JP3304583B2 - Lubrication device for punch holder hole and punch holder peripheral surface - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating device for a punch holder hole and a peripheral surface of a punch holder in a turret punch press.

[0002]

2. Description of the Related Art In recent years, the lubrication of a punch press has been changed from oil to grease, and the adhesion of oil to a work has been improved, and the workability of a worker and the environment of a factory have been improved. However, at present, the injection of grease into the peripheral surface of the punch holder in the turret punch press is performed by an operator manually applying grease to the peripheral surface of the punch holder.

[0003]

Therefore, there is a problem that not only is the grease replenishing operation very troublesome, but also the operator's hands are stained.

An object of the present invention is to provide a punch holder hole and a lubricating device for a punch holder peripheral surface which can easily supply lubricating oil to the peripheral surface of the punch holder without soiling the hands of an operator.

[0005]

A lubricating device for a punch holder hole and a peripheral surface of a punch holder according to the present invention includes a turret having a plurality of punch holder holes into which a punch tool is fitted.
An oil supply hole is provided from the outer peripheral surface to the punch holder hole, and a lubricating oil injection nozzle inserted into the oil supply hole is provided.

[0006] Lubricating apparatus according to claim 1, wherein is obtained by a removably lubricant injection nozzle to refuel before Symbol oil supply hole in conjunction with the indexing pin. The index pin fits into an index pin fitting hole provided on the outer peripheral surface of the turret to fix the index angle of the turret, and is driven by a pin insertion / removal device. The lubricating oil injection nozzle is provided in this pin insertion / removal device.

[0007]

According to a second aspect of the present invention, there is provided a lubricating apparatus comprising: a turret having a plurality of punch holder holes into which a punch tool is fitted;
Providing an oil supply hole from the outer peripheral surface to the punch holder hole,
This oil supply hole shall be connected to the punch holder hole from the index pin fitting hole provided on the outer peripheral surface of the turret,
The lubricating oil injection nozzle is provided on an index pin that is removably fitted into the index pin fitting hole by driving the pin insertion / removal device.

The lubricating device according to claim 3 is applied to a turret in which punch holder holes into which a punch tool is fitted are arranged in multiple rows in a circumferential direction. The turret is provided with an oil supply hole communicating with the punch holder holes in the outer peripheral row from the outer peripheral surface of the turret and a communication oil supply hole communicating from the punch holder holes in the outer peripheral row to the punch holder holes in the inner peripheral row.

[0010]

According to the lubricating device of the present invention , a lubricating oil injection nozzle can be inserted into an oil supply hole provided on the outer peripheral surface of the turret, and lubricating oil such as grease can be injected into the punch holder hole.
You.

According to the first aspect of the invention, the lubricating oil injection nozzle is inserted into the lubrication hole in conjunction with the fitting operation of the index pin to the turret performed every time the turret is indexed, and the lubricating oil injection nozzle is inserted into the punch holder hole. Refueling is performed.

[0012]

In the case of the second aspect, when the index pin is fitted, the lubricating oil is injected into the oil supply hole from the lubricating oil injection nozzle provided on the index pin.

According to the third aspect of the present invention, the lubricating oil injected from the oil supply holes on the outer peripheral surface of the turret into the punch holder holes in the outer peripheral row passes through the punch holder holes and the communicating oil supply holes, and then the punch holder holes in the inner peripheral row. Is supplied up to.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a side view of a turret punch press equipped with a punch holder hole and a lubricating device for a peripheral surface of the punch holder, and FIG. 4 is a longitudinal sectional view of a main part thereof. An upper turret 2 and a lower turret 3 are provided on an upper frame portion 1a and a lower frame portion 1b of the C-shaped frame 1.
Are installed coaxially with each other. That is, the upper turret 2 is rotatably provided on the upper frame portion 1a of the C-shaped frame 1 via the rotary shaft 4, and the lower turret 3 is provided rotatably on the lower frame portion 1b via the rotary shaft 5. ing. The upper turret 2 has a plurality of punch holder holes 7 into which the punch tools 6 are fitted, and the lower turret 3 has a plurality of die tools corresponding to the respective punch tools 6 similarly arranged on the circumference. It was done. The punch tool 6 and the die tool have a punch and a die installed on a punch holder and a die holder, respectively. The punch tool 6 is fitted into the punch holder hole 7 at the punch holder portion so as to be vertically movable.

