JPS62292225A - Turret punch press machine - Google Patents

Abstract

PURPOSE:To save an excessive rotational operation of a turret, and to quickly return it to its original point, by setting an original point reset position of the upper turret and the lower turret, to a connecting position of a rotation driving means, and tool holders of a punch tool and a die tool, which can rotate freely. CONSTITUTION:When a worker pushes an original point reset button, turrets 3, 4 are rotated in one direction, and stopped at the time point when a proximity switch 105 has detected a dog 106. In this stop position, a holder 7 of a punch tool and a holder 8 of a die tool, which can rotate freely become right lower and right upper positions of an engaging pin, respectively, therefore, immediately after the proximity switch 105 has been turned on, the engaging pin is projected by a sequence relay. As a result, rotary members 14, 15 and each holder 7, 8 are connected, and subsequently, each rotary member 14, 15 is rotated in one direction until a proximity switch 108 is turned on by a dog 109, and an original point reset is executed.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a turret punch press machine, and in particular, at least one set of punch tools and die tools mounted on the turret are rotatable, and the same tool This invention relates to a turret punch press machine that can form holes at various angles.

[Conventional technology]

A turret punch press machine, in which tool dies such as punches and dies on a turret are made rotatable, and holes at various angles can be formed using the same die, is known, for example, from Japanese Patent Application Laid-open No. 5
It is known in No. 8-58838 and the like.

By the way, in general, in a turret punch press machine, before the numerical control device starts automatic operation, the turret is returned to its origin, and only through this operation does the actual turret angle change to the set angle ( This means that the turret's origin position matches the original position, and subsequent automatic operation will be performed accurately.However, the origin position of this turret is usually set to the position where the largest mold to be processed is held at the punch position. This setting allows the operator to easily visually confirm that the turret has returned to its home position (in other words, the punch position is usually at the maximum position on the operator's side). (because it's on the front)
In a punch press machine equipped with a rotary mold as described above on a turret, the following troublesomeness arises rather than the advantage that the return-to-origin state can be easily confirmed visually as described above.

[Problem that the invention seeks to solve]

In other words, the control axis related to the rotary mold on the turret must also be returned to its origin, but the state in which the largest fixed mold other than the rotary mold is held at the punching position is the state in which the turret returns to its origin. In this case, - After the giant turret has returned to its origin, manually rotate the turret by a predetermined angle and move the desired rotary mold to the punching position (connectable position), and only then can the fixed frame side The rotary drive means was connected to a tool on the turret to return the rotary mold to its origin.

In other words, it was necessary to manually rotate the turret between the return-to-origin operation for the control axis of the turret and the return-to-origin operation for the control axis of the rotary mold.

[Means for solving problems]

Therefore, in order to eliminate the above-mentioned trouble, this invention sets the origin return position of the turret to a position where the rotary drive means on the frame can be connected to the rotatable punch tool holder and the gouging tool holder on the turret. It is proposed to set it to .

〔Example〕

Examples will be described below based on the drawings.

In Fig. 1, (1) and (2) are the upper and lower frames of the main body, respectively.The upper frame (1) rotatably supports the upper turret (3), and the lower frame supports the lower turret (3).
4) is also rotatably supported.

This turret (8) (4) has sprockets (8a) (4a) fixed to the respective shafts and one motor (100).
The sprocket (101) of the shaft is connected to the endless chain (102) (108) etc. and the connecting shaft (10) as shown in the first figure.
The upper turret (3) is equipped with a punch tool (
5), but the lower turret (4) has a gui tool (6),
They are supported via tool holders (7) and (8), which will be described in detail later.

(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)
3) Insert the punch tool (5) into the upper knob-shaped flange (5).
When a) 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 (3) rotates, the flange portion (5a) of the punch tool (5) freely moves back and forth in the engagement groove (18), but the turret (8) ) 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 in unison with this.

Among the many tools on the turret (8) (4), the tool holders (7) (8) of at least one set of tools are rotatable relative to the turret (8) (4), respectively. The vertical movement axis (punching axis) of the above ram (9)
Upper and lower frames (1) can be freely rotated around (P)
(2) The first and second rotating members (
14) It is designed to be rotationally driven by being directly connected with a clutch to (15).

Note that the rotating member (14) on the upper and lower frames (1) (2)
) (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) A worm gear (16x17) that meshes with (15a), and a toothed pulley (
A servo motor (29 ), the drive input is performed by connecting the transmission shaft (24X
25) By connecting the two through the toothed pulleys (81, 82) and the toothed bell (88), the servo motor (29) only needs to be provided on one transmission shaft (25) side. Moreover, it is inevitable that the rotation speeds of the upper and lower transmission shafts (24) and (25) match each other, but servo motors are connected to the upper and lower transmission shafts (24 and 25) individually. Good too.

