JP2724139B2 - Cutting equipment - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a cutting device such as a horizontal band saw, and
In detail, horizontal cutting and vertical cutting are continuous
And a cutting device useful for performing the cutting operation. [Technical Background of the Invention and Problems Thereof] In recent years, ingots manufactured in steelworks have become larger.
Quality inspection of the above ingots
To separate the test piece from a part of the ingot.
You. Also, in some cases, ingots are used to process products.
Blocks may be cut and separated. The ingot, for example, has a square cross-sectional shape,
If the length of one side is as large as 2m,
Super-large cutting device that can cut the ingot directly
Because of the absence of the test piece, cutting and separating the test piece etc. is extremely troublesome.
It was a simple thing. [Object of the Invention] The present invention has been made in view of the above problems,
Its purpose is to make it as large as the ingot.
Useful for cutting and separating test specimens from complex workpieces
It is intended to provide a simple cutting device. [Summary of the Invention] In view of the conventional problems as described above, the present invention
Band saw for cutting workpieces placed on the table
A cutting head that supports the blade is provided so that it can move up and down,
Drive wheels and driven wheels provided on the cutting head
Saw blade guide for guiding the band saw blade between the blade and the eel
In the cutting device provided with the device, the saw blade guide device is provided.
Near the center of rotation of the rotating body that is rotatably mounted on the
The band saw blade forms a groove through which the band saw can pass.
A guide block for holding and guiding the blade is provided.
In the width direction of the band saw blade guided by the lock
Provided in a state substantially coincident with the center of rotation of the rotating body and the center,
The state where the tip of the band saw blade is oriented in the horizontal direction and the vertical
In order to rotate to the state of pointing in the direction,
A rotary actuator for dynamic rotation is provided, and
A fixing device is provided for fixing the rotating body so that it cannot rotate.
It becomes. [Embodiment] Referring to FIG. 1, FIG. 2 and FIG.
The cutting device 1 is generally, for example, an ingot
A very large workpiece (workpiece) W such as
The work table 3 to be placed is provided on the base 5.
In addition, the work piece W is gripped and fixed on the base 5.
And a vice device 7 for setting. In addition,
A guide column device 9 is erected on the base 5.
The workpiece W is cut by the guide column device 9 of FIG.
Cutting head 13 supporting band saw blade 11 for
Moveable and front-back direction (in FIG. 1, the direction perpendicular to the paper surface)
(In the left and right directions in FIG. 2)
ing. In the above configuration, the work table
The workpiece W is placed on the workpiece W
After gripping and fixing W, the tip of the band saw blade 11 is moved vertically downward.
And hold it under the cutting head 13
By lowering the workpiece, the band saw blade 11
It can be seen that a vertical cut of W can be made
U. Also, the band saw blade 11 is horizontally twisted so that the teeth of the band saw blade 11
Point the front part forward or backward, and
Table 3 or cutting head 13 in the front-back direction
Move to perform cutting of the band saw blade 11 into the workpiece W.
By doing so, the horizontal cutting of the worktable W can be performed.
It will be appreciated that this can be done. The base 5 is made of, for example, H-shaped steel, channel steel, or the like in a square shape.
Are appropriately combined with each other.
Left and right sub-bases on the left and right sides of the upper surface
15R and 15L are further superposed integrally. Ie
The overall configuration of the base is between the left and right sub-bases 15R and 15L.
In this embodiment, a recess 17 is formed in the front-rear direction. On the work table 3 on which the workpiece W is placed
On the surface, the lower surface of the workpiece W and the upper surface of the work table 3
Multiple to maintain proper clearance between
A sleeper 19 is placed so that its position can be adjusted and a work table
The knob 3 is configured to be movable in the front-rear direction. That is, the recess 17 in the base and the base 5
A plurality of sleeper members 21 are respectively provided at the front and rear positions of
The sleeper members 21 are arranged so that
Idrail 23 is supported. And the worktable
The wheel 3 has a plurality of wheels 25 so that it can roll on the guide rail 23.
Is rotatably mounted. Also, the right and left orthogonal to the longitudinal direction of the guide rail 23
In order to restrict the movement of the worktable 3 in
Roller that clamps one of the guide rails 23 from left to right
Are provided rotatably. In addition, work table
3 is provided with a rack rod 27 extending in the front-rear direction.
The rack rod 27 is attached to the rack 5 before it is mounted on the base 5.
Pinion rotated by servo motor 29 for rearward movement
The gear 31 is engaged. With the above configuration, the servo motor 29 for movement is
Therefore, when the pinion gear 31 is rotated in an appropriate direction, the rack
The work table 3 can be moved in the front-back direction via the rod 27.
It will be understood that The details are not shown.
However, the moving position of the worktable 3 in the front-back direction is
Appropriate position detecting device, such as linear inductosin
Easy detection by using the appropriate linear scale
And also, for example, feedback control, etc.
Position of the worktable 3 in the front-rear direction
Can be performed accurately. The vice device for gripping and fixing a workpiece W
7 is the reference side mounted on the left and right sub-bases 15R and 15L
It consists of a vise 33 and a pressing vise 35,
The side vise 33 and the pressing side vise 35 are
Are provided facing each other. The vise device 7 is movable in the front-rear direction.
In addition, on each of the sub-bases 15R and 15L, there is a front-rear guide.
Members 37R, 37L are provided, and each guide member 37R, 37L
The support in the reference side vise 33 and the pressing side vise 35
Holding sliders 39R and 39L are movably supported in the front-rear direction.
