JPH0314264Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a processing machine that performs processing such as cutting and punching of section steel, and the sizing device for setting processing dimensions is extended according to the length of the workpiece. This invention relates to an extension device for a sizing section in a processing machine.

[Conventional technology]

Conventional processing machines of this type have adopted a dog abutment stopper system for the sizing section. The sizing portion of the dog abutting stopper method is provided on a dog shaft extending in the left-right direction (hereinafter referred to as the X-axis direction) from the main body provided with the processing blade so that the dog can be moved along the axial direction, This is a dog shaft with scales installed side by side.
To set the workpiece to the dimensions to be machined, first use the scale mentioned above to move the dog to the position to be machined, then fix the dog in that position with a nut or bolt, and then Currently, the workpiece is positioned by bumping it against the machine and then processed.

[Problems to be solved by the invention] For this reason, with the conventional method, it takes a lot of time to position the dog, and in particular, it is necessary to position the dog every time the machining dimension is changed. It is not easy to extend the sizing section for setting. In other words, when extending the fixed size part of the dog abutting stopper method,
To connect an extension dog shaft so that there is no difference in level while the dog shaft is supported on a base, and to be able to slide smoothly from the dog shaft on the main body side to the extension dog shaft without any hindrance. This is not an easy task, and the structure becomes large and complex, and the assembly technology becomes more sophisticated depending on the length to be extended, and the machining dimensions that need to be positioned according to the length to be extended are also required. There was a problem that the accuracy of the data also decreased.

Therefore, in view of the above circumstances, the present invention allows the sizing section of the processing machine to be simply and easily extended, and the length that can be extended can be extended without any restriction. An object of the present invention is to provide an extension device for a sizing section in a processing machine that can always perform highly accurate positioning without causing a drop in accuracy.

[Means and actions to solve the problem]