(34) is a coupling, and (85) is a bearing bracket.

Hereinafter, the upper and lower tool holders (7) and (8) and the first and second rotating members (14X15) 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) will be explained. As shown in FIG. 2.3, the tool holder of this embodiment (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, the punch tool (5) and the tool holder (7) are always not relatively rotatable and are vertically movable, but the tool holder (7) and the support tube (86), that is,
The upper flange part (
Either a rotatable state or a non-rotatable state can be selected by a cam lever (41) as shown below provided in 7a).

That is, the upper flange portion (7a) has a support shaft (42).
A substantially G-shaped cam lever (41) that rotates around the cam lever (41), and a spring (43) that presses against one 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 against 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 (
7) is designed to be freely rotatable with respect to the support cylinder (36), that is, with respect to the upper turret (3) (Fig. 3). The cam lever (41) is provided at two opposing locations on the tool holder (7), and the flange portion (7a) into which the engagement pin (46) enters is shaped to match the shape of the tip of the engagement pin (46). Wedge-shaped groove (47)
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
4a) is formed and engaged with the worm gear (16)
The rotary member (48) is rotated at an arbitrary angle by the rotation of
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 ports (52) (5B) are formed in an annular groove along the entire inner circumference of the rotating member (14), and the piston (49) can be freely moved up and down by external fluid control. However, the engagement pin (46) is integrally fixed to the lower surface of the piston (49).

Further, on the upper surface of the piston (49) there is another bottle (54).
) are fixed integrally, 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 bottle (54) is fixed to the upper frame (1). Move the sensor rod (55), which is hanging downward in the hole (1b), up and down.
By detecting the upper end with two proximity sensors (56 x 57), it is possible to detect the protrusion/retraction state of the engagement pin (46).

(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 bottle (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) that is integrally fixed to the lower turret (4), and a die tool (6) is fastened to the upper part by a known means. The support cylinder (61) and the tool holder (8) are connected between a rotatable state and a non-rotatable state by a cam lever (62) as shown below provided at the bottom of the tool holder (8). Either one is called selective G.

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 (63), and a cam lever (62) that presses 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 a groove (66) formed in the support tube (61) to prevent rotation (left side in FIG. 5), and an engagement pin (67), which will be described later, extends from the second rotating member (15). The base of the cam lever (62) is pushed upward and the cam lever (62) rotates against the action pin (65).
When the tip (62a) of the tool holder (8) comes off the groove (66), the tool holder (8) becomes rotatable with respect to the support tube (61), that is, with respect to the lower turret (4) (see right side in Fig. 5). ). The cam levers (62) are 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 shaped like the tip of the engagement pin (67). Together, they are formed into a wedge-shaped groove (68). In FIG. 5, the left and right engaging pins (67) are in different states, but this is shown for convenience of explanation, and in reality, the two engaging pins (67) protrude at the same time. Immerse yourself at the same time.

Next, the second rotating member (15) is rotatably loaded into the support tube (69) provided at the punching position @(P) on the lower frame (2), as shown in FIG. It is a cylindrical body with a gear part (15a) formed on its outer periphery as described above, and is driven to rotate at any angle by the rotation of the meshed worm gear (17). A fluid cylinder (71) is provided to connect 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 opposing locations 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 an annular groove along the entire outer circumference of the rotating member (15), and the piston (72) can be freely moved up and down by external fluid control. However, the engagement pin (67) is integrally fixed to the upper surface of the piston (72).

Further, on the lower surface of the piston (72) there is another bottle (7B).
) are fixed integrally, 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) A sensor rod (78) provided horizontally so as to be vertically movable is moved up and down via a seesaw-shaped lever (77), and a dog (79) protruding from the sensor rod (78) is connected to two proximity sensors (81882). ), it is possible to detect the protrusion/retraction state of the engagement pin (67).

(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 addition, the wedge-shaped grooves (47) (
68) may be dog clutches of various other shapes or may be electromagnetic clutches.

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

Since the device of the above embodiment has the structure as explained above, the turret (8) (a) rotates to punch the desired punch tool (
5), when the Goo 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 (47868) formed in (8), so that the first rotating member (14) and the tool holder (7) and the second rotating member (15) and the tool holder (8) are connected to each other. Husband is connected.

The rotation angle of the punch tool (5) and the rotation angle of the die tool (6) when connected are adjusted in advance to be in the same phase.

