JP2001150308A - Surface grinding device for h-shape steel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surface grinding device for H-shape steel capable of efficiently grinding an important part of the H-shape steel over the whole length by a compact mechanism. SOLUTION: A H-shape steel M to be ground is forwardly/backwardly conveyed in the H letter state that a web Mc becomes horizontal so as to penetrate through an inner side of a square shape frame A1. Both vertical surfaces of the web Mc and inner and outer surfaces of right and left flanges Ma, Mb are independently ground by grinding heads 21, 22 for vertical web surfaces, grinding heads 23, 24 for a flange inner surface and grinding heads 25, 26 for a flange outer surface. Grinding wheel shafts 23a, 24a of the respective grinding heads 23, 24 for the flange inner surface are directed to any one of right and left 0 deg. or 180 deg. by a tool shaft twisting/fixing mechanism. A disc grinding wheel W in which a grinding application surface is abutted to the respective surfaces of the H-shape steel is attached to tip ends of the respective grinding wheel shafts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface grinding apparatus for H-section steel suitable for removing an oxide film (black scale) covering both front and back surfaces of an H-section steel used for a building or the like.

[0002]

2. Description of the Related Art Generally, H is used for steel frames of buildings.
As shown in FIG. 18, the shaped steel is formed by drilling a predetermined pattern as a group of holes for joint holes at predetermined positions of both flanges (side plate portions) and the web (middle plate portion), and cutting predetermined portions. After dividing into the joint material and the beam material, as shown in FIG. 19, one end of the joint material is welded to the column material, and at the construction site,
The joint member and the beam member are assembled by abutting a perforated seam plate of the same pattern to adjust the position of each hole, and tightening both with a high-strength bolt.

[0003] Here, in general, burrs and burrs due to drilling are generated in the seam hole portion of the H-section steel, so they must be removed. In addition, in order to stabilize the coefficient of friction with the seam plate, the seam hole is formed. It is necessary to grind the surface around the hole to remove the oxide film.

Conventionally, such a grinding operation has been performed manually by a worker using a handy tool called a disk sander, as shown in FIG. However, this work requires not only a considerable amount of labor in a harsh working environment where dust and noise are severe, but also in a normal stationary state where the H-shaped steel is in an H-shape where the web is horizontal. Only the inner surface of both flanges and the outer surface of both left and right flanges that are continuous with the upper surface of the web and the outer surface of both left and right flanges can be machined. There is a problem that it is necessary to reverse the operation, the work efficiency is low, and the danger of the work is high.

In order to automate such an operation, the present applicant has provided a vertical column slidable along a horizontal guide, and two upper and lower supports slidable in the vertical direction along the vertical column. A drive mechanism is provided for arranging the bodies and symmetrically moving and parallelly moving the respective supports, and each of the supports is provided with a disk grindstone so as to face each other vertically via an arm-shaped member. H-shaped steel fixed on a roller conveyor by a disk whetstone mounted on each of the whetstone heads arranged vertically facing each other by mounting a whetstone head and its swinging mechanism for arm, and a telescopic mechanism of an arm-shaped member (Japanese Patent Application Laid-Open No. 58-1148) has proposed an apparatus for polishing a surface of an H-section steel in which an upper part and a lower part of the surface are made to follow each other to grind (grind) a main part.
No. 54).

[0006]

By the way, in the apparatus according to the above-mentioned proposal, in addition to taking up space, the grindstone heads are mounted on both ends of the arm-shaped members respectively mounted on the supports supported on the vertical column. Thus, the front end and the rear end of the H-section steel can be ground, but only two upper and lower whetstones are involved in the grinding process at the same time. There is a problem that grinding cannot be performed at a position in the longitudinal direction.

[0007] The present invention has been made in view of such a point, and an object of the present invention is to provide an efficient H-section steel with a more compact mechanism than the above-mentioned proposed apparatus. It is an object of the present invention to provide an H-section steel surface grinding apparatus capable of grinding a portion, and also capable of grinding a hole at an intermediate position in the longitudinal direction of the H-section steel in the same manner as both end portions.

[0008]

Means for Solving the Problems In order to achieve the above object, a solution taken by the invention according to claim 1 of the present invention is an H-shape which grinds a main portion of a web and both flanges of an H-shape steel. Assume a surface grinding device for steel. A frame in the shape of a square, a H-shaped steel to be ground, a material feeding means for transporting the H-shaped steel in a longitudinal direction so as to penetrate the inside of the frame in an H-shape in which the web is horizontal, and the frame A pair of upper and lower web surface grinding heads, each of which is supported so as to be able to move left and right and up and down along the upper and lower horizontal parts, and the tool axis is vertically oriented, and along the upper and lower horizontal parts of the frame A pair of upper and lower flange inner surface grinding heads each having a tool shaft oscillating / fixing mechanism that is supported to be able to move left and right and up and down freely, and each of which turns the tool shaft to the left in the horizontal direction and to the right in the horizontal direction. At the facing position of the above-mentioned frame that faces left and right across the grinding head for the inner surface of the flange, it is supported to be able to move left and right and up and down, respectively, A pair of left and right flanged grinding heads for the outer surface of the flange and the tool shaft of each of the above-mentioned grinding heads are rotatably and integrally connected to each other, and the respective grinding action surfaces are pressed against the upper and lower surfaces of the web and the inner and outer surfaces of both flanges. And a disc-shaped grinding tool for grinding both upper and lower surfaces and both inner and outer surfaces of both flanges, and a grinding head moving mechanism for displacing the respective grinding heads in the left-right direction and the up-down direction, respectively.

More specifically, the H-section steel is inserted inside a square-shaped frame in a state where the web is in an H-shape in which the web is horizontal, and is transported in the longitudinal direction by a feeding means. A web surface grinding head that can move left and right and up and down along the upper and lower horizontal portions of the frame is responsible for grinding both upper and lower surfaces of a horizontal web. In addition, the grinding head for the inner surface of the flange, which can move left and right and up and down along the upper and lower horizontal portions of the frame, respectively, can swing the tool axis 180 degrees left and right, and the tool axis is turned leftward in the horizontal direction. In this case, the grinding of the inner surface of the vertical left flange and the grinding of the inner surface of the vertical right flange can be performed with the tool axis oriented rightward in the horizontal direction.

On the other hand, the flange outer surface grinding head, which can freely move left and right and up and down at the left and right facing positions of the frame, is responsible for grinding the outer surfaces of both vertical left and right flanges.
Therefore, with the six grinding heads in total, it is possible to grind the web of the H-section steel and the surfaces of the main parts of both flanges, which are conveyed inside the frame.

In the surface grinding of the H-section steel, most operations are performed to grind the surface around the seam hole portion formed in the web and both flanges. Further, the seam hole of the H-section steel flange is formed by sandwiching the web. Since it has a symmetrical arrangement in all directions,
Naturally, the flange grinding step may be performed by grinding the same position in the longitudinal direction of the H-section steel in both the upper and lower directions.
Grinding of the outer surfaces of both flanges by the flange outer surface grinding head can be performed simultaneously, and highly efficient surface grinding using four disk-shaped grinding tools at the same time becomes possible.

In addition, on the pattern of the seam holes (hole groups) of the H-section steel, the surface area of the web surface to be individually ground up and down by the grinding head for each web surface, and the top and bottom individually by the grinding head for each flange inner surface. The surface area of the inner surface of the left and right flanges substantially coincides with the surface area of the outer surface of the left and right flanges that are individually ground by the grinding head for each flange outer surface. For this reason, the wear time of the disc-shaped grinding tools is almost the same, and the disc-shaped grinding tools need only be replaced at the same time for each grinding head, so that the serviceability is improved.

In addition, the upper and lower flange inner surface grinding heads can grind the inner surfaces of the left and right flanges with one disk-shaped grinding tool by oscillating the tool shaft to the right and left by 180 °, respectively. Compared to the two, the disk-shaped grinding tool is only at one end, not both ends of the tool shaft, so the dimension from the grinding action surface of the disk-shaped grinding tool to the opposite end of the grinding head can be shorter, and between the left and right flanges The range of application extends to H-section steels with small dimensions.

Further, since the disc-shaped grinding tool does not wear unevenly, the surface to be ground always keeps a constant surface accuracy. Then, a drilled portion at an intermediate position in the longitudinal direction of the H-section steel can be ground in the same manner as the both ends. This is also true for the second embodiment described later.

On the other hand, in place of the grinding head for the inner surface of the flange in which a disk-shaped grinding tool is attached to one end of the tool shaft according to the first aspect of the present invention, instead of the tool shaft according to the second aspect, When a grinding head for the inner surface of a flange with disk-shaped grinding tools attached to both ends is used, the inner surfaces of the left and right flanges are individually ground by the disk-shaped grinding tools at both ends of the tool shaft. A tool shaft swinging / fixing mechanism for swinging is not required. This allows
The structure of the grinding head for the inner surface of the flange is simplified.

