JP4318067B2 - Plate processing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a plate material processing machine provided with a drilling portion that drills holes in a plate material by punching or the like, and a tap processing portion that performs tap processing on the drilled holes.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, various punch press machines have been proposed in which a tapped portion is provided so that a tapped hole can be tapped. As an example of this, a spindle spindle for tapping is provided downward on the side of the punch frame, and a plurality of tap tools that can be interchangeably attached to the spindle spindle can be attached to and detached from a turret that can be swung around a vertical axis. There is something held (Patent stand 2551292).
However, since the proposed example has a configuration in which the turret tapping tool is attached to and detached from the spindle spindle, it takes time to select the tool, and the machining efficiency is not sufficient.
[0003]
As another proposed example, there is a turret base that can move back and forth on the side of a punch frame, and a turret equipped with a plurality of tap tools is installed on the turret base so as to be pivotable about a horizontal axis. The turret is made parallel to the side surface of the punch frame (for example, Japanese Utility Model Laid-Open No. 5-63736).
In this example, the turret is parallel to the side surface of the punch frame, but the turret swivel drive source, the lift drive source, and the tapping tool rotational drive source are located between the turret and the punch frame. Will be placed. It is difficult to arrange these three drive sources side by side on the side of the frame for convenience of motion transmission, and some of them are arranged in the axial direction of the turret. Therefore, the turret is separated from the side surface of the punch frame. Further, since the turret base is provided, the turret is further away from the side surface of the punch frame. For this reason, the distance between the punching position and the tapping position is increased. As described above, when the distance between the punching position and the tapping position is increased, the distance to move the plate material so that the hole opened by the punching process after the punching process is at the tapping position is increased, and the positioning error is accordingly increased. It tends to occur. When the positioning error increases, the processing accuracy decreases and the processing quality deteriorates. In sheet material feeding, thermal expansion of the frame or ball screw or the like causes an error, and temperature correction is performed. However, correction is difficult when positioning at two different processing points.
[0004]
An object of the present invention is to provide a plate material processing machine that can shorten the distance between the drilling position and the tapping position, improve the accuracy of tapping, and can efficiently perform tapping.
[0005]
[Means for Solving the Problems]
The plate material processing machine according to the present invention includes a drilling portion that makes a hole in the plate material, and a tap processing portion that performs tapping on the drilled hole. This tapping part has a turret that can be fitted with a plurality of tapping tools and can turn around a horizontal turning center. The turret is disposed in the vicinity of the frame elevation surface so that the turning center is inclined in a horizontal plane with respect to the elevation surface on the outer periphery of the frame of the drilling portion. In addition, a drive mechanism is provided for rotating the tap tool that faces directly below the turret.
According to this configuration, the turret that turns around the horizontal turning center by mounting the tap tool is arranged so that the turning center is inclined in the horizontal plane with respect to the vertical surface of the outer periphery of the frame. The distance to the tap machining position directly below can be made as short as possible. Therefore, the processing accuracy of tapping can be improved accordingly. In addition, since the drive mechanism that rotates the tap tool facing directly below the turret is provided, it is not necessary to attach or detach the tap tool when selecting the tap tool held by the turret, and the machining can be performed efficiently.
[0006]
In the above configuration, the drive mechanism of the tapping portion may be arranged in a space where the planar shape formed between the turret and the standing surface of the frame behind the turret is a triangular shape. Specifically, the triangular space is a right-angled triangular space in which one of the two sides sandwiching a right angle is the back surface of the turret. In this way, by arranging the drive mechanism of the tapping part in the triangular space between the turret and the frame, this drive mechanism can be arranged efficiently in plan view, and the distance from the drilling position to the tapping position Can be further shortened.
