JP6488263B2 - Surface processing apparatus and surface processing method for building bar-shaped hardware - Google Patents

Description

  The present invention relates to a surface processing apparatus and a surface processing method for performing fine uneven processing on a bar-shaped peripheral surface of a bar-shaped metal object for construction, and in particular, it is uniform over substantially the entire length of a bar-shaped integrated metal object having a shaft length exceeding 2 m. The present invention relates to a surface processing apparatus for performing a surface treatment including uneven processing. In addition, the present invention relates to a surface processing method for performing fine uneven processing on a bar-shaped peripheral surface of a bar-shaped hardware for construction, and in particular, a long bar-shaped integrated metal object having an axial length exceeding 2 m is used as a processing object or an axial length. A surface made of a uniform concavo-convex process over almost the entire rod-shaped peripheral surface of the workpiece or primary processed body, which is a primary processed body before cutting the workpiece, with a long bar-shaped monolithic piece exceeding 2 m. The present invention relates to a surface processing method for performing treatment.

  Conventionally, regarding the surface treatment means for metal western tableware and the vintage feeling forming means for metal western tableware, the surface of the metal western tableware is not discontinuous by using the dents and irregularities generated by the abrasive used in barrel polishing. The thing which forms an uneven surface and an uneven pattern uniformly is disclosed (refer patent document 1). In this forming means, the barrel polishing is selected from rotary barrel polishing, vibration barrel polishing, centrifugal flow barrel polishing, and the like. It is assumed that a particulate abrasive, compound, water, or the like having a predetermined size and a predetermined shape is rotated by putting about a half of the capacity of the container and is processed by the flow of the contents.

  On the other hand, as a conventional barrel apparatus, a plating barrel apparatus is disclosed in which a long bar-shaped part in a part storage tank of a barrel is plated by rotating a barrel having an electrode member in an energized state in a plating solution ( Patent Document 2). In this plating barrel device, in particular, a plurality of through-holes are formed on the polygonal cylinder-forming surface of the polygonal cylinder-shaped barrel from a position separated by a predetermined distance from the end of the component storage tank to the center side. A cylinder forming surface shape without a through-hole from the wall surface on both end sides of the storage tank to the predetermined position, and a plurality of plate-like electrode members arranged and fixed inside the cylinder forming surface along the axis of the barrel; Is done. According to this, the lead wire is not damaged, there is no plating failure such as discoloration of the bar-shaped part, and there is no through hole at both ends of the part storage tank, so the center plating thickness of the long bar-shaped part is set Assuming the thickness, the plating thickness at both ends is substantially equal to the plating thickness at the center of the bar-shaped part, and a plating film having a uniform thickness can be obtained on the entire bar-shaped part.

Utility Model Registration No. 3200617 JP 2000-1798 A

Here, when uneven processing is performed on the material surface by a barrel polishing machine, a unique surface texture is obtained when the abrasiveness of each abrasive grain is wide and the size and depth of each uneven processing are slightly different. be able to.
However, in the above-described surface treatment means and vintage feeling forming means, a discontinuous and non-uniform uneven surface or uneven pattern is formed on the entire surface of a small metal material such as a metal tableware. For this reason, when barrel polishing is performed on a long construction rod-shaped metal object having an axial length exceeding 2000 mm, unevenness of the uneven surface or uneven pattern becomes conspicuous, and the uneven surface is formed over the entire surface. Takes a long barrel processing time, and on the other hand, it takes a long barrel processing time to make the uneven processing itself uniform. Had a problem.

  On the other hand, the above-described plating barrel device is devised for surface processing of the long bar-shaped part in the barrel part storage tank, but these contrivances prevent lead wire damage and plating defects. However, in the case where uneven processing is applied to a long part in the component storage tank instead of plating, there is still a problem in uniformity and efficiency of uneven processing on the entire surface.

  Therefore, in the present invention, in the case of performing surface processing with slightly different sizes and depths of each concavo-convex process for a long construction bar-shaped metal fitting having an axial length exceeding 2000 mm, unevenness of the concavo-convex surface or concavo-convex pattern is To provide a surface processing apparatus that can efficiently process long parts, such as forming concavity and convexity surfaces with various depths over the entire surface in a relatively short barrel processing time. Let it be an issue.

  In order to solve the above problems, the present invention takes the following means [1] to [7]. The numbers and symbols described after each term are symbols for understanding the configuration of the embodiment as shown in the drawings, and are not limited to the configuration of the embodiment or the configuration of the embodiment.

[1] The surface processing apparatus of the present invention uses a building bar-shaped hardware that performs surface treatment consisting of uneven processing as a processing object.
It is a surface processing apparatus for building bar-shaped hardware that performs uneven processing over the entire surface of the object to be processed,
A polygonal cylindrical can-shaped barrel (1) capable of accommodating the above-mentioned bar-shaped hardware for construction together with a large number of abrasive grains and polishing water;
A rotational drive device that rotationally drives the barrel in a predetermined direction,
A plurality of protrusions (11) having a flat cross section on one side are provided on each inner surface plate of the barrel (1),
A plurality of pocket spaces (P11, P12,...) For temporarily storing abrasive grains are formed in the inner peripheral portion of the barrel by the one strip surface of the protrusion (11) and the inner surface of the barrel adjacent thereto. Features.

  In the case of the above, since the abrasive particles A temporarily stored by the pocket spaces P11, P12, P13,... Thus, a slightly large polishing property due to the difference in potential energy can be obtained. Thereby, a unique surface texture can be obtained by slightly varying the size and depth of each concavo-convex process. Moreover, since the workability is improved, efficient uneven processing can be performed.