In order to achieve the above-mentioned object, the present invention interposes a longitudinal movement pinion rotationally driven by a motor and a longitudinal movement rack that meshes with the longitudinal movement pinion on one side of the main body equipped with a processing blade, The sizing base on which the work is placed is arranged so that it can move freely back and forth.
The sizing base is provided with a stopper rack and a stopper rail in a direction orthogonal to its longitudinal movement and along the longitudinal direction, and a stopper that meshes with the stopper rack of the sizing base and is rotationally driven by a motor. In the sizing section of the processing machine, which is equipped with a stopper device that can run along the stopper rail and comes into contact with the workpiece, an extension base is connected to the sizing base via a relay slide plate. With,
The extension rail and the stopper rail and the extension rack and the stopper rack are each connected in a straight line by a pedestal, and the stopper device is connected to the stopper rail and the extension rail according to the position and length of the workpiece to be machined. The workpiece is positioned in the longitudinal direction by running from the sizing base side to the extension base side along the direction. To position the workpiece in the longitudinal direction, if a motor rotates the longitudinal pinion that meshes with the longitudinal rack and moves the sizing base in the longitudinal direction, the driven shaft connected to the rotating shaft of the longitudinal pinion can also be positioned. Since it rotates, the extension base also moves back and forth by the same amount at the same time as the sizing base due to the engagement of the pinion for moving the extension base back and forth on the driven shaft and the rack for moving the extension base back and forth on the stationary side. Next, the workpiece is machined, which is brought into contact with the stopper device and positioned by the movement of the stopper device and the back and forth movement of the sizing base and the extension base as described above.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an extension device for a sizing section in a processing machine according to the present invention will be described below with reference to the drawings. In FIGS. 1 to 3, 1 is the main body of the processing machine. The main body 1 has a throat section 5 between a machine base 4 and a head section 3 into which a workpiece is inserted for processing such as cutting or punching. A control box 2 is attached to the head section 3 in which a control section such as an input device and a microcomputer is housed. A ram 7, which is moved up and down by a hydraulic cylinder, faces the throat portion 5. A rotary table 8 is provided on the machine base 4 of the throat portion 5, and a plurality of types of machining blades 9 are attached to the rotary table 8 depending on the type of machining. The rotary table 8 can be rotated so that the blade 9 can be selected. The machining blade 9 consists of a fixed blade and a movable blade, and the movable blade is struck by the striker 6 at the lower end of the ram 7 to process the workpiece between the fixed blade and the movable blade. It is also possible for the processing blade 9 to be of a separate type in which a movable blade is provided at the lower end of the ram 7 and a fixed blade is provided on the rotary table 8. On the machine stand 4, as shown in FIG. 4, a material feeding table 10 surrounding the rotary table 8 except for the rear side is provided so as to be movable back and forth, that is, in the Y-axis direction. As shown in FIG. 5, a bracket 11 is fixed to the front end of the material feeding table 10, and a handle 13 is attached to the bracket 11 with a pillow unit 12 interposed therebetween. A slide pipe 15 is fixed to the rotating shaft 14 of the handle 13. The slide pipe 15 has a slot 15a along the longitudinal direction. A slide shaft 16 is inserted into the slide pipe 15 so as to be slidable in the longitudinal direction. A locking pin 17 such as a bolt is implanted in the slide shaft 16.
7 through the slot 15a, and
When the material feeding table 10 moves in the Y-axis direction, even if the handle 13, rotating shaft 14, and slide pipe 15 move accordingly, the rotation of the handle 13 is not caused by the slide shaft 16. It is now possible to communicate. Slide shaft 16
is rotatably supported on the machine base 4. A joint lever 21 is connected to the slide shaft 16 via a universal joint 18, a joint lever 19, and a joint pipe 20, and a universal joint 22 is connected to the joint lever 21.
The bevel shaft 23 is connected via. The bevel shaft 23 is rotatably supported on the machine base 4.
Bevel shaft 23 is connected to rotary shaft 26 via bevel gears 24 and 25. The rotary shaft 26 is rotatably supported on the machine base 4 and has a rotary 27 made of a material such as urethane having high frictional resistance at its upper end. The rotary 27 is always in pressure contact with the circumferential surface of the rotary table 8. The rotary table 8 has a fitting hole 2.
8, and the lock pin 29 is always inserted into the insertion hole 28 with an elastic biasing force, and only when rotating the rotary table 8, the lever E shown in FIG.
If the lock pin 29 is pushed down against the elastic biasing force, the lock pin 29 can be pulled out from the insertion hole 28. As shown in FIGS. 4 and 6, the material feeding table 10 has two linear motion bearings 30 at an appropriate interval on the inner surface of a hanging wall 58 on one side. The rails 31 provided on the side surfaces of the machine base 4 are sandwiched so that the rails 31 can run. The rail 31 is fixed to the machine base 4 via a pedestal 59. On the other side of the material feeding table 10, there is a roller 3 that rolls on a pedestal 32 via a bracket 33a.
3 will be provided. The pedestal 32 has a height adjustment bolt 32a embedded therein, and is fixed to a bracket 32b provided on the other side of the machine base 4 via the height adjustment bolt 32a. The pedestal 32 can be moved up and down with respect to the bracket 32b by a height adjustment bolt 32a, so that the parallelism of the material feeding table 10 with respect to the machine base 4 can be adjusted. The pedestal 32 is provided with a rack 34 for longitudinal movement extending in the Y-axis direction. A motor 37 is connected to the bottom surface of the material feeding table 10 via an installation stand 38.
A gear 36 is fixed to the output shaft of the motor 37, and a pinion 35 for longitudinal movement is meshed with the gear 36. The longitudinal movement pinion 35 is meshed with the longitudinal movement rack 34, and the backlash can also be adjusted by the height adjustment bolt 32a. A part of the upper surface of the machine base 4 is cut out into a concave shape, and a clamp guide 3a is installed in the cutout.
The clamp guide 3a has a T-shaped groove 3b, and a T-nut 3c is housed in the T-shaped groove 3b so as to be movable in the Y-axis direction. The clamp lever 41 is inserted into the T-nut 3c through the through hole of the material feeding table 10, and is screwed into the T-nut 3c. A main scale 39 is attached to the clamp guide 3a, and a material feeding table 10 is attached to the clamp guide 3a.
A vernier measure 40 is attached to the. It goes without saying that the material feeding table 10 has a window hole corresponding to the vernier scale 40 so that the scale of the main scale 39 can be read. An engaging element 10e is provided on the hanging wall 58 of the material feeding table 10, and the engaging element 10e controls the drive of the motor 37 by coming into contact with limit switches LS ₁ and LS ₂ that regulate the limits of forward and backward movement. It is designed to be stopped. As shown in FIGS. 1 to 3, a support section 42 for receiving a long workpiece is attached to one side of the material feeding table 10. As shown in FIGS. The support part 42
A suitable number of rollers 44 and 45 are pivotally supported on a base 43 at appropriate intervals, and one end of the base 43 is fixed to the material feeding table 10. The other side of the base 43 is supported by a pedestal 46 so as to be movable in the Y-axis direction together with the material feeding table 10 with a roller 43a interposed therebetween. The rollers 44 and 45 have a long shaft length and a short shaft length arranged coaxially to form a set, and the roller 45, which has a particularly short shaft length, supports an angle material as a workpiece. It's becoming more convenient. Furthermore, as shown in FIGS. 1 and 2, a sizing section 47 is provided on the other side of the material feeding table 10.
Attached. The sizing section 47 fixes one end of the sizing base 48 to the other side of the material feeding table 10 similarly to the support section 42 described above. The other side of the sizing base 48 is supported by a pedestal 49 so as to be movable in the Y-axis direction together with the material feeding table 10 via a roller 48a. A roller 50 with a long shaft length is mounted on the fixed size base 48.
A plurality of rollers 50 and 51 are coaxially supported, and a plurality of rollers 50 and 51 are arranged at appropriate intervals. A stopper device A is provided in the sizing section 47. As shown in FIG. 7 and FIG.
is fixed, and a stopper rail 54 is laid on the pedestal 52 along the longitudinal direction of the sizing base 48, parallel to the plane formed by the rollers 50, 51. Further, a stopper rack 53 is installed on the lower rear side of the sizing base 48 via a pedestal 53a. The stopper rail 54 has two rails at appropriate intervals.
A holder 56 is mounted so as to be freely movable along a stopper rail 54 via two linear motion bearings 55. Each linear motion bearing 55 holds the stopper rail 54 in such a way that it cannot be separated from the stopper rail 54 and can run freely. Therefore,
The holder 56 is configured to run parallel to the sizing base 48 by a stopper rail 54 and a linear motion bearing 55. A motor 58 is fixed to the holder 56 via a motor base 57. As shown in FIG. 8, the motor 58 is connected to an output shaft 59 via a coupling 60 to a gear shaft 61 positioned on one axis.
The gear shaft 61 is rotatably supported by the holder 56, and has a stopper pinion 62 that meshes with the stopper rack 53. The gear shaft 61 further extends from the stopper pinion 62 and connects to the coupling ring 63.
Rotary shaft 65 of rotary encoder 64 via
Connect to. The rotary encoder 64 is fixed to a mounting plate 66. The mounting plate 66 is attached to the holder 5
6 via a spacer 67.
In this way, since the output shaft 59 of the motor 58 and the rotation shaft 65 of the rotary encoder 64 are arranged on one axis, the amount of rotation of the motor 58, that is, the rotation amount of the stopper pinion 62 and the stopper rack 53 is The amount of feed due to engagement can be directly transmitted to the rotary encoder 64 and measured, and as a result, highly accurate positioning control can be performed. Further, as shown in FIG. 7, a height adjustment bolt 68 is interposed between the holder 56 and each linear motion bearing 55 so as to adjust the backlash between the stopper pinion 62 and the stopper rack 53. . The height adjustment is
As shown in FIG. 7, after loosening the bolt 56a that fixes the holder 56 and the linear motion bearing 55, by turning the height adjustment bolt 68, the height adjustment bolt 68 screwed into the holder 56 can be adjusted. Since the tip is in contact with the linear motion bearing 55, the holder 56 moves toward and away from the linear motion bearing 55, and thereby the stopper pinion 62 also moves toward and away from the stopper rack 53. The meshing condition can be adjusted freely. The bolt 56a is
The holder 56 is inserted through a long hole and is screwed into the linear motion bearing 55. The holder 56 further includes a stop arm 69.
is pivoted so that it can swing freely. The stop arm 69 is
The rollers 50 and 51 are used to abut the workpiece.
It is designed so that it can be positioned above the A height adjustment bolt 70 is screwed into the stop arm 69, and the tip of the height adjustment bolt 70 is
It is brought into contact with an arm stopper 71 formed on the holder 56 and provided with a cushion material, and when the height adjustment bolt 70 is turned, the stop arm 69
can be adjusted so that it is oscillated and arranged parallel to the rollers 50 and 51.

