JPS59224207A - Edge preparation unit - Google Patents

Abstract

PURPOSE:To always carry out a stabilized edge preparation by moving a milling cutter, whose axial direction is perpendicularly held to the end face of a member to be machined, in the three dimensional directions by means of more than one feed motor while preparing said end face to a certain groove angle. CONSTITUTION:When an outside edge preparation is to be carried out for, e.g., the end face 10a of a steel member 10 formed in an L-shape, first, a milling cutter 30 is set on the outside of the steel member 10 by means of feed motors 24, 26, 28. Then the cutter 30 is rotated by means of a motor 31 to start cutting while, at the same time, the cutter 30 is moved in the X direction through the feed motor 24. When the cutter 30 arrived at the bent part of the steel member 10, the rotation of the feed motor 24 is stopped while the rotation of the feed motor 26 is started, and the moving direction of the cutter 30 is changed 90 deg. in the direction of Y while cutting of the end face 10a is carried out. Thereby, an always stabilized edge preparation can be conducted eliminating the need for monitoring by an operator.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a beveling device, and more particularly to a beveling device for bevelling an end face of a steel material such as an angle steel or a channel steel at a predetermined angle.

Steel materials such as angle steel and channel steel that are generally used as structural members in shipbuilding and the like are used after grooves are formed on the end faces of the steel materials in order to increase welding strength. 1 and 2 are front and side views showing an example of a conventional beveling device, in which reference numeral 1 is a rack shaft placed parallel to a steel material 10, which is a workpiece, and 2 is a rack shaft placed parallel to a steel material 10, which is a workpiece. A gas torch 3 is provided on the cart 2, which is moved on the rack shaft 1 by a feed motor (not shown). That is, in the conventional beveling device, the torch angle of the gas torch 3 is manually adjusted and fixed, and the carriage 2 is moved along the end face 10a of the steel material 10 by the feeder motor, thereby cutting the end face 10m by gas welding and beveling. This is what we do.

However, when beveling is performed using such conventional equipment, the fusion cut adheres to the end face of the steel material after gas fusion cutting.
In the end, it was necessary to finish with a grinder, and there was a drawback that a beveling at a constant angle could not be obtained. Also,
In the past, semi-automatic work required constant operator supervision, and there was considerable variation in the quality of the bevel.

The present invention has been made in order to eliminate the above-mentioned drawbacks, and its purpose is to provide an automatic bevel processing device that can always perform stable bevel processing and does not require operator supervision. be.

In order to achieve the above object, the present invention moves a milling cutter whose axis direction is perpendicular to the end surface of the workpiece by moving it in a three-dimensional direction using a plurality of feed motors, while moving the end face of the workpiece at a predetermined angle. The groove is machined to form a groove.

Embodiments of the present invention will be described below with reference to the drawings.

3 to 6 (a) and 6 (b) are views showing one embodiment of the present invention, and FIGS. 3 and 4 are a plan view and a front view showing the configuration of the beveling device. be.

In FIGS. 3 and 4, reference numerals 21 and 22 denote X-axis and Y-axis frames arranged substantially parallel to the end surface 10a of the steel material 10, which is a workpiece, and 23 denotes a Y-axis frame 22.22.
A fixed rack shaft is provided between the two. This fixed rack shirt 23 moves a movable rack shaft 25 provided between the X-axis frame 21 and the fixed rack shaft 23 by a feed motor 24 in the direction shown by the arrow X by a feed screw mechanism. .

Further, the movable rack shaft 25 is connected to the carriage 2 provided on the movable rack shaft 25 by a feed motor 26.
7 is moved in the direction shown by arrow Y by a feed screw mechanism.

On the other hand, the carriage 27 moves a milling block 29 equipped with a milling cutter 30 whose axial direction is supported perpendicularly to the end surface 10a of the steel material 10 in the direction shown by arrow 2 by a feed motor 28, as shown in FIG. It is. That is, the milling cutter 30 is movable in three dimensions by a feeding motor 24.degree. 26.28, and its rotation is adjusted by a drive motor 31 and a reduction gearx (not shown).