According to a third aspect of the present invention, there is provided a frame driving mechanism for moving the frame in parallel with the material feeding direction by the material feeding means, and the positioning of each grinding head in the longitudinal direction of the H-section steel is performed by the frame driving mechanism. And the material feeding means are selectively driven.

More specifically, the relative movement distance is long, such as a movement for aligning each grinding head and a plurality of separated grinding portions (hole groups) of the H-section in the longitudinal direction of the H-section. About the part, it is done by sending H-section steel by sending material means,
On the other hand, when the relative movement distance is short, such as the movement within the grinding portion (in the group of holes), the movement is performed by moving the frame by the frame driving mechanism. As described above, using the material feeding means and the frame driving mechanism properly is very effective in performing an accurate and light positioning operation, particularly when grinding heavy large H-section steel.

According to a fourth aspect of the present invention, there is provided a length measuring means for measuring a material feeding distance by the material feeding means, and an end face detecting means for detecting an end face position of the H-shaped steel conveyed by the material feeding means in the conveying direction. And storage means for storing previously input position data of the H-section to be processed, and the material feeding means based on the position data stored in the storage means and the outputs from the length measuring means and the end face detecting means. When a control means for controlling the grinding head moving mechanism is provided, it is possible to automatically grind the web and the main parts of the left and right flanges over the entire length of the H-section steel.

More specifically, from the point in time when the end face position of the H-section in the transport direction is detected by the feeding material by the end face detection means, the H-section is fed by the length measuring means based on the position data stored in the storage means. The material is transported to the position to be processed while measuring the material distance. The grinding head moving mechanism moves each grinding head right and left and up and down to automatically grind the upper and lower surfaces of the web of the H-section steel and the right and left flange inner and outer surfaces. As a result, it is possible to improve the work efficiency, improve the work environment, and reduce labor costs.

Further, as the grinding head moving means, a single actuator is used for one of the pair of vertically opposed grinding heads, and the other grinding head is used as the grinding head moving means. When connected via a wire so that it can be displaced in the left and right direction in response to the displacement of one of the grinding heads, the left and right movements of the pair of grinding heads are synchronized by the wire, making it very simple. It is possible to make a configuration.

[0021]

Embodiments of the present invention will be described below with reference to the drawings.

<First Embodiment> FIGS. 1 to 5 show a first embodiment corresponding to claim 1 of the present invention, wherein X1 is a surface grinding apparatus for H-section steel. The surface grinding device X1 for section steel is provided with a base X1a on the ground G (shown in FIGS. 2 to 5).
Are grounded. As shown in FIGS. 1 to 4, the surface grinding apparatus X1 for an H-section steel includes a square frame A1 as a square frame and an H-section steel M (see FIG. (See FIG. 1, FIG. 2 and FIG. 5) as a material feeding means for conveying in a longitudinal direction so as to penetrate through the inside of the square frame A1 and a horizontal portion of the square frame A1. Are vertically and freely movable along the upper and lower horizontal beams A11 and A12 (shown in FIGS. 2 to 4), respectively, and grindstone shafts 21a and 22a (shown in FIG. 4) as tool shafts, respectively. Pair of upper and lower web surface grinding heads 21
2 (shown in FIGS. 2 and 4) and a square frame A1
A pair of upper and lower grinding heads for the inner surface of a flange, which are supported so as to be able to move left and right and up and down along the upper and lower horizontal beams A11 and A12, respectively, and have grinding wheel shafts 23a and 24a (shown in FIG. 3) as tool shafts, respectively. 23, 24 (shown in FIG. 3), and the grinding heads 23, 2 for the inner surface of each flange.
4 are supported along the left and right vertical columns A13 and A14 (shown in FIGS. 1 to 4) of the square frame A1 facing left and right with the grinding wheel shaft 25a, respectively. A pair of left and right flange outer surface grinding heads 25 and 26 (shown in FIG. 3) having 26a (shown in FIG. 3), and the grinding wheel shafts 21a to 21g of the respective grinding heads 21 to 26.
A disk grinding wheel W as a disk-shaped grinding tool, which is rotatably and integrally connected to each of the grinding heads 26a;
Hydraulic cylinders 27d, 2 as a grinding head moving mechanism for individually displacing the cylinder 6 in the horizontal direction and the vertical direction, respectively.
7e, 28d, 28e, 29d, 29e (see FIG. 6)
And a length measuring device 4 (see FIG. 6) as a length measuring means for measuring a material feeding distance by the material feeding device 1, and conveyed forward (to the left in FIGS. 1 and 2) by the material feeding device 1. Position of the front end face of the H-section steel M (left end face position in FIGS. 1 and 2)
1 (FIG. 1) as an end face detecting means for detecting
And FIG. 5), a storage device 6 (see FIG. 6) as storage means for storing previously input position data of the H-section steel M to be machined, and position data stored in the storage device 6; Based on the outputs from the length measuring device 4 and the end face detecting device 5, the material feeding device 1 and the hydraulic cylinders 27d, 27e, 28d, 28e, 29d, 29
e and 10 as control means (FIG. 6)
See).

The base X1a is provided with rails X11 and X12 extending in the front-rear direction on the left and right sides thereof. The rectangular frame A1 is supported along the rails X11 and X12 so as to be movable back and forth with respect to the base X1a. ing.

As shown in FIGS. 3 and 4, the rectangular frame A1 has a structure in which the left and right ends of upper and lower horizontal beams A11 and A12 are connected by vertical pillars A13 and A14, respectively. As shown in FIGS. 1, 3, and 4, brackets A1 extending in the front-rear direction are provided below the vertical columns A13, A14 of the square frame A1.
3a and A14a are fixed. This bracket A
The wheels A15,
(Shown in FIGS. 2 to 4) are supported so as to freely roll. The square frame A1 is slidably supported on the rails X11 and X12 of the base X1a via the wheels A15. As shown in FIGS. 1 and 2, a hydraulic cylinder 10 as a frame driving mechanism is connected between the square frame A1 and the base X1a. Move back and forth along the rails X11 and X12 of the base X1a. In this case, a hydraulic cylinder 10 having a built-in encoder is applied, and a pulse signal corresponding to the amount of advance and retreat of the piston is output to the control device 7.

The position of each wheel A15 is set higher than the horizontal beam portion A12 below the square frame A1, and the left and right rails X11 and X12 of the base X1a pass through the inside of the square frame A1. It is in a state where it has been done. Upper portions of both front and rear ends of the left and right rails X11 and X12 are respectively paired with front and rear block bases X13 and X extending in the left and right direction.
14 are connected.

The material feeding device 1 includes left and right rails X11 and X1.
And front and rear receiving rollers 11a and 11b rotatably supported on the front and rear ends of the frame 2, respectively, and a square frame A1
Front and rear receiving rollers 12 rotatably supported on the front and rear ends of left and right brackets A13a and A14a, respectively.
a, 12b and the respective receiving rollers 11a, 11b, 12
Front and rear transport drive mechanisms 15 and 16 for nipping and transporting the H-section steel M from both the left and right sides on a and 12b. Each of these receiving rollers 11a, 11b, 12
An H-section steel M (an H-section steel which has been pierced to be a semi-finished product) is placed on a and 12b in a state where the web Mc is in a horizontal H-shape. Mechanism 1
5 and 16, the H-shaped steel M is transported in the longitudinal direction so as to penetrate the inside of the square frame A1.

A carry-in electric roller stand 14 is provided behind the base X1a, and each of the receiving rollers 11a, 11b, 12
The loading of the H-shaped steel M toward the a and 12b is performed by the electric roller 14D on the loading electric roller base 14 (only one is shown in the drawing).
Is to be done through. On the other hand, base X1a
The electric roller base 13 for unloading is provided in front of the roller, and the H-shaped steel M sent forward on the receiving rollers 11a, 11b, 12a, 12b is unloaded out of the surface grinding apparatus X1 for H-shaped steel. Is carried out via an electric roller 13D (only one is shown in the figure) on the electric roller base 13 for unloading. Chain sprockets 14a, 13a are respectively connected to the left and right shaft ends of the electric roller 14D of the carry-in electric roller base 14 and the electric roller 13D of the carry-out electric roller base 13, and these chain sprockets 14a, 13
a is rotatably connected via chains 14b and 13b wound around output shafts of a drive motor (not shown), respectively. In this case, the drive motors are synchronized with each other by an inverter.