[2] In the surface processing apparatus according to [1],
Each of the plurality of protrusions (11) is a cross-sectional view (a barrel cross-sectional view),
A steeply inclined surface (111) arranged on one side and a gently inclined surface (112) arranged on the other side have a flat mountain-shaped portion connected at the top,
The pocket space (P11, P12,...) Is formed by the one-sided surface comprising the steeply inclined surface (111) and the inner surface of the barrel adjacent thereto.
The barrel rotation drive device is for rotating the barrel above the steeply inclined surface (111),
When the barrel is driven to rotate, it is preferable that the abrasive grains in the barrel slide down on the surfaces of each steeply inclined surface (111) and each gently inclined surface (112) at different timings or dropping speeds.
In the case of the above, when the barrel rotates and the steeply inclined surface (111) faces obliquely upward, a relatively large number of pocket spaces are formed on the one-sided surface side formed on the steeply inclined surface (111). Abrasive grains are temporarily stored, and subsequently, when the barrel further rotates and the inclination angle of the steeply inclined surface (111) becomes downward, it is discharged into the barrel internal space by sliding. The abrasive grains released in this manner fall with a velocity from a relatively high position and strongly collide with the abrasive grains in the lower part of the barrel and the object to be processed, so that a relatively deep recess can be formed.
Further, when the barrel rotates and the gently inclined surface (112) faces obliquely downward, the abrasive grains on the gently inclined surface (112) fall down into the space in the barrel by sliding down on the inclined surface. The abrasive grains falling in this way can form various concave and convex portions with various workability depending on the inclination angle at the time of sliding. Moreover, since the abrasive grains falling by the sliding fall with rolling compared to the abrasive grains caused by the fall, a relatively large recess can be formed. In particular, in the embodiment described later, in the embodiment, the flat mountain-shaped portion of the ridge is a steeply inclined surface arranged on one side which is the rotation direction of the barrel, and the other side which is opposite to the rotation direction of the barrel. A gently inclined surface arranged on the side is connected at the top.

[3] In the surface processing apparatus according to any one of [1] and [2],
The width of the cross-sectional view of the bottom surface, which is the fixed surface of the ridge (11), is smaller than the plate width of each inner surface plate of the barrel (1) and is fixed at a position biased to a specific side of the inner surface plate. preferable.

If it is said thing, each inclined surface by a protrusion and each surface of the polygon which comprises the polygon space inside a barrel will be formed in the space inside a barrel. Since these form the outer peripheral edge of the space inside the barrel at different angles, the abrasive grains and the workpiece to be stored inside are pressed against each surface of these outer peripheral edges and are mixed unevenly, and various ( Unevenness (with non-uniformity) is efficiently applied over the entire surface of the target part.
In particular, in the embodiment described later, the flat mountain-shaped portion of the ridge is arranged on a steeply inclined surface arranged on one side which is the rotation direction of the barrel and on the other side which is opposite to the rotation direction of the barrel. The slanted inclined surface is continuous at the top, and further, the protrusion is a single inner surface plate constituting one side surface of the octagonal section of the barrel. It is fixed at a position shifted to the side. Thereby, in the axial sectional view of the barrel, a relatively large pocket space including a part of the inner surface plate is formed on the gently inclined surface side of the ridge, and adjacent to the steeply inclined surface side of the ridge. A relatively large pocket space including a part of another inner surface plate is formed. Further, these pocket spaces are flatly deformed to one side composed of a gently sloping surface of one ridge, a part of a fixed surface of the ridge, and a steeply inclined surface of another ridge adjacent to the ridge. It is comprised inside the cross-sectional view substantially U-shaped edge.

[4] In the surface processing apparatus according to any one of [1], [2] and [3],
The barrel outer axis has a rotational axis length that is at least three times the representative diameter of the polygonal cross-sectional profile,
It is preferable to generate a co-vibration due to the natural vibration of the barrel forming surface during rotation driving.

In the case of the above, the rotational axis length of the barrel is 3 times or more of the representative diameter of the polygonal cross section, that is, the shaft / diameter ratio is 3 or more in the barrel outer shape, so that co-vibration due to rotation easily occurs. The inner abrasive grains move more irregularly and non-uniformly, and non-uniform concavo-convex processing with different sizes and shapes of the concavo-convex portions over the entire surface becomes possible.
In particular, in the embodiments described later, the rotational axis length of the barrel outer shape is set to be not less than 3 times and not more than 4 times (more specifically, not less than 3.2 times and not more than 3.7 times) the representative diameter of the barrel cross-sectional shape. Thus, by forming a barrel can body having an appropriate ratio of axial length / shaft cross-sectional diameter, it is possible to perform a barrel rotating operation accompanied with polishing efficiency and efficient deformation of the barrel can body. If the rotational axis length of the barrel outer shape is less than three times the representative diameter of the barrel axial cross-sectional profile, the section of the barrel space becomes too small with respect to the space axial length of the barrel space due to the formation of the protrusions. The effect of increasing the polishing efficiency due to vibration cannot be obtained sufficiently. In addition, although the rotational axis length of the barrel outer shape may be four times or more of the representative diameter of the barrel axial cross-sectional shape, a further uniform processing effect is obtained in a relatively short barrel rotating operation of less than 100 minutes. For this purpose, it is preferable that the rotation axis length of the barrel outer shape is four times or more the representative diameter of the barrel axial cross-sectional outer shape.

[5] In the surface processing apparatus according to any one of [1], [2], [3], and [4],
The barrel outer axis of rotation is at least three times the representative diameter of the barrel axial profile,
At least both end plates of the barrel are made of elastic material,
Through a connection bracket that protrudes and is fixed to the outer surface of both end plates,
It is preferable that the rotary shaft is held so that the holding angle can be changed and the holding position can be changed.

