JPS635831A - Die rotation device in turret punch press machine - Google Patents

Abstract

PURPOSE:To realize a good clutch connection and to enable a good piercing work by providing the air nozzle injecting an air toward the engagement end of a clutch and making the state of a work chips, etc., not sticking to the clutch engaging end by an injecting air prior to the clutch connection. CONSTITUTION:When turrets 3, 4 are rotated and the necessary punch tool 5 and die tool 6 are reached to the ram 9 position, i.e., the punching position, engaging pins 46, 67 are projected from each rotary member 14, 15 and inserted into the wedge-shaped grooves 47, 68 formed on tool holders 7, 8 and the rotary member 14 and tool holder 7, a rotary member 15 and tool holder 8 are linked. A valve 103 is switched prior to the projection of the engaging pins 46, 67 and a compressed air is injected from air nozzles 101, 104 toward the pin 67, 46 head parts. With this injecting air, the work chips etc. invading the pin 67, 46 head parts are removed, so the clutch connection can be performed in a good state.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a rotating device for a die in a turret punch press machine.

[Conventional technology]

Punch on turret in turret punch press machine,
As a device for rotating a mold such as a die, for example, JP-A No. 5
Devices such as those disclosed in No. 8-58333 are known, but in these devices, a dog clutch is provided to transmit drive from the fixed frame side to the rotating mold on the moving turret. There is.

[Problem that the invention seeks to solve]

Therefore, it is an essential condition for the synchronization of the rotational phases of the punch tool and the die tool that the above-mentioned dog clutch is perfectly engaged. A large amount of machining debris is generated around the punch, and furthermore, due to the influence of punch vibration, the machining debris may inadvertently enter areas that may interfere with the above-mentioned engagement, resulting in poor engagement.

[Means for solving problems]

Therefore, this invention eliminates the above-mentioned problems, and in order to always achieve a good latch connection and a good hole punching operation, in the turret punch press machine as described above, the " The proposed method is to provide an air nozzle that blows out air.

〔Example〕

Examples will be described below based on the drawings.

In Figure 1, (1) and (2) are the upper and lower frames of the main body, respectively, and the upper turret (3) is attached to the upper frame (1).
is rotatably supported, and a lower turret (4) is also rotatably supported on the lower frame (2). These turrets (3) and (4) are rotated synchronously by a known drive mechanism (not shown), and the upper turret (3) is equipped with a punch tool (5), and the lower turret (4) is equipped with a punch tool (5). A tool (6) is supported via tool holders (7) and (8), each of which will be explained in more detail below.

(9) is a ram provided vertically movably through the upper frame (1), (11) is a pitman connected to the ram (9), and a crankshaft (12) connected to the upper part of the pitman (11). When the ram (9) is rotationally driven, the ram (9) is driven up and down, and the C-shaped engagement groove (1) formed at the bottom of the ram (9)
Insert the knob-shaped flange part (5a) at the top of the punch tool (5).
) is inserted, the punch tool (5) moves up and down to perform punching.

The engagement groove (13) at the bottom of the ram (9) is connected to the turret (3).
Extending in the circumferential direction (direction penetrating the page of Figure 2),
When the ram (9) is stationary and the turret (8) rotates, the flange portion (5a) of the punch tool (5) freely moves back and forth in the engagement groove (13), but the turret (3) ) is stationary and when the ram (9) moves up and down, the flange (5a) of the punch tool (5) engages with the inward pawl of the engagement groove (13), and the ram (9) The punch tool (5) moves up and down as a body.

The tool holders (7) and (8) of the tools are rotatable relative to the turrets (3) and (4), respectively.

In this embodiment, the ram '9) is rotatably centered around the vertical movement axis (punching axis) (P) and is provided in the upper and lower frames (1) and (2). The second rotating member (14) (45 months ζ) is driven to rotate by being directly connected with the clutch.

In addition, the upper and lower frames (1) (2) k rotating member (14
) (15) is inputted to the gear portion (14) formed on the outer periphery of each rotating member (14) (15), as shown in the first diagram.
a) Worm gear (16) (17) meshing with (15a)
and upper and lower transmission shafts (24) connected to the worm gear shafts (18, 19) via toothed pulleys (21, 22) and a toothed belt (23). 26) (27) and toothed belt (28)
Drive input is performed by connecting the servo motor (29) via the transmission shaft (29).
4) By connecting the (25) through the toothed pulleys (81) and (32) and the toothed belt (33), the servo motor (29) can be installed only on the negative transmission shaft (25) side. The upper and lower transmission shafts (24) (25)
Although the rotational speeds of the two shafts are necessarily matched, servo motors may be connected to the upper and lower transmission shafts (24) and (25) individually.

