JPH07246567A - Working clamp - Google Patents

Abstract

PURPOSE:To hold different working materials simultaneously from free angles, by providing clamps for holding different working materials respectively, to the tips of a pair of expansion arms whose base ends are journalled rotatively on vertical planes relative to the rotary surfaces of the expansion arms. CONSTITUTION:The disk plates 26 and 36 of the base ends of expansion arms 20 and 30 are connected rotatable on a specific plane (X-Z plane) through a blade screw 37. While the expansion arms 20 and 30 are composed to allow the advance and retreat movement, and the rotation around the shaft by their shaft arms, their movements are regulated by stoppers 25. To the tips of the expansion arms 20 and 50, clamps 11 and 15 are installed through y-axis rotary members 40 and 50, and they are composed rotatable on vertical planes relative to the longitudinal directions of the expansion arms 20 and 30. Consequently, the clamps 11 and 15 can be moved to desired specific positions respectively, and two different working materials can be held at desired angles simultaneously.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work clamp for holding a work object, and more particularly to a structure of a clamp for simultaneously supporting two work objects from arbitrary directions.

[0002]

2. Description of the Related Art As shown in FIG. 6, a clamp for holding a workpiece is provided with an adjusting screw 4 which can be moved up and down by a handle 3 in front of a frame 2, and a tip shelf 5 and a fixed shelf 6 of the adjusting screw 4. The object is sandwiched between and.

The work clamp 1 grips a relatively small and lightweight object such as a craft material or a model material, and does not include an electric means such as an electric motor or a robot hand having a hydraulic mechanism. .

[0004]

By the way, when manufacturing small objects and models, it is often the case that it is desired to simultaneously support and fix two manufacturing materials positioned at free angles. The purpose is to weld, bond, or position the two materials for processing.

However, the conventional clamp as shown in FIG. 6 cannot simultaneously support two materials having different angles. For this reason, it is often the case that it is difficult for a person to make a piece of work independently, such as by having another person bring the processed material, which often hinders the free production.

Therefore, an object of the present invention is to enable two work materials to be simultaneously supported from a free angle.

[0007]

In order to achieve the above object and achieve the object, a work clamp according to the present invention is such that a clamp is provided at each tip of two telescopic arms whose base ends are rotatably pivotally mounted. Along with the arrangement, a y-axis rotation part that can rotate the clamp on a plane perpendicular to the rotation surface of the expansion and contraction arm and an intermediate part between the expansion and contraction arms and the y-axis rotation around the expansion and contraction arm axis. And a clamp rotating part capable of rotating either one of the section and the clamp.

[0008]

In this work clamp, the clamps are arranged at the distal ends of two telescopic arms whose base ends are rotatably pivotally mounted. The two clamps are for gripping different manufacturing materials, respectively, and are connected to the distal end of the telescopic arm, and the proximal end of the telescopic arm is rotatable, so that each clamp is specified. It can move back and forth in any direction on the plane (x-z axis plane).

In addition, a y-axis rotating portion that can rotate the clamp on a plane perpendicular to the rotating surface of the expandable arm is provided at an intermediate portion between each expandable arm and each clamp. Therefore, each clamp can move vertically at a specific position in the x-z axis plane. Thereby, one clamp can be used as a fulcrum, and the other clamp can draw a spherical shape according to the arm length and reach the specific point p.

Further, a y-axis rotating portion or a clamp rotating portion capable of rotating the clamp is arranged at an intermediate portion between each telescopic arm and each clamp around the axis of the telescopic arm. Therefore, the clamp can freely rotate at a specific point p and can grasp the manufacturing material from any direction.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an example of a work clamp according to the present invention. The work clamp 10 includes two clamps 11 and 15 and two telescopic arms 20 and 30 whose base ends are rotatably attached to the shafts.
The y-axis rotating portions 40 and 50 are arranged at the tip end portion of 0, and a part of the y-axis rotating portions 40 and 50 is clamped to the clamp frames 12, 16.
It will be fixed to.

In this embodiment, the telescopic arm 20 comprises an arm body 21 and a shaft arm 23 inserted into the arm body 21, as shown in FIG. 24
Is an insertion hole formed at the tip of the arm body 21, and the shaft arm 23 is loosely fitted in the insertion hole 24 so that it can be moved back and forth and rotated about the axis. Incidentally, 25 is a stopper for restricting the movement of the shaft arm 23. The stopper 25 is composed of, for example, a wing screw. The other telescopic arm 3
The configuration of 0 is the same as that of FIG.

