JP5898663B2 - Work vice and its cap - Google Patents

Description

  The present invention relates to a work vise (hereinafter simply referred to as “vice”) used to fix a work (workpiece) by mounting it on a table or the like of a machine tool. The present invention relates to a characteristic vise and a base used for the vice.

  A vice is widely used as a device for fixing a workpiece to a table of a machine tool when machining the workpiece with a machine tool. The vise is provided with a pair of jaws (jaws) that move in directions close to and away from each other by a driving device such as a feed screw or a hydraulic cylinder. Usually, a flat base (hard base) made of hard metal or a base (raw base) with a gripping surface that matches the shape of the work is attached to the jaw, and the opposite side of the work is gripped by the base. And fix.

  If the workpiece is processed into parallel planes on both side surfaces (hereinafter referred to as “grip side surfaces”) gripped by the vice, the workpiece can be firmly gripped by the vise with a hard die attached thereto. Even if the grip side surface is not a parallel plane, if the grip side surface has a certain area, the workpiece can be gripped by a vise to which a base is attached. However, a workpiece having a small grip side surface compared to the size of the workpiece such as a thin plate is unstable and difficult to perform heavy processing. The same applies to a workpiece in which the portions gripped by the caps on both sides of the workpiece are plate-like even if the workpiece is not a thin plate.

  Further, as a problem when the work is fixed with the vise, there is a problem that the work may be lifted when the work is held with the vise. As shown in the following patent document, this problem can be prevented by using a base having a structure in which the base moves slightly downward by the gripping reaction force from the workpiece, that is, the vise base side. However, such a base has a more complicated structure than a hard base formed of a simple plate material.

International Publication No. 2003/82516 Pamphlet JP-A-2005-40897

  An object of the present invention is to obtain a thin plate-like workpiece or a vise capable of firmly and stably fixing a workpiece such as a hat shape in which a portion gripped by a vise of the workpiece is a thin plate shape. . Furthermore, it is a problem to obtain a vise that can be firmly and stably fixed even with a workpiece of the above shape in which the black skin (the surface as cast or forged) remains in the portion gripped by the vice. It is said.

  In the vise of the present invention, a base 4 and a receiving plate 5 are attached to a portion of the jaw 2 (2a, 2b, 2c) that grips the work 6. A pair of a base 4 and a receiving plate 5 that grip the opposite side surfaces of a single workpiece 6 is attached to a pair of jaws 2 and 2 that are close to and away from each other, like a conventional vise. The workpiece 6 is gripped by the two close movements.

  The base 4 is provided with a horizontal upper surface 42 and an inclined lower surface 43 immediately below the upper surface when the vise is placed on a horizontal bed, and an edge 41 facing the workpiece is formed at the intersection of the horizontal upper surface and the inclined lower surface. Has been. The receiving plate 5 is attached to the face of the base 4 or the jaw 2 of the vice facing the work side, and the upper end surface forms a horizontal receiving end face 51 extending below the edge 41 of the base toward the work side from the edge. ing.

  The vise of the present invention particularly suitable for gripping a workpiece whose gripping side surface 61 is a black skin is provided with a plurality of recesses 46 at predetermined intervals on the edge 41 of the base, and the gripping side surface of the workpiece is on a line at intervals. It is a vise that is held by a plurality of short edges.

  The base 4 and the receiving plate 5 are in such a positional relationship that when the workpiece 6 to be gripped is placed on the receiving end surface 51 of the receiving plate, the edge 41 of the base contacts the upper half of the gripping side surface 61 of the workpiece, that is, the opposite receiving end surface side. It is fixed to the jaw 2. The vise of the present invention can firmly and stably fix the workpiece even if the gripping side surface 61 has a thickness of about 1 mm. If the gripping side surface 61 has a thickness of 1 mm, the vise edge 41 and The base 4 and the receiving plate 5 are attached to the jaw 2 so that the interval between the receiving end surfaces 51 of the receiving plate is 0.7 to 0.8 mm.

  When the work 6 is fixed with the vice of the present invention, the work is placed on the receiving end face 51 of the receiving plate facing the work 6 and the movable jaw 2b is tightened. Thereby, the workpiece 6 is held and fixed by the opposing edge 41.

  At this time, the horizontal gripping force F acting from the edge 41 in relation to the support force of the workpiece by the receiving end surface 51 generates a moment in the direction of pushing the entire workpiece toward the base 1 at both gripping side surfaces of the workpiece. Let For this reason, the work is gripped by the edge 41 and pressed against the receiving end surface 51, and is fixed in a state in which the lifting is prevented.

  Since the gripping side surface 61 of the workpiece is gripped by the linear edge 41 and the inclined lower surface 43 of the edge generates a force to push down the gripping side surface 61, even if the workpiece is a thin plate-like workpiece having a narrow gripping side surface, the workpiece is the receiving end surface. It can be firmly and stably fixed in a state where it is pressed against 51.

  In the case where a plurality of concave portions 46 are provided on the edge 41 to grip a workpiece with a plurality of short edges, the biting force on the grip side surface 61 of the edge 41 increases, so that even if the grip side surface 61 is a black skin workpiece, It can be held firmly and stably.

  According to the present invention, a vise capable of fixing a thin workpiece firmly and stably with a simple structure can be obtained. According to the vice of this invention, a thin plate-like workpiece having a thickness of 1 to 1.5 mm can also be fixed.