In the case of the above, both end plates of the elastic material pulled by the connecting bracket are elastically deformed when the barrel is driven to rotate, and the rotating shaft bar rotates while varying the holding angle or holding position in various ways. . In particular, in the case of a long barrel whose barrel rotation axis length is more than three times the typical diameter of the barrel outer cross section, the cantilever shaft moment caused by the barrel rotation is received by the connecting brackets on both end plates. It will be accompanied by position fluctuation. As a result, not a simple high-speed rotation, but a non-uniform barrel rotation in which the rotation shaft in the barrel is distorted is generated, and the polishing efficiency is improved by applying the non-uniform rotation motion.
In particular, in the embodiments described later, the rotational axis length of the barrel outer shape is set to be not less than 3 times and not more than 4 times (more specifically, not less than 3.2 times and not more than 3.7 times) the representative diameter of the barrel cross-sectional shape. Thus, by forming a barrel can body having an appropriate axial cross-sectional shape, it is possible to perform a barrel rotating operation accompanied with polishing efficiency and efficient deformation of the barrel can body. Thus, by forming a barrel can body having an appropriate ratio of axial length / shaft cross-sectional diameter, it is possible to perform a barrel rotating operation accompanied with polishing efficiency and efficient deformation of the barrel can body. If the rotational axis length of the barrel outer shape is less than three times the representative diameter of the barrel axial cross sectional profile, the section of the barrel space becomes too small relative to the space axial length of the barrel space due to the formation of the ridges. The effect of increasing the polishing efficiency due to the change in the holding angle or holding position of the shaft rod cannot be obtained sufficiently. In addition, although the rotational axis length of the barrel outer shape may be four times or more of the representative diameter of the barrel axial cross-sectional shape, a further uniform processing effect is obtained in a relatively short barrel rotating operation of less than 100 minutes. For this purpose, it is preferable that the rotation axis length of the barrel outer shape is four times or more the representative diameter of the barrel axial cross-sectional outer shape.

[6] The surface processing method of the bar for construction of the present invention is as follows:
Using the surface processing apparatus according to any one of [1], [2], [3], [4], and [5], a surface processing method for performing uneven processing on a bar-shaped peripheral surface of a processing object that is a bar-shaped hardware for construction. Because
A charging step of charging the workpiece, the abrasive, and the polishing liquid into the barrel at a predetermined amount (for example, within a range of 50% to 75%) of the barrel volume ratio;
A barrel rotation step of rotating the barrel (1) at a constant speed for a predetermined time, in order,
The object to be processed is made of a metal rod-like body having an axial length of over 2000 mm, the main material of which is any one of brass, aluminum, and stainless steel.
The space axial length of the barrel space is in the range of 120% to 130% of the axial length of the workpiece.

  According to the inventor's confirmation test, when any one of brass, aluminum, and stainless steel is used as a surface main material, and a metal rod-like body having an axial length of 2000 mm is used as a workpiece, the axial length of the barrel space is It has been confirmed that when the axial length of the workpiece is set in the range of 120% to 130%, efficient surface processing is performed. In particular, when the surface processing apparatus according to any one of the above [4] and [5] is used to perform uneven processing on the rod-shaped peripheral surface of a workpiece that is a bar-shaped hardware for construction, the rotational axis length of the barrel outer shape Becomes more than three times the representative diameter of the polygonal cross-sectional outer shape, and the barrel rotation process involves the co-vibration / rotational shaft rod angle or position variation, so that more efficient surface processing can be performed.

[7] Alternatively, the surface processing method of the building bar-shaped hardware of the present invention,
Using the surface processing apparatus according to any one of [1], [2], [3], [4], and [5], a workpiece of a secondary workpiece obtained by cutting the primary workpiece (bar-shaped hardware for construction) Is a surface processing method for performing uneven processing on the rod-shaped peripheral surface of the primary processed body before cutting processing,
A charging step of charging the primary processed body, the abrasive, and the polishing liquid into the barrel at a predetermined amount (in a range of 50% to 75%) of the barrel volume ratio;
A barrel rotation process in which the barrel is rotated at a constant speed for a predetermined time; and
The primary processed body after the barrel rotating step is taken out from the barrel and cut, and a cutting step for obtaining a secondary processed body of the workpiece is sequentially provided.
The primary processed body of the object to be processed is composed of a metal rod-like body having an axial length of 2000 mm or more, with any one of brass, aluminum, and stainless steel as a surface main material,
The space axial length of the barrel space is in the range of 120% to 130% of the axial length of the workpiece.

  According to the inventor's confirmation test, any one of brass, aluminum, and stainless steel is used as the surface main material, and when the primary processed body having an axial length of 2000 mm or more is a processing target, the space axial length of the barrel space is It has been confirmed that when the axial length of the workpiece is set in the range of 120% or more and 130% or less, efficient surface processing of the primary workpiece is performed. In particular, when the surface processing apparatus according to any one of the above [4] and [5] is used to perform uneven processing on the rod-shaped peripheral surface of a workpiece that is a bar-shaped hardware for construction, the rotational axis length of the barrel outer shape Becomes more than three times the representative diameter of the polygonal cross-sectional outer shape, and the barrel rotation process involves the co-vibration / rotational shaft rod angle or position variation, so that more efficient surface processing can be performed.

  For long building rods with an axial length exceeding 2000 mm, when uneven surface processing is performed with slightly different sizes and depths, uneven surfaces and uneven patterns are inconspicuous, and the entire surface It is possible to provide a surface processing apparatus and a surface processing method capable of efficiently processing long parts, such as forming uneven surfaces of various depths over a relatively short barrel processing time. It was.

The front block diagram of the surface processing apparatus of Example 1 of this invention. AA sectional side view of FIG. Front partial explanatory drawing which shows the external appearance state of the barrel at the time of rotational drive. Cross-sectional explanatory drawing which shows the internal state of the barrel at the time of rotational drive. Comparison photograph of surface processing by each surface processing device when a round bar is the processing object Comparison photograph of surface processing by each surface processing device when a square bar is the object to be processed An enlarged photograph of the surface processing state by the surface processing apparatus of Example 1 when a brass square pipe is the processing object. An enlarged photograph of the surface processed state by the surface processing apparatus of Example 1 when using an aluminum pipe as the processing object An enlarged photograph of the surface processing state by the surface processing apparatus of Example 1 when using a stainless steel round pipe as the processing object

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments for carrying out the present invention will be described below together with respective drawings shown as embodiments. The numbers and symbols described after each term are symbols for understanding the configuration of the embodiment as shown in the drawings, and are not limited to the configuration of the embodiment or the configuration of the embodiment.

