JPH0740022U - Grooving equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] By registering the table height correction amount corresponding to the room or table temperature in the NC device, it is possible to perform processing considering table height correction according to the temperature zone during processing, It is to improve the processing accuracy. [Structure] For a work W placed on the processing table 9,
The cutting head 11 for processing a linear groove is provided as a groove processing device 1 that is movable in the X and Z axis directions, depending on the temperature of the processing table 9 or the temperature zone of the room temperature in which the groove processing device 1 is installed. The NC device 57 in which the displacement amount of the processing table 9 is registered is provided, and the correction pattern registered in the NC device 57 is selected according to the actual temperature at the time of processing, and the cutting head 1 is operated according to the correction pattern.
It is characterized in that it is configured to simultaneously control the movement of 1 in the X and Z directions along two axes.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a groove processing device for forming a V-shaped groove or the like on a work, and more specifically to a groove processing device for automatically correcting the height of a processing table depending on a temperature zone during processing.

[0002]

[Prior art]

 Conventionally, after measuring the height of the processing table of the V-cut processing device with a dial cage, the amount of correction of the processing table height due to the change in the room temperature (see Fig. 9) is registered in the NC device. As shown in FIG. 9, the height correction amount of the processing table is obtained by plotting the table height due to the change of the room temperature, that is, the correction amount in the Z axis direction, with respect to the coordinate value of the processing table in the X axis direction. Generally, this numerical value is registered in the NC device, and the processing is performed in consideration of the height of the processing table.

[0003]

[Problems to be solved by the device]

 By the way, in the above-described conventional processing table height correcting means of the V-cut processing apparatus, the processing table is processed horizontally in the X-axis direction, but strictly speaking, there is vertical movement in units of microns. That is, if the cutting head is moved horizontally at a constant Z-axis position regardless of this vertical movement, the depth and width will differ within a single groove, and for example, the bending angle of the bending accuracy in the next process will be changed. Since there are variations, it is necessary to make the groove depth and width constant. The upper and lower waves differ depending on the individual characteristics of each machine, but in both cases the temperature change affects the speed and height of the wave. The temperature changes to 5 ° and 10 ° during the day, not to mention the season, and since the table height is corrected in micron units, it is necessary to consider the influence of temperature and re-measure according to the change. There is.

For this reason, the table correction amount is measured a plurality of times in the morning, where the temperature is relatively low in the daytime, during the daytime, in the evening, and sometimes even in the daytime, and is input again to the NC device. This means that one measurement takes 20 to 30 minutes, so if you perform it 2 to 3 times a day, it will be a waste of more than 1 hour, and there will be a problem that it will be complicated and extra time will be required. It was

In order to improve the above-mentioned problems, an object of the present invention is to register a machining table height correction amount corresponding to the temperature of a room or a machining table in the NC device, thereby performing machining according to a temperature zone at the time of machining. It is an object of the present invention to provide a groove machining apparatus capable of machining in consideration of table height correction and improving machining accuracy.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a cutting head for machining a linear groove in a plate-like work placed on a machining table, which is movable in the left-right direction along the machining table and in the vertical direction. As a groove processing apparatus that can be freely moved to, an NC apparatus that registers in advance each temperature zone of the temperature of the processing table or the room temperature in which the groove processing apparatus is installed and the displacement amount of the processing table is provided. A correction pattern registered in the NC device is selected according to the actual temperature at the time of processing, and the cutting head is controlled to move simultaneously in the X and Z axis directions in accordance with the selected correction pattern. It is characterized by being configured.

In the groove machining apparatus, a sensor for detecting the temperature of the machining table is provided in the vicinity of the machining table, or a sensor for detecting the temperature of the room in which the V-cut machining apparatus is installed is provided. It is desirable to detect the temperature.

[0008]

[Action]

 By adopting the groove processing apparatus of the present invention, the correction pattern, which is the amount of height displacement of the processing table in the X-axis direction, is NC for each temperature zone of the temperature of the processing table or the room temperature in which the groove processing apparatus is installed. It is registered in the device, and a correction pattern is selected according to the temperature detected by the temperature sensor to control the movement of the cutting head in the X and Z axis directions on two axes simultaneously. Therefore, the table height is corrected corresponding to the temperature zone during processing, and the processing accuracy is improved.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In order to facilitate understanding, as an example of groove processing, a V-cut processing apparatus that applies a V-shaped cross-section groove to a work will be described first with respect to the overall configuration thereof.

Referring to FIGS. 6 and 7, the V-cut processing device 1 includes a box-shaped lower frame 3 extending in a relatively long direction in the left-right direction (X-axis direction). Left and right side plates 5 are erected on the respective parts. The upper parts of the left and right side plates 5 are integrally connected by an upper frame 7.

A long processing table 9 is mounted on the lower frame 3 in order to support a plate-shaped work W to be processed.

At the right end of the processing table 9 in FIG. 6, a Z-axis origin setting jig (correction jig) 13 is provided for positioning the origin in the height direction (Z-axis direction) of the cutting head 11. It is provided on the processing table 9 so that it can move toward and away from the cutting head 11. The jig 13 includes a detection unit 15 that detects contact of the cutting head 11 with the cutting tool, and is normally pulled to the side plate 5 side with a limit switch (not shown) provided on the side plate 5 turned on. It is fixed.

