WO2013121974A1 - Appareil de grenaillage - Google Patents

Appareil de grenaillage Download PDF

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Publication number
WO2013121974A1
WO2013121974A1 PCT/JP2013/052879 JP2013052879W WO2013121974A1 WO 2013121974 A1 WO2013121974 A1 WO 2013121974A1 JP 2013052879 W JP2013052879 W JP 2013052879W WO 2013121974 A1 WO2013121974 A1 WO 2013121974A1
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WO
WIPO (PCT)
Prior art keywords
chamber
workpiece
coil spring
shot
supply port
Prior art date
Application number
PCT/JP2013/052879
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English (en)
Japanese (ja)
Inventor
雄一 平田
康夫 楯岡
Original Assignee
中央発條株式会社
株式会社ニッチュー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中央発條株式会社, 株式会社ニッチュー filed Critical 中央発條株式会社
Priority to CN201380009113.1A priority Critical patent/CN104114326A/zh
Publication of WO2013121974A1 publication Critical patent/WO2013121974A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/08—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces
    • B24C3/10—Abrasive blasting machines or devices; Plants essentially adapted for abrasive blasting of travelling stock or travelling workpieces for treating external surfaces
    • B24C3/14—Apparatus using impellers

Definitions

  • the technology disclosed in this specification relates to a shot peening apparatus.
  • a shot peening process may be performed on the surface of the workpiece.
  • Japanese Patent Publication No. 2007-196338 discloses an example of a conventional shot peening apparatus.
  • a supply port is formed above the transfer device and a workpiece is supplied from the supply port onto the transfer device.
  • the supply port is not provided on the workpiece conveyance path, scattering of shot grains from the supply port to the outside of the housing can be suppressed.
  • the workpiece is dropped onto the transfer device from above, wrinkles may be formed on the workpiece surface. If wrinkles are formed on the surface of the work, the work may be damaged early due to the wrinkles.
  • a part of the conveying device may be disposed outside the housing, and the workpiece may be supplied onto the conveying device outside the housing.
  • the work can be placed softly on the transfer device, so that it is possible to suppress wrinkles on the surface of the work.
  • the supply port is provided on the workpiece conveyance path, there arises a problem that shot grains are scattered from the supply port to the outside of the housing.
  • This specification discloses a shot peening apparatus capable of supplying a work to a transfer apparatus softly while preventing scattering of shot grains.
  • the shot peening apparatus disclosed in this specification performs shot peening on a workpiece.
  • the shot peening apparatus includes a housing, a transport device, a projection device, and a workpiece placement device.
  • the housing has a supply port to which a workpiece is supplied, a projection chamber in which shot particles are projected onto the workpiece, and a discharge port from which the workpiece on which shot particles are projected is discharged.
  • the conveyance device conveys the workpiece supplied to the supply port to the discharge port through the projection chamber.
  • the projection device projects shot particles onto a coil spring that is transported in the projection chamber by the transport device.
  • the workpiece placement device is disposed below the supply port and above the transfer device, and places the workpiece supplied to the supply port on the transfer device.
  • the workpiece placement device includes a first rotating member having a first abutting member that abuts against the workpiece, and a second member that is disposed at a side of the first rotating member and is spaced apart from the first rotating member. And a second rotating member that rotates in synchronization with the first rotating member.
  • the work held by the first contact member and the second contact member by rotating the first rotation member and the second rotation member in a state where the work is held by the first contact member and the second contact member. Is placed on the transfer device.
  • a workpiece placement device is disposed above the transfer device, and a supply port is disposed above the workpiece placement device. Since the supply port is not provided on the workpiece conveyance path, it is possible to prevent the shot grains from being scattered from the supply port.
  • the workpiece supplied to the supply port is held by the first contact member and the second contact member, and is placed on the transport device by the rotation of the first rotation member and the second rotation member. Therefore, the workpiece can be placed on the transfer device in software. In this shot peening apparatus, it is possible to place the work on the conveying apparatus in a software manner while preventing the scattering of shot grains.
