JPS5997807A - Edge preparing device of square steel pipe and the like - Google Patents

Abstract

PURPOSE:To perform edge preparation corresponding to a work material with any size by providing a pair of vice pieces and a presser plate with an adjusting means. CONSTITUTION:A pair of vice pieces 4a, 4b are arranged on both sides of a guide rail 3 and are opened or closed centripetally by a feed screw 6. An open/ close operation handle 7 is provided at one end of the feed screw 6. A lateral beam 9 is suspended across stanchions 8a, 8b adjustably for its position, an oil hydraulic cylinder 10 is fixed to it, and a presser plate 11 is fitted to the lower end of a piston rod 10a. A work material W is clamp-fixed by adjustment of the vice pieces 4a, 4b and the presser plate 11 in response to its size and then is performed the edge preparation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for forming a bevel on the outer peripheral edge of a square steel pipe, a round pipe, or the like.

Conventionally, beveling of various types of pipe materials has often been done by Ganukatsuting, but when this method is used, the shape of the cut periphery becomes inconsistent or changes in quality, so it is not suitable for welding. Therefore, the defective cutting was corrected manually using a grinder or an electric planer, and the deteriorated layer was removed, but this method was inefficient and required a significant amount of labor.

In recent years, a type of cutter head has been developed that moves the cutter head in the X-axis and Y-axis directions to perform beveling on the peripheral edge, but this type of cutter can process flat edges without any problems, but it is difficult to cut corners. I was unable to process a certain small radius part. Therefore, for this part, we still have no choice but to rely on manual processing such as grinding.1. From the viewpoint of improving productivity and processing accuracy, there was a demand for the development of a beveling machine that can automatically process up to this rounded part.

The present invention has been made in view of the above circumstances, and the first object of the present invention is to adopt a profile cutting method along the outer periphery of the workpiece material, that is, the welding periphery surface, and to create a groove on the entire periphery. The second purpose is to enable continuous and automatic machining, as well as high-precision and highly efficient machining. The third purpose is to stabilize machinability by using a balance weight that engages with the load applied to the cutting mechanism, and to facilitate the operation of the JD cutting mechanism. Our goal is to provide edge processing machines.

An embodiment embodying the present invention will be described in detail below with reference to the drawings.

The basic structure of the beveling machine according to the present invention includes a clamping device that clamps and fixes a workpiece material such as a square steel pipe (hereinafter simply referred to as a workpiece) in a predetermined position, and a cutting machine that performs cutting on the outer peripheral edge of the workpiece. First, the configuration of the former clamping device will be described.

In FIGS. 1 to 3 of the drawings, reference numeral 1 indicates a horizontal bed with a machine base 2 installed on the front side of the machine base 1 (right position in Figure 1), and a third A horizontal guide tray /L/3 shown in the left-right direction in the figure is installed. A pair of vise pieces 4a and 4b on both sides are engaged with this guide tray/I/3. They are opened and closed in a centripetal manner by a feed screw shaft 6 whose opposite threads are screwed together.

The feed screw @6 is rotatably supported at both ends of the guide rail 30, and an opening/closing operation handle 7 is fixed to one end thereof. It should be noted that other means for opening and closing the vice pieces 4a and 4b include an oil cylinder, an electric motor, etc., and it goes without saying that these devices may be used as appropriate.

Next, reference numerals 8a and 81) indicate two pairs of left and right columns erected on both sides of the horizontal bed 2 on which the vice device is installed, and a cross beam 9 is installed on these columns 8a and 8b so as to be vertically adjustable. A hydraulic cylinder 10 is fixed to the center of the cross beam 9 with the piston rod 10a facing downward, and a press plate 11 is attached to the lower end of the piston rod 10a. In addition to the above, the cross beam 9 has a screw type lifting adjustment means 1.
After the height is set by 2, fixing pin 13.13 (C
Therefore, the suppressing plate 11 is connected to the supports 8a and Bb and is made to correspond to processed materials having various dimensions.

