JPH01316113A - Working method for intermediate bent product in v-shaped groove working machine - Google Patents

Abstract

PURPOSE:To work the frame of an entrance door and a window frame with high precision by working a V-shaped groove due to the start or completion of the intermediate grinding onto a plate member and carrying out the bending work, having the above-described V-shaped groove inside through a proper cutting line, and by projecting a flange part from the intermediate part of the plate member. CONSTITUTION:The start or completion of the intermediate cutting can be carried out by shifting a clamping device and properly assembling the two axis control such as XZ and XY, and two V-shaped grooves 75 on the completion of the intermediate cutting and two V-shaped grooves 75 on the start of the intermediate cutting are worked. Then, a cut line is formed by a cutting machine not shown on the figure in the intermediate part of the contiguous V-shaped grooves 75, and as shown by the broken line the top edge part 79 of the V-shaped groove 75 is punching-worked by a punch press not shown on the figure. Finally, each cut part is bent, having each V-shaped groove 75 inside, by a bending machine not shown on the figure, and an intermediate bent product having a flange 81 can be manufactured.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a method for processing an intermediate folded product using a V-shaped groove processing machine.

(Prior Art) Conventionally, when manufacturing products such as entrance door frames and window frames in which a flange protrudes from the middle part O of a board (see the explanatory diagram of Step 102 in Figure 1), ,
Since the end of the bent part is located in the middle of the plate material, it is difficult to form a V-shaped groove in the bent part, so bending is performed as is without forming a V-shaped groove in the bent part. was.

(Problem to be solved by the invention) However, when forming a V-shaped groove during bending,
This is necessary to minimize the bending radius, and is especially essential for bending thick plates with high precision.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method for processing with high precision a product having a shape in which a flange portion protrudes from the middle portion of a plate material, such as an entrance door frame or a window frame.

[Structure of the Invention] (Means for Solving the Problems) The method of processing an intermediate folded product using a V-shaped groove machining machine of the present invention, which solves the above problems, is as outlined in Fig. 1. , a work clamp device 33 that grips the plate material W and positions it on the work table, a carriage that is moved along the longitudinal direction of the work table, and a cutting tool (bit 53) that is moved up and down with respect to the carriage. Ta V
Using a shape groove processing machine, the plate material W is positioned by the work clamp device 33, and then the carriage and the cutting tool 53 are operated sequentially or simultaneously, thereby starting mid-cutting A or mid-cutting on the plate material W. A V-shaped groove is machined according to the end B (step 101), and then a bending process is performed to make the V-shaped groove inside through an appropriate cutting line (step 102), and a flange 81 is formed from the middle of the plate material W. It is characterized by obtaining a folded product with a protruding portion.

(Function) In the method of processing an intermediate folded product using the V-shaped groove processing machine of the present invention, a V-shaped groove is machined in the bent portion of the flange 81 by mid-cutting start A or mid-cutting end B. 7 langes 81 are bent with the shape grooves inside. Note that appropriate cutting lines necessary for bending can be created using a punching machine, a laser processing machine, or the like.

(Example) Referring to Figures 2 to 4, the moth processing machine 1 (used in this example) is operated in the left-right direction (in Figure 4, the front and back directions of the paper).
A box-shaped lower frame 3 extending relatively long is provided, and left and right side plates 5 are erected on the left and right sides of the lower frame 3, respectively. The upper parts of the left and right side plates 5 are integrally connected by a vertical intermediate frame 7, and are also connected to each other by a suitable connecting plate 9. .

A work table 1 is mounted on the lower frame 3 to support the plate material W to be processed (not shown in FIGS. 2 to 4).
1 is attached to the work table 11, and an auxiliary table 13 for supporting the plate material W of the work table 11 is attached to the work table 11.

Further, a plurality of brackets 15 are attached to the rear side of the lower frame 3 at appropriate intervals. A guide rail 19 is installed on the top of each bracket 15 and extends through the pedestal 17 to a position close to the work table 11. The guide rail 19 holds the plate material W in the front-rear direction (Y direction). ) is supported by a Y-axis positioning device for positioning.

