JPH0750094Y2 - V-shaped groove processing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a V-shaped groove processing machine. More specifically, the present invention relates to a dedicated machine for processing a groove having a V-shaped cross section in a bent portion in order to minimize bending curvature when bending a plate material having a relatively large thickness.

(Prior Art) Conventionally, the processing of the V-shaped groove has been performed using a shaper or a plano mirror.

However, these general-purpose machines have a problem that they cannot perform special processing such as starting the processing in the middle of the machine or stopping the processing in the middle of the machine, and are not easy to use in various other aspects.

As a conventional V-shaped groove processing machine, for example,
As shown in Japanese Patent Laid-Open No. 56-42822, for example, a long work placed on a working table is clamped by collectively (simultaneously) acting a plurality of clamp members.

(Problems to be solved by the invention) By the way, a plurality of conventional clamp members as described above may be operated collectively (simultaneously) to clamp a workpiece.
When machining a V-shaped groove, it is necessary to set in advance so that the end surface of the work and the V groove to be machined are parallel to each other, and there is a problem that it takes a lot of time to position the work. Further, if the end face of the work and the V groove to be machined are not parallel to each other and the V groove is machined in the misaligned state, V
There is a problem that the processing accuracy of the groove is lowered.

Therefore, the present invention provides a V-shaped groove processing machine in which a plurality of work clamp devices are divided into groups and the work clamp devices of each group can be opened / closed individually, and a long plate material is not forgotten to be closed. The purpose is to

[Structure of the Invention] (Means for Solving the Problems) The V-shaped groove processing machine of the present invention for solving the above problems is
The long work table (1
1) is provided with a carriage (35) that can be moved toward and away from the lateral direction, and an appropriate number of plate materials (W) placed on the work table (11) are provided at a plurality of locations on the carriage (35). A plurality of work clamp devices (33) to be gripped by the work clamp device (33) are provided, and the work clamp devices (33) are divided into groups and provided with opening / closing operation means capable of opening and closing each group, along the longitudinal direction of the work table (11) And a cutting tool (39) for machining a V-shaped groove is vertically movable in the cutting head (45).

At the start of processing, the open / close conditions for closing all the work clamp groups that overlap the input processing length of the plate (W) are compared with the actually closed work clamp groups, and they match. It is characterized in that a judging means (67B) is provided for judging whether or not the processing is started, and for starting processing if they match, and for judging that processing is not possible if they do not match.

(Operation) In the present invention, a plurality of work clamp devices 33 are divided into groups.
Since the A, 33B and 33C can be individually opened / closed, a plurality of plate materials can be simultaneously processed by one or a plurality of workers.

Further, when V-groove machining is performed on a long material or a plurality of materials, for example, by clamping one end of the long material or a plurality of materials with a group of work clamp devices, the end surface of the work and the V groove to be machined are formed. Can be positioned parallel to each other, and V-groove processing with good processing accuracy can be performed.

Further, at the time of starting the machining of the V-shaped groove, by comparing the work clamp device group that should be operated based on the input machining length of the plate material with the work clamp device group that is actually operating, the total machining length can be calculated. Since the determination means for determining whether or not the predetermined work clamp device is closed is provided, it is possible to prevent the V-shaped groove from being erroneously processed on the plate material in the state where the work clamp device is not closed. The cutting tool will not be damaged or a defective product will not be generated.

(Embodiment) Referring to FIGS. 2 to 4, a groove processing machine 1 according to the present embodiment has a box-shaped lower portion that is relatively elongated in the left-right direction (the front-back direction of the paper in FIG. 4). A frame 3 is provided, and left and right side plates 5 are erected on both left and right sides of the lower frame 3. The upper parts of the left and right side plates 5 are integrally connected by an upper frame 7.

A work table 11 is mounted on the lower frame 3 to support a plate W (not shown in FIGS. 2 to 4) to be processed.
Is attached, 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 extending to a position close to the work table 11 is laid on an upper portion of each bracket 15, and a plate material W is gripped on the guide rail 19 and positioned in the front-back direction (Y direction). A shaft positioning device is supported.

That is, the gearboxes 21 are arranged on the two pedestals in the middle of the bracket 15, and the ball screws 27 are provided between the gearboxes 21 and the front bearings 25.
Is rotatably supported. The gearboxes 21 are fitted with an appropriate coupling mechanism for rotating the ball screws 27 in an interlocking manner. Also, at the rear end of the ball screw 27 on the right side,
29 is fixed, and the pulley 29 is rotatably connected to the servomotor M _Y 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-rear direction. Further, below the carriage 35, a nut member 37 screwed with the ball screw 27 is attached.

Therefore, by driving the servo motor M _Y and rotating the ball screw 27 in an appropriate direction, the carriage 35 can be moved in the front-rear direction. 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 form a V-shaped groove on the upper surface of the plate material W positioned by the Y-axis positioning device, the work table 11
A Z-axis and X-axis positioning device is provided at a position above the Z position so that the slider 41 having the cutting tool 39 can be adjusted in the vertical direction (Z direction) and can be moved in the horizontal direction.