Front and rear transport drive mechanisms 15, 16
Are the front and rear block bases X13, X13, which extend in the left-right direction at the front and rear ends of the left and right rails X11, X12, respectively.
It is rotatably mounted on the inside of a front fixed block X12a and a rear fixed block X12b erected at the right end of X14 via shaft parts 15a and 16a extending in the vertical direction, respectively, and the left part of the outer peripheral surface is used for each receiving member. Rollers 11a, 11
b, flange Mb on the right side of H-section steel M on 12a, 12b
Drive-side rollers 15b and 16b that abut against the outer surface, and shaft portions 15 of the drive-side rollers 15b and 16b that are provided on the upper surfaces of the front fixed block X12a and the rear fixed block X12b.
output shafts (not shown) are provided at the speed reduction mechanism 1
Drive motor 15 before and after meshing via 5c, 16c
d, 16d, front and rear sliding blocks 15e, 16e slidable on the front and rear block bases X13, X14, and a pair of front and rear rotating shafts (not shown) extending vertically to the respective sliding blocks 15e, 16e. ), And is rotatably mounted on the outer peripheral surface of each of the receiving rollers 11.
a, 11b, 12a, 12b, a pair of front and rear driven rollers 15f, 15f, 16f, 16f that contact the outer surface of the left flange Ma of the H-section steel M from two front and rear positions, a front fixed block X12a, and a rear fixed block. The cylinder tube 19a is provided between the X12b and each of the sliding blocks 15e and 16e, and the cylinder tube 19a is provided in the block bases X13 and X14 below the front fixed block X12a and the rear fixed block X12b. The distal end of 19b is provided with telescopic cylinders 19, 19 respectively fixed thereto. The front and rear transport drive mechanisms 15 and 16 are provided on the outer surface of the right side flange Mb of the H-shaped steel M carried in from the electric roller 14D on the carry-in electric roller base 14 and the outer periphery of the front and rear drive side rollers 15b and 16b. In the state where the surfaces are in contact with each other, each telescopic cylinder 19 is contracted and each sliding block 15e, 16e is slid rightward, so that each driven side roller 15f, front and rear with respect to the outer surface of the left flange Ma. 16f are brought into contact with each other to clamp the H-shaped steel M from the left and right directions, and in this state, the drive side rollers 15b, 16d are driven by the respective drive motors 15d, 16d.
By rotating b, the H-section steel M can be transported so as to penetrate the inside of the square frame A1. In this case, the front and rear transport drive mechanisms 1
The drive motors 15d and 16d are synchronized with each other by inverters.

Each of the receiving rollers 11a, 11b, 12a,
12b, as shown in FIG. 1, a flange 17a, which is in contact with the outer surface of the right flange Mb of the H-section steel M on the right side, respectively.
... Also, the electric rollers 14D, 13D of the carry-in electric roller base 14 and the carry-out electric roller base 13 are provided.
Similarly, the right side is also provided with flange portions 17a, 17a. The outer surface of the right side flange Mb of the H-section steel M is brought into contact with the respective receiving rollers 11a, 11b, 12a, 12b and the flanges 17a of the electric rollers 14D, 13D, and the front and rear drive side rollers 15b, 16b. In the state of being brought into contact with the outer peripheral surface, the telescopic cylinders 19 are contracted and the sliding blocks 15e, 16e are slid rightward, whereby the driven rollers 15f, 16f are respectively brought into contact with each other, and the H-shaped steel M is pressed to the right.
As a result, the H-shaped steel M is not meandered.

Upper and lower web surface grinding heads 21 and 22
As shown in FIG. 4, a slider is mounted on a horizontal rail unit 27a that extends in the horizontal direction (left and right direction) on the rear surface (the front surface in FIG. 4) of the upper and lower horizontal beams A11 and A12 of the square frame A1, respectively. It is slidably supported in the left-right direction via 27b. Web surface grinding head 21,
A vertical rail unit 27c extending in the vertical direction (vertical direction perpendicular to the web Mc) is provided on the front surface (the rear surface in FIG. 4) of the web surface grinding head 2.
The sliders 1 and 22 are slidably supported in the vertical direction on the rear surface (the front surface in FIG. 4) of the slider 27b via a vertical rail unit 27c.

Grinding motors 21b and 22b are attached to the web surface grinding heads 21 and 22, respectively. The grinding motors 21b and 22b rotate the grindstone shafts 21a and 22a, respectively, which are oriented in the vertical direction. ing. And the grinding heads 21 and 22 for each web surface
Are movable on the horizontal rail unit 27a in the left-right direction via sliders 27b by the operation of hydraulic cylinders 27d provided on the rear surfaces of the horizontal beams A11 and A12 of the square frame A1. The operation of the hydraulic cylinder 27e provided enables the vertical cylinder unit 27c to move vertically.

Grinding heads 23, 2 for inner surfaces of upper and lower flanges
4 are square frames A1 as shown in FIG.
Are horizontally slidably supported via sliders 28b on horizontal rail units 28a, 28a extending in the horizontal direction (left-right direction) on the front surfaces of the upper and lower horizontal beams A11, A12. Each slider 28b has a gear case K
3 is provided, and the gear case portion K3 has a grinding wheel shaft 2
3a and 24a are oriented leftward in the horizontal direction (the state indicated by the two-dot chain line in FIG. 3), and the state is oriented rightward in the horizontal direction (FIG. 3).
The state shown by the solid line in FIG. 7 is a tool axis swinging / fixing mechanism K (FIGS.
(See FIG. 10).

Grinding heads 23, 24 for each flange inner surface
Is provided with a grindstone rotating mechanism T (see FIG. 7) for rotating the grindstone shafts 23a and 24a oriented in the horizontal direction by grinding motors 23b and 24b, respectively. The grindstone rotating mechanism T has a cylindrical case T4 with respect to the slider 28b. It is slidably supported in the vertical direction via a key K4. The grinding heads 23 and 24 for the inner surfaces of the flanges are
Hydraulic cylinders 28d provided on the front surfaces of the horizontal beams A11 and A12 can be moved left and right on the horizontal rail unit 28a via sliders 28b by the operation of hydraulic cylinders 28d provided on the front surfaces of the horizontal beams A11 and A12. With the operation of the slider 28b, the slider 28b can move up and down with the grinding wheel rotating mechanism T.

Grinding heads 25, 2 for outer surfaces of left and right flanges
Reference numeral 6 denotes a horizontal rail unit 28a which supports the upper flange inner surface grinding head 23 so as to be movable left and right, and is slidably supported in the left and right direction via a slider 29b. Vertical rail units 29c extending in the vertical direction (up and down direction) are provided on the rear surfaces of the grinding heads 25 and 26 for the flange outer surfaces, respectively. It is slidably supported in the up-down direction via 29c. Grinding motors 25b and 26b are attached to the flange outer surface grinding heads 25 and 26, respectively, and the grinding motors 25b and 26b rotate the grindstone shafts 25a and 26a that are oriented in the horizontal direction, respectively. The grinding heads 25 and 26 for the outer surfaces of the flanges are connected to the horizontal beams A1 of the square frame A1.
The slider 29 moves on the horizontal rail unit 28a by the operation of the hydraulic cylinders 29d provided on the upper surface of the
b, the slider 29 is movable in the left-right direction.
The vertical cylinder unit 29c can be moved up and down by the operation of a hydraulic cylinder 29e provided on the rear surface of the b. These upper and lower flange inner surface grinding heads 23 and 24 and left and right flange outer surface grinding heads 25 and 2 are provided.
6 are arranged on the same plane at the front position of the square frame A1.

The H-shaped steel M has its right side flange Mb in contact with the respective receiving rollers 11a, 11b, 12a, 12b and the respective flanges 17a of the electric rollers 14D, 13D, and the position is determined. The lateral movement amount of the flange outer surface grinding head 26 (disk grindstone W) is slightly between the origin position described below and the grinding position where the outer surface of the right flange Mb is brought into contact with and ground. Therefore, the hydraulic cylinder 29d for left-right movement of the right flange outer surface grinding head 26 may be a compact cylinder having an extremely small stroke amount.

Of the above hydraulic cylinders, the upper hydraulic cylinder 27d for left and right movement of the upper and lower web surface grinding heads 21 and 22 and the upper and lower flange inner surface grinding heads 23 and 22 are used.
24 upper and lower hydraulic cylinders 28d and 28e for vertical movement, and hydraulic cylinders 29e for vertical movement of the grinding heads 25 and 26 for the outer surfaces of the left and right flanges.
Is a cylinder with a built-in encoder that outputs a pulse signal according to the amount of movement of the piston. Then, a hydraulic cylinder 27 for left and right movement of the lower web surface grinding head 22 is provided.
The hydraulic fluid passage d communicates with the hydraulic cylinder 27d for left and right movement of the upper web surface grinding head 21 by an equal flow dividing valve (not shown), and operates in synchronism with the hydraulic cylinder 27d. The hydraulic cylinder 28d for the left and right movement of the lower flange inner surface grinding head 24 has a hydraulic oil flow path provided by an equal flow dividing valve (not shown). 28d, and operates in synchronization with the hydraulic cylinder 28d.

