JPH03281157A - Heavy polishing machine for coilform steel material by cylinder type resilient tool - Google Patents

Abstract

PURPOSE:To effectively utilize excellent grinding performance of a cylinder type resilient tool for coarse grinding of a coilform steel material by providing a turn-over mechanism for a grinding stone capable of simply replacing a next grinding stone set during a grinding work and a dresser capable of polishing wear of a grinding stone surface for correction. CONSTITUTION:Two sets of cylinder type resilient tools 6 are mounted on a rotary drum 16, and by turning over the rotary drum 16 in a 180 deg. arc, the resilient tool 6 moved to a waiting position is exchangeable. Meanwhile, a dresser 23 exclusively used for the mating resilient tool is attached and capable of correcting and polishing according to wear of the tool. As a result, a loss time required for exchange of the tool is eliminated and besides one-sided wear of the tool is prevented from occurring, and a neat ground surface is provided throughout the whole width of a coilform steel material. Besides, the tool can be effectively utilized as a heavy grinding machine, having excellent grinding capacity, at a process for coarse-grinding the coilform steel material.

Description

Detailed Description of the Invention (Field of Industrial Application) This invention is a method for correcting irregularities in shape such as mid-high crowns in the middle direction that occur on the surface of coiled steel materials such as stainless steel coil materials, removing defects, and oxidation. This invention relates to a heavy sanding machine for coiled steel material using a cylindrical elastic tool, which effectively utilizes an elastic grindstone with excellent grinding performance for surface maintenance such as film removal, and is equipped with a configuration that makes assembly work more efficient. .

(Conventional technology) Conventionally, surface flaws on coiled steel materials have been removed (2) by running a wide abrasive belt over a rough surface and pressing a rubber roller against the surface of the material with its elasticity. A single row of abrasive grains applied to an abrasive belt has a limited polishing ability, making it difficult to increase productivity. On the other hand, if you use a normal vitrified or resinoid grindstone and apply horsepower and pressure, it will have the ability to grind, but since the shape of the object being polished has changed, the grindstone will not fit the surface, so it will be difficult to grind. This in itself had its drawbacks.

(Problems to be Solved by the Invention) In view of the above-mentioned circumstances, this invention focuses on an elastic grindstone as a substitute for the sanding machine belt, and utilizes the excellent characteristics of the elastic grindstone to incorporate a coiled grindstone that incorporates a means to increase efficiency. This is an attempt to present a heavy-duty polishing machine for steel materials.

Incidentally, an elastic grinding wheel is more flexible than a resinoid grinding wheel, and as a wide cylindrical tool, it has high elasticity (2 to 3 times that of a resinoid grinding wheel) and is a grinding tool that easily conforms to the shape of the workpiece.

In belt grinding, for example, a belt grinder coated with a row of abrasive grains in a length of 3 meters requires replacement after 30 minutes of machining time, and if the cutting edge wears out, the cutting quality changes and the finish deteriorates. Since it is impossible to use a grinding method like surface polishing, where the top priority is to improve the productivity of assembly line work and ensure finish quality, we present a heavy-duty polishing machine for coiled steel materials using a cylindrical elastic tool as an alternative. This is the object of the invention.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention, when an elastic grindstone is adopted, grinds the grindstone surface that is worn out during grinding process and regenerates the cutting edge by replacing it with abrasive grains. The sharpness is stabilized by polishing. However, as the abrasive surface wears out, the grinding device becomes complicated, and the time required to replace the grindstone (4) is longer than with an abrasive belt.

Incidentally, the belt is simple because it is made of endless cloth or paper.

Therefore, the structure of the present invention includes a grindstone reversing mechanism that allows the next grindstone set during the grinding process to be easily replaced, and a dresser that can correct and polish the wear and tear of the grindstone surface, making it possible to make corrections while grinding. , a drive means that can freely switch these drives is provided, and the cylindrical elastic tool is configured to be effectively and efficiently used for heavy grinding of coiled steel material.

