JPS6152943A - Press - Google Patents

Abstract

PURPOSE:To obtain the titled press that heightens accuracy of blanking work by energizing one or both of a punch die and a die for press work in a plane at right angles to the direction of pressing, holding it movably, and matching positioning of blanking accurately. CONSTITUTION:A punch die 2 and a punch guide 6 of a press stand 1 are held between a punch base 5 and a peripheral wall 5a and an energized 11 punch cover 7, and air pressure is given to annular grooves 5b, 5c to make them floating state. A pilot pin 13 enters positioning positions (c), (d) of the groove S of a work W by the press, and then enters a punch die hole to make positioning. Thereafter, a blanking edge 12 enters cut-off parts (a), a' accurately, and cuts off. When a die 4 on the tapping stand 3 is made floating state by giving air pressure 23 to annular grooves 22c, 22f, the fitting of a positioning hole 32 of the die 4 and blanking hole 31 can be made better. Worked products A, B which are not cut off from the work W are cut off beautifully without causing stagger.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is a method for making a punch die and a die die follow each other's positions by movement of the die due to the processing operation in press working. At the same time, being able to move the positions of both molds to follow the position of the machining shape that is already being processed by the cutting tool makes it possible to more accurately form the machining shape on the machine to be processed. This relates to a press machine that is intended to prevent people from losing their lives.

(Prior art) The functions of a press machine include punching, extrusion, and enclosing, but the products processed by a press machine are
Most of them require operations such as tapping one screw, countersinking, cutting a small hole with five steps, and chamfering two welds. Therefore, these steps are required after the press processing step, but
Conventionally, the material was cut into product units in the press processing process, and then sent to the next process as a single item for processing.

With conventional methods such as this method, it is difficult to handle products with various product sizes and shapes required in today's high-mix, low-volume production, and automation of processing has been impossible.

(Problems to be Solved by the Invention) In order to solve these problems, the apparatus of the present invention performs processing in each step while each product is joined to the raw workpiece in the final step I of processing, and By making it possible to separate each product into individual parts during the process, it is possible to handle each product on a material-by-material basis.

In addition, in order to avoid damaging the processed shape and quality of the previous process, we also recommend a mold holding device that uses compressed gas to float the mold, which allows cutting and separating processes to follow the shape processed in the previous process. 1.

Since it is possible to perform a cutting process that follows the machining shape of the previous process, even if the precision of the processing machine in the previous process is poor and the cutting is separated or the position is misaligned, the device of the present invention can still perform cutting. +Ii
With L processing, there is no deviation from the previous processing, so it is possible to obtain a product with a beautiful finished surface.

Furthermore, since the mold is a floating/floating structure using compressed gas, the friction between the holder that houses the mold and moves, and the fixed KGm,
Due to fluid friction, the movement of the 7i:9 mold is light and smooth.

Therefore, it can be said that there is no damage to the product due to the copying mechanism of the mold that copies the product shape.

In addition, since the movement guide is not a solid bearing, the press force during processing is received over the entire flat surface, making the mechanical strength several hundred times stronger. First, we will explain the workpiece (
The workpiece will be explained with reference to FIG. 15.

The work w (processed material B) is made of regular-sized board material, and there are several board products in the shape of parts A, B, C, etc., with 2 parts on each side.
Leaving the connection capital a' r a' r b 1 b', the surrounding area has already been cut out. Each part A
, B, C, . . . have a large number of pilot holes, mounting holes, etc., located at predetermined positions, although not shown.

Therefore, when the press machine according to the embodiment is operated, these many joint parts ajbl"Jb are sequentially punched 47, so that the metal of the workpiece W at each punching is changed. For positioning action against the mold, for example, in the case of the joint 'o''14 a of part A, the notches S on both sides of joint a,! Mold positions c and d are now used.

