JP5037994B2 - Surface layer processing jig for vehicle wheels - Google Patents

Description

  The present invention relates to a surface layer processing jig used for processing a surface layer of a rim of a vehicle wheel that is a cast product and repairing a minute casting defect.

  For example, in recent motorcycles such as motorcycles and scooters, light alloy wheels in which a rim and a thick spoke are integrally formed are frequently used. This is because such a wheel is excellent in strength and design. Although there are forged products having high strength as integrally formed vehicle wheels for motorcycles, the material yield is high, and most of them are cast products (cast wheels) produced through a casting process. .

  However, in a motorcycle wheel for a motorcycle made of a light alloy that is a cast product, a minute casting defect may occur on the surface of the wheel, resulting in a deterioration in quality in terms of design. As casting defects appearing on the surface, pores (pinholes) appearing as holes are known, which are usually extremely fine. However, since the vehicle wheel, particularly for motorcycles, is visually recognized except for the portion where the tire is mounted, even a very small hole is a concern. In particular, most people who purchase large, expensive motorcycles with high tastes place great importance on the external shape, aesthetics, and design, so even a very small casting defect is not allowed.

  Generally, the above casting defects cannot be repaired or made inconspicuous only by forming a film by painting. For this reason, in the past, a very strict defect repair operation was performed in which the putty was particularly carefully filled in the hole that was a casting defect. As a result, we faced the problem of reduced production efficiency. In addition, it seems that there is no prior literature suggesting improvement of such a problem.

  In particular, in a vehicle wheel for a four-wheeled vehicle, there is a point to be improved that a problem of pressure leakage of a mounted tire is likely to occur as compared with a forged product due to generation of a casting defect. Patent Document 3 is cited as a prior document that proposes an improvement from the viewpoint of preventing pressure leakage of a vehicle wheel.

JP 2004-322112 A JP 2004-174604 A Japanese Patent Laid-Open No. 62-15025

  The present invention has been made in view of the above-described circumstances, and the object of the present invention is to efficiently perform a vehicle wheel without performing correction processing by putting putty or without placing a heavy burden on these operations. It is an object of the present invention to provide a means capable of repairing a micro casting defect generated in a rim of the rim.

  Another object of the present invention is to provide means for obtaining a vehicle wheel that does not cause pressure leakage of a mounted tire.

  As a result of the examination, by applying the casting hardening method developed by the present applicant (see Patent Document 1), it is possible to repair minute casting defects appearing on the vehicle wheel and to prevent pressure leakage. I came up with the idea that it might be possible. This method of hardening the casting is a means that can form a dense layer thicker than the plastic deformation layer by shot peening treatment on the surface side of the casting (casting product) by causing the hardening material to collide with the surface of the casting. According to the means, it is possible to impart desired mechanical properties to the casting.

  However, when we planned to try to seal the surface of the vehicle wheel by clogging the pores by the casting hardening method, it was applied to all products in the manufacturing process of mass-produced products such as the vehicle wheel. The present inventors faced the reality that a new means for efficiently performing the casting curing method itself was necessary.

  That is, the casting curing method developed by the present applicant is to swing the casting with the curing material in order to cause the curing material to collide with the surface of the casting. It is necessary to replace the vehicle wheel and the hardened material that collides with it with a rocking device, which reduces the production efficiency of the vehicle wheel and is cheaper than the forged product. The problem to be improved, which is to dampen the merits of the above, has been faced (refer to Patent Document 1 and Patent Document 2 regarding the rocking device).

  Moreover, when a method for hardening a casting was actually attempted on the surface of a vehicle wheel, the rim, in particular, has a circular shape and a curved surface. It was found that it was difficult to make a collision efficiently.

  That is, in the casting curing method developed by the present applicant, the casting is swung in the horizontal direction together with the curing material in order to cause the curing material to collide with the surface of the casting (see Patent Document 1 and Patent Document 2). When a casting is cured on a cylindrical rim, the space surrounded by the rim is closed with the vehicle wheel sideways, and a hardener is introduced into the space to make it swing. become. However, the hardened material moves linearly (reciprocating) in the horizontal direction due to rocking, whereas the surface of the rim of the vehicle wheel is a curved surface, so the impact angle of the hardened material against the rim varies depending on the location of the rim. In particular, on the surface that forms an angle parallel to or close to the direction of oscillation (the direction of movement (movement) of the hardener), the hardener hardly collides. Therefore, we faced the problem to be solved that the hardened material could not collide with the entire surface of the rim of the vehicle wheel at once. On the other hand, it is possible to change the way the vehicle wheel is placed and make it swing repeatedly. However, such a response is complicated and requires a long time, so it is cheaper than a forged product. Attenuate the advantages of castings.

  It has been found that the properties of the surface of the rim of the vehicle wheel deteriorate rather when the conventionally known shot peening process is performed. As a result of research on this phenomenon, the shot peening process is limited to processing only the surface of the vehicle wheel (casting product), and the minute casting defects existing on the surface layer of the vehicle wheel (near the surface of the inside) are eliminated. Since it does not have the effect of being crushed, even when shot peening is performed, pores (pinholes) that existed in the surface layer appeared on the surface, forming new holes, and the surface was rather rough. It was thought that it might be. This cannot improve the defect rate.

  Moreover, if the pressure leak location is known, it is possible to prevent the pressure leak by performing shot peening treatment there. However, it is very complicated to perform the inspection for specifying the pressure leak location in advance on all products (vehicle wheels).

  Therefore, further research has been conducted for a means suitable for a mass production process capable of efficiently repairing a casting defect generated on the surface of a rim of a vehicle wheel and preventing pressure leakage, and the present invention shown below. It came to complete.

  First, according to the present invention, there is provided a jig used for processing a surface layer of a rim in a vehicle wheel, the main body member having a columnar shape or a cylindrical shape, and a processing material, and a columnar shape. Alternatively, the cylindrical main body member has a main recess on its peripheral surface that is recessed from the peripheral surface toward the central axis, and the processed material is a spherical body having a specific gravity of 2 to 10 and a diameter of 5 mm to 20 mm. Alternatively, a surface layer processing jig for a vehicle wheel configured to include a polyhedron is provided (also simply referred to as a surface layer processing jig).

  In this specification, the surface layer means the surface and the surface layer, and the simple term “surface layer” means the vicinity of the surface excluding the surface. Further, the diameter of the polyhedron is the average of the maximum value and the minimum value of the distance connecting the outer surface and the outer surface of the polyhedron through the center of the polyhedron.

  The columnar shape or the cylindrical shape is a general shape of the main body member adapted to the vehicle wheel, and may not be a columnar shape or a cylindrical shape in a geometrically strict sense. As will be described later, the surface layer processing jig for the vehicle wheel swings in the vertical direction and performs surface layer processing (described later) on the rim of the vehicle wheel. A cylindrical shape is preferred. The peripheral surface refers to the peripheral surface of the main body member having a columnar shape or a cylindrical shape, and is an outer surface connecting the two end surfaces of the columnar shape constituting the main body member. In the case of a cylindrical shape, the corresponding surface (outer surface) It is.

  The surface layer processing jig for a vehicle wheel according to the present invention has a sub-concave portion formed deeper in the central axis direction of the main body member on the peripheral surface side of the main body member having a columnar shape or a cylindrical shape. And it is preferable that the said processed material is accommodated in at least any one of a main recessed part and a sub recessed part.

  The sub-recess can be formed by providing a wall on the outside of the peripheral surface of the body member having a columnar shape or a cylindrical shape with a certain space serving as the sub-recess. This wall is called an edge wall, and this edge wall may be configured as an edge wall part integrated with the main body member, or may be configured as an edge wall member physically separated from the main body member.

  In the surface layer processing jig for a vehicle wheel according to the present invention, the main recess is also called a work area and the sub-recess is also called a pocket. The main recess (work area) is preferably formed by a curved surface that is recessed (recessed) from the peripheral surface toward the central axis. The main recess (work area) is a space formed by a recess on the peripheral surface, and is an open space if the vehicle wheel is not attached to the surface layer processing jig for the vehicle wheel. As will be described later, in the embodiment in which the surface layer of the rim in the vehicle wheel is processed, this space is a closed space, and the work material functions to collide with the surface of the rim, so that the work material is accommodated. In contrast to a pocket which is a space, it is also called a work area.

  In the surface layer processing jig for a vehicle wheel according to the present invention, it is preferable that the surface forming the main concave portion of the main body member has an arc surface.

  In the surface layer processing jig for a vehicle wheel according to the present invention, it is preferable that the main recess is formed continuously on the peripheral surface.

  In the surface layer processing jig for a vehicle wheel according to the present invention, the processed material may be accommodated in the main recess and the sub-recess, or only in the sub-recess.

  In the surface layer processing jig for a vehicle wheel according to the present invention, it is preferable that the amount of the processed material is approximately 5% or more and 30% or less in volume ratio with respect to the volume of the main recess.

  The main concave portion (work area) is a hollow (dented) portion formed on the peripheral surface of the main body member, and is an open space. In this specification, the volume of the main concave portion (work area) is The volume when the main recess (work area) is closed with a flat plate is assumed. Since the rim of the vehicle wheel is usually flat, the volume of the closed space described later is approximately equal to the volume of the main recess (work area).

