JP5202411B2 - Oscillator - Google Patents

Description

  The present invention relates to a swing device that generates a swing in a horizontal direction.

  Shot peening is known as means for improving the mechanical properties of castings (see, for example, Patent Document 1). Shot peening is a cold work performed as a post process for castings, and the surface layer of castings is plastically deformed by projecting fine grains at high speed, generating compressive residual stress and improving mechanical strength. It is a technology to obtain.

  However, this shot peening process is limited to the surface layer that is very close to the surface of the casting, so it does not have the effect of crushing internal defects that may exist near the surface of the casting, improving the mechanical properties of the casting. In addition to having a limit in achieving this, there was a risk of inducing deterioration of the properties of the surface layer of the casting.

  Therefore, the present applicant has proposed a casting hardening method as a new means to replace the shot peening process (see Patent Document 2). This is a means for forming a dense layer thicker than the plastic deformation layer by shot peening on the surface side of the casting. According to the casting curing method disclosed in Patent Document 2, desired mechanical properties are imparted to the casting. It is possible to grant.

  The casting curing method is means for forming a dense layer by swinging the casting together with the hardening material and causing the hardening material to collide with the surface of the casting. Is required. The swing device is disclosed in Patent Document 2, and the applicant has made new proposals in Patent Document 3 and Patent Document 4. Further, as prior art documents related to rocking, Patent Document 5 which is a barrel polishing technique by the present applicant, Patent Documents 6 and 7 which introduce a technique for removing core sand, and a reciprocating piston mechanism by a cam. The disclosed Patent Document 8 is known.

Japanese Patent Publication No. 8-11366 JP 2004-322112 A JP 2004-174604 A JP 2005-103698 A Japanese Patent Laid-Open No. 4-289069 JP-A-10-286665 JP-A-61-9961 Japanese Patent Publication No. 6-27537

  The swinging device proposed in Patent Document 3 is suitable for performing a casting hardening method by generating horizontal swinging. However, in order to increase the processing efficiency, if the speed of the swing is increased (when the speed is increased), even if the two swing plates are in the (horizontal) opposing motion, the bad vibration becomes excessive, and the sliding guide mechanism (LM) There was a problem to be improved that the life of the guide) was shortened.

  The present invention has been made in view of such circumstances, and the object of the present invention is to allow the casting to be swung at a high speed together with the hardened material, and by virtue of the swinging, it is superior to a predetermined part of the casting. Another object of the present invention is to provide a rocking device that can be provided with mechanical properties and that has a long life of components. As a result of repeated research, it has been found that the above-mentioned object can be achieved by the following means.

  That is, according to the present invention, a rotary prime mover, a cam mechanism that converts the rotational motion generated by the rotary prime mover into two horizontally opposed linear motions, and a horizontally opposed lateral motion that is symmetrically disposed and converted by the cam mechanism. 2 or more oscillating plates that oscillate by two linear motions, and two or more linear guide mechanisms that oscillate the oscillating plates smoothly, and the cam mechanism is connected to the rotary prime mover. A shaft (camshaft), a conjugate cam (conjugate cam) provided on the rotating shaft, and each provided between the conjugate cam and each conjugate cam (strictly, each cam constituting the conjugate cam) A pair of rollers (cam follower) in contact with each other, a pair of bridge bars that rotatably support the pair of rollers, and a pair of bridge bars that are fixed to both ends of the pair and that connect two or more swing plates A pair of rocking rods (push-pull rod), the rocking device with is provided.

  In this specification, the swing does not mean a swinging motion on a rotating track, but means a linear reciprocating motion (on a straight track) in a substantially horizontal direction. The swing is not limited, but is a fast periodic motion with a large swing width (amplitude) and a small swing number (frequency). In addition, since the oscillation is a concept that overlaps with the vibration, in this specification, the secondary vibration to be suppressed, which is caused by the oscillation, not the oscillation itself may be expressed as bad vibration.

