JP2014155977A - Blast processing apparatus and blast processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blast processing apparatus which is flexibly adapted to the size and shape of a workpiece and enables stable blast processing, and to provide a blast processing method.SOLUTION: A blast processing apparatus according to one embodiment comprises: a nozzle; a moving mechanism; and a weight. The nozzle jets a blast material. The moving mechanism reciprocates the nozzle along a track. The weight cancels out vibrations resulting from the reciprocating movement of the nozzle. A blast processing method according to one embodiment comprises the steps of: jetting the blast material from the nozzle; reciprocating the nozzle along the track and thereby manufacturing a blast processing object; and cancelling out the vibrations resulting from the reciprocating movement of the nozzle with the weight.

Description

  Embodiments described herein relate generally to a blast processing apparatus and a blast processing method.

  Conventionally, blasting is known as a surface treatment technique in which hard particles are jetted by compressed air and collide with the surface of a workpiece such as a machined part or a painted part. According to the blast treatment, rust and dirt on the workpiece surface can be removed. For this reason, the blast treatment is mainly used for surface treatment such as paint peeling and shot peening as well as ground treatment such as painting.

  The blasting process is performed by injecting a blasting material together with compressed air from a blasting process nozzle toward a workpiece. For this reason, in the blast treatment, it is a problem to prevent the sprayed blast material from being scattered. Therefore, in order to prevent the blast material from scattering, there is provided a blast processing apparatus having a structure in which a pipe for collecting the blast material is provided in the vicinity of the nozzle for injecting the blast material and the nozzle and the pipe for collecting are covered with a casing. It has been proposed (see Patent Document 1, Patent Document 2, and Patent Document 3, for example).

  Further, a technique has been devised in which a nozzle is moved by an articulated manipulator so that a large workpiece such as a hull outer plate can be cleaned by a sandblast method (see, for example, Patent Document 4). In this technique, the nozzle is configured to be able to self-propell with a wheel together with a casing covering the nozzle. Further, a counterweight for balancing the actuator is used as a driving source for raising the nozzle in the vertical direction.

JP-A-8-252769 JP 2000-190226 A JP 2004-25351 A JP 59-14596 A

  However, the conventional blasting apparatus has a problem that it is difficult to perform a blasting process on a rough surface or a workpiece having a large area. For example, when there is unevenness on the surface of the workpiece, interference with the workpiece occurs when a casing for preventing the blast material from scattering is installed. On the other hand, if the casing for preventing scattering is kept away from the workpiece or the casing for preventing scattering is removed, it is not possible to prevent the blast material from scattering.

  Further, when the blast material is scattered, there is a problem that dust of the blast material is mixed in a driving unit such as a link mechanism. For this reason, when large workpieces that require moving the blasting material injection nozzle are targeted for blasting, the nozzle is moved with an articulated manipulator that covers the joint with a dustproof cover. The measure of moving is taken.

  However, when an articulated manipulator is used, the movement range of the nozzle is limited depending on the indirect length of the manipulator. For this reason, when the size of the workpiece is extremely large, it is necessary to prepare a manipulator having a very long joint according to the size of the workpiece.

  In particular, the length of a panel for an outer plate, which is one of aircraft parts, is on the order of a metric class, and many protrusions such as stringers are fixed. For this reason, it is difficult to use a conventional blasting apparatus for an aircraft panel. As a result, the present situation is that manual work is performed by the operator to polish the workpiece with sandpaper as the ground treatment before painting the aircraft panel.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a blast processing apparatus and a blast processing method that can flexibly adapt to the size and shape of a workpiece and can stably perform blast processing.

A blasting apparatus according to an embodiment of the present invention includes a nozzle, a moving mechanism, and a weight. The nozzle injects blast material. The moving mechanism reciprocates the nozzle along the track. The weight counteracts the vibration caused by the reciprocating movement of the nozzle.
Further, the blasting method according to the embodiment of the present invention uses a step of injecting a blast material from a nozzle, a step of manufacturing a blasted product by reciprocating the nozzle along a track, and a weight. And a step of canceling vibrations caused by the reciprocating movement of the nozzle.

  According to the blasting apparatus and the blasting method according to the embodiment of the present invention, it is possible to flexibly adapt to the size and shape of the workpiece and to perform blasting stably.