  In the jig for processing a surface layer for a vehicle wheel according to the present invention, it is preferable that a spherical body or a polyhedron having a diameter of φ5 mm to φ20 mm occupies 70% by volume or more of the whole workpiece.

  In the jig for surface layer processing for a vehicle wheel according to the present invention, the specific gravity of the processed material is preferably 5 to 10.

  The above-mentioned surface layer processing jig for vehicle wheels according to the present invention is suitably used when the vehicle wheel is a light alloy casting for a four-wheeled vehicle having a rim and a disk. .

  In the vehicle wheel surface layer processing jig according to the present invention, the main concave portion of the main body member has a slot shape, and the main concave portion has a columnar or cylindrical shape with respect to the central axis of the main body member. It is preferable that it is formed to be inclined. Such a surface layer processing jig for a vehicle wheel according to the present invention is suitably used particularly when the vehicle wheel is a cast product made of a light alloy for a motorcycle having a rim and a spoke. Is done.

  In this specification, light alloys refer to aluminum alloys, magnesium alloys, and the like for casting. Examples of aluminum alloys include AC4C, AC4CH, AC4B, AC4D, AC2A, AC2B, and AC3A based on Japanese Industrial Standards (JIS). It can be illustrated. AZ91, AM60 etc. can be illustrated as a magnesium alloy.

  Next, according to the present invention, any of the above-described surface layer processing jig for vehicle wheel, and a swinging means for swinging the surface layer processing jig for vehicle wheel in the vertical direction, A vehicle wheel surface layer processing apparatus is provided (also simply referred to as a surface layer processing apparatus).

  In the vehicle wheel surface layer processing apparatus according to the present invention, the swinging means includes a prime mover, a rotary shaft connected to the prime mover, a crank provided on the rotary shaft, and a crank and a connecting rod. A rocking mechanism having a rocking plate to be connected and two or more linear motion guides attached to the rocking plate and reciprocating the rocking plate up and down. For the vehicle wheel fixed to the swing plate by the swing plate connected to the crank reciprocating up and down along the linear motion guide. It is preferable to swing the surface layer processing jig in the vertical direction.

  In the vehicle wheel surface layer processing apparatus according to the present invention, it is preferable that the rotating shaft is further provided with another crank, and a counterweight is attached to the crank.

  In the vehicle wheel surface layer processing apparatus according to the present invention, the swing mechanism is preferably placed on a floor and an air spring is provided between the swing mechanism.

  The vehicle wheel surface layer processing apparatus according to the present invention is preferably provided with vibration suppression weights on both sides of the swing mechanism and directly above the air spring.

  In the vehicle wheel surface layer processing apparatus according to the present invention, the vibration frequency is preferably 3 Hz or more and 30 Hz or less. The frequency of oscillation is more preferably 5 Hz to 20 Hz, particularly preferably 8 Hz to 15 Hz.

  In the surface layer processing apparatus for a vehicle wheel according to the present invention, it is preferable that the rocking time for rocking is 10 seconds to 3 minutes.

  In the present specification, vertical swing means vertical swing.

  The surface layer processing jig for a vehicle wheel according to the present invention is preferably incorporated and used in a surface layer processing device for a vehicle wheel, which will be described later, in order to process the surface layer of the rim in the vehicle wheel. It is a jig. That is, the surface layer processing jig for a vehicle wheel according to the present invention swings up and down (vertically) in a state in which the vehicle wheel is incorporated therein, so that the work material of the vehicle wheel is The rim is configured to collide with the surface of the rim (the surface of the rim opposite to the side on which the tire is mounted). When the workpiece collides with the surface of the rim of the vehicle wheel, the minute casting defect that may exist on the surface of the rim of the vehicle wheel is repaired, and the minute casting defect existing in the surface layer is crushed and sealed. . In this specification, this is called surface layer processing.

  And as above-mentioned, the jig | tool for surface layer processing for vehicle wheels which concerns on this invention is specified as what is provided with a main body member and a processed material, and the vehicle wheel which is a process target in invention specific matter Is not included. However, the surface layer processing jig for a vehicle wheel according to the present invention is used for processing the surface layer of the rim of the vehicle wheel, and the vehicle wheel to be processed is always incorporated when used. . Therefore, each component of the surface layer processing jig for a vehicle wheel according to the present invention is specified in shape, size, etc. by the vehicle wheel to be processed, and the function is also the same as that of the vehicle wheel. It becomes clear by the relationship. Thus, each component of the surface layer processing jig for a vehicle wheel according to the present invention will be described below including the relationship with the vehicle wheel.

  The main body member is configured such that when the vehicle wheel is attached to the surface wheel processing jig for the vehicle wheel, the rim of the vehicle wheel closes the work area of the main body member to form a closed space. That is, the work area is formed on the peripheral surface of the main body member (circumferentially), preferably continuously, in accordance with the shape of the rim of the vehicle wheel. In other words, the work area is provided at a position that is just blocked by the rim of the vehicle wheel attached to the surface layer processing jig for the vehicle wheel.

  When the surface layer processing jig for a vehicle wheel is stationary (not swinging), the workpiece is always at least one of a main recess (work area) and a sub recess (pocket) formed in the main body member. It is housed inside. When the vehicle wheel is incorporated in the surface layer processing jig for the vehicle wheel and is swung in the vertical direction, the workpiece accommodated in the pocket jumps out of the closed space. Since the work area constituting the closed space is formed by a curved surface that is recessed (recessed) from the peripheral surface toward the central axis, the workpiece does not move in the vertical direction and starts rotating in the closed space. Since there is a certain amount of work material in the closed space (preferably approximately 5% to 30% in volume ratio with respect to the volume of the work area (closed space)), the work material is a lump in the closed space. While rotating to draw a circle, the main body member forming the work area collides with the body wheel rim (the surface) of the vehicle wheel that closed the work area. Since the pocket is formed so as to be deeper along the central axis direction, if the central axis direction is set to the downward direction, when the swinging is finished, the workpiece stored in the pocket returns naturally by gravity. .

  The work area formed in the main body member is preferably formed by a curved surface that is recessed (recessed) from the peripheral surface toward the central axis. This is because, as described above, the workpiece is caused to rotate in the closed space by the vertical swing and collide with the rim (the surface) of the vehicle wheel that blocks the work area. . The work area is preferably formed continuously on the peripheral surface. In the form of the concave (depressed) curved surface of the work area, it is preferable that the shape appearing in the cross section connecting the peripheral surface and the central axis and parallel to the central axis is an arc shape, and the entire work area is a constant shape. .

  In the surface layer processing jig for vehicle wheel according to the present invention, when the main recess (work area) is a slot, the main recess is also simply referred to as a slot, and a slot is formed. What constitutes the main body member is also called a perforated wall member. As a preferred embodiment of the surface layer processing jig for a vehicle wheel according to the present invention, a bottom plate member which is a substrate of the jig, a perforated wall member disposed on the bottom plate member, and a columnar shape or a cylinder thereof A configuration comprising an attachment member positioned at the center of a perforated wall member (main body member) having a shape and disposed on the bottom plate member for positioning and fixing the vehicle wheel with respect to the perforated wall member. I can list them. In this case, it is preferable that the slot provided in the perforated wall member is formed to be inclined with respect to the bottom plate member. Since the bottom plate member constitutes a surface perpendicular to the direction of the central axis of the perforated wall member (main body member) having a columnar shape or a cylindrical shape, in other words, a slot-shaped main concave portion (groove hole) is a columnar shape. The perforated wall member (main body member) having a shape or a cylindrical shape is preferably formed to be inclined with respect to the central axis. That is, that the slot is formed to be inclined with respect to the bottom plate member means that the surface of the perforated wall member that forms the slot is inclined with respect to the bottom plate member that is a flat substrate. means.

  In the surface layer processing jig for a vehicle wheel according to the present invention, it is preferable that the surface forming the main concave portion of the main body member has an arc surface, and this is because the surface forming the slot of the perforated wall member is In other words, it has an arc surface, which means that an arc surface exists on the surface of the perforated wall member forming the slot. In the surface layer processing jig for a vehicle wheel according to the present invention, since the main recess is preferably formed continuously on the peripheral surface, the slot is preferably formed in a circumferential shape. And preferably, the circular arc surface which a slot has is provided facing the opening part (perforated wall member) of a slot. In other words, the arc surface of the slot appears in a cross section passing through the central axis of the perforated wall member (main body member) having a columnar shape or a cylindrical shape.

  As described above, the surface layer processing jig for a vehicle wheel according to the present invention includes a bottom plate member and an attachment member in addition to a main body member (a perforated wall member) and a processed material. Although specified, this aspect does not include the vehicle wheel to be processed in the invention specifying items. However, since the vehicle wheel to be processed is always incorporated at the time of use, each configuration in the preferred embodiment of the surface layer processing jig for a vehicle wheel according to the present invention including the relationship with the vehicle wheel will be described below. The element will be described.

  The bottom plate member is a substrate and a foundation of the jig. A perforated wall member having a columnar shape or a cylindrical shape is disposed on the bottom plate member, and an attachment member is disposed at the center of the perforated wall member. The size of the bottom plate member is preferably larger than at least the flange diameter size of the rim of the vehicle wheel.