Has been accepted. The left and right support sliders 39R and 39L are not shown.
However, for example, a rack and pinion mechanism, a screw mechanism or
It is moved back and forth by the operation of the fluid pressure cylinder.
The left and right support sliders 39R and 39L move back and forth in synchronization.
It is configured to: Workpiece W placed on the worktable 3
In order to grip and fix the support sliders 39R on the left and right,
The 39L has a pair of slide bars 4 that can reciprocate left and right.
1R and 41L are supported. Each slide bar 41R, 41L is paired
The reference vise jaw 43 and the push
A pressure vise jaw 45 is mounted opposite. Reciprocate the reference vice jaw 43 slightly left and right.
To support slider 39R in reference side vise 33
Is equipped with a mini cylinder 47.
Of the piston rod 49 is connected to the reference vice jaw 43.
Tied. Also, the pressing vice jaw 45 is reciprocated in the left-right direction.
For example, the support slider 39L in the pressing side vise 35 has no
A nut member 51 is attached.
A screw rod 53 extending in the direction is screwed. This screw rod 53
Is a cover bracket attached to the end of the slide bar 41L.
It is rotatably supported by a bracket 55 and has a screw rod 53.
Is connected to the hydraulic motor 57 mounted on the cover bracket 55.
Is tied. With the above configuration, the mini cylinder 47 is operated.
The reference vice jaw 43 slightly
By being moved and driving the hydraulic motor 57, the screw
Pressing vice jaw 45 via the slave rod 53 and the nut member 51
Is largely moved in the left-right direction. Therefore, the mini
To operate the cylinder 47 and the hydraulic motor 57 appropriately
Therefore, the workpiece W has the reference vice jaw 43 and the pressing vice.
Gripped by the jaw 45 or released
Is what you do. In the reference side vise 33 and the pressing side vise 35,
The back and forth movement of each support slider 39R, 39L is
Workpiece by Sujo 43 and pressing vice jaw 45
W in both gripped and released state
Is possible. To guide the cutting head 13 vertically
The guide column device 9 of FIGS. 1 to 3 and FIG.
As is clear from FIGS. 4 to 6, the right sub-base 15R
Column-shaped main guide post 59 standing upright and left side
Equipped with a sub guide post 61 erected on the sub base 15L
I have. Above main guide post 59 and sub guide
Left of each near rear position of post 61
The right columns 63R and 63L are erected. In order to make the guide column device 9 rigid,
The lower part of the post 59 and the lower part
The lower part of the id post 61 and the lower part of the left support 63L
As shown in Fig. 6, Fig. 6
They are integrally connected by members 65R and 65L.
The parts are left and right upper connecting members 67R, 67L (Fig. 1,
(See FIG. 3). In addition, left
The right upper connecting members 67R and 67L are as shown in FIG.
And an intermediate connecting member 69 extending in the left-right direction.
Connected to. As is clear from the above configuration, the guide column device 9
The main guide post 59 and the sub guide post.
Mode 61 is reinforced by columns 63R and 63L, respectively.
And reinforce each other. Therefore,
For main guide post 59 and sub guide post 61
To move the cutting head 13 in the front-rear direction.
The main guide post 59 and support
A large motor that bends the guide post 61 back and forth
The main guide post 59 and support
The guide guide 61 does not bend,
The vertical movement of the cutting head 13 can be maintained smoothly.
It is. Also, the upper part of the main guide post 59 and the sub guide post
The upper part of the door 61 is connected via the intermediate connecting member 69.
With this, it becomes an aspect that the deflection in the left-right direction is mutually regulated.
Therefore, it is possible to prevent bending in the left-right direction. That is, the guide column device 9 is a main guide post.
59 and sub-guide post 61 bending prevention
Stop, smooth and accurate vertical movement of the cutting head 13
Can be guided to. Referring to FIGS. 1 and 2, before the band saw blade 11 is supported.
The cutting head 13 is attached to the main guide post 59.
And vertically movable by being guided by the sub guide post 61
Move to the back and forth housing 71 and the up and down housing 71
It consists of a freely supported saw blade housing 73.
You. More specifically, as is apparent from FIGS.
The lifting housing 71 has legs 75, 77 on both left and right sides.
And the upper parts of both feet 75 are integrated with beam members 79
Is connected. The right leg 75 is
The main guide post 59 is vertically movably fitted. The left leg 77 is slightly shifted to the right from the left end of the beam member 79.
It is located in the position. Attached to the bottom of this leg 77
At the left end of the guide bracket 81 and beam member 79, respectively
Roller bracket 83 is attached, and each roller bracket
The guide 83 is attached vertically to the inner surface of the sub guide post 61.
Hold the attached lifting guide rail 85 from the front and rear direction
Guide rollers 87 are rotatably mounted. In addition, the beam member 79 has a shape such as a rotary encoder.
The vertical position detector 89 is installed.
The pinion attached to the 89 rotating shaft is
Rack mounted on the sub guide post 61 parallel to the rail 85
It is engaged with the rod 91. With the above configuration, the lifting housing 71 is
Up and down movement guided by strike 59 and sub guide post 61
Vertical movement speed and vertical movement of the lift housing 71
Understand that the position can be detected by the vertical position detector 89
Let's do it. In order to move the lifting housing 71 up and down,
As shown in the figures and FIG. 6, the main guide post
A lifting cylinder 93 is arranged at a position close to 59.
Balance at the position close to the sub guide post 61.
A cylinder (sub-elevating cylinder) 95 is provided. the above
The base of the lifting cylinder 93 is attached to the sub base 15R.