  • the figure which shows the structure of a conveying apparatus typically.
  • work mounting apparatus typically.
  • work mounting apparatus (the 1).
  • work mounting apparatus the 3).
  • work mounting apparatus the 5).
  • the above-described workpiece placement device may be arranged outside the region where the shot particles are projected by the projection device. According to such a structure, it is suppressed that a shot grain hits a workpiece
  • the workpiece mounting device is disposed above the first rotating member and the second rotating member, and supplies the workpiece supplied to the supply port between the first contact portion and the second contact portion. It may further have a mechanism.
  • the supply mechanism may have a shield structure that shields shot grains. According to such a structure, it can suppress more that a shot grain disperses from a supply port.
  • the supply mechanism described above may have a casing and a conveying rotator.
  • the casing is provided between the first chamber and the second chamber, the first chamber communicating with the supply port, the second chamber opening in the space above the first contact portion and the second contact portion, and the third chamber.
  • You may have a chamber and a 4th chamber.
  • the conveying rotating body may rotate in the casing in the order of the first chamber, the third chamber, the second chamber, and the fourth chamber, and convey the workpiece in the casing.
  • work supplied to the 1st chamber is conveyed to a 2nd chamber through a 3rd chamber with rotation of the rotary body for conveyance, and a 1st contact part and a 2nd contact part are conveyed from a 2nd chamber. It may be supplied in between.
  • the workpiece can be moved from the supply port to the transfer device while preventing the shot particles from being scattered from the supply port.
  • the third chamber of the casing may be provided with a work position adjusting means for adjusting the front / rear position of the work in the third chamber. According to such a configuration, the workpiece adjusted to an appropriate position can be supplied between the first contact portion and the second contact portion.
  • the shot peening apparatus 10 is an apparatus for performing shot peening on the surface of a suspension coil spring W used in an automobile or the like.
  • the shot peening apparatus 10 includes a housing 12, a work placement device 40 accommodated in the housing 12, a transport device 20, and projection devices 70 a and 70 b.
  • the workpiece placement device 40 places the coil spring W to be put into the shot peening device 10 on the transfer device 20.
  • the conveyance device 20 conveys the coil spring W placed by the workpiece placement device 40 from the supply port side to the discharge port side.
  • the projecting devices 70 a and 70 b project shot grains onto the coil spring W that is transported by the transport device 20.
  • each part of the shot peening apparatus 10 will be described in detail.
  • the housing 12 is a housing for housing each part 40, 20, 70 a, 70 b of the shot peening apparatus 10, and is formed of a plurality of steel plates. Inside the housing 12, a supply chamber 14 to which the coil spring W is supplied, a projection chamber 16 in which shot grains are projected onto the coil spring W, and a discharge chamber 18 that discharges the coil spring W are formed.
  • the transfer device 20 is disposed across the supply chamber 14, the projection chamber 16, and the discharge chamber 18, and transfers the coil spring W from the supply chamber 14 through the projection chamber 16 to the discharge chamber 18.
  • the supply chamber 14 is provided at one end of the housing 12 (the right end in FIG. 1).
  • a workpiece placement device 40 is disposed above the supply chamber 14 (above one end of the transfer device 20).
  • a supply port 58 formed in the housing 12 is disposed above the workpiece placement device 40 (see FIG. 7).
  • a coil spring W is fed into the supply port 58 by a feeding device (not shown) such as an articulated robot.
  • the projection chamber 16 is disposed between the supply chamber 14 and the discharge chamber 18.
  • Projection devices 70a and 70b are disposed above the projection chamber 16 (above the transfer device 20). Accordingly, shot grains are projected on the surface of the coil spring W in the projection chamber 16.
  • a shot grain reservoir 76 is disposed below the projection chamber 16 (below the transfer device 20).