The disc grindstone W presses the respective grinding action surfaces (substantially disc-shaped surfaces) against the upper and lower surfaces of the web Mc of the H-section steel M and the inner and outer surfaces of both the left and right flanges Ma and Mb, thereby causing the upper and lower surfaces of the web Mc to move. Both surfaces and both inner and outer surfaces of both flanges Ma and Mb are ground.
In this case, the grinding with the disc whetstone W
a, Mb to remove oxide films on both the inner and outer surfaces and the upper and lower surfaces of the web Mc.
It is about 2 mm.

FIG. 7 is a longitudinal sectional view in the left-right direction showing the upper flange inner surface grinding head 23 as an example.
Is a longitudinal sectional view in the front-rear direction. In FIG. 7,
The fixing mechanism K rotates the grinding head 23 for the inner surface of the flange together with the grinding wheel rotating mechanism T about the vertical axis m of the cylindrical case T4 extending in the up-down direction, so that the grinding wheel shaft 23a is turned leftward in the horizontal direction and in the horizontal direction. It is configured to mutually convert 180 ° to a rightward state. Further, the grinding wheel rotating mechanism T is configured to connect the grinding motors 23b arranged on both upper and lower sides with the swinging / fixing mechanism K and the grinding wheel shaft 23a of the flange inner surface grinding head 23 so as to be able to transmit power. Have been.

The grinding wheel rotating mechanism T is housed in a flange inner surface grinding head 23. The grinding head 23 for the inner surface of the flange includes a holding case T1 for holding a motor 23b for grinding, and a grinding wheel shaft 23a formed of a pair of bearings T2 and T2.
A grinding head case T3 rotatably supported via
A cylindrical case T4 having a cylindrical shape that is long in the vertical direction and connects the holding case T1 and the grinding head case T3. As shown in FIG. 9, a driving pulley T5 rotatably connected to the output shaft 23c of the grinding motor 23b is accommodated in the holding case T1. As shown in FIG. 7, bearings T2, T
A driven pulley T6 provided integrally with the grinding wheel shaft 23a is accommodated between the two. Further, a power transmission belt T7 wound around a drive pulley T5 and a driven pulley T6 is accommodated in the cylindrical case T4, and the rotation of the grinding motor 23b is rotated by the power transmission belt T7. The power is transmitted to the grinding wheel shaft 23a (disk grinding wheel W) via T6. Also,
As shown in FIG. 8, the upper end of the holding case T1 bears a bearing T against a substantially L-shaped support arm T8 fixed to the tip (upper end) of a piston rod 28f of a hydraulic cylinder 28e.
9 and supported rotatably about the vertical axis m of the cylindrical case T4.

On the other hand, as shown in FIG. 10, the swinging / fixing mechanism K includes a rack K1 and a pinion gear K2 which mesh with each other. The rack K1 and the pinion gear K2 are housed in a gear case K3 provided on the slider 28b. The gear case portion K3 supports the grindstone rotation mechanism T on the outer peripheral surface of the cylindrical case T4 so as to be movable in the direction of the vertical axis m (vertical direction) and rotatable about the vertical axis m. That is, the cylindrical case T4
Has a key groove K6 extending on the outer peripheral surface in the direction of the vertical axis m, and is supported so as to be slidable in the vertical direction through a key K4 provided on the pinion gear K2 and integrally rotatable about the vertical axis m. I have. The rack K1 is in a direction orthogonal to the vertical axis m in the gear case portion K3 (left-right direction).
And is movable in the left-right direction by the operation of an extendable cylinder K5 provided at the left end of the gear case portion K3. Then, when the pinion gear K2 is rotated by the rack K1 which moves left and right by the telescopic cylinder K5, the cylindrical case T4 rotates forward and backward by 180 ° around the vertical axis m, thereby turning the grinding wheel shaft 23a to the left in the horizontal direction. , And the state is turned rightward in the horizontal direction. In this case, the telescopic cylinder K5
Has a built-in limit switch that outputs a contact signal when the rotation angle of the grinding wheel shaft 23a reaches the position of 0 ° and 180 °.

Also, hydraulic cylinders 27e and 28 for moving the grinding heads 21 to 26 up and down or left and right respectively.
The members that move by the operation of the d and 29d move in a direction in which the disk whetstone W approaches each plane of the H-section steel M via a spring (not shown) with respect to the piston of each of the hydraulic cylinders 27e, 28d, and 29d. And a limit switch (not shown) for generating a contact signal when the spring is deflected by a certain amount or more. The contact can be detected with the force of.

As shown in FIG. 1, the length measuring device 4 is rotatably supported by a front horizontal bracket 4a which protrudes forward (toward the unloading electric roller table 13) from the upper end of the front fixed block X12a. Behind the upper end of the disk 41 and the rear fixed block X12b (on the side of the loading electric roller base 14)
Rear measuring disk 42 rotatably supported by a rear horizontal bracket 4b protruding from each other, and each measuring disk 41, 4
2, pulse generators 43, 43 respectively attached to
And Each of the length measuring disks 41 and 42 rotates (rotates) when its outer peripheral surface abuts against the outer surface of the right flange Mb of the H-section steel M, and a pulse corresponding to the rotation angle is generated by the pulse generator 43. I do. As shown in FIG. 6, the pulse signal output from the length measuring device 4 (each pulse generator 43) indicates the rotation amount of the front-side measuring disk 41 and the rear-side measuring disk 42, that is, the material feeding amount. The data is taken into the control device 7 as the material feeding data of the H-shaped steel M by the length measuring device 4.

As shown in FIGS. 1 and 5, the end face detecting device 5 includes a pair of left and right transmission type photoelectric sensors 51, 51 each including a light projecting body and a light receiving body. The transmission type photoelectric sensors 51, 51 are provided on the front surfaces of the rear fixed block X16b and the rear sliding block 16e, and detect that the front end of the H-section steel M has passed. And
As shown in FIG. 6, the front end face passage data of the H-section steel M detected by the transmission type photoelectric sensors 51, 51 is transmitted to the control device 7.
Incorporated in.

The storage device 6 is connected to the control device 7. A keyboard 71 is connected to the control device 7. The cross-sectional dimensions of the H-shaped steel M input by the keyboard 71, the left and right flanges Ma, Mb and the web M
Data such as the position to be processed in c is stored in the storage device 6 via the control device 7.

The control device 7 includes a length measuring device 4 (pulse generator) that is mounted on the front-side measuring disk 41 and the rear-side measuring disk 42 and outputs a pulse signal corresponding to the material feed amount of the H-section steel M. 43, 43), an end face detecting device 5 for detecting the front end face of the H-section steel M (each transmission type photoelectric sensor 51), each hydraulic cylinder 27d, 28d, 28e, 29e for moving each grinding head 21 to 26, and Encoder built in the hydraulic cylinder 10 for driving the V-shaped frame A1, a limit switch of the telescopic cylinder K5 for detecting that the oscillating angle of the grinding wheel shaft 24a has reached the position of 0 ° and 180 °, and each of the grinding heads 21 to 26 The output from each limit switch, which outputs a contact signal when the disk whetstone W of this type comes into contact with the surface of the H-section steel M, is taken in, while the front and rear transport drives Drive motor 15 for mechanisms 15 and 16
d, 16d, each telescopic cylinder 19 before and after holding the H-shaped steel M, each grinding motor 21b-26b, each hydraulic cylinder 27d, 27e, 28d, 28e, 29d, 29e, hydraulic cylinder for driving the square frame A1 A control signal is output to the telescopic cylinder 10 and the telescopic cylinder K5 for swinging according to a procedure described later. Here, the control device 7 and the storage device 6 are actually mainly composed of a computer and its peripheral devices.

Next, control of the H-section steel surface grinding apparatus X1 by the control device 7 will be described. In this case, as the H-section steel M, a semi-finished product obtained by perforating a main part at an intermediate position in the transport direction (longitudinal direction) (see FIG. 18) is used. Hereinafter, a procedure for removing the oxide film at the seam hole portion at a position in the longitudinal direction will be described.

