JPS5835813B2 - Shaped steel processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a new section steel processing device, and more specifically, for example, parting groove processing of H-section steel used in building materials, etc.
The present invention relates to a section steel processing device exclusively for processing section steel, which performs bevel processing and the like using a band saw.

Conventionally, bevel processing of H-beams used in steel construction, etc.
Gas cutting (fusion cutting) was commonly used, but recently, milling processing using a profile milling cutter has gradually been used.

The former processing method using gas cutting has problems in hardening of the cut portion due to the influence of heat and in maintaining accuracy such as surface roughness.

Therefore, secondary processing (sandering, etc.) is required, which requires a lot of effort and time, and has the disadvantage that the efficiency of one operation is extremely low.

The latter method using milling has good machining accuracy, but the life of the cutting tool is short.

In addition, it is necessary to re-grind the tool and replace the tool due to differences in the bevel angle, etc. Therefore, this case also has the drawback of poor work efficiency.

This invention was devised in order to effectively solve the problems of the conventional processing means, and its main purpose is to simplify the positioning operation of the workpiece and to The object of the present invention is to provide a section steel processing device that can efficiently perform groove processing and the like.

Hereinafter, a preferred embodiment of the present invention will be described based on the accompanying drawings.

1 to 4, the shaped steel processing apparatus 1 of the present invention mainly consists of a workpiece support table 5 installed on a base 3, and a workpiece support table 5 installed on one side of the workpiece support table 5 in the longitudinal direction. A work clamp device 7, a work positioning device 9 provided on the front side wall of the work support table 5 perpendicular to the work transfer direction X, a work support device 11 attached to the lower side wall of the work clamp device I, and the workpiece A rotating base 13 is rotatably placed on the base 3 on one side of the support table 5 in the workpiece conveyance direction X.
The work clamping device 7 is mounted on the rotating base 13.
It consists of a cutting device 16 consisting of a housing 15 for supporting a cutting tool that can freely approach and move away from the workpiece W clamped by f.

The workpiece support table 5 installed on the base 3 is provided in a direction perpendicular to the transport direction X of the workpiece W, as shown in FIGS. 5, 6, and 7. A support plate 17 having an inverted U-shaped cross section and two transfer rollers 19a provided in parallel on both sides of the support plate 17.

19b, and a guide roller 21 arranged in parallel on one side of the one transfer roller 19b.

The support plate 17 is supported by a column 23 erected on the base 3, and is supported by a transfer roller 19a.

Both ends of the guide roller 19b and the guide roller 21 are connected to the support column 23.
It is rotatably supported by a bracket 25 that stands vertically upward.

The upper surface of the support plate 17 and the transfer rollers 19a, 1
The upper surface of 9b is configured to be flush with the top surface, and this allows the transferred workpiece W to be smoothly moved in the workpiece transfer direction X.
It is designed so that it can be transported.

Transfer rollers 19a, 1 supported by the bracket 25
A sprocket 29 is attached to each of the rotation support shafts 27 of 9b, and a chain 35 that is passed around a drive sprocket 33 attached to the tip of a drive shaft 31, which will be described later, is hooked to and rotated by the sprocket 29. ing.

A drive shaft 31 to which a drive sprocket 33 is attached is attached to 1ljW below the guide roller 21, and a manual handle 37 is provided at the base end of this drive shaft 31.

Therefore, when an operator or the like rotates this manual handle 37, the drive sprocket 33 of the drive shaft 31 and the rotation support shaft 2
The transfer roller 19a is connected to the sprocket 29 of No. 7 via a chain 35 which is rotated.

19b rotates in a predetermined direction, and the work W placed on the work support table 5 can be transferred in the transport direction X.

Next, as shown in FIGS. 8 to 11, the work clamp device I installed on one side of the work support table 5 in the longitudinal direction is integrally installed at a lower part of one side of the support plate 17 at a predetermined position. Long base plates 39 are slidably arranged side by side.

On this base plate 39, as shown in FIG.
A work clamp member 43 that can be moved up and down is provided.

The guide portion 41 includes two guide plates 45° 47 that are erected in a direction perpendicular to the support plate 17 and spaced apart from each other by a predetermined distance.
Two holding plates 49a and 49b are arranged in parallel at right angles on the backs of each of the holding plates 49a and 49b,
45 47 49 Each plate that constitutes these guide parts 41 is composed of a back plate 51 installed between them.
a 49 b 51 are fixed on the base plate 39 via rib 9 nuts 53.55.

In addition, the proximal end 61 of the clamp support 59 is located in the elongated space 51 formed by the two guide plates 4547, the holding plates 49a and 49b, and the back plate 51. It is engaged along the side wall of .47 and between this plate so as to be able to move up and down.