  A rotary prime mover is a device that first generates rotational motion. An electric motor is adopted as a preferred rotary prime mover, but the rotary prime mover is not limited to an electric motor and may be an internal combustion engine or the like. The horizontally opposed two linear motions are reciprocating motions with substantially the same amplitude and the same direction, but their periods are shifted from each other by a half cycle. When one moves in the forward direction, the other must be in the backward direction. It is a forward movement. The rocking plate is a stage on which a rocked body to be rocked is placed. The preferred rocking plate is a flat plate, but the shape and the like are not limited as long as the rocked body can be placed and fixed. When the oscillating body has a special shape, the oscillating body can be fixed to the oscillating plate via an attachment jig. As the linear guide mechanism (linear guide), a linear bearing, an infinite sliding ball spline bearing, an oilless bearing, or the like can be used. It is preferable to use what is generally called an LM guide.

  In the cam mechanism, the rotary prime mover is connected to a rotary shaft (camshaft). This is because the rotary shaft and the rotary prime mover are directly connected (direct drive) or via a predetermined conductive member. Means connected. The conductive member is, for example, a belt (belt drive) or a gear (gear drive). The conjugate cam (conjugate cam) is composed of two cams, and each of the two rollers (cam followers) is in contact with each cam. In a conjugate cam, the two cams act as if they are 180 degrees out of phase. That is, the conjugate cam moves so that when one cam is pushing the roller, the other cam is pushed by the roller. The bridge bar has two roles. One is to rotatably support the roller at the central portion, and the other is to hold a swing rod (push-pull rod) at both ends. Because of the latter role, it is expressed as a bridge. Since the swing bar is held by the same two bridge bars, it is positioned in parallel and swings. Then, the swing plate connected to the swinging swinging bar also swings.

  In the rocking device according to the present invention, the conjugate cam preferably has a two-piece or three-piece structure.

  Having a two-piece structure means that the two cams of the conjugate cam are composed of separate pieces that can be separated and function as a conjugate cam in a fixed state. Then, in addition to the two-piece structure, it means that a positioning (spacing) member (not a cam) is provided between the two cams of the conjugate cam.

  In the oscillating device according to the present invention, it is preferable that the conjugate cam is fixed to the rotating shaft by friction type fastening means.

  In the rocking device according to the present invention, it is preferable that a rotation detection sensor is provided in the vicinity of the rotation shaft of the cam mechanism.

  A rotary encoder can be used as the rotation detection sensor.

  In the oscillating device according to the present invention, it is preferable that the oscillating rod has a tapered surface at an end thereof, and the oscillating plate is connected by the tapered surface.

  A preferable surface as the tapered surface is a tapered surface that is formed over the entire circumference of the swinging rod and becomes thinner toward the end of the swinging rod.

  In the oscillating device according to the present invention, it is preferable that a pair of slide members forming a thin or tapered gap is arranged in parallel on the oscillating plate with the gap opposed. The direction in which the slide members are arranged in parallel is preferably a direction that is substantially perpendicular to the swinging direction. In this case, it is preferable that one or both of the pair of slide members is provided with a tightening means for pressing so as to crush the gap. Furthermore, it is preferable that a stop member that forms a thin flat or tapered gap is disposed at a position connecting the same end portions of a pair of slide members disposed in parallel. Still further, it is preferable to provide a proximity sensor in the vicinity of the stop member.

  The rocking device according to the present invention has a base on which a rotary prime mover, a cam mechanism, a rocking plate, and a linear guide mechanism are placed, and the base is formed of a plate-like body, and annealing treatment is performed. It is preferable that it has been applied.

  The phrase “formed by a plate-like body” means that the base has a panel structure formed of, for example, an iron plate or a steel plate. That is, the base of the rocking device according to the present invention is not formed of a rod-shaped material such as H steel.

  When the rocking device according to the present invention has a base, it is preferable to provide an air spring between the base and the floor on which the base is placed.

  When the rocking device according to the present invention has a base, it is preferable that the cam mechanism is accommodated in a box and the box is fixed to the base.

  When the rocking device according to the present invention has a base, it is preferable that the rocking bar of the cam mechanism is provided through the box, and the box also serves as a guide for the rocking bar.

  Specifically, a mode in which a bearing is provided in a portion through which the swinging rod passes through the box and the swinging rod is supported by the bearing can be exemplified.

  When the rocking device according to the present invention has a base, it is preferable that the box is filled with lubricating oil and provided with a circulating means for the lubricating oil.

  In the oscillating device according to the present invention, the oscillating body fixed and oscillating on the oscillating plate includes a workpiece in which a closed space exists, and a work material put into the closed space of the workpiece. It is preferable to have. And it is preferable that a to-be-processed body is a hollow casting, and it is especially preferable that it is a ventilation system component for vehicles.