  In other words, the shape of the perforated wall member is a donut shape having a certain width. The perforated wall member is preferably a member having a slot formed in a circumferential shape inside itself. A slot is a donut-shaped space (hole) that also has a constant width. And the processed material is accommodated also in the slot.

  The perforated wall member is configured such that when the vehicle wheel is attached to the surface layer processing jig, the rim of the vehicle wheel closes the slot of the perforated wall member to form a closed space. That is, the slot is formed in a circumferential shape, preferably continuously, in accordance with the shape of the rim of the vehicle wheel, and the opening of the slot is exactly the vehicle attached to the surface layer processing jig. It is provided at a position that is blocked by the rim of the wheel.

  In this preferred embodiment, the workpiece is always accommodated in a slot formed in the perforated wall member when the surface layer processing jig is stationary (not swinging). When the vehicle wheel is incorporated into the surface layer processing jig and swung in the vertical direction, the workpiece is rotated in the closed space, and the substantial portion of the perforated wall member (slot hole) ) And the rim (the surface) of the vehicle wheel that blocks the slot. When the swinging is finished, the workpiece naturally returns to its original position by gravity, that is, the state accommodated in the slot.

  As described above, the slot formed in the perforated wall member is preferably inclined with respect to the bottom plate member. This is because the workpiece is moved in the closed space by the vertical swinging and collides with the rim (the surface) of the vehicle wheel that has closed the slot. The inclination varies depending on the shape of the rim, but it is constant for the whole formed slot, preferably continuously, and decreases (becomes lower) toward the center of the circumference. preferable. The inclination angle is preferably close to 90 ° (close to the vertical) with respect to the horizontal in order to facilitate movement of the workpiece by swinging in the vertical direction (vertical direction) when the bottom plate member is leveled. The preferable angle of inclination based on the shape of the normal rim is 20 to 80 ° from the horizontal plane, and more preferably 30 to 80 °. In such a preferred embodiment, the slot will open an opening in the circumferential direction toward the upper outside in the perforated wall member.

  The mounting member is a member for positioning and fixing the vehicle wheel with respect to the holed wall member when the vehicle wheel is incorporated in the surface layer processing jig. The mounting member includes a projecting shaft portion that passes through the hub hole of the vehicle wheel, a holding plate portion that holds the vehicle wheel at the hub portion, and a tightening that tightens to fix the vehicle wheel to the surface layer processing jig. Part.

  Since the projecting shaft portion constituting the mounting member is a portion that communicates with the hub hole of the vehicle wheel, one is disposed on the bottom plate member at the center of the perforated wall member. Since the diameter of the projection shaft portion is determined according to the hub hole of the vehicle wheel, it is usually about φ16 mm to φ30 mm. When the vehicle wheel is incorporated into the surface layer processing jig, the vehicle wheel is positioned so that the rim closes the slot of the perforated wall member by passing the hub hole through the protruding shaft portion.

  The positioned vehicle wheel is pressed by a pressing plate portion made of, for example, a circular plate that matches the shape of the hub, and further fixed by a tightening portion made of, for example, a bolt (to the surface layer processing jig). Is done. When the tightening portion is a bolt, a screw hole is formed in the protruding shaft portion so that the protruding shaft portion functions as a nut.

  In the preferable aspect of the surface layer processing jig for a vehicle wheel according to the present invention, it is preferable to further provide a base member and an edge wall member in addition to the bottom plate member, the holed wall member, the mounting member, and the processed material. . Both the base member and the edge wall member are members that receive the load of the vehicle wheel.

  The pedestal member is, for example, a circular pedestal that receives a load at the hub of the vehicle wheel, and is provided on the outer side (of the protruding shaft portion) of the mounting member and on the inner side of the perforated wall member. The edge wall member is a base that receives a load at the flange portion of the rim of the vehicle wheel, and in addition, is a member for forming a side groove (sub-recess) in which the workpiece is accommodated. Therefore, in order to match the shape of the flange of the rim, the shape thereof is a circumferential shape and is provided further outside the perforated wall member. The circumferential edge wall member preferably has a certain width. This is because it is possible to cope with variations in machining according to the rim diameter of the vehicle wheel. Moreover, it is preferable that the edge wall member is comprised by the engineering plastic material softer than the light alloy material which comprises the wheel rim (flange) of a vehicle wheel. This is because it is difficult to damage the vehicle wheel, and in addition, the vehicle wheel is stabilized on the edge wall member when the vehicle wheel is placed.

  The jig for surface layer processing for a vehicle wheel according to the present invention swings up and down (vertically) in a state in which the vehicle wheel is incorporated therein, so that the workpiece becomes a rim of the vehicle wheel. It is configured to collide with the surface (surface of the rim opposite to the side on which the tire is mounted). When the workpiece collides with the surface of the rim of the vehicle wheel, the minute casting defect that may exist on the surface of the rim of the vehicle wheel is repaired and the pores existing in the surface layer are crushed (sealing treatment is performed). . By performing the surface layer processing, there is no continuous pore passing through the rim, and pressure leakage from the rim during tire mounting is prevented.

  A vehicle wheel surface layer processing jig according to the present invention is housed in a main body member having a work area formed in accordance with a rim of a vehicle wheel, and at least one of a work area and a pocket of the main body member. When the surface layer processing is performed by colliding the processing material against the surface of the rim of the vehicle wheel, the vehicle wheel can be easily replaced and the processing material can be replaced. It is unnecessary. For this reason, the surface layer processing can be performed efficiently, and the surface layer processing can be performed in a mass production process of a mass-produced product such as a vehicle wheel.

  When the surface layer processing jig for the vehicle wheel according to the present invention does not exist, each time the surface layer processing is performed, the vehicle wheel is attached to the swinging device together with the processing material, and the processing is performed. It will be necessary to remove it when finished, and this will take a lot of time. From the viewpoint of production efficiency, it is difficult to perform surface layer processing in the mass production process of mass-produced products such as vehicle wheels. there were. If the jig for surface layer processing for vehicle wheels according to the present invention is used, it is possible to greatly reduce the work load and time required for the replacement of the vehicle wheel and work material, and surface layer processing for mass production processes. Processing can be applied.

  For example, if the surface layer processing jig for a vehicle wheel according to the present invention is installed in advance in a device that swings up and down, the vehicle wheel is fixed to the surface layer processing jig for a vehicle wheel. The surface layer processing can be performed immediately by just doing the work of doing. That is, the vehicle wheel can be attached to the device that swings up and down easily and quickly, and the vehicle wheel can be removed from the device that swings up and down. Since the processed material is always accommodated in the main body member, it is not necessary to replace the processed material when performing surface layer processing on a new vehicle wheel.

  As soon as the vehicle wheel is attached to the vehicle wheel surface layer processing jig according to the present invention, a closed space is created in which the work material rotates and collides with the surface of the vehicle wheel rim, Further, the workpiece is always accommodated in the main body member of the surface layer processing jig for the vehicle wheel (in at least one of the main recess (work area) and the sub recess (pocket)). Therefore, the surface layer processing can be performed immediately after the vehicle wheel is attached to the vehicle wheel surface layer processing jig according to the present invention. Therefore, the throughput in applying the surface layer processing to the vehicle wheel is very high.

  The vehicle wheel surface layer processing apparatus according to the present invention includes the vehicle wheel surface layer processing jig according to the present invention and a swinging means for swinging the surface layer processing jig in the vertical direction. This is a specific means for swinging the vehicle wheel incorporated in the surface layer processing jig (including the workpiece) for the vehicle wheel in the vertical direction. A vehicle wheel surface layer processing apparatus according to the present invention is a vehicle wheel according to the present invention described above, by swinging a vehicle wheel incorporated in a surface layer processing jig for a vehicle wheel in the vertical direction. The excellent effect is recognized in the place where the effect of the surface layer processing jig for the wheel is derived.

  When a vehicle wheel is incorporated into a vehicle wheel surface layer processing jig according to the present invention included in the vehicle wheel surface layer processing apparatus according to the present invention, a circumferential vehicle wheel The rim closes a work area formed on the peripheral surface of the main body member having a columnar shape or a cylindrical shape, and a circumferential closed space is formed on the entire surface of the rim of the circumferential vehicle wheel. When the vehicle wheel incorporated in the surface layer processing jig for the vehicle wheel is swung vertically by the rocking means, the specific gravity is 2 to 10 and the diameter is 5 mm or more in the closed space. The workpiece including at least the spherical body or polyhedron collides with the surface of the rim of the vehicle wheel at a time. Therefore, a minute casting defect including pores that may exist on the surface of the rim of the vehicle wheel can be efficiently repaired, and pressure leakage can be prevented by a sealing process that crushes the pores. Then, if necessary, finish processing (for example, lathe processing) on the surface of the rim eliminates the need for correction processing using a large amount of nerve that has been conventionally performed, or at least places a heavy burden on these operations. However, the labor and time required for them can be reduced, and the productivity of the vehicle wheel is greatly improved.

