JP2016209934A - Boring device for long material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a boring device for a long material which is a comparatively simple and compact machining device, and can efficiently bore a plurality of holes on a long material.SOLUTION: A boring device for a long material is equipped with: a plurality of drills 5 driven to rotate by a timing belt not shown in Fig. and a gear device 3 which are coupled to a driving motor 2; a plurality of air cylinders vertically moving the drills 5; and a chuck device fixing a pipe material 1. The drills 5 are divided into 3 groups of A, B, and C, and the height position of a tip end of each drill 5 is same in the group, and different in each group. The chuck device is equipped with an end portion chuck device, and a chuck cylinder. The end portion chuck device is coupled to a rotary actuator, and a cylinder is opened to rotate the chuck device and position at an optional rotary angle position.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a drilling device for long material.

  Long materials such as shaped steel and pipe materials used for assembly shelves must be drilled in a straight line at regular intervals in the longitudinal direction.

  In particular, when a plurality of holes are machined at equal intervals in the longitudinal direction of the pipe material, it is difficult to ensure the positional accuracy of the holes in the drilling process by moving the drill or the material. Moreover, although it is necessary to process a through-hole with high precision in the pipe material used for an assembly shelf, the process of the burr | flash which generate | occur | produced was difficult.

  If the above-mentioned processing is performed using a conventional processing device, it is conceivable to use a multi-axis drilling device that can drill a large number of holes described in Patent Document 1, for example.

JP 07-314224 A

  However, it is not considered that the conventional processing machine described in Patent Document 1 is suitable for processing many holes in the pipe material or the like with high accuracy and efficiency. There is a problem that the scale of the processing machine is excessively large, such as having a mechanism for the horizontal movement of the drilling device itself, and cannot be balanced with the processing object and the processing purpose, resulting in excessive use of the processing machine.

  An object of the present invention is to provide a drilling device for a long material that can efficiently drill a plurality of holes in a long material with a relatively simple and compact processing device.

In order to solve the above-mentioned problems, the invention of claim 1 is an apparatus for processing a plurality of holes in a long material, and includes a plurality of drills rotated by a gear device connected to a drive motor, and a plurality of drills. It is equipped with a plurality of cylinders that move the drill up and down and a chuck device that fixes the long material at the processing position. The plurality of drills are divided into a predetermined number of groups, and the height position of the tip of each drill is the group It is the same, and has a different height position for each group.
According to a second aspect of the present invention, the chuck device further includes an end chuck device for fixing an end portion of the long material and a chuck cylinder for fixing a side surface of the long material, and the end chuck device is a rotary actuator. The long material is positioned at an arbitrary rotation angle position by opening the chuck cylinder and rotating the end chuck device.

  According to the long material drilling apparatus of the present invention, there is provided a processing apparatus capable of accurately and efficiently drilling long material at equal intervals.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows embodiment of the drilling apparatus for long materials of this invention, (a) is a top view, (b) is a left view, (c) is a layout drawing of the drill drive gear of a drilling part. It is. It is a front view which shows drill arrangement | positioning of this embodiment. It is a figure which shows the raising / lowering mechanism of the drill of this embodiment, (a) is arrangement | positioning of a drill drive gear, an air cylinder, and an raising / lowering guide, (b) is the whole arrangement | positioning of the same gear, (c) is an arrow at the time of drill lowering View AA, (d) shows an arrow AA when the drill is raised, and (e) shows an arrow BB when the drill is lowered. It is a top view of the chuck apparatus of this embodiment, (a) shows the state of the chuck apparatus open during pipe material carrying in, (b) shows the state of the chuck apparatus closed after pipe material carrying in. It is explanatory drawing for comparing the drive motor load at the time of drilling by the case where all the drill tip heights are arranged, and the case where it groups.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, a long material drilling device 100 according to the present embodiment is a device for processing a plurality of holes 1 a in a pipe material 1, and is not shown connected to a drive motor 2. A plurality of drills 5 that are rotationally driven by the timing belt and gear device 3, a plurality of air cylinders 6 that move the plurality of drills 5 up and down, and a chuck device 7 that fixes the pipe material 1 at the processing position 1 b are provided. The plurality of drills 5 are divided into three groups, and the height positions of the tips of the respective drills 5 are the same within the group and are different in height positions for each group.
The chuck device 7 further includes an end chuck device 7a for fixing the end portion of the pipe material 1 and a chuck cylinder 7b for fixing the side surface of the pipe material 1. The end chuck device 7a is connected to a rotary actuator (not shown). The pipe material 1 can be positioned at an arbitrary rotational angle position by opening the chuck cylinder 7b and rotating the end chuck device 7a.

  As shown in FIG. 1, in the direction perpendicular to the direction in which the pipe material 1 is carried in and out from the transport unit 9 to the drilling unit 10, a transport device for the pipe material 1 before drilling and after drilling is disposed. . In other words, the supply section 8 for the pipe material 1 before drilling is disposed on the entry side of the transport section 9, and the unloading section 11 for the pipe material 1 after drilling is disposed on the exit side of the transport section 9. Further, on the exit side of the carry-out part 11, a cooling part 12 of the pipe material 1 that has become high temperature due to heat generated by drilling, a take-out device 13 from the cooling part 12, and a discharge part 14 are arranged.

Hereinafter, each device will be described in more detail.
As shown in FIGS. 3A and 3B, the gears 3a at both ends of the drill base 6a are rotationally driven by a timing pulley and a timing belt (not shown) connected to the drive motor 2, and this rotational power is transmitted to each intermediate gear. It is transmitted to each gear 3a connected to each drill 5 through 3b. Thereby, all the drills 5 rotate in the same rotation direction.