  What is preferable as a processed material is a steel ball having a diameter of 3 to 30 mm. Ventilation parts for a vehicle that are preferable as a workpiece are, for example, an EGR (exhaust gas recirculation) passage, an intake manifold, a turbine housing, a compressor cover, a cylinder head, a cylinder, an air duct, and the like.

  The oscillating device according to the present invention includes a rotary prime mover, a cam mechanism that converts the rotational motion generated by the rotary prime mover into two horizontally opposed linear motions, and a horizontally opposed symmetrically disposed cam mechanism. The two or more oscillating plates that oscillate by the two linear motions and two or more linear guide mechanisms that smoothly oscillate the oscillating plates are provided. The workpiece can be processed by placing the workpiece and causing the workpiece to collide with the workpiece by swinging. For example, a steel ball can be used as a workpiece, and a casting hardening method (see Patent Document 2) can be carried out using a casting (for example, an EGR passage) as a workpiece, whereby a predetermined part of the casting is formed. On the other hand, excellent mechanical properties can be imparted and the competitiveness of the cast product can be improved.

  In the oscillating device according to the present invention, the cam mechanism has a conjugate cam and a roller (cam follower). With such a cam mechanism, the rotational motion generated by the rotary prime mover is converted into two horizontally opposed linear motions. Therefore, the occurrence of vibrations other than the swinging direction (horizontal direction) is suppressed, and when the swinging is performed at a high speed, the bad vibration that has been increased in the crank mechanism is small. Therefore, it is possible to lengthen the lifetime of the structural member including the linear guide mechanism.

  In the preferred embodiment of the swing device according to the present invention, the conjugate cam has a two-piece or three-piece structure, so it is less expensive than the one-piece one and can be easily replaced. Since the swing width of the swing varies depending on the shape of the cam, the swing width of the swing can be easily changed in the swing device according to the present invention.

  In the preferred embodiment of the oscillating device according to the present invention, the conjugate cam is fixed to the rotating shaft by friction-type fastening means, and there is no need to form a keyway for fixing the conjugate cam to the rotating shaft. For this reason, there is no risk of the strength of the rotating shaft being reduced, and problems such as wear and seizure of the rotating shaft due to vibration and impact are less likely to occur. A conjugate cam can be easily mounted at an arbitrary position on the rotating shaft, and position adjustment and phase adjustment can be easily performed.

  In the preferred embodiment, the oscillating device according to the present invention includes a rotation detection sensor in the vicinity of the rotation shaft of the cam mechanism, so that the rotation shaft and the rotary prime mover are connected via a predetermined conductive member. Even in the case of a malfunction, it is possible to immediately detect the malfunction of the swing device.

  In the preferred embodiment of the rocking device according to the present invention, the rocking bar has a tapered surface at its end, and the rocking plate is connected to the taper surface, so rocking (horizontal reciprocating motion). The impact that occurs when the direction is switched (reversed) can be received by the entire (tapered) surface. For this reason, the member of the connection portion has a long life. If the taper surface is such that the taper surface becomes thinner as it goes to the end of the swinging rod, an impact generated when switching from the return (return path) to the go (outward path) is received by the entire (taper) surface.

  In a preferred embodiment of the rocking device according to the present invention, a pair of slide members that form a thin or tapered gap are arranged on the rocking plate in parallel with the gap facing each other. In this gap, for example, a plate-like pedestal on which the rocking body is placed can be inserted, and the inserted plate-like pedestal can be removed. Therefore, it is not necessary to directly fix the oscillating body to the oscillating plate. For example, when performing a casting curing method (see Patent Document 2), the processing efficiency (production efficiency of the cured product) ) Can be increased. Further, in an aspect in which one or both of the pair of slide members are provided with fastening means for pressing so as to crush the gap, in a state where the plate-like pedestal on which the oscillating body is placed is inserted into the gap of the slide member, Since it can be simply and securely fixed, it is possible to prevent the plate-like pedestal on which the body to be oscillated is detached from the oscillating plate during oscillating without reducing the workability of insertion and removal. Furthermore, the aspect in which a stop member that forms a thin flat or tapered gap is provided at a position connecting the same end portions of a pair of slide members arranged in parallel further enhances these effects. . Still further, in the aspect in which the proximity sensor is provided in the vicinity of the stop member, whether or not the plate-like pedestal on which the oscillating body is placed is surely inserted into a predetermined position or during the oscillating body. It is possible to detect whether or not the plate-like pedestal on which is placed is swinging without detaching from the swinging plate.