  As described above, when the vehicle wheel surface layer processing apparatus according to the present invention is used and the vehicle wheel is incorporated in the vehicle wheel surface layer processing jig according to the present invention included in the vehicle wheel surface layer processing apparatus, The vehicle wheel can be made to collide with the surface of the rim of the vehicle wheel at the same time, and the position where the workpiece collides with the surface of the vehicle wheel is not limited. Can be obtained. Further, in order to repair a minute casting defect existing on the surface of the vehicle wheel, it is not necessary to change the way the vehicle wheel is placed and repeatedly swing it.

  The surface layer processing jig for a vehicle wheel according to the present invention constituting the vehicle wheel surface layer processing apparatus according to the present invention has a work area on the peripheral surface, and the work area is closed by a rim. Thus, it becomes a space where the work material moves. Since the work area is preferably formed with a curved surface that is recessed (recessed) from the peripheral surface toward the central axis, when the work material is swung in the vertical direction, what is contained in the pocket is there. Slid out from the surface of the work area, continuously rotating and colliding with the surface of the rim of the vehicle wheel, and evenly colliding with the surface of the rim of the vehicle wheel that closed the work area. .

  If the work area is not formed with a curved surface that is recessed (recessed) from the peripheral surface toward the central axis, the workpiece is efficiently rotated in the work area by swinging in the vertical direction. hard. Accordingly, it is difficult to efficiently cause the workpiece to collide with the surface of the rim of the vehicle wheel.

  When the workpiece swings in the left-right direction (horizontal direction), the workpiece reciprocates in the left-right direction. In this case, the workpiece having a specific gravity (mass) due to gravity is reduced by the rim of the vehicle wheel. The concentrated surface collides with the lower surface, and the workpiece cannot collide uniformly with the entire surface of the rim of the vehicle wheel. In addition, due to gravity, the work material concentrates and collides with the lower surface of the rim of the vehicle wheel. As a result, the work materials collide wastefully and lose energy, so the work material is efficiently used for the vehicle. It is impossible to make a collision with the wheel rim surface. Furthermore, when the workpiece is reciprocated in the left-right direction to collide with the surface of the rim of the vehicle wheel, the rim has a cylindrical shape. Since there is no collision, surface layer processing cannot be performed at once. Therefore, it is necessary to cause the workpiece to collide with the surface of the rim while changing the direction of the vehicle wheel or rotating the vehicle wheel, and the processing time becomes long.

  The vehicle wheel surface layer processing apparatus according to the present invention includes the vehicle wheel surface layer processing jig according to the present invention, and preferably by a work area formed by a concave (depressed) curved surface, Efficient workpiece rotation with low energy loss is obtained. Thereby, it is possible to repair micro casting defects such as pores that may exist on the entire surface of the rim of the vehicle wheel and prevent pressure leakage without requiring labor in a short time.

  The surface layer processing jig for a vehicle wheel according to the present invention, in a preferred embodiment thereof, has a perforated wall member having a slot formed in accordance with the flange shape of the rim of the vehicle wheel, and a hub hole of the vehicle wheel. In this aspect, the work material is made to collide with the surface of the rim of the vehicle wheel, so that the work material is accommodated in the slot of the perforated wall member. In performing the surface layer processing, it is easy to replace the vehicle wheel, and it is not necessary to replace the workpiece. For this reason, the surface layer processing can be performed efficiently, and the surface layer processing can be performed in a mass production process of a mass-produced product such as a vehicle wheel. By using the preferred embodiment of the surface layer processing jig for a vehicle wheel according to the present invention, it is possible to greatly reduce the work load and time required for the replacement of the vehicle wheel and the processing material, and the mass production process. It is possible to apply surface layer processing to the surface.

  For example, if this preferable aspect of the surface layer processing jig for a vehicle wheel according to the present invention is installed in advance in an apparatus that swings up and down, the vehicle wheel is attached to the surface layer using an attachment member. The surface layer processing can be performed immediately by simply performing the operation of positioning and fixing to the processing jig. By simply operating the mounting member, it is possible to attach the vehicle wheel to the device that swings up and down easily and quickly and to remove the vehicle wheel from the device that swings up and down. Since the vehicle wheel is positioned by the mounting member (projection shaft portion thereof), fine adjustment of the position is not necessary when the vehicle wheel is incorporated into the surface layer processing jig. Since the workpiece is a slot in the perforated wall member and is always accommodated in a place that becomes a closed space when the vehicle wheel is attached, when processing the surface layer on a new vehicle wheel, There is no need to replace the processed material.

  When the vehicle wheel is attached to this preferred embodiment of the vehicle wheel surface layer processing jig according to the present invention, the closed space in which the workpiece rotates in order to cause the workpiece to collide with the surface of the rim of the vehicle wheel immediately. Was born, and it always contains processed materials. Therefore, the surface layer processing can be performed immediately after the vehicle wheel is attached to this preferred embodiment of the vehicle wheel surface layer processing jig according to the present invention. Therefore, the throughput in applying the surface layer processing to the vehicle wheel is very high.

  A preferred embodiment of the vehicle wheel surface layer processing jig according to the present invention that can constitute the vehicle wheel surface layer processing apparatus according to the present invention has a circumferentially formed slot, The workpiece is accommodated in the slot, preferably the slot is formed with an inclination, and more preferably the slot has an arc surface. For this reason, the workpiece continuously collides with the surface of the rim of the vehicle wheel while rotating in a slot having an arcuate surface. If the slot is not formed with an inclination or has a circular arc surface, the rotational movement of the workpiece in the slot cannot be performed smoothly, and the workpiece is efficiently collided with the surface of the rim of the vehicle wheel. However, according to a preferred aspect of the vehicle wheel surface layer processing apparatus according to the present invention, the slanted hole having an arcuate surface can reduce the energy loss and achieve an efficient work material. Rotational motion is obtained. Therefore, it is possible to repair a minute casting defect that may exist on the entire surface of the rim of the vehicle wheel and prevent pressure leakage without requiring labor in a short time.

  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.

  First, a surface layer processing jig for a vehicle wheel according to the present invention and a surface layer processing performed using the jig will be described. 1A, 1B, and 6A are views showing an embodiment of a surface layer processing jig for a vehicle wheel according to the present invention, FIG. 1A is a plan view, and FIG. 1B is a view in FIG. 1A. FIG. 6A is a perspective view showing a DD section, and FIG. 6A is a perspective view. 2 and 6B are views showing a state in which the vehicle wheel (for the motorcycle shown in FIGS. 5A and 5B) is incorporated in the surface layer processing jig for the vehicle wheel according to the present invention, 2 is a cross-sectional view, and FIG. 6B is a perspective view. 4A to 4D are cross-sectional views showing a part of the surface and the surface layer of the rim of the vehicle wheel, and the operation of the surface layer processing is described with reference to FIGS. 4A to 4D. FIG. 4A is a cross-sectional view showing a part of a surface and a surface layer of a rim of a vehicle wheel after casting, in which a state in which a minute casting defect exists is shown. FIG. 4B is a cross-sectional view illustrating a state in which rough processing is performed on the rim of the vehicle wheel. FIG. 4C is a partial cross-sectional view illustrating a state in which the surface layer processing is performed on the rim of the vehicle wheel. FIG. 4D is a cross-sectional view illustrating a state in which finishing is performed on the rim of the vehicle wheel. 5A and 5B are diagrams illustrating an example of a vehicle wheel that is a target for surface layer processing and is incorporated in a surface layer processing jig for a vehicle wheel according to the present invention. 5A is a plan view of the vehicle wheel, and FIG. 5B is a cross-sectional view showing a CC cross section in FIG. 5A.

  The vehicle wheel 22 shown in FIGS. 5A and 5B is a cast product made of (for example) an AC4CH aluminum alloy. The vehicle wheel 22 includes a rim 91, a hub 97, and spokes 94 that connect the rim 91, and a hub hole 95 is formed in the hub 97.

  The surface layer processing jig 1 shown in FIGS. 1A, 1B, and 6A includes a bottom plate member 62, a holed wall member 61 (main body member), a mounting member 71, a processed material 25, a base member 81, and an edge wall member. 82.

  The bottom plate member 62 includes connection portions 67a, 67b, 67c, and 67d for installing the surface layer processing jig 1 in a surface layer processing apparatus to be described later, and the overall shape of the vehicle wheel 22 (the flange 91b of the rim 91). It is a flat plate having a shape formed by projecting the connecting portions 67a, 67b, 67c, 67d from a slightly larger circle.

  The perforated wall member 61 (main body member) is circumferentially disposed on the bottom plate member 62 (see FIGS. 1A and 6A), and in the perforated wall member 61, a slot 65 (main concave portion) is provided. ) Is formed continuously in a circumferential shape. The slot 65 is inclined so as to be lowered at an angle of approximately 30 ° with respect to a flat bottom plate member 62 (referred to as a horizontal plane) toward the center of the circumference presented by itself (the bottom plate member 62). (Inclination angle θ with respect to (horizontal plane) = 30 °, see FIG. 1B). In other words, the slot 65 has an opening upward toward the outside of the circumference presented by itself. As shown in FIG. 2, when the vehicle wheel 22 is attached to the surface layer processing jig 1, the slot 65 of the perforated wall member 61 is closed by the rim 91 of the vehicle wheel 22, and the slot 65 Is closed into a closed space 26. The workpiece 25 is accommodated in the slot 65 of the perforated wall member 61 that becomes the closed space 26. The workpiece 25 accommodated here collides with a portion of the rim 91 excluding the flange 91b to perform surface layer processing.

