JPH0539773Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a mold rotation device in a punch press machine, that is, an angle indexing mechanism (index mechanism) for rotating the punch and die to desired angular positions. It is.

[Conventional technology]

In general, a punch press machine is a machine tool for sheet metal processing that performs drilling, forming, etc. on steel plates, etc., and includes a punch for drilling, etc., and a die as a holder for the punch.

In such punch press machines, turret type punch press machines have conventionally been used to improve machining efficiency. This turret type punch press machine has multiple types of punches and dies arranged in the upper and lower turrets, respectively, and these are sequentially positioned at the center of the punch according to a preset work process, and then driven by an appropriate means. It is connected to equipment to perform processing.

Furthermore, in the turret punch press machine, various types of processing can be performed with a small number of tools.
Some punch holders and die holders that hold punches and dies are provided with index mechanisms. By providing such an index mechanism,
For example, when drilling two rectangular holes with the same vertical and horizontal dimensions but at different angles of 90°, conventionally two sets of punches and dies were required, but the process can now be performed with one set of punches and die. can.

[Problem that the invention attempts to solve]

In the conventional indexing mechanism, a worm wheel is formed on the die holder, and a worm that meshes with the worm wheel and its rotating shaft are arranged on the upper surface of the lower turret. For this reason, chips etc. tend to adhere to the worm and worm gear exposed on the top surface of the lower turret.
There was a problem that chips generated by the punching operation entered the meshing portion between the two, damaging the tooth surfaces and causing rotational failure.

This invention is intended to solve the above problems, and aims to provide a mold rotating device that can prevent foreign matter from entering the index mechanism.

[Means to solve the problem]

In order to achieve the above-mentioned purpose, this invention includes a reduction gear for rotating the die holder inside a case and fitting it into the lower turret, and an input shaft to the reduction gear for rotation driving is placed on the top surface of the lower turret. At the same time,
The output of the rotary drive reducer is transmitted to the die holder via a spur gear on the lower surface side of the lower turret.

[Effect]

With the above configuration, the input shaft of the drive reducer is placed in the idle space on the upper surface of the lower turret, and the inner case of the rotary drive reducer fitted in the lower turret itself acts as a dustproof cover for the spur gear. do. Further, the spur gear for transmitting rotational force to the die holder is thinner than the worm wheel, and acts to reduce the volume of the rotary drive reducer.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings. First, the schematic structure of the entire punch press machine will be explained with reference to FIG. Punch press machine 1 of this embodiment
It is mainly composed of a lower frame 2, an upper frame 3, and a throat part 4 that supports these at the rear.As will be described in detail later, the lower frame 2 also has a lower turret that accommodates a plurality of dies. An upper frame 3 is provided with an upper turret for accommodating a plurality of punches. Guide rails 5 and 6 are disposed at both left and right ends of the lower frame 2, and a carriage 7 and left and right movable tables 8,
9 is movable along the guide rails 5 and 6. Further, a fixed table 10 is provided between the left and right movable tables 8 and 9, and a plate material 11 placed on each of these tables is provided.
(indicated by the two-dot chain line in the figure) is held by a work holder that is slidably attached to the carriage 7.

Next, referring to FIG. 1, the rotating device portion of the punch and die will be explained in detail. As mentioned above, the upper frame 3 is provided with a disc-shaped attachment turret 20, and a punch holder device portion 20a is formed at the outer peripheral tip of this attuplet turret 20. The punch holder mounting portion 20a is attached to the rotating member 2
1 is attached, and a punch holder 22 is fixed to this rotating member 21 with a key 23. A ram (not shown) that is raised and lowered by a crank mechanism or the like is provided above the punch holder 22, and the punch holder 22 is attached to this ram. A punch 24 and a stripper 25 are attached to the lower end of the punch holder 22.

In addition, an index mechanism attachment part 20b is formed inside the punch holder attachment part 20a in the attenuator 20, and an index mechanism for indexing the angle of the punch 24 is attached to this index mechanism attachment part 20b. has been done. That is, the index mechanism mounting section 20
A support member 36 is fixed to b, and this support member 3
The outer casing of the speed reducer 26 is fixed to 6. The reduction gear 26 is constituted by a well-known planetary gear mechanism, and has a reduction ratio set to, for example, 1:36. An output spur gear 28 is fixed to the output shaft 27 of the reduction gear 26, and this output spur gear 28 meshes with an angle indexing spur gear 29 fixed to the lower end of the rotating member 21. Further, the input shaft 30 of the reduction gear 26 is rotatably supported by the support member 36, and an input bevel gear 31 is fixed to the tip thereof. Input bevel gear 3
1 is the bevel gears 32 and 33 of the transmission system and the transmission shaft 34
It is connected to the drive bevel gear 35 via.

On the other hand, the lower frame 2 is equipped with Atsupataretsu 20.
A similar disk-shaped lower turret 40 is provided, and a die holder mounting portion 40a is formed at the outer peripheral tip of the lower turret 40. A die holder 41 is attached to the die holder attachment part 40a, and a die 42 is held on the upper part of this die holder 41.