  In the preferred embodiment of the swing device according to the present invention, since the base is formed of a plate-like body and is subjected to annealing treatment, the flatness of the base on which the linear guide mechanism is placed is high. Therefore, the linear guide mechanism can be surely disposed horizontally, and the swing plate on which the oscillating body is placed can be smoothly swung on the straight guide mechanism. When the base is formed of a rod-shaped material such as H steel, the linear guide mechanism cannot be disposed horizontally, and kinetic energy in a direction that does not coincide with the direction of linear motion converted by the conjugate cam is generated. Although the bad vibration becomes excessive and the life of the linear guide mechanism is shortened, such a problem does not occur according to the swing device according to the present invention. Further, according to the aspect in which the air spring is provided between the base and the floor, it is possible to suppress the bad vibration of the entire swinging device, and it is possible to extend the life of the constituent members including the linear guide mechanism. Furthermore, according to the aspect in which the box body that houses the cam mechanism is fixed to the base, it is possible to suppress the bad vibration caused by the operation of the cam mechanism, and to prolong the life of the components including the linear guide mechanism. I can do it. Still further, according to the aspect in which the box also serves as the guide for the swinging rod, it is possible to suppress the bad vibration caused by the reciprocating motion of the swinging rod and to prolong the life of the components including the linear guide mechanism. I can do it.

  In the preferred embodiment of the rocking device according to the present invention, the box body is filled with lubricating oil and provided with lubricating oil circulation means, so that generation of frictional heat is suppressed. Therefore, even if the swing speed is increased to increase the processing efficiency (even if the conjugate cam (or the rotating shaft) is rotated quickly), seizure does not occur.

It is a figure which shows one Embodiment of the rocking | fluctuation apparatus which concerns on this invention, and is a perspective view of the front side. It is a figure which shows one Embodiment of the rocking | fluctuation apparatus which concerns on this invention, and is a perspective view of the back side. It is a front view which shows one Embodiment of the rocking device which concerns on this invention. It is a top view which shows one Embodiment of the rocking device which concerns on this invention. It is a right view which shows one Embodiment of the rocking device which concerns on this invention. It is sectional drawing showing the AA cross section in FIG. 2B. It is sectional drawing showing the BB cross section in FIG. 2B. It is sectional drawing showing CC cross section in FIG. 2A. It is a figure which shows one Embodiment of the rocking | fluctuation apparatus which concerns on this invention, and is a perspective view showing a conjugate cam. It is a figure which shows one Embodiment of the rocking | fluctuation apparatus which concerns on this invention, and is a top view showing a conjugate cam. It is sectional drawing showing FF cross section in FIG. 4B. It is a figure which shows one Embodiment of the rocking | fluctuation apparatus which concerns on this invention, and is a perspective view showing a cam box. It is a figure which shows one Embodiment of the rocking | fluctuation apparatus which concerns on this invention, and is a perspective view showing a bridge bar. It is a figure which shows one Embodiment of the rocking device which concerns on this invention, and is a perspective view showing a push pull rod. It is sectional drawing showing DD section in FIG. 2B. It is sectional drawing showing the EE cross section in FIG. 2B. It is a figure which shows one Embodiment of the rocking | fluctuation apparatus which concerns on this invention, and is a schematic diagram showing a mode that rotational motion was converted into reciprocating motion by the conjugate cam. It is a figure which shows one Embodiment of the rocking | fluctuation apparatus which concerns on this invention, and is a schematic diagram showing a mode that rotational motion was converted into reciprocating motion by the conjugate cam. It is a figure which shows one Embodiment of the rocking | fluctuation apparatus which concerns on this invention, and is a schematic diagram showing a mode that rotational motion was converted into reciprocating motion by the conjugate cam.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings as appropriate, but the present invention should not be construed as being limited thereto. Various changes, modifications, improvements, and substitutions can be added based on the knowledge of those skilled in the art without departing from the scope of the present invention. For example, the drawings show preferred embodiments of the present invention, but the present invention is not limited by the modes shown in the drawings or the information shown in the drawings. In practicing or verifying the present invention, the same means as described in this specification or equivalent means can be applied, but preferred means are those described below.

