JPS5830103B2 - Work clamp device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a work clamping device, and more specifically, it is used in a device for machining a section steel such as an H section steel, and is used to clamp one flange of the section steel vertically and reliably. This invention relates to a workpiece clamping device that can clamp a workpiece.

Hitherto, gas cutting has generally been used to process the bevels of H-beams used in steel frame construction, but recently milling using a profile milling cutter has also been used.

On the other hand, in clamping a workpiece in such a shaped steel processing apparatus, an operator moves and adjusts the workpiece on a support table to a predetermined position corresponding to a cutting device, and then fixes the workpiece in a vise.

For this reason, it takes a lot of time and effort to clamp the workpiece, and if the flange of the workpiece is slightly inclined due to errors in the manufacturing process, it is fixed in that state, and the flange There was a problem in that it was difficult to correct the part to a vertical position.

This invention was devised in view of the above-mentioned conventional problems and to effectively solve the problems. To provide a workpiece clamping device that clamps the workpiece in parallel while holding one flange portion vertically, improves the efficiency of the clamping operation, and thereby significantly improves the machining operation of the workpiece.

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.
, a work clamp device 7 provided on one side of the work support table 5 in the longitudinal direction, and a work support table 5
a workpiece positioning device 9 provided on the front side wall perpendicular to the workpiece transport direction On the side,
A turning base 13 is rotatably placed on the base 3, and a cutting tool support member is provided on the turning base 13, which can freely approach and move away from the work W clamped by the work clamp device 7. - A cutting device 16 consisting of a housing 15, and the present invention is particularly focused on the work clamping device 7 described above.

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 210 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, the transfer roller 19a,
The upper surface of 19b is configured to be flush with the upper surface, and this allows the work W to be transferred to be transferred smoothly in the work transfer direction X.

Transfer roller 19 a supported by the bracket 25
, 19b, a sprocket 29 is attached to each rotation support shaft 27, and a drive sprocket 33 attached to the tip of a drive shaft 31, which will be described later, is attached to each sprocket 29.
The chain 35 passed to the hook is turned around.

A drive shaft 31 with a drive sprocket 33 attached thereto is attached to the lower side wall of the guide roller 21.
A manual handle 37 is provided at the base end.

Therefore, when the manual handle 37 is rotated by an operator or the like, the drive sprocket 33 of the drive shaft 31 and the sprocket 29 of the rotary support shaft 27 are each hooked on to the transfer roller via the chain 35 that is rotated. 19a.

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

Next, as shown in FIGS. 8 to 11, the work clamp device 7 provided on one side of the work support table 5 in the longitudinal direction is attached to the lower part of one side of the support plate 17 in a predetermined direction integrally therewith. Long base plates 39 are slidably arranged side by side.

On this base plate 39, as shown in FIG. 9, a guide part 41 and a work clamp member 43 which can be raised and lowered with respect to this guide part 41 are provided at a predetermined interval.

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 + 49b are arranged in parallel at right angles to each other's backs, and this holding plate 49a4
9b, and a back plate 51 installed between the
Each plate 45, 47 which constitutes these guide parts 41,
49a, 49b, 51 are fixed on the base plate 39 via ribs 53.55.

Further, in the elongated space 57 formed by the two guide plates 45° 47, the holding plates 49a and 49b, and the back plate 51, the base end 61 of the clamp support 590 is attached to the guide plate 45. 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 provided between the bottom surface of the proximal end 61 of the clamp support 590 located in the space 57 and the support member 71 attached to the lower part of the inner wall of the guide plate 45° 470.
A coil-shaped plate spring 73 is fitted to cover the lower end of the coil 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 590 is provided with an upper clamp base 79 whose center portion is rotatably supported via a shaft 77, and the guide plate 45 is attached to both ends of the upper clamp base γ9. Work holding members 81 and 81 for clamping the work W between the workpiece and the workpiece W are attached.