(Surface processing equipment)
The surface processing apparatus of the present invention uses a long building bar-shaped metal object having an axial length exceeding 2000 mm as a processing target, and the size and depth of each uneven processing slightly differ over the entire surface of the processing target. Surface processing (that is, consisting of random unevenness processing that is non-uniform in the minimum range) with a certain degree of uniformity over the entire surface (that is, there is no remainder of the surface processing range and there is little shading of the surface processing as viewed from the whole) ) It is supposed to be applied. However, the object to be processed is a long metal bar for construction of a solid metal object molded into a predetermined part shape exceeding an axial length of 2 m, or a predetermined primary workpiece shape exceeding an axial length of 2 m. It is assumed to be formed of a long, bar-shaped integrated metal piece before cutting. When the primary processed body is a processing object, the primary processed body is surface-processed by the surface processing apparatus of the present invention, and then is formed of a secondary processed body having a predetermined cutting size by cutting and subsequent finishing. Metal hardware. Specific examples of the metal hardware for construction include cosmetic hardware such as a handle for a construction door, a handrail for construction, a column (pole), a frame material for a glass wall, and a cap for piping.

As a basic configuration of the surface processing apparatus, a long barrel-shaped processing object (O) having an axial length exceeding 2000 mm has a polygonal barrel space that can be accommodated in a can together with a large number of abrasive grains and polishing water. A rectangular barrel-like barrel (1);
A rotary drive device that rotates the barrel (1) in a specific direction (FIG. 1). Further, in the embodiment, the rotating shaft rod (21) that protrudes and is fixed from both ends of the barrel, the holding bracket (32) that supports the rotating shaft rod, and the rotation driving device that applies driving force to the rotating shaft rod (21), (FIG. 1).

  More specifically, as shown in FIG. 1, the rotary shaft rod (22) is fixed to the center of both end plates (21) that close both ends of the barrel, and is connected to the rotating shaft rod (22) via a connection bracket (21) protruding outward in a partial spherical shape. Protrudes in the axial direction, and the rotary shaft (22) is inserted and held by the holding bracket (32) from below. Furthermore, a sprocket for transmitting rotational force (not shown) is provided at the shaft end of the rotary shaft rod (22) on one side (the right-hand rotary shaft rod in FIG. 1), and the rotating belt portion transmits the rotational driving force to the sprocket. (51) and a rotary drive unit including a rotary motor unit (52) is provided.

As shown in FIGS. 1 to 4, the barrel (1) is formed in a polygonal columnar shape by each inner surface plate constituting the barrel side surface of the polygon (octagon in the embodiment) and both end plates (21) closing both ends thereof. A can-shaped barrel having a barrel space is formed. The barrel (1) has a polygonal barrel side surface with a removable lid (14). The lid part (14) is between four sets of projecting pins (141) projecting in parallel to one direction outside the barrel and in a closed state fitted in the lid space on one side of the polygonal barrel shape, The outer surface of the lid is pressed and fixed by a connecting rod (142) that is inserted through a hole on the front side of each pair of protruding pins (141) (FIGS. 1, 2, and 4). Also, the barrel has an outer diameter with an axis / diameter ratio, that is, an aspect ratio of 3 or more (
As shown in FIG. 3, each inner surface plate on the side surface of the barrel excluding the lid portion 14 is elongated in the longitudinal direction, that is, in the axial direction. On the other hand, it is not straight but involves some degree of bending deformation. Further, coupled with the fact that the both end plates (21) are made of an elastic material, co-vibration occurs due to rotation, thereby improving the polishing efficiency.

  A polishing liquid, a large number of abrasive grains, and an object to be processed (O) are charged into the barrel in a predetermined amount within a range of 50% to 75% of the barrel volume ratio including the object to be processed. The space axial length of the barrel space is set to be in the range of 120% to 130% of the axial length of the workpiece, and more specifically, in the range of 120% to 125% of the axial length of the workpiece. However, the object to be processed is a long rod-shaped body having an axial length exceeding 2000 mm. That is, when the workpiece to be charged has an axial length of 77% to 84%, more specifically 77% to 80% of the axial length of the barrel space, the barrel space with respect to the axial length of the processing target. Is the appropriate ratio for effective surface treatment. That is, in this case, as shown in FIGS. 2 and 4, particularly, as shown in FIG. 2 and FIG. It is fixed so that it protrudes inward one by one. As a result, pocket spaces (P11, P12,...) For temporarily storing abrasive grains are equidistantly spaced from the inner peripheral portion of the barrel by the one strip surface of the protrusion (11) and the inner surface of the barrel adjacent thereto. A plurality are formed. As a result, as shown in FIG. 4, the abrasive grains A are transported upward in the barrel space by the accommodation pocket spaces P11, P12, P13,.

As shown in FIG. 4, this ridge (11) is specifically in a cross-sectional view,
The steep slope 111 and the gentle slope 112 are formed in a flat inclined shape in which they face each other in the relative direction. The steep slope 111 and the gentle slope 112 form a top portion (113). The bottom surface width of the ridge (11) is smaller than the plate width of each inner surface plate of the barrel (1), and is fixed at a position biased to a specific side of the inner surface plate (clockwise direction of each plate in FIG. 4). The A single protrusion is formed on the inner surface of the lid portion 14 as well as the component surface of the barrel.
Also, the entire inside of the barrel is coated with an elastic protective material, so that even if the contents are strongly hit against the inside top, it is difficult to be destroyed by impact.