[0007]
Specifically, in the drive mechanism of the tapping portion, each drive source is arranged as follows. The drive mechanism for the tapping portion has a lift drive source for raising and lowering the turret, an index turning drive source for turning the turret, and a tool rotation drive source for rotating the tap tool. Of these three drive sources, an index turning drive source and a tool rotation drive source are arranged side by side along the rear surface of the turret. The elevating drive source is disposed in a space between the index turning drive source and the tool rotation drive source and the vertical surface of the frame. In the case of this configuration, the drive mechanism of the tapping portion can be made compact, and can be arranged more efficiently in space, and the entire structure can be made clean.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. 1A and 1B are a plan view and a side view showing a schematic configuration of the plate material processing machine. In this plate material processing machine 1, a tapping part 3 is provided in a processing machine main body 2 that performs drilling. The processing machine main body 2 includes a frame 4 having a drilling unit 6 that performs drilling, and a plate material moving mechanism 9 that feeds the plate material W back and forth and right and left on the table 8. The tap processing unit 3 includes a tap device installed on the side surface of the frame 4. The frame 4 includes an upper frame portion 4A, a lower frame portion 4B, and a column portion 4C, and the side surface shape is formed in a C shape, and each of the frame portions 4A to 4C has a box shape.
The processing machine body 2 is a punch press machine, and punching turrets 5A and 5B are arranged in the space between the upper and lower frame portions 4A and 4B of the frame 4. The turrets 5A and 5B are rotatably supported by the upper and lower frame portions 4A and 4B, and are indexed and rotated in synchronization with each other by a turret driving device (not shown) installed on the frame 4. The upper turret 5A is provided with a plurality of punch dies (not shown) on the circumference, and the lower turret 5B is provided with a plurality of die dies (not shown) corresponding to the punch dies on the circumference. Individually installed.
[0009]
The drilling section 6 drives the ram 6a that can be moved up and down at the drilling position P1. The punch driving source 7 and a transmission mechanism that transmits the drive of the punch driving source 7 to the ram. It consists of. The ram 6a is a member that drives the punch die that is indexed to the drilling position P1 of the turret 5A to move up and down. The punch drive source 7 is composed of, for example, a servo motor, and the transmission mechanism is constituted by a conversion mechanism that converts a rotational motion into a linear reciprocating motion in the vertical direction.
[0010]
The plate material moving mechanism 9 is a means for positioning the arbitrary processed portion of the plate material W at the drilling processing position P 1 by moving the plate material W on the table 8, and is provided at the front portion of the frame 4. The table 8 includes a fixed table 8a fixed on the bed 10 and a movable table 8b. The movable table 8b is arranged on both the left and right sides of the fixed table 8a. The movable table 8b is driven back and forth (Y direction) on the rail 12 of the bed 10 together with the carriage 11 of the plate material moving mechanism 9. A cross slide 14 having a work holder 13 is installed on the carriage 11 so as to be able to advance and retreat in the left-right direction (X direction), and the plate material W gripped by the work holder 13 is perforated by the movement of the carriage 11 and the cross slide 14. It is sent in the X and Y directions with respect to the processing position P1.
[0011]
The tapping part 3 is a means for tapping the hole made in the plate material W by the perforating part 6, and is installed on the side of the frame 4 as shown in a plan view in FIG. . The tapping position P2 is a position away from the drilling position P1 in the left-right direction (X-axis direction) and the same position in the front-rear direction (Y-axis direction). The tap processing unit 3 includes a turret 15 that can be mounted with a plurality of tap tools 16 and can be turned around a horizontal turning center C. The turret 15 is disposed in the vicinity of the side surface 4 a of the frame 4 such that the turning center C is inclined forward in the horizontal plane with respect to the side surface 4 a that is the elevation surface of the frame 4.
[0012]
The drive mechanism 17 of the tapping portion 3 is disposed in a space S (range indicated by parallel oblique lines) in which the planar shape formed between the turret 15 and the side surface 4 a of the frame 4 is behind the turret 15. . More specifically, the space S is a right-angled triangular space in which one of the two sides sandwiching the right angle R is the back surface of the turret 15, and more specifically, in this embodiment, the front side along the frame side surface 4a. It has a flat shape close to a trapezoidal shape with the corners of.