A fluid cylinder 83 is installed inside one of the workpiece holding members 81, and an abutment member 85 that comes into contact with the workpiece W is attached to the tip of the fluid cylinder 830.

Next, below the upper clamp base 79 attached to the head 75 of the flang support 59, that is, on the base plate 39, a lower clamp base 87 similar to the upper clamp base 79 is rotated via a shaft 89. It is mounted so that it can move freely.

The lower clamp base 87 has the same structure as the upper clamp base 79, so the explanation will be omitted and the following explanation will be explained using the same reference numerals. Upper clamp base 7
Therefore, the upper and lower clamp bases 79 and 87 operate at the same time, and the vertical positions for clamping the workpiece W are also exactly the same.

With the above configuration, the guide play of the guide portion 41) 45,
After positioning one flange portion of the workpiece W between the upper and lower clamp bases 79 and 87, pressure fluid is supplied to the fluid pressure cylinder 83 and the rod presses the inner surface of the flange portion of the workpiece W. The clamp base 79.87 swings horizontally due to the reaction force, and the contact member 85 at the other end comes into contact with the flange portion and presses it toward the guide portion 41 side.

Therefore, the workpiece W is fixed parallel to the conveying direction as shown in FIG. 1, and with one flange section perpendicular as shown in FIG.

Therefore, when performing bevel processing as described later, accurate processing is performed.

Next, a guide member 93 having a screw hole 91 is attached to one end of the base plate 39 that supports the lower clamp base 87, and the tip of a threaded rod 95 is screwed into the screw hole 91.

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

As shown in FIGS. 9 and 10, this bevel gear 101 meshes with a bevel gear 105 attached to the tip of the handle shaft 103, and a manual handle 107 is attached to the base end of the handle shaft 1030. There is.

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 yy perpendicular to the direction yy, and the workpiece stopper device 111 positions the workpiece W in the workpiece transport 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 supporting chiffle 5.

A nozzle 117 for rotating the positioning rod 115 is integrally provided at one end of the positioning rod 115, and a notch 117 is provided on one side of the nozzle 117 and approximately in the middle thereof. Stopper member 119 with a notch
, 121 are provided.

Note that this notch facilitates opening from first, second, and third positioning pieces 127, 129, and 131, which will be described later.

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 over almost its entire length.

Both ends of the position setting rod 123 are attached to the side walls of the support plate 97 that supports the workpiece support table 5 via support brackets 125.
A first positioning piece 127 for the protruding tube is attached to the threaded portion of
A second positioning piece 129 for the inner groove, and a third positioning piece 131 for the outer groove are slidably screwed into each other.

Each 1st, 2nd, 3rd positioning piece 127° 129.13
1 is formed into a disk shape, and has a plurality of stopper grooves 133 (in this embodiment, six at 60 degree intervals) bored on its outer circumferential surface, and a plurality of stopper grooves 133 (six at 60 degree intervals in this embodiment) on the circumferential surface between the stopper grooves 133. is 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 plates 135a, 135b.

135c is attached to one end.

This stopper plate 135 a t 135 b +
135c, as shown in FIGS. 13 and 14, 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 and 135c are made of an elastic material (for example, a spring plate).

With the above configuration, in order to position the support plate 17 in the Y direction, that is, in the direction perpendicular to the transport direction X of the workpiece W, the first, second, and third
Either of the positioning pieces 127, 129° 131 is moved along the position setting rod 123, and at a predetermined position, the hook portions 131 of the stopper plates 135a, 135b, 135c are engaged with the stopper grooves 133 and fixed.

By rotating the manual handle 1070 provided at the lower part of the work clamp device 7, the support plate 17 slides, and one of the stopper members 119, 121 of the positioning rod 115, which moves together with the support plate 17, Fixed first, second, and third positioning pieces 127
, 129, 131, 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, and an arm member 14 erected on the circumferential surface of the rotary support shaft 143.
5, a stopper plate 147 attached to the tip of the arm member 145, and a stopper screw 149.