Also, like the upper turret, this lower turret 40 is also formed with an index mechanism mounting part 40b.
, a reduction gear 46 consisting of a planetary gear mechanism similar to that described above.
The outer casing of is fixed. Further, an output spur gear 48 is fixed to the output shaft 47 of the reduction gear 46, and this output spur gear 48 is an angle indexing spur gear 4 fixed to the lower end of the die holder 41.
It meshes with 9. Input shaft 5 of the reduction gear 46
0, an input bevel gear 51 is fixed to the input bevel gear 51, and this input bevel gear 51 is rotatably supported by a support member 56 fixed to the upper surface of the reduction gear 46. Further, the input bevel gear 51 is connected to the drive bevel gear 55 via the transmission system bevel gears 52 and 53 and the transmission shaft 54, as described above. This driving bevel gear 55 and the driving bevel gear 3 on the atupataret 20 side
5 is driven by a servo motor or the like (not shown).

Next, the effects will be explained.

When performing angle determination, a drive source, such as a servo motor, is rotated by a predetermined value. Then, the drive bevel gears 35 and 55 rotate, and this rotation is input to the index mechanism via a transmission system consisting of the bevel gears 33, 32, 53, 52, etc. The rotation from the transmission system is transmitted through each planetary gear type reducer 26, 4.
6, where it is decelerated to, for example, 1/36 and output. The output of the reducer 26, 46 is the output spur gear 28, 48 and the angle indexing spur gear 2.
9, 49 to the punch holder 22, die holder 41, and thereby each holder 22, 4
1 is rotation by a predetermined angle.

In this embodiment having such a configuration, the reduction section of the index mechanism is configured by a reduction gear using a planetary gear mechanism, so the meshing section of the gears is covered with a casing or the like, and the conventional worm and Unlike reduction parts that use worm wheels, sprockets, and chains, there is no intrusion of foreign substances such as chips, and damage to tooth surfaces can be prevented.
In addition, in the conventional worm and worm wheel system, the meshing part was placed particularly close to each holder, making it impossible to avoid the intrusion of chips, etc., but in the case of the planetary gear system as in this example, By using a speed reducer, it becomes possible to arrange the gear part away from the holder, and in addition to the above-mentioned reason, it is possible to more reliably prevent the intrusion of chips and the like.

In addition, the reducers 26 and 46 are connected to each turret 20 and 4.
Since the output spur gears 28 and 48 are directly meshed with the angle indexing gears 29 and 49 of the punch holder 22 and die holder 41, respectively, a chain or the like is not required and angle positioning can be performed with high precision. be able to.

Furthermore, in the conventional worm and ohm wheel system, it is possible to perform angle indexing for two stages of the turret at the same time, but in this embodiment, the output spur gears 28, 48 of the reducers 26, 46,
By meshing the spur gears for angle indexing of a plurality of stages of punches and die holders, it is possible to perform angle indexing of, for example, four stages of punches and dies at the same time, and it is also possible to improve work efficiency.

In the above embodiment, the present invention was applied to a turret punch press machine, but the present invention can be applied to any punch press machine that determines the angle of punches and dies, and has the same effect as the above embodiment. play.

In addition, in the above embodiment, a planetary gear type reducer was used for both the punch and die sides, but since the intrusion of foreign substances such as chips is particularly noticeable on the die side of the lower turret, it may be applied only to this die side. good.

[Effect of idea]

As described above, according to the mold rotating device of the turret punch press machine of the present invention, the input shaft of the drive reducer is placed using the idle space on the upper surface of the lower turret, but the input shaft of the drive reducer is placed. It is possible to prevent chips from entering the deceleration output section without using a special dustproof cover or the like.
That is, by effectively utilizing the structure of the case housing the rotary drive reducer and the structure of the turret, the case is fitted onto the turret to guide the deceleration output to the lower surface of the turret, and the fitting formed on the turret is By blocking the hole with the case of the reducer,
It was possible to prevent chips from entering the die holder due to deceleration output, and a highly reliable angle indexing mechanism could be easily constructed. Furthermore, by transmitting the deceleration output to the die holder via the spur gear, the entire structure could be made compact while guiding the deceleration output to the lower surface of the turret.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional configuration diagram showing an angle indexing mechanism of a punch press machine according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the entire punch press machine. 20...Atsupataretsu, 22...Punch holder, 24...Punch, 26,46...Planetary gear type reducer, 28,48...Output spur gear, 29,4
9... Spur gear for angle indexing.

Claims (1)

[Scope of utility model registration request] The rotary drive reducer for the die holder is housed in a case and fitted to the lower turret, and the input shaft to the rotary drive reducer is placed on the top surface of the lower turret, and the output of the rotary drive reducer is connected to the lower turret. A mold rotation device of a punch press machine, which is transmitted to the die holder via a spur gear on the lower surface side of the turret.