The dimension number 14 is a receiving roller for a set of work materials arranged on the front side of the horizontal bed 2, and this receiving roller 14 coincides with the receiving surface 3a formed on the upper surface of the guide rail 3 described above. It will be arranged as follows. In this embodiment, a conveyor device C consisting of free rotating rollers is connected to the front side of the receiving roller 14, and the workpiece is clamped and pressed from both sides by the vice pieces 4a, 41). In addition, the workpiece is clamped and fixed in a fixed position by being pushed from above by the suppressing plate 11.

Next, a description will be given of a ruler device that positions the workpiece when cutting the workpiece.

This ruler device protrudes in front of the workpiece when feeding the workpiece in order to bring the tip of the workpiece into contact and determine its position, and also retracts from there when clamping is completed and cutting (7) begins. configured to do so. That is, a rotating arm 15+d has an abutment piece 16 attached to its tip, and the other end of its root is pivotally supported by a horizontal bearing meta/L' 17 provided on the horizontal bed 2. This rotating arm 15 has a piston rod 18B.
A hydraulic cylinder 18 is associated with the piston rod 1.8a facing upward, and when the piston rod 1.8a is extended, the abutment piece 16 projects upward and faces the front side of the lower side of the workpiece. Also piston rod 18B
When the contact piece 16 is shortened, the contact piece 16 is retracted downward from there.

Here, the abutting piece 16 is screwed onto the rotary arm 15 and can be adjusted in its position in the front and back direction, so that the attachment position of the workpiece to the cutter, which will be described later, can be finely adjusted for processing. The root face of the cutting surface at the time of cutting is set as required.

(8) The details of the clamping device that presses and fixes the workpiece in a predetermined position are shown to the north.

Next, a description will be given of the cutting device provided corresponding to the clamping device. Reference numeral 21 denotes a machine frame disposed on the rear side of the machine frame l (left position in FIG. 1). A pair of vertical frames 21B and 21 on both sides erected on the machine stand 1
b, and a cross beam 21C connecting the upper ends of these vertical frames 21a and 21b, forming a gate shape. A vertical guide 2222 is provided inside each of the vertical frames 21&, 21b, and this guide 22.
22, the substantially rectangular support plate 23 can be moved up and down.

Further, the horizontal beam 21e is configured to freely support a pair of feed screw shafts 24124 by rotating downwardly. '24 is screwed into a nut cylinder 25.25 fixed to the upper end of the support plate 23, and the vertical position of the support plate 23 is adjusted by rotating the nut cylinder 25.25.

An electric motor M1 is associated with the feed screw shaft 2424 through a transmission gear means 26, 26 and a link @27 provided at the upper end of each of the feed screw shafts 2424, and the electric motor M1 is rotationally driven by forward/reverse rotation control of the electric motor M1. Ru.

Next, in the center of the support plate 23 is a large circular recessed hole 2.
8 is bored, and a circular rotary disk 29 is rotatably provided in this recessed hole 28 via a support member and a rotational drive mechanism, which will be described later.

That is, the support member is composed of trochanters 30 arranged at four corners of the support plate 23, and these trochanters 3
0... are in contact with the outer peripheral surface of the rotating disc 29. Further, the rotational drive mechanism includes a gear' (
1, a pinion 33 linked to this gear 31 via an intermediate gear 32, and an electric motor M2 with a reduction gear that fixes this pinion gear 33 to an output shaft. 29 as the second
Rotate at a constant speed in the direction shown by arrow Q in the figure. It should be noted that this electric motor B112 is equipped with an electrical rotation speed variable means, so that the revolution speed can be freely set.

Further, a straight and wide recessed hole 34 is bored in the center of the rotary disk 29, and a pair of linear guides 35. 35 are provided. A movable body 36 is slidably engaged with this linear guide 35.35, and furthermore, this movable body 36
is equipped with a cutting mechanism and a suppressing operation mechanism that presses the cutting mechanism toward the center of the rotary disk 29 via this member.

