JPH06246369A - Punch press - Google Patents

Abstract

PURPOSE:To make a sliding member to the irreducible minimum capacity, to contrive reduction in cost, to facilitate the adjustment of space for a pressure receiving part and to reduce man-hour for assembly. CONSTITUTION:A ram guide 13 equipped with a punch P is perpendicularly arranged from an upper frame 9 through a sliding member 11, the flange part 17a of a ram base 17 equipped with a ram cylinder 15 is adjusted and attached, with a slight space maintained, between the ram guide 13 and the upper frame 9, the ram base 17 is provided on the ram guide 13 freely movably up and down against the ram guide 13, and simultaneously a die guide 25 is provided from a lower frame 5 through a sliding member 27. The flange part 23a of a die base 23 which is provided with a die D between the die guide 25 and the lower frame 5 is adjusted and attached with a slight space maintained; and the die base 23 is provided on the lower frame 5 freely movably up and down against the die guide 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching press, and more particularly to a punching press in which a punch and a die are movable in the left and right directions.

[0002]

2. Description of the Related Art Conventionally, a punching press in which a punch and a die are movable in the left-right direction is slidable with respect to upper and lower frames, for example, a sliding guide member or LM.
A guide is provided, and the load at the time of punching is directly received by the upper and lower frames via the sliding member.

Further, by utilizing the bending of the LM guide,
The upper and lower frames receive the load during punching. More specifically, referring to FIG. 3, the ram base 101 is vertically installed on the upper frame 105 via the LM guide as the sliding member 103, and the LM guide as the sliding member 103 is provided on the lower frame 107. A die base 109 is provided via the die base 109.

In the pressure receiving portion A shown in FIG. 3, the L1 dimension of the ram base 101 is slightly smaller than the height h1 of the sliding member 103, that is, the pressure receiving portion A on the upper surface of the ram base 101 and the upper frame 105. It is possible to move with a slight gap from the lower surface of the. The ram base 101
As a drive system of the drive motor, a screw member 113 that is screwed into a nut member 111 provided on the ram base 101 is provided extending in the Y-axis direction (direction orthogonal to the drawing in FIG. 3). It is connected. Further, a ram cylinder 115 is provided on the ram base 101, and a striker 117 is movably suspended from a piston rod of the ram cylinder 115. Further, a punch holder 119 equipped with a punch P is mounted below the ram base 101.

On the other hand, in the pressure receiving portion B, the L2 dimension of the die base 109 is slightly smaller than the height h2 of the sliding member 103,
That is, the pressure receiving portion B on the lower surface of the die base 109 and the upper surface of the lower frame 107 can be moved with a slight gap. As the drive system of the die base 109, similarly to the drive system of the ram base 101 described above, a nut member 111 is vertically provided, and a screw member 113 screwed to the nut member 111 is provided extending in the Y-axis direction. , Is connected to a drive motor (not shown). A die holder 121 having a die D is mounted on the die base 109.

Therefore, when a strong load is applied to the punch P and the die D during punching, the LM guide, which is the upper and lower sliding members 103, has a force of several 10% (however, L
It is bent within the allowable load of the M guide) and bends in the vertical direction. Due to this bending, the gap between the pressure receiving portions A and B becomes zero, and the load more than that becomes the upper and lower frames 105 and 107.
Take it at. When the punching process is completed, the elastic return of the sliding member 103 causes a predetermined gap between the pressure receiving portions A and B to allow movement.

[0007]

By the way, in the above-mentioned conventional punching press, the LM guide, which is a sliding member, directly receives the load at the time of punching, and the LM guide is used.
The guide needs to have a rated capacity that is several times the press load, and the cost of the guide becomes very high. Further, in the case of the slide guide member, there is no problem in capacity, but there is a problem that the frictional force during movement is large and the moving speed is small.

Further, in the method of utilizing the bending of the sliding member 103 and receiving the load during punching by the upper and lower frames 105 and 107, the heights h1 and h2 of the LM guide, which is the sliding member 103, and the dimensions thereof. A gap is provided between the pressure receiving portions A and B due to the dimensional difference between L1 and L2, and the dimensions are made by machining the dimensions of L1 and L2 according to the actual product.
Further, the heights h1 and h2 of the LM guide and the dimensions of L1 and L2 are measured and the gaps are provided in combination, and both methods require man-hours and require high-level processing technology, which cannot reduce the cost. There was a problem.