The indexing drive mechanism 8 for the upper and lower turrets 2 and 3 comprises:
The drive of the common indexing motor 9 is distributed to the upper and lower turrets 2 and 3 and transmitted by the chain mechanisms 10 and 11. Index pin fitting holes 12 and 13 are provided on the outer peripheral surfaces of the upper and lower turrets 2 and 3 in correspondence with the positions where the punch holder holes 7 are formed, so that the index pins 14 and 15 can be fitted. Thus, the accuracy of the index angles of the upper and lower turrets 2 and 3 is improved. Each of the index pins 14 and 15 is a pin insertion / removal device 1 including a hydraulic cylinder or an air cylinder installed on the frame 1.
The index pins 6 and 17 are driven to be inserted into and removed from the index pin fitting holes 12 and 13. The punch drive mechanism 18 raises and lowers the punch tool 6 by the ram 19 at the punch position P, and is installed on the upper frame portion 1a. The plate material W is gripped by the work holder 20 and sent to the punch position P on the table 21.

The upper turret 2 is provided with an oil supply hole 22 extending from the outer peripheral surface to the punch holder hole 7 in the radial direction as shown in the perspective view and the vertical sectional view in FIGS. 1 (A) and 1 (B). On the inner peripheral surface of the punch holder hole 7, a lubricating oil reservoir groove 23 having an oil supply hole 22 opened on the bottom surface is formed. The inlet portion of the oil supply hole 22 is formed to have a large diameter, and the grease nipple 2 is formed.
2a is mounted. In the example of FIG. 1, the lubricating oil sump groove 23 is formed in a ring shape of one circumference, but is not limited to this, and as shown in FIG.
May be connected by one or a plurality of vertical grooves 23b, and the oil supply hole 22 may be communicated with one ring-shaped groove 23a. Alternatively, as shown in FIG.
3 may be formed in a continuous spiral shape.

According to the lubricating device having the above-described structure, the grease nipple 2 of the oil supply hole 22 opened on the outer peripheral surface of the upper turret 2
From 2a, lubricating oil such as grease can be injected using a lubricating oil injection nozzle (not shown) such as a grease gun. The injected grease flows through the lubricating oil sump groove 2 through the lubrication hole 22.
3 and spread all over the inside of the punch holder hole 7. The grease stored in the lubricating oil storage groove 23 is uniformly applied to the holder peripheral surface of the punch tool 6 as the punch tool 6 moves up and down during punching. As described above, grease is easily applied to the punch tool 6 by the injection operation from the outer peripheral surface of the upper turret 2, and therefore, the hands of the operator are prevented from being stained.

FIG. 5 is a longitudinal sectional view showing a main part of a second embodiment of the present invention. This embodiment includes a pin insertion / removal device 16 for inserting / removing the index pin 14 on the upper turret 2 side.
The lubricating oil injection nozzle 24 is provided to be inserted into and removed from the grease nipple 22a of the oil supply hole 22. The lubricating oil injection nozzle 24 is attached to the index pin 14 via a nozzle attachment member 35, and is connected to a grease pump (not shown) via a flexible tube. Other configurations are the same as those of the first embodiment.

In this embodiment, at the index position, the lubricating oil is driven by the operation of the pin insertion / removal device 16 so that the index pin 14 is fitted into the index pin fitting hole 12 on the outer peripheral surface of the upper turret 2. The injection nozzle 14 is automatically inserted into the grease nipple 22a of the oil supply hole 22. In this case, the upper turret 2 by the pin insertion / removal device 16 at the indexing position
Lubrication oil injection nozzle 24 to lubrication hole 2
2 may be filled with grease as a lubricating oil, or 1 every time the rotation lock is repeated a predetermined number of times.
Each time, grease may be injected.

