JPH0367768B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a turret punch press machine that facilitates installation and enables automation by installing a mold together with a mold holder into a processing machine.

Conventionally, in a turret punch press machine, the mold holder is fixed to the mold mounting board, and the distance between the mounting and fitting parts of the mold is 0.01 over the entire circumference of the mold.
Because it is extremely narrow (less than mm), mounting the mold requires careful consideration to align and prevent it from tilting, so it must be done manually.
Automation using robots, etc. was impossible and required a lot of time.

This invention has been made in view of the above points, and it is possible to remove the mold holder that was conventionally fixed integrally to the mold mounting board, so that the mold holder with the mold mounted can be mounted as is. Therefore, it is an object of the present invention to provide a turret punch press machine that facilitates the installation of molds, automates mold exchange, and automates the entire process. Examples of the present invention will be described below.

Figures 1a and 1b are a side view and a cross-sectional view taken along line A-A of the turret punch press machine of the present invention;
Figures a and b are an enlarged plan view of essential parts and a side sectional view taken along the line B--B, showing an embodiment of the present invention. In these figures, reference numeral 1 denotes a frame body, on which a press section 2, a hammer 3, an upper turret board support shaft 4, and a lower turret board support shaft 5 are held. An upper turret board 6 is attached to the lower end of the upper turret board support shaft 4.
is installed. The upper turret substrate 6 is provided with a hole 6a having a diameter larger than the outer diameter of the convex portion of the replacement upper mold holder 28 to which the replacement upper mold holder 28 (FIG. 2) is mounted. A hole having a step above the hole 6a and having a diameter larger than the diameter of the hole 6a and larger than the outer diameter of the flange portion of the replacement upper mold holder 28 is provided, and the hole provides a reference surface for attachment and detachment. 6b is formed. In addition, each replacement upper mold holder 28
The upper mold 7 is housed in the housing.

The upper turret substrate support shaft 4 is held at the upper part of the frame body 1 and transmits rotation to the upper turret substrate 6.

A lower turret board 9 is attached to the upper end of the lower turret board support shaft 5 so as to face the upper turret board 6. The lower turret board 9 has a replacement lower mold holder 3 corresponding to the replacement upper mold holder 28.
Replacement lower mold holder 3 to which 5 (Fig. 2) is attached
A hole 9a having a diameter larger than the outer diameter of the convex portion 5 is provided. The hole 9a has a step above the hole 9a.
A hole having a diameter larger than the outer diameter of the flange portion of the replacement lower mold holder 35 is provided, and the hole forms a reference surface 9b for attachment and detachment. Further, each replacement lower mold holder 35 accommodates a lower mold 10. The lower turret board support shaft 5 is held at the lower part of the frame body 1, and the lower turret board 9
transmits rotation to.

The hammer 3 is driven by the press section 2 and hits the head 8 of the upper mold 7, thereby releasing the pair of upper mold 7 and lower mold 10.
Accordingly, punching is performed on the workpiece W.

Reference numeral 11 denotes a rectangular coordinate positioning mechanism for moving the work W in two orthogonal axes directions and positioning the work W between the upper mold 7 and the lower mold 10. 12 is a base frame of the orthogonal coordinate positioning mechanism 11. X-axis direction guide rails 13, 14 are attached to the upper surface of this base frame 12, and these X-axis direction guide rails 13, 1
X-axis table 1 can be moved in the X-axis direction by
5 is provided.

An X-axis guide table 16 constituting a workpiece support section is provided on the upper surface of the X-axis table 15 on the substrate side, and a plate-shaped workpiece W held in a cantilevered state by the workpiece holding devices 21, 21 is moved along the X-axis. It is placed and supported on the guide table 16.

Y-axis direction guide rails 17 and 18 are attached to the upper surface of the X-axis table 15, and are perpendicular to the X-axis direction guide rails 13 and 14. A Y-axis table 19 is provided so as to be movable. On the Y-axis table 19, workpiece holding devices 21, 21 for holding the workpiece W in a cantilevered state are attached to both ends of a holding rail 20 in the X-axis direction.

Furthermore, fixed guide tables 22 and 23 for supporting the workpiece W are provided on the left and right sides of the lower turret board 9.

On the upper surfaces of the X-axis guide table 16 and the fixed guide tables 22 and 23, a ball rotating body 24 for smoothly sliding the workpiece W is rotatably attached so as to protrude upward.