That is, a gearbox 21 is disposed on each of the two intermediate pedestals of the pedestal 17, and a ball screw 27 rotates between a bearing 23 in the gearbox 21 and a bearing 25 on the front side. It is freely supported. Both gearboxes 21 are equipped with a suitable connection structure so that both ball screws 25 rotate in conjunction with each other. A pulley 29 is fixed to the recessed end of the right ball screw 27, and the pulley 29 is rotatably connected to the servo motor MY fixed to the bracket (15) via a timing belt 31.

Further, a Y-axis carriage 35 having a plurality of work clamp devices 33 is supported on the guide rail 19 so as to be movable in the front and rear direction. Further, a nut member 37 that is screwed into the ball screw 27 is attached below the carriage 35.

Therefore, the servo motor MY is driven and the ball screw 27 is
By rotating in an appropriate direction, the carriage 33 can be moved back and forth.

In other words, the plate material W gripped by the work clamp device 33 can be positioned at any position on the Y axis.

In order to process a V-shaped groove on the upper surface of the plate material W positioned by the Y-axis positioning device, the work table
A processing head 4 equipped with a cutting tool 39 is located above the
1 is provided with seven axes and an X-axis positioning device that can freely adjust the position in the vertical direction (two directions) and move it in the horizontal direction.

More specifically, a guide rail 43 extending in the L right direction is attached to the intermediate frame 7, and an X-axis carriage 45 that supports the processing head 41 in a vertically movable manner is supported on this guide rail 43. . carriage 45
In order to move the left and right direction, between the left and right side plates 5,
A ball screw 47 is provided parallel to the guide rail 43.

One end of this ball screw 47 is connected to a servo motor MX (not shown) via an appropriate coupling mechanism, and is screwed into a nut member (not shown) provided inside the carriage 45. Therefore, by driving the servo motor Mx, the ball screw 47 can be rotated, and the X-axis carriage 45 can be moved to any position at any speed.

Further, on the upper part of the processing head 41, there is a ball screw whose upper end is connected to the servo motor MZ via an appropriate gear, and whose middle part is screwed into four nut members fixed to the carriage 45. 51 is rotatably supported. Therefore, by driving the servo motor MZ, the processing head 41 equipped with the cutting tool 39 at the lower end can be moved to any height and at any speed.

In this embodiment, the cutting tools 39 are plural (5).
It consists of a cutting tool 53 and a cutting tool holder 55 that integrally connects these cutting tools 53, and the tip of the cutting tool 53 is formed in a V-shape. Each byte 53 above is
It is attached to the tool holder 55 in a detachable and positionally adjustable manner. In this embodiment, when forming a V-groove on the upper surface of the plate material W, the groove protrudes downward toward the rear so that the succeeding cutting tool cuts deeper than the preceding cutting tool.

Therefore, the plate material W1. : When machining i7, the resistance acting on each cutting tool 53 is small. Further, deep grooves can be processed with one stroke of the processing head 41.

In order to firmly fix the plate material W to the work table 11 after positioning the plate material W, a temporary holding device 57 is provided at the lower part of the intermediate frame 7.

In addition, the temporary holding device 57 detects this operation and presses the plate material W.
A plate thickness detector St (see Fig. 5) is attached to detect the thickness of the plate material W in the pressed state.

Therefore, by operating the temporary holding device 57 using, for example, a pneumatic cylinder and pressing the arm tip of the device 57 against the upper surface of the workpiece W, the workpiece W can be firmly fixed on the upper surface side of the work table 11. Further, the plate thickness t can be detected while the plate material W is being pressed.

In order to prevent the ball screw 47 from bending due to the weight of the X-axis carriage 45, the processing head 41, etc., the ball screw 47 is normally supported from below, and when the processing head 41 passes, it is moved backward. processing head 41
A plurality of screw support devices 59 are provided at appropriate intervals in the left-right direction to avoid interference with the screw support devices 59. Therefore, when the processing head 41 moves in the left-right direction, the height of the cutting tool 53 does not vary greatly.