The stopper plate 147 and the stopper screw 149 are rotated 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 1 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, the work support device 11 that supports the bottom of the work W protruding from the unloading end of the work support chifur 5 is attached to the guide plate 4 of the work clamp device 7 as shown in FIG.
A workpiece support member 11a is attached to the base plate 3 at the bottom of the base plate 5.
The workpiece support member 11a is provided so as to protrude along the side edge of the workpiece support table 9, and the upper surface of the workpiece support member 11a is flush with the upper surface of the workpiece support table 5.

The function of this workpiece support device 110 is mainly to prevent wobbling, vibration, displacement, etc. during workpiece processing, and to enable processing in a stable state.

Note that although this workpiece support device 11 supports the bottom of the workpiece W, it may also support the top surface or side surface of the workpiece W.

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

First, after the work W is transported or placed on the work support table 50 at a predetermined position, the work W is positioned in the transport direction X.

Positioning of the workpiece W in the conveying direction 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.

This positioning work varies depending on the cutting depth of the work W as described above, and either the stopper plate 147 or the stopper screw 149 is used.

In this operation, the operator holds the rotary handle 151 and rotates it around the rotary support shaft 143, and fixes either the stopper plate 147 or the stopper screw 149 to the workpiece W on the workpiece supporting chifur 5. have them face to face.

Then, the processing end of the workpiece W is fixed to the stopper plate 147.
Alternatively, it is positioned by abutting against the stopper screw 149.

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

This height position adjustment is performed 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 590 to expand and contract the leaf spring 73 in the space 51. It moves up and down along the threaded rod 65 while moving.

When the height position adjustment work of the clamp support body 59 with respect to the workpiece W is completed in this way, next, the fluid cylinder 83 provided at one end side of the upper and lower clamp bases 79°87 is
is extended by operating the operation box 233, which will be described later, and the contact member 85 provided at the tip of the rod is moved against the workpiece W.
The workpiece W is firmly clamped between the guide plates 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. Set 127°, 129.131 to appropriate positions.

From this state, when the manual handle 107 shown in FIG. 9 is rotated in either direction, the bevel gear 105 provided at the tip of the handle shaft 103 rotates. Threaded rod 95 rotates via bevel gear 101 that meshes with it.

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.
At the top, there is a cutting tool support with one end swingably supported.
・It is composed of a clamp 15.

As shown in FIGS. 1, 2, 3, 19, and 20, the base end of the clamp 15 is attached to a pivot provided on the workpiece support table 5 side on the pivot base 13. axis 1
58, and is provided so as to be rotatably erected.

A driven wheel 159 and a driving wheel 161 are provided at the upper and lower parts of the clamp 15 facing the workpiece support table 5 side.
are arranged in parallel at a predetermined interval, and both wheels 15
9, 161, a band-shaped cutting tool 157 (a band saw is used in this embodiment) is hung in an endless manner.

The drive wheel 161 is connected to a drive motor 163 (see FIGS. 1 and 2) provided on the back of the clamp 15, and the drive motor 163 drives 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 this guide member 165 includes:
Supports the back surface of the cutting tool 157 and guide member 165
A movable bracket 167 and a fixed bracket 169 that can be raised and lowered are provided along both side edges of the bracket.

An elevating screw rod 171, which is vertically disposed approximately at the center of the guide member 165 in the width direction, is screwed into approximately the center of the movable bracket 167 and the fixed bracket 169 in the longitudinal direction, and the upper end of the elevating screw rod 171 Handle 1 provided on
By rotating the movable bracket 13, the movable bracket 16
7 is something that goes up and down.

Movable bracket 1 supporting the back of the cutting tool 157
As shown in FIG. 21, a U-shaped groove 175 is formed at the tip of the fixing bracket 67 and the fixing bracket 169.
Inside are guide chips 177a and 17γb that support the cutting tool 1570 while sandwiching both sides thereof, and the cutting tool 157.
A guide roller 179 is provided to guide the back surface of the camera.