  As shown in FIG. 1B, the slot holes of the perforated wall member are inclined with respect to the bottom plate member 62 (horizontal plane), with the slot 65 of the perforated wall member 61 as a representative shape. Furthermore, it is preferable that the surface on which the slot 65 is formed has an arc surface. In the slot 65, in the cross section shown in FIG. 1B, the bottom portion where the processed material 25 accumulates is an arc surface. FIG. 7A to FIG. 7E show another preferred embodiment of the slot provided in the perforated wall member. 7A to 7E are views showing cross sections corresponding to the perforated wall member 61 and the slot 65 in FIG. 1B.

  The attachment member 71 includes a protruding shaft portion 72, a pressing plate portion 73, and a tightening portion 74. The protruding shaft portion 72 is disposed on the bottom plate member 62 at the center of the perforated wall member 61 having a circumferential shape. The vehicle wheel 22 is positioned with respect to the perforated wall member 61 by passing its own hub hole 95 through the protruding shaft portion 72. The pressing plate 73 is formed of a circular plate, and a tightening portion 74 made of a bolt passes through the center of the circle. A screw hole is formed at the tip of the protruding shaft portion 72, and the protruding shaft portion 72 functions as a nut that receives the tightening portion 74. By passing the hub hole 95 of the vehicle wheel 22 through the protruding shaft portion 72, pressing the hub 97 of the vehicle wheel 22 with the pressing plate portion 73, and further tightening with the tightening portion 74, the vehicle wheel 22 has a surface layer. It is fixed to the processing jig 1.

  The pedestal member 81 is a circular pedestal disposed on the bottom plate member 62, and is located at the center (circumferential) of the perforated wall member 61 disposed circumferentially. Provided outside the protruding shaft 72. The pedestal member 81 plays a role of receiving the load of the vehicle wheel 22 at the hub 97 portion.

  The edge wall member 82 is a donut-shaped base disposed on the bottom plate member 62, and is provided on the outer side (circumferential) of the perforated wall member 61 disposed circumferentially. . The edge wall member 82 plays a role of receiving a load at the flange 91 b of the rim 91 of the vehicle wheel 22. Further, the edge wall member 82 has a certain width, the inner peripheral side thereof is inclined (see FIG. 1B), and the flange 91b of the rim 91 of the vehicle wheel 22 is easily fitted (see FIG. 2). ). Therefore, the edge wall member 82 plays a role of positioning the vehicle wheel 22 with respect to the perforated wall member 61 together with the protruding shaft portion 72 of the mounting member 71.

  Further, the edge wall member 82 forms a side groove 66 (corresponding to a sub-recess) between the perforated wall member 61. As shown in FIG. 2, when the vehicle wheel 22 is attached to the surface layer processing jig 1, the side groove 66 is closed and closed by the rim 91 of the vehicle wheel 22 to become a closed space 28. The workpiece 25 is also accommodated in the side groove 66 that becomes the closed space 28. The workpiece 25 accommodated here collides with the flange 91b of the rim 91 to perform the surface layer processing.

  In the above embodiment, when the surface layer processing jig 1 incorporating the vehicle wheel 22 is swung in the vertical direction, the workpiece 25 is formed by the perforated wall member 61 closed by the rim 91 of the vehicle wheel 22. It rotates in the slot 65 (closed space 26) and collides with the surface 91a of the rim 91 of the vehicle wheel 22. When the workpiece 25 collides with the surface 91a of the rim 91 of the vehicle wheel 22, a minute casting defect that may exist on the surface 91a of the vehicle wheel 22 is repaired, and the surface layer 14 of the vehicle wheel 22 is repaired. The existing micro casting defects are crushed and a sealing process is performed (that is, a surface layer processing process is performed).

  Generally, the surface 91a (for example) of the rim 91 of the vehicle wheel 22, which is a cast product formed by a casting method, is a cast surface after casting, in which, as shown in FIG. In many cases, defective holes 12 and protrusions 13 are generated. Further, in the vicinity of the surface 91 a including the surface layer 14, there may be pores 11 that can become holes 12 by appearing on the surface 91 a. Many. As shown in FIG. 4B, when the surface 91a of the rim 91 of the vehicle wheel 22 in which the minute casting defects are present is roughened using a cutting tool, the surface 91a becomes the cutting surface. It becomes. However, there is a hole 12 that was originally a pore 11. Therefore, the workpiece 25 is caused to collide with the surface 91a of the vehicle wheel 22 against the surface 91a of the rim 91 of the vehicle wheel 22 in which such a minute casting defect has newly appeared. Then, as shown in FIG. 4C, the holes 12 that existed on the surface 91a were repaired, and the pores that existed in the surface layer 14 (excluding the surface 91a) from the surface 91a to a depth of about 3 mm. 11 is crushed. When the pores 11 existing in the surface layer 14 are crushed, the cause of the generation of the new hole 12 is removed. Then, as shown in FIG. 4D, when finishing is performed using a cutting tool, the surface 91a becomes a cutting surface in which no minute casting defect exists.

  In the jig for surface layer processing for a vehicle wheel according to the present invention, the work material 25 to be used includes at least a spherical body or a polyhedron having a specific gravity of 2 to 10 and a diameter of φ5 mm or more. When the diameter is less than 5 mm, the action of repairing the minute casting defects existing on the surface 91a is reduced. Moreover, the effect | action which seals the micro casting defect which exists in the vicinity of the surface 91a becomes small, and the range of the surface layer 14 where the pore 11 is crushed becomes narrow. The range of the diameter of the spherical body or polyhedron included in the processed material 25 is preferably φ5 mm or more and φ20 mm or less, and further, the processed material 25 is a spherical body or polyhedron having a diameter of φ5 mm or more and φ20 mm or less. It is preferable to occupy 70% by volume or more.

  And the cutting material 25 can also mix a cut wire, a metal grain, an abrasive | polishing agent or an abrasive | polishing agent, dry sand, etc., and the processing material 25 can also be used as a 2 or more mixture. It is also preferable that the spherical body or polyhedron included in the processed material 25 have different diameters (sizes). By mixing the workpieces of different sizes in the workpiece 25, the workpiece 25 repeats the collision and rubbing movement with respect to the surface 91a of the vehicle wheel 22 more uniformly and without leakage, and is pressed to be applied to the vehicle wheel 22. This is because it is considered that the pores of the surface 91a can be repaired.

  As the processed material 25, for example, a material including a metal sphere or a ceramic sphere is preferably employed. Metal spheres or ceramic spheres may be used alone or in combination. Examples of the metal sphere include a steel sphere and a stainless sphere, and examples of the ceramic sphere include a zirconia sphere and an alumina sphere. From the viewpoint of specific gravity, hardness, and cost, a more preferable metal sphere is a steel ball, and a more preferable ceramic sphere is a zirconia sphere.

  When the cut wire which can be mixed is illustrated as a processed material, the cut wire made from stainless steel of (phi) 0.6-1.2mmx length 0.6-1.2mm can be mentioned. Further, when, for example, a steel ball having a diameter of φ5 mm or more and φ20 mm or less occupies 70% by volume or more with respect to the entire processed material 25, a metal ball or a ceramic ball that can be mixed therewith is φ1 mm or more and less than φ5 mm, and more than φ20 mm and more than φ30 mm. The following steel balls, stainless steel balls, and zirconia balls can be mentioned.

  The input amount of the work material 25 is preferably about 5% or more and 30% or less in volume ratio with respect to the volume of the closed space 26. This is to ensure that the workpiece 25 moves freely in the closed space 26 and the number of collisions between the workpiece 25 and the surface 91a of the vehicle wheel 22 is ensured. If the volume is less than 5% by volume, the workpiece 25 moves freely in the closed space 26. As a result of the workpiece 25 being too small relative to the area of the surface 91a of the vehicle wheel 22, the workpiece 25 is caused by the rotational motion of the workpiece 25. The number of collisions between the wheel 25 and the surface 91a of the vehicle wheel 22 and the applied pressure may not be ensured, and the sealing process of the vehicle wheel 22 may not be performed satisfactorily. If the volume is more than 30% by volume, the range in which the workpiece 25 freely moves in the closed space 26 is limited, and the number of collisions and the applied pressure between the workpiece 25 and the surface 91a of the vehicle wheel 22 are not ensured. There is a possibility that the sealing process of the vehicle wheel 22 may not be performed satisfactorily, which is not preferable.

  The input amount of the work material 25 is preferably about 5% or more and 30% or less in volume ratio with respect to the volume of the closed space 26. This is to ensure that the workpiece 25 moves freely in the closed space 26 and the number of collisions between the workpiece 25 and the surface 91a of the vehicle wheel 22 is ensured. If the volume is less than 5% by volume, the processed material 25 moves freely in the closed space 26. As a result of the amount of the processed material 25 being too small with respect to the area of the surface 91a of the vehicle wheel 22, the processed material 25 is used for the vehicle by rotational movement. It does not collide uniformly with the surface 91a of the wheel 22, and the number of collisions with the surface 91a and the applied pressure may not be secured, and the sealing of the vehicle wheel 22 may not be performed favorably. If the volume is more than 30% by volume, the range in which the workpiece 25 freely moves in the closed space 26 is limited, and the number of collisions and the applied pressure between the workpiece 25 and the surface 91a of the vehicle wheel 22 are not ensured. There is a possibility that the sealing process of the vehicle wheel 22 may not be performed satisfactorily, which is not preferable.