First, an H-shaped steel M (semi-finished product) is formed on an electric roller 14D of the electric motor roller base 14 for loading into an H-shape whose web Mc is horizontal, and the outer surface of a right side flange Mb is electrically driven. The H-shaped steel M is placed such that the front end of the H-shaped steel M is located slightly behind the transmissive photoelectric sensors 51 in a state in which the H-shaped steel M is in contact with the flange 17a of the 14D. Next, after the cross-sectional dimension of the H-section steel M and the position data of the required grinding portion are stored in the storage device 6 by the keyboard 71, the telescopic cylinder 19 (piston rod 19b) of the rear transport drive mechanism 16 is contracted and moved. The section steel M is sandwiched so as to be pressed against the rear driving roller 16b by the rear driven roller 16f. Next, after the square frame A1 is positioned at the forward end of the movable range, the upper and lower web surface grinding heads 21 and 22 are formed.
The grinding heads 23 and 24 for the inner surface of the flange and the grinding heads 25 and 26 for the outer surface of the left and right flanges are respectively positioned at the origin positions (positions shown in FIGS. 1, 3 and 4) corresponding to the cross-sectional dimensions of the H-section steel M. A grinding start point described later (FIG. 11)
).

In this state, when an automatic operation command is given to the H-section steel surface grinding apparatus X1 by the keyboard 71, the apparatus X1 thereafter starts automatic operation, and first, the front and rear transport driving mechanisms 15, 16 are started. The drive motors 15d and 16d are rotated, whereby the H-shaped steel M is directed forward (to the left in FIGS. 1 and 2) by the rear drive roller 16b so as to penetrate the inside of the square frame A1. Transport. Then, when the front end face of the H-section steel M passes through the transmission type photoelectric sensors 51, 51, the pulse signal of the pulse generator 43 corresponding to the rotation angle of the rear length measuring disk 42 is output from that point.
The controller 7 counts the material feeding data of the mold steel M, and measures the material feeding amount of the H-shaped steel M by the rear length measuring disk 42. At the time when the H-section steel M is further fed forward and the front-side measuring disk 41 starts rotating by contacting the H-section steel M, the telescopic cylinder 19 of the front-side transport drive mechanism 15 contracts and moves, The H-shaped steel M is pressed and pinched by the front driven roller 15f against the front driving roller 15b, and the pulse signal of the pulse generator 43 according to the rotation angle of the front measuring disk 41 is also used as the material feeding data of the H-shaped steel M. It is adopted in the control device 7. Immediately before the H-section steel M is further fed forward and stops contacting the rear length-measuring disk 42, when the transmission type photoelectric sensor (not shown) captures the rear end face of the H-section steel M, the front side length measurement is performed. The measurement is switched to the measurement using the disk 41, but the stage is later.

Now, the H-section steel M is transported, and the measured value (feeding data) of the feeding amount by each of the length measuring disks 41 and 42 and the H-section M stored in the storage device 6 by the keyboard 71.
Is compared with the position data of the required grinding portion, and when the measured value matches the position data, the drive motors 15d, 16d of the front and rear transport drive mechanisms 15, 16 are stopped at that time, and the front and rear drive side rollers are stopped. H-section steel M with 15b and 16b
Stop the transport of That is, when the H-section steel M moves forward to the predetermined position corresponding to the position where the upper and lower web surface grinding heads 21 and 22 are disposed, where the grinding start point of the required portion of the web Mc shown in FIG. To stop the transfer.

Next, the upper web surface grinding head 21
Is moved downward by the hydraulic cylinder 27e for vertical movement, and the grinding head 22 for the lower web surface is moved upward by the hydraulic cylinder 27e for vertical movement, so that the disk grindstone W of the grinding heads 21 and 22 for the upper and lower web surfaces is moved. Web M
The upper and lower hydraulic cylinders 27e are pressed under a certain contact pressure on both upper and lower surfaces. At this time, the vertical movement of each hydraulic cylinder 27e for vertical movement is stopped based on the contact signal generated from the limit switch. At the same time, while the grinding is performed by rotating the disk grindstone W by the respective grinding motors 21b and 22b, the left and right hydraulic cylinders 27d of the respective grinding heads 21 and 22 are synchronized and slowly moved to the left. Thus, the first row of grinding from the grinding start point shown in the grinding pattern diagram (c) of FIG. 11 is performed.

When the first stroke reaches the end point at the left end, the hydraulic cylinder 10 is contracted to retract the square frame A1 by a predetermined amount, and then the grinding heads 21 and 22 are slowly moved backward, that is, rightward. Thereby, the grinding of the second row is performed. Hereinafter, the necessary number of rows are repeated in the same manner, and when the stroke of the last row reaches the end point and the predetermined grinding of the web Mc is completed, the left-right movement of the hydraulic cylinder 27d is stopped and the upper and lower web surface grinding heads 21 , 22 are respectively moved up and down by a hydraulic cylinder 27e for up and down movement to return to the home position.

When the grinding of the main part of the web Mc by the upper and lower web surface grinding heads 21 and 22 is completed in this way, the hydraulic cylinder 10 is extended to move the rectangular frame A
Advance one. Then, (a) and (b) of FIG.
The grinding start point of the required grinding portion of the flanges Ma and Mb shown in FIG. 4 is a rectangular frame until the grinding start points 23 and 24 for the inner surfaces of the upper and lower flanges and the grinding heads 25 and 26 for the outer surfaces of the right and left flanges are arranged. When A1 is advanced, the extension movement of the hydraulic cylinder 10 is stopped.

Next, the left flange outer surface grinding head 25 is moved rightward by the left / right moving hydraulic cylinder 29d, and the right flange outer surface grinding head 26 is moved leftward by the left / right moving hydraulic cylinder 29d. The disk grinding wheels W of the flange outer surface grinding heads 25 and 26 are brought into contact with the outer surfaces of the left and right flanges Ma and Mb. At this time, a contact signal is generated from the limit switch when each disk grindstone W is pressed against the outer surfaces of the upper and lower flanges Ma and Mb under a constant contact pressure. The left and right movement of the cylinder 29d is stopped.

On the other hand, the grinding head 2 for the upper and lower flange inner surfaces
3 and 24, the whetstone shafts 23a and 24a are respectively swung and fixed horizontally rightward (indicated by solid lines in FIG. 3).
The grinding heads 23 and 24 for the inner surfaces of the upper and lower flanges are moved to the right by hydraulic cylinders 28d for left and right movement, and the disk grindstone W is pressed against the inner surface of the right flange Mb under a constant contact pressure. The rightward movement of each hydraulic cylinder 28d for left / right movement is stopped based on the signal. At the same time, each of the grinding motors 23b, 24b, 25b,
While the grinding is performed by rotating the disk grindstone W by 26b, the hydraulic cylinder 10 is gradually contracted and moved to slowly move the square frame A1 backward. Thus, the first row of grinding from the grinding start point shown in the grinding pattern diagrams (a) and (b) of FIG. 11 is performed.

When the first stroke reaches a predetermined end point, the contraction of the hydraulic cylinder 10 is stopped and the rectangular frame A1
Is stopped, and the left and right flange outer surface grinding heads 25 and 26 are moved up, and simultaneously the upper and lower flange inner surface grinding heads 23 and 24 are moved up and down. 10 is gradually extended to send the square frame A1 slowly forward. Thereby, the grinding of the second row is performed. Hereinafter, the same number of lines are repeated in the same manner.

At this time, the inner surfaces of the flanges Ma and Mb to be ground by the upper and lower flange inner surface grinding heads 23 and 24 have heights equal to the left and right flange outer surface grinding heads 2.
Since the outer surfaces of the flanges Ma and Mb to be ground by the flanges 5 and 26 are less than half, the required number of rows is small, and the grinding is completed quickly.
Therefore, while the left and right flange outer surface grinding heads 25 and 26 continue their strokes as they are, the grinding wheel shafts 23a and 24a of the upper and lower flange inner surface grinding heads 23 and 24 are respectively swung to the left in the horizontal direction (two in FIG. 3). (The state shown by the dotted line). At the same time, the upper and lower flange inner surface grinding heads 23 and 24 are moved leftward by the left and right moving hydraulic cylinders 28d, respectively.
8e, the disc grinding wheels are moved to the grinding start point, and the respective disc grindstones W are pressed against the inner surface of the left-hand flange Ma to be ready for grinding. Then, when the square frame A1 reaches the forward position, grinding is started in the same manner as in the case of the right flange Mb.

When the predetermined grinding of the flanges Ma and Mb is completed, the extension and retraction of the hydraulic cylinder 10 is stopped, and the grinding heads 23 and 24 for the inner surfaces of the upper and lower flanges are moved rightward by the hydraulic cylinder 28d for left and right movement to return to the home position. Along with returning
The left and right flange outer surface grinding heads 25 and 26 are also moved left or right by hydraulic cylinders 29d for left and right movement to return to the origin position.

