is continued while the holder 14 is rotated in a state stopped at the second stop position.

Similarly to the above, after the projection material is projected onto the workpiece 12 for a predetermined time, the motor 46 is controlled by the control unit 26, and the holder 14 is in the third stop position (position indicated by P3 in FIG. 4). Slide up to. Then, the polishing of the workpiece 12 is continued while the holder 14 is rotated in a state of being stopped at the third stop position.

On the other hand, when the projection material is projected onto the workpiece 12 for a predetermined time while the holder 14 is stopped at the third stop position, the control unit 26 controls the motor 46 to be driven in the opposite direction. Then, the holder 14 is slid to the second stop position. Then, the polishing of the workpiece 12 is continued while the holder 14 is rotated in a state stopped at the second stop position.

Similarly to the above, after the projection material is projected onto the work 12 for a predetermined time, the motor 46 is controlled by the control unit 26 and the holder 14 is slid to the first stop position. Then, the polishing of the workpiece 12 is continued while the holder 14 is rotated in a state of being stopped at the first stop position.

In the shot processing apparatus 10, the workpiece 12 is sharpened by repeating the above-described steps a plurality of times. During the above process, the impeller 60 is rotated at the same rotational speed. Further, the above method is an example, and various modifications can be made within the range in which the shot processing apparatus 10 can operate in addition to the above.

Next, the operation and effect of the first embodiment of the present invention will be described.

As shown in FIG. 2, according to the shot processing apparatus 10 according to the first embodiment of the present invention, the pair of

centrifugal projectors

22, 24 are configured such that the rotation axes A of the respective impellers 60 are parallel to each other. And are offset from each other in the rotational axis direction of the impeller 60. As a result, the projection material is projected in parallel toward the workpiece 12 from the pair of centrifugal projectors 22 and 24 (see FIG. 3). Therefore, even when the projection material is projected from the pair of

centrifugal projectors

22 and 24, the projection material from one centrifugal projector 22 and the projection material from the other centrifugal projector 24 are offset. Is suppressed, so that the projection efficiency can be improved.

In addition, since the pair of

centrifugal projectors

22 and 24 are provided on the upper wall 30 and the side wall 32, respectively, for example, even if the workpiece 12 has a complicated shape, it can cope with this ( The projection material can be appropriately projected onto the workpiece 12). Moreover, the pair of

centrifugal projectors

22 and 24 can project the projection material downward. Therefore, when the projection material is projected from the pair of

centrifugal projectors

22 and 24, the projection material can be accelerated by the action of gravity, so that the projection efficiency can be further improved.

Further, as shown in FIG. 3, the pair of

centrifugal projectors

22, 24 has a spreading direction W on the holder 14 of the projection material projected in a fan shape from each impeller 60. They are arranged so as to be orthogonal to the sliding direction Y and the rotation axis direction Z, respectively. Therefore, for example, as compared with the case where the spreading direction W is parallel to the sliding direction Y, the number of projection materials projected to a position deviated from the workpiece 12 can be reduced even when the workpiece 12 is slid. (The waste of the projection material can be suppressed).

Further, as shown in FIG. 2, the pair of

centrifugal projectors

22 and 24, when viewed from the direction X (see FIG. 3) orthogonal to the sliding direction Y and the rotation axis direction Z of the holder 14, The rotation surface B of each impeller 60 (surface perpendicular to the rotation axis of the impeller 60) is disposed so as to have an angle of θ1 and θ2 with respect to the rotation axis C of the holder 14 respectively. Accordingly, since the projection material can be projected onto the workpiece 12 from an oblique direction with respect to the rotation axis C of the holder 14, even if the workpiece 12 has a side or shadow portion, the projection material is applied to this portion. Can be projected, and the projection material can be projected over a wider range of the workpiece 12.

Further, since the projection material can be projected onto the rotating workpiece 12 in a state where the holder 14 is stopped at a plurality of stop positions in the slide direction, projection unevenness can be suppressed.

Further, the pair of

centrifugal projectors

22 and 24 have the same configuration, and the impellers 60 are also rotated at the same rotational speed, so that the apparatus can be simplified and the cost can be reduced. can do.

Next, a modification of the first embodiment of the present invention will be described.