A screw hole 63 is bored in the center of the base end portion 61,
A threaded rod 65 for raising and lowering the clamp support body 59 is screwed into this screw hole 63.

This threaded rod 65 is inserted into the space 57, and its upper part is a bearing 6 installed on the guide plates 45, 47.
7, and a knob 69 for rotating the threaded rod 65 is attached to its upper end.

A threaded rod 6 is disposed between the bottom surface of the proximal end 61 of the clamp support 59 located in the space 57 and the support member 71 attached to the lower part of the inner wall of the guide plate 45.
A coil-shaped leaf spring 73 is fitted to cover the lower end of the spring 5.

This leaf spring 73 has the function of constantly urging the clamp support body 59 upward and the function of preventing dust, chips, etc. from adhering to the threaded rod 65.

Further, the head 75 of the clamp support 59 is provided with an upper clamp base 79 whose center portion is rotatably supported via a shaft 77, and both ends of the upper flange base 79 are provided with the guide plates. Work W between 4547
Work holding members 81, 81 for clamping the parts are added.

A fluid cylinder 83 is installed inside each of the work holding members 81, 81, and a contact member 85 that comes into contact with the work W+ is attached to the tip of the rod of the fluid cylinder 83.

Next, below the upper clamp base γ9 attached to the head 75 of the clamp support 59, that is, on the base plate 39, a lower clamp base 87 similar to the upper clamp base 79 rotates via a shaft 89. It can be installed freely.

Note that the lower clamp base 87 has exactly the same configuration as the upper clamp base 79, so a description thereof will be omitted, and the same reference numerals will be used in the following description.

Further, the shaft 89 that supports the lower clamp base 87 is provided on the same straight line as the shaft 77 that rotatably supports the upper clamp base 79, so that the upper and lower clamp bases 79 and 87 act simultaneously. The vertical positions at which the work W is clamped are also exactly the same.

Next, a screw hole 91 is provided at one end of the base plate 39 that supports the lower clamp base 8T, and an ID member 93 is added, and the tip of a threaded rod 95 is screwed into this screw hole 91. .

The intermediate portion of the threaded rod 95 is rotatably supported by a bearing 99 on a support plate 97 provided upright on the base 3, and a bevel gear 101 is fitted to the base end of the threaded rod 95. There is.

As shown in FIGS. 9 and 10, this bevel gear 101 meshes with a bevel gear 105 added to the tip of the handle shaft 103, and a manual handle 107 is added to the base end of the handle shaft 103. It is attached.

Next, the workpiece positioning device 9 provided on the front side wall of the workpiece support table 5 perpendicular to the workpiece conveyance direction Workpiece conveyance direction
The base plate positioning device 109 positions the workpiece W in the direction Y perpendicular to the workpiece transfer direction X, and the workpiece stopper device 111 positions the workpiece W in the workpiece conveyance direction X.

The base plate positioning device 109 is shown in FIGS.
As shown in FIG.
5 is rotatably provided, and this positioning rod 115 is attached parallel to the upper surface of the workpiece support table 5.

A handle 111 for rotating the positioning rod 115 is integrally provided at one end of the positioning rod 115, and a notch is provided at one side of the handle 117 and approximately in the middle thereof. Stopper member 119,1
21 are provided.

Note that this notch is used in the first section described below. Second. This makes it easy to release from the third positioning pieces 127, 129, 131.

A positioning rod 123 is provided below the positioning rod 115, parallel to the positioning rod 115 and spaced apart from it by a predetermined distance, and having a threaded portion extending over approximately the entire length Q.

Both ends of the position setting rod 123 are attached via support brackets 125 to the side walls of the support plate 97 that supports the workpiece support table 5.
The threaded part l is the first positioning piece 12 for cutting off.
7, a second positioning piece 129 for the inner groove, and a third positioning piece 131 for the external light are slidably screwed into each other.

Each first, second... 3rd positioning piece 127°129.13
1 is formed into a disk shape, and its outer peripheral surface G has a plurality of stopper grooves 133 (in this embodiment, 6
6) are bored at 0 degree intervals, and the surfaces between the stopper grooves 133 are knurled to prevent slipping.

Further, on the side wall of the support plate 97, each first. Second,
Facing the third positioning pieces 127, 129, 131,
Stopper plate N35a 135b.

tsu 135C is attached to one end.

This stopper plate N35a 135b.

As shown in FIGS. 13 and 14, the hook 135c includes a hook portion 137 that engages with the stopper groove 133 of each of the pieces 127, 129, and 131, and a hook portion 137 that engages and disengages from the stopper groove 133. The stopper plates 135a, 135b, 135c are
It is made of an elastic material (for example, a spring plate).