Further, a plurality of brackets 17 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 processing table 9 is laid on the upper part of each bracket 17, and the work W is gripped on the guide rail 19 in the front-rear direction (Y-axis direction). A Y-axis positioning device for positioning is provided.

That is, a gear box 21 is provided above each of the two middle brackets of the brackets 17, and a gear box 21 is provided between each of the front and rear bearings 23 corresponding to the gear box 21. Each has a ball screw 25 rotatably supported. Appropriate coupling mechanisms are incorporated in both gearboxes 21 so that both ball screws 25 can rotate together. A pulley 27 is fixed to the rear end of the ball screw 25, and the pulley 27 is rotatably connected to a servomotor M _Y fixed to the bracket 17 via a timing belt 29.

A stretch 33 having a plurality of work clamp devices 31 is movably supported on the guide rail 19 so as to be movable in the front-rear direction. The stretch screw 33 is screwed to the ball screw 25 below the stretch 33. A nut member 35 is attached.

Therefore, by driving the servo motor M _Y and rotating the ball screw 25 in an appropriate direction, the stretch 33 can be moved in the Y-axis direction. In other words, the work W gripped by the work clamp device 31 can be positioned at any position on the Y axis.

In order to machine a V-shaped groove on the upper surface of the work W positioned by the Y-axis positioning device, or to deburr the flange portion of the work, a position above the machining table 9 is set. Further, there is provided a Z-axis and X-axis positioning device that can adjust the position of the Z-axis slider 39 equipped with a cutting tool 37 as a cutting tool in the vertical direction and can move in the horizontal direction.

More specifically, a guide rail 41 extending in the left-right direction is attached to the upper frame 7, and the Z-axis slider 39 is supported on the guide rail 41 in the X-axis direction while being vertically moved. An X-axis slider 43 that moves to is supported. In order to move the X-axis slider 43 in the X-axis direction, a ball screw 45 parallel to the guide rail 41 is provided between the left and right side plates 5. The ball screw 45 is connected to a servo motor M _X (not shown) via an appropriate speed reducing mechanism, and is screwed with a nut member (not shown) provided inside the X-axis slider 43. Therefore, the X-axis slider 43 can be moved to any X-axis position at any speed by driving the servo motor M _X.

An upper end portion of the Z-axis slider 39 is connected to a servo motor M _Z fixed to the slider 39 via an appropriate gear, and an intermediate portion thereof is connected to the X-axis slider 43. A ball screw 49 screwed to the fixed bearing member 47 is rotatably supported. Therefore, by driving the servomotor M _Z , the Z-axis slider 39 having the cutting tool 37 at the lower end can be moved up and down at an arbitrary height and at an arbitrary speed.

As shown in detail in FIG. 8, the cutting head 11 has, in this embodiment, five cutting tools 37V (V cutting tools) and a hail cutting tool 37H for V-shaped machining. The cutting tools 37V and 37H are connected to the Z-axis slider 39 using a cutting tool holder 51. The tip of the V-cutting bit 37V is formed in a V-shape when viewed from the X-axis direction. Each V cutting bit 37V is attached to the bite holder 51 so as to be detachable and positionally adjustable. In this embodiment, the V-cutting bit 37V has a rear side so that when the V-shaped groove is formed on the upper surface of the work W, the V-cutting bit is cut deeper in the subsequent cutting tool than in the preceding cutting tool. It projects down. Therefore, when grooving the work W, the resistance acting on each bit 37V becomes small. In addition, one stroke operation of the Z-axis slider 39 enables rough cutting to precise cutting.

Referring to FIGS. 6 and 7 again, after positioning the work W by the Y-axis positioning device, the work W is firmly fixed to the processing table 9 in the lower part of the upper frame 7. Is provided with a fixed clamp device 53 as a work fixing device. Further, the fixed clamp device 53 is provided with a plate thickness detector (not shown) that detects this operation and detects the thickness t of the work W while the work W is being pressed.

Therefore, the fixed clamp device 53 is operated by, for example, a hydraulic cylinder, and the arm tip portion of the fixed clamp device 53 is pressed against the upper surface of the work W, so that the work W is firmly fixed on the upper surface side of the processing table 9. Can be fixed to. Further, the plate thickness t can be detected while the work W is being pressed.

In order to prevent the ball screw 45 from bending due to its own weight, the ball screw 45 is normally supported from the lower side, and when the slider 39 passes, the ball screw 45 retracts rearward to prevent interference with the slider 39. A proper number of avoiding screw support devices 55 are provided at appropriate intervals in the left-right direction. Reference numeral 57 is an NC device that controls each axis.

With the above configuration, the height position of the Z-axis slider 39 is adjusted with respect to the workpiece W positioned by the Y-axis positioning device and fixed by the fixed clamp device 53, and then the height control of the Z-axis slider 39 is appropriately performed. By moving the X-axis slider 43 in the X-axis direction while performing the above, the V-shaped groove is formed on the work W by the V-cutting bit 37V.

