JPH0565282B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method of loading a workpiece in a drilling machine.

``Prior art'' Conventionally, a so-called uniaxial drilling machine with one tool clamps a plate-shaped workpiece to a table on the front side, and a drill that runs in the left-right and front-back directions is mounted on the machine stand behind the table. It is equipped with a unit.
The position of drilling into the workpiece is stored in advance in a control device using a microcomputer. The drill unit is numerically controlled based on set values in a control device, and travels back and forth and left and right on the machine platform to drill rivet holes and the like at predetermined positions on the workpiece.

``Problems to be Solved by the Invention'' However, the conventional drilling machine described above can clamp and drill workpieces of various sizes from the maximum size to the minimum workpiece on a table, but it cannot drill small-sized workpieces. When drilling by clamping, the table surface other than the one on which the workpiece is attached is not utilized in any way and becomes a dead space, resulting in waste.

Therefore, in view of the above circumstances, the present invention assumes a number of origins that serve as a reference for determining the drilling position in the workpiece, and in the case of small-shaped workpieces, each end point of the plurality of workpieces is set at each origin point. Align and clamp the holes, drill each workpiece in sequence, change the setup for the next hole in the order of the drilled workpieces, and for large-shaped workpieces, align the end with one of the above origins. A method for loading a workpiece in a drilling machine that can improve operating efficiency and work efficiency by removing an origin point that gets in the way and a workpiece whose end coincides with the origin point while clamping the workpiece to make a hole. The purpose is to provide.

"Means to be Solved by the Invention" In order to achieve the above object, the present invention includes a work mounting part on which a work is placed and the peripheral edge of the work is clamped by a clamper, and a work mounting part behind the work mounting part. A drilling machine comprising a movable base that is movable in parallel to the longitudinal direction of the work mounting part, and a drill unit that is attached to the movable base and is movable in a direction orthogonal to the moving direction of the movable base,
As a reference point for determining the drilling position in the workpiece, a left-hand origin setting member is placed at a point on the left side of the workpiece attachment part, and a right-hand origin setting member is placed at a point on the right side of the workpiece attachment part. An arbitrary number of intermediate origin setting members are arranged between the origin setting member and the right origin setting member, and the intermediate origin setting members and their intermediate clampers can be retracted downward, and when drilling a small workpiece,
The ends of the plurality of workpieces are aligned with the left origin setting member, the right origin setting member, and each intermediate origin setting member, and the workpieces are clamped to the workpiece mounting section, and when drilling a large workpiece, the The intermediate origin setting member and the intermediate clamper are selectively retracted downward, and the left origin setting member,
The present invention is characterized by a method of loading a workpiece in a drilling machine in which the workpiece is clamped with its end aligned with the right origin setting member or any intermediate origin setting member.