Guide chips 177a, 177b and guide roller 1
As for the material of 79, since high heat is generated due to friction with the cutting tool 157, it is preferable to use a super steel alloy or the like.

Next, a cutting tool 1 is placed at the bottom of the movable bracket 167.
5γ is suppressed 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, runout, etc. of the cutting tool 157.

As shown in FIG. 22, this vibration prevention device 181 includes a vibration prevention member 183 that supports the back surface of the cutting tool 157;
A swing arm 185 rotatably supports the center of the side part of the vibration prevention member 183 and has one end swingably attached to the movable bracket 167, and a buffer elastically supports the back of the swing arm 185. It is composed of a member 187.

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 elastic force of the spring 1950 absorbs vibrations of the cutting tool 157.

Note that the elastic force of the spring 195 is the same as that of the support rod 191.
It can be set arbitrarily by moving a nut 193 provided at the tip.

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

Next, a workpiece depth adjustment device 199 that controls the depth of cut of the cutting tool 157 into the machined surface of the workpiece W, which is provided between the clamp 15 of the cutting device 16 and the turning base 13, 23 As shown in Fig. 23, swing cylinder 2
01, 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 2070 is rotatably connected to a support frame 209 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 attached 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.

An actuator 223 of a limit switch 203 attached to the top of the cylinder 207 is attached to the tip of the piston rod 205 via an L-shaped guide bracket 219.
a plurality of fixed dogs 225 in contact with the movable dog 22;
7 is 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 connects the fluid cylinder 83 of the work clamp device 7 via a hydraulic circuit 235 shown in FIG.
(vice cylinder) and the swing cylinder 201 described above.

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 drive motor 239 of the hydraulic pump 237 is driven, and the hydraulic oil sucked up from the tank 241 through the filter 243 passes through the supply path 245 to the respective fluids. It is supplied to the expansion side cylinder chamber 83a of the cylinder 83.

When hydraulic oil is supplied to the expansion side cylinder chamber 83a, the piston ROLAD and the abutting member 85 attached to its tip are expanded, and the workpiece W is clamped between the guide plates 45 and 47 as described above. be.

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/crA) is applied to the pressure reducing valve 251 and the solenoid switching valve
The swing cylinder 201 is connected to the supply path 255 via L1.
When the piston rod 205 is supplied to the expansion side pressure oil chamber 213 of
rotates and tilts toward the workpiece support table 5 using the pivot shaft 158 as a fulcrum.

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 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.
Adjustment of this depth of cut, that is, the angle of inclination of the clamp 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,
A large reaction force acts on the housing 15 and the cutting tool 157, which are tilted and supported by a predetermined stroke of the swing cylinder 201, that is, a set pressure.

In order to maintain the set pressure applied to the swing cylinder 201 against such a reaction force, the cutting tool 157
may be damaged or deformed, making cutting difficult.

In order to prevent such problems, a pressure reducing valve 269 and a flow regulating valve 211 are provided in the flow regulating passage 265 to control the pressure against the reaction force.

In other words, the pressure reducing valve 269 and the flow rate regulating valve 271 provided in the flow regulating passage 265 are intended to always maintain a constant set pressure of the swing cylinder 201 against the reaction force acting on the cutting tool 157. This is an attempt to obtain good cutting by always keeping the cutting pressure of 157 constant.

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 rotating base 13 that rotates along the top of the base 3 moves
It is rotatably mounted around a rotation center, that is, a pivot shaft (not shown) provided substantially on the same axis below the pivot shaft 158 .

As shown in the figure, the swing drive device for the swing base 13 includes a chain 275 attached to the arcuate side wall 2γ3 of the base 30.
is stretched, and this chain 275 is attached to a sprocket 279 at the tip of a rotating shaft 277 provided on the side wall of the rotating base 13.
are meshing.