Next, the height correcting means of the processing table 9 which is the main part of the present invention will be described in more detail.

Referring to FIGS. 1 to 4, first, as shown in FIG. 4, a dial cage 59 is attached to a side surface of the cutting head 11 by a magnet Mg or the like, and a detection needle is attached to an upper surface of the processing table 9. The amount of displacement in each temperature zone of the processing table 9 is detected by hitting the tip of 61 and applying a pitch operation to the cutting head 11.

In this embodiment, the pitch of the detection positions X on the processing table 9 is set to 200 mm, for example, and the displacement amount in the Z-axis (vertical) direction with respect to the origin position 0 is measured. As the temperature zone, 0 to 10 degrees, 10 degrees to 20 degrees, 20 degrees to 30 degrees, 30 degrees to 40 degrees, etc. were used as 1 to 4 correction patterns (see FIG. 3). The temperature range described above may be set at 5 degrees, and can be freely changed.

FIG. 2 shows a graph of the table displacement amount in each temperature zone described above.

Then, as shown in FIG. 1, by registering the displacement amount of the processing table 9 in each temperature zone described above in the NC device 57, the operator can confirm the temperature during the actual processing. Then, the correction pattern corresponding to the temperature at that time is selected. When the correction pattern is selected, the cutting head 11 is simultaneously controlled to move in the X and Z axis directions in accordance with the correction pattern, and V-cut processing is performed.

The amount of displacement of the machining table 9 is defined by the deflection of the machining table 9, the deflection of the frames 3 and 7 and the side plate 5, and the deformation of each axis, and the supporting shaft of the cutting head 11 and the surface of the machining table 9. Is the distance. Further, since the processing table 9 also changes over time, it is necessary to take measures such as updating the correction pattern every month or every 20 to 30 hours, and the operator knows the update time by displaying an alarm or the like. Means for updating can be considered.

As described above, the table height can be corrected according to the temperature zone at the time of processing without requiring a complicated and extra time, and the processing accuracy can be improved.

FIG. 5 shows an example of automatically detecting the temperature for implementation. That is, a sensor 63 for detecting the temperature inside the room in which the V-cut processing device 1 is installed, or a sensor 65 for detecting the temperature of the processing table 9 is provided, and the temperature detected by each of the sensors 63, 65 is provided. Is sent to the NC device 57 and a correction pattern corresponding to the temperature is automatically selected. The sensor 65 for detecting the temperature of the processing table 9 is shown by a chain double-dashed line in FIG.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes. For example, the effect is exactly the same for groove processing other than the V-shaped cross section.

[0035]

[Effect of device]

 As can be understood from the above description of the embodiments, according to the present invention, the configuration is as described in the scope of claims for utility model registration, and therefore the room temperature or the processing table in which the groove processing device is installed is set. The table height correction amount corresponding to the temperature is registered in the NC device, the actual machining temperature is input to the NC device, the correction pattern is selected, and the cutting head is controlled to move simultaneously in the X and Z axes. .

Therefore, it is possible to perform the processing in consideration of the correction of the table height according to the temperature zone during the processing, and it is possible to improve the processing accuracy.

[Brief description of drawings]

FIG. 1 is a schematic configuration explanatory view showing an NC device for correcting a displacement amount of a processing table of a V-cut processing device which is a main part of the present invention.

FIG. 2 is a graph showing a displacement amount of the processing table in FIG.

3 is a numerical table showing the amount of displacement at each position of the processing table in each temperature zone in FIG.

FIG. 4 is an explanatory view showing a detector for detecting the displacement of the processing table.

FIG. 5 is a schematic configuration explanatory view showing an NC device that corrects by actually detecting the temperature of the processing table or the room.

FIG. 6 is a front view of a V-cut processing device according to an embodiment of the present invention.

7 is a cross-sectional view taken along the line VII-VII in FIG.

FIG. 8 is an explanatory diagram showing a bite mounting state of the cutting head.

FIG. 9 is a graph showing a height displacement amount of a processing table of a conventional example.

[Explanation of symbols]

 1 V-cut processing device 9 Processing table 11 Cutting head 57 NC device 63 Sensor 65 sensor

Claims (2)

[Scope of utility model registration request] 1. A groove machining apparatus provided with a cutting head for machining a linear groove on a plate-shaped work placed on a machining table so as to be movable in the left-right direction and in the vertical direction along the machining table. In addition, an NC device in which a correction pattern indicating the relationship between the temperature of the processing table or the temperature of the room where the groove processing device is installed and the amount of displacement of the processing table is registered in advance is provided. Corresponding to the actual temperature of the NC device, a correction pattern registered in the NC device is selected, and the cutting head is controlled to move simultaneously in the X and Z axis directions in accordance with the selected correction pattern. A groove processing device characterized by the above. 2. A sensor for detecting the temperature of the processing table is provided in the vicinity of the processing table, or a sensor for detecting the temperature of a room in which the groove processing device is installed is provided. Item 1. The groove processing device according to item 1.