On the side surface of the upper frame 5 on the right side of the groove processing machine 1, one end of an arm 61 having a reverse spiral shape with a horizontal portion higher than the height of the upper frame 5 is attached in an i-shape so that it can freely rotate by an allowable angle, An operation panel 63 is provided at the other end of the arm 61 and is rotatable around a vertical axis by an allowable angle. Therefore, the operation panel 63 can be moved left and right within an allowable range, and its operation surface can be oriented in a direction that is easy for the operator to see.

Referring to FIG. 5, the control device 65 is mainly composed of an NC device 67, and includes the aforementioned operation panel 63 and a driver for driving each of the motors MX, MY, and MZ.
x, DY, DZ, and input/output interfaces 69.71 are connected. Each motor Mx, MY
, Mz includes a position detector Ex for detecting the operation results.
, EY, EZ and speed detectors TGx, TGY, T
Gz is connected and tail.

The six input interfaces are connected to the plate thickness sensor S, and the output interface 71 is connected to solenoids 5OL1.S○12, which divide the workpiece clamping devices 33 into three groups and operate them in predetermined combinations. 5OL3 is connected Saletail.

With the above configuration, the NC device 67 includes the servo motor MX,
MY, MZ are driven, and the Y-axis carriage 35, the X-axis carriage 45. The processing heads 41 can be controlled to arbitrary positions at arbitrary speeds. That is, by driving the Y-axis carriage 35, the processing position of the plate material W held by the work clamp device 33 can be positioned directly below the cutting tool 53. Further, by driving the X-axis carriage 45 and the processing head 41, the cutting tool 53 can be moved in the X-axis direction while controlling the processing head 41 to a predetermined height. Furthermore, the cutting tool 53 can be raised simultaneously while moving the Y-axis carriage 35.

FIGS. 6 and 7 show an example of machining a 7-shaped groove.

FIG. 6 shows that after fixing the plate material W on the work table 11, the cutting tool 53 is moved to position x 1 in the X-axis direction, and in the cutting end section AP during the penetration, the cutting tool 53 is raised by circular interpolation of the XZ two axes. This is an example of machining a V-shaped groove 75 which is partially cut.

Figure 7 also shows a cutting start section A after fixing the plate material W.
In S, the tool 53 is placed in position x 2 by linear interpolation of the XZ 2 axes.
Then, only the IX axis is driven, and in the intermediate cutting end section AP from position x 3, the cutting tool 53 is raised again by linear interpolation of This is an example of processing. The arrow in the figure indicates the moving direction of the cutting tool 53.

As shown in these examples, in the groove machining area 1 of this example,
Cutting can be started in the middle of the plate material W, or cutting can be finished in the middle of the plate material W.

In this method, the cutting tool 53 is servo-controlled, so unlike raising the cutting tool 53 using the so-called MIa function of the NC device, there is no unevenness in the finish at the end point of descent and the starting point of the amount of rise, and there is no risk of damaging the cutting tool 53. Never happened.

Comparing the control systems for the XZ two axes in Figures 6 and 7,
The linear interpolation shown in FIG. 7 is more advantageous. That is, in the example of circular interpolation shown in FIG. 6, the radius of the circular arc must be determined according to the thickness of the plate material W, making it difficult to control the speed to obtain a good finish.

Therefore, the example of linear interpolation shown in FIG. 7 has been developed, and a more suitable processing example is shown in FIG.

That is, in the example shown in FIG. 8, when moving from control of only the X axis to interpolation of two axes of XZ, the cutting speed of the cutting tool 53 is set to the same speed F in both controls. The same is true when shifting from X22-axis control to X-axis only control at the start of mid-cutting.

In other words, at the start and end of midway cutting, it is preferable to keep the cutting speed (combined speed in biaxial interpolation) constant with respect to the cutting surface of the plate material W at least at the bending point. In this way, by keeping the cutting speed constant at the bending point, the machining accuracy becomes good and the XYZ axes can be easily controlled.

The fact that machining accuracy is improved has been proven through multiple experiments.

FIG. 9 is an explanatory diagram showing an example of controlling the XYZ axes for the plate material W.