  1A to 9C are diagrams showing an embodiment of a rocking device according to the present invention. 1A is a front perspective view, FIG. 1B is a rear perspective view, FIG. 2A is a front view, FIG. 2B is a plan view (top view), and FIG. 2C is a right side view. . 3A is a cross-sectional view showing the AA cross section in FIG. 2B, FIG. 3B is a cross-sectional view showing the BB cross section in FIG. 2B, and FIG. 3C is a cross-sectional view showing the CC cross section in FIG. 4A to 4C are views showing the conjugate cam, FIG. 4A is a perspective view, FIG. 4B is a plan view (top view), and FIG. 4C is a cross-sectional view showing the FF cross section in FIG. 4B. FIG. 5 is a perspective view showing a cam box (a specific embodiment of a box) that houses a cam mechanism, and FIG. 6 is a bridge that rotatably supports a cam follower (a specific embodiment of a roller) that contacts the conjugate cam. FIG. 7 is a perspective view showing a push-pull rod (a specific mode of a swing bar) that is held by the bridge bar and is connected to a swing plate and swings. 8A is a cross-sectional view showing a DD cross section in FIG. 2B, and FIG. 8B is a cross-sectional view showing an EE cross section in FIG. 2B. FIG. 9A to FIG. 9C are schematic views showing a state in which the rotational motion is converted into the reciprocating motion by the conjugate cam (cam).

  The illustrated swing device 2 includes a cam shaft 40, a conjugate cam 38, cam followers 391a, 391b, 392a, 392b, bridge bars 461a, 461b, 462a, 462b, and push-pull rods 411a, 411b, 412a, 412b. In addition, an electric motor 36, stages 42a and 42b, and linear guides 431a, 431b, 432a, and 432b are provided.

  In the oscillating device 2, the power for the oscillation is given by an electric motor 36 (a specific mode of a rotary prime mover). The rotational motion generated by the electric motor 36 is transmitted to the camshaft 40 (specific mode of the rotating shaft) by the belt 35 (specific mode of the conductive member) and rotates them. Specifically, the belt 35 transmits rotational motion via a pulley 34 provided on the rotation shaft of the electric motor 36 and a pulley 37 provided on the camshaft 40. Along with the rotation control of the electric motor 36, through the rotation speed control by changing the diameters of the pulleys 34, 37, the frequency control for the reciprocating motion (that is, swinging) of the stages 42a, 42b is finally performed. Is possible.

  The rotational motion of the camshaft 40 is converted into two opposing reciprocating motions by a conjugate cam 38 fixed to the camshaft 40 by friction type fastening means. A rotary encoder 47 is provided in the vicinity of the camshaft 40, and the rotary encoder 47 monitors whether the camshaft 40 is actually rotating.

  The conjugate cam 38 has a three-piece structure, and includes two cams 38a and 38b, and a spacer 38c (a non-cam spacing member) for positioning them. A cam follower 391a and a cam follower 391b abut on the cam 38a of the conjugate cam 38. The bridge bar 461a rotatably supports the cam follower 391a (in the center), and the bridge bar 461b rotatably supports the cam follower 391b (in the center). The bridge bars 461a and 461b hold the push-pull rods 411a and 411b (at both ends). Further, a movable stage 42a (specific embodiment of a swing plate) is connected to the push-pull rods 411a and 411b, and the stage 42a is attached to the linear guides 431a and 431b. The push-pull rods 411a and 411b have a tapered surface 71 at the end, and the stage 42a is connected by the tapered surface 71.

  9A to 9C, for example, when the cam 38a of the conjugate cam 38 rotates 90 ° counterclockwise from the position of FIG. 9A, the camshaft 40 is set as the fixed center position. 38a moves so as to push the cam follower 391b, and the bridge bar 461b supporting the cam follower 391b is also pushed to move from right to left in FIGS. 9A to 9C to be in the state of FIG. 9B. 9B, when the cam shaft 40 is further rotated 90 ° counterclockwise, the cam 38a moves to push the cam follower 391b and supports the cam follower 391b. The bridge bar 461b is also pushed to move from the right to the left in FIGS. 9A to 9C to be in the state of FIG. 9C. At the same time, on the opposite side of the camshaft 40, when rotated 90 ° counterclockwise from the position of FIG. 9A, the cam 38a moves so as to be pushed by the cam follower 391a, and the cam follower 391a and the bridge bar 461a that supports the cam follower 391a 9A to 9C, the robot moves from right to left and enters the state shown in FIG. 9B. 9B, when the cam shaft 40 is further rotated 90 ° counterclockwise, the cam 38a moves so as to be pushed by the cam follower 391a, and the cam follower 391a and the bridge The bar 461a moves from right to left in FIGS. 9A to 9C and enters the state of FIG. 9C.