The tip of the vertically movable piston rod is
It is connected to a bracket 97 attached to the beam member 79. The balance cylinder 95 is located on one side of the lifting housing 71.
Of the main guide post 59 and one leg
This is to ensure smooth vertical movement with the part 75.
The base of the lance cylinder 95 is attached to the sub-base 15L
The tip of the piston rod is vertically movable
It is attached to a material 79 and connected to a bracket 99. In addition, above
The diameter of the balance cylinder 95 depends on the diameter of the lift cylinder 93.
And a hydraulic circuit as described later.
Depending on the configuration, the internal pressure is always
It is kept almost constant. As understood from the above configuration, the lifting cylinder 93
The operation causes the lifting housing 71 to move up and down.
It is. When raising and lowering the lift housing 71,
The side where the lower housing 71 is separated from the main guide post 59
Is supported by the balance cylinder 95
Between the main guide post 95 and one leg 75
Without any phenomena, and always up and down smoothly
Is secured. As described above, the lift housing 93 is lifted by the lift cylinder 93.
After moving the housing 71 up and down as needed,
Elevating housing fixing device to fix at the height position
101 (see FIG. 3 and FIG. 6). This rise
The lowering housing fixing device 101 moves the lowering housing 71 down.
The main guide post
Or at least one of the sub guide post 61
The brake shoe is strengthened by an elastic body such as a disc spring
Press the force on this brake shoe and the main guide post
By friction between 59 or sub guide post 61,
It is also possible to adopt a configuration to prevent the lifting housing 71 from lowering.
Noh. However, in this embodiment, the lifting housing is fixed.
The device 101 is, as understood from FIGS.
It is arranged between the in guide post 59 and the support 63R,
It is configured as shown in FIG. That is, as is apparent from FIG.
The upper part of the id post 59 and the upper part of the support 63R are connected.
A clevis bracket 103 is provided under the upper connecting member 67R.
It is attached by a number of bolts (not shown). This
Levis bracket 103 has bolts and nuts
A plurality of support members 107 such as steel strips are
Each support member 107 has a plurality of ring-shaped
It is held at appropriate intervals by the pacer 109. The lower end of each of the support members 107 is a ring-shaped spacer 1.
09, pipe-like elastic body 111 such as urethane rubber and
The cross-sectional shape is via the fixture 105 consisting of bolts and nuts.
This bracket is connected to the U-shaped bracket 113.
Unit 113 is connected to the lower connecting member 65 through an appropriate number of bolts 115.
Connected to R. Fixing the lifting housing 71 to the support member 107
For this purpose, a part of the lifting housing 71 is
A facing bracket 115 is attached. This bracket 1
15 has a base block 117 facing the support member 107.
Are installed by unscrewing a plurality of bolts (not shown).
The source block 117 is opposed to the support member 107 in the width direction.
A pair of support leg members 119 are integrally attached. Pair of
The support member 119 has a vertical movement facing the support member 107.
The lock cylinder 121 is mounted. The lift lock cylinder 121 is provided to be reciprocally movable.
The distal end of the piston rod 123 faces the support member 107
The pressed block 125 is appropriately mounted. This push
Between the pressure block 125 and the support member 107,
Between the support member 107 and the base block 117
Each has a friction member 127 such as a brake shoe interposed
I have. Each of the friction members 127 is provided with the pair of support legs.
Slidably supported in a support groove 119G formed in the material 119.
The vertical movement along the support member 107 is restricted.
It is what has been. In the above configuration, the lifting lock cylinder 121
Actuate the friction member 127 with the pressing block 125.
When pressed, the friction members 127 and the support members 107
Abutting against the support member 107 by frictional force.
As a result, vertical movement is impossible. Therefore the support member
The lifting housing 71 is fixedly supported with respect to 107.
For example, when the elevating cylinder 93 fails, etc.
Safety can be ensured. Referring again to FIG. 4, FIG. 5 and FIG.
Move the saw blade housing 73 back and forth with respect to the elevating housing 71
The lifting housing 71
On the upper and lower sides of the side of the leg 75 on the right side,
Guide brackets 131 each having a guide member 129
Installed. Similarly, the guide attached to the lower side of the left leg 77
Guide member 133 is attached to the upper surface of
The guide part is located above the guide bracket 81.
The upper guide bracket 135 with the
Have been killed. The guide member 129 provided on the right leg 75
Between and between the guide members 133 of the left leg 77,
A rearwardly projecting rear surface of the saw blade housing 73 is provided.
The left and right front and rear slide members 135R and 135L are
You. Upper and lower sides of the left and right front and rear slide members 135R and 135L
Are guided by the guide members 129 and 133.
Id members 137 and 139 are provided, respectively. And the guide bracket 131 below the right leg 75
And the lower part of the left leg 77
Cylinders 141R and 141L are mounted.
Piston locks that can be moved back and forth
143R and 143L are suitable for the back of the saw blade housing 73.
It is connected as needed. Left and right front and rear cylinders 141R, 141L
Consists of fluid pressure cylinders of the same configuration,
As described, it is configured to work in synchronization
You. The longitudinal movement position and longitudinal movement speed of the saw blade housing 73 are detected.
In order to put out, the front and rear slide member 135R on the right
Rack rod 145 is installed.
Is the rotary encoder attached to the guide bracket 131.