In the above embodiment, the shot processing apparatus 10 is used as a shot blasting apparatus, but may be used as a shot peening apparatus.

The holder 14 is a so-called table type supported from below, but may be a so-called hanger type suspended from above.

Moreover, although the control part 26 was comprised so that the holder 14 might be stopped at three stop positions, if there are multiple places, a stop position may be other than three places.

Next, a second embodiment of the present invention will be described.

A shot processing apparatus 110 according to the second embodiment of the present invention shown in FIGS. 5 to 7 includes a slide drive unit 120 instead of the slide drive unit 20 (see FIG. 1).

The slide drive unit 120 includes a motor 146, a bracket 148, a chain 150, a slider 152, and a pair of rails 154. The motor 146 is fixed to the lower wall of the cabinet 16, and a gear 156 is fixed to the rotating shaft thereof. The bracket 148 is provided horizontally along the front-rear direction of the shot processing apparatus 110, and is fixed to the slider 152.

The chain 150 is provided along the lower part of the bracket 148 and meshes with the gear 156. The slider 152 supports the holder 14 so as to be capable of rotating, and is slidably supported by the pair of rails 154. The pair of rails 154 are arranged side by side in the left-right direction of the shot processing apparatus 110 and extend in the front-rear direction of the shot processing apparatus 110.

In the slide drive unit 120, when the motor 146 is driven and the gear 156 is rotated, the slider 152 and the holder 14 are slid together with the chain 150. The position of the holder 14 in the sliding direction is detected by detecting the sliding position of the slider 152 with a sensor (not shown). The rotation driving unit 18 is fixed to the bracket 148, and the holder 14 is supported by the slider 152 so as to be able to rotate.

Even in such a configuration, the same operation and effect as the above-described shot processing apparatus 10 (see FIGS. 1 to 4) according to the first embodiment of the present invention can be performed. be able to.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and other various modifications can be made without departing from the spirit of the present invention. It is.

DESCRIPTION OF SYMBOLS 10,110 Shot processing apparatus 12 Work 14 Holder 16 Cabinet 18 Autorotation drive part 20,120 Slide drive

part

22,24 Centrifugal projector 26 Control part 30 Upper wall 32 Side wall 60 Impeller A Impeller rotation axis B Impeller Rotation surface (surface perpendicular to the impeller rotation axis)
C Rotation axis W of holder X Spreading direction X of projection material on holder X Slide direction of holder and direction orthogonal to rotation axis direction Y Slide direction of holder Z Direction of rotation axis of holder

Claims

A holder that is rotatable and slidable and holds a workpiece on a rotation axis;
Each of the impellers is rotatable, the rotation axes of the impellers are parallel to each other, and are offset from each other in the direction of the rotation axis of the impeller. A pair of centrifugal projectors capable of projecting a projection material in parallel toward the workpiece,
A shot processing apparatus comprising:
A cabinet having an upper wall disposed above the holder and a side wall disposed on a side of the holder;
One of the pair of centrifugal projectors is provided on the upper wall and can project a projection material downward,
The other of the pair of centrifugal projectors is provided on the side wall and can project a projection material downward.
The shot processing apparatus according to claim 1.
The pair of centrifugal projectors are arranged such that the spreading direction of the projection material projected in a fan shape from each impeller is perpendicular to the slide direction and the rotation axis direction of the holder. Being
The shot processing apparatus according to claim 1 or 2.
When the pair of centrifugal projectors are viewed from directions orthogonal to the sliding direction and the rotation axis direction of the holder, the rotation surface of each impeller is inclined at a predetermined angle with respect to the rotation axis of the holder. Arranged to
The shot processing apparatus according to claim 3.
A rotation driving unit for rotating the holder;
A slide drive unit for sliding the holder;
The slide drive unit is driven to stop the holder at a plurality of stop positions in the slide direction, and the rotation drive unit is driven to stop the holder at the stop positions. A control unit for rotating the holder and operating the pair of centrifugal projectors to project the projection material;
The shot processing apparatus according to any one of claims 1 to 4, further comprising:
The pair of centrifugal projectors have the same configuration,
A control unit that controls the pair of centrifugal projectors so that each impeller is rotated at the same rotational speed,
The shot processing apparatus according to any one of claims 1 to 4.