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 pivot base 13 is to be stopped at a predetermined position of the base 30, it is fixed by rotating a lock handle 283 provided on the side of the pivot shaft 271.

Various methods can be used as this fixing means, such as a method in which the upper and lower surfaces of the base 3 are clamped by rotating the lock handle 283, or a method in which the upper and lower surfaces of the base 3 are held by rotating the lock handle 283. 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.

Further, the swing drive device for the swing base 13 is not limited to the above embodiments, and for example, the swing base 13 may be turned by meshing gears, or automatically turned by a motor or the like by combining a pulley and a belt. ) Any method can 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 able to swing freely around the workpiece support table 5, it is not limited to this embodiment, and may be provided so as to be able to move forward and backward (slidably) relative to the workpiece W on the workpiece support table 5.

Next, an example of the processing order of a workpiece W (H-section steel in this embodiment) using the section steel processing apparatus 1 of the present invention will be explained based on FIG. 25.

First, a workpiece W (H-shaped steel) of a predetermined size is carried onto the workpiece support table 5 in the state shown in FIG. 1 by a conveyor (not shown).

With this workpiece W brought in, it is determined whether the workpiece W is to be cut off, grooved, or beveled outside or beveled ■ or ■.
In this example, to facilitate explanation of the processing order,
The first step is cut-off groove processing■, and the second is external light processing■
Next, the case where the inner beveling process (3) is performed thirdly will be explained.

(1) Machining sequence of parting groove machining ■ 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 abutting operation is performed while moving the workpiece W on the workpiece support table 5 forward or backward by rotating the transfer rollers 19 a and 19 b provided at both ends of the workpiece support table 50 using the manual handle 37 . Let's do it.

Next, when the workpiece W is to be clamped by the workpiece clamping device 7 from the above-mentioned state, the clamp support 59 is adjusted according to the size of the workpiece W placed on the workpiece support table 5 as described above. And the height position of the upper clamp base 79 is 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 side surfaces of the workpiece W, and the upper and lower parts of the workpiece W are firmly clamped against the guide plates 45 and 47.

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.

In this release operation, the rotation handle 151 is rotated in the original direction again, and the stopper plate 147 and the stopper screw 149 are positioned below the workpiece supporting chiffle 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 parting groove machining (■). , 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 N35a and fixed, and in this state, the workpiece support table 5 is moved by the manual handle 107, and when the stopper member 119 comes into contact with the first positioning piece 127. to stop it.

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 2030 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 drive motor 16 rotates the cutting tool 157.
3, and then, as explained in the hydraulic circuit diagram 235 of FIG. 24, the solenoid switching valve 253 is operated to extend the swing cylinder 201.

Simultaneously with this extension operation of the swing cylinder 201, the housing 15 equipped with the cutting tool 157 is tilted toward the machining surface of the workpiece W around the rotation axis 158, and the rotating cutting tool 157 is used to move the workpiece W into a predetermined position. This is for machining positional cut-off grooves.

As the parting groove machining progresses in this way, when the predetermined depth is reached, the actuator 223 of the limit switch 203
, the movable dog 227 moving together with the piston rod 205 comes into contact with the piston rod 205, and the supply of hydraulic oil to the expansion side pressure oil chamber 213 of the swing cylinder 201 is stopped.
The extension operation of the swing cylinder 201 is stopped.

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

This operation is as explained in FIG. 24.

2) Machining order of outer optical machining (2) As described above, when the parting groove machining of the workpiece W is completed, the workpiece clamp in the workpiece clamping device 7 is released.

In this operation, contrary to the above case, the manual switching valve 249 of the fluid cylinder 83 is switched and controlled (see FIG. 24), and hydraulic oil is supplied to the mesh side cylinder chamber 83b to contract the contact member 85. .