The front view of the blast processing apparatus which concerns on the 1st Embodiment of this invention. Sectional drawing seen from position AA of the blast processing apparatus shown in FIG. The rear view of the blast processing apparatus shown in FIG. Sectional drawing seen from position BB of the blast processing apparatus shown in FIG. The front view of the blast processing apparatus which concerns on the 2nd Embodiment of this invention. Sectional drawing seen from position CC of the blast processing apparatus shown in FIG.

  A blast processing apparatus and a blast processing method according to embodiments of the present invention will be described with reference to the accompanying drawings.

(First embodiment)
(Configuration and function)
1 is a front view of a blasting apparatus according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view of the blasting apparatus shown in FIG. 1 as viewed from a position AA, and FIG. 3 is a diagram of the blasting apparatus shown in FIG. 4 is a cross-sectional view of the blasting apparatus shown in FIG.

  The blast treatment apparatus 1 can be configured by using a nozzle 2 for injecting the blast material B and a moving mechanism 3 for reciprocating the nozzle 2 along a track. In the illustrated example, a plurality of nozzles 2 are provided in the blast processing apparatus 1 so as to improve the efficiency of the blast processing. Each nozzle 2 is attached to the tip of a supply hose of blast material B. The other end of the blast material B is connected to a supply system for the blast material B. However, the supply system of the blast material B and the supply hose are not shown.

  Preferably, the blast treatment apparatus 1 is provided with a dustproof body 4 that covers at least the nozzle 2 and prevents the blast material B from scattering. The dustproof body 4 may be a rigid dustproof case that also serves as a housing as shown in the figure, or may be a dustproof cover having flexibility.

  In the illustrated example, one surface side of the dustproof body 4 as a dustproof case is opened. And the blast material B can be injected toward a workpiece | work from the open side of the dustproof body 4. FIG. Of course, you may make it install a workpiece | work inside the dustproof body 4 as a housing | casing. Further, when the work is always installed inside the dustproof body 4, the four sides of the dustproof body 4 are closed so that a dustproof effect can be obtained, and an opening / closing door for taking in and out the work is provided. Good.

  On the other hand, a transparent confirmation window 4A is provided on the surface of the dustproof body 4 opposite to the workpiece for confirmation of blasting. Further, in the vicinity of the bottom surface of the dustproof body 4, a gap 4 </ b> B for passing the supply hose of the blast material B is provided.

  The moving mechanism 3 can be composed of a motor 5, a rotating body 6, a power transmission mechanism 7, and a rod-shaped member 8. The motor 5 is a power source for the moving mechanism 3. The output shaft 5 </ b> A of the motor 5 is connected to the rotating shaft 6 </ b> A of the rotating body 6 by the power transmission mechanism 7. The rotating body 6 is configured to repeat normal rotation and reverse rotation with the output of the motor 5 as a power source and the rotating shaft 6A as a fulcrum. Therefore, the motor 5 has the output shaft 5A at a position that is not collinear with the rotational shaft 6A of the rotating body 6.

  The rod-shaped member 8 is a member for fixing a single or a plurality of nozzles 2. As shown in the drawing, when the plurality of nozzles 2 are arranged in the horizontal direction, the rod-like member 8 is arranged so that the longitudinal direction is the horizontal direction. The rod-shaped member 8 is connected to the rotating body 6. As a result, one end side of the rotator 6 is connected to the nozzle 2 via the rod-shaped member 8.

  The rod-shaped member 8 can be connected by a shaft, a bearing, or the like so that it can rotate with respect to the rotating body 6. If the rod-like member 8 is rotatably connected to the rotating body 6, a link mechanism is formed. For this reason, each nozzle 2 can be reciprocated with the rod-shaped member 8 like a wiper by the reciprocating movement of the rotary body 6. However, when the number of the rotating bodies 6 is one, the rod-shaped member 8 may be fixed to the rotating body 6 in order to improve the stability.

  On the other hand, as shown in the drawing, a plurality of rod-shaped rotating bodies 6 can be rotatably coupled to a common rod-shaped member 8. That is, a plurality of rotating bodies 6 that repeat normal rotation and reverse rotation with the corresponding rotation shaft 6A as a fulcrum can be connected to the rod-shaped member 8 at one end side from each fulcrum. In this case, a link mechanism is formed by the plurality of rotating bodies 6 and the rod-shaped member 8. For this reason, the rigidity of the moving mechanism 3 can be improved. In addition, the rod-shaped member 8 can always be reciprocated in the horizontal direction.