As shown in FIGS. 1 and 2, a sizing extension part 80 is connected to the sizing part 47. As shown in FIGS. As shown in FIG. 9, the fixed length extension part 80 includes a driven shaft 98, which will be described later, and a pinion 1 for longitudinal movement of the extension base.
It has the same structure as the fixed size part 47 except for the rack 104 for moving the extension base back and forth. In other words, the extension base 81 has the same shape as the fixed size base 48.
Similarly, a plurality of coaxial rollers 82 and 83 are disposed on the extension base 81 at appropriate intervals. A pedestal 84 is fixed to the rear surface of the extension base 81 at appropriate intervals, and an extension rail 85 is fixed to the pedestal 84. It goes without saying that the extension rail 85 is formed in the same shape as the stopper rail 54 described above. An extension rack 87 is installed at the rear of the lower surface of the extension base 81 via a pedestal 86. A leg seat 88 is fixed at the end of the extension base 81, and a roller 89 is attached to the lower end of the leg seat 88.
The roller 89 is rotatably placed on a foot stand 90. In order to connect the fixed size extension part 80 to the fixed size part 47, as shown in FIGS. 10 to 12,
Abut the end of the sizing base 48 with the tip of the extension base 81, avoid the area where the stopper rack 53 and the extension rack 87 are installed, and then move the sizing base 4.
8 and the extension base 81, a relay slide plate 91 is attached to the lower surface of the fixed-size base 4.
8 and extension base 81 and relay slide plate 9
1 with rivets or bolts. When the extension base 81 abuts against the fixed size base 48, the end surfaces of the stopper rack 53 and the extension rack 87 and the stopper rail 54 and the extension rail 85 come into contact, respectively. And the stopper rack 53
In order to fix the stopper rack 53 and the extension rack 87, as shown in FIG. Connect with the rack 87 with each end abutted. On the other hand, in order to fix the stopper rail 54 and the extension rail 85, the fixed size base 48 and the extension base 81 are fixed in the same manner.
A pedestal 94 is fixedly installed over the pedestal 94, and the stopper rail 54 and the extension rail 85 are connected on the pedestal 94 with their respective ends abutted against each other. Further, an interlocking shaft 96 is connected to the rotating shaft 35a of the longitudinal pinion 35 shown in FIG. 4 via a coupling ring 95. Furthermore, a driven shaft 98 is connected to the interlocking shaft 96 via a coupling 97, as shown in FIG. At the end of the driven shaft 98, as shown in FIGS. 11 and 12, it is rotatably supported by a bearing 99 on the leg seat 88 via a coupling 105, and a pinion 100 for longitudinal movement of the extension base is fixed. A bracket 101 is fixed to the leg stand 90, and a pedestal 103 is fixed to the bracket 101 via a height adjustment bolt 102. An extension base longitudinal movement rack 104 that meshes with an extension base longitudinal movement pinion 100 is fixedly mounted on the pedestal 103. It goes without saying that the longitudinal direction of the extended base longitudinal movement rack 104 extends in the Y-axis direction. The height adjustment bolt 102 moves the pedestal 103 up and down to adjust the backlash between the extension base longitudinal movement pinion 100 and the extension base longitudinal movement rack 104.