  The workpiece 25 is originally accommodated in a slot 65 that constitutes the closed space 26, and moves in the closed space 26 to swing the rim 91 of the vehicle wheel 22 when swinging in the vertical direction. Although it collides with the surface 91a, when it finishes swinging, it naturally returns to its original position, that is, the state accommodated in the slot 65 by gravity.

  Next, FIG. 8A, FIG. 8B, and FIG. 12A are figures which show other embodiment of the surface layer processing jig | tool for vehicle wheels which concerns on this invention, FIG. 8A is a top view, FIG. It is sectional drawing showing EE cross section in FIG. 8A, and FIG. 12A is a perspective view. 9 and 12B are views showing a state in which a vehicle wheel for a four-wheeled vehicle is incorporated in a surface layer processing jig for a vehicle wheel according to the present invention, and FIG. FIG. 12B is a perspective view in which the left half is partially transparent. FIG. 10 is an enlarged cross-sectional view of a part where the work area is closed with a rim to form a closed space, and a state in which the workpiece moves in the work area is represented by an arrow. FIG. 13A is a cross-sectional view showing a surface of a rim and a part of a surface layer of a vehicle wheel after casting, in which a minute casting defect exists and pores which are defects communicate with each other, causing pressure leakage. The state where the air flow path is formed is shown. FIG. 13B is a cross-sectional view of the surface of the rim and a part of the surface layer after machining the cast vehicle wheel, where the surface is a truly flat surface but air The flow path also appears clearly, and it is shown that the pressure leakage is easier than in the state of FIG. 13A. FIG. 13C is a partial cross-sectional view showing a state in which surface layer processing is performed on the rim of the vehicle wheel using the surface layer processing jig for vehicle wheel according to the present invention. It is a figure for demonstrating the effect | action of.

  9 and 12B, the vehicle wheel 122 incorporated in the vehicle wheel surface layer processing jig 101 has a rim 191 (inner rim 192 and outer rim 193) and a disk 194 (for example) AC4CH. It is an aluminum alloy casting.

  The vehicle wheel surface layer processing jig 101 shown in FIGS. 8A, 8 </ b> B, and 12 </ b> A includes a bottom plate member 162 and an attachment member 171 in addition to the main body member 161 and the processed material 25. The bottom plate member 162 includes a connecting portion for installing the vehicle wheel surface layer processing jig 101 in a vehicle wheel surface layer processing apparatus, which will be described later, and the overall shape of the vehicle wheel 122 (the flange of the rim 191). It is a flat plate having a shape formed by projecting the connection portion from a slightly larger circle. The bottom plate member 162 serves as a base plate for the jig. A substantially cylindrical main body member 161 is disposed on the bottom plate member 162, and an attachment member 171 is disposed at the center of the main body member 161. Established.

  The mounting member 171 is a member for positioning and fixing the vehicle wheel 122 with respect to the main body member 161 when the vehicle wheel 122 is incorporated in the vehicle wheel surface layer processing jig 101. The mounting member 171 includes a projecting shaft portion 172 through which the hub hole of the vehicle wheel 122 passes, a pressing plate portion 173 that presses the vehicle wheel 122 at the hub portion, and a surface layer processing jig for the vehicle wheel 122 for the vehicle wheel. And a tightening portion 174 for tightening to fix to 101.

  Since the projecting shaft portion 172 constituting the mounting member 171 is a portion that communicates with the hub hole of the vehicle wheel 122, one is disposed on the bottom plate member 162 at the position of the central axis of the substantially cylindrical body member 161. Established. The diameter of the protruding shaft portion 172 is determined according to the hub hole of the vehicle wheel 122. When the vehicle wheel 122 is incorporated in the vehicle wheel surface layer processing jig 101, the vehicle wheel 122 passes the hub hole through the protruding shaft portion 172, so that the rim 191 is moved to the work area 165 of the main body member 161. It is positioned so as to close the (main recess).

  The positioned vehicle wheel 122 is pressed by a pressing plate portion 173 made of, for example, a circular plate in accordance with the shape of the hub, and further, for example, by a tightening portion 174 made of a bolt (surface layer for vehicle wheel). Fixed to the processing jig 101). When the tightening portion 174 is a bolt, a screw hole is formed in the protruding shaft portion 172 so that the protruding shaft portion 172 functions as a nut.

  As shown in FIGS. 8B, 9, and 10, the work area 165 is continuously formed by an arc surface (curved surface) that is recessed (dented) from the peripheral surface of the main body member 161 toward the central axis. Yes. Then, as shown in FIG. 9, when the vehicle wheel 122 is attached to the vehicle wheel surface layer processing jig 101, the work area 165 of the main body member 161 is blocked by the rim 191 of the vehicle wheel 122. The work area 165 is closed to become a closed space 126. On the other hand, the workpiece 125 is integrated with the main body member 161 so as to be deeper along the central axis direction of the main body member 161, separately from the work area 165 (main concave portion) of the main body member 161 serving as the closed space 126. It is accommodated in a pocket 166 (sub-recess) formed by the edge wall 182 which is an edge wall.

  The workpiece 25 accommodated in the pocket 166 jumps out from the pocket 166 to the work area 165 by swinging in the vertical direction (refer to the arrow S1 in FIG. 10), and collides with the rim 191 in the work area 165, so that the rim 191 The surface layer is processed. Specifically, when the vehicle wheel surface layer processing jig 101 incorporating the vehicle wheel 122 is swung in the vertical direction, the workpiece 25 is blocked by the rim 191 of the vehicle wheel 122. In the work area 165 (closed space 126) of the member 161, the member 161 starts rotating as a lump and uniformly collides with the surface 191a of the rim 191 of the vehicle wheel 122 (see FIG. 10).

  When the workpiece 25 collides with all the surfaces 191 a of the rim 191 of the vehicle wheel 122, micro casting defects that may exist on the surface 191 a of the vehicle wheel 122 are repaired, and the pores 11 that may exist in the surface layer 114 are crushed. (That is, surface layer processing is performed). In general, as shown in FIG. 13A, a hole 12 and a protrusion 13 are formed on the surface 191a of the rim 191 of the vehicle wheel 122 which is a cast product formed by a casting method, as shown in FIG. 13A. In addition, in the vicinity of the surface 191 a including the surface layer 114, there may be pores 11 that can become pores 12 by appearing on the surface 191 a. Furthermore, there is a case where the communication hole 15 is formed through the rim 191 due to the communication of the pores. On the other hand, when the vehicle wheel 122 is machined (for example, cut) to make the surface 191a flat, as shown in FIG. 13B, the holes 12 and protrusions that existed on the surface 191a. Although the portion 13 is removed, the pores 11 existing in the surface layer portion 114 are present as they are, and the communication holes 15 appear more clearly than before machining, and pressure leakage is more likely to occur. When the workpiece 25 is made to collide with the surface 191a of the rim 191 of the vehicle wheel 122 as shown in FIG. 13C, unlike the shot peening process, the holes 12 and 12 existing on the surface 191a The protrusion 13 is smoothly repaired, and the pores 11 existing in the surface layer 114 (excluding the surface 191a) from the surface 191a to a depth of about 3 mm are crushed. When the pores 11 existing in the surface layer 114 are crushed, the cause of the generation of new holes 12 and protrusions 13 is removed. Further, the communication hole 15 is closed at the surface layer 114 and does not penetrate the rim 191, so that pressure leakage from the tire does not occur.

  The workpiece 25 is originally accommodated in a pocket 166 positioned below the work area 165 that constitutes the closed space 126, and when swinging in the vertical direction, the workpiece 25 jumps into the closed space 126 and is closed. It rotates in the space 126 and collides with the surface 191a of the rim 191 of the vehicle wheel 122, but when it finishes swinging, it naturally returns to its original position, that is, the state accommodated in the pocket 166. In addition, what can be used as the processed material 25 is the same as that of the case of one above-mentioned embodiment.

  Next, a surface layer processing apparatus for a vehicle wheel according to the present invention will be described. The vehicle wheel surface layer processing apparatus according to the present invention includes the above-described surface layer processing jig and swinging means for swinging the surface layer processing tool in the vertical direction. FIG. 3A is a top view showing an embodiment of a surface layer processing apparatus for a vehicle wheel according to the present invention. FIG. 3B is an A arrow view (front view) in FIG. 3A, and the oscillating body 23 is depicted only in FIG. 3B. The rocked body 23 is attached to the surface layer processing jig 1 (see FIG. 1B) including the bottom plate member 62, the perforated wall member 61, the mounting member 71, the processed material 25, the base member 81, and the edge wall member 82. The vehicle wheel 22 that is the target of the surface layer processing is incorporated (see FIG. 2). FIG. 3B shows a state in which the surface layer processing jig 1 is fixed on the swing plate 42 and the vehicle wheel 22 is incorporated in the surface layer processing jig 1. FIG. 3C is a view (right side view) as viewed in the direction of arrow B in FIG. 3A, and shows a swing mechanism (described later) except for the vibration suppressing weight 24. With such a surface layer processing apparatus 2, the vehicle wheel 22 (swinged body 23) incorporated in the surface layer processing jig 1 can be swung in the vertical direction.