More specifically, a guide rail 43 extending in the left-right direction is attached to the upper frame 7.
A cutting head 45, which supports the slider 41 so as to be vertically movable, is supported by 43. Cutting head
A ball screw 47 parallel to the guide rail 43 is provided between the left and right side plates 5 in order to move the right and left 45. The ball screw 47 is a servo motor M _{X (} not shown).
And a nut member (not shown) provided inside the cutting head 45 are screwed together. Therefore, by driving the servo motor M _X , the nut provided inside the cutting head 45 can be rotated to move the cutting head 45 to any position at any speed.

Further, a servo motor M _Z is connected to an upper end of the slider 41 at an upper end thereof through a gear as appropriate, and an intermediate part of the ball screw is screwed into a bearing member 49 fixed to the cutting head 45. 51 is rotatably supported.
Therefore, by driving the servo motor M _Z , the slider 41 having the cutting tool 39 at the lower end can be moved to an arbitrary height at an arbitrary speed.

In the present embodiment, the cutting tool 39 comprises a plurality (5) of cutting tools 53 and a cutting tool holder 55 that integrally connects the cutting tools 53, and the cutting tool 53 has a V-shaped tip. I am doing it. Each of the above tools 53 is a tool holder
It is attached to the 55 so that it can be freely attached and detached and its position can be adjusted. In this embodiment, when forming the V-shaped groove on the upper surface of the plate material W, the rear side protrudes downward so that the succeeding cutting tool 53 cuts deeper than the preceding cutting tool 53. Therefore, when the plate material W is grooved, the resistance acting on each bite 53 is small. Further, the one-stroke operation of the slider 41 enables the rough cutting to the fine cutting.

In order to firmly fix the plate material W to the work table 11 after the positioning of the plate material W, a plate pressing device 57 is provided below the upper frame 7. Further, the plate pressing device 57 has
A plate thickness detector St (see FIG. 5) that detects this operation and detects the thickness t of the plate W while the plate W is pressed in is attached.

Therefore, by operating the plate pressing device 57 with, for example, a hydraulic cylinder and pressing the arm tip of the device 57 against the upper surface of the plate material W, the plate material 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 of the X-axis from bending due to its own weight, the ball screw 47 is normally supported from the lower side, and when the cutting head 45 passes, the ball screw 47 is retracted to the rear side and cuts with the cutting head 45. Screw support device to avoid interference
A plurality of 59 are provided at appropriate intervals in the left-right direction.

One end of an inverted concave-shaped arm 61 having a horizontal portion higher than the height of the side plate 5 is attached to the side surface of the right side plate 5 of the groove processing machine 1 in such a manner that the arm 61 is rotatable by an allowable angle. At the other end, an operation panel 63 that is rotatable around a vertical axis by an allowable angle is provided. 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, to which the operation panel 63 and each motor are arranged.
Drivers D _X , D _Y , D _Z for driving M _X , M _Y , M _Z , and input / output interfaces 69, 71 are connected. Each motor M _X , M _Y , M
The _Z, the position detector E _X for detecting the operation result, E _Y, E _Z and speed detector _{TG X, TG Y, TG Z} , as well as the alarm lamp ALM is connected.

Operation switches FS1, FS2, FS3 of the foot petal device and the plate thickness sensor St are connected to the input interface 69, and the output interface 71 operates the work clamp device groups 33A, 33B, 33C separately. Solenoid valve S
OL1, SOL2, SOL3 are connected.

In the inside of the NC device 67, a predetermined calculation is performed based on the input processing conditions, and a predetermined drive signal is applied to each servo motor M _X , M _Y , M _Z so as to process a predetermined V-shaped groove. Sending operation unit 67A
Then, the discrimination means 67B for performing the discrimination processing shown in FIG. 6 is built in.

In FIG. 6, in step 601, the processing conditions such as the plate thickness and the length of the V-shaped groove and the processing length, that is, the length of the plate material to be processed are input. In step 602, the clamp closing condition for the processing is set. Ask.

Since the plate material is processed right-justified in FIGS. 2 and 3, this closing condition is a condition that all work clamp groups that overlap the plate length should be closed. Become. That is, the closing condition is SO
L1 only operation, SOL1 and SOL2 operation, or SOL1, SOL2, SOL3
Either one of the two activations is selected. By operating in this way, the work clamp group is clamped while sequentially abutting a long material or a plurality of materials from, for example, one end side, so that the end surface of the plate material W and the V groove to be processed are parallel, and the processing accuracy is good. V groove processing can be performed.

In step 603, the work clamp device that is actually closed, in other words, the solenoid valve that is operating, is detected, and the closing condition is checked.
Processing starts at 604. If they do not match, the process proceeds to step 605, and an alarm is output because processing is not possible.