By the way, in this German punching process, due to positional deviation, the joints NS a) b) a', b
If there is a step left between the cut edge of the inner circumference of ' and the inner edge of the notch S, it will not only damage the appearance of the product board, but also cause trouble when assembling or transporting the product board later. In order to prevent this problem, the mold holding means of the press is required to have a function that allows the position of the mold in the horizontal plane to be adjusted and moved in accordance with the reference position of the workpiece. .

The present invention has been made to satisfy the above-mentioned functions, and an object of the present invention is to provide a press machine that can increase the flexibility of the adjustment movement position of the mold. .

(Another means to solve the problem) As a means to achieve the purpose, the press machine of the present invention has the following features:
A moving mechanism that holds a mold holding device that holds a punch mold and a guide mold in a floating state on a fixed base, and a mechanism that moves the mold to a fixed position on the base when no load is applied. The invention is characterized in that it has a positioning mechanism that causes the positioning mechanism to move.

The present invention will be described below based on an illustrated embodiment.

As shown in FIGS. 1 to 14, the press machine equipped with the support device of the embodiment has a punch mold 2 held on an immovable press table 1 located above, and a fixed tap located below. A Gui mold 4 is held on a stand 3, and first,
The holding structure of the punch die 2 will now be described with reference to FIGS. 1 to 8.

First, a ring-shaped punch base 5 having a center hole is inserted into the bottom of a natural circular receiving hole 1a cut into the upper half of the press table 1. is formed so that its outer diameter is slightly smaller than the inner diameter of the receiving hole 1a, and the four half-arc portions of the outer circumferential mark on its upper surface are
Anniversaries 5a within Atsushi are erected at appropriate intervals.

Therefore, in the inner part of the circumference 145a on the punch base 5, there is a punch such as a buried plate with a boss 6a protruding downward, and the id 6 is superimposed thereon, and the screw 6a is inserted through a slight clearance. The four protruding parts 6b protruding from the outer periphery of the punch guide 6 in a cross shape are inserted into the center hole of the base 5 through a slight clearance.
It is facing the Kube area between 5 and a.

Next, a ring-shaped punch cover 7 is provided on the upper surface of the punch mold holding device (punch guide) 6 including the projecting portion 6b with a slight gap between the punch cover 7 and the punch cover 7. Insertion holes 7a for centering steel balls 8, which will be described later, are provided on both sides.
passes through the top and bottom.

Incidentally, at the four corners of the square on the upper surface of the punch guide 6 mentioned above, pillars 9 made of port are erected with a selvedge. between the lower surface of the collar and the upper surface of the punch guide 6, there are compressed coil springs 1, respectively.
1 is sandwiched.

The punch die 2 is provided with a punching cutting blade 12 having a square cross section at the center of its bottom, and a pair of pilot pins 13 protruding from both sides of the cutting blade 12. In addition, it can be tightly inserted into and held in the inner hole of the post 6a of the punch cover 6 from above, and the upper end thereof is formed at the upper end after passing through the bottom plate of the spring receiver 10, so that the punch head 14 is placed on the bottom plate. is hooked to.

Note that the upper surface of the punch head 14 is in contact with the lower end of a press h30 of a press machine (not shown), and a lower end of the outer periphery of the punch base 5 is connected to a high-pressure full air supply pipe (not shown). A connector 15 is provided in a protruding manner.

Next, each of the above-mentioned members, namely the press table 1 and the punch base 5,
, the punch guide 6, and the punch cover 7. The assembly and engagement relationship between each member will be described.

First, the punch base 5 is fixed to the press table 1 by four fixing bolts 16 pushed into the base 5a by an upper surface force, and the punch cover 7 is fixed to the press table 1 by similar fixing bolts (not shown). The punch is fixed to the punch base 5 with a slight gap between the punch and the id 6.

The punch guide 6 is held floating above the punch base 5 via the moving mechanism described below, and is button-engaged with the punch cover 7 and the punch base 5 via the positioning mechanism described below.