In order to improve the above-mentioned problems, an object of the present invention is to reduce the cost by using a sliding member having a minimum necessary capacity, and to easily adjust the clearance of the pressure receiving portion to reduce the number of assembling steps. It is to provide a punching press designed.

[0010]

In order to achieve the above object, the present invention is a punching press in which a punch and a die are provided so as to be movable in the left-right direction, and the punch is pushed from an upper frame via a sliding member. The ram guide provided is hung vertically,
A flange portion of a ram base provided with a ram cylinder is adjusted and mounted between the ram guide and the upper frame with a slight gap, and the ram base is provided on the ram guide so as to be vertically movable with respect to the ram guide. A die guide is provided from the lower frame through a sliding member, and a flange portion of a die base provided with a die is adjusted and mounted with a slight gap between the die guide and the lower frame, and the die base is used as a die guide. On the other hand, the punching press was constructed by being provided on the lower frame so as to be vertically movable.

[0011]

By adopting the punching press of the present invention, the flange portion of the ram base provided with the ram cylinder is mounted between the ram guide and the upper frame with a slight gap, and the die guide and the lower frame are attached. The flange part of the die base equipped with the die is attached with a slight gap. The ram guide is vertically provided on the upper frame via a sliding member, and the die guide is provided on the lower frame via the sliding member.

The load generated during the punching process is such that the punch side pushes up the ram base from the punch via the ram silane and is received by the upper frame. Further, since the die base equipped with the die is lowered and the lower frame receives the pressure on the die side, it is not necessary to receive the load generated at the punching process by the sliding member.

[0013]

Embodiments of the present invention will be described in detail below with reference to the drawings. In order to facilitate understanding, the overall structure of the punching press will be described first.

Referring to FIG. 2, punching press 1
Is composed of a gate-shaped frame 3, and the upper frame 9 is integrally combined with the upper part of columns 7 standing upright on both sides of the lower frame 5.
Then, on the lower surface of the upper frame 9, a punch, which is a sliding member 11 extending in the Y-axis direction (the horizontal direction in FIG. 2),
The LM guide for the ram is provided and the sliding member 11
The ram guide 13 locked to the
A ram base 17 supporting a ram cylinder 15 is mounted on the ram 3.

Further, a striker 19 operated by the ram cylinder 15 is provided, and a punch P is provided on a support member 21 integrally provided on the ram guide 13 so as to face the striker 19.

With the above structure, although not shown, the ram,
By operating the punch driving member, the ram cylinder 15 and the punch P can be smoothly moved in the Y-axis direction by the LM guide which is the sliding member 11.

On the other hand, the die D provided so as to face the punch P is mounted on the die base 23, the die base 23 is supported by the die guide 25, and the die guide 25 is an LM guide which is a sliding member 27. It is provided on the lower frame 5 so as to be movable in the Y-axis direction.

With the above structure, although not shown, a die driving member can be operated to smoothly move the die D in the Y-axis direction by the LM guide which is the sliding member 27.

An X-axis clamp 29 which holds the work W and is movable in the X-axis direction (the direction orthogonal to the drawing in FIG. 2).
Are provided on a support plate 31 integrally provided on the lower frame 5 via an LM guide which is an X-axis sliding member 33. The member for moving the X-axis clamp 29 in the X-axis direction is such that the X-axis clamp 29 is screwed into the X-axis ball screw 35 extending in the X-axis direction, and the X-axis ball screw 35 has an X-axis ball screw 35 at one end thereof.
A shaft drive motor (not shown) is provided.

With the above structure, when the X-axis drive motor is driven and the X-axis ball screw 35 is rotated, the X-axis clamp 29 screwed onto the X-axis ball screw 35 is guided by the X-axis sliding member 33 and is moved in the X-axis direction. Moved to. That is,
The work W clamped by the X-axis clamp 29 is moved in the X-axis direction and the punch P and the die D are moved in the Y-axis direction to position the punch P and the die D at desired positions of the work W. Then punching is performed.

Next, the supporting structure of the punch P and the die D, which is the main part of this embodiment, will be described in more detail.