  • the shot grain storage unit 76 is a dish-shaped member that is open at the top, and stores shot grains therein. For this reason, some of the shot grains projected from the projection devices 70 a and 70 b collide with the shot grains stored in the shot grain storage unit 76. Thereby, scattering of shot grains is suppressed and wear of each part of shot peening apparatus 10 due to shot grains is prevented.
  • the discharge chamber 18 is provided at the other end of the housing 12 (left end in FIG. 1).
  • a discharge port 80 is provided above the discharge chamber 18 (above the other end of the transfer device 20).
  • the discharge port 80 exposes the upper surface of the transfer device 20 (that is, the transfer surface that transfers the coil spring W), and the coil spring W onto which shot particles are projected is discharged from the discharge port 80.
  • an articulated robot or the like can be used for discharging the coil spring W.
  • a shielding plate 78 is provided between the discharge chamber 18 and the projection chamber 16. The shielding plate 78 prevents the shot particles from scattering toward the discharge chamber 18 and, as a result, prevents the shot particles from scattering from the discharge port 80 to the outside. Note that a plurality of shielding plates 78 may be provided from the viewpoint of further suppressing scattering of shot grains.
  • the housing 12 is provided with an adjustment door 82.
  • the adjustment door 82 is a door for adjusting the conveyance pitch of the coil spring W. That is, by opening the adjustment door 82, the operator can easily adjust the conveyance pitch of the coil spring W.
  • a conveyance pitch means the distance from one end of an adjacent coil spring to one end, when the coil spring W is continuously conveyed by the conveyance device 20.
  • the transfer device 20 includes a transfer spinner (22a, 22b) on which the coil spring W is mounted, and a coil spring W mounted on the transfer spinner (22a, 22b).
  • a feed mechanism 27 for moving from 14 to the discharge chamber 18 is provided.
  • the transport spinner (22a, 22b) has a pair of cylindrical members 24a, 24b and motors 26a, 26b that rotationally drive the cylindrical members 24a, 24b.
  • the cylindrical members 24a and 24b are inclined so that the end on the discharge chamber 18 side is higher than the end on the supply chamber 14 side. That is, the cylindrical members 24a and 24b are inclined at an angle ⁇ with respect to the horizontal direction.
  • the inclination angle ⁇ of the cylindrical members 24a and 24b is adjusted between 3 and 13 °.
  • the gap between the cylindrical members 24a and 24b is made smaller than the diameter of the coil spring W to be conveyed.
  • the coil spring W is disposed between the cylindrical members 24a and 24b so that the axis thereof is substantially parallel to the axis of the cylindrical members 24a and 24b (see FIG. 4). That is, the coil spring W is placed horizontally between the cylindrical members 24a and 24b.
  • the coil spring W placed on the cylindrical members 24a and 24b rotates around its axis. Thereby, shot grains can be projected on the entire surface of the wire of the coil spring W.
  • the feed mechanism 27 includes first gears 28a and 28b disposed on the supply chamber 14 side, second gears 30a and 30b disposed on the discharge chamber 18 side, first gears 28a and 28b, and second gears 30a and 30b.
  • Chain 32a, 32b spanned between the two.
  • the first gear 28a and the first gear 28b are arranged at an interval in the axial direction thereof.
  • the first gear 28a and the first gear 28b are connected by a shaft (not shown). For this reason, when the first gear 28a rotates, the first gear 28b also rotates.
  • the second gear 30a and the second gear 30b are also arranged at an interval in the axial direction, and are connected by a shaft (not shown).
  • the shaft connecting the second gears 30 a and 30 b is driven by the motor 33.
  • the chains (32a and 32b) rotate counterclockwise (in the direction of the arrow indicated by the one-dot chain line in FIG. 2), and thereby the first gears. 28a and 28b also rotate. That is, the first gears 28a and 28b are driven gears, and the second gears 30a and 30b are drive gears.
  • the chain 32a is spanned between the first gear 28a and the second gear 30a
  • the chain 32b is spanned between the first gear 28b and the second gear 30b.