In order to connect the second, third and subsequent fixed-size extensions to the fixed-size extension 80, the same structure as the fixed-size extension 80 is connected to the relay slide plate 91.
and are sequentially connected by pedestals 93 and 94. In this case, the second, third and subsequent driven shafts are connected to the driven shaft 98 via a coupling, and the connected driven shafts are provided with an extension base for longitudinal movement which engages with an extension base longitudinal movement rack having exactly the same configuration as above. Set up the pinion. In addition, in Fig. 1, 106,1
07 is a guide rail for suspending the cord of the motor 58.

Next, the operations of the sizing section 47 and the sizing extension section 80 will be explained. When the motor 58 is driven by a command from the control section in the control box 2 and the stopper pinion 62 rotates, the stopper pinion 62 is meshed with the stopper rack 53, so the holder 56 is moved together with the motor 58 to the stopper. It runs parallel to the sizing base 48 along the rail 54 for use. When the size of the workpiece to be machined is longer than the length of the sizing base 48, the holder 56 moves from the sizing base 48 to the extension base 81 and runs along the extension rail 85. The linear motion bearing 55 moves and runs from the stopper rail 54 to the extension rail 85 without any problem, and the stopper pinion 62 also moves from the stopper rack 53 to the extension rack 87 and meshes with it without any problem. When the command value from the control section of the control box 2 and the current value detected by the rotary encoder 64 match, the drive of the motor 58 is stopped by the command from the control section inside the control box.
Next, by abutting the workpiece from the support portion 42 through the throat portion 5 and against the stop arm 69, the distance from the end face of the workpiece to the center of the machining blade 9, that is, the machining dimension can be set. Further, depending on the shape and width of the workpiece, it is necessary to move the workpiece in the Y-axis direction to position the workpiece with respect to the processing blade 9.
In such a case, if the motor 37 is driven while reading the scale using the main scale 39 and the vernier scale 40, the pinion 35 for longitudinal motion will rotate via the gear 36, and the pinion 35 for longitudinal motion will rotate. Since the moving racks 34 are engaged, the material feeding table 10 moves back and forth. On the other hand, the pinion 35 for longitudinal motion
When the pinion 100 rotates, the extension base longitudinal movement pinion 100 also rotates via the interlocking shaft 96 and the driven shaft 98. Since the pinion 100 for moving the extension base back and forth is engaged with the rack 104 for moving the extension base back and forth, the end of the extension base 81 also moves back and forth by the same amount at the same time as the material feeding table 10. When the material feeding table 10, furthermore, the sizing base 48 and the extension base 81 move back and forth to a predetermined position, after stopping the drive of the motor 37, the material feeding table 10 is moved to the machine base 4 by the clamper lever 41. Fixed to.