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 is performed. Work stopper device 111 of device 9 and pace plate positioning device 10
9 to position it so that the outer beveling process (3) can be performed.

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

On the other hand, the cutting device 16 uses a lock and
- Operate the handle 283 so that the swing base 13 can swing along the base 3.

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 by the operation box 233 to extend and operate, and the cutting tool 157 rotating on the side surface of the housing 15 is used to cut the external bevel. 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 X-direction and Y-direction positioning for internal bevel machining by unclamping the The cutting tool 157 of the device 16 is turned around the turning base 13 so as to correspond 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 portion A of the cut-off groove machining (3) 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 internal bevel machining (■) on one side of the workpiece W. As shown in FIG. For one side piece, perform parting groove machining ■ and external bevel machining ■, and when performing parting groove machining ■ and internal beveling machining ■ on the other side piece, after completing external light machining ■ , 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 of 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 processing method as described above, if the turning center of the cutting device 16 is designed to be movable parallel to the side surface of the workpiece support table 5, 1. It is also possible to process both sides of the workpiece W without inverting the workpiece W.

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, the gist of the present invention is as described in the claims. Sometimes the flange is corrected to be parallel to the conveying direction, and in particular, even if one flange of the workpiece is inclined with respect to the vertical, the flange is fixed in a vertical state.

Therefore, the positioning of the flange portion becomes accurate, and when performing bevel processing, etc., accurate processing can be performed.

It should be noted that the present invention can be implemented in other forms than the embodiments described above by making appropriate design changes.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view of the section steel processing equipment, Fig. 2 is a front view of the section steel processing equipment, Fig. 3 is a side view of Fig. 2, and Fig. 4 is the
Fig. 5 is a plan view of the workpiece conveyance chifur, Fig. 6 is a left side view of Fig. 5, Fig. 7 is a front view of Fig. 5, and Fig. 8 is a partial longitudinal section of the work clamp device. 9 is a side view of FIG. 8, FIG. 10 is a plan view of FIG. 8, FIG. 11 is a side view of FIG. Front view, Figure 13 is X in Figure 12
A longitudinal side view along the ■-X■ line, Figure 14 is the ■ of Figure 12.
15 is a front view of the work stopper device, 16 is a side view of 15, 17 is
Fig. 18 is a plan view of the stopper plate and stopper screw shown in Fig. 15, Fig. 19 is a side view of the cutting device, Fig. 20 is a rear view of Fig. 19, Fig. 21 is a plan view of Fig. 19, Chapter)
Figure 22 is a side view of the vibration prevention device installed in the cutting device;
Figure 23 shows workpiece depth adjustment device (swing cylinder)
FIG. 24 is an explanatory diagram of the hydraulic circuit, and FIG. 25 is an explanatory diagram of machining the workpiece. (Main symbols in the drawing), 3... Base, W...
...Workpiece conveyance direction,
Y...Direction perpendicular to the workpiece conveyance direction, 5...
... Work support table, 41 ... Guide part, 43 ... Work clamp member, 81 ...
...Work holding member.

Claims (1)

[Claims] 1 A workpiece 3 lamp device for fixing a workpiece W such as a section steel, 2 a workpiece support table 5 that horizontally supports the workpiece W, and a ramp device that is movable in a horizontal direction perpendicular to the conveyance direction of the workpiece W. Base: A plate 39 is provided, a clamp support 59 is attached to a guide portion 41 erected on one side of the base plate 39 so as to be vertically adjustable, and an upper clamp base 79 is attached to the three lamp supports 59. A fluid pressure cylinder 83 is provided so as to be able to freely swing flatly, and is provided at one end of the clamp base 79σ to come into contact with the inner surface of one of the flange portions of the workpiece W and press the outer surface of the flange portion toward the i-guide portion 41. A workpiece holding member is provided at the other end of the clamp base T9 to press the flange portion of the workpiece W against the guide portion 41 when the clamp base 79 swings. work clamp device.