  In the surface layer processing apparatus 2 shown in FIGS. 3A to 3C, the power applied to the swing is given by the prime mover 36. The rotational motion generated by the prime mover 36 is transmitted to the rotating shaft 40 by the belt 35 which is a conductive member, and is rotated. The rotating motion of the rotating shaft 40 is converted into a reciprocating motion by a crank 38 provided therein. The swing plate 42 connected to the crank 38 via the connecting rod 41 is linearly reciprocated in the vertical direction along four linear bearings 43a, 43b, 43c, 43d provided as linear motion guides. The oscillating body 23 fixed on the oscillating plate 42 oscillates in the vertical direction by the reciprocating motion of the oscillating plate 42. The counterweight 32 is attached to the other crank 39 provided in the rotating shaft 40, and counteracts and suppresses the bad vibration generated by the reciprocating motion of the rocking plate 42 and the rocking of the rocked body 23.

  In the surface layer processing apparatus 2, the swinging means includes a prime mover 36, a rotating shaft 40 (cranks 38, 39), a connecting rod 41, a swing plate 42, linear bearings 43a, 43b, 43c, 43d (linear motion guides), and A rocking mechanism having a counterweight 32 is provided, and the rocking mechanism is placed on a base 53 via a base plate 33. That is, the swing mechanism is placed together on the base plate 33, and the base plate 33 is placed on the base 53. Under the base 53, four air springs 31 are provided for vibration isolation, and above the base 53, two vibration suppression weights 24 are provided directly above the air spring 31. In the surface layer processing apparatus 2, one vibration suppressing weight 24 is provided corresponding to the two air springs 31.

  In the surface layer processing apparatus 2, the natural frequency associated with the swing can be lowered by the air spring 31 and the vibration suppression weight 24 provided immediately above the air spring 31, and the load is averaged by correcting the offset load of the swing mechanism. It is possible. Therefore, it is possible to suppress the influence of bad vibrations on the oscillating body 23 including the vehicle wheel 22 and the apparatus itself.

  Two bearings 45 are attached to the base plate 33, and the rotary shaft 40 is rotatably attached in parallel to the base plate 33 by the two bearings 45. The rotating shaft 40 is connected to the prime mover 36 (rotating shaft thereof) via the belt 35. Specifically, a pulley 37 provided on the prime mover 36 (rotary shaft thereof) and a pulley 34 provided on the rotational shaft 40 are connected by a belt 35, and the rotational motion generated by the prime mover 36 is converted into the rotational shaft. 40. Along with the rotation control of the prime mover 36 by the inverter, the rotation speed of the rotary shaft 40 can be controlled by changing the diameters of the pulleys 34 and 37. By controlling the number of rotations, the number of oscillations (frequency) applied to the reciprocating motion of the oscillation plate 42 (that is, oscillation of the oscillating body 23) can be controlled.

  The swing plate 42 to which the surface layer processing jig 1 is fixed is configured as a flat plate that is easy to use and excellent in applicability, and is movably attached to the four linear bearings 43a, 43b, 43c, and 43d. ing. The linear bearing is one of linear motion guides, and is a bearing using, for example, balls or rollers for guiding a swing plate that performs reciprocal motion.

  The rotating shaft 40 is provided with two cranks 38, 39 facing in opposite directions by 180 °. The crank 38 is connected to the swing plate 42 via a connecting rod 41, while the counter weight 32 is attached to the crank 39. According to such an aspect of the cranks 38 and 39, the rotational motion given by the prime mover 36 is converted into a reciprocating motion in the vertical direction of the swing plate 42 connected to the crank 38 and fixed to the swing plate 42. The surface layer processing jig 1 (oscillator 23) incorporating the vehicle wheel 22 swings in the vertical direction while suppressing adverse vibrations. Then, the workpiece 25 collides with the surface 91a of the rim 91 of the vehicle wheel 22 at once by the swinging, and repairs the defect of the surface 91a (performs a sealing process).

  In the vehicle wheel surface layer processing apparatus 2, the counterweight 32 is attached to the crank 39 that is not connected to the swing plate 42 via the connecting rod 41 of the cranks 38 and 39, and this serves as a balancer. Since the adverse vibration is canceled, the working environment is improved and the influence on the environment around the factory is reduced. In addition, since the burden on the vehicle wheel 22 incorporated in the surface layer processing jig 1 that is the oscillating body 23 is reduced, the effect of the surface layer processing on the vehicle wheel 22 can be reliably expected. Furthermore, since the burden on the device itself is reduced, the frequency of maintenance of the device is reduced.

  FIG. 11 is an arrow view (front view) of the surface layer processing apparatus for a vehicle wheel corresponding to FIG. 3B, in which the oscillating body 123 is depicted instead of the oscillating body 23 in FIG. 3B. . The rocking body 123 includes a vehicle wheel 122 that is an object of surface layer processing, on a surface layer processing jig 101 for a vehicle wheel that includes a bottom plate member 162, a main body member 161, a mounting member 171, and a processing material 25. It is incorporated (see FIG. 9). In FIG. 11, the vehicle wheel surface layer processing jig 101 is fixed on the swing plate 42, and the vehicle wheel 122 is incorporated in the vehicle wheel surface layer processing jig 101. Is represented. As in the case of the vehicle wheel surface layer processing apparatus 2 described above, the vehicle wheel incorporated in the vehicle wheel surface layer processing jig 101 by such a vehicle wheel surface layer processing apparatus 102. The surface layer processing process can be performed on the surface 191a of the rim 191 of the vehicle wheel 122 by swinging the 122 (swinged body 123) vertically (see FIGS. 13A to 13C).

  Next, the swinging condition will be described taking the case of the surface layer processing apparatus 2 for a vehicle wheel as an example. Using the surface layer processing apparatus for a vehicle wheel according to the present invention that includes the surface layer processing jig for a vehicle wheel according to the present invention, a preferable vibration when performing the surface layer processing on the vehicle wheel. The dynamic conditions are as follows.

  It is preferable that the frequency in the vertical swing is approximately 3 Hz to 30 Hz. A more preferable frequency is 5 Hz to 20 Hz, and a particularly preferable frequency is 8 Hz to 15 Hz. This is because the number of collisions per unit time between the workpiece 25 and the surface 91a of the rim 91 of the vehicle wheel 22 is ensured. If the vibration frequency is less than 3 Hz, the number of collisions between the workpiece 25 and the surface 91a of the vehicle wheel 22 is not secured, the minute casting defects on the surface 91a of the vehicle wheel 22 cannot be repaired, and the vicinity of the surface 91a ( The surface casting 14) is not preferable because it does not crush the micro casting defects. Further, although depending on the number of workpieces 25, even if the frequency is higher than 30 Hz, the effect of repairing or crushing a minute casting defect is small, and the energy-related effect spent for increasing the frequency is reduced, which is not preferable. . In the present specification, the frequency refers to the number of oscillations repeated per hour, and the unit is Hertz (Hz).

  In addition, the swing width when swinging in the vertical direction is preferably approximately 10 mm to 120 mm. A more preferable swing width is 20 mm or more and 100 mm or less, and a particularly preferable swing width is 30 mm or more and 80 mm or less. This is to ensure the number of collisions per unit time between the workpiece 25 and the surface 91a of the rim 91 of the vehicle wheel 22 by appropriately setting the movement range of the workpiece 25 in the closed space 26. If the swaying width is less than 10 mm, the number of collisions between the workpiece 25 and the surface 91a of the vehicle wheel 22 is not ensured, and the minute casting defect of the vehicle wheel 22 cannot be repaired or crushed, which is not preferable. Further, even if the swinging width is larger than 120 mm, the processed material 25 forms the substantial part (slot 65 (main recess)) of the perforated wall member 61 (main body member forming the main recess) in which the slot 65 is formed. The contact time between the workpiece 25 and the surface 91a of the rim 91 of the vehicle wheel 22 does not increase, and the effect of repairing or crushing a minute casting defect is not great. The closed space 26 is desirably formed so that its vertical length (closed space height) is 30 to 200 mm.

  Furthermore, the total swing time when swinging in the vertical direction is preferably approximately 10 seconds to 3 minutes. A more preferable swing time is 20 seconds or more and 2 minutes or less. This is to ensure the total number of collisions between the workpiece 25 and the surface 91a of the rim 91 of the vehicle wheel 22. If the total swing time is less than 10 seconds, the total number of collisions between the workpiece 25 and the surface 91a of the vehicle wheel 22 is not secured, and the minute casting defects of the vehicle wheel 22 cannot be repaired or crushed, which is not preferable. Further, even if the total oscillation time is longer than 3 minutes, the effect of repairing or crushing the minute casting defect is small, and the time effect is not improved.