On the other hand, a disc plate 26 is provided at the rear end of the arm body 21, and a disc plate 36 formed at the rear end of the other arm body 31 and respective center holes (not shown).
Are superposed on each other and rotatably attached by a wing screw 37. The wing screw 37 is a stopper that restricts the movement of the two disk plates 26 and 36.

The y-axis rotating portion 40 arranged at the tip of the telescopic arm 20 is composed of a disc plate 41 fixed to the tip of the shaft arm 23 and a substantially circular disc plate 42 fixed to the clamp frame 12. Disk plates 41, 42
The central hole (not shown) provided in the
It is rotatably mounted on a shaft. Since the configuration of the other y-axis rotating portion 50 is similar, the corresponding reference numerals are given and the duplicate description is omitted.

According to this structure, each telescopic arm 20,
30 is a disk plate 26, 36 at the base end and a wing screw 3
Through 7, it is possible to freely rotate on a specific plane (xz plane). On the other hand, since the shaft arms 23 and 33 of the telescopic arms 20 and 30 move forward and backward and rotate around the axes, the clamps 11 and 15 located at the tips can be moved to arbitrary specified points. That is, when one clamp 11 is used as a base point, the other clamp 15
Can reach an arbitrary arbitrary point within the sphere according to the stroke of the telescopic arms 20 and 30.

Since each of the clamps 11 and 15 can be freely rotated on a plane perpendicular to the longitudinal direction of the telescopic arms 20 and 30 via the y-axis rotating portions 40 and 50, the clamps 11 and 15 can be freely rotated. 15 can grasp an object from any direction at the specific point.

The work clamp according to the present invention comprises means for rotating the telescopic arm, means for opening the clamp on a plane perpendicular to the plane of rotation, and means for rotating the clamp around the axis of the telescopic arm. However, the mechanical structure of each of these means is not particularly limited. For example, FIG. 3 shows another embodiment of the work clamp according to the present invention. In this work clamp 60, the base end portion of the telescopic arm 61 is a ring 62, and the hole portion of the ring 62 (see FIG. (Not shown)
The wing screw 63 is provided as a stopper and the telescopic arm 61 can be slid and extended. In addition, a ring 65 is provided at the tip of the telescopic arm 61, and a wing screw 66 is provided in this hole (not shown) to enable rotation, and one ring 65B and the clamp 67 are connected by a rotating member 68. The clamp 67 can be rotated around the axis of the arm through connection with the rotary member 68.

The telescopic arm 61 may be configured so that it can slide, as shown in FIG. 4, for example, without rotating about its axis. Reference numeral 71 is a front arm, and 72 is a rear arm. In this case, the rotation around the axis is clamp 67
The rotation member 68 is connected to the rotary member 68. The rotation member 68 is composed of, for example, a spindle 74 and a lock nut 75 as a stopper as shown in FIG. 5, so that the clamp 67 can be fixed at any rotation position. deep.

The rotating portion of the work clamp according to the present invention may have a rotating (or rotating) structure capable of fixing the movement at an appropriate position, and the rotating position can be arbitrarily changed by meshing the channel gears. Any conventionally known appropriate member such as a so-called rotary channel member that can be fixed can be used.

[0020]

As described above, according to the work clamp of the present invention, two work materials can be simultaneously supported from any angle.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a work clamp according to the present invention.

FIG. 2 is a diagram showing an example of a telescopic arm according to the present invention.

FIG. 3 is a perspective view showing another embodiment of the work clamp according to the present invention.

FIG. 4 is a view showing another embodiment of the telescopic arm according to the present invention.

FIG. 5 is a diagram showing an example of a rotating member according to the present invention.

FIG. 6 is a view showing a conventional work clamp.

[Explanation of symbols]

 10,60 Work clamp 11,15,67 Clamp 12,16 Clamp frame 20,30,61 Telescopic arm 40,50 y-axis rotating part 21,31 Arm body 23,33 Axis arm 24 Insert hole 25,35 Stopper 26, 36,41,42 Disc plate 37,45,63,66 Blade screw 62,65 Ring 68 Rotating member

Claims (1)

[Claims] 1. A clamp is provided at the tip of each of two telescopic arms whose base ends are rotatably pivotally mounted, and at the intermediate portion between each telescopic arm and each clamp, with respect to the rotational surface of the telescopic arm. The clamp can be rotated on a vertical plane y
A work clamp, characterized in that an axis rotation part and a clamp rotation part capable of rotating either the y-axis rotation part or the clamp around the axis of the telescopic arm are interposed.