  As shown in FIGS. 3 (a) to 3 (e), a total of eight air cylinders 6 are connected to the drill base 6a, four on each side, and the drill base 6a is connected to the guide 6b by these air cylinders 6. Go up and down along. 3C shows the positional relationship between the guide 6b and the drill 5 when the drill is lowered, FIG. 3D shows the positional relationship between the guide 6b and the drill 5 when the drill is raised, and FIG. The positional relationship between the air cylinder 6 and the drill 5 when lowered is shown.

  As shown in FIG. 2, each drill 5 is disposed at a different height between adjacent drills 5, and in this embodiment, each drill 5 is shifted by 3 mm in height A, B , C are divided into three groups. That is, with reference to the drill 5 of group A, the drill 5 of group B is disposed at a position where the drill tip height is 3 mm higher than the drill tip height of the drill 5 of group A, and the drill 5 of group C Is disposed at a position 3 mm higher than the drill tip height of the drill 5 of the B group. The drills 5 of each group A, B, and C are arranged in the order of ABC as shown in FIG. 2, and are arranged so that this arrangement is repeated.

  Thus, by arranging the drills belonging to each ABC group in order, the load in the pipe longitudinal direction can be averaged, and the drive motor load during drilling is shown in FIG. Compared with the case where the height position is constant, it can be greatly reduced. As a result, the drive motor can be reduced in size, and the load in processing operations of each apparatus is reduced, leading to a reduction in failure. The height can be adjusted on the chuck side where the drill 5 is attached, so that the drill 5 having the same length can be used.

  As a drilling procedure, the air cylinder 6 is lowered, and first, 12 holes are drilled by the group 5 drill 5. Further, the air cylinder 6 is lowered and 12 holes are drilled by the group 5 drill 5. At this time, the drill 5 of the A group penetrates the pipe material, and the drive motor load is only the load of the drill of the B group. Further, when the air cylinder 6 is lowered and 12 holes are drilled by the C group drill 5, the B group drill 5 penetrates the pipe material, and the load of the drive motor 2 is only the load of the C group drill. It is. That is, when the load of the drive motor 2 is represented in a graph, it becomes like a curve P in FIG. 5, and the maximum load is IP. This is a significant load reduction compared to the maximum load IQ of the curve Q indicating the drive motor load when all the drills 5 are aligned at the tip height and 38 drills 5 are drilled at a time. Recognize.

  As a result, the maximum torque of the drive motor can be reduced, and a smaller drive motor can be employed. In addition, even when the same drive motor is used, an effect such as a lower lock rate can be considered. The above is a consideration when the pipe material is thin and the drill penetrates for each group, but even in the case of thick pipes, the tendency to reduce the drive motor load by the grouping is considered to be unchanged.

  In the transport unit 9 shown in FIG. 1, in this embodiment, the pipe material 1 is manually carried into the processing position 1 b and, after drilling, is transported from the processing position 1 b to the transport unit 9. A roller-driven transport device may be disposed in the transport unit 9. As shown in FIG. 4, when the pipe material 1 is carried into the machining position 1b, the chuck cylinder 7b is open, and after the pipe material 1 is completely loaded, the end chuck device 7a is closed and the pipe material 1 is removed. The end is fixed, the chuck cylinder 7b is closed, the pipe material 1 is fixed, and drilling is performed by the drill 5. After drilling, the end chuck device 7a and the chuck cylinder 7b are opened, and the pipe material 1 is unloaded.

When further drilling holes on the back side of the drilled pipe material 1, the chuck cylinder 7 b is opened and the pipe material 1 is chucked by the end chuck device 7 a and rotated 180 ° around its central axis, and then the chuck The cylinder 7b is closed and drilling is performed again. The end chuck device 7a is connected to a rotary encoder (not shown) and can rotate the pipe member 1 by 180 °. In this way, by drilling holes on the front and back of the pipe material 1 from the surface side, when the hole is drilled through the pipe material 1 from one surface, generation of burrs projecting to the surface side penetrated Can be prevented.
Note that the rotation angle is not limited to 180 °, and can be set freely. Therefore, by adjusting the rotation setting angle of the end chuck device 7a by a rotary encoder, if necessary, equidistant holes can be formed in the longitudinal direction of the pipe material. It is possible to process with a central angle of the two.

1 Pipe material 1a Hole 1b Processing position
2 drive motor 3 gear device 3a gear 3b intermediate gear 4a timing pulley 5 drill 6 air cylinder 6a drill mount 6b guide 7 chuck device 7a end chuck device 7b chuck cylinder 8 supply unit 9 transport unit 10 drilling unit 11 unloading unit 12 Cooling unit 13 Extraction device 14 Discharge unit 100 Long material drilling device

Claims (2)

An apparatus for machining a plurality of holes in a long material, the apparatus comprising a plurality of drills rotated by a rotation transmission device coupled to a motor;
A plurality of cylinders for vertically moving the plurality of drills;
A chuck device for fixing the long material at the processing position;
With
The plurality of drills are divided into a predetermined number of groups, and the height position of the tip of each drill is the same within the group, and the height position is different for each group.
This is a drilling device for long materials. The chuck device includes an end chuck device for fixing an end portion of the long material, and a chuck cylinder for fixing a side surface of the long material, and the end chuck device is connected to a rotary actuator. 2. The long material hole according to claim 1, wherein the long material is positioned at an arbitrary rotation angle position by opening the chuck cylinder and rotating the end chuck device. Dawn device.

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