  Subsequently, although not shown, when the cam 38a rotates 90 ° counterclockwise from the position of FIG. 9C, the cam 38a moves to push the cam follower 391a with the camshaft 40 as a fixed central position. The bridge bar 461a that supports the cam follower 391a is also pushed and moves from left to right (in FIGS. 9A to 9C). Further, when the cam shaft 40 is rotated 90 ° counterclockwise, the cam 38a moves so as to push the cam follower 391a, and the bridge bar 461a supporting the cam follower 391a is also pushed. Move from left to right (in FIGS. 9A-9C). At the same time, on the opposite side, the cam 38a moves to be pushed by the cam follower 391b, and the cam follower 391b and the bridge bar 461b that supports it move from left to right (in FIGS. 9A to 9C). Further, when rotated 90 ° counterclockwise, the cam 38a moves so as to be pushed by the cam follower 391b with the camshaft 40 being fixed, and the cam follower 391b and the bridge bar 461b are Move from left to right (in FIG. 9C).

  In the oscillating device 2, as described above, the rotational movement of the camshaft 40 is converted into the reciprocating movement by the cam 38a of the conjugate cam 38 provided on the camshaft 40, whereby the cam followers 391a and 391b and the bridge bar 461a. , 461b and push-pull rods 411a and 411b, the stage 42a to be connected to the cam 38a smoothly reciprocates along the linear guides 431a and 431b.

  The above is the function of converting the rotational motion of the camshaft 40 by the cam 38a of the conjugate cam 38 into reciprocating motion. Similarly, the cam 38b of the conjugate cam 38 functions to convert the rotational motion of the camshaft 40 into reciprocating motion. In the conjugate cam 38, the cams 38a and 39b act so that the phases are shifted by 180 °. For example, when the cam 38a pushes the cam follower 391b, the cam 38b is located on the same side as the cam follower 391a. Move to push 392a.

  Hereinafter, although the figure corresponding to FIG. 9A-FIG. 9C is not shown, the function which converts the rotational motion of the cam shaft 40 by the cam 38b into a reciprocating motion is demonstrated. The cam follower 392a and the cam follower 392b abut on the cam 38b of the conjugate cam 38. The bridge bar 462a rotatably supports the cam follower 392a (at the center), and the bridge bar 462b rotatably supports the cam follower 392b (at the center). The bridge bars 462a and 462b hold the push-pull rods 412a and 412b (at both ends). Further, a movable stage 42b is connected to the push-pull rods 412a and 412b, and the stage 42b is attached to the linear guides 432a and 432b. Note that the push-pull rods 412 a and 412 b have a tapered surface 71 at the end, and the stage 42 b is connected by the tapered surface 71.

  Then, for example, when the cam 38b of the conjugate cam 38 is rotated 90 ° counterclockwise, the cam 38b is positioned at the center position where the camshaft 40 is fixed (at the timing when the cam 38a pushes the cam follower 391b). It moves to push the b cam follower 392a (on the same side as 391a), and the bridge bar 462a supporting the cam follower 392a is also pushed to move from left to right (in FIGS. 9A to 9C). Next, when the cam shaft 40 is further rotated by 90 ° counterclockwise, the cam 38b moves to push the cam follower 392a with the camshaft 40 being fixed, and the bridge bar 462a supporting the cam follower 392a is also pushed. Move from left to right (in FIGS. 9A to 9C). At the same time, on the opposite side of the camshaft 40, when rotated 90 ° counterclockwise, the cam 38b moves so as to be pushed by the cam follower 392b, and the cam follower 392b and the bridge bar 462b that supports the cam follower 392b (see FIGS. 9A to 9C). Move from left to right. Next, when the cam shaft 40 is further rotated by 90 ° in the counterclockwise direction, the cam 38b moves so as to be pushed by the cam follower 392b with the cam shaft 40 being fixed, and the cam follower 392b and the bridge bar 462b are (see FIG. Move from left to right (in 9A-9C).