[0013]
The drive mechanism 17 includes a lift drive source 18 that moves the turret 15 up and down, an index turning drive source 19 that turns the turret 15, and a tool rotation drive source 20 that rotates the tap tool 16. Of these three drive sources, the index turning drive source 19 and the tool rotation drive source 20 are arranged side by side along the back surface of the turret 15. The elevating drive source 18 is disposed in a space between the arrangement of the index turning drive source 19 and the tool rotation drive source 20 and the side surface 4 a of the frame 4. In this example, behind the turret 15, with respect to the turning center C, the index turning drive source 19 is arranged so as to be located farther than the frame side surface 4a and the tool rotation drive source 20 is located closer. ing. The raising / lowering drive source 18 is disposed behind the turret of the index turning drive source 19.
Explaining with reference to the side surface 4a of the frame 4, the elevating drive source 18 and the tool rotation drive source 20 are arranged back and forth along the side surface 4a, and the drive sources 18 and 20 are arranged so as to be stacked in a stack. An exit turning drive source 19 is arranged.
The arrangement of the index turning drive source 19 and the tool rotation drive source 20 may be reversed.
[0014]
The raising / lowering drive source 18 raises / lowers the turret 15 together with the elevator table 23. The turret 15 is rotatably installed on the lifting platform 23, and the lifting platform 23 is installed on a tapping portion base 50 provided on the side surface 4a of the frame 4 so as to be movable up and down via a lifting guide 25 (FIG. 6). FIG. 7). The elevating guide 25 is composed of a plurality of parallel vertical rails 25 a provided on the tapped portion base 50 and linear motion bearings 25 b meshing with these vertical rails 25 a. It is provided on the back. As shown in FIG. 2, the guide surface composed of the plurality of vertical rails 25 a of the elevating guide 25 is a vertical surface parallel to the back surface of the turret 15, and is therefore inclined with respect to the side surface 4 a of the frame 4. Yes.
The raising / lowering drive source 18 is installed in the tap process part base 50, consists of a servomotor, and raises / lowers the raising / lowering base 23 via the feed screw mechanism 21 (FIG. 7, FIG. 8). The feed screw mechanism 21 includes a ball screw 21 a provided on the tapping portion base 50 and a ball nut 21 b that is screwed to the ball screw 21 a and attached to the lifting platform 23.
Specifically, the ball screw 21 a of the ball screw mechanism 21 and the vertical rail 25 a of the lifting guide 25 are installed on the support plate 24 of the tapping portion base 50.
[0015]
As shown in FIG. 9, the elevator 23 is equipped with an index turning drive source 19 and a tool rotation drive source 20 in the drive mechanism 17, and a box incorporating a mechanism for transmitting the drive of these drive sources 19, 20. It is formed in a shape. The linear motion bearing 25b (FIG. 7) and the ball nut 21b are provided on the back surface of the back plate portion 23a of the box-shaped lifting platform 23.
In FIG. 9, the index turning drive source 19 is constituted by a motor, and rotates the turret 15 via the index mechanism 36. The indexing mechanism 36 includes a cam mechanism, and includes a cam 37 that is rotatably supported by the lifting platform 23 and a plurality of cam followers 38 provided on the turret shaft 15a. The turret shaft 15 a is a shaft having the turret 15 attached to the tip, and is rotatably supported by the lifting platform 23. The cam 37 is a continuous cam and rotates the turret 15 by a rotation angle corresponding to the arrangement pitch of the cam followers 38 of the turret shaft 15a by one rotation. The motor shaft center of the index turning drive source 19 and the rotation center of the cam 37 are both in the vertical direction.
[0016]
The tool rotation drive source 20 includes a motor, and transmits the rotation to the tap tool 16 via the transmission mechanism 39. The transmission mechanism 39 is a mechanism that transmits the rotation to the tap tool 16 that is indexed at the tap machining position P <b> 2 of the turret 15, and includes a clutch 41. The tapping position P2 is a rotational position that faces directly below the turret 15.