A detector attached to the rotating shaft of the front / rear position detector 147
Nion gear is engaged. With the above configuration, left and right forward and backward movement cylinders 141R and 141L
By appropriately operating the lifting housing 71
The saw blade housing 73 is moved back and forth,
That the position can be detected by the front and rear position detector 147
Will be understood. The fore-and-aft movement of the saw blade housing 73
Since it is performed by the synchronous operation of the rollers 141R and 141L, the saw blade
There is no delay on the left and right sides of the housing 73.
The horizontal movement is smooth and the workpiece W
When cutting in the horizontal direction, do not cut enough on one side.
Accurate horizontal cutting can be performed without occurrence
Things. As described above, it is moved back and forth with respect to the lift housing 71.
The saw blade housing 73 is, as shown in FIG.
Wheels on both sides of the beam member 149
This is provided with a housing 151R and 151L. Left and right
Wheel housings 151R and 151L are understood from FIG.
To form a hollow box.
The front and rear sliding portions are attached to rear wall plates 153 of the housings 151R and 151L.
Materials 135R and 135L are attached integrally as appropriate and
Piston rods 143R, 143L for front and rear movement cylinders 141R, 141L
Are appropriately connected. One wheel housing 151R has a large work inside.
Drive wheel of large diameter enough to cut piece W
155 and large-diameter driven gear 157 are rotatable via shaft 159
Interior. The driven gear 157 has one wheel
Drive motor 161 mounted on the back of the
2) through a speed reducer 163.
A165 is engaged. In the other wheel housing 151L, there is a small-diameter driven wheel.
167, 169 are rotated by shafts 171 and 173 that are vertically separated from each other.
It has been decorated. Of the shafts 171 and 173, the lower side
The shaft 173 is supported by the rear wall plate of the wheel housing 151L.
The shaft 171 on the upper side is a
It is supported by id block 175. The slide block 175 is located inside the rear wall plate.
Slide left and right on the attached left and right guide block 177.
It is movably supported. Slide bro
Guide block 177 to slide the
Tension cylinder 179 is installed.
The cylinder 179 is reciprocally movable in the left and right directions.
The tip of the piston rod connected to the slide block 175
Tied. With the above configuration, the drive wheel 155 and the upper and lower
The endless band saw blade 11 is attached to the driven wheels 167 and 169.
After hanging, upper side by the tension cylinder 179
Pulling the driven wheel 167 to the left in FIG.
With this, an appropriate tension can be applied to the band saw blade 11.
You. The tension cylinder 179 drives the driven wheel 167
The pulling force is always applied by an elastic body such as a disc spring.
It is desirable to keep it up. As described above, in this embodiment, the driven wheel 16
With a small diameter of 7,169, which is vertically separated
The length of the saw blade housing 73 in the left-right direction can be reduced.
The overall configuration of the mounting head 13 can be reduced in size and weight.
It can be. Also. Upper driven wheel 16
7 can be moved in the left and right direction,
The blade 11 can be relatively easily attached and detached and replaced.
You. For the drive wheel 155 and the driven wheels 167 and 169,
So that the band saw blade 11 can be easily attached and detached.
Near the sides of the right wheel housings 151R and 151L,
The side opening / closing lids 181R and 181L are
It is attached to open and close freely in the left and right direction. In addition, on the left and right
Above and below the wheel housings 151R and 151L
The upper opening and closing lid 183R, 183L which can be opened and closed
The lower opening / closing lids 185R and 185L are attached. Therefore, the left and right wheel housings 151R and 151L
Side lids 181R, 181L and upper and lower lids 183R, 18
3L: When 185R and 185L are opened, drive wheel 155 and driven wheel
Sides and top and bottom corresponding to wheels 167, 169 are opened
The drive wheel 155 and the driven wheels 167, 169
The band saw blade can be easily attached to and detached from the band saw blade. For the drive wheel 155 and the driven wheels 167 and 169
To make the removal and replacement of the band saw blade 11 easier.
The beam member 149 in the saw blade housing 73
Is equipped with a band saw blade support device 187. More specifically, as is clear from FIGS. 1 and 2,
The front of the beam member 149 is properly separated in the left and right direction
Support brackets 189R and 189L
Brackets 189R and 189L have saw blade lifting cylinders 191R and 19
1L is supported by pins 193R and 193L so that it can swing back and forth.
Have been. The above-mentioned saw blade lifting cylinders 191R and 191L are vertically movable.
At the lower end of the piston rods 195R and 195L,
L-shaped band saw blade support member 197 extending in the direction
Have been. The band saw blade support member 197 is
Between the wheel 155 and the driven wheels 167 and 169
The upper part of the band-shaped saw blade 11 is supported by a saw blade support member.
At the appropriate position of 197, the band saw blade 11 is prevented from
There is a regulating plate 199 that stops. With the above configuration, endless shape on the saw blade support member 197
With the upper side of the band saw blade 11 supported, the band saw
Drive wheel 155 and driven wheel 169 are attached to the lower side of blade 11.
And hold it. After that, saw blade lifting cylinder
191R and 191L are operated synchronously, and the saw blade support member 197 is driven
Position corresponding to the upper side of wheel 155 and driven wheel 167
To the right position. Then, the saw blade support member 197 is driven by the drive wheel 155 and the slave wheel.
To swing backward in the vicinity of the dynamic wheel 167
The upper side of the band saw blade 11 is driven by the drive wheel 155 and the driven wheel.
That can be hung on the rule 167. Note that the above
By performing the reverse operation, the band saw blade 11 is removed.