The rotation amounts of the feed motors 24, 26, and 28 are each controlled by a control section that will be described later.

FIG. 5 is a block diagram showing the configuration of the control section of this device. As shown in the figure, the control unit 41 of this device includes, for example, a numeric keypad 42 and a central processing unit (CPU) 4.
3, storage device (P-ROM) 44, D/A converter 45,
It consists of a pulse width converter 46 and a display device 47. The %E processed member is stored in the storage device 44. The machining path corresponding to the shape 7, the dog hole, and the type of bevel (for example, inside bevel, outside bevel, etc.) is stored as data, and is read out by inputting a code from the numeric keypad manual device 42. ing. The data read by the code input is processed by the central processing unit 43, and is supplied to each feed motor 24, 26, 28 as a noggle signal via the D/A converter 45 and the A pulse width converter 46. There is.

Next, the operation will be explained. Figure 6(a) shows the machining path of the milling cutter.
is an explanatory diagram showing the case of outer beveling, and FIG. 2(b) is an explanatory diagram showing the case of inner beveling.

For example, when performing outer beveling on the end face 10h of the steel material 10 formed in an L-shape, the milling cutter 30 is moved to the outer side of the steel material 10 by the feed motor 24, 26, 28, as shown in FIG. is set to When the setting is completed, the milling cutter 30 is rotated by the drive motor 31 and moved at a constant speed. milling cutter 30
When reaching the curved part 10b of the steel material 10, the feed motor 26
stops rotating, and then moves to the feed motor to cut the end face 10a.

In addition, in the case of inner beveling, as shown in the same figure (b), 7
The rice cutter 30 is set on the opposite side to that for outer beveling, and performs cutting while being moved in the direction of the arrow by the feed motor 24. Arm.

Then, when the milling cutter 30 reaches the curved part 10b of the steel material 10, the feeding motions 24, 26 start.

28, the milling cutter 30 is moved to the outside of the steel material 10, and cutting at a small diameter is performed using the R drawer at the tip of the milling cutter. When the bent portion 10b of the steel material 100 is cut to a predetermined root gap amount, the milling cutter 30 returns to its original position, and this time performs cutting while being moved in the direction of the medical mark by the feed motor 26.

As described above, in this embodiment, the end face of the part to be machined is beveled using a milling cutter, so that beveling at a constant angle is always possible without adhesion of melted fragments to the end face. Furthermore, since the moving direction of the milling cutter is controlled by the control unit, there is no need for operator supervision, and since the milling cutter itself moves, beveling can be performed even on long workpieces without taking up much space.

As is clear from the above description, according to the present invention, a milling cutter whose axial direction is supported perpendicularly to the end surface of a workpiece is moved and controlled in three-dimensional directions by a plurality of feed motors to perform beveling. As a result, it is possible to provide a bevel processing apparatus that can provide stable bevel processing quality and that does not require operator supervision.

[Brief explanation of the drawing]

Figures 1 and 2 are diagrams showing the configuration of a conventional beveling device. Figure 1 is a front view, Figure 2 is a side view, and Figures 3 to 6 (,) (b) are 3 is a plan view showing the configuration of the beveling device, FIG. 4 is a front view, and FIG. 5 is a diagram showing an embodiment of the present invention. Figure 4, Figure 6 (,)
(b) is a diagram showing the machining path of the milling cutter, (,) is an explanatory diagram in the case of outer beveling, and (b) is an explanatory diagram in the case of inner beveling. 21...X-axis frame, 22...Y-axis frame, 2
3...Fixed rack shaft, 25...Movable rack shaft, 24, 26.28...Feed motor, 30...
- Milling cutter, 41...control unit.

Claims (1)

[Claims] A milling cutter whose axial direction is supported perpendicularly to the end surface of a workpiece, a drive motor for rotationally driving the milling cutter, a plurality of feed motors for moving the fly cutter in three-dimensional directions, and a drive motor for rotating the milling cutter; A bevel processing device comprising: a control section that controls the amount of rotation;