  The nozzle 2 may be directly fixed to the rotating body 6. In that case, the rod-shaped member 8 can be omitted. However, even when the nozzle 2 is directly fixed to the rotating body 6, the rigidity of the moving mechanism 3 can be improved by connecting the plurality of rotating bodies 6 with the rod-shaped member 8.

  As shown in the figure, when the moving mechanism 3 is configured using a plurality of rotating bodies 6, at least one rotating body 6 may be connected to the motor 5 by the power transmission mechanism 7. The power transmission mechanism 7 is configured to transmit the rotational power in one direction of the output shaft 5 </ b> A of the motor 5 to the rotational shaft 6 </ b> A as power for repeating normal rotation and reverse rotation of the rotating body 6. Therefore, the moving mechanism 3 is a crank mechanism by the components including the motor 5.

  The moving mechanism 3 can also be configured by arranging the motor 5 so that the output shaft 5A of the motor 5 is collinear with the rotating shaft 6A of the rotating body 6. However, in order to reciprocate the rotating body 6, it is necessary to intermittently reverse the rotation direction of the output shaft 5A of the motor 5. That is, it is necessary to provide the motor 5 on which the output shaft 5A repeats normal rotation and reverse rotation on the rotation shaft 6A of the rotating body 6. However, if the rotation direction of the motor 5 is changed, the motor 5 is consumed. Therefore, if the output shaft 5 </ b> A of the motor 5 is shifted from the rotation shaft 6 </ b> A of the rotating body 6 and is connected by the power transmission mechanism 7, consumption of the motor 5 can be suppressed.

  The power transmission mechanism 7 can be constituted by the rotating plate 9 and the connecting rod 10. The rotating plate 9 is fixed to the output shaft 5 </ b> A of the motor 5. The connecting rod 10 is rotatably connected to a portion of the rotating body 6 that is not on the rotating shaft 6 </ b> A and a portion other than the rotation center of the rotating plate 9. The connecting rod 10 can also be directly connected to the rotating body 6.

  However, as shown in the drawing, one end of a rod-shaped lever 11 is fixed to the rotating shaft 6A of the rotating body 6 so that the rotating body 6 and the lever 11 are separated at a predetermined interval. If the connecting rod 10 is rotatably connected to the end, at least the motor 5 and the power transmission mechanism 7 can be arranged outside the dustproof body 4. That is, the drive part of the link mechanism can be arranged outside the dustproof body 4. For this reason, clogging of the power transmission mechanism 7 and the motor 5 due to scattering of the blast material B can be prevented.

  In addition, it is desirable to adjust the weight on the opposite side of the connecting position of the connecting rod 10 with respect to the rotation center of the rotating plate 9 to a weight that suppresses vibration caused by the rotation of the rotating plate 9. That is, from the viewpoint of suppressing vibration of the rotating plate 9, it is preferable to adjust the weight of the rotating plate 9 so that the rotational moment due to gravity around the rotation center of the rotating plate 9 including the weight of the connecting rod 10 becomes zero. It is.

  As a specific example, a plurality of through holes in the plate thickness direction are provided on the side of the rotating plate 9 to which the connecting rod 10 is connected to reduce the weight of the rotating plate 9 and the torque required for rotation, while the connecting rod of the rotating plate 9 By relatively increasing the plate thickness on the side to which 10 is not connected, the rotational moment due to gravity can be balanced. Thereby, the vibration of the rotating plate 9 can be suppressed, and uneven wear of the bearings used for connecting the connecting rods 10 can be avoided.

  Further, the blasting device 1 is provided with a weight 12 that cancels vibrations generated as the nozzle 2 reciprocates. The weight 12 is provided on the other end side of the fulcrum of the rotating body 6. Therefore, as shown in the drawing, when a plurality of rotating bodies 6 are provided, the weights 12 are provided on the other end side from the respective fulcrums of the plurality of rotating bodies 6.

  The weight and position of the weight 12 are determined such that the rotational moment due to gravity on the nozzle 2 side around the fulcrum of the rotating body 6 is equal to or less than the rotational moment due to gravity on the weight 12 side around the fulcrum. Therefore, the weight of the weight 12 can be reduced as the length of the rotating body 6 is increased and the distance between the fulcrum and the weight 12 is increased.