Not what you get. Therefore, even when the band saw blade 11 is large and heavy,
Belts for drive wheel 155 and driven wheels 167,169
The hanging and removal of the saw blade 11 can be easily performed. The part where the band saw blade 11 cuts the workpiece W
In order to guide the band saw blade 11 on both sides,
Each of the wheel housings 151R and 151L has a saw blade
The guide devices 201R and 201L are mounted. Left saw blade guide
The device 201L can correspond to the cutting width of the workpiece W.
Position adjustment at the bottom of the left wheel housing 151L.
It is supported by The right saw blade guide device 201R is connected to the right wheel housing.
Is installed in the fixed position at the bottom of the ring 151R.
The saw blade guide device 201R is used to discharge chips adhering to the band saw blade 11.
The rotating brush 203 that removes is rotatably supported.
You. The rotating brush 203 is used to drive the driving wheel 155.
Although it rotates with power from the system,
The details of the rotating brush 203 are explained here.
Omitted. Referring to FIG. 8, FIG. 9 and FIG.
The blade guide device 201L is connected to the left wheel housing 151L.
Positioned in the left and right direction on a support (not shown) provided at the bottom
An arm 205 that can be adjusted and fixed as appropriate is provided.
A box-shaped guide housing 207 at the tip of the arm 205
Have. The guide housing 207 is a distal end of the arm member 205.
Is provided with a fixing plate 209 fixed via a plurality of bolts.
Left and right sides mounted on the fixed plate 209
Equipped with the upper and lower side plates 211R and 211L.
The upper plate 213 to which is attached is configured. Of the two side plates 211R and 211L, one side plate 211
An arc-shaped opening 215 is formed at the bottom of R,
Is formed with a concentric arc-shaped guide groove 217. Ma
In addition, an arc-shaped opening 219 is also provided at the lower portion of the other side plate 211L.
(See FIG. 8), and the opening 219
In the part, an arc with an arc-shaped guide groove 221 formed inside
Guide member 223 is integrally attached. The above two mo
The arc-shaped engaging portions 227 and 22 of the rotating body 225 are
9 is rotatably engaged. The rotating body 225 is used to guide and support the band saw blade 11.
Therefore, the band saw blade 11 passes near the center of rotation of the
Groove 231 is formed therein, and the band saw blade 11
Guide blocks 233 and 235
And one guide block 233 is
By the action of the mini cylinder 237 attached to the moving body 225, the other
Is pushed toward the guide block 235 side. The back of the band saw blade 11 is guided in the groove 231.
Back support block 239 is mounted via pins 241
ing. In addition, the band saw blade 11
A pair of holding rollers 243 and 245 for holding
You. The one holding roller 245 swings through a pin 247.
It is rotatably supported by the swing bracket 249 provided
The swing bracket 249 is provided on the rotating body 25.
Pressed to the other pinching roller 243 side by mini cylinder 251
It is energized. As is clear from the above configuration, the band saw blade 11 is
The holding rollers 243 and 245 and the guide block provided for 5
Both sides are guided by 233,235, and the back
The back side is guided and supported by the support block 239
Things. As described above, proposed to be held by guide blocks 233 and 235
The center in the width direction of the band saw blade 11 to be contained is clear from FIG.
In this way, the shape substantially coincides with the center of rotation of the rotating body 225.
In state. The tip of the band saw blade 11 is oriented vertically downward
Automatically switch between state and horizontal orientation
In order to rotate the rotating body 225, a rotating syringe
DA 253 is provided. The base of the rotation cylinder 253 is
Pivotally supported by a bracket 255 attached to the upper plate 213
The tip of the reciprocating piston rod 257 is
It is pivotally connected to an appropriate position of the rotating body 225 via 59. Therefore, the rotation cylinder 253 is appropriately operated.
Thus, the rotating body 225 is appropriately rotated.
You. In order to regulate the rotating position of the rotating body 225, the rotating body 2
A stopper pin 261 is attached to the projection of
Plate 209 and side plate 211 in the door housing 207
Each has a bracket attached, and each bracket
Stopper bolt 2 with which stopper pin 261 can freely contact
63 is screwed to adjust the position. After rotating the rotating body 225, the rotating body 225 is fixed.
In order to lock the guide members 223
Cylinder 265 is installed.
The reciprocating piston 267 has a rotating body 225
A pressure that allows the engaging portion 229 to be pressed between the guide member 223 and the engaging portion 229.
A piece 269 is integrally attached via a bolt 271. the above
Between the clamping piece 269 and the lock cylinder 265
Elastic body 273 such as a coil spring
You. As can be understood from the above configuration, the rotation series
The rotating body 225 is rotated by appropriately operating the
The band saw blade 11 supported and supported by the rotating body 225 includes a band
Saw blade 11 is twisted about the center in the width direction,
The part is oriented vertically downward and the tooth tip is oriented horizontally
The state is switched to the pointing state. After that,
Rotating body 225 is switched by operating lock cylinder 265
It is fixed in the obtained state. By the way, the right saw blade guide device 201R is
Since the configuration is similar to that of the guide device 201L,
A detailed description is omitted. As can be understood from the above explanation,
The workpiece W placed on the table 3 is a vice device
7, the band saw blade 11
With the tip of the tooth pointing downward.
Of the workpiece W by lowering the working head 13
A vertical cut is made. In addition, the rotation body 225 is rotated by the operation of the rotation cylinder 253.
Moving, and the tip of the band saw blade 11 is directed horizontally forward.
While the band saw blade 11 is in contact with the rear end of the workpiece W.