  Subsequently, when the cam 38b further rotates 90 ° counterclockwise, the cam 38b is set to the same position as the cam follower 391b (at the timing when the cam 38a pushes the cam follower 391a) with the cam shaft 40 being fixed. The cam follower 392b is pushed, and the bridge bar 462b supporting the cam follower 392b is also pushed to move from right to left (in FIGS. 9A to 9C). Further, when the cam shaft 40 is rotated 90 ° counterclockwise, the cam 38b moves so as to push the cam follower 392b, and the bridge bar 462b that supports the cam follower 392b is pushed. Move from right to left (in FIGS. 9A-9C). At the same time, on the opposite side, the cam 38b moves to be pushed by the cam follower 392a, and the cam follower 392a and the bridge bar 462a that supports it move from right to left (in FIGS. 9A-9C). Further, when the cam shaft 40 is rotated 90 ° counterclockwise, the cam 38b moves so as to be pushed by the cam follower 392a with the cam shaft 40 being fixed, and the cam follower 392a and the bridge bar 462a are Move from right to left (in FIG. 9C).

  In the oscillating device 2, as described above, the rotational motion of the camshaft 40 is converted into the reciprocating motion by the cam 38b of the conjugate cam 38 provided on the camshaft 40, whereby the cam followers 392a and 392b and the bridge bar 462a. , 462b and push-pull rods 412a and 412b, the stage 42b to be connected to the cam 38b reciprocates smoothly along the linear guides 432a and 432b.

  The two reciprocating motions of the stages 42a and 42b are such that when the stage 42a advances in one direction, the stage 42b advances in the other opposite direction, and when the stage 42a advances in the other direction, the stage 42b advances in one direction. It is performed in such an operation. In other words, the stages 42a and 42b reciprocate so as to face each other with the conjugate cam 38 and the camshaft 40 interposed therebetween. And by such a reciprocating motion, the bad vibration which occurs with rocking is canceled and suppressed.

  In the swing device 2, the cam mechanism, the electric motor 36, the stages 42 a and 42 b, and the linear guides 431 a, 431 b, 432 a, and 432 b are placed on the base 53. As can be understood from FIGS. 1A and 1B, the base 53 is formed of a plate-like body, and although it is not obvious from the drawings, the base 53 is subjected to an annealing process. And the base 53 is provided via the air spring 31 between floors.

  In the oscillating device 2, as can be understood from FIGS. 1A and 1B, the cam mechanism is housed in a cam box 51 (see a specific embodiment of a box, see FIG. 5). It is fixed to the base 53. The cam box 51 is filled with oil (lubricating oil), for example, about 1/3 to 1/10 of the volume, and the oil is taken out from below the cam box 51 by an oil pump (circulation means). It is fed again from above the cam box 51 (that is, circulates). The push-pull rods 411a, 411b, 412a, 412b of the cam mechanism are provided so as to penetrate the cam box 51, and the cam box 51 swings when a bearing is provided in the penetrating portion (through hole). It also serves as a guide for the push-pull rods 411a, 411b, 412a, 412b.

  The oscillating device 2 is a steel ball (working material) having a diameter of, for example, φ20 mm, which is inserted into a closed space of the EGR passage, which is a casting, for example, as a workpiece on the stages 42a and 42b. At the same time, it is an apparatus that can be swung to carry out a casting hardening method. In order to easily and quickly attach and remove a body to be rocked (for example, an EGR passage and a steel ball), the rocking device 2 has the following mechanism.

  That is, the swing device 2 has a pair of slide members 811a and 811b on the stage 42a in parallel with the gaps facing each other and in the length direction of the push-pull rods 411a and 411b. It is arranged in a direction perpendicular to (direction). The slide member 811b is provided with a clamp 82a (specific mode of tightening means). Further, a stopper 83a (a specific mode of the stop member) is disposed at a position connecting the end portions of the slide members 811a and 811b.

  Similarly, on the stage 42b, a pair of slide members 812a and 812b are parallel to each other with the gap facing each other and perpendicular to the length direction (swinging direction) of the push-pull rods 412a and 412b. Are arranged in the direction of The slide member 812b is provided with a clamp 82b. Further, a stopper 83b is disposed at a position connecting the end portions of the slide members 812a and 812b. In addition, an ultrasonic sensor 84 (a specific form of a proximity sensor) is provided in the vicinity of the stopper 83b.