  In principle, it is optimal to determine the weight and position of the weight 12 so that the rotational moment due to gravity around the fulcrum of the rotating body 6 becomes zero. However, if it is difficult to balance the rotational moments to prevent mechanical interference, it is better to make the lower rotational moment larger than the upper rotational moment to improve stability by lowering the center of gravity. Connect

  In the illustrated example, the upper end of each rod-like rotating body 6 is connected to the nozzle 2. Accordingly, the disc-like weight 12 is fixed to the lower end of each rod-like rotating body 6. Of course, the weight 12 may be attached to the upper side of the rotating body 6 and the nozzle 2 may be connected to the lower side. Further, the rod-shaped member 8 and the rotating body 6 may be arranged so that the nozzle 2 reciprocates in the vertical direction or a desired direction, and the weight 12 may be attached to the other end side of the rotating body 6.

  As another feature of the moving mechanism 3, it is preferable that the moving mechanism 3 is configured such that the height of the rod-like member 8 for fixing the nozzle 2 is maximized when the weight 12 is at the minimum height. . In this case, when the longitudinal direction of each rotating body 6 becomes a vertical direction and the weight 12 reaches the lowest point, the angles formed by the longitudinal direction of each rotating body 6 and the longitudinal direction of the rod-shaped member 8 are all right angles. Become. Therefore, when the nozzle 2 is swung, the left and right movements are symmetrical, and the left and right movement amounts are equalized. As a result, it is possible to reduce a decrease in service life due to local wear of a bearing used for connecting the rotating body 6 and the rod-shaped member 8.

(Operation and action)
Next, the operation and action of the blast processing apparatus 1 will be described.

  When blast processing is performed using the blast processing device 1, the blast processing device 1 itself can be installed on a transport device such as a gondola according to the size and shape of the workpiece to be blasted. Therefore, if the blasting apparatus 1 is used, it is possible to easily perform blasting even for a large workpiece having irregularities such as an aircraft panel to which a stringer is attached. Of course, when the work is small, the blast processing apparatus 1 may be installed without using the transfer apparatus. Moreover, you may mount the workpiece | work side in a conveying apparatus.

  When actually performing the blasting process, the work is set at the tip of the nozzle 2 of the blasting apparatus 1. Or conversely, the blast processing apparatus 1 is arrange | positioned according to a workpiece | work. The blast material B is supplied from the supply system of the blast material B through the supply hose. As a result, the blast material B is sprayed from the nozzle 2 toward the workpiece.

  On the other hand, the motor 5 is driven and the output shaft 5A rotates. The rotational torque of the output shaft 5 </ b> A is transmitted as reciprocating torque to the rotational shaft 6 </ b> A of the rotating body 6 via the power transmission mechanism 7. Specifically, the rotating plate 9 is rotated by the rotation of the output shaft 5 </ b> A of the motor 5. For this reason, one end of the connecting rod 10 that is rotatably connected to the rotating plate 9 rotates and moves while drawing a circular locus. On the other hand, the other end of the connecting rod 10 alternately and periodically applies pressing force and tensile force to the end of the lever 11 according to the position of the end of the connecting rod 10 on the rotating plate 9 side.

  As a result, the end of the lever 11 on the side of the connecting rod 10 reciprocates along an arc-shaped locus centering on the rotation shaft 6A. For this reason, the other end of the lever 11 rotates by a predetermined angle while periodically changing the rotation direction together with the rotation shaft 6A. Therefore, the rotating body 6 fixed to the rotating shaft 6A also rotates by a predetermined angle while periodically changing the rotating direction around the rotating shaft 6A. That is, the rotating body 6 reciprocates.

  When the rotating body 6 reciprocates, the nozzle 2 reciprocates along an arcuate track along with the rod-shaped member 8 connected to the rotating body 6. Further, the other rotating body 6 connected to the rod-shaped member 8 and not directly connected to the power transmission mechanism 7 reciprocates along the same locus as that of the rotating body 6 directly connected to the power transmission mechanism 7. As a result, the blast material B is applied to a predetermined range of the work corresponding to the movement range of the nozzle 2.

  At this time, the blasting apparatus 1 or the conveying apparatus on which the work is installed can be driven to move the nozzle 2 relative to the work in a desired direction. For example, every time the nozzle 2 reaches the left and right ends, the nozzle 2 can be intermittently stepped in the vertical direction. Then, the workpiece can be blasted over a wide range. A blasted product can be manufactured by blasting a necessary area.