Descend to the appropriate height to accommodate this, and
Operating the lifting / lowering lock cylinder 121 to cut
The vertical movement of the head 13 is fixed. After that, the cylinders 141R and 141L for forward and backward movement are operated,
By moving the saw blade housing 73 forward,
The cut piece W can be cut horizontally. That is,
Perform horizontal and vertical cutting on workpiece W
Cutting of test pieces from workpiece W
Separation can be performed. By the way, as described above, the workpiece W
When cutting, the supporting slider in the vise device 7
By moving 39R, 39L forward in advance,
When the saw blade housing 73 and the vice device 7
And there is nothing. In the case where the workpiece W is cut in the horizontal direction,
Instead of moving the saw blade housing 73 horizontally,
Move the table 3 horizontally relative to the workpiece
W can be cut into the band saw blade 11 relatively.
is there. Referring to FIG. 11, FIG.
3.Balance cylinder 95 control circuit and forward / backward movement syringe
The control circuits of the motors 141R and 141L are illustrated. A hydraulic pump P rotated and driven by a motor M,
The lifting cylinder 93 is equipped with solenoids SOL1 and SOL2.
Dispose the first solenoid valve 275 at port 3
It is connected via a first oil passage 277 provided. This first oil
In the path 277, the first solenoid valve 275 and the
Pilot operated check
A valve 279 is provided. The oil passage pump P and the balance cylinder 95 are connected to the second oil passage.
281 and the middle of the second oil passage 281
A lancing valve 283 is provided. Balancing valve 2 above
83 connects the second oil passage 281 in the normal case,
The pressure inside the sense cylinder 95 is adjusted to a predetermined pressure.
When the force rises above the force, the balance cylinder 95 is
It serves to connect. That is, Balansin
The valve 283 always keeps the pressure in the balance cylinder 95 almost constant.
It serves to maintain the constant. The cutter moved up and down by the lifting cylinder 93
To control the lowering speed (cutting speed) of the cutting head 13
In addition, a cutting control circuit is connected to the first oil passage 277.
You. More specifically, the pilot operation in the first oil passage 277
Between the rated check valve 279 and the lifting cylinder 93
A third passage 285 branches off from between. In this third oil passage 285
Are the filter 287 and the third oil passage from the branch point side of the first oil passage 277.
2nd solenoid valve 289 that shuts off connection of 285, throttle
Adjustable flow control valve 291 and automatic flow control valve 293
The following is provided. The automatic response flow control valve 293 is a slidably mounted switch.
Pool 295 has a balance spring 297 on one side and the other side
And a pressure chamber 299. This automatic flow control
The control valve 293 is located inside the balance spring 297 and the pressure chamber 299.
The spool 295 is moved by the balance with the pressure of
The third oil passage 285 and the tank are set according to the movement position of the spool 295.
The aperture in the state of communication with the T is adjusted as appropriate.
You. The hydraulic chamber is provided in the pressure chamber 299 of the automatic flow control valve 293.
The fourth oil passage 301 connected to the pump P is connected. This second
Filter 303 and orifice 305 are hydraulic pumps in 4 oil passages 301
They are arranged sequentially from the P side. Orifice of the fourth oil passage 301
A branch oil passage 307 is provided between the disc 305 and the automatic flow control valve 293.
The branch oil passage 307 is connected to the band saw blade 1
Controls the discharge of pressure oil according to the detected value of the back force applied to 1.
A relief valve 309 is provided. With the above configuration, the solenoid of the first solenoid valve 275
When the magnet SOL1 is excited, the lifting system is moved through the first oil passage 277.
Pressurized oil is supplied to the cylinder 93 and the cutting head 13 is raised.
Will be raised. At the same time, the balance cylinder 95
Pressure oil is supplied via the second oil passage 281. As described above, the lifting cylinder 93 and the balance cylinder
Pressure oil is supplied to the nozzle 95 and the cutting head 13 rises.
The cutting head 13 is at the highest position.
And the limit switch provided in the guide column device 9
LS1 is activated. By the operation of this limit switch LS1,
And the solenoid SOL1 of the first solenoid valve 275 is demagnetized
The first solenoid valve 275 is in the neutral position,
The lifting of the putting head 13 is stopped. Next, the solenoid SOL2 of the first solenoid valve 275 is turned on.
When energized, the pressure oil in the lifting cylinder 93 is cut.
It is ejected by the weight of the head 13 and
The ing head 13 descends by its own weight. The above
In particular, when the cutting head 13 is lowered,
The pressure oil in the lance cylinder 95 has a cutting head 13
Because weight acts and the pressure rises,
The valve 283 is connected to the tank T and
Is discharged to the tank T. The cutting head 13 is lowered as described above.
When the cutting head 13 descends to a predetermined position,
When the limit switch LS2 is operated, the first solenoid valve
The solenoid SOL2 of the valve 275 is demagnetized and the first solenoid
Lube 275 is in neutral position. By the operation of the limit switch LS2, the second solenoid
The solenoid SOL3 of the id valve 289 is excited, and the second solenoid
The solenoid valve 289 is switched. Accordingly
Then, the pressure oil in the lifting cylinder 93 flows through the third oil passage 285.
After that, it is discharged to the tank T. Therefore, the amount of pressure oil discharged from the lifting cylinder 93 is
Controlled by the flow control valve 291 and the automatic flow control valve 293
As a result, the speed at which the cutting head 13 descends,
In other words, the cutting speed of the band saw blade 11 with respect to the workpiece W
The degree will be controlled. As described above, by lowering the cutting head 13
Controlling the cutting speed of the band saw blade 11 with respect to the workpiece W
Cutting speed increases or the band saw
Abrasion of blade 11 increases back force on band saw blade 11
And the relief valve 309 tends to close,
The pressure in the pressure chamber 299 of the control valve 293 increases. Inside pressure chamber 299
Pressure rises against the balance spring 297
The spool 295 slides, and the automatic flow control valve 293 moves to the third oil passage.