Both end plates (12) of the barrel are made of an elastic material, and as shown in FIGS. 3 (a) and 3 (b), through a spherical crown-shaped connection bracket fixed to the both end plates,
The rotating shaft rod is held so that the holding angle and holding position can be changed. The holding bracket (32) has an insertion hole for the rotating shaft rod (22), and the holding inner frame is inserted through a through-hole formed on the front side of the rotating shaft rod (22).
As a result, as shown in FIG. 3, when the barrel is rotationally driven, both end plates (12) are elastically deformed by the weight of the barrel and the contents, and the rotation axis of the barrel is curved downward (FIG. 3a) or upwardly curved. (FIG. 3b). At this time, an irregular inertia force in the axial direction is generated inside the barrel, and the irregularities are processed by the internal abrasive grains A moving randomly in the axial direction.

  The holding bracket (32) is supported by a support frame (31) that surrounds both sides or the bottom of the barrel. The support frame (31) further has a frame (4) fixed to the lower part of the frame in order to avoid deformation during driving. The underframe (4) has an inclined base plate (41) inclined downward toward the front, and the mountain-side partial convex portion (42) surrounded by the inclined base surface of the inclined base plate (41) is separated in the axial direction. It is formed. An upper frame (33) surrounds the support frame (31) in a frame shape, and a bracket (34) for transporting the lid (41) is fixed to the upper part of the frame.

  The surface processing apparatus having the above configuration is a barrel-shaped rotary barrel that is long in the axial direction with respect to the diameter, and the rotary shaft can tilt the holding angle, and the holding position is slidable. ) As shown in (b) or the broken line in FIG. 4 (outer barrel shape of reference numeral 1 ′), the side surfaces of the barrel excluding the lid part are slightly deformed downward or upward during rotation. Furthermore, since eight ridges are formed in the inner barrel space, the high-speed abrasive grains that fall after being locked to the ridges and carried to a relatively high position and rolling along the inclined surface fall. When the low-speed rotating abrasive grains are mixed, different polishing phenomena consisting of impact polishing and rotary friction polishing are mixed and performed, and thereby random uneven processing is performed uniformly and efficiently.

(First surface processing method for building bar-shaped hardware of the present invention)
The first surface processing method of the bar-shaped hardware for building of the present invention is a surface processing method for performing uneven processing on the bar-shaped peripheral surface of the processing object that is a bar-shaped metal for building, using the surface processing apparatus,
A charging step of charging the workpiece, the abrasive, and the polishing liquid into the barrel at a predetermined barrel volume ratio within a range of 50% to 75%;
The barrel (1) after loading is rotated in one direction for a predetermined time within a range of 50 minutes to 90 minutes at a constant speed rotation within a range of 30 to 55 rpm, and a concave and convex processing is performed on the rod-shaped peripheral surface of the workpiece. And a barrel rotating step for performing the steps.
The object to be processed is made of a metal rod-like body having an axial length of over 2000 mm, the main material of which is any one of brass, aluminum, and stainless steel.
The space axial length of the barrel space is in the range of 120% to 130% of the axial length of the workpiece.

(Second surface processing method for building bar-shaped hardware of the present invention)
The second surface processing method of the building bar-shaped hardware of the present invention is a processing object of a secondary processed body obtained by cutting the primary processed body using the surface processing apparatus (processing target that is a bar-shaped hardware for building). A surface processing method of performing uneven processing on the rod-shaped peripheral surface of the primary processed body before cutting processing,
A charging step of charging the primary processed body, the abrasive, and the polishing liquid into the barrel at a charging amount of a predetermined barrel volume ratio within a range of 50% to 75%;
The barrel (1) after charging is rotated in one direction for a predetermined time within a range of 50 minutes to 90 minutes at a constant speed rotation within a range of 30 to 55 rpm. A barrel rotation process that performs uneven processing on
The primary process body after a barrel rotation process is taken out from a barrel, it cuts, and the cutting process which obtains the secondary process body of a workpiece is obtained in order.
The primary processed body of the object to be processed is composed of a metal rod-like body having an axial length of 2000 mm or more, with any one of brass, aluminum, and stainless steel as a surface main material,
The space axial length of the barrel space is in the range of 120% to 130% of the axial length of the workpiece.

  As described above, the workpiece or the primary workpiece of the workpiece is made of any one of brass, aluminum, and stainless steel as a surface main material (80% or more by weight of the surface material is composed of the material). ) And a space axial length in the range of 120% or more and 130% or less of the axial length of the workpiece, with a barrel space exceeding 2400 mm. A relatively uniform surface processing can be performed over the axial length of the object from its end to the center. In particular, in addition to the above conditions, when the rotational axis length of the barrel is more than three times the representative diameter of the polygonal section, and in addition to the above conditions, the rotational axis length of the barrel is three times the representative diameter of the polygonal section. In addition, when barrel rotation is performed with vibration in the barrel axis length direction in the barrel rotation process, the influence of surface processing due to movement in the axis direction appears within a reasonable range, and it is efficient and uniform. Surface processing can be performed.

  If the axial length of the barrel space is less than 120% of the axial length of the workpiece, the surface machining of the portion near the axial length end of the workpiece is a portion near the center of the axial length due to the influence of the barrel end surface. Therefore, it becomes excessively more than the surface processing, and the surface processing state becomes non-uniform over the axial length. If the axial length of the barrel space exceeds 130% of the axial length of the workpiece, it takes 100 minutes or more to perform a relatively uniform surface machining over the entire axial length of the workpiece. In other words, efficient surface processing is impossible.