First, to explain the pressing operation mechanism, this mechanism is composed of a hydraulic cylinder 37 disposed in the recessed hole 34, whose piston rod 37B is tied to the movable body 36 side, and the cylinder tube 37 The b side is connected to the peripheral edge of the rotary disk 29. and the piston rod 37
When contracting a, the movable body 36 is moved in the direction approaching the center of the rotary disk 29, and the piston rod 37B
Move in the direction away from the center when expanding.

A means for squeezing and discharging oil is connected to the hydraulic cylinder 37, so that the moving speed of the movable body 36 can be adjusted appropriately.Next, the cutting mechanism first moves the bearing sleeve 38 as described above. It is attached and fixed to the body 36, and the spindle 39 is rotatably supported by the bearing sleeve 38. Then, one end of the spindle 39 is made to protrude forward (to the right in FIG. 1), and a cutter 40 is attached to the tip. At the other end, a gear 41 is fixed, and an electric motor M is associated with this gear 41 via a pinion 42.

Here, the cutter 40 is a milling cutter having an umbrella-shaped cutting edge, and the angle of the groove that can be cut is determined by the slope (corner angle) of the cutter. Therefore, various types of milling cutters are available depending on the applicable beveling angle, and they are installed in a replaceable manner.

Further, at the end of the spindle 39 immediately before the cutter 40, a release rotor 43 is rotatably supported with a size substantially equal to the minimum diameter of the cutter 40. The copying roller 43 comes into contact with the outer peripheral surface of the workpiece to determine the position of the cutter 40 when the cutting device is moved toward the center.

Next, in FIG. 2, reference numeral LSI indicates a limit switch associated with the dock 44 attached to the rotary plate 29, and this limit switch L8. controls the one-turn movement of the rotary disk 29 and its stop position F, and sets the cutting position of the cutting mechanism at the time of starting cutting. Incidentally, in this embodiment, when the cutting mechanism moves toward the center, it is set so that the direction is downward. Also, the code LS2 is a limit switch that detects that the cutting mechanism is in the retracted position.
This limit switch LS2 is used to confirm the completion of the cutting process and stop the driving of various actuators such as the electric motor and the oil field cylinder. ' Code 45 +d A balance weight having a weight corresponding to the load applied to the moving body 36, that is, the combined weight of the moving body 36 and the cutting mechanism, and this balance weight 45 and the bearing cylinder 38 of the cutting mechanism are connected by a check 746. At the same time, this Che 746 is multiplied by Nderoget 47.47 to balance the two.

Now, in order to perform the required beveling on the outer peripheral edge of a square steel pipe using the beveling device configured as described above, first, attach the cutter 40 having the required bevel cutting angle to the spindle/I/39. Then, the trochanter 43 is pivotally supported by following the tip of the trochanter.

Once the cutter 40 has been installed, the workpiece on the conveyor device (→Φ-Tsuguy) is fed through the receiving surface 3al' of the guide tray lv3 in the clamping device, and its tip is placed in the protruding state. Positioning is performed by abutting against the contact piece 16.

When the position in front of the tip of the workpiece is determined as described above, the abutment piece 16 is retracted downward and the workpiece is clamped from the left and right sides by the pair of vise pieces 4a and 4b on both sides. The pressing plate 11 presses the material from the -L side and firmly clamps it. In this case, the center of the workpiece in the left-right direction is exactly aligned with the center of the rotary disk 29 by the centripetal vice pieces 4a, 411.

In addition, when the workpiece is set as shown in Section 2 and the cutter 40 is cut from above, the outer edge of the material has the required root face hole and bevel as shown in Figure 4. Each part and contact piece 1 are cut in advance so that the angle θ is equal to the cutting allowance.
6 position is set. Note that the adjustment of the root face R in the above is performed by adjusting the abutment piece 16 back and forth, but the amount of adjustment at that time is based on a conversion table using the material thickness, bevel angle, and root face as specifications. Determined by Further, this conversion table may be associated with the contact piece 16 as a dimension display scale.

Once the above operations have been completed, add: ``Align the vertical center of the material with the center position of the two J boards.