With the above configuration, in order to position the workpiece support table 5 in the Y direction, that is, in the direction perpendicular to the transport direction X of the workpiece W, the first . Second,
One of the third positioning pieces 127, 129, 131 is slid along the position setting rod 123, and the hook portion 137 of the stopper plate 135a, 135b, 135c is engaged with the stopper groove 133 and fixed at a predetermined position.

By rotating the manual handle 107 provided at the lower part of the workpiece clamping device 7, the workpiece support table 5 slides, and the stopper member 119 of the positioning iron 115 moves along with the workpiece support table 5. 12
1 is still in contact with any of the fixed first, second, and third positioning pieces 127, 129, and 131.

The positioning of the workpiece W in the Y direction is completed.

Next, the workpiece stopper device 111 that positions the workpiece W in the workpiece conveyance direction It is rotatably attached via a support bracket 141.

This work stopper device 111 includes a rotary support shaft 143 rotatably supported by the support bracket 141;
Arm member 1 erected on the circumferential surface of this rotation support shaft 143
45, a stopper plate 147 attached to the tip of the arm member 145, and a stopper screw 149.

The stopper plate 141 and the stopper screw 149 are connected to the support plate 17 around the rotation support shaft 143 via a rotation handle 151 provided on the rotation support shaft 143.
and rotates along the side wall of the base plate 39.

The stopper screw 149 provided inside the stopper plate 147, that is, on the base plate 39 side, has a 17th stopper screw 149.
As shown in the figure, a disc-shaped abutment member 153 attached to its tip is configured to be extendable and retractable via a threaded rod 155.

The stopper screw 149 is used when positioning the workpiece W near the unloading end of the workpiece support table 5, and the stopper plate 147 is used when positioning the workpiece W at a position slightly away from the unloading end. It is.

Therefore, the positioning range of the workpiece W in the workpiece conveyance direction X can be performed within the space l between at least the side surface of the abutting member 153 and the inner wall of the stopper plate 147, as shown in FIG.

That is, when positioning the workpiece W using the stopper screw 149, it is used to set a small depth of cut of the cutting tool 157, which will be described later, and when positioning the workpiece W using the stopper plate 147, it is used to reduce the depth of cut. This is used when setting a large value.

Next, as shown in FIG. 16, the work support device 11 that supports the bottom of the work W protruding from the unloading end of the work support table 5 is attached to the bottom of the guide plate 47 of the work clamp device 7 with a work support member 11a. is provided to protrude along the side edge of the base plate 39, and the upper surface of the workpiece support member 11a is installed flush with the upper surface of the workpiece support table 5.

The function of this workpiece support device 11 is mainly to prevent shaking, shaking, displacement, etc. during workpiece processing, and to enable processing to be performed in a stable state.

Although the work supporting device 11 supports the bottom of the work W, it may also support the top or side surface of the work W.

Next, the operating method of the work clamping device 7 and the work positioning device 9 will be briefly explained.

First, after the workpiece W is transported or placed on the workpiece support table 5 at a predetermined position, the workpiece W is positioned in the transporting direction X.

Positioning of the workpiece W in the transport direction X is to determine how much the processed end of the workpiece W should protrude from the delivery end of the workpiece support table 5. It differs depending on the bevel processing).

In other words, the shaped steel processing apparatus 1 of the present invention processes the cutting tool 157 as a band saw for punching, outer beveling, and inner beveling of a shaped steel used for building materials such as H-beams. be.

First, the order of the operation method is to position the workpiece W in the transport direction X.

As described above, this positioning operation varies depending on the cutting depth of the workpiece W, and either the stopper plate 147 or the stopper screw 149 is used.

In this operation, one worker holds the rotary handle 151 and rotates it around the rotary support shaft 143, so that either the stopper plate 147 or the stopper screw 149 to be used faces the workpiece W on the workpiece support table 5. let

Then, the processed end of the workpiece W is positioned by abutting against the stopper plate 147 or the stopper screw 149.

Next, in the clamping operation of the workpiece W, the height positions of the clamp support body 59 and the upper clamp base 79 are first adjusted on the workpiece support table 5 (according to the size of the workpiece W placed thereon).

This height position adjustment is achieved by rotating a knob 69 attached to the upper end of the threaded rod 65, and the rotation of the threaded rod 65 causes the base end 61 of the clamp support 59 to expand and contract the leaf spring 73 in the space 57. It moves up and down along the threaded rod 65 while moving.

In this way, the clamp support 59 faces the workpiece Wf.
When the height position adjustment work is completed, next, the fluid cylinders 83 provided at both ends of the upper and lower clamp bases 79°87 are extended by operating the operation box 233, which will be described later, and the contact member provided at the tip of the rod is activated. 85 is brought into contact with the wall surface of the workpiece W, and the workpiece W is firmly clamped between the guide plate 45 and 47 as shown in FIGS. 8 and 10.