  • the connecting member 34 includes a horizontal plate portion 35 having one end detachably attached to the chain 32a and the other end detachably attached to the chain 32b, and a vertical plate portion 36 projecting from the center of the horizontal plate portion 35.
  • the horizontal plate portion 35 has inclined portions 35a and 35b extending downward from the chains 32a and 32b. Since the horizontal plate portion 35 has the inclined portions 35a and 35b, the transfer device while forming a sufficient space between the horizontal plate portion 35 and the transfer spinners 22a and 22b (specifically, the cylindrical members 24a and 24b). Twenty spaces are saved. As shown in FIGS. 5 and 6, the horizontal plate portion 35 is detachably attached to attachment holes 33a and 33b formed in the chains 32a and 32b by bolts (not shown). As apparent from FIGS. 5 and 6, the interval between the adjacent connecting members 34 can be adjusted by changing the interval at which the connecting members 34 are attached to the chains 32 a and 32 b.
  • the attachment holes 33a and 33b are formed in the chains 32a and 32b at a predetermined pitch p.
  • the connecting members 34 are attached to all the attaching holes 33a and 33b, the interval between the adjacent connecting members 34 becomes the pitch p (the state shown in FIG. 5).
  • the interval between the adjacent connecting members 34 becomes a pitch of 2 ⁇ p (the state shown in FIG. 6).
  • the distance between the connecting members 34 can be adjusted by selecting the positions of the mounting holes 33a and 33b to which the connecting members 34 are attached. The operation of adjusting the distance between the connecting members 34 can be performed using an adjustment door 82 provided on the housing 12.
  • the vertical plate portion 36 extends upward from the center of the horizontal plate portion 35.
  • the vertical plate portion 36 protrudes upward from between the pair of transport spinners 22a and 22b (cylindrical members 24a and 24b).
  • the vertical plate portion 36 comes into contact with one end (rear end in the conveying direction of the coil spring W) of the coil spring W placed between the cylindrical members 24a and 24b.
  • the coil spring W is placed horizontally between the cylindrical members 24a and 24b of the transport spinners 22a and 22b. Then, the vertical plate portion 36 of the connecting member 34 comes into contact with the rear end of the horizontally placed coil spring W. For this reason, when the chains 32 a and 32 b are rotated by the motor 33, the connecting member 34 connected to the chains 32 a and 32 b moves laterally, and the coil spring W that contacts the vertical plate portion 36 of the connecting member 34 is removed from the supply chamber 14. It is conveyed through the projection chamber 16 to the discharge chamber 18. At this time, when the cylindrical members 24a and 24b rotate, the coil spring W also rotates around its axis. Therefore, the coil spring W is conveyed from the supply chamber 14 to the discharge chamber 18 while rotating around the axis.
  • a plurality of connecting members 34 are attached to the chains 32a and 32b. Since one coil spring W can be transported by one connecting member 34, the transport device 20 can transport a plurality of coil springs W at intervals in the transport direction. In addition, since the distance between the connecting members 34 attached to the chains 32a and 32b can be adjusted, the distance between the ends of the coil spring W that contacts the vertical plate portion 36 of the connecting member 34 (that is, the conveyance of the coil spring W). The pitch can also be changed. Therefore, the shot peening apparatus 10 according to the present embodiment can efficiently perform the shot peening process on the coil springs W having a plurality of types of sizes.
  • the conveyance pitch of the coil spring W can be adjusted according to the pitch p of the mounting holes 33a and 33b formed in the chains 32a and 32b. That is, the conveyance pitch of the coil spring W can be adjusted to 1 ⁇ p, 2 ⁇ p, 3 ⁇ p,. Therefore, it is preferable to appropriately set the pitch p of the mounting holes 33a and 33b according to the size of the coil spring W processed by the shot peening apparatus 10.
  • the pitch of the mounting holes 33a and 33b can be set within a range of 60 to 150 mm.
