JPH0576956A - Portable punching tool - Google Patents

Abstract

PURPOSE:To provide a portable punching tool whose handleability is excellent for an already installed plate, as well. CONSTITUTION:The tool is constituted of a first arm member 7 for which the base end of a supporting member 6 for holding a cylinder 5 to a fixed handle 2 is fixed to the tip end of the fixed handle 2 and which is extended in a direction vertical to the axis 22 of the fixed handle 2; a second arm member 8 whose base end is connected to the tip end part of the first arm member 7 rotatably around its own axial line 71 and which is extended in the direction parallel to the axis 22 of the fixed handle 2; and a third arm member 9 which is rotatably connected to the tip end part of the second arm member 8 with its own axis line 91 obliquely intersected with the axial line 81 of the second arm member 8 and which is also rotatably connected to the outer circumference 51 of the cylinder 5 on the axial center 10 intersecting orthogonally with to both its own axis line 91 and the axial line 81 of the second arm member 8. The cylinder 5 may be faced to an optional direction three dimensionally against the axial line 22 of the fixed handle 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching tool for punching a hole of a predetermined shape in a steel plate used for various purposes such as a switchboard, and in particular, a fixed handle having a built-in manual hydraulic pump has a hydraulic pump. The present invention relates to a hand-held punch tool in which a drive handle for driving a punch is attached.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, a drive handle 3a for driving the hydraulic pump 1a is mounted on a fixed handle 2a having a built-in manual hydraulic pump 1a and a grip portion at its base end. In addition, a cylinder 8a having a ram 7a operated by pressure fluid from a hydraulic pump, to which a shaft 6a having a punch 4a and a die 5a at its tip is detachably attached, is provided at the tip of the fixed handle 1a. The shaft 6a attached to the ram 7a is drawn into the cylinder 8a by the hydraulic pump 1a.
A hand-held punch tool for making a hole of a predetermined shape in a plate material 9a sandwiched between a die 5a and a die 5a is conventionally known.

Since such a hand-held punching tool is a manual type, it does not require a power source or the like and can be used at any working place, and it is excellent in that it can be used for drilling existing locations and does not generate chips. It has advantages.

However, the conventional hand-held punch tool grips the fixed handle 2a and the drive handle 3a to drive the hydraulic pump to drive the ram 7a in the cylinder 8a fixed to the tip of the fixed handle 2a. The punch 4a and the die 5a provided at the tip of the die are used to make holes in the plate member 9a arranged so as to expand in the direction perpendicular to the axial direction of the cylinder 8a. Therefore, there is no problem when making a hole in the plate material 9a before assembly or before mounting, but when the hole is made in the existing portion because the cylinder 8a is fixed to the fixed handle 2a, the arrangement position and angle of the plate material 9a May not be suitable for drilling work, and there is a problem that existing equipment and wiring interfere with the drilling work.

[0005]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is that when a hole is drilled in an existing location, the plate material is placed at a fixed position and the angle is fixed, and the driving handle and the cylinder are attached at a mounting position. There is a case that it is not suitable for the above, and further, it is difficult or impossible to perform the drilling work because the existing equipment, wiring and the like interfere.

[0006]

According to the present invention, a drive handle for driving the hydraulic pump is pivotally attached to a fixed handle having a built-in manual hydraulic pump and having a grip portion at the base end. A shaft having a punch and a die is detachably attached to the cylinder, and a cylinder having a ram that is actuated by the pressure liquid from the hydraulic pump is provided at the tip of the fixed handle through a support member. In a hand-held punch tool for punching a plate material sandwiched between the punch and the die by drawing it into a cylinder by a pressure liquid from a pump, the support member has a base end which is a tip end of the fixed handle. A first arm member which is fixed to the portion and extends in a direction perpendicular to the axis of the fixed handle, and a base end of which is rotatable around its own axis at the tip of the first arm member. A second arm member that is connected and extends in a direction parallel to the axis of the fixed handle, and is rotatably connected to the distal end portion of the second arm member such that its axis is oblique to the axis thereof and is rotatable. The third arm member is rotatably connected to the outer peripheral surface of the cylinder on an axis that is orthogonal to both the axis and the axis of the second arm member. Also achieves the purpose of providing a hand-held punch tool that is extremely easy to use.

[0007]

The cylinder rotates about the axis of the connecting portion with the third arm member with respect to the third arm member on a plane including its own axis. The third arm member rotates with respect to the second arm member about an axis intersecting with the axis center of the third arm member,
The cylinder is swiveled around the tilted and intersecting axes. The second arm member pivots about its own axis with respect to the first arm member to pivot the third arm member about its own axis. As a result, the cylinder arbitrarily changes the amount of eccentricity and the inclination angle and the inclination direction with respect to the axis of the fixed handle in the three-dimensional space.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIGS. 1 to 3 show an embodiment of the present invention in which a manual hydraulic pump 1 is incorporated and a grip portion is provided at a base end. A drive handle 3 for driving the hydraulic pump 1 is axially mounted on a fixed handle 2 provided with 21, and a cylinder 5 having a ram 4 operated by the hydraulic fluid from the hydraulic pump 1 is fixed by a support member 6 by the support member 6. It is attached to 2.

The ram 4 has an opening 41 at one end, and an internal thread 42 is formed inside the ram 4 to expose the opening 41 to an opening 43 formed at the front end surface of the cylinder 5 and the ram 4 is arranged in the cylinder 5 to provide the hydraulic pump 1 It is configured to be drawn toward the base end side of the cylinder 5 by the pressure liquid from.

The support member 6 for attaching the cylinder 5 to the fixed handle 2 is composed of a first arm member 7, a second arm member 8 and a third arm member 9.