As a specific example, a bar-shaped hardware for construction (including building material products) made of brass, aluminum, and stainless steel is used as a processing object, and the barrel volume ratio is adjusted to a value within a relatively low range of 60% to 75% in surface processing. At the same time, when the barrel rotation speed is adjusted to a value within a relatively low range of 40 rpm to 55 rpm, and the processing time is adjusted to each value within a range of 60 minutes to 90 minutes, the barrel rotation process is performed. By applying the uneven pattern uniformly, it is possible to form a unique net-like cloudy surface treatment with little change in shading over the entire construction hardware (FIGS. 8 and 9). 8 and 9 can prevent the adhesion of fingerprints and is less susceptible to surface scratches and dirt clouding due to aging. There is an advantage that it is not affected by. In addition, an original design having a different expression can be presented by performing electroforming plating processing or painting finish after the net-like cloudy surface processing.

(Comparative test)
In order to confirm the effect of the present invention, a comparison test was conducted between the surface processing by the surface processing apparatus of Example 1 and the surface processing by the surface processing apparatus having no protrusions. FIG. 5 shows a comparison photograph when a round bar made of stainless steel (SUS304) having a diameter of 30 mm and an axial length of 2100 mm is used as a processing target. FIG. 6 shows comparative photographs in the case of the above. In any surface processing, the surface processing apparatus uses an octagonal barrel with a barrel length of 2500 mm and a barrel representative diameter of 700 mm, the charging amount is 55% of the barrel volume ratio, and the surface processing apparatus is rotated at a constant speed of 30 rpm for 90 minutes. It was put into operation.

Comparing the surface photograph of the example of FIG. 5 (a) with the surface photograph of the comparative example of FIG. 5 (b), the surface processing of the example has a greater degree of overall surface processing uniformity, and the processing It is clear that there is little unevenness or reflection unevenness. In the surface processed state according to the embodiment of the present invention shown in FIG. 5 (a), fine spotted flaws are formed in a relatively uniform manner, and all the spotted flaws have a representative diameter of less than 0.6 mm and a flaw depth. It is less than 0.3 mm. In addition, a small amount of line-drawing flaws are dispersed and formed between these point-drawing flaws, and each line-drawing flaw has a length of less than 2.0 mm and a flaw depth of less than 0.1 mm. On the other hand, in the surface processed state according to the comparative example having no protrusions of the present invention shown in FIG. 5B, the fine stippling marks D are formed relatively unevenly distributed. One or more of Ds with a representative diameter exceeding 1.0 mm and those with a scratch depth exceeding 0.5 mm are scattered per 900 mm ² . Further, the line-drawing scratches L formed between these point-drawing scratches D are formed to the same extent or in a larger amount than the point-drawing scratches D, and each line-drawing scratch L has a length exceeding 2.0 mm, Any one of those exceeding the scratch depth of 0.1 mm is found one or more per 900 mm ² . Further, in particular, in FIG. 5B, the unevenness of the surface processing amount is conspicuous, and this causes a reflection unevenness v (based on processing unevenness) which is a dark color region portion at the time of taking a photograph.

Further, even when the surface photograph of the example of FIG. 6A is compared with the surface photograph of the comparative example of FIG. 6B, the difference in uniformity of the overall surface processing is clear. In the surface processed state according to the embodiment of the present invention shown in FIG. 6 (a), the fine stippling marks D are relatively uniformly distributed, and all the stippling marks have a representative diameter of less than 0.6 mm and a flaw depth. The thickness is less than 0.3 mm. In addition, a small amount of line-drawn scratches L are distributed between these point-drawn scratches D, and each line-drawn scratch L has a length of less than 1.0 mm and a wound depth of less than 0.05 mm. Yes. On the other hand, in the surface processed state by the surface processing apparatus of the comparative example using the barrel having no protrusions as shown in FIG. 6B, the fine stippling marks D are relatively non-uniformly distributed. In addition, one or more of the stippling scratches D each having a representative diameter exceeding 1.0 mm or a scratch depth exceeding 0.5 mm is found per 900 mm ² . Further, the line-drawing scratches L formed between these point-drawing scratches D are formed to the same extent or in a larger amount than the point-drawing scratches D, and each line-drawing scratch L has a length exceeding 2.0 mm, Any one of those exceeding the scratch depth of 0.1 mm is found one or more per 900 mm ² . In particular, in FIG. 6B, the non-uniformity of the surface processing amount is conspicuous, and this causes a reflection unevenness v (based on the processing unevenness) that is a dark color region portion at the time of photographing.

  Examples of the surface processing state by the surface processing apparatus according to the first embodiment of the present invention are shown in FIGS. 7, 8, and 9, respectively. 7 is a brass square pipe with a side of 35 mm and an axial length of 2100 mm, FIG. 8 is an aluminum round pipe with a diameter of 30 mm and an axial length of 2100 mm, and FIG. 9 is a stainless steel (SUS304) round pipe with a diameter of 30 mm and an axial length of 2100 mm. It is a thing.

  In FIG. 7, the charged amount is set to 50% barrel volume, and the operation is performed at a relatively large constant speed of 50 rpm in a relatively short time of 60 minutes. The different types of crest-like scratches are randomly formed. In particular, as compared with the embodiment shown in FIGS. 5 and 6, a large amount of line-drawn scratches L are formed, and a thin spot-drawn scratch D <b> 2 composed of a very shallow collision dent is formed in a larger amount than the line-drawn scratches L. Further, the line-drawing scratch L is formed as a finely drawn pattern with higher accentability by being formed with a relatively long average length of 1.8 mm and an uneven portion due to continuous stippling.