Therefore, in this example, the determination process of step 603 is performed, and after confirming that the closing condition and the actual condition match, V
Since the V-shaped groove is processed, the plate material not gripped by the work clamp device 33 is prevented from being processed by mistake,
The bite 53 will not be damaged or a defective product will not be generated.

After the above discrimination processing, the NC device 67 determines that the servomotors M _X , M _Y , M _Z
Drive the Y-axis carriage 35, cutting head 45,
The slider 41 can be controlled to any position at any speed. That is, by driving the Y-axis carriage 35, the processing position of the plate material W gripped by the work clamp device 33 can be positioned immediately below the cutting tool 53. Further, by driving the cutting head 45 and the slider 41, it is possible to move the cutting tool 53 in the X-axis direction while controlling the slider 41 to a predetermined height. In addition, the Y-axis carriage 35
It is possible to raise the bite 53 at the same time while moving the.

FIGS. 7 and 8 show examples of processing the V-shaped groove.

FIG. 7 shows that after fixing the plate material W on the work table 11, the cutting tool 53 is moved to the position X ₁ in the X-axis direction, and then the cutting tool 53 is lifted by the circular interpolation of the XZ2 axis in the middle cutting end section AP. This is an example in which the V-shaped groove 75 that has been cut midway is machined.

Fig. 8 shows the middle cutting start section AS after fixing the plate material W
Then, the bite 53 is lowered to the position X ₂ by linear interpolation of the XZ2 axis, then only the X axis is driven, and in the midway cutting end section AP from the position X ₃ , the bite 53 is raised again by the linear interpolation of the XZ2 axis to perform midway cutting. V-shaped groove 75 for start and end of mid-cut
It 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 processing machine 1 of this example,
Cutting can be started in the middle of the plate material W, or can be ended in the middle of the plate material W.

In the example of FIG. 9, when shifting from the control of only the X axis to the interpolation of the XZ2 axis, the cutting speed of the cutting tool 53 is set to the same speed F in all sections.
It is what In other words, it is preferable that the cutting speed (composite speed in biaxial interpolation) with respect to the cutting surface of the plate W be constant at least at the bending point at the start and end of the mid-cut. In this way, if the cutting speed is made constant at the refraction point, the processing accuracy becomes good and each axis can be easily controlled.

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

[Effects of the Invention] As described above, according to the V-shaped groove processing machine of the present invention, since the work clamp device can be opened and closed individually, one or a plurality of workers can operate a long material or a plurality of plate materials. By clamping the work clamp group while sequentially abutting from one end side, the end surface of the plate material and the V groove to be machined become parallel, and the V groove having good machining accuracy can be machined efficiently.

Further, at the time of starting the machining of the V-shaped groove, by comparing the work clamp device which should be operated based on the inputted machining length of the plate material and the work clamp device which is actually operating, a predetermined machining length is determined. Since it is possible to determine whether the work clamp device is operating, the V-shaped groove may be erroneously machined in the plate material or the cutting tool may be damaged when the work clamp device is not closed. Absent.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of the present invention, FIGS. 2 and 3 are plan and front views of a V-shaped groove processing machine according to an embodiment of the present invention, and FIG. 4 is an IV- of FIG. IV cross-sectional side view, FIG. 5 is a block diagram of the control device, FIG. 6 is a control flowchart, FIG. 7 is an explanatory view of an example of processing by the end of intermediate cutting, and FIG. 8 is processing by the start of intermediate cutting and the end of intermediate cutting. FIG. 9 is an explanatory diagram of an example, and FIG. 9 is an explanatory diagram showing a preferable example of linear interpolation. 1 …… Grooving machine 11 …… Work table 33,33A, 33B, 33C …… Work clamp device 35 …… Y-axis carriage 39 …… Cutting tool 53 …… Bite 65 …… Control device 65B …… Discrimination means W… … Plate materials SOL1, SOL2, SOL3 …… Solenoid valves

Claims (2)

[Scope of utility model registration request] 1. A long work table (11) is provided with a carriage (35) which can be moved toward and away from the lateral direction of the work table (11), and the carriage (35) is provided with the work table (11).
A plurality of work clamp devices (33) for gripping an appropriate number of plate materials (W) placed on each of them at a plurality of positions are provided, and the work clamp devices (33) can be divided into groups and opened and closed for each group. A cutting tool (39) is provided which is provided with an opening / closing operation means and which is provided with a cutting head (45) which is moved along the longitudinal direction of the work table (11), and which is used to machine a V-shaped groove in the cutting head (45). A V-shaped groove processing machine, which is provided so that it can be moved up and down. 2. When starting machining, the opening / closing conditions for closing all the work clamp groups that overlap the inputted machining length of the plate material (W) are compared with the work clamp groups that are actually closed. Judge whether or not
2. The V-shaped groove processing machine according to claim 1, further comprising: a discriminating means (67B) for starting machining if they are coincident with each other and determining that machining is not possible if they are not coincident.