  • the conveyance pitch of the coil spring W can be set to 6 ⁇ p (450 mm), 8 ⁇ p (600 mm), and 10 ⁇ p (750 mm). it can.
  • the conveying pitch of the coil spring W can be set to 3 ⁇ p (450 mm), 4 ⁇ p (600 mm), and 5 ⁇ p (750 mm). it can.
  • the conveyance pitch may be set as shown in Table 1 below in consideration of the chain pitch p defined by Japanese Industrial Standards (JIS).
  • the number of mounting holes 33a and 33b formed in the chains 32a and 32b is divisible within a range in which the conveying pitch of the coil spring W is adjusted.
  • the number of the mounting holes 33a and 33b is preferably a common multiple of 3, 4, and 5. Therefore, the number of mounting holes 33a, 33b can be set to 60, 120, 180,. By setting in this way, the coil spring W can be conveyed without forming a useless space.
  • the interval between adjacent coil springs W is preferably about 75 mm to 150 mm. By leaving a certain interval between adjacent coil springs W, shot grains can be projected onto the entire surface of the coil springs W without leakage.
  • the projection devices 70 a and 70b include rotors 72 a and 72 b and impellers 74 a and 74 b formed on the outer peripheral surfaces of the rotors 72 a and 72 b.
  • the rotors 72 a and 72 b are arranged so that the rotation axis thereof is orthogonal to the conveying direction of the coil spring W.
  • the rotors 72a and 72b are rotationally driven by a motor (not shown).
  • the rotor 72a is rotationally driven clockwise, and the rotor 72b is rotationally driven counterclockwise.
  • the impellers 74a and 74b are composed of a plurality of blades extending in the radial direction from the outer peripheral surfaces of the rotors 72a and 72b.
  • the plurality of blades of the impellers 74a and 74b are arranged on the outer peripheral surfaces of the rotors 72a and 72b at equal intervals in the circumferential direction. In this embodiment, eight blades are formed at an interval of 45 ° in the circumferential direction.
  • Projection devices 70a and 70b are connected to a hopper 84 that stores shot grains.
  • the hopper 84 is disposed above the projection devices 70a and 70b. Shot particles recovered from the inside of the housing 12 (for example, shot particles overflowed from the shot particle storage unit 76) are put into the hopper 84.
  • the shot grains stored in the hopper 84 are supplied between the blades of the impellers 74a and 74b. When the rotors 72a and 72b rotate, the shot particles supplied between the blades of the impellers 74a and 74b are projected onto the coil spring W by the centrifugal force.
  • the projection areas A and B of the shot grains projected from the projection devices 70a and 70b are in the conveyance direction of the coil spring W. It becomes an elongated shape. Further, since the rotor 72a rotates clockwise, the projection device 70a projects shot grains toward the conveying direction of the coil spring W. Therefore, the shot grains projected from the projection device 70a collide with the inner and outer peripheral surfaces of the wire of the coil spring W and the rear surface with respect to the conveying direction.
  • the projection device 70b projects shot grains toward the counter-conveying direction (the opposite side of the conveying direction) of the coil spring W. Therefore, the shot grains projected from the projection device 70b collide with the inner and outer peripheral surfaces of the wire of the coil spring W and the front surface in the transport direction.
  • the workpiece placement device 40 As shown in FIGS. 7 to 13, the workpiece mounting device 40 is provided below the supply port 58 formed in the housing 12 and in the transfer spinners 22a and 22b (specifically, the cylindrical members 24a of the transfer spinners 22a and 22b). 24b).
  • the workpiece placement device 40 includes a workpiece supply mechanism 42 disposed on the supply port 58 side and a workpiece lowering mechanism (64a, 64b) disposed on the transport spinners 22a, 22b (cylindrical members 24a, 24b) side. .
  • the workpiece supply mechanism 42 includes an upper casing 62, a rotating drum 54 that rotates in the upper casing 62, and four partition plates 56 formed on the outer peripheral surface of the rotating drum 54.