(a) Moving mechanism This mechanism has a concave shape formed on the upper surface of the punch base 5, each forming a thin film-like space (predetermined gap) 5b at an angle of approximately 90°.
Four nozzle holes vertically communicate the fan-shaped lower part of the arc, the ventilation ring '#5c formed on the lower surface of the base 5, and the center area of each thin film space 5b and the ring groove 5c. 5d and a nitrogen flow passage 5e guided from the connector 15 to one place in the annular groove 5c, whereby the punch guide 6 is pushed up by the compressed air between the N membrane walls 5b. In this state, the polymer is polymerized on the punch base 5 without contact.

(b) First positioning mechanism In this mechanism, the punch has an inverted conical retaining hole 6c formed on both sides of the upper surface of the id 6, and each insertion hole 7 of the punch cover 7.
a and a compression spring 17 that presses down and biases the centering steel balls 8 that fall into the centering holes 6c and fit into each of the engagement holes 6c.
, a spring receiving screw 18 and its lock nut 19 , which urges the punch guide 6 to move to the center of the punch cover 7 , that is, the center of the punch base 5 .

(C) Second positioning mechanism This mechanism is inserted into the above-mentioned projecting portions 6b protruding in all directions of the punch guide 60 and into the elongated holes 5f in the chordal direction of the peripheral wall 5a of the punch base 5, and A pair of compression springs 20 that pinch the protruding portion 6b from both sides, and a screw lid 21 that receives the springs 20.
As a result, the punch guide 6 is biased to move to the center position of the punch base 5.

Next, the holding of the Gui hat type 4 (h construction will be described with reference to Figs. 1, 2, and 9 to 14).

On the upper surface of the trapezoidal tap base 3, which has a through hole in the center and has both sides cut in parallel, there is a die base 22 that has a through hole in the center and is made of an equiplanar thick plate. is fixed to the tap base 3 by a fixing means (not shown) with the boss part fitted into the center hole of the tap base 3, and
The die base 22 has a peripheral wall 22a and an outer boxwood 22b erected in the same way as the punch base 5 described above. A connector 23 is provided protrudingly.

Furthermore, )=J! of die base 22! A die holder 24 having a diameter slightly smaller than the inner circumference is fitted on the upper surface of the inner circumference of the die holder 22a, and the die holder 24, like the punch guide 6 described above, has four sides v'' in the lower half of the die holder 24. I8!I'
An overhanging portion 24a is provided protrudingly from lh[.

Therefore, the link-shaped die cover 25 is in contact with a slight gap between the upper surface of the die base /mk22a and the upper surface of the protruding part 24a of the gou holder, and the inner periphery of the die cover 25 is slightly The cover 25 circumscribes the outer periphery of the die mold holder 24 with a clearance, and is fixed to the outer periphery flange 22b of the die base 22 by a fixing means (not shown).

Note that insertion holes 25a for centering steel balls 26 pass through both sides of the die cover 25, similarly to the punch cover 7 described above.

Further, the base of a U-shaped leaf spring 27 is fixed to the upper surface of one half of the die cover 25, that is, the upper half of FIG. The tip of
Each steel ball 26 is pushed out and biased via a push pin 29.

Next, the Nigui gold M4 is fitted into the stepped part at the center of the upper surface of the Gui holder 24, and then fixed to the holder 2 by a fixing means (not shown).
4, and in the center of the upper surface of the punch mold 4, there is a rectangular part 3 facing the cutter 12 of the punch mold 2.
1 is formed.

On the four sides of this side 31, there are two pairs of pin holes 3 into which a pair of pilot pins 13 of the punch die 2 are selectively inserted.
2 is being carried around.

By the way, the moving mechanism and positioning mechanism in this holding structure are the same as those in the case of the punch die 2 described above, and are as follows: The high-pressure air that has flowed into the ring (b) and 22c passes through four nozzle holes 2.
2d and the four arcuate grooves 22e on the upper surface of the die base 22, the thin film space 22f of the four-and-a-half fan-shaped lower part is filled with the thin film space 22f, whereby the gouly holder 24 can be attached to the die base 2 without contact.
Polymerized onto 2.