Thus, the grinding of one main part of the H-section steel M is completed. Then, when there is grinding of the next main part (the rear halfway position) of the H-section steel M, the above procedure is repeated,
When the grinding of all the main portions of the H-section steel M is completed, the drive motors 15d, 16d of the front and rear transport drive mechanisms 15, 16 are completed.
By rotating d, the H-shaped steel M is conveyed forward and sent out onto the electric roller 13D of the electric roller base 13 for unloading.

In this way, each of the grinding heads 21 to 26
The H-shaped steel M having completed the oxide film removal work by the cutting machine (not shown) provided on the downstream side (forward) in the transport direction of the H-shaped steel surface grinding apparatus X1 is shown by a two-dot chain line in FIG. It is cut at the position indicated by. As shown in FIG. 18, the cut H-shaped steel M is used as a connection material MBR on both front and rear sides.
-F, MBR-R and a central beam material MHR. As shown in FIG. 19, the front and rear sides of the connection material MBR-F, MBR-R and the center beam material MHR are connected to the front end (the left end in the figure) of the front connection material MBR-F in the vertical direction of the building Z. After being welded and fixed to the column member Za extending in the direction, it is transported to the construction site, and the rear end (the right end in the figure) of the front side connection material MBR-F and the front end (the left end in the figure) of the beam material MHR. To
The perforated seams TG,... Having the same pattern are abutted on both inner and outer surfaces of the flanges Ma and Mb (the inner surface is located at four places across the web Mc) and on both surfaces of the web Mc to align the positions of the holes. , Each seam plate TG from both sides with both flanges Ma, Mb and web Mc sandwiched between high strength bolts B
Assembled by tightening with T, ...

In the case of this embodiment, the H-section steel M is a web M
In a state where c is horizontal and H-shaped, a square frame A
1 and the front and rear transport drive mechanism 1
It is transported forward by 5,16. B-shaped frame A
1 upper and lower web surface grinding heads 21 supported on upper and lower horizontal beams A11 and A12 so as to be able to move horizontally and vertically.
22 is responsible for grinding the upper and lower surfaces of the horizontal web Mc. The upper and lower horizontal beams A1 of the square frame A1
The grinding heads 23, 24 for the inner surface of the flange, which are supported on the A1, A12, respectively, so as to be able to move left and right and up and down, can swing the grinding wheel shafts 23a, 24a to the left and right by 180 °, respectively. In the state where the direction is rightward, grinding of the inner surface of the vertical right flange Mb (the inner surface of the right flange Mb continuous with the web Mc) is performed;
With the grindstone shafts 23a and 24a turned to the left in the horizontal direction, the inner surface of the vertical left flange Ma (the inner surface of the left flange Ma that is continuous with the web Mc) can be ground.

On the other hand, the left and right flange outer surface grinding heads 25 and 26, which are supported on the upper horizontal beam portion A11 of the square frame A1 so as to be able to move left and right and up and down, are provided with both left and right vertical flanges Ma and Mb. Responsible for grinding the outer surface. Therefore, by these six grinding heads 21 to 26 in total,
The web Mc of the H-section steel M and the main surfaces of the flanges Ma and Mb conveyed to the inside of the square frame A1 can be ground.

The surface grinding of the H-section steel M mostly involves grinding the surfaces around the seam holes formed in the web Mc and the flanges Ma and Mb, and further, the grinding of the flanges Ma and Mb of the H-section steel M. Since the joint holes are symmetrically arranged in the vertical and horizontal directions across the web Mc, the flange M
In the grinding process of a and Mb, it is sufficient to grind the same position in the longitudinal direction of the H-section steel M in both the upper and lower directions. Naturally, both flanges M by the upper and lower flange inner surface grinding heads 23 and 24 are ground.
The grinding of the inner surfaces of a and Mb and the grinding of the outer surfaces of both flanges Ma and Mb by the left and right flange outer surface grinding heads 25 and 26 can be performed simultaneously, and four disk grinding wheels W are used at the same time. Highly efficient surface grinding can be performed. Therefore, it is possible to improve the work efficiency, improve the work environment, and reduce labor costs.

Further, on the pattern of the seam holes (hole groups) of the H-section steel M, the surface area of the web surface Mc which is individually ground up and down by the grinding heads 21 and 22 for each web surface, and the grinding head for the inner surface of each flange. The surface areas of the inner surfaces of the left and right flanges Ma and Mb that are individually ground by the right and left 23 and 24 and the outer surface areas of the right and left flanges Ma and Mb that are individually ground by the grinding heads 25 and 26 for the respective outer surfaces of the flanges are respectively approximately equal. Will match. For this reason, the wear time of the disk grindstones W substantially coincides with each other, and the disk grindstones W need only to be replaced at the same time in each of the grinding heads 21 to 26, which leads to an improvement in serviceability.

The grinding head 2 for the upper and lower flange inner surfaces
3 and 24 respectively move the grinding wheel shafts 23a and 24a
By swinging to 0 °, the left and right flanges M
Since the inner surfaces of a and Mb can be ground by one disk whetstone W, the disk whetstone W is not at both ends but at one end of the whetstone shafts 23a and 24a as compared with the second embodiment described later. The dimension from the grinding surface of the grinding wheel W to the opposite ends of the grinding heads 23 and 24 can be short, and the application range can be extended to the H-section steel M having a small dimension between the left and right flanges Ma and Mb.

Further, since the disk whetstone W does not wear unevenly, the surface to be ground can always maintain a constant surface accuracy. Then, a drilled portion at an intermediate position in the longitudinal direction of the H-section steel can be ground in the same manner as the both ends. This is also true for the second embodiment described later.

A hydraulic cylinder 10 for moving the square frame A1 in parallel with the material feeding direction by the front and rear transport driving mechanisms 15 and 16 is provided.
6 and a plurality of grinding portions (hole groups) that are separated from the H-section steel M by H
For a portion where the relative movement distance is long, such as the movement for aligning in the longitudinal direction of the section steel M, the H-section steel M is fed by the front and rear transport drive mechanisms 15 and 16 while the inside of the required grinding section ( When the relative movement distance is short, such as the movement for positioning each of the grinding heads 21 to 26 in the longitudinal direction of the H-section steel M (in the hole group), the movement of the square frame A1 due to the expansion and contraction of the hydraulic cylinder 10 Done by As described above, by properly using the front and rear transport drive mechanisms 15, 16 and the hydraulic cylinder 10, it is very effective in performing accurate and light positioning operation, particularly when grinding heavy large H-section steel M. It becomes something.

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIGS.

In FIG. 12 and FIG. 13, X2 is a surface grinding device for H-section steel.
In this embodiment, instead of the grinding heads 23 and 24 for the inner surface of the flange used in the surface grinding device X1 for the H-section steel of the first embodiment, grinding heads 23 'and 24' for the inner surface of the flange are applied. In addition, the flange inner surface grinding head 23 ', 2
Structures other than 4 ′ are the same as those in the first embodiment, and are denoted by the same reference numerals and description thereof is omitted.

That is, as shown in FIG. 12, the upper and lower flange inner surface grinding heads 23 'and 24' are slidably supported in the left-right direction with respect to the horizontal rail unit 28a via the slider 28b.

FIG. 13 is a longitudinal sectional view showing the upper flange inner surface grinding head 23 'as an example. In FIG. 13, the grinding head 23 ′ for the inner surface of the flange is provided with a grinding wheel rotating mechanism T ′ for rotating a grinding wheel shaft 23a ′ oriented in the horizontal direction by a grinding motor 23b, and this grinding wheel rotating mechanism T ′.
Along with the slider 28b, it is slidably supported in the vertical direction. A grinding head 23 'for the inner surface of the flange accommodating the grinding wheel rotating mechanism T' therein is a vertically long rectangular cylindrical case T4 which holds the grinding motor 23b at the upper end.
And a grinding head case T3 attached to the lower end of the cylindrical case T4 '. Cylindrical case T4
The drive pulley T5 is housed in the upper end of the '. Further, the grinding wheel shaft 23a 'has upper and lower ends protruding leftward and rightward from the inside of the grinding head case T3, and disk grindstones W, W are respectively rotatably mounted on both left and right ends thereof.

In the case of this embodiment, the left and right flange inner surface grinding heads 23 'and 24' can grind the inner surfaces of the left and right flanges Ma and Mb without providing a swing / fixing mechanism. It can be simple.

<Third Embodiment> Next, a third embodiment of the present invention will be described with reference to FIG.

In FIG. 14, X3 is a surface grinding device for H-section steel. In the surface grinding device X3 for H-section steel, the flange used in the surface grinding device X1 for H-section steel of the first embodiment is used. The configuration of the hydraulic cylinder 28d for left and right movement of the inner surface grinding heads 23 and 24 is changed. The configuration other than the hydraulic cylinder 28d is the same as that of the first embodiment, and the same reference numerals are given and the description is omitted.