  • the upper casing 62 has an upper surface connected to the supply port 58 and a lowering port 52 formed on the lower surface.
  • the upper casing 62 is divided into four rooms 44, 46, 48 and 50. Specifically, the room 44 is disposed on the upper portion of the upper casing 62 and communicates with the supply port 58.
  • the room 48 is disposed at the lower part of the upper casing 62 and communicates with the drop opening 52. That is, the room 48 is open to the space above the workpiece lowering mechanism (64a, 64b).
  • the rooms 46 and 50 are arranged on the side of the upper casing 62.
  • the drop port 52 and the supply port 58 are separated by the partition plate 56. That is, the supply port 58 and the drop port 52 are shielded by the partition plate 56 formed on the rotary drum 54.
  • the shot grains in the housing 12 are prevented from splashing out of the housing 12 through the drop port 52 and the supply port 58.
  • a position adjusting actuator 60 for adjusting the position of the coil spring W is arranged.
  • the position adjustment actuator 60 for example, a piston driven by using fluid pressure (hydraulic pressure, pneumatic pressure, etc.) can be used. In this case, by driving the piston, the coil spring W that contacts the piston is positioned at a predetermined position.
  • the rotating drum 54 is driven to rotate in the direction of arrow C (clockwise in FIG. 7 and the like) by a motor (not shown).
  • the four partition plates 56 also rotate.
  • the coil spring W loaded into the chamber 44 is first moved to the chamber 48 through the chamber 46 by the rotation of the rotating drum 54, and the workpiece lowering mechanism ( 64a, 64b).
  • the partition plate 56 returns to the room 44 through the room 50 as the rotary drum 54 rotates.
  • the four partition plates 56 are formed on the outer peripheral surface of the rotating drum 54 with an interval (90 °) therebetween in the circumferential direction.
  • the partition plate 56 extends from the outer peripheral surface of the rotating drum 54 to the inner peripheral surface of the upper casing 62.
  • the partition plate 56 is formed with a recess for making it easier to hold the coil spring W (see FIG. 7).
  • the workpiece lowering mechanism (64a, 64b) has a first rotating member 64a and a second rotating member 64b.
  • the 1st rotation member 64a and the 2nd rotation member 64b are arrange
  • the sides of the first rotating member 64 a and the second rotating member 64 b are covered with a lower casing 65. This suppresses the shot particles from colliding with the rotating member 64.
  • Each of the first rotating member 64a and the second rotating member 64b includes rotating shafts 66a and 66b and two arms 68a and 68b attached to the rotating shafts 66a and 66b.
  • the rotary shafts 66a and 66b are rotationally driven by a motor (not shown).
  • the rotating shaft 66a rotates counterclockwise, and the rotating shaft 66b rotates clockwise (see FIGS. 12 and 13).
  • the rotations of the rotary shafts 66a and 66b are synchronized.
  • the arms 68a and 68b are arranged around the rotary shafts 66a and 66b with an equal interval in the circumferential direction. Since the arms 68a and 68b are attached to the rotary shafts 66a and 66b, when the rotary shafts 66a and 66b rotate, the arms 68a and 68b also rotate.
  • the coil spring W is loaded into the chamber 44 of the upper casing 62 by a loading device (not shown).
  • the coil spring W put into the room 44 is held in the recess of the partition plate 56.
  • the rotary drum 54 and the partition plate 56 rotate, and the coil spring W held by the partition plate 56 moves to the chamber 46.
  • the position adjusting actuator 60 is operated, and the position of the coil spring W is adjusted.
  • the rotating drum 54 and the partition plate 56 further rotate, the coil spring W is dropped from the drop opening 52 of the upper casing 62.