"Embodiment" Hereinafter, one embodiment of the method for loading a workpiece in a drilling machine according to the present invention will be described based on the drawings. First, a drilling machine that implements the workpiece loading method according to the present invention will be described. In FIGS. 1 and 2, 1 is a workpiece mounting portion, and 2 is a machine stand. The workpiece attachment part 1 is made up of a frame 3 made of angle material or the like, and support rods 4 are arranged in parallel on the frame 3 along the rear edge and both side edges of the workpiece attachment part 1 except for the front side. A plurality of hydraulic clampers 5 are fixed to the support rod 4 at appropriate intervals, or are slidably and fixedly attached at appropriate positions. In this case, the means for fixing the hydraulic clamper 5 to the support rod 4 is such that if a set screw screwed into a part of the hydraulic clamper 5 is attached, the tip of the set screw comes into pressure contact with the support rod 4. . Rear support rod 4
An L-shaped left origin setting member 6 and right origin setting member 7 for setting the left origin and right origin are fixedly installed on both sides of the assembly. Between the supporting rods 4 on both sides, a first horizontal rod 8 and a second horizontal rod 9 are arranged at equal intervals. The first horizontal rod 8 and the second horizontal rod 9 are provided on the frame 3 so as to be freely tiltable via a pair of swinging rods 10 and 11 at the front and rear, respectively. That is, each swinging rod 10, 11 is pivotally supported by the frame 3 as shown in FIGS. 3 and 5, and
It has a threaded hole 14 into which a set screw 13 is screwed in an upright state in contact with a receiving member 12 fixedly provided thereon. As shown in FIG.
Even if loosened by 6, the insertion hole 17 of the receiving member 12
The snap spring 15 is adapted to engage with the edge of the insertion hole 17 to prevent it from coming off. 1st
A hydraulic clamper 18 is slidably mounted on the horizontal rod 8 and the second horizontal rod 9. Hydraulic clamper 18
has a set screw 20 on the back plate 19 of the
0, the tip of the set screw 20 comes into pressure contact with the first horizontal rod 8 or the second horizontal rod 9, and the hydraulic clamper 18 is tightened to the first horizontal rod 8 or the second horizontal rod 9 as appropriate. It is designed to be fixed in position.
Further, as shown in FIGS. 2 and 3, each of the swinging rods 10 on the rear side is provided with an L-shaped first intermediate origin setting member 2 for setting each of the intermediate origins.
1a and a second intermediate origin setting member 21b are each fixedly installed. On the other hand, the frame 3 of the workpiece attachment part 1 has two horizontal frames 3a facing in the longitudinal direction of the workpiece attachment part 1, and on each horizontal frame 3a there is a Thus, rails 23 for slidably receiving the pedestals 22 are respectively fixed. As shown in FIGS. 3 to 5, FIG. 10, and FIG. As shown in FIGS. 4 and 5, when the first horizontal rod 8 and the second horizontal rod 9 are tilted,
Notch recess 2 into which the horizontal rod 8 and the second horizontal rod 9 fit
It has 4. As shown in FIGS. 10 and 11, a rotating rail 25 is rotatably supported at an exposed portion of the horizontal frame 3a located on the inner side.
The rotating rail 25 has a length that is approximately 1/2 of the cut length of the rail 23, and is configured to cover the notch recess 24. As shown in FIG. 8, each rail 23 has a guide groove 26 at the lower part of the surface opposite to each other, and a protrusion 27 at the lower part of the pedestal 22 can be freely slid into the guide groove 26. Insert. As shown in FIGS. 7 to 9, the pedestal 22 is formed into a plate shape and is mounted so as to span between the rails 23 by means of a sliding member 28 at the bottom. The sliding member 28 has the projection 27 and is provided with a set screw 29. When the set screw 29 is tightened, the tip of the set screw 29 comes into pressure contact with the side surface of the rail 23, and the pedestal 22 is held in place. It is designed to be fixed to the rail 23. The pedestal 22 has guide grooves 30 on both sides of the upper part thereof, and the manual clamper 31 is attached to the pedestal 22 by slidably engaging the engagement projections 32 of the manual clamper 31 in the guide grooves 30. A receiving seat 33 for receiving the workpiece A is fixedly provided on the upper surface of the receiving stand 22. The number of pedestals 22 installed between the rails 23 can be freely selected depending on conditions such as the size of the workpiece and the position of the holes to be punched. As shown in FIGS. 8 and 9, the manual clamper 31 has a screw rod 35 erected from a base 34 having the engagement protrusion 32, and an insertion hole for a press plate 36 is inserted into the screw rod 35. By inserting the nut 37 and screwing it into the screw rod 35, the pressing plate 36 clamps the workpiece A with the receiving seat 33. The height of the pressing plate 36 can be adjusted so that the lower surface thereof is approximately flush with the upper surface of the workpiece A. Such adjustment is carried out by standing a screw rod 38 on the base 34, and
8 through the insertion hole of the press plate 36, screw the nut 39 onto the screw rod 38, place the edge of the insertion hole of the press plate 36 on the nut 39, and turn the nut 39. This is to move the press plate 36 up and down. Chip receiving boxes 40a and 40b are provided below the workpiece mounting portion 1.
The chip receiving boxes 40a and 40b have rollers 62 as shown in FIGS. 1 and 3, and can be freely pulled out from below the workpiece mounting section 1.
Further, the chip receiving strips 40a and 40b have a double bottom formed by a partition wall 43, with the upper part serving as a receiving tray 41 for receiving chips, and the lower part serving as tanks 42a and 42b for receiving and storing cutting oil. be. The partition wall 43 has a mesh-shaped collection hole 44 . A pump 46 is provided in the tanks 42a and 42b to cause the liquid to be ejected from the nozzle 45 via the electromagnetic valves 63 to 65 again.