Further, the origin of the rotation speed of the servo motor (29) in this embodiment is detected by a dog (not shown) provided on the tool holder (7) of the punch tool (5) by a proximity switch (not shown) on the upper frame (1). It is designed to be set when the tool holder (8) on the guide side is used as a reference, or if the servo motors are installed separately for the upper and lower parts as described above, the setting for each tool is Tool holder (7)
The origin may be set based on (8).

(34) is a coupling, and (35) is a bearing bracket.

Hereinafter, the upper and lower tool holders (7)<8) and the first and second rotating members (14) and (15) will be explained in order.

That is, first, the tool holder (7) of the punch tool and the first rotating member (14) that engages with the holder (7), as shown in FIG. The holder (7) is the upper turret (3)
It is a cylindrical body with an upper flange (7a) rotatably loaded in a support cylinder (36) fixed to a punch tool (
5) is prevented from rotating by a vertical key (not shown), and is always urged downward by a spring (37) provided on the side of the punch tool (5) itself. ) is prevented from falling by engaging with a vertical slit (39) formed on the inner surface of the tool holder (7).

Therefore, although the punch tool (5) and the tool holder (7) cannot rotate relative to each other at all times and are vertically movable, the tool holder (7) and the support tube (36) are
The upper flange part (
The following cam lever (7a) is provided so that either a one-rotation possible state or a non-rotatable state can be selectively taken.

That is, the upper flange portion (7a) has a support shaft (42).
A roughly G-shaped cam lever (41) that rotates around the cam lever (41), and a baffle (43) that acts to suppress the negative end of the cam lever (41).
A biased working pin (44) is provided, and the cam lever (41) is normally pushed by the working pin (44) so that the back surface (41a) of the cam lever itself is pushed into the support cylinder (36).
The head of the cam lever (41) is pushed downward by an engaging pin (46), which will be described later, extending from the rotating member (14). When the cam lever (41) rotates and its back side comes off the groove (45), the tool holder (
The cam lever (41) is designed to be rotatable relative to the support tube (36), that is, the upper turret (3) (Fig. 3).The cam lever (41) is attached to the tool holder (7). ), and the flange portion (7a) into which the engaging pin (46) enters has a wedge-shaped groove (47) that matches the shape of the tip of the engaging pin (46).
It is formed.

Next, as shown in FIG. 2, the first rotating member (14) is rotatably mounted around the sleeve portion (1a) that supports the ram (9) of the upper frame (1) in a vertically movable manner. It is a loaded cylindrical body, and as mentioned above, the gear part (1
A worm gear (43) is formed, and is driven to rotate at any angle by the rotation of the meshed worm gear (16).
14) so that the two engaging pins (46) can protrude downwards from the bottom.

That is, fluid chambers (51) in which the piston (49) can freely move up and down are formed at two opposing locations in the first rotating member (14), and the upper and lower portions of the fluid chamber (51) The rotary member (52858) is formed in an annular groove along the entire inner circumference of the rotating member (14), and the piston (49) can be moved up and down freely by external fluid control. The engagement pin (46) is fixed to the lower surface of the piston (49).

Further, another pin (54) is provided on the opposite side of the piston (49).
) is fixed to the body, and when the piston (49) moves up and down in the rotational position of the rotating member (14) shown in the second figure, the upper end of this pin (54) is drilled into the upper frame (1). The sensor rod (55) hanging downward in the hole (1b) is moved up and down.
By detecting the upper end with two proximity sensors (56) and (57), it is possible to detect whether the engagement pin (46) is protruding or retracting.

(58) is a guide frame for the sensor rod (55), (55a)
) is a flange formed in the middle of the sensor rod (55), and (59) is a spring that is interposed in the rod on the flange (55a) and always urges the sensor rod (55) downward.

The length of the pin (54) is such that when the piston (49) is at the lowest position, the upper end of the pin (54) is connected to the first rotating member (1).
4) The sensor rod (55) is long enough to be inserted into the sensor rod (55).
The length of the rod (55) is set to such a length that the lower end of the rod (55) does not enter into the rotating member (14) when the flange portion (55a) is at the lowest position.

As described above, the clutch is constituted by the engagement pin (46) projecting freely from the first rotating member (14) and the wedge-shaped groove (47) formed in the flange portion of the tool holder (7). .