<b) An inverted circular fIL-shaped retaining hole 24b is formed on the upper surface of the die holder projecting portion 24a that is in contact with the bottom surface of each steel ball 26 of the pair of *1 positioning mechanism, and each copper ball 26 is inserted into the pass. But this is K more Gui Holder 24
is urged to move to the center position of the die base 22.

(c) The protruding portion 24a of the second positioning device (Ze♂) holder 24 is pressed from both sides by a pair of pressure springs 34 received by the screw cap 33,
As a result, the cylindrical holder 24 is similarly urged to move to the central position.

In the press machine of the embodiment having such a VC configuration,
The punch guide 6 that guides the horizontal and horizontal positions of the punch mold 2 and the guide holder 24 that holds the die mold 4 are suspended on the bases 5 and 22, respectively, within the clearance within the horizontal plane. In addition to being able to move without friction, under no-load conditions, the center position of each base 5, 22 is moved at a moving angle of 6Aδ due to the spring elasticity, so there is no possibility of machining dimensional errors in the previous process of the workpiece W or the die mold 4. Due to the positioning error of the upper work W, the pilot pin 13 and the reference position c of the work W
, d, and the respective axis positions of the pin hole 32 of the die, the movement of the dies 2 and 4 to follow the adjustment will prevent the workpiece W from moving too far. Can be punched out.

(Effects) As described above, according to the press machine of the present invention, at least one mold of both the punch mold and the guide mold holding device is fixed by the moving mechanism! When the mold is floated and held on the base of the mold, the positioning mechanism of the mold is used to force the mold to move to a predetermined position on the base.
During the punching operation of the workpiece, the punching position is aligned smoothly and precisely, which has the effect of increasing the processing axis of the processing machine.

Note that the positioning mechanism may be only one of the first and second positioning mechanisms. Furthermore, the present invention is not limited to punching.

[Brief explanation of drawings]

FIG. 1 is a plan view of a press machine equipped with a mold holding device in a sheet metal processing machine showing an embodiment of the present invention, FIG. 2 is a side view of the same, and FIG. 4 and 5 are cross-sectional views taken along the line ■-■ and y-va in FIG. 1, and FIGS.
l line and ■−■1&! The plan sectional view in FIG. 8 is
Figure 3 is a bottom view, Figure 9 is a top view of the lower half of Figure 2,
FIG. 10 is a sectional view of the same side, and FIG. 11 is an arrow X in FIG. 2.
FIG. 12 is a front sectional view of the lower half of
Figures 13 and 14 show the ■-■ line and XW-X? of the whistle diagram 10. FIG. 15, a plan cross-sectional view taken along the V line, is a diagram showing an example of a product plate obtained by pressing a processed plate. W... Workpiece as a plate to be processed, 2... Punch mold,
4... Gui mold, 5... Punch base, 22 - Gui base, 5b, 22f... Thin film space (predetermined gap)
, 5d, 22d...Nozzle hole, 6... Punch guide, 6b, 24a-projection, (5c, 24
b - Engagement hole, 8.26... Steel ball, 12... Cutting blade,
17.27...Spring, 20.34...Compression spring, 2
4...Guiholder, 31...this way. Patent Applicant: Anritsu Electric Co., Ltd. No. 60 RI Name breath machine 3 correction? Relationship with the patent applicant's case 4th agent for patent applicant
Month 27H) 6 Number of inventions increased due to amendment 07
Target of correction

Claims (2)

[Claims] (1) A press equipped with a punch mold and a die mold for press working; and a punch mold holding device and a die mold holding device that hold the punch mold and die mold in predetermined positions, respectively. In the machine; holding one or both of the punch mold holding device and the die mold holding device movably within a predetermined movement range in a plane substantially perpendicular to the press direction; 1. A press machine, characterized in that the press is movably positioned by a support device comprising a moving mechanism that moves the press, and a positioning mechanism that positions the press at a predetermined position within the movement range. (2) Claim (1) characterized in that the moving mechanism is provided with a predetermined gap for facilitating movement of the mold holding device by supplying high-pressure air.
Press machine described in section.