[0017]
The turret 15 has spindle spindles 46 at a plurality of locations in the circumferential direction, and the tap tool 16 can be attached to each spindle spindle 46. The plurality of spindle spindles 46 are arranged radially. The clutch 41 is engaged with the spindle spindle 46 indexed to the tap machining position P2 by the rotation of the turret 15 so as to be able to transmit the rotation. To the input side member of the clutch 41, the rotation is constantly transmitted from the tool rotation drive source 20 via a transmission member 42 such as a timing belt. An on / off mechanism 47 for turning on / off the clutch 41 is linked to the indexing mechanism 36 of the turret 15. That is, the on / off mechanism 47 is configured by the groove cam 47a provided integrally with the cam 37 of the index mechanism 36 and the rotation lever 47c having the cam follower 47b engaged with the groove cam 47a. The motor axis of the tool rotation drive source 20 is in the vertical direction.
In addition, between the turret 15 and the lift 23, a coupling 48 such as a Karbic coupling that holds the index angle after the index of the rotational position of the turret 15 is provided.
[0018]
As shown in FIG. 8, the tapping portion base 50 is provided with a clearance allowance mechanism 51 that elastically allows the upward movement of the lifting platform 23. The escape allowance mechanism 51 includes an elastic body (not shown) and a movable side base that urges the movable side base 50b downward by moving the movable side base 50b on the fixed side base 50a so that the movable side base 50b can be moved up and down by a guide 52. A stopper (not shown) for restricting the lowest position of the base 50b is provided. The fixed side base 50a is fixed to the side surface 4a of the frame 4, and the vertical drive source 18 and the vertical guide 25 are provided on the movable side base 50b. Therefore, the support plate 24 on which the lifting guide 25 and the ball screw mechanism 21 are installed is fixed to the movable side base 50b. The escape guide 52 includes a vertical rail 52a and a linear motion bearing 52b that meshes with the vertical rail 52a.
In this way, by providing the escape allowance mechanism 51, when an unreasonable load is applied, for example, when tapping is performed while the elevator drive source 20 is lowered, the escape operation can be performed upward together with the elevator drive source 20. The breakage of the tap tool 16 is prevented.
[0019]
According to this plate material processing machine, the plate material W on the table 8 is gripped by the work holder 13, positioned front and rear and left and right by the plate material moving mechanism 9, and is punched by the punching processing unit 6. In the case of tapping, after drilling the pilot hole in the drilling section 6, the plate material W is moved by the plate material moving mechanism 9 so that the plate material W is held by the whirl holder 13 so that the pilot hole is at the tap processing position P2. Then, the hole is tapped by the tapping part 3.
[0020]
In this case, since the turret 15 that rotates around the horizontal turning center C with the tap tool 16 attached is arranged so that the turning center C is inclined in the horizontal plane with respect to the side surface 4a of the frame 4, the drilling position The distance L (FIG. 2) from P2 to the tap machining position P1 directly below the turret 15 can be made as short as possible. Therefore, there is little error during the movement of the distance L, and the tapping accuracy can be improved. Further, since the drive mechanism 17 for rotating the tap tool 15 facing directly below the turret 15 is provided, that is, the turret 15 has a plurality of spindle spindles 46, and the drive mechanism 17 rotates to the spindle spindle 46 facing directly below. Since the transmission is performed, it is not necessary to attach or detach the tap tool 15 when selecting the tap tool 15 held by the turret 15, and the machining can be performed efficiently.
[0021]
The drive mechanism 17 of the tapping portion 3 is arranged in a space S in which the planar shape formed between the turret 15 and the side surface 4a of the frame 4 behind the turret 15 is a triangular shape. It can arrange | position efficiently and can further shorten the distance L from the drilling position P1 to the tapping position P2. Specifically, since the indexing and turning drive source 19 and the tool rotation drive source 20 are arranged side by side along the rear surface of the turret 15, the elevating drive source 18 is arranged between the arrangement and the frame side surface 4a. The drive mechanism 17 of the processing unit 3 can be made compact and can be arranged more efficiently in space, and the entire structure can be made clean.