Referring to FIG. 1, since the pan P, the ram cylinder 15 and the striker 19 shown in the drawing have known structures, detailed illustration and description thereof will be omitted.

As a supporting structure on the punch P side, a ram guide 13 is vertically provided as a sliding member 11 on the upper frame 9 via an LM guide, and the ram guide 13 is provided with a supporting member 2.
1 is integrally provided, and a punch holder 37 supporting the punch P is attached to the lower portion of the support member 21. Further, the ram cylinder 1 is provided at the center of the ram guide 13.
The ram base 17 supporting 5 is inserted, and the ram guide 1
The key 41 provided on the ram base 17 is fitted into the key groove 39 formed in the ram guide portion 13a of No. 3, and the ram base 17 serves as a rotation stopper and is vertically movable along the key groove 39.

Further, flange portions 17a are formed on both sides of the ram base 17, and the flange portions 17a are mounted with a slight gap between the ram guide 13 and the lower surface of the upper frame 9, and the flange portions 17a of the ram base 17 are attached. A striker 19 is provided in the lower part.

Furthermore, the flange portion 1 of the ram base 17
The ram guide 13 is provided with an adjusting screw 43 for abutting against the 7a and adjusting the clearance. And the ram guide 13
A nut member 45 erected on one side of the above is screwed to a ball screw, for example, as a screw member 47 provided extending in the Y-axis direction (direction orthogonal to the drawing in FIG. 1). A drive motor (not shown) is connected to one side of the screw member 47.

With the above structure, when the drive motor is driven, the screw member 47 rotates, and the ram cylinder 15 and the ram guide 13 having the punch P are provided via the nut member 45.
Will be smoothly moved in the Y-axis direction by being guided by the sliding member 11 provided on the upper frame 9.

As a supporting structure on the die D side, a die guide 25 is provided as a sliding member 27 on the lower frame 5 via an LM guide, and a die base portion is provided at a die guide portion 25a provided at the center of the die guide 25. Is installed. Further, on both sides of the die base 23, there are flange portions 23a.
The flange portion 23a is mounted with a slight gap between the die guide 25 and the upper surface of the lower frame 5.

Furthermore, the flange portion 2 of the die base 23
3a is contacted with the stopper bolt 49 to adjust the clearance.
Is provided on the die guide 25 to press the flange portion 23a, and a bolt 51 screwed into the flange portion 23a is provided to penetrate the die guide 25. The head 51a of the bolt 51 and the die guide 25 are An ammunition machine 53 such as a coil spring is mounted between the upper surface and the upper surface.

With the above structure, the gap between the flange portion 23a of the die base 23 and the die guide 25 is determined by the insertion / removal of the stopper bolt 49, and the elastic force of the bullet 53 causes the die base 23 to be constantly urged upward through the bolt 51. Therefore, a gap is generated between the lower surface of the die base 23 and the upper surface of the lower frame 5.

The drive system for moving the die guide 25 in the Y-axis direction is the same member as the drive system for driving the ram guide 13 described above, and a nut member 45 vertically provided on one side of the die guide 25 is provided. As the screw member 47 extending in the Y-axis direction, for example, a ball screw is screwed. A drive motor (not shown) is connected to one side of the screw member 45.

With the above construction, when the drive motor is driven, the screw member 47 rotates, and the die guide 23 together with the die base 23 having the die D via the nut member 45,
The sliding member 27 provided on the lower frame 5 guides the smooth movement in the Y-axis direction.

With the above-described structure, the operation is that the ram cylinder 15 is used except during punching.
In the ram base 17 provided with, the flange portion 17a mounted between the upper surface of the ram guide 13 and the lower surface of the upper frame 9 is adjusted by the adjusting screw 43 with a slight clearance. That is, the thickness L3 of the flange portion 17a shown in the drawing of FIG. 1 is processed to be thinner than the height h3 of the LM guide which is the sliding member 11, and the pressure receiving portion A which is the upper surface of the flange portion 17a of the ram base 17 is processed. There is a gap between the upper surface and the lower surface of the upper frame 9, and the amount of the gap can be easily adjusted to the optimum amount by pushing and pulling the adjusting screw 43.