After the clamping operation of the workpiece W is completed, in order to set the processing position of the workpiece W with respect to the cutting tool 157, a positioning operation is next performed in the lateral direction of the base plate 39, that is, in the direction Y orthogonal to the workpiece conveyance direction X.

Similar to the positioning work in the X direction described above, this lateral position adjustment differs depending on the type of workpiece W to be machined. The third positioning pieces 127°, 129, and 131 are set at appropriate positions.

Then, from this state, turn the manual handle 1 shown in Figure 9.
07 in either direction, the handle shaft 10
3 rotates, and the threaded rod 95 rotates via the bevel gear 101 that meshes with this bevel gear 105.

When this threaded rod 95 rotates, the base plate 39 advances and retreats in the Y direction via the guide member 93, and the set first
, the stopper member 119 or 121 of the positioning rod 115 comes into contact with one of the second and third positioning pieces 127, 129, 131, and at this point the positioning work of the base plate 39 in the Y direction is completed.

Next, on the processing side of the workpiece W, the cutting device 16 installed on the base 3 mainly connects the rotating base 13 rotatably installed on the base 3 and the rotating base 13 as described above.
It consists of a housing 15 for supporting a cutting tool, whose one end is pivotably supported on the top.

The base end portion of the housing 15 is shown in FIGS. 1, 2, and 3.
19 and 20 Q As shown, the pivot shaft 1 is provided on the workpiece support table 5 side on the pivot base 13.
58, and is provided so as to be rotatably erected.

A driven wheel 159 and a driving wheel 161 are arranged side by side at a predetermined interval in the upper and lower parts of the housing 15 facing the work support table 5 side.
, 161, a band-shaped cutting tool 157 (a band saw is used in this embodiment) is passed over in an endless manner.

The drive wheel 161 is connected to a drive motor 63 (see FIGS. 1 and 2) provided at the back of the housing 15, and the drive wheel 161. A cutting tool 157, which is passed around a driven wheel 159, rotates in a predetermined direction at a constant speed.

A guide member 165 having a concave cross section is provided upright on one side of the housing 15, and the guide member 165 supports the back surface of the tool 157 and supports the guide member 1.
Movable bracket 16 that can be raised and lowered along both side edges of 65
7 and a fixing bracket 169 are provided.

An elevating screw rod 171 vertically installed approximately at the center of the width direction of the guy 115 material 165 is screwed into approximately the center of the movable bracket 167 and the fixed bracket 169 in the longitudinal direction. By rotating a handle 173 provided at the upper end, the movable bracket 167 is raised and lowered.

Movable bracket 1 supporting the back of the cutting tool 157
A Q-U-shaped groove 175 is formed at the tip of the fixing bracket 67 and the fixed bracket 169, as shown in FIG.
5 includes guide chips 177a and 177b that support the cutting tool 157 while holding both sides thereof, and the cutting tool 1.
A guide roller 179 is provided to guide the back surface of 57.

As for the material of the guide chips 177a and 177b and the guide roller 179, it is preferable to use super steel alloy or the like since high heat is generated due to friction with the cutting tool 157.

Next, a cutting tool 1 is placed at the bottom of the movable bracket 167.
57 is pressed and supported with a predetermined pressure, and the cutting tool 1
A vibration prevention device 181 for the cutting tool 157 is provided to absorb and alleviate vibrations, shakes, etc. of the cutting tool 157.

This vibration prevention device 181 includes a vibration prevention member 183 that supports the back surface of the cutting tool 157, as shown in the 221m+
The side center of the vibration prevention member 133 is rotatably supported, and one end is attached to the swing arm 185 attached to the movable bracket 167 (I is swingable), and the back of this swing arm 185 is elastically supported. It is composed of a buffer member 187 that supports the

The buffer member 187 has a tip connected to the back of the swing arm 185 via a pin or the like, and a rear end that slides along a guide hole 189 of a support bracket 188 suspended from the bottom of the movable bracket 167. support rod 19
1, a nut 193 provided at the tip of the support rod 191, and a spring 195 interposed between the support bracket 188.

As a result, swing arm 185 and vibration prevention member 18
3 always abuts and supports the back surface of the cutting tool 157 due to the elastic force of the spring 195, and also supports the cutting tool 157.
7 vibrates during cutting, the swing arm 185 rotates in the direction of the arrow in FIG.
91 to the right, and the vibrations of the cutting tool 157 are absorbed by the elastic force of the spring 195.

Note that the elastic force of the spring 195 is the same as that of the support rod 191.
By moving the nut 193 provided at the tip of Q, it can be set arbitrarily.