In the illustrated example, when machining two figure-7 grooves from point P2 to point P4 and from point P7 to the left end of plate material W, points Pa, P+, P2, etc. are indicated in parentheses in this order. It has been shown that it is sufficient to control the axes sequentially. That is, in this example, first, the work clamp device 33 is moved in the Y-axis direction with respect to the cutting tool 53 located at the point Po. Then point P1
Lower the cutting tool 53 and move it to the point P on the right side of the cutting start position.
At around 2, the X-axis is also operated to start machining faster. While keeping the cutting tool 53 at a predetermined height, move it to near point P4, perform linear interpolation on the XZ two axes as shown in FIG. .

After that, in order to start cutting the next V-shape in the middle from point P5, linear interpolation is performed on the XY two axes to point P6, and the following is performed.
By controlling each axis in the order of X, ZX, and XY, two V-shaped grooves are machined at the end of mid-cutting and at the start of mid-cutting.

In this way, in this example, by incorporating two-axis control such as xz and xy as appropriate, it is possible to start cutting midway or end cutting midway, and in addition, machining efficiency can be further improved.

FIG. 10 and FIG. 11 are explanatory diagrams of specific processing examples.

As mentioned above, in the groove processing machine 1 of this example, the clamp device 33
As shown in FIG. 10, there are two V-shaped grooves 75 where cutting is finished mid-way, and two 7-shaped grooves where cutting is started midway, as shown in FIG. Process 75.

Next, a cutting line (not shown) is placed between the adjacent V-shaped grooves 75, and then a V-shaped groove is formed as shown by the broken line.
Holes are formed in the seven tip ends of the letter-shaped groove 75 by, for example, a punch press (not shown).

Finally, by bending the bright areas with each V-shaped groove 75 inside using a bending machine (not shown), an intermediate folded product having a flange 81 as shown in FIG. 11 can be manufactured. can.

As described above, in the method of processing the intermediate bent product of this example, by starting mid-cutting A or mid-cutting end B, the V-shaped groove 75 can be machined only in the bent portion of the plate material, and the flange 81 can be raised. Can be bent with precision.

Furthermore, as shown in FIG. 10, by drilling a small hole in the tip M portion 79, the invalid portion can be easily removed without deteriorating the appearance.

The present invention is not limited to the embodiments described above, but can be implemented in other forms of currency by making appropriate design changes.

[Effects of the Invention] As described above, according to the present invention, since it has the configuration as claimed, a V-shaped groove can be formed in the bent portion of the flange, and the flange portion can be formed with high precision. It can be bent, and it is possible to form front door frames and window frames with a flange protruding from the middle of the board with high precision.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing *i of the present invention, Figs. 2 and 3 are a plan view and a front view of a V-shaped groove machining machine that can carry out the present invention, and Fig. 4 is a diagram of Fig. 3. IV-IV sectional side view, FIG. 5 is a block diagram of the control device, FIG. 6 is an explanatory diagram of an example of machining by halfway cutting, FIG. 7 is an explanatory diagram of a machining example by starting and halfway cutting, and FIG. FIG. 8 is an explanatory diagram showing a preferred example of linear interpolation, FIG. 9 is an explanatory diagram of a cutting tool locus, FIG. 10 is an explanatory diagram of a machining example, and FIG. 11 is an explanatory diagram of a product example. 1 Grooving machine 11 Work table 33 Work clamp device 35 Y-axis carriage 39 Cutting tool 53 Bit 65 Control device 75 -- V-shape Shape groove 81... Flange MX, MY, Mz... Servo motor W... Plate materials X, Y, Z... Shaft agent Patent attorney Yasu Miyoshi 1 Figure 5 Figure Z Figure 8

Claims (1)

[Claims] A V-shaped groove processing machine equipped with a work clamp device that grips a plate material and positions it on a work table, a carriage that moves along the longitudinal direction of the work table, and a cutting tool that moves up and down with respect to the carriage. , position the plate material with the work clamp device, then operate the carriage and the cutting tool sequentially or simultaneously to machine a V-shaped groove on the plate material by starting cutting midway or completing cutting midway, and then Performing a bending process with the V-shaped groove on the inside through an appropriate cutting line,
A method for processing an intermediate folded product using a V-shaped groove processing machine, characterized in that a folded product having a flange portion protruding from the middle of the plate material is obtained.