  In FIG. 8, the charging amount is 60% barrel volume ratio, and the operation is performed at a constant speed of 40 rpm in a relatively short time of 60 minutes, so that the dark spot flaw D1, the thin spot flaw D2, and the line flaw L are different. It is a randomly formed type of crested wound. In particular, as compared with the embodiment with a relatively small charging amount and rotational speed as shown in FIG. 5 and FIG. 6, a large amount of fine line-scratching L is formed, and a thin-spot marking D2 consisting of a very shallow impact dent is formed. It is a unique net-like cloudy surface treatment formed in a large amount with the line-scratch L and identification or more. In addition, each of the dark spot flaws D1 and the thin spot flaws D2 is formed in a very small and nearly circular shape with a representative diameter of 0.10 mm or less, thereby forming a finer pattern with higher uniformity. . In particular, the surface processing is such that fingerprints are not conspicuous and surface processing with little change even when it deteriorates over time can be uniformly applied to a long-sized object.

  In FIG. 9, the charged amount is set to 75% barrel volume ratio, and the operation is performed with a relatively large constant speed rotation of 55 rpm in a time exceeding 60 minutes, that is, 90 minutes. Different types of striated scratches such as line drawing scratches L are formed at random. In particular, a fine line drawing compared to the embodiment with a relatively small amount of charge and the number of revolutions as shown in FIGS. 5 and 6, or the embodiment with a slightly large amount of charge and the number of revolutions as shown in FIG. A very large amount of scratches L are formed, and a thin spot-drawn scratch D2 consisting of a very shallow collision dent is formed in a larger amount than the line drawing scratch L, resulting in a unique net-like cloudy surface treatment. In addition, both the dark spot flaw D1 and the light spot flaw D2 are formed in a very small and nearly circular shape with a representative diameter of 0.06 mm or less, thereby forming a more uniform sketch pattern. . In particular, the surface processing is such that fingerprints are not conspicuous and surface processing with little change even when it deteriorates over time can be uniformly applied to a long-sized object.

  Adjusting the barrel volume ratio to a value in the range of 50% to 75% using different workpieces as in FIGS. 7-9, adjusting the barrel rotation speed to a value in the range of 30 rpm to 55 rpm, and By adjusting the processing time to each value within the range of 50 minutes to 90 minutes, unique designs having various expressions can be presented. In particular, when performing surface processing with slightly different sizes and depths of each unevenness, unevenness of uneven surfaces and uneven patterns is not noticeable, and uneven surfaces with various depths are processed over the entire surface. It can be formed in a relatively short barrel processing time of 90 minutes or less. Even when a long part with an axial length of 20000 mm is used as the object to be processed, not only a product composed of a long part but also a long part as a semi-finished product can be cut and processed. It is possible to produce a large amount of short processed parts that have been surface processed.

In particular, one of the brass, aluminum, and stainless steel bar-shaped hardware for construction (including building material products) is the object to be processed, and the barrel volume in the total charging of the object to be processed, abrasive and polishing liquid into the barrel. The ratio is adjusted to a value within a relatively high range of 60% to 75%, the barrel rotation speed is adjusted to a value within a relatively high range of 40 rpm to 55 rpm, and the processing time is set to 60 minutes to 90 minutes. The barrel rotation process is carried out by adjusting each value within the range, and by repeatedly colliding from the height of the abrasive based on the plurality of protrusions formed inside the barrel, the uneven pattern is uniformly applied, and the entire construction hardware In addition, a unique net-like cloudy surface treatment with little change in shading can be formed (FIGS. 8 and 9). Such a net-like cloudy surface treatment can prevent the adhesion of fingerprints and is not affected by surface scratches or dirt clouding over time, so it is not affected by surface deterioration due to long-term use. There is an advantage.

  In addition to various objects to be processed, various shapes such as various plate bodies / round pipe bodies / square pipe bodies / deformed pipes / round bars / square bars / deformed bars, or various materials such as cast products / forged products Can be used. In addition, a unique design with a different expression can be exhibited by performing die casting / lost wax processing, plating, or paint finishing after processing.

  In particular, in the case of an object to be processed consisting of a square pipe having a square cross section or a round pipe having a true circular cross section, the size and depth of each concavo-convex process over the entire axial position of the pipe peripheral surface by the surface processing method of the present application. Slightly different surface processing (ie, consisting of random unevenness processing that is non-uniform in the minimum range) with a certain degree of uniformity over the entire surface (that is, there is no remaining surface processing range and the overall surface processing is light and shaded) (As few as possible).

  The surface processing apparatus or surface processing method of the present invention is as described above. However, the present invention is not limited to the embodiment described above, and technical elements are appropriately extracted and partially deleted without departing from the spirit of the present invention. It is possible to replace with another known configuration, or to change the shape and the set value at the time of processing. For example, the barrel rotation may be operated at a variable speed instead of a constant speed, the barrel rotation direction may be alternately operated in both forward and reverse directions, and the cross-sectional shape of the ridge is a flat fan shape on one side, It is also possible to use an arc shape, a flattened trapezoidal shape, a barrel can shape of a barrel, a hexagon, a pentagon, a pentagon, a combination of different ridges, or a reduction in the number of ridges.

(1) Barrel (11) Projection (P11, P12, ...) Pocket space (111) Steeply inclined surface (112) Slightly inclined surface (113) Top (31) Support frame (32) Holding bracket (34) Bracket (4) Base frame (41) Inclined base plate (42) Partial convex part

Claims (7)