197 also connects the movable bracket 167 to the guide member 16.
This is a lock handle for fixing the item 5 in a predetermined position.

Next, the workpiece depth adjustment device 199 that controls the depth of cut of the cutting tool 157 into the machining surface of the workpiece W provided between the housing 15 of the cutting device 16 and the turning base 13 is the 23rd workpiece depth adjusting device 199. As shown in the figure, it is composed of a swing cylinder 201, a limit switch 203, and a fluid control device (not shown) that controls the operation of the swing cylinder 201.

The swing cylinder 201 has its piston rod 2
05 is rotatably connected to the back side wall of the housing 15, and the base end of the cylinder 207 is rotatably connected to a support frame 209Q installed on the swing base 13.

The inside of the cylinder 207 is connected to the expansion side pressure oil chamber 21 via a piston 211 added to the base end of the piston rod 205.
3 and a line side pressure oil chamber 215, and a correction spring 217 is installed inside the line side pressure oil chamber 215.

The tip of the piston rod 205 is connected to the upper part of the cylinder 207 (the actuator 22 of the limit switch 203 attached thereto) via an L-shaped guide bracket 219.
a plurality of fixed dogs 225 in contact with the movable dog 2;
27 are provided.

The movable dog 227 is fixed at a predetermined position in the elongated hole 231 of the guide bracket 219 via a lock handle 229.

The limit switch 203 is connected to a fluid control device (not shown), and this fluid control device is housed in an operation box 233 installed on the swing base 13 as shown in FIG.

This fluid control device includes a hydraulic circuit 235 shown in FIG.
via the fluid cylinder 8 of the work clamping device 7
3 (pais cylinder) and the above swing cylinder 201
It controls the operation of the

Next, operation control of the fluid cylinder 83 and the swing cylinder 201 will be explained based on a hydraulic circuit diagram 235 shown in FIG. 24.

First, when the fluid cylinder 83 of the work clamp device 7 is extended, the first drive motor 239 of the hydraulic pump 237 is driven, and the hydraulic fluid sucked up from the tank 241 through the filter 243 is pumped.

It is supplied to the expansion side cylinder chamber 83a of each fluid cylinder 83 through the supply path 245.

When hydraulic oil is supplied to the expansion side cylinder chamber 83a, the piston rod and the abutment member 85 attached to the tip thereof expand, and as described above, the workpiece W is clamped between the guide plates 45 and 47. It is.

Also, at this time, the mesh side cylinder chamber 83b of the fluid cylinder 83
The hydraulic oil supplied therein is drained into the tank 241 through a discharge path 247.

Conversely, when the fluid cylinder 83 is contracted,
When the manual switching valve 249 is switched, the hydraulic oil in the supply path 245 is supplied into the net-side cylinder chamber 83b, the piston rod is contracted, and the clamp on the workpiece W is released.

Further, the expansion and contraction operation of the swing cylinder 201, that is, the control of the amount of workpiece cutting by the cutting device 16 is controlled by the hydraulic pump 237.
The hydraulic oil sent out at the set pressure (approximately 70 kg/cI7t) of pressure reducing valve 251. Solenoid switching valve 253-5
Swing cylinder 20 from supply path 255 via OL1
When the oil is supplied to the expansion side pressure oil chamber 213 of No. 1, the piston 211
The piston rod 205 expands while compressing the spring 217, and at the same time, the housing 1
5 is a workpiece support table 5 with a pivot shaft 158 as a fulcrum.
To the side (lean while rotating).

Simultaneously with the extension of the piston rod 205, the hydraulic oil in the line side pressure oil chamber 215 passes through the manual switching valve 263 of the discharge passage 261 branched from the discharge passage 257 to the tank 2.
41 (This is drained.

Also 259a. 259b is a check valve provided in the middle of the discharge path 257.

The extension stroke of the piston rod 205 is set in advance according to the depth of cut of the workpiece W.
The adjustment of this depth of cut, that is, the inclination angle of the uging 15 is:
This is done by arbitrarily adjusting the movement of the movable dog 227 that comes into contact with the actuator 223 of the limit switch 203.

In this manner, when preparation for machining the workpiece W is completed, the manual switching valve 263 is switched, and the switching valves 267 provided in the flow rate adjustment passage 265 branching from the discharge passage 261 are switched and controlled.

If you start cutting the workpiece W from this state,
The housing 15 is tilted by a predetermined stroke of the swing cylinder 201, that is, by a set pressure.
A large reaction force acts on the cutting tool 157.