The communication status of the 285 will be gradually reduced. Therefore, the lowering speed of the cutting head 13 is
The speed gradually decreases, and the band saw blade 11 breaks or
The bending is prevented. When the back force related to the band saw blade 11 decreases, the automatic flow rate
The spool 295 of the control valve 293 is made of a balance spring 297.
The third oil passage 285
The state is normally open, cutting head 13
Is controlled by the flow control valve 291.
become. Referring again to FIG. 11, the cutting head 13
For operating the saw blade housing 73 in the front-rear direction
In order to operate each of the cylinders 141R and 141L for longitudinal movement synchronously,
Each first pressure chamber 311R, 311L of each front and rear cylinder 141R, 141L
Are placed in each of the pressure supply chambers 315R and 315L of the master cylinder 313, respectively.
They are connected via fifth oil passages 317R and 317L. More specifically, the master cylinder 313 is provided at the center.
The inside of the master cylinder 313 is divided into two divided chambers
The pistons are installed in each divided chamber.
1R and 321L are provided. Each of the above pistons 321R, 321L
Is a common pin slidably penetrating the master cylinder 313.
It is integrally attached to the stone rod 323. Accordingly
The supply pressure chambers 315R, 315L in the master cylinder 313.
Are always kept at the same capacity. The second pressure chamber 325R of each of the above-mentioned longitudinal cylinders 141R and 141L,
325L and the hydraulic pump P are connected via a sixth oil passage 327.
In the fifth oil passage 327, the third solenoid at 4 port 3 position is provided.
An id valve 329 is provided. This third solenoid valve
The lube 329 and the master cylinder 313 are connected via a seventh oil passage 331.
Connected. The front and rear movement cylinders 141R and 141L and the
Between the third solenoid valve 329 and the seventh oil passage 331
Is a pilot operated check valve 33
3,335 are arranged. Also, between the pump P and the third solenoid valve 329
Has a pressure reducing valve 337 and a pilot operated chain
Next to the solenoid valve 333, a solenoid with solenoid SOL10
There is a solenoid baffle SV. Still referring to FIG. 11, the pump P and the fifth oil passage
317R and 317L are connected via an eighth oil passage 339, respectively.
You. More specifically, a filter 341, an o
Orifice 343 and pressure reducing valve 345 are arranged sequentially from the pump P side
I have. The above-mentioned pressure reducing valve 345 is connected to the fifth oil passages 317R and 317L.
The branch oil passages 347R and 347L that are connected to each other
The branch oil passages 347R and 347L have a fourth
Solenoid valve 349, 5th solenoid valve 351
It is arranged respectively. Further, between the orifice 343 and the pressure reducing valve 345,
The branch oil passage 353 branched and connected to the eighth oil passage 339 is
Operated check valve 333 and each
The branch oil passage 3 is connected between the
The 53 is provided with a sixth solenoid valve 355 that can be disconnected.
It is set up. In addition, the pilot operated check valve
Between the front and rear moving cylinders 141R and 141L,
Second solenoid valve 289 and flow control in three oil passages 285
The connection with the valve 291 is connected via a ninth oil passage 357. This
The ninth oil passage 357 has a filter 359 and a communication
A seventh solenoid valve 361 is provided. In the above configuration, the third solenoid valve 32
When the solenoid SOL6 at 9 is excited, the hydraulic pump P
Is supplied to the master cylinder 313.
And the piston rod 323 moves rightward in FIG.
Is done. Therefore, each pressure supply chamber 315 in the master cylinder 313
The hydraulic oil in R, 315L is the first of the front and rear cylinders 141R, 141L.
The pressure is supplied into the pressure chambers 311R and 311L. So before
The rear movement cylinders 141R and 141L are operated synchronously,
Saw blade housing 73 in ing head 13 is advanced
It will be. When the saw blade housing 73 is advanced as described above,
As described above, the tip of the band saw blade 11 is
First, by making a cut in the workpiece W
The horizontal cutting of the workpiece W is performed.
You. As described above, the saw blade housing 73 is advanced, and
When the limit switch LS3 is operated in
Valve SV is switched to the shut-off state, and the seventh solenoid valve
The solenoid SOL4 of lube 361 is excited and switched to the communication state
Wrong. Therefore, the band saw blade 11 with respect to the workpiece W
The cutting speed is the same as the vertical cutting, and the flow control valve 29 is used.
1 and automatic flow control valve 293.
You. As described above, when the saw blade housing 73 advances,
The horizontal cutting of the piece W is performed, and the saw blade
When the housing 73 moves forward, the limit switch LS4 is activated.
Is done. By the operation of the limit switch LS4, the
The 7 solenoid valve 361 switches to the shut-off state, and
The solenoid SOL5 of the solenoid 329 is excited, and
The solenoid valve SV is switched back to the communication state. Therefore, the pressure oil of the hydraulic pump P is
To the second pressure chambers 325R and 325L of the nozzles 141R and 141L.
Thus, the saw blade housing 73 is returned to the original retracted position.
When the saw blade housing 73 is retracted and returned, the limit switch
(Not shown) is operated, and the third solenoid valve 329 is operated.
Returns to the neutral position. In the above configuration, the fourth solenoid valve 349
And the solenoid of the fifth solenoid valve 351
Excited to establish communication, each forward / backward movement
Pressure oil on the side of the first pressure chambers 311R and 311L in the cylinders 141R and 141L.