As shown in FIG. 2, the machine stand 2 supports a ball screw 48 along its longitudinal direction and can be rotated by a pulse motor 49. A receiving portion of a moving table 50 is screwed into the ball screw 48 . The moving table 50 supports a ball screw 51 in a direction perpendicular to the axial direction of the ball screw 48, and the ball screw 51 is rotated by a pulse motor 52. A receiving portion of a drill unit 53 is screwed into the ball screw 51. As shown in FIG. 1, the drill unit 53 is rotated by a motor 54 and moved up and down by a hydraulic cylinder 55 to drill into the workpiece A.

The hydraulic clampers 5 and 18, the pump 46, the pulse motors 49 and 52, and the drill unit 53
is controlled via a control device 56 equipped with a microcomputer and a power distribution board 57. As described above, the hydraulic clampers 5 and 18 are arranged in four areas of the workpiece mounting part 1, namely, the left side area, two intermediate areas, and the right side area.
As shown in FIG. 4, the mode switching circuit 58
There is a first pattern in which each area is operated independently, a second pattern in which each area is operated separately from the center of the workpiece attachment section 1 on the left side and right side area, and a second pattern in which all the areas are operated separately. A third pattern to be operated simultaneously can be selected.
A selection circuit 59 is connected to the mode switching circuit 58, and the selection circuit 59 can select any area in the first pattern or the second pattern. The selection circuit 59 is connected to a control device 56 that issues drive commands and control operation commands, and a drive circuit 61, so that the operation of the hydraulic clampers 5 and 18 can be controlled by the output of the drive circuit 61. .

In the above configuration, first, let us consider the case where four groups of workpieces are drilled using the left origin setting member 6, the right origin setting member 7, the first intermediate origin setting member 21a, and the second intermediate origin setting member 21b. explain. As shown in FIG. 15, the first horizontal rod 8 and the second horizontal rod 9 are the swing rods 10 and 9, respectively.
11 is erected, and one swinging rod 10 is fixed to the receiving member 12 with a set screw 13 so as to face the workpiece mounting part 1. On the other hand, the cradle 22
A plurality of holes are fixed between the rails 23 with set screws 29 at appropriate intervals so as not to be located at positions where holes should be drilled in the workpiece A. Then, the left origin setting member 6, the left origin setting member 6,
Right side origin setting member 7, first intermediate origin setting member 2
1a and the second intermediate origin setting member 21b for positioning, the peripheral edges of the workpieces A of each group are moved to the hydraulic clampers 5, 18 and the manual clamper 31.
Clamp with. At this time, the vicinity of the end of each origin setting member 6, 7, 21a, 21b side of each workpiece A in each group is supported by a cradle 22a having only a cradle 33a, and is securely clamped by hydraulic clampers 5, 18. It can be so. After the manual clamper 31 is positioned by sliding along the receiving base 22 to match the width of the workpiece A, the workpiece A is pressed against the receiving seat 33 by the pressing plate 36 and clamped. A predetermined number of works A in each group are stacked and clamped as described above. The drill unit 53 is numerically controlled and each origin setting member 6,
The perforation positions are determined and moved based on the L-shaped corners of 7, 21a, and 21b, thereby sequentially perforating predetermined locations. After the drilling work on the workpieces in one group is completed, and while drilling is being performed on the workpieces in the other group, the workpieces A in the group for which the drilling work has been completed are unclamped by the hydraulic clampers 5, 18 and the manual clamper 31. Then, the workpiece to be drilled is mounted, and the hydraulic clampers 5, 18 and the manual clamper 31 are connected again.
Perform setup work for clamping. Thereafter, the above operation is repeated. However, depending on the position of drilling into the workpiece A, there may be cases where the sliding member 28 of the pedestal 22 must be positioned and fixed in the notch recess 24. Rotate the rail 25 to position it on the notch recess 24,
A cradle 22 is attached to the rotation rail 25 on the notched recess 24.
, and fix it with the setscrew 29 as described above. At this time, the sliding member 28 on the front side of the pedestal 22
can be sufficiently fixed by simply placing it slightly over the cut end of the rail 23. Conversely, if it becomes necessary to position and fix the sliding member 28 of the pedestal 22 between the end surface of the rotating rail 25 and the cut end surface of the rail 23, rotate the rotating rail 25 in the opposite direction. The sliding member 28 of the pedestal 22 is positioned on the rotating rail 25 and fixed with a set screw 29.
At this time as well, the sliding member 28 on the front side of the pedestal 22
can be sufficiently fixed by placing it slightly over the cut end surface of the rail 23. Furthermore, when clamping a narrow workpiece A, the rotating rail 25 is positioned above the notch recess 24 as shown by the two-dot chain line in FIG. 3 and FIG. , or by sliding the hydraulic clamper 18 along the second horizontal rod 9, the end surface of the rotating rail 25 and the rail 2
The hydraulic clamper 18 clamps the workpiece A by inserting it between the cut end surface of the workpiece A and the cut end surface of the hydraulic clamper 18. Therefore, the hydraulic clamper 18 can be positioned in accordance with the width of the workpiece A and clamp the workpiece A without coming into contact with the rail 23 and getting in the way.