[0022]
【The invention's effect】
The plate material processing machine of the present invention includes a drilling portion for making a hole in the plate material, and a tap processing portion for performing a tap processing on the drilled hole, and the tap processing portion can be equipped with a plurality of tap tools. The turret has a turret capable of turning around a horizontal turning center, and the turret is arranged so that the turning center is inclined in a horizontal plane with respect to a vertical outer peripheral surface of the frame of the drilled portion. Is provided with a drive mechanism that rotates the tap tool that faces directly below the turret, so that the distance between the drilling position and the tapping position can be shortened and the accuracy of tapping can be improved. And tapping can be performed efficiently.
When the drive mechanism of the tapped portion is arranged in a space where the planar shape formed between the turret and the vertical surface of the frame behind the turret is a triangular shape, the drive mechanism is spatially efficient in plan view. It can be arranged well, and the distance from the drilling position to the tapping position can be further shortened.
The drive mechanism of the tapping part has a lifting drive source for raising and lowering the turret, an index turning drive source for turning the turret, and a tool rotation drive source for rotating the tap tool, and among these three drive sources The index swivel drive source and the tool rotation drive source are arranged side by side along the rear surface of the turret, and the elevating drive source is arranged between the index swivel drive source and the tool rotation drive source and the frame. When arranged in the space between the vertical surfaces, the drive mechanism of the tapped portion can be made compact, and can be arranged more efficiently in space, and the entire structure can be made cleaner.
[Brief description of the drawings]
FIG. 1A is a plan view of a plate material processing machine according to an embodiment of the present invention, and FIG. 1B is a side view of the plate material processing machine.
FIG. 2 is a plan view of a tapping part in the plate material processing machine.
FIG. 3 is a schematic left side view of the tapping portion.
FIG. 4 is a schematic front view of the tapping portion.
FIG. 5 is a left side view showing a turret of the tapping portion.
FIG. 6 is an enlarged plan view of the tapping portion.
FIG. 7 is a front view of a turret raising / lowering mechanism in the tapping portion.
FIG. 8 is a right side view of a turret raising / lowering mechanism in the tapping portion.
FIG. 9 is a cutaway perspective view of a turret and a lifting platform in the tapping portion.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 3 ... Tap process part 6 ... Drilling process part 15 ... Turret 16 ... Tap tool 17 ... Drive mechanism 18 ... Elevating drive source 19 ... Indexing turning drive source 20 ... Tool rotation drive source 46 ... Spindle spindle C ... Turning center P1 ... Drilling position P2 ... Tapping position S ... Triangular space W ... Plate material

Claims (3)

Equipped with a drilling part that drills holes in the plate material and a tapping part that taps the drilled holes. This tapping part can be mounted with multiple tap tools and swivels around a horizontal swivel center. The turret is arranged in the vicinity of the frame elevation so that the pivot center is inclined in a horizontal plane with respect to the elevation of the outer periphery of the frame of the drilled portion, A plate material processing machine equipped with a drive mechanism that rotates a tap tool that faces directly below. The plate material processing machine according to claim 1, wherein the drive mechanism of the tapping portion is arranged in a space where the planar shape formed between the turret and the vertical surface of the frame is a triangular shape behind the turret. The drive mechanism of the tapping part has a lifting drive source for raising and lowering the turret, an index turning drive source for turning the turret, and a tool rotation drive source for rotating the tap tool, and among these three drive sources The index swivel drive source and the tool rotation drive source are arranged side by side along the rear surface of the turret, and the elevating drive source is arranged between the index swivel drive source and the tool rotation drive source and the frame. The board | plate material processing machine of Claim 2 arrange | positioned in the space between elevations.

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