The base end of the first arm member 7 is fixed to the distal end of the fixed handle 2 and extends in the direction perpendicular to the axis 22 of the fixed handle 2.

The second arm member 8 extends from the front end of the first arm member 7 toward the front of the fixed handle 2 in a direction parallel to the axis 22 of the fixed handle 2, and the base end of the second arm member 8 is centered on the axis 81 of the first arm member 7. It is rotatably connected.

The third arm member 9 is formed to be shorter than the two arm members 7 and 8, and is arranged with its axis 91 inclined with respect to the axis 81 of the second arm member 45 by, for example, 45 degrees. The second arm member 8 is rotatably connected to each other via a shaft member 93 having an axis line 92 orthogonal to 91 and intersecting the axis line 81 of the second arm member 8 at an angle of 45 degrees. The base end portion of the third arm member 9 has the axis 91 and the second arm member 8
Is rotatably attached to the body portion 51 of the cylinder 5 about the rotary shaft 10 that is orthogonal to both the axis lines 81 of

Further, inside the first arm member 7, the second arm member 8 and the third arm member 9, an oil feed passage 1 for connecting the hydraulic pump 1 built in the fixed handle 2 and the cylinder 5 is provided.
1 is continuously formed.

In the drawings, reference numeral 12 is a handle for actuating a return valve for returning the pressure liquid sent to the cylinder 5 to the oil tank 13 provided in the fixed handle 2.

In this embodiment, the male screw 11 formed at the base end of the shaft body 15 having the punch 13 and the die 14 having the shape and size suitable for the desired drilling is screwed into the female screw 42 as in the conventional example. The plate member 17 which is attached to the ram 4 and is fixed between the punch 13 and the die 14 is attached to the shaft 15
The hydraulic pump 1 is driven by rotating the drive handle 3, and the ram 4 is drawn toward the base end side of the cylinder 5 by the pressure liquid generated thereby, and the plate material 17 is formed by the punch 13 and the die 14. A hole of a predetermined shape is made in the.

In this embodiment, a mounting portion between the cylinder 5 and the third arm member 9, a mounting portion between the third arm member 9 and the second arm member 8, and a mounting portion between the second arm member 8 and the first arm member 7. The positional relationship between the fixed handle 2 and the cylinder 5 can be arbitrarily changed by rotating the cylinder 5, the third arm member 9, and the second arm member 8 in the mounting portion. It can be changed arbitrarily, for example, as shown by the chain line in FIG. 1, according to the position and angle of the plate material 17 for processing the cylinder 5, and further avoiding the equipment and wiring arranged around the drilling position. It can be oriented in any direction and makes drilling work extremely easy.

In the present embodiment, the first arm member 7 is arranged on the fixed handle in the same phase as the drive handle 3, but the arrangement direction is not limited, and when the first arm member 7 is used in a limited place or an existing plate member. Should be placed in a position that is easy to use. Furthermore, the mounting portion of the first arm member 7 to the fixed handle 2 may be configured to be rotatable about the axis of the fixed handle 2, and in this case, the degree of freedom of the cylinder 5 with respect to the fixed handle 2 is further increased. .

[0019]

According to the present invention, a support member for supporting a cylinder on a fixed handle has a first arm member whose base end is fixed to a distal end portion of the fixed handle and extends in a direction perpendicular to the axis of the fixed handle. A second arm member whose base end is rotatably connected to the tip end portion of the first arm member about its own axis and extends in a direction parallel to the axis line of the fixed handle; and a tip end portion of the second arm member. It is rotatably connected with its own axis oblique to the axis and is rotatable with respect to the outer peripheral surface of the cylinder on an axis perpendicular to both the axis of itself and the axis of the second arm member. It is possible to arbitrarily change the eccentric amount, the inclination angle, and the inclination direction of the cylinder with respect to the axis of the fixed handle in the three-dimensional space. Therefore, it is possible to match the position and angle of the plate material to process the cylinder, and also to direct it in any direction, avoiding the equipment and wiring arranged around the drilling position, and to set the desired hole in the existing processed plate material. It can be formed very easily.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a front partial view showing a tip portion of the embodiment shown in FIG.

FIG. 3 is a partial side view showing a tip portion of the embodiment shown in FIG.

FIG. 4 is a perspective view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hydraulic pump, 2 ... Fixed handle, 3 ... Drive handle, 4 ... Ram, 5 ... Cylinder, 6 ... Support member, 7 ... First arm member, 8 ... Second arm member, 9 ... Third arm member, 71 ... Axis, 81 ... Axis, 91 ... Axis, 92 ... Axis, 93 ... Shaft member, 8 ... Punch, 9 ... Die, 10 ... Shaft, 12 ... Plate material.

Claims (1)

[Claims] 1. A drive handle for driving the hydraulic pump is axially attached to a fixed handle having a hand-held hydraulic pump built-in and a grip at the base end, and a punch and a die are provided at the tip. A cylinder having a ram, to which a shaft is detachably attached and which is operated by pressure fluid from the hydraulic pump, is provided at the tip of the fixed handle via a support member, and the ram is provided in the cylinder by the pressure fluid from the hydraulic pump. In a hand-held punching tool for punching a plate material sandwiched between the punch and the die by pulling the punch into a predetermined shape, the support member has a base end fixed to a tip end portion of the fixed handle and an axis line of the fixed handle. A first arm member extending in a direction perpendicular to the first handle member, and a base end of the first handle member rotatably connected to a tip end portion of the first arm member about its own axis. A second arm member that extends in a direction parallel to the axis, and is rotatably connected to the distal end portion of the second arm member such that the axis of the second arm member is oblique to the axis and the axis of the second arm member and the second arm. A hand-held punch tool, comprising: a third arm member rotatably connected to an outer peripheral surface of the cylinder on an axis perpendicular to both axes of the member.