That is, as shown in FIG. 14, the upper and lower flange inner surface grinding heads 23 and 24 are moved left and right by a single left and right hydraulic cylinder 28d.

More specifically, one end is connected to the left end of the slider 28b of the upper flange inner surface grinding head 23, and the other end is the slider 2 of the lower flange inner surface grinding head 24.
A first pulley 8 rotatably supported by the first wire 81 connected to the right end of the first wire 81b and the right end of the front surface of the lower horizontal beam portion A12 to turn one end of the first wire 81 leftward.
2 and are supported rotatably on the front surfaces of upper and lower brackets A11a and A12a projecting to the left from the upper and lower horizontal beam portions A11 and A12, respectively, so that the first wire 81 is provided from the outside of the left vertical column portion A13. Upper and lower horizontal beams A11, A
A pair of upper and lower second pulleys 83 and 8 that guide to the left along 12
A second wire 84 having one end connected to the left end of the slider 28b of the lower flange surface grinding head 24 and the other end connected to the right end of the slider 28b of the upper flange surface grinding head 23; A third pulley 85 that is rotatably supported on the front right end of the horizontal beam portion A11 and that folds one end of the second wire 84 leftward, and an upper horizontal beam portion A
11 and the bracket A11a, and between the lower horizontal beam portion A12 and the bracket A12a.
13, a pair of upper and lower fourth pulleys 86, 86 that guide leftward from the outside along the upper and lower horizontal beams A11, A12,
The upper and lower flange inner surface grinding heads 2 are formed by a single hydraulic cylinder 28d of the upper flange inner surface grinding head 23.
3, 24 are moved left and right.

In this case, the hydraulic cylinder 28d for left and right movement
Is only required to be provided on one of the upper and lower horizontal beam portions A11 and A12, and since the left and right movements of the upper and lower flange inner surface grinding heads 23 and 24 are synchronized by both wires 81 and 84, it is very simple. Configuration.

<Fourth Embodiment> Next, a fourth embodiment of the present invention will be described with reference to FIG.

In FIG. 15, X4 is an H-section steel surface grinding apparatus. The H-section steel surface grinding apparatus X4 uses the web used in the H-section steel surface grinding apparatus X1 of the first embodiment. The configuration of the hydraulic cylinder 27d for moving the surface grinding heads 21 and 22 left and right is changed. The hydraulic cylinder 2
The other configuration except for 7d is the same as that of the first embodiment, and the same reference numerals are given and the description is omitted.

That is, as shown in FIG. 15, the upper and lower web surface grinding heads 21 and 22 are moved left and right by a single left and right hydraulic cylinder 27d.

More specifically, one end is connected to the left end (the right end in the figure) of the slider 27b of the upper web surface grinding head 21, and the other end is connected to the right end (the right end) of the slider 27b of the lower web surface grinding head 22. The first wire 91 connected to the left end (in the figure) and the right end of the rear surface (the front surface in the figure) of the lower horizontal beam portion A12 are rotatably supported, and one end of the first wire 91 is leftward. The first pulley 92 is folded back toward the right (in the figure), and is rotatably supported on the rear surfaces of the upper and lower brackets A11a and A12a. Horizontal beams A11, A
A pair of upper and lower second guides leading left (right in the figure) along 12
One end of the pulley 93 is connected to the left end (right end in the figure) of the lower web surface grinding head 22, and the other end is connected to the right end of the slider 27 b of the upper web surface grinding head 21 (in the figure). The second wire 9 connected to the left end)
4 and the right end of the rear surface of the upper horizontal beam portion A11 is rotatably supported, and one end of the second wire 94 is leftward (rightward in the figure).
And a third pulley 95 that is turned back toward the upper part and between the upper horizontal beam part A11 and the bracket A11a and between the lower horizontal beam part A12 and the bracket A12a so as to be rotatably supported. A pair of upper and lower fourth pulleys 9 that guide 94 to the left (to the right in the figure) along the upper and lower horizontal beams A11 and A12 from outside the left vertical column A13.
6 and 96, and the upper and lower web surface grinding heads 21 and 22 are moved left and right by a single hydraulic cylinder 27d of the upper web surface grinding head 22.

In this case, the hydraulic cylinder 27d for left and right movement
May be provided on any one of the upper and lower horizontal beam portions A11 and A12.
Since the left and right movements 1 and 22 are synchronized by the wires 91 and 94, a very simple configuration can be achieved.

<Other Embodiments> The present invention is not limited to the above embodiments, but includes various other modifications. For example, in each embodiment, each of the grinding heads 21 to 26 is provided on both front and rear surfaces of a single square frame A1.
16 and 17, as shown in FIGS. 16 and 17, the H-shaped steel surface grinding device X5 in which the square frame A1 and the square frame A2 of the same shape arranged behind the square frame A1 are arranged to face each other. The front and rear square frames A1 and A2 are connected to the base X1a via the hydraulic cylinder 10 so as to be movable in the front and rear direction, and the upper and lower web surface grinding heads 21 and 22 are rearwardly square. On the front surface of the upper and lower horizontal beam portions A11 and A12 of the frame A2, upper and lower flange inner surface grinding heads 23 and 24 and left and right flange outer surface grinding heads 25 and 26 are provided with the upper horizontal beam portion A11 of the front square frame A1. May be provided on the rear surface so as to be able to move left and right and up and down, respectively. In this case, the grinding heads 23 and 24 for the inner surfaces of the flanges and the grinding heads 2 for the outer surfaces of the flanges are provided for the grinding heads 21 and 22 for the web surface.
Since the drive strokes of the rectangular frame A1 can be shortened, the structural and functional advantages can be obtained.

In the above embodiments, the drive motors 15d, 16d of the front and rear transport drive mechanisms 15, 16 are used.
Are synchronized by the inverter, but a single drive motor may be used to mechanically drive the drive rollers of the front and rear transport drive mechanisms mechanically using a shaft, a chain and a sprocket. In this case, the rotation shaft of each drive roller extends downward or upward, respectively, and the chain rotates around the sprockets that are integrally connected to the respective extended ends by rotating around the sprockets, thereby rotating in synchronization.

Further, in each of the above embodiments, the hydraulic cylinder 10 was used as the frame drive mechanism for linearly moving the square frame A1, but instead of this hydraulic cylinder, a frame drive mechanism comprising a screw type actuator such as a ball screw was used. Needless to say, may be used.

In each of the above embodiments, the square frame A1 (and A2) is configured to be movable in the front-rear direction by the expansion and contraction of the hydraulic cylinder 10 with respect to the base X1a. The H-shaped steel may be fixed so as not to be movable in the front-rear direction, and may be conveyed in the front-rear direction only by the material feeding means such as the front and rear conveyance drive mechanisms. In this case, only the front and rear transport drive mechanisms need to be controlled when transporting the H-section steel, and the control system can be simplified.

Further, in each of the above embodiments, only the case where the intermediate position in the longitudinal direction of the H-section steel M is ground has been described. However, the front end and the rear end of the H-section steel can be ground using this apparatus. Of course.

Needless to say, a chain and a sprocket may be used instead of the wires and pulleys used in the third and fourth embodiments.

[0088]

As described above, according to the surface grinding apparatus for H-section steel according to the first aspect of the present invention, the inner surfaces of both flanges are ground by the grinding head for the inner surface of the flange, and the two flanges are ground by the grinding head for the outer surface of the flange. Can simultaneously grind the outer surface of
High-efficiency surface grinding using four disk-shaped grinding tools can be performed at the same time, and the grinding surface area by each web surface grinding head, each flange inner surface grinding head, and each flange outer surface grinding head is almost the same. Therefore, the wear time of the disc-shaped grinding tools is also substantially the same, and the disc-shaped grinding tools need only be replaced simultaneously with each grinding head, so that the serviceability can be improved. In addition, the tool axis of the grinding head for the inner surface of the flange is turned 180 ° left and right by the tool axis swinging and fixing mechanism.
The inner surface of the left and right flanges can be ground with a single disk-shaped grinding tool, so that the disk-shaped grinding tool is only at one end of the tool shaft, not at both ends. Since the dimension from the working surface to the opposite end of the grinding head is short, it is possible to grind an H-section steel having a small dimension between the left and right flanges. Furthermore, since the disc-shaped grinding tool does not wear unevenly, the surface to be ground always keeps a constant surface accuracy. Then, a drilled portion at an intermediate position in the longitudinal direction of the H-section steel can be ground in the same manner as the both ends. This is also true of claim 2.