(Function) Since the present invention has the above-mentioned configuration, it takes advantage of the advantages of the elastic grindstone to stabilize the grinding performance, thereby ensuring a high-quality grinding surface, and in addition to the grinding ability that enables heavy grinding, it also eliminates the loss time caused by replacing the grindstone. This has the effect of solving problems through efficient productivity that can be saved.

(5) That is, two sets of cylindrical elastic tools are attached to the rotating drum,
By reversing the rotating drum 180 degrees, the elastic tools moved to the standby position can be replaced at will, while a dresser dedicated to each elastic tool can be attached to enable corrective polishing in immediate response to tool wear. There is no loss time for replacement, and there is no uneven wear of the tool, making it possible to obtain a beautiful ground surface from the center to the cup of the coiled steel material. In addition, it can be used as a heavy-duty polishing machine with excellent grinding ability in the rough grinding process of coiled steel materials, and has great effects.

(Example) Embodiments of the invention will be described below based on the drawings.

1 and 2 show an embodiment of a heavy polishing machine 1 for coiled steel material using a cylindrical elastic tool according to the present invention.

In this case, the stainless steel thin plate coil material is rolled up into a coil and delivered to the work line connected to the rolling process (6), where it is connected to a welding and shear forming machine and a bead grinder provided as a pre-grinding process. The coil material is then subjected to heavy polishing machines arranged in series to remove surface flaws. The embodiment of the present invention is installed as this heavy polishing machine.

In FIG. 1, the coiled steel cable C that has undergone the pre-grinding process is tensioned along a feed path P (pass line) via a breaker roll 2 provided in an example of a heavy polishing machine 1, and then stretched on a support stand 3. The billy roll 5 supported via the billy roll vertical mechanism 4 and the cylindrical elastic tool 6 that comes into contact with the billy roll 5 from above in a state close to line contact along its vertical center line XX are locked at the grinding position PC and sent. The upper surface of the coiled steel cable C inserted between the two is roughly ground by being driven in the direction K orthogonal to the direction F, and then transported to the next processing step via the breaker roll 2 provided on the other side of the pass line P. It is configured as follows. The polishing feed by the billy roll (7) 5 is performed by providing a fulcrum part 7 along the pass line P in an example of the width direction of the support base 3, and supporting one end 8 of the horizontal supporting member 9 on the other side. A hydraulic actuating device 11 connected to the billy roll 5 is provided, and is moved up and down in the vertical direction via a servo motor (path shown).
Push up the billy roll 5 that is pivotally supported by the vertical arm 13 of the lever arm 12 to grind the upper surface of the material C to the position PG.
The grinding wheel surface of the elastic tool 6 is pressed against the surface of the elastic tool 6. In addition, the billy roll up and down mechanism 4 of the billy roll 5 is a lever arm 12.
A hydraulic actuating device 15 connected to the horizontal lever 14 is separately installed on the support base 3 and raised and lowered in the vertical direction to rotate the billy roll 5 in the direction of arrow R, thereby releasing the pressing action of the billy roll 5 on the material. It has a configuration.

Next, as shown in FIG.
A rotating shaft 18 is mounted on one side of the rotating drum 16, which is supported via its rotating shaft 17 on the widthwise side of the drum 16 and is locked so as to be reversible by 180 degrees. A reversing arm 19 to which one end can be attached is provided, and the other end is supported in the upper and lower locking positions by being connected to the upper and lower drive shafts 21 of the gear box 20 provided on the other side in the width direction. It is configured to be able to drive shafts 18, and a cylindrical elastic tool 6 is installed on each rotating shaft 18. In addition, a support arm 22 extending horizontally from the reversing arm 19 to the left and right is installed.The dresser 2 for each ring can correct and polish the grinding wheel surface of the elastic tool 6 attached above and below.
3 can be attached to the support bracket 24 on the support arm 2
Protruding from one side of 2.