Further, in FIG. 2, 25 is an upper mold stripper, 26 is an upper mold stopper ring, 27 is a stripper spring, 28 is a replacement upper mold holder, and 28a is a circumferential surface of the flange portion of the replacement upper mold holder 28. , 28b is a groove for positioning, 28c is an abutment surface formed by a notch, and 28d is a mounting surface, and the portion below this forms a convex portion that loosely fits into the hole 6a. 29
30 is an upper mold upper limit stopper, 30 is an upper mold receiving plate, 31 is an upper mold lifting spring, and 32 is attached to the attachment/detachment reference surface 6b of the upper turret board 6, and is engaged with the groove 28b of the replacement upper mold holder 28. A lateral positioning gauge 33 is attached to the attachment/detachment reference surface 6b of the upper turret board 6 and is abutted against the abutment surface 28c of the replacement upper mold holder 28 to determine the position in the front-rear direction. It is. 34 is an upper mold stopper, 35 is a replacement lower mold holder, 35a
is the circumferential surface, 35b is the groove, 35c is the abutment surface, 35
d is the mounting surface. In addition, the grooves 28b and 35b are tapered at the contact points to facilitate attachment and detachment of the replacement upper mold holder 28 and the replacement lower mold holder 35, but this is provided on the side of the lateral positioning gauge 32. It is obvious that it is okay.

Note that the lateral positioning gauge and abutment gauge of the replacement lower mold holder 35 on the lower turret board 9 are omitted from illustration because they have the same shape as those of the upper turret board 6 and are located in corresponding positions.

Next, the operation will be explained.

In order to perform processing with the turret punch press machine having the above configuration, the upper turret substrate 6 and the lower turret substrate 9 are
Upper mold 7 and lower mold 10 necessary for processing by rotating
Select and fix under hammer 3. Then, the workpiece W held in a cantilever state by the workpiece holding devices 21, 21 is moved by the X-axis table 15 and the Y-axis table 19, and the part of the workpiece W to be processed is moved to the upper mold. 7 and the lower mold 10. When the workpiece W is positioned, the press section 2 operates to lower the hammer 3 and strike the head 8 of the upper mold 7, thereby punching a hole in the workpiece W.

Next, a case will be described in which the replacement upper mold holder 28 with the upper mold 7 mounted thereon is mounted on the upper turret substrate 6. The replacement upper mold holder 28 is taken out from the mold storage location by gripping the circumferential surface 28a or the metal fitting on the upper surface of the replacement upper mold holder 28 by an arm of a mold mounting device (for example, a handling device) (not shown). The arm of the handling device that grips the replacement upper mold holder 28 moves downward when it is located above the hole 6a of the upper turret board 6, and the mounting surface 28d of the replacement upper mold holder 28 is in the vertical position. The lowering is stopped at the point where it comes into contact with the attachment/detachment reference surface 6b that determines the attachment/detachment (the position indicated by the broken line in FIG. 2). After that, the arm of the handling device is moved by a small distance in the front and back direction, that is, in the carrying direction, so that the groove portion 28b, which is the reference point for positioning the replacement upper mold holder 28 in the left and right direction, is engaged with the lateral positioning gauge 32. The horizontal position is determined. Furthermore, groove part 2
The arm of the handling device is moved in the loading direction until the abutting surfaces 28c, which are the reference points for positioning in the longitudinal direction provided on both sides of the handle 8b, come into contact with the abutment gauge 33, and positioning in the longitudinal direction is performed. Once the setting position is determined, the replacement upper mold holder 28 is fixed to the upper turret base plate 6 by the upper mold stopper 34. Thereafter, the arm of the handling device stops gripping the replacement upper die holder 28 and leaves the turret punch press machine.

That is, since the upper turret substrate 6 is provided with a hole 6a having a diameter larger than that of the replacement upper mold holder 28, the replacement upper mold holder can be removed by the arm of the handling device within the allowable range of the difference in diameter between the two. Once the holder 28 has been positioned to be carried in, it can be accurately positioned at the final mounting position by guiding the holder 28 while making contact with the positioning reference points using the two positioning gauges.

Moreover, the removal of the replacement upper mold holder 28 is performed in the opposite manner to the above. Furthermore, the operation of attaching and detaching the replacement lower mold holder 35 is performed in the same manner as described above.