Next, as shown in FIG. 16, a case will be described in which two groups of long works B are perforated. Since the workpieces B of each group are long, in addition to the hydraulic clampers 18 attached to the first horizontal rod 8 and the second horizontal rod 9, the first intermediate origin setting member 21
a and the second intermediate origin setting member 21b, and the hydraulic clamper 18 etc. become an obstacle when mounting the work B. To solve this, first loosen the set screw 13 and shake it. Motion rod 10,
11 are respectively tilted, and the swinging rods 10 and 11 are fitted into the notched recesses 24. Due to such intrusion,
Hydraulic clamper 18 and intermediate origin setting member 21
a and 2b are stored below the upper surface of the receiving seat 33 of the receiving stand 22. Therefore, the workpiece B is attached to the hydraulic clamper 18 attached to the first horizontal rod 8 or the second horizontal rod 9, and the first intermediate origin setting member 21.
a and the second intermediate origin setting member 21b and get in the way.
Can be installed on. At this time, as shown in Figure 12,
It is possible to cover the notch recess 24 with a rotation rail 25 and fix the pedestal 22 to the rotation rail 25.

Furthermore, as shown in FIG. 17, when attaching a group of large-shaped workpieces C to the workpiece attachment part 1, the first transverse bar 8 and the second transverse bar 9 are inserted into the notched recesses in the same manner as described above. 24, and the hydraulic clamper 18 is stored below the upper surface of the receiving seat 33 of the receiving stand 22, the workpiece C can be clamped to the workpiece mounting portion 1 without getting in the way. At this time, as shown in FIG. 12, it is possible to cover the cutout recess 24 with the rotating rail 25 and fix the pedestal 22 to the rotating rail 25.

The size of the workpieces to be clamped to the workpiece attachment part 1 does not necessarily have to be the same for each group, but the pattern of drilling positions for the workpieces in each group must also be the same. Depending on the size of the shape of the workpiece, only one of the first horizontal rod 8 or the second horizontal rod 9 can be stored downward.
It is also possible to use only the other. For example, it is possible to clamp a small-sized workpiece in the left side area of the four areas that are the largest units in the workpiece mounting section 1, and perform drilling work by clamping a large-sized workpiece using the remaining three areas. It is possible.

Note that the rotating rail 25 can be attached not only to the rear side as in the embodiment described above, but also to a location where the rail 23 on the front side is cut and the horizontal frame 3a is exposed. Also, the above manual clamper 3
A hydraulic clamper can also be used instead of 1.

On the other hand, when drilling a workpiece in the area to the left of the center of the workpiece attachment part 1, cutting oil ejected from the nozzle 45 is collected in the tank 42a on the left side, and conversely, when drilling a hole in the workpiece in the area to the right of the center of the workpiece attachment part 1, the cutting oil ejected from the nozzle 45 is collected in the tank 42a on the left side. When a workpiece is being drilled, cutting oil ejected from the nozzle 45 is collected in the tank 42b on the right side. Therefore, if a hole is drilled only in one area from the center of the workpiece mounting part 1, or if a large number of holes are drilled, one side of the tanks 42a and 42b will be filled with cutting oil and overflow, and the other side will become empty. It is necessary to prevent this. Therefore, the control device 56 controls the pump 46 and the electromagnetic valves 63 to 65.
is controlled so that the cutting oil is concentrated in the tanks 42a and 42.
It is designed to prevent it from being stored in b. That is, when drilling a workpiece in the left side area of the center of the workpiece attachment part 1, the control device 56 operates the pump 46 and the electromagnetic valves 63, 65 of the left tank 42a to pump cutting oil from the left tank 42a. The cutting oil is then supplied to the nozzle 45 via the electromagnetic valves 63 and 65, and the circulation of the cutting oil is repeated thereafter. Further, when drilling a workpiece in the area to the right of the center of the workpiece attachment part 1, the control device 56 operates the pump 46 and the electromagnetic valves 64, 65 of the right tank 42b, so that the right tank 42b
The cutting oil is pumped up from the pump and supplied to the nozzle 45 via the electromagnetic valves 64 and 65, and thereafter the circulation of the cutting oil is repeated.