The rotating drum 16 is equipped with a rotating means that can be rotated by 18 degrees in the direction of the arrow AA, and is rotated along the outer circumferential circle 5 (9) shown by an imaginary line while keeping the whetstone surface of the cylindrical elastic tool 6 inscribed therein, so that the rotary drum 16 is rotated to the vertical center line. It is formed to be reversible along XX from an upper standby position PS to a lower grinding position PG. In addition, the elastic tool 6 is provided with a switching clutch 25 on each of the upper and lower drive shafts 21 built in the gear box 20, so that the driving force transmitted from the drive motor 26 via the bearing 27 is transmitted to the drive shaft 21 in a switchable manner. Grinding position P
While the elastic tool 6 is rotated at G to perform the grinding process, a dresser 23 is attached to carry out correction grinding at any time depending on the wear of the elastic tool 6 at the standby position PS, and the re-ground elastic tool 6 is always on standby. At the same time, the rotation of the upper tool 6 is stopped and the elastic tool 6 whose service life has expired is replaced and a new tool 6 is installed.
Since it can be installed interchangeably, there is no loss time for changing tools, and there is no uneven wear of the tools, making it possible to perform stable grinding over the entire length of the coil.

(10) Next, the grinding wheel surface of the elastic tool 6 may overcut or leave uncut parts depending on the widthwise dimension of the material.
3 is required, and correction can also be made when setting the tool 6. In addition, the drive device 2 of the elastic tool 6
8 is a gear box 20 attached to a bearing 27 directly connected to a drive motor 26 on a foundation 29 provided separately from the support 3 of the heavy sanding machine 1 installed on the floor G, on the rotating drum 16 side. It has a protruding configuration.

In addition, in order to avoid scattering of dust caused by polishing at the standby position PS of the elastic tool 6, a protective cover 30, which is hinged so as to be openable and closable, is provided to protect the rotating drum 16 from above.

(Effects of the Invention) Since the present invention has the above-described configuration, it has the following advantages.

(1) Coil (11
) Can be used for rough grinding of shaped steel cables, etc.

(2) One of the two sets of elastic tools attached to the rotating drum can be set up and prepared in advance, and the tool can be replaced by reversing the drum 180 degrees, which can significantly shorten the replacement time.

(3) A dresser is installed exclusively for each elastic tool, and while one tool is being ground, the other tool can be polished while correcting uneven wear, etc., so uniform polishing can be achieved throughout the entire coiled steel material. What you can do.

[Brief explanation of the drawing]

FIG. 1 is a front view illustrating the entire main part of an embodiment of a heavy duty sanding machine for coiled steel material using a cylindrical elastic tool according to the present invention, and FIG. 2 is a side view illustrating the entire main part thereof. (Explanation of symbols of main parts) 1... Heavy sanding machine for coiled steel material using cylindrical elastic tool 2... Preker roll (12) 5 ・ 6 ・ l 6 ・ 17 ・ 18 ・ 20 ・ 23 ・25 ・ 28 ・ P ・ C ・ y y. PG, PS, Billy roll, cylindrical elastic tool, rotating drum, rotating shaft, rotating shaft, gear box, dresser, switching clutch, drive device, feed path, coiled steel material, rotating axis, grinding position, Standby position (13)

Claims (1)

[Claims] A coil-shaped coil is stretched through a breaker roll (2) on the feed path (P) and is inserted between a rotating cylindrical elastic tool (6) and a billy roll (5) that supports the material and is ground. It is a heavy sanding machine made of steel material (C), with a rotating shaft (1
A cylindrical elastic tool is attached to two sets of rotating shafts (18) provided at radial positions symmetrical to the rotating axis (yy) of a rotating drum (16) which is horizontally supported so as to be reversible by 180°. (
6) are arranged in parallel, and the elastic tool (6) in the grinding position (PG) pressed against the upper surface of the material (C) can be connected to the elastic tool (6) in the opposing upper standby position (PS). clutch(
A drive device (28) is provided which can be driven freely through a gear box (20) provided with a gear box (25), while a dresser (23) dedicated to each elastic tool (6) is attached to the rotating drum (16). , in the grinding position (PG), the elastic tool (6) can be corrected by polishing, and in the standby position (PS), the elastic tool (6) can be exchanged and corrected by polishing. A heavy sanding machine for coiled steel materials using a cylindrical elastic tool.