  Furthermore, by providing a plurality of recesses on the edge and making the edge contact with the workpiece intermittently, the edge biting force against the workpiece is increased, and even a black skin workpiece can be firmly fixed. The workpiece that can withstand cutting can be fixed.

  The workpiece can be prevented from being lifted by the moment generated by the gripping force of the edge or the action of the inclined lower surface of the edge.

Side view showing an embodiment of the present invention Plan view Enlarged side view of the part holding the workpiece

  Hereinafter, a vise of the present invention will be described in detail with reference to the accompanying drawings showing embodiments. The illustrated vise includes a fixed jaw 2 a fixed to the base 1, a movable jaw 2 b that is slidably mounted along a guide 3 provided on the base 1 in a direction to approach and separate from the fixed jaw 2 a, An intermediate jaw 2c is provided that is slidable along the guide 3 and is mounted between the fixed jaw 2a and the movable jaw 2b. The base 1 is provided with a drive device such as a feed screw and a hydraulic cylinder for moving the movable jaw 2b toward and away from the fixed jaw 2a, but this is not shown in the figure.

  The vise provided with the intermediate jaw 2c between the fixed jaw 2a and the movable jaw 2b is a movement of the movable jaw 2b between the fixed jaw 2a and the intermediate jaw 2c, between the adjacent intermediate jaws 2c, and between the intermediate jaws 2c. The workpiece can be fixed between the movable jaw 2b and the number of intermediate jaws + 1, and the number of workpieces 6 can be simultaneously grasped and processed by one operation of the movable jaw 2b.

  A pair of a base 4 and a receiving plate 5 is attached to the mutually opposing surfaces of each jaw 2 (simply referring to all of a fixed jaw, a movable jaw and an intermediate jaw). The shapes of the base 4 and the receiving plate 5 viewed from the work side are rectangles having the same width as the jaw 2.

  An edge 41 facing the workpiece is formed on the upper end of the base 4. This edge 41 is formed at the intersection of the horizontal upper surface 42 at the upper end of the base 4 and the inclined lower surface 43 having an inclination angle of 45 degrees immediately below it. On the surface of the base 4 directly below the inclined lower surface 43 facing the workpiece, a recess 44 is provided that is recessed on the jaw side in a side view.

  In the example shown in the figure, the surfaces of the jaws 2 facing each other are such that the upper side surface 21 on which the cap 4 is mounted is recessed from the lower side surface 22 below it to the jaw 2 side, and the receiving plate 5 is provided for each jaw. There is a gap between the face of the base 4 facing the work side and the receiving plate 5. However, the opposing surfaces of the jaw 2 may be a single plane, and the receiving plate 5 may be attached in close contact with the surface 45 below the recess 44 of the base 4.

  The receiving end surface 51 at the upper end of the receiving plate 5 extends toward the workpiece 6 from the edge 41, and the workpiece is supported by placing the lower surface of the gripping side surface of the workpiece 6 on the extending portion. The receiving plate 5 has a height of the receiving end surface 51 such that when the workpiece 6 is placed on the receiving end surface 51, the edge 41 of the base is positioned in the upper half of the holding side surface 61 of the workpiece held by the vise. Set and installed.

  As shown in the plan view of FIG. 2, the edge 41 of the base is provided with a plurality of concave portions 46 at predetermined intervals so as to abut on the gripping side surface 61 of the workpiece intermittently. The structure in which the concave portion 46 is repeatedly provided in the edge 41 that abuts on the workpiece and the edge 41 intermittently abuts on the workpiece holds the workpiece stably when the gripping side surface 61 of the workpiece is black skin. It is effective for.

  When the workpiece 6 is gripped by the vice of the present invention, even if the workpiece has a narrow gripping side surface 61, the edge 41 of the base works to bite into the gripping side of the workpiece, and the workpiece slides between the base and the base. Therefore, the workpiece 6 can be firmly and stably fixed, and heavy cutting with respect to the workpiece 6 becomes possible. In addition, since the gripping force F acting on the workpiece 6 from the edge 41 generates a downward moment at the end of the workpiece supported by the receiving end surface 51 of the receiving plate, combined with the inclined lower surface 43 of the edge 41. The force which presses the workpiece | work 6 to the receiving end surface 51 side generate | occur | produces, and the lifting of the workpiece | work 6 from the receiving end surface 51 can be prevented.

DESCRIPTION OF SYMBOLS 1 Base 2 (2a, 2b, 2c) Jaw 4 Base 5 Receptacle 6 Work piece 41 Edge 42 Horizontal upper surface 43 Inclined lower surface 46 Recess 51 Receiving end surface 61 Grasp side F F Grasping force in horizontal direction

Claims (2)

In a work vise that attaches a pair of jaws that grip both sides of the workpiece to a pair of jaws that are close to and separate from each other and grips the workpiece with the pair of jaws by the proximity movement of the pair of jaws,
The mouthpiece comprises an edge facing the workpiece side intersection section between the inclined lower surface immediately below the horizontal upper surface of the upper end, lower end surface of the work side of the jaw surface or the die of the working side is attached in the mouthpiece comprising a a backing plate which is additionally provided in contact with the base of the device, the upper end of the receiving plate is, forms a horizontal receiving end surface extending to the work side of the edge below the edges, the receiving end surface A work vise characterized in that the distance between the edge and the receiving end surface in the direction orthogonal to the width is narrower than the thickness of the grip side surface of the work to be gripped and wider than half of the thickness .   The work vise according to claim 1, wherein the base includes a plurality of recesses at predetermined intervals on the edge.

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