As explained above, the present invention enables the positioning of the replacement upper mold holder in the front and back direction using the replacement upper and lower mold holders and the abutment gauges provided on the upper and lower turret boards, and the lateral positioning provided on the upper and lower turret boards. The positioning gauge allows the replacement upper and lower mold holders to be positioned in two directions (left and right), and the mold can be attached and removed freely, so holes are made on the turret board to match the outside shape of the mold, unlike conventional methods. Compared to the previous case where the upper and lower molds had to be inserted while keeping them parallel to the upper and lower turret substrates so that the clearance over the entire outer circumference of the mold satisfied the condition of 0.01 mm or less, changing the mold was significantly easier. It has become easier and faster. Therefore, when trying to automatically exchange the upper and lower molds, there was no handling device that could position the molds with accuracy less than the clearance between the substrate and the mold, and automatic exchange using such a device was not possible. In this invention, the positioning accuracy of the handling device with respect to the turret board may be greater than the clearance, and accurate positioning can be achieved simply by bringing the positioning reference points of the replacement upper and lower mold holders into contact with the abutment gauge and the lateral positioning gauge. The existing handling equipment is sufficient to automatically attach and detach the upper and lower molds.

Furthermore, the grooves and abutting surfaces formed on the upper and lower mold holders can be cut from the outer periphery of the flange.
It is easy to form and does not require complicated processing unlike conventional methods.

In addition to the convenience of the turret punch press machine, which performs a wide variety of punching operations by selecting multiple pairs of molds mounted on the turret board, we also offer a large number of replacement upper and lower molds prepared in locations other than the turret board. Since the upper and lower molds housed in the mold holder can be automatically replaced, there is an advantage that the types of processing can be dramatically increased.

[Brief explanation of drawings]

Figures 1a and b are a side view and a sectional view taken along line A-A of a punch press machine equipped with a mold exchange mechanism according to the present invention, and Figures 2a and b are essential parts showing an embodiment of the present invention. FIG. 2 is an enlarged plan view and a side sectional view taken along line B-B. In the figure, 1 is the frame body, 2 is the press part, 3 is the hammer, 4 is the upper turret board support shaft, 5 is the lower turret board support shaft, 6 is the upper turret board, 6a is the hole, 6b is the reference surface for attachment and detachment, 7 is an upper mold, 8 is a head, 9 is a lower turret substrate, 9a is a hole, 9b is a reference surface for attaching and detaching, 10 is a lower mold, 11 is a rectangular coordinate positioning mechanism, 12 is a base frame, 13, 14 15 is an X-axis guide rail, 15 is an X-axis table, 16 is an X-axis guide table, 17 and 18 are Y-axis guide rails, 19 is a Y-axis table, 20 is a holding rail, 21 is a work holding device, 22, 23 is a fixed guide table, 24 is a ball rotating body, 25 is an upper mold stripper, 26 is an upper mold stopper ring, 27 is a stripper spring, 28 is a replacement upper mold holder, 28
a is the circumferential surface, 28b is the groove, 28c is the abutment surface, 2
8d is a mounting surface, 29 is an upper mold upper limit stopper, 30 is an upper mold receiving plate, 31 is an upper mold lifting spring, 32 is a lateral positioning gauge, 33 is a stop gauge, 34 is an upper mold stopper, and 35 is a replacement lower part. In the mold holder, 35a is a circumferential surface, 35b is a groove, 35c is an abutment surface, 35d is a mounting surface, and W is a workpiece.

Claims (1)

[Scope of Claims] 1. A hammer drive device that drives the hammer 3, an upper turret board 6 and a lower turret board 9 that are rotatably supported on a frame facing each other, and The upper and lower turret substrates are rotated in order to select a desired pair of upper and lower molds among the plurality of pairs of upper and lower molds and set it below the hammer. A turret punch press machine equipped with a turret rotation device in which the upper and lower molds can be respectively mounted, a convex portion extending downward, and a flange portion that contacts the upper and lower turret substrates and determines the vertical position. , grooves 28b and 35b for positioning in the left and right directions formed on the outer periphery of this flange, and abutment surfaces 28c and 35c formed by notches on both sides of this groove for determining the position in the carrying direction. It has a mold holder 28 and a replacement lower mold holder 35, and the upper and lower turret substrates have a horizontal positioning gauge corresponding to the groove provided in the flange of the replacement upper and lower mold holder, and a lateral positioning gauge on the abutment surface. Holes 6a and 9a each have a diameter larger than that of the convex part of the upper and lower mold holders for guiding and accommodating the convex part of the upper and lower mold holders, and holes 6a and 9a for receiving the flange part and for guiding and housing the convex parts of the upper and lower mold holders. A turret punch press machine characterized in that it is provided with attachment/detachment reference surfaces 6b and 9b for determining the directional position, and fixing means for fixing the upper and lower replacement holders.