"Effects of the Invention" As described above, according to the method of loading a workpiece in a drilling machine according to the present invention, a large number of origins are assumed as a reference for determining the drilling position in the workpiece, and when the workpiece is small in shape, In this method, the ends of multiple workpieces are aligned and clamped at each origin, each workpiece is drilled in sequence, and the preparation for the next drilling is changed in the order of the workpieces that have been drilled. is clamped to make a hole with the end aligned with one of the origins, and
The workpiece to be drilled is removed with reference to the origin and the origin that are in the way of other objects, thereby improving operating efficiency and work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a front view of a drilling machine that implements the workpiece loading method according to the present invention, FIG. 2 is a plan view of the drilling machine shown in FIG. 1, and FIG. 3 is a plan view of main parts of a work clamping mechanism with an intermediate origin. Figure 4 is a front view of the main part of Fig. 3, and Fig. 5 is a plan view of the main part of the work clamping mechanism with an intermediate origin with the intermediate origin setting member and hydraulic clamper stored below the workpiece mounting part. figure,
Fig. 6 is a sectional view of the main part of the receiving member showing the structure for fixing the swinging rod when it is upright, Fig. 7 is a plan view of the main part when the workpiece is clamped to the left side area of the workpiece mounting part, and Fig. 8 9 is a side view of the main part when the workpiece is clamped on the pedestal, FIG. 9 is a front view of the main part when the workpiece is clamped on the pedestal, and FIG.
Figure 0 is a front view of the main part showing the state in which the pedestal is fixed to the rotating rail, Figure 11 is a front view of the main part showing how to clamp a narrow workpiece, and Figure 12 is the front view of the main part showing the state in which the cradle is fixed to the rotating rail.
Fig. 13 is a configuration diagram showing the flow of cutting oil, Fig. 14 is a block diagram showing drive control of the hydraulic clamper, Fig. 15 is a plan view of the main part showing how to clamp four groups of workpieces to the workpiece mounting part, Fig. 16 is a plan view of the main part showing how to clamp two groups of workpieces to the workpiece mounting part, and Fig. 17 is a plan view of the main part showing how to clamp two groups of workpieces to the workpiece mounting part. FIG. 3 is a plan view of main parts showing a mode of clamping a workpiece having the largest shape. 1... Work attachment part, 2... Machine base, 3... Frame, 3a... Horizontal frame, 4... Support rod, 5, 18
...Hydraulic clamper, 6...Left side origin setting member, 7...
Right side origin setting member, 8...first horizontal lever, 9...second horizontal lever, 10, 11...swinging lever, 12...receiving member, 13, 20, 29...set screw, 21a...first
intermediate origin setting member, 21b... second intermediate origin setting member, 22, 22a... pedestal, 23... rail,
24... Notch recess, 25... Rotating rail, 31... Manual clamper, 40a, 40b... Chip receiving box, 53
...Drill unit, 56...Control device, 57...Switchboard, A, B, C...Work.

Claims (1)

[Claims] 1. A workpiece mounting section on which a workpiece is placed and clamping the peripheral edge of the workpiece with a clamper; a movable table located behind the workpiece mounting section and movable in parallel to the longitudinal direction of the workpiece mounting section; In a drilling machine consisting of a drill unit that is mounted on a table and is movable in a direction perpendicular to the moving direction of the moving table, the left side of the workpiece mounting part is used as the origin that is used as a reference for determining the drilling position in the workpiece. A left origin setting member is placed at one point, and a right origin setting member is placed at one point on the right side of the workpiece attachment part, and an arbitrary number of intermediate origin setting members are placed between the left origin setting member and the right origin setting member. However, this intermediate origin setting member and its intermediate clamper can be retracted downward, and when drilling small-shaped workpieces, multiple workpieces can be attached to the left origin setting member, right origin setting member, and each intermediate origin setting member. When drilling a large workpiece, the intermediate origin setting member and the intermediate clamper are selectively retracted downward, and the left origin is set. 1. A method of loading a workpiece in a drilling machine, comprising clamping the workpiece by aligning the end with the member, the right origin setting member, or any intermediate origin setting member.