On the die D side, the die base 23 is pulled toward the die guide 25 side by the elastic force of the ammunition machine 53, and a little between the lower surface of the die base 23 and the upper surface of the lower frame 5 by the stopper bolt 49. It is adjusted to maintain the gap. That is, the thickness L4 of the flange portion 23a shown in the drawing of FIG. 1 is processed to be thinner than the dimension h4 between the upper surface of the lower frame 5 and the flange contact surface of the die guide 25, and the flange of the die base 23 is formed. There is a gap between the pressure receiving portion B, which is the lower surface of the portion 23a, and the upper surface of the lower frame 5, and the amount of the gap can be easily adjusted to the optimum amount by inserting and removing the stopper bolt 49.

As described above, except during punching, the pressure receiving portion A which is the upper surface of the flange portion 17a of the ram base 17, the pressure receiving portion B which is the lower surface of the flange portion 23a of the die base 23, the upper frame 9 and the lower frame. A gap is maintained between the No. 5 and the No. 5. Therefore, when the punch P and the die D are positioned, the lime guide 13 and the die guide 25 are moved, but the sliding members 11 and 27 for moving the lime guide 13 and the die guide 25 are the supporting member on the punch P side and the supporting member on the die side. Since only its own weight is loaded, the minimum allowable load is sufficient, and the size is significantly smaller than the conventional one.

During punching, a load is transmitted from the punch P to the ram base 17 via the striker 19 on the side of the punch P, and the ram base 17 is lifted by the clearance, and the pressure receiving portion A abuts the lower surface of the upper frame 9 and the load is applied. Is directly received by the upper frame 9. On the die D side, a load is transmitted from the die D to the die base 23, the die base 23 is lowered by a gap, the pressure receiving portion B abuts on the upper surface of the lower frame 5, and the load is directly received by the lower frame 5.

Since the pressing load is received by the upper and lower rigid bodies of the frames 5 and 9, the sliding members 11 and 27 for moving the punch P and the die D may have the minimum necessary capacity. Therefore, the cost can be reduced. Further, a predetermined gap can be easily obtained in the pressure receiving portions A and B, no high technology and processing accuracy are required, and since there is no troublesome adjustment, the number of assembling steps can be reduced and the high accuracy adjustment can be easily performed. it can.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes.

[0038]

As will be understood from the above description of the embodiments, according to the present invention, since the construction is as described in the claims, there is a slight gap between the ram guide and the upper frame. The ram base was attached with a gap between the two, and the die base was attached with a slight gap between the die guide and the lower frame. For this reason, the gap is always maintained during the punching process, and the gap is zero, and the load is directly received on the upper and lower frames. Therefore, the allowable capacity of the sliding member, which is a guide for positioning the punch and the die, is the same during the punching process. It is sufficient to determine the lateral force (20 to 25% of the punching force) as the design load, instead of the punching force of
The size is significantly smaller than the conventional one, and the cost can be reduced.

Further, since the machining accuracy is not increased by providing the gap, no high technology is required, and no troublesome adjustment man-hours are required, it is possible to easily reduce the assembly man-hours and adjust with high accuracy. You can

[Brief description of drawings]

FIG. 1 shows a main part of the present invention and is taken along line II in FIG.
It is an expanded sectional explanatory view along a line.

FIG. 2 is a front explanatory view of a punching press of one embodiment for carrying out the present invention.

FIG. 3 is a cross-sectional explanatory view of a punching press showing a conventional example.

[Explanation of symbols]

 1 Punching Press 5 Lower Frame 9 Upper Frame 11 Sliding Member 13 Ram Guide 15 Ram Cylinder 17 Ram Base 17a Flange Part 23 Die Base 23a Flange Part 25 Die Guide 27 Sliding Member P Punch D Die

Claims (1)

[Claims] 1. A punching press in which a punch and a die are movable in the left-right direction, and a ram guide provided with the punch is vertically provided from an upper frame through a sliding member. The ram guide and the upper frame are provided. The ram base equipped with a ram cylinder is adjusted and mounted with a slight gap between the ram base and the ram base, and the ram base is mounted on the ram guide so that it can move up and down with respect to the ram guide. A die guide is provided through the flange, and the flange portion of the die base provided with the die is adjusted and mounted between the die guide and the lower frame with a slight gap, and the die base is vertically movable with respect to the die guide. A punching press characterized by being provided on a frame.