Next, the tool holder (8) of the die tool and the second rotating member (15) that engages with the holder (8) will be explained. As shown in Fig. 4.5, the tool holder of this embodiment (8) is a cylindrical body with an upper flange that is rotatably loaded in a support cylinder (61) fixed to the body of the lower turret (4). The support tube (61) and the tool holder (8) are fastened and fixed, and a cam lever (62) as shown below is provided at the bottom of the tool holder (8) to switch between a rotatable state and a non-rotatable state. Either one can be selected selectively.

That is, as shown in Figure 5, at the bottom of the tool holder (8) there is an abbreviated cam lever (62) that rotates around a support shaft (68), and a cam lever (62) that is pressed against the cam surface of the head of the cam lever (62). A working spring (64) and a biased working pin (65) are provided, and the cam lever (62) is normally pushed by the working pin (65) so that the tip (65) of the cam lever itself is pushed.
2a) is fitted into the groove (66) formed in the support cylinder (61) to prevent rotation (left side in Fig. 5), and the engagement pin (67) extending from the second rotating member (15) This pushes the base of the cam lever (62) upward, causing the cam lever (62) to rotate against the action pin (65).
When the tip (62a) of the tool holder (62a) comes out of the groove (66), the tool holder (8) becomes rotatable relative to the support tube (61), that is, relative to the lower turret (4) (see right side of Fig. 5). The cam lever (62) is provided at two opposing locations on the tool holder (8), and the lower part of the tool holder (8) into which the engagement pin (67) enters is engaged. A wedge-shaped groove (68) is formed to match the shape of the tip of the mating pin (67).In Fig. 5, the left and right mating pins (67) are shown in different states, but this is for convenience of explanation. In reality, the two engaging pins (67) protrude and retract at the same time.

Next, as shown in FIG. 4, the second rotating member (15) is rotatably loaded into the support housing (69) provided at the punching position (P) on the lower frame (2). It is a cylindrical body, and the gear part (L5
a) is formed and is driven to rotate at an arbitrary angle by the rotation of the meshed worm gear (17).The following fluid cylinder (71) is provided inside to rotate the second rotating member (15). ) so that the two engaging pins (67) can protrude upwards from the top.

That is, fluid chambers (73) in which the piston (72) can freely move up and down are formed at two locations facing each other in the second rotating member (15), and the upper and lower portions of the fluid chamber (73) The ports (74) and (75) are formed in annular grooves along the entire outer periphery of the rotating member (15), so that the piston (72) can be moved up and down freely under external fluid control. However, the engagement pin (6υ) is integrally fixed to the upper surface of the piston (72).

Further, another pin (76) is provided on the lower surface of the piston (72).
) is fixed to the body, and when the piston (72) moves up and down in the rotational position of the rotating member (15) shown in the fourth figure, the lower end of this pin (76) is mounted on the lower frame (2). A seesaw-shaped lever (77) is used to raise and lower a sensor rod (78) that is movable up and down on the side, and a dog (79) protruding from the sensor rod (78) is connected to two proximity sensors. By detecting at (81) and (82), the protrusion/retraction state of the engagement pin (67) can be detected.

(83) is the spindle of the seesaw-like lever (77); (84)
) is a guide frame for the sensor rod (78), and (85) is a spring that constantly biases the sensor rod (78) downward.

As described above, the clutch is constituted by the engagement pin (67) that retractably projects from the second rotating member (15) and the wedge-shaped groove (68) formed in the lower part of the tool holder (8).

In this embodiment, the second rotating member (15)
The upper end of the engagement pin (67) in the retracted state shown on the left side of FIG.
102) is formed on the upper part of the support housing (69), and by switching the valve (108) to supply compressed air from an external compressed air source (not shown), the engaging pin (67)
) It is designed so that it can be spouted appropriately at the upper end.

In addition, in the above example, the engagement pin (
67) Although only the nozzle hole (101) for ejecting air was provided at the upper end, the wedge-shaped groove (4) constituting the upper clutch
7) Nozzle hole (104) that blows air toward the top surface (
Of course, it is also possible to provide the chain line shown in FIG. 2.

Further, the fluid cylinders (48) (71) for vertically moving the respective engagement pins (46) (67) may be electrical drive sources such as solenoids.

Next, the operation of the above-mentioned embodiment will be explained. Since the device of the above-mentioned embodiment has the structure as explained above, the turrets (8) and (4) rotate to punch the desired punch tool (
5) When the die tool (6) is held at the ram (9) position, that is, the punching position (P), each rotating member (1
4) When the fluid cylinders (48) and (71) in (15) are operated to make each of the engagement pins (46) and (67) protrude, the tips of the engagement pins (46 and 67) will touch each tool holder. (
7) Fit into the wedge-shaped groove (4υ (68) formed in ) are connected to each other, but before the engaging pin C46) <67) is projected, the valve (103) is switched to direct compressed air from the air nozzle hole (101) to the pin <46) 9. This is to remove machining debris that has entered the head of the pin (46).