Then, as the engagement pin (46867) is fitted, the cam levers (41) and (62) are disengaged at the same time, so the turret (3) of each tool holder (7) (8) is disengaged.
) (4), and a total of four valley grooves ( 47) Confirm reliable engagement with (68),
Furthermore, on the fluid port (52X74) side, that is, the engagement pin (
46) After confirming with the pressure switch that the fluid pressure in the fluid chamber on the side that causes (67) to protrude has reached the specified pressure (via the AND circuit), the servo motor (29) is activated for the first time. The transmission shaft (
24) (25), the first and second rotating members (14X15) via a transmission system consisting of a worm gear (16X17), etc.
are rotated by the same predetermined angle, and as a result, the punch tool (5) and gouging tool (6) are 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 member (14X15) is returned to the original position, that is, each tool (5) (6) is returned to the original angle,
The engagement pins (46) (67) are connected to each rotating member (14) (15).
) and the connection is removed.

At the same time as the connection is removed, the cam levers (41) (62)
) are pushed by each action pin (44865) and engage with the grooves (45) and (66) on the red (8) and (4) sides, respectively,
The tools (5) (6) and the tool holders (7) (8) are again non-rotatably fixed relative to the turret (8) (4).

In addition, each rotating member (14) of the engagement pin (46) (67)
(15), the pins (54) and (76) on the other side are used.
but.

This is confirmed by the proximity sensors (56) (82) by moving the sensor rods (55) (78), respectively.

On the upper talent (3), when the rotatable punch tool (5) and die tool (6) are held at the punching position (P), the rotatable punch tool (5) and the die tool (6) are installed close to each other vertically from the upper frame (1). A dog (106) for returning to the origin, which turns on the switch (105), is fixed (Fig. 1.6).
On the side of the rotating member (14) is a proximity switch (1) fixed to the upper frame (1) via a bracket (1 (17)).
There is a protruding dog (109) for returning to the origin (108) (FIGS. 1 and 2), and the return to origin operation is performed in the following order.

That is, when the operator presses the return-to-origin button, the turret (8) (4) is first rotated in one direction, and then stopped when the proximity switch (105) detects the dog (106), and returns to this stop position. Now, since the rotatable punch tool holder (7) and goo tool holder (8) are positioned directly below and directly above the engagement bins (46) and (67), respectively, the proximity switches (105) and (7) ) After ON,
Engagement pins (46) (6) are immediately activated by the sequence relay.
7) moves to protrude, and the rotating members (14) and (15) are connected to each holder (7) and (8), and then each rotating member (14)
) (15), the proximity switch (108) is a dog (
109), the motor rotates in one direction and returns to the origin.

In the above example, each rotating member (14) (15) is rotated synchronously by one servo motor (29), so the upper and lower tool holders (7) and (8) are always rotated at the same angle. rotated, and each engagement pin (46) (67
) are fitted, so that the rotation starting points of each holder (7) and (8) are always at the same angle.
After the servo motor (29) is rotated a predetermined amount, the upper and lower tools (5) and (6) are both at the correct origin angle.
) are rotated by separate servo motors, the same dog (109) and proximity switch (108) provided on the rotating member (14) are provided on the lower rotating member (15), Upper rotating member (14) and punch tool holder (
7) and the return-to-origin operations of the lower rotating member (15) and the goo tool holder (8) may be performed separately and sequentially.

〔Effect of the invention〕

In any case, as is clear from the above description, in the turret punch press machine according to the present invention, the extra rotational movement of the turret is omitted, so that the return-to-origin operation can be performed more quickly.

[Brief explanation of drawings]

Fig. 1 is a side view mainly of the turret part of a turret punch press machine according to the present invention, Fig. 2 is a partially sectional side view of the punch tool and the first rotating member part, and Fig. 3 is a side view of the punch tool part. FIG. 4 is a partial cross-sectional side view of the die tool and the second rotating member, FIG. 5 is a cross-sectional view taken along the line v-V in FIG. 4, and FIG. 6 is a schematic plan view of the upper turret. be. (1) (2)...Frame, (8)...Upper turret. (4)...Lower turret, (5)...Punch tool, (6)...Die tool, (7)(8)...
・Tool holder, (14X15)...rotating member,
(46) (67)...Engaging pin, (105)...Proximity switch, (106)...Dog, (108
)...Proximity switch, (109)...Dog. Male 2nd drive 6 Tomoe Shizuku 3ma 5, I 4th concave 5th figure

Claims (1)

[Claims] At least one punch tool installed on the upper turret
are rotatable around an axis perpendicular to the upper turret; at least one of the die tools provided on the lower turret is rotatable around an axis perpendicular to the lower turret; A turret punch press machine in which a rotational drive means facing the upper turret and lower turret is removably connected to a tool holder of the rotatable punch tool and a tool holder of the rotatable die tool for rotational driving, A turret punch press machine, characterized in that the return-to-origin positions of the upper turret and the lower turret are set at a connection position between the rotation drive means and a tool holder of a freely rotatable punch tool and die tool.