JPH0585309B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a patterning method for creating a pattern on the outer peripheral surface of a pipe material (round pipe material) that is applied to pillars of buildings such as entertainment facilities. .

[Conventional technology] Conventionally, when grinding the outer peripheral surface of pipe material,
A rotary grindstone that rotates around a rotation axis parallel to the axis of the pipe material is moved in the axial direction of the pipe material while in contact with the outer peripheral surface of the pipe material to smoothen the outer peripheral surface of the pipe material.

[Problems to be Solved by the Invention] An object of the present invention is to create patterns based on differences in color tone of the material itself by imparting gloss differences due to differences in the degree of grinding in a pattern to the outer peripheral surface of a pipe material. be.

[Means for Solving the Problems] The present invention provides a rotary grindstone that is rotationally driven and formed to be elastically compressible and deformable about a rotating shaft perpendicular to the axial direction of a pipe material that is rotationally driven in a fixed position. The rotary whetstone is moved in the axial direction of the pipe material while the rotary whetstone is brought into sliding contact with the outer peripheral surface of the pipe material, and the contact pressure of the rotary whetstone against the pipe material is increased or decreased at minute intervals by the vibrating action of the rotary whetstone. The gist of this invention is a method for patterning a pipe material, in which a large number of spiral pattern rows in which a large number of pattern elements formed by a difference in grinding degree are arranged in a spiral pattern are created in parallel on the outer peripheral surface of the pipe material. It is something.

[Function] A round pipe material is rotated at a fixed position, and a rotary grindstone that can be elastically compressed and deformed is driven to rotate around a rotating shaft perpendicular to the axial direction of the round pipe material, and the rotary whetstone is turned into a round pipe material. When the rotary whetstone is moved in the axial direction of the round pipe material while in sliding contact, the abrasion resistance that the rotary whetstone receives from the round pipe fluctuates at minute intervals, causing the surface of the rotary whetstone to vibrate, causing the round pipe material to vibrate. The contact pressure of the rotary grindstone increases and decreases at minute intervals, and a large number of spiral pattern rows are formed on the outer circumferential surface of the round pipe material due to the difference in grinding degree, and a large number of pattern elements with different gloss are arranged in a spiral pattern. are created in parallel.

[Effects of the Invention] Since the present invention is configured as described above, it is possible to easily form a pattern by applying gloss differences at minute intervals to the outer peripheral surface of the pipe material. This has the effect of increasing the commercial value of pipe products by effectively creating a pattern on the pipe material that changes the color tone of the material itself.

[Example] Next, an example of the present invention will be described with reference to the drawings.

First, an embodiment of the apparatus used to carry out the present invention will be described. In a patterning apparatus for patterning the outer peripheral surface of a stainless steel pipe material P, one side of an oblong base 1 is A work table 2 is installed horizontally on the work table 2, and on this work table 2, front and rear parts 1, which are spaced apart from each other in the left and right direction and are arranged side by side to rotatably support both ends of the round pipe material P in the longitudinal direction, are installed. A pair of receiving rollers 3 are rotatably supported, and the rear outer receiving roller 3 is rotationally driven by a motor 4 attached to the underside of the work table 2, and is horizontally mounted on each receiving roller 3. The placed pipe material P is rotated at a fixed position about its axis P1.

A pair of left and right guide rails 6, 6 are laid in parallel along the front-rear direction at both widthwise ends of the base 1, and a rack gear 7 is installed on the inner surface of one guide rail 6 in the longitudinal direction. It is installed horizontally along the

A pair of front and rear roller shafts 9, 9 are supported in parallel along the left-right direction under the feed plate 8 installed horizontally above the base 1, and the left and right ends of both roller shafts 9 A pair of left and right rollers 10, 10 that are rollably placed on the guide rails 6 are respectively attached to the feed plate 8.
The axis P1 of the round pipe material P is passed through each roller 10 on the top.
It is installed so that it can be moved horizontally in any direction.

The feed plate 8 includes a reducer 11 whose output shaft 11a is driven to rotate in forward and reverse directions by a motor (not shown).
, an intermediate transmission member 12, and a bearing 13 in which the feed shaft 14 is rotatably inserted and supported vertically are attached, and the rotation of the output shaft 11a of the reducer 11 is transmitted to the feed shaft via the chain and sprocket wheel. 14
The feed shaft 14 is rotated in forward and reverse directions.

A pinion 17 meshed with the rack gear 7 is fitted to the lower end of the feed shaft 14, and the forward and reverse rotation of the feed shaft 14 causes the feed plate 8 to move forward or backward.

A support shaft 18 is horizontally and rotatably supported in the left-right direction via a bearing 19 above the front of the feed plate 8, and a front end is connected to the support shaft 18 above the feed plate 8. A grinding wheel head 20 whose rear end is supported by bolts 21 is installed so as to be tiltable in the vertical direction, and a continuously variable transmission with a motor 22 is mounted on this grinding wheel head 20.