  • the arms 68a and 68b of the workpiece lowering mechanism are arranged at a position (receiving position) where the coil spring W can be received. That is, one arm 68 a and one arm 68 b are inclined obliquely upward, and the gap formed therebetween is arranged at a position where the outer diameter of the coil spring W becomes smaller. Therefore, the coil spring W dropped from the workpiece supply mechanism 42 is gripped by the arms 68a and 68b as shown in FIG. When the coil spring W is gripped by the arms 68a and 68b, the arms 68a and 68b rotate in synchronization as shown in FIGS.
  • the coil spring W gripped by the arms 68a and 68b is placed on the cylindrical members 24a and 24b of the transport spinners 22a and 22b.
  • the coil spring W slowly approaches the transport spinners 22a and 22b (cylindrical members 24a and 24b) as the arms 68a and 68b rotate.
  • the coil spring W is softly placed on the cylindrical members 24a and 24b of the transport spinners 22a and 22b.
  • the coil spring W is placed at an appropriate position of the arms 68a and 68b.
  • the transport spinners 22a and 22b (cylindrical members 24a and 24b) A coil spring W is placed at an appropriate position.
  • work mounting apparatus 40 is provided in the upper surface of the housing 12, and is arrange
  • the coil spring W to be processed is input from the supply port 58 to the workpiece placement device 40.
  • the coil spring W loaded into the workpiece mounting device 40 is softly mounted on the transport spinners 22a and 22b by the workpiece mounting device 40.
  • the coil spring W placed on the transport spinners 22a and 22b is transported from the supply chamber 14 through the projection chamber 16 to the discharge chamber 18 by the feed mechanism 27 while rotating around its axis.
  • the shot peening process is performed on the entire surface of the wire of the coil spring W by the projection devices 70a and 70b.
  • the coil spring W conveyed to the discharge chamber 18 is discharged from the discharge port 80 to the outside of the housing 12.
  • the coil spring W is horizontally placed on the transport spinners 22a and 22b, and a plurality of coil springs are arranged on the transport spinners 22a and 22b.
  • the projection devices 70a and 70b project the shot particles so that the shot particles spread in the conveying direction of the coil spring W. Therefore, the shot grains projected from the projection devices 70a and 70b can easily hit one of the coil springs, and the shot grain projection efficiency can be increased.
  • the conveying apparatus 20 can change the space
  • the workpiece placement device 40 is disposed above the transport spinners 22a and 22b, and the supply port 58 and the inside of the housing 12 are shielded by the workpiece placement device 40. For this reason, scattering of shot grains from the supply port 58 of the housing 12 is suppressed.
  • the coil spring W supplied to the supply port 58 is gripped by the arms 68a and 68b of the workpiece mounting device 40, and is softly placed on the transport spinners 22a and 22b by the rotation of the arms 68a and 68b. Therefore, it is possible to suppress wrinkles from occurring on the surface of the coil spring W, and it is possible to suppress early breakage or the like of the coil spring W due to the wrinkles.
  • the transfer spinners 22a and 22b are inclined so that the end on the discharge chamber 18 side is higher than the end on the supply chamber 14 side. Therefore, a force directed to the opposite side of the transport direction (that is, the discharge chamber 18 side to the supply chamber 14 side) acts on the coil spring W placed on the transport spinners 22a and 22b by gravity. For this reason, even if shot particles are projected from the projection device 70a toward the conveyance direction, the coil spring W is prevented from being separated from the vertical plate portion 36, and a residual stress can be appropriately applied to the coil spring W. it can.
  • the maximum stress generation site may be not on the inner diameter side of the strand but on the upper and lower surfaces of the strand.
  • the coil spring W escapes as it is, Residual stress cannot be applied.
  • the escape of the coil spring W can be suppressed using the gravity acting on the coil spring W by inclining the transport spinners 22a and 22b. As a result, a relatively large residual stress can be applied to the entire surface of the wire of the coil spring W.