  The nozzle 2 periodically reciprocates as the motor 5 rotates. However, a weight 12 is attached to the other end of the rotating body 6 so that the rotational moment due to gravity is balanced. For this reason, the vibration which arises with the reciprocation of the nozzle 2 is canceled. As a result, the workpiece blasting process can be performed stably.

  In other words, the blast processing apparatus 1 as described above is configured such that the injection portion of the blast material B including the nozzle 2 is reciprocated by the crank mechanism. Furthermore, a weight 12 is provided in order to suppress vibration generated when the nozzle 2 is reciprocated.

(effect)
For this reason, according to the blast processing apparatus 1, it can adapt flexibly to the size and shape of a workpiece | work, and can perform a blast process stably. That is, the blast processing apparatus 1 has a structure in which the nozzle 2 is reciprocated by a crank mechanism, instead of the structure in which the nozzle is attached to the tip of the articulated arm as in the prior art. Moreover, the power transmission mechanism 7 for transmitting the output of the motor 5 can be disposed outside the dustproof body 4. For this reason, the site | part which may cause clogging by scattering of the blast material B can be minimized. As a result, conventional components such as a dustproof cover and a vacuum mechanism that cover the vicinity of the nozzle can be eliminated. Thereby, it is possible to easily perform the blasting process even for an uneven workpiece.

  Further, the weight 12 can suppress vibration that may occur due to the reciprocating movement of the nozzle 2. In other words, the conventional articulated arm type that moves the nozzle or the type that adsorbs the dustproof cover to the workpiece by vacuuming does not cause the problem of vibration itself, but the weight of vibration that becomes a problem when adopting the crank mechanism is weighted. 12 can be effectively suppressed. As a result, the nozzle 2 can reciprocate using the crank mechanism.

  The blasting process can be stably executed even when the nozzle 2 is periodically reciprocated. In particular, it is possible to greatly suppress vibration when the nozzle 2 is arranged at a high place. For this reason, it becomes possible to arrange the nozzle 2 at a high place. That is, the blasting device 1 including the nozzle 2 can be moved over a wide range.

  Therefore, even a large workpiece such as an aircraft part can be easily subjected to blasting by moving the blasting device 1 over a wide range using a transfer device or the like. That is, according to the blast processing apparatus 1, a very wide range of blast processing is possible.

(Second Embodiment)
FIG. 5 is a front view of a blasting apparatus according to the second embodiment of the present invention, and FIG. 6 is a cross-sectional view of the blasting apparatus shown in FIG.

  The blast processing apparatus 1A in the second embodiment shown in FIG. 5 is different from the blast processing apparatus 1 in the first embodiment in that the weight 12 is reciprocated by the weight control mechanism 20. Since other configurations and operations are not substantially different from those of the blast processing apparatus 1 in the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

  The blast processing apparatus 1A includes a sensor 21 and a weight control mechanism 20. The sensor 21 can detect the moving direction of the nozzle 2. Therefore, any sensor that can detect the moving direction of the sensor 21 itself, such as an acceleration sensor, is used as the sensor 21. The sensor 21 is attached to an arbitrary part such as the rod-shaped member 8 that moves together with the nozzle 2. Note that the sensor 21 may be attached to the rotating body 6 or the rotating shaft 6A as long as it is a part that moves periodically with the nozzle 2.

  On the other hand, the weight control mechanism 20 is a device that moves the weight 12 in a direction in which vibration is canceled according to the movement direction of the nozzle 2 detected by the sensor 21. Therefore, the output destination of the sensor 21 is connected to the weight control mechanism 20. The weight control mechanism 20 can be a pendulum device with the weight 12 attached to the tip. The weight control mechanism 20 detects the movement direction of the nozzle 2 and a change in the movement direction based on the detection signal acquired from the sensor 21, and puts the weight 12 in the nozzle 2 at a cycle equivalent to the cycle of the reciprocating movement of the nozzle 2. The function to move in the same direction is provided.

  The appropriate maximum rotation angle and moving period of the weight 12 can be determined in advance theoretically or experimentally because the moving range and moving period of the nozzle 2 are known. Accordingly, it is possible to control the weight 12 by determining an appropriate maximum rotation angle and moving period of the weight 12 in advance. However, the weight control mechanism 20 may acquire relative position information and speed information of the sensor 21 such as an acceleration sensor, and autonomously control the rotation angle and the movement cycle of the weight 12. In that case, it is possible to omit an operation of determining an appropriate maximum rotation angle and moving period of the weight 12.