The reaction force that the cutting tool 157 receives changes as the cutting length (cutting length) of the part where the cutting tool 157 is actually in contact with the work W and is 9 NIJ (cutting length) changes (changes as it gets twisted, and the swing cylinder 20
1 line side pressure oil chamber 215, oil drain passage 257, flow rate adjustment passage 2
If the pressure of 65 changes, it becomes difficult to control the flow rate at a constant level, so a pressure reducing valve 269 and a flow rate adjusting valve 271 are connected in series to function as a flow rate adjusting valve with pressure compensation (constant differential pressure type). It is.

Further, the swing cylinder 201 can be contracted by switching the solenoid switching valve 253 to 5OL2.

Next, as shown in FIGS. 1 and 4, the pivot base 13 that pivots along the base 3 is provided substantially on the same axis below the center of rotation of the housing 15, that is, the pivot shaft 158. It is mounted so as to be able to pivot around a pivot shaft (not shown).

As shown in the figure, the swing drive device for the swing base 13 includes a chain 275 attached to the arcuate side wall 273 of the base 3.
is stretched, and this chain 275Q is attached to the swing base 13.
The sprocket 27 at the tip of the pivot shaft 277 provided on the side wall of the
9 is engaged.

Therefore, when rotating the rotating base 13 and the cutting device 16 erected on its upper surface, the sprocket 277 can be rotated by rotating the handle 281 provided at the upper end of the rotating shaft 277.
9 rotates along the chain 275, and the rotating base 13
can be rotated along the base 3.

Further, when the swing base 13 is to be stopped at a predetermined position on the base 3, it is fixed by rotating the lock handle 283 provided on the side of the swing shaft 277.

Various methods can be considered as this fixing means. For example, a method of clamping the upper and lower surfaces of the base 3 by rotating the lock handle 283, or a method of rotating the lock handle 283 (this method) Therefore, there is a method in which a pin or the like protrudes into a hole (not shown) provided on the base 3 and engages with it, and any fixing means can be used.

Furthermore, the swing drive device for the swing base 13 is not limited to the above-mentioned embodiments. Any means of pivoting the tube may be used.

Further, in the above embodiment, the cutting device 16 is connected to the pivot shaft 158.
Although it is provided so as to be swingable around the workpiece support table 5, it is not limited to this embodiment, and may be provided to be able to freely move forward and backward (slidably) relative to the workpiece W on the workpiece support table 5.

Next (this), the workpiece W (
In this embodiment, an example of the processing order of H-beam steel will be explained based on FIG. 25.

First, a workpiece W (H-shaped steel) of a predetermined size is placed on the workpiece support table 5 by a conveyor (not shown).
Deliver the product in the condition shown in Figure 1.

With this workpiece W being carried in, it is determined whether the parting groove machining (■) or the outer/inner bevel machining (■, ■) is performed on the workpiece W.
In this example, in order to simplify the explanation of the machining order, the parting groove machining (■) is performed first, the outer groove machining (■) is performed second, and the inner groove machining (■) is performed third. Let me explain the case.

(1) Machining sequence of parting groove machining C When performing parting groove machining, first, the workpiece conveying direction
Position the machining end.

This positioning operation is performed using the workpiece stopper device 111 as described above, and the machining tip W1 of the workpiece W is pressed against the stopper plate 147 or the stopper screw 149 depending on the set parting groove depth H of the workpiece W. guess.

This butting operation is performed by moving the transfer rollers 19a and 19b provided at both ends of the workpiece support table 5 to one manual handle 37.
By rotating the workpiece support table 5 at
This is done while moving the upper workpiece W forward or backward.

Next, when the workpiece W is to be clamped by the workpiece clamping device T in the above-mentioned state, the workpiece should be clamped on the workpiece support table 5 (according to the size Q of the workpiece W placed thereon) as described above. The height positions of the body 59 and the upper clamp base 79 are adjusted.

Then, the manual switching valve 249 (manual valve) of the fluid cylinder 83 of the workpiece clamp device 7 is operated to extend the fluid cylinder 83 (see FIG. 24), and the abutment member 85 provided at the tip of the rond is operated to extend the fluid cylinder 83. are brought into contact with the sides of the workpiece W, and the upper and lower parts of the workpiece W are firmly clamped against the guide plates 45° and 47G.

After the clamping operation of the workpiece W is completed in this manner, the workpiece stopper device 111, which was positioning the workpiece W in the X direction, is released.

This release operation rotates the rotary handle 151 in the original direction again to position the stopper plate 147 and the stopper screw 149 below the workpiece support table 5.

Next, after the work W is clamped, the work support table 5 on which the work W is fixed is set in order to set the machining position of the work W with respect to the cutting tool 157 of the cutting device 16, that is, the positioning of the parting groove machining C. , the workpiece is moved in the Y direction perpendicular to the transport direction X.