  As described above, the preferable range of the rocking condition in the surface processing apparatus for a vehicle wheel surface layer according to the present invention is such that the vibration frequency (in the vertical direction) is 3 Hz or more and 30 Hz or less. The rocking time is 10 seconds or more and 3 minutes or less. These ranges indicate that the vehicle wheel surface layer processing apparatus according to the present invention can swing in the vertical direction so that the vehicle wheel rim surface can be processed at once (without changing the arrangement). It is based on what is going on. That is, the optimal swing condition is different between horizontal swing and vertical swing, and the vehicle wheel surface layer processing apparatus according to the present invention has the optimal swing by vertical swing. We have found and proposed dynamic conditions.

  In addition, the surface layer processing jig for a vehicle wheel according to the present invention and the vehicle wheel including the same according to the present invention, which have the above-described surface layer processing jig 1, 101 and the surface layer processing apparatus 2, 102 as embodiments. The surface layer processing apparatus can be manufactured by processing a steel plate and combining with commercially available members. In production, the size, material, and mechanical strength (for example, the diameter and material of the rotating shaft) of each component are determined appropriately according to the swing conditions and the specifications of the vehicle wheel to be processed. It is preferable.

  The surface layer processing jig for a vehicle wheel according to the present invention efficiently repairs a minute casting defect generated on a surface layer of a rim of a vehicle wheel that is a cast product made of a light alloy, and prevents pressure leakage when a tire is mounted. It can be used as one means for preventing. The jig for surface layer processing for a vehicle wheel according to the present invention makes it possible for the first time to repair a minute casting defect (surface layer processing) as one step in a mass production process.

  The vehicle wheel surface layer processing apparatus according to the present invention includes the vehicle wheel surface layer processing jig according to the present invention, and swings the vehicle wheel incorporated therein in the vertical direction to It can be suitably used as a means for performing layer processing.

It is a top view which shows one Embodiment of the jig | tool for surface layer processing for vehicle wheels which concerns on this invention. It is sectional drawing showing DD section in FIG. 1A. 1 is a view showing one embodiment of a surface layer processing jig for a vehicle wheel according to the present invention, in which a vehicle wheel for a motorcycle is incorporated in the surface layer processing jig for a vehicle wheel according to the present invention. It is sectional drawing showing the state. It is a top view which shows one Embodiment of the surface layer processing apparatus of the wheel for vehicles which concerns on this invention. It is A arrow directional view (front view) of the surface layer processing apparatus shown by FIG. 3A (the to-be-oscillated body is drawn). It is a B arrow line view (right side view) of the surface layer processing apparatus shown by FIG. 3A (The vibration suppression weight is removed). It is a figure which shows one Embodiment of the surface layer processing jig for vehicle wheels which concerns on this invention, and is sectional drawing showing a part of surface and surface layer of a vehicle wheel after casting. It is a figure which shows one Embodiment of the surface layer processing jig for vehicle wheels which concerns on this invention, and is carrying out rough processing to the rim | limb of the vehicle wheel, and a part of surface and surface layer of the vehicle wheel FIG. It is a figure which shows one Embodiment of the surface layer processing jig for vehicle wheels which concerns on this invention, and when the surface layer processing process is performed to the rim | limb of a vehicle wheel, the surface and surface layer of a vehicle wheel It is sectional drawing showing a part. It is a figure which shows one Embodiment of the surface layer processing jig for vehicle wheels which concerns on this invention, and when the finishing process is given to the rim | limb of the vehicle wheel, the surface of a vehicle wheel and a part of surface layer FIG. It is a top view which shows an example of the wheel for vehicles. It is sectional drawing which shows CC cross section in FIG. 5A. It is a perspective view showing one embodiment of a jig for surface layer processing for vehicles wheels concerning the present invention. It is a figure which shows one Embodiment of the surface layer processing jig | tool for vehicle wheels which concerns on this invention, and represented the state which incorporated the vehicle wheel in the surface layer processing jig | tool for vehicle wheels which concerns on this invention. It is a perspective view (the wheel for vehicles was shown translucent). It is a figure which shows other embodiment of the surface layer processing jig | tool for vehicle wheels which concerns on this invention, and is sectional drawing which shows the preferable aspect of the slot (main recessed part) which a perforated wall member (main body member) has. . It is a figure which shows other embodiment of the surface layer processing jig | tool for vehicle wheels which concerns on this invention, and is sectional drawing which shows the preferable aspect of the slot (main recessed part) which a perforated wall member (main body member) has. . It is a figure which shows other embodiment of the surface layer processing jig | tool for vehicle wheels which concerns on this invention, and is sectional drawing which shows the preferable aspect of the slot (main recessed part) which a perforated wall member (main body member) has. . It is a figure which shows other embodiment of the surface layer processing jig | tool for vehicle wheels which concerns on this invention, and is sectional drawing which shows the preferable aspect of the slot (main recessed part) which a perforated wall member (main body member) has. . It is a figure which shows other embodiment of the surface layer processing jig | tool for vehicle wheels which concerns on this invention, and is sectional drawing which shows the preferable aspect of the slot (main recessed part) which a perforated wall member (main body member) has. . It is a top view which shows other embodiment of the jig | tool for surface layer processing for vehicle wheels which concerns on this invention. It is sectional drawing showing the EE cross section in FIG. 8A. It is a figure which shows other embodiment of the surface layer processing jig for vehicle wheels which concerns on this invention, and represents the state which incorporated the vehicle wheel for four-wheeled vehicles in the surface layer processing jig for vehicle wheels. It is a figure, the right half is sectional drawing, and the left half is the side view which saw through a part. It is a partial expanded sectional view which shows other embodiment of the jig | tool for surface layer processing for vehicle wheels which concerns on this invention. FIG. 8 is a front view of another embodiment of a vehicle wheel surface layer processing apparatus according to the present invention (a swinging body is depicted); It is a perspective view which shows other embodiment of the jig | tool for surface layer processing for vehicle wheels which concerns on this invention. It is a figure which shows other embodiment of the surface layer processing jig | tool for vehicle wheels which concerns on this invention, and represented the state which incorporated the vehicle wheel in the surface layer processing jig | tool for vehicle wheels which concerns on this invention. It is a perspective view (the wheel for vehicles was shown translucent). It is sectional drawing showing the surface of the rim | limb of the vehicle wheel after casting, and a part of surface layer. It is a figure which shows other embodiment of the surface layer processing jig for vehicle wheels which concerns on this invention, The surface and surface layer of a vehicle wheel after giving machining (cutting) to the rim of the vehicle wheel It is sectional drawing showing a part of. It is a figure which shows other embodiment of the surface layer processing jig for vehicle wheels which concerns on this invention, and when the surface layer processing process is performed to the rim | limb of a vehicle wheel, the surface and surface layer of a vehicle wheel It is sectional drawing showing a part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Surface layer processing jig, 2 Surface layer processing apparatus, 11 Pore, 12 Hole part, 13 Protrusion, 14 Surface layer, 22 Vehicle wheel, 23 Oscillator, 24 Vibration suppression weight, 25 Work material, 26, 28 Closed space, 31 Air spring, 32 Counterweight, 33 Base plate, 34, 37 Pulley, 35 Belt, 36 Motor, 38, 39 Crank, 40 Rotating shaft, 41 Connecting rod, 42 Swing plate, 43a, 43b, 43c, 43d Linear bearing, 45 bearing, 53 base, 61 perforated wall member (main body member), 62 bottom plate member, 65 groove hole (main recessed portion), 66 side groove (sub recessed portion), 67a, 67b, 67c, 67d connecting portion, 71 Mounting member, 72 Projection shaft part, 73 Presser plate part, 74 Fastening part, 81 Base member, 82 Edge wall member, 91 Rim, 91a (Rim of vehicle wheel ) Surface, 91b flange (of vehicle wheel rim), 94 spoke, 95 hub hole, 97 hub, 101 surface layer processing jig for vehicle wheel, 102 surface layer processing device for vehicle wheel, 114 surface layer, 122 Wheel for vehicle, 123 Swing body, 126 Closed space, 161 Main body member, 162 Bottom plate member, 165 Work area (main recess), 166 Pocket (sub recess), 171 Mounting member, 172 Projection shaft, 173 Press plate, 174 tightening portion, 182 edge wall portion, 191 rim, 191a (surface of vehicle wheel rim), 192 inner rim, 193 outer rim, 194 disc.

Claims (2)

A jig used for processing a surface layer of a rim opposite to a side on which a tire is mounted in a vehicle wheel,
A body member having a columnar shape or a cylindrical shape, and a processed material,
The main body member having a columnar shape or a cylindrical shape has a main recess formed on the peripheral surface thereof with a curved surface that is recessed from the peripheral surface toward the central axis, and the main recess attaches the vehicle wheel. And is closed by a rim of the vehicle wheel so that the work material is rotationally moved, and is provided as a circumferential closed space,
The processing material is housed in the main recess, and the processing material has a specific gravity of 2 to 10 and a spherical layer or polyhedron having a diameter of φ5 mm to φ20 mm. A surface of a vehicle wheel comprising: the surface wheel processing jig for a vehicle wheel according to claim 1; and a swinging means for swinging the surface layer processing jig for the vehicle wheel vertically. Layer processing equipment.