  • the inclination angle ⁇ of the transport spinners 22a and 22b is preferably 3 to 13 ° with respect to the horizontal direction. This is because if the angle of the conveying spinners 22a and 22b is less than 3 °, sufficient force for preventing the coil spring W from escaping cannot be obtained. Further, if the angle of the transport spinners 22a and 22b exceeds 13 °, the shot peening apparatus 10 is increased in size in the height direction.
  • the arm 68a and the first rotating member 64a are examples of the “first contact member” and the “first rotating member”.
  • the arm 68b and the second rotating member 64b are examples of “second abutting member” and “second rotating member”.
  • the workpiece supply mechanism 42 is an example of a “supply mechanism”.
  • the rooms 44, 48, 46, and 50 are examples of “first room”, “second room”, “third room”, and “fourth room”, respectively.
  • the position adjusting actuator 60 is an example of “work position adjusting means”.
  • the shot peening apparatus 10 of the present embodiment can also be used for shot peening of other machine parts.
  • the transport spinners 22a and 22b can be positioned above the projection chamber 16 at the position of the discharge port 80. According to such a configuration, the coil spring can be easily carried out of the housing from the discharge port.
  • the two arms 68a and 68b of the workpiece lowering mechanism are rotated to move the coil spring W dropped from the workpiece supply mechanism 42 onto the transport spinners 22a and 22b.
  • the coil spring W may be placed on the transport spinners 22a and 22b by rotating one arm (repetitively rotating within a predetermined angle range).
  • the number of the arms may be three, and the coil springs W may be placed on the transport spinners 22a and 22b by rotating these three arms.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Automatic Assembly (AREA)

Abstract

On décrit un appareil de grenaillage qui comprend un dispositif de placement de pièce à travailler (40), qui est disposé au-dessous d'un orifice d'alimentation (58) et au-dessus de dispositifs de transport (24a, 24b), et place sur les dispositifs de transport une pièce à travailler (W) introduite dans l'orifice d'alimentation. Le dispositif de placement de pièce à travailler (40) comprend: un premier élément rotatif (64a) présentant des premier éléments de contact (68a) venant au contact de la pièce à travailler; et un second élément rotatif (64b) disposé sur le côté du premier élément rotatif avec un espace entre eux, ce second élément rotatif présentant des seconds éléments (68b) qui viennent au contact de la pièce à travailler, et tournant en synchronisation avec le premier élément rotatif. Dans un état où la pièce à travailler (W) est retenue par les premiers éléments de contact (68a) et les seconds éléments de contact (68b) en action de rotation, la pièce à travailler (W) est placée sur les dispositifs de transport.
PCT/JP2013/052879 2012-02-17 2013-02-07 Appareil de grenaillage WO2013121974A1 (fr)

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CN201380009113.1A CN104114326A (zh) 2012-02-17 2013-02-07 喷丸装置

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JP2012032962A JP5827579B2 (ja) 2012-02-17 2012-02-17 ショットピーニング装置
JP2012-032962 2012-02-17

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WO2013121974A1 true WO2013121974A1 (fr) 2013-08-22

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JP (1) JP5827579B2 (fr)
CN (1) CN104114326A (fr)
TW (1) TW201400241A (fr)
WO (1) WO2013121974A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP6196515B2 (ja) * 2013-09-24 2017-09-13 昭和電工ガスプロダクツ株式会社 ショットブラスト装置用処理物取り出し具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS522491U (fr) * 1975-06-24 1977-01-08
JPS5822254U (ja) * 1981-08-06 1983-02-10 新東工業株式会社 コイルばね用シヨツトピ−ニングマシン
JPH024756U (fr) * 1988-06-21 1990-01-12

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS522491U (fr) * 1975-06-24 1977-01-08
JPS5822254U (ja) * 1981-08-06 1983-02-10 新東工業株式会社 コイルばね用シヨツトピ−ニングマシン
JPH024756U (fr) * 1988-06-21 1990-01-12

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TW201400241A (zh) 2014-01-01
JP2013169603A (ja) 2013-09-02
CN104114326A (zh) 2014-10-22

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