When the nozzle hole (104) is provided, the nozzle hole (101) can also be connected from this nozzle hole (104).
At the same time, compressed air is blown out to remove machining debris that has entered the wedge-shaped groove (47).

In addition, the rotation angle of the punch tool (5) and the rotation angle of the die tool (6) when they are connected are adjusted in advance to be in the same phase, and the rotation angle of the servo motor (29) at this time is adjusted as described above. Set the origin according to the method.

Then, as the engaging pins (46) and (67) are fitted, the cam levers (41) and (62) are simultaneously disengaged, so that the turret (3) of each tool holder (7) and (8) is disengaged. (4), and the vertical position of each of the sensor rods (55) and (78) is detected by a proximity sensor. ) (68).

Furthermore, confirm with a pressure switch that the fluid pressure in the fluid chamber on the fluid port (52) (74) side, that is, on the side from which the engaging pin (46 x 67) is projected, has reached a predetermined pressure (and circuit). ), the servo motor (29) is rotated by a predetermined angle, and the transmission shaft (
24) (25), worm gears (16), (17), etc. Second rotating member (14) (1
5) is rotated by the same predetermined angle, and eventually the punch tool (5)
, the die tool (6) is rotated by the same angle.

After the tools (5) and (6) are rotated as described above, the ram (9) moves up and down to perform a predetermined punching process, and then the servo motor (29) is rotated again and the first ．． The second rotating members (14, 15) are returned to their original positions, that is, the tools (5, 6) are returned to their original angles, and the engagement pins (46, 67) are moved to their respective rotating members ( 14)(
15) Moves inwards and disconnects.

At the same time as the connection is removed, the cam levers (41) (62)
) are pushed by the respective working pins (44) and (65) and engage with the grooves (45 pins (66)) on the turret (3) and (4) sides, respectively, and the tools (5) and (6) and the tool holder (7 ) (8)
is fixed again to the turret (B'l (4)) so that it cannot rotate.

Furthermore, when the engagement pins (46) (67) move in and out of each rotating member (14 bar 15), the pins (54) (76) on the other side move the sensor rods (55 buff 8), respectively. This is confirmed by the proximity sensor (56) (82).

In addition, in the above description, a pair of punch tools (5) and die tools (6) on turrets (3) and (4) were explained, but all punch tools on turrets (8) and (4),
Of course, the die tools may have the same rotatable structure, or any number of tools at any location may be rotatable, while other pairs of tools may be fixed to the turret.

〔Effect of the invention〕

As is clear from the above description, in the mold rotating device according to the present invention, the engaging end of the clutch can be kept in a good condition free of machining debris and the like by air jetted from the air nozzle prior to clutch engagement. Therefore, we were able to maintain the clutch connection in a perfectly good condition at all times, and almost completely eliminate problems in the meshing of the upper and lower tools (punch tool, die tool) caused by mechanical causes.

[Brief explanation of drawings]

@ Figure 1 is a side view of the turret part of the turret punch press machine according to the present invention, Figure 2 is a partially cross-sectional side view of the punch tool and the first rotating member part, and Figure 3 is a longitudinal side view of the punch tool part. 4 is a partially sectional side view of the die tool and the second rotating member portion, and FIG. 5 is a sectional view taken along the line -v in FIG. 4. (1) Upper frame, (2) Lower frame, (3) Upper turret, (4) Lower turret, (5) Punch tool, (6)
・Die tool. (7) (8)...Tool holder, (14)...First rotating member (rotation drive means). (15)...Second rotating member (rotational drive means), (4
6)(67)...Engagement pin, (47)(68)・
... Groove, (101) ... Nozzle hole, (102)
...-Air guide hole. (104)...Nozzle hole. Figure 2 Army Figure 3a Figure 4 Recession 5

Claims (1)

[Claims] A punch tool provided on the upper turret is rotatable around an axis perpendicular to the upper turret, a die tool provided on the lower turret is rotatable around an axis perpendicular to the lower turret, and a punch tool provided on the fixed frame is rotatable around an axis perpendicular to the lower turret. , a turret in which rotary drive means facing the upper turret and lower turret, respectively, are interlocked and interlocked with the tool holder of the rotatable punch tool and the tool holder of the rotatable die tool via a clutch so as to drive the rotation. 1. A mold rotation device for a turret punch press machine, characterized in that the punch press machine is provided with an air nozzle that blows air toward an engagement end of the clutch.