According to the surface grinding apparatus for an H-section steel according to the second aspect of the present invention, the inner surfaces of the left and right flanges are attached to both ends of the left and right flanges by attaching disk-shaped grinding tools to both ends of the tool shaft oriented in the horizontal direction. The left and right disc-shaped grinding tools can be used to separately grind the left and right, and the structure of the grinding head for the inner surface of the flange can be simplified by eliminating the need for a tool shaft swinging / fixing mechanism.

According to the surface grinding device for an H-section steel according to the third aspect of the present invention, by providing a frame driving mechanism for moving the frame in parallel with the material feeding direction, the relative movement distance can be adjusted. The frame driving mechanism and the material feeding means can be selectively used, and the positioning operation can be performed accurately and lightly particularly when grinding a large heavy H-section steel.

According to the surface grinding apparatus for an H-section steel according to the fourth aspect of the present invention, the H-section steel is transported to a position to be processed based on the position data stored in the storage means, and each grinding head is moved. By automatically grinding the main part of the web and the upper and lower flanges of the H-section steel by moving it left and right and up and down, it is possible to realize improvement of work efficiency, improvement of work environment and reduction of labor cost.

Further, according to the surface grinding apparatus for an H-section steel according to the fifth aspect of the present invention, one of the pair of vertically opposed grinding heads is directly displaced by one actuator to directly displace one of the grinding heads. The left and right grinding heads are displaced relative to one grinding head in the left and right direction via a wire, so the left and right movements of a pair of grinding heads can be synchronized by a single hydraulic cylinder, making for a very simple configuration. it can.

[Brief description of the drawings]

FIG. 1 is a plan view of a surface grinding device for an H-section steel according to a first embodiment of the present invention.

FIG. 2 is a right side view of the surface grinding device for H-section steel.

FIG. 3 is a diagram of the H-shape steel surface grinding apparatus viewed from a grinding head for an inner surface of a flange and a grinding head for an outer surface of a flange (front side).

FIG. 4 is a view of the H-section steel surface grinding apparatus as viewed from a web surface grinding head side (rear side).

FIG. 5 is a cross-sectional view taken along line CC of FIG. 1;

FIG. 6 is a block diagram showing a configuration of a control system of the H-section steel surface grinding apparatus.

FIG. 7 is a longitudinal sectional view of the upper flange inner surface grinding head cut along a surface along the left-right direction.

FIG. 8 is a longitudinal sectional view of the upper portion of the upper grinding head for the inner surface of the flange, which is cut along a surface extending in the front-rear direction.

FIG. 9 is a cross-sectional view of the upper flange inner surface grinding head similarly cut along a plane along the horizontal direction near the upper end of the holding case.

FIG. 10 is a cross-sectional view of the swing / fixing mechanism cut along a plane along the horizontal direction.

FIG. 11A is an explanatory view illustrating a grinding pattern by a grinding head for the outer surface of the flange. (B)
FIG. 4 is an explanatory view for explaining a grinding pattern by the grinding head for the inner surface of the flange. (C) is an explanatory view similarly explaining a grinding pattern by a web surface grinding head.

FIG. 12 is a view of an H-section steel surface grinding apparatus according to a second embodiment of the present invention viewed from the side of a grinding head for an inner surface of a flange and a grinding head for an outer surface of a flange (front side).

FIG. 13 is a longitudinal sectional view of the upper flange inner surface grinding head cut along a surface along the left-right direction.

FIG. 14 is a view of an H-section steel surface grinding apparatus according to a third embodiment of the present invention, as viewed from a flange inner surface grinding head and a flange outer surface grinding head side (front side).

FIG. 15 is a view of an H-section steel surface grinding apparatus according to a fourth embodiment of the present invention as viewed from a web surface grinding head side (rear side).

FIG. 16 is a plan view of a surface grinding device for H-section steel according to another embodiment of the present invention.

FIG. 17 is a right side view of the H-section steel surface grinding apparatus.

FIG. 18 is a perspective view of an H-section steel that has been perforated to be a semi-finished product.

FIG. 19 is a perspective view showing a use state of an H-shaped steel product.

FIG. 20 is an explanatory view of a conventional manual grinding of an H-section steel.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 material feeding device (material feeding means) 10 hydraulic cylinder (frame driving mechanism) 21, 22 grinding head for web surface 23, 24 grinding head for flange inner surface 25, 26 grinding head for flange outer surface 21 a to 26 a grinding wheel shaft (tool shaft) 27d, 27e, 28d, 28e, 29d, 29e Hydraulic cylinder (grinding head drive mechanism) 23 ', 24' Grinding head for flange inner surface 23a ', 24a' Grinding wheel shaft (tool shaft) 4 Length measuring device (length measuring means) 5 End face detection device (end face detection means) 6 Storage device (storage means) 7 Control device (control means) 81, 91 First wire (wire) 84, 94 Second wire (wire) A1, A2 Square frame (frame) A11 , A12 Horizontal beam (horizontal part) K Swing / fixing mechanism M H-section steel Ma, Mb Flange Mc Web W Disk whetstone (disk shape) Cutting tool) X1, X2, X3, X4, X5H section steel surfaces grinding machine

Claims (5)

[Claims] 1. A surface grinding apparatus for an H-section steel for grinding a web and main parts of both flanges of the H-section steel, respectively, wherein a square frame and a H-section steel to be ground have a horizontal web. A material feeding means for transporting in a longitudinal direction so as to penetrate the inside of the frame in an H-shaped state, and supported to be movable left and right and up and down along the upper and lower horizontal portions of the frame, respectively. A pair of upper and lower web surface grinding heads with the tool axis oriented vertically, and supported to be able to move left and right and up and down along the upper and lower horizontal parts of the frame, respectively, with the tool axis facing left and right in the horizontal direction, respectively. A pair of upper and lower grinding heads for the inner surface of the flange having a tool axis swinging / fixing mechanism for turning to the right direction, and facing left and right across the grinding head for each inner surface of the flange. A pair of left and right flange outer grinding heads, each of which is supported so as to be able to move left and right and up and down freely at the facing position of the frame, and each of which has a tool shaft oriented in the horizontal direction, and one end of the tool shaft of each of the above grinding heads. A disk-shaped grinding tool that is connected to the rotating body and presses the respective grinding action surfaces against the upper and lower surfaces of the web and the inner and outer surfaces of both flanges to grind the upper and lower surfaces of the web and the inner and outer surfaces of both flanges; A surface grinding apparatus for an H-section steel, comprising: a grinding head moving mechanism for displacing in a left-right direction and a vertical direction, respectively. 2. A surface grinding apparatus for an H-section steel for grinding a main portion of a web and both flanges of the H-section steel, wherein the H-shaped frame to be ground and the H-section steel to be ground are horizontally aligned. A material feeding means for transporting in a longitudinal direction so as to penetrate the inside of the frame in an H-shaped state, and supported to be movable left and right and up and down along the upper and lower horizontal portions of the frame, respectively. A pair of upper and lower web surface grinding heads with the tool axis oriented vertically, and supported vertically and freely movable respectively along the upper and lower horizontal parts of the frame, and the tool axis is oriented horizontally. A pair of upper and lower flange inner surface grinding heads, and are supported so as to be able to move left and right and up and down freely at opposing positions of the frame facing left and right across the respective flange inner surface grinding heads, A pair of left and right grinding heads for the outer surface of the flange, each having the tool axis oriented horizontally, one end of the tool shaft of the grinding head for the web surface and the grinding head for the outer surface of the flange, and the tool shaft of the grinding head for the inner surface of the flange. A disk-shaped grinding tool that is rotatably connected to both ends of the web and presses the respective grinding action surfaces against the upper and lower surfaces of the web and the inner and outer surfaces of both flanges to grind the upper and lower surfaces of the web and the inner and outer surfaces of both flanges; A grinding head moving mechanism for displacing each of the grinding heads in the left-right direction and the up-down direction, respectively. 3. The frame is provided with a frame drive mechanism for moving the frame in a direction parallel to a feeding direction by a feeding unit. A surface grinding apparatus for an H-section steel, wherein the apparatus is configured to selectively drive both a frame driving mechanism and a material feeding means. 4. A length measuring means for measuring a feeding distance by the feeding means, an end face detecting means for detecting an end face position in a transfer direction of the H-section steel conveyed by the feeding means, Storage means for storing position data to be processed of the section steel; and controlling the material feeding means and the grinding head moving mechanism based on the position data stored in the storage means and the outputs from the length measuring means and the end face detecting means. The surface grinding apparatus for an H-section steel according to any one of claims 1 to 3, further comprising a control unit. 5. A single actuator for directly displacing one of a pair of vertically opposing grinding heads as the grinding head moving means, and the other grinding head includes the one grinding head. The surface grinding apparatus for H-section steel according to claim 1 or 2, wherein the grinding head is connected to the grinding head via a wire so as to be displaceable in the left-right direction.