JPH0680738U - Clamp - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention aims to simplify the structure and operation of a clamp for holding a work W, which is a pipe material or a bar material, at the time of cutting. [Structure] Fixed piece 12 and movable piece 1 arranged on a base 11
When the pressing surfaces 12A and 13A with respect to 3 are inclined in an overhang shape and the movable piece 13 is pressed to the fixed piece 12 side by the pressing means 14 to hold the work W by a pressing force, a downward force is exerted on the work W. So that

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a clamp used when cutting, for example, a pipe material or a bar material.

[0002]

[Prior art]

 When two workpieces W, which are steel pipes or rods, are cut in parallel as shown in FIG. 7, a fixing piece (2) fixed on the base (1) and a base ( 1) A work piece W is held by a movable piece (3) slidably arranged above, but the work piece W is held by the work piece W in a lateral direction between the fixed piece (2) and the movable piece (3). Alternatively, when cutting, the work W is pressed from above by the pressing piece (4) in order to prevent the work W from jumping upward due to the pressing force of the saw blade.

[0003]

[Problems to be solved by the device]

 In the above conventional clamp (5), in addition to the fixed piece (2) and the movable piece (3) as described above, the pressing piece (4) is required to prevent the work W from jumping upward, And the clump operation becomes complicated and the cost becomes high.

[0004]

[Means for Solving the Problems]

 As a means for solving the above conventional problems, the present invention is a clamp (10) for gripping a pipe material or a bar material W, which includes a fixing piece (12) fixed on a base (11) and a base (11). ) A movable piece (13) slidably arranged on the upper side, and a pressing means (14) for pressing the movable piece (13) toward the fixed piece (12) side. The pressing surfaces (12A, 13A) of the movable piece (13) provide the clamp (10) inclined in an overhang shape.

[0005]

[Action]

 The work W, which is a pipe material or a rod material, is held by the fixed piece (12) and the movable piece (13) on the base (11) of the clamp (10) in a pressure-fixing manner. The pressing surfaces (12A, 13A) of the movable piece (13) are inclined in an overhang shape, and therefore a downward force is exerted on the work W, so that the work W is prevented from jumping upward. .

[0006]

【Example】

 The present invention will be described with reference to an embodiment shown in FIGS. 1 to 4. A clamp (10) includes a base (11), a fixing piece (12) fixed on the base (11), and the base (11). A movable piece (13) slidably arranged on the table (11), and an air cylinder (14) as a pressing means for pressing the movable piece (13) toward the fixed piece (12), The pressing surfaces (12A, 13A) of the fixed piece (12) and the movable piece (13) are each inclined in an overhang shape, and the fixed piece (12) and the movable piece (13) are not shown in the drawing. As shown in FIG. 3, one pair is arranged at the front part and the rear part of the base (11) by shifting the positions. A circular saw blade (17), which is rotated by a motor (15) and vertically moved by a lifter (16) along the arrow in FIG. 1, is arranged on the front side of the base (11).

In the clamp (10), two works W, which are pipes or rods, are supplied in parallel on the base (11), and the air cylinder (14) is operated to fix the movable piece (13). The work W is pressed against the piece (12) and held by the fixed piece (12) and the movable piece (13). As shown in FIG. 2, the work piece W is applied with a pressing force A indicated by an arrow by the fixed piece (12) and the movable piece (13). The pressing force A is a combination of the lateral force B and the downward force C. Since the force W is applied, the downward force C acts on the work W and the work W does not fly upward. After clamping the work W in this way, the circular saw blade (17) is rotated by the motor (15), and the circular saw blade (17) is lifted upward by the lifter (16) to cut the work W. .. The work W is also prevented from jumping upward by the upward pressing force of the circular saw blade (17) at this time.

In the clamp (10), the fixed piece (12) and the movable piece (13) are arranged so that their positions are displaced from each other, so that as shown in FIG. The fixed piece (12) and the movable piece (13) do not interfere with each other when pressure is held or when only one work W is held as shown by the dotted line.

The above embodiment does not limit the present invention. For example, when the diameter of the work W is sufficiently large as shown in FIG. 5, the fixed piece (22) and the movable piece (23) are displaced from each other. The fixed piece (32) and the movable piece (33) may be comb-shaped so as not to interfere with each other, as shown in FIG. In addition to the air cylinder, a known means such as a hydraulic cylinder or a motor is applied as the pressing means for the movable piece.

[0010]

[Effect of device]

 Therefore, in the present invention, since the clamp only needs to have the fixed piece and the movable piece, the structure and operation of the clamp are greatly simplified.

[Brief description of drawings]

 1 to 4 show an embodiment of the present invention.

1] Front view

FIG. 2 is an enlarged front view of a clamp part.

FIG. 3 is a plan view.

FIG. 4 is an enlarged front view of a clamp part when a small-diameter workpiece is clamped.

FIG. 5 is a plan view of a clamp portion of another embodiment.

FIG. 6 is a plan view of a clamp portion according to still another embodiment.

FIG. 7 is a front view of a clamp portion of a conventional example.

[Explanation of symbols]

 10 Clamp 11 Base 12,22,32 Fixed piece 13,23,33 Movable piece 12A, 13A Pressing surface W Work (tube or rod)

Claims (1)

[Scope of utility model registration request] 1. A clamp for gripping a pipe or a rod, comprising a fixed piece fixed on a base, a movable piece slidably arranged on the base, and the movable piece on the side of the fixed piece. A clamp comprising a pressing means for pressing, and the pressing surfaces of the fixed piece and the movable piece are inclined in an overhang shape.