A grindstone shaft 23 having an axis perpendicular to the direction of the axis P1 of the pipe material P is horizontally and rotatably supported on a hanging part 20a formed vertically at the front end of the grindstone head 20, and is equipped with a continuously variable speed motor. Output shaft 22a of machine 22
The rotation is transmitted to the grindstone shaft 23 via the pulley and belt, and the grindstone shaft 23 is driven to rotate at a constant speed.

At one end of the grinding wheel shaft 23, there is an axis P1 of the pipe material P.
A shown in FIG.
A disc-shaped rotary grindstone 24 that is rotationally driven in the direction is fitted. This rotary whetstone 24 is a rotary whetstone 24
A large number of abrasive papers arranged around the rotation shaft 24a are stacked in a spirally curved state in the counter-rotation direction from the rotation shaft 24a side to the use surface 24b side, and are made of elastic soft synthetic wood. It has a jointed structure and is formed to be elastically compressible and deformable.

When patterning the outer peripheral surface of the pipe material P using the patterning device described above, the pipe material P is rotated around its axis P1, and the rotary grindstone 2
4 is rotated in the A direction about the rotating shaft 24a orthogonal to the axis P1 direction of the pipe material P, the feed plate 8 is reciprocated from the start position to slide the rotary grindstone 24 on the upper end surface of the pipe material P. When the pipe material P is moved in a reciprocating straight line in the direction of the axis P1 while being in contact with each other, the outer peripheral surface of the pipe material P is evenly ground by the rotary grindstone 24 when the rotary grindstone 24 moves forward; During the backward movement, the abrasion resistance that the rotary whetstone 24 receives from the pipe material P fluctuates at minute intervals, causing the use surface 24b of the rotary whetstone 24 to change.
vibrates in the radial direction due to the elastic deformation behavior of the rotary whetstone 24, and the contact pressure of the rotary whetstone 24 against the pipe material P increases or decreases at minute intervals, so that the outer peripheral surface of the pipe material P has a difference in gloss due to the difference in the degree of grinding. It is applied in an almost regular pattern with minute intervals. That is, as shown in FIG. 3, on the outer peripheral surface of the pipe material P, there are many pattern elements M in the shape of arc line segments formed by the difference in the degree of grinding.
A large number of spiral pattern rows R to R are arranged in parallel around the axis P1 of the pipe material P in close proximity to each other, and the pattern in which the many spiral pattern rows R are arranged in parallel forms the entire outer circumferential surface. can create pipe products given to it.

In addition, the arrangement interval and spiral angle of the spiral pattern row R,
The arrangement interval of the pattern elements M, etc. can be changed by a combination of the rotational speed of the rotary grindstone 24, the movement speed, the rotational speed of the pipe material P, etc. Also, pattern element M
The difference in the degree of grinding between the grinding wheel and the surrounding parts can be changed depending on the elasticity of the rotary grindstone 24.

Next, the operation and curing of the embodiment having the above configuration will be explained.

In this example, a rotary grindstone 24 that is rotatably driven and formed to be elastically compressible and deformable around a rotating shaft 24a orthogonal to the direction of the axis P1 of the pipe material P that is rotatably driven in a fixed position is attached to the outer peripheral surface of the pipe material P. The rotary whetstone 24 is moved to the axis P1 of the pipe material P while increasing and decreasing the contact pressure of the rotary whetstone 24 against the pipe material P at minute intervals by the vibrating action of the rotary whetstone 24.
direction to create a large number of spiral pattern rows R in which a large number of pattern elements M formed by a difference in grinding degree are arranged in a spiral pattern on the outer circumferential surface of the pipe material P in parallel. It has been done.

Therefore, it is possible to easily create a pattern by applying gloss differences at minute intervals to the outer peripheral surface of the pipe material P, and change the color tone of the material itself to the pipe material P. This has the effect of increasing the commercial value of stainless steel pipe products by effectively creating a textured pattern.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a side view of a patterning device, FIG. 2 is a front view of the same, and FIG. 3 is a side view of a patterned pipe material. 24... Rotating grindstone, 24a... Rotating shaft, P...
Pipe material, P1...Axis center, M...Pattern element, R...
...Spiral pattern row.

Claims (1)

[Claims] 1 A rotary grindstone, which is rotatably driven in a fixed position and formed to be elastically compressible and deformable around a rotating shaft perpendicular to the axial direction of the pipe material, is brought into sliding contact with the outer circumferential surface of the pipe material, and the pipe material is The rotary whetstone is moved in the axial direction of the pipe material while the contact pressure of the rotary whetstone against the material is increased or decreased at minute intervals by the vibrating action of the rotary whetstone, and a large number of particles formed by the difference in grinding degree are moved. A method for patterning a pipe material, characterized in that a large number of spiral pattern rows in which pattern elements are arranged in a spiral pattern are created in parallel on the outer peripheral surface of the pipe material.