[Effect of idea]

As described above, according to the extension device for the sizing section in a processing machine according to the present invention, the sizing section of the processing machine can be simply and easily extended so that the stopper device can move on its own.
Moreover, the length that can be extended can be extended without any limit, and the accuracy of positioning dimensions will not be degraded even when the sizing portion is extended.

In other words, when positioning the sizing base in the front-rear direction perpendicular to the longitudinal direction of the workpiece relative to the main body on which the machining blade is installed, not only the sizing base but also the extension base are Since it moves back and forth by the same amount when engaged with the moving rack, the sizing base and the extension base are always positioned in a straight line, and when the sizing base is moved back and forth, the end of the extension base does not move and the sizing is done. Effectively corrects problems where the base and the extension base are not aligned in a straight line and deflection occurs, and this deflection causes dimensional errors in the machining position of the workpiece not only in the front-rear direction but also in the left-right direction, reducing machining accuracy. It is very convenient to use because it can prevent it from happening.

[Brief explanation of the drawing]

The drawings show an embodiment of the extension device for the sizing section in a processing machine according to the present invention, and FIG. 1 is a front view of the main part of the processing machine, and FIG. Figure 3 is a right side view of the processing machine, Figure 4 is a plan view showing the rotating table and material feeding table, Figure 5 is a mechanical diagram showing the rotation mechanism of the rotating table, and Figure 6 is a diagram showing the back and forth movement of the material feeding table. A mechanical diagram showing the mechanism, Fig. 7 is a sectional view of the main part showing the structure of the stopper device, Fig. 8 is a bottom view of the main part of the stopper device, Fig. 9 is a left side view of the fixed length extension part, and Fig. 10 is a sectional view of the main part showing the structure of the stopper device. Figure 11 is a sectional view of the main parts showing the connection points between the fixed size part and the fixed length extension part, Figure 11 is a bottom view of the main part of the fixed size part and the fixed length extension part, and Figure 12 is a cross sectional view of the main part of the fixed size part and the fixed length extension part. It is a main part front view. 1...Main body, 34...Rack for longitudinal movement, 35...
... Pinion for longitudinal movement, 47... Sizing section, 48...
Fixed size base, 53... Rack for stopper, 54
...Rail for stopper, 58 ...Motor, 62
... Pinion for stopper, 80 ... Fixed size extension part, 81 ... Extension base, 85 ... Extension rail,
87... Extension rack, 91... Relay slide plate, 93, 94... Pedestal, 100... Pinion for longitudinal movement of the extension base, 104... Rack for longitudinal movement of the extension base, A... Stopper device.

Claims (1)

[Scope of utility model registration request] A back-and-forth movement pinion that is rotationally driven by a motor and a back-and-forth movement rack that meshes with the back-and-forth movement pinion are interposed on one side of the main body equipped with a machining blade, and a fixed-size base on which a workpiece is placed is moved back and forth. The sizing base is provided with a stopper rack and a stopper rail in a direction orthogonal to the longitudinal movement thereof and along the longitudinal direction, and the sizing base is provided with a stopper rack and a stopper rail that mesh with the stopper rack of the sizing base. In the sizing section of a processing machine, which is equipped with a stopper pinion rotationally driven by a motor and has a stopper device that can travel along the stopper rail and comes into contact with the workpiece, a relay is installed at the end of the sizing base. An extension base is connected via a slide base, and the extension base is provided with an extension rack and an extension rail, and a pedestal is provided to straddle the extension rack and the stopper rack, and the extension rail and the stopper rail, respectively. An extension base is fixedly installed to connect the extension rack and the above-mentioned stopper rack, and the extension rail and the above-mentioned stopper rail in a straight line, and to the rotating shaft of the longitudinal movement pinion for moving the above-mentioned sizing base back and forth. A pinion for longitudinal movement of the extension base is fixed to the driven shaft, which engages with a rack for longitudinal movement of the extension base installed on a fixed side such as the floor below the end of the extension base. 1. An extension device for a sizing section in a processing machine, characterized in that a roller that can freely run in the front and rear directions is attached to the sizing section of the processing machine.