Can be replenished. Also, the solenoid of the sixth solenoid valve 355 is excited.
By switching to the communication state by
Apply pressure to the second pressure chambers 325R and 325L of the
Keeping the blade housing 73 locked in the retracted position
Can be done. As understood from the above description, the band saw blade 11
With the tooth tip oriented horizontally forward, the band saw blade housing 73
To move the workpiece W horizontally.
It can be sharpened. In this case,
The elevating housing 71 is fixed at a predetermined height by the
It can be held constant, and there is a delay on the left and right of the saw blade housing 73.
Without detecting the force behind the band saw blade 11
Because it can control the cut in the direction, it is safe and precise.
Horizontal cutting can be performed with good precision. Referring to FIG. 2 again, the band saw blade 11
In the position below the position where the tool W is cut,
Chips to discharge chips that have fallen onto
A conveyor 363 is provided. This chip conveyor 3
63 is composed of a screw conveyor and its structure
Since the configuration is general, the structure of the chip conveyor 363 is
Detailed description of the configuration is omitted. [Effects of the Invention] As can be understood from the above description of the embodiments,
According to the present invention, the object to be cut placed on the work table is
Cutting head supporting a band saw blade for cutting materials
To be able to move up and down to prepare for the above cutting head.
Band saw between the driven wheel and the driven wheel
A cutting device equipped with a saw blade guide device that guides the blade
And a rotating body rotatably provided on the saw blade guide device.
The band saw blade (11) passes near the center of rotation in (225).
A free groove (231) is formed, and the band is formed in the groove (231).
A guide block for holding and guiding the saw blade (11) is provided.
The above band saw blade (1
1) the center in the width direction and the center of rotation of the rotating body (225)
The band saw blade (11) is provided in a substantially coincident state.
The state of pointing in the horizontal direction and the state of pointing in the vertical downward direction
Automatically rotate the rotating body (225) in order to rotate
A rotation operating device is provided for
5) A fixing device is provided to fix the non-rotatable
Things. As is clear from the above configuration, in the present invention, the band
The rotating body in the saw blade guide device for guiding the saw blade is a band saw.
With the tip of the blade pointing vertically downward and pointing horizontally
And the rotating body is automatically turned
There is a rotation actuating device for turning around
A fixing device capable of fixing the rotating body is provided. Therefore, according to the present invention, for example, the tip of the band saw blade is
Fixed by a fixing device in a state where it is oriented in the horizontal direction
The first cut of the material to be cut, and then rotate
The rotating body is automatically rotated by the operating device and the teeth of the band saw blade are
Point the tip vertically downward and fix it with a fixing device
By performing the second cutting in the fixed state,
Cutting and separating cut pieces such as test pieces from the material to be cut
It can be. When cutting material to be cut with a band saw blade
Since the rotating body is fixed by a fixing device,
Direction direction of the tip of the band saw blade does not change.
Cutting can be performed reliably and safely. Rotate the rotating body as described above to level the tip of the band saw blade.
When turning in the vertical and downward directions,
Band saw blade that is pinched and guided by the guide block provided for
The center in the width direction of the shaft and the center of rotation of the rotating body substantially coincide with each other.
The band saw blade is centered on the center in the width direction.
You will be twisted. Therefore, large cuts such as ingots
If the band saw blade is wide and large to cut the material,
However, it can be easily twisted without giving excessive force to the band saw blade.
As well as the amount of torsion can be reduced and the life of the band saw blade
Can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention, and FIG. 1 is a front view of a cutting apparatus according to the present invention. FIG. 2 is a right side view of the same. FIG. 3 is a plan view of the same. FIG. 4 is a sectional view taken along the line IV-IV in FIG.
Some parts are omitted and only main parts are shown. FIG. 5 is a right side view of FIG. 4 as viewed from the right. FIG. 6 is a plan view of FIG. 4 as viewed from above. 7 and 3 are enlarged cross-sectional views taken along the line VII-VII in FIG. 7, in which one part is shown in a partial cross section and one part is omitted to show a main part. FIG. 8 is an enlarged sectional view taken along the line VIII-VIII in FIG. 1, showing only a main part. FIG. 9 is a sectional view taken along line IX-IX in FIG. FIG. 10 is a bottom view of FIG. 9 as viewed from below, and shows a partial cross section. FIG. 11 is a hydraulic circuit diagram showing only the main parts to explain the operation of the main parts. 3 Work table, 11 Band saw blade, 13 Cutting head 5 Base, 155 Drive wheel, 167, 169 Drive wheel 201R, 201L Saw blade guide device

Claims (1)

(57) [Claims] A cutting head supporting a band saw blade for cutting a material to be cut placed on a work table is provided so as to be vertically movable, and the band saw blade is guided between a driving wheel and a driven wheel provided on the cutting head. In the cutting device provided with a saw blade guide device, a band (23) through which the band saw blade (11) can pass freely is provided near a rotation center of a rotating body (225) rotatably provided on the saw blade guide device.
A guide block for holding and guiding the band saw blade (11) is provided in the groove (231), and the widthwise center of the band saw blade (11) held and guided by the guide block and the turn are formed. The band saw blade (11) is provided so that the center of rotation of the moving body (225) substantially coincides with the center of rotation, and the tip of the band saw blade (11) is turned in a horizontal direction and in a vertically downward direction. A cutting device, comprising: a rotation operating device for automatically rotating the rotating body (225); and a fixing device for fixing the rotating body (225) so as not to rotate. .