  When carrying out the casting hardening method using the oscillating device 2, as a preferable oscillating condition, for example, the oscillating number per second (frequency) is approximately 3 to 30 Hz, and the oscillating oscillation The width (amplitude) is approximately 10 to 500 mm. The preferred total swing time is approximately 3 to 180 minutes.

  The oscillating device according to the present invention can be manufactured by processing a steel plate and combining it with commercially available members. In production, it is preferable to determine the size, material, and mechanical strength (for example, the diameter and material of the rotating shaft) of each component in accordance with the swing conditions and the specifications of the workpiece.

  The swing device according to the present invention can be used as means for causing a workpiece to collide with a workpiece by swinging and processing the workpiece. For example, steel balls collide with vehicle ventilation system parts such as EGR (exhaust gas recirculation) passages, intake manifolds, turbine housings, compressor covers, cylinder heads, cylinders, air ducts, etc. It contributes to improving the competitiveness of these ventilation parts for vehicles by imparting properties to reduce the thickness and weight, and further eliminate pinhole defects.

  Further, the rocking device according to the present invention can be used for polishing, grinding, dimple formation and other surface processing based on rocking, removal of core sand and other unnecessary residues, etc. Contributes to improving the competitiveness of processed castings and other processed products.

2 Oscillator 36 Electric motor 38 Conjugate cam 40 Camshaft

Claims (16)

A rotary type motor, a cam mechanism that converts the rotational motion generated by the rotary type motor into two horizontally opposed linear motions, and two horizontally opposed linear motions that are symmetrically arranged and converted by the cam mechanism. Two or more swing plates that move, and two or more linear guide mechanisms that smoothly swing the swing plates,
The cam mechanism includes a rotating shaft connected to the rotary prime mover, a conjugate cam provided on the rotating shaft, a pair of rollers provided with the conjugate cam sandwiched therebetween and each contacting the conjugate cam, and the pair of rollers A swing having a pair of bridge bars that rotatably support the rollers, and a pair of swing bars fixed to both ends of the pair of bridge bars and connected to the two or more swing plates, respectively. apparatus.   The rocking device according to claim 1, wherein the conjugate cam has a two-piece or three-piece structure.   The rocking device according to claim 1 or 2, wherein the conjugate cam is fixed to the rotating shaft by friction type fastening means.   The rocking device according to any one of claims 1 to 3, further comprising a rotation detection sensor in the vicinity of a rotation shaft of the cam mechanism.   The rocking device according to any one of claims 1 to 4, wherein the rocking bar has a tapered surface at an end thereof, and the rocking plate is connected to the tapered surface.   6. The pair of slide members forming a thin flat or tapered gap on the swing plate are arranged in parallel with the gap facing each other. Swing device.   The rocking device according to claim 6, wherein one or both of the pair of slide members is provided with a tightening unit that presses the gap so as to crush the gap.   The rocking member according to claim 6 or 7, wherein a stop member that forms a thin flat or tapered gap is disposed at a position connecting the same end portions of the pair of slide members disposed in parallel. apparatus.   The swing device according to claim 8, further comprising a proximity sensor in the vicinity of the stop member.   It has a base on which the rotary prime mover, the cam mechanism, the swing plate, and the linear guide mechanism are placed, and the base is formed of a plate-like body and is subjected to an annealing process. The oscillating device according to any one of claims 1 to 9.   The rocking device according to claim 10, further comprising an air spring between the base and a floor on which the base is placed.   The rocking device according to claim 10 or 11, wherein the cam mechanism is accommodated in a box, and the box is fixed to the base.   The rocking device according to claim 12, wherein the rocking bar of the cam mechanism is provided so as to penetrate the box, and the box also serves as a guide for the rocking bar.   The rocking device according to claim 12 or 13, wherein the box is filled with lubricating oil, and includes a means for circulating the lubricating oil.   The oscillating body fixed and oscillated on the oscillating plate includes a workpiece having a closed space, and a workpiece put into the closed space of the workpiece. The rocking device according to any one of the above.   The rocking device according to claim 15, wherein the workpiece is a vehicle ventilation system component.

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