It is a surface processing apparatus for building bar-shaped hardware that performs surface treatment consisting of uneven processing,
A polygonal cylindrical can-shaped barrel capable of accommodating the above-mentioned bar-shaped hardware for construction together with a large number of abrasive grains and polishing water;
A rotational drive device that rotationally drives the barrel in both forward and reverse directions,
Each inner surface plate of the barrel is provided with a plurality of ridges having a flattened one-sided cross-sectional shape, which has a shape biased to a specific one side in the same direction as the rotation direction in the barrel axis cross-sectional view.
A plurality of pocket spaces for temporarily storing abrasive grains are formed in the inner peripheral portion of the barrel by the one surface of the protrusion and the inner surface of the barrel adjacent thereto.
Each of the plurality of protrusions is a sectional view,
It has a flat mountain-shaped portion in which a single strip surface composed of a steeply inclined surface arranged on one side and a single strip surface composed of a gently inclined surface arranged on the other side are continuous at the top,
The pocket space is formed by the one strip surface composed of the steeply inclined surface and the inner surface of the barrel adjacent thereto,
Different pocket spaces are formed by the one-sided surface composed of the gently inclined surface and the inner surface of the barrel adjacent thereto,
When the barrel is driven to rotate, the abrasive grains in the barrel have different timings on the steeply inclined surface and the gently inclined surface on each steeply inclined surface and each gently inclined surface, or on the steeply inclined surface and the gently inclined surface. A surface processing apparatus that slides at a falling speed different from that of an inclined surface. The rotational drive device is for rotating the barrel in both forward and reverse directions,
Each of the plurality of protrusions is a sectional view,
A single strip surface consisting of a steeply inclined surface arranged on one side which is the forward rotation direction of the barrel, and a single strip surface consisting of a gentle inclination surface arranged on the other side which is the reverse rotation direction of the barrel; Has a flat chevron shaped at the top,
The pocket space when rotating in the forward direction is formed by the one strip surface comprising the steeply inclined surface and the inner surface of the barrel adjacent thereto,
The pocket space at the time of rotating in the reverse direction is formed by the one strip surface comprising the gently inclined surface and the inner surface of the barrel adjacent to the one strip surface,
The rotary drive device drives the barrel to rotate in the positive direction above the steeply inclined surface,
The surface processing apparatus according to claim 1, wherein the rotational driving device is configured to rotationally drive the barrel in a reverse direction above the gently inclined surface . The cross-sectional view width of the bottom surface that is the fixed surface of the ridge is smaller than the plate width of each inner surface plate of the barrel, and is fixed to a position that is biased to a specific one side of the inner surface plate,
The flat mountain-shaped portion of the ridge has a steeply inclined surface arranged on one side which is the rotation direction of the barrel, and a gently inclined surface arranged on the other side which is opposite to the rotation direction of the barrel. It is continuous at the top, and the protrusion is fixed to a position shifted toward the one side that is the rotation direction of the barrel, on one inner surface plate constituting one side of the octagonal barrel. By
In the axial sectional view of the barrel, a pocket space including a part of the inner surface plate is formed on the side of the sloping surface of the ridge, and one of the other inner surface plates adjacent to the steeply inclined surface side of the ridge. The surface processing apparatus according to claim 1, wherein a relatively large pocket space including a portion is formed. The barrel axis has a rotational axis length that is not less than 3 times and not more than 4 times the representative diameter of the polygonal cross-sectional profile,
The surface according to any one of claims 1 , 2 and 3 , wherein a barrel rotation operation accompanied by an efficient deformation of the polishing can and the barrel can body is performed by generating a co-vibration due to the natural vibration of the barrel forming surface during the rotation driving. Processing equipment. The barrel axis has a rotational axis length that is not less than 3 times and not more than 4 times the representative diameter of the polygonal cross-sectional profile,
Both end plates of the barrel are made of elastic material,
Through a connection bracket that protrudes and is fixed to the outer surface of both end plates,
Claim 1 rotating axle is held tilting and holding position varying capable, 2, 3, or surface machining apparatus according to any one of 4. Using the surface processing apparatus according to any one of claims 1, 2, 3, 4, or 5, a surface processing method for performing uneven processing on a bar-shaped peripheral surface of a processing object that is a bar-shaped hardware for construction,
A charging step of charging the workpiece, the abrasive, and the polishing liquid into the barrel at a charging amount of a predetermined barrel volume ratio;
A barrel rotating step of rotating a polygonal cylindrical can-shaped barrel for a predetermined time at a constant speed rotation,
The object to be processed is made of a metal rod-like body having an axial length of over 2000 mm, the main material of which is any one of brass, aluminum and stainless steel,
Spatial axis length of the barrel space, Ri Do from the axis 120% to 130% or less of the length of the workpiece,
Each inner surface plate of the barrel is provided with a plurality of protrusions having a flattened cross-sectional shape on one side, each of which has a shape biased toward a specific one side in a barrel axial cross-sectional view.
During the barrel rotation process, the abrasive grains in the barrel have different timings on the steeply inclined surface and the gently inclined surface on each of the steeply inclined surface and the gently inclined surface constituting each protrusion, or steeply inclined. Surface processing method for building bar-shaped hardware that slides down at different falling speeds on the surface and gently inclined surface . Using the surface processing apparatus according to any one of claims 1, 2, 3, 4, or 5, the uneven processing is performed on the rod-shaped peripheral surface of the primary processed body of the processing object that is a bar-shaped hardware for construction before cutting. A surface processing method for performing
A charging step of charging the primary workpiece, the abrasive, and the polishing liquid into the barrel at a charging amount of a predetermined barrel volume ratio;
A barrel rotating step of rotating a polygonal cylindrical can-shaped barrel at a constant speed for a predetermined time;
The primary processed body after the barrel rotating step is taken out from the barrel and cut, and a cutting step for obtaining a secondary processed body of the workpiece is sequentially provided.
The primary processed body of the object to be processed is composed of a metal rod-like body having an axial length of 2000 mm or more, with any one of brass, aluminum, and stainless steel as a surface main material,
Spatial axis length of the barrel space, Ri Do from the axis 120% to 130% or less of the length of the workpiece,
Each inner surface plate of the barrel is provided with a plurality of protrusions having a flattened cross-sectional shape on one side, each of which has a shape biased toward a specific one side in a barrel axial cross-sectional view.
During the barrel rotation process, the abrasive grains in the barrel have different timings on the steeply inclined surface and the gently inclined surface on each of the steeply inclined surface and the gently inclined surface constituting each protrusion, or steeply inclined. Surface processing method for building bar-shaped hardware that slides down at different falling speeds on the surface and gently inclined surface .