The amount of movement of the workpiece support table 5 in the Y direction is determined in advance by the stopper groove 1 of the first positioning piece 127 for cutting off.
33 is engaged with the hook portion 137 of the stopper plate 1135a and fixed, and in this state, the manual handle 107
The workpiece support table 5 is moved and stopped when the stopper member 119 comes into contact with the first positioning piece 127.

This completes the positioning work of the workpiece W in the Y-axis direction.

Next, we will start the parting groove machining work (■) on the workpiece W, but before that, we must adjust the height and check the span of the movable bracket 167 of the cutting tool 157, check the tension of the cutting tool 157 (saw blade), and check the tension of the cutting tool 157 (saw blade). Confirm that the limit switch 203 at the forward end of the rotor is set, and also confirm that the swing base 13 is locked.

From this state, operate the operation box 233 to
First, the 1 drive motor 1 that rotationally drives the cutting tool 157
63, and then the hydraulic circuit diagram 235 in FIG. 24 (
As described above, the swing cylinder 201 is extended by switching the solenoid switching valve 253.

Simultaneously with the extension of the swing cylinder 201, the housing 15 equipped with the cutting tool 157 is tilted once toward the machining surface of the workpiece W around the pivot shaft 158. This is to cut off a groove (2) at a predetermined position on a workpiece W.

As the cut-off groove machining (2) progresses in this manner and reaches a predetermined depth, the actuator 22 of the limit switch 203
3, the movable dog 227 that moves together with the piston rod 205 comes into contact with the piston rod 205, and the supply of the hydraulic oil that was being supplied to the extension side pressure oil chamber 213 of the swing cylinder 201 is stopped, and the extension operation of the swing cylinder 201 is stopped.

In this state, parting groove machining ■ is completed.

In order to temporarily bring the tilted housing 15 and cutting tool 157 into an upright state, the swing cylinder 201 is retracted.

This operation is as explained in FIG. 24.

(2) Machining sequence of outside bevel machining (■) As described above, when the cut-off groove machining (■) of the workpiece W is completed, the workpiece clamp in the workpiece clamping device 7 is released.

This operation is performed by switching and controlling the manual switching valve 249 of the fluid cylinder 83 (see FIG. 24), in the opposite manner to the above case, and supplying hydraulic oil to the line side cylinder chamber 83b to contract the contact member 85. let

After the workpiece W has become free in this way, in order to adjust the machining end of the workpiece W with respect to the cutting tool 157, the workpiece W on the workpiece support table 5 is moved by the same operation as described above, and the workpiece positioning device 9 work stopper device 111 and base plate positioning device 109
By doing this, position Q so that external bevel processing can be performed.

Then, the workpiece W is clamped again by the workpiece clamping device 7.

On the other hand, the cutting device 16 operates the lock handle 283 installed on the swivel base 13 to rotate the swivel base 13 along the base 3 in order to set the groove angle α for external beveling. Keep it moist.

From this state, the handle 281 is rotated to correspond to the groove angle α, and the swing base 13 and the cutting device 16 installed on the upper surface thereof are turned and locked at a predetermined position.

Then, as in the case of parting groove machining (2) described above, the swing cylinder 201 is operated from the operation box 233G to extend and operate, and the cutting tool 157 rotating on the side surface of the housing 15 is used to open the swing cylinder 201 outwardly. Preliminary processing (■) is performed.

Note that the other operations are the same as in the case of cut-off groove machining (2), so detailed explanations will be omitted.

(3) Machining order of inner beveling ■ The machining order of this inner beveling ■ is exactly the same as the above outer bevel machining ■. After finishing the outer bevel machining ■,
The work stopper device 111 and the base plate positioning device 109 perform the positioning in the X and Y directions for internal beveling C by unclamping the The turning base 13 is turned so that the cutting tool 157 of the cutting device 16 corresponds to the inner groove angle β.

Then, in the same manner as described above, the swing cylinder 201 is extended to tilt the housing 15 and the cutting tool 157, thereby performing an inner beveling process at a predetermined angle β.

Further, the parting groove machining section OA is cut by melting at a welding factory or the like after all machining is completed.

The above description of the machining order describes parting groove machining (■), external bevel machining (■), and inward bevel machining (■) of an example piece of the workpiece W. As shown in FIG. When performing parting groove machining ■ and external bevel machining C on the side piece, and performing parting groove machining and internal beveling machining G on the other side piece (in this case, the end of external bevel machining C After that, it is necessary to reverse the workpiece W.

The processing is then carried out in the same manner as in the processing order described above.

In addition, as a method for processing both sides of the workpiece W without reversing the workpiece W, for example, the workpiece support table 5 is lengthened to lengthen the movement stroke of the workpiece W in the Y direction, and the workpiece clamping device 7 and the workpiece It is also conceivable to perform this by providing two positioning devices 9 respectively.