This operation is performed by moving the support plate 23 upward or downward under the control of the electric motor M, and when this is done, the cutting mechanism is pressed toward the center of the rotation plate 23. When is displaced with the rotation of the rotary plate 23, the pressing force can be applied almost equally to any peripheral edge of the workpiece, that is, the top and bottom, left and right sides, and the four corners. Once the setting of
The cutting mechanism is moved toward the center of the rotary disk 29 via. When this is done, the cutter 40 cuts along the outer edge of the central part of the upper side of the workpiece until the trochanter 43 comes into contact with it and then stops, and this cut jd forms the desired bevel shape.

When the cutting operation of the cutter 40 is completed, the rotary drive mechanism is operated while the suppression operation mechanism remains in operation, and the rotary disk 29 is rotationally driven in the direction of the arrow Q in FIG. In this way, the suppression operation mechanism allows the trochanter 4 to be imitated.
3 is always pressed against the outer periphery of the material and rolls, and the cutting process is performed not only on flat sides but also on rounded corners. The required beveling process can be uniformly performed on the edge of the material by one rotation.

In addition, this beveling device is provided with a balance weight 45 that balances the load applied to the cutting mechanism, so that when cutting each part of the workpiece, there is no restriction 181 in the pressing force and stable cutting action is achieved, as well as high precision. It can be processed.

As is clear from the description of the embodiments, in the present invention, the machine base is equipped with a support plate, and this support plate is equipped with a rotary plate that is driven and operated by a rotational drive mechanism. A cutting mechanism is provided, which includes a moving body that is pressed by a pressing operation mechanism and moves toward the rotation center of the rotary plate, and a cutter that is fixed to the moving body and rotated by a motor,
The end 1C of the cutter is equipped with a profiling rotor that rolls in contact with the outer periphery of the workpiece material, and is used to perform beveling along the welded circumferential surface of square steel pipes etc. using the profiling cutting method. It exhibits excellent effects as it can be performed with high precision, automatically, and efficiently.

The present invention has a mechanism for adjusting the height of a rotary plate equipped with a cutting mechanism, so that the cutting mechanism can be applied toward the center of the workpiece of any size to smoothly perform cutting. It produces the effect that can be achieved. Furthermore, by providing a balance weight that balances the load applied to the cutting mechanism, when cutting each part of the workpiece material, the imbalance in the pressing force is eliminated and the cutting action is stabilized, resulting in constant and high precision. This has the effect of allowing machining to be performed and also allowing smooth and easy operation of the cutting mechanism.

It should be noted that the present invention is not limited to the embodiments described above, but can also be embodied in the following embodiments.

(a) When the material to be processed is a round steel pipe, the configuration of the clamp device must be changed as appropriate to accommodate this material.

(b) The entire clamping device should be constructed so that it can be moved and adjusted in the front-back direction, so that the beveling amount can be adjusted while the workpiece material is being clamped.

b) The receiving roller and conveyor device should be actively driven to automatically carry in and take out the workpiece material, and at the same time, the edge of the material should be brought into automatic contact with the ruler device.

(d) The rotating disc is provided with a rotating arm that operates toward the center of the rotating disc, and the rotating arm is equipped with a cutting mechanism.

(e) Providing two or more movable bodies or cutting mechanisms so that these cutting mechanisms work simultaneously to improve cutting efficiency, or optionally by providing the cutting mechanism with various cutters. to be able to use them alone.

(f) When two cutting mechanisms are provided at symmetrical positions and are operated simultaneously, they should be controlled by the same suppression operation mechanism to simplify the configuration.

(g) As the pressing operation mechanism, use a 1 to 1 torque motor, a ``heavy motor'' equipped with a torque limiter mechanism, etc.

(f) Prepare various copying trochanters with different diameters and use them interchangeably to change the opening amount setting.

(S) Inject a chip removal fluid (liquid, air) near the transfer side of the copying trochanter to prevent erroneous copying operations.

(v) When groove processing a square steel pipe with a square cross section,
A detection means (for example, a limit switch) is provided to detect when the cutter of the cutting mechanism approaches the vicinity of the corner, and based on this detection signal, the rotary plate is activated for a certain period of time. To reduce the rotation speed and correct the machining speed.