FIG. 6 is a longitudinal sectional view showing a main part of a third embodiment of the present invention. In this embodiment, the lubrication hole 22 is formed so as to communicate with the punch holder hole 7 from the bottom surface inside the index pin fitting hole 12, and the index pin 1
4 has a lubricating oil injection nozzle 24 protruding from the tip thereof. The lubricating oil injection nozzle 24 can be freely protruded and retracted with respect to the index pin 14, and is urged to protrude by a spring member (not shown). The oil supply path 24a communicating with the lubricating oil injection nozzle 24 is formed such that the piston rod of the hydraulic cylinder constituting the pin insertion / removal device 16 penetrates both ends of the cylinder body, and is formed to penetrate the piston rod. is there. Other configurations are the same as in the previous embodiment.

In this embodiment, the index pin 14 is inserted into the index pin fitting hole 12 by driving the pin insertion / removal device 16.
Is to connect the lubricating oil injection nozzle 24 to the oil supply hole 22 as it is, thereby simplifying the control of lubricating oil supply. Further, since the oil supply hole 22 is opened from the index pin fitting hole 12, the oil supply hole 22 can be short, and the processing of the oil supply hole 22 is easy. The index pin 14 is a normal one having no such lubricating oil injection nozzle 24, and the lubricating oil is injected by a lubricating oil injection nozzle arranged at another position or a hand-held lubricating oil injection nozzle. You may do it. Even in this case, the effect of easy processing of the oil supply hole 22 can be obtained.

FIGS. 7A and 7B are a longitudinal sectional view and a plan view showing a main part of a fourth embodiment of the present invention. This embodiment is applied to an upper turret 2 in which a plurality of punch holder holes 7A and 7B into which a punch tool 6 is fitted are arranged in two rows inside and outside in the circumferential direction. In this example, from the inside of the index pin fitting hole 12 to the punch holder holes 7A in the outer peripheral row.
And a communication oil supply hole 22B communicating from the punch holder hole 7A in the outer row to the punch holder hole 7B in the inner row is provided, and each of the punch holder holes 7A, 7B is provided.
The lubricating oil reservoir groove 23A communicating with the oil supply hole 22A and the lubricating oil reservoir groove 2 communicating with the communication oil supply hole 22B
3B. The use of the lubricating oil injection nozzle 24 as the index pin 14 is the same as in the embodiment of FIG. Other configurations are the same as in the previous embodiment.

In this embodiment, when lubricating oil grease is injected from the lubricating oil injection nozzle 24 into the oil supply hole 22A,
Grease is supplied from the oil supply hole 22A to the punch holder holes 7 in the outer peripheral row.
A is supplied to the lubricating oil sump groove 23A on the inner peripheral surface of A, and the grease further passes through the communication oil supply hole 22B, and the lubricating oil sump groove 7B on the inner peripheral surface of the punch holder hole 7B in the inner peripheral row.
Is also supplied. The opening of the oil supply hole 22A may be provided at a position different from that of the index pin fitting hole 12. In this embodiment, the case where the punch holder holes are arranged in two rows has been described. However, the present invention can be similarly applied to the case where the punch holder holes are arranged in three or more rows or where the number of arrangement is partially different.

FIG. 8 shows an injection port 32 a on the upper surface of the upper turret 2.
An example is shown in which an oil supply hole 32 is formed so as to open. In this case, the oil supply hole 32 includes a vertical hole portion 32b extending downward from the inlet 32a, and a plurality of upper and lower horizontal hole portions 32c communicating with the vertical hole portion 32b and communicating with the punch holder hole 7. Each of the horizontal holes 32c communicates with a corresponding one of the ring-shaped lubricating oil reservoir grooves 33 formed on the inner peripheral surface of the punch holder hole 7 in a plurality of upper and lower stages corresponding to these.
In order to facilitate manufacture, the lateral hole 32c is formed so as to penetrate from the outer peripheral surface of the upper turret 2 to the punch holder hole 7, and then the opening of the outer peripheral surface of the upper turret 2 is covered with the cover member 34. It is constituted by closing with. A grease nipple (not shown) is provided in the inlet 32a.

In the case of this configuration, the lubricating oil can be supplied by the lubricating oil injection nozzle from the injection port 32a opened on the upper surface of the upper turret 2. Therefore, also in this case, refueling can be easily performed without soiling the hand, and refueling can be automated.