Furthermore, as another machining method described above, if the turning center of the cutting device 16 is designed to be able to move parallel to the side surface of the workpiece support table 5, both sides of the workpiece W can be machined without reversing the workpiece W. It is also possible to process it in a dark manner.

In addition, although the above-mentioned example explained only the processing operation of a section steel, it goes without saying that cutting processing of other steel plates, etc. is also possible.

As can be understood from the above description of the embodiments, according to the present invention, the positioning device for the workpiece W is simple and the workpiece clamping can be performed automatically. The workpiece W can be clamped more safely and reliably without requiring time and effort.

Furthermore, since the structure is relatively simple, maintenance can be easily performed.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view of the section steel processing device, Fig. 2 is a front view of the section steel processing device 1, Fig. 3 is a side view of Fig. 2, Fig. 4 is a plan view of Fig. 2, and Fig. 5 is a side view of the section steel processing device 1. The figure is a plan view of the workpiece transfer table.
Figure 6 is a left side view of Figure 5, Figure 7 is a front view of Figure 5,
Fig. 8 is a partially vertical front view of the work clamp device, Fig. 9 is a side view of Fig. 8, Fig. 10 is a plan view of Fig. 8, and Fig. 11 is a side view of Fig. 8.
The figure is a side view taken along the line Xl-X1 in Figure 10, Figure 12 is a front view of the base plate positioning device, and Figure 13 is a side view of the base plate positioning device.
Fig. 14 is a longitudinal sectional side view taken along the line ■-■ in Fig. 12, Fig. 15 is a vertical sectional side view taken along the line - Fig. 12, Fig. 15 is a straight bucket view of the work stopper device, Fig. side view, No. 17
Figure 18 is a plan view of the stopper plate and stopper screw in Figure 15, Figure 19 is a side view of the cutting device, Figure 20 is a plan view of the stopper plate and stopper screw in Figure 15;
The figure is a rear view of Fig. 19, Fig. 21 is a plan view of Fig. 19,
Fig. 22 is a side view of the vibration prevention device installed in the cutting device, Fig. 23 is a longitudinal sectional front view of the workpiece depth adjustment device (swing cylinder), Fig. 24 is an explanatory diagram of the hydraulic circuit, Fig. 25
The figure is an explanatory diagram of processing the workpiece W. Main symbols in the drawing, 3... base, 5...
...Work support table, W...Work, 7.
... Work clamp member, 13 ... Swivel base, 157 ... - Cutting tool, 15 ...
・Housing, 16...--Cutting device, X...
. . . Workpiece conveyance direction, 9 . . . Work positioning device, 199 . . . Workpiece depth adjustment device.

Claims (1)

[Claims] 1. A workpiece support table 5 is provided on the base 3. A work clamp device 7 for fixing the work W is provided in a part of the work support table 5, and a swing base 13 that can freely rotate is mounted on the base 3 on one side of the work support table 5 in the work transport direction. A cutting device 16 is provided on the swing base 13, and includes a housing 15 that can approach and move away from the machining surface of the workpiece W clamped by the workpiece clamping device 7, and that supports a cutting tool '157. , on the side wall side of the workpiece support table 5 in the workpiece conveyance direction X in the longitudinal direction of the workpiece W. and a workpiece positioning device 9 for positioning in a direction orthogonal to the longitudinal direction. 2. The work positioning device 9 comprises a work stopper device 111 that positions the work W in the work transport direction, and a base plate positioning device 109 that positions the work W in a direction perpendicular to the work transport direction. Section steel processing equipment according to item 1. 3. A work support table 5 is provided on the base 3, a work clamp device 7 for fixing the work W is provided on a part of the work support table 5, and on one side of the work support table 5 in the work transport direction, A swing base 13 is provided on the base 3, and a work W clamped by the work clamp device I is placed on the swing base 13.
The cutting tool 15 can approach and move away from the machined surface of the cutting tool 15.
A cutting device 16 is provided between the housing 15 of the cutting device 16 and the rotating base 13, and a cutting tool 1 for the machining surface of the workpiece W is provided.
A shaped steel processing apparatus characterized in that a workpiece cutting depth adjustment device 199 for controlling the cutting depth of 57 is provided. 4. The workpiece cutting depth adjustment device 199 includes a swing cylinder 201 that tilts the housing 15, a limit switch 203 that detects that the cutting tool 157 has cut into the workpiece W to a predetermined depth, and a limit switch 203 that controls the operation of the swing cylinder 201. 4. The shaped steel processing apparatus according to claim 3, further comprising a fluid control device for controlling.