(l) Provide a means to vary the rotational speed of the rotary plate according to the size of the workpiece material to be clamped.

Furthermore, although this is not the gist of the present invention, the cutting mechanism, which is a main part of the present invention, is operated by a suppressing operation mechanism outward from the center of the rotary plate, and the copying trochanter is controlled to be machined. By bringing it into contact with the inner circumferential surface of the material, the inner surface of the tube can be beveled. In this case, the copying trochanter must be set to a smaller diameter than the minimum radius existing within the tube.

[Brief explanation of drawings]

The drawings show an embodiment of the beveling/processing device according to the present invention, and FIG. 1 is a side view partially cut away from the fir tree, and FIG. 2 is a cross-sectional side view of the cutting device shown in FIG. Front view FIG. 3 is a front view of the clamping device taken from the Y-Y direction in FIG. 1. FIG. 4 is an explanatory diagram of the groove shape to be machined. 1: Machine base 2: Horizontal bed 3 Guide rails 4a, 4b: Vise piece 8a181]: Support column 9: Cross beam ]0: Hydraulic cylinder 11: Press plate 12
: Lifting adjustment means 14: Receiving roller 15: Rotating arm 16: Contact piece 18: Hydraulic cylinder 21: Machine frame 21a, 21b: Vertical frame 2] C: Cross beam 23: Support plate 24: Feed screw shaft 25: Nut Tube 2
8: Recessed hole 29: Rotating plate 30: Trochanter 34: Recessed hole 35: Straight guide 36: Moving body 37: Hydraulic cylinder 38: Bearing tube
39 Nissin spindle 40: Cutter 43: Copying trochanter 45: Balance weight 46: Cheno 4f: Nupuroketto M,, M2, M3: Electric motor LS1,
LS2: Limit switch C: Conveyor device Applicant: Shinko Kogyo Co., Ltd. No. 3 - -119・13 13 1 1ji, 1 -1-・l 10a 11. 1.9.1 0 0
. 0 0i
4b
4a3a 1,! ,-mu

Claims (3)

[Claims] (1) The machine base is equipped with a support plate, and this support plate is equipped with a rotating plate that is driven and operated by a rotary drive mechanism, and this rotating plate is further provided with a rotating plate that is suppressed by a pressing operation mechanism. A cutting mechanism is provided, which has a movable body that moves toward the rotation center side, and a cutter that is fixed to this movable body and rotated by a motor, and an end of the cutter that is in contact with the outer circumferential surface of the workpiece material. Beveling equipment for square steel pipes, etc., characterized by being equipped with a copying trochanter that rolls on the (2) One side of the machine base is equipped with a clamp device that clamps the workpiece material in a fixed position, and the other side of the machine base is equipped with a support plate that can be vertically adjusted in correspondence with this clamp device. The support plate is equipped with a rotary plate that is driven and operated by a rotary drive mechanism, and the rotary plate further includes a movable body that is compressed by a pressing operation mechanism and moves toward the rotation center of the rotary plate, and this movable body. The cutting mechanism is equipped with a cutting mechanism having a cutter fixedly attached to the machine and rotated by a motor, and a copying trochanter is attached to the end of the cutter, which rolls in contact with the outer peripheral surface of the workpiece material. Beveling equipment for square steel pipes, etc. (3) The machine base is equipped with a support plate, and this support plate is equipped with a rotary plate that is driven and operated by a rotary drive mechanism, and furthermore, this rotary plate is equipped with a rotary plate that is pressed and operated by a push operation mechanism. A cutting mechanism is provided, which has a movable body that moves toward the rotation center of the machine, and a cutter that is fixed to the movable body and rotated by a motor, and further has an end of the cutter that is in contact with the outer circumferential surface of the workpiece material. Beveling processing of a square steel pipe, etc., characterized in that a copying trochanter that rolls is attached, and a balance weight that is connected to the cutting mechanism and has a weight balanced with the load applied to the cutting mechanism is attached. Device.