  5 illustrates the blast processing apparatus 1A provided with the single weight 12 and the weight control mechanism 20, but a plurality of weights 12 and the weight control mechanism 20 may be provided in the blast processing apparatus 1A. Good. Further, the sensor 21 may be built in the weight control mechanism 20.

  According to the blast processing apparatus 1 </ b> A in the second embodiment as described above, the vibration caused by the reciprocating movement of the nozzle 2 can be canceled by the control of the independent weight 12. For this reason, according to the blast processing apparatus 1A in the second embodiment, the same effects as those of the blast processing apparatus 1 in the first embodiment can be obtained.

(Other embodiments)
Although specific embodiments have been described above, the described embodiments are merely examples, and do not limit the scope of the invention. The novel methods and apparatus described herein can be implemented in a variety of other ways. Various omissions, substitutions, and changes can be made in the method and apparatus described herein without departing from the spirit of the invention. The appended claims and their equivalents include such various forms and modifications as are encompassed by the scope and spirit of the invention.

DESCRIPTION OF SYMBOLS 1, 1A Blast processing apparatus 2 Nozzle 3 Moving mechanism 4 Dust-proof body 4A Confirmation window 4B Air gap 5 Motor 5A Output shaft 6 Rotating body 6A Rotating shaft 7 Power transmission mechanism 8 Rod member 9 Rotating plate 10 Connecting rod 11 Lever 12 Weight 20 Weight control Mechanism 21 Sensor B Blasting material

Claims (11)

A nozzle for injecting blast material;
A moving mechanism for reciprocating the nozzle along a track,
A weight that cancels vibrations caused by the reciprocating movement of the nozzle;
A blasting apparatus comprising: The moving mechanism has a rotating body that repeats normal rotation and reverse rotation with a rotating shaft as a fulcrum, and one end side of the fulcrum is connected to the nozzle,
The blast processing apparatus according to claim 1, wherein the weight is provided on the other end side of the fulcrum of the rotating body.   3. The blast processing apparatus according to claim 2, wherein the weight and the position of the weight are determined such that a rotational moment due to gravity on the nozzle side around the fulcrum is equal to or less than a rotational moment due to gravity on the weight side around the fulcrum.   3. The blast processing apparatus according to claim 2, wherein the weight and the position of the weight are determined so that a rotational moment due to gravity around the fulcrum becomes zero. The moving mechanism is
A motor having an output shaft at a position that is not collinear with the rotational shaft;
A power transmission mechanism that connects the output shaft and the rotating shaft, and transmits rotational power in one direction of the output shaft to the rotating shaft as power for repeating normal rotation and reverse rotation of the rotating shaft;
The blast processing apparatus according to claim 2, further comprising: A dustproof body for preventing scattering of the blast material by covering at least the nozzle;
The blast processing apparatus according to claim 5, wherein at least the motor and the power transmission mechanism are disposed outside the dustproof body. The power transmission mechanism is
A rotating plate fixed to the output shaft of the motor;
A connecting rod rotatably connected to a portion other than the rotation center of the rotating body and the rotating plate;
The blast processing apparatus according to claim 5, wherein the weight of the rotating plate on the side opposite to the connecting position of the connecting rod with respect to the rotation center is adjusted to a weight that suppresses vibration caused by the rotation of the rotating plate. A plurality of the nozzles;
The moving mechanism is
A rod-shaped member arranged so that a longitudinal direction thereof is a horizontal direction for fixing the plurality of nozzles;
Each of the rotating shafts corresponding to the respective fulcrum is rotated forward and reverse, and one end side of each fulcrum has a plurality of rotating bodies connected to the rod-shaped member,
The blast processing apparatus according to claim 1, wherein the weight is provided on the other end side of the fulcrums of the plurality of rotating bodies.   The blast processing apparatus according to claim 8, wherein the moving mechanism is configured such that the height of the rod-shaped member is maximized when the height of the weight is minimum. A sensor for detecting a moving direction of the nozzle;
A weight control mechanism for moving the weight in a direction in which the vibration is canceled according to the moving direction of the nozzle;
The blast processing apparatus according to claim 1, further comprising: Spraying blast material from a nozzle;
Producing a blasted product by reciprocating the nozzle along a track; and
Canceling the vibration caused by the reciprocating movement of the nozzle using a weight;
When,
A blasting method comprising:

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