[0027]

Lubrication system for the Effects of the Invention] punch holder holes and punch holder peripheral surface of the invention, provided with an oil supply hole leading to the punch holder hole from the outer peripheral surface to the turret, to the oil supply hole
Due to the provision of a lubricating oil injection nozzle to be inserted, only injection operation by the lubricating oil injection <br/> Nozzle, can easily supply the lubricating oil such as grease to the entire periphery of each punch holder, also dirty hands Lubricating oil can be supplied without the need. Further, automation of lubricating oil supply can be easily achieved.

In the case of the first aspect, since the lubricating oil injection nozzle is provided in the index pin insertion / removal device that fits into the index pin fitting hole on the outer peripheral surface of the turret, the lubricating oil injection nozzle is interlocked with the index pin fitting operation. Thus, injection by the lubricating oil injection nozzle can be automatically performed. Therefore, it is not necessary to provide a dedicated insertion / removal driving device for the lubricating oil injection nozzle while achieving automatic lubrication, and the configuration is simplified and the control is facilitated.

[0029]

In the case of the second aspect of the present invention, since the lubricating oil injection nozzle is provided on the index pin, the lubricating oil can be injected along with the fitting operation of the index pin in this case as well. Automatic lubrication can be performed without the need for a system.

According to the third aspect of the present invention, even though the turret has punch holder holes arranged in multiple rows, lubricating oil is supplied to the punch holder holes of each row at the same indexing position by injection from one oil supply hole. Can be supplied, and also in this case, lubricating oil can be supplied easily.

[Brief description of the drawings]

FIG. 1 is a partial perspective view and a sectional view of a turret equipped with a lubricating device for a punch holder hole and a peripheral surface of a punch holder according to an embodiment of the present invention.

FIGS. 2A and 2B are perspective views each showing a modified example of a lubricating oil reservoir groove of the lubricating device.

FIG. 3 is a side view of a punch press equipped with the punch holder hole lubrication device.

FIG. 4 is an enlarged cutaway side view of a turret supporting portion of the punch press.

FIG. 5 is a cross-sectional view of a lubricating device for a punch holder hole and a peripheral surface of a punch holder according to another embodiment of the present invention.

FIG. 6 is a sectional view of a lubricating device for a punch holder hole and a peripheral surface of a punch holder according to still another embodiment of the present invention.

FIG. 7 is a sectional view and a partial plan view of a lubricating device for a punch holder hole and a punch holder peripheral surface according to still another embodiment of the present invention.

FIG. 8 is a sectional view and a partial plan view of a proposal example of a lubricating device for a punch holder hole and a peripheral surface of the punch holder.

[Explanation of symbols]

2 Upper turret, 6 Punch tool, 7, 7A, 7B Punch holder hole, 12 Index pin fitting hole, 14
Index pin, 16 ... Pin insertion / removal device, 22, 22A
... Oil supply hole, 22B ... Communication oil supply hole, 23, 23A, 23B
... Lubricating oil reservoir groove, 24 ... Lubricating oil injection nozzle

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B21D 37/18 B21D 28/36 B21D 28/14 B21D 28/34

Claims (3)

(57) [Claims] To 1. A turret having a plurality of punch holder hole for fitting the punch tool, provided with an oil supply hole communicating with the punch holder hole from the outer peripheral surface, set the lubricating oil injection nozzle to be inserted into the oil supply hole, Set on the outer surface of the turret
Insert the index pin into the
A lubricating oil injection nozzle is provided with a pin insertion / removal device for insertion / removal.
Can be inserted and removed in conjunction with the index pin.
Pa provided in the apparatus Nchihoruda holes and the lubricating device to the punch holder periphery. 2. A turret having a plurality of punch holder holes into which a punch tool is fitted, provided with an oil supply hole communicating from the outer peripheral surface to the punch holder hole, and the oil supply hole is fitted with an index pin provided on the outer peripheral surface of the turret. The punch hole shall be connected to the punch holder hole from the mating hole. Lubrication device to. 3. A turret having a plurality of rows of punch holder holes into which a punch tool is fitted is arranged in a circumferential direction, a lubrication hole communicating with a punch holder hole of an outer peripheral row from an outer peripheral surface of the turret, and a punch holder hole of an outer peripheral row. A lubricating device for a punch holder hole and a peripheral surface of a punch holder provided with a communication oil supply hole communicating with the punch holder holes in the inner peripheral row.